Vehicle range extender control method, device and equipment and storage medium

Abstract

The invention relates to the technical field of range extender control, and discloses a vehicle range extender control method and device, equipment and a storage medium, and the method comprises the steps: obtaining a first weighting coefficient corresponding to a first power curve of a vehicle and a second weighting coefficient corresponding to a second power curve of the vehicle when the vehicle is in a first preset mode; determining a first working parameter of the vehicle range extender according to the current required power of the vehicle and the first power curve, and determining a second working parameter of the vehicle range extender according to the required power and the second power curve; and performing weighting calculation according to the first weighting coefficient, the second weighting coefficient, the first working parameter and the second working parameter to obtain a target working parameter of the vehicle range extender, and controlling the vehicle range extender to work according to the target working parameter. Therefore, the target working parameter can be determined between the first power curve and the second power curve according to the first weighting coefficient and the second weighting coefficient, so that the proper target working parameter can be determined according to the actual demand of a user.

Description

Technical Field

[0001] This application relates to the field of range extender control technology, specifically to a vehicle range extender control method, device, equipment, and storage medium. Background Technology

[0002] With the rapid development of new energy vehicles, range-extended electric vehicles are gradually gaining market favor. Range-extended electric vehicles are equipped with a range extender consisting of an engine and a generator, used to provide power to the vehicle when the battery is low.

[0003] However, existing range-extended electric vehicles have some shortcomings in terms of power generation adjustment. They usually generate electricity with fixed preset power generation curve parameters. The power generation parameters of the range extender are not intelligent enough and cannot determine the appropriate power generation parameters according to the actual needs of users. Summary of the Invention

[0004] In view of the above problems, this application provides a vehicle range extender control method, device, equipment and storage medium, which can determine the target operating parameters between the first power curve and the second power curve based on the first weighting coefficient and the second weighting coefficient, so as to determine the appropriate target operating parameters according to the user's actual needs.

[0005] The first aspect of this application provides a vehicle range extender control method, comprising: when the vehicle is in a first preset mode, acquiring a first weighting coefficient corresponding to a first power curve of the vehicle and a second weighting coefficient corresponding to a second power curve of the vehicle; the first power curve and the second power curve are used to reflect the relationship between the torque and speed of the vehicle range extender; determining a first operating parameter of the vehicle range extender based on the current power demand of the vehicle and the first power curve, and determining a second operating parameter of the vehicle range extender based on the power demand and the second power curve; performing a weighted calculation based on the first weighting coefficient, the second weighting coefficient, the first operating parameter, and the second operating parameter to obtain a target operating parameter of the vehicle range extender, and controlling the vehicle range extender to operate based on the target operating parameter.

[0006] In some specific embodiments, the step of obtaining the first weighting coefficient corresponding to the first power curve of the vehicle and the second weighting coefficient corresponding to the second power curve of the vehicle includes: obtaining a user instruction; wherein the user instruction is used to determine the first weight and the second weight corresponding to the first power curve and the second power curve, respectively; based on the user instruction, the first weight and the second weight are used as the first weighting coefficient corresponding to the first power curve and the second weighting coefficient corresponding to the second power curve, respectively.

[0007] In some specific embodiments, the step of obtaining the target operating parameters of the vehicle range extender by weighting calculation based on the first weighting coefficient, the second weighting coefficient, the first operating parameter, and the second operating parameter includes: determining the first torque and the second torque corresponding to the first operating parameter and the second operating parameter, respectively, and determining the torque difference between the first torque and the second torque; determining the first product of the first torque and the first weighting coefficient, and determining the second product of the second torque and the second weighting coefficient, taking the sum of the first product and the second product as the target torque, and determining the target speed based on the current power demand and the target torque, so as to obtain the target operating parameters based on the target torque and the target speed.

[0008] In some specific embodiments, the method further includes: if the vehicle is in a second preset mode, determining the first operating parameters of the vehicle range extender based on the vehicle's current power demand and a first power curve, and controlling the vehicle range extender to operate based on the first operating parameters; wherein the first power curve corresponds to optimal NVH; if the vehicle is in a third preset mode, determining the second operating parameters of the vehicle range extender based on the vehicle's current power demand and a second power curve, and controlling the vehicle range extender to operate based on the second operating parameters; wherein the second power curve corresponds to optimal energy consumption.

