Power supply system and vehicle

Abstract

The utility model discloses a power supply system and a vehicle. The power supply system comprises a voltage stabilizing circuit, an inverter, a DC / DC converter and a vehicle-mounted charging unit. The input end of the voltage stabilizing circuit is electrically connected with the solar battery, the output end of the voltage stabilizing circuit is electrically connected with the input end of the inverter and the storage battery, the output end of the voltage stabilizing circuit is further electrically connected with the power battery through the DC / DC converter, and the storage battery is used for supplying power to a low-voltage electric appliance; the output end of the inverter is electrically connected with the alternating current load, the first end of the vehicle-mounted charging unit is electrically connected with the first charging interface, and the second end of the vehicle-mounted charging unit is electrically connected with the power battery; and the storage battery is also electrically connected with the power battery through the DC / DC converter. According to the embodiment of the invention, the battery can be charged by solar energy, and the electric quantity of the battery can be increased.

Description

Technical Field

[0001] The present application relates to the field of power supply control technology, and in particular to a power supply system and a vehicle. Background Art

[0002] With the development of global automobile electrification, the development of new energy vehicles is getting faster and faster. As a result, users' usage scenarios are becoming more diverse and their comfort requirements are becoming higher and higher, and anxiety about the battery power and mileage of the vehicles is also coming. Utility Model Content

[0003] The embodiments of the present application provide a power supply system and a vehicle, which can use solar energy to supplement the battery and increase the battery power.

[0004] In a first aspect, an embodiment of the present application provides a power supply system, including a voltage stabilizing circuit, an inverter, a DC / DC converter and an on-board charging unit; the input end of the voltage stabilizing circuit is electrically connected to a solar cell, the output end of the voltage stabilizing circuit is electrically connected to an input end of the inverter and a battery, the output end of the voltage stabilizing circuit is also electrically connected to a power battery through a DC / DC converter, and the battery is used to supply power to low-voltage electrical appliances; the output end of the inverter is electrically connected to an AC load, a first end of the on-board charging unit is electrically connected to a first charging interface, and a second end of the on-board charging unit is electrically connected to the power battery; the battery is also electrically connected to the power battery through a DC / DC converter.

[0005] In a possible implementation manner of the first aspect, the power supply system further includes a range extender and a drive module, the range extender is electrically connected to the power battery and the drive module, and the power battery is electrically connected to the drive module.

[0006] In a possible implementation manner of the first aspect, the output end of the inverter and the first end of the on-board charging unit are also electrically connected to the first power interface.

[0007] In a possible implementation of the first aspect, a first end of the on-board charging unit is electrically connected to the first charging interface through a first switch;

[0008] The output end of the inverter and the first end of the on-board charging unit are both electrically connected to the first power interface through the second switch;

[0009] The output end of the inverter is electrically connected to the first end of the on-board charging unit through the third switch.

[0010] In a possible implementation manner of the first aspect, the power supply system further includes a first switch group, and the first switch group is electrically connected between the second charging interface and the power battery.

[0011] In a possible implementation manner of the first aspect, the power supply system further includes a heating module, the heating module is electrically connected to the power battery via a fourth switch, and the heating module is disposed close to the power battery.

[0012] In a possible implementation manner of the first aspect, the power battery further includes a plurality of second power interfaces, and the second power interfaces are electrically connected to the power battery.

[0013] Based on the same inventive concept, in a second aspect, the present application also provides a vehicle, comprising:

[0014] Power battery;

[0015] Batteries;

[0016] Solar cells;

[0017] And, a power supply system as described in any embodiment of the first aspect.

[0018] In a possible implementation of the second aspect, the vehicle further includes a battery controller and a vehicle controller;

[0019] The battery controller is configured to: when determining that the battery needs solar power supplement, send a power supplement request signal to the vehicle controller;

[0020] The vehicle controller is configured to control the voltage stabilizing circuit to supply power to the battery after receiving a power replenishment request signal.

[0021] In a possible implementation of the second aspect, the vehicle further includes a battery management system, which is configured to: monitor the voltage of the power battery and the state of the on-board charging unit;

[0022] The vehicle controller is also configured to: after receiving a power replenishment request signal, and when the on-board charging unit is in an idle state and the voltage of the power battery is within a preset power replenishment range, control the voltage stabilizing circuit to supply power to the power battery.

