Control method and control system of new energy automobile and new energy automobile

Abstract

The invention provides a control method and system of a new energy automobile and the new energy automobile. The new energy vehicle comprises a photovoltaic power generation system, a power battery system, a whole vehicle low-voltage storage battery and a bidirectional power converter. And the photovoltaic power generation system is electrically connected with the whole vehicle low-voltage storage battery. And the power battery system is electrically connected with the whole vehicle low-voltage storage battery through the bidirectional power converter. The control method comprises the steps that the running state of the new energy automobile is determined; if the new energy automobile is in the parking state, the photovoltaic power generation system is controlled to charge a low-voltage storage battery of the whole automobile or charge the low-voltage storage battery of the whole automobile and a power battery system according to the power generation power of the photovoltaic power generation system. The photovoltaic power generation system of the new energy automobile does not need an energy storage battery, the automobile cost is reduced, the power generation power of the photovoltaic power generation system can be fully utilized, the energy distribution efficiency is optimized, and the charging cost of the whole automobile is saved.

Description

Technical Field

[0001] This application relates to the field of new energy vehicle control technology, and in particular to a control method, control system and new energy vehicle. Background Technology

[0002] As users demand increasingly longer driving ranges for new energy vehicles, automakers have conducted multi-dimensional research and development on charging efficiency and refueling methods. In recent years, photovoltaic solar power generation technology has gradually become one of the diversified refueling methods favored by major automakers in the application of new energy vehicles.

[0003] Currently, photovoltaic solar power generation is mostly used in grid-connected energy storage scenarios such as charging stations and integrated charging / swapping stations. As a vehicle-mounted solar auxiliary power solution, it is also frequently used in RV systems. However, vehicle-mounted solar auxiliary power requires the vehicle to be equipped with an energy storage battery, making the system complex and increasing the cost per vehicle. Furthermore, in practical applications, solar power is often only used for low-voltage battery grid-connected auxiliary power, resulting in low photovoltaic power generation utilization and failing to reduce vehicle charging costs. Summary of the Invention

[0004] This application provides a control method, control system, and new energy vehicle that are low-cost and have high energy efficiency.

[0005] This application provides a control method for a new energy vehicle, the new energy vehicle including a photovoltaic power generation system, a power battery system, a vehicle low-voltage battery, and a bidirectional power converter; the photovoltaic power generation system is electrically connected to the vehicle low-voltage battery; the power battery system is electrically connected to the vehicle low-voltage battery through the bidirectional power converter; the control method includes: Determine the operating status of the new energy vehicle; If the new energy vehicle is parked, the photovoltaic power generation system is controlled to charge the vehicle's low-voltage battery, or to charge both the vehicle's low-voltage battery and the power battery system, based on the power generation capacity of the photovoltaic power generation system.

[0006] In some embodiments, a new energy vehicle includes a photovoltaic power generation system, a power battery system, a vehicle low-voltage battery, and a bidirectional power converter. The photovoltaic power generation system is electrically connected to the vehicle low-voltage battery. The power battery system is electrically connected to the vehicle low-voltage battery via the bidirectional power converter. Through the bidirectional power converter, the power battery and the vehicle low-voltage battery can charge each other. When the photovoltaic power generation system is charging the vehicle low-voltage battery, it can also charge the power battery. If the new energy vehicle is parked, the photovoltaic power generation system is controlled to charge the vehicle low-voltage battery, or to charge both the vehicle low-voltage battery and the power battery system, based on the available power output of the photovoltaic power generation system. In this way, the photovoltaic power generation system directly charges the vehicle low-voltage battery or the power battery, eliminating the need for an energy storage battery and reducing vehicle costs. Furthermore, it can fully utilize the available power output of the photovoltaic power generation system, optimize energy distribution efficiency, and save on vehicle charging costs.

