Electric vehicle self-charging system and self-charging method thereof

Abstract

The invention discloses an electric vehicle self-charging system and a self-charging method thereof. The system comprises a first motor, a second motor, a first generator, a second generator, a vehicle-mounted battery and a control circuit. In the running process of the vehicle, the system converts kinetic energy of the vehicle into electric energy and stores the electric energy in a vehicle-mounted battery through an energy recovery mode and a parallel power generation mode; when the vehicle is in a static state, through a static power generation mode or a low-power operation mode, self-charging is achieved through a low-power-consumption motor and a high-efficiency generator. The control circuit dynamically adjusts the working mode of each component according to the running state and working condition of the vehicle, and the energy recovery and charging efficiency is optimized.

Description

Technical Field

[0001] The present invention relates to the field of new energy technology, and in particular to a self-charging system and a self-charging method for an electric vehicle. Background Art

[0002] With the rapid development of new energy vehicles, charging technology has become one of the key factors restricting their popularization. Current charging methods, such as charging piles and battery swapping devices, have problems such as high cost, low efficiency, and complex infrastructure construction. In the existing technology, although some vehicles use energy recovery systems, most of these systems only recover a small amount of energy when the vehicle is braking or coasting, and the energy recovery efficiency is low, which cannot meet the vehicle's full charging needs. In addition, the existing technology lacks a system that can achieve efficient energy recovery and charging both when the vehicle is running and when it is stationary. Summary of the Invention

[0003] Based on this, an embodiment of the present application provides an electric vehicle self-charging system and a self-charging method thereof, which generates electrical energy by driving a generator through an electric motor to achieve energy recycling.

[0004] In a first aspect, a self-charging system for an electric vehicle is provided, the system comprising:

[0005] A first electric motor is installed in the vehicle drive system and is used to drive the vehicle;

[0006] a second motor connected in parallel with the first motor, for providing power to drive the generator to generate electrical energy in a set mode;

[0007] a first generator electrically connected to the first electric motor and capable of switching to a generator mode when the vehicle is coasting, braking or decelerating to convert the vehicle's kinetic energy into electrical energy;

[0008] a second generator electrically connected to the second motor, for being driven by the second motor to operate in a static power generation mode or a low power operation mode to convert mechanical energy into electrical energy;

[0009] an on-board battery, electrically connected to the first motor, the second motor, the first generator and the second generator, serving as an energy storage unit for storing electrical energy generated by the first generator and the second generator and providing power for the first motor and the second motor;

[0010] The control circuit is electrically connected to the first motor, the second motor, the first generator, the second generator and the vehicle battery, and is used to dynamically control the operating mode switching of the first motor and the second motor according to the vehicle's operating status and working conditions, adjust the power generation process of the first generator and the second generator, and manage the transmission, distribution and storage of electric energy.

[0011] Optionally, the first motor and the second motor are connected in parallel via a power management system, wherein the power management system is configured to dynamically allocate an operating mode of the second motor according to the remaining power of the vehicle and the battery charge when the first motor drives the vehicle, so as to switch the second motor to a generator mode when necessary, thereby achieving parallel power generation;

[0012] The control circuit includes an energy recovery control unit, which automatically triggers the first electric motor to switch to generator mode when the vehicle is coasting, braking or decelerating, controls the power generation power of the first generator to ensure that the recovered electric energy is smoothly transmitted to the vehicle battery and prevent overcharging.

[0013] Optionally, both the first generator and the second generator are equipped with an intelligent monitoring unit, which is used to monitor the operating status of the generator in real time, including speed, torque and power generation efficiency, and feed back the monitoring data to the control circuit. The control circuit dynamically adjusts the operating parameters of the generator according to the monitoring data to optimize the power generation efficiency.

