Range extender power control method and device for extended-range vehicle and extended-range vehicle

Abstract

The invention provides a range extender power control method and device of a range extending type vehicle and the range extending type vehicle, and the method comprises the steps that the whole vehicle operation working condition of the range extending type vehicle is obtained, whether the whole vehicle operation working condition accords with all first preset working conditions or not is determined, and all the first preset working conditions are parameter value ranges of the whole vehicle operation working conditions in different specific scenes; and under the condition that the whole vehicle operation working condition accords with any first preset working condition, the power of a range extender of the range-extended vehicle is removed, and the rotating speed of the range extender is kept unchanged in the removing and filtering process. According to the method, the problems that in the prior art, the power of the range extender is rapidly cleared and recovered in a specific scene, so that the rotating speed fluctuation is too large in a short time, and the NVH performance is reduced are solved.

Description

Technical Field

[0001] This invention relates to the field of range extender control technology, and more specifically, to a range extender power control method, apparatus, computer-readable storage medium, and range extender vehicle. Background Technology

[0002] In existing range-extended vehicles, the range extender (composed of an engine and a generator) functions to generate electricity by burning fuel when the battery charge is low or the vehicle needs more power, charging the battery or directly supplying power to the drive motor. However, during vehicle operation, certain special conditions require the range extender's power to be cleared and restored within a short period. Traditional power clearing methods involve clearing the engine and generator's speed and torque, keeping the engine at idle, and the range extender no longer generating electricity. This results in poor NVH performance for the entire vehicle during the clearing process. Summary of the Invention

[0003] The main objective of this application is to provide a method, apparatus, computer-readable storage medium, and range-extended vehicle for controlling the power of the range extender, so as to at least solve the problem in the prior art where the rapid clearing and recovery of the range extender power in a specific scenario leads to excessive speed fluctuations and decreased NVH performance in a short period of time.

[0004] To achieve the above objectives, according to one aspect of this application, a method for controlling the power of a range extender in a range-extended vehicle is provided, comprising: acquiring the overall vehicle operating conditions of the range extender and determining whether the overall vehicle operating conditions meet various first preset operating conditions, wherein each first preset operating condition is a range of parameter values ​​for the overall vehicle operating conditions under different specific scenarios; and, if the overall vehicle operating conditions meet any one of the first preset operating conditions, clearing the power of the range extender of the range extender while maintaining the speed of the range extender unchanged during the clearing and filtering process.

[0005] Optionally, after determining whether the vehicle operating conditions meet each of the first preset operating conditions, the method further includes: if the vehicle operating conditions do not meet each of the first preset operating conditions, determining the possibility of clearing the power of the range extender based on the vehicle operating conditions using a fuzzy algorithm; if the possibility is greater than or equal to a preset possibility, clearing the power of the range extender of the range-extended vehicle while maintaining the speed of the range extender unchanged during the clearing and filtering process.

[0006] Optionally, after determining the probability of clearing the power of the range extender using a fuzzy algorithm based on the vehicle operating conditions, the method further includes: if the probability is less than the preset probability, determining whether the vehicle operating conditions conform to each of the second preset conditions, wherein the second preset conditions correspond to specific scenarios different from the first preset conditions; if the vehicle operating conditions conform to any one of the second preset conditions, clearing the power of the range extender by clearing the speed and torque of the engine and electric motor.

[0007] Optionally, clearing the power of the range extender of the range-extended vehicle includes: reducing the torque of the range extender at a first preset slope until the torque of the range extender is 0, so that the output power of the range extender is 0; and during the torque adjustment of the range extender, distributing the available charging power of the battery pack to the drive motor.

[0008] Optionally, determining whether the vehicle operating conditions meet each of the first preset operating conditions includes: determining the drive motor speed, speed change rate, road slope, and gearbox shifting state based on the vehicle operating conditions; matching the drive motor speed, speed change rate, road slope, and gearbox shifting state with corresponding preset thresholds, wherein each preset threshold corresponds one-to-one with a first preset operating condition; and determining that the vehicle operating conditions meet the corresponding first preset operating conditions if all preset thresholds are matched successfully.

[0009] Optionally, determining the probability of clearing the range extender's power using a fuzzy algorithm based on the vehicle's operating conditions includes: determining the drive motor speed, speed change rate, road gradient, and gearbox shifting state based on the vehicle's operating conditions; mapping the motor speed to a first fuzzy set using a first membership function to obtain a first fuzzy parameter, wherein the first membership function is a triangular or trapezoidal membership function; mapping the speed change rate to a second fuzzy set using a second membership function to obtain a second fuzzy parameter, wherein the second membership function is a triangular or Gaussian membership function; mapping the road gradient to a third fuzzy set using a third membership function to obtain a third fuzzy parameter, wherein the third membership function is a Gaussian membership function; converting the gearbox shifting state into a fourth fuzzy parameter, and mapping the first, second, third, and fourth fuzzy parameters to a fourth fuzzy set using a fourth membership function to obtain the probability, wherein the fourth membership function is a triangular or trapezoidal membership function.

[0010] Optionally, after clearing the power of the range extender of the range-extended vehicle, the method further includes: monitoring the overall vehicle operating conditions of the range-extended vehicle in real time, and determining whether the overall vehicle operating conditions meet each of the first preset operating conditions; if the overall vehicle operating conditions do not meet each of the first preset operating conditions, increasing the torque of the range extender by a second preset slope until the power of the range extender equals the target power.

