Pure electric vehicle wind power generation photovoltaic auxiliary power supply system and control method

Abstract

The invention relates to the technical field of new energy automobiles, and discloses a pure electric automobile wind power generation photovoltaic auxiliary power supply system and a control method, and the system comprises an air inlet device, a rotary air duct, a generator, a booster, a photovoltaic panel, a controller, an AI intelligent module, a detection module, a storage battery and an inverter; the air inlet device comprises an air inlet door, an air control door and an air discharge door, the rotary air duct is in airflow communication with the air inlet device, the generator is connected with the rotary air duct through a sleeve shaft, the controller is electrically connected with the generator and the photovoltaic panel, and the AI intelligent module collects system operation data, divides the system operation data into three operation conditions and feeds back the three operation conditions to the controller. According to the system, wind power and photovoltaic power are integrated, wind energy and solar energy generated in the running process of the vehicle are fully utilized, the endurance mileage of the pure electric vehicle is effectively increased, and charging dependence is reduced; and air inlet, air control and air unloading are accurately regulated and controlled according to the vehicle speed interval, power generation is maximized at the medium-low speed, resistance is actively reduced at the high speed, and the efficiency and the driving performance are balanced.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, and in particular to a wind power generation photovoltaic auxiliary power supply system and control method for pure electric vehicles. Background Technology

[0002] With the rapid development of the new energy vehicle industry, pure electric vehicles have become the core development direction of the automotive industry due to their advantages such as zero emissions and low noise. However, pure electric vehicles generally suffer from insufficient driving range and high dependence on charging infrastructure, which seriously restricts their popularization. Among existing auxiliary power generation solutions, photovoltaic power generation alone is subject to unstable efficiency due to sunlight limitations. Therefore, designing an auxiliary power generation system that can fully utilize wind and solar energy during driving, dynamically adjust wind resistance and power generation efficiency, and achieve multi-energy synergistic optimization through intelligent control has become an urgent technical problem to be solved in this field. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies, such as insufficient driving range and high dependence on charging infrastructure, by proposing a pure electric vehicle wind power generation photovoltaic auxiliary power supply system and control method.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A wind power photovoltaic auxiliary power supply system for a pure electric vehicle includes an air intake device, a rotating wind tunnel, a generator, a booster, a photovoltaic panel, a controller, an AI intelligent module, a detection module, a battery, and an inverter. The air intake device includes an air intake damper, a control damper, and an exhaust damper. The rotating wind tunnel is connected to the air intake device. The generator is connected to the rotating wind tunnel via a sleeve shaft. The controller is electrically connected to the generator and the photovoltaic panel. The AI ​​intelligent module collects system operating data and feeds it back to the controller in three operating conditions. The detection module detects the battery's stored capacity, output, system current, voltage, and energy parameters. The battery stores the electrical energy generated by the generator and the photovoltaic panel. The inverter converts the 48V DC power from the battery to 220V AC power and outputs it to the vehicle's main battery, booster, and air intake device.

[0005] As a further description of the above technical solution: The generator is a three-phase AC 48V, 800W permanent magnet generator that converts mechanical energy into three-phase AC electrical energy.

[0006] As a further description of the above technical solution: The booster is a 220V AC 4W synchronous motor that drives the generator in a clockwise direction to assist in power generation when the vehicle speed is less than 36 km / h.

[0007] As a further description of the above technical solution: The rotating air duct includes: a drum-balanced air duct, a fan-blade linear air duct, and a rotating vertical air duct.

[0008] As a further description of the above technical solution: The controller integrates a three-phase rectifier circuit, an AC-DC voltage regulator circuit, and a signal acquisition circuit.

[0009] As a further description of the above technical solution: The AI ​​intelligent module is electrically connected to the controller and detection module via a CAN bus. The AI ​​intelligent module detects the generator's power output, voltage, current, operating time, and speed. The AI ​​intelligent module also detects the photovoltaic panel's power output, voltage, current, and operating time. Finally, the AI ​​intelligent module detects the power ratio between the battery and the trolley main battery.

[0010] As a further description of the above technical solution: The inverter is electrically connected to the booster and the air intake device, and is used to control power supply and power cut-off.

[0011] On the other hand, the present invention also provides a method for controlling the photovoltaic auxiliary power supply of wind power generation for pure electric vehicles, wherein the three operating conditions include medium-speed power generation, medium-high speed wind unloading, and high-speed wind control.

