ALEXANDRIA, Va., June 16 -- United States Patent no. 12,306,258, issued on May 20, was assigned to PRIME PLANET ENERGY & SOLUTIONS INC. (Tokyo).
"Calculation device" was invented by Yuka Washio (Kasai, Japan) and Jun Kikuchi (Kakogawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An SBM measures a voltage of a battery, detects a voltage feature quantity, and transmits the voltage feature quantity to a BMU. The BMU measures a current of the battery, detects a current feature quantity, obtains the voltage feature quantity transmitted from the transmission unit, and calculates an impedance of the battery based on the current feature quantity and the voltage feature quantity received within a predetermin...