Abstract: Embodiments of the present application provide a battery cell, a battery, and a power consumption device. The battery cell includes a housing; a cover plate, including a cover plate body part and a first edge part, where the housing and the first edge part are connected in a sealing manner and form a crimping structure turned outwards; and a reinforcing member, disposed on a side of the cover plate body part away from an inner portion of the battery cell, at least part of the reinforcing member being located between an inner side of the crimping structure and the cover plate body part.

Abstract: A device and method for manufacturing a battery cell. The device includes: a roller moving mechanism, configured to control a first roller to move in a direction of a central axis of a battery cell, where the battery cell includes a case and a cover plate, the case and the cover plate being hermetically connected and forming a rolled edge structure that is turned outwards; and the first roller, configured to squeeze, when the roller moving mechanism controls the first roller to move in the direction of the central axis of the battery cell, the rolled edge structure by a first processing surface, to cause the rolled edge structure to be inclined in a direction close to the central axis of the battery cell.

Abstract: The present application provides a necking method, a necking apparatus, and a battery manufacturing device. The necking method is used for forming a necked portion on a shell with an open end. The necking method includes: forming an annular groove on the shell, where the annular groove extends in a circumferential direction of the shell; and expanding a width of the annular groove towards the open end to form the necked portion. The technical solution of the present application can effectively reduce deformation of the shell, ensure safety of an electrode assembly, and improve performance stability of a battery cell. Meanwhile, pre-necking the shell effectively reduce a risk of deformation resilience of the shell after the necked portion is formed, thereby improving machining precision and structural stability of the necked portion.

Abstract: A necking and flanging apparatus includes: an inner mold; a necking piece, disposed around the inner mold, where the necking piece is movable along a radial direction of the inner mold, and the necking piece is configured to coordinate with the inner mold to form a necked portion on a housing; and a press-fit piece, disposed around the inner mold, where the press-fit piece is movable along an axial direction of the inner mold, and the press-fit piece is configured to fit the necking piece to press and flatten the flanged portion of the housing.

Abstract: A device for producing a battery cell includes: an upsetting mechanism and a moving mechanism. The moving mechanism is configured to: control the upsetting mechanism to move towards the battery cell along a direction of a central axis of the battery cell. The battery cell includes a housing and a cover plate. The housing and the cover plate are connected in a sealing manner and formed with a crimping structure turned outwards. A surface of the upsetting mechanism facing the crimping structure is provided with at least one protruding structure, and the protruding structure is configured to press the crimping structure towards the direction of the central axis of the battery cell when the moving mechanism controls the upsetting mechanism to move towards the battery cell, so that the crimping structure is inclined towards a direction close to the central axis of the battery cell.