Photovoltaic power supply system of vehicle, control method, device and storage medium thereof

Abstract

The application discloses a photovoltaic power supply system of a vehicle and a control method, equipment and computer readable storage medium thereof, and comprises a photovoltaic panel, a photovoltaic controller, a bidirectional direct-current converter and a power battery heating device; the photovoltaic power generation of the photovoltaic panel is connected to the photovoltaic controller, the photovoltaic controller is used for supplying power to a load, charging a storage battery of the vehicle and connecting the photovoltaic power generation to a high-voltage network of the vehicle through the bidirectional direct-current converter after voltage boosting, and the load comprises the power battery heating device; and the power battery heating device is used for heating the power battery of the vehicle. The application provides an efficient photovoltaic power supply system of a vehicle and a control scheme, fully utilizes the power generation of photovoltaic, and improves the utilization rate of photovoltaic power generation.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle photovoltaic technology, and particularly relates to a photovoltaic power supply system of a vehicle, a control method, equipment and a computer readable storage medium. BACKGROUND

[0002] In recent years, cars have become one of the indispensable means of transportation in people's lives. While people enjoy the convenience brought by cars, the environmental pollution caused by cars is also increasingly prominent. As one of the most abundant renewable energy sources, solar energy is green and pollution-free, inexhaustible, and its combination with new energy vehicles provides assistance for energy saving and emission reduction. At present, there are some application schemes of photovoltaic on cars, but the existing photovoltaic car scheme has the problem of low utilization rate of photovoltaic power generation, causing waste of photovoltaic power generation. SUMMARY

[0003] The main purpose of the present application is to provide a photovoltaic power supply system of a vehicle, a control method, equipment and a computer readable storage medium, which aims to provide an efficient photovoltaic power supply system of a vehicle and a control scheme, to make full use of the power generation of photovoltaic and improve the utilization rate of photovoltaic power generation.

[0004] To achieve the above-mentioned purpose, a photovoltaic power supply system of a vehicle, the photovoltaic power supply system of the vehicle comprising:

[0005] a photovoltaic panel, a photovoltaic controller, a bidirectional DC converter and a power battery heating device;

[0006] The photovoltaic power generation of the photovoltaic panel is connected to the photovoltaic controller, the photovoltaic controller is used for supplying power to a load, charging a battery of the vehicle and connecting the photovoltaic power generation to a high-voltage network of the vehicle through the bidirectional DC converter, the load comprising the power battery heating device;

[0007] The power battery heating device is used for heating the power battery of the vehicle.

[0008] Optionally, the power battery heating device comprises a heat preservation box with a heating function and a temperature sensor group, a water outlet end of the heat preservation box is connected to a water inlet end of the power battery, a water inlet end of the heat preservation box is connected to a water outlet end of the power battery, and the temperature sensor group comprises a first temperature sensor for detecting the water inlet temperature of the power battery, a second temperature sensor for detecting the water outlet temperature of the power battery and a third temperature sensor for detecting the water outlet temperature of the heat preservation box.

[0009] The photovoltaic controller is used for controlling the opening and closing of the heating function of the heat preservation box according to the temperature values measured by each temperature sensor in the temperature sensor group.

[0010] Optionally, the power battery heating device further comprises a switching assembly, the heat preservation box is connected in parallel with a heat exchanger on a cooling loop in a power battery cooling system of the vehicle, and is used to replace the heat exchanger to form a heating loop, and the switching assembly is used to control the connection of the cooling loop or the heating loop; and the load further comprises a battery loop water pump in the cooling loop.

[0011] Furthermore, the application also provides a control method applied to a photovoltaic power supply system of a vehicle, wherein the photovoltaic power supply system comprises a photovoltaic panel, a photovoltaic controller, a bidirectional direct-current converter and a power battery heating device, and the control method comprises the following steps:

[0012] supplying power to a load connected to the photovoltaic controller through photovoltaic power generation of the photovoltaic panel;

[0013] in the case that the power generation power of the photovoltaic panel is greater than the load power of the load connected to the photovoltaic controller and the battery meets a preset charging condition, supplying power to the load connected to the photovoltaic controller through photovoltaic power generation and charging the battery of the vehicle through photovoltaic power generation;

[0014] in the case that the power generation power of the photovoltaic panel is greater than the load power of the load connected to the photovoltaic controller and the battery does not meet the preset charging condition, supplying power to the load connected to the photovoltaic controller through photovoltaic power generation and connecting the photovoltaic power generation to a high-voltage network of the vehicle after the photovoltaic power generation is boosted by the bidirectional direct-current converter.

[0015] Optionally, the control method further comprises the following steps:

[0016] in the case that the vehicle is in a non-running state, after receiving a power battery preheating instruction, controlling the power battery heating device to heat the power battery.

[0017] Optionally, the power battery heating device further comprises a heat preservation box with a heating function, a temperature sensor group and a switching assembly, the temperature sensor group comprises a second temperature sensor, the heat preservation box is connected in parallel with a heat exchanger on a cooling loop in a power battery cooling system of the vehicle, and is used to replace the heat exchanger to form a heating loop;

[0018] the step of controlling the power battery heating device to heat the power battery comprises the following steps:

[0019] controlling the switching assembly to connect the heating loop;

[0020] if the temperature value measured by the second temperature sensor is greater than or equal to a first preset threshold value, controlling the battery loop water pump in the cooling loop to be turned off;

[0021] If the temperature value measured by the second temperature sensor is less than the first preset threshold, the battery loop water pump is controlled to start;

[0022] The control method further comprises:

[0023] In the case that the vehicle is in the running state, the switching assembly is controlled to turn on the cooling loop.

[0024] Optionally, the control method further comprises:

[0025] The temperature data measured by the temperature sensors in the temperature sensor group is monitored, and the heating function of the incubator is controlled to be turned on or off according to the temperature data, so as to control the water temperature of the incubator to be within a set range.

[0026] Optionally, the temperature sensor group further comprises a first temperature sensor and a third temperature sensor, and the step of monitoring the temperature data measured by the temperature sensors in the temperature sensor group and controlling the heating function of the incubator to be turned on or off according to the temperature data comprises:

[0027] In the case that the vehicle is in the non-running state, the temperature values measured by the first temperature sensor, the second temperature sensor and the third temperature sensor are monitored respectively;

[0028] If the first temperature value measured by the first temperature sensor is less than a second preset threshold and the third temperature value measured by the third temperature sensor is less than a third preset threshold, the heating function of the incubator is controlled to be turned on;

[0029] If the first temperature value is greater than or equal to the second preset threshold, or the third temperature value is greater than or equal to the third preset threshold, it is determined whether the second temperature value measured by the second temperature sensor is greater than or equal to the second preset threshold;

[0030] If the second temperature value is greater than or equal to the second preset threshold, the heating function of the incubator is controlled to be turned off;

[0031] If the second temperature value is less than the second preset threshold, the heating function of the incubator is controlled to be turned on.

[0032] Optionally, the control method further comprises:

[0033] In the case that the vehicle is in the non-running state, the first temperature sensor, the second temperature sensor, the third temperature sensor, the switching assembly, the battery loop water pump and the incubator are connected to the photovoltaic controller to be powered by the photovoltaic power generation;

[0034] In the case that the vehicle is in the running state, the first temperature sensor, the second temperature sensor, the switching assembly and the battery circuit water pump are switched to be powered and controlled by the low-voltage network of the vehicle.

[0035] Optionally, the control method further comprises:

[0036] If the photovoltaic power generation is not connected to the high-voltage network of the vehicle through the bidirectional DC converter, and the voltage of the battery is greater than or equal to the first preset voltage, it is determined that the battery does not meet the preset charging condition.

[0037] If the photovoltaic power generation is not connected to the high-voltage network of the vehicle through the bidirectional DC converter, and the voltage of the battery is less than the first preset voltage, it is determined that the battery meets the preset charging condition.

