Intelligent circulating range extending power generation method for electric vehicle

Abstract

The present application relates to the technical field of electric vehicle range extending power generation, in particular to an intelligent circulating range extending power generation method for electric vehicles, which generates power by driving a permanent magnet synchronous generator with a driving motor of an electric vehicle, outputs 12V-36V direct current, and after voltage stabilization by a module voltage stabilizer, intelligent control by a programmable controller, and precise voltage increase by a direct current step-up transformer, outputs direct current voltage matching the battery or driving system of the electric vehicle, and selectively supplies power to the battery or directly to the driving system through a two-way switching switch, forming a closed loop cycle of power generation, processing and supply. The method continuously generates power when the electric vehicle is running or idling, without the need for external charging equipment, effectively improving the driving range; the controller monitors the voltage in real time and has overvoltage protection and fault self-detection functions, the step-up transformer adjusts the output voltage steplessly, and is suitable for electric vehicles of different voltage grades; the whole is integrated conveniently, stable in operation, and high in power conversion efficiency; the present application is suitable for various electric two-wheeled, three-wheeled and four-wheeled vehicles.

Description

Technical Field

[0001] The present invention relates to the technical field of range-extending power generation for electric vehicles, and particularly to an intelligent cycle range-extending power generation method for electric vehicles. Background Art

[0002] With the popularization of new energy vehicles, electric vehicles have become the mainstream short-distance transportation tools due to their energy conservation, environmental protection, low usage cost, and convenient operation. However, traditional electric vehicles generally have technical defects such as short cruising range and frequent charging. Especially for heavy-duty models such as electric tricycles and four-wheelers, the battery power is consumed quickly, and the outdoor charging facilities are imperfect, which greatly limits the scope of use of electric vehicles.

[0003] The existing range-extending technologies for electric vehicles are mainly divided into three categories: one is to install a large-capacity battery, which can improve the cruising range, but increases the weight of the electric vehicle, reduces the driving efficiency, and still needs external charging; the second is to externally connect a fuel range extender, which consumes fuel, does not conform to the concept of energy conservation and environmental protection, has a large volume, is inconvenient to install, and will also cause noise pollution; the third is simple hub / motor power generation range extension. This type of technology only realizes the simple conversion of mechanical energy into electrical energy, lacks voltage stabilization and intelligent control links, has large fluctuations in the generated voltage, is likely to cause overcharging of the battery, unstable voltage of the drive system, and even burns out on-vehicle electrical appliances, and does not form a complete electric energy cycle supply loop, resulting in poor range-extending effect.

[0004] Therefore, those skilled in the art have provided an intelligent cycle range-extending power generation method for electric vehicles to solve the problems raised in the above background art. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides an intelligent cycle range-extending power generation method for electric vehicles. Using the original motor of the electric vehicle as the power source, it drives a generator to generate low-voltage electricity of 12V - 36V. Through multi-stage processing of voltage stabilization, intelligent control, and voltage boosting, it accurately outputs a voltage adapted to the battery or drive system of the electric vehicle, realizes the cyclic supply of electric energy to the battery / drive system, and forms a closed-loop intelligent range-extending circuit. This method does not require external charging equipment or additional dedicated power sources, has clear steps, rigorous control logic, accurate voltage conversion, stable operation, can effectively improve the cruising range of electric vehicles, and is convenient for integrated installation and suitable for various electric vehicles.

[0006] Taking the motor and generator supporting the electric vehicle as the core power generation unit, through multi-stage electric energy processing of voltage stabilization, intelligent control, and voltage boosting, it converts the 12V - 36V direct current generated by the generator into a direct current voltage matching the battery or drive system of the electric vehicle, and realizes the cyclic supply of electric energy to the battery / drive system of the electric vehicle. The specific steps are as follows: S1. Cyclic power generation start-up: The generator is linked to the electric vehicle drive motor. The motor drives the generator to rotate synchronously, converting mechanical energy into electrical energy and continuously outputting 12V-36V DC power as the basic electrical energy for cyclic range extender power generation. S2. Voltage Stabilization Pre-processing: The 12V-36V DC power output from the generator is connected to the module voltage regulator. The module voltage regulator performs precise voltage stabilization on the fluctuating input voltage and outputs a stable 12V-36V DC power, eliminating the impact of voltage fluctuations on subsequent processing steps. S3 Intelligent Voltage Regulation: The controller is electrically linked with the module voltage regulator, and monitors the input and output voltage parameters of the module voltage regulator in real time. When the voltage exceeds the preset range of 12V-36V, the controller automatically cuts off the circuit to achieve overvoltage protection; when the voltage returns to the preset range, the controller automatically closes the circuit to ensure stable output of regulated power. S4, Precision Boost Conversion: The stable 12V-36V DC power regulated by the controller is connected to the boost transformer, which precisely boosts the voltage to a DC voltage that matches the electric vehicle battery or drive system. S5. Power Cyclic Supply: The DC power output from the step-up transformer is selectively connected to the charging terminal of the electric vehicle battery or the power supply terminal of the drive system to realize the cyclic utilization of power, continuously replenish / supply power to the electric vehicle, and complete intelligent cyclic range-extending power generation. The above steps form a closed-loop power generation-processing-supply cycle, which continues during the operation of the electric vehicle.

