公开(公告)号：US20230395930A1

公开(公告)日：2023-12-07

申请号：US18032249

申请日：2021-10-15

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Miho SASAKI ,  Tomohiro SASAKI

IPC: H01M50/333 ,  H01M50/30

CPC classification number: H01M50/333 ,  H01M50/394 ,  H01M2200/20

Abstract: A valve structure for a power storage device includes a passage that communicates the interior of a container housing a power storage device element with the exterior of the container, and a check valve disposed to block the passage and configured to open when the internal pressure of the container increases due to gas produced inside the container and pass the gas from the internal side of the container to the external side, the check valve including a valve seat and a valve body, and the valve structure including a liquid disposed to come in contact with the valve seat and the valve body.