Method of filling sealed accumulator with gel-like sulphuric acid electrolyte

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, namely to method of filling sealed lead-acid accumulators with gel-like sulphuric acid electrolyte. Method involves filling of sealed lead storage battery with sulphuric gel-like electrolyte by creating negative pressure of gases in accumulator, feeding electrolyte and holding for impregnation of porous active mass of electrodes and separators with electrolyte, wherein evacuation and supply of electrolyte is made cyclically, and holding is performed at atmospheric pressure of gases. Fabricated accumulator has larger by 15-20 % value of current density in nominal and peak discharge modes, as well as higher by 11-20 % capacity and specific energy. Optimal value of negative pressure of gases in storage battery at cyclic filling with gel electrolyte makes 40-60 kPa, and duration of holding for impregnating pores of active masses of accumulator is 20-30 seconds.

EFFECT: technical result of invention is increased specific energy and density of discharge current of lead-acid battery due to improved impregnation of porous active mass of electrodes and separators of electrolyte.

1 cl, 1 tbl

 



 

Same patents:

FIELD: electricity.

SUBSTANCE: invention is related to manufacture of accumulator battery separators. The method for manufacture of heat-resistant and high-strength separator of a superfine fibre includes the following stages: air-blast electrospinning of the mixed solution containing from 50 up to 70 wt % of heat-resistant polymer material and from 30 up to 50 wt % of swellable polymer material thus forming a porous tissue made of the heat-resistant superfine fibre where heat-resistant polymer material and swellable polymer material are united in the form of the superfine fibre; drying in order to control content of the solvent and moisture remained at the surface of porous tissue; thermal compression of the dried porous tissue at a temperature within the range of 170 and 210°C.

EFFECT: invention suggests the porous separator of the superfine fibre with heat-resistance and high strength and the method for its manufacture as mass production of the heat-resistant and high-strength separator of the superfine fibre using air-blast electrospinning (AES), as well as an accumulator battery using such separator.

24 cl, 9 dwg, 2 tbl, 7 ex

FIELD: electricity.

SUBSTANCE: disclosed are lithium batteries, having (a) a separator/cathode assembly, having a cathode current collector layer situated between a first cathode layer and a second cathode layer and a porous separator layer on the side of said first cathode layer, wherein said first cathode layer is coated directly on said separator layer; (b) a separator/anode assembly, having an anode current collector layer situated between a first anode layer and a second anode layer and a porous separator layer attached on the side of said first anode layer, wherein said first anode layer is coated directly on said separator layer; and (c) an electrolyte, wherein said battery comprises alternating layers of said separator/cathode assembly and said separator/anode assembly. In the preferred version, separator/cathode assembly and separator/anode assembly sections are not in contact with each other and electric connections of the edges are made through said sections. Methods of making said batteries are also disclosed.

EFFECT: high energy and power density of lithium batteries with high efficiency of production thereof.

15 cl, 9 dwg

FIELD: batteries assembled of electrochemical cells.

SUBSTANCE: proposed battery has plates constituting assembly of cells of which two extreme ones are made in the form of cathodes whose current collectors are coated on one side with active cathodic materials applied to their first surfaces; other sides of cathode current collectors non-coated with active cathodic materials are facing outside of this cell in assembly and thickness of cathode current collectors amounts to 70-150% of that of active cathodic material coating.

EFFECT: enhanced safety in operation.

3 cl, 3 dwg, 1 tbl

FIELD: electrical engineering.

SUBSTANCE: proposed packing arrangement for polymeric lithium-ion battery has battery case incorporating bottom multilayer polymer and top multilayer polymer, bottom one having inner space of desired size for accommodating at least one electrode assembly and electrolyte and is provided with protruding section radially and outwardly spreading from upper edge of each vertical section of bottom multilayer polymer; part of top multilayer polymer is joined for rotation with part of protruding section of bottom multilayer polymer, and remaining parts of top multilayer polymer are sealed from remaining parts of protruding section of bottom multilayer polymer; it also has battery protective component that encloses outer periphery of battery case so that battery members inserted in battery case can be protected against outward impacts; it is secured as integral part by means of part of sealed protruding sections.

EFFECT: ability of battery protection against outward impacts, minimized size of battery.

8 cl, 8 dwg

The invention relates to a positive electrode materials for rechargeable batteries

FIELD: electrical engineering.

SUBSTANCE: first, storage battery pores volume is filled with liquid electrolyte sulphate, then, remaining volume is filled with gel electrolyte sulphate. Note here that storage battery is filled in two steps: during first step, entire volume of storage battery is filled with liquid electrolyte (sulphuric acid solution). After allowance, electrolyte is rained from storage battery except for that existing in threshold volume of electrode unit. During second step, free volume is filled with young colloid solution of sulphuric acid (sulphuric acid solution with addition of stiffener - aerosil with concentration of (5.6÷9%) with subsequent allowance until colloid solution is completely structured and gel is formed in storage battery.

EFFECT: higher efficiency of filling sealed lead storage batter with electrolyte and specific capacity properties.

1 tbl

FIELD: electrical engineering; lead battery manufacture.

