BOX, BATTERY AND ELECTRICAL DEVICE

A box body (10), a battery (100), an electric apparatus and a manufacturing method of the battery (100), belonging to the field of energy storage devices. The box body (10) includes a cooling device (11) and a plurality of walls (12), where the plurality of walls (12) enclose an accommodating space (13) for accommodating a battery cell (30), an interior of at least one wall (12) is provided with a first flow channel (14), and the first flow channel (14) is used for discharging emissions generated by thermal runaway of the battery cell (30) out of the box body (10). The cooling device (11) is arranged in the first flow channel (14) and used for cooling the emissions flowing through the cooling device (11). The cooling device (11) includes a cooling structure (111) used for increasing a contact area between the emissions and the cooling device (11). Due to the arrangement of the cooling structure (111), the contact area between the emissions and the cooling device (11) is increased, so that the cooling device (11) can take away more heat of the emissions, and the cooling capacity of the cooling device (11) is improved. The cooling effect of the cooling device (11) becomes better, the possibility of firing and burning of the emissions is reduced, and the safety of the battery (100) is improved.