Battery cell, battery device, and electric device

Abstract

The application discloses a battery monomer, a battery device and a power utilization device. The battery monomer comprises a shell, an electrode assembly and an insulating piece. The electrode assembly is arranged in the shell. The insulating piece comprises a first wall arranged between the surface with the largest area of the electrode assembly and the shell. The first wall is provided with a support structure which is arranged obliquely relative to the first wall, so as to constrain the expansion of the electrode assembly and provide expansion space for the electrode assembly when the expansion force of the electrode assembly is greater than a certain threshold, thereby improving the reliability of the battery monomer.

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