Vehicle-mounted power supply device, electronic device, vehicle, and vehicle system

Abstract

The invention discloses a vehicle-mounted power supply device, an electronic device, a vehicle and a vehicle system. The vehicle-mounted power supply device comprises a power supply module and a control panel, the power supply module is used for supplying power to the control panel, and the control panel is used for timing reserved charging and awakening a battery management system of the power battery to charge when the timing time reaches the reserved time. Unnecessary electric energy consumption can be avoided, and the charging cost of the power battery is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of electric vehicles, and in particular relates to a vehicle-mounted power supply device, an electronic device, a vehicle and a vehicle system. Background Art

[0002] With the continuous development of science and technology, electric vehicles play an increasingly important role in social life. Power batteries are the core components of electric vehicles, providing a power source for electric vehicles to ensure that the performance of electric vehicles is in the best state and improve the convenience and safety of electric vehicles.

[0003] When the power battery is exhausted, it needs to be charged. How to reduce the charging cost of the power battery is an important issue that needs to be solved urgently. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a vehicle-mounted power supply device, an electronic device, a vehicle and a vehicle system, which can avoid unnecessary power consumption and reduce the charging cost of the power battery.

[0005] In a first aspect, the present application provides a vehicle-mounted power supply device, which includes a power supply module and a control board. The power supply module is used to supply power to the control board. The control board is used to perform scheduled charging timing and wake up the battery management system of the power battery for charging when the timing time reaches the scheduled time.

[0006] In a second aspect, the present application provides an electronic device, which includes the above-mentioned vehicle-mounted power supply device.

[0007] In a third aspect, the present application provides a vehicle, the vehicle comprising a power battery and the above-mentioned electronic device, the power battery comprising a battery management system.

[0008] In a fourth aspect, the present application provides a vehicle system, which includes the above-mentioned vehicle.

[0009] The on-board power supply device, electronic device, vehicle and vehicle system provided in the embodiments of the present application perform scheduled charging timing in the control panel instead of in other devices. In this way, when the timing reaches the scheduled time, it is only necessary to wake up the on-board power supply device and the battery management system of the power battery, and the on-board power supply device communicates with the battery management system for charging, and there is no need to wake up other devices. This can avoid unnecessary energy loss and save charging costs.

[0010] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0012] Figure 1 is a schematic diagram of the structure of the vehicle-mounted power supply device provided in an embodiment of the present application;

[0013] Figure 2 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0014] Figure 3 is a schematic structural diagram of a vehicle provided in an embodiment of the present application;

[0015] Figure 4 is a schematic diagram of the structure of a power battery in a vehicle provided in an embodiment of the present application;

[0016] Figure 5 is a structural schematic diagram of a vehicle system provided in an embodiment of the present application;

[0017] Figure 6 is a schematic diagram of the structure of a power supply device of a vehicle system provided in an embodiment of the present application;

[0018] Figure 7 It is a schematic diagram of the structure of a charging gun of a vehicle system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0019] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0020] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one feature. In the description of this application, the meaning of "plurality" is at least two, such as two, three, unless otherwise clearly and specifically defined.

[0022] See also Figure 1 , an on-vehicle power supply device 100 provided in an embodiment of the present application is described in detail below.

[0023] The vehicle-mounted power supply device 100 includes a power supply module 10 and a control board 20, and the power supply module 10 is connected to the control board 20. The vehicle-mounted power supply device 100 is communicatively connected to a battery management system 310 of a power battery 300.

[0024] The power supply module 10 is used to supply power to the control board 20, and the control board 20 is used to perform scheduled charging timing. When the timing time reaches the scheduled time, the vehicle-mounted power supply device 100 communicates with the battery management system 310 of the power battery 300 to wake up the battery management system 310 of the power battery 300, and then charge.

[0025] The reservation time is a time value acquired by the vehicle power supply device 100 , and may be one or more time values.

[0026] The control board 20 also includes a timer 21, which is used to perform scheduled charging timing. When the scheduled time has not arrived, the control board 20 only retains the timer 21 for normal operation, and the remaining components in the control board 20 stop running, or run at a preset power.