[0007] Optionally, controlling the photovoltaic power generation system to charge the vehicle's low-voltage battery, or to charge both the vehicle's low-voltage battery and the power battery system, based on the system's power output, includes: If the power output of the photovoltaic power generation system is greater than the high-voltage auxiliary power threshold of the new energy vehicle, the photovoltaic power generation system is controlled to charge the low-voltage battery of the vehicle and the power battery system is charged through the bidirectional power converter.

[0008] In some embodiments, when the power output of the photovoltaic power generation system exceeds the high-voltage auxiliary power threshold, charging only the low-voltage battery of the vehicle will result in excess power waste. By charging the power battery simultaneously through a bidirectional power converter, the energy utilization rate of the photovoltaic power generation system can be improved, and energy idleness can be avoided.

[0009] Optionally, controlling the photovoltaic power generation system to charge the vehicle's low-voltage battery, or to charge both the vehicle's low-voltage battery and the power battery system, based on the system's power output, includes: If the power output of the photovoltaic power generation system is greater than the energy consumption of the photovoltaic power generation system, but not greater than the high-voltage auxiliary energy threshold of the new energy vehicle, the photovoltaic power generation system is controlled to charge the low-voltage battery of the vehicle.

[0010] In some embodiments, when the power output of the photovoltaic power generation system is greater than the energy consumption of the photovoltaic power generation system itself, but does not exceed the high-voltage auxiliary energy threshold of the new energy vehicle, only the low-voltage battery of the whole vehicle is charged, which can improve the energy utilization rate of the photovoltaic power generation system and avoid energy idleness.

[0011] Optionally, after determining the operating state of the new energy vehicle, the control method further includes: If the new energy vehicle is in operation, control the photovoltaic power generation system to charge the vehicle's low-voltage battery, and control the power battery system to charge the vehicle's low-voltage battery through the bidirectional power converter.

[0012] In some embodiments, when a new energy vehicle is in operation, the power demand of the vehicle's low-voltage battery is relatively large, and the power output of the photovoltaic power generation system is unstable during vehicle operation. By controlling both the photovoltaic power generation system and the power battery system to charge the vehicle's low-voltage battery, the energy consumption requirements of the vehicle's low-voltage battery can be met, thereby improving the safety and reliability of vehicle operation.

[0013] Optionally, after determining the operating state of the new energy vehicle, the control method further includes: If the new energy vehicle is parked and the power output of the photovoltaic power generation system is not greater than the energy consumption of the photovoltaic power generation system, the power battery system is controlled to charge the low-voltage battery of the vehicle.

[0014] In some embodiments, when the new energy vehicle is parked and the photovoltaic power generation system has insufficient power output, the power battery system is controlled to charge the vehicle's low-voltage battery to meet the energy consumption requirements of the vehicle's low-voltage battery.

[0015] Optionally, before determining the operating state of the new energy vehicle, the control method further includes: If the photovoltaic power generation system is in a fault state, control the power battery system to charge the vehicle's low-voltage battery and prohibit the photovoltaic power generation system from starting.

[0016] In some embodiments, when the photovoltaic power generation system is in a fault state, prohibiting the photovoltaic power generation system from starting can improve the stability of vehicle operation and control the power battery system to charge the vehicle's low-voltage battery to meet the energy consumption requirements of the vehicle's low-voltage battery.

[0017] This application provides a computer-readable storage medium having a program stored thereon, which, when executed by a processor, implements the control method for a new energy vehicle as described in any of the preceding claims.

[0018] This application provides a control system, including one or more processors, for implementing the control method for new energy vehicles as described in any of the above claims.

[0019] This application provides a new energy vehicle, including: a photovoltaic power generation system, a power battery system, a vehicle low-voltage battery, a bidirectional power converter, and a control system as described above; the photovoltaic power generation system is electrically connected to the vehicle low-voltage battery; the power battery system is electrically connected to the vehicle low-voltage battery through the bidirectional power converter; the control system is communicatively connected to the photovoltaic power generation system and the power battery system.

[0020] Optionally, the control system includes a vehicle controller, and the photovoltaic power generation system includes an electrically connected photovoltaic controller and a photovoltaic roof system, with the vehicle controller communicating with the photovoltaic controller.

