Charging system and charging method of photovoltaic automobile, storage medium and vehicle

Abstract

The invention relates to a charging system and method of a photovoltaic automobile, a storage medium and a vehicle. The charging system of the photovoltaic automobile belongs to the technical field of new energy, and comprises a power battery system which is used for issuing a charging instruction to a photovoltaic charging module when the photovoltaic charging module meets a charging condition and controlling the state of a photovoltaic contactor in the power battery system according to the charging instruction; the photovoltaic charging module is electrically connected with the power battery system and used for receiving a charging instruction issued by the power battery system when the photovoltaic charging module meets the charging condition and controlling the state of a photovoltaic contactor in the photovoltaic charging module according to the charging instruction so as to regulate and control the photovoltaic charging module to charge a power battery of the power battery system; and the photovoltaic charging interface of the photovoltaic charging module is connected to the connecting circuit between the power battery system and the power utilization load module, so that the direct photovoltaic charging of the vehicle can be realized, and the utilization of green energy during the charging of the electric vehicle is further facilitated.

Description

Technical Field

[0001] The present disclosure relates to the field of new energy technology, and in particular to a charging system for a photovoltaic vehicle, a charging method for a photovoltaic vehicle, a storage medium, and a vehicle. Background Art

[0002] Photovoltaic power generation is a technology that converts solar energy into electrical energy, which is green and environmentally friendly. In recent years, fixed photovoltaic power generation has been widely used around the world. However, the application of photovoltaic power generation in automobiles is relatively small. At present, electric vehicles (including pure electric vehicles and hybrid electric vehicles, referred to as electric vehicles in this article) need to be connected to the power grid and parked at a fixed point to charge the power battery. In electric vehicles, photovoltaic modules and photovoltaic controllers need to be added to realize photovoltaic charging. Summary of the invention

[0003] In view of this, the embodiments of the present disclosure are intended to provide a charging system for a photovoltaic vehicle, a charging method for a photovoltaic vehicle, a storage medium, and a vehicle.

[0004] The technical solution of the present disclosure is achieved as follows:

[0005] In a first aspect, the present disclosure provides a charging system for a photovoltaic vehicle.

[0006] The photovoltaic vehicle charging system provided by the embodiment of the present disclosure includes:

[0007] A power battery system, configured to receive a charging request when the photovoltaic charging module meets the charging conditions, issue a charging instruction to the photovoltaic charging module based on the charging request, and control the state of the photovoltaic contactor in the power battery system according to the charging request;

[0008] A photovoltaic charging module is electrically connected to the power battery system, and is used to receive a charging instruction issued by the power battery system when the photovoltaic charging module meets the charging conditions, and control the state of the photovoltaic contactor in the photovoltaic charging module according to the charging instruction, so as to regulate the photovoltaic charging module to charge the power battery of the power battery system;

[0009] The power load module is electrically connected to the power battery system and is used to receive power supply from the power battery system; wherein the photovoltaic charging interface of the photovoltaic charging module is connected to the connection circuit between the power battery system and the power load module.

[0010] In some embodiments, a pre-charging circuit is connected in series in the connection circuit between the power battery system and the power load module; wherein the pre-charging circuit includes a first main positive contactor; the first main positive contactor is connected in series in the connection circuit between the power battery system and the power load module;

[0011] The circuit between the first main positive contactor and the power load module is connected to a photovoltaic fuse circuit; wherein the photovoltaic fuse circuit comprises a first photovoltaic contactor and a fuse connected in series; the first photovoltaic contactor is connected to the positive electrode of the power battery of the power battery system;

[0012] A second main positive contactor is connected in series in the connection circuit between the access point of the first photovoltaic contactor and the power load module.

[0013] In some embodiments, a pre-charging circuit is connected in series in the connection circuit between the power battery system and the power load module; wherein the pre-charging circuit includes a first main positive contactor; the first main positive contactor is connected in series in the connection circuit between the power battery system and the power load module;

[0014] Among them, the circuit between the positive electrode of the power battery of the power battery system and the first main positive contactor is connected to the photovoltaic fuse circuit; wherein the photovoltaic fuse circuit includes a first photovoltaic contactor and a fuse connected in series; the first photovoltaic contactor is connected to the positive electrode of the power battery of the power battery system.

[0015] In some embodiments, the photovoltaic charging module includes a photovoltaic charging interface, a boost module and a photovoltaic panel;

[0016] The photovoltaic charging interface is connected to the boost module, and the boost module is connected to the photovoltaic panel;

[0017] The photovoltaic charging interface has a first connection end and a second connection end; the first connection end of the photovoltaic charging interface is connected to the fuse of the photovoltaic fuse circuit; the second connection end of the photovoltaic charging interface is connected to the negative electrode of the power battery of the power battery system.

[0018] In some embodiments, a second photovoltaic contactor is connected in series in the connection circuit between the photovoltaic charging interface and the boost module;

[0019] Wherein, the pre-charging circuit includes a pre-charging resistor and a pre-charging contactor;

[0020] The pre-charging resistor and the pre-charging contactor are connected in series and then connected in parallel with the first main positive contactor;

[0021] A main negative contactor is connected in series in the circuit between the second connection end of the photovoltaic charging interface and the negative electrode of the power battery.

[0022] In a second aspect, the present disclosure provides a charging method for a photovoltaic vehicle, which is applied to a charging system for a photovoltaic vehicle, wherein the charging system includes a power battery system, a photovoltaic charging module, and a power load module; wherein a photovoltaic charging interface of the photovoltaic charging module is connected to a connection circuit between the power battery system and the power load module;

[0023] The charging method comprises:

[0024] When the photovoltaic charging module meets the charging conditions, the power battery system receives a charging request from the photovoltaic charging module, issues a charging instruction to the photovoltaic charging module based on the charging request, and controls the state of the photovoltaic contactor in the power battery system according to the charging request;

[0025] After receiving the charging instruction sent by the power battery system, the photovoltaic contactor state in the photovoltaic charging module is controlled according to the charging instruction to regulate the photovoltaic charging module to charge the power battery of the power battery system through the photovoltaic charging interface.

