Thermal chemical source of current. RU patent 2507642.

IPC classes for russian patent Thermal chemical source of current. RU patent 2507642. (RU 2507642):

H01M6/36 - containing electrolyte and made operational by physical means, e.g. thermal cells (thermoelectric solid state devices H01L0035000000, H01L0037000000)

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Electrolyte for chemical current sources / 2506669
Invention refers to power engineering, in particular to development of compositions of lithium salts which can be used as melted electrolytes for chemical current sources. In order to expand range of concentrations with low melting temperature the suggested composition includes lithium wolframate as lithium salt with the following ratio of components by wt %: lithium bromide 68.97-71.83; potassium bromide 24.84-25.42; lithium molybdate 0.47-5.06; lithium wolframate 0.3-3.10.

Melted electrolyte for chemical current source / 2506668
Invention refers to electrical engineering, in particular, to development of melted electrolytes based on lithium and potassium salts for chemical current sources. Melted electrolyte for chemical current source that includes lithium metavanadate and potassium salts is distinguished by the fact that among potassium salts it contains bromide and metavanadate with the following ratio of components, by wt %: lithium metavanadate 33.26-35.20, potassium bromide 4.79-7.72, potassium metavanadate 57.08-61.11.

Molten electrolyte for chemical current source / 2489777
Molten electrolyte for a chemical current source, which contains lithium nitrate and bromide, further contains potassium bromide, with the following ratio of components, wt %: lithium nitrate 41.53-45.46, potassium bromide 24.07-25.80, lithium bromide 30.47-32.67. The disclosed electrolyte composition enables to lower the melting point of the electrolyte by 14-25°C and specific enthalpy of fusion by 99-87 kJ/kg.

Electrolyte for chemical current source / 2489776
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Thermal lithium current source / 2475898
Package of electrochemical elements and pyrotechnic heaters is affixed to the lid with the help of tension strips. The initiating pyrotechnic bands are affixed to mica plates, placed into the gap between the side surface of the package of electrochemical elements and the tension strip affixing the package to the lid, with subsequent application of (0.3-0.6) mm organosilicate coating on the package side surface, the coating strongly fixed along the perimeter with a glass-cloth tape impregnated with an organic-silicon varnish.

Method for manufacture of thermal insulation for thermal lithium current source / 2475897
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Method to assemble thermal chemical source of current / 2470416
Invention relates to electrical engineering and can be used in production of thermal chemical sources. According to the invention, the unit of electrochemical elements is pressurised on the cover with pressure in the range of (30-40) MPa, afterwards in the pressed condition height of the unit is measured, and based on the difference between the depth of the body and the height of the unit a gap is identified, which is filled with a set of asbestos gaskets pressed by the same pressure as the unit, at the same time the actual thickness of the set exceeds the rated one by (0.4±0.1)mm.).

Composition for pyrotechnic string-type igniter (psi), and its manufacturing method / 2461099
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Thermal chemical current source electrode manufacture method / 2456716
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Electrolyte for chemical current source / 2453014
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Pyrotechnical electric current supply / 2260228
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Pyrotechnical electric current supply / 2301479
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Pyrotechnical electric current supply / 2320053
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Method of tape piroheaters manufacturing / 2326470
Invention is related to thermal reserve sources of current (thermo-chemical batteries), which are actuated by inflammation of pyrotechnical elements, from the thermal impulse of adjacent tape igniters. In the invention the suspension is prepared in saturated water solution of potassium perchlorate, which is additionally contains lignosulphonate and as dispersed phase the dosed quality of potassium perchlorate, which is later connected with prepared latex dispersion in saturated solution of potassium perchlorate, at that lignosulphonate amounts to 8-12% from the mass of latex in recount to dry substance, removal of liquid phase is done with pressure differential on filter pad in the range of 0.08-0.10 MPa, and the prepared pyrotechnical composition is dried at the temperature of 16-80 °C up to humidity of not more than 0.4%, besides, the crushed asbestos fibres are preliminarily annealed and soaked in water for 30 minutes, and latex in introduced in suspension in the amount of 1 part from the mass of dispersed components. Suggested technical solution provides improvement of operation characteristics of reserve current sources, with provision of new indices of application to quick-burning, low gas tape piroheaters, which are flexibly adjacent to electrodes, in particular, faster speed of their burning with stable heat emission.

