Vehicle-mounted photovoltaic charging system, vehicle and vehicle-mounted photovoltaic charging control method

Abstract

The invention provides a vehicle-mounted photovoltaic charging system, a vehicle and a vehicle-mounted photovoltaic charging control method, and relates to the technical field of vehicle-mounted photovoltaic power supply. The vehicle-mounted photovoltaic charging system comprises a roof photovoltaic module, a photovoltaic controller and a low-voltage lithium battery; the photovoltaic controller is connected with a roof photovoltaic assembly and the low-voltage lithium battery, and the photovoltaic controller is further connected with a power battery of the vehicle and used for inputting electric energy generated by the roof photovoltaic assembly to the low-voltage lithium battery in a first charging mode under the illumination condition and outputting the electric energy generated by the roof photovoltaic assembly to the low-voltage lithium battery in a second charging mode. Or inputting to the power battery or supplying power to the vehicle through the second charging mode. According to the invention, the energy utilization efficiency of the vehicle-mounted photovoltaic system can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle-mounted photovoltaic power supply, and in particular to a vehicle-mounted photovoltaic charging system, a vehicle, and a vehicle-mounted photovoltaic charging control method. Background Art

[0002] One of the problems faced by pure electric vehicles is the endurance of the vehicle. In order to improve the endurance of pure electric vehicles, photovoltaic technology can be used to charge the vehicle. Currently, many car models have a photovoltaic roof option, but the photovoltaic systems carried by these vehicles are mostly inefficient.

[0003] On the one hand, there is the problem of irrational utilization of photovoltaic energy. Some existing vehicle models use photovoltaic energy to drive low-power electrical appliances, such as ventilation fans, or to supplement the small batteries on the upper and lower parts of the vehicle under specific circumstances. However, when the sunlight is sufficient, the electricity generated by the photovoltaic system will be higher than the actual use of the load. Similarly, when the small battery is fully charged, the photovoltaic system will be in an inactive state, which leads to low overall utilization efficiency of the system.

[0004] On the other hand, there are also existing technologies that propose to directly charge the vehicle's high-voltage power battery with photovoltaic energy. However, the output power of the photovoltaic system will be affected by light. In the morning, evening and rainy weather, the output power is low and cannot be effectively charged. In addition, when charging the power battery of the entire vehicle, multiple systems of the vehicle are required to work together, such as VCU, BMS, etc. These components consume power when working. When the light intensity is low, the photovoltaic system generates very little electricity, and it is difficult to achieve effective charging of the power battery at this time (the loss is greater than the output). Summary of the invention

[0005] In order to solve the problems existing in the prior art, the embodiments of the present disclosure provide a vehicle-mounted photovoltaic charging system, a vehicle, and a vehicle-mounted photovoltaic charging control method to improve the energy utilization efficiency of the vehicle-mounted photovoltaic system. The technical solution is as follows:

[0006] In a first aspect, a vehicle-mounted photovoltaic charging system is provided, including a roof photovoltaic module, a photovoltaic controller, and a low-voltage lithium battery;

[0007] The photovoltaic controller is connected to the roof photovoltaic assembly and the low-voltage lithium battery, and the photovoltaic controller is also connected to the power battery of the vehicle, and is used to input the electric energy generated by the roof photovoltaic assembly into the low-voltage lithium battery through the first charging mode, or to supply power to the outside through the second charging mode under light conditions;

[0008] The first charging mode is that when the SOC value of the low-voltage lithium battery is lower than the discharge threshold, the photovoltaic controller controls the roof photovoltaic module to generate electricity to charge the low-voltage lithium battery;

[0009] The second charging mode is that when the SOC value of the low-voltage lithium battery is not lower than the discharge threshold, the photovoltaic controller controls the electric energy generated by the roof photovoltaic module and the electric energy in the low-voltage lithium battery to jointly charge the power battery or power the vehicle until the SOC value of the low-voltage lithium battery is lower than the charging threshold and switches to the first charging mode.

