US 12,341,175 B2
Battery module and battery pack including the same
Min Seop Kim, Daejeon (KR); Junyeob Seong, Daejeon (KR); and Sunghwan Jang, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 17/621,113
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Mar. 11, 2021, PCT No. PCT/KR2021/003033
§ 371(c)(1), (2) Date Dec. 20, 2021,
PCT Pub. No. WO2021/215662, PCT Pub. Date Oct. 28, 2021.
Claims priority of application No. 10-2020-0048652 (KR), filed on Apr. 22, 2020.
Prior Publication US 2022/0352575 A1, Nov. 3, 2022
Int. Cl. H01M 10/6556 (2014.01); H01M 10/613 (2014.01); H01M 10/617 (2014.01); H01M 10/647 (2014.01); H01M 10/6554 (2014.01); H01M 50/204 (2021.01); H01M 50/211 (2021.01); H01M 50/24 (2021.01)
CPC H01M 10/6556 (2015.04) [H01M 10/617 (2015.04); H01M 10/647 (2015.04); H01M 10/6554 (2015.04); H01M 50/204 (2021.01); H01M 50/211 (2021.01); H01M 50/24 (2021.01); H01M 10/613 (2015.04); H01M 2220/20 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A battery module comprising:
a battery cell stack in which a plurality of battery cells are stacked, each battery cell extending in a longitudinal direction, the battery cells being stacked adjacent to one another in a lateral direction perpendicular to the longitudinal direction;
a module frame for accommodating the battery cell stack, the module frame having a rectangular shape defining a length in the longitudinal direction and a width in the lateral direction, the length being longer than the width; and
a heat sink formed on a lower side of the module frame to cool the plurality of battery cells,
wherein the heat sink includes a lower plate, an inlet, an outlet, and a flow path part that connects the inlet and the outlet and which defines a flow path for a refrigerant,
wherein the flow path part includes:
a first path set that collects first flow paths extending in the longitudinal direction perpendicular to a stacking direction of the battery cell stack; and
a second path set that collects second paths extending in the lateral direction parallel to the stacking direction of the battery cell stack; and
a first side wall part extending in the longitudinal direction and a second side wall part extending in the lateral direction, a total length of the second side wall part being longer than a total length of the first side wall part,
wherein a total length of the second path set in the lateral direction of the module frame is longer than a total length of the first path set in the longitudinal direction of the module frame, and
wherein the first flow paths include an inflow path from the inlet and an outflow path to the outlet, the inflow path and the outflow path both extending in the longitudinal direction, and
wherein each of the first flow paths and the second flow paths is wider than each of the first side wall part and the second side wall part, such that the flow path part overlies most of a total area of the lower side of the module frame.