[0007] Preferably, in step S1, the generator is a permanent magnet synchronous generator, which is coaxially and fixedly connected to the electric vehicle drive motor. There is no additional power transmission structure. The motor is the original drive motor of the electric vehicle, and there is no need to add a dedicated power source. The generator's power output is positively correlated with the motor's operating speed. The higher the electric vehicle's driving speed, the more stable the electrical energy output by the generator.

[0008] Preferably, in step S2, the module voltage regulator is a dedicated DC voltage regulator with a voltage regulation accuracy error controlled within ±0.5V. It can regulate any input voltage within the range of 12V-36V, and the output voltage is at the same level as the input voltage without fluctuation.

[0009] Preferably, in step S3, the controller is a programmable microcontroller with a built-in voltage detection module, overvoltage protection module and automatic switching program. The detection frequency is 50ms / time, which can realize real-time voltage monitoring and millisecond-level circuit switching. The controller can also be manually programmed to set a voltage protection threshold in the range of 12V-36V according to the actual use scenario of the electric vehicle.

[0010] Preferably, in step S4, the step-up transformer is a DC step-up transformer with a step-up efficiency of ≥90%. The step-up process is stepless and precise, and the output voltage value can be adjusted within the range of 36V-80V according to the actual voltage requirements of the electric vehicle battery or drive system, adapting to the charging of electric vehicle batteries or the power supply of drive systems of different voltage levels.

[0011] Preferably, in step S5, the output terminal of the step-up transformer is equipped with a dual-channel switching switch and an overcurrent protection module. The dual-channel switching switch enables one-button switching between battery charging and drive system power supply. The rated current of the overcurrent protection module is calibrated according to the rated charging current of the electric vehicle battery to prevent battery overcharging damage.

[0012] Preferably, in step S5, the power supply follows an intelligent logic of replenishing power first and then supplying power: when the remaining power of the electric vehicle battery is lower than a preset threshold, the battery is replenished first; when the remaining power of the battery reaches the preset full charge threshold, the power supply is automatically switched to the drive system to reduce battery power consumption.

[0013] Preferably, in steps S1-S5, all electrical connection nodes adopt a sealed wiring structure, and the wiring terminals are wrapped with an insulating protective layer that is anti-oxidation, anti-leakage, and anti-rainwater erosion. Each power processing component and the power generation unit are integrated and fixed on a special bracket for the electric vehicle frame. The bracket has reserved heat dissipation gaps to ensure the working stability of each component.

[0014] Preferably, the method further includes a fault self-detection step, in which the controller is electrically linked with the module voltage regulator and the step-up transformer to detect the working status of each component in real time. When a component experiences an abnormal voltage or current, the controller issues an audible and visual alarm signal and cuts off the circuit connection of the corresponding faulty component to prevent the fault from spreading.

[0015] Preferably, the power parameters of the generator, module voltage regulator, controller, and step-up transformer are matched in a gradient. The rated power of the generator determines the maximum load capacity of the module voltage regulator, controller, and step-up transformer, ensuring that each component operates stably at full load within the input voltage range of 12V-36V and the output voltage range compatible with the battery / drive system.