[0010] In a second aspect, a vehicle is provided, the vehicle comprising a power battery and a vehicle-mounted photovoltaic charging system provided in the first aspect;

[0011] The vehicle-mounted photovoltaic charging system includes a roof photovoltaic module, a photovoltaic controller, and a low-voltage lithium battery;

[0012] The photovoltaic controller is connected to the roof photovoltaic assembly and the low-voltage lithium battery, and the photovoltaic controller is also connected to the power battery of the vehicle, and is used to input the electric energy generated by the roof photovoltaic assembly into the low-voltage lithium battery through the first charging mode, or to supply power to the outside through the second charging mode under light conditions;

[0013] The first charging mode is that when the SOC value of the low-voltage lithium battery is lower than the discharge threshold, the photovoltaic controller controls the roof photovoltaic module to generate electricity to charge the low-voltage lithium battery;

[0014] The second charging mode is that when the SOC value of the low-voltage lithium battery is not lower than the discharge threshold, the photovoltaic controller controls the electric energy generated by the roof photovoltaic module and the electric energy in the low-voltage lithium battery to jointly charge the power battery or power the vehicle until the SOC value of the low-voltage lithium battery is lower than the charging threshold and switches to the first charging mode.

[0015] In a third aspect, based on a vehicle provided in the second aspect, a vehicle-mounted photovoltaic charging control method is provided, comprising:

[0016] Obtain the light intensity at the roof photovoltaic assembly, and when the light intensity satisfies the output power of the roof photovoltaic assembly to reach the set power threshold, control the roof photovoltaic assembly to generate electric energy to charge the low-voltage lithium battery;

[0017] Obtain the SOC value of the low-voltage lithium battery. When the SOC value of the low-voltage lithium battery is lower than the discharge threshold, continue to control the power generated by the roof photovoltaic module to charge the low-voltage lithium battery.

[0018] When the SOC value of the low-voltage lithium battery is not lower than the discharge threshold, the electric energy generated by the roof photovoltaic module and the electric energy in the low-voltage lithium battery are controlled to charge the vehicle's power battery or power the vehicle together, until the SOC value of the low-voltage lithium battery is lower than the charging threshold, the electric energy generated by the roof photovoltaic module is controlled to charge the low-voltage lithium battery.

[0019] The technical solution provided by the embodiments of the present disclosure brings the following beneficial effects:

[0020] The disclosed embodiments provide a vehicle-mounted photovoltaic charging system, a vehicle, and a vehicle-mounted photovoltaic charging control method, wherein a low-voltage lithium battery is additionally added to store the electric energy generated by the roof photovoltaic assembly. The added low-voltage lithium battery can store the photovoltaic electric energy, and after a certain amount of electric energy is collected, the collected electric energy is supplied to the vehicle power battery or to the vehicle in a one-time and short period of time. On the one hand, the roof photovoltaic assembly can still charge the low-voltage lithium battery at low power, thereby improving energy utilization efficiency. On the other hand, the use of a low-voltage lithium battery can reduce the charging time for charging the vehicle power battery as much as possible, thereby reducing energy loss during the charging process, and further improving energy utilization efficiency.

[0021] Advantages of additional aspects of the present disclosure will be given in part in the following description and in part will become apparent from the following description or will be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 is a structural schematic diagram of a vehicle-mounted photovoltaic charging system provided by an embodiment of the present disclosure;

[0024] Figure 2 It is a schematic diagram of a charging process of a vehicle-mounted photovoltaic charging system provided by an embodiment of the present disclosure;

[0025] Figure 3 It is a schematic diagram of the power-on and power-off process of a vehicle provided by an embodiment of the present disclosure.

[0026] The reference numerals respectively represent: 1. roof photovoltaic module; 2. photovoltaic controller; 21. MPPT module; 22. first DCDC module; 3. low-voltage lithium battery; 31. PBMS module; 4. power battery; 41. power battery management system; 5. second DCDC module; 6. vehicle controller; 7. low-voltage load. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0028] The terms "first", "second", etc. in the specification, claims and drawings of the present disclosure are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0029] The present disclosure first provides a vehicle-mounted photovoltaic charging system, such as Figure 1 As shown, it includes a roof photovoltaic component 1, a photovoltaic controller 2, and a low-voltage lithium battery 3.