[0014] Optionally, the control circuit also includes a parallel power generation control unit. When the vehicle is traveling at a constant speed, the parallel power generation control unit controls the second motor to switch to generator mode according to the remaining power of the vehicle and the battery power, so that the second generator uses the remaining power of the vehicle to generate electrical energy and charge the on-board battery, thereby further improving energy utilization efficiency.

[0015] Optionally, the static power generation mode includes a trickle charging function, and when the second motor drives the second generator to perform static power generation, the control circuit automatically switches to the trickle charging mode according to the power state of the on-board battery to extend battery life and optimize the charging process;

[0016] The control circuit also includes a safety protection module, which is used to monitor the voltage, current and temperature of the vehicle-mounted battery in real time and automatically cut off the relevant circuit when an abnormal situation is detected.

[0017] Optionally, in the low-power operating mode, the control circuit dynamically adjusts the output power of the second motor according to the remaining power of the vehicle battery and the power requirements of the vehicle auxiliary system to ensure that the electric energy generated by the high-efficiency generator can both maintain the operation of the vehicle auxiliary system and charge the vehicle battery.

[0018] Optionally, the second electric motor and the second generator are installed in the trunk or chassis of the vehicle to form an independent static charging module, which operates independently when the vehicle is stationary and is not connected in parallel with the vehicle's drive system;

[0019] Both the first generator and the second generator are equipped with an intelligent monitoring unit, which is used to monitor the operating status of the generator in real time, including speed, torque and power generation efficiency, and feed back the monitoring data to the control circuit. The control circuit dynamically adjusts the operating parameters of the generator according to the monitoring data to optimize the power generation efficiency.

[0020] Optionally, the control circuit also includes a low-power operation control unit. When the vehicle is briefly parked or needs to maintain basic functions, the low-power operation control unit dynamically adjusts the output power of the second motor according to the remaining power of the vehicle battery and the power requirements of the vehicle auxiliary system to ensure that the electric energy generated by the high-efficiency generator can both maintain the operation of the vehicle auxiliary system and charge the vehicle battery.

[0021] In a second aspect, a process flow of a self-charging system for an electric vehicle as described in any one of the first aspects is provided, comprising: dynamically controlling the switching of operating modes of a first motor and a second motor according to the operating state and working condition of the vehicle during operation of the vehicle; wherein, when the vehicle is coasting, braking, or decelerating, controlling the first motor to switch to generator mode, causing the first generator to convert the vehicle's kinetic energy into electrical energy and transmit the energy to the vehicle's battery through a control circuit for charging; and when the vehicle is traveling at a constant speed, controlling the second motor to switch to generator mode according to the vehicle's remaining power and the charge state of the vehicle's battery, causing the second generator to utilize the vehicle's remaining power to generate electrical energy and charge the vehicle's battery;

[0022] When the vehicle is stationary, the static power generation mode or low power operation mode is selected according to the battery status and the parking time of the vehicle;

[0023] The voltage, current and temperature of the vehicle battery are monitored in real time through the control circuit to ensure the safety and stability of the charging process.

[0024] Optionally, the method further includes:

[0025] During vehicle operation, the intelligent monitoring unit monitors the operating status of the first generator and the second generator in real time, including speed, torque and power generation efficiency;

[0026] dynamically adjusting operating parameters of the first generator and the second generator based on the monitoring data to optimize power generation efficiency;

[0027] In the vehicle's static power generation mode, the speed and output power of the second electric motor are automatically adjusted according to the charge state of the on-board battery and the parking time of the vehicle to achieve optimal charging efficiency and battery life optimization.

[0028] The beneficial effects of the technical solutions provided in the embodiments of the present application include at least:

[0029] (1) By recovering kinetic energy during braking and coasting during vehicle operation and using low-power electric motors and high-efficiency generators for self-charging when stationary, the energy recovery and utilization efficiency is significantly improved, energy waste is reduced, and the endurance of electric vehicles is improved.

