Photovoltaic high-voltage charging system

Abstract

The present application provides a photovoltaic high-voltage charging system, including a photovoltaic charging unit, a power battery unit and a high-voltage distribution unit. The photovoltaic panels and boost components in the photovoltaic charging unit can be used to charge the power batteries in the power battery unit, and the step-down components in the photovoltaic charging unit can be used to power the photovoltaic controller in the photovoltaic charging unit. A high-voltage interlocking circuit is formed by the high-voltage interlocking component in the photovoltaic charging unit and the photovoltaic controller, or a high-voltage interlocking circuit is formed by the high-voltage interlocking component in the photovoltaic charging unit, the high-voltage interlocking component in the power battery unit and the photovoltaic controller, or a high-voltage interlocking circuit is formed by the high-voltage interlocking component in the photovoltaic charging unit, the high-voltage interlocking component in the high-voltage distribution unit and the photovoltaic controller. The photovoltaic controller can detect the on-off of the high-voltage interlocking circuit to ensure vehicle safety during the charging and discharging of the power battery.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a photovoltaic high-voltage charging system. Background Art

[0002] With the development of technology, the charging speed of electric vehicles is getting faster and faster. However, the charging method is relatively simple, requiring the vehicle to drive to the vicinity of the charging pile and use the charging pile for charging.

[0003] To increase the diversity and convenience of charging methods, photovoltaic panels can be used for charging. However, the charging and discharging voltages of the power battery in the vehicle are both high voltages, so vehicle safety must be ensured during the charging and discharging process.

[0004] Therefore, there is an urgent need for a photovoltaic high-voltage charging system that can ensure vehicle safety during the charging and discharging of the power battery. Summary of the Invention

[0005] The embodiments of the present application provide a photovoltaic high-voltage charging system to ensure vehicle safety during the charging and discharging of power batteries.

[0006] In a first aspect, an embodiment of the present application provides a photovoltaic high-voltage charging system, comprising:

[0007] Power battery unit, high-voltage power distribution unit and photovoltaic charging unit;

[0008] The photovoltaic charging unit includes a photovoltaic panel, a boost component, a buck component, and a photovoltaic controller high-voltage interlocking component;

[0009] The photovoltaic panels are respectively connected to the boost component and the buck component, the photovoltaic controller is respectively connected to the buck component and the battery in the vehicle, the boost component is connected to the high-voltage interlocking component in the photovoltaic charging unit; the high-voltage interlocking component in the photovoltaic charging unit and the photovoltaic controller form a high-voltage interlocking loop;

[0010] The high-voltage interlocking assembly in the power battery unit and the high-voltage interlocking assembly in the high-voltage power distribution unit are connected to the high-voltage interlocking assembly in the photovoltaic charging unit.

[0011] In a possible implementation, the high-voltage interlock assembly in the power battery unit is connected to the power battery in the power battery unit;

[0012] The high-voltage interlocking assembly in the high-voltage power distribution unit is connected to the load in the high-voltage power distribution unit.

[0013] In a possible implementation, the high-voltage interlocking assembly in the photovoltaic charging unit includes a first high-voltage interlocking assembly, a second high-voltage interlocking assembly, a third high-voltage interlocking assembly, and a fourth high-voltage interlocking assembly;

[0014] The high-voltage interlocking component in the photovoltaic charging unit and the photovoltaic controller form a high-voltage interlocking loop, including:

[0015] The first low-pressure end of the third high-pressure interlocking assembly is connected to the first low-pressure end of the photovoltaic controller, the second low-pressure end of the third high-pressure interlocking assembly is connected to the first low-pressure end of the first high-pressure interlocking assembly, the second low-pressure end of the first high-pressure interlocking assembly is connected to the first low-pressure end of the second high-pressure interlocking assembly, the second low-pressure end of the second high-pressure interlocking assembly is connected to the first low-pressure end of the fourth high-pressure interlocking assembly, and the second low-pressure end of the fourth high-pressure interlocking assembly is connected to the second low-pressure end of the photovoltaic controller.

[0016] In a possible implementation, the boost component is connected to the high-voltage interlocking component in the photovoltaic charging unit, including:

[0017] The output positive pole of the boost assembly is respectively connected to the first high-voltage end of the first high-voltage interlock assembly and the first high-voltage end of the second high-voltage interlock assembly, and the output negative pole of the boost assembly is respectively connected to the first high-voltage end of the third high-voltage interlock assembly and the first high-voltage end of the fourth high-voltage interlock assembly.

[0018] In a possible implementation, the high-voltage interlock assembly in the power battery unit includes a fifth high-voltage interlock assembly and a sixth high-voltage interlock assembly;

[0019] The high-voltage interlocking assembly in the high-voltage power distribution unit includes a seventh high-voltage interlocking assembly and an eighth high-voltage interlocking assembly;

[0020] The high-voltage interlock assembly in the power battery unit is connected to the power battery in the power battery unit, including:

[0021] The positive electrode of the power battery is connected to the first high-voltage terminal of the fifth high-voltage interlocking assembly, and the negative electrode of the power battery is connected to the first high-voltage terminal of the sixth high-voltage interlocking assembly;

[0022] The high-voltage interlocking assembly in the high-voltage power distribution unit is connected to a load in the high-voltage power distribution unit, including:

[0023] The positive electrode of the load is connected to the first high-voltage terminal of the seventh high-voltage interlocking assembly, and the negative electrode of the load is connected to the first high-voltage terminal of the eighth high-voltage interlocking assembly.

[0024] In a possible implementation, the high-voltage interlocking assembly in the power battery unit and the high-voltage interlocking assembly in the high-voltage power distribution unit are connected to the high-voltage interlocking assembly in the photovoltaic charging unit, including:

[0025] The second high-voltage end of the first high-voltage interlock assembly is connected to the second high-voltage end of the fifth high-voltage interlock assembly, the second high-voltage end of the second high-voltage interlock assembly is connected to the second high-voltage end of the seventh high-voltage interlock assembly, the second high-voltage end of the third high-voltage interlock assembly is connected to the second high-voltage end of the sixth high-voltage interlock assembly, and the second high-voltage end of the fourth high-voltage interlock assembly is connected to the second high-voltage end of the eighth high-voltage interlock assembly.

[0026] In a possible implementation, the photovoltaic high-voltage charging system further includes a switching unit;

[0027] The high-voltage interlocking assembly in the power battery unit and the high-voltage interlocking assembly in the high-voltage power distribution unit are connected to the high-voltage interlocking assembly in the photovoltaic charging unit, including:

[0028] The high-voltage interlocking assembly in the power battery unit and the high-voltage interlocking assembly in the high-voltage power distribution unit are connected to the high-voltage interlocking assembly in the photovoltaic charging unit through the high-voltage interlocking assembly in the adapter unit;

[0029] The high-voltage interlocking component in the photovoltaic charging unit and the photovoltaic controller form a high-voltage interlocking loop, including:

[0030] The high-voltage interlocking component in the photovoltaic charging unit, the high-voltage interlocking component in the switching unit and the photovoltaic controller form a high-voltage interlocking loop; or,

[0031] The high-voltage interlocking component in the photovoltaic charging unit and the photovoltaic controller form a first high-voltage interlocking loop, and the high-voltage interlocking component in the switching unit and the photovoltaic controller form a second high-voltage interlocking loop.

[0032] In a possible implementation, the high-voltage interlocking assembly in the photovoltaic charging unit includes a ninth high-voltage interlocking assembly and a tenth high-voltage interlocking assembly;

[0033] The high-voltage interlocking assembly in the switching unit includes an eleventh high-voltage interlocking assembly, a twelfth high-voltage interlocking assembly, a thirteenth high-voltage interlocking assembly, a fourteenth high-voltage interlocking assembly, a fifteenth high-voltage interlocking assembly, and a sixteenth high-voltage interlocking assembly;

[0034] The high-voltage interlock assembly in the power battery unit includes a seventeenth high-voltage interlock assembly and an eighteenth high-voltage interlock assembly;

[0035] The high-voltage interlocking assembly in the high-voltage power distribution unit includes a nineteenth high-voltage interlocking assembly and a twentieth high-voltage interlocking assembly.

[0036] In one possible implementation, the high-voltage interlocking component in the photovoltaic charging unit, the high-voltage interlocking component in the adapter unit, and the photovoltaic controller form a high-voltage interlocking loop, including:

[0037] The first low-pressure end of the ninth high-voltage interlocking assembly is connected to the first low-pressure end of the photovoltaic controller, the second low-pressure end of the ninth high-voltage interlocking assembly is connected to the first low-pressure end of the eleventh high-voltage interlocking assembly, the second low-pressure end of the eleventh high-voltage interlocking assembly is connected to the first low-pressure end of the sixteenth high-voltage interlocking assembly, the second low-pressure end of the sixteenth high-voltage interlocking assembly is connected to the first low-pressure end of the fifteenth high-voltage interlocking assembly, the second low-pressure end of the fifteenth high-voltage interlocking assembly is connected to the first low-pressure end of the fourteenth high-voltage interlocking assembly, the second low-pressure end of the fourteenth high-voltage interlocking assembly is connected to the first low-pressure end of the thirteenth high-voltage interlocking assembly, the second low-pressure end of the thirteenth high-voltage interlocking assembly is connected to the first low-pressure end of the twelfth high-voltage interlocking assembly, the second low-pressure end of the twelfth high-voltage interlocking assembly is connected to the first low-pressure end of the tenth high-voltage interlocking assembly, and the second low-pressure end of the tenth high-voltage interlocking assembly is connected to the second low-pressure end of the photovoltaic controller.

[0038] In one possible implementation, the high-voltage interlocking component in the photovoltaic charging unit and the photovoltaic controller form a first high-voltage interlocking loop, including:

[0039] The first low-voltage end of the ninth high-voltage interlocking assembly is connected to the first low-voltage end of the photovoltaic controller, the second low-voltage end of the ninth high-voltage interlocking assembly is connected to the first low-voltage end of the tenth high-voltage interlocking assembly, and the second low-voltage end of the tenth high-voltage interlocking assembly is connected to the second low-voltage end of the photovoltaic controller;

[0040] The high-voltage interlocking component in the switching unit and the photovoltaic controller form a second high-voltage interlocking loop, including:

[0041] The first low-pressure end of the twelfth high-pressure interlocking assembly is connected to the first low-pressure end of the photovoltaic controller, the second low-pressure end of the twelfth high-pressure interlocking assembly is connected to the first low-pressure end of the eleventh high-pressure interlocking assembly, the second low-pressure end of the eleventh high-pressure interlocking assembly is connected to the first low-pressure end of the sixteenth high-pressure interlocking assembly, the second low-pressure end of the sixteenth high-pressure interlocking assembly is connected to the first low-pressure end of the fifteenth high-pressure interlocking assembly, the second low-pressure end of the fifteenth high-pressure interlocking assembly is connected to the first low-pressure end of the fourteenth high-pressure interlocking assembly, the second low-pressure end of the fourteenth high-pressure interlocking assembly is connected to the first low-pressure end of the thirteenth high-pressure interlocking assembly, and the second low-pressure end of the thirteenth high-pressure interlocking assembly is connected to the second low-pressure end of the photovoltaic controller.

[0042] In a possible implementation, the boost component is connected to the high-voltage interlocking component in the photovoltaic charging unit, including:

[0043] The output positive electrode of the boost assembly is connected to the first high-voltage end of the ninth high-voltage interlock assembly, and the output negative electrode of the boost assembly is connected to the first high-voltage end of the tenth high-voltage interlock assembly.

