Charging apparatus and method thereof

Abstract

The application discloses a charging device and a charging method designed to receive alternating current (AC) transmitted from a power supply device and to charge a vehicle. The AC received by a power supply cabinet is subjected to voltage conversion to obtain a cabinet output voltage. A terminal gun cabinet is coupled to and communicates with the power supply cabinet via a first connecting cable. Via the first connecting cable, the power supply cabinet provides an terminal input voltage to the terminal gun cabinet. A detection circuit within the terminal gun cabinet detects the terminal input voltage. Based on the detection results, a control unit in the terminal gun cabinet determines whether the terminal input voltage has reached a target value. According to the determination, the terminal gun cabinet decides whether to notify a control unit in the power supply cabinet to perform voltage compensation until the control unit in the terminal gun cabinet determines that the terminal input voltage has reached the target value.

Claims

1. A charging device that receives an alternating current from a power supply device and charges a vehicle end, the charging device comprising: A power supply cabinet, coupled to the power supply equipment, performs voltage conversion on the AC power transmitted from the power supply equipment to obtain a power supply cabinet output voltage; a first connecting cable, coupled to the power supply cabinet output voltage, and a terminal gun cabinet, coupled to the first connecting cable, the terminal gun cabinet being coupled to and communicating with the power supply cabinet through the first connecting cable; the power supply cabinet supplying a terminal input voltage to the terminal gun cabinet through the first connecting cable; wherein, a detection circuit of the terminal gun cabinet detects the terminal input voltage of the terminal gun cabinet; based on the detection result of the terminal gun cabinet, a control unit of the terminal gun cabinet determines whether the terminal input voltage of the terminal gun cabinet has reached a terminal target value; and based on the determination result of the terminal gun cabinet, the terminal gun cabinet decides whether to notify a control unit of the power supply cabinet to perform voltage compensation until the control unit of the terminal gun cabinet determines that the terminal input voltage of the terminal gun cabinet has reached the terminal target value.

2. The charging device as described in claim 1, wherein, The power supply cabinet includes a first power supply cabinet and a second power supply cabinet, wherein the first power supply cabinet is coupled to the second power supply cabinet via a second connecting cable.

3. The charging device as described in claim 2, wherein, The first power supply cabinet includes: a first voltage converter; a first control unit coupled to the first voltage converter; and a first detection circuit coupled to the first control unit. The first control unit controls the first voltage converter, which converts the AC power from the power supply device into a first output voltage, which is then transmitted to the second power supply cabinet via the second connection cable. The first detection circuit detects an input voltage and an input current flowing through the first power supply cabinet and transmits a detection result to the first control unit. The first control unit communicates with the second power supply cabinet via the second connection cable. The second power supply cabinet also includes: a second voltage converter; a second control unit coupled to the second voltage converter; and a second detection circuit coupled to the second control unit. The second control unit controls the second voltage converter, which converts the first output voltage from the first voltage converter into a second output voltage, which is then transmitted to the terminal receiver cabinet via the first connection cable. The second detection circuit detects an input voltage and an input current flowing through the second power supply cabinet and transmits a detection result to the second control unit. The second control unit communicates with the control unit of the terminal gun cabinet through the first connection cable.

4. The charging device as described in claim 3, wherein, When the detection result of the second detection circuit indicates that the input voltage received by the second power supply cabinet does not meet the required target value of the second power supply cabinet, the second control unit notifies the first control unit, and the first control unit controls the first voltage converter to adjust the first output voltage until the input voltage received by the second power supply cabinet meets the required target value of the second power supply cabinet.

5. The charging device as described in claim 3, wherein, The first voltage converter is an AC-DC voltage converter, and the second voltage converter is a DC-DC voltage converter.

6. The charging device as described in claim 1, wherein, The power supply cabinet includes: a voltage converter, a control unit and a detection circuit, the control unit being coupled to the voltage converter and the detection circuit, the voltage converter of the power supply cabinet performing an AC-DC conversion and a DC-DC conversion, and when the control unit of the terminal gun cabinet sends back an indication that the terminal input voltage does not meet the terminal target value, the control unit of the power supply cabinet controls the voltage converter of the power supply cabinet to adjust the output voltage of the power supply cabinet until the terminal input voltage of the terminal gun cabinet meets the terminal target value.

7. The charging device as described in claim 1, wherein, The control unit of the terminal gun cabinet communicates with the vehicle end to determine the target input voltage required by the vehicle end. The terminal gun cabinet includes at least one gun line. The detection circuit of the terminal gun cabinet detects the terminal input voltage of the terminal gun cabinet. The control unit of the terminal gun cabinet determines whether the terminal input voltage of the terminal gun cabinet reaches the target input voltage required by the vehicle end. In response to the control unit of the terminal gun cabinet determining that the terminal input voltage of the terminal gun cabinet has reached the target input voltage required by the vehicle end, the control unit of the terminal gun cabinet controls the supply of power to the at least one gun line, so that the at least one gun line charges the vehicle end. The control unit of the terminal receiver cabinet continuously communicates with the vehicle end to update the target input voltage required by the vehicle end; and in response to the control unit of the terminal receiver cabinet determining that the terminal input voltage of the terminal receiver cabinet has not reached the target input voltage required by the vehicle end, the control unit of the terminal receiver cabinet communicates with the control unit of the power supply cabinet to request the power supply cabinet to adjust the output voltage of the power supply cabinet until the control unit of the terminal receiver cabinet determines that the terminal input voltage of the terminal receiver cabinet has reached the target input voltage required by the vehicle end.

8. The charging device as described in claim 1, wherein, The terminal cabinet includes multiple charging cables, each of which individually charges multiple vehicle terminals.

