Battery cell housing

Abstract

A battery cell housing, wherein the battery cell housing comprises:a housing (100), wherein one end of the housing (100) is provided with an opening;a cover plate (200), wherein a rim of the cover plate (200) is disposed in a groove at the opening of the housing (100); anda sealing ring (300); characterized in that the cover plate (200) includes a fixing portion (210), a first protruding portion (220) and a recessed portion (230), and the lower surface of the fixing portion (210) is provided with an annular groove (2101), wherein the recessed portion (230), the first protruding portion (220) and the fixing portion (210) are arranged one after the other in a direction away from the axis of the cover plate (200) and are arranged concentrically with respect to the axis of the cover plate (200), the first protruding portion (220) protrudes from the upper surface of the cover plate (200), and the recessed portion (230) is recessed in the upper surface of the cover plate (200);andthe sealing ring (300) is arranged between the housing (100) and the fixing part (210), the sealing ring (300) has an annular protrusion (310) fitting said groove (2101), and the annular protrusion (310) is inserted into the annular groove (2101), wherein the annular groove (2101) and the annular protrusion (310) are formed around the axis of the cover plate (200); andwherein the surface of the cover plate (200) facing the outside of the battery housing constitutes the upper surface of the cover plate (200) and the surface of the cover plate (200) facing the inside of the battery housing constitutes the lower surface of the cover plate (200).;