[0009] In some specific embodiments, the method further includes: if the vehicle is in a fourth preset mode, determining the third operating parameters of the vehicle range extender based on the vehicle's current power demand and the third power curve, and controlling the vehicle range extender to operate based on the third operating parameters; wherein the third power curve is located between the first power curve and the second power curve.

[0010] In some specific embodiments, the method includes: determining the NVH performance parameters and oil-to-electric conversion efficiency parameters of the power point between the first power curve and the second power curve under each equal power line; determining the target power point that meets the target NVH requirements and the target oil-to-electric conversion efficiency requirements based on the NVH performance parameters and the oil-to-electric conversion efficiency; and obtaining the third power curve based on the target power point under each equal power line.

[0011] In some specific embodiments, the step of obtaining the first weighting coefficient corresponding to the first power curve of the vehicle and the second weighting coefficient corresponding to the second power curve of the vehicle includes: obtaining the current driving style of the vehicle; and determining the first weighting coefficient corresponding to the first power curve of the vehicle and the second weighting coefficient corresponding to the second power curve of the vehicle based on the correspondence between the preset driving style, the preset first weighting coefficient and the preset second weighting coefficient.

[0012] A second aspect of this application provides a vehicle range extender control device, comprising: an acquisition module, configured to acquire, when the vehicle is in a first preset mode, a first weighting coefficient corresponding to a first power curve of the vehicle and a second weighting coefficient corresponding to a second power curve of the vehicle; the first power curve and the second power curve are used to reflect the relationship between the torque and speed of the vehicle range extender; a determination module, configured to determine a first operating parameter of the vehicle range extender based on the current power demand of the vehicle and the first power curve, and determine a second operating parameter of the vehicle range extender based on the power demand and the second power curve; and perform weighted calculation based on the first weighting coefficient, the second weighting coefficient, the first operating parameter and the second operating parameter to obtain a target operating parameter of the vehicle range extender; and a control module, configured to control the operation of the vehicle range extender according to the target operating parameter.

[0013] A third aspect of this application provides an electronic device, comprising: a processor; and a memory for storing a computer program, wherein the computer program, when executed by the processor, implements the vehicle range extender control method described above.

[0014] The fourth aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the vehicle range extender control method as described above.

[0015] The beneficial technical effects of this application are at least as follows: Based on the vehicle range extender control method, device, equipment, and storage medium provided in this application, the method includes: when the vehicle is in a first preset mode, acquiring a first weighting coefficient corresponding to a first power curve of the vehicle and a second weighting coefficient corresponding to a second power curve of the vehicle; the first power curve and the second power curve are used to reflect the relationship between the torque and speed of the vehicle range extender; determining a first operating parameter of the vehicle range extender based on the current power demand of the vehicle and the first power curve, and determining a second operating parameter of the vehicle range extender based on the power demand and the second power curve; performing a weighted calculation based on the first weighting coefficient, the second weighting coefficient, the first operating parameter, and the second operating parameter to obtain the target operating parameter of the vehicle range extender, and controlling the operation of the vehicle range extender based on the target operating parameter. Therefore, it is possible to determine the target operating parameter between the first power curve and the second power curve based on the first weighting coefficient and the second weighting coefficient, so as to determine a suitable target operating parameter according to the actual needs of the user.

[0016] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0017] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a flowchart illustrating an embodiment of the vehicle range extender control method provided in this application; Figure 2 This is a universal characteristic diagram of a range extender; Figure 3 This is a flowchart illustrating another embodiment of the vehicle range extender control method provided in this application; Figure 4 This is a flowchart illustrating another embodiment of the vehicle range extender control method provided in this application; Figure 5 This is a flowchart illustrating another embodiment of the vehicle range extender control method provided in this application; Figure 6 This is a flowchart illustrating another embodiment of the vehicle range extender control method provided in this application; Figure 7 This is a flowchart illustrating another embodiment of the vehicle range extender control method provided in this application; Figure 8 This is a structural block diagram of an embodiment of the vehicle range extender control device provided in this application; Figure 9 This is a schematic diagram of the structural framework of an embodiment of the electronic device provided in this application; Figure 10 This is a schematic diagram of the structural framework of an embodiment of the computer-readable storage medium provided in this application. Detailed Implementation

[0018] Exemplary embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited to the embodiments set forth herein. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without inventive effort are within the scope of protection of the present application.