[0011] According to another aspect of this application, a range extender power control device for a range-extended vehicle is provided. The device includes: a first acquisition unit, configured to acquire the overall vehicle operating conditions of the range-extended vehicle and determine whether the overall vehicle operating conditions meet various first preset operating conditions, wherein each first preset operating condition is a parameter value range of the overall vehicle operating conditions under different specific scenarios; and a first control unit, configured to, when the overall vehicle operating conditions meet any one of the first preset operating conditions, clear the power of the range extender of the range-extended vehicle and maintain the speed of the range extender unchanged during the clearing and filtering process.

[0012] According to another aspect of this application, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device on which the computer-readable storage medium is located to perform any of the methods described.

[0013] According to another aspect of this application, a range-extended vehicle is provided, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including methods for performing any one of the methods described.

[0014] Applying the technical solution of this application, in the above-mentioned range extender power control method for range-extended vehicles, firstly, the overall vehicle operating conditions are acquired, and it is determined whether the overall vehicle operating conditions meet each first preset operating condition. Each first preset operating condition is a parameter value range of the overall vehicle operating conditions under different specific scenarios. Then, if the overall vehicle operating conditions meet any one of the first preset operating conditions, the power of the range extender of the range extender is cleared while maintaining the range extender speed unchanged during the clearing and filtering process. This application determines whether the vehicle's operating status meets preset scenarios such as gearbox shifting by monitoring the vehicle's operating status. If the scenario requirements are met, preset control logic is triggered, and the vehicle's output power is cleared without changing the range extender speed. Compared with the prior art, which clears the speed and torque of the engine and generator, this reduces the speed fluctuation during the power clearing process, thereby solving the problem in the prior art where the range extender power is quickly cleared and restored in specific scenarios, resulting in excessive speed fluctuations and decreased NVH performance in a short period of time. Attached Figure Description

[0015] Figure 1 A hardware block diagram of a mobile terminal for a range extender power control method for a range-extended vehicle provided in an embodiment of this application is shown.

[0016] Figure 2 A schematic flowchart of a range extender power control method for a range-extended vehicle according to an embodiment of this application is shown.

[0017] Figure 3 A flowchart illustrating a method for determining whether a vehicle's operating conditions meet the requirements for a special power-saving operation, according to an embodiment of this application, is shown.

[0018] Figure 4 A flowchart illustrating the calculation of the possibility of a vehicle operating condition conforming to a special power-saving operation according to an embodiment of this application is shown.

[0019] Figure 5 A schematic flowchart of a specific range extender power control method for a range-extended vehicle according to another embodiment of this application is shown.

[0020] Figure 6 A structural block diagram of a range extender power control device for a range-extended vehicle provided according to an embodiment of this application is shown. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0023] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0024] For ease of description, the following explains some of the nouns or terms used in the embodiments of this application:

[0025] Range extender: It consists of an engine and a generator. It burns fuel to drive the generator to generate electricity, which charges the battery of the electric vehicle or directly powers the drive motor.

[0026] NVH: refers to Noise, Vibration, and Harshness, used to comprehensively evaluate the comfort and performance of a vehicle.

[0027] As described in the background section, in the prior art, during vehicle operation, under certain special conditions, it is necessary to quickly clear and restore the power of the range extender. The traditional power clearing method involves clearing the speed and torque of the engine and generator to keep the engine idling and the range extender no longer generating electricity. This results in poor NVH performance of the entire vehicle during the clearing process. To solve the problem of excessive speed fluctuation and decreased NVH performance caused by quickly clearing and restoring the range extender power in specific scenarios in the prior art, embodiments of this application provide a range extender power control method, device, computer-readable storage medium, and range extender vehicle.

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0029] The methods and embodiments provided in this application can be executed on a mobile terminal, computer terminal, or similar computing device. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for a range extender power control method for a range-extended vehicle according to an embodiment of the present invention. Figure 1 As shown, a mobile terminal may include one or more ( Figure 1Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0030] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the range extender power control method for range-extended vehicles in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or send data via a network. Specific examples of the aforementioned networks may include wireless networks provided by the mobile terminal's communication provider. In one example, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0031] This embodiment provides a range extender power control method for a range-extended vehicle that runs on a mobile terminal, computer terminal, or similar computing device. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Also, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0032] Figure 2 This is a flowchart of a range extender power control method for a range-extended vehicle according to an embodiment of this application. Figure 2 As shown, the method includes the following steps:

[0033] Step S201: Obtain the vehicle operating conditions of the range-extended vehicle and determine whether the vehicle operating conditions meet the first preset conditions. Each first preset condition is the parameter value range of the vehicle operating conditions under different specific scenarios.

[0034] It is understandable that range-extended vehicles have different operating requirements and strategies under different working conditions. By monitoring the vehicle's operating status in real time, such as drive motor speed, speed change rate, road gradient, and gearbox shifting status, it is possible to identify whether the vehicle is in a working condition that requires special handling.

[0035] In practice, by collecting the above parameters, it is determined whether the range-extended vehicle is in a preset specific scenario, and whether to invoke the specific power clearing operation in this application.

[0036] Step S202: When the vehicle's operating conditions meet any of the first preset operating conditions, the power of the range extender in the range-extended vehicle is cleared while maintaining the range extender speed unchanged during the clearing and filtering process.

[0037] Understandably, special operating conditions (such as emergency braking, gear shifting, etc.) require the release of a large amount of energy to the drive motor for energy recovery in a short period of time, while avoiding drastic changes in engine speed, reducing NVH problems, and improving the driving experience.

