Lead acid storage battery
A technology of lead-acid battery, charging and discharging state, applied in the direction of lead-acid battery, lead-acid battery electrode, battery electrode, etc., can solve the problem of thinning of the ear part, achieve the effect of suppressing thinning and excellent cycle life performance
Active Publication Date: 2014-06-18
GS YUASA INT LTD
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Problems solved by technology
[0022] In order to solve the above-mentioned problems, in-depth studies have been carried out. As a result, the following insights have been obtained, which are completely unpredictable from the prior art. Suppressive effect of carbon addition on ear thinning
Method used
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[0158] (1) In the above-mentioned embodiments, a negative electrode grid obtained by expanding a rolled sheet was used, but a negative electrode grid obtained by punching a rolled sheet may also be used.
[0159] (2) When the lead-tin alloy layer is provided on the negative electrode tab portion and the tab portion forming edge, the lead-tin alloy layer may also be formed on the grid portion. In such a case, the invention of the present application also works effectively.
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Abstract
A lead acid storage battery according to the present invention uses a positive electrode grid body made of a lead-calcium-tin based alloy, and a negative electrode grid body made of either a lead-calcium based alloy or a lead-calcium-tin based alloy. The present invention is featured in that, among a strap provided by integrally welding negative electrode lug sections with each other, an inter-cell connecting section, and an electrode pole, at least the strap is made of a lead-antimony based alloy. Further, the present invention is featured in that a lead-tin alloy layer is provided on the negative electrode lug section, and in that carbon is contained in a negative electrode active material in an amount corresponding to 0.25 to 0.75% of the mass of the negative electrode active material after the full charging of the lead acid storage battery.
Description
technical field [0001] The invention relates to a lead storage battery. Background technique [0002] Conventionally, lead storage batteries have often been used in a fully charged state. In the case of using a lead-acid battery in a fully charged state, there are problems that arise when overcharging is reached, that is, there is corrosion of the grid of the positive electrode; or exposure of the bus bar or tab due to the reduction of the electrolyte, resulting in a negative bus bar Corrosion problems near the welding interface with tabs, etc. [0003] However, in recent years, given the CO 2 In various industrial fields, efforts are being made to improve energy efficiency due to the climate change problem caused by the rapid increase in emissions, and the severe energy situation including the soaring price of crude oil. In the automobile industry, the development of hybrid electric vehicles, clean diesel locomotives, plug-in hybrid electric vehicles, and idle-stop vehic...
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IPC IPC(8): H01M10/06B60L11/18H01M2/28H01M2/30H01M4/14H01M4/62H01M4/68H01M4/73H01M50/541
CPCH01M4/04H01M4/20H01M4/625Y02E60/126H01M4/745H01M4/73Y02T10/7016H01M4/685H01M2/28H01M4/16H01M10/128Y02E60/10H01M50/541Y02P70/50
Inventor 坪井裕一铃木基行秦公树大角重治
Owner GS YUASA INT LTD
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