US 11,705,575 B2
Battery module, battery pack, and vehicle
Haizu Jin, Zhangwan Town (CN); Linggang Zhou, Zhangwan Town (CN); Dongyang Shi, Zhangwan Town (CN); Peng Wang, Zhangwan Town (CN); Yongshou Lin, Zhangwan Town (CN); and Yanhuo Xiang, Zhangwan Town (CN)
Assigned to Contemporaty Amperex Technlogy Co., Limited, Ningde (CN)
Filed by Contemporary Amperex Technlogy Co., Limited, Fujian (CN)
Filed on Aug. 1, 2019, as Appl. No. 16/528,888.
Claims priority of application No. 201811649795.3 (CN), filed on Dec. 30, 2018.
Prior Publication US 2020/0212386 A1, Jul. 2, 2020
Int. Cl. H01M 10/04 (2006.01); H01M 10/48 (2006.01); H01M 10/44 (2006.01); H01M 10/42 (2006.01); H01M 50/55 (2021.01); H01M 50/264 (2021.01); H01M 50/209 (2021.01)
CPC H01M 10/0413 (2013.01) [H01M 10/425 (2013.01); H01M 10/441 (2013.01); H01M 10/482 (2013.01); H01M 50/209 (2021.01); H01M 50/264 (2021.01); H01M 50/55 (2021.01)] 10 Claims
OG exemplary drawing
 
1. A battery module, comprising:
a plurality of bus bars;
a plurality of battery cells arranged in a horizontal direction and electrically connected to each other by the plurality of bus bars,
each of the plurality of battery cells comprising:
a battery case comprising two first surfaces and two second surfaces, an area of each of the first surfaces is larger than an area of each of the second surfaces, the two second surfaces of each of the battery cells face each other in the horizontal direction, and the two first surfaces of each of the battery cells face each other in a vertical direction, and
a plurality of electrode assemblies accommodated in the battery case and stacked in the vertical direction, each electrode assembly comprising a first electrode sheet, a second electrode sheet, and a separator disposed between the first and second electrode sheets and having a flat wound structure or a laminated structure, in which the first and second electrode sheets and the separator are stacked in the vertical direction;
two end plates respectively disposed at two ends of the plurality of battery cells in the horizontal direction, each of the two end plates comprising a first protruding portion that protrudes vertically from an upper surface of the plurality of battery cells;
two tying bands surrounding an outer periphery of the plurality of battery cells and the two end plates, wherein each of the two tying bands comprises a first end portion, a second end portion, two long sides, and two short sides, wherein the two long sides face the two first surfaces and extend in the horizontal direction, and the two short sides face the two second surfaces and extend in the vertical direction, wherein the first end portion and the second end portion are stacked in one of the vertical direction and the horizontal direction to form a joint portion, wherein the first protruding portion of each of the two end plates is located between the two tying bands, and wherein the two first protruding portions and the two long sides of the two tying bands form a recess in a top portion of the battery module, the recess being configured to accommodate a glue; and
insulating parts between the plurality of battery cells and the two end plates, the insulating parts configured to evenly distribute force from the tying band across the plurality of battery cells.