US 12,381,282 B2
Battery pack including hold-down bracket having protrusion structure formed thereon
Hyun Young Cho, Daejeon (KR); Tae Hwan Roh, Daejeon (KR); and Yoon Hee Lee, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/637,727
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Sep. 2, 2020, PCT No. PCT/KR2020/011781
§ 371(c)(1), (2) Date Feb. 23, 2022,
PCT Pub. No. WO2021/060734, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 10-2019-0116903 (KR), filed on Sep. 23, 2019.
Prior Publication US 2022/0285780 A1, Sep. 8, 2022
Int. Cl. H01M 50/264 (2021.01); H01M 50/238 (2021.01); H01M 50/249 (2021.01)
CPC H01M 50/264 (2021.01) [H01M 50/238 (2021.01); H01M 50/249 (2021.01); H01M 2220/20 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A battery pack comprising:
a battery module assembly comprising two or more battery modules, each of the battery modules having one or more battery cells arranged adjacent to each other in a state of being mounted in cartridges;
a base plate having the battery module assembly loaded thereon; and
a hold-down bracket fixing the battery module assembly to the base plate,
wherein:
each of the cartridges comprises a step portion having a lower part protruding outwards,
the hold-down bracket comprises an upper end portion covering upper surfaces of the step portion of the cartridges, a lower end portion coupled to the base plate, and a middle portion connecting the upper end portion and the lower end portion to each other, and
a protrusion structure protruding in a direction toward the base plate is formed on the lower end portion of the hold-down bracket,
wherein the protrusion structure comprises a first protrusion formed on each of opposite ends of the lower end portion of the hold-down bracket and at least one second protrusion formed on a remaining region of the lower end portion of the hold-down bracket excluding the opposite ends, and
wherein a plurality of through-holes configured to fix the hold-down bracket to the base plate are formed in the lower end portion of the hold down bracket, and the at least one second protrusion is located between the plurality of through-holes and is aligned with the plurality of though-holes in a longitudinal direction of the lower end portion of the hold down bracket.