US 11,967,736 B2
Battery module comprising including chamfered inner cover and chamfered housing to prevent damage during assembly
Jeong-Hyeon Kim, Daejeon (KR); Do-Hyun Park, Daejeon (KR); Jun-Yeob Seong, Daejeon (KR); and Jong-Ha Jeong, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/263,852
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Dec. 19, 2019, PCT No. PCT/KR2019/018145
§ 371(c)(1), (2) Date Jan. 27, 2021,
PCT Pub. No. WO2020/138849, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 10-2018-0169969 (KR), filed on Dec. 26, 2018.
Prior Publication US 2021/0320385 A1, Oct. 14, 2021
Int. Cl. H01M 50/505 (2021.01); H01M 10/42 (2006.01); H01M 10/48 (2006.01); H01M 50/209 (2021.01); H01M 50/211 (2021.01); H01M 50/249 (2021.01); H01M 50/287 (2021.01); H01M 50/50 (2021.01); H01M 50/569 (2021.01)
CPC H01M 50/505 (2021.01) [H01M 10/425 (2013.01); H01M 10/48 (2013.01); H01M 50/209 (2021.01); H01M 50/211 (2021.01); H01M 50/249 (2021.01); H01M 50/287 (2021.01); H01M 50/50 (2021.01); H01M 50/569 (2021.01); H01M 2010/4271 (2013.01); H01M 2220/20 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A battery module comprising:
a cell assembly provided with a plurality of secondary batteries mutually stacked in a left to right direction, each of the plurality of secondary batteries having an electrode lead protruding in a front and back direction;
a bus bar assembly provided with a bus bar frame located on a front side or a rear side of the cell assembly, the bus bar frame having a plate-shaped body portion, and a bus bar mounted on an outer surface of the bus bar frame, the bus bar having a conductive metal to electrically connect the electrode leads of the plurality of secondary batteries to each other;
an inner cover provided with a plate portion located on an outer side of the cell assembly, the inner cover formed with a first chamfer on an outer peripheral portion of a front edge of the inner cover, the first chamfer extending to a top surface of the inner cover, and a coupling portion coupled to a first end portion of the body portion of the bus bar frame on a part of the outer peripheral portion of the plate portion;
a module housing having a tube shape with a top wall, a bottom wall and sidewalls, a first open end and a second open end; and
a second chamfer formed in the top wall at the first open end, the second chamfer extending to a bottom surface of the top wall.