Flat-type battery

FIELD: heating.

SUBSTANCE: flat battery is proposed; it comprises an energy generating element set in the inside space which is formed by the pressurisation of the external outer edges of the elements and a shell, a collector connected to the plate electrode of the energy generating element, and an electrode output led out of the external outer edges of the shell elements. The electrode output is fitted by a conductive segment covering and connected to the collector, and a stress-relieving segment made from the material with its elasticity being higher than that of the conductive segment material. Thus, formation of folds in the collector or the electrode output can be prevented as well as breaks in welded joints due to the difference in the expansion/compression degree between the collector and the electrode output.

EFFECT: provision for operability of a battery in case of deformation.

10 cl, 20 dwg, 1 tbl

The technical field to which the invention relates

[0001] the Present invention relates to a flat battery.

The level of technology

[0002] Known cylindrical battery in which the arcuate slit formed in a circular conductive output, so that even when the shell of the battery swells as a result of increased internal pressure, the conclusion may be bent at its center due to the cut without affecting many of welded joints (see patent document 1).

[0003] on the other hand, is known for a thin battery (flat battery), in which the conclusions of the positive and negative electrodes (the electrode contacts) have one ends derived from a multilayered shell of the battery, and the other ends of which are welded by ultrasonic welding to the collectors of the positive and negative plate electrodes generating element of a battery.

[0004] In a flat battery, however, there occurs a difference in the degree of expansion/compression between the output electrode and reservoir, when the output electrode and the collectors are subjected to load or high temperature during welding. This can cause folds in the reservoir and discontinuities in welded joints between the headers and the output electrode.

The documents of the prior art

Patent document

[0005] Patent document is NT 1: Tiled patent publication (Japan) room S64-72455.

The invention

[0006] Accordingly, the present invention is the provision of a flat battery, capable, even when the relative deformation due to difference in the degree of expansion/compression between the collector and the output electrode, to accompany and to prevent such deformation.

A means of solving problems

[0007] According to the present invention is provided with a flat battery, comprising: a conductive segment in which the output electrode covers and connects with the reservoir; and a tension-melting segment formed from a material having a higher elasticity than the material of the conductive segment.

[0008] In the present invention relieves the tension segment adapted to reduce deformation caused due to the difference in the degree of expansion/compression between the collector and the output electrode, so that a flat battery can accompany and to prevent such relative deformation. Therefore, it is possible to prevent folds in the gap between the header and collector from the output electrode.

Brief description of drawings

[0009] Fig. 1 is a top view of a flat battery according to one exemplary variant of implementation of the present invention.

Fig. 2 is a view in transverse section taken along the line II-II in Fig. 1.

Fig. 3 - it is licheny top view of a junction between the output of the negative electrode and the collector of the negative electrode in a flat battery in Fig. 1.

Fig. 4 is a view in transverse section taken along the line A-A in Fig. 3.

Fig. 5 is an enlarged top view of a junction between the output of the negative electrode and the collector of the negative electrode according to another exemplary variant of implementation of the present invention.

Fig. 6 is an enlarged top view of a junction between the output of the negative electrode and the collector of the negative electrode according to another exemplary variant of implementation of the present invention.

Fig. 7 is an enlarged top view of a junction between the output of the negative electrode and the collector of the negative electrode according to another exemplary variant of implementation of the present invention.

Fig. 8 is a view in transverse section taken along the line B-B in Fig. 7.

Fig. 9 is a view in cross section of the negative electrode connection parts between the negative electrode and the collector of the negative electrode according to another exemplary variant of implementation of the present invention.

Fig. 10 is a view in cross section of a flat battery according to another exemplary variant of implementation of the present invention.

Fig. 11 is an enlarged top view of a junction between the output of the negative electrode and the collector of the negative electrodes in the flat is atree in Fig. 10.

Fig. 12 is a view in cross section of a flat battery according to another exemplary variant of implementation of the present invention.

Fig. 13 is an enlarged top view of a junction between the output of the negative electrode collector of the negative electrode in a flat battery in Fig. 12.

Fig. 14 is an enlarged top view of a junction between the output of the negative electrode and the collector of the negative electrode according to another exemplary variant of implementation of the present invention.

Fig. 15 is an enlarged top view of a junction between the output of the negative electrode and the collector of the negative electrodes in the flat battery according to example 1.

Fig. 16 is an enlarged top view of a junction between the output of the negative electrode and the collector of the negative electrodes in the flat battery according to example 2.

Fig. 17 is an enlarged top view of a junction between the output of the negative electrode and the collector of the negative electrodes in the flat battery according to comparative example 1.

Fig. 18 is an enlarged top view of a junction between the output of the negative electrode and the collector of the negative electrodes in the flat battery according to example 3.

Fig. 19 is a top view of a flat battery according to comparative example 2./p>

Fig. 20 is a graph showing the temperature characteristics relative to SOC flat battery according to example 3 and comparative example 2.

Detailed description of embodiments

[0010] Further in this document exemplary embodiments of the present invention will be described below with reference to the drawings.

[0011] the Flat battery 1 according to the present variant conceived of as flat in the form of a rechargeable lithium battery thin-layer type. As shown in Fig. 1 and 2, the flat battery 1 includes two positive plate electrode 11, four separator 12, three negative plate electrode 13, the output 14 of the positive electrode, the output 15 of the negative electrode, the upper element 16 of the shell, the lower shell element 17 and the material of the electrolyte, although the material of the electrolyte is not specifically shown.

[0012] Among these constituent parts of the positive plate electrodes 11, a separator 12, a negative plate electrodes 13 and the material of the electrolyte comprise a generating element 18. Additionally, positive and negative plate electrodes 11 and 13 are used as the plate electrode; and the upper and lower elements 16 and 17 of the shell serve as a pair of shell elements.

[0013] Each of the positive plate of electrode the 11 generating element 18 has a collector 11a of the positive electrode, reaching out to the output 14 of the positive electrode, and the layers 11b and 11c of the positive electrode, formed on parts of the opposite main surfaces of the collector 11a of the positive electrode. Here the layers 11b and 11c of the positive electrode, the positive plate electrode 11 is not formed entirely over the main surface collectors 11a of the positive electrode, and formed only on portions of the main surfaces of the collectors 11a of the positive electrode in which the positive plate electrodes 11 substantially covers the separators 12, when the positive plate electrodes 11, the separator 12 and the negative plate electrodes 12 layered and assembled in a generating element 18, as shown in Fig. 2. Although the collector 11a of the positive electrode and the positive plate electrode 11 is formed from a single sheet of conductive material in the present embodiment, the collector 11a of the positive electrode and the positive plate electrode 11 can be formed as separate components and are connected to each other.