[0012] As a further description of the above technical solution: During the medium-speed power generation operation: when the vehicle speed is 36-70 km / h, the air intake device opens the air intake door, and the airflow drives the rotating fan to drive the generator to generate electricity. After the generator and photovoltaic power are processed by the controller, they supply power to the battery or the main battery of the electric vehicle. During the medium-high speed unloading operation: when the vehicle speed is 71-120 km / h, the unloading air vent is opened, the generator continues to generate electricity, and the electrical energy is processed and supplied to the battery or the main battery of the electric vehicle. During the high-speed wind control operation: when the vehicle speed is greater than 120 km / h, the air intake device closes all the air dampers, stops wind power generation, and photovoltaic power supplies the battery or the main battery of the electric vehicle.

[0013] The present invention has the following beneficial effects: This invention integrates wind power and photovoltaics, making full use of the wind and solar energy generated during vehicle operation, effectively improving the driving range of pure electric vehicles and reducing charging dependence; and precisely controlling the air intake, wind control, and wind discharge according to the vehicle speed range, maximizing power generation at low and medium speeds and actively reducing drag at high speeds, balancing efficiency and driving performance.

[0014] In this invention, the AI ​​intelligent module and controller achieve closed-loop control, dynamically optimize energy distribution, prioritize power supply to the main battery, and improve system stability and energy utilization; the low-power assist motor starts below 36 mph, reducing low-speed energy consumption of the main battery and enhancing start-up and low-speed smoothness; and the inverter enables flexible power supply for energy storage and auxiliary loads, with a simple structure and clear control. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a pure electric vehicle wind power generation photovoltaic auxiliary power supply system proposed in this invention; Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] To address the issues of insufficient driving range and high dependence on charging infrastructure, this application embodiment designs a pure electric vehicle wind power photovoltaic auxiliary power supply system and control method, including: an air intake device installed on the side of the vehicle front, equipped with three sets of electronically controlled air dampers, including an air intake damper, a control damper, and an exhaust damper, connected to the controller via an actuator; a rotating wind duct driven by a coupling to the generator input shaft, with blade angles adapted to the airflow direction, the rotating wind duct being selected from one of the following: a drum-balanced wind duct, a fan-blade linear wind duct, or a rotating vertical wind duct; a three-phase brushless 48V, 800W permanent magnet generator, with its output end connected to the controller rectifier module; and a 220V, 4W synchronous motor booster, which, when the vehicle speed is less than 36 km / h, rotates clockwise. The system powers a generator, which, along with a small-volume auxiliary generator from a rotating fan, operates within its rated speed range. A gear mechanism meshes with the drive shaft, and the power supply is connected to an inverter. A 1.5㎡ monocrystalline silicon photovoltaic panel is mounted on the roof, with its output connected to a controller and voltage regulator module. The system includes an MCU-based control unit integrating rectification, voltage regulation, and signal acquisition circuits; an embedded AI chip with multi-variable decision-making algorithms based on vehicle speed, light intensity, and power consumption, communicating via a CAN bus; a detection module with current and voltage sensors and a power metering chip for real-time parameter acquisition; a 48V, 50Ah lithium iron phosphate battery with charge / discharge protection; and a 48V to 220V sine wave inverter with a rated power of 1000W, integrating intelligent control.

[0018] Among them, when the generator speed is insufficient, the booster operates; when the wind power can meet the generator speed, a one-way clutch is used; when the wind power meets the generator speed, the inner circumferential outer shaft can be kept off or rotated slowly to avoid damage to the generator; when the trolley main battery is 20% depleted, the inverter supplies power to the trolley main battery. When the battery is fully charged, the controller uses a magnetic brake on the generator, or the inverter supplies power to the control dampers, to close all five dampers; and transmits the percentage of power of the generator, photovoltaic panels and battery along with the output power to the detection module to achieve verifiable and controllable operation.

[0019] Furthermore, since wind speed varies with vehicle speed, excessive wind speed can cause physical damage to the generator. Therefore, in low-speed conditions (below 36 km / h) for pure electric vehicles, the power booster is activated to assist drive, and the photovoltaic system prioritizes powering the power booster, with remaining power charging the battery. In medium-speed power generation conditions (36-70 km / h), wind power generation works in conjunction with the photovoltaic system, prioritizing battery charging, and then powering the vehicle's main battery after full charge. In medium-high-speed wind-reducing conditions (71-120 km / h), wind-reducing and resistance reduction are combined with base power generation, with energy stored or used to power the vehicle's main battery. In high-speed wind-controlling conditions (above 100 km / h), the wind damper is closed to stop wind power, and the photovoltaic system stores energy or powers the vehicle's main battery. When the vehicle is stationary, the photovoltaic system continues to charge and store energy, and the AI ​​intelligent module records data to optimize the next driving strategy. The specific relationship between vehicle speed and wind speed is shown in Table 1.