[0038] If the photovoltaic power generation is connected to the high-voltage network of the vehicle through the bidirectional DC converter, and the voltage of the battery is less than the second preset voltage, it is determined that the battery meets the preset charging condition, wherein the second preset voltage is less than the first preset voltage.

[0039] If the photovoltaic power generation is connected to the high-voltage network of the vehicle through the bidirectional DC converter, and the voltage of the battery is greater than or equal to the second preset voltage, it is determined that the battery does not meet the preset charging condition.

[0040] Optionally, the control method further comprises:

[0041] In the case that the vehicle is in the running state, if the photovoltaic power generation is not connected to the high-voltage network of the vehicle through the bidirectional DC converter, and the voltage of the battery is less than the third preset voltage, the bidirectional DC converter is controlled to step down the high-voltage power of the high-voltage network of the vehicle to charge the battery, and the third preset voltage is less than the second preset voltage.

[0042] Optionally, in the case that the power generation power of the photovoltaic panel is greater than the load power connected to the photovoltaic controller and the battery does not meet the preset charging condition, the steps of supplying power to the load connected to the photovoltaic controller through photovoltaic power generation and connecting the photovoltaic power generation to the high-voltage network of the vehicle through the bidirectional DC converter include:

[0043] In the case that the power generation power of the photovoltaic panel is greater than the load power connected to the photovoltaic controller and the battery does not meet the preset charging condition, the allowable charging power of the power battery is obtained.

[0044] If the allowable charging power of the power battery is greater than the preset power, the photovoltaic power generation is used to supply power to the load connected to the photovoltaic controller and to charge the power battery by connecting the photovoltaic power generation to the high-voltage network of the vehicle after boosting by the bidirectional DC converter.

[0045] To achieve the above object, the application further provides a control device, which comprises a memory, a processor and a control program stored in the memory and executable on the processor, and the control program realizes the steps of the control method when executed by the processor.

[0046] In addition, to achieve the above object, the application further provides a computer readable storage medium, which stores a control program, and the control program realizes the steps of the control method when executed by a processor.

[0047] In the application, a photovoltaic power supply system of a vehicle is provided, which comprises a photovoltaic panel, a photovoltaic controller, a bidirectional DC converter and a power battery heating device; the photovoltaic power generation of the photovoltaic panel is connected to the photovoltaic controller, the photovoltaic controller is used to supply power to a load, charge a battery of the vehicle and connect the photovoltaic power generation to a high-voltage network of the vehicle after boosting by the bidirectional DC converter, and the load comprises the power battery heating device; and the power battery heating device is used to heat a power battery of the vehicle.

[0048] By using the photovoltaic power generation to heat the power battery, charge the battery of the vehicle and supply power to the high-voltage network of the vehicle, the photovoltaic power generation can be fully utilized, the utilization rate of the photovoltaic power generation is improved, the power battery can use the power generated by the photovoltaic panel to reduce the power consumption of the low-voltage system or the battery heating output, the burden of the power battery is reduced, the cruising range of the vehicle is indirectly improved, and the purpose of increasing the cruising range is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 A feasible new energy vehicle system diagram related to the embodiment of the application;

[0050] Figure 2 A physical connection structure diagram of a photovoltaic power supply system and a vehicle power system related to the embodiment of the application;

[0051] Figure 3 A communication signal diagram of a photovoltaic power supply system and a vehicle power system related to the embodiment of the application;

[0052] Figure 4 A flowchart of the third embodiment of the control method of the application;

[0053] Figure 5A power battery heating control flowchart related to an embodiment of the present application;

[0054] Figure 6 A temperature maintaining case opening and closing control flowchart in a vehicle non-running state related to an embodiment of the present application;

[0055] Figure 7 A temperature maintaining case opening and closing control flowchart in a vehicle running state related to an embodiment of the present application;

[0056] Figure 8 A photovoltaic power supply control flowchart related to an embodiment of the present application;

[0057] Figure 9 A hardware running environment structure diagram related to an embodiment of the present application.

[0058] The implementation, functional features and advantages of the present application will be further explained with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0059] It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

[0060] The first embodiment of the photovoltaic power supply system of the vehicle of the present application is proposed. In the embodiment, the photovoltaic power supply system of the vehicle comprises:

[0061] a photovoltaic panel, a photovoltaic controller, a bidirectional direct current converter and a power battery heating device;

[0062] The photovoltaic power generation of the photovoltaic panel is connected to the photovoltaic controller, the photovoltaic controller is used for supplying power to a load, charging a vehicle storage battery and connecting the photovoltaic power generation to a vehicle high voltage network through the bidirectional direct current converter, the load comprises the power battery heating device;

[0063] The power battery heating device is used for heating the power battery of the vehicle.

[0064] The power generated by the photovoltaic panel can be connected to the input end of the photovoltaic controller through a circuit. The output end of the photovoltaic controller can be connected to the load through a circuit, and the output voltage is used for supplying power to the load. The power battery heating device can be used as the load connected to the output end of the photovoltaic controller, so that the power generated by the photovoltaic panel can be used for heating the power battery heating device, thereby reducing the power consumption of the power battery for battery heating output, reducing the burden of the power battery, indirectly improving the cruising range of the vehicle, and achieving the purpose of increasing the range. The power battery of the vehicle is used for driving the vehicle to run. The parts of the load of the photovoltaic controller can use low voltage or high voltage, which is not limited in the embodiment.

[0065] The output end of the photovoltaic controller can also be connected to the battery in the vehicle through a line to charge the battery. The battery in the vehicle can be used to supply power to low-voltage electrical appliances in the vehicle. In the embodiment, the photovoltaic controller is connected to the battery, so that the electricity generated by the photovoltaic panel can be used to charge the battery, thereby reducing the amount of electricity output by the power battery to the low-voltage network of the vehicle, reducing the burden on the power battery, indirectly improving the cruising range of the vehicle, and achieving the purpose of increasing the range. In a feasible implementation manner, the output end of the photovoltaic controller can be connected to the battery, the battery is connected to the low-voltage electrical appliances, and the electricity output by the photovoltaic controller is used to charge the battery, and then the battery is used to supply power to the low-voltage electrical appliances. In a feasible implementation manner, the output end of the photovoltaic controller can be connected to the low-voltage network of the vehicle, and the electricity output can be used to charge the battery in the low-voltage network of the vehicle or directly supply power to the low-voltage electrical appliances in the low-voltage network of the vehicle.

[0066] The photovoltaic controller can also connect the photovoltaic power generation to the high-voltage network of the vehicle through a bidirectional DC converter to increase the voltage, so that it can be used to charge the power battery in the high-voltage network of the vehicle, so that the photovoltaic power generation can be fully utilized. In a specific implementation manner, the output end of the photovoltaic controller can be directly connected to the bidirectional DC converter through a line, or the output end of the photovoltaic controller can be connected to the battery through a line, and the battery is connected to the bidirectional DC converter. In a feasible implementation manner, the bidirectional DC converter can directly use the original bidirectional DC converter in the vehicle to achieve the purpose, that is, the bidirectional DC converter can also be used to step down the high-voltage power in the high-voltage network of the vehicle to charge the battery, supply power to the low-voltage electrical appliances, and supply power to the load of the photovoltaic controller. Thus, on the one hand, the implementation complexity of the photovoltaic power supply system of the vehicle is reduced, and on the other hand, the normal operation of the vehicle can also be ensured in the case that the photovoltaic power generation is low due to weather, night, etc.

[0067] There are many specific implementation manners of the power battery heating device, which are not limited in the embodiment.

[0068] In the embodiment, the proposed photovoltaic power supply system of the vehicle can be used to heat the power battery, charge the battery in the vehicle, and supply power to the high-voltage network of the vehicle, so that the photovoltaic power generation can be fully utilized, the utilization rate of the photovoltaic power generation is improved, and the amount of electricity output by the power battery to the low-voltage network or the battery heating is reduced, thereby reducing the burden on the power battery, indirectly improving the cruising range of the vehicle, and achieving the purpose of increasing the range.