[0026] In some embodiments, a pre-charging circuit is connected in series in the connection circuit between the power battery system and the power load module; wherein the pre-charging circuit includes a first main positive contactor; the first main positive contactor is connected in series in the connection circuit between the power battery system and the power load module; wherein the circuit between the first main positive contactor and the power load module is connected to a photovoltaic fuse circuit; wherein the photovoltaic fuse circuit includes a first photovoltaic contactor and a fuse connected in series; the first photovoltaic contactor is connected to the positive pole of the power battery of the power battery system; a second main positive contactor is connected in series in the connection circuit between the access point of the first photovoltaic contactor and the power load module; the photovoltaic charging module includes a photovoltaic charging interface , boost module and photovoltaic panel; the photovoltaic charging interface is connected to the boost module, and the boost module is connected to the photovoltaic panel; the photovoltaic charging interface has a first connection end and a second connection end; the first connection end of the photovoltaic charging interface is connected to the fuse of the photovoltaic fuse circuit; the second connection end of the photovoltaic charging interface is connected to the negative electrode of the power battery of the power battery system; the connection circuit between the photovoltaic charging interface and the boost module is connected in series with a second photovoltaic contactor; wherein the pre-charging circuit includes a pre-charging resistor and a pre-charging contactor; the pre-charging resistor and the pre-charging contactor are connected in series and then connected in parallel with the first main positive contactor; the circuit between the second connection end of the photovoltaic charging interface and the negative electrode of the power battery is connected in series with a main negative contactor;

[0027] The controlling the state of the photovoltaic contactor in the power battery system according to the charging instruction includes:

[0028] If the vehicle is in the OFF gear, the first main positive contactor, the main negative contactor, and the first photovoltaic contactor of the power battery system are closed; or,

[0029] If the vehicle is in the ON gear, the first photovoltaic contactor of the power battery system and the second photovoltaic contactor in the photovoltaic charging module are closed;

[0030] The controlling the state of the photovoltaic contactor in the photovoltaic charging module according to the charging instruction includes:

[0031] If the vehicle is in the OFF position, the second photovoltaic contactor in the photovoltaic charging module is closed; or,

[0032] If the vehicle is in the ON gear, the second main positive contactor is closed.

[0033] In some embodiments, a pre-charging circuit is connected in series in the connection circuit between the power battery system and the power load module; wherein the pre-charging circuit includes a first main positive contactor; the first main positive contactor is connected in series in the connection circuit between the power battery system and the power load module; wherein the circuit between the positive electrode of the power battery of the power battery system and the first main positive contactor is connected to a photovoltaic fuse circuit; wherein the photovoltaic fuse circuit includes a first photovoltaic contactor and a fuse connected in series; the first photovoltaic contactor is connected to the positive electrode of the power battery of the power battery system, and the photovoltaic charging module includes a photovoltaic charging interface, a boost module and a photovoltaic panel; the photovoltaic charging interface The port is connected to the boost module, and the boost module is connected to the photovoltaic panel; the photovoltaic charging interface has a first connection end and a second connection end; the first connection end of the photovoltaic charging interface is connected to the fuse of the photovoltaic fuse circuit; the second connection end of the photovoltaic charging interface is connected to the negative electrode of the power battery of the power battery system, and the connection circuit between the photovoltaic charging interface and the boost module is connected in series with a second photovoltaic contactor; wherein the pre-charging circuit includes a pre-charging resistor and a pre-charging contactor; the pre-charging resistor and the pre-charging contactor are connected in series and connected in parallel with the first main positive contactor; the circuit between the second connection end of the photovoltaic charging interface and the negative electrode of the power battery is connected in series with a main negative contactor;

[0034] The controlling the state of the photovoltaic contactor in the power battery system according to the charging instruction includes:

[0035] If the vehicle is in the OFF position, the main negative contactor and the first photovoltaic contactor of the power battery system are closed; or,

[0036] If the vehicle is in the ON gear, closing the first photovoltaic contactor of the power battery system;

[0037] The controlling the state of the photovoltaic contactor in the photovoltaic charging module according to the charging instruction includes:

[0038] If the vehicle is in the OFF position, the second photovoltaic contactor in the photovoltaic charging module is closed; or,

[0039] If the vehicle is in the ON gear, the second photovoltaic contactor in the photovoltaic charging module is closed.

[0040] In some embodiments, including:

[0041] If the photovoltaic charging module does not meet the charging conditions, if the vehicle is in the OFF gear, the first main positive contactor, the main negative contactor, the first photovoltaic contactor and the second photovoltaic contactor in the photovoltaic charging module of the power battery system are disconnected;

[0042] If the photovoltaic charging module does not meet the charging conditions, if the vehicle is in the ON gear, the first photovoltaic contactor of the power battery system, the second photovoltaic contactor in the photovoltaic charging module and the second main positive contactor are disconnected.

[0043] In some embodiments, including:

[0044] If the photovoltaic charging module does not meet the charging conditions, the main negative contactor of the power battery system, the first photovoltaic contactor and the second photovoltaic contactor in the photovoltaic charging module are disconnected;

[0045] If the vehicle is in the ON gear, the first photovoltaic contactor of the power battery system and the second photovoltaic contactor in the photovoltaic charging module are disconnected.

[0046] In a third aspect, the present disclosure provides a computer-readable storage medium on which a photovoltaic vehicle charging method program is stored. When the photovoltaic vehicle charging method program is executed by a processor, the photovoltaic vehicle charging method described in the first aspect is implemented.

[0047] In a fourth aspect, the present disclosure provides a vehicle, comprising the photovoltaic vehicle charging system described in the first aspect.

[0048] The charging system of a photovoltaic vehicle according to an embodiment of the present disclosure includes: a power battery system, which is used to issue a charging instruction to a photovoltaic charging module when the photovoltaic charging module meets the charging conditions, and control the photovoltaic contactor state in the power battery system according to the charging instruction; a photovoltaic charging module, which is electrically connected to the power battery system, and is used to receive the charging instruction issued by the power battery system when the photovoltaic charging module meets the charging conditions, and control the photovoltaic contactor state in the photovoltaic charging module according to the charging instruction, so as to regulate the photovoltaic charging module to charge the power battery of the power battery system; a power load module, which is electrically connected to the power battery system, and is used to receive the power supply of the power battery system; wherein the photovoltaic charging interface of the photovoltaic charging module is connected to the connection circuit between the power battery system and the power load module. In the present application, a photovoltaic charging module connected to a power battery system is connected to the vehicle, and a charging instruction is sent to the photovoltaic charging module when the photovoltaic charging module meets the charging conditions. When the photovoltaic charging module meets the charging conditions, the photovoltaic charging module receives the charging instruction sent by the power battery system, and controls the photovoltaic contactor state in the power battery system and the photovoltaic contactor state in the photovoltaic charging module according to the charging instruction, so as to regulate the photovoltaic charging module to charge the power battery of the power battery system, thereby realizing direct photovoltaic charging of the vehicle, which is beneficial to the utilization of green energy when charging electric vehicles.

