Battery pack and its batteries

Abstract

A battery characterized in that it comprises: a housing body having a first opening, wherein the housing body comprises an end surface and a circumferential surface surrounding and integrally connected to the end surface, wherein the first opening and the end surface are located at opposite ends of the housing body, wherein the housing body comprises a first surface, the first surface being either the end surface or the circumferential surface; a cover body covering and closing the first opening; cell poles fixedly arranged on the first surface; wherein a dimension of the cell poles in a direction perpendicular to the first surface is h, where h is specified in mm, wherein a yield strength of the housing body is w, where w is specified in MPa, wherein a wall thickness of the housing body on the first surface is d, where d is specified in mm, wherein: 0.013 MPa⁻¹ ≤ h / (w*d) ≤ 0.056 MPa⁻¹.