[0038] In practice, during the power clearing process, the target speed and target power settings of the range extender are not changed to avoid speed fluctuations affecting NVH. In turn, the target torque of the range extender is quickly reduced. Since the above operation reduces the power of the range extender by clearing only the torque, rather than clearing the speed and torque at the same time, the power is cleared to 0 and then restored to the original power in a short time. This avoids the range extender speed from dropping and rising in a short time, which would reduce NVH performance and affect driver comfort.

[0039] In this embodiment, firstly, the overall operating conditions of the range-extended vehicle are acquired, and it is determined whether the overall operating conditions meet various first preset conditions. Each first preset condition is a parameter value range for the overall operating conditions of the vehicle under different specific scenarios. Then, if the overall operating conditions meet any of the first preset conditions, the power of the range extender of the range-extended vehicle is cleared while maintaining the speed of the range extender unchanged during the clearing and filtering process. This application determines whether the vehicle's operating status meets preset scenarios such as gearbox shifting by monitoring the vehicle's operating status. If the scenario requirements are met, preset control logic is triggered to clear the vehicle's output power without changing the speed of the range extender. Compared with the prior art, which clears the speed and torque of the engine and generator, this reduces the speed fluctuation during the power clearing process, thus solving the problem in the prior art where the range extender power is quickly cleared and restored in specific scenarios, resulting in excessive speed fluctuations and decreased NVH performance in a short period of time.

[0040] To ensure the accuracy of the torque clearing operation, in one optional implementation, after determining whether the vehicle's operating conditions meet the first preset operating conditions, the above method further includes:

[0041] Step S301: If the vehicle's operating conditions do not meet the first preset operating conditions, determine the possibility of clearing the range extender's power based on the vehicle's operating conditions using a fuzzy algorithm.

[0042] Understandably, fuzzy algorithms can handle the uncertainty of input information by transforming continuous and fuzzy data into actionable decisions, making them suitable for situations that cannot be strictly quantified or are easily affected by environmental factors. By evaluating the combined impact of multiple factors, fuzzy algorithms can more accurately predict the necessity of clearing range extender power.

[0043] In practice, when the preset first operating condition threshold (such as drive motor overspeed, rapid acceleration, rapid deceleration, etc.) is not reached, the system uses a fuzzy algorithm to assess whether it is still necessary to clear the power of the range extender. Specifically, the above parameters are mapped to the possibility of clearing power using a fuzzy mapping method.

[0044] Step S302: If the probability is greater than or equal to the preset probability, remove the power of the range extender of the range-extended vehicle and maintain the range extender speed unchanged during the removal and filtering process.

[0045] Under normal operating conditions, if the probability of clearing the range extender power calculated by the fuzzy algorithm exceeds the preset value, it means that the vehicle operating state corresponding to the current vehicle operating condition needs to perform a power clearing operation.

[0046] In practice, when the fuzzy algorithm determines that a power clearing operation is required, the range extender speed is kept constant to avoid NVH problems caused by speed fluctuations. At the same time, the generator torque of the range extender is quickly cleared to achieve zero power output, ensuring rapid energy allocation without affecting the stability of the vehicle.

[0047] Through the above embodiments, by introducing fuzzy algorithms, it is possible to determine whether to clear the power of the range extender in more scenarios that are more suitable for the above special power clearing method. Based on the threshold judgment, the accuracy of the judgment is further improved, thereby improving the NVH performance through the above special power clearing method.

[0048] To ensure the accuracy of the torque clearing operation, in one optional implementation, after determining the probability of clearing the range extender's power using a fuzzy algorithm based on the vehicle's operating conditions, the method further includes:

[0049] Step S401: If the probability is less than the preset probability, determine whether the vehicle operating conditions meet the second preset conditions. The second preset conditions correspond to specific scenarios that are different from the first preset conditions.

[0050] Understandably, the fuzzy algorithm calculates the probability of clearing the range extender's power by comprehensively analyzing vehicle operating parameters such as drive motor speed, speed change rate, road gradient, and transmission shifting status. If this probability is lower than a preset value, it means that special power management of the range extender is not required under the current operating conditions. Furthermore, this application also sets whether the current vehicle operating conditions meet the requirements for normal power clearing operation, i.e., the aforementioned second preset operating condition.

[0051] Step S402: When the vehicle's operating conditions meet any of the second preset conditions, the power of the range extender is cleared by clearing the speed and torque of the engine and electric motor.

[0052] Understandably, when the vehicle's operating conditions do not meet the first preset condition for triggering special power clearing, and the fuzzy algorithm also determines that it does not meet the first preset condition for triggering special power clearing, but meets the second preset condition for normal power clearing, the traditional control strategy is adopted to clear the power by simultaneously clearing the speed and torque of the engine and electric motor.

[0053] Through the above embodiments, by combining fuzzy algorithm evaluation and detection of the second preset operating condition, this application can manage the power output of the range extender more precisely. It can not only respond quickly under special operating conditions to avoid NVH deterioration, but also adjust in a timely manner according to the actual needs of the vehicle under normal operating conditions to maintain a smooth transition of engine speed and torque.

[0054] To prevent overcurrent damage to components, in one optional implementation, step S202 includes:

[0055] Step S2021: Reduce the torque of the range extender with a first preset slope until the torque of the range extender is 0, so that the output power of the range extender is 0;

[0056] Understandably, in range-extended electric vehicles, the power output of the range extender is determined by both its torque and speed. In specific scenarios, to avoid fluctuations in NVH performance and ensure the efficient and smooth operation of the powertrain, the control system rapidly reduces the torque of the range extender at a preset, relatively large slope until the torque drops to zero, thus mitigating changes in speed and reducing NVH variations.