[0021] In some embodiments, the vehicle controller is communicatively connected to the photovoltaic controller to coordinate the control of the photovoltaic power generation system and the power battery system, which can improve the power generation utilization rate of the photovoltaic power generation system.

[0022] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0024] Figure 1 The diagram shown is a structural block diagram of one embodiment of the new energy vehicle of this application.

[0025] Figure 2 The diagram shown is a flowchart of an embodiment of the control method for new energy vehicles provided in this application.

[0026] Figure 3 The diagram shown is a flowchart of another embodiment of the control method for new energy vehicles according to this application.

[0027] Figure 4 As shown Figure 3 The flowchart shown is an example of the steps “Perform photovoltaic power generation control”.

[0028] Figure 5 The diagram shown is a structural block diagram of an embodiment of the control system of this application. Detailed Implementation

[0029] This application provides a control method, a control system, and a new energy vehicle. The control method, control system, and new energy vehicle of this application will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the features in the following embodiments and implementations can be combined with each other.

[0030] Figure 1 The diagram shown is a structural block diagram of one embodiment of the new energy vehicle 10 of this application. Figure 1 As shown, the new energy vehicle 10 includes: a photovoltaic power generation system 11, a power battery system 12, a vehicle low-voltage battery 13, a bidirectional power converter 14, and a control system 15.

[0031] The photovoltaic power generation system 11 is electrically connected to the vehicle's low-voltage battery 13. The photovoltaic power generation system 11 can charge the vehicle's low-voltage battery 13. The photovoltaic power generation system 11 includes a photovoltaic controller 112 and a photovoltaic roof system 111 that are electrically connected. The photovoltaic controller 112 is connected to the vehicle grid via a low-voltage 12V / 24V electrical interface.

[0032] The power battery system 12 is electrically connected to the vehicle's low-voltage battery 13 via a bidirectional power converter 14. The bidirectional power converter 14 can perform bidirectional power conversion, converting the high-voltage electricity from the power battery system 12 to low-voltage electricity to supply the vehicle's low-voltage battery 13, and vice versa. When the bidirectional power converter 14 converts low-voltage electricity to high-voltage electricity, the photovoltaic power generation system 11 charges the power battery system 12. Through the bidirectional power converter 14, the photovoltaic power generation system 11 simultaneously provides auxiliary power to both the vehicle's low-voltage battery 13 and the power battery system 12, simplifying the system and reducing costs.

[0033] The control system 15 is communicatively connected to the photovoltaic power generation system 11 and the power battery system 12. The control system 15 controls the operation of the photovoltaic power generation system 11 and the power battery system 12. The photovoltaic power generation system 11 and the power battery system 12 operate independently and will not affect each other. The photovoltaic power generation system 11 can be installed in the new energy vehicle 10 through pre-installation or aftermarket installation.

[0034] In some embodiments, the power battery system 12 is located in the chassis of the new energy vehicle 10. The vehicle chassis and the photovoltaic power generation system 11 are connected to the grid through the positive and negative terminals of the vehicle's low-voltage battery 13, which makes it easier to retrofit the photovoltaic power generation system 11 in the aftermarket. The photovoltaic power generation system 11 and the power battery system 12 are relatively independent, and faults are less likely to affect each other.

[0035] The control system 15 includes a vehicle controller, which is communicatively connected to the photovoltaic controller 112. The vehicle controller can send control commands to the photovoltaic power generation system 11 to control its operation. The vehicle controller includes a vehicle energy management control program, which controls the photovoltaic power generation system 11 through the photovoltaic controller, ensuring that the control logic of the photovoltaic power generation system 11 and the vehicle energy management control program are matched and coordinated. The vehicle controller and the photovoltaic controller 112 are communicatively connected via a CAN interface.

[0036] In some embodiments, the vehicle controller is communicatively connected to the photovoltaic controller 112 to coordinate the control of the photovoltaic power generation system 11 and the power battery system 12, which can improve the power generation utilization rate of the photovoltaic power generation system 11.