[0030] (2) It can dynamically adjust the energy recovery and charging strategies according to the actual operating status and working conditions of the vehicle, and is applicable to a variety of operating scenarios, including vehicle driving, static parking, etc., which enhances the flexibility and adaptability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0032] Figure 1 A block diagram of an electric vehicle self-charging system provided in an embodiment of the present application.

[0033] Figure 2 A self-charging flow chart of an electric vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0035] In the description of the present invention, the terms "comprise", "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may also include other steps or units that are not explicitly listed but are inherent to these processes, methods, products or apparatuses, or steps or units that are added based on further optimization solutions conceived by the present invention.

[0036] The following describes the electric vehicle self-charging system and self-charging method of the present invention in detail with reference to specific embodiments. These embodiments are only used to illustrate the technical solutions of the present invention and do not limit the scope of protection of the present invention.

[0037] With the rapid development of new energy vehicles, charging technology has become a key factor hindering their widespread adoption. Current charging methods, such as charging stations and battery swapping, are plagued by high costs, low efficiency, and complex infrastructure. This system aims to explore an efficient and low-cost charging solution. By using an electric motor to drive a generator to generate electricity, this system achieves energy recycling, forming a complete energy recycling system and providing a new charging model for new energy vehicles.

[0038] The innovations of this application are mainly reflected in the following aspects:

[0039] Energy recovery and utilization: Through the coordinated work of the electric motor and generator, the vehicle's kinetic energy can be efficiently recovered and reused.

[0040] Intelligent control and dynamic adjustment: Combined with intelligent algorithms, energy recovery and charging strategies are dynamically adjusted according to vehicle operating conditions.

[0041] Multi-scenario application: The system is not only suitable for energy recovery during vehicle operation, but can also achieve self-charging through low-power electric motors and high-efficiency generators when the vehicle is stationary.

[0042] Specifically, if Figure 1 A block diagram of an electric vehicle self-charging system is given. The system includes:

[0043] A first electric motor is installed in the vehicle drive system and is used to drive the vehicle;

[0044] a second motor connected in parallel with the first motor and configured to provide power in a set mode to drive the generator to generate electrical energy;

[0045] a first generator electrically connected to the first electric motor and capable of switching to a generator mode when the vehicle is coasting, braking, or decelerating to convert the vehicle's kinetic energy into electrical energy;

[0046] a second generator electrically connected to the second motor, for being driven by the second motor to operate in a static power generation mode or a low power operation mode, thereby converting mechanical energy into electrical energy;

[0047] an on-board battery, electrically connected to the first motor, the second motor, the first generator, and the second generator, serving as an energy storage unit for storing electrical energy generated by the first generator and the second generator and providing power to the first motor and the second motor;

[0048] The control circuit is electrically connected to the first motor, the second motor, the first generator, the second generator and the vehicle battery, and is used to dynamically control the operating mode switching of the first motor and the second motor according to the vehicle's operating status and working conditions, adjust the power generation process of the first generator and the second generator, and manage the transmission, distribution and storage of electric energy.

[0049] The first motor and the second motor are connected in parallel through a power management system. The power management system is used to dynamically allocate the working mode of the second motor according to the remaining power of the vehicle and the battery power when the first motor drives the vehicle, so that it can switch to generator mode when necessary to achieve parallel power generation.

[0050] Both the first generator and the second generator are equipped with an intelligent monitoring unit, which is used to monitor the operating status of the generator in real time, including speed, torque and power generation efficiency, and feed the monitoring data back to the control circuit. The control circuit dynamically adjusts the operating parameters of the generator according to the monitoring data to optimize the power generation efficiency.

[0051] The control circuit includes an energy recovery control unit, which automatically triggers the first electric motor to switch to generator mode when the vehicle is coasting, braking or decelerating, and controls the power generation power of the first generator to ensure that the recovered electric energy is smoothly transmitted to the vehicle battery and prevent overcharging.