[0019] If the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, if the word "and / or" appears throughout the text, it means including three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0020] The first aspect of this application provides a vehicle range extender control method. Figure 1 This is a schematic flowchart of an embodiment of the vehicle range extender control method provided in this application. (In conjunction with...) Figure 1 This method includes the following steps: S101: When the vehicle is in the first preset mode, obtain the first weighting coefficient corresponding to the first power curve of the vehicle and the second weighting coefficient corresponding to the second power curve of the vehicle; wherein, the first power curve and the second power curve are used to reflect the relationship between the torque and speed of the vehicle range extender.

[0021] Several control modes can be set, with the first preset mode being one of them. In this mode, the system comprehensively considers the vehicle's first and second power curves to obtain operating parameters that better suit current driving needs. In some application scenarios, the first power curve is located above the second power curve. In this case, the torque output capability represented by the first power curve is relatively strong, leaning towards NVH performance optimization, while the second power curve may focus more on energy consumption optimization, i.e., pursuing a better fuel-electric conversion rate.

[0022] Specifically, the vehicle first obtains a first weighting coefficient corresponding to the first power curve and a second weighting coefficient corresponding to the second power curve. These two weighting coefficients are key to the subsequent calculation of the target operating parameters. They can reflect the weight distribution under different power curves, thereby ensuring the accuracy and rationality of the target operating parameters.

[0023] Figure 2 This is a characteristic diagram of a range extender.

[0024] Combination Figure 2In the coordinate system, the horizontal axis represents rotational speed, and the vertical axis represents torque. Curve L1 is the first power curve, and curve L2 is the second power curve. At this point, both curves L1 and L2 consist of power generation points, corresponding to the horizontal axis representing power generation speed and the vertical axis representing power generation torque. It should be understood that the power generation speed and torque are the engine speed and torque of the range extender. Figure 2 The curves marked with numbers arranged at multiple intervals in the diagram are isopower lines, and the power generation points on the same isopower line correspond to the same power generation. Figure 2 The closed loop in the diagram represents the oil-to-electricity conversion rate loop. The oil-to-electricity conversion rates corresponding to the power generation points on the same loop are equal, and the oil-to-electricity conversion rates of the power generation points within the loop are greater than those of the power generation points on the loop.

[0025] S102: Determine the first operating parameters of the vehicle range extender based on the vehicle's current power demand and the first power curve, and determine the second operating parameters of the vehicle range extender based on the power demand and the second power curve.

[0026] This step involves obtaining the first weighting coefficient corresponding to the vehicle's first power curve and the second weighting coefficient corresponding to the vehicle's second power curve. Further, based on the vehicle's current power demand, the corresponding first and second operating parameters are retrieved from the first and second power curves, respectively. Combined with... Figure 2 The first operating parameter is the speed and torque corresponding to the power generation point on the first power curve when the power value is the current required power. The second operating parameter is the speed and torque corresponding to the power generation point on the second power curve when the power value is the current required power. In this way, the specific operating parameters of the vehicle range extender under the current required power can be clearly defined under different power curve settings.

[0027] S103: Perform weighted calculations based on the first weighting coefficient, the second weighting coefficient, the first working parameter, and the second working parameter to obtain the target working parameters of the vehicle range extender, and control the operation of the vehicle range extender according to the target working parameters.

[0028] This step further integrates the obtained first weighting coefficient, second weighting coefficient, first operating parameter, and second operating parameter for weighted calculation to obtain the target operating parameters of the vehicle range extender. It should be understood that since the first and second weighting coefficients reflect the weight distribution under different power curves, the first operating parameter can be weighted using the first and second weighting coefficients with the second operating parameter, thereby making the weighted target operating parameters more closely match the vehicle's current actual needs.

[0029] In some application scenarios, the specific method of weighted calculation can be adjusted according to actual needs. For example, the values ​​of the first and second weighting coefficients can be dynamically adjusted based on factors such as the vehicle's current driving mode, road conditions, and battery status to achieve control that better suits actual requirements.

[0030] Therefore, since the weighted calculation process takes into account the influence of different power curves on the operation of the range extender, as well as the current power demand of the vehicle, a target operating parameter that integrates multiple factors will be obtained. This target operating parameter will serve as the basis for controlling the operation of the vehicle's range extender, ensuring that the range extender can operate in the best condition, and improving the overall performance and fuel economy of the vehicle.