[0027] The preset power refers to a very low power value set in advance. The remaining components in the control board 20 operate at the preset power, so that the control board 20 can react quickly to wake up the battery management system 310 of the power battery 300 when the timing time reaches the scheduled time, and quickly wake up to avoid unnecessary power consumption.

[0028] The vehicle-mounted power supply device 100 also includes a power module 30, which is connected to the power supply module 10, and the power supply module 10 supplies power to the power module 30. The power module 30 is connected to the control board 20 in communication, and the control board 20 sends a signal to control the operating state of the power module 30. The input end of the power module 30 is connected to the power supply device, and the other end is connected to the power battery 300. When the timing time reaches the scheduled time, the control board 20 controls the power module 30 to switch to the charging mode. In the charging mode, the power module 30 can obtain the electrical energy in the power supply device and transmit the obtained electrical energy to the power battery 300 for charging.

[0029] When the battery management system 310 of the power battery 300 remains awake, the control board 20 is also used to obtain the first feedback information collected by the battery management system 310. The first feedback information is used to indicate whether the power battery 300 meets the first preset charging condition. When the first feedback information indicates that the power battery 300 meets the first preset charging condition, the power battery 300 can be charged, and the control board 20 controls the power module 30 to switch to the charging mode, so that the power module 30 obtains the electric energy of the power supply device 500 to charge the power battery 300. When the first feedback information indicates that the power battery 300 does not meet the first preset charging condition, the power battery 300 has a fault and cannot be charged.

[0030] The first feedback information includes battery data of the power battery 300 . According to the data of the power battery 300 collected by the battery management system 310 , it can be determined whether the power battery 300 meets the first preset charging condition.

[0031] Among them, the first preset charging condition includes at least one of the following conditions: the remaining power of the power battery 300 does not exceed the first preset power threshold; the on and off conditions of the first relay 313 and the second relay 314 of the power battery 300 are normal; the battery capacity of the power battery 300 is within the first preset capacity range; the internal resistance of the power battery 300 is within the first preset resistance range; the temperature of the power battery 300 is within the first preset temperature range.

[0032] The first preset power threshold is a power value set based on experience, such as 90%. If the remaining power of the power battery 300 exceeds the first preset power threshold, it indicates that the remaining power of the power battery 300 is sufficient to support use and does not need to be charged. If the remaining power of the power battery 300 does not exceed the first preset power threshold, it indicates that the remaining power of the power battery 300 is insufficient and needs to be replenished to prevent insufficient power during use, thereby reducing the use of physical examinations and increasing the risk of accidents.

[0033] The on-off status of the first relay 313 and the second relay 314 of the power battery 300 is normal, indicating that charging is possible.

[0034] The first preset capacity range is a battery capacity range set based on experience, such as 85%-100%. If the battery capacity of the power battery 300 is within the first preset capacity range, it indicates that the power battery 300 is in good health and can be charged; if the battery capacity of the power battery 300 is outside the first preset capacity range, it indicates that the power battery 300 is in poor health and there may be safety hazards in the power battery 300. In order to avoid safety accidents caused by the charging process, it is determined that the power battery 300 cannot be charged in this case.

[0035] The first preset resistance range is a safety range calibrated based on the factory properties of the power battery 300. If the resistance of the power battery 300 is outside the first preset resistance range, it indicates that there may be a safety hazard inside the power battery 300. In order to avoid safety accidents caused by the charging process, it is determined that the power battery 300 cannot be charged in this case.

[0036] The first preset temperature range is a temperature range set based on experience. When the temperature of the power battery 300 is outside the first preset temperature range, it indicates that the power battery 300 may have abnormalities such as thermal runaway. In order to avoid safety accidents caused by the charging process, it is determined that the power battery 300 cannot be charged in this case.

