Patent attributes
A lower box body, a battery pack and a vehicle, where the battery pack includes the lower box body and a battery cell; the lower box body has an accommodating area, and the battery cell is accommodated in the accommodating area; the lower box body is further provided with an exhaust port and an exhaust channel, and the exhaust port is in communication with the exhaust channel; the exhaust port is arranged in the lower box body of corresponding accommodating area; and the lower box body further includes an exhaust assembly, the exhaust assembly is blocked at the exhaust port, and the exhaust assembly is configured to be open when pressure in the accommodating area reaches a set value, so that gas in the accommodating area enters the exhaust channel through the exhaust port.