[0069] Based on the first embodiment, a second embodiment of the photovoltaic power supply system of the vehicle is provided. In the second embodiment, the power battery heating device can include a heat preservation box with heating function and a temperature sensor group. The water outlet end of the heat preservation box is connected to the water inlet end of the power battery, and the water inlet end of the heat preservation box is connected to the water outlet end of the power battery. The temperature sensor group includes a first temperature sensor for detecting the water inlet temperature of the power battery, a second temperature sensor for detecting the water outlet temperature of the power battery, and a third temperature sensor for detecting the water outlet temperature of the heat preservation box.

[0070] The photovoltaic controller is configured to control the on-off of the heating function of the heat preservation box according to the temperature values measured by the temperature sensors in the temperature sensor group.

[0071] There are many ways to implement the heating function of the heat preservation box, which is not limited in the second embodiment. For example, the heating function of the heat preservation box can be implemented by PTC (Positive Temperature Coefficient). The heat preservation box can be located above the vehicle chassis, the cargo box or the power battery, and the location is not limited. The water outlet end of the heat preservation box is connected to the water inlet end of the power battery, and the water inlet end of the heat preservation box is connected to the water outlet end of the power battery, so as to form a loop. The warm water in the heat preservation box can heat the power battery through the loop. The heat preservation box can be filled with water or coolant, which can be set as needed in the specific implementation. The temperature values measured by the temperature sensor group can be provided to the photovoltaic controller, so as to meet the temperature control and temperature setting requirements. In the second embodiment, the control strategy of the photovoltaic controller for controlling the on-off of the heating function of the heat preservation box based on the measured temperature values is not limited, and can be set according to the requirements of the actual application scenario in the specific implementation.

[0072] In an implementation, each temperature sensor in the temperature sensor group can use the original temperature sensor in the power battery cooling system of the vehicle, so as to reduce the implementation complexity of the photovoltaic power supply system of the vehicle.

[0073] In an implementation, the power battery heating device can be connected to the original power battery cooling system of the vehicle, so as to make full use of the original structure of the vehicle and reduce the implementation complexity of integrating the photovoltaic power supply system into the original system of the vehicle. Specifically, the power battery heating device further includes a switching assembly. The heat preservation box is connected in parallel with a heat exchanger in the cooling loop of the power battery cooling system of the vehicle, and is used to replace the heat exchanger to form a heating loop. The switching assembly is used to control the connection of the cooling loop or the heating loop. The load further includes a battery loop water pump in the cooling loop.

[0074] The switching assembly can be implemented in many ways, which are not limited in the embodiment. For example, in one possible implementation, the switching assembly can be implemented by a three-way valve. The outlet of the power battery is connected to the inlet of the heat exchanger, the outlet of the heat exchanger is connected to the inlet of the battery circuit water pump, the outlet of the battery circuit water pump is connected to the inlet of the power battery, thus forming a cooling circuit. In addition to the cooling circuit, the power battery cooling system can also include other parts, which are not limited in the embodiment. For example, the power battery cooling system can also include an expansion water tank. The inlet of the expansion water tank is connected to the outlet of the power battery, and the outlet of the expansion water tank is connected to the inlet of the battery circuit water pump, so as to realize the functions of degassing and water replenishment.

[0075] In one possible implementation, as shown in Figure 1 , a new energy vehicle system diagram is given. Some new energy vehicles do not have a range extender, and some new energy vehicles have a range extender. The range extender can be a fuel cell, a range extender, or any form of range extender. The electrical energy generated by the range extender is connected to the high-voltage network, which can charge the power battery or directly drive the vehicle. The power of the power battery can be used to drive the vehicle, and the power of the power battery can also be supplied to the storage battery and the low-voltage electrical appliances of the vehicle through the voltage reduction function of the bidirectional DCDC (bidirectional direct current converter). The photovoltaic panel receives sunlight and converts solar energy into electrical energy. The photovoltaic power generation can heat the power battery through the photovoltaic controller, and can also supply power to the storage battery and the low-voltage electrical appliances of the vehicle. In addition, the photovoltaic power generation can also be connected to the high-voltage network of the vehicle through the voltage increasing function of the bidirectional DCDC.

[0076] In one possible implementation, as shown in Figure 2 , a physical connection structure diagram of a photovoltaic power supply system and a vehicle power system is given. The diagram is divided into two parts. The left part is connected by a water pipe (thick solid line in Figure 2 ), and the right part is connected by an electrical circuit (thick dashed line in Figure 2The power battery is connected with the high-voltage PDU (Power Distribution Unit, power distribution unit), the three-way valve, the temperature sensor group, the heat preservation box, the battery loop water pump, and the high-voltage PDU and the bidirectional DCDC through the circuit connection. The expansion water kettle is connected with the power battery to carry out degassing, and is connected with the upper three-way valve to supplement the water for the cooling loop. The first temperature sensor (T1) and the second temperature sensor (T2) are added to the inlet and outlet of the power battery, the second temperature sensor is connected with the heat exchanger, the heat exchanger is connected with the lower three-way valve, and the three-way valve is connected in series. The outlet of the lower three-way valve is connected with the battery loop water pump, and then the first temperature sensor is connected with the power battery. The a port of the three-way valve is connected with the heat preservation box, the third temperature sensor (T3) is arranged at the water outlet of the heat preservation box, the inlet of the heat preservation box is connected with the upper three-way valve, and the water outlet of the power battery is connected with the power battery. Different from the conventional power battery cooling water circuit, in the embodiment, the three-way valve and the upper three-way valve are connected in series in the water inlet of the power battery, a heating water circuit is connected in parallel on the water inlet of the power battery by controlling the opening and closing of the three-way valve. The heat preservation box integrates the water heating structure and the heat preservation structure, and the remote app control monitoring module can be integrated in the photovoltaic controller. The electricity generated by the right photovoltaic panel is connected with the photovoltaic controller through the circuit, the photovoltaic controller can output 24V low-voltage electricity for the vehicle, and the battery and the load are powered. The battery is connected with the bidirectional DCDC, the bidirectional DCDC is connected with the high-voltage PDU, and the high-voltage PDU is connected with the power battery.

[0077] In an implementation, as shown in FIG. 1, a communication signal diagram of a photovoltaic power supply system and a vehicle power system is given. The photovoltaic controller can be connected to the vehicle CAN (Controller Area Network, controller area network) to read the temperature values measured by the temperature sensor group, the power battery voltage, the battery voltage, the photovoltaic panel voltage and other data. Figure 3

[0078] Based on the photovoltaic power supply system of the vehicle in the first and / or second embodiments, a third embodiment of the control method of the present application is proposed. Referring to FIG. 1, Figure 4 Figure 4 is a flowchart of the third embodiment of the control method of the present application. It should be noted that although the logical order is shown in the flowchart, in some cases, the steps shown or described can be performed in an order different from that shown here. In this embodiment, the control method can be applied to the photovoltaic controller in the photovoltaic power supply system of the vehicle. In this embodiment, the control method comprises:

[0079] Step S10, the load connected to the photovoltaic controller is powered by photovoltaic power generation of the photovoltaic panel.

[0080] ​​In the embodiment, to further fully utilize the power generation of the photovoltaic panel and improve the utilization rate of photovoltaic power generation, a control strategy of photovoltaic power supply is provided, which can not only achieve the purpose of gradually and completely utilizing the photovoltaic power generation, but also heat the power battery and shorten the time of heating the power battery to the optimal temperature, thereby improving the starting performance of the vehicle.

[0081] The photovoltaic power generation of the photovoltaic panel is connected to the photovoltaic controller. In the case that the photovoltaic controller is connected to the load, the photovoltaic controller first supplies power to the load connected to the photovoltaic controller through photovoltaic power generation, for example, supplies power to the power battery heating device, so that in the case that the power battery needs to be heated, the power battery can be heated through photovoltaic power generation, the power battery reduces the output of the low-voltage network of the vehicle, reduces the burden of the power battery, indirectly improves the cruising range of the vehicle, and plays the role of increasing the range.

