US 11,682,806 B2
Battery stack structure
Yutaka Yokoyama, Tokyo (JP); and Kazuki Sakai, Tokyo (JP)
Assigned to SUBARU CORPORATION, Tokyo (JP)
Filed by SUBARU CORPORATION, Tokyo (JP)
Filed on Dec. 11, 2020, as Appl. No. 17/119,120.
Claims priority of application No. JP2020-047614 (JP), filed on Mar. 18, 2020.
Prior Publication US 2021/0296720 A1, Sep. 23, 2021
Int. Cl. H01M 10/6556 (2014.01); H01M 10/613 (2014.01); H01M 10/625 (2014.01); H01M 10/6561 (2014.01); H01M 10/647 (2014.01); H01M 10/6562 (2014.01); H01M 50/507 (2021.01); H01M 50/284 (2021.01); H01M 50/249 (2021.01); H01M 50/509 (2021.01)
CPC H01M 10/6556 (2015.04) [H01M 10/613 (2015.04); H01M 10/625 (2015.04); H01M 10/6561 (2015.04); H01M 50/507 (2021.01); H01M 2220/20 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A battery stack structure comprising:
a battery stack comprising multiple battery cells that are spaced from each other;
a cooling air introduction passage adjacent to a first side of the battery stack, the cooling air introduction passage being configured to allow air to flow in the cooling air introduction passage before the air cools the battery stack;
a junction box adjacent to a second side of the battery stack, the junction box being configured to allow the air to flow in the junction box after the air has cooled the battery stack, the junction box containing an electronic device; and
a bus bar contained in the junction box, the bus bar being electrically and thermally coupled to the electronic device, the bus bar being configured to allow passing of current that is charged to or discharged from the battery stack, wherein
a direction of a flow of the air flowing from the battery stack into the junction box faces a major surface of the bus bar, and
wherein the junction box is configured to have a laterally outer closed-off wall and an interior laterally positioned opening that is free of a blocking flow enclosure wall such that the direction of the flow of the air flowing from the battery stack into the junction box flows directly, and without redirection channeling, into the major surface of the bus bar.