A method and system for improving power supply during continuous hill climbing in range-extended electric vehicles

Abstract

This invention discloses a method and system for improving the continuous uphill power depletion of range-extended electric vehicles (REEVs), relating to the field of automotive powertrain optimization technology. The method includes: acquiring real-time data on factors affecting the uphill operation of the electric vehicle, including vehicle-specific factors and external environmental factors; evaluating the driving state of the electric vehicle during uphill climbing based on the acquired data to determine whether the current driving state meets the uphill requirements; and generating a corresponding optimization strategy based on the determination result. The proposed method for improving the continuous uphill power depletion of REEVs ensures that the electric vehicle can continuously provide sufficient power to meet the uphill requirements through real-time monitoring and adjustment. By adjusting the optimization strategy, it reduces the energy consumption of non-critical systems and adjusts the intensity of the energy recovery system, effectively extending battery life, reducing the occurrence of power depletion problems, and lowering the safety risks caused by insufficient power.

Description

Technical Field

[0001] This invention relates to the field of automotive powertrain optimization technology, specifically to a method and system for improving the continuous uphill power supply of range-extended electric vehicles. Background Technology

[0002] As a type of new energy vehicle, range-extended electric vehicles have attracted much attention due to their low-carbon, environmentally friendly, energy-saving, and high-efficiency characteristics. However, in actual use, especially under complex conditions such as continuous uphill climbing, the problem of battery depletion in range-extended electric vehicles has become one of the key factors restricting their performance. During continuous uphill climbing, electric vehicles need to overcome the component of gravity along the slope, and are also affected by various resistances such as air resistance and friction between the tires and the ground. These resistances consume a lot of electrical energy, causing the battery charge to drop rapidly. When the battery charge is insufficient, the uphill climbing performance of the electric vehicle will drop significantly, and it may even be unable to continue climbing.

[0003] Furthermore, the state of the power system of a range-extended electric vehicle (REEV) also affects its hill-climbing performance. For example, factors such as motor performance, battery performance, and transmission system efficiency directly affect the amount of power the electric vehicle can provide. If these factors are not properly optimized and adjusted, the electric vehicle may experience insufficient power during hill climbing. Currently, some solutions have been proposed to address the problem of continuous power depletion during hill climbing in REEVs. However, these methods often only optimize a specific factor without comprehensively considering the combined impact of multiple factors on hill-climbing performance. Therefore, in practical applications, the effectiveness of these methods is often limited and cannot fundamentally solve the power depletion problem of REEVs during continuous hill climbing. To address this, we propose a method to improve the continuous power depletion problem during hill climbing in REEVs. Summary of the Invention

[0004] To address the aforementioned technical problems, a method and system for improving the continuous hill-climbing power supply of range-extended electric vehicles are provided. This technical solution solves the problems mentioned above.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A method for improving the continuous uphill power supply of range-extended electric vehicles includes:

[0007] Acquire real-time data on factors affecting electric vehicle hill climbing, including vehicle-specific factors and external environmental factors;

[0008] The driving status of the electric vehicle climbing the hill is evaluated based on the acquired factor data to determine whether the current driving status of the electric vehicle meets the hill climbing requirements.

[0009] Based on the judgment results, a corresponding optimization strategy is generated to adjust the engine output power and power system status of the electric vehicle;

[0010] After adjustments, the driving status of electric vehicles will be continuously monitored, and the driving status of electric vehicles will be reassessed.

[0011] Preferably, acquiring real-time data on factors affecting electric vehicle hill climbing specifically includes:

[0012] Vehicle-specific data includes motor performance data, battery performance data, vehicle weight data, and transmission system data;

[0013] Motor performance data includes power, torque, and motor efficiency; battery performance data includes battery capacity and battery discharge characteristics; and transmission system data includes transmission ratio and reducer efficiency.

[0014] External environmental factors data include: slope angle data, road surface condition data, and climate condition data;

[0015] Road surface condition data includes road surface smoothness and road surface friction, while climate condition data includes temperature and wind speed.

[0016] Preferably, the method for obtaining real-time data on factors affecting electric vehicle hill climbing is as follows:

[0017] The motor's real-time output power and torque values ​​are obtained by reading data from the motor controller using onboard sensors.