[0082] It should be noted that the load connected to the photovoltaic controller refers to the load connected to the output end of the photovoltaic controller through a line and in an open state. The on-off of each load can be controlled by the photovoltaic controller, and in the embodiment, the specific control strategy is not limited and can be pre-set as needed.

[0083] In step S20, in the case that the power generation of the photovoltaic panel is greater than the load power connected to the photovoltaic controller and the storage battery meets the preset charging condition, the load connected to the photovoltaic controller is supplied with power through photovoltaic power generation, and the storage battery of the vehicle is charged through photovoltaic power generation.

[0084] The photovoltaic controller can obtain the power generation of the photovoltaic panel and the load power connected to the photovoltaic controller, and compare the two. If the power generation is greater than the load power, it means that there is still surplus after the photovoltaic power generation supplies power to the load connected to the photovoltaic controller. To fully utilize the power generation of the photovoltaic panel, in this case, if it is detected that the storage battery meets the preset charging condition, the load connected to the photovoltaic controller can be supplied with power through photovoltaic power generation, and the storage battery of the vehicle can be charged through photovoltaic power generation.

[0085] The preset charging condition can be pre-set as needed, which is not limited in the embodiment. For example, in an available implementation, the preset charging condition can be that the voltage of the storage battery is less than a certain voltage.

[0086] In step S30, in the case that the power generation of the photovoltaic panel is greater than the load power connected to the photovoltaic controller and the storage battery does not meet the preset charging condition, the load connected to the photovoltaic controller is supplied with power through photovoltaic power generation, and the photovoltaic power generation is connected to the high-voltage network of the vehicle through the bidirectional DC converter.

[0087] If the generated power is greater than the load power, but the battery does not meet the preset charging condition, to avoid waste of the excess generated power, the photovoltaic power generation can be used to supply power to the load connected to the photovoltaic controller, and the photovoltaic power generation is connected to the high-voltage network of the vehicle through the bidirectional DC / DC converter for voltage boosting, so that the generated power of the photovoltaic panel is fully utilized, and the utilization rate of the photovoltaic power generation is improved.

[0088] The control strategy for the photovoltaic power generation system proposed in the embodiment can realize the step-by-step utilization of the photovoltaic generated power. Firstly, the generated power is used to heat the power battery, to ensure the vehicle function and reduce the heating power output from the power battery, and the energy loss of the power battery in the voltage conversion process is saved. Secondly, the remaining generated power of the photovoltaic panel is used to charge the battery, which can be used for the low-voltage electrical devices of the vehicle, to reduce the power input from the power battery to the low-voltage system through voltage reduction, and the energy loss of the power battery in the voltage conversion process is saved. Finally, the remaining generated power of the photovoltaic panel is used to charge the power battery through the voltage boosting function of the bidirectional DC / DC converter. The generated power of the photovoltaic panel is fully utilized, the utilization rate of the photovoltaic power generation is improved, the recovery period of the vehicle due to the increase of the cost of the related parts such as the photovoltaic panel is shortened, the user can obtain the benefits as soon as possible, and the vehicle cost is reduced.

[0089] In an implementable embodiment, the control method further comprises:

[0090] Step S40, in the case that the vehicle is in a non-running state, after receiving the power battery preheating instruction, the power battery heating device is controlled to heat the power battery.

[0091] In the case that the vehicle is in a non-running state, there is often a demand for preheating the power battery, in which case the photovoltaic controller can control the power battery heating device to heat the power battery after receiving the power battery preheating instruction. The power battery preheating instruction can be sent remotely by the user or set by the user according to habits, which is not limited herein.

[0092] In an implementable embodiment, the step of controlling the power battery heating device to heat the power battery in step S40 comprises:

[0093] Step S401, the switching component is controlled to be connected to the heating circuit.

[0094] Step S402, if the temperature value measured by the second temperature sensor is greater than or equal to the first preset threshold value, the battery circuit water pump in the cooling circuit is controlled to be turned off.

[0095] Step S403, if the temperature value measured by the second temperature sensor is less than the first preset threshold value, the battery circuit water pump is controlled to be started.

[0096] After receiving the power battery preheating instruction when the vehicle is in the non-running state, the photovoltaic controller can control the switching assembly to turn on the heating loop and monitor the temperature value measured by the second temperature sensor. If the temperature value measured by the second temperature sensor is greater than or equal to the first preset threshold value, it indicates that the temperature of the power battery is high, and heating is not needed to continue. At this time, the battery loop water pump can be controlled to be turned off. The first preset threshold value can be pre-set as needed and is not limited in the embodiment, for example, it can be set to 20℃. If the temperature value measured by the second temperature sensor is less than the first preset threshold value, it indicates that the temperature of the power battery is low, and heating is needed. At this time, the battery loop water pump can be controlled to be started to drive the warm water in the heat preservation box to the power battery water circuit to heat the power battery.

[0097] The control method further includes:

[0098] Step S50, when the vehicle is in the running state, the switching assembly is controlled to be connected to the cooling loop.

[0099] When the vehicle is in the running state, the photovoltaic controller can control the switching assembly to be connected to the cooling loop, so that the control strategy of cooling the power battery is executed through the original power battery cooling system of the vehicle.

[0100] In an available embodiment, after receiving the battery preheating instruction, the power battery heating device can be controlled to heat the power battery according to the flow as shown in Figure 5 If the photovoltaic controller receives the power battery preheating instruction, the photovoltaic controller drives the three-way valve and the battery loop water pump to operate, the three-way valve closes the c-b loop and opens the a-b loop, and the battery loop water pump drives the coolant to heat the warm water in the heat preservation box to the power battery, so as to increase the water temperature of the power battery loop and shorten the heating time of the power battery. Until the temperature value of the second temperature sensor is greater than or equal to 20℃ (which can be calibrated according to actual conditions), the driving of the three-way valve and the battery loop water pump is stopped.

[0101] In an available embodiment, the control method further includes:

[0102] Step S60, monitoring the temperature data measured by the temperature sensor in the temperature sensor group, and controlling the opening and closing of the heat preservation box heating function according to the temperature data, so as to control the water temperature of the heat preservation box in a set range.

[0103] The photovoltaic controller can monitor the temperature data measured by one or more temperature sensors in the temperature sensor group, and then control the opening and closing of the incubator heating function according to the temperature data. The control strategy for controlling the opening and closing of the incubator in this embodiment is not limited, and can be set as needed in advance, as long as the water temperature of the incubator can be controlled within a certain range, so that the water in the incubator can be heated for a long time when the power battery needs to be heated, that is, the efficiency of preheating the power battery can be improved. For example, in a possible implementation, the temperature value measured by the third temperature sensor can be monitored. If the temperature value measured by the third temperature sensor is greater than a certain threshold, the incubator heating function is controlled to be closed. If it is less than or equal to the threshold, the incubator heating function is controlled to be turned on, so that the water temperature of the incubator is always maintained within a certain temperature range.

[0104] In a possible implementation, the step S60 comprises:

[0105] Step S601, when the vehicle is in an unrunning state, monitoring the temperature values measured by the first temperature sensor, the second temperature sensor and the third temperature sensor respectively.

[0106] In this embodiment, a control strategy of a photovoltaic controller for an incubator heating function when a vehicle is in an unrunning state is proposed. The photovoltaic controller can monitor the temperature values measured by the first temperature sensor, the second temperature sensor and the third temperature sensor respectively. Hereinafter, the temperature value measured by the first temperature sensor is referred to as the first temperature value, the temperature value measured by the second temperature sensor is referred to as the second temperature value, and the temperature value measured by the third temperature sensor is referred to as the third temperature value for distinction.

[0107] Step S602, if the first temperature value measured by the first temperature sensor is less than a second preset threshold and the third temperature value measured by the third temperature sensor is less than a third preset threshold, the heating function of the incubator is controlled to be turned on.

