Cap structure based on sawtooth current cut-off structure and battery

The utility model provides a cap structure based on a sawtooth current cut-off structure and a battery. The cap structure based on the sawtooth current cut-off structure comprises the current cut-off structure and the anti-explosion valve which are connected, the current cut-off structure comprises a current cut-off piece and a sawtooth edge connected to the outer periphery of the current cut-off piece, and the current cut-off piece is fixedly connected to one side of the anti-explosion valve; the cap structure further comprises an insulating ring, and the insulating ring is connected to the outer periphery of the sawtooth edge. A deformation buffer area is formed on the portion, connected to the insulation ring, of the sawtooth edge, and at least two first pressure relief holes are formed in the deformation buffer area. When the cap structure is subjected to transverse pressure, the current cut-off structure buffers deformation of the deformation buffer area through the insulating ring, air pressure in the b