[0052] The control circuit also includes a parallel power generation control unit. When the vehicle is traveling at a constant speed, the parallel power generation control unit controls the second electric motor to switch to generator mode based on the vehicle's remaining power and battery charge, so that the second generator uses the vehicle's remaining power to generate electricity and charge the on-board battery, further improving energy utilization efficiency.

[0053] The static power generation mode includes a trickle charging function. When the second motor drives the second generator for static power generation, the control circuit automatically switches to trickle charging mode according to the power status of the vehicle battery to extend battery life and optimize the charging process.

[0054] In low-power mode, the control circuit dynamically adjusts the output power of the second electric motor based on the remaining battery charge and the power requirements of the vehicle's auxiliary systems. This ensures that the energy generated by the high-efficiency generator is sufficient to both maintain the operation of the vehicle's auxiliary systems and charge the vehicle's battery. The control circuit also includes a safety protection module that monitors the battery's voltage, current, and temperature in real time and automatically shuts down the relevant circuits if an abnormality is detected.

[0055] From the above, it can be seen that the focus of this application is to include two sets of electric motors and generators, which are used to drive the vehicle and recover energy respectively:

[0056] 1. Two sets of electric motors: one for driving the vehicle and the other for generating electricity with low power consumption.

[0057] 2. Two generators: one is the electric motor that drives the vehicle and can also switch to generator mode, and the other is a generator adapted for low-power electric motors. They convert mechanical energy into electrical energy to charge the vehicle battery.

[0058] 3. On-board battery: acts as an energy storage unit to store recovered energy and provide power to the electric motor.

[0059] 4. Control circuit: regulates and controls the transmission and distribution of electrical energy to ensure stable operation of the system.

[0060] The charging situation during operation includes the system achieving energy recovery and charging through the following methods during vehicle operation:

[0061] 1. Energy recovery mode:

[0062] When the vehicle is coasting, braking, or decelerating, the car's dual-drive electric motors automatically switch to generator mode. The generators convert the vehicle's kinetic energy into electrical energy, which is then transferred to the onboard battery for charging via a control circuit.

[0063] 2. Parallel power generation mode:

[0064] When the vehicle is climbing a hill, the car's dual-drive electric motors switch off and operate as generators. At a constant speed, one motor continues to drive the vehicle while the other automatically switches to generator mode. The generators use the vehicle's excess power to generate electricity, which then charges the battery, further improving energy efficiency.

[0065] 3. Trunk charging pack:

[0066] 1) Static power generation mode:

[0067] The vehicle's battery powers a low-power electric motor in the trunk, which in turn drives a high-efficiency generator. This generator converts mechanical energy into electrical energy, which is then transferred to the vehicle's battery for charging via a control circuit. This mode is similar to the vehicle's internal self-charging process, where the low-power electric motor and high-efficiency generator work together to charge the vehicle's battery. Trickle charging begins when the battery is nearly full, and can be continued throughout the entire process if time permits. This is typically used when the vehicle is parked for extended periods (such as overnight) or during normal operation.

[0068] 2) Low power operation mode:

[0069] The system can switch to low-power operation mode, reducing energy consumption from the vehicle's battery. Using the remaining energy in the battery, it activates a low-power electric motor in the trunk, which drives a high-efficiency generator. The electricity generated by the high-efficiency generator can be used to maintain the operation of the vehicle's auxiliary systems (such as electronic devices) while simultaneously charging the battery. This is ideal for short periods of time when the vehicle is parked or needs to maintain basic functionality.

[0070] The system advantages are:

[0071] 1. Efficient energy utilization: Reduce energy waste by recovering the kinetic energy during vehicle braking.

[0072] 2. Flexibility: The system can dynamically adjust energy recovery and charging strategies based on the vehicle’s actual operating conditions.

[0073] 3. Low cost: Compared with traditional charging piles and battery replacement devices, this system has lower construction and operation costs.

[0074] 4. Environmental protection: Reduce dependence on traditional energy and reduce carbon emissions.