[0049] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description or learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is a schematic diagram of a charging system structure of a photovoltaic vehicle according to an exemplary embodiment;

[0051] Figure 2 The structure of a charging system for a photovoltaic vehicle is shown according to an exemplary embodiment. Figure 1 ;

[0052] Figure 3 The structure of a charging system for a photovoltaic vehicle is shown according to an exemplary embodiment. Figure 2 ;

[0053] Figure 4 is a flow chart of a charging method for a photovoltaic vehicle according to an exemplary embodiment;

[0054] Figure 5 The charging process of a photovoltaic vehicle is shown according to an exemplary embodiment. Figure 1 ;

[0055] Figure 6 The charging process of a photovoltaic vehicle is shown according to an exemplary embodiment. Figure 2 ;

[0056] Figure 7 The charging process of a photovoltaic vehicle is shown according to an exemplary embodiment. Figure 3 ;

[0057] Figure 8 The charging process of a photovoltaic vehicle is shown according to an exemplary embodiment. Figure 4 . DETAILED DESCRIPTION

[0058] Embodiments of the present disclosure are described in detail below, examples of which 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 intended to be used to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0059] Photovoltaic power generation is a technology that converts solar energy into electrical energy, which is green and environmentally friendly. In recent years, fixed photovoltaic power generation has been widely used around the world. However, the application of photovoltaic power generation in automobiles is relatively small. At present, electric vehicles (including pure electric vehicles and hybrid electric vehicles, referred to as electric vehicles in this article) need to be connected to the power grid and parked at a fixed point to charge the power battery. In electric vehicles, photovoltaic modules and photovoltaic controllers need to be added to realize photovoltaic charging.

[0060] In view of the above situation, the present disclosure provides a charging system for a photovoltaic vehicle. Figure 1 FIG. 1 is a schematic diagram of a photovoltaic vehicle charging system structure according to an exemplary embodiment. Figure 1 As shown, the charging system of the photovoltaic vehicle includes:

[0061] The power battery system 01 is used to receive a charging request when the photovoltaic charging module meets the charging conditions, and issue a charging instruction to the photovoltaic charging module based on the charging request, and control the state of the photovoltaic contactor in the power battery system according to the charging request;

[0062] The photovoltaic charging module 02 is electrically connected to the power battery system, and is used to receive a charging instruction issued by the power battery system when the photovoltaic charging module meets the charging conditions, and control the state of the photovoltaic contactor in the photovoltaic charging module according to the charging instruction, so as to regulate the photovoltaic charging module to charge the power battery of the power battery system;

[0063] The power load module 03 is electrically connected to the power battery system and is used to receive power supply from the power battery system; wherein the photovoltaic charging interface of the photovoltaic charging module is connected to the connection circuit between the power battery system and the power load module.

[0064] In this exemplary embodiment, the charging conditions that need to be met when the photovoltaic charging module is charged include the charging preparation state of the photovoltaic charging module and the battery state of the vehicle power battery, etc. For example, the charging preparation state of the photovoltaic charging module may include that the light intensity reaches a predetermined light intensity value, the power generation power of the photovoltaic panel reaches a predetermined power value, etc.

[0065] In this exemplary embodiment, the photovoltaic charging module may send a charging request to the power battery system when the charging condition is met. When the power battery system receives the charging request, it may send a charging instruction to the photovoltaic charging module.

[0066] In this exemplary embodiment, before charging the power battery, if the vehicle is in the OFF gear, the BMS (Battery Management System) of the power battery system is first awakened. After the BMS (Battery Management System) is awakened, if the BMS receives a charging request from the photovoltaic charging module, the photovoltaic contactor state in the power battery system is controlled according to the charging request;

[0067] After receiving the charging instruction sent by the power battery system, the photovoltaic charging module can control the state of the photovoltaic contactor in the photovoltaic charging module according to the charging instruction to regulate the photovoltaic charging module to charge the power battery of the power battery system.

[0068] In this exemplary embodiment, when the power battery is charged by the photovoltaic charging module, the photovoltaic contactor state in the power battery system and the photovoltaic contactor state in the photovoltaic charging module need to cooperate with each other. Under the cooperation of the photovoltaic contactor state in the power battery system and the photovoltaic contactor state in the photovoltaic charging module, the photovoltaic charging module can charge the power battery.

[0069] The charging system of a photovoltaic vehicle according to an embodiment of the present disclosure includes: a power battery system, which is used to issue a charging instruction to a photovoltaic charging module when the photovoltaic charging module meets the charging conditions, and control the photovoltaic contactor state in the power battery system according to the charging instruction; a photovoltaic charging module, which is electrically connected to the power battery system, and is used to receive the charging instruction issued by the power battery system when the photovoltaic charging module meets the charging conditions, and control the photovoltaic contactor state in the photovoltaic charging module according to the charging instruction, so as to regulate the photovoltaic charging module to charge the power battery of the power battery system; a power load module, which is electrically connected to the power battery system, and is used to receive the power supply of the power battery system; wherein the photovoltaic charging interface of the photovoltaic charging module is connected to the connection circuit between the power battery system and the power load module. In the present application, a photovoltaic charging module connected to a power battery system is connected to the vehicle, and a charging instruction is sent to the photovoltaic charging module when the photovoltaic charging module meets the charging conditions. When the photovoltaic charging module meets the charging conditions, the photovoltaic charging module receives the charging instruction sent by the power battery system, and controls the photovoltaic contactor state in the power battery system and the photovoltaic contactor state in the photovoltaic charging module according to the charging instruction, so as to regulate the photovoltaic charging module to charge the power battery of the power battery system, thereby realizing direct photovoltaic charging of the vehicle, which is beneficial to the utilization of green energy when charging electric vehicles.

[0070] In some embodiments, Figure 2 The structure of a charging system for a photovoltaic vehicle is shown according to an exemplary embodiment. Figure 1 .like Figure 2 As shown, a pre-charging circuit is connected in series in the connection circuit between the power battery system and the power load module; wherein the pre-charging circuit includes a first main positive contactor; the first main positive contactor is connected in series in the connection circuit between the power battery system and the power load module;

[0071] The circuit between the first main positive contactor and the power load module is connected to a photovoltaic fuse circuit; wherein the photovoltaic fuse circuit comprises a first photovoltaic contactor and a fuse connected in series; the first photovoltaic contactor is connected to the positive electrode of the power battery of the power battery system;

[0072] A second main positive contactor is connected in series in the connection circuit between the access point of the first photovoltaic contactor and the power load module.

[0073] In this exemplary embodiment, there are two ways to connect the photovoltaic charging module to the power battery system and the power load module. The first one is Figure 2The circuit between the first photovoltaic contactor of the pre-charging circuit and the power load module is connected to the photovoltaic fuse circuit; the photovoltaic charging module is connected between the photovoltaic fuse circuit and the negative electrode of the power battery; wherein the first photovoltaic contactor is connected to the positive electrode of the power battery of the power battery system. In this way, the photovoltaic charging module can be connected between the positive and negative electrodes of the power battery to realize charging of the power battery of the power battery system. wherein the photovoltaic charging module includes Figure 2 The photovoltaic charging interface, the second photovoltaic contactor, the boost module and the photovoltaic panel are shown. When the photovoltaic charging module in the present application is connected to the photovoltaic charging system, the connection method of the photovoltaic fuse circuit and the photovoltaic charging interface is used to improve the access convenience of the photovoltaic charging module and improve the charging safety of the photovoltaic charging module.

