Explosion-proof valve and battery

The utility model relates to the technical field of anti-explosion valves, and discloses an anti-explosion valve and a battery, the anti-explosion valve comprises a valve seat, an upper cover, an elastic piece and at least one blade; at least one exhaust hole is formed in the valve seat; the upper cover is fixedly connected with the valve seat, the upper cover and the valve seat jointly define a containing space, the blade is contained in the containing space, and the elastic piece is limited in the containing space, located between the blade and the upper cover and in a compressed state. The upper cover is provided with at least one air outlet, the blade is rotationally connected with the valve seat, and when the blade rotates relative to the valve seat, the blade has a closing position used for covering the exhaust hole and an opening position used for opening the exhaust hole; and the elastic piece applies acting force to the blade, so that the blade has a movement trend of automatically switching from the