ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,411,183, issued on Sept. 9, was assigned to SHANGHAI GREEN EAR TECHNOLOGY Co. LTD. (Shanghai).
"Method and apparatus for measuring battery impedance value" was invented by Yun Bao (Shanghai) and Gongshun Bao (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a method and apparatus for measuring a battery impedance value. The following steps are executed: performing multiple pulse discharges on a battery in multiple different discharge time periods, and separately measuring multiple equivalent direct current resistance values of the battery; drawing an equivalent direct current resistance spectrum, the equivalent dir...