[0018] Motor efficiency is calculated by using a power sensor to monitor the input and output power of the motor. The formula for calculating motor efficiency is as follows:

[0019]

[0020] In the formula, Indicates motor efficiency. Indicates output power. Indicates input power;

[0021] The remaining battery capacity is calculated by integrating the battery discharge current. The formula for calculating the remaining battery capacity is as follows:

[0022]

[0023] In the formula, Indicates the remaining battery capacity. Indicates the initial battery capacity. t represents the real-time discharge current, and t represents time.

[0024] Battery discharge characteristics are obtained by monitoring changes in battery voltage, and the formula for calculating battery discharge characteristics is as follows:

[0025]

[0026] In the formula, R represents the internal resistance of the battery. This represents the voltage difference of the battery before and after the load change, and I represents the discharge current.

[0027] The weight of the vehicle is measured directly by a weighing sensor installed on the vehicle chassis.

[0028] The transmission ratio is calculated by measuring the ratio of the motor speed to the wheel speed. The formula for calculating the transmission ratio is as follows:

[0029]

[0030] In the formula, Indicates the motor speed. Indicates wheel speed;

[0031] Efficiency is calculated by measuring the input and output power of the reducer. The formula for calculating reducer efficiency is as follows:

[0032]

[0033] In the formula, Indicates the efficiency of the speed reducer. Indicates the output power of the reducer. Indicates the input power of the reducer;

[0034] The slope angle is determined by measuring the angle between the vehicle and the horizontal plane using a tilt sensor.

[0035] An accelerometer is installed on the vehicle chassis to monitor the vibration of the vehicle during driving and to determine the smoothness of the road surface.

[0036] A friction coefficient sensor is installed near the wheel to measure the friction coefficient between the tire and the road surface.

[0037] Use temperature sensors to monitor ambient temperature and the temperature of vehicle components;

[0038] Use the wind speed sensor on the vehicle to obtain the wind speed information at the current location.

[0039] Preferably, the evaluation of the driving status of an electric vehicle climbing a hill based on the acquired factor data specifically includes:

[0040] Based on the acquired data on vehicle-specific factors and external environmental factors, the data is categorized, organized, and preprocessed.

[0041] The main evaluation indicators are determined as motor output torque, remaining battery power, the component of vehicle weight along the slope, tire-ground friction, and air resistance calculated from wind speed.

[0042] Calculate the component of the vehicle's weight along the slope based on the slope angle and vehicle weight:

[0043]

[0044] In the formula, Let m represent the component of the vehicle's weight along the slope, and g represent the acceleration due to gravity. Indicates the slope angle;

[0045] The formula for calculating air resistance based on wind speed is:

[0046]

[0047] in, Indicates the air resistance value. The value represents the air drag coefficient, and A represents the vehicle's frontal area. represents air density, and v represents vehicle speed;

[0048] Calculate the total power required for climbing the hill:

[0049]

[0050] In the formula, This represents the total power required to climb the hill. This indicates the total number of resistance factors. This represents the i-th resistance factor. This represents the resistance value of the i-th resistance factor;

[0051] The actual power that an electric vehicle can provide is determined by the output torque of the motor and the efficiency of the transmission system. Considering the transmission ratio and efficiency of the transmission system, the actual power provided is calculated as follows:

[0052]

[0053] In the formula, Indicates the actual power provided. This indicates the torque output from the motor to the wheels. represents the transmission ratio, and r represents the wheel radius.

[0054] Preferably, determining whether the current driving status of the electric vehicle meets the hill-climbing requirements specifically includes:

[0055] Based on the calculated actual power provided and the total power required for climbing, the actual power provided... Total power required for climbing Comparison:

[0056] like If the current driving state of the electric vehicle meets the hill-climbing requirements, no adjustments will be made.

[0057] like If the current driving state of the electric vehicle does not meet the requirements for hill climbing, an optimization strategy needs to be generated.

[0058] Preferably, generating an optimization strategy to adjust the engine output power and powertrain status of the electric vehicle specifically includes:

[0059] By comparing the calculated power required for climbing with the actual power provided, the main factors causing insufficient power can be identified.

[0060] Calculate the power output required by the engine based on the current power demand and battery status;

[0061] The engine output power is adjusted by the electronic control unit of the engine control system;

[0062] If the motor torque is insufficient at the current speed, adjust the transmission ratio of the transmission system to amplify the motor output torque at the wheels. Adjust the transmission ratio according to the motor torque characteristic curve and the climbing requirements.