[0044] In one possible implementation, the high-voltage interlock assembly in the power battery unit is connected to the power battery in the power battery unit, including:

[0045] The positive electrode of the power battery is connected to the first high-voltage terminal of the eighteenth high-voltage interlocking assembly, and the negative electrode of the power battery is connected to the first high-voltage terminal of the seventeenth high-voltage interlocking assembly;

[0046] The high-voltage interlocking assembly in the high-voltage power distribution unit is connected to a load in the high-voltage power distribution unit, including:

[0047] The positive electrode of the load is connected to the first high voltage terminal of the nineteenth high voltage interlocking assembly, and the negative electrode of the load is connected to the first high voltage terminal of the twentieth high voltage interlocking assembly.

[0048] In one possible implementation, the high-voltage interlocking assembly in the power battery unit and the high-voltage interlocking assembly in the high-voltage distribution unit are connected to the high-voltage interlocking assembly in the photovoltaic charging unit via the high-voltage interlocking assembly in the adapter unit, including:

[0049] The second high-voltage end of the fifteenth high-voltage interlock assembly is connected to the second high-voltage end of the eighteenth high-voltage interlock assembly, the second high-voltage end of the sixteenth high-voltage interlock assembly is connected to the second high-voltage end of the seventeenth high-voltage interlock assembly, the second high-voltage end of the thirteenth high-voltage interlock assembly is connected to the second high-voltage end of the twentieth high-voltage interlock assembly, and the second high-voltage end of the fourteenth high-voltage interlock assembly is connected to the second high-voltage end of the nineteenth high-voltage interlock assembly;

[0050] The second high-voltage end of the eleventh high-voltage interlock assembly is connected to the second high-voltage end of the ninth high-voltage interlock assembly, and the second high-voltage end of the twelfth high-voltage interlock assembly is connected to the second high-voltage end of the tenth high-voltage interlock assembly;

[0051] The first high-voltage end of the eleventh high-voltage interlocking assembly is respectively connected to the first high-voltage end of the fourteenth high-voltage interlocking assembly and the first high-voltage end of the fifteenth high-voltage interlocking assembly, and the first high-voltage end of the twelfth high-voltage interlocking assembly is respectively connected to the first high-voltage end of the thirteenth high-voltage interlocking assembly and the first high-voltage end of the sixteenth high-voltage interlocking assembly.

[0052] In a second aspect, an embodiment of the present application provides a photovoltaic high-voltage charging system, comprising:

[0053] Power battery unit and photovoltaic charging unit;

[0054] The photovoltaic charging unit includes a photovoltaic panel, a boost component, a buck component, a photovoltaic controller and a high-voltage interlocking component;

[0055] The photovoltaic panels are connected to the boost assembly and the buck assembly respectively, the photovoltaic controller is connected to the buck assembly and the battery in the vehicle respectively, and the boost assembly is connected to the high-voltage interlocking assembly in the photovoltaic charging unit;

[0056] The high-voltage interlocking component in the power battery unit is connected to the high-voltage interlocking component in the photovoltaic charging unit, and the high-voltage interlocking component in the power battery unit, the high-voltage interlocking component in the photovoltaic charging unit and the photovoltaic controller form a high-voltage interlocking loop.

[0057] In a possible implementation manner, the high-voltage interlock assembly in the power battery unit is connected to the power battery in the power battery unit.

[0058] In a possible implementation, the high-voltage interlocking assembly in the photovoltaic charging unit includes a twenty-first high-voltage interlocking assembly and a twenty-second high-voltage interlocking assembly;

[0059] The high-voltage interlock assembly in the power battery unit includes a twenty-third high-voltage interlock assembly and a twenty-fourth high-voltage interlock assembly;

[0060] The high-voltage interlocking component in the power battery unit, the high-voltage interlocking component in the photovoltaic charging unit, and the photovoltaic controller form a high-voltage interlocking loop, including:

[0061] The first low-voltage end of the 24th high-voltage interlocking assembly is connected to the first low-voltage end of the photovoltaic controller, the second low-voltage end of the 24th high-voltage interlocking assembly is connected to the first low-voltage end of the 23rd high-voltage interlocking assembly, the second low-voltage end of the 23rd high-voltage interlocking assembly is connected to the first low-voltage end of the 21st high-voltage interlocking assembly, the second low-voltage end of the 21st high-voltage interlocking assembly is connected to the first low-voltage end of the 22nd high-voltage interlocking assembly, and the second low-voltage end of the 22nd high-voltage interlocking assembly is connected to the second low-voltage end of the photovoltaic controller.

[0062] In a possible implementation, the boost component is connected to the high-voltage interlocking component in the photovoltaic charging unit, including:

[0063] The output positive pole of the boost assembly is connected to the first high-voltage end of the twenty-first high-voltage interlock assembly, and the output negative pole of the boost assembly is connected to the first high-voltage end of the twenty-second high-voltage interlock assembly.

[0064] In one possible implementation, the high-voltage interlock assembly in the power battery unit is connected to the power battery in the power battery unit, including:

[0065] The positive electrode of the power battery is connected to the first high-voltage terminal of the twenty-third high-voltage interlocking assembly, and the negative electrode of the power battery is connected to the first high-voltage terminal of the twenty-fourth high-voltage interlocking assembly.

[0066] In a possible implementation, the high-voltage interlocking assembly in the power battery unit is connected to the high-voltage interlocking assembly in the photovoltaic charging unit, including:

[0067] The second high-voltage end of the 23rd high-voltage interlock assembly is connected to the second high-voltage end of the 21st high-voltage interlock assembly, and the second high-voltage end of the 24th high-voltage interlock assembly is connected to the second high-voltage end of the 22nd high-voltage interlock assembly.

[0068] In a third aspect, an embodiment of the present application provides a photovoltaic high-voltage charging system, comprising:

[0069] Power battery unit, high-voltage power distribution unit and photovoltaic charging unit;

[0070] The photovoltaic charging unit includes a photovoltaic panel, a boost component, a buck component, a photovoltaic controller and a high-voltage interlocking component;

[0071] The photovoltaic panels are connected to the boost assembly and the buck assembly respectively, the photovoltaic controller is connected to the buck assembly and the battery in the vehicle respectively, and the boost assembly is connected to the high-voltage interlocking assembly in the photovoltaic charging unit;

[0072] The high-voltage interlocking assembly in the power battery unit is connected to the high-voltage interlocking assembly in the high-voltage power distribution unit;

[0073] The high-voltage interlocking component in the high-voltage power distribution unit is connected to the high-voltage interlocking component in the photovoltaic charging unit;

[0074] The high-voltage interlocking component in the high-voltage power distribution unit, the high-voltage interlocking component in the photovoltaic charging unit and the photovoltaic controller form a high-voltage interlocking loop.

[0075] In a possible implementation, the high-voltage interlock assembly in the power battery unit is connected to the power battery in the power battery unit;

[0076] The high-voltage interlocking assembly in the high-voltage power distribution unit is connected to the load in the high-voltage power distribution unit.

[0077] In a possible implementation manner, the high-voltage interlocking assembly in the photovoltaic charging unit includes a twenty-fifth high-voltage interlocking assembly and a twenty-sixth high-voltage interlocking assembly;

[0078] The high-voltage interlocking assembly in the high-voltage power distribution unit includes a twenty-seventh high-voltage interlocking assembly, a twenty-eighth high-voltage interlocking assembly, a twenty-ninth high-voltage interlocking assembly, and a thirtieth high-voltage interlocking assembly;

[0079] The high-voltage interlocking component in the high-voltage power distribution unit, the high-voltage interlocking component in the photovoltaic charging unit, and the photovoltaic controller form a high-voltage interlocking circuit, including:

[0080] The first low-voltage end of the twenty-eighth high-voltage interlocking assembly is connected to the first low-voltage end of the photovoltaic controller, the second low-voltage end of the twenty-eighth high-voltage interlocking assembly is connected to the first low-voltage end of the twenty-seventh high-voltage interlocking assembly, the second low-voltage end of the twenty-seventh high-voltage interlocking assembly is connected to the first low-voltage end of the twenty-fifth high-voltage interlocking assembly, the second low-voltage end of the twenty-fifth high-voltage interlocking assembly is connected to the first low-voltage end of the twenty-sixth high-voltage interlocking assembly, and the second low-voltage end of the twenty-sixth high-voltage interlocking assembly is connected to the second low-voltage end of the photovoltaic controller.

[0081] In a possible implementation, the boost component is connected to the high-voltage interlocking component in the photovoltaic charging unit, including:

[0082] The output positive pole of the boost assembly is connected to the first high-voltage end of the twenty-fifth high-voltage interlock assembly, and the output negative pole of the boost assembly is connected to the first high-voltage end of the twenty-sixth high-voltage interlock assembly.

[0083] In a possible implementation manner, the high-voltage interlock assembly in the power battery unit includes a thirty-first high-voltage interlock assembly and a thirty-second high-voltage interlock assembly;

[0084] The high-voltage interlocking assembly in the power battery unit is connected to the high-voltage interlocking assembly in the high-voltage power distribution unit, including:

[0085] The second high-voltage end of the thirty-first high-voltage interlock assembly is connected to the second high-voltage end of the thirtieth high-voltage interlock assembly, and the second high-voltage end of the thirty-second high-voltage interlock assembly is connected to the second high-voltage end of the twenty-ninth high-voltage interlock assembly;

[0086] The high-voltage interlock assembly in the power battery unit is connected to the power battery in the power battery unit, including:

[0087] The positive electrode of the power battery is connected to the first high-voltage terminal of the thirty-first high-voltage interlocking assembly, and the negative electrode of the power battery is connected to the first high-voltage terminal of the thirty-second high-voltage interlocking assembly.

[0088] In a possible implementation, the high-voltage interlocking component in the high-voltage distribution unit is connected to the high-voltage interlocking component in the photovoltaic charging unit, including:

[0089] The first high-voltage end of the twenty-seventh high-voltage interlock assembly is connected to the first high-voltage end of the twenty-fifth high-voltage interlock assembly, and the first high-voltage end of the twenty-eighth high-voltage interlock assembly is connected to the first high-voltage end of the twenty-sixth high-voltage interlock assembly;

[0090] The second high-voltage end of the twenty-seventh high-voltage interlock assembly is connected to the second high-voltage end of the thirtieth high-voltage interlock assembly, and the second high-voltage end of the twenty-eighth high-voltage interlock assembly is connected to the second high-voltage end of the twenty-ninth high-voltage interlock assembly;

[0091] The high-voltage interlocking assembly in the high-voltage power distribution unit is connected to a load in the high-voltage power distribution unit, including:

[0092] The second high-voltage end of the twenty-seventh high-voltage interlocking assembly is connected to the positive electrode of the load, and the second high-voltage end of the twenty-eighth high-voltage interlocking assembly is connected to the negative electrode of the load.