[0037] The vehicle-mounted power supply device 100 also includes a first interface 65 and a second interface 64. The vehicle-mounted power supply device 100 is connected to the power supply device 500 through the first interface 65 and the second interface 64. The control board 20 is also used to obtain the first interface voltage of the first interface 65 and the second interface voltage of the second interface 64, and determine whether the vehicle-mounted power supply device 100 meets the second preset charging condition according to the first interface voltage and the second interface voltage. When the vehicle-mounted power supply device 100 meets the second preset charging condition, the control board 20 controls the power module 30 to switch to the charging mode, and then the power module 30 transmits the power of the power supply device 500 to the power battery 300.

[0038] The second preset charging condition includes at least one of the following conditions: the first interface voltage is within a first preset voltage range; the second interface voltage is within a second preset voltage range.

[0039] Wherein, the first preset voltage range is a voltage range of the national standard;

[0040] The second preset voltage range is a voltage range of national standards.

[0041] The vehicle power supply device 100 also includes a charging control module 40, a first resistor 68 and a first switch 67. The ground interface of the charging control module 40, the first switch 67, the first resistor 68 and the first interface 65 are connected in sequence. When the vehicle power supply device 100 meets the second preset charging condition, the charging control module 40 controls the first switch 67 to close so that the first interface voltage of the first interface 65 changes, and the second feedback information is fed back to the power supply device 500.

[0042] The second feedback information includes a voltage change, which is used to indicate that the vehicle-mounted power supply device 100 meets the second preset charging condition.

[0043] The charging control module 40 is connected to the power supply module 10, and the power supply module 10 supplies power to the charging control module 40. The charging control module 40 is in communication connection with the control board 20. The charging control module 40 is used to detect the first interface voltage of the first interface 65 and the second interface voltage of the second interface 64.

[0044] The charging control module 40 is connected to the power module 30, and the control board 20 is also used to send charging instructions to the charging control module 40. The charging control module 40 controls the power module 30 to switch to the charging mode based on the charging instructions, and then the power module 30 transmits the power energy of the power supply device 500 to the power battery 300.

[0045] The vehicle-mounted power supply device 100 further includes a communication module 50, which is connected to the power supply module 10, and the power supply module 10 supplies power to the communication module 50. The communication module 50 is in communication connection with the control board 20, and the communication module 50 is in communication connection with the battery management system 310 of the power battery 300. When the timing time reaches the scheduled time, the control board 20 controls the communication module 50 to generate and send a wake-up signal to the battery management system 310 of the power battery 300 to wake up the battery management system 310, and after waking up, the battery management system 310 collects battery data of the power battery 300 to generate first feedback information.

[0046] The vehicle-mounted power supply device 100 also includes a first live wire 61, a first neutral wire 62, a first ground wire 63, a second resistor 66 and a first diode 69. The first live wire 61 and the first neutral wire 62 both pass through the power module 30, and the power module 30 is used to control the on and off of the first live wire 61 and the first neutral wire 62. The first live wire 61 and the first neutral wire 62 are used to transfer electrical energy during the charging process. The first diode 69 is located on the connecting line between the first interface 65 and the first resistor 68 and the second resistor 66. One end of the second resistor 66 is connected to the first diode 69, and the other end is connected to the first ground wire 63. The first ground wire 63 is used to protect the entire circuit. The first switch 67, the first resistor 68, the second resistor 66 and the first diode 69 are used to make the first interface voltage within a first preset voltage range.

[0047] See also Figure 2 , an embodiment of the present application provides an electronic device 200.

[0048] The electronic device 200 includes the vehicle-mounted power supply device 100 described above.

[0049] The electronic device 200 also includes a vehicle control system 220 and a vehicle-machine interaction system 210. The vehicle-machine interaction system 210 is used to receive input operations for scheduled charging to determine the scheduled time and send the scheduled time to the vehicle control system 220; after receiving the scheduled time sent by the vehicle-machine interaction system 210, the vehicle control system 220 generates a scheduled charging request based on the scheduled time and sends the scheduled charging request to the vehicle power supply device 100, and the control board 20 in the vehicle power supply device 100 performs scheduled charging timing in the timer 21 based on the scheduled charging request.

[0050] See also Figure 3 , an embodiment of the present application provides a vehicle 400.