[0016] The technical effects and advantages of this invention are as follows: This method realizes a closed-loop power cycle of power generation-voltage stabilization-regulation-voltage boosting-cycle supply. It continuously generates its own power during the operation of the electric vehicle without the need for external charging equipment. It prioritizes charging the battery and then supplies power to the drive system, which greatly reduces battery power consumption and effectively improves the driving range of the electric vehicle. It directly uses the electric vehicle's original drive motor to drive the generator to generate electricity, without any additional power transmission structure or the need to add a dedicated generator motor. Moreover, all core components are commercially available standardized parts, making integration and installation convenient. It can be directly installed on existing electric vehicles, resulting in low modification costs and strong scalability. Through multi-stage processing of voltage regulation, intelligent control, and voltage boost, the 12V-36V low-voltage electricity is accurately converted into the appropriate voltage, with a voltage regulation accuracy of ±0.5V and a boost efficiency of ≥90%. The controller also realizes real-time voltage monitoring and millisecond-level overvoltage protection, effectively avoiding component damage caused by voltage fluctuations / overvoltage and ensuring the stability of system operation. The controller can be manually programmed to set the voltage threshold, and the step-up transformer can steplessly adjust the output voltage within the range of 36V-80V, adapting to electric vehicle batteries and drive systems of different voltage levels. It also supports one-click switching between battery charging and drive system power supply, making it easy to operate. Multiple protection mechanisms are added, including overvoltage protection, overcurrent protection, fault self-detection, and audible and visual alarms. All wiring terminals are protected by sealed insulation, and the component integrated bracket has reserved heat dissipation gaps to adapt to complex outdoor operating environments, prevent overcharging, overvoltage, high temperature, and fault propagation, and improve system lifespan and operational safety. The power parameters of the generator, module voltage regulator, controller, and step-up transformer are matched to ensure that each component operates stably under full load with no excess power loss. The overall power conversion efficiency is high, which is in line with the concept of energy conservation and environmental protection. Attached Figure Description

[0017] Figure 1 This is a flowchart of an intelligent cyclic range-extending power generation method for electric vehicles provided in an embodiment of this application; Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0019] Example 1

[0020] Please see Figure 1 This embodiment provides a method for intelligent cyclic range-extending power generation for electric vehicles. It relies on four core components: a generator, a module voltage regulator, a controller, and a step-up transformer. These components work in conjunction with the electric vehicle's original drive motor to form a closed-loop range-extending power generation circuit consisting of power generation, voltage regulation, voltage boosting, and cyclic supply. The specific steps are as follows: S1, Cyclic power generation start-up The permanent magnet synchronous generator is coaxially and fixedly linked with the original drive motor of the electric vehicle, without any additional gears, chains or other power transmission structures, ensuring that the motor can directly drive the generator to rotate synchronously when it is running. After the electric vehicle starts, the mechanical energy generated by the drive motor is transferred to the generator, which converts the mechanical energy into electrical energy and continuously outputs 12V-36V DC power. In this process, the generator's power output is positively correlated with the motor's operating speed. When the electric vehicle is running normally, the voltage output by the generator is more stable, providing a reliable base power for subsequent power processing.

[0021] In this step, the existing drive motor of the electric vehicle is used directly as the power source for power generation, without the need to add a dedicated motor, which greatly reduces the installation cost. In addition, the generator is small in size and highly integrated, and does not occupy the effective space of the electric vehicle.

[0022] S2, Voltage Stabilization Pretreatment The 12V-36V DC output from the generator is connected to a dedicated DC voltage regulator module. The input voltage of this regulator is perfectly matched to the generator's output voltage range, and the voltage regulation accuracy error is controlled within ±0.5V. Since the generator's output voltage fluctuates slightly with the electric vehicle's driving speed, the voltage regulator module precisely regulates the fluctuating input voltage, eliminates voltage deviation, and outputs a stable 12V-36V DC voltage at the same level as the input voltage. This ensures the stability of the input voltage for subsequent intelligent regulation and boost stages, and avoids component damage or reduced conversion efficiency due to voltage fluctuations.

[0023] S3, Intelligent Voltage Regulation The programmable microcontroller is used as the core controller and is electrically linked with the module voltage regulator. The controller has a built-in voltage detection module, overvoltage protection module, and automatic on / off program. The detection frequency is 50ms / time, which can monitor the input voltage and output voltage parameters of the module voltage regulator in real time.

[0024] The core working logic of the controller is as follows: When the voltage exceeds the preset range of 12V-36V, the controller immediately sends an electrical signal to automatically cut off the circuit in milliseconds, realizing overvoltage protection and preventing overvoltage from damaging the subsequent step-up transformer and electric vehicle battery / drive system; When the voltage is detected to return to the preset range of 12V-36V, the controller automatically closes the circuit, and the module voltage regulator resumes voltage regulation, ensuring that the stable power after voltage regulation is continuously output to the step-up transformer. The controller supports manual programming settings and can flexibly adjust the voltage protection threshold within the range of 12V-36V according to the different usage scenarios of electric vehicles, making it more adaptable.