[0063] If the battery charge is low, measures such as reducing the energy consumption of non-critical systems and adjusting the intensity of the energy recovery system can be taken to extend the battery's lifespan.

[0064] Check tire pressure to ensure it is within the manufacturer's recommended range for increased grip.

[0065] Preferably, the formula for calculating engine output power is:

[0066]

[0067] In the formula, Indicates engine output power. Indicates the efficiency of the transmission system. This indicates the motor efficiency.

[0068] Preferably, the formula for calculating the adjusted transmission ratio is:

[0069]

[0070] In the formula, This indicates the adjusted transmission ratio. Indicates motor torque. This indicates the transmission ratio before adjustment.

[0071] Preferably, reducing the energy consumption of non-critical systems specifically includes:

[0072] Reduce the power of the vehicle's air conditioning system and adjust the operating frequency of the air conditioning compressor according to the ambient temperature and the set temperature inside the vehicle.

[0073] Reduce the volume output of the vehicle's entertainment system or pause some unnecessary background applications;

[0074] Reducing the brightness of the vehicle's lighting system includes: keeping the automatic headlights at a lower brightness or turning off some auxiliary lights when there is sufficient light.

[0075] Preferably, adjusting the intensity of the energy recovery system specifically includes:

[0076] When the battery charge is low and the vehicle speed is high, increase the energy recovery intensity so that the vehicle can recover more electrical energy during deceleration.

[0077] When a vehicle needs significant power to climb a hill and the battery charge is insufficient to support prolonged high-intensity energy recovery, reduce the energy recovery intensity to avoid affecting the vehicle's climbing performance.

[0078] The energy recovery intensity is dynamically adjusted in real time based on the slope angle and vehicle driving status to balance battery charge retention and vehicle power demand.

[0079] Preferably, checking tire pressure and ensuring it is within the manufacturer's recommended range to increase grip specifically includes:

[0080] If the tire pressure is lower than the manufacturer's recommended range, inflate it promptly to ensure the tire's contact area and friction with the ground.

[0081] Regularly clean debris from the tire treads to prevent it from affecting the friction between the tire and the ground;

[0082] When road conditions permit, reduce vehicle speed to decrease tire wear and increase grip.

[0083] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0084] The proposed method for improving the continuous uphill power depletion of range-extended electric vehicles (REEVs) ensures that the electric vehicle can continuously provide sufficient power to meet the uphill climbing requirements through real-time monitoring and adjustment. By adjusting the optimization strategy, the energy consumption of non-critical systems is reduced and the intensity of the energy recovery system is adjusted, effectively extending the battery life and reducing the occurrence of power depletion problems. Through precise assessment and dynamic adjustment of the electric vehicle's driving status, the safety risks caused by insufficient power are reduced, and driving safety is improved. The method can intelligently adjust according to actual road conditions and vehicle status, providing drivers with a more comfortable and convenient driving experience. Attached Figure Description

[0085] Figure 1 Flowchart of a method to improve the continuous hill-climbing power supply for range-extended electric vehicles. Detailed Implementation

[0086] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0087] Reference Figure 1 As shown, a method for improving the continuous uphill power supply of a range-extended electric vehicle includes:

[0088] Through advanced sensor technology and data acquisition systems, we can comprehensively acquire real-time data on various factors that affect electric vehicles' hill climbing. These factors are mainly divided into two aspects: one is vehicle-related factors, including the vehicle's current charge level, battery performance status, motor power, vehicle weight, and transmission system efficiency; the other is external environmental factors, covering the gradient of the hill climbing section, road surface conditions, air resistance, and temperature.

[0089] Based on the rich and detailed factor data obtained, the algorithm is used to conduct an in-depth evaluation of the driving status of the electric vehicle climbing the hill. In the evaluation process, the vehicle's own power performance and the influence of the external environment on the vehicle's driving are comprehensively considered to determine whether the current driving status of the electric vehicle can meet the needs of climbing the hill. The current output power of the vehicle is compared with the power required for climbing the hill, and the battery power is analyzed to determine whether the vehicle can support the vehicle to continue climbing the hill.

[0090] Based on the above judgment results, corresponding optimization strategies are generated. If the judgment results show that the vehicle's driving status cannot meet the climbing requirements, then it is necessary to adjust the engine output power of the electric vehicle to increase the engine's power output and increase the vehicle's power. At the same time, the power system status is adjusted, the motor's working mode is optimized, and the battery's discharge strategy is adjusted to ensure that the vehicle has sufficient power during the climbing process.