[0030] The photovoltaic controller is connected to the roof photovoltaic assembly and the low-voltage lithium battery, and the photovoltaic controller is also connected to the power battery 4 of the vehicle, and is used to input the electric energy generated by the roof photovoltaic assembly into the low-voltage lithium battery through the first charging mode under light conditions, or to supply power to the outside through the second charging mode;

[0031] The first charging mode is that when the SOC value of the low-voltage lithium battery is lower than the discharge threshold, the photovoltaic controller controls the roof photovoltaic module to generate electricity to charge the low-voltage lithium battery;

[0032] The second charging mode is that when the SOC value of the low-voltage lithium battery is not lower than the discharge threshold, the photovoltaic controller controls the electric energy generated by the roof photovoltaic module and the electric energy in the low-voltage lithium battery to jointly charge the power battery or power the vehicle until the SOC value of the low-voltage lithium battery is lower than the charging threshold and switches to the first charging mode.

[0033] The embodiment of the present invention installs photovoltaic modules on the roof to replenish the vehicle in real time through daylight, thereby reducing the number of times the vehicle is charged and saving time. At the same time, the photovoltaic charging system can directly replenish the battery pack of the entire vehicle under light conditions, or supply photovoltaic energy to the vehicle load when the vehicle is in use, thereby reducing the energy consumption of the vehicle's power battery and thus improving the endurance.

[0034] Roof photovoltaic modules are electrical energy production components in photovoltaic systems, including but not limited to crystalline silicon and amorphous silicon solar cell modules.

[0035] The photovoltaic controller includes an MPPT module 21 and a first DCDC module 22, wherein the MPPT (Maximum Power Point Tracking) module is used to output the electric energy generated by the roof photovoltaic assembly, and the first DCDC module is used to convert the low-voltage DC electric energy generated by the roof photovoltaic assembly into high-voltage DC electric energy to match the voltage of the vehicle's power battery.

[0036] In some embodiments, the low-voltage lithium battery is a lithium battery using lithium iron carbonate cells, including a battery module and a communication module (PBMS module 31). In this embodiment, the output voltage of the roof photovoltaic assembly is 35V, the nominal voltage of the low-voltage lithium battery is 48V, the nominal capacity is 30Ah, the nominal energy is 1440Wh, and the battery charging logic is that the charging voltage must be greater than the battery voltage before charging, that is, the output voltage of the roof photovoltaic assembly only needs to be boosted to above 48V in the photovoltaic controller to charge the low-voltage lithium battery.

[0037] In addition, the hardware part of the vehicle photovoltaic charging system also includes wiring harnesses connecting various components, including electrical connection harnesses and communication harnesses. The main function is to connect various components and conduct communication interactions between components.

[0038] In addition, when the vehicle-mounted photovoltaic charging system is used in a vehicle, it also needs to be connected to the vehicle's power battery 4 to charge the power battery with the electricity generated by the roof photovoltaic assembly. The power battery 4 is controlled by a power battery management system 41 (BMS).

[0039] In some embodiments, the vehicle also includes a vehicle controller 6 (VCU), a second DCDC module 5 (distinguished here from the first DCDC module built into the photovoltaic controller, whose main function is to convert high-voltage DC into low-voltage DC for powering the low-voltage load 7 of the vehicle), and a vehicle CAN bus network that is interactively associated with the photovoltaic system.

[0040] like Figure 1 As shown, the roof photovoltaic assembly 1 is connected to the photovoltaic controller 2; the low-voltage lithium battery 3 is also connected to the photovoltaic controller 2; the photovoltaic controller 2 has another interface connected to the power battery 4, the power battery 4 is connected to the second DCDC module 5, and the second DCDC module 5 is connected to the low-voltage load 7. In addition to the relative circuit connection, the photovoltaic system is connected to the vehicle components for communication, wherein the photovoltaic controller 2, the low-voltage lithium battery 3, the power battery 4, and the vehicle controller 6 are all connected to the vehicle CAN bus network to implement information interaction and command transmission between various components.

