Anti-explosion balance valve applied to battery cell module

Abstract

The invention discloses an anti-explosion balance valve applied to a battery cell module. The anti-explosion balance valve comprises a valve body and a protection cover. One end of the valve body is connected with the protection cover. A ventilated assembly unit is arranged between the protection cover and the valve body. A sealing ring is sleeved on the other end of the valve body. The interior of the valve body is equipped with a first air channel communicated with the valve body. A flexible sealing assembly is arranged in the first air channel. One end of the flexible sealing assembly is in contact type sealing connection with one end of the first air channel. The other end of the flexible sealing assembly is in contact type connection with the ventilated assembly unit. A second air channel is arranged between the ventilated assembly unit and the protection cover. A third air channel is arranged between the protection cover and the valve body. The first air channel is communicated with the second air channel. The second air channel is communicated with the third air channel. The anti-explosion balance valve applied to the battery cell module provided by the invention has the advantages that a structure is simple, the cost is low, the operation is simple and convenient, an electrolyte permeation function in a battery cell is obstructed, and the interior of a product is ventilated with the outside world.

Description

technical field [0001] The invention relates to an explosion-proof balance valve, in particular to an explosion-proof balance valve applied to a cell module. Background technique [0002] In the current development stage of new energy vehicles, the core component inside is the battery pack. There are N battery modules in the battery pack, and the battery components are inside the module. Since the battery components are safety-critical components , under working conditions, the electrolyte inside the cell will accumulate a certain amount of chemical energy over time, which will cause the internal pressure to rise. After reaching the set limit value, it will act on the explosion-proof plate on the cell shell, The internal pressure of the battery is directly connected to the inside of the battery module, but because the current battery module shell is designed as a sealed shell, the air pressure cannot be discharged from the inside of the module after the abnormal pressure lim...

AI Technical Summary

Problems solved by technology

[0002] In the current development stage of new energy vehicles, the core component inside is the battery pack. There are N battery modules in the battery pack, and the battery components are inside the module. Since the battery components are safety-critical components , under working conditions, the electrolyte inside the cell will accumulate a certain amount of chemical energy over time, which will cause the internal pressure to rise. After reaching the set limit value, it will act on the explosion-proof plate on the cell shell, The internal pressure of the battery is directly connected to the inside of the battery module, but because the current battery module shell is designed as a sealed shell, the air pressure cannot be discharged from the inside of the module after the abnormal pressure limit value of the solid battery, which is easy Leading to a decrease in the service life of key components of the internal battery and damage to electronic devices

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