[0091] After adjustments, the driving status of the electric vehicle is continuously monitored. Sensors and data acquisition systems are used again to obtain real-time data on the vehicle, including vehicle speed, battery charge changes, and engine operating status. Based on this data, the driving status of the electric vehicle is reassessed to ensure the effectiveness of the optimization strategy and to provide a basis for further adjustments. If the adjusted driving status is still found to be insufficient for climbing, the strategy is optimized until the vehicle can climb the hill smoothly.

[0092] Obtaining real-time data on factors affecting electric vehicle hill climbing specifically includes:

[0093] I. Vehicle-specific data

[0094] Vehicle-specific data covers multiple aspects and has a significant impact on the hill-climbing performance of electric vehicles.

[0095] Motor performance data:

[0096] Power: The motor's power determines its output force. A high-power motor provides stronger driving force when climbing hills, ensuring the vehicle can overcome gravity and resistance to climb smoothly. Real-time power data acquisition helps the system accurately assess the motor's current power output capability.

[0097] Torque: Torque is the force that causes an object to rotate. Sufficient torque is crucial for electric vehicles climbing hills, providing strong traction during vehicle start-up and low-speed driving. Real-time torque monitoring reveals the vehicle's instantaneous acceleration and ability to overcome resistance during hill climbs.

[0098] Motor efficiency: Motor efficiency reflects a motor's ability to convert electrical energy into mechanical energy. High-efficiency motors can output more power with the same electrical input, improving a vehicle's hill-climbing performance. Meanwhile, motor efficiency is affected by temperature and load; real-time acquisition of motor efficiency data can help the system optimize motor operation and improve energy utilization efficiency.

[0099] Battery performance data:

[0100] Battery capacity: Battery capacity determines the total amount of electrical energy stored in an electric vehicle. When climbing hills, the vehicle consumes a significant amount of electrical energy to drive the motor, and the battery capacity directly affects the vehicle's range and climbing ability. Real-time battery capacity data helps the system assess the vehicle's energy reserves during hill climbing, allowing for timely adjustments to the power output strategy.

[0101] Battery discharge characteristics: Battery discharge characteristics include discharge curves and discharge rate. Different discharge characteristics affect the battery's output voltage and current under different loads, thus affecting the motor's power output. Real-time monitoring of battery discharge characteristics can help the system optimize battery usage, improve discharge efficiency, and extend battery life.

[0102] Vehicle weight data:

[0103] Vehicle weight is a significant factor affecting hill-climbing performance. Heavier vehicles require more power to climb hills and also consume more electrical energy. Real-time vehicle weight data helps the system accurately assess the vehicle's power demands during hill climbs, allowing for adjustments to engine output and powertrain status.

[0104] Transmission system data:

[0105] Gear ratio: The gear ratio is the ratio of the input shaft speed to the output shaft speed. A proper gear ratio allows the motor to perform optimally under different vehicle speeds and loads. When climbing hills, a larger gear ratio provides greater torque output, helping the vehicle overcome gravity and resistance. Real-time acquisition of gear ratio data helps the system adjust the transmission system according to the current driving conditions, improving climbing performance.

[0106] Gear reducer efficiency: The gear reducer is a crucial component of the transmission system, and its efficiency directly affects the motor's output power and the vehicle's climbing performance. A high-efficiency gear reducer reduces energy loss and increases motor output power. Real-time acquisition of gear reducer efficiency data helps the system assess the transmission system's operating status, enabling timely maintenance and adjustments.

[0107] II. External Environmental Factors Data

[0108] External environmental factors have a significant impact on the hill-climbing performance of electric vehicles.

[0109] Slope angle data:

[0110] The gradient angle is one of the direct factors affecting the hill-climbing performance of electric vehicles. A larger gradient angle means that the vehicle needs to overcome a greater component of gravity, thus requiring greater power output. Real-time acquisition of gradient angle data helps the system accurately assess the power demand of the vehicle when climbing hills, so as to adjust the engine output power and powertrain status.

[0111] Road surface condition data:

[0112] Road surface smoothness: Road surface smoothness affects vehicle stability and power transmission efficiency. Uneven road surfaces increase vehicle vibration and drag, reducing climbing performance. Real-time acquisition of road surface smoothness data helps the system adjust the vehicle's suspension system and power output strategy, improving driving stability and climbing performance.

