公开(公告)号：US20240387936A1

公开(公告)日：2024-11-21

申请号：US18318111

申请日：2023-05-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Meng JIANG ,  Erik Brandon GOLM ,  Meinan HE ,  Louis G. HECTOR, JR. ,  Feng FENG

IPC: H01M50/325 ,  H01M10/647 ,  H01M50/383

Abstract: A pouch battery cell includes a pouch enclosure and a battery cell arranged in the pouch enclosure. A first terminal is connected to the battery cell through the pouch enclosure. A second terminal is connected to the battery cell through the pouch enclosure. A check valve includes a first gas channel in fluid communication with an inner volume of the pouch enclosure and a second gas channel. The check valve vents gas from the pouch enclosure when a difference between pressure at the first gas channel and the second gas channel is greater than a predetermined pressure difference and restricts flow of gas from the second gas channel to the first gas channel.