[0093] The photovoltaic high-voltage charging system provided in the embodiment of the present application can charge the power battery in the power battery unit through the photovoltaic panel and the boost component in the photovoltaic charging unit, and can power the photovoltaic controller in the photovoltaic charging unit through the buck component in the photovoltaic charging unit. Furthermore, a high-voltage interlocking circuit is formed by the high-voltage interlocking component in the photovoltaic charging unit and the photovoltaic controller, or the high-voltage interlocking component in the photovoltaic charging unit, the high-voltage interlocking component in the power battery unit and the photovoltaic controller, or the high-voltage interlocking component in the photovoltaic charging unit, the high-voltage interlocking component in the high-voltage distribution unit and the photovoltaic controller. The photovoltaic controller can detect the on-off of the high-voltage interlocking circuit to ensure vehicle safety during the charging and discharging of the power battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0094] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0095] Figure 1 A schematic diagram of the vehicle electrical architecture in the prior art provided by this application;

[0096] Figure 2 Schematic diagram of the photovoltaic high-voltage charging system provided in this application Figure 1 ;

[0097] Figure 3 A schematic diagram of a high voltage interlock assembly provided for this application;

[0098] Figure 4 Schematic diagram of the photovoltaic high-voltage charging system provided in this application Figure 2 ;

[0099] Figure 5 Schematic diagram of the photovoltaic high-voltage charging system provided in this application Figure 3 ;

[0100] Figure 6 Schematic diagram of the photovoltaic high-voltage charging system provided in this application Figure 4 ;

[0101] Figure 7 Schematic diagram of the photovoltaic high-voltage charging system provided in this application Figure 5 ;

[0102] Figure 8 Schematic diagram of the photovoltaic high-voltage charging system provided in this application Figure 6 .

[0103] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0104] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0105] The terms "first," "second," "third," "fourth," and so forth (if any) in the specification and claims of this application and in the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the application described herein can be implemented in orders other than those illustrated or described herein. 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 apparatus comprising a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or apparatus.

[0106] With the development of technology, the charging speed of electric vehicles is getting faster and faster, but the vehicles still need to be parked near charging piles and charged using charging piles.

[0107] To increase the diversity and convenience of charging methods, photovoltaic panels can be used for charging. However, the charging and discharging voltages of the power battery in the vehicle are both high voltages, so vehicle safety must be ensured during the charging and discharging process.

[0108] For example, Figure 1 This is a schematic diagram of the vehicle electrical architecture in the prior art provided by this application, such as Figure 1 As shown, the vehicle includes a power battery unit and a high-voltage power distribution unit (PDU). The power battery unit includes a power battery, and the high-voltage power distribution unit includes a load. The power battery outputs high voltage electricity to supply power to the load.

[0109] If photovoltaic panels are used for charging, the power battery and the photovoltaic panels will be connected. Since the charging voltage and discharge voltage of the power battery are both high voltages, if the connection is disconnected, it will affect the safety of the vehicle. Therefore, there is an urgent need for a photovoltaic high-voltage charging system that can ensure vehicle safety during the charging and discharging process of the power battery.

[0110] In response to the problems existing in the prior art, the inventors discovered during their research on photovoltaic high-voltage charging systems that in order to convert the low-voltage electricity generated by photovoltaic panels into high-voltage electricity to charge the power battery, a boost component must be connected to the photovoltaic panels. Furthermore, to ensure vehicle safety, a high-voltage interlocking component is connected to the power battery. This high-voltage interlocking component forms a high-voltage interlocking circuit with the photovoltaic controller. When the photovoltaic controller detects that the high-voltage interlocking circuit is disconnected, it can control the vehicle to improve vehicle safety. Based on the above inventive concept, the photovoltaic high-voltage charging system of this application was designed.

[0111] The technical solution of the present application is described in detail below through specific embodiments. It should be noted that the following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0112] Figure 2 Schematic diagram of the photovoltaic high-voltage charging system provided in this application Figure 1 , the embodiment of the present application describes a photovoltaic high-voltage charging system in which a power battery unit and a high-voltage distribution unit are respectively connected to a photovoltaic charging unit.

[0113] like Figure 2 As shown, the photovoltaic high-voltage charging system includes: a power battery unit 201, a high-voltage power distribution unit 202 and a photovoltaic charging unit 203.

[0114] The photovoltaic charging unit 203 includes a photovoltaic panel 204, a voltage-boosting component 205, a voltage-reducing component 206, a photovoltaic controller 207 and a high-voltage interlocking component.

[0115] It should be noted that the boost component and the buck component may be direct current-direct current (DC-DC) converters.

[0116] For example, Figure 3 A schematic diagram of a high voltage interlock assembly provided for this application is shown in FIG. Figure 3 As shown, the high-voltage interlock assembly includes a first low-pressure end 301, a second low-pressure end 302, a first high-pressure end 303, and a second high-pressure end 304. The first low-pressure end 301 is in communication with the second low-pressure end 302, and the first high-pressure end 303 is in communication with the second high-pressure end 304.

[0117] Specifically, the high-voltage interlock assembly includes a socket 305 and a plug 306. The socket 305 includes a first low-voltage terminal 301, a second low-voltage terminal 302, and a first high-voltage terminal 303. The plug includes a low-voltage communication component 307 and a second high-voltage terminal 304. The low-voltage communication component 307 has two terminals, which plug into the first low-voltage terminal 301 and the second low-voltage terminal 302, respectively, so that the first low-voltage terminal 301 and the second low-voltage terminal 302 are in communication. The first high-voltage terminal 303 and the second high-voltage terminal 304 are plugged into each other, so that the first high-voltage terminal 303 and the second high-voltage terminal 304 are in communication.

[0118] The high-voltage interlocking assembly in the photovoltaic charging unit 203 includes a first high-voltage interlocking assembly 208 , a second high-voltage interlocking assembly 209 , a third high-voltage interlocking assembly 210 and a fourth high-voltage interlocking assembly 211 .

[0119] The photovoltaic panel 204 is connected to the boost component 205 and the buck component 206 respectively, that is, the output positive pole of the photovoltaic panel 204 is connected to the input positive pole of the boost component 205 and the input positive pole of the buck component 206 respectively, and the output negative pole of the photovoltaic panel 204 is connected to the input negative pole of the boost component 205 and the input negative pole of the buck component 206 respectively.

[0120] The photovoltaic controller 207 is connected to the step-down component 206 and the battery in the vehicle respectively, that is, the positive pole of the photovoltaic controller 207 is connected to the output positive pole of the step-down component 206 and the positive pole of the battery respectively, and the negative pole of the photovoltaic controller 207 is connected to the output negative pole of the step-down component 206 and the negative pole of the battery respectively.

[0121] Because the voltage output by the photovoltaic panel 204 is higher than the operating voltage of the photovoltaic controller 207, a step-down component 206 is required to reduce the voltage output by the photovoltaic panel 204 to provide power to the photovoltaic controller 207. When the lighting conditions are good, the photovoltaic panel 204 operates, and the photovoltaic panel 204 supplies power to the photovoltaic controller 207. When the lighting conditions are poor, the photovoltaic panel 204 does not operate, and the battery supplies power to the photovoltaic controller 207.

[0122] The boost component 205 is connected to the high-voltage interlocking component in the photovoltaic charging unit 203; that is, the output positive pole of the boost component 205 is respectively connected to the first high-voltage end of the first high-voltage interlocking component 208 and the first high-voltage end of the second high-voltage interlocking component 209, and the output negative pole of the boost component 205 is respectively connected to the first high-voltage end of the third high-voltage interlocking component 210 and the first high-voltage end of the fourth high-voltage interlocking component 211.

[0123] The high-voltage interlock assembly in the power battery unit 201 is connected to the power battery 212 in the power battery unit 201 .

[0124] The high-voltage interlock assembly in the power battery unit 201 includes a fifth high-voltage interlock assembly 213 and a sixth high-voltage interlock assembly 214. The positive electrode of the power battery 212 is connected to the first high-voltage terminal of the fifth high-voltage interlock assembly 213, and the negative electrode of the power battery 212 is connected to the first high-voltage terminal of the sixth high-voltage interlock assembly 214.

[0125] The high-voltage interlock assembly in the high-voltage power distribution unit 202 is connected to the load 215 in the high-voltage power distribution unit 202 .

[0126] The high-voltage interlock assembly in the high-voltage power distribution unit 202 includes a seventh high-voltage interlock assembly 216 and an eighth high-voltage interlock assembly 217. The positive electrode of the load 215 is connected to the first high-voltage terminal of the seventh high-voltage interlock assembly 216, and the negative electrode of the load 215 is connected to the first high-voltage terminal of the eighth high-voltage interlock assembly 217.

[0127] It should be noted that the load can be an electrical appliance or multiple electrical appliances connected in series or parallel. The electrical appliances can be resistors, contactors, air conditioners, motors, etc. The embodiments of this application do not limit the load and can be determined according to actual conditions.

[0128] The high-voltage interlocking assembly in the power battery unit 201 and the high-voltage interlocking assembly in the high-voltage power distribution unit 202 are connected to the high-voltage interlocking assembly in the photovoltaic charging unit 203 .

[0129] Specifically, the second high-voltage end of the first high-voltage interlock assembly 208 is connected to the second high-voltage end of the fifth high-voltage interlock assembly 213, the second high-voltage end of the second high-voltage interlock assembly 209 is connected to the second high-voltage end of the seventh high-voltage interlock assembly 216, the second high-voltage end of the third high-voltage interlock assembly 210 is connected to the second high-voltage end of the sixth high-voltage interlock assembly 214, and the second high-voltage end of the fourth high-voltage interlock assembly 211 is connected to the second high-voltage end of the eighth high-voltage interlock assembly 217.

[0130] The high-voltage interlocking component in the photovoltaic charging unit 203 and the photovoltaic controller 207 form a high-voltage interlocking loop.

[0131] Specifically, the first low-pressure end of the third high-voltage interlocking assembly 210 is connected to the first low-pressure end of the photovoltaic controller 207, the second low-pressure end of the third high-voltage interlocking assembly 210 is connected to the first low-pressure end of the first high-voltage interlocking assembly 208, the second low-pressure end of the first high-voltage interlocking assembly 208 is connected to the first low-pressure end of the second high-voltage interlocking assembly 209, the second low-pressure end of the second high-voltage interlocking assembly 209 is connected to the first low-pressure end of the fourth high-voltage interlocking assembly 211, and the second low-pressure end of the fourth high-voltage interlocking assembly 211 is connected to the second low-pressure end of the photovoltaic controller 207.

[0132] The third high-voltage interlock assembly 210, the first high-voltage interlock assembly 208, the second high-voltage interlock assembly 209, and the fourth high-voltage interlock assembly 211 are sequentially connected to the photovoltaic controller 207 to form a high-voltage interlock circuit. The photovoltaic controller monitors the continuity of the high-voltage interlock circuit and, if it detects an open circuit, controls the vehicle to ensure vehicle safety.

[0133] It should be noted that the monitoring method can be: when the current of the high-voltage interlock circuit is detected to be 0, it is determined that the high-voltage interlock circuit is open. It can also be: when the voltage of the high-voltage interlock circuit is detected to be 0, it is determined that the high-voltage interlock circuit is open. It can also be: when the resistance of the high-voltage interlock circuit is detected to be greater than a preset resistance, it is determined that the high-voltage interlock circuit is open. The preset resistance can be 5 megohms, 7 megohms, 20 megohms, etc. The embodiments of the present application do not limit the detection method and the preset resistance, and they can be determined according to actual conditions.

[0134] It should be noted that when the PV controller detects that the high-voltage interlock circuit is open, the vehicle can be controlled by reducing the output power of the power battery, controlling the vehicle to power off, displaying a warning message, etc. This embodiment of the application does not limit the method of controlling the vehicle, and it can be determined according to actual circumstances.

[0135] It should be noted that the PV controller can also detect whether the high-voltage circuit is loose through the high-voltage interlock circuit.

[0136] It should be noted that the photovoltaic controller can monitor the on-off of the high-voltage interlocking circuit in real time, and can also monitor the on-off of the high-voltage interlocking circuit when the vehicle is under preset conditions.

[0137] The preset condition may be: the vehicle is powered on, or the output power of the photovoltaic panel is greater than a preset power.

[0138] When the vehicle is powered on, the power battery is discharged, and the high-voltage interlock circuit needs to be monitored for safety. If the photovoltaic panel's output power is greater than the preset power, it means the panel is charging the power battery, and the high-voltage interlock circuit needs to be monitored for safety.