[0074] In some embodiments, Figure 3 The structure of a charging system for a photovoltaic vehicle is shown according to an exemplary embodiment. Figure 2 .like Figure 3 As shown, a pre-charging circuit is connected in series in the connection circuit between the power battery system and the power load module; wherein the pre-charging circuit includes a first main positive contactor; the first main positive contactor is connected in series in the connection circuit between the power battery system and the power load module;

[0075] Among them, the circuit between the positive electrode of the power battery of the power battery system and the first main positive contactor is connected to the photovoltaic fuse circuit; wherein the photovoltaic fuse circuit includes a first photovoltaic contactor and a fuse connected in series; the first photovoltaic contactor is connected to the positive electrode of the power battery of the power battery system.

[0076] In this exemplary embodiment, there are two ways to connect the photovoltaic charging module to the power battery system and the power load module. The second one is as follows: Figure 3 The photovoltaic fuse circuit shown is connected between the positive electrode of the power battery of the power battery system and the first main positive contactor. The photovoltaic charging module is connected between the photovoltaic fuse circuit and the negative electrode of the power battery; wherein the first photovoltaic contactor is connected to the positive electrode of the power battery of the power battery system. In this way, the photovoltaic charging module can be connected between the positive and negative electrodes of the power battery to realize charging of the power battery of the power battery system.

[0077] In some embodiments, the photovoltaic charging module includes a photovoltaic charging interface, a boost module and a photovoltaic panel;

[0078] The photovoltaic charging interface is connected to the boost module, and the boost module is connected to the photovoltaic panel;

[0079] The photovoltaic charging interface has a first connection end and a second connection end; the first connection end of the photovoltaic charging interface is connected to the fuse of the photovoltaic fuse circuit; the second connection end of the photovoltaic charging interface is connected to the negative electrode of the power battery of the power battery system.

[0080] In this exemplary embodiment, the photovoltaic panel is used to generate and output electric energy, and the boost module is used to boost the output voltage of the photovoltaic panel to match the charging voltage of the power battery. Among them, the fuse of the photovoltaic fuse circuit is used to protect the photovoltaic charging module connected to the photovoltaic fuse circuit. The photovoltaic fuse circuit is connected to the positive electrode of the power battery, and the first connection end of the photovoltaic charging interface is connected to the fuse of the photovoltaic fuse circuit, so that the first connection end of the photovoltaic charging interface is connected to the positive electrode of the power battery, and the second connection end of the photovoltaic charging interface is connected to the negative electrode of the power battery of the power battery system, so that the two connection ends of the photovoltaic charging interface are respectively connected to the positive and negative electrodes of the power battery, so that the photovoltaic charging module is connected to the positive and negative electrodes of the power battery through the photovoltaic charging interface, and then the photovoltaic charging module is connected to the charging circuit of the power battery. In this application, when the photovoltaic charging module is connected to the photovoltaic charging system, the connection method of the photovoltaic fuse circuit and the photovoltaic charging interface is used to improve the convenience of access to the photovoltaic charging module and improve the charging safety of the photovoltaic charging module.

[0081] In some embodiments, a second photovoltaic contactor is connected in series in the connection circuit between the photovoltaic charging interface and the boost module;

[0082] Wherein, the pre-charging circuit includes a pre-charging resistor and a pre-charging contactor;

[0083] The pre-charging resistor and the pre-charging contactor are connected in series and then connected in parallel with the first main positive contactor;

[0084] A main negative contactor is connected in series in the circuit between the second connection end of the photovoltaic charging interface and the negative electrode of the power battery.

[0085] In this exemplary embodiment, the power load module includes a bus capacitor C, a resistor R 主 , resistor R 被 The power-on process is: first close the first main negative contactor, then close the pre-charge contactor, and then the power battery charges the bus capacitor C. After it is fully charged, close the main positive contactor, and then disconnect the pre-charge contactor, and the electrical components of the vehicle work normally.

[0086] The power-off process is as follows: first disconnect the main positive contactor, then disconnect the main negative contactor, and finally close the discharge switch. The charge in the bus capacitor C passes through the resistor R 主 Discharge (time can be 2s), the power-off process is completed (if R 主 If it is damaged, you need to go through R被 Discharge, the duration can be 5 minutes).

[0087] In the present application, the photovoltaic charging module charges the power battery by regulating the photovoltaic contactor state in the power battery system and the photovoltaic contactor state in the photovoltaic charging module, and the discharge regulation of the power battery to the power load is achieved by regulating the discharge switch in the power load module.

[0088] The present disclosure provides a charging method for a photovoltaic vehicle, which is applied to a charging system for a photovoltaic vehicle, wherein the charging system comprises a power battery system, a photovoltaic charging module and an electric load module; wherein a photovoltaic charging interface of the photovoltaic charging module is connected to a connection circuit between the power battery system and the electric load module;

[0089] Figure 4 FIG. 1 is a flow chart of a method for charging a photovoltaic vehicle according to an exemplary embodiment. Figure 4 As shown, the charging method includes:

[0090] Step 10: When the photovoltaic charging module meets the charging conditions, the power battery system receives a charging request from the photovoltaic charging module, issues a charging instruction to the photovoltaic charging module based on the charging request, and controls the state of the photovoltaic contactor in the power battery system according to the charging request;

[0091] Step 11: After receiving the charging instruction sent by the power battery system, control the state of the photovoltaic contactor in the photovoltaic charging module according to the charging instruction to regulate the photovoltaic charging module to charge the power battery of the power battery system through the photovoltaic charging interface.

[0092] In this exemplary embodiment, the charging conditions that need to be met when the photovoltaic charging module is charged include the charging preparation state of the photovoltaic charging module and the battery state of the vehicle power battery, etc. For example, the charging preparation state of the photovoltaic charging module may include that the light intensity reaches a predetermined light intensity value, the power generation power of the photovoltaic panel reaches a predetermined power value, etc.

[0093] In this exemplary embodiment, the photovoltaic charging module may send a charging request to the power battery system when the charging condition is met. When the power battery system receives the charging request, it may send a charging instruction to the photovoltaic charging module.

[0094] In this exemplary embodiment, before charging the power battery, if the vehicle is in the OFF gear, the BMS (Battery Management System) of the power battery system is first awakened. After the BMS (Battery Management System) is awakened, if the BMS receives a charging request from the photovoltaic charging module, the photovoltaic contactor state in the power battery system is controlled according to the charging request;

[0095] After receiving the charging instruction sent by the power battery system, the photovoltaic charging module can control the state of the photovoltaic contactor in the photovoltaic charging module according to the charging instruction to regulate the photovoltaic charging module to charge the power battery of the power battery system.

