US 12,230,821 B2
Battery pack and electric vehicle
Long He, Shenzhen (CN); Huajun Sun, Shenzhen (CN); Yan Zhu, Shenzhen (CN); Liangwen Tan, Shenzhen (CN); and Long Wan, Shenzhen (CN)
Assigned to BYD COMPANY LIMITED, Shenzhen (CN)
Appl. No. 17/777,938
Filed by BYD COMPANY LIMITED, Guangdong (CN)
PCT Filed Oct. 22, 2020, PCT No. PCT/CN2020/122891
§ 371(c)(1), (2) Date May 18, 2022,
PCT Pub. No. WO2021/098440, PCT Pub. Date May 27, 2021.
Claims priority of application No. 201911129785.1 (CN), filed on Nov. 18, 2019.
Prior Publication US 2022/0416343 A1, Dec. 29, 2022
Int. Cl. H01M 50/209 (2021.01); B60L 50/64 (2019.01); H01M 10/613 (2014.01); H01M 10/625 (2014.01); H01M 10/6555 (2014.01); H01M 50/218 (2021.01); H01M 50/264 (2021.01); H01M 50/291 (2021.01)
CPC H01M 50/209 (2021.01) [B60L 50/64 (2019.02); H01M 10/613 (2015.04); H01M 10/625 (2015.04); H01M 10/6555 (2015.04); H01M 50/218 (2021.01); H01M 50/264 (2021.01); H01M 50/291 (2021.01); H01M 2220/20 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A battery pack, comprising:
a housing comprising a bottom surface and a top surface; and
a battery assembly arranged in the housing;
wherein the battery assembly comprises a cell sequence and a structural reinforcing member; the cell sequence comprises a plurality of cells, and at least some of the cells in the cell sequence are connected by the structural reinforcing member; each of the cells comprises a bottom surface, a top surface, and lateral surfaces; the bottom surface of each cell faces the bottom surface of the housing, and the top surface of each cell faces the top surface of the housing; the lateral surfaces comprise two first lateral surfaces opposite to each other and two second lateral surfaces opposite to each other, and each of the first lateral surfaces has an area greater than an area of the top surface of each cell, an area of the bottom surface of each cell, and an areas of each of the second lateral surfaces of each cell; and the cells in the battery assembly are arranged sequentially along a first direction, and second lateral surfaces of two adjacent cells are arranged facing each other; and
the battery assembly abuts the bottom surface of the housing to be supported in the housing, wherein the battery assembly is a first battery assembly, and the battery pack further comprises a second battery assembly adjacent to the first battery assembly, wherein the cells in the cell sequence of the first battery assembly and cells in a cell sequence of the second battery assembly are arranged in a misaligned manner.
 
28. An electric vehicle, comprising a battery pack, wherein the battery pack comprises:
a housing comprising a bottom surface and a top surface; and
a battery assembly arranged in the housing;
wherein the battery assembly comprises a cell sequence and a structural reinforcing member; the cell sequence comprises a plurality of cells, and at least some of the cells in the cell sequence are connected by the structural reinforcing member; each of the cells comprises a bottom surface, a top surface, and lateral surfaces; the bottom surface of each cell faces the bottom surface of the housing, and the top surface of each cell faces the top surface of the housing; the lateral surfaces comprise two first lateral surfaces opposite to each other and two second lateral surfaces opposite to each other, and each of the first lateral surfaces has an area greater than an area of the top surface of each cell, an area of the bottom surface of each cell, and an areas of each of the second lateral surfaces of each cell; and the cells in the battery assembly are arranged sequentially along a first direction, and second lateral surfaces of two adjacent cells are arranged facing each other; and
the battery assembly abuts the bottom surface of the housing to be supported in the housing, wherein the battery assembly is a first battery assembly, and the battery pack further comprises a second battery assembly adjacent to the first battery assembly, wherein the cells in the cell sequence of the first battery assembly and cells in a cell sequence of the second battery assembly are arranged in a misaligned manner.