[0051] The vehicle 400 includes a power battery 300 and the above-mentioned electronic device 200. The power battery 300 includes a battery management system 310. The battery management system 310 is connected in communication with the vehicle power supply device 100 in the electronic device 200. When the timing time reaches the scheduled time, the battery management system 310 is awakened by the vehicle power supply device 100 and collects battery data of the power battery 300 to generate first feedback information, and then transmits the first feedback information to the vehicle power supply device 100.

[0052] The power battery 300 further includes a first relay 313 and a second relay 314 . When the power battery 300 meets a first preset charging condition, the first relay 313 and the second relay 314 are closed, so that electric energy can flow into the power battery 300 .

[0053] The power battery 300 further includes a second live wire 311 and a second neutral wire 312. The first relay 313 is located on the second live wire 311 and is used to control the on and off of the second live wire 311; the second relay 314 is located on the second neutral wire 312 and is used to control the on and off of the second neutral wire 312. The second live wire 311 and the second neutral wire 312 are used to transmit electric energy.

[0054] See also Figure 4 , an embodiment of the present application provides a vehicle system 1000.

[0055] The vehicle system 1000 includes the above-mentioned vehicle 400 and the power supply device 500. The vehicle system 1000 further includes a charging gun 600, which is used to connect the vehicle 400 and the power supply device 500.

[0056] See also Figure 6The power supply device 500 of the vehicle system 1000 provided in the embodiment of the present application includes a power supply control device 510, a third interface 502 and a fourth interface 501. The power supply device 500 is connected to the vehicle power supply device 100 through the third interface 502 and the fourth interface 501. The power supply control device 510 is used to detect the third interface voltage of the third interface 502 and the fourth interface voltage of the fourth interface 501, and determine whether the power supply device 500 meets the third preset charging condition based on the third interface voltage and the fourth interface voltage.

[0057] The third preset charging condition includes at least one of the following conditions: the third interface voltage is within the third preset voltage range or the fourth preset voltage range; the fourth interface voltage is within the fifth preset voltage range.

[0058] Wherein, the third preset voltage range is a voltage range of the national standard;

[0059] The fourth preset voltage range is a voltage range of the national standard, and the fourth preset voltage range is different from the third preset voltage range;

[0060] Wherein, the fifth preset voltage range is a voltage range of the national standard;

[0061] The power supply control device 510 is used to determine that the vehicle power supply device 100 meets the second preset charging condition when the third interface voltage is within the fourth preset voltage range. When the vehicle power supply device 100 meets the second preset charging condition and the power supply device 500 meets the third preset charging condition, the power supply control device 510 sends a pulse signal through the third interface 502; when the vehicle power supply device 100 does not meet the second preset charging condition, the power supply control device 510 outputs a voltage signal of a preset voltage through the third interface 502.

[0062] The power supply device 500 further includes a third live wire 505, a third neutral wire 506, a second ground wire 507, a third relay 503, a fourth relay 504, a second switch 520, a third resistor 509 and a fourth resistor 508. The power supply control device 510 includes a first port 511 and a second port 512. The power supply device outputs a voltage signal of a preset voltage through the first port 511, and the power supply device outputs a pulse signal through the second port 512. The third relay 503 is located on the third live wire 505 to control the on and off of the third live wire 505; the fourth relay 504 is located on the third neutral wire 506 to control the on and off of the third neutral wire 506. The fourth resistor 508 connects the fourth port with the power supply control device 510. One end of the second switch 520 can be selectively connected to the first port 511 or the second port 512 of the power supply control device 510, and the other end is connected to the third interface 502 through the third resistor 509. When the vehicle power supply device 100 meets the second preset charging condition and the power supply equipment 500 meets the third preset charging condition, the power supply control device 510 controls the second switch 520 to connect the second port 512 and the third interface 502 , and outputs a pulse signal through the third interface 502 .