[0139] The preset power can be: 50 watts, 100 watts, 200 watts, etc. The embodiment of the present application does not limit the preset power and can be determined according to actual conditions.

[0140] When the output power of photovoltaic panel 204 exceeds a preset power level, the low-voltage electricity generated by photovoltaic panel 204 is boosted by boost assembly 205 and can be used to charge the power battery. Boost assembly 205, first high-voltage interlock assembly 208, fifth high-voltage interlock assembly 213, power battery 212, sixth high-voltage interlock assembly 214, and third high-voltage interlock assembly 210 form a photovoltaic charging circuit.

[0141] The power battery 212, the fifth high-voltage interlocking assembly 213, the first high-voltage interlocking assembly 208, the second high-voltage interlocking assembly 209, the seventh high-voltage interlocking assembly 216, the load 215, the eighth high-voltage interlocking assembly 217, the fourth high-voltage interlocking assembly 211, the third high-voltage interlocking assembly 210, and the sixth high-voltage interlocking assembly 214 form a power supply circuit, and the power battery 212 supplies power to the load 215 through the power supply circuit.

[0142] It should be noted that switches can be provided between the positive electrode of the power battery 212 and the fifth high-voltage interlock assembly 213, between the negative electrode of the power battery 212 and the sixth high-voltage interlock assembly 214, and between the sixth high-voltage interlock assembly 214 and the positive electrode of the load 215. A switch is provided after the positive output electrode of the boost assembly 205. The positive output electrode of the boost assembly 205 is connected to the first high-voltage terminal of the first high-voltage interlock assembly 208 and the first high-voltage terminal of the second high-voltage interlock assembly 209 via the switches. The switches can be used to control the on / off state of the circuit, thereby improving circuit safety.

[0143] It should be noted that the second low-voltage terminal of the fifth high-voltage interlock assembly 213 is connected to the first low-voltage terminal of the sixth high-voltage interlock assembly 214. The first low-voltage terminal of the fifth high-voltage interlock assembly 213 and the second low-voltage terminal of the sixth high-voltage interlock assembly 214 are connected to the battery controller, forming a battery high-voltage interlock circuit. The battery controller can monitor the continuity of the battery high-voltage interlock circuit and control the vehicle to ensure vehicle safety if it detects that the battery high-voltage interlock circuit is open.

[0144] It should be noted that the first low-voltage terminal of the seventh high-voltage interlock assembly 216 is connected to the second low-voltage terminal of the eighth high-voltage interlock assembly 217. The second low-voltage terminal of the seventh high-voltage interlock assembly 216 and the first low-voltage terminal of the eighth high-voltage interlock assembly 217 are connected to the load controller, forming a load high-voltage interlock circuit. The load controller can monitor the open and close of the load high-voltage interlock circuit and control the vehicle to ensure vehicle safety if it detects that the load high-voltage interlock circuit is open.

[0145] It should be noted that there is no need to set high-voltage interlocking components at the output positive and negative poles of the boost component. This is because these two parts are located inside the photovoltaic charging unit and there is no risk of high-voltage leakage.

[0146] The photovoltaic high-voltage charging system provided in this embodiment uses the photovoltaic panels and boost components in the photovoltaic charging unit to charge the power battery in the power battery unit, and uses the buck components in the photovoltaic charging unit to power the photovoltaic controller in the photovoltaic charging unit. Furthermore, the high-voltage interlocking components in the photovoltaic charging unit form a high-voltage interlocking circuit with the photovoltaic controller. The photovoltaic controller can detect the on / off status of the high-voltage interlocking circuit, ensuring vehicle safety during the charging and discharging of the power battery.

[0147] Figure 4 Schematic diagram of the photovoltaic high-voltage charging system provided in this application Figure 2 , the embodiment of the present application describes a photovoltaic high-voltage charging system in which a power battery unit and a high-voltage distribution unit are connected to a photovoltaic charging unit through a switching unit.

[0148] like Figure 4 As shown, the photovoltaic high-voltage charging system includes: a power battery unit 401, a high-voltage power distribution unit 402, a photovoltaic charging unit 403 and a switching unit 404.

[0149] The photovoltaic charging unit 403 includes a photovoltaic panel 405, a voltage-boosting component 406, a voltage-reducing component 407, a photovoltaic controller 408 and a high-voltage interlocking component.

[0150] It should be noted that the boost component and the buck component may be DC-DC converters.

[0151] The photovoltaic panel 405 is connected to the boost component 406 and the buck component 407 respectively, that is, the output positive pole of the photovoltaic panel 405 is connected to the input positive pole of the boost component 406 and the input positive pole of the buck component 407 respectively, and the output negative pole of the photovoltaic panel 405 is connected to the input negative pole of the boost component 406 and the input negative pole of the buck component 407 respectively.

[0152] The photovoltaic controller 408 is connected to the step-down component 407 and the battery in the vehicle respectively, that is, the positive pole of the photovoltaic controller 408 is connected to the output positive pole of the step-down component 407 and the positive pole of the battery respectively, and the negative pole of the photovoltaic controller 408 is connected to the output negative pole of the step-down component 407 and the negative pole of the battery respectively.

[0153] Because the voltage output by photovoltaic panel 405 is higher than the operating voltage of photovoltaic controller 408, step-down component 407 is required to reduce the voltage output by photovoltaic panel 405 to provide power to photovoltaic controller 408. When the lighting conditions are good, photovoltaic panel 405 operates and supplies power to photovoltaic controller 408. When the lighting conditions are poor, photovoltaic panel 405 does not operate and the battery supplies power to photovoltaic controller 408.

[0154] The high-voltage interlocking assembly in the photovoltaic charging unit 403 includes a ninth high-voltage interlocking assembly 409 and a tenth high-voltage interlocking assembly 410;

[0155] The high-voltage interlocking components in the switching unit 404 include an eleventh high-voltage interlocking component 411, a twelfth high-voltage interlocking component 412, a thirteenth high-voltage interlocking component 413, a fourteenth high-voltage interlocking component 414, a fifteenth high-voltage interlocking component 415, and a sixteenth high-voltage interlocking component 416;

[0156] The high-voltage interlock assembly in the power battery unit 401 includes a seventeenth high-voltage interlock assembly 417 and an eighteenth high-voltage interlock assembly 418;

[0157] The high-voltage interlock assembly in the high-voltage power distribution unit 402 includes a nineteenth high-voltage interlock assembly 419 and a twentieth high-voltage interlock assembly 420 .

[0158] The boost component 406 is connected to the high-voltage interlocking component in the photovoltaic charging unit 403; that is, the output positive pole of the boost component 406 is connected to the first high-voltage end of the ninth high-voltage interlocking component 409, and the output negative pole of the boost component 406 is connected to the first high-voltage end of the tenth high-voltage interlocking component 410.

[0159] The high-voltage interlock assembly in the power battery unit 401 is connected to the power battery 421 in the power battery unit 401. That is, the positive electrode of the power battery 421 is connected to the first high-voltage terminal of the eighteenth high-voltage interlock assembly 418, and the negative electrode of the power battery 421 is connected to the first high-voltage terminal of the seventeenth high-voltage interlock assembly 417.

[0160] The high-voltage interlock assembly in the high-voltage distribution unit 402 is connected to the load 422 in the high-voltage distribution unit 402. That is, the positive electrode of the load 422 is connected to the first high-voltage terminal of the nineteenth high-voltage interlock assembly 419, and the negative electrode of the load 422 is connected to the first high-voltage terminal of the twentieth high-voltage interlock assembly 420.

[0161] The high-voltage interlocking assembly in the power battery unit 401 and the high-voltage interlocking assembly in the high-voltage distribution unit 402 are connected to the high-voltage interlocking assembly in the photovoltaic charging unit 403 through the high-voltage interlocking assembly in the adapter unit 404 .

[0162] Specifically, the second high-voltage end of the fifteenth high-voltage interlock assembly 415 is connected to the second high-voltage end of the eighteenth high-voltage interlock assembly 418, the second high-voltage end of the sixteenth high-voltage interlock assembly 416 is connected to the second high-voltage end of the seventeenth high-voltage interlock assembly 417, the second high-voltage end of the thirteenth high-voltage interlock assembly 413 is connected to the second high-voltage end of the twentieth high-voltage interlock assembly 420, and the second high-voltage end of the fourteenth high-voltage interlock assembly 414 is connected to the second high-voltage end of the nineteenth high-voltage interlock assembly 419;

[0163] The second high-voltage end of the eleventh high-voltage interlock assembly 411 is connected to the second high-voltage end of the ninth high-voltage interlock assembly 409 , and the second high-voltage end of the twelfth high-voltage interlock assembly 412 is connected to the second high-voltage end of the tenth high-voltage interlock assembly 410 ;

[0164] The first high-voltage end of the eleventh high-voltage interlocking assembly 411 is respectively connected to the first high-voltage end of the fourteenth high-voltage interlocking assembly 414 and the first high-voltage end of the fifteenth high-voltage interlocking assembly 415, and the first high-voltage end of the twelfth high-voltage interlocking assembly 412 is respectively connected to the first high-voltage end of the thirteenth high-voltage interlocking assembly 413 and the first high-voltage end of the sixteenth high-voltage interlocking assembly 416.

[0165] In one implementation, the high-voltage interlocking component in the photovoltaic charging unit 403 , the high-voltage interlocking component in the switching unit 404 , and the photovoltaic controller 408 form a high-voltage interlocking loop.

[0166] Specifically, the first low-voltage end of the ninth high-voltage interlocking assembly 409 is connected to the first low-voltage end of the photovoltaic controller 408, the second low-voltage end of the ninth high-voltage interlocking assembly 409 is connected to the first low-voltage end of the eleventh high-voltage interlocking assembly 411, the second low-voltage end of the eleventh high-voltage interlocking assembly 411 is connected to the first low-voltage end of the sixteenth high-voltage interlocking assembly 416, the second low-voltage end of the sixteenth high-voltage interlocking assembly 416 is connected to the first low-voltage end of the fifteenth high-voltage interlocking assembly 415, and the second low-voltage end of the fifteenth high-voltage interlocking assembly 415 is connected. It is connected to the first low-pressure end of the fourteenth high-voltage interlocking assembly 414, the second low-pressure end of the fourteenth high-voltage interlocking assembly 414 is connected to the first low-pressure end of the thirteenth high-voltage interlocking assembly 413, the second low-pressure end of the thirteenth high-voltage interlocking assembly 413 is connected to the first low-pressure end of the twelfth high-voltage interlocking assembly 412, the second low-pressure end of the twelfth high-voltage interlocking assembly 412 is connected to the first low-pressure end of the tenth high-voltage interlocking assembly 410, and the second low-pressure end of the tenth high-voltage interlocking assembly 410 is connected to the second low-pressure end of the photovoltaic controller 408.

[0167] The ninth high-voltage interlock assembly 409, the eleventh high-voltage interlock assembly 411, the sixteenth high-voltage interlock assembly 416, the fifteenth high-voltage interlock assembly 415, the fourteenth high-voltage interlock assembly 414, the thirteenth high-voltage interlock assembly 413, the twelfth high-voltage interlock assembly 412, and the tenth high-voltage interlock assembly 410 are sequentially connected to the photovoltaic controller 408 to form a high-voltage interlock circuit. The photovoltaic controller can monitor the continuity of the high-voltage interlock circuit and control the vehicle to ensure vehicle safety if it detects that the high-voltage interlock circuit is open.

[0168] It should be noted that the monitoring method is similar to the monitoring method in the above embodiment and will not be described again here.