[0023] According to the power supply system and vehicle provided by the embodiment of the present application, by setting a voltage stabilizing circuit, an inverter, a DC / DC converter and an on-board charging unit, the voltage stabilizing circuit can output the voltage from the solar cell after stabilizing the voltage, and the voltage output by the voltage stabilizing circuit can be transmitted to the battery in one way, so that the battery can be supplemented with electricity converted from solar energy; the voltage output by the voltage stabilizing circuit can be transmitted to the DC / DC converter in another way, and the power battery can be charged after the DC / DC converter is boosted, so that the power battery can be supplemented with electricity converted from solar energy; therefore, the battery can be supplemented with electricity from solar energy, and the battery power can be increased, which is conducive to increasing the vehicle mileage. In addition, the voltage of the power battery can also be charged to the battery after the DC / DC converter is stepped down, so that the DC / DC converter can be used not only when the solar energy supplements the power battery, but also when the power battery charges the battery, so that the function of supplementing electricity with solar cells is integrated without changing the original topological structure, and it has a high degree of integration.

[0024] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features and the accompanying drawings are not drawn to scale.

[0026] Figure 1 A schematic diagram of the structure of a power supply system provided in an embodiment of the present application is shown;

[0027] Figure 2 Another structural schematic diagram of a power supply system provided in an embodiment of the present application is shown;

[0028] Figure 3 A schematic diagram of the solar power replenishment topology in a vehicle provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0031] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "electrically connected", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] New energy vehicles may be equipped with power batteries and storage batteries. The power battery can be used to drive the motor to drive the vehicle, and the storage battery can supply power to low-voltage electrical appliances on the vehicle. However, if the power battery is low-powered, the vehicle's mileage will be affected, and if the storage battery is low-powered, the operation of low-voltage electrical appliances will be affected, thereby affecting the user experience.

[0033] In order to solve the above technical problems, the embodiments of the present application provide a power supply system and a vehicle. The embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0034] First, the power supply system provided in the embodiment of the present application is introduced.

[0035] Figure 1 A schematic diagram of the structure of the power supply system provided in the embodiment of the present application is shown. Figure 1 As shown, the power supply system 10 provided in the embodiment of the present application includes a voltage stabilizing circuit 1, an inverter 2, a DC / DC converter 3 and an on-board charging unit 4. The power supply system 10 is electrically connected to a solar cell 20, a power battery 30, and a storage battery 40. The DC / DC converter 3 and the on-board charging unit 4 are two-in-one functional modules of DC / DC and OBC. The solar module includes a solar cell 20, a voltage stabilizing circuit 1, and an inverter 2.

[0036] The input end of the voltage stabilizing circuit 1 is electrically connected to the solar cell 20, and the output end of the voltage stabilizing circuit 1 is electrically connected to the input end of the inverter 2 and the battery 40. In addition, the output end of the voltage stabilizing circuit 1 can also be electrically connected to the power battery 30 through the DC / DC converter 3 in the DC / DC and OBC two-in-one. The battery 40 is used to supply power to low-voltage electrical appliances. The output end of the inverter 2 is electrically connected to the AC load ( Figure 1 The inverter 2 can be used to output an AC voltage to supply power to the AC load. The first end of the on-board charging unit 4 is electrically connected to the first charging interface 51, and the second end of the on-board charging unit 4 is electrically connected to the power battery 30. The storage battery 40 is also electrically connected to the power battery 30 through the DC / DC converter 3.

[0037] For example, the solar cell 20 contains electric energy converted from solar energy, and the voltage output by the solar cell 20 is unstable. The input end of the voltage stabilizing circuit 1 receives the voltage from the solar cell 20 and outputs a stable voltage. For example, the voltage stabilizing circuit 1 can stably output a voltage of about 13V. For example, the maximum output voltage of the voltage stabilizing circuit 1 can be 14V.

[0038] The vehicle is generally provided with an on-board charging unit 4, which can be called an on-board charger (OBC). The OBC is a circuit that converts AC power into DC power. For example, when the first charging interface 51 is connected to a charging pile, the on-board charging unit 4 can convert the AC voltage from the charging pile into the DC voltage required by the power battery 30.