[0075] Optimized and upgraded to:

[0076] 1. System optimization: further improve the efficiency of motors and generators and reduce energy losses.

[0077] 2. Security:

[0078] The battery management system (BMS) monitors the battery status in real time, including parameters such as voltage, current, and temperature, to optimize the charging strategy, extend battery life, and ensure the safe operation of the system to avoid problems such as overload and short circuit.

[0079] The system requires complex intelligent control algorithms to dynamically adjust energy recovery and charging strategies. For example, energy management strategies based on driving condition recognition can significantly improve vehicle charging efficiency and battery life. Intelligent charging management systems can automatically adjust charging strategies based on vehicle status and user needs to optimize energy distribution and improve efficiency.

[0080] 3. Practical application: Integrate the system into new energy vehicles to realize commercial application.

[0081] 4. Maintenance and care: Develop a reasonable maintenance and care plan to extend the service life of the system.

[0082] In an optional embodiment of the present application, the second motor and second generator in the electric vehicle self-charging system are installed in the vehicle trunk or chassis, forming an independent static charging module. This module operates independently when the vehicle is stationary and is not connected in parallel with the vehicle's drive system. When the vehicle is parked for an extended period, such as at night, the control circuit activates static charging mode, causing the second motor to drive the second generator, converting mechanical energy into electrical energy. This energy is then transferred to the vehicle's battery through the control circuit for charging, thereby enabling the vehicle to self-charge while stationary.

[0083] Both the first and second generators are equipped with intelligent monitoring units for real-time monitoring of their operating status, including key parameters such as speed, torque, and power generation efficiency. The intelligent monitoring units feed this data back to the control circuit, which dynamically adjusts the generator's operating parameters based on this data to optimize power generation efficiency. For example, if the generator's power generation efficiency is detected to have decreased due to load changes, the control circuit automatically adjusts the generator's speed or torque to restore it to optimal operating conditions, ensuring efficient charging throughout the entire process.

[0084] Furthermore, when the vehicle is briefly stopped or needs to maintain basic functions, such as when waiting at a traffic light or during a brief stop, the control circuit switches to low-power operation. During this time, the control circuit dynamically adjusts the output power of the second electric motor based on the remaining battery charge and the power requirements of the vehicle's auxiliary systems. If the battery charge is high, the output power of the second electric motor is appropriately reduced to reduce energy consumption; if the battery charge is low, the output power is increased to accelerate charging. In this way, the system can effectively charge the vehicle battery while ensuring the normal operation of the vehicle's auxiliary systems, further enhancing the system's flexibility and practicality.

[0085] Among the optional technical solutions of this application, the following is a solution for grouping and charging electric vehicle batteries:

[0086] 1. Overview of the program includes:

[0087] The battery pack of the electric vehicle is divided into three groups. Each group of batteries is boosted to the driving voltage through a boost device to drive the vehicle, or one group is set to the driving voltage to directly drive the vehicle without a boost device. During use:

[0088] 1. Use in steps: Use only one set of batteries at a time. When one set of batteries is exhausted, switch to another set.

[0089] 2. Charging strategy: During use, the battery pack in use is not charged, but the other two battery packs are charged to improve safety.

[0090] 2. The rationality and safety of the plan include:

[0091] 1. Security Improvement:

[0092] (1) Avoid potential safety hazards during charging: Do not charge the battery in use during use, which can effectively avoid problems such as overheating and overcharging during the charging process, thereby improving the battery life and safety.

[0093] (2) The role of the battery management system (BMS): The BMS monitors the battery status in real time, including voltage, current, temperature, etc., to ensure that the battery operates within a safe range.

[0094] 2. Battery life:

[0095] (1) Advantages of step-by-step use: Although the boost device itself does not increase the total energy of the battery, by using it in steps, the battery pack can be managed more flexibly and energy waste caused by battery pack imbalance can be avoided.

