Metal -air cell's disappointing device of leak protection

The utility model relates to a battery equipment technical field, in particular to metal -air cell's disappointing device of leak protection, including lid and liquid container connecting piece, the lid is connected with the liquid container connecting piece, the lid top is provided with the ventilative through -hole of third, the lid inboard is connected with the spring, the one end that the lid was kept away from to the spring is connected with the piston of the conical surface, be equipped with the second bleeder vent on the piston, the piston downside is provided with spherical surface protrusive spare, spherical surface protrusive spare includes spherical surface protrusive subtotal horizontally connect part, horizontally connect part is provided with first ventilative through -hole, generates gas and lose one's temper the voltage rise when high when liquid container in, and this gas of discharge that can be in good time prevents that the battery box from because of the too high spalling of atmospheric p