[0039] The voltage of the solar cell 20 is generally a DC voltage, in which case the voltage output by the voltage stabilizing circuit 1 is a DC voltage. The voltage stabilizing circuit 1 is electrically connected to an AC load via an inverter 2, and the inverter 2 can convert the DC power from the solar cell 20 into AC power and supply power to the AC load.

[0040] It is understandable that in the path of using solar cells to supplement power to the power battery, the structure of the original DC / DC converter 3 is used, so that the function of supplementing power using solar cells 20 is integrated without changing the original topological structure.

[0041] Exemplarily, the onboard charging unit 4 may have a bidirectional conversion function, for example, it may also convert direct current into alternating current. For example, the onboard charging unit 4 may convert direct current from the power battery into alternating current to supply power to the alternating current power equipment on the vehicle.

[0042] The DC voltage outputted from the output terminal of the voltage stabilizing circuit 1 can be used to supplement the battery 40 without being subjected to an inversion process.

[0043] The storage battery 40 may also be called a small battery, for example, its maximum voltage may be 12 V. The power battery 30 is a high voltage battery, and its maximum voltage may be hundreds of volts or even thousands of volts.

[0044] The DC / DC converter 3 can convert direct current of one amplitude into direct current of another amplitude. For example, the DC / DC converter 3 can charge the storage battery 40 after stepping down the voltage from the power battery 30. In addition, the DC / DC converter 3 can charge the power battery after stepping up the voltage from the solar module.

[0045] In the embodiment of the present application, by setting a voltage stabilizing circuit, an inverter, a DC / DC converter and an on-board charging unit, the voltage stabilizing circuit can output the voltage from the solar cell after stabilizing the voltage, and the voltage output by the voltage stabilizing circuit can be transmitted to the battery, so that the battery can be supplemented with electricity converted from solar energy; the voltage output by the voltage stabilizing circuit can be transmitted to the DC / DC converter in another way, and the power battery can be charged after being boosted by the DC / DC converter, so that the power battery can be supplemented with electricity converted from solar energy; therefore, the battery can be supplemented with electricity from solar energy, which can increase the battery power and is conducive to increasing the vehicle mileage. In addition, the voltage of the power battery can also be charged to the battery after being stepped down by the DC / DC converter. In this way, the DC / DC converter can be used not only when the solar energy supplements the power battery, but also when the power battery charges the battery. In this way, the function of supplementing electricity using solar cells is integrated without changing the original topological structure, and it has a high degree of integration.

[0046] It should be noted that the present application does not limit the specific circuit structures of the voltage stabilizing circuit 1, the inverter 2, the DC / DC converter 3 and the on-board charging unit 4, as long as the functions of the above circuits can be achieved.

[0047] Those skilled in the art have been committed to studying how to increase the mileage of new energy vehicles to reduce users' mileage anxiety. Figure 2 Another schematic diagram of the structure of the power supply system provided by the embodiment of the present application is shown. In some optional embodiments, such as Figure 2 As shown, the power supply system further includes a range extender 6 and a drive module 7 . The range extender 6 is electrically connected to the power battery 30 and the drive module 7 . The power battery 30 is electrically connected to the drive module 7 .

[0048] The range extender 6 is an electric vehicle component that can provide additional electric energy, thereby enabling the electric vehicle to increase its driving range. The range extender 6 may include an engine and a generator.

[0049] The driving module 7 may include a motor and a control unit (MCU) for controlling the motor. The electric energy generated by the range extender 6 may be supplied to the motor in the driving module 7 to drive the motor to rotate, and may also be supplied to charge the power battery 30.

[0050] The driving module 7 may include a first driving module 71 and a second driving module 72. For example, the first driving module 71 may be a front driving module, and the second driving module 72 may be a rear driving module. The first driving module 71 and the second driving module 72 may both include a motor and an MCU.

[0051] It is understandable that the electric vehicle integrated with the range extender 6 is an extended-range electric vehicle, which can use other energy sources (such as gasoline) to replenish electricity when the power battery is insufficient.

[0052] In the embodiment of the present application, the power supply system is also integrated with a range extender, thereby increasing the mileage of the vehicle and reducing mileage anxiety.

