ALEXANDRIA, Va., June 17 -- United States Patent no. 12,311,785, issued on May 27, was assigned to TOYOTA JIDOSHA K.K. (Toyota, Japan).
"Vehicle drive system" was invented by Akira Yamamoto (Yokkaichi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a vehicle drive system, in at least either of a case where a first ECU receives a collision detection signal or a case where an interlock line is disconnected, the first ECU controls a relay such that electrical connection between a battery and a motor device is disconnected. The motor device includes an electric motor for traveling, a PCU, a second ECU, and a backup power supply. The PCU includes one or more capacitors. When the interlock line is disconn...