Lithium battery capable of preventing short circuit

一种锂电池、铝带的技术，应用在锂蓄电池、电池组零部件、非水电解质蓄电池等方向，能够解决热失控、安全事故、不能完全杜绝电池危险等问题，达到提高安全性、保障安全、降低材料成本以及售后风险成本的效果

Inactive Publication Date: 2015-03-25
BAISHUN SONGTAO (TIANJIN) POWER BATTERY TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the cell capacity of the battery increases and the energy density increases, it often reaches a higher temperature before the protection mechanism fails to operate, causing thermal runaway and serious safety accidents
Therefore, the method of additives alone cannot completely eliminate the danger caused by the short circuit of the battery at this stage.

Method used

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Examples

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Effect test

Embodiment Construction

[0017] In order to further illustrate the present invention, the present invention will be further elaborated below in conjunction with the accompanying drawings.

[0018] With the same material, process and the same environmental conditions, a batch of batteries (hereinafter referred to as conventional, the present invention) were respectively made using the conventional positive tab connection method in the prior art and the connection method in the present invention. , each randomly selected 10 test batteries for testing, numbered 1-20.

[0019] Such as figure 2 As shown, the connection method in the present invention is: the positive electrode sheet 1 and the positive electrode terminal 2 are connected by an aluminum strip 5 , and the aluminum strip is provided with a hole structure 4 . The length of the hole structure 4 in the width direction of the aluminum strip 5 is one third of the width of the aluminum strip 5 . And the hole structure 4 is located at the center of...

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PUM

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Abstract

The invention provides a lithium battery capable of preventing short circuit. The lithium battery comprises a positive plate and a positive terminal, wherein the positive plate is connected with the positive terminal through an aluminum band, and the aluminum band is provided with a hole structure. By utilizing the positive connection way, the safety of the lithium battery under the short-circuit situation can be greatly improved. On the premise of guaranteeing the application safety of a battery user, the material cost and after-sale risk cost of the enterprise also can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a lithium battery capable of preventing short circuit. Background technique [0002] In the production and use of lithium batteries, if a short circuit occurs in the lithium battery, it will generate a large amount of heat in a short period of time due to the instantaneous high current discharge, which will cause the battery to catch fire and even explode in severe cases. In the current production, in order to prevent the lithium battery itself from causing safety accidents due to short circuit, the main protective measure is to add an additive during the battery manufacturing process. The additive can generate gas when the temperature reaches a certain value, make the inside of the battery reach a certain pressure, touch the protection device of the battery cover, cut off the connection between the battery and the external circuit, and open the battery to achieve the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/34H01M50/588
CPCH01M10/052H01M50/502H01M50/572Y02E60/10
Inventor 韩卫东
Owner BAISHUN SONGTAO (TIANJIN) POWER BATTERY TECH DEV CO LTD
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