US 11,923,523 B2
Battery module
Jee-Soon Choi, Daejeon (KR); Jin-Hak Kong, Daejeon (KR); and Yong-Seok Choi, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., (KR)
Appl. No. 16/650,211
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Feb. 19, 2019, PCT No. PCT/KR2019/001994
§ 371(c)(1), (2) Date Mar. 24, 2020,
PCT Pub. No. WO2019/194413, PCT Pub. Date Oct. 10, 2019.
Claims priority of application No. 10-2018-0039232 (KR), filed on Apr. 4, 2018.
Prior Publication US 2020/0266398 A1, Aug. 20, 2020
Int. Cl. H01M 10/617 (2014.01); H01M 10/48 (2006.01); H01M 10/6551 (2014.01); H01M 50/211 (2021.01); H01M 50/529 (2021.01); H01M 10/625 (2014.01); H01M 50/224 (2021.01); H01M 50/536 (2021.01)
CPC H01M 10/6551 (2015.04) [H01M 10/482 (2013.01); H01M 10/617 (2015.04); H01M 50/529 (2021.01); H01M 10/625 (2015.04); H01M 50/211 (2021.01); H01M 50/224 (2021.01); H01M 50/536 (2021.01)] 9 Claims
OG exemplary drawing
 
1. A battery module, comprising:
a cell assembly having at least three battery cells stacked along a stacking axis, such that an inner direction is defined from an outermost side of the cell assembly towards a center of the cell assembly along the stacking axis, and an outer direction is defined from the center of the cell assembly towards the outermost side of the cell assembly along the stacking axis, wherein a first one of the battery cells located at an interior position within the cell assembly along the stacking axis has a greater thickness along the stacking axis than a second one of the battery cells located in the outer direction from the first one of the battery cells, and wherein each of the at least three battery cells is received within a respective accommodation portion of a single, integrally-formed exterior case, such that the accommodation portion receiving the first one of the battery cells has a greater thickness along the stacking axis than the accommodation portion receiving the second one of the battery cells; and
a module housing having at least one sidewall and configured to accommodate the cell assembly including the single, integrally-formed exterior case in an inner space defined by the sidewall;
wherein the first one of the battery cells located at the interior position within the cell assembly has a greater height along a height direction transverse to the stacking axis than the second one of the battery cells located in the outer direction from the first one of the battery cells, and wherein the module housing has a rectangular parallelepiped shape includingan upper wall and a lower wall that extend in a parallel relationshipto the stacking axis and are spaced apart from one another in the height direction, such that a highest point of the second one of the batterycells is spaced further from at least one of the upper and lower walls in the height direction than a highest point of the first one of the battery cells.