[0041] Furthermore, the MPPT module 21 in the photovoltaic controller 2 is integrated and communicates with the first DCDC module 22 inside the controller. The photovoltaic controller also communicates and interacts with the PBMS module 31 inside the low-voltage lithium battery, and also communicates with the vehicle controller 6 and the power battery management system 41.

[0042] The operation logic of a vehicle-mounted photovoltaic charging system provided in this embodiment is that the photovoltaic system has two working modes. The first charging mode is that under the condition of light, the electric energy generated by the roof assembly only charges the low-voltage lithium battery, which is the internal output mode; the second charging mode is that when the low-voltage lithium battery SOC is charged to 90% of the power, the photovoltaic controller stops charging the low-voltage lithium battery, and at this time the low-voltage lithium battery outputs its own electric energy to the photovoltaic controller and outputs it to other systems of the vehicle after boosting through the first DCDC module together with the electric energy generated by the roof photovoltaic assembly, which is the discharge mode. In the discharge mode, if the vehicle is in the parking power-off state, the photovoltaic controller will wake up the vehicle VCU through communication control, and the VCU controls the vehicle power battery charging circuit to close, and the photovoltaic controller will rush the electric energy into the power battery. If the vehicle is in the power-on state, the VCU will control the output power of the power battery, and give priority to using the electric energy generated by the photovoltaic system to power the vehicle, and the missing part will be powered by the power battery. When the vehicle is powered on or off, it will first detect whether the photovoltaic system is in external output mode. If it is in external output mode, it will first adjust the photovoltaic system to internal output mode, and then power on and off the vehicle. This will avoid damage to components on the line caused by the photovoltaic controller continuing to output when the vehicle status is switched.

[0043] The on-board photovoltaic charging system provided in this embodiment will control the switching system function according to the ambient light intensity and the vehicle status during actual use, so as to reasonably store and consume the electric energy generated by the roof photovoltaic components, greatly improving the energy efficiency of the photovoltaic system. The system is in an internal standby state only when there is no light or the light intensity does not meet the conditions for generating the set output power. Under other conditions, it will continuously generate electricity to supplement the whole vehicle or reduce the energy consumption of the vehicle's power battery. In addition, this system is a relatively independent system relative to the whole vehicle. When a system component fails, it will not affect other functions of the whole vehicle.

[0044] An embodiment of the present invention further provides a vehicle, the vehicle comprising a power battery and a vehicle-mounted photovoltaic charging system provided in the first aspect;

[0045] The vehicle-mounted photovoltaic charging system includes a roof photovoltaic module, a photovoltaic controller, and a low-voltage lithium battery;

[0046] The photovoltaic controller is connected to the roof photovoltaic assembly and the low-voltage lithium battery, and the photovoltaic controller is also connected to the power battery of the vehicle, and is used to input the electric energy generated by the roof photovoltaic assembly into the low-voltage lithium battery through the first charging mode, or to supply power to the outside through the second charging mode under light conditions;

[0047] The first charging mode is that when the SOC value of the low-voltage lithium battery is lower than the discharge threshold, the photovoltaic controller controls the roof photovoltaic module to generate electricity to charge the low-voltage lithium battery;

[0048] The second charging mode is that when the SOC value of the low-voltage lithium battery is not lower than the discharge threshold, the photovoltaic controller controls the electric energy generated by the roof photovoltaic module and the electric energy in the low-voltage lithium battery to jointly charge the power battery or power the vehicle until the SOC value of the low-voltage lithium battery is lower than the charging threshold and switches to the first charging mode.

[0049] It should be noted that the vehicle provided in the embodiment of the present invention is the same as the implementation method of the vehicle-mounted photovoltaic charging system provided above, and will not be described in detail here.

[0050] The embodiment of the present invention further provides a vehicle-mounted photovoltaic charging control method, such as Figure 2 As shown, including:

[0051] Obtain the light intensity at the roof photovoltaic assembly, and when the light intensity satisfies the output power of the roof photovoltaic assembly to reach the set power threshold, control the roof photovoltaic assembly to generate electric energy to charge the low-voltage lithium battery;

[0052] Obtain the SOC value of the low-voltage lithium battery. When the SOC value of the low-voltage lithium battery is lower than the discharge threshold, continue to control the power generated by the roof photovoltaic module to charge the low-voltage lithium battery.