[0037] The new energy vehicle 10 also includes a high-voltage auxiliary drive controller 20. The high-voltage auxiliary drive controller 20 includes a bidirectional power converter 14, an on-board charger 16, and a PDU (Power Distribution Unit) power distribution module 17. The photovoltaic power generation system 11 is electrically connected to the grid through the output interfaces of the PDU power distribution module 17 and the bidirectional power converter 14.

[0038] The new energy vehicle 10 also includes a motor controller 21, an air conditioning compressor 22, and a defrosting PTC (Positive Temperature Coefficient Thermistor) 23, all of which are connected to the high-voltage auxiliary drive controller 20.

[0039] The new energy vehicle 10 also includes a fast charging interface 24 and a slow charging interface 25. The fast charging interface 24 is connected to the power battery system 12. The slow charging interface 25 is connected to the high-voltage auxiliary drive controller 20.

[0040] Figure 2 The diagram shows a flowchart of an embodiment of the control method 300 for new energy vehicles provided in this application. The control method 300 for new energy vehicles includes steps S31 and S32.

[0041] Step S31: Determine the operating status of the new energy vehicle 10.

[0042] The operating status of the new energy vehicle 10 includes both operating and stationary states. The operating status of the new energy vehicle 10 can be determined through signals such as vehicle speed, gear position, and power system status. The operating status of the new energy vehicle 10 may affect the performance of the photovoltaic power generation system 11. When the new energy vehicle 10 is operating, the power output of the photovoltaic power generation system 11 may change with the vehicle's operating status, resulting in unstable power output. When the new energy vehicle 10 is stationary, the power output of the photovoltaic power generation system 11 is relatively stable.

[0043] Step S32: If the new energy vehicle 10 is in a parked state, according to the power output of the photovoltaic power generation system 11, control the photovoltaic power generation system 11 to charge the vehicle's low-voltage battery 13, or to charge the vehicle's low-voltage battery 13 and the power battery system 12.

[0044] When the new energy vehicle 10 is parked, the photovoltaic power generation system 11 is controlled to operate based on its available power output. Depending on the available power output, the photovoltaic power generation system 11 is controlled to charge the vehicle's low-voltage battery 13, or simultaneously charge both the vehicle's low-voltage battery 13 and the power battery system 12. When the photovoltaic power generation system 11's available power output is sufficient to charge the vehicle's low-voltage battery 13 and has surplus power, it is controlled to charge both the vehicle's low-voltage battery 13 and the power battery system 12, thereby improving the energy utilization rate of the photovoltaic power generation system 11.

[0045] In some embodiments, the new energy vehicle 10 includes a photovoltaic power generation system 11, a power battery system 12, a vehicle low-voltage battery 13, and a bidirectional power converter 14. The photovoltaic power generation system 11 is electrically connected to the vehicle low-voltage battery 13. The power battery system 12 is electrically connected to the vehicle low-voltage battery 13 through the bidirectional power converter 14. Through the bidirectional power converter 14, the power battery system 12 and the vehicle low-voltage battery 13 can charge each other. When the photovoltaic power generation system 11 is charging the vehicle low-voltage battery 13, it can also charge the power battery system 12. If the new energy vehicle 10 is in a parked state, the photovoltaic power generation system 11 is controlled to charge the vehicle low-voltage battery 13, or charge both the vehicle low-voltage battery 13 and the power battery system 12, according to the power generation capacity of the photovoltaic power generation system 11. In this way, the photovoltaic power generation system 11 directly charges the vehicle low-voltage battery 13 or the power battery system 12 without the need for an energy storage battery, reducing vehicle costs. Furthermore, the power generation capacity of the photovoltaic power generation system 11 can be fully utilized to optimize energy distribution efficiency and save on vehicle charging costs.

