US 12,463,277 B2
Battery pack
Kaijie You, Fujian (CN); Xingdi Chen, Fujian (CN); Yanhuo Xiang, Fujian (CN); Fenggang Zhao, Fujian (CN); Linggang Zhou, Fujian (CN); and Peng Wang, Fujian (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed on Jun. 24, 2021, as Appl. No. 17/356,653.
Application 17/356,653 is a continuation of application No. PCT/CN2019/079502, filed on Mar. 25, 2019.
Claims priority of application No. 201822237714.0 (CN), filed on Dec. 28, 2018.
Prior Publication US 2021/0320359 A1, Oct. 14, 2021
Int. Cl. H01M 50/209 (2021.01); H01M 50/148 (2021.01); H01M 50/204 (2021.01); H01M 50/211 (2021.01); H01M 50/271 (2021.01); H01M 50/543 (2021.01)
CPC H01M 50/209 (2021.01) [H01M 50/204 (2021.01); H01M 50/211 (2021.01); H01M 50/271 (2021.01); H01M 50/543 (2021.01); H01M 50/148 (2021.01); H01M 2220/20 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A battery pack, comprising a first battery module, a second battery module and a box body, wherein the first battery module and the second battery module are housed in the box body;
wherein the box body comprises a lower box body configured to support the first battery module and the second battery module, and an upper box body fitting with the lower box body, wherein the upper box body is a recess structure with an opening facing downwards towards the lower box body, and the lower box body is a recess structure with an opening facing upwards towards the upper box body; the opening of the upper box body engages with the opening of the lower box body;
a bottom wall of the lower box body comprises a first connecting portion, the first connecting portion is located between the first battery module and the second battery module, a bottom wall of the upper box body comprises a second connecting portion, and the first connecting portion and the second connecting portion are fixed and connected;
wherein the first connecting portion of the lower box body has a first protrusion portion protruding upward along a height direction, and the first protrusion portion of the first connecting portion is fixed and connected to the second connecting portion of the upper box body; and,
wherein the second connecting portion of the upper box body has a second protrusion portion protruding downward along the height direction, the second protrusion portion, the second connecting portion, and the upper box body are an integral structure, and the first protrusion portion of the first connecting portion is fixed and connected to the second protrusion portion of the second connecting portion;
the battery pack further comprises:
a first fastening member, the first protrusion portion of the first connecting portion and the second protrusion portion of the second connecting portion are fixed and connected by the first fastening member along the height direction.