Battery cell, battery device, and electric device

Abstract

The application discloses a battery monomer, a battery device and an electric equipment. The battery monomer comprises an electrode assembly, a shell, an electrode terminal and an insulating piece. The electrode assembly is accommodated in the shell. The shell comprises a first wall. The electrode terminal is arranged on the first wall. The insulating piece comprises a laminated insulating layer and an adhesive layer and is attached to the outside of the shell. The insulating piece comprises a main body part and a protruding part. The main body part extends along the edge of the first wall and surrounds the electrode terminal. The protruding part protrudes towards the electrode terminal relative to the main body part. The insulating piece is provided with a glue-removing area. The glue-removing area is provided with the insulating layer and is arranged staggered with the adhesive layer. The glue-removing area is at least partially located in the protruding part and is arranged close to the side end of the protruding part away from the main body part. The battery monomer provided by the application can improve the reliability.

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