[0113] Road surface friction: Road surface friction is crucial for vehicle operation, directly affecting traction and braking performance. Sufficient road surface friction prevents slippage when climbing hills, improving climbing performance. Real-time acquisition of road surface friction data helps the system adjust vehicle power output and braking strategies, enhancing driving safety and hill-climbing performance.

[0114] Climate condition data:

[0115] Temperature: Temperature affects battery performance and motor efficiency. At high temperatures, battery capacity decreases, motor efficiency drops, and vehicle climbing performance suffers. At low temperatures, battery discharge capacity weakens, and motor starting performance is affected. Real-time temperature data acquisition helps the system adjust battery usage and motor operating parameters, improving climbing performance.

[0116] Wind speed: Wind speed affects a vehicle's air resistance, which in turn affects power output and energy consumption. When driving against the wind, a vehicle needs to overcome greater air resistance, thus requiring greater power output. Real-time wind speed data can help the system adjust the vehicle's power output strategy, improving climbing performance and energy efficiency.

[0117] The method for obtaining real-time data on factors affecting electric vehicle hill climbing is as follows:

[0118] Data from the motor controller is read by onboard sensors to obtain the motor's real-time output power and torque values. These motor output power and torque values ​​are crucial for assessing the vehicle's power delivery capability during hill climbing.

[0119] A power sensor is used to monitor the input and output power of the motor, and the motor efficiency is calculated. Motor efficiency reflects the motor's ability to convert electrical energy into mechanical energy and has a significant impact on the vehicle's climbing performance. The formula for calculating motor efficiency is:

[0120]

[0121] In the formula, Indicates motor efficiency. Indicates output power. Indicates input power;

[0122] The remaining battery capacity is calculated by integrating the battery discharge current. Battery capacity determines the total amount of electrical energy an electric vehicle can store. During hill climbing, the remaining battery capacity directly affects the vehicle's range and climbing ability. The formula for calculating the remaining battery capacity is as follows:

[0123]

[0124] In the formula, Indicates the remaining battery capacity. Indicates the initial battery capacity. t represents the real-time discharge current, and t represents time.

[0125] Battery discharge characteristics are obtained by monitoring changes in battery voltage. These characteristics include the discharge curve and discharge rate. Different discharge characteristics affect the battery's output voltage and current under different loads, thus affecting the motor's power output. The formula for calculating battery discharge characteristics is as follows:

[0126]

[0127] In the formula, R represents the internal resistance of the battery. This represents the voltage difference of the battery before and after the load change, and I represents the discharge current.

[0128] The weight of a vehicle is measured directly by a weighing sensor installed on the vehicle chassis. Vehicle weight is one of the important factors affecting climbing performance. Heavier vehicles require more power to climb hills and also consume more electrical energy.

[0129] The transmission ratio is calculated by measuring the ratio of the motor speed to the wheel speed. The transmission ratio is the ratio of the input shaft speed to the output shaft speed. A reasonable transmission ratio allows the motor to perform optimally under different vehicle speeds and loads. During hill climbing, a larger transmission ratio provides greater torque output, helping the vehicle overcome gravity and resistance. The formula for calculating the transmission ratio is as follows:

[0130]

[0131] In the formula, Indicates the motor speed. Indicates wheel speed;

[0132] Efficiency is calculated by measuring the input and output power of the reducer. The reducer is a crucial component of the transmission system, and its efficiency directly affects the motor's output power and the vehicle's climbing performance. A high-efficiency reducer can reduce energy loss and increase the motor's output power. The formula for calculating reducer efficiency is as follows:

[0133]

[0134] In the formula, Indicates the efficiency of the speed reducer. Indicates the output power of the reducer. Indicates the input power of the reducer;

[0135] The slope angle is determined by measuring the angle between the vehicle and the horizontal plane using tilt sensors. The slope angle is one of the most direct factors affecting the hill-climbing performance of electric vehicles; a larger slope angle means that the vehicle needs to overcome a larger component of gravity, thus requiring greater power output.

[0136] Accelerometers are installed on the vehicle chassis to monitor vibrations during driving, thereby determining road surface smoothness. Road surface smoothness affects vehicle stability and power transmission efficiency; uneven surfaces increase vehicle vibration and drag, reducing the vehicle's climbing performance.

[0137] A friction coefficient sensor is installed near the wheels to measure the coefficient of friction between the tires and the road surface. Road surface friction is crucial for vehicle operation, directly affecting traction and braking performance. During hill climbing, sufficient road surface friction ensures the vehicle doesn't slip, improving its climbing performance.