[0096] (2) Optimization of driving range: Although the theoretical total driving range is the same as that of direct series use, the driving range can be better optimized in actual use by properly managing the battery pack.

[0097] 3.Battery maintenance:

[0098] (1) Avoid over-discharge: Using batteries in steps can prevent over-discharge of a group of batteries, thereby extending battery life.

[0099] (2) Balanced charging: During the charging process, each battery pack can be charged and balanced individually to ensure the health of the battery pack.

[0100] 3. Solution optimization includes:

[0101] 1. Introduction of Battery Management System (BMS):

[0102] (1) Real-time monitoring: BMS is introduced to monitor and manage each battery group in real time to ensure that the battery operates within a safe range.

[0103] (2) Balancing management: BMS can achieve balanced management of batteries and reduce inconsistencies between battery packs.

[0104] 2. Charging strategy optimization:

[0105] (1) Step charging: During the operation of the vehicle, the battery pack in use is not charged, but the other two battery packs are charged.

[0106] (2) Slow charging mode: Use slow charging mode to charge the battery to avoid heat accumulation and capacity decay caused by fast charging.

[0107] (3) Intelligent charging: Intelligently adjust the charging current and voltage according to the battery's health status and remaining power to ensure the safety and efficiency of the charging process.

[0108] 3. Temperature control:

[0109] (1) Ambient temperature: Ensure that the battery operates within the appropriate temperature range to avoid the impact of high or low temperatures on battery performance.

[0110] (2) Cooling system: The battery pack is equipped with a cooling system, such as a fan or liquid cooling device, to ensure that the battery temperature is stable when running at high load.

[0111] 4. Regular maintenance:

[0112] (1) Parking charging: After parking, the vehicle can be charged as a whole by connecting the series line group in the berth to save charging time.

[0113] (2) Single battery maintenance: Regularly check the health status of individual batteries, including parameters such as voltage and internal resistance, promptly repair and recharge individual batteries that are short of power, and replace or maintain batteries with degraded performance.

[0114] 4. Additional details include:

[0115] 1. Hardware configuration:

[0116] (1) Boosting device: Select an efficient and stable boosting device to ensure the energy conversion efficiency during the boosting process.

[0117] (2) BMS system: Choose a BMS system with high-precision monitoring and balancing management functions.

[0118] (3) Cooling system: Select a suitable cooling system based on the power of the battery pack and the usage environment.

[0119] 2. Software configuration:

[0120] (1) Intelligent charging algorithm: Develop or purchase an intelligent charging algorithm that automatically adjusts charging parameters based on battery status.

[0121] (2) Monitoring system: Real-time monitoring of battery status via mobile phone APP or vehicle-mounted system, allowing users to understand battery health status at any time.

[0122] 3. User Operation Guide:

[0123] (1) Operation Manual: Provide users with a detailed operation manual that explains how to switch battery packs, how to charge, etc.

[0124] (2) Training: Provide simple training to users to ensure that they can correctly operate and maintain the battery system.

[0125] Through the above improvements and supplements, the user experience and maintenance efficiency of electric vehicles can be effectively improved.

[0126] This solution offers advantages in safety, battery maintenance, and battery life. By introducing a BMS, optimizing charging strategies, and implementing regular maintenance, the solution can be further refined to enhance the efficiency and safety of electric vehicles. Furthermore, through appropriate battery management and charging strategies, battery life can be further optimized and extended in practice.

[0127] In summary, this system, through both energy recovery and charging energy recovery modes, enables efficient energy recovery and charging while the vehicle is in motion or stationary, further improving the energy efficiency and range of electric vehicles, while reducing charging costs and infrastructure dependence. In terms of the market, self-charging systems can meet user demands for efficient and convenient charging and have broad application prospects.

[0128] In an optional embodiment of the present application, Figure 2 Also included is a self-charging method for an electric vehicle.

