US 12,451,539 B2
Battery pack cooling structure through applying variable thickness of gap filler
Seok Hwan Hong, Anyang (KR); and Sung Su Kim, Suwon (KR)
Assigned to SEOYON E-HWA CO., LTD., Anyang (KR)
Filed by SEOYON E-HWA CO., LTD., Anyang (KR)
Filed on Oct. 21, 2022, as Appl. No. 18/048,443.
Claims priority of application No. 10-2022-0020503 (KR), filed on Feb. 17, 2022.
Prior Publication US 2023/0261279 A1, Aug. 17, 2023
Int. Cl. H01M 10/653 (2014.01); H01M 10/613 (2014.01); H01M 10/6554 (2014.01); H01M 50/204 (2021.01)
CPC H01M 10/653 (2015.04) [H01M 10/613 (2015.04); H01M 10/6554 (2015.04); H01M 50/204 (2021.01)] 8 Claims
OG exemplary drawing
 
1. A battery pack cooling structure comprising:
a battery pack having a structure in which a plurality of battery modules are electrically connected to each other, the plurality of battery modules being positioned side by side in a horizontal direction, the plurality of battery modules including a first battery module at one side end and a second battery module at an opposite side end in the horizontal direction;
each of the plurality to battery modules having a structure in which a plurality of battery cells are electrically connected and are accommodated in a case;
a lower plate of the battery pack, the lower plate comprising a lower plate base and a lower plate cover covering the lower plate base; and
a gap filler made of a thermal conductive material applied on the lower plate and positioned between the battery pack and the lower plate,
wherein an upper surface of the lower plate cover is formed to be stepped down from the first and second side ends toward a center portion of the lower plate cover such that the upper surface of a first portion of the lower plate cover corresponding to the first battery module and the upper surface of a second portion of the lower plate cover corresponding to the second battery module have a higher height than the upper surface of a center portion of the lower plate cover.
 
5. A battery pack cooling structure comprising:
a battery pack having a structure in which a plurality of battery modules are electrically connected to each other, the plurality of battery modules being positioned side by side in a horizontal direction, the plurality of battery modules including a first battery module at one side end and a second battery module at an opposite side end in the horizontal direction;
each of the plurality of battery modules having a structure in which a plurality of battery cells are electrically connected and are accommodated in a case;
a lower plate of the battery pack, the lower plate comprising a lower plate base and a lower plate cover covering the lower plate base; and
a gap filler made of a thermal conductive material applied on the lower plate and positioned between the battery pack and the lower plate,
wherein an upper surface of the lower plate cover is inclined downward from the first and second side ends toward a center portion of the lower plate cover such that the upper surface of a first portion of the lower plate cover corresponding to the first battery module and the upper surface of a second portion of the lower plate cover corresponding to the second battery module have a higher height than the upper surface of the center portion of the lower plate cover.