US 12,444,785 B2
Power battery module, power battery pack and thermal management method of power battery module
Yonggang Zhu, Guangdong (CN); and Jialin Liang, Guangdong (CN)
Assigned to SHENZHEN FLUENTROP TECHNOLOGY CO., LTD., Shenzhen (CN)
Appl. No. 17/922,057
Filed by SHENZHEN FLUENTROP TECHNOLOGY CO., LTD., Guangdong (CN)
PCT Filed Dec. 20, 2021, PCT No. PCT/CN2021/139620
§ 371(c)(1), (2) Date Oct. 28, 2022,
PCT Pub. No. WO2023/070905, PCT Pub. Date May 4, 2023.
Claims priority of application No. 202111260268.5 (CN), filed on Oct. 28, 2021.
Prior Publication US 2024/0222737 A1, Jul. 4, 2024
Int. Cl. H01M 10/63 (2014.01); H01M 10/613 (2014.01); H01M 10/6557 (2014.01)
CPC H01M 10/63 (2015.04) [H01M 10/613 (2015.04); H01M 10/6557 (2015.04)] 14 Claims
OG exemplary drawing
 
1. A power battery module, comprising:
a plurality of battery cell units,
a plurality of heat pipe structures, and
a plurality of liquid channels,
wherein
one end of the heat pipe structure is embedded between the battery cell units, and the liquid channel is connected to the other end, which is not embedded into the battery cell unit, of the heat pipe structure,
the battery cell unit comprises a positive current collector, a positive electrode material, a separator, a negative electrode material and a negative current collector which are arranged in sequence, and two sides of the heat pipe structure are tightly attached to the positive current collector or the negative current collector respectively, wherein the heat pipe structure is a flat heat pipe,
wherein the flat heat pipe comprises an outer shell, wicks attached to the inner wall of the outer shell and supporting columns arranged between the wicks on the two sides,
a steam cavity is formed between the supporting columns, and
the flat heat pipe is kept in a closed state and filled with a working medium.