All-in-one power supply apparatus for electric vehicle, powertrain, and electric vehicle

A powertrain of an electric vehicle, comprising:

• a drive motor;
• and
• a power supply apparatus, comprising:
• a housing comprising a plurality of mounting holes respectively configured to mount a first alternating current connector, a second alternating current connector, a first direct current connector, and a second direct current connector, wherein the first alternating current connector is configured to connect to an alternating current power supply, the second alternating current connector is configured to connect to the drive motor of the electric vehicle, the first direct current connector is configured to connect to a power battery of the electric vehicle, and the second direct current connector is configured to connect to a low voltage battery or an in-vehicle load of the electric vehicle;
• a first control circuit configured to control a first group of bridge arms to receive a first alternating current through the first alternating current connector;
• a second control circuit configured to control two ends of a second group of bridge arms to output a first direct current through the first direct current connector or receive, through the first direct current connector, power supplied by the power battery;
• and
• a third control circuit configured to control bridge arm middle points of a third group of bridge arms to output a second alternating current through the second alternating current connector, and control an output end of a fourth group of bridge arms to output a second direct current through the second direct current connector, wherein a voltage of the second direct current is less than a voltage of the first direct current and a supply voltage of the power battery, and wherein the bridge arm middle points of the third group of bridge arms are configured to connect to a multi-phase winding of the drive motor and output the second alternating current to the multi-phase winding of the drive motor.

An electric vehicle, comprising:

• a powertrain, comprising a power supply apparatus and a drive motor, wherein the power supply apparatus comprises:
• a housing comprising a plurality of mounting holes respectively configured to mount a first alternating current connector, a second alternating current connector, a first direct current connector, and a second direct current connector, the first alternating current connector is configured to connect to an alternating current power supply, the second alternating current connector is configured to connect to the drive motor of the electric vehicle, the first direct current connector is configured to connect to a power battery of the electric vehicle, and the second direct current connector is configured to connect to a low voltage battery or an in-vehicle load of the electric vehicle;
• a first control circuit configured to control a first group of bridge arms to receive a first alternating current through the first alternating current connector;
• a second control circuit configured to control two ends of a second group of bridge arms to output a first direct current through the first direct current connector or receive, through the first direct current connector, power supplied by the power battery;
• and
• a third control circuit configured to control bridge arm middle points of the third group of bridge arms to output a second alternating current through the second alternating current connector, and control an output end of the fourth group of bridge arms to output a second direct current through the second direct current connector, wherein a voltage of the second direct current is less than a voltage of the first direct current and a supply voltage of the power battery, and wherein the bridge arm middle points of the third group of bridge arms are configured to connect to a multi-phase winding of the drive motor and output the second alternating current to the multi-phase winding of the drive motor.