[0014] the Collectors 11a of the positive electrode to the positive plate electrode 11 is formed, for example, electrochemically stable metal foil such as aluminum foil, the foil of aluminium is avago alloy, copper foil or Nickel foil. The layers 11b and 11c of the positive electrode to the positive plate electrode 11 is formed, for example, by mixing the active material of positive electrode, such as an oxide composite lithium, such as nicelt lithium (LiNiO₂), manganate lithium (LiMnO₂or cobaltate lithium (LiCoO₂or chalcogenide (a mixture of, for example, S, Se or Te, and the like), conductive agent, such as carbon black, a binder such as an aqueous dispersion medium from prepolymerisation and solvent, applying the resulting mixture on the part of the main surfaces of the collectors 11a of the positive electrode and the exposure of the deposited mixture, drying and rolling.

[0015] Each of the negative plate electrodes 13 a generating element 18 has a collector 13a of the negative electrode, extending to the output 15 of the negative electrode, and the layers 13b and 13c of the negative electrode is formed on parts of the opposite main surfaces of the collector 13a of the negative electrode. Here the layers 13b and 13c of the negative electrode is a negative plate electrode 13 is not formed entirely over the main surface of the collectors 13a of the negative electrode, and formed only on portions of the main surface is the capacity of the collectors 13a of the negative electrode, where negative plate electrodes 13 substantially cover the separators 12, when the positive plate electrodes 11, the separator 12 and the negative plate electrodes 13 layered and assembled in a generating element 18, as shown in Fig. 2. Although the collector 13a of the negative electrode and the negative plate electrode 13 is formed from a single sheet of conductive material in the present embodiment, the collector 13a of the negative electrode and the negative plate electrode 13 can be formed as separate components and are connected to each other.

[0016] the Collectors 13a of the negative electrode is a negative plate electrode 13 is formed, for example, electrochemically stable metal foil, such as Nickel foil, copper foil, stainless steel foil or iron foil. Layers 13b and 13c of the negative electrode to the negative plate electrode 13 is formed, for example, by mixing the active material of the negative electrode capable of absorbing and decarbonate lithium ions in the active material of positive electrode, such as amorphous carbon material, Nagravision carbon material, gravitationally carbon material or graphite, with the aqueous dispersion with the food of ground styrene-butadiene rubber as a precursor to organic sintered base, drying and pulverizing the resulting mixture, mixing the thus obtained base material, in which carbonized styrene-butadiene rubber is supported on the surfaces of carbon particles with a binder such as acrylic resin emulsion, applying the composition of the resulting mixture at part of the main surfaces of the collector 13a of the negative electrode and the exposure of the deposited mixture, drying and rolling.

[0017] When an amorphous or Nagravision carbon material is used as the active material of the negative electrode, the output voltage of the battery decreases with depth of discharge due to the lack of flat profile potential during charging/discharging. The use of such amorphous or negrification carbon material as an active material of the negative electrode, thus, useful for applications in energy sources and electric vehicles due to Unsharp falls power output.

[0018] the Separators 12 a generating element 18 operate to prevent a short circuit between the positive and negative plate electrodes 11 and 13, and may have the function of holding the material of the electrolyte. Each of the separators 12 is elisetta in the form, for example, a porous film of polyolefin such as polyethylene (PE) or polypropylene (PP), in order to close the pores in the porous film by heat with the passage of overcurrent and thus to show the function of interrupting the current.

[0019] In the present embodiment, the separator 12 is not specifically limited to single-layer polyolefin film. The separator 12 may alternatively be a three-layer structure in which a polypropylene film sandwiched between polyethylene film, or a layered structure in which a porous polyolefin film layered on the organic non-woven fabric, etc. forming the separator 12 with such a multi-layered structure provides various functions, such as function of limiting an overcurrent, the function of retaining electrolyte and function to maintain the shape of the separator (improvement of rigidity).

[0020] In a generating element 18 positive plate electrodes 11 and the negative plate electrodes 13 are alternately layered along with each of the separators 12, is inserted between adjacent positive and negative plate electrodes 11 and 13. Two positive plate electrode 11 are connected through the respective collectors 11a of the positive electrode with the output 14 of the positive electrode metal foil, while the three denier who's plate electrode 13 is connected through the respective collectors 13a of the negative electrodes with the output 15 of the negative electrode metallic foil.

[0021] the Number of positive plate electrode 11, the separator 12 and the negative plate electrodes 13 a generating element 18 is not limited in particular, above. For example, an alternative may provide a generating element 18 with one positive plate electrode 11, the two separators 12 and three negative plate electrodes 13. The number of positive plate electrode 11, the separator 12 and the negative plate electrodes 13 can be selected as needed.

[0022] there are No particular limitations on the conclusions 14 and 15 of the positive and negative electrodes while each of pins 14 and 15 of the positive and negative electrodes formed of electrochemically stable metal material. The output 14 of the positive electrode is formed, for example, aluminum foil, foil, aluminum alloy, copper foil or Nickel foil with a thickness of about 0.2 mm, as in the case of collectors 11a of the positive electrode. The output 15 of the negative electrode is formed, for example, Nickel foil, copper foil, stainless steel foil or iron foil with a thickness of about 0.2 mm, as in the case of collectors 13a of the negative electrode.

[0023] As already mentioned above, the plate electrode 11, 13 connected to the terminal 14, 15 ele is trod by pulling collector 11a, 13a of the metal foil plate electrode 11, 13 to the output 14, 15 of the electrode, i.e. the formation of the electrode layers (layers 11b and 11c of the positive electrode or layers 13b and 13c of the negative electrode) on some part of the sheet 11a, 13a of the metal foil and use the remaining end portion of the sheet 11a, 13a of the metal foil as an element for connection to the output 14, 15 of the electrode. Alternatively, the collector 11a, 13a between the layers of the positive or negative electrode and the connecting element can be formed from single sheets of metal foil and connected to each other. Subsequent explanations, in particular, refer to the case where the manifold between the layers of the positive or negative electrode and the connecting element is formed from a single sheet of metallic foil.

[0024] Generating element 18 and is sealed at the top and bottom elements 16 and 17 of the shell. Although not specifically illustrated in the drawings, each of the top and bottom elements 16 and 17 of the shell has a three-layer structure comprising, in order from the inner side to the outer side of the flat battery 1, an inner layer formed from a film-based resin having good resistance to electrolyte and thermal properties of adhesion, such as polyethylene, modified poly is tilen, polypropylene, modified polypropylene or ionomer resin, an intermediate layer formed from a metal foil such as aluminum foil, and an outer layer formed from a film-based resin having good electrical insulating properties, such as polyamide resin or polyester resin.