[0025] S4, Precision Boost Conversion The stable 12V-36V DC power regulated by the controller is connected to the DC step-up transformer. This step-up transformer is specially designed for electric vehicle range extenders, with a step-up efficiency of ≥90% and adopts stepless precision step-up technology, which can accurately step up the input stable low-voltage DC power to a DC voltage that matches the electric vehicle battery or drive system.

[0026] The output voltage of the step-up transformer can be flexibly adjusted according to the actual needs of the electric vehicle: within the range of 36V-80V, it can match the charging needs of electric vehicle batteries of different voltage levels, such as 36V, 48V, 60V, 72V, etc., and can also directly match the working voltage requirements of the electric vehicle drive system, achieving precise voltage adaptation, high energy conversion efficiency, and no excess power loss.

[0027] S5, Electricity Cycle Supply The DC power output from the step-up transformer is used as circulating electrical energy and connected to the battery charging terminal or drive system power supply terminal of the electric vehicle, forming a cycle of electrical energy utilization. The specific implementation method is as follows: The output of the step-up transformer is equipped with a dual-channel switch and an overcurrent protection module. The dual-channel switch can realize one-button mechanical switching between battery charging and drive system power supply, which is convenient to operate. The rated current of the overcurrent protection module is calibrated according to the rated charging current of the electric vehicle battery. During the charging process, the current is monitored in real time, and the circuit is automatically cut off when the current exceeds the rated value to prevent the battery from being overcharged and damaged. The power supply follows an intelligent logic of replenishing power first and then supplying power: preset low battery power threshold and full battery power threshold. When the remaining battery power is lower than the low battery power threshold, the battery is replenished first by boosted DC power. When the remaining battery power reaches the full battery power threshold, it switches to directly supply power to the drive system, replacing part of the battery power, reducing the battery power consumption, and realizing the continuous range extension of electric vehicles. This step forms a closed loop with S1: after the drive system receives power, it drives the electric vehicle to move. The motor continues to run to drive the generator to generate electricity. This process is repeated, and the cycle of "power generation-processing-supply" is continuously completed during the operation of the electric vehicle. No external charging equipment is required, which greatly improves the driving range of the electric vehicle.

[0028] Auxiliary technology requirements To ensure the stability and service life of the entire method, all electrical connection nodes adopt a sealed wiring structure, and the wiring ends are wrapped with an insulating protective layer that is anti-oxidation, anti-leakage, and anti-rainwater erosion, adapting to complex outdoor operating environments. All components of the generator, module voltage regulator, controller, and step-up transformer are integrated and fixed on a special metal bracket for electric vehicle frame. Heat dissipation gaps are reserved between the bracket and each component to ensure the heat dissipation effect of each component during operation and avoid component failure due to high temperature.

[0029] Fault self-detection process This method also adds a fault self-detection function. The controller, module voltage regulator, and step-up transformer are electrically linked across the entire domain to detect the working voltage and current parameters of each component in real time. When a component experiences an abnormal voltage or current, the controller immediately issues an audible and visual alarm signal to remind the user to troubleshoot the fault and simultaneously disconnects the circuit connection of the corresponding faulty component to prevent the fault from spreading, thereby further improving the working safety of the entire range-extended power generation system.

[0030] Component power matching requirements The power parameters of the generator, module voltage regulator, controller, and step-up transformer are matched in a gradient: based on the rated power of the generator, the maximum carrying power of the module voltage regulator, controller, and step-up transformer is not lower than the rated power of the generator, ensuring that each component can work stably at full load without power loss within the 12V-36V input range and the output voltage range compatible with the battery / drive system, thereby improving the overall power conversion efficiency.

[0031] When using this invention: I. Selection of Core Components Generator: A 500W permanent magnet synchronous generator is selected and fixed coaxially with the original 1500W DC drive motor of the electric tricycle; Module voltage regulator: Selects a dedicated DC voltage regulator, with an input of 12V-36V, a voltage regulation accuracy of ±0.5V, and a stable DC output voltage; Controller: STM32 programmable microcontroller is selected, with built-in voltage detection, overvoltage protection, and automatic on / off program, and the detection frequency is 50ms / time; Step-up transformer: A DC step-up transformer is selected, with a step-up efficiency of 92%, and stepless adjustment of input 12V-36V and output 36V-80V; Auxiliary components: dual-channel mechanical transfer switch, 7A overcurrent protection module (matching the rated charging current of a 72V battery), stainless steel integrated bracket (with a 5cm heat dissipation gap), and sealed insulated wiring terminals.