[0046] In some embodiments, step S32 includes: if the power output of the photovoltaic power generation system 11 is greater than the high voltage auxiliary power threshold of the new energy vehicle 10, controlling the photovoltaic power generation system 11 to charge the low voltage battery 13 of the vehicle and charging the power battery system 12 through the bidirectional power converter 14.

[0047] The high-voltage auxiliary power threshold is greater than the rated charging power of the vehicle's low-voltage battery 13. When the power output of the photovoltaic power generation system 11 exceeds the high-voltage auxiliary power threshold, charging only the vehicle's low-voltage battery 13 will result in excess power waste. By charging the power battery system 12 simultaneously through the bidirectional power converter 14, the energy utilization rate of the photovoltaic power generation system 11 can be improved, and energy idleness can be avoided.

[0048] In some embodiments, the photovoltaic power generation system 11 prioritizes charging the vehicle's low-voltage battery 13. After meeting the charging power requirements of the vehicle's low-voltage battery 13, the photovoltaic power generation system 11 charges the power battery system 12. The vehicle's low-voltage battery 13 outputs the power from the photovoltaic power generation system 11 to the bidirectional power converter 14 to supply power to the power battery system 12.

[0049] In some embodiments, step S32 includes: if the power generation capacity of the photovoltaic power generation system 11 is greater than the energy consumption of the photovoltaic power generation system 11 and not greater than the high voltage auxiliary power threshold of the new energy vehicle 10, controlling the photovoltaic power generation system 11 to charge the low voltage battery 13 of the vehicle.

[0050] The photovoltaic power generation system 11 consumes its own energy during operation. When the power generation capacity of the photovoltaic power generation system 11 is greater than its own energy consumption, controlling the photovoltaic power generation system 11 to charge the vehicle's low-voltage battery 13 can prevent the available power of the photovoltaic power generation system 11 from being too low and causing additional loss of power to the vehicle's low-voltage battery 13.

[0051] When the power output of the photovoltaic power generation system 11 is greater than its own energy consumption, but does not exceed the high-voltage auxiliary power threshold of the new energy vehicle 10, it means that the photovoltaic power generation system 11 has no excess power to provide to the power battery system 12. At this time, the photovoltaic power generation system 11 only charges the low-voltage battery 13 of the vehicle, which can improve the energy utilization rate of the photovoltaic power generation system 11 and avoid energy idleness.

[0052] refer to Figure 2 After step S31, the control method 300 further includes step S33: if the new energy vehicle 10 is in operation, control the photovoltaic power generation system 11 to charge the vehicle's low-voltage battery 13, and control the power battery system 12 to charge the vehicle's low-voltage battery 13 through the bidirectional power converter 14.

[0053] When the new energy vehicle 10 is in operation, the low-voltage load power consumption of the vehicle is relatively large. In some embodiments, the total power consumption of the vehicle's low-voltage load is about 2-3kW, while in charging mode, the total low-voltage power consumption is about 300W. The total power consumption in operation mode is much greater than that in charging mode. Due to the limited area of ​​the photovoltaic panels, the total power generation capacity of the photovoltaic power generation system 11 is generally less than 3kW. Moreover, the power generation capacity of the photovoltaic power generation system will fluctuate greatly due to the unstable sunlight during vehicle operation. The power generation capacity of the photovoltaic power generation system 11 can usually only guarantee the auxiliary power needs of the vehicle's low-voltage battery 13.

[0054] When the new energy vehicle 10 is in operation, the power demand of the vehicle's low-voltage battery 13 is relatively large, and the power output of the photovoltaic power generation system 11 is unstable when the vehicle is in operation. By controlling both the photovoltaic power generation system 11 and the power battery system 12 to charge the vehicle's low-voltage battery 13, the energy consumption requirements of the vehicle's low-voltage battery 13 can be met, thereby improving the safety and reliability of vehicle operation.

[0055] In some embodiments, after step S31, the control method 300 further includes: if the new energy vehicle 10 is in a parked state and the power generation capacity of the photovoltaic power generation system 11 is not greater than the energy consumption of the photovoltaic power generation system 11, controlling the power battery system 12 to charge the vehicle's low-voltage battery 13.