SUBSTANCE: proposed lead battery has strengthened active material on its positive plate thereby enhancing its utilization efficiency at low internal resistance of battery. Novelty is that only positive plates hold in their voids gel-like sulfuric-acid electrolyte and remaining space of battery is filled with liquid sulfuric acid electrolyte.

EFFECT: enlarged service life of battery.

1 cl, 1 tbl

FIELD: electrical engineering; liquid silicate electrolyte and its use for storage batteries.

SUBSTANCE: proposed electrolyte preparation process includes addition of silicic acid sol in the amount of 5 - 15 parts by weight containing silicon dioxide (SiO2) in the amount of 40 - 60 mass percent to water taken in the amount of 15 - 20 parts by weigh while stirring mixture until its concentration, as measured by Baume hydrometer, ranges between 0.65 and 0.85 Baume degrees; addition of inorganic acid to mixture obtained in the process until its pH ranges between 1 and 4; placement of mixture obtained into magnetic field whose flux density ranges between 0.1 and 0.6 T (between 1000 and 6000 G) for 5 to 10 minutes; and stirring of magnetized mixture upon its withdrawal from magnetic field until its dynamic viscosity becomes lower than 0.02 mP-s to obtain low-sodium-content liquid electrolyte. Storage battery using proposed electrolyte is characterized in specific power capacity of 53 W and higher, its service life is increased from 350 to 400 or more charge-discharge cycles; such battery will operate normally at low and high temperatures, its operating temperature range being between -50 and +60 °C.

EFFECT: enhanced capacity and service life, enlarged operating temperature range of battery using proposed electrolyte.

7 cl, 2 dwg, 2 ex

FIELD: electrical engineering; separators for sealed absorbed-electrolyte lead batteries.

SUBSTANCE: proposed glass fiber blanket separator characterized in optimal porous structure aiding in complete absorption of electrolyte is, essentially, composition of microporous spatula glass fibers of microscopic thinness, fiber mean diameter being 0.35 to 0.40 and 0.22 to 0.25 μm and chemically resistant latex as binder, proportion of components being as follows, mass percent: fiber whose mean diameter is between 0.35 and 0.40 μm, 78 - 80; fiber whose mean diameter is between 0.22 and 0.25 μm, 15 - 17; chemically resistant latex, the rest.

EFFECT: reduced electrical resistance and enhanced mechanical strength ensuring high separating properties.

1 cl, 1 tbl, 4 ex

The invention relates to the production of batteries, in particular to a method of filling electrolyte

The invention relates to the field of electrochemistry, and more particularly to the use of special additives to improve the technological properties of electrolytes in lead-acid batteries

FIELD: electricity.

SUBSTANCE: according to the invention, an energy accumulation device comprises at least one negative electrode, besides, each negative electrode is separately chosen from the following: (i) an electrode containing a material of a negative battery electrode; (ii) an electrode containing a material of a capacitor electrode; (iii) a mixed electrode containing either a mixture of materials of a battery electrode and a capacitor electrode or a section of a battery electrode material and a section of a capacitor electrode or their combination, besides, the energy accumulation device comprises either at least one electrode of the (iii) type or at least one electrode of each of (i) and (ii) types, at least one positive electrode, besides, the positive electrode contains a material of a positive battery electrode and an additive increasing charging capacity, such as one additive or a mixture of a carbon nanomaterial, a carbon fibre grown from vapours, fullerene or their mixture and conducting materials based on stannum oxide.

EFFECT: increased service life.

33 cl, 25 dwg, 3 tbl, 11 ex

FIELD: electricity.

SUBSTANCE: lead-acid battery comprises a negative electrode, comprising an electrode material of a battery on the basis of lead and an area of a capacitor material lying above the battery electrode material on the basis of lead. Each electrode is in electric connection with one external output of the battery, and at least one positive battery electrode on the basis of lead dioxide, besides, each positive electrode is in electric connection with the second external output of the battery, a separator installed between electrodes facing each other, electrode filling at least the space of these electrodes and separators, at the same time the capacitor material lying above the battery electrode material on the basis of lead contains 20-65 wt % of carbonaceous material with high electric conductivity, 30-70% carbonaceous material with high specific area of the surface, at least 0.1% of lead and a binder.

EFFECT: higher service life and improved performance properties.

21 cl, 2 dwg, 13 ex

FIELD: electricity.

SUBSTANCE: paste for negative electrode contains plumbum dust, H2SO4, expander that includes BaSO4, sodium lignosulphonate and water, additionally it contains soft carbon with the following proportion of components, wt %: H2SO4 8-10 BaSO4 0.3-0.5 sodium lignosulphonate 0.1-0.2 soft carbon 0.2-0.3 water 7-8 plumbum dust the rest, note that BaSO4 grain size does not exceed 10 nm; additionally the paste can contain polyvinyl-chloride fibre in quantity of 0.03-0.06 wt %. Method of preparation of paste for negative electrode by mixing plumbum dust, H2SO4 and expander consists in, first, mixing of plumbum dust and expander for 8-15 minutes, then adding of water, the mixture is stirred for 8-15 minutes, after that H2SO4 is added during stirring with speed 0.7-0.8 l/min, note that the mixture temperature is maintained within 30-70°C.

