ALEXANDRIA, Va., March 17 -- United States Patent no. 12,580,259, issued on March 17, was assigned to PANASONIC ENERGY Co. LTD. (Osaka, Japan).
"Battery pack" was invented by Manabu Tada (Hyogo, Japan), Takeshi Hashimoto (Nara, Japan) and Ryusuke Tsujiguchi (Hyogo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A battery pack includes a plurality of batteries each including a discharge valve that opens when an internal pressure becomes higher than a set pressure, and case housing batteries. Case has an integrated structure of plastic resin case and metal plate, resin case has heat radiation opening closed by metal plate, and metal plate has a plurality of smoke discharge holes in closed region where he...