[0025] in Other words, each of the top and bottom elements 16 and 17 of the shell formed of flexible material, such as polymer-metal thin-film multilayer material having a sheet of metallic foil such as aluminum foil, a film of polyethylene, modified polyethylene, polypropylene, modified polypropylene or ionomer resin, layered on the surface of the metal foil inner side of the flat battery 1), and a film of polyamide resin or polyester resin, layered on the other surface of the metal foil (outer side of the flat battery 1).

[0026] Item 16, 17 of the shell itself can be enhanced in strength by providing not only the polymer layer, but also the metal layer in the element 16, 17 of the shell, as mentioned above. Additionally, the element 16, 17 of the shell can provide a good thermal adhesion with a metal output 14, 15 of the electrode by forming the inner layer of the element 16, 17 of the shell, on the example of polyethylene, modified polyethylene, polypropylene, modified polypropylene or ionomer resin.

[0027] As shown in Fig. 1 and 2, the output 14 of the positive electrode is removed from one end elements 16 and 17 of the shell; the output 15 of the negative electrode is withdrawn from the other end of the elements 16 and 17 of the shell. Because there are some gaps made in parts of thermal melting between elements 16 and 17 of the shell according to the thickness of findings 14 and 15 of the positive and negative electrodes, a sealing film made of polyethylene, polypropylene, etc. can be placed in parts of the contact between pins 14 and 15 of the electrodes and elements 16 and 17 of the shell in order to maintain the airtightness of the internal space of the flat battery 1. The sealing film is preferably formed from the same polymeric material as the material of the elements 16 and 17 of the shell, from the point of view of thermal properties of adhesion with respect to each of pins 14 and 15 of the positive and negative electrodes.

[0028] Generating element 18 and part of the findings 14 and 15 of the positive and negative electrodes are enclosed in items 16 and 17 of the shell. The internal space defined by the elements 16 and 17 of the shell, vacuumed, at the same time being filled with liquid electrolyte solution of litii the th salt, such as lithium perchlorate, lithium fluoroborate or hexaphosphate lithium, as a solute in an organic liquid solvent. After the outer edges of the elements 16 and 17 of the shell is thermally welded to each other through thermal pressing.

[0029] Examples of the organic liquid solvent is ether solvents such as propylene carbonate (PC), ethylene carbonate resulting (EC), dimethylcarbonate (DMC) and methylethylketone. In the present embodiment, the organic liquid solvent is not limited to the above. An alternative may be used organic liquid solvent prepared by mixing ethereal solvent, such as γ-butyrolactone (γ-BL) or diethoxyethane (DEE), or other solvent of the ether solvent.

[0030] the Basic structure of a flat battery 1 according to the present variant has been described above. The connection part between the output 14, 15 and electrode collectors 11a, 13a will be further explained below in detail.

[0031][The first version of the implementation]

Fig. 3 is an enlarged top view of a junction between the output 15 of the negative electrode collectors 13a of the negative electrodes. Here the elements 16 and 17 of the shell and a generating element 18 is omitted in Fig. 3. The connection part between the output 14 will assume the high and electrode collectors 11a of the positive electrode similar in structure to the connection parts between the output 15 of the negative electrode collectors 13a of the negative electrodes. Fig. 4 is a view in transverse section taken along the line A-A in Fig. 3.

[0032] the Output 15 of the negative electrode and three collector 13a of the negative electrodes are connected together by ultrasonic welding, for example, six welds 20. The output 15 of the negative electrode has a conductive segment 151, divided into many elements, and an insulating segment 152 covering the conductive segment 151. More specifically, the conductive segment 151 has six flat conductors in the form of a cable formed of a conductive material (conductor material)such as copper, and are individually welded to the respective weld joints 20 to collectors 13a of the negative electrodes. Six conductors conductive segment 151 is formed to be extended from the collectors 13a of the negative electrodes to the outside of the outer edges of the elements 16 and 17 of the shell.

[0033] the Conductive segment 151 is covered with an insulating segment 152 so that the insulating segment 152 holds the sides of the flat conductor conductive segment 151 and thereby saves these conductors are conductive segment 151 isolated from each other. The insulating segment 152 is placed between multiple conductors conductive segment 151 in the direction of the plane (i.e. the above-mentioned n the Board of the expansion/compression) collectors 13a of the negative electrodes. Additionally, the insulating segment 152 is formed from a material such as a polymer having a higher elasticity than the material of the conductive segment 151. The term "elasticity" here refers to the ability of a material to expand and contract under thermal stress or mechanical stress, etc.

[0034] Fig. 3 corresponds to the top view of the output 15 of the negative electrode collectors 13a negative electrodes, when viewed from the lower side in Fig. 2 (the lower element 17 of the shell). Although the output 15 of the negative electrode is illustrated as a short length in the drawing, it is possible to stretch the output 15 of the negative electrode to an arbitrary length. In one example, the output 15 of the negative electrode, which has a conductive segment 151 with many conductors and the insulating segment 152, as one unit can be provided in the form of a flexible cable can be bent and curled. In another example, the insulating segment 152 may be formed from any polymeric material of relatively high hardness, so that the output 15 of the negative electrode can keep its shape. The ends of the conductors of the conductive segment 151 is exposed from the insulating segment 152 in both end parts of the output 15 of the negative electrode. One of the bare ends of each Pro is ednica conductive segment 151 is connected by welded connection 20 with header 13a of the negative electrode. The other bare end of each conductor conductive segment 151 is connected with a wire (not shown) outside the flat battery 1.

[0035] In the above-mentioned structure of the flat battery 1 output electrode, such as the output 14 of the positive electrode or the output 15 of the negative electrode, and reservoirs, such as reservoirs 11a of the positive electrodes or collectors 13a negative electrodes mechanically compressed or exposed to heat generated by ultrasonic vibration during welding. This may lead to the difference in the degree of expansion/compression between the output 14, 15 and electrode collectors 11a, 13a, even in the case when the output 14, 15 and electrode collectors 11a, 13a are formed from the same material type.

[0036] Thus, there is a likelihood of folds in the collectors 11a, 13a and discontinuities in welded joints 20, when collectors 11a, 13a expands more than the output 14, 15 of the electrode during welding. Similarly, there is a likelihood of folds in the output 14, 15 and electrode gaps in welded joints 20, when the output 14, 15 of the electrode expands more than the collectors 11a, 13a during welding. Here, in Fig. 3, it is determined that the distance Ic is the distance between the last two conductors conductive segment 151, covered by an insulating segment 152; and the distance It connection is the distance between d uma at welded joints 20. If, for example, when the distance Ic is increased by expanding the collectors 13a of the negative electrode under the influence of heat during welding, there are folds in the output electrode 15 or the collectors 13a of the negative electrodes and the gaps in welded joints 20, if the distance It connection does not change in response to such an extension.