[0129] Specifically:

[0130] The method comprises the following steps:

[0131] During vehicle operation, the operating modes of the first and second motors are dynamically controlled to switch according to the vehicle's operating status and working conditions:

[0132] When the vehicle is coasting, braking or decelerating, the first motor is controlled to switch to generator mode, so that the first generator converts the vehicle's kinetic energy into electrical energy and transmits it to the vehicle battery through the control circuit for charging;

[0133] When the vehicle is traveling at a constant speed, the second motor is controlled to switch to generator mode according to the remaining power of the vehicle and the power state of the on-board battery, so that the second generator uses the remaining power of the vehicle to generate electricity and charge the on-board battery.

[0134] When the vehicle is stationary, select one of the following charging modes based on the battery status and the vehicle's parking time:

[0135] Static power generation mode: The vehicle battery is controlled to power the second electric motor, which drives the second generator to operate, converting mechanical energy into electrical energy. The energy is then transmitted to the vehicle battery through the control circuit for charging. When the vehicle battery is nearly fully charged, the system switches to trickle charging mode to extend battery life.

[0136] Low-power operation mode: Based on the remaining power of the vehicle battery and the power requirements of the vehicle auxiliary system, the output power of the second electric motor is controlled so that the electric energy generated by the second generator can both maintain the operation of the vehicle auxiliary system and charge the vehicle battery.

[0137] The voltage, current and temperature of the vehicle battery are monitored in real time through the control circuit to ensure the safety and stability of the charging process.

[0138] In an optional embodiment, the method further comprises:

[0139] During vehicle operation, the intelligent monitoring unit monitors the operating status of the first generator and the second generator in real time, including speed, torque and power generation efficiency;

[0140] Dynamically adjust the operating parameters of the first generator and the second generator based on the monitoring data to optimize power generation efficiency;

[0141] In the vehicle's static power generation mode, the speed and output power of the second electric motor are automatically adjusted according to the charge state of the on-board battery and the parking time of the vehicle to achieve optimal charging efficiency and battery life optimization.

[0142] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0143] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. An electric vehicle self-charging system, characterized in that: The system comprises: A first electric motor is installed in the vehicle drive system and is used to drive the vehicle; a second electric motor connected in parallel with the first electric motor and configured to provide power in a set mode to drive the generator to generate electrical energy; a first generator electrically connected to the first electric motor and capable of switching to a generator mode when the vehicle is coasting, braking or decelerating to convert the vehicle's kinetic energy into electrical energy; a second generator electrically connected to the second motor, for being driven by the second motor to operate in a static power generation mode or a low power operation mode to convert mechanical energy into electrical energy; an on-board battery, electrically connected to the first motor, the second motor, the first generator and the second generator, serving as an energy storage unit for storing electrical energy generated by the first generator and the second generator and providing power for the first motor and the second motor; The control circuit is electrically connected to the first motor, the second motor, the first generator, the second generator and the vehicle battery, and is used to dynamically control the operating mode switching of the first motor and the second motor according to the vehicle's operating status and working conditions, adjust the power generation process of the first generator and the second generator, and manage the transmission, distribution and storage of electric energy.

2. The electric vehicle self-charging system according to claim 1, characterized in that: The first motor and the second motor are connected in parallel via a power management system, wherein the power management system is configured to dynamically allocate an operating mode of the second motor according to the remaining power of the vehicle and the battery charge when the first motor drives the vehicle, so as to switch the second motor to a generator mode when necessary, thereby achieving parallel power generation; The control circuit includes an energy recovery control unit, which automatically triggers the first electric motor to switch to generator mode when the vehicle is coasting, braking or decelerating, controls the power generation power of the first generator to ensure that the recovered electric energy is smoothly transmitted to the vehicle battery and prevent overcharging.

3. The electric vehicle self-charging system according to claim 1, characterized in that: Both the first generator and the second generator are equipped with an intelligent monitoring unit, which is used to monitor the operating status of the generator in real time, including speed, torque and power generation efficiency, and feed back the monitoring data to the control circuit. The control circuit dynamically adjusts the operating parameters of the generator according to the monitoring data to optimize the power generation efficiency.