Thermal battery / 2369944
Invention is related to reserve chemical sources of current on solid body. According to invention thermal battery (TB) comprises unit of electrochemical elements (ECE), every of which consists of design number of solid layers of anode, cathode, electrolyte, heating elements, limited from external side by common body with heat and electric insulation. Unit of electrochemical elements (ECEU) is installed along vertical axis of body, is pressed in axial direction with specified force of design number of elastic elements with the possibility of this force value control by means of threaded element, additionally at ECEU ends there are passive ECE installed by one, body of TB is arranged as cylindrical of stainless steel with thickness of walls from 0.5 to 1 mm, anode of each ECE is made of single alloy LiB, cathode - out of mixture NiCl2 and electroconductive additive, electrolyte from mixture of thickener and eutectic, comprising salts of alkaline metals, from internal and end sides of cylindrical body there are layers of heat and electric insulation, between layers of active masses there are solid layers of heating elements, in cylindrical body there are through vertical slots in the form of windows, total area of which does not exceed 80% of its total side surface.

Thermal chemical current source / 2393591
Thermal chemical current source is activated by primer device in the unit end side. Z-shaped pyrotechnical strip is positioned in direct vicinity of the primer device in heat insulation pad slots along the diametre and transmits fire impulse from primer device to initiation strip mounted on opposite side surfaces of the unit and igniting pyrotechnical heaters of cell unit. Free state of pyrotechnical strip, required for fast and reliable fire impulse transfer from primer device to lateral initiation strips, is achieved by strip placement in heat insulation pad slots positioned at 180° to each other, with slot length of 0.54÷0.65 of the pad diametre. The effect can be amplified by installation of several Z-shaped pyrotechnical strips tilted against each other and contacting respective number of lateral initiation strips, in unit end sides. Maximum reduction of time of current source deployment to operation mode can be achieved by replacement of lateral initiation strips with thin pyrotechnical strip encircling at least 70% of the unit perimetre length.

Thermal source of current / 2413341
Thermal current source (TCS) comprises unit of electrochemical elements (ECE) in vessel in heat insulation, every of which comprises serially alternating solid layers of anode, cathode, electrolyte, heating elements in rated quantity, bordered at outer side by a common vessel with heat insulation, elastic element rigidly fixed on cover of TCS and arranged along vertical axis of vessel and pressed with specified force in axial direction with the possibility of adjustment of value of this force, indicator of initial condition control, facility of TCS initiation with system of electric igniters. Unit of ECE, system of electric igniters, initial condition control indicator (ICCI) of TCS are rigidly fixed on common base, rigidly fixed on cover of TCS in the form of printed circuit board. Electric circuit of ICCI is arranged in the form of printed conductor and is arranged between output contacts of ICCI. TCS comprises two elements - isolators arranged of copper wire with cross section area that is much less than area of section of printed conductor, at the same time in the centre of each element - isolator there are additionally installed pyrotechnical heaters arranged in the form of ribbon of material on the basis of pressed mixture of powdery titanium and oxidant, sensitive to heat pulse of electric igniters.

Thermal chemical current source / 2448393
Initiating pyrotechnical strips are tightly pressed to a unit of elements with a glass-woven tape with thickness of (0.12-0.15) mm, impregnated with a organosilicic varnish and forming a tight shell by coverage of layers by at least 1/2 of the tape width.

Method of manufacturing of pyrotechnical heater for thermal chemical current source / 2450390
Heating tablets are pressed at pressure of 200-300 MPa with hold pressure of within 20-30 s until density of 4.6-4.9 g/cm3 is obtained at average degree of powdered iron dispersion of 1.0-2.5 mcm and 4.9-5.2 g/cm3 at average degree of powdered iron dispersion of 2.5-5.0 mcm respectively.

FIELD: electricity.

SUBSTANCE: body of a thermal chemical source of current comprises two diametrically arranged compartments with blocks of electrochemical elements placed into them, which are electrically not connected to each other and receive initiating pulses from an ignition device, enclosed into a cylindrical shell directed with an open end towards a flame force splitter, made in the form of a triangular prism, installed in the centre on a metal partition that separates compartments, at the same time the sharp angle between the faces of the prism facing towards the ignition device makes (70-80)°. Positive effect may be increased by making several compartments at one level relative to the base of the body. In this case the flame force splitter shall have the form of a pyramid with the number of faces corresponding to the number of compartments. At the same time the angle of the pyramid top facing the ignition device corresponds to the above.

EFFECT: increased reliability of operation and reduced time of process stabilisation.

1 dwg

The present invention relates to the electrical industry, can be used in the production of thermal chemical sources of current.