[0032] II. Parameter Preset Controller voltage protection threshold: set to 12V-36V, automatically switching the circuit on or off if the voltage exceeds this range; Battery charge thresholds: Low charge threshold 25%, Full charge threshold 90%; Step-up transformer output voltage: set to 72V - matching the 72V electric tricycle battery / drive system voltage. Specific implementation steps

[0033] S1. Cyclic power generation start-up: Fix the 500W permanent magnet synchronous generator coaxially with the original 1500W DC drive motor of the electric tricycle. Start the electric tricycle, and the drive motor will drive the generator to rotate synchronously. The generator will convert mechanical energy into electrical energy and continuously output 24V DC power in the range of 12V-36V. S2. Voltage regulation preprocessing: Connect the 24V DC power to the module's voltage regulator, which will regulate the voltage and output a stable 24V DC power with a voltage regulation accuracy of ±0.5V, eliminating small voltage fluctuations. S3, Intelligent Voltage Regulation: The controller monitors the input / output voltage of the module's voltage regulator in real time - both are 24V. Within the 12V-36V threshold, the circuit remains closed, and a stable 24V DC power is continuously output to the step-up transformer. If a momentary overvoltage occurs during driving - such as a sudden increase to 38V, the controller immediately cuts off the circuit and automatically closes it after the voltage recovers to within 36V. S4, Precise Boost Conversion: A stable 24V DC power supply is connected to the boost transformer, which precisely boosts the voltage to 72V DC power with an efficiency of 92% - within the range of 36V-80V, matching the voltage requirements of a 72V electric tricycle; S5. Power Cycle Supply: When the remaining power of the 72V battery of the electric tricycle is 20% to below the low power threshold of 25%, the dual-path switch is switched to the battery charging end, and 72V DC power is used to replenish the battery. The overcurrent protection module controls the charging current within 7A to prevent overcharging. When the battery power reaches 90% to the full power threshold, the switch is switched to the drive system power supply end, and 72V DC power directly supplies power to the drive system of the electric tricycle, replacing part of the battery power. Continuous cycle: After the drive system receives power, it drives the electric tricycle to drive continuously. The drive motor synchronously drives the generator to generate electricity, repeating the above steps S1-S5 to form a closed loop, thereby realizing the continuous range extension of the electric tricycle. Implementation effect

[0034] The 72V electric tricycle in this embodiment has a range of about 80km on a full charge without implementing this method. After implementing this method, the range is significantly improved - laboratory simulated working condition test data shows that the range can be improved by more than 50%. The entire range-extending power generation system is integrated and installed inside the electric tricycle frame, without occupying effective usable space. The system works stably during driving, without voltage fluctuations, overcharging, or other problems. Moreover, the installation cost is low, which meets the usage needs of civilian electric vehicles.

[0035] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A method for intelligent cyclic range-extending power generation of electric vehicles, characterized in that, With the motor and generator supporting the electric vehicle as the core power generation unit, through multi-level power processing of voltage stabilization, intelligent regulation, and voltage boosting, the 12V - 36V DC power generated by the generator is converted into a DC voltage matching the electric vehicle battery or drive system, realizing the cyclic supply of power to the electric vehicle battery / drive system. The specific steps are as follows: S1. Cyclic power generation startup: Connect the generator to the electric vehicle drive motor in a linkage manner. The motor rotates to drive the generator to rotate synchronously, converting mechanical energy into electrical energy, and continuously outputting 12V - 36V DC power as the basic power for cyclic range extension power generation. S2. Voltage stabilization preprocessing: Connect the 12V - 36V DC power output by the generator to the module voltage stabilizer. The module voltage stabilizer performs precise voltage stabilization processing on the fluctuating input voltage and outputs stable 12V - 36V DC power to eliminate the impact of voltage fluctuations on subsequent processing links. S3. Intelligent voltage regulation: The controller is electrically linked to the module voltage stabilizer, and in real-time detects the input and output voltage parameters of the module voltage stabilizer. When the voltage exceeds the preset range of 12V - 36V, the controller automatically cuts off the circuit to achieve overvoltage protection; when the voltage returns to the preset range, the controller automatically closes the circuit to ensure the stable output of the power after voltage stabilization. S4. Precise voltage boosting conversion: Connect the stable 12V - 36V DC power regulated by the controller to the step-up transformer. The step-up transformer precisely boosts it to a DC voltage matching the electric vehicle battery or drive system. S5. Cyclic power supply: Selectively connect the DC power output by the step-up transformer to the charging terminal of the electric vehicle battery or the power supply terminal of the drive system, realizing the cyclic utilization of power, continuously replenishing power / supplying power to the electric vehicle, and completing intelligent cyclic range extension power generation. The above steps form a closed-loop power generation - processing - supply cycle, which continuously occurs during the operation of the electric vehicle.