[0037] In the flat battery 1 of this variant implementation, however, the output 14, 15 of the electrode has an insulating segment 152 formed from a material having a higher elasticity than the material of the conductive segment, as mentioned above. For example, when collectors 11a, 13a expands when exposed to heat during welding, the insulating segment 152 extends to accompany and allow the extension of the collectors 11a, 13a, and thereby to prevent folds in the collectors 11a, 13a, at the same time maintaining the bonding strength of the welded joints 20. When collectors 11a, 13a are compressed when the temperature drops after welding, the insulating segment 152 is compressed so as to accompany and to allow compression collectors 11a, 13a, and thereby to prevent folds in the collectors 11a, 13a, at the same time maintaining the bonding strength of the welded joints 20. Thus, the voltage when welding is not focused on welded joints 20 and can be attenuated by isolating the first segment 152 so, to prevent discontinuities in welded joints 20.

[0038] In the output 14, 15 of the electrode conductive segment 151 is equipped with a number of conductors in the form of a cable; and an insulating segment 152 is placed between the conductors of the conductive segment 151 in the present embodiment. When the distance between the welded connection 20 is changed by expansion and contraction collectors 11a, 13a during welding, the distance between the conductors of the conductive segment 151 is changed in response to expansion and contraction collectors 11a, 13a, so that the voltage as a result of such expansion and contraction can be reduced by insulating segment 152.

[0039] Although the insulating segment 152 is provided at the output 14, 15 of the electrode and is adapted to reduce the voltage when welding in the present embodiment, an alternative it is possible to take any other part, such as a conduit having a higher elasticity than the conductive segment 151, as the stress of the segment instead of the insulating segment 152. In the present embodiment, the conductors of the conductive segment 151 is provided in the form of a flat cable, but can be an alternative provided in the form of a cable with a circular cross section or may not necessarily be provided in the form of a cable.

[0040] In the present embodiment, the insulating segment 152 corresponds to a stress relieving segment of the present invention.

[0041] [Second variant implementation]

Fig. 5 is an enlarged top view of a junction between the output 15 of the negative electrode collectors 13a of the negative electrodes according to another exemplary variant of implementation of the present invention. Here the elements 16 and 17 of the shell and a generating element 18 is omitted in Fig. 5. The General structure of the flat battery 1 of the present version of the implementation is the same as the structure of a variant of implementation mentioned above with reference to Fig. 1 and 2. The connection part between the output 14 of the positive electrode collectors 11a of the positive electrode similar in structure to the connection parts between the output 15 of the negative electrode collectors 13a of the negative electrodes as shown in Fig. 1 and 2.

[0042] the Output 15 of the negative electrode of the present version of the implementation shown in Fig. 5 differs from that shown in Fig. 3 in that the slits 153 formed in the output 15 of the negative electrode. As for the other configurations, the above explanation of the first variant of implementation can be applied if necessary.

[0043] In the output 15 of the negative electrode sections 153 formed in positions between multiple conductors conductive segment 151 through the creation of voids in the insulating segment 152 from the end is poverhnosti insulating segment 152, addressed to the collector electrodes 13a, towards the outer the outer edges of the elements 16 and 17 of the shell. Sections 153 pass in the direction of the Central axes of the conductors of the conductive segment 151 so that the ends of the slits 153 are located at or near the center of the insulating segment 152 in the axial direction. The width of the slits 153 is preferably made greater than or equal to half the distance between the conductors of the conductive segment 151 and less than the length of the conductors of the conductive segment 151 in the transverse direction (i.e. the direction perpendicular to the axial direction). In this configuration, the expansion and contraction of the conductive segment 151 may be attenuated by sections 151 during welding.

[0044] As mentioned above, sections 153 formed in the insulating segment 152 so that each of the slits 153 passes from collectors 11a, 13a towards the outer the outer edges of the elements 16 and 17 of the shell in the present embodiment. When collectors 11a, 13a or output 14, 15 of the electrode expands during connection of welded joints 20, sections 153 expand to thereby prevent folds in the collectors 11a, 13a, at the same time maintaining the bonding strength of the welded joints 20. When collectors 11a, 13a or output 14, 15 of the electrode is compressed, sections 153 narrowed so, ctabitem thus preventing creases in the collectors 11a, 13a, at the same time maintaining the bonding strength of the welded joints 20.

[0045] Since the slits 153 formed in the insulating segment 152, an insulating segment 152 may expand or shrink with little effort relative to the voltage at welding on the collectors 11a, 13a or the output 14, 15 of the electrode. This allows for easy expansion or compression of the insulating segment 152 in order to effectively reduce the load on the welded joints 20.

[0046] In the present embodiment, one section 153 is formed between adjacent conductors of the conductive segment 151, as shown in Fig. 5. Many sections 153 may alternatively be formed by creating a variety of cut-outs in the form of dashed lines between adjacent conductors conductive segment, as shown in Fig. 6. Fig. 6 is an enlarged top view of a junction between the output 15 of the negative electrode collectors 13a of the negative electrodes according to another exemplary variant of implementation of the present invention, which corresponds to Fig. 5. The length of the dashed lines, formed by sections 153, preferably made greater than or equal to half the length of the conductors of the conductive segment 151 in the axial direction and less than the length of the insulating segment 152 in the axial direction.

[0047] As is provided in Fig. 7 and 8, the notches 154 may alternatively be formed instead of sections 153. Fig. 7 is an enlarged top view of a junction between the output 15 of the negative electrode collectors 13a of the negative electrodes according to another exemplary variant of implementation of the present invention, which corresponds to Fig. 5. Fig. 8 is a view in transverse section taken along the line B-B in Fig. 7. The recess 154 formed in the main surface of the insulating segment 152 in position between the conductors of the conductive segment 151 thus, to be extended in the axial direction of the conductors of the conductive segment 151. The thickness of the insulating part of the segment 152 in which are formed recesses 154, less than the thickness of the part of the insulating segment 152, in which the notches 154 are not formed. Additionally, the length of the slots 154 in the axial direction of the conductors of the conductive segment 151 is preferably made greater than or equal to half the length of the conductors of the conductive segment 151 in their axial direction and less than the length of the insulating segment 152 in the axial direction. This allows for easy expansion and contraction of the parts of the insulating segment 152, in which the recess 154 formed when collectors 11a, 13a or output 14, 15 of the electrode are expanded or compressed during connection welded connection 20, so that effectively reduces the ü load on the welded joints 20 and to prevent folds in the collectors 11a, 13a, at the same time maintaining the bonding strength of the welded joints 20.