[0056] When the power output of the photovoltaic power generation system 11 is not greater than its energy consumption, the photovoltaic power generation system 11 cannot provide additional power output. The control system 12 charges the vehicle's low-voltage battery 13 to ensure that the vehicle's low-voltage battery 13 does not become depleted.

[0057] When the new energy vehicle 10 is parked and the photovoltaic power generation system 11 has insufficient power generation capacity, the power battery system 12 is controlled to charge the vehicle's low-voltage battery 13 to meet the energy consumption requirements of the vehicle's low-voltage battery 13, thus balancing energy saving and vehicle reliability.

[0058] In some embodiments, before step S31, the control method 300 further includes: if the photovoltaic power generation system 11 is in a fault state, controlling the power battery system 12 to charge the vehicle low-voltage battery 13 and prohibiting the photovoltaic power generation system 11 from starting.

[0059] When the photovoltaic power generation system 11 is in a fault state, the photovoltaic power generation system 11 is prohibited from starting, which can improve the stability of vehicle operation and control the power battery system 12 to charge the vehicle's low-voltage battery 13 to meet the energy consumption requirements of the vehicle's low-voltage battery 13.

[0060] Figure 3 The diagram shown is a flowchart of another embodiment of the control method 300 for new energy vehicles of this application.

[0061] The control method 300 for new energy vehicles includes steps 301 to 312.

[0062] Step 301: The control system 15 performs a self-test and wakes up the relevant controllers.

[0063] The relevant controllers include photovoltaic controller 112 and high-voltage auxiliary drive controller 20.

[0064] Step 302: Determine if the control system 15 has a fault.

[0065] If the control system 15 is fault-free, proceed to step 303 and enter standby mode.

[0066] If the control system 15 malfunctions, proceed to step 304 to report the fault and prohibit the vehicle from being connected to high voltage.

[0067] Step 305: Determine if there is a request for high-voltage power-on.

[0068] If there is a high-voltage power-on request, proceed to step 306: vehicle power-on control, vehicle energy management control.

[0069] If there is no request for high-voltage power-on, return to step 301.

[0070] Step 307: Determine if there is photovoltaic power generation.

[0071] If there is photovoltaic power generation, proceed to step 308 to control photovoltaic power generation.

[0072] If there is no photovoltaic power generation, proceed to step 309 to determine whether the conditions for high voltage power supply to the whole vehicle are met.

[0073] If the conditions for applying high voltage to the entire vehicle are met, proceed to step 310 to apply high voltage to the entire vehicle.

[0074] If the conditions for high voltage power supply to the entire vehicle are not met, return to step 301.

[0075] Step 311: Determine whether the low-voltage electrical conditions for the whole vehicle are met.

[0076] If the conditions for low voltage power supply to the whole vehicle are met, proceed to step 312 to lower the voltage power supply to the whole vehicle and enter sleep mode.

[0077] If the low-voltage electrical conditions for the whole vehicle are not met, return to step 301.

[0078] Figure 4 As shown Figure 3 The flowchart shows an embodiment of step 308, "Perform photovoltaic power generation control".

[0079] The photovoltaic power generation control of the new energy vehicle 10 includes four modes. Mode 1: Controls the photovoltaic power generation system 11 and the power battery system 12 to charge the vehicle's low-voltage battery 13. Mode 2: Controls the photovoltaic power generation system 11 to charge the vehicle's low-voltage battery 13. Mode 3: Disables the photovoltaic power generation system 11. Mode 4: Controls the photovoltaic power generation system 11 to charge both the vehicle's low-voltage battery 13 and the power battery system 12.

[0080] When in mode 1, the photovoltaic roof system 111 outputs 60VDC to the photovoltaic controller 112, and the photovoltaic controller 112 outputs 12VDC to the vehicle's low-voltage battery 13. The power battery system 12 outputs 400~800VDC to the bidirectional power converter 14, and the bidirectional power converter 14 outputs 12VDC to the vehicle's low-voltage battery 13.