[0053] In some optional embodiments, such as Figure 2 As shown, the output end of the inverter 2 and the first end of the onboard charging unit 4 are also electrically connected to the first power interface 81. The first power interface 81 can be used to connect high-voltage electrical appliances, for example, the first power interface 81 can be used for 220V electrical appliances.

[0054] In the embodiment of the present application, the output end of the inverter 2 is electrically connected to the first power interface 81, so that the inverter 2 can also convert the electricity from the solar cell and supply power to the electrical appliance through the first power interface 81. In addition, as described above, the on-board charging unit 4 can have a bidirectional conversion function. When the power battery 30 is not depleted, the on-board charging unit 4 can convert the power from the power battery 30 into AC power and transmit it to the first power interface 81 to supply power to the electrical appliance.

[0055] In some embodiments, the first end of the vehicle charging unit 4 is electrically connected to the first charging interface 51 through the first switch KA1; the output end of the inverter 2 and the first end of the vehicle charging unit 4 are electrically connected to the first power interface 81 through the second switch KA2; the output end of the inverter 2 is electrically connected to the first end of the vehicle charging unit 4 through the third switch KA3.

[0056] In the embodiment of the present application, when the first switch KA1 is turned on, the electric energy from the first charging interface 51 can be converted by the on-board charging unit 4 to charge the power battery 30; when the second switch KA2 is turned on, the power of the power battery 30 can be supplied to the first power interface 81 via the on-board charging unit 4; when the third switch KA3 is turned on, the power of the solar cell can be supplied to the power battery 30 after passing through the voltage stabilizing circuit, the inverter, and the on-board charging unit in sequence; when the second switch KA2 and the third switch KA3 are turned on, the power of the solar cell can also be supplied to the first power interface 81 after passing through the voltage stabilizing circuit and the inverter in sequence. By setting multiple switches, different power supply paths can be easily controlled independently.

[0057] In some embodiments, Figure 2 As shown, the power supply system further includes a first switch group, which is electrically connected between the second charging interface 52 and the power battery 30. Exemplarily, the first switch group may include a fifth switch K5 and a sixth switch K6, the fifth switch K5 is electrically connected between the positive electrode of the power battery 30 and the positive electrode of the second charging interface 52, and the sixth switch K6 is electrically connected between the negative electrode of the power battery 30 and the negative electrode of the second charging interface 52.

[0058] Exemplarily, the first charging interface 51 may be a slow charging interface, and the second charging interface 52 may be a fast charging interface. When charging the power battery 30 through the second charging interface 52 , the on-board charging unit 4 is not passed.

[0059] In the embodiment of the present application, a second charging interface supporting fast charging is also integrated, and different charging modes can be selected for charging.

[0060] In some embodiments, Figure 2 As shown, the power supply system further includes a heating module 9 , which is electrically connected to the power battery 30 via a fourth switch K4 , and the heating module 9 is disposed close to the power battery 30 .

[0061] Exemplarily, the heating module 9 may include a resistance wire. When current flows through the resistance wire, the resistance wire increases steadily, thereby achieving heating of the power battery.

[0062] Exemplarily, the fourth switch K4 may be electrically connected between the positive electrode of the power battery and the first end of the heating module 9 .

[0063] In the embodiment of the present application, the power battery can be heated by providing a heating module to ensure that the power battery is in a good state.

[0064] In some embodiments, Figure 2 As shown, the power battery further includes a plurality of second power interfaces 82, and the second power interfaces 82 are electrically connected to the power battery 30. The second power interfaces 82 are connected to high-voltage electrical appliances. For example, Figure 2 Three second electrical interfaces 82 are shown, one second electrical interface 82 can be used to connect a compressor, one second electrical interface 82 can be used to connect a first thermistor (such as a PTC resistor), and one second electrical interface 82 can be used to connect a second thermistor.

[0065] For example, Figure 2 As shown, a main positive switch K1 is connected in series on the positive path of the power battery 30 , and a main negative switch K2 is connected in series on the negative path of the power battery 30 . The main positive switch K1 and the main negative switch K2 are electrically connected between the power battery 30 and other functional modules.

[0066] like Figure 2 As shown, the power supply system may further include a pre-charging branch, which includes a resistor, a switch K3 and a diode connected in series. In other examples, the pre-charging branch may only include a resistor and a switch K3 connected in series. The pre-charging branch is connected in parallel with the main positive switch K1.