[0048] Although the recess 154 formed in one main surface of the insulating segment 152, as shown in Fig. 7 and 8 in the present embodiment, the recess 154 may alternatively be formed in both major surfaces of the insulating segment 152, as shown in Fig. 9. Fig. 9 is a view in cross section of a part of the output 15 of the negative electrode, which corresponds to Fig. 8.

[0049] In the present embodiment, the slit 153 corresponds to the neckline of the present invention.

[0050] [Third option exercise]

Fig. 10 is a view in cross section of a flat battery according to another exemplary variant of implementation of the present invention. Here the elements 16 and 17 of the shell is omitted in Fig. 10. The General structure of the flat battery 1 of the present version of the implementation is the same as the structure of a variant of implementation mentioned above with reference to Fig. 1 and 2.

[0051] the Flat battery 1 of this variant implementation differs from a battery of the above-mentioned first variant implementation in the structure of a junction between the output 14, 15 and electrode collectors 11a, 13a. As for the other configurations, the above explanation of the first and second embodiments can be applied if necessary.

[002] As shown in Fig. 10, the flat battery 1 includes four negative plate electrode 13 and three positive plate electrode 11, alternately layered together. Among the four collectors 13a of the negative electrodes of the two upper manifold 131a and 131b of the negative electrodes are connected through welding with part 15a output of the negative electrode; and the two lower collector 131c and 131d of the negative electrodes are connected through welding with part 15b of the output of the negative electrode. Among the three collectors 11a of the positive electrode is one of the top collector positive electrode 111a is connected by welding with the part 14a of the output of the positive electrode; and the two lower collector 111b and 111c of the positive electrodes are connected through welding with the part 14b of the output of the positive electrode.

[0053] In the first embodiment, the output 14, 15 and electrode collectors 11a, 13a are connected together at the position of the connection related to the position of the sealing elements 16 and 17 of the shell. In the present embodiment, on the contrary, the output 14, 15 and electrode collectors 11a, 13a are connected together at a position closer connection to a generating element 18, than the position of connection of the first variant implementation.

[0054] the Output 14, 15 of the electrode is introduced towards the collectors 11a, 13a of the position of the sealing elements 16 and 17 of the shell and the eating is divided into two upper and lower layers in some middle point in the interior of the flat battery 1. Namely, one end of the output 15 of the negative electrode is divided into parts 15a and 15b of the output of the negative electrode; and one end of the output 14 of the positive electrode is divided into parts 14a and 14b of the output of the positive electrode.

[0055] Further, the connection part between the output 15 of the negative electrode collectors 13a will be explained below with reference to Fig. 11. Fig. 11 is an enlarged top view of part of the connection between the parts 15a and 15b of the output of the negative electrode and reservoir 131a, 131b, 131c and 131d negative electrodes. Here the elements 16 and 17 of the shell and a generating element 18 is omitted in Fig. 11. Since the connection part between the output 14 of the positive electrode collectors 11a of the positive electrode similar in structure to part of the connection between the output 15 of the negative electrode collectors 13a negative electrodes, an explanation of the connection parts between the output 14 of the positive electrode collectors 11a of the positive electrode will be omitted from this place.

[0056] Part 15a and 15b output of the negative electrode include multiple conductive segments 151, each of which is covered by an insulating segment 152 so that the conductors of the conductive segments 151 parts 15a, 15b of the output of the negative electrode remain isolated from each other in the internal space of the flat the battery 1. The conductors of the conductive segment 151 part 15a output of the negative electrode are connected by welded joints 20 with collectors 131a and 131b of the negative electrode, while the conductors of the conductive segment 151 part 15b of the output of the negative electrode are connected by welded joints 20 with collectors 131c and 131d negative electrodes. Thus, the insulating segment 152 is partially divided at the position between the conductive segments 151 parts 15a and 15b of the output of the negative electrode so that the section passes from the manifold 13a of the negative electrode to the external outer edges of the elements 16 and 17 of the shell and serves as a slit 155.

[0057] In contrast to this variant implementation, in the case of connecting multiple collectors in the form of plates with one output electrode in the form of plates, distance between the two extreme welded joints 20 becomes relatively large due to the need to provide a welded joint 20 according to the width of the collectors and the width of the output electrode. This leads to a large load on the welded joints 20 due to the increase in the value of the expansion and contraction of the distance between the extreme welded joints 20, when the collector or output electrode expand and shrink during welding.

[0058] on the other hand, the collectors 13a and 13b negative the x electrodes and the portion 15a of the output of the negative electrode are connected together; and the collector 13c and 13d negative electrodes and a portion 15b of the output of the negative electrode are connected together in this embodiment. Additionally, the collector of the positive electrode 111a and the portion 14a of the output of the positive electrode are connected together; and the collectors 111b and 111c positive electrode and the portion 14b of the output of the positive electrode are connected together. Since the width of the output 14, 15 of the electrode are separated and connected with many collectors 131a, 131b, 131c and 131d or collectors 111a, 111b and 111c, the distance between the extreme welded joints 20 in each part of the connection (corresponding to the length of It in Fig. 3) can be reduced to lessen the strain on the welded joints 20 and thereby effectively prevent folds in the output 14, 15 and electrode collectors 11a, 13a and discontinuities in welded joints 20.

[0059] In the present embodiment, the conductive segments 151 parts 15a and 15b of the output of the negative electrode remain isolated from each other by an insulating segment 152 in the inner space of the flat battery 1, so that the current generated by the electromotive force generating element 18, regardless flows through the conductive segments 151 parts 15a and 15b of the output of the negative electrode. In this configuration, the charging current can be enjoyed across the conductive segments 151 parts 15a and 15b of the output of the negative electrode respectively independently during charge the flat battery 1. Thus, it is possible, choosing routes driving current conductive segments 151 connected with the wires outside the flat battery 1, under the control of the control unit charging/discharging during charge/discharge, to selectively apply current, e.g., via conductors of the conductive segment 151 part 15a output of the negative electrode. If, for example, a short circuit or damage caused due to battery life close to the collector 131c of the negative electrode, the charge current can externally controlled so as not to flow through the portion 15c of the output of the negative electrode is connected with such short-circuited or damaged collector 131c of the negative electrode. This makes it possible to prevent a voltage drop caused by leakage current due to the flow of charging current through the short-circuited or damaged part. The discharge current may also be managed in such a way as not to flow through the short-circuited or damaged part at the time of discharge. This makes it possible to prevent variations of voltage flat battery 1.

