CN-121989723-A - Power distributor based on multifunctional vehicle-mounted charging module

Abstract

An on-board charging system for an electric vehicle includes a charging port configured to receive single-phase AC power, a power outlet configured to provide single-phase AC power to one or more external devices, a single-phase inverter connected to the power outlet and configured to provide a power distribution function, a DC battery selectively coupled to the charging port, a bi-directional inverter configured to convert AC power to DC power and vice versa, the bi-directional inverter selectively coupled to the battery, an electric motor coupled to the bi-directional inverter and selectively coupled to the charging port, a DC-AC converter selectively coupled to the electric motor and selectively coupled to the power outlet, and a DC-DC converter coupled to the DC-AC converter and selectively coupled to the battery.

Inventors

• HAO LEI
• M-K.Ruan

Assignees

• 通用汽车环球科技运作有限责任公司

Dates

Publication Date

20260508

Application Date

20241231

Priority Date

20241101

Claims (10)

1. 1. An electric vehicle comprising: A charging port configured to receive single-phase Alternating Current (AC) power; a power outlet configured to provide the single-phase AC power to one or more external devices; A single-phase inverter connected to the power outlet to convert Direct Current (DC) power into single-phase AC power; a DC battery selectively coupled to the charging port via a first switch and a second switch; A bi-directional inverter configured to convert AC power to DC power and DC power to AC power, the bi-directional inverter selectively coupled to the battery via a third switch, a fourth switch, and a fifth switch; An electric motor coupled to the bi-directional inverter and selectively coupled to the charging port via a sixth switch; A DC-AC converter selectively coupled to the electric motor via a seventh switch and an eighth switch, and selectively coupled to the power output via a ninth switch and a tenth switch; A DC-DC converter coupled to the DC-AC converter and selectively coupled to the battery via a twelfth switch and a thirteenth switch; wherein the charging port is selectively coupled to the bi-directional inverter, the electric motor, or the DC-AC converter via a fourteenth switch, and A processor configured to control operations of the first switch, the second switch, the third switch, the fourth switch, the fifth switch, the sixth switch, the seventh switch, the eighth switch, the ninth switch, the tenth switch, the twelfth switch, the thirteenth switch, and the fourteenth switch based on an operation mode of the electric vehicle.
2. 2. The electric vehicle of claim 1, wherein the single-phase AC power is 120Vrms AC power.
3. 3. The electric vehicle of claim 2, wherein during a vehicle-to-vehicle DC boost mode of the electric vehicle, the processor places the first, second, third, seventh, ninth, tenth, twelfth, and thirteenth switches in an open position and places the fourth, fifth, sixth, and fourteenth switches in a closed position.
4. 4. The electric vehicle of claim 2, wherein during a vehicle-to-vehicle buck mode of the electric vehicle, the processor places the first, second, third, fourth, fifth, ninth, and tenth switches in an open position and places the sixth, seventh, eighth, twelfth, thirteenth, and fourteenth switches in a closed position.
5. 5. The electric vehicle of claim 2, wherein during a vehicle-to-load inverter module mode of the electric vehicle, the processor places the first, second, third, fourth, fifth, sixth, seventh, eighth, and fourteenth switches in an open position and places the ninth, tenth, twelfth, and thirteenth switches in a closed position.
6. 6. The electric vehicle of claim 2, wherein during vehicle-to-grid of the electric vehicle, the processor causes the first, second, third, fourth, fifth, ninth, and tenth switches to be in an open position and causes the sixth, seventh, eighth, twelfth, thirteenth, and fourteenth switches to be in a closed position.
7. 7. The electric vehicle of claim 2, wherein during vehicle-to-home of the electric vehicle, the processor causes the first, second, third, fourth, fifth, ninth, and tenth switches to be in an open position and causes the sixth, seventh, eighth, twelfth, thirteenth, and fourteenth switches to be in a closed position.
8. 8. The electric vehicle of claim 2, wherein during an AC charging mode of the electric vehicle, the processor places the third, fourth, fifth, ninth, tenth, first, and second switches in an open position and places the twelfth, thirteenth, fourteenth, sixth, seventh, and eighth switches in a closed position.
9. 9. The electric vehicle of claim 2, wherein during a propulsion mode of the electric vehicle, the processor causes the first switch, the second switch, the sixth switch, the seventh switch, the eighth switch, the ninth switch, the tenth switch, the twelfth switch, the thirteenth switch, and the fourteenth switch to be in an open position and first closes the third switch and the fifth switch to precharge the inverter capacitor, then opens the third switch and closes the fourth switch.
10. 10. The electric vehicle of claim 2, wherein during a direct current fast charge mode of the electric vehicle, the processor causes the third switch, the fourth switch, the fifth switch, the sixth switch, the seventh switch, the eighth switch, the ninth switch, the tenth switch, the twelfth switch, the thirteenth switch, and the fourteenth switch to be in an open position and the first switch and the second switch to be in a closed position.

