US 12,283,679 B2
Battery module and battery pack including the same
Won Kyoung Park, Daejeon (KR); Junyeob Seong, Daejeon (KR); Honggoo Han, Daejeon (KR); and Hyun Seop Yun, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/764,855
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Jul. 26, 2021, PCT No. PCT/KR2021/009647
§ 371(c)(1), (2) Date Mar. 29, 2022,
PCT Pub. No. WO2022/045597, PCT Pub. Date Mar. 3, 2022.
Claims priority of application No. 10-2020-0106332 (KR), filed on Aug. 24, 2020.
Prior Publication US 2022/0344745 A1, Oct. 27, 2022
Int. Cl. H01M 10/6556 (2014.01); H01M 10/613 (2014.01); H01M 10/6554 (2014.01)
CPC H01M 10/6556 (2015.04) [H01M 10/613 (2015.04); H01M 10/6554 (2015.04)] 7 Claims
OG exemplary drawing
 
1. A battery module comprising:
a battery cell stack in which a plurality of battery cells are stacked;
a module frame for housing the battery cell stack; and
a heat sink which is formed under a bottom portion of the module frame and cools the plurality of battery cells,
wherein the heat sink comprises a lower plate and a partition wall forming a flowing path of a refrigerant extending upward from the lower plate,
wherein the partition wall is formed of a shape memory alloy, and a shape of the partition wall is deformed according to temperature, thereby changing the flow of the refrigerant,
wherein the flowing path has an inlet and an outlet and the partition wall forms a serpentine path between the inlet and outlet, and
wherein a portion of the partition wall has a first position to separate a first section of the serpentine path from a second section of the serpentine path and a second position creating an opening between the first section to the second section.