[0060] Additionally, the slit 155 is formed between the conductive segments 151 parts 15a and 15b of the output of the negative electrode. When collectors 11a, 13a or output 14, 15 of the electrode expands during connection svarny the connections 20, the slit 155 is extended so as to prevent creases in the collectors 11a, 13a, at the same time maintaining the bonding strength of the welded joints 20. When collectors 11a, 13a or output 14, 15 of the electrode is compressed, the slit 155 is narrowed so as to prevent creases in the collectors 11a, 13a, at the same time maintaining the bonding strength of the welded joints 20.

[0061] In the present embodiment, the slit 155 corresponds to the neckline of the present invention.

[0062] [Fourth option exercise]

Fig. 12 is a view in cross section of a flat battery according to another exemplary variant of implementation of the present invention. Here the elements 16 and 17 of the shell is omitted in Fig. 18. The General structure of the flat battery 1 of the present version of the implementation is the same as the structure of a variant of implementation mentioned above with reference to Fig. 1 and 2.

[0063] the Flat battery 1 of this variant implementation differs from a battery of the above-mentioned first variant implementation in the structure of a junction between the output 14, 15 and electrode collectors 11a, 13a. As for the other configurations, the above descriptions of the first, second and third embodiments can be applied if necessary.

[0064] As shown in Fig. 12, the flat battery 1 includes four negative plate electrode 13 ITRI positive plate electrode 11, alternately layered together in this embodiment. Four collector 13a of the negative electrodes, which are numbered as 131a, 131b, 131c and 131d in order from the upper side, are connected by welding with the parts 15a, 15b, 15c and 15d output of the negative electrode, respectively. Three collector 11a of the positive electrodes, which are numbered as 111a, 111b and 111c in order from the upper side, are connected by welding with the parts 14a, 14b and 14c of the output of the positive electrode, respectively.

[0065] In the first embodiment, the output 14, 15 and electrode collectors 11a, 13a are connected together at the position of the connection related to the position of the sealing elements 16 and 17 of the shell. In the present embodiment, on the contrary, the output 14, 15 and electrode collectors 11a, 13a are connected together at a position closer connection to a generating element 18, than the position of connection of the first variant implementation.

[0066] the Output 14, 15 of the electrode is introduced towards the collectors 11a, 13a from the position of the sealing elements 16 and 17 of the shell. The output 15 of the negative electrode is divided into four layers in some middle point in the interior of the flat battery 1, while the output 14 of the positive electrode is divided into three layers in some middle point in the interior of the flat battery 1. Namely, one end of the pin 15 negative power is as divided into parts 15a, 15b, 15c and 15d output of the negative electrode; and one end of the output 14 of the positive electrode is divided into parts 14a, 14b and 14c of the output of the positive electrode.

[0067] Further, the connection part between the output 15 of the negative electrode collectors 13a will be explained below with reference to Fig. 13. Fig. 13 is an enlarged top view of part of the connection between the parts 15a, 15b, 15c and 15d output of the negative electrode and reservoir 131a, 131b, 131c and 131d negative electrodes. Here the elements 16 and 17 of the shell and a generating element 18 is omitted in Fig. 13. Since the connection part between the output 14 of the positive electrode collectors 11a of the positive electrode similar in structure to part of the connection between the output 15 of the negative electrode collectors 13a negative electrodes, an explanation of the connection parts between the output 14 of the positive electrode collectors 11a of the positive electrode will be omitted from this place.

[0068] the Output 15 of the negative electrode provides multiple conductive segments 15, each of which is covered with an insulating segment 152, so that the conductors of the conductive segments 151 output 15 of the negative electrode remain isolated from each other in the internal space of the flat battery 1. The conductors of the conductive segment 151 part 15a output negative e is ectrode joined by the weld connection 20 with header 131a of the negative electrode. Similarly, the conductors of the other of conductive segments 151 joined by the weld connection 20 with collectors 131b, 131c and 131d negative electrodes.

[0069] As mentioned above, the output 15 of the negative electrode is divided into parts 15a, 15b, 15c and 15d output of the negative electrode according to the number of collectors 131a, 131b, 131c and 131d negative electrodes, so that the collectors 131a, 131b, 131c and 131d are connected with the portions 15a, 15b, 15c and 15d output of the negative electrode, respectively, in the present embodiment. The separation of the output 15 of the negative electrode sections 155 formed in the insulating segment 152 in position between the parts 15a, 15b, 15c and 15d output of the negative electrode. The distance between the extreme welded joints 20 in each part of the connection can thus be reduced in order to lessen the strain on the welded joints 20 and thereby effectively prevent folds in the output 14, 15 and electrode collectors 11a, 13a and discontinuities in welded joints 20.

[0070] In the present embodiment, the conductive segments 151 parts 15a, 15b, 15c and 15d output of the negative electrode remain isolated from each other by an insulating segment 152 in the inner space of the flat battery 1, so that the current generated by the electromotive force generating element 18, not avisio flows through the conductive segments 151. In this configuration, the charging current may be fed through the conductive segments 151 independently appropriately during charge the flat battery 1. Thus, it is possible, choosing routes driving current conductive segments 151 connected with the wires outside the flat battery 1, under the control of the control unit charging/discharging during charge/discharge, to selectively apply current, e.g., via conductors of the conductive segments 151. If, for example, a short circuit or damage caused due to battery life close to any of the collectors 13a of the negative electrode, the charge current can externally controlled so as not to flow through the portion 15c of the output of the negative electrode is connected with such short-circuited or damaged collector 13a of the negative electrode. This makes it possible to prevent a voltage drop caused by leakage current due to the flow of charging current through the short-circuited or damaged part. The discharge current may also be managed in such a way as not to flow through the short-circuited or damaged part at the time of discharge. This makes it possible to prevent variations of voltage in the flat battery 1. The same applies to prevent voltage drop and voltage deviations in the flat BA is the Ares 1, caused by current leakage on the side of the positive electrode.

[0071] Additionally, sections 155 formed in the insulating segment 152 at positions between the conductive segments 151 output 15 of the negative electrode in the present embodiment. When collectors 11a, 13a or output 14, 15 of the electrode expands during connection of welded joints 20, sections 155 expanded to thereby prevent folds in the collectors 11a, 13a, at the same time maintaining the bonding strength of the welded joints 20. When collectors 11a, 13a or output 14, 15 of the electrode is compressed, sections 155 narrowed to thereby prevent folds in the collectors 11a, 13a, at the same time maintaining the bonding strength of the welded joints 20.

[0072] This version of the implementation can be modified so that at least any one of the output 14 of the positive electrode and the output 15 of the negative electrode has a lot of parts output electrode connected to the respective collectors 11a, 13a.

