Explosion-proof valve for lithium battery

The utility model provides an anti-exploding valve of a lithium battery, which comprises an anti-exploding valve chassis, an anti-exploding film and an anti-exploding valve bonnet which are fixed on the anti-exploding valve chassis, wherein the top portion of the anti-exploding valve bonnet is provided with a slot, an anti-exploding needle is inserted and fixed in the slot, and the tip of the anti-exploding needle points to the anti-exploding film. The anti-exploding valve of a lithium battery adopts the combination of the anti-exploding film and the anti-exploding needle, and the anti-exploding film is more easily lanced by the anti-exploding needle when the internal pressure of a battery rises to decompression starting pressure, the set value of starting pressure is greatly lowered, and the security and the reliability of the battery are guaranteed, and meanwhile, the distance between the anti-exploding needle and the anti-exploding film can be adjusted according to different anti-exploding starting pressur