[0067] It should be noted that the switch in the embodiment of the present application may include a relay, an insulated gate bipolar transistor (IGBT) or other types of switching devices, which is not limited in the present application.

[0068] For example, Figure 2 As shown, the power supply system further includes fuses FU1 to FU7, which can be disconnected when the current exceeds its threshold value, thereby providing protection.

[0069] It should be noted that the number and position of the fuses in the drawings of the present application are merely exemplary and are not intended to limit the present application. In addition, the current thresholds corresponding to the fuses at different positions may be determined according to actual conditions.

[0070] For example, Figure 2 As shown, different connectors can be selected for connections at different locations. For example, the connectors include quick-plug connectors with high-voltage interlocks, high-voltage screw-connected copper bars between the power battery and the high-voltage power distribution unit (PDU), low-voltage power terminals, etc.

[0071] For example, Figure 2 , multiple high-voltage sampling points are shown, at which voltage can be collected.

[0072] For example, Figure 2As shown, the power battery 30 constitutes the battery subsystem PACK, and the power supply system constitutes the domain control system (BDU+PDU). The domain control system includes a low-voltage signal control system and a high-voltage power distribution system. The domain control system and the power battery can be integrated in the same housing. This saves layout space, saves wiring harness connections between high-voltage systems, and reduces costs.

[0073] The battery subsystem and the domain control system constitute the domain control battery pack. The domain control battery pack is connected to the low-voltage control system of the vehicle through the low-voltage connector on the shell. The high-voltage charging and distribution system of the domain control battery pack is connected to the high-voltage electrical equipment connector of the vehicle through the high-voltage connector on the shell. The high-voltage electrical equipment are: fast and slow charging interface, PTC heating interface, upper installation interface (first power interface), air conditioning compressor interface, front and rear motor power interface, range extender module interface, and solar system interface.

[0074] Based on the same inventive concept, an embodiment of the present application also provides a vehicle. The vehicle provided in the embodiment of the present application includes a power battery; a storage battery; a solar cell; and a power supply system as described in any of the above embodiments. It can be understood that the vehicle has the beneficial effects of the power supply system provided in the embodiment of the present application, and the specific description of the power supply system in the above embodiments can be referred to, and this embodiment will not be repeated here.

[0075] It is understandable that when the vehicle's power supply system includes a range extender, the vehicle is an extended-range new energy vehicle equipped with a solar module. The vehicle has a solar module and a range extender module, and therefore is conducive to achieving energy conservation and environmental protection, convenient energy replenishment, worry-free battery life, low operating noise, and a good driving experience.

[0076] For example, the vehicle may be a motorhome. Compared with traditional fuel motorhomes, the range-extended new energy motorhome equipped with solar modules not only solves the energy efficiency problem of traditional motorhomes, but also solves the mileage problem of pure electric motorhomes, and reduces the noise problem, making the motorhome more comfortable.

[0077] In some embodiments, Figure 3 As shown, the vehicle also includes a battery controller PDC and a vehicle controller VCU.

[0078] The battery controller PDC is configured to send a supplementary power request signal to the vehicle controller VCU when it is determined that the battery 40 needs to be supplemented by solar energy.

[0079] The vehicle controller VCU is configured to: after receiving a power replenishment request signal from the battery controller PDC, control the voltage stabilizing circuit 1 to supply power to the battery 40 .

[0080] Exemplarily, the voltage output by the voltage stabilizing circuit 1 can be used as an enable signal or a wake-up signal of the battery controller PDC. After the battery controller PDC is awakened, it can monitor the power level of the battery 40 and determine whether solar power supplementation is needed.

[0081] When the battery 40 does not need to be charged, the battery controller PDC can send a charging stop signal to the vehicle controller VCU. The vehicle controller VCU is also configured to: after receiving the charging request signal from the battery controller PDC, disconnect the power supply path from the voltage stabilizing circuit 1 to the battery 40.

[0082] Exemplarily, the voltage stabilizing circuit 1 may include a relay for controlling whether the voltage stabilizing circuit 1 and the battery 40 are connected. After receiving a power replenishment request signal from the battery controller PDC, the vehicle controller VCU may control the relay to be turned on so that the voltage stabilizing circuit 1 supplies power to the battery 40. After receiving a power replenishment stop signal from the battery controller PDC, the vehicle controller VCU may control the relay to be turned off so as to cut off the power supply path from the voltage stabilizing circuit 1 to the battery 40.