[0053] When the SOC value of the low-voltage lithium battery is not lower than the discharge threshold, the electric energy generated by the roof photovoltaic module and the electric energy in the low-voltage lithium battery are controlled to charge the vehicle's power battery or power the vehicle together, until the SOC value of the low-voltage lithium battery is lower than the charging threshold, the electric energy generated by the roof photovoltaic module is controlled to charge the low-voltage lithium battery.

[0054] The following combination Figure 2-Figure 3 , respectively introduces the corresponding control logic when the vehicle is in different states.

[0055] When there is natural light and the vehicle is driving, the MPPT module in the photovoltaic controller first detects whether the light intensity condition meets the output requirements. If not, that is, the current light intensity does not meet the output power of the roof photovoltaic component to reach the set power threshold (the power that can meet the low-voltage lithium battery charging), then the output will not start until the electric energy generated by the light intensity meets the output requirements. After the output starts, it will directly enter the first charging mode, that is, the photovoltaic controller starts charging the low-voltage lithium battery.

[0056] When the power of the low-voltage lithium battery reaches 90%, charging stops and switches to the second charging mode. In this mode, the source of the photovoltaic controller's external output power includes the power generated in real time by the roof photovoltaic components and the power output by the low-voltage lithium battery.

[0057] When the vehicle switches from the powered-on state to the parked powered-off state, the VCU will first detect whether the photovoltaic charging system is in the second charging mode, and if so, it will control its mode to switch to the first charging mode. Similarly, when the vehicle switches from the parked powered-off state to the powered-on state, the VCU will first detect whether the photovoltaic system is in the second charging mode, and if so, it will control its mode to switch to the first charging mode.

[0058] When the vehicle is indoors, at night, or under other conditions where the natural light intensity is insufficient, the roof photovoltaic components will not generate electricity, or the electricity generated cannot meet the output setting conditions of the photovoltaic controller. At this time, the photovoltaic system enters standby mode until the environment changes and the light intensity meets the conditions and starts output.

[0059] In the second charging mode, when the vehicle is powered on, the photovoltaic controller sends an external output request communication instruction to the vehicle VCU. The vehicle VCU will adjust the input of the power battery to the second DCDC module according to the power consumption of the vehicle. The missing part is replaced by the output of the photovoltaic controller, and the output of the photovoltaic controller is used first.

[0060] In the second charging mode, when the vehicle is in the parking and power-off state, the vehicle is in the power-off and not enabled state. The photovoltaic controller will send a communication command to wake up the vehicle VCU and send an external output request. When the vehicle VCU is awakened and receives the external output request from the photovoltaic controller, the VCU also sends a command to control the closing of the vehicle's power battery charging circuit. When the charging circuit is closed, the power of the photovoltaic controller will charge the power battery to supplement the vehicle's endurance.

[0061] In the second charging mode, the condition for stopping the discharge of the low-voltage lithium battery is that the low-voltage lithium battery is discharged to less than 20% or the vehicle system requires to stop discharging, at which time it switches to the first charging mode.

[0062] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A vehicle-mounted photovoltaic charging system, characterized in that: Including roof photovoltaic modules, photovoltaic controllers, and low-voltage lithium batteries; The photovoltaic controller is connected to the roof photovoltaic assembly and the low-voltage lithium battery, and the photovoltaic controller is also connected to the power battery of the vehicle, and is used to input the electric energy generated by the roof photovoltaic assembly into the low-voltage lithium battery through the first charging mode, or into the power battery through the second charging mode under light conditions; The first charging mode is that when the SOC value of the low-voltage lithium battery is lower than the discharge threshold, the photovoltaic controller controls the roof photovoltaic module to generate electricity to charge the low-voltage lithium battery; The second charging mode is that when the SOC value of the low-voltage lithium battery is not lower than the discharge threshold, the photovoltaic controller controls the electric energy generated by the roof photovoltaic module and the electric energy in the low-voltage lithium battery to jointly charge the power battery or power the vehicle until the SOC value of the low-voltage lithium battery is lower than the charging threshold and switches to the first charging mode.