EFFECT: increase of battery service life and prevention of battery capacity loss.

FIELD: electricity.

SUBSTANCE: according to the invention, the paste for the positive electrode of the lead accumulator contains a lead powder, a sulfuric acid, an silicon oxide of trade marks "Silicon dioxide", GOST 9428-73 (PFK KHIMLUKS, Moscow) or "Ekosil-melur - 3" (LLC Trading House "Quartz", St. Petersburg (GU).

EFFECT: development of a paste that is most simple in a technological respect, provides for high mechanical strength of positive electrodes with preservation of their high porosity, kinetic capacitance and their increased service life.

1 tbl

FIELD: engines and pumps.

SUBSTANCE: electrolytic device for facilitating the internal combustion engine lowering includes storage battery, storage tank of concentrated electrolyte with built-in hydro-electric valve-pump and pneumatic valve. At that, heating element is arranged in the tank.

EFFECT: improving operating reliability of storage battery under conditions of low temperatures at internal combustion engine start-up.

1 dwg

FIELD: electricity.

SUBSTANCE: method for determination of discharge degree for lead-acid battery (LAB) consists in the following: before tests using empirical formula, which sets functional relation of LAB discharge degree ΔC on change of electrolyte density Δρ at discharge, value of specific discharge index ΔCsp is determined with use of electrolyte temperature t, rated LAB capacitance Cr ΔC=f(Δρ, ΔCsp, t, Cr), (1); during tests electrolyte density ρ and temperature t are measured and using formula (1) degree of LAB discharge is determined; additionally before tests to determine value of specific discharge index empiric formula is used, which considers individual characteristics of LAB and sets dependency of its specific discharge index ΔCsp on value of theoretical specific discharge index of LAB ΔCsp min - ΔCsp=ΔCsp minxKv (2); correction factor Kv for individual characteristics of tested LAB sets relation between values of actual specific volume of electrolyte Vel sp and theoretic minimum specific volume of electrolyte Vsp min. Kv=Vel sp /Vsp min (3); using these values and functional relation (1) discharge degree ΔC is determined for LAB.

EFFECT: improvement in accuracy of discharge degree determination for operated lead-acid batteries.

4 dwg, 1 ex

FIELD: electrical engineering.

SUBSTANCE: first, storage battery pores volume is filled with liquid electrolyte sulphate, then, remaining volume is filled with gel electrolyte sulphate. Note here that storage battery is filled in two steps: during first step, entire volume of storage battery is filled with liquid electrolyte (sulphuric acid solution). After allowance, electrolyte is rained from storage battery except for that existing in threshold volume of electrode unit. During second step, free volume is filled with young colloid solution of sulphuric acid (sulphuric acid solution with addition of stiffener - aerosil with concentration of (5.6÷9%) with subsequent allowance until colloid solution is completely structured and gel is formed in storage battery.

EFFECT: higher efficiency of filling sealed lead storage batter with electrolyte and specific capacity properties.

1 tbl

FIELD: electrical engineering.

SUBSTANCE: method and device for continuous mixing and applying paste on plate grid to be used in lead-acid batteries wherein granulated lead oxide, water and sulfuric acid react in elongated mixer. Note here that mixing-to-transfer ratio approximates from 65:35 to 80:20 with reaction temperature adjustment to produce resultant product temperature varying from about 60°C to about 80°C. Reinforcing fibers in amount of 0.6% of lead oxide weight, coal powder and graphite powders in amount of 6% of lead oxide weight can be added to said paste.

EFFECT: continuous production of active mass and its uniform application on plates.

15 cl, 10 dwg, 1 tbl

FIELD: physics.

SUBSTANCE: electrode (30) has a plate (31) which has a main surface to which a separate relief template (32) was initially attached for directing deposition and/or holding electrolyte paste adjacent to the plate (31).

EFFECT: high power and energy density, long life of the battery.

13 cl, 13 dwg, 2 ex

FIELD: electricity.

SUBSTANCE: invention refers to electrical industry and can be used for manufacture of lead-acid batteries. According to invention, electrode includes current collector, terminal and active mass. Current collector consists of two nets connected to each other. On surface of nets there located is carbon layer. Terminal is located between nets. Upper edges of nets are above terminal plank and connected to each other. Each of the nets is made from two-layered material. Outer net layer is made from high-adhesive polymer, and inner layer is made from solid polymer or fibre glass or carbon. Ratio of active mass weight to current collector weight is 6.0-16.0. When manufacturing current collector, nets are put one on the other and terminal is arranged between them. Upper edges of nets are located above terminal plank. Then the nets are connected to each other and at the same time, their upper edges and nets with plank and eye of terminal are connected. Current collector elements are connected for example by welding or gluing. Then to current collector surface there applied is carbon layer, for example by thermal or gas flame method, and current collector cells are filled with active mass.

EFFECT: improving specific electrical characteristics.

2 cl, 4 dwg

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