US 11,909,062 B2
Battery pack comprising battery pack frame capable of preventing welding defect and pressing jig for preparing the same
Seung Ryul Baek, Daejeon (KR); Jeong Pyo Kong, Daejeon (KR); and Jong Hwa Choi, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 16/759,007
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Oct. 4, 2019, PCT No. PCT/KR2019/012999
§ 371(c)(1), (2) Date Apr. 24, 2020,
PCT Pub. No. WO2020/071833, PCT Pub. Date Apr. 9, 2020.
Claims priority of application No. 10-2018-0119139 (KR), filed on Oct. 5, 2018.
Prior Publication US 2021/0184306 A1, Jun. 17, 2021
Int. Cl. H01M 50/289 (2021.01); H01M 50/209 (2021.01); B23K 37/04 (2006.01); B23K 101/36 (2006.01); H01M 50/211 (2021.01)
CPC H01M 50/289 (2021.01) [B23K 37/0443 (2013.01); H01M 50/209 (2021.01); B23K 2101/36 (2018.08); H01M 50/211 (2021.01)] 6 Claims
OG exemplary drawing
 
1. A battery pack comprising:
a battery module comprising a plurality of battery cells or comprising a unit module including the plurality of battery cells;
a battery pack frame body comprising a base plate on which the battery module or the unit module is mounted, and a first side plate and a second side plate connected to the base plate and disposed to face each other;
a top frame coupled to an upper portion of the battery pack frame body; and
a first end plate and a second end plate electrically connected to electrode terminals of the battery module or the unit module, each of the first end plate and the second end plate having an inner surface and an outer surface as opposite surfaces,
wherein at least one of the first end plate and the second end plate is configured to include slits that penetrate through the at least one of the first end plate and the second end plate between the inner surface and the outer surface thereof,
wherein some of the slits are formed at corner edge portions of the at least one of the first end plate and the second end plate, and
wherein the some of the slits are formed in a diagonal direction from the corner edges of the first end plate and the second end plate toward a center part thereof.