[0083] In some embodiments, Figure 3 As shown, the vehicle also includes a battery management system BMS, which is configured to: monitor the voltage of the power battery and the status of the on-board charging unit; the vehicle controller VCU is also configured to: after receiving a power replenishment request signal, and when the on-board charging unit is in an idle state and the voltage of the power battery is within a preset power replenishment range, control the voltage stabilizing circuit to supply power to the power battery.

[0084] For example, when the on-board charging unit is in a state of charging the power battery, discharging to the outside, or the AC line connected to the on-board charging unit has other AC inputs, such as the mains input from the first charging interface, it is not allowed to access solar energy to supplement the power battery. In addition, when the power battery voltage is not within the allowable supplement range, it is not allowed to access solar energy to supplement the power battery.

[0085] Exemplarily, CAN communication or 485 communication can be performed between the vehicle controller VCU and the battery controller PDC.

[0086] For example, Figure 3 As shown, it can be set as required: the inverter 2 can also be connected to the mains power grid and the AC load in the vehicle.

[0087] It should be noted that the controller in the present application can be a chip or circuit that performs related actions according to characteristic instructions. For example, the controller can be a microcontroller unit (MCU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. For another example, the controller can include an external clock, a random access memory (RAM), a read-only memory (ROM), etc. This application does not limit the specific structure of the controller.

[0088] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0089] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A power supply system, characterized in that: Including voltage stabilizing circuit, inverter, DC / DC converter and vehicle charging unit; The input end of the voltage stabilizing circuit is electrically connected to the solar cell, the output end of the voltage stabilizing circuit is electrically connected to the input end of the inverter and the battery, the output end of the voltage stabilizing circuit is also electrically connected to the power battery through the DC / DC converter, and the battery is used to supply power to low-voltage electrical appliances; The output end of the inverter is electrically connected to an AC load; The first end of the on-board charging unit is electrically connected to the first charging interface, and the second end of the on-board charging unit is electrically connected to the power battery; The storage battery is also electrically connected to the power battery through the DC / DC converter.

2. The power supply system according to claim 1, characterized in that: The power supply system further includes a range extender and a drive module. The range extender is electrically connected to the power battery and the drive module. The power battery is electrically connected to the drive module.

3. The power supply system according to claim 1 or 2, characterized in that: The output end of the inverter and the first end of the on-board charging unit are also electrically connected to the first power interface.

4. The power supply system according to claim 3, characterized in that: The first end of the vehicle-mounted charging unit is electrically connected to the first charging interface through a first switch; The output end of the inverter and the first end of the on-board charging unit are both electrically connected to the first power interface through a second switch; The output end of the inverter is electrically connected to the first end of the on-board charging unit through a third switch.

5. The power supply system according to claim 1 or 2, characterized in that: The power supply system further includes a first switch group, which is electrically connected between the second charging interface and the power battery.

6. The power supply system according to claim 5, characterized in that: The power supply system further includes a heating module, the heating module is electrically connected to the power battery via a fourth switch, and the heating module is disposed close to the power battery.

7. The power supply system according to claim 1 or 2, characterized in that: The power battery further includes a plurality of second power interfaces, and the second power interfaces are electrically connected to the power battery.

8. A vehicle, characterized in that: include: Power battery; Batteries; Solar cells; And, the power supply system according to any one of claims 1 to 7.

9. The vehicle according to claim 8, characterized in that The vehicle also includes a battery controller and a vehicle controller; The battery controller is configured to: when determining that the battery needs solar power supplement, send a power supplement request signal to the vehicle controller; The vehicle controller is configured to: after receiving the power replenishment request signal, control the voltage stabilizing circuit to supply power to the battery.

10. The vehicle according to claim 9, characterized in that The vehicle further includes a battery management system configured to: monitor the voltage of the power battery and the state of the on-board charging unit; The vehicle controller is also configured to: after receiving the power replenishment request signal, and when the on-board charging unit is in an idle state and the voltage of the power battery is within a preset power replenishment range, control the voltage stabilizing circuit to supply power to the power battery.

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