[0031] In summary, the vehicle range extender control method provided in this embodiment can accurately calculate and balance between the first power curve and the second power curve based on the set values ​​of the first weighting coefficient and the second weighting coefficient, thereby determining the target operating parameters most suitable for the current scenario. Therefore, it not only considers the characteristic differences between different power curves, but also incorporates the user's actual needs through flexible adjustment of the weighting coefficients, ensuring that the final determined target operating parameters are both scientifically reasonable and highly aligned with the user's personalized needs.

[0032] Figure 3 This is a flowchart illustrating another embodiment of the vehicle range extender control method provided in this application.

[0033] Combination Figure 3 In some specific embodiments, the step of obtaining the first weighting coefficient corresponding to the first power curve of the vehicle and the second weighting coefficient corresponding to the second power curve of the vehicle includes: S201: Obtain user instructions; wherein, the user instructions are used to determine the first weight and the second weight corresponding to the first power curve and the second power curve, respectively.

[0034] Specifically, user commands can be obtained through the vehicle's human-machine interface, such as a touchscreen or voice control. Users can issue commands based on their driving experience and needs to set the weights of the first and second power curves. For example, if a user prioritizes NVH performance and desires a quieter and smoother ride, they can issue commands with a higher weight on the first power curve. Conversely, if a user prioritizes fuel efficiency and wants to reduce fuel consumption, they can issue commands with a higher weight on the second power curve.

[0035] S202: Based on the user instruction, the first weight and the second weight are respectively used as the first weighting coefficient corresponding to the first power curve and the second weighting coefficient corresponding to the second power curve.

[0036] Specifically, after receiving the user's command, the vehicle further parses the command to determine the first and second weights corresponding to the user's desired first and second power curves. Then, the parsed first weight is directly used as the first weighting coefficient for the first power curve, and the second weight is used as the second weighting coefficient for the second power curve. Therefore, the setting of the weighting coefficients fully incorporates the user's subjective needs, making the target operating parameters calculated based on these weighting coefficients more suitable for the user's personalized requirements in different driving scenarios. For example, when the user sets a higher weight for the first power curve, the proportion of the first operating parameter corresponding to the first power curve in the weighted calculation will increase, making the vehicle's range extender's operating state more inclined towards the characteristics represented by the first power curve, potentially resulting in better NVH performance during vehicle operation. When the second power curve has a higher weight, the vehicle's range extender's operating state will be closer to the characteristics of the second power curve, potentially leading to better fuel economy and reduced fuel consumption.

[0037] Figure 4 This is a flowchart illustrating another embodiment of the vehicle range extender control method provided in this application.

[0038] Combination Figure 4 In some specific embodiments, the step of obtaining the target operating parameters of the vehicle range extender by weighting calculations based on a first weighting coefficient, a second weighting coefficient, a first operating parameter, and a second operating parameter includes: S301: Determine the first torque and the second torque corresponding to the first working parameter and the second working parameter, respectively.

[0039] Based on the above, the first operating parameter corresponds to the power generation point on the first power curve that satisfies the current power demand. This point has a corresponding rotational speed and torque, and its torque is determined to be the first torque. Similarly, the second operating parameter corresponds to the power generation point on the second power curve that satisfies the current power demand, and its torque is determined to be the second torque.

[0040] S302: Determine the first product of the first torque and the first weighting coefficient, and determine the second product of the second torque and the second weighting coefficient. Use the sum of the first product and the second product as the target torque, and determine the target speed based on the current power demand and the target torque, so as to use the target torque and the target speed as the target operating parameters.

[0041] Specifically, after determining the first torque and the second torque, they are multiplied by a first weighting coefficient and a second weighting coefficient, respectively. Multiplying the first weighting coefficient by the first torque yields a first product, and multiplying the second weighting coefficient by the second torque yields a second product. These two products are then added together, and the sum is the target torque. Since power equals the product of torque and speed, given the current power requirement, the target speed can be calculated based on the target torque. Finally, the determined target torque and target speed are used together as the target operating parameters for the vehicle range extender.

[0042] In summary, this calculation method fully considers the operating parameters under different power curves and their corresponding weighting coefficients, so that the target operating parameters can accurately match the actual needs of the vehicle at present, and can achieve a relatively ideal state in terms of both torque output and speed matching.

