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Quick-charging fully-sealed maintenance-free lead-acid storage battery

A lead-acid battery, fast charging technology, applied in the direction of lead-acid battery, lead-acid battery construction, battery electrodes, etc., can solve the problems of reducing hydrogen evolution overpotential, terminals can not use pure lead or lead-antimony alloy, etc., to shorten the charging time , Increase the chemical reaction rate, increase the effect of charging current

Active Publication Date: 2021-07-09
北京阳光鸿志电气工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For open-type batteries, the grid alloy and terminals are made of lead-antimony alloy. The welding performance of the two is similar, the welding is easy, and the hardness and strength of the terminals are also guaranteed; but for fully sealed maintenance-free lead-acid batteries, the internal grid The lead-calcium alloy and pure lead are used respectively for busbar and busbar. The presence of antimony element will reduce the hydrogen evolution overpotential, and the terminals cannot all use pure lead or lead-antimony alloy like the existing technology.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A fast-charging fully sealed maintenance-free lead-acid battery, in which a carbon-based material with a mass content of 0.2-2.0% and a composite additive of 0.06%-3.0% (accounting for the total weight of the lead paste) are added to the negative electrode paste formula, The carbon-based material is a high-specific-area carbon and graphite material, selected from one or more of mesoporous carbon, carbon nanotubes, activated carbon fibers, acetylene black, carbon black, expanded graphite, and graphene.

[0034] The specific surface area of ​​the carbon-based material is 5m 2 / g to 50m 2 / g range, the D10 particle size is 2-20μm.

[0035]A composite additive is added to the negative electrode paste, the composite additive is sodium lignosulfonate and a soluble porogen, and the soluble porogen is selected from one or more of PEG, PVA or PVP. The content of sodium lignosulfonate in the negative electrode paste is 0.06-1.0%; the content of soluble porogen is 0.5-3.0%. Thi...

Embodiment 2-4

[0040] The same preparation method as in Example 1 is adopted, except that the components and amounts of the composite additive and the carbon-based material are different. Its addition amount and charging situation are listed in Table 1.

[0041] In Table 1, ordinary batteries are lead-acid batteries that do not add composite additives or carbon-based materials to the negative electrode paste.

[0042] Table 1: Comparison of charging conditions of batteries with different capacities

[0043] storage battery Charging capacity 0 Ordinary battery 36.6Ah Example 1 Composite additive (0.2%+2.0%)+1.5% expanded graphite 85.4Ah Example 2 Composite additive (0.2%+2.0%)+0.1% expanded graphite 57.8Ah Example 3 Composite additive (0.2%+2.0%)+2.0% acetylene black 80.5Ah Example 4 Composite additive (0.2%+5.0%)+1.5% expanded graphite 75.0Ah

[0044] In practice, it has also been found that adding expanded graphite with a content...

Embodiment 5

[0046] In the fast-charging fully sealed maintenance-free lead-acid battery of this embodiment, expanded graphite and sodium lignosulfonate are added to the negative electrode paste, and the composition and ratio are the same as in Embodiment 1;

[0047] Addition of Bi in the range of 0.05% to the grid formulation of the battery 2 o 3 and 0.01% lanthanide additive, the lanthanide additive is commercially available, wherein the mass ratio of lanthanum salt and cerium salt is (0.2-5.0): (0.2-5.0).

[0048] The method of adding bismuth and lanthanide elements is: first put the lead-calcium alloy into the lead-melting furnace, slowly heat up to melt, and then heat up to 500°C-1600°C, then add the pulverized bismuth and lanthanide element powder into the lead-melt furnace. In the furnace, stir and keep warm for 10-30 minutes, so that the alloy is fully mixed and even. The liquid lead is then subpackaged and solidified into small lead-calcium alloy ingots containing bismuth and la...

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PUM

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Abstract

The invention provides a quick-charging fully-sealed maintenance-free lead-acid storage battery, which is characterized in that a carbon-based material with the mass content of 0.2-2.0% is added into a negative electrode lead paste formula, and the carbon-based material is a high-specific-area carbon and graphite material and is selected from one or more of mesoporous carbon, carbon nanotubes, activated carbon fibers, acetylene black, carbon black, expanded graphite and graphene; meanwhile, 0.06%-3.0% of a composite additive is added into the negative electrode lead paste, and the composite additive is sodium lignosulfonate and a soluble pore-foaming agent. By adding the carbon-based material and the composite additive into the negative electrode lead paste formula, the conductivity and the specific surface area of the negative electrode can be improved, the basic microporous structure can be optimized, and the ohmic resistance and the polarization resistance can be reduced, so that the electrochemical reaction rate and the charging current of the storage battery are improved, and the charging time is shortened.

Description

technical field [0001] The invention belongs to the technical field of chemical power sources, in particular to a fast-chargeable lead-acid battery. Background technique [0002] The batteries used in military special chassis power supply electrical systems are lead-acid batteries. Whether it is an open-type flooded battery or a valve-regulated sealed lead-acid battery, there is a problem of slow charging rate. For the equipment that needs to be stored in the warehouse for a long time and has a short start-up time, such as combat storage equipment, because the vehicle engine works for a short time, the time for charging the battery is also short. Limited by the charging rate and charging time, it is difficult for the battery to be fully charged. , causing the battery to be in a power-deficient state for a long time, and the battery loses the ability to start the engine and supply power to the outside world, and in severe cases, the life of the battery will be terminated prem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/12H01M10/42H01M4/62H01M4/56
CPCH01M10/12H01M10/4235H01M4/625H01M4/56Y02P70/50Y02E60/10
Inventor 秦绍利黄若云冯玉磊冯法文姜珩
Owner 北京阳光鸿志电气工程技术有限公司
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