[0108] The photovoltaic controller compares the first temperature value with the second preset threshold, and compares the third temperature value with the third preset threshold. The second preset threshold and the third preset threshold can be set as needed. The second preset threshold can be set to be less than the third preset threshold, for example, the second preset threshold is set to 20℃, and the third preset threshold can be set to 30℃. If the first temperature value is less than the second preset threshold and the third temperature value is less than the third preset threshold, it indicates that the water temperature in the incubator is low, and the temperature of the power battery is also low. In this case, the heating function of the incubator can be turned on, so that when there is a preheating demand for the power battery, the power battery can be heated in time by the warm water in the incubator.

[0109] Step S603, if the first temperature value is greater than or equal to the second preset threshold value, or the third temperature value is greater than or equal to the third preset threshold value, it is judged whether the second temperature value measured by the second temperature sensor is greater than or equal to the second preset threshold value.

[0110] If the first temperature value is greater than or equal to the second preset threshold value, it indicates that the temperature of the water outlet end of the power battery has not reached the degree that needs to be heated; if the third temperature value is greater than or equal to the third preset threshold value, it indicates that the water temperature in the incubator is high enough to heat the power battery, and there is no need to continue heating and waste power; in either of the two cases, it can be further judged whether the second temperature value is greater than or equal to the second preset threshold value.

[0111] Step S604, if the second temperature value is greater than or equal to the second preset threshold value, the heating function of the incubator is controlled to be turned off.

[0112] If the second temperature value is greater than or equal to the second preset threshold value, it indicates that the temperature of the water outlet end of the power battery has not reached the degree that needs to be heated; in this case, the photovoltaic controller can control the heating function of the incubator to be turned off, so as to avoid wasting photovoltaic power generation due to continuous heating of the incubator, and also avoid over-heating of the power battery due to continuous temperature rise of the incubator, which may cause damage to the power battery.

[0113] Step S605, if the second temperature value is less than the second preset threshold value, the heating function of the incubator is controlled to be turned on.

[0114] If the second temperature value is less than the second preset threshold value, it indicates that the temperature of the water outlet end of the power battery is low; in this case, the photovoltaic controller can control the heating function of the incubator to be turned on, so as to heat the power battery through the heating circuit.

[0115] In a feasible implementation, when the vehicle is in a non-running state, the incubator can be controlled according to the flow as shown in Figure 6 The temperature signals of the temperature sensor group are transmitted to the photovoltaic controller. When the photovoltaic controller reads the temperature value of the first temperature sensor < 20℃ (which can be calibrated according to actual conditions) and the temperature value of the third temperature sensor < 30℃ (which can be calibrated according to actual conditions), the switch of the incubator is turned on to heat the coolant in the incubator.

[0116] In a feasible implementation, when the vehicle is in a running state, the photovoltaic controller can monitor the temperature value of the third temperature sensor of the vehicle, and in the case that the temperature value of the third temperature sensor is less than the third preset threshold value, the heating function of the incubator is controlled to be turned on, otherwise, the control function of the incubator is controlled to be turned off.

[0117] In a feasible implementation, the control method further comprises:

[0118] Step S70, in the case that the vehicle is in the non-running state, the first temperature sensor, the second temperature sensor, the third temperature sensor, the switching assembly, the battery loop water pump and the heat preservation box are connected to the photovoltaic controller to be powered by the photovoltaic power generation.

[0119] Step S80, in the case that the vehicle is in the running state, the first temperature sensor, the second temperature sensor, the switching assembly and the battery loop water pump are switched to be powered and controlled by the vehicle low-voltage network.

[0120] In the case that the vehicle is in the non-running state, the temperature sensor group, the switching assembly, the battery loop water pump and the heat preservation box can all be connected to the photovoltaic controller to be powered and controlled by the photovoltaic controller, so as to ensure that the power battery can be heated by the photovoltaic power generation when the vehicle is not running. In the case that the vehicle is in the running state, the first temperature sensor, the second temperature sensor, the switching assembly and the battery loop water pump can be switched to be powered and controlled by the vehicle low-voltage network. Since the first temperature sensor, the second temperature sensor and the battery loop water pump are originally powered and controlled by the vehicle low-voltage network, in order to realize heating of the power battery by the photovoltaic power generation when the vehicle is in the non-running state, the temperature sensor group, the switching assembly, the battery loop water pump and the heat preservation box are powered and controlled by the photovoltaic controller; and after the vehicle is started, the first temperature sensor, the second temperature sensor and the battery loop water pump are switched back to be powered and controlled by the vehicle low-voltage network, and the control logic can adopt the control logic in the original system of the vehicle, so as to ensure normal operation of the original functions of the vehicle.

[0121] In an implementable embodiment, in the case that the vehicle is in the running state, the opening and closing of the heat preservation box can be controlled according to the flowchart as shown in FIG. 6. Figure 7 The photovoltaic controller closes the three-way valve, the battery loop water pump, the switch of the first temperature sensor and the second temperature sensor according to the vehicle running signal, and is powered and controlled by the vehicle low-voltage network; the three-way valve closes the a-b loop and opens the c-b loop. The photovoltaic controller drives the third temperature sensor and the heat preservation box, and the temperature signal of the third temperature sensor is transmitted to the photovoltaic controller. When the photovoltaic controller reads the temperature value of the third temperature sensor < 30℃ (which can be calibrated according to the actual situation), the switch of the load heat preservation box is opened to heat the cooling liquid in the heat preservation box.

[0122] Based on the third embodiment, the fourth embodiment of the control method of the present application is proposed. In this embodiment, the control method further comprises:

[0123] Step A10, if the photovoltaic power generation is not boosted by the bidirectional DC converter and connected to the vehicle high-voltage network, and the voltage of the battery is greater than or equal to the first preset voltage, it is determined that the battery does not meet the preset charging condition.

[0124] In this embodiment, a feasible implementation of determining whether the battery meets the preset charging condition is provided.

[0125] It should be noted that in the two cases of connecting the photovoltaic power generation to the vehicle high-voltage network through the bidirectional DC converter and connecting the photovoltaic power generation to the vehicle high-voltage network without the bidirectional DC converter, different judgment conditions can be set for the battery. In the case of connecting the photovoltaic power generation to the vehicle high-voltage network through the bidirectional DC converter, the photovoltaic controller can determine whether the voltage of the battery is greater than or equal to the first preset voltage. The first preset voltage can be set in advance according to the needs, which is not limited in this embodiment, for example, it can be set to 25V. If the voltage of the battery is greater than or equal to the first preset voltage, it means that the battery has sufficient power and does not need to be charged, that is, it can be determined that the battery does not meet the preset charging condition, so that the remaining power after supplying power to the load can be boosted and connected to the vehicle high-voltage network, and the photovoltaic power generation is fully utilized.

[0126] Step A20, if the photovoltaic power generation is not boosted by the bidirectional DC converter and connected to the vehicle high-voltage network, and the voltage of the battery is less than the first preset voltage, it is determined that the battery meets the preset charging condition.

[0127] If the voltage of the battery is less than the first preset voltage, it means that the battery does not have enough power, at this time, it can be determined that the battery meets the preset charging condition, so that the battery is charged by the photovoltaic power generation, and the photovoltaic power generation is fully utilized.

[0128] Step A30, if the photovoltaic power generation is boosted by the bidirectional DC converter and connected to the vehicle high-voltage network, and the voltage of the battery is less than the second preset voltage, it is determined that the battery meets the preset charging condition, wherein the second preset voltage is less than the first preset voltage.

[0129] In the case that the photovoltaic power generation is connected to the high-voltage network of the vehicle after being boosted by the bidirectional DC converter, the photovoltaic controller can determine whether the voltage of the storage battery is less than a second preset voltage. The second preset voltage can be set in advance according to requirements, and the second preset voltage is set to be less than the first preset voltage, for example, can be set to 23V. If the voltage of the storage battery is less than the second preset voltage, it indicates that the low-voltage electrical appliances in the vehicle consume the power in the storage battery in the process of being connected to the high-voltage network of the vehicle after being boosted by the photovoltaic power generation, so that the power in the storage battery is reduced to a level that needs to be charged. At this time, it can be determined that the storage battery meets the preset charging condition, so that the photovoltaic power generation is switched to preferentially supply power to the storage battery. Since there is a loss in the process of boosting the photovoltaic power generation, by preferentially charging the storage battery when the storage battery meets the charging condition, the photovoltaic power generation can be fully utilized, and the storage battery is also prevented from being depleted, thereby prolonging the service life of the storage battery.

