Explosion relief valve for lithium battery

A technology of lithium battery and safety valve, which is applied in the direction of battery components, circuits, electrical components, etc.

Active Publication Date: 2021-09-07
广东省华米时代新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the pressure threshold of the safety valve in the prior art is fixed, and the safety threshold of the pressure is different for lithium batteries installed on different products, so it is necessary to design an explosion-proof safety valve that can adjust the pressure threshold and have the explosion-proof Lithium battery for safety valve and safe pressure relief method

Method used

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  • Explosion relief valve for lithium battery
  • Explosion relief valve for lithium battery
  • Explosion relief valve for lithium battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0099] The gas passage 2 includes:

[0100] The air intake blind hole 21 is arranged on the lower end surface of the installation base 1;

[0101] The arc-shaped air channel 22 is arranged inside the installation base 1, and the left end of the arc-shaped air channel 22 is communicated with the upper end surface of the air intake blind hole 21;

[0102] The air outlet side hole 23 is connected to the right side of the arc-shaped air passage 22, and the air outlet side hole 23 is set through the side of the installation base 1;

[0103] The arc-shaped upper groove 24 is arranged on the upper end surface of the installation base 1 and communicates with the right rear end of the arc-shaped air passage 22, and the upper end of the arc-shaped upper groove 24 is opened;

[0104] The damping valve body 3 includes:

[0105] The sealing piston 31 is slidably arranged in the arc-shaped air passage 22, and the sealing piston 31 is sealed and connected with the inner wall of the arc-sha...

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Abstract

An explosion relief valve of a lithium battery is arranged in a cathode shell of the lithium battery and comprises a mounting base body, a gas passage and a damping valve body. The gas channel comprises a gas inlet blind hole, an arc-shaped gas channel, a gas outlet side hole and an arc-shaped upper groove. The damping valve body comprises a sealing piston, a spring check ring, an arc-shaped insertion rod and a reset compression spring. The resistance adjusting device is used for adjusting the position of the spring retainer ring and comprises a resistance adjusting base, a rotating assembly, a telescopic insertion rod and a reciprocating lock channel.

Description

technical field [0001] The present application relates to the technical field of lithium batteries, in particular to an explosion-proof safety valve for lithium batteries. Background technique [0002] Lithium batteries, as sealed rechargeable batteries with high energy density, are increasingly used as driving power sources for small portable devices such as notebook computers and mobile phones, and their demand is increasing. When the battery is affected by abnormal factors such as short circuit, high heat, overcharge, etc., high-pressure gas is likely to be generated inside the battery, which will cause deformation of the negative shell and even cause the risk of explosion. In order to make it safe to use, a safety valve must be installed in the battery. When the internal pressure of the battery container rises to an abnormal state, this cracked safety valve can quickly open and discharge the gas to provide safety protection under abnormal conditions. effect. [0003] H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/333H01M50/35
CPCH01M50/333H01M50/35Y02E60/10
Inventor 董光旭
Owner 广东省华米时代新能源科技有限公司
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