[0057] In step S2022, during the torque adjustment process of the range extender, the available charging power of the battery pack is allocated to the drive motor.

[0058] Understandably, when the range extender stops generating electricity, the available charging power of the battery pack is released. This power can be redistributed to the drive motor to enhance energy recovery and improve the braking performance of the range-extended vehicle.

[0059] Through the above embodiments, by stopping power generation and efficiently redistributing the available charging power of the battery pack to the drive motor, the vehicle's safety and braking performance in emergency situations are improved. At the same time, by adjusting only the torque to regulate the output power, the driver's driving experience is guaranteed.

[0060] To verify whether the current operating condition meets the special operating condition, in one optional implementation, such as Figure 3 As shown, step S201 above includes:

[0061] Step S2011: Determine the drive motor speed, speed change rate, road gradient, and gearbox shifting status based on the vehicle's operating conditions;

[0062] Understandably, the operating strategy of range-extended electric vehicles relies on multiple real-time monitoring parameters, including but not limited to the aforementioned drive motor speed, speed change rate, current road gradient, and gear shift status.

[0063] In practice, the above-mentioned vehicle operating conditions are obtained by collecting data from various sensors, such as motor speed sensors, accelerometers (used to measure the rate of change of speed), GPS and terrain databases (used to estimate road slope), and gearbox position sensors.

[0064] Step S2012: Match the drive motor speed, speed change rate, road slope and gearbox shifting status with the corresponding preset thresholds respectively. The preset thresholds correspond one-to-one with the first preset working condition.

[0065] In one specific embodiment, the above-mentioned preset threshold can be set as follows: drive motor speed > 10000 rpm, drive motor speed change rate > 300 rpm / s, road slope < -5°, and gearbox shifting status is shifting. In different first preset working conditions, the above-mentioned preset threshold can take different parameters.

[0066] Step S2013: If all preset thresholds are matched and passed, determine that the vehicle's operating conditions meet the corresponding first preset conditions.

[0067] It is understandable that when all the key parameters monitored by the vehicle reach or exceed the preset threshold at the same time, it indicates that the vehicle is in a working condition that requires special handling, that is, the above-mentioned journey operation condition is determined to be in accordance with the corresponding first preset working condition.

[0068] Through the above embodiments, by monitoring key vehicle operating parameters in real time and matching them with preset thresholds, it is possible to accurately identify whether the vehicle is in a first preset operating condition requiring emergency handling. This dynamic monitoring and immediate response mechanism not only ensures the safety and stability of the vehicle under special operating conditions but also effectively optimizes energy management and NVH performance, improving the driving experience.

[0069] To further determine whether the current operating condition meets the special operating condition, in one optional implementation, such as Figure 4 As shown, step S301 above includes:

[0070] Step S3011: Determine the drive motor speed, speed change rate, road gradient, and gearbox shifting status based on the vehicle's operating conditions;

[0071] Step S3012: The motor speed is mapped to the first fuzzy set using the first membership function to obtain the first fuzzy parameter. The first membership function is a triangular membership function or a trapezoidal membership function.

[0072] In practical implementation, the drive motor speed (RPM) is set, with fuzzy set: {high, too high, overspeed}, universe of discourse range: 8000 ~ 14000 rpm (example value, needs to be adjusted according to actual conditions), and membership function: trapezoidal or triangular (e.g., high = 8000~10500, too high = 10500~12000, overspeed = 12000~14000).

[0073] Step S3013: The rotational speed change rate is mapped to the second fuzzy set using the second membership function to obtain the second fuzzy parameter. The second membership function is a triangular membership function or a Gaussian membership function.

[0074] In practical implementation, the rotational speed change rate (ΔRPM) is set, the fuzzy set is {deceleration, stability, acceleration}, the universe of discourse range is -1000 ~ +1000 rpm / s, and the membership function is Gaussian or triangular (e.g., deceleration = -1000~0, stability = -200~200, acceleration = 0~1000).

[0075] Step S3014: The road slope is mapped to the third fuzzy set using the third membership function to obtain the third fuzzy parameter. The third membership function is a Gaussian shape membership function.

[0076] In practical implementation, the road slope is set, the fuzzy set is {downhill, flat road, uphill}, the universe of discourse range is -10% ~ +10% (slope percentage), and the membership function is trapezoidal (e.g., downhill = -10% ~ -2%, flat road = -5% ~ 5%, uphill = 2% ~ 10%).

[0077] Step S3015: Convert the gearbox shift state into the fourth fuzzy parameter, and use the fourth membership function to map the first fuzzy parameter, the second fuzzy parameter, the third fuzzy parameter and the fourth fuzzy parameter to the fourth fuzzy set to obtain the possibility. The fourth membership function is a triangular membership function or a trapezoidal membership function.

[0078] In practical implementation, the gearbox shift state is defined by a fuzzy set: {shifting in progress, shifting complete}, with a universe of discourse of Boolean values ​​or discrete states (0 = shifting complete, 1 = shifting in progress). Probability is defined by a fuzzy set: {none, low, medium, high, certain}, with a universe of discourse range of 0% to 100%, and a membership function of a triangle or trapezoid (e.g., none = 0~15%, low = 10%~40%, medium = 30%~70%, high = 60%~90%, certain = 85%~100%). When the probability of a special clearing power is high / certain, the special clearing power is determined.

