US 11,894,510 B2
Battery pack and vehicle
Kaijie You, Ningde (CN); Yongguang Wang, Ningde (CN); Yu Tang, Ningde (CN); Weilong Lin, Ningde (CN); and Jun Ma, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed on Dec. 13, 2022, as Appl. No. 18/080,082.
Application 18/080,082 is a continuation of application No. 16/856,883, filed on Apr. 23, 2020, granted, now 11,563,248.
Claims priority of application No. 201910565257.4 (CN), filed on Jun. 27, 2019.
Prior Publication US 2023/0108623 A1, Apr. 6, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 50/249 (2021.01); H01M 10/04 (2006.01); H01M 50/271 (2021.01); H01M 50/543 (2021.01); H01M 50/20 (2021.01); H01M 50/55 (2021.01); H01M 50/553 (2021.01); H01M 50/209 (2021.01)
CPC H01M 10/0413 (2013.01) [H01M 10/0431 (2013.01); H01M 50/20 (2021.01); H01M 50/249 (2021.01); H01M 50/271 (2021.01); H01M 50/543 (2021.01); H01M 50/209 (2021.01); H01M 50/55 (2021.01); H01M 50/553 (2021.01); H01M 2220/20 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A battery pack, comprising:
a box assembly; and
a plurality of battery units arranged in the box assembly, wherein the battery units are divided into a plurality of battery unit groups;
wherein the box assembly comprises:
a box body; and
a plurality of fixed beams arranged in parallel in the box body, wherein one or more battery unit groups are placed between two fixed beams;
a plurality of constraint components, wherein each constrain component covers the one or more battery unit groups placed between the two fixed beams, and is attached to the two fixed beams; and
an outer cover attached to the box body, covering the constraint components;
wherein each battery unit comprises:
a shell; and
an electrode assembly arranged in the shell;
wherein the electrode assembly comprises a first pole piece, a second pole piece, and a diaphragm arranged between the first pole piece and the second ole piece; and
wherein
the electrode assembly is of a wound structure and is flat, the outer surface of the electrode assembly comprises two flat surfaces, and the two flat surfaces are oppositely arranged along a height direction of the battery pack; or
the electrode assembly is of a laminated structure, and the first pole piece and the second pole piece are stacked along a height direction of the battery pack.