[0096] In this exemplary embodiment, when the power battery is charged by the photovoltaic charging module, the photovoltaic contactor state in the power battery system and the photovoltaic contactor state in the photovoltaic charging module need to cooperate with each other. Under the cooperation of the photovoltaic contactor state in the power battery system and the photovoltaic contactor state in the photovoltaic charging module, the photovoltaic charging module can charge the power battery.

[0097] According to the charging method of the photovoltaic vehicle of the embodiment of the present disclosure, the method includes: when the photovoltaic charging module meets the charging conditions, receiving the charging request of the photovoltaic charging module through the power battery system, and issuing a charging instruction to the photovoltaic charging module based on the charging request, and controlling the photovoltaic contactor state in the power battery system according to the charging request; after receiving the charging instruction issued by the power battery system, controlling the photovoltaic contactor state in the photovoltaic charging module according to the charging instruction, so as to regulate the photovoltaic charging module to charge the power battery of the power battery system through the photovoltaic charging interface, so as to realize direct photovoltaic charging of the vehicle, which is beneficial to the utilization of green energy when charging the electric vehicle.

[0098] In some embodiments, a pre-charging circuit is connected in series in the connection circuit between the power battery system and the power load module; wherein the pre-charging circuit includes a first main positive contactor; the first main positive contactor is connected in series in the connection circuit between the power battery system and the power load module; wherein the circuit between the first main positive contactor and the power load module is connected to a photovoltaic fuse circuit; wherein the photovoltaic fuse circuit includes a first photovoltaic contactor and a fuse connected in series; the first photovoltaic contactor is connected to the positive pole of the power battery of the power battery system; a second main positive contactor is connected in series in the connection circuit between the access point of the first photovoltaic contactor and the power load module; the photovoltaic charging module includes a photovoltaic charging interface , boost module and photovoltaic panel; the photovoltaic charging interface is connected to the boost module, and the boost module is connected to the photovoltaic panel; the photovoltaic charging interface has a first connection end and a second connection end; the first connection end of the photovoltaic charging interface is connected to the fuse of the photovoltaic fuse circuit; the second connection end of the photovoltaic charging interface is connected to the negative electrode of the power battery of the power battery system; the connection circuit between the photovoltaic charging interface and the boost module is connected in series with a second photovoltaic contactor; wherein the pre-charging circuit includes a pre-charging resistor and a pre-charging contactor; the pre-charging resistor and the pre-charging contactor are connected in series and then connected in parallel with the first main positive contactor; the circuit between the second connection end of the photovoltaic charging interface and the negative electrode of the power battery is connected in series with a main negative contactor;

[0099] The controlling the state of the photovoltaic contactor in the power battery system according to the charging instruction includes:

[0100] If the vehicle is in the OFF gear, the first main positive contactor, the main negative contactor, and the first photovoltaic contactor of the power battery system are closed; or,

[0101] If the vehicle is in the ON gear, the first photovoltaic contactor of the power battery system and the second photovoltaic contactor in the photovoltaic charging module are closed;

[0102] The controlling the state of the photovoltaic contactor in the photovoltaic charging module according to the charging instruction includes:

[0103] If the vehicle is in the OFF position, the second photovoltaic contactor in the photovoltaic charging module is closed; or,

[0104] If the vehicle is in the ON gear, the second main positive contactor is closed.

[0105] In this exemplary embodiment, the photovoltaic charging module may include an SCU (Service Control Unit). When the photovoltaic contactor state in the photovoltaic charging module is regulated, it can be executed by the SCU. For example, if the photovoltaic charging module does not meet the charging conditions, if the vehicle is in the OFF gear, the first main positive contactor, the main negative contactor, the first photovoltaic contactor and the second photovoltaic contactor in the photovoltaic charging module of the power battery system are disconnected;

[0106] If the photovoltaic charging module does not meet the charging conditions, if the vehicle is in the ON gear, the first photovoltaic contactor of the power battery system, the second photovoltaic contactor in the photovoltaic charging module and the second main positive contactor are disconnected.

[0107] In this exemplary embodiment, when the photovoltaic charging module meets the charging conditions, if the vehicle is in the OFF position at this time, the vehicle key is turned off, the first main positive contactor, the main negative contactor of the power battery system and the second contactor of the vehicle high-voltage PDU are not closed, at this time

[0108] The SCU sends a wake-up signal to the BMS, and the BMS is awakened. Then the SCU sends a charging request signal to the BMS. After receiving the request, the BMS closes the first main positive contactor and the main negative contactor of the power battery system, closes the first photovoltaic contactor, and sends a charging permission instruction to the SCU; the SCU closes the second photovoltaic contactor, and the entire photovoltaic charging circuit is connected, and the photovoltaic system charges the power battery (because the second main positive contactor in the PDU is disconnected, the photovoltaic system only charges the power battery at this time).

[0109] On the contrary, when the photovoltaic charging conditions are not met, the SCU requests the BMS to stop charging, and the second photovoltaic contactor, the first photovoltaic contactor, the first main positive contactor and the main negative contactor of the power battery system are disconnected successively, and the photovoltaic charging ends.

[0110] Among them, when the vehicle is in the OFF position and photovoltaic charging is in progress, the second main positive contactor in the vehicle's high-voltage PDU is disconnected, and the MCU and other electrical appliances are not powered by high voltage. This ensures the safety of all electrical components when the vehicle is in the OFF position and photovoltaic charging is in progress.

[0111] When the vehicle is in the ON position (the vehicle key is turned on, and the first main positive contactor, the main negative contactor of the power battery system and the second main positive contactor of the vehicle high-voltage PDU are closed). When the photovoltaic charging conditions are met, the SCU sends a charging request signal to the BMS. After receiving the charging request, the BMS sends a charging permission response instruction to the SCU, and then the first photovoltaic contactor is closed, and finally the second photovoltaic contactor in the SCU is closed; the entire photovoltaic high-voltage circuit is connected, and the photovoltaic system can be charged.

[0112] On the contrary, when the photovoltaic charging conditions are not met, the SCU sends a stop charging request signal to the BMS and disconnects the second photovoltaic contactor; after receiving the stop charging request signal from the SCU, the BMS disconnects the first photovoltaic contactor and the photovoltaic charging ends.

