US 12,347,877 B2
Casing for battery and battery
Bo He, Xiamen (CN); Weidong Xu, Xiamen (CN); Nan Zhang, Xiamen (CN); Ziqi Yi, Xiamen (CN); and Zuyu Wu, Xiamen (CN)
Assigned to HITHIUM TECH HK LIMITED, Hong Kong (CN)
Filed by Shenzhen Hairun New Energy Technology Co., Ltd., Shenzhen (CN); and Xiamen Hithium Energy Storage Technology Co., Ltd., Xiamen (CN)
Filed on Sep. 5, 2022, as Appl. No. 17/902,998.
Claims priority of application No. 202122186504.5 (CN), filed on Sep. 10, 2021.
Prior Publication US 2023/0079390 A1, Mar. 16, 2023
Int. Cl. H01M 50/133 (2021.01); H01M 50/107 (2021.01); H01M 50/152 (2021.01)
CPC H01M 50/133 (2021.01) [H01M 50/107 (2021.01); H01M 50/152 (2021.01)] 7 Claims
OG exemplary drawing
 
1. A casing for a battery, comprising:
a body, wherein the body comprises a shell and at least one cover; at least one end of the shell is open; the cover is arranged at the one end of the shell; the shell comprises at least one first shell portion and a second shell portion which are connected to each other; the first shell portion is opposite to the cover; a thickness of the first shell portion is larger than a thickness of the second shell portion; and a groove recessed toward a central axis direction of the shell is formed in the first shell portion;
wherein a transition portion is connected between the first shell portion and the second shell portion and has a thickness gradually increasing in a direction from the second shell portion toward the first shell portion;
wherein an included angle between two surfaces of the transition portion in a thickness direction is β, wherein β satisfies: 0°<β<90°;
wherein an inner surface of the first shell portion is flush with an inner surface of the second shell portion.