[0079] Through the above embodiments, the possibility of clearing the range extender's power is intelligently determined based on the vehicle's actual operating conditions (including motor speed, speed change rate, road gradient, and transmission status). The introduction of fuzzy logic makes the decision-making process more closely reflect the complexity and uncertainty of real-world driving scenarios, enabling more precise and user-friendly adjustments to the range extender's operating state to optimize vehicle performance and enhance driving safety and comfort.

[0080] To ensure the vehicle's power supply, in one optional implementation, after clearing the power from the range extender of the range-extended vehicle, the method further includes:

[0081] Step S501: Monitor the overall vehicle operating conditions of the range-extended vehicle in real time and determine whether the overall vehicle operating conditions meet the first preset conditions.

[0082] Understandably, the vehicle continuously collects operating data through various sensors (such as speed sensors, acceleration sensors, battery SOC sensors, etc.), compares the collected data with the threshold of the first preset operating condition, and determines whether the vehicle has exited the special operating state.

[0083] In step S502, if the vehicle's operating conditions do not meet the first preset conditions, the torque of the range extender is increased by a second preset slope until the power of the range extender equals the target power.

[0084] Understandably, a relatively gentle torque increase slope (second preset slope) is set as the adjustment speed of the power recovery process to avoid sudden changes in the range extender torque that could lead to NVH problems. Then, based on the vehicle's needs, such as battery charging rate, drive motor operating status, or vehicle load, the target power of the range extender is set to guide the torque increase to an appropriate level.

[0085] To enable those skilled in the art to better understand the technical solution of this application, the implementation process of the range extender power control method for range-extended vehicles of this application will be described in detail below with reference to specific embodiments.

[0086] This embodiment relates to a specific method for controlling the power of a range extender in a range-extended vehicle, such as... Figure 5 As shown, it includes the following steps:

[0087] Step S1: Monitor the overall vehicle operating status (including but not limited to drive motor speed, speed change rate, road gradient, and gearbox shifting status), and determine whether to perform special power clearing operation based on the overall vehicle operating status;

[0088] Step S2: During the special power clearing operation, maintain the target power and target speed set by the range extender unchanged to avoid the impact of speed fluctuations on the vehicle's NVH during the power clearing process;

[0089] Step S3: Then, the above-mentioned special power clearing operation is achieved by quickly clearing the torque of the range extender at a preset slope;

[0090] Step S4: After the power clearing is completed, determine whether to maintain the above-mentioned special power clearing state based on the overall vehicle operating status;

[0091] Step S5: Without maintaining the above-mentioned special power clearing state, restore the torque of the range extender and proceed to the next round of monitoring.

[0092] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0093] This application also provides a range extender power control device for a range-extended vehicle. It should be noted that the range extender power control device of this application can be used to execute the range extender power control method for range-extended vehicles provided in this application. This device is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0094] The following describes the range extender power control device for range-extended vehicles provided in the embodiments of this application.

[0095] Figure 6This is a structural block diagram of a range extender power control device for a range-extended vehicle according to an embodiment of this application. Figure 6 As shown, the device includes:

[0096] The first acquisition unit 10 is used to acquire the vehicle operating conditions of the range-extended vehicle and determine whether the vehicle operating conditions meet the first preset conditions. The first preset conditions are the parameter value ranges of the vehicle operating conditions under different specific scenarios.

[0097] The first control unit 20 is used to remove the power of the range extender of the range-extended vehicle and maintain the speed of the range extender unchanged during the removal and filtration process when the vehicle operation conditions meet any of the first preset conditions.

[0098] In this embodiment, the first acquisition unit acquires the overall vehicle operating conditions of the range-extended vehicle and determines whether the overall vehicle operating conditions meet various first preset operating conditions. Each first preset operating condition is a parameter value range of the overall vehicle operating conditions under different specific scenarios. When the overall vehicle operating conditions meet any of the first preset operating conditions, the first control unit clears the power of the range extender of the range-extended vehicle and maintains the speed of the range extender unchanged during the clearing and filtering process. This application determines whether the vehicle's operating status meets preset scenarios such as gearbox shifting by monitoring the vehicle's operating status. When the scenario requirements are met, preset control logic is triggered to clear the vehicle's output power without changing the speed of the range extender. Compared with the prior art, which clears the speed and torque of the engine and generator, this reduces the speed fluctuation during the power clearing process, thereby solving the problem in the prior art where the range extender power is quickly cleared and restored in specific scenarios, resulting in excessive speed fluctuations and decreased NVH performance in a short period of time.

[0099] To ensure the accuracy of the torque clearing operation, in one optional embodiment, the above-mentioned device further includes:

[0100] The first determining unit is used to determine the possibility of clearing the range extender's power based on the vehicle's operating conditions, after determining whether the vehicle's operating conditions meet each of the first preset operating conditions, if the vehicle's operating conditions do not meet each of the first preset operating conditions.

[0101] The second control unit is used to remove the power of the range extender of the range-extended vehicle when the probability is greater than or equal to a preset probability, and to maintain the range extender speed constant during the filtration process.

[0102] To ensure the accuracy of the torque clearing operation, in one optional embodiment, the above-mentioned device further includes:

[0103] The second determining unit is used to determine whether the vehicle operating conditions meet the second preset conditions after determining the possibility of clearing the range extender's power through a fuzzy algorithm based on the vehicle's operating conditions, if the possibility is less than the preset possibility. The second preset conditions correspond to specific scenarios that are different from the first preset conditions.

[0104] The third control unit is used to clear the power of the range extender by clearing the speed and torque of the engine and electric motor when the vehicle's operating conditions do not meet the second preset conditions.

