ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,549,021, issued on Feb. 10, was assigned to FDK Corp. (Tokyo).
"Battery voltage equalization device" was invented by Kenji Hamada (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A battery voltage equalization device 1 includes: a transformer T including a primary winding T1 into which the output voltage of a battery pack BP is inputted and a plurality of secondary windings T2 corresponding to each of batteries B; a conversion circuit 2 that converts an AC voltage outputted by the secondary windings T2 to a DC voltage; a cutoff circuit 3 provided to cut off a conductive pathway from the conversion circuit 2 to the batteries B; and a control unit 5 ...