[0043] Figure 5 This is a flowchart illustrating another embodiment of the vehicle range extender control method provided in this application.

[0044] Combination Figure 5 In some specific embodiments, the method further includes: S401: If the vehicle is in the second preset mode, the first operating parameters of the vehicle range extender are determined according to the current power demand of the vehicle and the first power curve, and the operation of the vehicle range extender is controlled according to the first operating parameters; wherein, the first power curve corresponds to the optimal NVH.

[0045] Based on the above, the second preset mode is one of the aforementioned control modes. When the vehicle is in the second preset mode, the first operating parameters of the vehicle range extender are determined according to the vehicle's current power demand and the first power curve.

[0046] It should be understood that the first power curve corresponds to optimal NVH, meaning that this power curve is designed with a greater emphasis on optimizing the vehicle's noise, vibration, and acoustic roughness. During vehicle operation, NVH performance has a crucial impact on ride comfort. Determining operating parameters based on the first power curve allows the vehicle's range extender to minimize noise and vibration during operation.

[0047] Specifically, the vehicle first obtains its current power demand, which reflects the amount of power required by the vehicle under its current driving conditions. Then, it finds the power generation point corresponding to the current power demand on the first power curve. The speed and torque corresponding to this power generation point constitute the first operating parameters of the vehicle's range extender.

[0048] S402: If the vehicle is in the third preset mode, the second operating parameters of the vehicle range extender are determined according to the current power demand of the vehicle and the second power curve, and the operation of the vehicle range extender is controlled according to the second operating parameters; wherein, the second power curve corresponds to the optimal energy consumption.

[0049] When the vehicle is in the third preset mode, similar to the second preset mode, it is also based on the vehicle's current power demand, but this time it searches on the second power curve. The second power curve corresponds to optimal energy consumption, indicating that this power curve focuses on optimizing the vehicle's energy consumption to achieve more efficient oil-to-electric conversion and reduce fuel consumption.

[0050] Specifically, after the vehicle obtains its current power demand, it determines the power generation point that matches that demand on the second power curve. The speed and torque information corresponding to this power generation point constitute the second operating parameters of the vehicle's range extender. Subsequently, the vehicle controls the range extender based on these second operating parameters.

[0051] It should be understood that the step numbers above do not restrict the order in which the steps are executed. Through the above mode settings, the vehicle range extender can determine its operating parameters based on the power curves that emphasize different performance characteristics in different preset modes. That is, in the second preset mode, priority is given to ensuring the vehicle's NVH performance, making the driving experience quieter and more comfortable. In the third preset mode, the focus is on optimizing the vehicle's energy consumption and reducing operating costs.

[0052] In conjunction with the above, in some specific embodiments, the method further includes: if the vehicle is in a fourth preset mode, determining the third operating parameters of the vehicle range extender based on the vehicle's current power demand and the third power curve, and controlling the vehicle range extender to operate based on the third operating parameters; wherein the third power curve is located between the first power curve and the second power curve.

[0053] Specifically, the fourth preset mode is also a vehicle control mode. The third power curve lies between the first and second power curves, meaning it combines some characteristics of both. It doesn't focus excessively on NVH performance optimization like the first power curve, nor does it primarily pursue optimal energy consumption like the second power curve. When the vehicle is in the fourth preset mode, it first obtains the current power demand, reflecting the amount of power required under the current driving conditions. Then, it finds the power generation point corresponding to the current power demand on the third power curve. The corresponding speed and torque information constitute the third operating parameters of the vehicle's range extender. The vehicle then controls the range extender based on these third operating parameters. Therefore, in the fourth preset mode, the vehicle's range extender can find a relatively balanced state between NVH performance and energy consumption, avoiding excessive energy consumption in pursuit of quiet comfort, and also avoiding a significant impact on the driving experience in order to reduce energy consumption.

[0054] Figure 6 This is a flowchart illustrating another embodiment of the vehicle range extender control method provided in this application.

[0055] Combination Figure 6 In some specific embodiments, this method includes: S501: Determine the NVH performance parameters and oil-to-electricity conversion efficiency parameters at the power points between the first and second power curves under each equal power line.