[0169] In another implementation, the high-voltage interlocking component in the photovoltaic charging unit 403 and the photovoltaic controller 408 form a first high-voltage interlocking loop, and the high-voltage interlocking component in the switching unit 404 and the photovoltaic controller 408 form a second high-voltage interlocking loop.

[0170] For example, in Figure 4On the basis of Figure 5 Schematic diagram of the photovoltaic high-voltage charging system provided in this application Figure 3 ,like Figure 5 As shown, the first low-voltage end of the ninth high-voltage interlocking assembly 409 is connected to the first low-voltage end of the photovoltaic controller 408, the second low-voltage end of the ninth high-voltage interlocking assembly 409 is connected to the first low-voltage end of the tenth high-voltage interlocking assembly 410, and the second low-voltage end of the tenth high-voltage interlocking assembly 410 is connected to the second low-voltage end of the photovoltaic controller 408.

[0171] The first low-pressure end of the twelfth high-voltage interlocking assembly 412 is connected to the first low-pressure end of the photovoltaic controller 408, the second low-pressure end of the twelfth high-voltage interlocking assembly 412 is connected to the first low-pressure end of the eleventh high-voltage interlocking assembly 411, the second low-pressure end of the eleventh high-voltage interlocking assembly 411 is connected to the first low-pressure end of the sixteenth high-voltage interlocking assembly 416, the second low-pressure end of the sixteenth high-voltage interlocking assembly 416 is connected to the first low-pressure end of the fifteenth high-voltage interlocking assembly 415, the second low-pressure end of the fifteenth high-voltage interlocking assembly 415 is connected to the first low-pressure end of the fourteenth high-voltage interlocking assembly 414, the second low-pressure end of the fourteenth high-voltage interlocking assembly 414 is connected to the first low-pressure end of the thirteenth high-voltage interlocking assembly 413, and the second low-pressure end of the thirteenth high-voltage interlocking assembly 413 is connected to the second low-pressure end of the photovoltaic controller 408.

[0172] Ninth high-voltage interlock assembly 409, tenth high-voltage interlock assembly 410, and photovoltaic controller 408 are sequentially connected to form a first high-voltage interlock circuit. The photovoltaic controller monitors the continuity of the first high-voltage interlock circuit and, if it detects an open circuit, controls the vehicle to ensure vehicle safety.

[0173] The twelfth high-voltage interlock assembly 412, the eleventh high-voltage interlock assembly 411, the sixteenth high-voltage interlock assembly 416, the fifteenth high-voltage interlock assembly 415, the fourteenth high-voltage interlock assembly 414, the thirteenth high-voltage interlock assembly 413, and the photovoltaic controller 408 are sequentially connected to form a second high-voltage interlock circuit. The photovoltaic controller can monitor the continuity of the second high-voltage interlock circuit and control the vehicle to ensure vehicle safety if it detects that the second high-voltage interlock circuit is disconnected.

[0174] When the output power of photovoltaic panel 405 exceeds a preset power level, the low-voltage electricity generated by photovoltaic panel 405 is boosted by boost assembly 406 and can be used to charge the power battery. Boost assembly 406, ninth high-voltage interlock assembly 409, eleventh high-voltage interlock assembly 411, fifteenth high-voltage interlock assembly 415, eighteenth high-voltage interlock assembly 418, power battery 421, seventeenth high-voltage interlock assembly 417, sixteenth high-voltage interlock assembly 416, twelfth high-voltage interlock assembly 412, and tenth high-voltage interlock assembly 410 form a photovoltaic charging circuit.

[0175] The power battery 421, the eighteenth high-voltage interlocking assembly 418, the fifteenth high-voltage interlocking assembly 415, the fourteenth high-voltage interlocking assembly 414, the nineteenth high-voltage interlocking assembly 419, the load 422, the twentieth high-voltage interlocking assembly 420, the thirteenth high-voltage interlocking assembly 413, the sixteenth high-voltage interlocking assembly 416, and the seventeenth high-voltage interlocking assembly 417 form a power supply circuit, and the power battery 421 supplies power to the load 422 through the power supply circuit.

[0176] It should be noted that switches can be set between the positive pole of the power battery 421 and the eighteenth high-voltage interlocking assembly 418, between the negative pole of the power battery 421 and the seventeenth high-voltage interlocking assembly 417, between the nineteenth high-voltage interlocking assembly 419 and the positive pole of the load 422, and between the boost assembly 406 and the ninth high-voltage interlocking assembly 409. The switches can be used to control the on and off of the circuit to improve circuit safety.

[0177] It should be noted that the second low-voltage terminal of the eighteenth high-voltage interlock assembly 418 is connected to the first low-voltage terminal of the seventeenth high-voltage interlock assembly 417. The first low-voltage terminal of the eighteenth high-voltage interlock assembly 418 and the second low-voltage terminal of the seventeenth high-voltage interlock assembly 417 are connected to the battery controller, forming a battery high-voltage interlock circuit. The battery controller can monitor the continuity of the battery high-voltage interlock circuit and control the vehicle to ensure vehicle safety if it detects that the battery high-voltage interlock circuit is open.

[0178] It should be noted that the first low-voltage terminal of the nineteenth high-voltage interlock group 419 is connected to the second low-voltage terminal of the twentieth high-voltage interlock assembly 420. The second low-voltage terminal of the nineteenth high-voltage interlock group 419 and the first low-voltage terminal of the twentieth high-voltage interlock assembly 420 are connected to the load controller, forming a load high-voltage interlock circuit. The load controller can monitor the continuity of the load high-voltage interlock circuit and control the vehicle to ensure vehicle safety if it detects that the load high-voltage interlock circuit is open.

[0179] The photovoltaic high-voltage charging system provided in this embodiment can charge the power battery in the power battery unit through the photovoltaic panel and boost component in the photovoltaic charging unit, and can power the photovoltaic controller in the photovoltaic charging unit through the buck component in the photovoltaic charging unit. Furthermore, a high-voltage interlocking circuit is formed by the high-voltage interlocking component in the photovoltaic charging unit, the high-voltage interlocking component in the adapter unit, and the photovoltaic controller, or the high-voltage interlocking component in the photovoltaic charging unit and the photovoltaic controller form a first high-voltage interlocking circuit, and the high-voltage interlocking component in the adapter unit and the photovoltaic controller form a second high-voltage interlocking circuit. The photovoltaic controller can detect the continuity of the high-voltage interlocking circuit, the first high-voltage interlocking circuit, and the second high-voltage interlocking circuit to ensure vehicle safety during the charging and discharging of the power battery. In addition, by connecting the adapter unit with the power battery unit, the high-voltage distribution unit, and the photovoltaic charging unit, the interfaces of the power battery unit and the high-voltage distribution unit do not need to be modified, reducing costs.

[0180] Figure 6 Schematic diagram of the photovoltaic high-voltage charging system provided in this application Figure 4 , the embodiment of the present application describes a photovoltaic high-voltage charging system when a power battery unit is connected to a photovoltaic charging unit.

[0181] like Figure 6 As shown, the photovoltaic high-voltage charging system includes: a power battery unit 601 and a photovoltaic charging unit 602.

[0182] The photovoltaic charging unit 602 includes a photovoltaic panel 603, a voltage-boosting component 604, a voltage-down component 605, a photovoltaic controller 606, and a high-voltage interlocking component.

[0183] It should be noted that the boost component and the buck component may be DC-DC converters.

[0184] The photovoltaic panel 603 is connected to the boost component 604 and the buck component 605 respectively, that is, the output positive pole of the photovoltaic panel 603 is connected to the input positive pole of the boost component 604 and the input positive pole of the buck component 605 respectively, and the output negative pole of the photovoltaic panel 603 is connected to the input negative pole of the boost component 604 and the input negative pole of the buck component 605 respectively.

[0185] The photovoltaic controller 606 is connected to the step-down component 605 and the battery in the vehicle respectively, that is, the positive pole of the photovoltaic controller 606 is connected to the output positive pole of the step-down component 605 and the positive pole of the battery respectively, and the negative pole of the photovoltaic controller 606 is connected to the output negative pole of the step-down component 605 and the negative pole of the battery respectively.

[0186] Because the voltage output by the photovoltaic panel 603 is higher than the operating voltage of the photovoltaic controller 606, a step-down component 605 is required to reduce the voltage output by the photovoltaic panel 603 to provide power to the photovoltaic controller 606. When the lighting conditions are good, the photovoltaic panel 603 operates, and the photovoltaic controller 606 is powered by the photovoltaic panel 603. When the lighting conditions are poor, the photovoltaic panel 603 does not operate, and the photovoltaic controller 606 is powered by the battery.

[0187] The high-voltage interlocking assembly in the photovoltaic charging unit 602 includes a twenty-first high-voltage interlocking assembly 607 and a twenty-second high-voltage interlocking assembly 608 .

[0188] The boost component 604 is connected to the high-voltage interlocking component in the photovoltaic charging unit 602, that is, the output positive pole of the boost component 604 is connected to the first high-voltage end of the twenty-first high-voltage interlocking component 607, and the output negative pole of the boost component 604 is connected to the first high-voltage end of the twenty-second high-voltage interlocking component 608.

[0189] The high-voltage interlock assembly in the power battery unit 601 includes a twenty-third high-voltage interlock assembly 609 and a twenty-fourth high-voltage interlock assembly 610 .

[0190] The high-voltage interlocking assembly in the power battery unit 601 is connected to the power battery 611 in the power battery unit 601, that is, the positive pole of the power battery 611 is connected to the first high-voltage end of the twenty-third high-voltage interlocking assembly 609, and the negative pole of the power battery 611 is connected to the first high-voltage end of the twenty-fourth high-voltage interlocking assembly 610.

[0191] The high-voltage interlocking assembly in the power battery unit 601 is connected to the high-voltage interlocking assembly in the photovoltaic charging unit 602, that is, the second high-voltage end of the twenty-third high-voltage interlocking assembly 609 is connected to the second high-voltage end of the twenty-first high-voltage interlocking assembly 607, and the second high-voltage end of the twenty-fourth high-voltage interlocking assembly 610 is connected to the second high-voltage end of the twenty-second high-voltage interlocking assembly 608.

[0192] The high-voltage interlocking component in the power battery unit 601 , the high-voltage interlocking component in the photovoltaic charging unit 602 , and the photovoltaic controller 606 form a high-voltage interlocking loop.

[0193] Specifically, the first low-pressure end of the twenty-fourth high-voltage interlocking assembly 610 is connected to the first low-pressure end of the photovoltaic controller 606, the second low-pressure end of the twenty-fourth high-voltage interlocking assembly 610 is connected to the first low-pressure end of the twenty-third high-voltage interlocking assembly 609, the second low-pressure end of the twenty-third high-voltage interlocking assembly 609 is connected to the first low-pressure end of the twenty-first high-voltage interlocking assembly 607, the second low-pressure end of the twenty-first high-voltage interlocking assembly 607 is connected to the first low-pressure end of the twenty-second high-voltage interlocking assembly 608, and the second low-pressure end of the twenty-second high-voltage interlocking assembly 608 is connected to the second low-pressure end of the photovoltaic controller 606.

[0194] The twenty-fourth high-voltage interlock assembly 610, the twenty-third high-voltage interlock assembly 609, the twenty-first high-voltage interlock assembly 607, the twenty-second high-voltage interlock assembly 608, and the photovoltaic controller 606 are sequentially connected to form a high-voltage interlock circuit. The photovoltaic controller monitors the continuity of the high-voltage interlock circuit and, if it detects an open circuit, controls the vehicle to ensure vehicle safety.