[0063] See also Figure 7 The charging gun 600 of the vehicle system 1000 provided in the embodiment of the present application is used to connect the power supply device 500 and the vehicle-mounted power supply device 100. The charging gun 600 includes a fourth live wire 601, a fourth neutral wire 602, a third ground wire 603, a fifth interface 605, a sixth interface 606, a seventh interface 607, an eighth interface 608, a third switch 609, a third resistor 509 and a sixth resistor 610. The fifth interface 605 is connected to the third ground wire 603, and the sixth interface 606 is connected to the eighth interface 608. After the fifth resistor 604 and the sixth resistor 610 are connected in series, the other end of the fifth resistor 604 is connected to the third ground wire 603, the other end of the sixth resistor 610 is connected to the seventh interface 607, and the third switch 609 is connected in parallel with the fifth resistor 605.

[0064] After the charging gun 600 is connected to the power supply device 500 and the vehicle power supply device 100, the fourth live wire of the charging gun 600 is connected to the first live wire 61 of the vehicle power supply device 100 and the third live wire 505 of the power supply device 500, the fourth neutral wire of the charging gun 600 is connected to the first neutral wire 62 of the vehicle power supply device 100 and the third neutral wire 506 of the power supply device 500, and the third ground wire of the charging gun 600 is connected to the first ground wire 63 of the vehicle power supply device 100 and the second ground wire 507 of the power supply device 500. The fifth interface of the charging gun 600 is connected to the fourth interface 501 of the power supply device 500, the sixth interface of the charging gun 600 is connected to the third interface 502 of the power supply device 500, the seventh interface of the charging gun 600 is connected to the second interface 64 of the vehicle power supply device 100, and the eighth interface of the charging gun 600 is connected to the first interface 65 of the vehicle power supply device 100.

[0065] When the charging gun 600 is completely connected to the power supply device 500 and the vehicle power supply device 100, the third switch is closed, so that the second interface voltage of the vehicle power supply device 100 is within the second preset voltage range, and charging can be performed. When the charging gun 600 is not completely connected to the power supply device 500 and the vehicle power supply device 100, the third switch is opened, so that the second interface voltage of the vehicle power supply device 100 is outside the second preset voltage range, and charging cannot be performed.

[0066] In the description of this specification, the descriptions with reference to the terms "certain embodiments", "in an example", "exemplarily", etc., mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0067] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A vehicle-mounted power supply device, characterized in that: include: Power supply module; The control board, the power supply module is used to power the control board, and the control board is used to perform scheduled charging timing, and when the timing time reaches the scheduled time, wake up the battery management system of the power battery for charging.

2. The vehicle-mounted power supply device according to claim 1, characterized in that: The control board includes a timer. When the scheduled time is not reached, the components in the control board except the timer stop running or run at a preset power.

3. The vehicle-mounted power supply device according to claim 1, characterized in that: It also includes a power module, the power supply module is used to power the power module, the power module is connected to the power supply device and the power battery, and the control board is also used to control the power module to switch to a charging mode to charge the power battery when the timing time reaches the scheduled time.

4. The vehicle-mounted power supply device according to claim 3, characterized in that: The control board is further used to obtain first feedback information of the battery management system when the battery management system is awakened, and the first feedback information is used to indicate whether the power battery meets a first preset charging condition; If the first feedback information indicates that the power battery meets a first preset charging condition, the power module is controlled to switch to a charging mode to charge the power battery.

5. The vehicle-mounted power supply device according to claim 4, characterized in that: The power battery includes a first relay and a second relay, and the first preset charging condition includes at least one of the following conditions: The remaining power of the power battery does not exceed a first preset power threshold; The on-off status of the first relay and the second relay of the power battery is normal; The battery capacity of the power battery is within a first preset capacity range; The internal resistance of the power battery is within a first preset resistance range; The temperature of the power battery is within a first preset temperature range.

6. The vehicle-mounted power supply device according to claim 3, characterized in that: The control board is further used for obtaining first feedback information of the battery management system when the battery management system is awakened, wherein the first feedback information includes battery data; Determining whether the power battery meets a first preset charging condition based on the battery data; If the power battery meets the first preset charging condition, the power module is controlled to switch to a charging mode to charge the power battery.

