BATTERY CELL, BATTERY AND POWER-CONSUMING DEVICE

The embodiments of this application provide a battery cell, a battery, a power consumption device, and a battery manufacturing method and device, which pertains to the technical field of batteries. The battery cell includes a housing, an electrode assembly, and an end cover assembly. The electrode assembly is configured to be accommodated in the housing, and the electrode assembly includes a main body portion and a tab. The end cover assembly includes an end cover and an electrode terminal, where the end cover is configured to cover the opening, the electrode terminal is mounted on the end cover, and the electrode terminal is configured to be electrically connected to the tab. The end cover includes a first body and a first protruding portion, the first body has a first inner surface and a first outer surface arranged opposite to each other in a thickness direction of the first body, the first protruding portion protrudes from the first outer surface in a direction departing from the main body portion, a first recessed portion recessed from the first inner surface in the direction departing from the main body portion is formed at a position corresponding to the first protruding portion on the first body, and the first recessed portion is configured to accommodate at least a part of the tab, so as to make more space for the main body portion, which is beneficial to increase an energy density of the battery cell.