Lead acid storage battery
A lead-acid battery and negative electrode technology, which is applied in the direction of lead-acid battery, lead-acid battery electrode, secondary battery, etc., can solve the problem of thinning of the ear part, and achieve the effect of suppressing thinning and excellent cycle life performance
Active Publication Date: 2011-08-17
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
The invention provides a lead acid storage battery using a positive electrode grid composed of a lead-calcium-tin alloy and a negative electrode grid composed of a lead-calcium alloy or a lead-calcium-tin alloy. The lead acid storage battery is characterized in that among a strap welded and integrated to a negative electrode ear part, an inter-cell connection part and an electrode column, at least the strap is composed of a lead-antimony alloy. The lead acid storage battery is also characterized in that the negative electrode ear part is provided with a lead-tin alloy layer and the negative electrode active material contains carbon in an amount equivalent to 0.25-0.75% of the mass of the negative electrode active material after full charging.
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...
Claims
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IPC IPC(8): H01M10/06B60L11/18H01M2/28H01M2/30H01M4/14H01M4/62H01M4/68H01M4/73H01M50/541
CPCH01M4/20H01M4/73H01M4/745H01M4/685H01M4/625H01M10/128Y02T10/7016H01M4/16Y02E60/126H01M2/28H01M4/04Y02E60/10H01M50/541Y02P70/50
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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