2. The method for intelligent cyclic range-extending power generation of electric vehicles according to claim 1, characterized in that, In step S1, the generator is a permanent magnet synchronous generator, coaxially and fixedly connected to the electric vehicle drive motor, without an additional power transmission structure. The motor is the original drive motor of the electric vehicle, and there is no need to add a dedicated power generation power source. The power generation power of the generator is positively correlated with the motor rotation speed. The higher the driving speed of the electric vehicle, the more stable the electric energy output by the generator.

3. The method for intelligent cyclic range-extending power generation of electric vehicles according to claim 1, characterized in that, In step S2, the module voltage stabilizer is a DC special voltage stabilizer, and the voltage stabilization accuracy error is controlled within the range of ±0.5V. It can perform voltage stabilization on any input voltage within the range of 12V - 36V, and the output voltage is of the same grade as the input voltage without fluctuation.

4. The method for intelligent cyclic range-extending power generation of electric vehicles according to claim 1, characterized in that, In step S3, the controller is a programmable microcontroller, with a built-in voltage detection module, overvoltage protection module, and automatic on / off program. The detection frequency is 50ms / time, which can realize real-time monitoring of voltage and millisecond-level on / off of the circuit. Moreover, the controller can be manually programmed to set the voltage protection threshold within the range of 12V - 36V according to the actual usage scenario of the electric vehicle.

5. The intelligent cyclic range-extending power generation method for electric vehicles according to claim 1, characterized in that, In step S4, the step-up transformer is a DC step-up transformer, with a step-up efficiency ≥90%. The step-up process is a stepless and precise step-up, and it can adjust the output voltage value within the range of 36V - 80V according to the actual voltage requirements of the electric vehicle battery or drive system, adapting to the power replenishment of electric vehicle batteries or power supply of drive systems with different voltage levels.

6. The method for intelligent cyclic range-extending power generation of electric vehicles according to claim 1, characterized in that, In step S5, the output terminal of the step-up transformer is equipped with a dual-channel switch and an overcurrent protection module. The dual-channel switch enables one-button switching between battery charging and drive system power supply. The rated current of the overcurrent protection module is calibrated according to the rated charging current of the electric vehicle battery to prevent battery overcharging damage.

7. The method for intelligent cyclic range-extending power generation of electric vehicles according to claim 6, characterized in that, In step S5, the power supply follows the intelligent logic of replenishing power first and then supplying power: when the remaining power of the electric vehicle battery is lower than the preset threshold, the battery is replenished first; when the remaining power of the battery reaches the preset full charge threshold, the power supply is automatically switched to the drive system to reduce battery power consumption.

8. The method for intelligent cyclic range-extending power generation of electric vehicles according to claim 1, characterized in that, In steps S1-S5, all electrical connection nodes adopt a sealed wiring structure, and the wiring terminals are wrapped with an insulating protective layer that is resistant to oxidation, leakage, and rainwater erosion. Each power processing component and the power generation unit are integrated and fixed on a special bracket for the electric vehicle frame. The bracket has reserved heat dissipation gaps to ensure the working stability of each component.

9. The method for intelligent cyclic range-extending power generation of electric vehicles according to claim 1, characterized in that, The method also includes a fault self-detection step. The controller is electrically linked with the module voltage regulator and step-up transformer to detect the working status of each component in real time. When a component experiences voltage or current abnormality, the controller issues an audible and visual alarm signal and cuts off the circuit connection of the corresponding faulty component to prevent the fault from spreading.

10. The method for intelligent cyclic range-extending power generation of electric vehicles according to claim 1, characterized in that, The power parameters of the generator, module voltage regulator, controller, and step-up transformer are matched in a gradient manner. The rated power of the generator determines the maximum load capacity of the module voltage regulator, controller, and step-up transformer, ensuring that each component operates stably under full load within the input voltage range of 12V-36V and the output voltage range compatible with the battery / drive system.

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