[0073][Fifth variant implementation]

Fig. 14 is an enlarged top view of a junction between the output 15 of the negative electrode collectors 13a of the negative electrode according to another exemplary variant of implementation of the present invention. Here the elements 16 and 17 of the shell and a generating element 18 is omitted is a of Fig. 14. The connection part between the output 14 of the positive electrode collectors 11a of the positive electrode similar in structure to the connection parts between the output 15 of the negative electrode collectors 13a of the negative electrodes.

[0074] the Output 15 of the negative electrode and three collector 13a of the negative electrodes are connected together by ultrasonic welding, for example, six welds 20. The output 15 of the negative electrode has a conductive segment 151 with many conductors in the form of a cable, another type conductive segment 156 and the insulating segment 152 covering the conductive segment 151 and another type conductive segment 156. Conductive segment 151 has six flat conductors in the form of a cable formed of a conductive material (conductor material)such as copper. Another type conductive segment 156 formed from a conductive material other than a conductive segment 151, and more specifically, formed as a cable of another metal. For example, another type of conductive segment 156 may be formed of Constantan, etc. Thus, another type of conductive segment 156 is another type of metal or semiconductor that is different from the conductive segment 151. Five conductors conductive segment is 151 and conductor (or semiconductor) another type conductive segment 156 is formed so to run from the manifold 13a of the negative electrode to the external outer edges of the elements 16 and 17 of the shell.

[0075] Each of the conductive segment 151 and another type conductive segment 156 is covered with an insulating segment 152 so that the insulating segment 152 holds the lateral surface of the flat conductors of the conductive segments 151 and conductor of another type conductive segment 156 and stores at least one of the conductors of the conductive segment 151 isolated from the conductor of another type conductive segment 156.

[0076] the Output 15 of the negative electrode as a whole can be flexible, as mentioned earlier. The ends of the conductors of the conductive segment 151 and the ends of the conductor of another type conductive segment 156 is exposed from the insulating segment 152 in both end parts of the output 15 of the negative electrode. One of the bare ends of each conductor conductive segment 151 or other type of conductive segment 156 is connected by welded connection 20 with collectors 13a of the negative electrodes. The other bare end of each conductor conductive segment 151 or other type of conductive segment 156 is connected to the wire on the outside of the flat battery 1.

[0077] Thus, the conductive segment 151 and another type of conductive segment remain isolated from each other by an insulating segment 152 in the inner space of the flat battery 1. Here is another type conductive segment 156 and the collectors 13a negative electrodes, usually made of various kinds of metals. There is a danger of corrosion (galvanic corrosion) in the welded connection 20, where these various kinds of metals are held in contact with each other. In order to prevent such corrosion, polymer tape can be glued to sealing weld connection 20 different type conductive segment 156.

[0078] In the above structure, the internal temperature of the flat battery 1 can be detected by the conductive segment 151 and another type conductive segment 156. Since the conductive segment 151 and another type conductive segment 156 remain isolated from each other in the internal space of the flat battery 1, the output current generating element 18 flows to the battery outside independent conductive paths, the conductive segment 151 and another type conductive segment 156. When the internal temperature of the flat battery 1 is transmitted to the conductive segment 151 and another type conductive segment 156, there occurs a difference in temperature between the conductive segment 151 and other type conductive segment 156. As another type of conductive segment 156 is formed from whom the material, non-conductive segment 151, a voltage occurs between the conductive segment 151 and other type conductive segment 156 by means of the Seebeck effect. The outer ends of the conductive segment 151 and another type conductive segment 156 battery removed from the flat battery 1 and is connected to the voltage detector, so that the internal temperature of the flat battery 1 can be determined by detecting the voltage sensor voltage. Namely, the conductive segment 151 and another type conductive segment 156 serve as points of contact with the sensor voltage; and a voltage sensor is used as sensor for detecting the temperature of the internal space of the battery.

[0079] Typically, the temperature sensor such as a thermocouple, is located outside the flat battery 1 so that the internal temperature of the battery indirectly measured by means of thermocouples for controlling charging/discharging of flat battery 1. When the temperature sensor such as a thermocouple, is located in the element 16, 17 of the shell of the battery, to measure the temperature of the battery through the element 16, 17 of the shell, it cannot be said that the sensor shows a sufficient response to the increase in the internal temperature of the battery. In the present embodiment, the internal temperature of the battery is measured through the conductive Sigma is the 151 and another type conductive segment 156, as referred to above. This makes it possible to increase in response to changes in temperature of the battery and improving the accuracy of detecting the internal temperature of the battery compared with the case where the temperature sensor is located on the outside of the battery, to measure the battery temperature.

[0080] In the present embodiment, the conductive segments 151 and another type conductive segment 156 are provided, but need not necessarily be provided in the form of a cable. Alternatively, the conductive segments 151 and 156 can be provided in the form of, for example, a thin plate of metal findings. Although five conductors provided in the conductive segment 151 in the present embodiment, the number of conductors in conductive segment 151 is not limited to five.

Enough to at least the output 14, 15 of the electrode was formed from two or more different types of metal and/or semiconductor material and connected to the reservoir 11, 13.

Examples

[0081] the Flat battery according to the present invention was tested on the subject of useful actions insulating segment 152 and section 155 in examples 1 and 2 and on the subject of beneficial effects of another type conductive segment 156 in example 3 as follows.

[0082][Example 1]

Each of the ten samples (N=10) was produced by the use of the output 15 of the negative electrode in Fig. 3. In each sample the output 15 of the negative electrode and three collector 13a of the negative electrodes were connected together by ultrasonic welding six welds 20, as shown in Fig. 15.

[0083] After the ultrasonic welding collector 13a of the negative electrode was visually checked to evaluate the occurrence or absence of folds in the collector 13a of the negative electrode. Collector 13a of the negative electrode was subsequently kept in a thermostat at a temperature of 200°C for 30 minutes and then visually inspected to assess the occurrence or absence of folds in the collector 13a of the negative electrode. The test results are shown in table 1.

[0084][Example 2]

Each of the ten samples (N = 10) was performed using the output 15 of the negative electrode in Fig. 13. In each sample portion 15a of the output of the negative electrode and the collector 131a of the negative electrode were connected together by ultrasonic welding two welded connection 20; output 15b of the negative electrode and the collector 131b of the negative electrode were connected together by ultrasonic welding two welded connection 20; and the output 15c of the negative electrode and the collector 131c of the negative electrode were connected together by means of ultrasonic welding is via two welded connection 20, as shown in Fig. 16.

[0085] in The same manner as in example 1, the occurrence or absence of folds in the collector 13a of the negative electrode was evaluated by visual inspection after ultrasonic welding and after aging at 200°C for 30 minutes.