[0056] Specifically, in Figure 2 Based on the displayed isopower lines, first power curve, and second power curve, for each isopower line, its intersection points with the first and second power curves are identified. These intersection points (including the intersection points) are the power points. For each such power point, its corresponding NVH performance parameters are determined, along with its fuel-to-electricity conversion efficiency parameter, i.e., the efficiency ratio of fuel conversion to electrical energy at that power point. In this way, comprehensive and accurate parameter information regarding the power points between the first and second power curves under each isopower line can be obtained.

[0057] S502: Based on NVH performance parameters and oil-to-electric conversion rate, the target power point that meets the target NVH requirements and the target oil-to-electric conversion rate requirements is determined, and the third power curve is obtained based on the target power point under each isoelectric power line.

[0058] Furthermore, after obtaining the NVH performance parameters and fuel-electric conversion efficiency parameters for each power point, these power points are screened according to the pre-set target NVH requirements and target fuel-electric conversion efficiency requirements. For example, if the target NVH requirement is low noise and low vibration during vehicle operation, and the target fuel-electric conversion efficiency requirement is high fuel-to-electric energy conversion efficiency, then power points with good NVH performance parameters and high fuel-electric conversion efficiency parameters are selected as target power points.

[0059] After determining the target power points under each isoelectric power line, these target power points are connected and fitted to obtain the third power curve. This third power curve combines the characteristics of the first and second power curves in terms of NVH performance and fuel-electric conversion rate, and can balance the vehicle's quiet comfort and energy efficiency to a certain extent.

[0060] Figure 7 This is a flowchart illustrating another embodiment of the vehicle range extender control method provided in this application.

[0061] Combination Figure 7 In some specific embodiments, the step of obtaining the first weighting coefficient corresponding to the first power curve of the vehicle and the second weighting coefficient corresponding to the second power curve of the vehicle includes: S601: Obtain the vehicle's current driving style.

[0062] Specifically, a vehicle's current driving style can be obtained in several ways. Firstly, it can be detected using various sensors on the vehicle, such as acceleration and steering sensors. Secondly, it can be obtained through the vehicle's human-machine interface system, allowing the driver to actively input their driving style preferences, such as setting Sport mode to represent an aggressive driving style or Comfort mode to represent a comfortable driving style.

[0063] In some application scenarios, the current driving style can also be determined by analyzing the user's historical driving behavior data. For example, if a user frequently selects driving modes associated with NVH (Noise, Vibration, and Harshness) within a specific historical period (such as the previous week), it indicates that the user prefers a comfortable driving experience. In other words, the user's driving style leans towards pursuing comfort, and they pay more attention to reducing noise, vibration, and other disturbances during driving.

[0064] S602: Based on the correspondence between the preset driving style, the preset first weighting coefficient, and the preset second weighting coefficient, determine the first weighting coefficient corresponding to the vehicle's first power curve and the second weighting coefficient corresponding to the vehicle's second power curve.

[0065] Among them, the correspondence between preset driving style, preset first weighting coefficient and preset second weighting coefficient can be preset, and this correspondence can be stored in the vehicle control system in the form of a function.

[0066] In certain application scenarios, when the current driving style of the vehicle is determined to be the preset comfort driving style through the above method, and the preset comfort driving style corresponds to the first preset coefficient 'a' and the second preset coefficient 'b' in the correspondence, then the first preset coefficient 'a' is determined as the first weighting coefficient corresponding to the vehicle's first power curve, and the second preset coefficient 'b' is determined as the second weighting coefficient corresponding to the vehicle's second power curve. These first and second preset coefficients are pre-set values ​​after extensive experimentation and data analysis. They reflect the different emphases placed on the first and second power curves under the comfort driving style. In the comfort driving style, more emphasis is usually placed on the vehicle's stability and quietness, so the first preset coefficient is set relatively larger, and the second preset coefficient is relatively smaller, but a certain proportion is retained to ensure that the vehicle does not have excessive energy consumption issues.

[0067] A second aspect of this application provides a vehicle range extender control device 80. Figure 8 This is a structural block diagram of an embodiment of the vehicle range extender control device 80 provided in this application.

