US 12,347,842 B2
Battery module having structure capable of rapid preheating, battery pack comprising same, and vehicle comprising same
Jeong-Seop Lee, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 17/281,446
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Mar. 23, 2020, PCT No. PCT/KR2020/003957
§ 371(c)(1), (2) Date Mar. 30, 2021,
PCT Pub. No. WO2020/230998, PCT Pub. Date Nov. 19, 2020.
Claims priority of application No. 10-2019-0057047 (KR), filed on May 15, 2019.
Prior Publication US 2022/0006142 A1, Jan. 6, 2022
Int. Cl. H01M 10/6569 (2014.01); B60L 50/64 (2019.01); B60L 58/27 (2019.01); H01M 10/615 (2014.01); H01M 10/625 (2014.01); H01M 10/647 (2014.01); H01M 10/6595 (2014.01); H01M 50/105 (2021.01); H01M 50/209 (2021.01); H01M 50/211 (2021.01); H01M 50/249 (2021.01); H01M 50/271 (2021.01); H01M 50/296 (2021.01); H01M 50/50 (2021.01); H01M 50/507 (2021.01)
CPC H01M 10/6569 (2015.04) [B60L 50/64 (2019.02); H01M 10/615 (2015.04); H01M 10/625 (2015.04); H01M 10/647 (2015.04); H01M 10/6595 (2015.04); H01M 50/209 (2021.01); H01M 50/249 (2021.01); H01M 50/271 (2021.01); H01M 50/50 (2021.01); H01M 50/507 (2021.01); B60L 58/27 (2019.02); H01M 50/105 (2021.01); H01M 50/211 (2021.01); H01M 50/296 (2021.01); H01M 2220/20 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A battery module, comprising:
a cell stack having a plurality of battery cells;
a phase change preheater disposed on the cell stack and containing a phase change material that changes phase as a crystal nucleus is formed therein, thereby causing an exothermic reaction; and
a film heater disposed on the phase change preheater, wherein the phase change preheater is disposed outside the cell stack in between the film heater and the cell stack
wherein the phase change preheater includes:
a pouch located on the cell stack;
the phase change material contained in the pouch;
a first driving unit located in the pouch;
a first friction plate attached to the first driving unit; and
a second friction plate configured to form the crystal nucleus in the form of a metal crystal nucleus by causing friction with the first friction plate as the first driving unit is driven.