9. The charging device as described in claim 1, wherein, The control unit of the terminal gun cabinet individually compensates and controls the individual output voltage and individual output current of a plurality of gun lines according to the individual needs of the vehicle ends. The detection circuit of the terminal gun cabinet and / or a detection circuit of the power supply cabinet monitors a detection result of voltage drop or current loss, so as to compensate a vehicle end target input voltage and / or a vehicle end target input current based on the detection result.

10. The charging device as described in claim 1, wherein, The compensation for the input voltage of the terminal is initiated by the control unit of the terminal's receiver cabinet and transmitted step by step to the control unit of the power supply cabinet.

11. A charging method for receiving an alternating current from a power supply device and charging a vehicle end, the charging method comprising: A power supply cabinet converts the AC power from the power supply equipment into a voltage output voltage. The power supply cabinet supplies a terminal input voltage to a terminal receiver cabinet via a first connecting cable. The terminal receiver cabinet is coupled to and communicates with the power supply cabinet via the first connecting cable. A detection circuit in the terminal receiver cabinet detects the terminal input voltage. Based on the detection result, a control unit of the terminal receiver cabinet determines whether the terminal input voltage has reached a target value. Based on the determination result, the terminal receiver cabinet decides whether to notify a control unit of the power supply cabinet to perform voltage compensation until the control unit of the terminal receiver cabinet determines that the terminal input voltage has reached the target value.

12. The charging method as described in claim 11, wherein, The power supply cabinet includes a first power supply cabinet and a second power supply cabinet, wherein the first power supply cabinet is coupled to the second power supply cabinet via a second connecting cable.

13. The charging method as described in claim 12, wherein, The first power supply cabinet includes: a first voltage converter; a first control unit coupled to the first voltage converter; and a first detection circuit coupled to the first control unit. The first control unit controls the first voltage converter, which converts the AC power from the power supply device into a first output voltage, which is then transmitted to the second power supply cabinet via the second connection cable. The first detection circuit detects an input voltage and an input current flowing through the first power supply cabinet and transmits a detection result to the first control unit. The first control unit communicates with the second power supply cabinet via the second connection cable. The second power supply cabinet also includes: a second voltage converter; a second control unit coupled to the second voltage converter; and a second detection circuit coupled to the second control unit. The second control unit controls the second voltage converter, which converts the first output voltage from the first voltage converter into a second output voltage, which is then transmitted to the terminal receiver cabinet via the first connection cable. The second detection circuit detects an input voltage and an input current flowing through the second power supply cabinet and transmits a detection result to the second control unit. The second control unit communicates with the control unit of the terminal gun cabinet through the first connection cable.

14. The charging method as described in claim 13, wherein, When the detection result of the second detection circuit indicates that the input voltage received by the second power supply cabinet does not meet the required target value of the second power supply cabinet, the second control unit notifies the first control unit, and the first control unit controls the first voltage converter to adjust the first output voltage until the input voltage received by the second power supply cabinet meets the required target value of the second power supply cabinet.

15. The charging method as described in claim 13, wherein, The first voltage converter is an AC-DC voltage converter, and the second voltage converter is a DC-DC voltage converter.

16. The charging method as described in claim 11, wherein, The power supply cabinet includes: a voltage converter, a control unit and a detection circuit, the control unit being coupled to the voltage converter and the detection circuit, the voltage converter of the power supply cabinet performing an AC-DC conversion and a DC-DC conversion, and when the control unit of the terminal gun cabinet sends back an indication that the terminal input voltage does not meet the terminal target value, the control unit of the power supply cabinet controls the voltage converter of the power supply cabinet to adjust the output voltage of the power supply cabinet until the terminal input voltage of the terminal gun cabinet meets the terminal target value.

17. The charging method as described in claim 11, wherein, The control unit of the terminal gun cabinet communicates with the vehicle end to determine the target input voltage required by the vehicle end. The terminal gun cabinet includes at least one gun line. The detection circuit of the terminal gun cabinet detects the terminal input voltage of the terminal gun cabinet. The control unit of the terminal gun cabinet determines whether the terminal input voltage of the terminal gun cabinet reaches the target input voltage required by the vehicle end. In response to the control unit of the terminal gun cabinet determining that the terminal input voltage of the terminal gun cabinet has reached the target input voltage required by the vehicle end, the control unit of the terminal gun cabinet controls the supply of power to the at least one gun line, so that the at least one gun line charges the vehicle end. The control unit of the terminal receiver cabinet continuously communicates with the vehicle end to update the target input voltage required by the vehicle end; and in response to the control unit of the terminal receiver cabinet determining that the terminal input voltage of the terminal receiver cabinet has not reached the target input voltage required by the vehicle end, the control unit of the terminal receiver cabinet communicates with the control unit of the power supply cabinet to request the power supply cabinet to adjust the output voltage of the power supply cabinet until the control unit of the terminal receiver cabinet determines that the terminal input voltage of the terminal receiver cabinet has reached the target input voltage required by the vehicle end.

18. The charging method as described in claim 11, wherein, The terminal cabinet includes multiple charging cables, each of which individually charges multiple vehicle terminals.

19. The charging method as described in claim 11, wherein, The control unit of the terminal gun cabinet individually compensates and controls the individual output voltage and individual output current of a plurality of gun lines according to the individual needs of the vehicle ends. The detection circuit of the terminal gun cabinet and / or a detection circuit of the power supply cabinet monitors a detection result of voltage drop or current loss, so as to compensate a vehicle end target input voltage and / or a vehicle end target input current based on the detection result.

20. The charging method as described in claim 11, wherein, The compensation for the input voltage of the terminal is initiated by the control unit of the terminal's receiver cabinet and transmitted step by step to the control unit of the power supply cabinet.

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