[0130] In step A40, if the photovoltaic power generation is connected to the high-voltage network of the vehicle after being boosted by the bidirectional DC converter, and the voltage of the storage battery is greater than or equal to the second preset voltage, it is determined that the storage battery does not meet the preset charging condition.

[0131] If the voltage of the storage battery is greater than or equal to the second preset voltage, it indicates that the power in the storage battery has not been reduced to a level that needs to be charged. At this time, it can be determined that the storage battery does not meet the preset charging condition, so as to continue to be connected to the high-voltage network of the vehicle after being boosted. The second preset voltage is less than the first preset voltage, which can avoid frequent switching between the two output paths of supplying power to the storage battery and being connected to the high-voltage network of the vehicle after being boosted, thereby ensuring the stability of the system.

[0132] In an embodiment, the control method further comprises:

[0133] In step A50, if the photovoltaic power generation is not connected to the high-voltage network of the vehicle after being boosted by the bidirectional DC converter, and the voltage of the storage battery is less than a third preset voltage, the bidirectional DC converter is controlled to step down the high-voltage power in the high-voltage network of the vehicle to charge the storage battery, and the third preset voltage is less than the second preset voltage.

[0134] In the case that the vehicle is in the running state, if the photovoltaic power generation is not connected to the high-voltage network of the vehicle through the bidirectional DC converter, it can be determined whether the voltage of the storage battery is less than a third preset voltage. The third preset voltage can be set according to the needs, and the third preset voltage is less than the second preset voltage, for example, it can be set to 21V. When the voltage of the storage battery is less than the third preset voltage, it indicates that the power generation of the photovoltaic panel is low, which is insufficient to charge the storage battery. At this time, the photovoltaic controller can control the bidirectional DC converter to step down the high-voltage power of the high-voltage network of the vehicle to charge the storage battery, thereby avoiding the low power of the storage battery. It can be understood that if the voltage of the storage battery is greater than or equal to the third preset voltage, it is determined whether the voltage of the storage battery is greater than or equal to the first preset voltage.

[0135] In an implementable embodiment, the step S30 comprises:

[0136] Step S30, in the case that the power generation of the photovoltaic panel is greater than the load power connected to the photovoltaic controller and the storage battery does not meet the preset charging condition, the allowable charging power of the power battery is obtained.

[0137] In the embodiment, to avoid overcharging the power battery, the photovoltaic controller can obtain the allowable charging power of the power battery in the case that the power generation of the photovoltaic panel is greater than the load power connected to the photovoltaic controller and the storage battery does not meet the preset charging condition. The allowable charging power can be obtained from the power battery.

[0138] Step S40, if the allowable charging power of the power battery is greater than a preset power, the load connected to the photovoltaic controller is powered by photovoltaic power generation, and the photovoltaic power generation is connected to the high-voltage network of the vehicle through the bidirectional DC converter to power the power battery.

[0139] The preset power can be set according to the needs, which is not limited in the embodiment, for example, it can be set to 8KW.

[0140] In an implementable embodiment, in the case that the allowable charging power of the power battery is less than or equal to the preset power, the photovoltaic controller no longer powers the power battery through the bidirectional DC converter to avoid overcharging the power battery and causing damage to the battery.

[0141] In a feasible implementation, in the case that the power generated by the photovoltaic panel is greater than the load power connected to the photovoltaic controller, and the battery does not meet the preset charging condition, if the photovoltaic controller connects the photovoltaic power generation to the high-voltage network of the whole vehicle without boosting, it is determined whether the allowable charging power of the power battery is greater than a first preset power; if yes, the photovoltaic power generation is connected to the high-voltage network of the whole vehicle after boosting, otherwise, the photovoltaic power generation is connected to the high-voltage network of the whole vehicle without boosting; in the case that the power generated by the photovoltaic panel is greater than the load power connected to the photovoltaic controller, and the battery does not meet the preset charging condition, if the photovoltaic controller has connected the photovoltaic power generation to the high-voltage network of the whole vehicle after boosting, it is determined whether the allowable charging power of the power battery is less than a second preset power; if yes, the photovoltaic power generation is no longer connected to the high-voltage network of the whole vehicle after boosting, if no, the photovoltaic power generation is connected to the high-voltage network of the whole vehicle after boosting. The first preset power and the second preset power can be set as needed, and the second preset power can be set to be less than the first preset power, for example, the first preset power is set to 8KW, and the second preset power is set to 6KW.

[0142] In a feasible implementation, the photovoltaic power generation can be connected to the high-voltage network of the whole vehicle after boosting according to the following conditions: Figure 8The photovoltaic power supply control logic shown controls. In the state that the vehicle is not running, when the power generated by the photovoltaic is greater than the power of the temperature sensor group, the heat preservation box, the battery loop water pump, the three-way valve and other loads, the excess power is stored through the energy storage circuit. When the battery voltage is less than 25V (which can be calibrated according to the actual situation), the photovoltaic charges the battery. When the battery voltage is greater than or equal to 25V (which can be calibrated according to the actual situation) and the power that the power battery can allow to charge is greater than or equal to 8kW (which can be calibrated according to the actual situation), it is considered that the power of the photovoltaic is sufficient and the power battery allows to charge, the bidirectional DCDC works in the low-to-high voltage mode to charge the power battery, until the power that the power battery can allow to charge is less than 6kW (which can be calibrated according to the actual situation) or the battery voltage is less than 23V (which can be calibrated according to the actual situation), the bidirectional DCDC stops working, and the photovoltaic system charges the battery. In the case that the vehicle is running, when the power generated by the photovoltaic is greater than the power of the third temperature sensor and the heat preservation box, the excess power is stored through the energy storage circuit. When the battery voltage is less than 21V (which can be calibrated according to the actual situation), the power of the photovoltaic system is insufficient, the bidirectional DCDC starts to work in the high-to-low voltage mode to supply power to the whole vehicle low-voltage network together with the excess power of the photovoltaic system and charge the battery, until the battery voltage is greater than or equal to 25V (which can be calibrated according to the actual situation), the bidirectional DCDC stops the high-to-low voltage working mode. When the battery voltage is greater than or equal to 25V (which can be calibrated according to the actual situation) and the power that the power battery can allow to charge is greater than or equal to 8kW (which can be calibrated according to the actual situation), it is considered that the power of the photovoltaic system is sufficient and the power battery allows to charge, the bidirectional DCDC works in the low-to-high voltage mode to charge the power battery, until the power that the power battery can allow to charge is less than 6kW (which can be calibrated according to the actual situation) or the battery voltage is less than 23V (which can be calibrated according to the actual situation), the bidirectional DCDC stops working, and the photovoltaic system charges the battery.

[0143] In addition, the embodiment of the present application also provides a control device, such as Figure 9 as shown, Figure 9 is a device structure schematic diagram of a hardware running environment related to the embodiment scheme of the present application. It should be noted that the control device of the embodiment of the present application can be the photovoltaic controller of the photovoltaic power supply system of the vehicle in the above embodiment.

[0144] as Figure 9As shown, the control device can include a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, and a communication bus 1002. The communication bus 1002 is used to realize the connection communication between the components. The user interface 1003 can include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 can also include a standard wired interface, a wireless interface. The network interface 1004 can optionally include a standard wired interface, a wireless interface (such as a WI-FI interface). The memory 1005 can be a high-speed RAM memory, or a stable memory (non-volatile memory) such as a disk memory. The memory 1005 can also be an independent storage device from the aforementioned processor 1001.