7. The vehicle-mounted power supply device according to claim 3, characterized in that: The vehicle-mounted power supply device also includes a first interface and a second interface, and the vehicle-mounted power supply device is connected to the power supply equipment through the first interface and the second interface. The control panel is also used to obtain a first interface voltage of the first interface and a second interface voltage of the second interface, and based on the first interface voltage and the second interface voltage, determine whether the vehicle-mounted power supply device meets a second preset charging condition. If the vehicle-mounted power supply device meets the second preset charging condition, the power module is controlled to switch to a charging mode to charge the power battery.

8. The vehicle-mounted power supply device according to claim 7, characterized in that: The second preset charging condition includes at least one of the following conditions: The first interface voltage is within a first preset voltage range; The second interface voltage is within a second preset voltage range.

9. The vehicle-mounted power supply device according to claim 7, characterized in that: The vehicle-mounted power supply device also includes a charging control module, and the vehicle-mounted power supply device also includes a first resistor and a first switch. The ground interface of the charging control module, the first switch, the first resistor and the first interface are connected in sequence. The charging control module is used to control the first switch to close when the vehicle-mounted power supply device meets the second preset charging condition, so as to feed back second feedback information indicating that the vehicle-mounted power supply device meets the second preset charging condition to the power supply device.

10. The vehicle-mounted power supply device according to claim 9, characterized in that: The vehicle-mounted power supply device further includes a charging control module, which communicates with the control board and is used to detect a first interface voltage of the first interface and a second interface voltage of the second interface.

11. The vehicle-mounted power supply device according to claim 10, characterized in that: The charging control module is connected to the power module, and the control board is also used to send a charging instruction to the charging control module. The charging control module controls the power module to switch to a charging mode based on the charging instruction to charge the power battery.

12. The vehicle-mounted power supply device according to claim 1, characterized in that: It also includes a communication module, the power supply module is used to power the communication module, the communication module is communicatively connected to the control board, the communication module communicates with the battery management system of the power battery, and the control board is also used to send a wake-up signal to the battery management system through the communication module to wake up the battery management system.

13. An electronic device, characterized in that: include: The vehicle-mounted power supply device according to any one of claims 1 to 12.

14. The electronic device according to claim 13, characterized in that: It also includes a vehicle control system and a vehicle-machine interaction system, wherein the vehicle-machine interaction system is used to receive an input operation for making a reservation for charging, so as to determine the reservation time, and send the reservation time to the vehicle control system; The vehicle control system generates a scheduled charging request based on the scheduled time and sends the request to the vehicle-mounted power supply device. The vehicle-mounted power supply device performs the scheduled charging timing based on the scheduled charging request.

15. A vehicle, characterized in that: include: A power battery, the power battery comprising a battery management system; The electronic device according to claim 13 or 14.

16. A vehicle system, characterized in that: include: The vehicle of claim 15.

17. The vehicle system according to claim 16, characterized in that It also includes a power supply device, which includes a power supply control device, a third interface and a fourth interface. The power supply device is connected to the vehicle-mounted power supply device through the third interface and the fourth interface. The power supply control device is used to detect a third interface voltage of the third interface and a fourth interface voltage of the fourth interface, and determine whether the power supply device meets a third preset charging condition based on the third interface voltage and the fourth interface voltage.

18. The vehicle system according to claim 17, characterized in that The third preset charging condition includes at least one of the following conditions: The third interface voltage is within a third preset voltage range or a fourth preset voltage range, and the third preset voltage range is different from the fourth preset voltage range; The fourth interface voltage is within a fifth preset voltage range.

19. The vehicle system according to claim 17 or 18, characterized in that: The third interface of the power supply equipment is connected to the first interface of the vehicle power supply device, and the power supply control device is used to determine that the vehicle power supply device meets the second preset charging condition when the third interface voltage is within a fourth preset voltage range. When the vehicle power supply device meets the second preset charging condition and the power supply equipment meets the third preset charging condition, the power supply control device sends a pulse signal through the third interface; when the vehicle power supply device does not meet the second preset charging condition, the power supply control device outputs a voltage signal of a preset voltage through the third interface.

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