[0138] Temperature sensors are used to monitor ambient temperature and the temperature of vehicle components. Temperature affects battery performance and motor efficiency. In high-temperature environments, battery capacity decreases and motor efficiency also reduces, thus affecting the vehicle's hill-climbing performance. In low-temperature environments, battery discharge capacity weakens, and motor starting performance is also affected.

[0139] The vehicle uses its wind speed sensor to obtain wind speed information at the current location. Wind speed affects the vehicle's air resistance, which in turn affects the vehicle's power output and energy consumption. When driving against the wind, the vehicle needs to overcome greater air resistance, thus requiring greater power output.

[0140] The process of using this invention is as follows: acquire climbing factor data, evaluate the climbing driving status based on the factor data, determine whether the climbing requirements are met, generate an optimization strategy based on the judgment result, adjust the engine output power and power system status, and continuously monitor and re-evaluate the driving status.

[0141] In summary, the advantages of this invention are: by real-time monitoring and adjustment, it ensures sufficient power for climbing and meets the needs; by optimizing strategies, it extends battery life and reduces power depletion; by accurately assessing and dynamically adjusting, it reduces safety risks and improves safety; and by intelligently adapting to road conditions and vehicle status, it enhances the driving experience.

[0142] In another embodiment of this application, a system for improving the continuous hill-climbing power supply of a range-extended electric vehicle is provided, including a data acquisition module, an evaluation module, an adjustment module, and a re-evaluation module;

[0143] The data acquisition module is used to acquire real-time data on factors affecting the climbing ability of electric vehicles. These factors include vehicle-specific factors and external environmental factors.

[0144] The evaluation module assesses the driving status of the electric vehicle climbing the hill based on the acquired factor data, and determines whether the current driving status of the electric vehicle meets the hill climbing requirements.

[0145] The adjustment module generates corresponding optimization strategies based on the judgment results, and adjusts the engine output power and power system status of the electric vehicle.

[0146] The reassessment module continuously monitors the driving status of the electric vehicle after adjustments and reassesses the driving status. Based on the reassessment results, it cyclically judges whether the current driving status of the electric vehicle meets the climbing requirements.

[0147] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A method for improving the continuous hill-climbing power supply of a range-extended electric vehicle, characterized in that, include: Acquire real-time data on factors affecting electric vehicle hill climbing, including vehicle-specific factors and external environmental factors; The driving status of the electric vehicle climbing the hill is evaluated based on the acquired factor data to determine whether the current driving status of the electric vehicle meets the hill climbing requirements. Based on the judgment results, a corresponding optimization strategy is generated to adjust the engine output power and power system status of the electric vehicle; After adjustment, the driving status of the electric vehicle is continuously monitored and reassessed. Based on the reassessment results, the current driving status of the electric vehicle is cyclically judged to determine whether it meets the climbing requirements. The specific factors that influence the real-time uphill climbing ability of electric vehicles include: Vehicle-specific data includes motor performance data, battery performance data, vehicle weight data, and transmission system data; Motor performance data includes power, torque, and motor efficiency; battery performance data includes battery capacity and battery discharge characteristics; and transmission system data includes transmission ratio and reducer efficiency. External environmental factors data include: slope angle data, road surface condition data, and climate condition data; Road condition data includes road surface smoothness and road surface friction, while climate condition data includes temperature and wind speed. Generating optimization strategies to adjust the engine output power and powertrain status of electric vehicles specifically includes: By comparing the calculated power required for climbing with the actual power provided, the main factors causing insufficient power can be identified. Calculate the power output required by the engine based on the current power demand and battery status; The engine output power is adjusted by the electronic control unit of the engine control system; If the motor torque is insufficient at the current speed, adjust the transmission ratio of the transmission system to amplify the motor output torque at the wheels. Adjust the transmission ratio according to the motor torque characteristic curve and the climbing requirements. If the battery charge is low, measures such as reducing the energy consumption of non-critical systems and adjusting the intensity of the energy recovery system can be taken to extend the battery's lifespan. Check tire pressure to ensure it is within the manufacturer's recommended range for increased grip; Reducing energy consumption in non-critical systems specifically includes: Reduce the power of the vehicle's air conditioning system and adjust the operating frequency of the air conditioning compressor according to the ambient temperature and the set temperature inside the vehicle. Reduce the volume output of the vehicle's entertainment system or pause some unnecessary background applications; Reduce the brightness of the vehicle lighting system, which includes: keeping the automatic headlights at a low brightness or turning off some auxiliary lights when there is sufficient light. Adjusting the intensity of the energy recovery system specifically includes: When the battery charge is low and the vehicle speed is high, increase the energy recovery intensity so that the vehicle can recover more electrical energy during deceleration. When a vehicle needs significant power to climb a hill and the battery charge is insufficient to support prolonged high-intensity energy recovery, reduce the energy recovery intensity to avoid affecting the vehicle's climbing performance. The energy recovery intensity is dynamically adjusted in real time based on the slope angle and vehicle driving status to balance battery charge retention and vehicle power demand.