[0113] Figure 5 The charging process of a photovoltaic vehicle is shown according to an exemplary embodiment. Figure 1 ;like Figure 5 As shown, when the vehicle is in the OFF position, the charging process of the photovoltaic vehicle includes:

[0114] Step 50, determining whether the photovoltaic system charging conditions are met;

[0115] Step 51: If the charging conditions of the photovoltaic system are met, a charging request signal is sent to the BMS;

[0116] Step 52: BMS is awakened;

[0117] Step 53: The SCU sends a charging request signal to the BMS;

[0118] Step 54: Determine whether the BMS receives a charging request;

[0119] Step 55: If the BMS receives a charging request, close the main negative contactor, the first main positive contactor and the first photovoltaic contactor of the power battery system;

[0120] Step 56: Send a charging permission instruction to the SCU;

[0121] Step 57: Determine whether the SCU receives a charging instruction from the BMS;

[0122] Step 58: If a charging instruction is received from the BMS, the second photovoltaic contactor of the photovoltaic charging module is closed;

[0123] Step 59, charging the photovoltaic system;

[0124] Step 60: The photovoltaic system charging condition is not met;

[0125] Step 61: If the charging conditions of the photovoltaic system are not met, the SCU sends a stop charging request signal to the BMS;

[0126] Step 62, disconnecting the second photovoltaic contactor in the photovoltaic charging module;

[0127] Step 63: Determine whether the BMS receives a request from the SCU to stop charging;

[0128] Step 64: When the BMS receives the charging stop request from the SCU, it disconnects the main negative contactor, the first main positive contactor, and the first photovoltaic contactor of the power battery system.

[0129] Figure 6 The charging process of a photovoltaic vehicle is shown according to an exemplary embodiment. Figure 2 .like Figure 6 As shown, when the vehicle is in the ON position, the charging process of the photovoltaic vehicle includes:

[0130] Step 65, determining whether the photovoltaic system charging conditions are met;

[0131] Step 66: If the charging conditions of the photovoltaic system are met, a charging request signal is sent to the BMS;

[0132] Step 67: Determine whether the BMS receives a charging request;

[0133] Step 68: If the BMS receives a charging request, close the first photovoltaic contactor of the power battery system;

[0134] Step 69: Send a charging permission instruction to the SCU;

[0135] Step 70: Determine whether the SCU receives a charging instruction from the BMS;

[0136] Step 71: If a charging instruction is received from the BMS, the second photovoltaic contactor of the photovoltaic charging module is closed;

[0137] Step 72, charging the photovoltaic system;

[0138] Step 73: The photovoltaic system charging condition is not met;

[0139] Step 74: If the charging conditions of the photovoltaic system are not met, the SCU sends a stop charging request signal to the BMS;

[0140] Step 75, disconnecting the second photovoltaic contactor in the photovoltaic charging module;

[0141] Step 76: Determine whether the BMS receives a request from the SCU to stop charging;

[0142] Step 77: When the BMS receives the charging stop request from the SCU, the BMS disconnects the first photovoltaic contactor of the power battery system.

[0143] In some embodiments, a pre-charging circuit is connected in series in the connection circuit between the power battery system and the power load module; wherein the pre-charging circuit includes a first main positive contactor; the first main positive contactor is connected in series in the connection circuit between the power battery system and the power load module; wherein the circuit between the positive electrode of the power battery of the power battery system and the first main positive contactor is connected to a photovoltaic fuse circuit; wherein the photovoltaic fuse circuit includes a first photovoltaic contactor and a fuse connected in series; the first photovoltaic contactor is connected to the positive electrode of the power battery of the power battery system, and the photovoltaic charging module includes a photovoltaic charging interface, a boost module and a photovoltaic panel; the photovoltaic charging interface The port is connected to the boost module, and the boost module is connected to the photovoltaic panel; the photovoltaic charging interface has a first connection end and a second connection end; the first connection end of the photovoltaic charging interface is connected to the fuse of the photovoltaic fuse circuit; the second connection end of the photovoltaic charging interface is connected to the negative electrode of the power battery of the power battery system, and the connection circuit between the photovoltaic charging interface and the boost module is connected in series with a second photovoltaic contactor; wherein the pre-charging circuit includes a pre-charging resistor and a pre-charging contactor; the pre-charging resistor and the pre-charging contactor are connected in series and connected in parallel with the first main positive contactor; the circuit between the second connection end of the photovoltaic charging interface and the negative electrode of the power battery is connected in series with a main negative contactor;

[0144] The controlling the state of the photovoltaic contactor in the power battery system according to the charging instruction includes:

[0145] If the vehicle is in the OFF position, the main negative contactor and the first photovoltaic contactor of the power battery system are closed; or,

[0146] If the vehicle is in the ON gear, closing the first photovoltaic contactor of the power battery system;

[0147] The controlling the state of the photovoltaic contactor in the photovoltaic charging module according to the charging instruction includes:

[0148] If the vehicle is in the OFF position, the second photovoltaic contactor in the photovoltaic charging module is closed; or,

[0149] If the vehicle is in the ON gear, the second photovoltaic contactor in the photovoltaic charging module is closed.

[0150] In this exemplary embodiment, it includes:

[0151] If the photovoltaic charging module does not meet the charging conditions, the main negative contactor of the power battery system, the first photovoltaic contactor and the second photovoltaic contactor in the photovoltaic charging module are disconnected;

[0152] If the vehicle is in the ON gear, the first photovoltaic contactor of the power battery system and the second photovoltaic contactor in the photovoltaic charging module are disconnected.

[0153] In this exemplary embodiment, the vehicle is in the ON gear, and photovoltaic charging can be achieved by only closing the first photovoltaic contactor and the second photovoltaic contactor (at this time, because the electrical components need electricity, the first main positive contactor and the main negative contactor of the power battery system are closed);

[0154] When the vehicle is in the OFF gear, it is only necessary to close the first photovoltaic contactor, the second photovoltaic contactor and the main negative contactor of the power battery system to charge the power battery (at this time, the MCU and other devices do not need electricity, and the first main positive contactor of the power battery system does not need to be closed).

[0155] After the BMS receives the SCU's request to stop charging:

[0156] When the vehicle is in the ON position, it is only necessary to disconnect the first photovoltaic contactor and the second photovoltaic contactor to stop photovoltaic charging (at this time, the MCU and other devices need electricity, and the first main positive contactor and the main negative contactor of the power battery system do not need to be disconnected);

[0157] When the vehicle is in the OFF position, charging can be stopped by simply disconnecting the second photovoltaic contactor, the first photovoltaic contactor and the main negative contactor of the power battery system (at this time, the MCU and other devices do not need electricity, and the first main positive contactor of the power battery system is also not closed).

[0158] The present application charges the entire vehicle through the on-board charging port while photovoltaic charging can serve as an auxiliary charging function. Based on the high-voltage architecture of electric vehicles, the entire vehicle parts are less modified, the layout is convenient, the cost is low, and when the vehicle is in the OFF gear (especially when parked for a long time and unattended), the electrical appliances of the entire vehicle are not in a high-voltage state, which is conducive to ensuring the high-voltage safety of the vehicle.