[0105] To prevent overcurrent damage to components, in one optional embodiment, the first control unit includes:

[0106] The first control module is used to reduce the torque of the range extender by a first preset slope until the torque of the range extender is 0, so that the output power of the range extender is 0.

[0107] The second control module is used to distribute the available charging power of the battery pack to the drive motor during the torque adjustment process of the range extender.

[0108] To verify whether the current operating condition meets the special operating condition, in one optional implementation, the first acquisition unit includes:

[0109] The first determining module is used to determine the drive motor speed, speed change rate, road gradient, and gearbox shifting status based on the vehicle's operating conditions.

[0110] The comparison module is used to match the drive motor speed, speed change rate, road slope and gearbox shift state with the corresponding preset thresholds, and the preset thresholds correspond one-to-one with the first preset working condition.

[0111] The second determining module is used to determine that the vehicle's operating conditions meet the corresponding first preset conditions when all preset thresholds are matched and passed.

[0112] To further determine whether the current operating condition meets the special operating condition, in one optional implementation, the first determining unit includes:

[0113] The third determining module is used to determine the drive motor speed, speed change rate, road gradient, and gearbox shifting status based on the vehicle's operating conditions.

[0114] The first processing module is used to map the motor speed to the first fuzzy set using a first membership function to obtain the first fuzzy parameter. The first membership function is a triangular membership function or a trapezoidal membership function.

[0115] The second processing module is used to map the rotational speed change rate to the second fuzzy set using the second membership function to obtain the second fuzzy parameter. The second membership function is a triangular membership function or a Gaussian membership function.

[0116] The third processing module is used to map the road slope to the third fuzzy set using the third membership function to obtain the third fuzzy parameter. The third membership function is a Gaussian shape membership function.

[0117] The fourth processing module is used to convert the gearbox shift state into a fourth fuzzy parameter. The first fuzzy parameter, the second fuzzy parameter, the third fuzzy parameter and the fourth fuzzy parameter are mapped to the fourth fuzzy set using the fourth membership function to obtain the possibility. The fourth membership function is a triangular membership function or a trapezoidal membership function.

[0118] To ensure the vehicle's power supply, in one optional embodiment, the above-mentioned device further includes:

[0119] The second acquisition unit is used to monitor the overall vehicle operating condition of the range-extended vehicle in real time after clearing the power of the range extender of the range-extended vehicle, and to determine whether the overall vehicle operating condition meets each of the first preset operating conditions.

[0120] The fourth control unit is used to increase the torque of the range extender at a second preset slope when the vehicle's operating conditions do not meet the first preset conditions, until the power of the range extender equals the target power.

[0121] The range extender power control device of the aforementioned range-extended vehicle includes a processor and a memory. The first acquisition unit and the first control unit, etc., are all stored as program units in the memory, and the processor executes the program units stored in the memory to achieve the corresponding functions. All of the above modules are located in the same processor; or, the above modules are located in different processors in any combination.

[0122] The processor contains a core, which retrieves the corresponding program unit from memory. One or more cores can be configured, and adjusting core parameters can reduce NVH performance changes during power clearing.

[0123] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0124] This invention provides a computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the range extender power control method for the range-extended vehicle.

[0125] Specifically, the power control method for the range extender of a range-extended vehicle includes:

[0126] Step S201: Obtain the vehicle operating conditions of the range-extended vehicle and determine whether the vehicle operating conditions meet the first preset conditions. Each first preset condition is the parameter value range of the vehicle operating conditions under different specific scenarios.

[0127] It is understandable that range-extended vehicles have different operating requirements and strategies under different working conditions. By monitoring the vehicle's operating status in real time, such as drive motor speed, speed change rate, road gradient, and gearbox shifting status, it is possible to identify whether the vehicle is in a working condition that requires special handling.

[0128] In practice, by collecting the above parameters, it is determined whether the range-extended vehicle is in a preset specific scenario, and whether to invoke the specific power clearing operation in this application.

[0129] Step S202: When the vehicle's operating conditions meet any of the first preset operating conditions, the power of the range extender in the range-extended vehicle is cleared while maintaining the range extender speed unchanged during the clearing and filtering process.

[0130] Understandably, special operating conditions (such as emergency braking, gear shifting, etc.) require the release of a large amount of energy to the drive motor for energy recovery in a short period of time, while avoiding drastic changes in engine speed, reducing NVH problems, and improving the driving experience.

[0131] In practice, during the power clearing process, the target speed and target power settings of the range extender are not changed to avoid speed fluctuations affecting NVH. In turn, the target torque of the range extender is quickly reduced. Since the above operation reduces the power of the range extender by clearing only the torque, rather than clearing the speed and torque at the same time, the power is cleared to 0 and then restored to the original power in a short time. This avoids the range extender speed from dropping and rising in a short time, which would reduce NVH performance and affect driver comfort.

[0132] This invention provides a processor for running a program, wherein the program executes the range extender power control method for the range-extended vehicle.

[0133] Specifically, the power control method for the range extender of a range-extended vehicle includes:

[0134] Step S201: Obtain the vehicle operating conditions of the range-extended vehicle and determine whether the vehicle operating conditions meet the first preset conditions. Each first preset condition is the parameter value range of the vehicle operating conditions under different specific scenarios.

[0135] It is understandable that range-extended vehicles have different operating requirements and strategies under different working conditions. By monitoring the vehicle's operating status in real time, such as drive motor speed, speed change rate, road gradient, and gearbox shifting status, it is possible to identify whether the vehicle is in a working condition that requires special handling.