[0086][Comparative example 1]

As a comparative example for examples 1 and 2, each of the ten samples (N=10) was produced using the negative electrode without insulating segment 152. In each sample the output 15 of the negative electrode and three collector 131a, 131b and 131c of the negative electrodes were connected together by ultrasonic welding six welds, as shown in Fig. 17.

[0087] in The same manner as in examples 1 and 2, the occurrence or absence of folds in the collector 13a of the negative electrode was evaluated by visual inspection after ultrasonic welding and after aging at 200°C for 30 minutes.

As can be seen from the test results of table 1, the probability of occurrence of folds was 60% (folds were found in six out of ten samples) directly after ultrasonic welding in comparative example 1. On the other hand, the likelihood of wrinkles was reduced to only 10% in example 1 and to 0% in example 2. The probability of occurrence of folds increased to 100% after 200°C×30 minutes in comparative example 1, but was limited to only 10% in example 1, and 0% in example 2.

[0089][Example 3]

Samples of flat batteries were produced, as shown in Fig. 18 and 19. In this example, the output 15 of the negative electrode was divided into four parts 15a, 15b, 15c and 15d output of the negative electrode. Parts 15a, 15b, 15c and 15d output of the negative electrode were connected with collectors 131a, 131b, 131c and 131d negative electrodes, respectively, by ultrasonic welding. The output structure of the negative electrode in Fig. 14 was applied to part 15b of the output of the negative electrode, so that part 15b o negative ele is trade had conductive segment 151 with five conductors and another type conductive segment 156.

[0090] Another type of conductive segment 156 was formed as a conductor of Constantan, whereas the conductors of the conductive segment 151 formed of copper. Part 15b of the output of the negative electrode was completed by coating the conductors of the conductive segment 151 and another type conductive segment 156 polymeric material. Protective tape was used to cover part of the contact with the electrolyte in the vicinity of the welded connection of the conductor of another type conductive segment 156 and welded connections of one of the conductors of the conductive segment 151 adjacent to any other type of conductive segment 156.

[0091] On the side of the positive electrode was provided by three of the positive electrode collector. Conclusion the positive electrode was divided into three parts o the positive electrode so that a part of the output of the positive electrode was welded to the positive electrode collectors, respectively. The structure of the connection part of the positive electrode was similar to the structure of the side of the negative electrode except that a different type conductive segment 156 was not provided in the output of the positive electrode.

[0092] thus Obtained generating the item was Packed in an aluminum elements 16 and 17 Obolo the key. The inner space formed by the elements 16 and 17 of the shell was filled with electrolyte. Thus was obtained a sample of flat battery 1.

[0093] the Sample was tested by the following method of test. Using the DC charging current flat battery 1 has been charged to increase the state of charge (SOC) is a flat battery from 10% to 80%. During the SOC changes from 10% to 80% of the internal temperature of the battery was measured at SOC increments of 10%. The internal temperature of the battery was determined upon detection of the potential difference between the conductive segment 151 and other type conductive segment 156 of the sensor voltage, according to the result of detection of the voltage sensor and the Peltier coefficient on the basis of the metals contained in the conductors of the conductive segment 151 and another type conductive segment 156. The test results shown in Fig. 20.

[0094][Comparative example 2]

As a comparative example to example 3, the sample flat battery was produced in the same manner as in example 3 except Explorer conductive segment 151 instead of the Explorer type other conductive segment 156.

[0095] As shown in Fig. 19, thermocouple 300 was glued to the element 16 of the shell in order to measure the external temperature of the battery is. Charging the battery to increase SOC from 10% to 80%, using the DC charging current, the external temperature of the battery was measured at SOC increments of 10% during the charge SOC from 10% to 80% in the same manner as in example 3. The test results shown in Fig. 20.

[0096] Fig. 20 is a graph showing the temperature characteristics relative to SOC flat batteries of example 3 and comparative example 2. In Fig. 20, the horizontal axis represents the SOC; the vertical axis represents the temperature of the battery; the test results of example 3 are indicated by round marks; and the test results of comparative example 2 is indicated by triangular marks. Because battery charging was carried out using a constant current source, as mentioned above, SOC increased linearly with time. Thus, it can be considered that the horizontal axis represents the time in Fig. 20.

[0097] As can be seen from the test results in Fig. 20, the growth temperature was earlier in example 3 than in comparative example 2. This is due, presumably, to the fact that in comparative example 2, the temperature of a generating element 18 was detected mediated through item 16 of the sheath, so that the temperature rise was slow.

[0098] while the SOC has reached 80%, was the difference between detektirovanie temperatures in example 3, and compare the flax example 2, as shown in Fig. 20. However detektirovaniya temperature in comparative example 2 was 37°C, i.e. the same as detektirovaniya temperature in example 3, after 5 minutes in a state where the SOC was 80%. From these results, it was confirmed that the response to the temperature of the flat battery 1 was faster in example 3.

1. Flat battery containing:
a generating element accommodated in the internal space formed by sealing the outer outer edges of shell elements;
the collector is connected to the plate electrode generating element;
the output electrode is led out from the external of the outer edges of shell elements,
moreover, the output electrode includes a conductive segment covering and connected with the reservoir, and releasing tension segment formed from a material having a higher elasticity than the material of the conductive segment
conductive segment has a lot of wires running from the manifold to the outside of the outer edges of shell elements,
stress relieving segment placed between multiple conductors.

2. Flat battery according to claim 1, in which the output electrode is of a different type conductive segment formed from a material different from the material of the conductive segment; and in which the ow stress segment adapted, in order to maintain the conductive segment and another type of conductive segments insulated from each other.

3. Flat battery according to claim 2, in which the conductive segment and another type of conductive segments serve as points of contact with the sensor for detecting the temperature of the interior space.

4. Flat battery according to any one of claims 1 to 3, in which the stress relieving segment shaped neckline, so as to run from the manifold to the outside of the outer edges of the shell elements.

5. Flat battery according to claim 1, in which the stress relieving segment in positions between multiple conductors formed of a hollow.

6. Flat battery according to any one of claims 1 to 3, in which many collectors layered in the inner space; in which the output electrode has multiple conductive segments, one of which is connected to any of the collectors and the other of which is connected to the other of the headers.

7. Flat battery according to claim 6, in which the stress relieving segment placed between one of the conductive segments and the other of the conductive segments; and which stress the segment shaped neckline.

8. Flat battery according to any one of claims 1 to 3, in which many collectors layered in the internal space; and an output electrode has many conductive segment the clients, which are connected by many collectors, respectively.

9. Flat battery according to claim 6, in which the stress relieving segment adapted to support multiple conductive segments insulated from each other.

10. Flat battery of claim 8, in which the stress relieving segment adapted to support multiple conductive segments insulated from each other.