Oriented-gas discharge battery module and power battery

Abstract

The invention provides an oriented-gas discharge battery module and a power battery. Cells in the battery module can be arranged to respectively have a protruding seal edge, fixed end plates and cell fixing plates in the battery module mutually cooperate to form a stitching structure for stitching the seal edges of the cells, and grooves for connecting the internal and the external of fixing chambers for fixing the cells are arranged in the battery module. The fixing chambers press the edges, and the grooves are not stitch-sealed, so gas is discharged from the unstitched grooves of the seal edges when the cells have a gas expanding phenomenon and need gas discharge. The positions of the grooves in all the fixing chambers are arranged in a unified manner to realize oriented gas discharge of the cells, so the gas discharge direction at the cell spray explosion can be controlled, and influences of random gas discharge of the cells on surrounding cells are avoided.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a battery module and a power battery capable of directional exhaust. Background technique [0002] Due to the particularity of the soft-packed battery cell, when it is unstable, explosion may occur at any position of the battery cell, and the high-temperature and high-pressure gas emitted by the explosion will cause great harm to the surrounding structure or the battery cell, and may cause damage to the structural safety And the chains of other batteries have been destabilized one after another, seriously affecting the safety of the battery pack. The traditional pouch battery module does not consider the instability and diffusion of the battery. When the cell becomes unstable, it will cause serious safety problems. Contents of the invention [0003] In view of this, the present invention provides a battery module and a power battery capable of directional exhaust, which can ...

AI Technical Summary

Problems solved by technology

[0002] Due to the particularity of the soft-packed battery cell, when it is unstable, explosion may occur at any position of the battery cell, and the high-temperature and high-pressure gas emitted by the explosion will cause great harm to the surrounding structure or the battery cell, and may cause damage to the structural safety And the chain of other batteries loses stability one after another, which seriously affects the safety of the battery pack

The traditional pouch battery module does not consider the instability and diffusion of the battery. When the cell becomes unstable, it will cause serious safety problems.

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