[0145] Those skilled in the art can understand that Figure 9 The device structure shown in the foregoing embodiments does not constitute a limitation on the control device, and can include more or fewer components than shown, or combine certain components, or different component arrangements.

[0146] As Figure 9 As shown, the memory 1005 as a computer storage medium can include an operating system, a network communication module, a user interface module, and a control program. The operating system is a program that manages and controls the hardware and software resources of the device, supports the running of the control program and other software or programs. In the Figure 9 In the device shown, the user interface 1003 is mainly used for data communication with the client; the network interface 1004 is mainly used for establishing a communication connection with the server; and the processor 1001 can be used to call the control program stored in the memory 1005 and perform the following operations:

[0147] Power the load connected to the photovoltaic controller through photovoltaic power generation of the photovoltaic panel;

[0148] In the case that the power generation power of the photovoltaic panel is greater than the load power connected to the photovoltaic controller and the battery meets the preset charging condition, power the load connected to the photovoltaic controller through photovoltaic power generation and charge the battery of the vehicle through photovoltaic power generation;

[0149] In the case that the power generation power of the photovoltaic panel is greater than the load power connected to the photovoltaic controller and the battery does not meet the preset charging condition, power the load connected to the photovoltaic controller through photovoltaic power generation and connect the photovoltaic power generation to the high-voltage network of the vehicle through the bidirectional DC converter.

[0150] In an implementation, the processor 1001 can further be configured to invoke a control program stored in the memory 1005 to perform the following operations:

[0151] In the case that the vehicle is in the running state, the switching assembly is controlled to connect the cooling circuit.

[0152] In an implementation, the power battery heating device further comprises a heat preservation box with a heating function, a temperature sensor group, and a switching assembly, the temperature sensor group comprises a second temperature sensor, the heat preservation box is connected in parallel with a heat exchanger on a cooling loop in a power battery cooling system of the vehicle, and is used to replace the heat exchanger to form a heating loop.

[0153] The operation of controlling the power battery heating device to heat the power battery comprises:

[0154] The switching assembly is controlled to connect the heating loop.

[0155] If the temperature value measured by the second temperature sensor is greater than or equal to a first preset threshold, the battery loop water pump in the cooling loop is controlled to be turned off.

[0156] If the temperature value measured by the second temperature sensor is less than the first preset threshold, the battery loop water pump is controlled to be started.

[0157] The processor 1001 can further be configured to invoke a control program stored in the memory 1005 to perform the following operations:

[0158] In the case that the vehicle is in the running state, the switching assembly is controlled to connect the cooling circuit.

[0159] In an implementation, the processor 1001 can further be configured to invoke a control program stored in the memory 1005 to perform the following operations:

[0160] The temperature data measured by the temperature sensors in the temperature sensor group is monitored, and the heating function of the heat preservation box is controlled to be turned on or off according to the temperature data, so as to control the water temperature of the heat preservation box to be in a set range.

[0161] In an implementation, the temperature sensor group further comprises a first temperature sensor and a third temperature sensor, and the operation of monitoring the temperature data measured by the temperature sensors in the temperature sensor group and controlling the heating function of the heat preservation box to be turned on or off according to the temperature data comprises:

[0162] In the case that the vehicle is in the running state, the temperature values measured by the first temperature sensor, the second temperature sensor, and the third temperature sensor are monitored.

[0163] if the first temperature value measured by the first temperature sensor is less than a second preset threshold value and the third temperature value measured by the third temperature sensor is less than a third preset threshold value, then the heating function of the incubator is controlled to be turned on;

[0164] if the first temperature value is greater than or equal to the second preset threshold value or the third temperature value is greater than or equal to the third preset threshold value, then it is determined whether the second temperature value measured by the second temperature sensor is greater than or equal to the second preset threshold value;

[0165] if the second temperature value is greater than or equal to the second preset threshold value, then the heating function of the incubator is controlled to be turned off;

[0166] if the second temperature value is less than the second preset threshold value, then the heating function of the incubator is controlled to be turned on.

[0167] In an implementable embodiment, the processor 1001 can also be configured to invoke a control program stored in the memory 1005 to perform the following operations:

[0168] when the vehicle is in an unrunning state, the first temperature sensor, the second temperature sensor, the third temperature sensor, the switching assembly, the battery loop water pump and the incubator are connected to the photovoltaic controller to be powered by the photovoltaic power generation;

[0169] when the vehicle is in a running state, the first temperature sensor, the second temperature sensor, the switching assembly and the battery loop water pump are switched to be powered and controlled by the vehicle's low-voltage network.

[0170] In an implementable embodiment, the processor 1001 can also be configured to invoke a control program stored in the memory 1005 to perform the following operations:

[0171] if the photovoltaic power generation is not connected to the vehicle's high-voltage network after being boosted by the bidirectional DC converter, and the voltage of the battery is greater than or equal to a first preset voltage, then it is determined that the battery does not meet the preset charging condition;

[0172] if the photovoltaic power generation is not connected to the vehicle's high-voltage network after being boosted by the bidirectional DC converter, and the voltage of the battery is less than the first preset voltage, then it is determined that the battery meets the preset charging condition;

[0173] if the photovoltaic power generation is connected to the vehicle's high-voltage network after being boosted by the bidirectional DC converter, and the voltage of the battery is less than a second preset voltage, then it is determined that the battery meets the preset charging condition, wherein the second preset voltage is less than the first preset voltage;

[0174] If the photovoltaic power generation is connected to the vehicle high-voltage network through the bidirectional DC converter after being boosted, and the voltage of the battery is greater than or equal to the second preset voltage, it is determined that the battery does not satisfy the preset charging condition.

[0175] In an implementation, the processor 1001 can further be configured to invoke a control program stored in the memory 1005 to perform the following operations:

[0176] If the photovoltaic power generation is not connected to the vehicle high-voltage network through the bidirectional DC converter after being boosted, and the voltage of the battery is less than a third preset voltage, the bidirectional DC converter is controlled to step down the high-voltage power of the vehicle high-voltage network to charge the battery, when the vehicle is in a running state, the third preset voltage is less than the second preset voltage.

[0177] In an implementation, when the power generation of the photovoltaic panel is greater than the power of the load connected to the photovoltaic controller, and the battery does not satisfy the preset charging condition, the operations of supplying power to the load connected to the photovoltaic controller by photovoltaic power generation, and connecting the photovoltaic power generation to the vehicle high-voltage network through the bidirectional DC converter after being boosted include:

[0178] When the power generation of the photovoltaic panel is greater than the power of the load connected to the photovoltaic controller, and the battery does not satisfy the preset charging condition, the allowable charging power of the power battery is obtained.

[0179] If the allowable charging power of the power battery is greater than a preset power, the photovoltaic power generation is used to supply power to the load connected to the photovoltaic controller, and the photovoltaic power generation is connected to the vehicle high-voltage network through the bidirectional DC converter after being boosted to charge the power battery.

[0180] In addition, an embodiment of the present application further provides a computer readable storage medium, and the storage medium stores a control program. When the control program is executed by a processor, the steps of the control method described above are implemented.

[0181] Embodiments of the control device and the computer readable storage medium of the present application can refer to embodiments of the control method of the present application, and will not be described herein.

[0182] It should be noted that, in this document, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0183] The above-mentioned embodiment numbers of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0184] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be realized by means of software and the necessary general hardware platform, of course, they can also be realized by hardware, but in many cases the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as a ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for making a terminal device (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present application.

[0185] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is made by using the content of the specification and drawings of the present application, is also included in the patent protection scope of the present application.