2. A vehicle-mounted photovoltaic charging system as claimed in claim 1, characterized in that: The photovoltaic controller includes an MPPT module and a first DCDC module. The MPPT module is used to output the electric energy generated by the roof photovoltaic assembly. The output end of the first DCDC module is connected to the power battery to charge the power battery with the electric energy output by the roof photovoltaic assembly and the low-voltage lithium battery, or to power the vehicle.

3. A vehicle, characterized in that: The vehicle comprises a power battery and a vehicle-mounted photovoltaic charging system according to any one of claims 1 to 2; The vehicle-mounted photovoltaic charging system includes a roof photovoltaic module, a photovoltaic controller, and a low-voltage lithium battery; The photovoltaic controller is connected to the roof photovoltaic assembly and the low-voltage lithium battery, and the photovoltaic controller is also connected to the power battery of the vehicle, and is used to input the electric energy generated by the roof photovoltaic assembly into the low-voltage lithium battery through the first charging mode, or into the power battery through the second charging mode under light conditions; The first charging mode is that when the SOC value of the low-voltage lithium battery is lower than the discharge threshold, the photovoltaic controller controls the roof photovoltaic module to generate electricity to charge the low-voltage lithium battery; The second charging mode is that when the SOC value of the low-voltage lithium battery is not lower than the discharge threshold, the photovoltaic controller controls the electric energy generated by the roof photovoltaic module and the electric energy in the low-voltage lithium battery to jointly charge the power battery or power the vehicle until the SOC value of the low-voltage lithium battery is lower than the charging threshold and switches to the first charging mode.

4. A vehicle as claimed in claim 3, characterized in that: It also includes a second DCDC module, which is connected to the power battery and the low-voltage load of the vehicle.

5. A vehicle as claimed in claim 3, characterized in that: It also includes a vehicle controller, and the vehicle controller, photovoltaic controller, low-voltage lithium battery, and power battery are all connected to the vehicle CAN bus network.

6. A vehicle-mounted photovoltaic charging control method, characterized in that: A vehicle according to any one of claims 3 to 5, comprising: Obtain the light intensity at the roof photovoltaic assembly, and when the light intensity satisfies the output power of the roof photovoltaic assembly to reach the set power threshold, control the roof photovoltaic assembly to generate electric energy to charge the low-voltage lithium battery; Obtain the SOC value of the low-voltage lithium battery. When the SOC value of the low-voltage lithium battery is lower than the discharge threshold, continue to control the power generated by the roof photovoltaic module to charge the low-voltage lithium battery. When the SOC value of the low-voltage lithium battery is not lower than the discharge threshold, the electric energy generated by the roof photovoltaic module and the electric energy in the low-voltage lithium battery are controlled to charge the vehicle's power battery or power the vehicle together, until the SOC value of the low-voltage lithium battery is lower than the charging threshold, the electric energy generated by the roof photovoltaic module is controlled to charge the low-voltage lithium battery.

7. A vehicle-mounted photovoltaic charging control method as claimed in claim 6, characterized in that: The discharge threshold is 90%, and / or the charge threshold is 20%.

8. A vehicle-mounted photovoltaic charging control method as claimed in claim 6, characterized in that: When in the second charging mode and the vehicle is powered on, the photovoltaic controller sends an external output request to the vehicle controller, and the vehicle controller adjusts the output power of the power battery so that the output of the power battery and the output of the photovoltaic controller jointly power the vehicle.

9. A vehicle-mounted photovoltaic charging control method as claimed in claim 6, characterized in that: When in the second charging mode and the vehicle is in a power-off state, the photovoltaic controller sends a communication command to wake up the vehicle controller, and the vehicle controller controls the power battery charging circuit to close, so that the output of the photovoltaic controller charges the power battery.

10. A vehicle-mounted photovoltaic charging control method as claimed in claim 6, characterized in that: When the vehicle switches from a powered-on state to a powered-off state, or from a powered-off state to a powered-on state, the vehicle controller determines whether the vehicle is in the second charging mode, and if so, switches to the first charging mode.

Images