ALEXANDRIA, Va., May 26 -- United States Patent no. 12,640,403, issued on May 26, was assigned to SK On Co. Ltd. (Seoul, South Korea).
"Secondary battery internal pressure measurement method" was invented by Sang Jun Park (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "In order to more accurately measure internal pressure of a secondary battery, the present disclosure provides a measurement method including (a) interposing the secondary battery between an upper plate and a lower plate, (b) increasing internal pressure of the secondary battery by injecting a gas into the inside of the secondary battery, (c) monitoring surface pressure of the secondary battery at a measuring member which i...