ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,416,681, issued on Sept. 16, was assigned to HITACHI HIGH-TECH Corp. (Tokyo).
"Battery state estimation device and power system" was invented by Toru Kouno (Tokyo), Emha Bayu Miftahullatif (Tokyo), Hiroya Fujimoto (Tokyo), Yutaka Ueda (Tokyo) and Katsutoshi Kondo (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "The purpose of the present invention is to provide a technique capable of accurately estimating SOH without relying on a calculation standard of a capacity change when obtaining the SOH. The battery state estimation device according to the present invention specifies a first period and a second period in a stop period after a battery has co...