Anti-explosion device for lithium battery pack

Abstract

The invention discloses an anti-explosion device for a lithium battery pack; after the lithium battery pack is wrapped with an insulating layer before it is placed in the anti-explosion device; the anti-explosion device comprises a metal box in which the lithium battery pack is placed, and metal anti-explosion plates mounted at two ends of the metal box; the inner wall of the metal box is provided with a plurality of screw grooves, the edge of each metal anti-explosion plate is provided with lock strips fitting the screw grooves, the lock strips are inserted into the screw grooves so that after being inserted into the metal box, the metal ant-explosion plates are fixed in the screw grooves via screws, and the screws limit and immobilize the metal anti-explosion plates to prevent them from dropping; the metal anti-explosion plates are provided with gaps; the anti-explosion device also comprises a plastic cover that covers outside the metal ant-explosion plates in bonded manner and that covers the connections of the metal box with the metal anti-explosion plates; the plastic cover is provided with second wire holes corresponding to the gaps; the metal box is of integrated structure.

Description

technical field [0001] The invention relates to an explosion-proof device, in particular to an explosion-proof device for a lithium battery pack. Background technique [0002] Lithium battery packs made of ternary materials may explode, and in order to improve safety performance, the existing lithium battery packs are generally equipped with a plastic box structure to prevent the lithium battery pack from exploding and hurting people. The plastic box structure generally includes a plastic box body 1. Cover the top cover on the upper end of the plastic box body. Although this structure has low cost, it has poor safety performance. Once the lithium battery pack explodes, it will generate a lot of heat and high-temperature gas, and solid fragments will fly out. , while the plastic box structure is made of plastic, and the plastic will burn when exposed to high heat and explosion, the explosion-proof effect is poor, and the safety performance is average. [0003] Therefore, h...

AI Technical Summary

Problems solved by technology

[0002] Lithium battery packs made of ternary materials may explode, and in order to improve safety performance, the existing lithium battery packs are generally equipped with a plastic box structure to prevent the lithium battery pack from exploding and hurting people. The plastic box structure generally includes a plastic box body 1. Cover the top cover on the upper end of the plastic box body. Although this structure has low cost, it has poor safety performance. Once the lithium battery pack explodes, it will generate a lot of heat and high-temperature gas, and solid fragments will fly out. , while the structure of the plastic box is made of plastic, the plastic will burn when exposed to high heat and explosion, the explosion-proof effect is poor, and the safety performance is average

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