[0159] Figure 7 The charging process of a photovoltaic vehicle is shown according to an exemplary embodiment. Figure 3 ;like Figure 7 As shown, when the vehicle is in the OFF position, the charging process of the photovoltaic vehicle includes:

[0160] Step 30, determining whether the photovoltaic system charging conditions are met;

[0161] Step 31: If the charging conditions of the photovoltaic system are met, a charging request signal is sent to the BMS;

[0162] Step 32: BMS is awakened;

[0163] Step 33: SCU sends a charging request signal to BMS;

[0164] Step 34: Determine whether the BMS receives a charging request;

[0165] Step 35: If the BMS receives a charging request, close the main negative contactor and the first photovoltaic contactor of the power battery system;

[0166] Step 36: Send a charging permission instruction to the SCU;

[0167] Step 37: Determine whether the SCU receives the charging instruction from the BMS;

[0168] Step 38: If a charging instruction is received from the BMS, the second photovoltaic contactor of the photovoltaic charging module is closed;

[0169] Step 39, charging the photovoltaic system;

[0170] Step 40: The photovoltaic system charging condition is not met;

[0171] Step 41: If the charging conditions of the photovoltaic system are not met, the SCU sends a stop charging request signal to the BMS;

[0172] Step 42, disconnecting the second photovoltaic contactor in the photovoltaic charging module;

[0173] Step 43: determine whether the BMS receives a request from the SCU to stop charging;

[0174] Step 44: When the BMS receives the charging stop request from the SCU, the main negative contactor and the first photovoltaic contactor of the power battery system are disconnected.

[0175] Figure 8 The charging process of a photovoltaic vehicle is shown according to an exemplary embodiment. Figure 4 .like Figure 8 As shown, when the vehicle is in the ON position, the charging process of the photovoltaic vehicle includes:

[0176] Step 80, determining whether the photovoltaic system charging conditions are met;

[0177] Step 81: If the charging conditions of the photovoltaic system are met, a charging request signal is sent to the BMS;

[0178] Step 82: Determine whether the BMS receives a charging request;

[0179] Step 83: If the BMS receives a charging request, close the first photovoltaic contactor of the power battery system;

[0180] Step 84: Send a charging permission instruction to the SCU;

[0181] Step 85: Determine whether the SCU receives a charging instruction from the BMS;

[0182] Step 86: If a charging instruction is received from the BMS, the second photovoltaic contactor of the photovoltaic charging module is closed;

[0183] Step 87, charging the photovoltaic system;

[0184] Step 88: The photovoltaic system charging condition is not met;

[0185] Step 89: If the charging conditions of the photovoltaic system are not met, the SCU sends a stop charging request signal to the BMS;

[0186] Step 90, disconnecting the second photovoltaic contactor in the photovoltaic charging module;

[0187] Step 91: Determine whether the BMS receives a request to stop charging from the SCU;

[0188] Step 92: When the BMS receives a request from the SCU to stop charging, the BMS disconnects the first photovoltaic contactor of the power battery system.

[0189] The present disclosure provides a computer-readable storage medium on which a photovoltaic vehicle charging method program is stored. When the photovoltaic vehicle charging method program is executed by a processor, the photovoltaic vehicle charging method described in the above embodiments is implemented.

[0190] The present disclosure provides a vehicle, including the photovoltaic vehicle charging system described in the above embodiments.

[0191] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then storing it in a computer memory.

[0192] It should be understood that the various parts of the present disclosure can be implemented in hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0193] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does 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.

[0194] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0195] In addition, the terms "first", "second", etc. used in the embodiments of the present disclosure are only used for descriptive purposes and should not be understood as indicating or implying relative importance, or implicitly indicating the number of technical features indicated in the embodiments. Therefore, the features defined by the terms "first", "second", etc. in the embodiments of the present disclosure may explicitly or implicitly indicate that at least one of the features is included in the embodiment. In the description of the present disclosure, the word "multiple" means at least two or two or more, such as two, three, four, etc., unless otherwise clearly and specifically defined in the embodiments.

[0196] In the present disclosure, unless otherwise clearly specified or limited in the embodiments, the terms "installed", "connected", "connected" and "fixed" etc. appearing in the embodiments should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integrated connection. It can be understood that it can also be a mechanical connection, an electrical connection, etc.; of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements, or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific implementation situation.

[0197] In the present disclosure, 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" or "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" or "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.

[0198] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. A photovoltaic vehicle charging system, characterized in that: include: A power battery system, configured to receive a charging request when the photovoltaic charging module meets the charging conditions, issue a charging instruction to the photovoltaic charging module based on the charging request, and control the state of the photovoltaic contactor in the power battery system according to the charging request; The photovoltaic charging module is electrically connected to the power battery system, and is used to receive a charging instruction issued by the power battery system when the photovoltaic charging module meets the charging conditions, and control the state of the photovoltaic contactor in the photovoltaic charging module according to the charging instruction, so as to regulate the photovoltaic charging module to charge the power battery of the power battery system.

2. The photovoltaic vehicle charging system according to claim 1, characterized in that: include: The power load module is electrically connected to the power battery system and is used to receive power supply from the power battery system; wherein the photovoltaic charging interface of the photovoltaic charging module is connected to the connection circuit between the power battery system and the power load module.

3. The photovoltaic vehicle charging system according to claim 2, characterized in that: A pre-charging circuit is connected in series in the connection circuit between the power battery system and the power load module; wherein the pre-charging circuit includes a first main positive contactor; the first main positive contactor is connected in series in the connection circuit between the power battery system and the power load module; The circuit between the first main positive contactor and the power load module is connected to a photovoltaic fuse circuit; wherein the photovoltaic fuse circuit comprises a first photovoltaic contactor and a fuse connected in series; the first photovoltaic contactor is connected to the positive electrode of the power battery of the power battery system; A second main positive contactor is connected in series in the connection circuit between the access point of the first photovoltaic contactor and the power load module.

4. The photovoltaic vehicle charging system according to claim 2, characterized in that: A pre-charging circuit is connected in series in the connection circuit between the power battery system and the power load module; wherein the pre-charging circuit includes a first main positive contactor; the first main positive contactor is connected in series in the connection circuit between the power battery system and the power load module; Among them, the circuit between the positive electrode of the power battery of the power battery system and the first main positive contactor is connected to the photovoltaic fuse circuit; wherein the photovoltaic fuse circuit includes a first photovoltaic contactor and a fuse connected in series; the first photovoltaic contactor is connected to the positive electrode of the power battery of the power battery system.

5. The photovoltaic vehicle charging system according to claim 3 or 4, characterized in that: The photovoltaic charging module includes a photovoltaic charging interface, a boost module and a photovoltaic panel; The photovoltaic charging interface is connected to the boost module, and the boost module is connected to the photovoltaic panel; The photovoltaic charging interface has a first connection end and a second connection end; the first connection end of the photovoltaic charging interface is connected to the fuse of the photovoltaic fuse circuit; the second connection end of the photovoltaic charging interface is connected to the negative electrode of the power battery of the power battery system.

