BATTERY CELL AND MANUFACTURING METHOD AND MANUFACTURING SYSTEM THEREOF, BATTERY AND POWER CONSUMPTION APPARATUS

The present application provides a battery cell and a manufacturing method and manufacturing system, a battery, and a power consumption apparatus. The battery cell includes an electrode assembly, a housing, a pressure relief mechanism and a cover assembly. The housing is provided with an accommodating space for accommodating the electrode assembly, and the housing includes a first side plate located on a side in a first direction; the pressure relief mechanism is disposed on the first side plate; and the cover assembly is configured for sealing the housing, where an inner surface of the first side plate of the housing is provided with a first flow channel extending along the inner surface, and the first flow channel is configured to guide a gas in the accommodating space to the pressure relief mechanism so that the pressure relief mechanism is actuated when a pressure reaches a threshold, and relieve the pressure.