[0068] Combination Figure 8 The vehicle range extender control device 80 includes: an acquisition module 81, used to acquire a first weighting coefficient corresponding to a first power curve of the vehicle and a second weighting coefficient corresponding to a second power curve of the vehicle when the vehicle is in a first preset mode; the first power curve and the second power curve are used to reflect the relationship between the torque and speed of the vehicle range extender; a determination module 82, used to determine the first operating parameters of the vehicle range extender based on the current power demand of the vehicle and the first power curve, and to determine the second operating parameters of the vehicle range extender based on the power demand and the second power curve; and to perform weighted calculations based on the first weighting coefficient, the second weighting coefficient, the first operating parameters and the second operating parameters to obtain the target operating parameters of the vehicle range extender; and a control module 83, used to control the operation of the vehicle range extender according to the target operating parameters.

[0069] Figure 9 This is a schematic diagram of the structural framework of an embodiment of the electronic device provided in this application.

[0070] Combination Figure 9In some specific embodiments, the electronic device 600 includes a central processing unit (CPU) 601 and a read-only memory (ROM) 602. The CPU 601 is a processor, and the ROM 602 is a memory. The CPU 601 can perform various appropriate actions and processes, such as executing the methods described in the above embodiments, based on programs stored in the ROM 602 or programs loaded from storage portion 608 into random access memory (RAM) 603. The RAM 603 also stores various programs and data required for system operation. The CPU 601, ROM 602, and RAM 603 are interconnected via a bus 604. An input / output (I / O) interface 605 is also connected to the bus 604.

[0071] The following components are connected to I / O interface 605: an input section 606 including a keyboard, mouse, etc.; an output section 607 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 608 including a hard disk, etc.; and a communication section 609 including a network interface card such as a LAN (Local Area Network) card, modem, etc. The communication section 609 performs communication processing via a network such as the Internet. A drive 610 is also connected to I / O interface 605 as needed. A removable medium 611, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., is installed on drive 610 as needed so that computer programs read from it can be installed into storage section 608 as needed.

[0072] Specifically, according to embodiments of this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program including a computer program for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 609, and / or installed from removable medium 611. When the computer program is executed by central processing unit (CPU) 601, it performs various functions defined in the system of this application.

[0073] A third aspect of this application provides a computer-readable storage medium 40, Figure 10This is a schematic diagram of the structural framework of an embodiment of the computer-readable storage medium provided in this application.

[0074] Combination Figure 10 The computer-readable storage medium 40 stores a computer program 41, which, when executed by a processor, implements the vehicle range extender control method as described in any of the above embodiments.

[0075] It should be noted that the computer-readable medium 40 shown in the embodiments of this application can be a computer-readable signal medium, a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disc read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this application, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying a computer-readable computer program. The transmitted data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. The computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, etc., or any suitable combination thereof.

[0076] In summary, the vehicle range extender control method, apparatus, device, and storage medium provided in this application include: when the vehicle is in a first preset mode, acquiring a first weighting coefficient corresponding to a first power curve of the vehicle and a second weighting coefficient corresponding to a second power curve of the vehicle; the first power curve and the second power curve are used to reflect the relationship between the torque and speed of the vehicle range extender; determining a first operating parameter of the vehicle range extender based on the vehicle's current power demand and the first power curve, and determining a second operating parameter of the vehicle range extender based on the power demand and the second power curve; performing a weighted calculation based on the first weighting coefficient, the second weighting coefficient, the first operating parameter, and the second operating parameter to obtain the target operating parameter of the vehicle range extender, and controlling the operation of the vehicle range extender based on the target operating parameter. Therefore, it is possible to determine the target operating parameter between the first power curve and the second power curve based on the first weighting coefficient and the second weighting coefficient, so as to determine a suitable target operating parameter according to the user's actual needs.

[0077] The above description is merely a preferred exemplary embodiment of this application and is not intended to limit the implementation of this application. Those skilled in the art can easily make corresponding modifications or alterations based on the main concept and spirit of this application. Therefore, the scope of protection of this application should be determined by the scope of protection claimed in the claims.

Claims

1. A vehicle range extender control method, characterized in that, include: When the vehicle is in a first preset mode, a first weighting coefficient corresponding to the first power curve of the vehicle and a second weighting coefficient corresponding to the second power curve of the vehicle are obtained; the first power curve and the second power curve are used to reflect the relationship between the torque and speed of the vehicle range extender; The first operating parameters of the vehicle range extender are determined based on the vehicle's current power demand and the first power curve, and the second operating parameters of the vehicle range extender are determined based on the power demand and the second power curve. The target operating parameters of the vehicle range extender are obtained by weighting the first weighting coefficient, the second weighting coefficient, the first operating parameter, and the second operating parameter, and the vehicle range extender is controlled to operate according to the target operating parameters.

