Patent ID: 11884221
Assignee: FORD GLOBAL TECHNOLOGIES, LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 0:
1. An on-board electrical network of a motor vehicle comprising:
a first voltage circuit;
a second voltage circuit; and
a DC-to-DC converter coupled between the first voltage circuit and the second voltage circuit;
wherein the first voltage circuit has a first operating voltage which is higher than a second operating voltage in the second voltage circuit;
wherein the first voltage circuit comprises a first battery at the first operating voltage;
wherein the second voltage circuit comprises a main battery and an auxiliary voltage source both at the second operating voltage;
wherein the second voltage circuit further comprises at least one of a transmission control unit and an integrated hybrid controller;
wherein the second voltage circuit further comprises a first switching element connected between the main battery and the least one of a transmission control unit and an integrated hybrid controller and a second switching element connected between the auxiliary voltage source and the least one of a transmission control unit and an integrated hybrid controller;
wherein each of the first and second switching elements is normally in a closed state to supply electrical energy from the main battery and the auxiliary voltage source to the at least one of a transmission control unit and an integrated hybrid controller, wherein the first switching element is switched to an open state in response to detection of a fault associated with the main battery, and wherein the second switching element is switched to an open state in response to detection of a fault associated with the auxiliary voltage source.