ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,555,863, issued on Feb. 17, was assigned to TOYOTA BATTERY Co. LTD. (Kosai, Japan), TOYOTA JIDOSHA K.K. (Toyota, Japan) and PRIME PLANET ENERGY & SOLUTIONS INC. (Tokyo).

"Battery stack" was invented by Ryotaro Sakai (Toyohashi, Japan) and Takaaki Izumoto (Toyohashi, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A battery stack includes cells that are arranged in a row and bound together. Each of the cells includes a case and an electrode body accommodated in the case. The cells include multiple types of position variation cells, in which positions of electrode bodies of the cells are different from each other when the cells are viewed in an arran...