2. The method for improving the continuous hill-climbing power supply of a range-extended electric vehicle according to claim 1, characterized in that, The method for obtaining real-time data on factors affecting electric vehicle hill climbing is as follows: The motor's real-time output power and torque values ​​are obtained by reading data from the motor controller using onboard sensors. Motor efficiency is calculated by using a power sensor to monitor the input and output power of the motor. The formula for calculating motor efficiency is as follows: In the formula, Indicates motor efficiency. Indicates output power. Indicates input power; The remaining battery capacity is calculated by integrating the battery discharge current. The formula for calculating the remaining battery capacity is as follows: In the formula, Indicates the remaining battery capacity. Indicates the initial battery capacity. t represents the real-time discharge current, and t represents time. Battery discharge characteristics are obtained by monitoring changes in battery voltage, and the formula for calculating battery discharge characteristics is as follows: In the formula, R represents the internal resistance of the battery. This represents the voltage difference of the battery before and after the load change, and I represents the discharge current. The weight of the vehicle is measured directly by a weighing sensor installed on the vehicle chassis. The transmission ratio is calculated by measuring the ratio of the motor speed to the wheel speed. The formula for calculating the transmission ratio is as follows: In the formula, Indicates the motor speed. Indicates wheel speed; Efficiency is calculated by measuring the input and output power of the reducer. The formula for calculating reducer efficiency is as follows: In the formula, Indicates the efficiency of the speed reducer. Indicates the output power of the reducer. Indicates the input power of the reducer; The slope angle is determined by measuring the angle between the vehicle and the horizontal plane using a tilt sensor. An accelerometer is installed on the vehicle chassis to monitor the vibration of the vehicle during driving and to determine the smoothness of the road surface. A friction coefficient sensor is installed near the wheel to measure the friction coefficient between the tire and the road surface. Use temperature sensors to monitor ambient temperature and the temperature of vehicle components; Use the wind speed sensor on the vehicle to obtain the wind speed information at the current location.

3. The method for improving the continuous hill-climbing power supply of a range-extended electric vehicle according to claim 1, characterized in that, The assessment of the driving status of an electric vehicle climbing a hill based on the acquired factor data specifically includes: Based on the acquired data on vehicle-specific factors and external environmental factors, the data is categorized, organized, and preprocessed. The main evaluation indicators are determined as motor output torque, remaining battery power, the component of vehicle weight along the slope, tire-ground friction, and air resistance calculated from wind speed. Calculate the component of the vehicle's weight along the slope based on the slope angle and vehicle weight: In the formula, Let m represent the component of the vehicle's weight along the slope, and g represent the acceleration due to gravity. Indicates the slope angle; The formula for calculating air resistance based on wind speed is: in, Indicates the air resistance value. The value represents the air drag coefficient, and A represents the vehicle's frontal area. represents air density, and v represents vehicle speed; Calculate the total power required for climbing the hill: In the formula, This represents the total power required to climb the hill. This indicates the total number of resistance factors. This represents the i-th resistance factor. This represents the resistance value of the i-th resistance factor; The actual power that an electric vehicle can provide is determined by the output torque of the motor and the efficiency of the transmission system. Considering the transmission ratio and efficiency of the transmission system, the actual power provided is calculated as follows: In the formula, Indicates the actual power provided. This indicates the torque output from the motor to the wheels. represents the transmission ratio, and r represents the wheel radius.