[0195] It should be noted that the monitoring method is similar to the monitoring method in the above embodiment and will not be described again here.

[0196] When the output power of photovoltaic panel 603 exceeds a preset power level, the low-voltage electricity generated by photovoltaic panel 603 is boosted by boost assembly 604 and can be used to charge the power battery. Boost assembly 604, 21st high-voltage interlocking assembly 607, 23rd high-voltage interlocking assembly 607, power battery 611, 24th high-voltage interlocking assembly 610, and 22nd high-voltage interlocking assembly 608 form a photovoltaic charging circuit.

[0197] For example, in Figure 6 On the basis of Figure 7 Schematic diagram of the photovoltaic high-voltage charging system provided in this application Figure 5 ,like Figure 7 As shown, the power battery unit 601 further includes a first newly added high-voltage interlocking assembly 612 and a second newly added high-voltage interlocking assembly 613 , and the volt high-voltage charging system further includes a high-voltage power distribution unit 614 .

[0198] The high-voltage power distribution unit 614 includes a third newly added high-voltage interlocking assembly 615 , a fourth newly added high-voltage interlocking assembly 616 and a load 617 .

[0199] The positive electrode of the power battery 611 is connected to the first high-voltage terminal of the first newly added high-voltage interlock assembly 612, and the negative electrode of the power battery 611 is connected to the first high-voltage terminal of the second newly added high-voltage interlock assembly 613. The second high-voltage terminal of the first newly added high-voltage interlock assembly 612 is connected to the second high-voltage terminal of the third newly added high-voltage interlock assembly 615, and the second high-voltage terminal of the second newly added high-voltage interlock assembly 613 is connected to the second high-voltage terminal of the fourth newly added high-voltage interlock assembly 616. The first high-voltage terminal of the third newly added high-voltage interlock assembly 615 is connected to the positive electrode of the load 617, and the first high-voltage terminal of the fourth newly added high-voltage interlock assembly 616 is connected to the negative electrode of the load 617.

[0200] The power battery 611, the first newly added high-voltage interlocking assembly 612, the third newly added high-voltage interlocking assembly 615, the load 617, the fourth newly added high-voltage interlocking assembly 616, and the second newly added high-voltage interlocking assembly 613 form a power supply circuit, and the power battery 611 supplies power to the load 617 through the power supply circuit.

[0201] It should be noted that a switch can be set after the positive pole of the power battery 611, so that the positive pole of the power battery 611 is connected to the first high-voltage end of the first newly added high-voltage interlocking component 612 and the first high-voltage end of the twenty-third high-voltage interlocking component 609 through the switch; a switch can be set after the negative pole of the power battery 611, so that the negative pole of the power battery 611 is connected to the first high-voltage end of the second newly added high-voltage interlocking component 613 and the first high-voltage end of the twenty-fourth high-voltage interlocking component 610 through the switch; a switch is set between the third newly added high-voltage interlocking component 615 and the positive pole of the load 617, and between the output positive pole of the boost component 604 and the twenty-first high-voltage interlocking component 607, and the on-off of the circuit can be controlled by the switch to improve circuit safety.

[0202] It should be noted that the second low-voltage terminal of the first newly added high-voltage interlock assembly 612 is connected to the first low-voltage terminal of the second newly added high-voltage interlock assembly 613. The first low-voltage terminal of the first newly added high-voltage interlock assembly 612 and the second low-voltage terminal of the second newly added high-voltage interlock assembly 613 are connected to the battery controller, forming a battery high-voltage interlock circuit. The battery controller can monitor the continuity of the battery high-voltage interlock circuit and control the vehicle to ensure vehicle safety if it detects that the battery high-voltage interlock circuit is open.

[0203] It should be noted that the first low-voltage terminal of the third newly added high-voltage interlock assembly 615 is connected to the second low-voltage terminal of the fourth newly added high-voltage interlock assembly 616. The second low-voltage terminal of the third newly added high-voltage interlock assembly 615 and the first low-voltage terminal of the fourth newly added high-voltage interlock assembly 616 are connected to the load controller, forming a load high-voltage interlock circuit. The load controller can monitor the open and close of the load high-voltage interlock circuit and control the vehicle to ensure vehicle safety when it detects that the load high-voltage interlock circuit is open.

[0204] The photovoltaic high-voltage charging system provided in this embodiment uses the photovoltaic panels and boost components in the photovoltaic charging unit to charge the power battery in the power battery unit, and uses the buck components in the photovoltaic charging unit to power the photovoltaic controller in the photovoltaic charging unit. Furthermore, the high-voltage interlocking components in the power battery unit, the photovoltaic charging unit, and the photovoltaic controller form a high-voltage interlocking circuit. The photovoltaic controller can detect the on / off status of the high-voltage interlocking circuit, ensuring vehicle safety during the charging and discharging of the power battery.

[0205] Figure 8 Schematic diagram of the photovoltaic high-voltage charging system provided in this application Figure 6 , the embodiment of the present application describes a photovoltaic high-voltage charging system when a power battery unit is connected to a high-voltage distribution unit.

[0206] like Figure 8 As shown, the photovoltaic high-voltage charging system includes: a power battery unit 801, a photovoltaic charging unit 802 and a high-voltage distribution unit 803.

[0207] The photovoltaic charging unit 802 includes a photovoltaic panel 804, a voltage-boosting component 805, a voltage-down component 806, a photovoltaic controller 807, and a high-voltage interlocking component.

[0208] The photovoltaic panel 804 is connected to the boost component 805 and the buck component 806 respectively, that is, the output positive pole of the photovoltaic panel 804 is connected to the input positive pole of the boost component 805 and the input positive pole of the buck component 806 respectively, and the output negative pole of the photovoltaic panel 804 is connected to the input negative pole of the boost component 805 and the input negative pole of the buck component 806 respectively.

[0209] The photovoltaic controller 807 is connected to the step-down component 806 and the battery in the vehicle respectively, that is, the positive pole of the photovoltaic controller 807 is connected to the output positive pole of the step-down component 806 and the positive pole of the battery respectively, and the negative pole of the photovoltaic controller 807 is connected to the output negative pole of the step-down component 806 and the negative pole of the battery respectively.

[0210] Because the voltage output by photovoltaic panel 804 is higher than the operating voltage of photovoltaic controller 807, step-down component 806 is required to reduce the voltage output by photovoltaic panel 804 to provide power to photovoltaic controller 807. When the lighting conditions are good, photovoltaic panel 804 operates and supplies power to photovoltaic controller 807. When the lighting conditions are poor, photovoltaic panel 804 does not operate and the battery supplies power to photovoltaic controller 807.

[0211] The high-voltage interlocking assembly in the photovoltaic charging unit 802 includes a twenty-fifth high-voltage interlocking assembly 808 and a twenty-sixth high-voltage interlocking assembly 809 .

[0212] The boost component 805 is connected to the high-voltage interlocking component in the photovoltaic charging unit 802, that is, the output positive pole of the boost component 805 is connected to the first high-voltage end of the twenty-fifth high-voltage interlocking component 808, and the output negative pole of the boost component 805 is connected to the first high-voltage end of the twenty-sixth high-voltage interlocking component 809.

[0213] The high-voltage interlocking components in the high-voltage distribution unit 803 include the twenty-seventh high-voltage interlocking component 810, the twenty-eighth high-voltage interlocking component 811, the twenty-ninth high-voltage interlocking component 812 and the thirtieth high-voltage interlocking component 813; the high-voltage interlocking components in the power battery unit 801 include the thirty-first high-voltage interlocking component 814 and the thirty-second high-voltage interlocking component 815.

[0214] The high-voltage interlocking assembly in the power battery unit 801 is connected to the power battery 816 in the power battery unit 801 and the high-voltage interlocking assembly in the high-voltage power distribution unit 803 respectively.

[0215] Specifically, the positive pole of the power battery 816 is connected to the first high voltage end of the thirty-first high voltage interlocking assembly 814, the negative pole of the power battery 816 is connected to the first high voltage end of the thirty-second high voltage interlocking assembly 815, the second high voltage end of the thirty-first high voltage interlocking assembly 814 is connected to the second high voltage end of the thirtieth high voltage interlocking assembly 813, and the second high voltage end of the thirty-second high voltage interlocking assembly 815 is connected to the second high voltage end of the twenty-ninth high voltage interlocking assembly 812.

[0216] The high-voltage interlocking assembly in the high-voltage distribution unit 803 is connected to the load 817 in the high-voltage distribution unit 803 and the high-voltage interlocking assembly in the photovoltaic charging unit 802 respectively.

[0217] Specifically, the first high-voltage end of the twenty-seventh high-voltage interlock assembly 810 is connected to the first high-voltage end of the twenty-fifth high-voltage interlock assembly 808 , and the first high-voltage end of the twenty-eighth high-voltage interlock assembly 811 is connected to the first high-voltage end of the twenty-sixth high-voltage interlock assembly 809 ;

[0218] The second high-voltage end of the twenty-seventh high-voltage interlocking assembly 810 is respectively connected to the second high-voltage end of the thirtieth high-voltage interlocking assembly 813 and the positive pole of the load 817, and the second high-voltage end of the twenty-eighth high-voltage interlocking assembly 811 is respectively connected to the second high-voltage end of the twenty-ninth high-voltage interlocking assembly 812 and the negative pole of the load 817.

[0219] The high-voltage interlocking component in the high-voltage distribution unit 803, the high-voltage interlocking component in the photovoltaic charging unit 802 and the photovoltaic controller 807 form a high-voltage interlocking loop.

[0220] Specifically, the first low-voltage end of the twenty-eighth high-voltage interlocking assembly 811 is connected to the first low-voltage end of the photovoltaic controller 807, the second low-voltage end of the twenty-eighth high-voltage interlocking assembly 811 is connected to the first low-voltage end of the twenty-seventh high-voltage interlocking assembly 810, the second low-voltage end of the twenty-seventh high-voltage interlocking assembly 810 is connected to the first low-voltage end of the twenty-fifth high-voltage interlocking assembly 808, the second low-voltage end of the twenty-fifth high-voltage interlocking assembly 808 is connected to the first low-voltage end of the twenty-sixth high-voltage interlocking assembly 809, and the second low-voltage end of the twenty-sixth high-voltage interlocking assembly 809 is connected to the second low-voltage end of the photovoltaic controller 807.

[0221] The twenty-eighth high-voltage interlock assembly 811, the twenty-seventh high-voltage interlock assembly 810, the twenty-fifth high-voltage interlock assembly 808, the twenty-sixth high-voltage interlock assembly 809, and the photovoltaic controller 807 are sequentially connected to form a high-voltage interlock circuit. The photovoltaic controller monitors the continuity of the high-voltage interlock circuit and, if it detects an open circuit, controls the vehicle to ensure vehicle safety.

[0222] It should be noted that the monitoring method is similar to the monitoring method in the above embodiment and will not be described again here.

[0223] When the output power of photovoltaic panel 804 exceeds the preset power, the low-voltage electricity generated by photovoltaic panel 804 is boosted by boost assembly 805 and can be used to charge the power battery. Boost assembly 805, 25th high-voltage interlock assembly 808, 27th high-voltage interlock assembly 810, 30th high-voltage interlock assembly 813, 31st high-voltage interlock assembly 814, power battery 816, 32nd high-voltage interlock assembly 815, 29th high-voltage interlock assembly 812, 28th high-voltage interlock assembly 811, and 26th high-voltage interlock assembly 809 form a photovoltaic charging circuit.

[0224] The power battery 816, the thirty-first high-voltage interlocking assembly 814, the thirtieth high-voltage interlocking assembly 813, the load 817, the twenty-ninth high-voltage interlocking assembly 812, and the thirty-second high-voltage interlocking assembly 815 form a power supply circuit, and the power battery 816 supplies power to the load 817 through the power supply circuit.