6. The photovoltaic vehicle charging system according to claim 5, characterized in that: The connection circuit between the photovoltaic charging interface and the boost module is connected in series with a second photovoltaic contactor; Wherein, the pre-charging circuit includes a pre-charging resistor and a pre-charging contactor; The pre-charging resistor and the pre-charging contactor are connected in series and then connected in parallel with the first main positive contactor; A main negative contactor is connected in series in the circuit between the second connection end of the photovoltaic charging interface and the negative electrode of the power battery.

7. A method for charging a photovoltaic vehicle, characterized in that: A charging system applied to a photovoltaic vehicle, the charging system comprising a power battery system, a photovoltaic charging module and a power load module; wherein the photovoltaic charging interface of the photovoltaic charging module is connected to a connection circuit between the power battery system and the power load module; The charging method comprises: When the photovoltaic charging module meets the charging conditions, the power battery system receives a charging request from the photovoltaic charging module, issues a charging instruction to the photovoltaic charging module based on the charging request, and controls the state of the photovoltaic contactor in the power battery system according to the charging request; After receiving the charging instruction sent by the power battery system, the photovoltaic contactor state in the photovoltaic charging module is controlled according to the charging instruction to regulate the photovoltaic charging module to charge the power battery of the power battery system through the photovoltaic charging interface.

8. The photovoltaic vehicle charging method according to claim 7, characterized in that: A pre-charging circuit is connected in series in the connection circuit between the power battery system and the power load module; wherein the pre-charging circuit includes a first main positive contactor; the first main positive contactor is connected in series in the connection circuit between the power battery system and the power load module; wherein the circuit between the first main positive contactor and the power load module is connected to a photovoltaic fuse circuit; wherein the photovoltaic fuse circuit includes a first photovoltaic contactor and a fuse connected in series; the first photovoltaic contactor is connected to the positive electrode of the power battery of the power battery system; a second main positive contactor is connected in series in the connection circuit between the access point of the first photovoltaic contactor and the power load module; the photovoltaic charging module includes a photovoltaic charging interface, a boost module block and photovoltaic panel; the photovoltaic charging interface is connected to the boost module, and the boost module is connected to the photovoltaic panel; the photovoltaic charging interface has a first connection end and a second connection end; the first connection end of the photovoltaic charging interface is connected to the fuse of the photovoltaic fuse circuit; the second connection end of the photovoltaic charging interface is connected to the negative electrode of the power battery of the power battery system; the connection circuit between the photovoltaic charging interface and the boost module is connected in series with a second photovoltaic contactor; wherein the pre-charging circuit includes a pre-charging resistor and a pre-charging contactor; the pre-charging resistor and the pre-charging contactor are connected in series and connected in parallel with the first main positive contactor; the circuit between the second connection end of the photovoltaic charging interface and the negative electrode of the power battery is connected in series with a main negative contactor; The controlling the state of the photovoltaic contactor in the power battery system according to the charging instruction includes: If the vehicle is in the OFF gear, the first main positive contactor, the main negative contactor, and the first photovoltaic contactor of the power battery system are closed; or, If the vehicle is in the ON gear, the first photovoltaic contactor of the power battery system and the second photovoltaic contactor in the photovoltaic charging module are closed; The controlling the state of the photovoltaic contactor in the photovoltaic charging module according to the charging instruction includes: If the vehicle is in the OFF position, the second photovoltaic contactor in the photovoltaic charging module is closed; or, If the vehicle is in the ON gear, the second main positive contactor is closed.

9. The photovoltaic vehicle charging method according to claim 7, characterized in that: A pre-charging circuit is connected in series in the connection circuit between the power battery system and the power load module; wherein the pre-charging circuit includes a first main positive contactor; the first main positive contactor is connected in series in the connection circuit between the power battery system and the power load module; wherein the circuit between the positive electrode of the power battery of the power battery system and the first main positive contactor is connected to a photovoltaic fuse circuit; wherein the photovoltaic fuse circuit includes a first photovoltaic contactor and a fuse connected in series; the first photovoltaic contactor is connected to the positive electrode of the power battery of the power battery system, and the photovoltaic charging module includes a photovoltaic charging interface, a boost module and a photovoltaic panel; the photovoltaic charging interface is connected to the The boost module is connected, and the boost module is connected to the photovoltaic panel; the photovoltaic charging interface has a first connection end and a second connection end; the first connection end of the photovoltaic charging interface is connected to the fuse of the photovoltaic fuse circuit; the second connection end of the photovoltaic charging interface is connected to the negative electrode of the power battery of the power battery system, and the connection circuit between the photovoltaic charging interface and the boost module is connected in series with a second photovoltaic contactor; wherein the pre-charging circuit includes a pre-charging resistor and a pre-charging contactor; the pre-charging resistor and the pre-charging contactor are connected in series and connected in parallel with the first main positive contactor; the circuit between the second connection end of the photovoltaic charging interface and the negative electrode of the power battery is connected in series with a main negative contactor; The controlling the state of the photovoltaic contactor in the power battery system according to the charging instruction includes: If the vehicle is in the OFF position, the main negative contactor and the first photovoltaic contactor of the power battery system are closed; or, If the vehicle is in the ON gear, closing the first photovoltaic contactor of the power battery system; The controlling the state of the photovoltaic contactor in the photovoltaic charging module according to the charging instruction includes: If the vehicle is in the OFF position, the second photovoltaic contactor in the photovoltaic charging module is closed; or, If the vehicle is in the ON gear, the second photovoltaic contactor in the photovoltaic charging module is closed.

10. The photovoltaic vehicle charging method according to claim 8, characterized in that: include: If the photovoltaic charging module does not meet the charging conditions, if the vehicle is in the OFF gear, the first main positive contactor, the main negative contactor, the first photovoltaic contactor and the second photovoltaic contactor in the photovoltaic charging module of the power battery system are disconnected; If the photovoltaic charging module does not meet the charging conditions, if the vehicle is in the ON gear, the first photovoltaic contactor of the power battery system, the second photovoltaic contactor in the photovoltaic charging module and the second main positive contactor are disconnected.

11. The photovoltaic vehicle charging method according to claim 9, characterized in that: include: If the photovoltaic charging module does not meet the charging conditions, the main negative contactor of the power battery system, the first photovoltaic contactor and the second photovoltaic contactor in the photovoltaic charging module are disconnected; If the vehicle is in the ON gear, the first photovoltaic contactor of the power battery system and the second photovoltaic contactor in the photovoltaic charging module are disconnected.

12. A computer-readable storage medium, characterized in that: A photovoltaic vehicle charging method program is stored thereon, and when the photovoltaic vehicle charging method program is executed by a processor, the photovoltaic vehicle charging method described in any one of claims 7-11 is implemented.

13. A vehicle, characterized in that: A charging system for a photovoltaic vehicle comprising any one of claims 1-6.

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