Known thermal chemical current source containing placed in a case and sealed lid unit, consisting of successive electrochemical cells and pyrotechnic heaters, Flammability of ignition device, located at the base of the case [RU №2091918 C1, cl. H01M 6/36, from 27.09.1997,].

The current source has low capacitance, which is explained by the limited number of electrochemical cells that can be placed in a single housing. This, in turn, determines the limitations of its operational capabilities.

Closest to the technical nature and achieve results is thermal chemical current source [.. and other Thermal chemical sources of a current, p.118, Publishing house of the Rostov University, 1989], which contains placed in a case and sealed lid unit, consisting of successive electrochemical cells and pyrotechnic heaters, Flammability of ignition device.

To improve the electric capacity in one case can be placed several blocks electrochemical cells, United unified energy chain.

Placement of blocks in a single case and their joining the unified energy chain reduces the reliability of the power supply so that a failure of one of the blocks leading to a denial of the work of the current source. In addition, such a power source has overestimated the time of an exit for operating conditions and limited use.

The purpose of the proposed technical solution is improved reliability, reducing the time to enter the mode and expansion of operational possibilities.

With this purpose it is proposed a thermal chemical current source containing placed into the body and sealed with a lid block, consisting of successive electrochemical cells and pyrotechnic heaters, Flammability from igniting device is installed in the body, characterized in that the body contains two diametrically opposite compartment with placed them in blocks of electrochemical cells, not electrically connected with each other and receiving originating impulse from the ignition device, concluded in shell, open end aimed at divider flame, made in the form of a triangular prism placed in the centre of the metal partition separating compartments, with the acute angle between the edges of the prism, facing igniting device is (70-80)degrees.

Positive effect can be increased by performing at the same level relative to the base enclosure several compartments. In this case divider flame should take the form of a pyramid with the number of faces, relevant number of compartments. The angle of the top of the pyramid, facing the device corresponds to the above range.

Execution in one case two or more compartments with placed in them electrically independent blocks of electrochemical elements contained in the working condition from one igniting device improves reliability of the power source. Due to the decrease of overall dimensions at preservation of electric capacity, comparable with the prototype, reduced time of an exit for operating conditions. Expanding service capabilities, as can be produced from each block of electrochemical cells, and through their connections in various combinations outside of the current source in a single electrical circuit.

Electric shell in which placed igniter accumulates and thereby cooling the particles flame external structural elements, connecting the igniter and housing power source. Force flame organised stream is sent to the spreader.

The angle between the edges of the prism in the range (70-80)OC determined by the necessity to divide the force of fire ignition device on two diametrically directional flow and without loss of heat energy direct them into channels, made in the cover and connecting the igniter with compartments.

When the corners of the divider more or less the limits of the selected band are not all the glowing particles flow is directed toward compartments, is the loss of their thermal energy. This reduces the reliability of arson pyrotechnic heaters block of electrochemical cells.

Figure 1 shows the proposed source of current. Case 1 made two bays 2, which placed the collected on the cover 3 blocks consisting of successive electrochemical cells 4 and pyrotechnic heaters 5, the ignition of which is carried out from the ignition device 6, placed in shell 7.

When initiating the ignition device force flame gets on divider flame 8 installed on the center of the metal wall 9, separating compartments. After divider force flame is divided into two diametrical thread, which, through the channels of 10, performed in the basis of 11 of the housing, be sent incendiary channels 12 units, generating burning pyrotechnic heaters.

Blocks can be performed without channels. In this case, in the channels of the Cabinet base fit pyrotechnic strip, which transmit pulse of heat on the same lanes on a lateral surface of the block.

To reduce heat loss blocks are surrounded by insulation 13.

Voltage of blocks is removed through 14 made on the cover of each block. Thus, electrical circuit blocks within the casing of the current source, not linked and can feed different energy consumers. In case of necessity electricity outputs blocks can be with regard to electricity consumers outside of the hull current source.

Thermal chemical current source containing placed in a sealed housing cover block, consisting of successive electrochemical cells and pyrotechnic heaters, Flammability from igniting device is installed in the body, characterized in that the body contains two diametrically opposite compartment with placed them in blocks of electrochemical cells, not electrically connected to each other, and receiving the originating impulse from the ignition device enclosed in a cylindrical shell, open end aimed at divider flame, made in the form of a triangular prism placed in the centre of the metal partition separating compartments, with the acute angle between the edges of the prism, facing igniting device is (70-80)degrees.