Claims

1. A photovoltaic power supply system for a vehicle, characterized by, The photovoltaic power supply system of the vehicle comprises: a photovoltaic panel, a photovoltaic controller, a bidirectional DC converter and a power battery heating device; the photovoltaic power generation of the photovoltaic panel is connected to the photovoltaic controller, the photovoltaic controller is configured to supply power to a load by photovoltaic power generation, charge a battery of the vehicle and connect the photovoltaic power generation to a high-voltage network of the vehicle through the bidirectional DC converter, the load comprises the power battery heating device; the power battery heating device is configured to heat the power battery of the vehicle; the power battery heating device further comprises a heat preservation box with a heating function, a temperature sensor group and a switching assembly, the temperature sensor group comprises a second temperature sensor, the heat preservation box is connected in parallel with a heat exchanger on a cooling loop of a power battery cooling system of the vehicle, is configured to replace the heat exchanger to form a heating loop, and the switching assembly is configured to control connection of the cooling loop or the heating loop; the load further comprises a battery loop water pump in the cooling loop; the photovoltaic controller is configured to, when the vehicle is in a non-running state, control the switching assembly to connect the heating loop after receiving a power battery preheating instruction; if a temperature value measured by the second temperature sensor is greater than or equal to a first preset threshold, control the battery loop water pump in the cooling loop to be turned off; and if the temperature value measured by the second temperature sensor is less than the first preset threshold, control the battery loop water pump to be started; the photovoltaic controller is further configured to, when the vehicle is in a running state, control the switching assembly to connect the cooling loop.

2. The photovoltaic power supply system for a vehicle according to claim 1, wherein an outlet of the heat preservation box is connected to an inlet of the power battery, an inlet of the heat preservation box is connected to an outlet of the power battery, and the temperature sensor group comprises a first temperature sensor configured to detect an inlet water temperature of the power battery, a second temperature sensor configured to detect an outlet water temperature of the power battery and a third temperature sensor configured to detect an outlet water temperature of the heat preservation box; the photovoltaic controller is configured to control the heating function of the heat preservation box according to temperature values measured by the temperature sensors in the temperature sensor group.

3. A control method characterized by, The photovoltaic power supply system applied to a vehicle comprises a photovoltaic panel, a photovoltaic controller, a bidirectional DC converter and a power battery heating device, the photovoltaic power generation of the photovoltaic panel is connected to the photovoltaic controller, the photovoltaic controller is configured to supply power to a load by photovoltaic power generation, charge a battery of the vehicle and connect the photovoltaic power generation to a high-voltage network of the vehicle through the bidirectional DC converter, the load comprises the power battery heating device, the power battery heating device is configured to heat the power battery of the vehicle, and the control method comprises: supplying power to the load connected to the photovoltaic controller by photovoltaic power generation of the photovoltaic panel; in a case where the power generation power of the photovoltaic panel is greater than the load power connected to the photovoltaic controller and the battery meets a preset charging condition, supplying power to the load connected to the photovoltaic controller by photovoltaic power generation and charging the battery of the vehicle by photovoltaic power generation; In a case that the power generation of the photovoltaic panel is greater than the load power connected to the photovoltaic controller and the preset charging condition of the storage battery is not met, the load connected to the photovoltaic controller is powered by photovoltaic power generation, and the photovoltaic power generation is connected to the high-voltage network of the vehicle after being boosted by the bidirectional DC converter; The power battery heating device further comprises a heat preservation box with a heating function, a temperature sensor group, and a switching assembly, the temperature sensor group comprises a second temperature sensor, the heat preservation box is connected in parallel with a heat exchanger on a cooling loop in a power battery cooling system of the vehicle, and is used for replacing the heat exchanger to form a heating loop; In a case that the vehicle is in a non-running state, after receiving a power battery preheating instruction, the switching assembly is controlled to be connected to the heating loop; If the temperature value measured by the second temperature sensor is greater than or equal to a first preset threshold value, the battery loop water pump in the cooling loop is controlled to be turned off; If the temperature value measured by the second temperature sensor is less than the first preset threshold value, the battery loop water pump is controlled to be started; In a case that the vehicle is in a running state, the switching assembly is controlled to be connected to the cooling loop.

4. The control method according to claim 3, characterized by, The control method further comprises: Monitoring temperature data measured by the temperature sensors in the temperature sensor group, and controlling the opening and closing of the heating function of the heat preservation box according to the temperature data, so as to control the water temperature of the heat preservation box in a set range.

5. The control method according to claim 4, characterized by, The temperature sensor group further comprises a first temperature sensor and a third temperature sensor, and the step of monitoring temperature data measured by the temperature sensors in the temperature sensor group and controlling the opening and closing of the heating function of the heat preservation box according to the temperature data comprises: In a case that the vehicle is in a non-running state, monitoring temperature values respectively measured by the first temperature sensor, the second temperature sensor, and the third temperature sensor; If a first temperature value measured by the first temperature sensor is less than a second preset threshold value and a third temperature value measured by the third temperature sensor is less than a third preset threshold value, the heating function of the heat preservation box is controlled to be turned on; If the first temperature value is greater than or equal to the second preset threshold value or the third temperature value is greater than or equal to the third preset threshold value, it is determined whether a second temperature value measured by the second temperature sensor is greater than or equal to the second preset threshold value; If the second temperature value is greater than or equal to the second preset threshold value, the heating function of the heat preservation box is controlled to be turned off; If the second temperature value is less than the second preset threshold value, the heating function of the heat preservation box is controlled to be turned on.

6. The control method according to claim 5, characterized by, The control method further comprises: In a case that the vehicle is in a non-running state, the first temperature sensor, the second temperature sensor, the third temperature sensor, the switching assembly, the battery loop water pump, and the heat preservation box are connected to the photovoltaic controller, so as to be powered by the photovoltaic power generation; In a case that the vehicle is in a running state, the first temperature sensor, the second temperature sensor, the switching assembly, and the battery loop water pump are switched to be powered and controlled by the low-voltage network of the vehicle.

7. The control method according to claim 3, characterized by, The control method further comprises: If the photovoltaic power generation is not connected to the vehicle high-voltage network through the bidirectional DC converter and the voltage of the storage battery is greater than or equal to a first preset voltage, it is determined that the storage battery does not satisfy the preset charging condition; If the photovoltaic power generation is not connected to the vehicle high-voltage network through the bidirectional DC converter and the voltage of the storage battery is less than the first preset voltage, it is determined that the storage battery satisfies the preset charging condition; If the photovoltaic power generation is connected to the vehicle high-voltage network through the bidirectional DC converter and the voltage of the storage battery is less than a second preset voltage, it is determined that the storage battery satisfies the preset charging condition, wherein the second preset voltage is less than the first preset voltage; If the photovoltaic power generation is connected to the vehicle high-voltage network through the bidirectional DC converter and the voltage of the storage battery is greater than or equal to the second preset voltage, it is determined that the storage battery does not satisfy the preset charging condition.

8. The control method according to claim 7, characterized by, The control method further comprises: If the photovoltaic power generation is not connected to the vehicle high-voltage network through the bidirectional DC converter and the voltage of the storage battery is less than a third preset voltage when the vehicle is in a running state, the bidirectional DC converter is controlled to step down the high-voltage power of the vehicle high-voltage network to charge the storage battery, and the third preset voltage is less than the second preset voltage.

9. The control method according to claim 3, characterized by, The step of supplying power to the load connected to the photovoltaic controller through photovoltaic power generation and connecting photovoltaic power generation to the vehicle high-voltage network through the bidirectional DC converter when the power generation power of the photovoltaic panel is greater than the load power connected to the photovoltaic controller and the storage battery does not satisfy the preset charging condition comprises: When the power generation power of the photovoltaic panel is greater than the load power connected to the photovoltaic controller and the storage battery does not satisfy the preset charging condition, the allowable charging power of the power battery is obtained; If the allowable charging power of the power battery is greater than a preset power, photovoltaic power generation is used to supply power to the load connected to the photovoltaic controller and to connect photovoltaic power generation to the vehicle high-voltage network through the bidirectional DC converter to charge the power battery.

10. A control device characterized by comprising: The control device comprises a memory, a processor, and a control program stored on the memory and executable on the processor, and the control program implements the steps of the control method according to any one of claims 3 to 9 when executed by the processor.

11. A computer readable storage medium, characterized in that, The computer readable storage medium stores a control program, and the control program implements the steps of the control method according to any one of claims 3 to 9 when executed by the processor.

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