[0225] It should be noted that a switch can be set between the positive pole of the power battery 816 and the thirty-first high-voltage interlocking assembly 814, between the negative pole of the power battery 816 and the thirty-second high-voltage interlocking assembly 815, and between the output positive pole of the boost assembly 805 and the twenty-fifth high-voltage interlocking assembly 808; a switch is set before the positive pole of the load 817, so that the positive pole of the load 817 is connected to the first high-voltage end of the 30th high-voltage interlocking assembly 813 and the first high-voltage end of the twenty-seventh high-voltage interlocking assembly 810 through the switch; the on and off of the circuit can be controlled by the switch to improve circuit safety.

[0226] It should be noted that the second low-voltage terminal of the 31st high-voltage interlock assembly 814 is connected to the first low-voltage terminal of the 32nd high-voltage interlock assembly 815. The first low-voltage terminal of the 31st high-voltage interlock assembly 814 and the second low-voltage terminal of the 32nd high-voltage interlock assembly 815 are connected to the battery controller, forming a battery high-voltage interlock circuit. The battery controller can monitor the continuity of the battery high-voltage interlock circuit and control the vehicle to ensure vehicle safety when it detects that the battery high-voltage interlock circuit is open.

[0227] It should be noted that the first low-voltage terminal of the 30th high-voltage interlock assembly 813 is connected to the second low-voltage terminal of the 29th high-voltage interlock assembly 812. The second low-voltage terminal of the 30th high-voltage interlock assembly 813 and the first low-voltage terminal of the 29th high-voltage interlock assembly 812 are connected to the load controller, forming a load high-voltage interlock circuit. The load controller can monitor the open and close of the load high-voltage interlock circuit and control the vehicle to ensure vehicle safety when it detects that the load high-voltage interlock circuit is open.

[0228] In this embodiment of the photovoltaic high-voltage charging system, the photovoltaic panels and boost components in the photovoltaic charging unit are used to charge the power batteries in the power battery unit, while the buck components in the photovoltaic charging unit are used to power the photovoltaic controller in the photovoltaic charging unit. Furthermore, a high-voltage interlocking circuit is formed by the high-voltage interlocking components in the high-voltage distribution unit, the high-voltage interlocking components in the photovoltaic charging unit, and the photovoltaic controller. The photovoltaic controller can detect the on / off status of the high-voltage interlocking circuit, thereby ensuring vehicle safety during the charging and discharging of the power batteries.

[0229] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A photovoltaic high-voltage charging system, characterized in that: include: Power battery unit, high-voltage power distribution unit and photovoltaic charging unit; The photovoltaic charging unit includes a photovoltaic panel, a boost component, a buck component, a photovoltaic controller and a high-voltage interlocking component; The photovoltaic panels are respectively connected to the boost component and the buck component, the photovoltaic controller is respectively connected to the buck component and the battery in the vehicle, the boost component is connected to the high-voltage interlocking component in the photovoltaic charging unit; the high-voltage interlocking component in the photovoltaic charging unit and the photovoltaic controller form a high-voltage interlocking loop; The high-voltage interlocking assembly in the power battery unit and the high-voltage interlocking assembly in the high-voltage power distribution unit are connected to the high-voltage interlocking assembly in the photovoltaic charging unit.

2. The photovoltaic high-voltage charging system according to claim 1, characterized in that: The high-voltage interlocking assembly in the power battery unit is connected to the power battery in the power battery unit; The high-voltage interlocking assembly in the high-voltage power distribution unit is connected to the load in the high-voltage power distribution unit.

3. The photovoltaic high-voltage charging system according to claim 2, characterized in that: The high-voltage interlocking assembly in the photovoltaic charging unit includes a first high-voltage interlocking assembly, a second high-voltage interlocking assembly, a third high-voltage interlocking assembly and a fourth high-voltage interlocking assembly; The high-voltage interlocking component in the photovoltaic charging unit and the photovoltaic controller form a high-voltage interlocking loop, including: The first low-pressure end of the third high-pressure interlocking assembly is connected to the first low-pressure end of the photovoltaic controller, the second low-pressure end of the third high-pressure interlocking assembly is connected to the first low-pressure end of the first high-pressure interlocking assembly, the second low-pressure end of the first high-pressure interlocking assembly is connected to the first low-pressure end of the second high-pressure interlocking assembly, the second low-pressure end of the second high-pressure interlocking assembly is connected to the first low-pressure end of the fourth high-pressure interlocking assembly, and the second low-pressure end of the fourth high-pressure interlocking assembly is connected to the second low-pressure end of the photovoltaic controller.

4. The photovoltaic high-voltage charging system according to claim 3, characterized in that: The boost component is connected to the high-voltage interlocking component in the photovoltaic charging unit, and includes: The output positive pole of the boost assembly is respectively connected to the first high-voltage end of the first high-voltage interlock assembly and the first high-voltage end of the second high-voltage interlock assembly, and the output negative pole of the boost assembly is respectively connected to the first high-voltage end of the third high-voltage interlock assembly and the first high-voltage end of the fourth high-voltage interlock assembly.

5. The photovoltaic high-voltage charging system according to claim 4, characterized in that: The high-voltage interlock assembly in the power battery unit includes a fifth high-voltage interlock assembly and a sixth high-voltage interlock assembly; The high-voltage interlocking assembly in the high-voltage power distribution unit includes a seventh high-voltage interlocking assembly and an eighth high-voltage interlocking assembly; The high-voltage interlock assembly in the power battery unit is connected to the power battery in the power battery unit, including: The positive electrode of the power battery is connected to the first high-voltage terminal of the fifth high-voltage interlocking assembly, and the negative electrode of the power battery is connected to the first high-voltage terminal of the sixth high-voltage interlocking assembly; The high-voltage interlocking assembly in the high-voltage power distribution unit is connected to a load in the high-voltage power distribution unit, including: The positive electrode of the load is connected to the first high-voltage terminal of the seventh high-voltage interlocking assembly, and the negative electrode of the load is connected to the first high-voltage terminal of the eighth high-voltage interlocking assembly.

6. The photovoltaic high-voltage charging system according to claim 5, characterized in that: The high-voltage interlocking assembly in the power battery unit and the high-voltage interlocking assembly in the high-voltage power distribution unit are connected to the high-voltage interlocking assembly in the photovoltaic charging unit, including: The second high-voltage end of the first high-voltage interlock assembly is connected to the second high-voltage end of the fifth high-voltage interlock assembly, the second high-voltage end of the second high-voltage interlock assembly is connected to the second high-voltage end of the seventh high-voltage interlock assembly, the second high-voltage end of the third high-voltage interlock assembly is connected to the second high-voltage end of the sixth high-voltage interlock assembly, and the second high-voltage end of the fourth high-voltage interlock assembly is connected to the second high-voltage end of the eighth high-voltage interlock assembly.

7. The photovoltaic high-voltage charging system according to claim 2, characterized in that: The photovoltaic high-voltage charging system further includes a switching unit; The high-voltage interlocking assembly in the power battery unit and the high-voltage interlocking assembly in the high-voltage power distribution unit are connected to the high-voltage interlocking assembly in the photovoltaic charging unit, including: The high-voltage interlocking assembly in the power battery unit and the high-voltage interlocking assembly in the high-voltage power distribution unit are connected to the high-voltage interlocking assembly in the photovoltaic charging unit through the high-voltage interlocking assembly in the adapter unit; The high-voltage interlocking component in the photovoltaic charging unit and the photovoltaic controller form a high-voltage interlocking loop, including: The high-voltage interlocking component in the photovoltaic charging unit, the high-voltage interlocking component in the switching unit and the photovoltaic controller form a high-voltage interlocking loop; or, The high-voltage interlocking component in the photovoltaic charging unit and the photovoltaic controller form a first high-voltage interlocking loop, and the high-voltage interlocking component in the switching unit and the photovoltaic controller form a second high-voltage interlocking loop.

8. The photovoltaic high-voltage charging system according to claim 7, characterized in that: The high-voltage interlocking assembly in the photovoltaic charging unit includes a ninth high-voltage interlocking assembly and a tenth high-voltage interlocking assembly; The high-voltage interlocking assembly in the switching unit includes an eleventh high-voltage interlocking assembly, a twelfth high-voltage interlocking assembly, a thirteenth high-voltage interlocking assembly, a fourteenth high-voltage interlocking assembly, a fifteenth high-voltage interlocking assembly, and a sixteenth high-voltage interlocking assembly; The high-voltage interlock assembly in the power battery unit includes a seventeenth high-voltage interlock assembly and an eighteenth high-voltage interlock assembly; The high-voltage interlocking assembly in the high-voltage power distribution unit includes a nineteenth high-voltage interlocking assembly and a twentieth high-voltage interlocking assembly.

9. The photovoltaic high-voltage charging system according to claim 8, characterized in that: The high-voltage interlocking component in the photovoltaic charging unit, the high-voltage interlocking component in the switching unit, and the photovoltaic controller form a high-voltage interlocking loop, including: The first low-pressure end of the ninth high-voltage interlocking assembly is connected to the first low-pressure end of the photovoltaic controller, the second low-pressure end of the ninth high-voltage interlocking assembly is connected to the first low-pressure end of the eleventh high-voltage interlocking assembly, the second low-pressure end of the eleventh high-voltage interlocking assembly is connected to the first low-pressure end of the sixteenth high-voltage interlocking assembly, the second low-pressure end of the sixteenth high-voltage interlocking assembly is connected to the first low-pressure end of the fifteenth high-voltage interlocking assembly, the second low-pressure end of the fifteenth high-voltage interlocking assembly is connected to the first low-pressure end of the fourteenth high-voltage interlocking assembly, the second low-pressure end of the fourteenth high-voltage interlocking assembly is connected to the first low-pressure end of the thirteenth high-voltage interlocking assembly, the second low-pressure end of the thirteenth high-voltage interlocking assembly is connected to the first low-pressure end of the twelfth high-voltage interlocking assembly, the second low-pressure end of the twelfth high-voltage interlocking assembly is connected to the first low-pressure end of the tenth high-voltage interlocking assembly, and the second low-pressure end of the tenth high-voltage interlocking assembly is connected to the second low-pressure end of the photovoltaic controller.

10. The photovoltaic high-voltage charging system according to claim 8, characterized in that: The high-voltage interlocking component in the photovoltaic charging unit and the photovoltaic controller form a first high-voltage interlocking loop, including: The first low-voltage end of the ninth high-voltage interlocking assembly is connected to the first low-voltage end of the photovoltaic controller, the second low-voltage end of the ninth high-voltage interlocking assembly is connected to the first low-voltage end of the tenth high-voltage interlocking assembly, and the second low-voltage end of the tenth high-voltage interlocking assembly is connected to the second low-voltage end of the photovoltaic controller; The high-voltage interlocking component in the switching unit and the photovoltaic controller form a second high-voltage interlocking loop, including: The first low-pressure end of the twelfth high-pressure interlocking assembly is connected to the first low-pressure end of the photovoltaic controller, the second low-pressure end of the twelfth high-pressure interlocking assembly is connected to the first low-pressure end of the eleventh high-pressure interlocking assembly, the second low-pressure end of the eleventh high-pressure interlocking assembly is connected to the first low-pressure end of the sixteenth high-pressure interlocking assembly, the second low-pressure end of the sixteenth high-pressure interlocking assembly is connected to the first low-pressure end of the fifteenth high-pressure interlocking assembly, the second low-pressure end of the fifteenth high-pressure interlocking assembly is connected to the first low-pressure end of the fourteenth high-pressure interlocking assembly, the second low-pressure end of the fourteenth high-pressure interlocking assembly is connected to the first low-pressure end of the thirteenth high-pressure interlocking assembly, and the second low-pressure end of the thirteenth high-pressure interlocking assembly is connected to the second low-pressure end of the photovoltaic controller.

