US 12,334,594 B2
Battery module having rail type socket and battery pack including the same
Chang Hui Lee, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/793,353
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Dec. 28, 2020, PCT No. PCT/KR2020/019190
§ 371(c)(1), (2) Date Jul. 15, 2022,
PCT Pub. No. WO2021/162238, PCT Pub. Date Aug. 19, 2021.
Claims priority of application No. 10-2020-0017410 (KR), filed on Feb. 13, 2020.
Prior Publication US 2023/0034195 A1, Feb. 2, 2023
Int. Cl. H01M 50/509 (2021.01); H01M 50/213 (2021.01); H01M 50/503 (2021.01); H01M 50/507 (2021.01); H01M 50/559 (2021.01)
CPC H01M 50/509 (2021.01) [H01M 50/213 (2021.01); H01M 50/503 (2021.01); H01M 50/507 (2021.01); H01M 50/559 (2021.01)] 11 Claims
OG exemplary drawing
 
1. A battery module comprising a plurality of battery cell assemblies, each of the battery cell assemblies including two or more cylindrical battery cells connected to each other in parallel, and the plurality of battery cell assemblies being connected to each other in series,
wherein each battery cell assembly having the parallel connection structure is configured such that negative electrodes of the two or more cylindrical battery cells are electrically connected to each other via a rail type socket,
wherein the series connection between the battery cell assemblies includes an electrical connection between the rail type socket and positive electrodes of battery cells of an adjacent battery cell assembly via connection members,
wherein each of the cylindrical battery cells comprises a cell case having a lower surface and a side surface as a negative electrode and a positive electrode terminal at a center of an upper surface of the cell case so as to protrude by a predetermined height,
wherein a recessed portion inwardly depressed by a predetermined depth is at a predetermined position of the side surface, and
wherein the rail type socket comprises a pair of side parts comprising a first extension portion configured to be brought into tight contact with the side surfaces of the battery cells and a bent portion configured to be seated in the recessed portions of the battery cells in a state in which one side thereof is connected to the first extension portion.