Explosion -proof sealing plug of battery

The utility model discloses an explosion -proof sealing plug of battery, it is including circle annular apron (1), turn -ups (2) and with the apron (1) endocentric sleeve (3), sleeve (3) are fixed at the hole of apron (1) and sleeve (3) upper and lower both ends all saliently in lapping (1), the upper surface of apron (1) is equipped with three explosion -proof ditches of arc (4), article three, the explosion -proof ditch of arc (4) all are located one and apron (1) endocentric circumference, the radius of this circumference equals the half the of apron (1) ring width, water absorbent resin packing ring (5) have been registrated in sleeve (3) down protruding partial clearance in apron (1), sleeve (3) down protruding part in apron (1) still the tight fit have the insulating tension sleeve (6) of silica gel, silica gel insulating tension sleeve (6) compress tightly the lower surface at apron (1) with water absorbent resin packing ring (5). This sealing plug can prevent that electrolyte solution flows after the