Battery packaging explosion-proof device for electric vehicle

Abstract

The invention discloses a battery packaging explosion-proof device for an electric vehicle, and relates to the storage battery technical field. The battery packaging explosion-proof device comprises abox cover mechanism and a box body; the box cover mechanism comprises a box cover, the box cover is provided with ventilation holes, binding posts and battery pole columns, the interior of the box cover mechanism is provided with a pneumatic valve and sliding blocks connected with a pneumatic valve; the box body is provided with a fixed layer, a buffer layer and a rigid layer from inside to outside in turn. The problem of bursting of a conventional battery pack due to too large internal gas pressure is solved by arrangement of the ventilation holes; through upward moving of the pneumatic valve, connection between the battery pole columns with the binding posts is cut off by the sliding blocks, and the problem that an electrode in a battery pack is easy to short-circuit or electric appliances in an electric vehicle are easy to burn out due to the explosion is solved; a sealing ring on the pneumatic valve isolates oxygen inside the battery pack to achieve fire prevention; by arrangementof the buffer layer and the fixed layer in the box body, the collision between the batteries is reduced; the inner surface of the fixed layer is coated with a corrosion-resistant material, so corrosion of parts after battery explosion is prevented.

Description

technical field [0001] The invention belongs to the technical field of accumulators, in particular to a battery package explosion-proof device for electric vehicles. Background technique [0002] With the popularization of new energy vehicles, the problems and disadvantages of battery packs during use have become increasingly prominent. In traditional battery packs for electric vehicles, the positive electrode of the battery is extremely easy to catch fire. , it is easy to cause the surrounding single cells to catch fire, and the fire spreads and even causes the explosion of the entire battery pack. The traditional electric vehicle battery pack has poor fire resistance and has potential safety hazards; the battery is filled with electrolyte, and the components and battery pack are easily corroded after the explosion. other batteries in the Contents of the invention [0003] The object of the present invention is to provide a battery packaging explosion-proof device for el...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a battery packaging explosion-proof device for electric vehicles, which releases the gas in the battery pack through the vent hole, and solves the problem of the existing battery pack bursting due to excessive internal pressure; by setting the pneumatic valve, The slider is used to cut off the connection between the battery pole and the terminal, which solves the problem that the electrodes in the battery pack are easily short-circuited or the electrical components inside the electric vehicle are burned due to explosion; the sealing ring on the pneumatic valve is used to seal and isolate oxygen, which solves the current problem. There is the problem of poor fire performance of the battery pack; by setting a buffer layer and a fixed layer in the box, the stability of the battery pack is ensured, and at the same time, the inner surface of the fixed layer is coated with a corrosion-resistant material to prevent corrosion of parts after the battery explodes

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