BATTERY CELL, BATTERY AND ELECTRIC DEVICE

The present application relates to a battery cell, a battery and an electric device, which belong to the technical field of battery manufacturing. The battery cell provided in the present application comprises: a shell; a cover plate; an electrode assembly, which comprises a main body and a tab extending from an end of the main body in a first direction, wherein the cover plate is located on one side of the main body in a second direction, and the first direction is perpendicular to the second direction; a first insulation member, which is arranged between the electrode assembly and the cover plate, so as to insulate and isolate the electrode assembly from the cover plate; and a second insulation member, which is arranged between the main body and an inner surface of the shell, so as to insulate and isolate the tab from the shell. The second insulation member and the first insulation member are separately arranged and connected to each other. The present application further provides a battery and an electric device, both of which comprise the battery cell; and same is convenient to assemble, and has high safety performance and energy density.