[0136] In practice, by collecting the above parameters, it is determined whether the range-extended vehicle is in a preset specific scenario, and whether to invoke the specific power clearing operation in this application.

[0137] Step S202: When the vehicle's operating conditions meet any of the first preset operating conditions, the power of the range extender in the range-extended vehicle is cleared while maintaining the range extender speed unchanged during the clearing and filtering process.

[0138] Understandably, special operating conditions (such as emergency braking, gear shifting, etc.) require the release of a large amount of energy to the drive motor for energy recovery in a short period of time, while avoiding drastic changes in engine speed, reducing NVH problems, and improving the driving experience.

[0139] In practice, during the power clearing process, the target speed and target power settings of the range extender are not changed to avoid speed fluctuations affecting NVH. In turn, the target torque of the range extender is quickly reduced. Since the above operation reduces the power of the range extender by clearing only the torque, rather than clearing the speed and torque at the same time, the power is cleared to 0 and then restored to the original power in a short time. This avoids the range extender speed from dropping and rising in a short time, which would reduce NVH performance and affect driver comfort.

[0140] This invention provides a range-extended vehicle, which includes a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs at least the following steps:

[0141] Step S201: Obtain the vehicle operating conditions of the range-extended vehicle and determine whether the vehicle operating conditions meet the first preset conditions. Each first preset condition is the parameter value range of the vehicle operating conditions under different specific scenarios.

[0142] It is understandable that range-extended vehicles have different operating requirements and strategies under different working conditions. By monitoring the vehicle's operating status in real time, such as drive motor speed, speed change rate, road gradient, and gearbox shifting status, it is possible to identify whether the vehicle is in a working condition that requires special handling.

[0143] In practice, by collecting the above parameters, it is determined whether the range-extended vehicle is in a preset specific scenario, and whether to invoke the specific power clearing operation in this application.

[0144] Step S202: When the vehicle's operating conditions meet any of the first preset operating conditions, the power of the range extender in the range-extended vehicle is cleared while maintaining the range extender speed unchanged during the clearing and filtering process.

[0145] Understandably, special operating conditions (such as emergency braking, gear shifting, etc.) require the release of a large amount of energy to the drive motor for energy recovery in a short period of time, while avoiding drastic changes in engine speed, reducing NVH problems, and improving the driving experience.

[0146] In practice, during the power clearing process, the target speed and target power settings of the range extender are not changed to avoid speed fluctuations affecting NVH. In turn, the target torque of the range extender is quickly reduced. Since the above operation reduces the power of the range extender by clearing only the torque, rather than clearing the speed and torque at the same time, the power is cleared to 0 and then restored to the original power in a short time. This avoids the range extender speed from dropping and rising in a short time, which would reduce NVH performance and affect driver comfort.

[0147] This application also provides a computer program product, which, when executed on a data processing device, is suitable for executing an initialization program having at least the following method steps:

[0148] Step S201: Obtain the vehicle operating conditions of the range-extended vehicle and determine whether the vehicle operating conditions meet the first preset conditions. Each first preset condition is the parameter value range of the vehicle operating conditions under different specific scenarios.

[0149] It is understandable that range-extended vehicles have different operating requirements and strategies under different working conditions. By monitoring the vehicle's operating status in real time, such as drive motor speed, speed change rate, road gradient, and gearbox shifting status, it is possible to identify whether the vehicle is in a working condition that requires special handling.

[0150] In practice, by collecting the above parameters, it is determined whether the range-extended vehicle is in a preset specific scenario, and whether to invoke the specific power clearing operation in this application.

[0151] Step S202: When the vehicle's operating conditions meet any of the first preset operating conditions, the power of the range extender in the range-extended vehicle is cleared while maintaining the range extender speed unchanged during the clearing and filtering process.

[0152] Understandably, special operating conditions (such as emergency braking, gear shifting, etc.) require the release of a large amount of energy to the drive motor for energy recovery in a short period of time, while avoiding drastic changes in engine speed, reducing NVH problems, and improving the driving experience.

[0153] In practice, during the power clearing process, the target speed and target power settings of the range extender are not changed to avoid speed fluctuations affecting NVH. In turn, the target torque of the range extender is quickly reduced. Since the above operation reduces the power of the range extender by clearing only the torque, rather than clearing the speed and torque at the same time, the power is cleared to 0 and then restored to the original power in a short time. This avoids the range extender speed from dropping and rising in a short time, which would reduce NVH performance and affect driver comfort.

[0154] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0155] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0156] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0157] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0158] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0159] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0160] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0161] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic tape, disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0162] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0163] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0164] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0165] 1) The range extender power control method for range-extended vehicles of this application firstly acquires the overall vehicle operating conditions and determines whether the overall vehicle operating conditions meet various first preset operating conditions, where each first preset operating condition is a parameter value range for the overall vehicle operating conditions under different specific scenarios; then, if the overall vehicle operating conditions meet any of the first preset operating conditions, the power of the range extender of the range extender is cleared while maintaining the range extender speed unchanged during the clearing and filtering process. This application determines whether the vehicle's operating status meets preset scenarios such as gearbox shifting by monitoring the vehicle's operating status. If the scenario requirements are met, preset control logic is triggered, and the vehicle's output power is cleared without changing the range extender speed. Compared with the prior art, which clears the speed and torque of the engine and generator, this method reduces speed fluctuations during the power clearing process, thus solving the problem in the prior art where the range extender power is quickly cleared and restored under specific scenarios, resulting in excessive speed fluctuations and decreased NVH performance in a short period of time.

