Patent ID: 11863072
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 0:
1. A power control system for a vehicle comprising:
a battery system including one or more battery packs;
a DC-DC converter connected to the battery system including:
first, second, third, and fourth power switches each including a control terminal, a first terminal and a second terminal,
wherein the second terminal of the first power switch is connected to the first terminal of the second power switch, and wherein the second terminal of the third power switch is connected to the first terminal of the fourth power switch;
a first inductor including a first terminal connected to the second terminal of the first power switch and the first terminal of the second power switch and a second terminal connected to the second terminal of the third power switch and the first terminal of the fourth power switch;
a first bypass switch including a control terminal, a first terminal connected to the first terminal of the first power switch and a second terminal connected to the second terminal of the first power switch; and
a second bypass switch including a control terminal, a first terminal connected to the first terminal of the third power switch and a second terminal connected to the second terminal of the third power switch;

an electric motor configured to receive power from the battery system via the DC-DC converter and to provide propulsion to one or more wheels of the vehicle; and
a controller configured to transition from one of a discharge-buck mode and a charge-boost mode to a bypass mode by starting in an initial state with the first power switch and the second power switching on and off at duty cycles greater than zero and less than one based on first and second pulse-width modulated signals, respectively, the third power switch on based on a third pulse-width modulated signal, the fourth power switch off based on a fourth pulse-width modulated signal, and the first and second bypass switches off.