2. The vehicle range extender control method according to claim 1, characterized in that, The steps of obtaining the first weighting coefficient corresponding to the first power curve of the vehicle and the second weighting coefficient corresponding to the second power curve of the vehicle include: Obtain user instructions; wherein, the user instructions are used to determine the first weight and the second weight corresponding to the first power curve and the second power curve, respectively; Based on the user instruction, the first weight and the second weight are respectively used as the first weighting coefficient corresponding to the first power curve and the second weighting coefficient corresponding to the second power curve.

3. The vehicle range extender control method according to claim 1, characterized in that, The step of obtaining the target operating parameters of the vehicle range extender by performing a weighted calculation based on the first weighting coefficient, the second weighting coefficient, the first operating parameter, and the second operating parameter includes: Determine the first torque and the second torque corresponding to the first operating parameter and the second operating parameter, respectively; The first product of the first torque and the first weighting coefficient is determined, and the second product of the second torque and the second weighting coefficient is determined. The sum of the first product and the second product is taken as the target torque, and the target speed is determined based on the current power demand and the target torque, so as to take the target torque and the target speed as the target operating parameters.

4. The vehicle range extender control method according to claim 1, characterized in that, The method further includes: If the vehicle is in the second preset mode, the first operating parameters of the vehicle range extender are determined according to the current power demand of the vehicle and the first power curve, and the vehicle range extender is controlled to work according to the first operating parameters; wherein, the first power curve corresponds to optimal NVH; If the vehicle is in the third preset mode, the second operating parameters of the vehicle range extender are determined according to the current power demand of the vehicle and the second power curve, and the vehicle range extender is controlled to work according to the second operating parameters; wherein, the second power curve corresponds to the optimal energy consumption.

5. The vehicle range extender control method according to claim 4, characterized in that, The method further includes: If the vehicle is in the fourth preset mode, the third operating parameters of the vehicle range extender are determined based on the vehicle's current power demand and the third power curve, and the vehicle range extender is controlled to operate based on the third operating parameters; wherein, the third power curve is located between the first power curve and the second power curve.

6. The vehicle range extender control method according to claim 5, characterized in that, The method includes: Determine the NVH performance parameters and oil-to-electricity conversion efficiency parameters of the power points between the first power curve and the second power curve under each equal power line. Based on the NVH performance parameters and the oil-to-electric conversion rate, a target power point that meets the target NVH requirements and the target oil-to-electric conversion rate requirements is determined, and a third power curve is obtained based on the target power point under each of the equal power lines.

7. The vehicle range extender control method according to claim 1, characterized in that, The steps of obtaining the first weighting coefficient corresponding to the first power curve of the vehicle and the second weighting coefficient corresponding to the second power curve of the vehicle include: Obtain the current driving style of the vehicle; Based on the correspondence between the preset driving style, the preset first weighting coefficient, and the preset second weighting coefficient, the first weighting coefficient corresponding to the first power curve of the vehicle and the second weighting coefficient corresponding to the second power curve of the vehicle are determined.

8. A vehicle range extender control device, characterized in that, include: The acquisition module is used to acquire a first weighting coefficient corresponding to a first power curve of the vehicle and a second weighting coefficient corresponding to a second power curve of the vehicle when the vehicle is in a first preset mode; the first power curve and the second power curve are used to reflect the relationship between the torque and speed of the vehicle range extender; The determining module is configured to determine the first operating parameters of the vehicle range extender based on the current power demand of the vehicle and the first power curve, and determine the second operating parameters of the vehicle range extender based on the power demand and the second power curve; and perform weighted calculation based on the first weighting coefficient, the second weighting coefficient, the first operating parameters and the second operating parameters to obtain the target operating parameters of the vehicle range extender. The control module is used to control the operation of the vehicle range extender according to the target operating parameters.

9. An electronic device, characterized in that, include: processor; A memory for storing a computer program that, when executed by the processor, implements the vehicle range extender control method according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, which, when executed by a processor, implements the vehicle range extender control method as described in any one of claims 1-7.

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