Long-life lead acid secondary battery

A lead-acid battery, long-life technology, applied in the direction of lead-acid battery, lead-acid battery electrode, lead-acid battery construction, etc., can solve the uneven distribution of electrode current, affect the service life of lead-acid battery, affect the battery charge and discharge cycle life To achieve the effect of prolonging the cycle life of charge and discharge, improving the problem of negative electrode vulcanization, and reducing the failure of negative electrode vulcanization

Inactive Publication Date: 2017-08-18
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Since its birth, lead-acid batteries have been widely developed due to their high cost performance, high safety and reliability, and recyclability, and have been better applied in the field of energy storage; however, lead-acid batteries are used in energy storage systems application, there is a problem of negative electrode vulcanization, which affects the service life of lead-acid batteries
[0003] In order to solve the problem of sulfuration of the negative electrode of lead-acid energy storage batteries, some inventors have developed lead-carbon batteries, adding special carbon materials to the negative electrode to alleviate the problem of sulfuration of the negative electrode in a partially charged state, but in order to avoid Adding too much carbon material to the negative electrode will increase the amount of hydrogen evolution in the negative electrode. Generally, a very small amount of carbon material is allowed to be added in the negative electrode active material, which leads to slowing down the sulfuration of the negative electrode in a partially charged state by adding a special carbon material to the negative electrode. Question doesn't work well
[0004] On the other hand, the positive and negative terminals of the current lead-acid battery are usually arranged in the same-side output mode, that is, the positive and negative terminals of the lead-acid battery and the positive and negative tabs are located on the same side of the lead-acid battery, so that the electrodes The current distribution is uneven, which also leads to the occurrence of negative electrode sulfuration
Due to the above reasons, the negative electrode of traditional lead-acid energy storage battery and lead-carbon energy storage battery is still prone to vulcanization failure, which affects the charge-discharge cycle life of the battery

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0033] Example 1, such as figure 1 , figure 2 , image 3 As shown, a long-life lead-acid battery includes a battery casing and an electrode group 1 located in the battery casing. The battery case is made of plastic. The pole group includes a number of positive plates 3 and a number of negative plates 2 , and the number of positive plates and the number of negative plates in the pole group are alternately arranged through separators.

[0034] The positive tab 3.1 of the positive plate is located on the same side of the lead-acid battery. The negative tab 2.1 of the negative plate is located on the same side of the lead-acid battery. The positive tab of the positive plate and the negative tab of the negative plate are located on opposite sides of the lead-acid battery. The positive tabs of the positive plate are connected through the positive bus bar. The positive busbar is designed with a large cross-sectional area. The negative tabs of the negative plate are connected ...

Embodiment 2

[0039] Embodiment 2, the remaining structure of this embodiment is with reference to embodiment 1, and its difference is:

[0040] like Image 6 As shown, the inner core of the grid includes a number of criss-cross inner transverse ribs and inner longitudinal ribs. The transverse rib is composed of the inner transverse rib and the lead or lead alloy cladding layer covering the surface of the inner transverse rib. The longitudinal rib is composed of the inner longitudinal rib and the lead or lead alloy cladding layer covering the surface of the inner longitudinal rib.

[0041] The lead or lead alloy cladding layer adopts the method of cold extrusion to extrude and coat the solid lead or lead alloy on the surface of the inner transverse rib and the inner longitudinal rib. The thickness of the lead or lead alloy cladding layer is 0.001-1.0mm. The horizontal ribs and the longitudinal ribs are braided to make the negative electrode grid.

[0042] The negative plate also include...

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Abstract

The invention discloses a long-life lead acid secondary battery and intends to provide a long-life lead-acid battery which can effectively improve the problem of negative electrode vulcanization and reduce the occurrence of the negative electrode vulcanization failure, so as to effectively prolong the charging and discharging cycle life of the lead acid secondary battery. The long-life lead acid secondary battery comprises an electrode group, which comprises a plurality of positive and negative plates. The negative plates comprises a negative grid, which comprises a grid inner core made of highly conductive metal and a lead or lead alloy cladding layer cladding the surface of the grid inner core.

Description

technical field [0001] The invention relates to a battery, in particular to a long-life lead-acid storage battery. Background technique [0002] Since its birth, lead-acid batteries have been widely developed due to their high cost performance, high safety and reliability, and recyclability, and have been better applied in the field of energy storage; however, lead-acid batteries are used in energy storage systems application, there is a problem of negative electrode vulcanization, which affects the service life of lead-acid batteries. [0003] In order to solve the problem of sulfuration of the negative electrode of lead-acid energy storage batteries, some inventors have developed lead-carbon batteries, adding special carbon materials to the negative electrode to alleviate the problem of sulfuration of the negative electrode in a partially charged state, but in order to avoid Adding too much carbon material to the negative electrode will increase the amount of hydrogen evo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/72H01M4/73H01M4/14H01M2/28H01M10/14H01M50/541
CPCH01M4/14H01M4/72H01M4/73H01M10/14H01M50/541Y02E60/10Y02P70/50
Inventor 刘孝伟章晖
Owner CHAOWEI POWER CO LTD
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