Explosion-proof valve, battery with explosion-proof valve and electric equipment with explosion-proof valve

The invention relates to the technical field of batteries, and provides an explosion-proof valve, a battery with the explosion-proof valve, and electric equipment with the explosion-proof valve. The anti-explosion valve comprises a fixing piece. And the negative thermal expansion piece is connected with the fixing piece, can open the exhaust channel when the internal temperature of the battery is increased, and can close the exhaust channel when the internal temperature of the battery is reduced. By the adoption of the explosion-proof valve, repeated exhaust and cycle work can be achieved, and the service life of a battery is greatly prolonged. 本申请涉及电池技术领域，提供了一种防爆阀及具有其的电池、用电设备。该防爆阀包括固定件；与所述固定件相连接的负热膨胀件，所述负热膨胀件可在电池的内部温度升高时开启排气通道，以及在所述电池的内部温度降低时关闭所述排气通道。采用本申请的防爆阀，能够重复排气，循环工作，大幅延长了电池的使用寿命。