[0166] 2) The range extender power control device for the range-extended vehicle of this application includes a first acquisition unit that acquires the overall vehicle operating conditions and determines whether the overall vehicle operating conditions meet various first preset operating conditions, where each first preset operating condition is a parameter value range for the overall vehicle operating conditions under different specific scenarios. When the overall vehicle operating conditions meet any of the first preset operating conditions, the first control unit clears the power of the range extender of the range-extended vehicle while maintaining the range extender speed unchanged during the clearing and filtering process. This application determines whether the vehicle's operating status meets preset scenarios such as gearbox shifting by monitoring the vehicle's operating status. If the scenario requirements are met, preset control logic is triggered, and the vehicle's output power is cleared without changing the range extender speed. Compared to the prior art, which clears the engine and generator speeds and torque, this reduces speed fluctuations during the power clearing process, thus solving the problem in the prior art where rapid clearing and recovery of the range extender power in specific scenarios leads to excessive speed fluctuations and decreased NVH performance in a short period.

[0167] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for controlling the power of a range extender in a range-extended vehicle, characterized in that, include: The vehicle operating conditions of the range-extended electric vehicle are obtained, and it is determined whether the vehicle operating conditions meet each first preset condition. Each first preset condition is the parameter value range of the vehicle operating conditions under different specific scenarios. When the vehicle's operating conditions meet any of the first preset conditions, the power of the range extender in the range-extended vehicle is removed while maintaining the range extender's rotational speed during the removal and filtration process.

2. The method according to claim 1, characterized in that, After determining whether the vehicle operating conditions meet the first preset operating conditions, the method further includes: If the vehicle operating conditions do not meet the first preset operating conditions, the possibility of clearing the range extender's power is determined by a fuzzy algorithm based on the vehicle operating conditions. If the probability is greater than or equal to the preset probability, the power of the range extender of the range-extended vehicle is removed while maintaining the speed of the range extender during the removal and filtration process.

3. The method according to claim 2, characterized in that, After determining the probability of clearing the range extender's power using a fuzzy algorithm based on the vehicle's operating conditions, the method further includes: If the probability is less than the preset probability, determine whether the vehicle operating condition meets each of the second preset conditions, where the second preset conditions correspond to specific scenarios that are different from the first preset conditions; When the vehicle operating conditions meet any of the second preset conditions, the power of the range extender is eliminated by clearing the speed and torque of the engine and electric motor.

4. The method according to claim 1, characterized in that, Removing the power from the range extender of the range-extended vehicle includes: The torque of the range extender is reduced by a first preset slope until the torque of the range extender is 0, so that the output power of the range extender is 0; During the torque adjustment process of the range extender, the available charging power of the battery pack is distributed to the drive motor.

5. The method according to claim 1, characterized in that, Determining whether the vehicle's operating conditions meet the respective first preset operating conditions includes: The drive motor speed, speed change rate, road gradient, and gearbox shifting status are determined based on the vehicle's operating conditions. The drive motor speed, speed change rate, road slope and gearbox shift state are matched with corresponding preset thresholds, and the preset thresholds correspond one-to-one with the first preset working condition. If all the preset thresholds are matched and passed, it is determined that the vehicle operating condition conforms to the corresponding first preset condition.

6. The method according to claim 2, characterized in that, Based on the vehicle's operating conditions, a fuzzy algorithm is used to determine the likelihood of clearing the range extender's power, including: The drive motor speed, speed change rate, road gradient, and gearbox shifting status are determined based on the vehicle's operating conditions. The motor speed is mapped to a first fuzzy set using a first membership function to obtain a first fuzzy parameter. The first membership function is a triangular membership function or a trapezoidal membership function. The rotational speed change rate is mapped to a second fuzzy set using a second membership function to obtain a second fuzzy parameter. The second membership function is a triangular membership function or a Gaussian membership function. The road slope is mapped to a third fuzzy set using a third membership function to obtain a third fuzzy parameter. The third membership function is a Gaussian shape membership function. The gearbox shifting state is converted into a fourth fuzzy parameter. The first fuzzy parameter, the second fuzzy parameter, the third fuzzy parameter, and the fourth fuzzy parameter are mapped to a fourth fuzzy set using a fourth membership function to obtain the possibility. The fourth membership function is a triangular membership function or a trapezoidal membership function.

7. The method according to claim 1, characterized in that, After removing the power from the range extender of the range-extended vehicle, the method further includes: The vehicle's operating conditions are monitored in real time, and it is determined whether the vehicle's operating conditions meet the first preset conditions. If the vehicle's operating conditions do not meet the first preset conditions, the torque of the range extender is increased by a second preset slope until the power of the range extender equals the target power.

8. A power control device for a range extender of a range-extended vehicle, characterized in that, The device includes: The first acquisition unit is used to acquire the overall vehicle operating conditions of the range-extended vehicle and determine whether the overall vehicle operating conditions meet each first preset operating condition, wherein each first preset operating condition is the parameter value range of the overall vehicle operating conditions under different specific scenarios. The first control unit is configured to, when the vehicle operating conditions meet any of the first preset operating conditions, remove the power of the range extender of the range-extended vehicle and maintain the rotational speed of the range extender unchanged during the removal and filtration process.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device on which the computer-readable storage medium is located to perform the method according to any one of claims 1 to 7.

10. A range-extended vehicle, characterized in that, include: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising methods for performing any one of claims 1 to 7.

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