11. The photovoltaic high-voltage charging system according to claim 9 or 10, characterized in that: The boost component is connected to the high-voltage interlocking component in the photovoltaic charging unit, and includes: The output positive electrode of the boost assembly is connected to the first high-voltage end of the ninth high-voltage interlock assembly, and the output negative electrode of the boost assembly is connected to the first high-voltage end of the tenth high-voltage interlock assembly.

12. The photovoltaic high-voltage charging system according to claim 11, characterized in that: The high-voltage interlock assembly in the power battery unit is connected to the power battery in the power battery unit, including: The positive electrode of the power battery is connected to the first high-voltage terminal of the eighteenth high-voltage interlocking assembly, and the negative electrode of the power battery is connected to the first high-voltage terminal of the seventeenth high-voltage interlocking assembly; The high-voltage interlocking assembly in the high-voltage power distribution unit is connected to a load in the high-voltage power distribution unit, including: The positive electrode of the load is connected to the first high voltage terminal of the nineteenth high voltage interlocking assembly, and the negative electrode of the load is connected to the first high voltage terminal of the twentieth high voltage interlocking assembly.

13. The photovoltaic high-voltage charging system according to claim 12, characterized in that: The high-voltage interlocking assembly in the power battery unit and the high-voltage interlocking assembly in the high-voltage power distribution unit are connected to the high-voltage interlocking assembly in the photovoltaic charging unit through the high-voltage interlocking assembly in the adapter unit, including: The second high-voltage end of the fifteenth high-voltage interlock assembly is connected to the second high-voltage end of the eighteenth high-voltage interlock assembly, the second high-voltage end of the sixteenth high-voltage interlock assembly is connected to the second high-voltage end of the seventeenth high-voltage interlock assembly, the second high-voltage end of the thirteenth high-voltage interlock assembly is connected to the second high-voltage end of the twentieth high-voltage interlock assembly, and the second high-voltage end of the fourteenth high-voltage interlock assembly is connected to the second high-voltage end of the nineteenth high-voltage interlock assembly; The second high-voltage end of the eleventh high-voltage interlock assembly is connected to the second high-voltage end of the ninth high-voltage interlock assembly, and the second high-voltage end of the twelfth high-voltage interlock assembly is connected to the second high-voltage end of the tenth high-voltage interlock assembly; The first high-voltage end of the eleventh high-voltage interlocking assembly is respectively connected to the first high-voltage end of the fourteenth high-voltage interlocking assembly and the first high-voltage end of the fifteenth high-voltage interlocking assembly, and the first high-voltage end of the twelfth high-voltage interlocking assembly is respectively connected to the first high-voltage end of the thirteenth high-voltage interlocking assembly and the first high-voltage end of the sixteenth high-voltage interlocking assembly.

14. A photovoltaic high-voltage charging system, characterized in that: include: Power battery unit and photovoltaic charging unit; The photovoltaic charging unit includes a photovoltaic panel, a boost component, a buck component, a photovoltaic controller and a high-voltage interlocking component; The photovoltaic panels are connected to the boost assembly and the buck assembly respectively, the photovoltaic controller is connected to the buck assembly and the battery in the vehicle respectively, and the boost assembly is connected to the high-voltage interlocking assembly in the photovoltaic charging unit; The high-voltage interlocking component in the power battery unit is connected to the high-voltage interlocking component in the photovoltaic charging unit, and the high-voltage interlocking component in the power battery unit, the high-voltage interlocking component in the photovoltaic charging unit and the photovoltaic controller form a high-voltage interlocking loop.

15. The photovoltaic high-voltage charging system according to claim 14, characterized in that: The high-voltage interlock assembly in the power battery unit is connected to the power battery in the power battery unit.

16. The photovoltaic high-voltage charging system according to claim 14, characterized in that: The high-voltage interlocking assembly in the photovoltaic charging unit includes a twenty-first high-voltage interlocking assembly and a twenty-second high-voltage interlocking assembly; The high-voltage interlock assembly in the power battery unit includes a twenty-third high-voltage interlock assembly and a twenty-fourth high-voltage interlock assembly; The high-voltage interlocking component in the power battery unit, the high-voltage interlocking component in the photovoltaic charging unit, and the photovoltaic controller form a high-voltage interlocking loop, including: The first low-voltage end of the 24th high-voltage interlocking assembly is connected to the first low-voltage end of the photovoltaic controller, the second low-voltage end of the 24th high-voltage interlocking assembly is connected to the first low-voltage end of the 23rd high-voltage interlocking assembly, the second low-voltage end of the 23rd high-voltage interlocking assembly is connected to the first low-voltage end of the 21st high-voltage interlocking assembly, the second low-voltage end of the 21st high-voltage interlocking assembly is connected to the first low-voltage end of the 22nd high-voltage interlocking assembly, and the second low-voltage end of the 22nd high-voltage interlocking assembly is connected to the second low-voltage end of the photovoltaic controller.

17. The photovoltaic high-voltage charging system according to claim 16, characterized in that: The boost component is connected to the high-voltage interlocking component in the photovoltaic charging unit, and includes: The output positive pole of the boost assembly is connected to the first high-voltage end of the twenty-first high-voltage interlock assembly, and the output negative pole of the boost assembly is connected to the first high-voltage end of the twenty-second high-voltage interlock assembly.

18. The photovoltaic high-voltage charging system according to claim 17, characterized in that: The high-voltage interlock assembly in the power battery unit is connected to the power battery in the power battery unit, including: The positive electrode of the power battery is connected to the first high-voltage terminal of the twenty-third high-voltage interlocking assembly, and the negative electrode of the power battery is connected to the first high-voltage terminal of the twenty-fourth high-voltage interlocking assembly.

19. The photovoltaic high-voltage charging system according to claim 18, characterized in that: The high-voltage interlocking assembly in the power battery unit is connected to the high-voltage interlocking assembly in the photovoltaic charging unit, including: The second high-voltage end of the 23rd high-voltage interlock assembly is connected to the second high-voltage end of the 21st high-voltage interlock assembly, and the second high-voltage end of the 24th high-voltage interlock assembly is connected to the second high-voltage end of the 22nd high-voltage interlock assembly.

20. A photovoltaic high-voltage charging system, characterized in that: include: Power battery unit, high-voltage power distribution unit and photovoltaic charging unit; The photovoltaic charging unit includes a photovoltaic panel, a boost component, a buck component, a photovoltaic controller and a high-voltage interlocking component; The photovoltaic panels are connected to the boost assembly and the buck assembly respectively, the photovoltaic controller is connected to the buck assembly and the battery in the vehicle respectively, and the boost assembly is connected to the high-voltage interlocking assembly in the photovoltaic charging unit; The high-voltage interlocking assembly in the power battery unit is connected to the high-voltage interlocking assembly in the high-voltage power distribution unit; The high-voltage interlocking component in the high-voltage power distribution unit is connected to the high-voltage interlocking component in the photovoltaic charging unit; The high-voltage interlocking component in the high-voltage power distribution unit, the high-voltage interlocking component in the photovoltaic charging unit and the photovoltaic controller form a high-voltage interlocking loop.

21. The photovoltaic high-voltage charging system according to claim 20, characterized in that: The high-voltage interlocking assembly in the power battery unit is connected to the power battery in the power battery unit; The high-voltage interlocking assembly in the high-voltage power distribution unit is connected to the load in the high-voltage power distribution unit.

22. The photovoltaic high-voltage charging system according to claim 20, characterized in that: The high-voltage interlocking assembly in the photovoltaic charging unit includes a twenty-fifth high-voltage interlocking assembly and a twenty-sixth high-voltage interlocking assembly; The high-voltage interlocking assembly in the high-voltage power distribution unit includes a twenty-seventh high-voltage interlocking assembly, a twenty-eighth high-voltage interlocking assembly, a twenty-ninth high-voltage interlocking assembly, and a thirtieth high-voltage interlocking assembly; The high-voltage interlocking component in the high-voltage power distribution unit, the high-voltage interlocking component in the photovoltaic charging unit, and the photovoltaic controller form a high-voltage interlocking circuit, including: The first low-voltage end of the twenty-eighth high-voltage interlocking assembly is connected to the first low-voltage end of the photovoltaic controller, the second low-voltage end of the twenty-eighth high-voltage interlocking assembly is connected to the first low-voltage end of the twenty-seventh high-voltage interlocking assembly, the second low-voltage end of the twenty-seventh high-voltage interlocking assembly is connected to the first low-voltage end of the twenty-fifth high-voltage interlocking assembly, the second low-voltage end of the twenty-fifth high-voltage interlocking assembly is connected to the first low-voltage end of the twenty-sixth high-voltage interlocking assembly, and the second low-voltage end of the twenty-sixth high-voltage interlocking assembly is connected to the second low-voltage end of the photovoltaic controller.

23. The photovoltaic high-voltage charging system according to claim 22, characterized in that: The boost component is connected to the high-voltage interlocking component in the photovoltaic charging unit, and includes: The output positive pole of the boost assembly is connected to the first high-voltage end of the twenty-fifth high-voltage interlock assembly, and the output negative pole of the boost assembly is connected to the first high-voltage end of the twenty-sixth high-voltage interlock assembly.

24. The photovoltaic high-voltage charging system according to claim 23, characterized in that: The high-voltage interlock assembly in the power battery unit includes a thirty-first high-voltage interlock assembly and a thirty-second high-voltage interlock assembly; The high-voltage interlocking assembly in the power battery unit is connected to the high-voltage interlocking assembly in the high-voltage power distribution unit, including: The second high-voltage end of the thirty-first high-voltage interlock assembly is connected to the second high-voltage end of the thirtieth high-voltage interlock assembly, and the second high-voltage end of the thirty-second high-voltage interlock assembly is connected to the second high-voltage end of the twenty-ninth high-voltage interlock assembly; The high-voltage interlock assembly in the power battery unit is connected to the power battery in the power battery unit, including: The positive electrode of the power battery is connected to the first high-voltage terminal of the thirty-first high-voltage interlocking assembly, and the negative electrode of the power battery is connected to the first high-voltage terminal of the thirty-second high-voltage interlocking assembly.

25. The photovoltaic high-voltage charging system according to claim 24, characterized in that: The high-voltage interlocking component in the high-voltage power distribution unit is connected to the high-voltage interlocking component in the photovoltaic charging unit, including: The first high-voltage end of the twenty-seventh high-voltage interlock assembly is connected to the first high-voltage end of the twenty-fifth high-voltage interlock assembly, and the first high-voltage end of the twenty-eighth high-voltage interlock assembly is connected to the first high-voltage end of the twenty-sixth high-voltage interlock assembly; The second high-voltage end of the twenty-seventh high-voltage interlock assembly is connected to the second high-voltage end of the thirtieth high-voltage interlock assembly, and the second high-voltage end of the twenty-eighth high-voltage interlock assembly is connected to the second high-voltage end of the twenty-ninth high-voltage interlock assembly; The high-voltage interlocking assembly in the high-voltage power distribution unit is connected to a load in the high-voltage power distribution unit, including: The second high-voltage end of the twenty-seventh high-voltage interlocking assembly is connected to the positive electrode of the load, and the second high-voltage end of the twenty-eighth high-voltage interlocking assembly is connected to the negative electrode of the load.

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