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Lead acid storage battery

A technology of lead-acid battery and electrolyte, which is applied in the direction of lead-acid battery, lead-acid battery construction, battery, etc. It can solve the problems of broken ears and inability to output, and achieve the effect of excellent liquid reduction performance and excellent cycle life performance

Inactive Publication Date: 2019-07-19
HITACHI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the thinning of the ear part progresses further, the ear part will be broken, and it will suddenly fall into a situation where the output from the lead acid battery cannot be obtained.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095]

[0096] [Production of positive plate]

[0097] As the positive electrode current collector, a plate-shaped lead-calcium-tin alloy (calcium content: 0.05% by mass, tin content: 0.5% by mass) is prepared to cut a slit and stretch it so that the slit is enlarged. Expand the grid. 0.07% by mass of acrylonitrile fibers and 0.01% by mass of sodium sulfate were added to the lead powder prepared by the ball mill method as reinforcing short fibers, and dry-mixed to obtain a mixture containing the lead powder. The compounding quantity of acrylonitrile fiber and sodium sulfate is the compounding quantity based on the total mass of lead powder. Next, with respect to above-mentioned mixture containing lead powder, add 10 mass % water and 9 mass % dilute sulfuric acid (specific gravity 1.28) and carry out kneading, thereby make positive electrode material paste (water and dilute sulfuric acid each compounding amount is with lead powder The total mass of the standard compounding...

Embodiment 2～4

[0109] Except having adjusted the filling quantity of a positive electrode material and the filling quantity of a negative electrode material so that M2 / M1 may be the value shown in Table 1, it carried out similarly to Example 1, and obtained the lead acid storage battery of Examples 2-4. The content of the positive electrode active material (based on the total mass of the positive electrode material) and the content of the negative electrode active material (based on the total mass of the negative electrode material) after the chemical conversion in the lead accumulators of embodiments 2 to 4 are the same as that of the embodiment 1 is the same.

Embodiment 5～9

[0111] When producing the negative electrode current collector, the thickness D (thickness of the rolled sheet) of the negative electrode lug and the thickness d of the surface layer were rolled in such a manner that the values ​​shown in Table 1 were carried out, except that it was the same as in Example 1. According to the operation, the lead storage batteries of Examples 5-9 were obtained. In addition, the lead-calcium-tin alloy and the metal sheet used in Example 1 were used for the lead-calcium-tin alloy and the metal sheet. The content of the positive electrode active material (based on the total mass of the positive electrode material) and the content of the negative electrode active material (based on the total mass of the negative electrode material) after the chemical conversion in the lead storage battery of embodiments 5 to 9 are the same as those of the examples 1 is the same.

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Abstract

A lead acid storage battery according to the present disclosure is provided with: a positive electrode plate that comprises a positive electrode collector and a positive electrode material filled intothe positive electrode collector; a negative electrode plate that comprises a negative electrode collector and a negative electrode material filled into the negative electrode collector; and an electrolyte solution that contains sulfuric acid. This lead acid storage battery is configured such that: the negative electrode collector has a negative electrode lug part that is provided on the upper peripheral part of the negative electrode collector; the negative electrode lug part has a surface layer that contains Sn; and the ratio of the mass M2 of the electrolyte solution to the total M1 of themass of the positive electrode material and the mass of the negative electrode material (M2 / M1) is 0.7 or more.

Description

technical field [0001] The present disclosure relates to lead storage batteries. Background technique [0002] Lead-acid batteries are widely used for industrial use, consumer use, and the like because of their excellent reliability and low price. In particular, there are many demands for use in automobiles (so-called storage batteries). In recent years, as measures to improve environmental protection and fuel efficiency, the idle stop system vehicle (hereinafter referred to as "ISS vehicle") that stops the engine when it is stopped and restarts it when it starts has been accelerated, and the use of the alternator has been reduced. Development of micro-hybrid vehicles such as power generation control vehicles for power generation. [0003] Lead storage batteries mounted on ISS vehicles and micro-hybrid vehicles are mainly used in an incompletely charged state, that is, a partially charged (PSOC: Partial State Of Charge) state due to the following conditions unique to ISS v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/12H01M2/28H01M50/466H01M50/534H01M50/541
CPCH01M10/12H01M2220/20H01M4/73H01M4/667H01M4/685H01M4/661H01M4/82H01M10/08Y02E60/10H01M50/541Y02P70/50H01M50/534H01M50/466
Inventor 荒城裕司平野贵之大越哲郎
Owner HITACHI CHEM CO LTD
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