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Secondary explosion-proof device of storage battery

An explosion-proof device and battery technology, which is applied in battery pack components, circuits, electrical components, etc., can solve the problems of battery scrap and high battery cost

Inactive Publication Date: 2014-12-31
XIANGYANG ZHENGXIN AVIATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high cost of large-capacity batteries, if the explosion-proof device is activated due to the gas generated inside the battery, although it is safe, because it is disposable, the battery will be scrapped

Method used

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  • Secondary explosion-proof device of storage battery

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Effect test

Embodiment Construction

[0009] like figure 1 As shown, an explosion-proof valve is provided between the positive and negative conductive posts on the battery cover 2, the explosion-proof valve includes a valve body 6 and an explosion-proof cover 1, the valve body 6 is fixed on the battery cover 2, and is connected to the battery cover 2 Constitute a whole, on the valve body 6 there is a middle hole communicating with the inside of the battery, the valve body 6 is made of polytetrafluoroethylene material and the battery cover 2 is injection molded together; For the cover of the hole, the explosion-proof cover 1 is connected to the valve body 6 through an internal thread, and a compression spring 3, a pressing piece 4 and a sealing gasket 5 are arranged between the explosion-proof cover 1 and the valve body 6. The compression spring 3 adopts a pagoda-shaped spring, and one end Pressed on the pressing piece 4, connected with the valve body 6 through the pressing piece 4 and the sealing gasket 5, the oth...

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Abstract

The invention discloses a secondary explosion-proof device of a storage battery, relates to a safety protection device of the storage battery, in particular to an explosion-proof exhaust device of the storage device, and mainly solves the known problems that the battery is blown up or even explodes due to temperature generated in the use or charge-discharge processes of the storage battery and the storage battery with the capacity larger than 50Ah is scrapped once the explosion-proof device arranged on the storage battery is started due to the fact that the explosion-proof device is disposable. The secondary explosion-proof device is characterized in that a valve body is fixed on a battery cover plate, a middle hole communicated with the interior of the battery is arranged on the valve body, and an explosion-proof cover is connected onto the valve body; a sealing gasket, a press plate and a spring are arranged between the explosion-proof cover and the valve body; and a through hole is formed in the explosion-proof cover in the axial direction. An explosion-proof valve is arranged on the storage cover plate, the middle hole formed in the valve body is opened to discharge air in the battery when pressure in the battery is larger than the set value and is sealed when pressure in the battery is smaller than the set value, and therefore scrapping of the battery due to explosion caused by too much pressure in the battery is avoided.

Description

technical field [0001] The invention relates to a safety protection device for storage batteries, in particular to an explosion-proof exhaust device for storage batteries. Background technique [0002] The current battery will generate a certain temperature more or less when charging, discharging or functioning, and it is impossible to ensure that the moisture in the battery cell is completely cleaned during the battery production process, so it will cause the electrolyte to decompose and produce gas Slightly, it will cause the internal resistance of the battery to increase, and the battery will bulge, and if it is serious, it will cause the battery to explode, resulting in a safety accident. Batteries with a capacity of more than 50Ah on the market are basically equipped with explosion-proof devices, but they are all disposable. Because the cost of the storage battery of large capacity is very high, if the battery causes the explosion-proof device to start because of the g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/12
CPCH01M50/325H01M50/333Y02E60/10
Inventor 吴惠文刘衍红徐兆斌
Owner XIANGYANG ZHENGXIN AVIATION TECH
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