US 12,002,995 B2
Battery module, battery pack comprising battery module, and vehicle comprising battery pack
Kyung-Mo Kim, Daejeon (KR); Jeong-O Mun, Daejeon (KR); Jin-Yong Park, Daejeon (KR); and Ho-June Chi, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/051,102
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Aug. 19, 2019, PCT No. PCT/KR2019/010511
§ 371(c)(1), (2) Date Oct. 27, 2020,
PCT Pub. No. WO2020/060039, PCT Pub. Date Mar. 26, 2020.
Claims priority of application No. 10-2018-0113241 (KR), filed on Sep. 20, 2018.
Prior Publication US 2021/0234241 A1, Jul. 29, 2021
Int. Cl. H01M 10/00 (2006.01); B23K 26/21 (2014.01); H01M 50/209 (2021.01); H01M 50/211 (2021.01); H01M 50/50 (2021.01); H01M 50/503 (2021.01); H01M 50/516 (2021.01); H01M 50/528 (2021.01); H01M 50/536 (2021.01)
CPC H01M 50/516 (2021.01) [B23K 26/21 (2015.10); H01M 50/209 (2021.01); H01M 50/211 (2021.01); H01M 50/50 (2021.01); H01M 50/503 (2021.01); H01M 50/528 (2021.01); H01M 50/536 (2021.01); H01M 2220/20 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A battery module, comprising:
a plurality of battery cells having electrode leads protruding in at least one direction; and
at least one bus bar disposed at one side of the plurality of battery cells and connected to the electrode leads of the plurality of battery cells, the at least one bus bar having a beam penetration prevention guider configured to prevent a laser beam from penetrating toward the plurality of battery cells during a laser welding,
wherein the at least one bus bar includes:
a bus bar body configured to cover one side of the plurality of battery cells and formed to have a predetermined thickness,
guide chamfers provided at opposite sides of an upper portion of the bus bar body to guide the laser welding, and
the beam penetration prevention guider provided in a pair, and the pair of beam penetration prevention guiders provided to the opposite sides of the bus bar body, respectively,
wherein the pair of beam penetration prevention guiders extend to be inclined downward from the guide chamfers towards a lower portion of the bus bar body, respectively,
wherein inclined surfaces of the guide chamfers directly connect to opposite ends of an uppermost surface of the bus bar body, respectively,
wherein inclined surfaces of the pair of beam penetration prevention guiders directly connect to the inclined surfaces of the guide chamfers, respectively,
wherein the inclined surfaces of the pair of beam penetration prevention guiders directly connect to opposite ends of a lowermost surface of the bus bar body, respectively, and
wherein the electrode leads laser-welded to the at least one bus bar are in contact only with the pair of beam penetration prevention guiders constituting the opposite side surfaces of the bus bar body without being bent in a horizontal direction at an upper side of the at least one bus bar.