4. The electric vehicle self-charging system according to claim 1, characterized in that: The control circuit also includes a parallel power generation control unit. When the vehicle is traveling at a constant speed, the parallel power generation control unit controls the second electric motor to switch to generator mode based on the vehicle's remaining power and battery charge, so that the second generator uses the vehicle's remaining power to generate electrical energy and charge the vehicle battery, further improving energy utilization efficiency.

5. The electric vehicle self-charging system according to claim 1, characterized in that: The static power generation mode includes a trickle charging function. When the second motor drives the second generator to perform static power generation, the control circuit automatically switches to the trickle charging mode according to the power state of the vehicle battery to extend battery life and optimize the charging process; The control circuit also includes a safety protection module, which is used to monitor the voltage, current and temperature of the vehicle-mounted battery in real time and automatically cut off the relevant circuit when an abnormal situation is detected.

6. The electric vehicle self-charging system according to claim 1, characterized in that: In the low-power operating mode, the control circuit dynamically adjusts the output power of the second motor according to the remaining power of the vehicle battery and the power demand of the vehicle auxiliary system to ensure that the electric energy generated by the high-efficiency generator can both maintain the operation of the vehicle auxiliary system and charge the vehicle battery.

7. The electric vehicle self-charging system according to claim 1, characterized in that: The second electric motor and the second generator are installed in the trunk or chassis of the vehicle to form an independent static charging module, which operates independently when the vehicle is stationary and is not connected in parallel with the vehicle's drive system; Both the first generator and the second generator are equipped with an intelligent monitoring unit, which is used to monitor the operating status of the generator in real time, including speed, torque and power generation efficiency, and feed back the monitoring data to the control circuit. The control circuit dynamically adjusts the operating parameters of the generator according to the monitoring data to optimize the power generation efficiency.

8. The electric vehicle self-charging system according to claim 7, characterized in that: The control circuit also includes a low-power operation control unit. When the vehicle is briefly parked or needs to maintain basic functions, the low-power operation control unit dynamically adjusts the output power of the second electric motor based on the remaining power of the vehicle battery and the power requirements of the vehicle auxiliary system to ensure that the electric energy generated by the high-efficiency generator can both maintain the operation of the vehicle auxiliary system and charge the vehicle battery.

9. A self-charging method for an electric vehicle, implemented in the self-charging system for an electric vehicle according to any one of claims 1 to 8, characterized in that: The method comprises: During vehicle operation, the operating modes of the first and second motors are dynamically controlled to switch according to the vehicle's operating state and operating conditions. When the vehicle is coasting, braking, or decelerating, the first motor is controlled to switch to generator mode, causing the first generator to convert the vehicle's kinetic energy into electrical energy, which is then transmitted to the vehicle's battery for charging via a control circuit. When the vehicle is traveling at a constant speed, the second motor is controlled to switch to generator mode according to the vehicle's remaining power and the charge state of the vehicle's battery, causing the second generator to utilize the vehicle's remaining power to generate electrical energy and charge the vehicle's battery. When the vehicle is stationary, the static power generation mode or low power operation mode is selected according to the battery status and the parking time of the vehicle; The voltage, current and temperature of the vehicle battery are monitored in real time through the control circuit to ensure the safety and stability of the charging process.

10. The electric vehicle self-charging method according to claim 9, characterized in that: The method further comprises: During vehicle operation, the intelligent monitoring unit monitors the operating status of the first generator and the second generator in real time, including speed, torque and power generation efficiency; dynamically adjusting operating parameters of the first generator and the second generator based on the monitoring data to optimize power generation efficiency; In the vehicle's static power generation mode, the speed and output power of the second electric motor are automatically adjusted according to the charge state of the on-board battery and the parking time of the vehicle to achieve optimal charging efficiency and battery life optimization.

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