[0081] When in mode 2, the photovoltaic roof system 111 outputs 60VDC to the photovoltaic controller 112, and the photovoltaic controller 112 outputs 12VDC to the vehicle's low-voltage battery 13.

[0082] When in mode 3, the photovoltaic roof system 111 does not output electrical energy. The power battery system 12 outputs 400~800VDC to the bidirectional power converter 14, and the bidirectional power converter 14 outputs 12VDC to the vehicle's low-voltage battery 13.

[0083] When in mode 4, the photovoltaic roof system 111 outputs 60VDC to the photovoltaic controller 112, and the photovoltaic controller 112 outputs 12VDC to the vehicle's low-voltage battery 13. The bidirectional power converter 14 outputs 400~800VDC to the power battery system 12.

[0084] Step 308, "Perform photovoltaic power generation control", includes steps 401 to 413.

[0085] Step 401: Detect vehicle malfunctions.

[0086] Step 402: Determine if there is a fault in the photovoltaic power generation system 11.

[0087] If the photovoltaic power generation system 11 malfunctions, execute step 403 to store and report the fault, and prohibit the photovoltaic power generation system from starting.

[0088] Step 404: Control the photovoltaic power generation system to operate in mode 3.

[0089] If the photovoltaic power generation system 11 is fault-free, proceed to step 405 to determine the operating status of the new energy vehicle 10.

[0090] If the new energy vehicle 10 is in operation, execute step 406 to control the photovoltaic power generation system to work in mode 1.

[0091] Step 407: Determine whether the power generation exit conditions of Mode 1 are met.

[0092] If the conditions for exiting power generation in Mode 1 are met, exit photovoltaic power generation control.

[0093] If the conditions for exiting power generation in Mode 1 are not met, return to step 406.

[0094] If the new energy vehicle 10 is in a parked state, proceed to step 408 to determine whether the power generation capacity is greater than the high-voltage auxiliary energy threshold.

[0095] If the generated power is greater than the high-voltage auxiliary power threshold, execute step 409 to control the photovoltaic power generation system 11 to work in mode 4.

[0096] Step 410: Determine whether the power generation exit conditions of Mode 4 are met.

[0097] If the conditions for exiting power generation in Mode 4 are met, exit photovoltaic power generation control.

[0098] If the conditions for exiting power generation in Mode 4 are not met, return to step 409.

[0099] If the generated power is not greater than the high-voltage auxiliary power threshold, proceed to step 411 to determine whether the generated power is greater than its own energy consumption and less than the high-voltage auxiliary power threshold.

[0100] If the power generated is not greater than its own energy consumption, return to step 401.

[0101] If the generated power is greater than its own energy consumption but less than the high-voltage auxiliary energy threshold, execute step 412 to control the photovoltaic power generation system to work in mode 2.

[0102] Step 413: Determine whether the power generation exit conditions for Mode 2 are met.

[0103] If the conditions for exiting power generation in Mode 2 are met, exit photovoltaic power generation control.

[0104] If the mode 2 power generation exit condition is not met, return to step 412.

[0105] Figure 5 The diagram shown is a structural block diagram of an embodiment of the control system 15 of this application.

[0106] like Figure 5 As shown, the control system 15 includes one or more processors 41 for implementing the control method 300 as described above.

[0107] In some embodiments, the control system 15 may include a computer-readable storage medium 42, which may store a program that can be invoked by a processor 41, and may include a non-volatile storage medium. In some embodiments, the control system 15 may include memory 43 and an interface 44. In some embodiments, the control system 15 may also include other hardware depending on the specific application.

[0108] The computer-readable storage medium 42 of this application embodiment stores a program that, when executed by the processor 41, is used to implement the control method 300 described above.

[0109] This application may take the form of a computer program product implemented on one or more computer-readable storage media 42 (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing program code. The computer-readable storage media 42 includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented using any method or technology. The information may be computer-readable instructions, data structures, program modules, or other data. Examples of computer-readable storage media 42 include, but are not limited to: phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transfer medium that can be used to store information accessible by a computing device.