Description

Power distributor based on multifunctional vehicle-mounted charging module Technical Field The information provided in this section is for the purpose of generally presenting the context of the disclosure. Work of the presently named inventors, to the extent it is described in this section, as well as aspects of the description that may not otherwise qualify as prior art at the time of filing, are neither expressly nor impliedly admitted as prior art against the present disclosure. The present disclosure relates generally to electric vehicles, and more particularly to an on-board charging system for an electric vehicle. Background Electric vehicles use a high-voltage battery to power one or more electric machines to transfer torque to the driveline of the vehicle, either alone or in combination with an internal combustion engine. The term "plug-in vehicle" describes any vehicle, such as a battery electric vehicle, a hybrid electric vehicle, that plugs a charging cable into, for example, a 120 Volt Alternating Current (VAC) or 240VAC wall outlet from the vehicle. An on-board charging module (OBCM) may be used to facilitate recharging of the high voltage battery. A typical OBCM has the necessary electronic circuit hardware and control software to convert single-phase or three-phase Alternating Current (AC) grid voltage to battery-usable Direct Current (DC) voltage. Disclosure of Invention This section provides a general overview of apparatus and methods related to the present invention, and is not a comprehensive disclosure of its full scope or all of its features. One aspect of the present disclosure provides an electric vehicle including a charging port configured to receive single-phase Alternating Current (AC) power; a power outlet configured to provide single-phase AC power to one or more external devices; the power supply includes a single-phase inverter connected to an electric power outlet to convert Direct Current (DC) power to single-phase AC power, a DC battery selectively coupled to a charging port via a first switch and a second switch, a bi-directional inverter configured to convert AC power to DC power and to convert DC power to AC power, the bi-directional inverter selectively coupled to the battery via a third switch, a fourth switch, and a fifth switch, an electric motor coupled to the bi-directional inverter and selectively coupled to the charging port via a sixth switch, a DC-AC converter selectively coupled to the electric motor via a seventh switch and an eighth switch and selectively coupled to the electric power outlet via a ninth switch, a DC-DC converter coupled to the DC-AC converter and selectively coupled to the battery via a twelfth switch, wherein the charging port is selectively coupled to the bi-directional inverter, the electric motor, or the DC-DC converter via a fourteenth switch, and a processor configured to control the first switch, the ninth switch, the eighth switch, the ninth switch, and the thirteenth switch based on the electric vehicle, operation of the thirteenth switch and the fourteenth switch. Implementations of the disclosure may include one or more of the following optional features. In some embodiments, the single-phase AC power is 120Vrms AC power. During a vehicle-to-vehicle DC boost mode of the electric vehicle, the processor causes the first, second, third, seventh, ninth, tenth, twelfth, and thirteenth switches to be in an open position and causes the fourth, fifth, sixth, and fourteenth switches to be in a closed position. During a vehicle-to-vehicle buck mode of the electric vehicle, the processor places the first, second, third, fourth, fifth, ninth, and tenth switches in an open position and places the sixth, seventh, eighth, twelfth, thirteenth, and fourteenth switches in a closed position. During a vehicle-to-load inverter module mode of the electric vehicle, the processor places the first, second, third, fourth, fifth, sixth, seventh, eighth, and fourteenth switches in an open position and places the ninth, tenth, twelfth, and thirteenth switches in a closed position. During vehicle-to-grid of the electric vehicle, the processor places the first, second, third, fourth, fifth, ninth, and tenth switches in an open position and places the sixth, seventh, eighth, twelfth, thirteenth, and fourteenth switches in a closed position. During a vehicle-to-home of the electric vehicle, the processor places the first, second, third, fourth, fifth, ninth, and tenth switches in an open position and places the sixth, seventh, eighth, twelfth, thirteenth, and fourteenth switches in a closed position. During an AC charging mode of the electric vehicle, the processor places the third, fourth, fifth, ninth, tenth, first, and second switches in an open position and places the twelfth, thirteenth, fourteenth, sixth, seventh, and eighth switches in a closed position. During a propulsion mode of the electric vehicle, the processor places the first, second, sixth, sevent