4. The method for improving the continuous hill-climbing power supply of a range-extended electric vehicle according to claim 1, characterized in that, Determining whether the current driving status of an electric vehicle meets the requirements for hill climbing specifically includes: Based on the calculated actual power provided and the total power required for climbing, the actual power provided... Total power required for climbing Comparison: like If the current driving state of the electric vehicle meets the hill-climbing requirements, no adjustments will be made. like If the current driving state of the electric vehicle does not meet the requirements for hill climbing, an optimization strategy needs to be generated.

5. The method for improving the continuous hill-climbing power supply of a range-extended electric vehicle according to claim 1, characterized in that, The formula for calculating engine output power is: In the formula, Indicates engine output power. Indicates the efficiency of the transmission system. This indicates the motor efficiency.

6. The method for improving the continuous hill-climbing power supply of a range-extended electric vehicle according to claim 1, characterized in that, The formula for calculating the adjusted transmission ratio is: In the formula, This indicates the adjusted transmission ratio. Indicates motor torque. This indicates the transmission ratio before adjustment.

7. The method for improving the continuous hill-climbing power supply of a range-extended electric vehicle according to claim 1, characterized in that, Check tire pressure and ensure it is within the manufacturer's recommended range to increase grip. This includes: If the tire pressure is lower than the manufacturer's recommended range, inflate it promptly to ensure the tire's contact area and friction with the ground. Regularly clean debris from the tire treads to prevent it from affecting the friction between the tire and the ground; When road conditions permit, reduce vehicle speed to decrease tire wear and increase grip.

8. A system for improving the continuous hill-climbing power supply of a range-extended electric vehicle, characterized in that, It includes a data acquisition module, an evaluation module, an adjustment module, and a re-evaluation module; The data acquisition module is used to acquire real-time data on factors affecting the climbing ability of electric vehicles. These factors include vehicle-specific factors and external environmental factors. The evaluation module assesses the driving status of the electric vehicle climbing the hill based on the acquired factor data, and determines whether the current driving status of the electric vehicle meets the hill climbing requirements. The adjustment module generates corresponding optimization strategies based on the judgment results, and adjusts the engine output power and power system status of the electric vehicle. The reassessment module continuously monitors the driving status of the electric vehicle after adjustment and reassesses the driving status of the electric vehicle. Based on the reassessment results, it cyclically judges whether the current driving status of the electric vehicle meets the climbing requirements. The specific factors that influence the real-time uphill climbing ability of electric vehicles include: Vehicle-specific data includes motor performance data, battery performance data, vehicle weight data, and transmission system data; Motor performance data includes power, torque, and motor efficiency; battery performance data includes battery capacity and battery discharge characteristics; and transmission system data includes transmission ratio and reducer efficiency. External environmental factors data include: slope angle data, road surface condition data, and climate condition data; Road condition data includes road surface smoothness and road surface friction, while climate condition data includes temperature and wind speed. Generating optimization strategies to adjust the engine output power and powertrain status of electric vehicles specifically includes: By comparing the calculated power required for climbing with the actual power provided, the main factors causing insufficient power can be identified. Calculate the power output required by the engine based on the current power demand and battery status; The engine output power is adjusted by the electronic control unit of the engine control system; If the motor torque is insufficient at the current speed, adjust the transmission ratio of the transmission system to amplify the motor output torque at the wheels. Adjust the transmission ratio according to the motor torque characteristic curve and the climbing requirements. If the battery charge is low, measures such as reducing the energy consumption of non-critical systems and adjusting the intensity of the energy recovery system can be taken to extend the battery's lifespan. Check tire pressure to ensure it is within the manufacturer's recommended range for increased grip; Reducing energy consumption in non-critical systems specifically includes: Reduce the power of the vehicle's air conditioning system and adjust the operating frequency of the air conditioning compressor according to the ambient temperature and the set temperature inside the vehicle. Reduce the volume output of the vehicle's entertainment system or pause some unnecessary background applications; Reduce the brightness of the vehicle lighting system, which includes: keeping the automatic headlights at a low brightness or turning off some auxiliary lights when there is sufficient light. Adjusting the intensity of the energy recovery system specifically includes: When the battery charge is low and the vehicle speed is high, increase the energy recovery intensity so that the vehicle can recover more electrical energy during deceleration. When a vehicle needs significant power to climb a hill and the battery charge is insufficient to support prolonged high-intensity energy recovery, reduce the energy recovery intensity to avoid affecting the vehicle's climbing performance. The energy recovery intensity is dynamically adjusted in real time based on the slope angle and vehicle driving status to balance battery charge retention and vehicle power demand.

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