Claims

1. A control method of a new energy vehicle, characterized by, The new energy vehicle comprises a photovoltaic power generation system, a power battery system, a vehicle low-voltage storage battery and a bidirectional power converter; the photovoltaic power generation system is electrically connected with the vehicle low-voltage storage battery; the power battery system is electrically connected with the vehicle low-voltage storage battery through the bidirectional power converter; the control method comprises: determining the running state of the new energy vehicle; if the new energy vehicle is in a parking state, controlling the photovoltaic power generation system to charge the vehicle low-voltage storage battery or the vehicle low-voltage storage battery and the power battery system according to the available power of the photovoltaic power generation system.

2. The control method of a new energy vehicle according to claim 1, characterized in that, The control method according to the available power of the photovoltaic power generation system, the photovoltaic power generation system charges the vehicle low-voltage storage battery or the vehicle low-voltage storage battery and the power battery system, comprising: if the available power of the photovoltaic power generation system is greater than the high-voltage auxiliary energy threshold of the new energy vehicle, the photovoltaic power generation system is controlled to charge the vehicle low-voltage storage battery, and the power battery system is charged through the bidirectional power converter.

3. The control method of claim 1, wherein, The control method according to the available power of the photovoltaic power generation system, the photovoltaic power generation system charges the vehicle low-voltage storage battery or the vehicle low-voltage storage battery and the power battery system, comprising: if the available power of the photovoltaic power generation system is greater than the energy consumption of the photovoltaic power generation system and not greater than the high-voltage auxiliary energy threshold of the new energy vehicle, the photovoltaic power generation system is controlled to charge the vehicle low-voltage storage battery.

4. The control method of claim 1, wherein After determining the running state of the new energy vehicle, the control method further comprises: if the new energy vehicle is in a running state, the photovoltaic power generation system is controlled to charge the vehicle low-voltage storage battery, and the power battery system is controlled to charge the vehicle low-voltage storage battery through the bidirectional power converter.

5. The control method of a new energy vehicle according to claim 1, characterized in that, After determining the running state of the new energy vehicle, the control method further comprises: if the new energy vehicle is in a parking state, and the available power of the photovoltaic power generation system is not greater than the energy consumption of the photovoltaic power generation system, the power battery system is controlled to charge the vehicle low-voltage storage battery.

6. The control method of a new energy vehicle according to claim 1, characterized in that, Before determining the running state of the new energy vehicle, the control method further comprises: if the photovoltaic power generation system is in a fault state, the power battery system is controlled to charge the vehicle low-voltage storage battery, and the photovoltaic power generation system is prohibited from starting.

7. A computer-readable storage medium, characterized in that, A program is stored thereon, which is executed by a processor to implement the control method of the new energy vehicle according to any one of claims 1 to 6.

8. A control system characterized by, One or more processors are included for implementing the control method of the new energy vehicle according to any one of claims 1 to 6.

9. A new energy vehicle, characterized in that, comprises: a photovoltaic power generation system, a power battery system, a vehicle low-voltage storage battery, a bidirectional power converter and a control system according to claim 8; the photovoltaic power generation system is electrically connected with the vehicle low-voltage storage battery; the power battery system is electrically connected with the vehicle low-voltage storage battery through the bidirectional power converter; the control system is in communication connection with the photovoltaic power generation system and the power battery system.

10. The new energy vehicle according to claim 9, characterized in that, The control system comprises a whole vehicle controller, the photovoltaic power generation system comprises a photovoltaic controller and a photovoltaic roof system connected electrically, and the whole vehicle controller is connected in communication with the photovoltaic controller. The control system comprises a whole vehicle controller, the photovoltaic power generation system comprises a photovoltaic controller and a photovoltaic roof system connected electrically, and the whole vehicle controller is connected in communication with the photovoltaic controller.

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