Power supply control method for vehicle, vehicle, control unit and medium

1. A power supply control method for a vehicle, wherein the vehicle comprises electrical equipment, a relay and a power interface, and wherein the power interface is electrically coupled to the electrical equipment via the relay, the power supply control method comprising:

determining whether the power interface is coupled to an external power source;

determining whether a voltage of the external power source is within a predetermined range when the power interface is coupled to the external power source; and

controlling the relay to be switched on in response to the voltage of the external power source being within the predetermined range.

2. The power supply control method according to claim 1 , wherein the vehicle further comprises a power distribution unit located between the relay and the electrical equipment, and wherein the power supply control method further comprises:

controlling the power distribution unit to distribute power from the external power source to the electrical equipment after or when the relay is controlled to be switched on.

3. The power supply control method according to claim 1 , wherein the vehicle further comprises an engine, a control unit, a power distribution unit, a battery and a generator, the power distribution unit being located between the relay and the electrical equipment, and

wherein the power supply control method further comprises:

determining whether the engine has been started in response to the control unit being activated; and

controlling the power distribution unit to distribute power from the battery or the generator to the electrical equipment in response to the engine having been started.

4. The power supply control method according to claim 1 , wherein the vehicle further comprises an engine and a control unit, and

wherein the power supply control method further comprises:

determining whether the engine has been started in response to the control unit being activated; and

wherein determining whether the power interface is coupled to an external power source comprises:

determining whether the power interface is coupled to the external power source in response to the engine not being started.

5. The power supply control method according to claim 1 , further comprising:

issuing an instruction to prompt that the voltage is abnormal in response to determining that the voltage of the external power source is not within the predetermined range.

6. The power supply control method according to claim 1 , wherein the vehicle further comprises a power distribution unit located between the relay and the electrical equipment, and

wherein the power supply control method further comprises:

determining whether voltages and currents of the relay and the power distribution unit indicate a fault; and

in response to the voltages or the currents of the relay or the power distribution unit indicating the fault, performing at least one of:

controlling the relay to be switched off; or

controlling the power distribution unit to stop distributing power to the electrical equipment.

7. The power supply control method according to claim 6 , further comprising:

storing information corresponding to the fault, wherein the fault comprises at least one of a voltage fault and a current fault, the voltage fault comprising one of an over-voltage fault and an under-voltage fault, and the current fault comprising an over-current fault.

8. The power supply control method according to claim 6 , wherein the voltages or the currents of the relay or the power distribution unit being in a predetermined range for a predetermined length of time indicates a fault.

9. The power supply control method according to claim 1 , wherein the electrical equipment comprises at least one of a sensor, a vehicle-mounted communication device or a computing apparatus.

10. A vehicle, comprising:

an electrical equipment;

a relay;

a power interface electrically coupled to the electrical equipment via the relay; and

a control unit configured for:

determining whether the power interface is coupled to an external power source;

determining whether a voltage of the external power source is within a predetermined range when the power interface is coupled to the external power source; and

controlling the relay to be switched on in response to the voltage of the external power source being within the predetermined range.

11. The vehicle according to claim 10 , further comprising an engine,

wherein the control unit is further configured for:

determining whether the engine is in a working state after the relay is controlled to be switched on; and

issuing an instruction to turn off the engine in response to the engine being in the working state.

12. The vehicle according to claim 10 , further comprising an engine,

wherein the control unit is further configured for:

determining whether the engine has been started in response to the control unit being activated, wherein

determining whether the power interface is coupled to an external power source comprises:

determining whether the power interface is coupled to the external power source in response to the engine not being started.

13. The vehicle according to claim 10 , further comprising:

a power distribution unit located between the relay and the electrical equipment,

wherein the control unit is further configured for:

initiating detection of voltages and currents of the relay and the power distribution unit; and

in response to the detected voltages or currents indicating a fault, performing at least one of:

controlling the relay to be switched off; or

controlling the power distribution unit to stop distributing power to the electrical equipment.

14. The vehicle according to claim 10 , wherein the relay comprises a first end electrically connected to the power interface and a second end electrically coupled to the electrical equipment, and

determining whether a voltage of the external power source is within a predetermined range in response to determining that the power interface is coupled to the external power source comprises:

initiating detection of a voltage on the first end of the relay in response to determining that the power interface is coupled to the external power source; and

determining whether the voltage on the first end of the relay is within the predetermined range.

15. A non-transitory computer-readable storage medium having program instructions stored therein, wherein the instructions, when executed by a processor of a control unit, cause the control unit to:

determine whether a power interface of a vehicle is coupled to an external power source, the power interface being electrically coupled to electrical equipment of the vehicle via a relay;

determine whether a voltage of the external power source is within a predetermined range when the power interface is coupled to the external power source; and

control the relay to be switched on in response to the voltage of the external power source being within the predetermined range.

16. The computer-readable storage medium according to claim 15 , wherein the vehicle further comprises an engine, and

wherein the instructions, when executed by the processor of the control unit, further cause the control unit to:

determine whether the engine is in a working state after the relay is controlled to be switched on; and

issue an instruction to turn off the engine in response to the engine being in the working state.

17. The computer-readable storage medium according to claim 15 , wherein the vehicle further comprises a power distribution unit located between the relay and the electrical equipment, and

wherein the instructions, when executed by the processor of the control unit, further cause the control unit to:

control the power distribution unit to distribute power from the external power source to the electrical equipment after or when the relay is controlled to be switched on.

18. The computer-readable storage medium according to claim 15 , wherein the vehicle further comprises an engine, a control unit, a power distribution unit, a battery and a generator, the power distribution unit being located between the relay and the electrical equipment, and

wherein the instructions, when executed by the processor of the control unit, further cause the control unit to:

determine whether the engine has been started in response to the control unit being activated; and

control the power distribution unit to distribute power from the battery or the generator to the electrical equipment in response to the engine having been started.

19. The power supply control method according to claim 1 , wherein the vehicle further comprises an engine and a control unit, and wherein the power supply control method further comprises:

determining, by the control unit, whether the engine is in a working state after the relay is controlled to be switched on; and

issuing, by the control unit, an instruction to turn off the engine in response to the engine being in the working state.

20. The power supply control method according to claim 1 , wherein the vehicle further comprises a control unit, the relay comprises a first end electrically coupled to the power interface and a second end electrically coupled to the electrical equipment, and

determining whether a voltage of the external power source is within a predetermined range comprises:

initiating, by the control unit, detection of a voltage on the first end of the relay in response to determining that the power interface is connected to the external power source; and

determining, by the control unit, whether the voltage on the first end of the relay is within the predetermined range.