[0020] Table 1: Relationship between Electric Vehicle Speed ​​and Wind Speed Vehicle speed (km / h) 10 20 30 40 50 60 70 80 Wind speed (m / s) 2 3.9 9 14.6 16.2 19.3 22.8 26.1 It should be noted that when the pure electric vehicle travels at speeds above 80 km / h, the downward air discharge from the rotating fan outlet automatically activates, increasing the air outlet size. This self-discharging mechanism, using a weight-based system, requires no electricity. When the pure electric vehicle travels at speeds above 90 km / h, the upward air discharge from the rotating fan outlet automatically activates, using a wind-balanced automatic system to increase the air outlet size. Simultaneously, it adds counter-resistance to the upper half of the rotating fan, reducing the air inlet size. When the pure electric vehicle travels at speeds above 100 km / h, the rotating fan automatically controls the airflow, controlled by an AI intelligent module and powered by the inverter, closing all the dampers of the rotating fan.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wind power photovoltaic auxiliary power supply system for a pure electric vehicle, comprising an air intake device, a rotating wind tunnel, a generator, a booster, a photovoltaic panel, a controller, an AI intelligent module, a detection module, a battery, and an inverter; the air intake device includes an air intake damper, a control damper, and an exhaust damper; the rotating wind tunnel is connected to the air intake device for airflow; the generator is connected to the rotating wind tunnel via a sleeve shaft; the controller is electrically connected to the generator and the photovoltaic panel; the AI ​​intelligent module collects system operating data and feeds it back to the controller in three operating conditions; the detection module detects the battery's stored capacity, output capacity, and system current, voltage, and energy parameters; the battery stores the electrical energy generated by the generator and the photovoltaic panel; and the inverter converts the 48V DC power from the battery to 220V AC power and outputs it to the vehicle's main battery, booster, and air intake device.

2. The photovoltaic auxiliary power supply system for pure electric vehicles according to claim 1, characterized in that, The generator is a three-phase AC 48V, 800W permanent magnet generator that converts mechanical energy into three-phase AC electrical energy.

3. The photovoltaic auxiliary power supply system for pure electric vehicles according to claim 2, characterized in that, The booster is a 220V AC 4W synchronous motor that drives the generator in a clockwise direction to assist in power generation when the vehicle speed is less than 36 km / h.

4. A photovoltaic auxiliary power supply system for pure electric vehicles according to claim 3, characterized in that, The rotating air duct includes: a drum-balanced air duct, a fan-blade linear air duct, and a rotating vertical air duct.

5. A photovoltaic auxiliary power supply system for pure electric vehicles according to claim 4, characterized in that, The controller integrates a three-phase rectifier circuit, an AC-DC voltage regulator circuit, and a signal acquisition circuit.

6. A photovoltaic auxiliary power supply system for pure electric vehicles according to claim 5, characterized in that, The AI ​​intelligent module is electrically connected to the controller and detection module via a CAN bus. The AI ​​intelligent module detects the generator's power output, voltage, current, operating time, and speed. The AI ​​intelligent module also detects the photovoltaic panel's power output, voltage, current, and operating time. Finally, the AI ​​intelligent module detects the power ratio between the battery and the trolley main battery.

7. A photovoltaic auxiliary power supply system for pure electric vehicles according to claim 6, characterized in that, The inverter is electrically connected to the booster and the air intake device, and is used to control power supply and power cut-off.

8. A method for controlling photovoltaic auxiliary power supply for wind power generation in pure electric vehicles, characterized in that, The three operating conditions include medium-speed power generation, medium-to-high-speed air unloading, and high-speed wind control.

9. A method for controlling photovoltaic auxiliary power supply for pure electric vehicles based on claim 8, characterized in that, During the medium-speed power generation operation: when the vehicle speed is 36-70 km / h, the air intake device opens the air intake door, and the airflow drives the rotating fan to drive the generator to generate electricity. After the generator and photovoltaic power are processed by the controller, they supply power to the battery or the main battery of the electric vehicle. During the medium-high speed unloading operation: when the vehicle speed is 71-120 km / h, the unloading air door is opened, the generator continues to generate electricity, and the electrical energy is processed and supplied to the battery or the main battery of the electric vehicle. During the high-speed wind control operation: when the vehicle speed is greater than 120 km / h, the air intake device closes all the air dampers, stops wind power generation, and photovoltaic power supplies the battery or the main battery of the electric vehicle.

Images