A control method and device of a vehicle range extender, a vehicle and a storage medium

Abstract

This application discloses a control method, device, vehicle, and storage medium for a vehicle range extender. The control method includes: if the change in accelerator pedal opening is determined to be less than or equal to a preset opening value, then limiting the range extender's power generation value to be less than or equal to an upper limit of output power, where the upper limit of output power is less than the maximum power generation value of the range extender; if the change in accelerator pedal opening is determined to be greater than the preset opening value, and the vehicle is determined to be in an acceleration state, then adjusting the range extender's power generation value to be greater than the upper limit of output power; if the change in accelerator pedal opening is determined to be greater than the preset opening value, and the vehicle is determined to be in a deceleration state, then adjusting the range extender's power generation value to be less than or equal to a lower limit of output power, where the lower limit of output power is less than the upper limit of output power. Applying the technical solution of this application can better balance the vehicle's power demand and NVH performance.

Description

Technical Field

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

[0002] In existing range-extended vehicles, if the power output of the range extender fluctuates too much during power generation (e.g., during rapid acceleration or deceleration), it severely deteriorates the vehicle's ride comfort, noise, vibration, and harshness (NVH) performance. However, if the power output remains consistently low, insufficient vehicle power may occur during rapid acceleration. Therefore, existing technologies struggle to achieve coordinated optimization of power demand and NVH performance under complex driving scenarios. Summary of the Invention

[0003] In view of the above problems, this application provides a control method, device, vehicle and storage medium for a vehicle range extender, which can better balance the vehicle's power demand and NVH performance.

[0004] According to one aspect of the embodiments of this application, a control method for a vehicle range extender is provided. The control method includes: acquiring road condition information of the current driving segment of the vehicle, the current vehicle speed, the change value of the accelerator pedal opening, and the average vehicle speed; adjusting and determining the power generation value of the range extender based on the road condition information, the current vehicle speed, and the average vehicle speed; if it is determined that the change value of the accelerator pedal opening is less than or equal to a preset opening value, then limiting the power generation value of the range extender to be less than or equal to an upper limit value of output power. The upper limit of the power output is less than the maximum power output of the range extender. If the change in the accelerator pedal opening is greater than a preset opening value, and the vehicle is in an acceleration state, the power output of the range extender is adjusted to be greater than the upper limit of the output power. If the change in the accelerator pedal opening is greater than a preset opening value, and the vehicle is in a deceleration state, the power output of the range extender is adjusted to be less than or equal to the lower limit of the output power, which is less than the upper limit of the output power. The range extender is controlled to generate electricity based on the adjusted power output of the range extender.

[0005] In one optional exemplary embodiment, if it is determined that the change value of the accelerator pedal opening is greater than a preset opening value, and it is determined that the vehicle is in an acceleration state, then adjusting the power generation value of the range extender to be greater than the upper limit of the output power includes: if it is determined that the change value of the accelerator pedal opening is greater than the preset opening value within a preset time period, and it is determined that the vehicle is in an acceleration state, then obtaining the maximum power generation value of the range extender; determining the maximum power generation value as the target power generation value of the range extender; and adjusting the power generation value of the range extender to the target power generation value based on the target power generation value.

[0006] In one optional exemplary embodiment, if it is determined that the change value of the accelerator pedal opening is greater than a preset opening value, and it is determined that the vehicle is in an acceleration state, then adjusting the power generation value of the range extender to be greater than the upper limit of the output power includes: if it is determined that the change value of the accelerator pedal opening is greater than the preset opening value within a preset time period, and it is determined that the vehicle is in an acceleration state, then predicting the maximum torque demand value of the vehicle; determining the target power generation value of the range extender based on the maximum torque demand value of the vehicle; and adjusting the power generation value of the range extender to the target power generation value based on the target power generation value.

[0007] In one optional exemplary embodiment, adjusting the power output of the range extender based on the target power output value includes: calculating the power difference between the current power output of the range extender and the target power output value; determining the power change rate of the range extender based on the power difference; and adjusting the power output of the range extender based on the power change rate.

[0008] In one optional exemplary embodiment, if it is determined that the change in the accelerator pedal opening is greater than a preset opening value, and it is determined that the vehicle is in a deceleration state, then adjusting the power generation value of the range extender to be less than or equal to the lower limit of the output power includes: if it is determined that the change in the accelerator pedal opening is greater than the preset opening value, and it is determined that the vehicle is in a deceleration state, then obtaining the deceleration rate of the vehicle within the preset time period; adjusting the power generation value of the range extender to be less than or equal to the lower limit of the output power based on the deceleration rate, wherein the lower limit of the output power is less than the upper limit of the output power.

[0009] In an optional exemplary embodiment, the method includes: determining the slope value of the road segment where the vehicle is located based on the road condition information; determining the upper limit value of the output power based on the relationship between the slope value and a slope threshold; if the slope value is greater than or equal to the slope threshold, determining the upper limit value of the output power as a first output power value; if the slope value is less than the slope threshold, determining the upper limit value of the output power as a second output power value; wherein the first output power value is greater than the second output power value.

[0010] In an optional exemplary embodiment, determining the power generation value of the range extender of the vehicle based on the road condition information, the current vehicle speed value, and the average vehicle speed value includes: determining a vehicle speed threshold based on the average vehicle speed value and a preset vehicle speed redundancy value; if the current vehicle speed value is less than the vehicle speed threshold and the gradient value is less than the gradient threshold, then determining the power generation value of the range extender based on the mapping relationship between the current vehicle speed value and the power calibration value of the range extender; if the current vehicle speed value is less than the vehicle speed threshold and the gradient value is greater than the gradient threshold, then determining the power generation value of the range extender based on the mapping relationship between the current vehicle speed value and the power calibration value of the range extender and the mapping relationship between the gradient value and the power compensation calibration value of the range extender; if the current vehicle speed value is greater than the vehicle speed threshold and the gradient value is greater than the gradient threshold, then determining the power generation value of the range extender as the first output power value; if the current vehicle speed value is greater than the vehicle speed threshold and the gradient value is less than the gradient threshold, then determining the power generation value of the range extender as the second output power value.

[0011] According to another aspect of the embodiments of this application, a vehicle is provided, comprising: an acquisition module, configured to acquire road condition information of the current driving segment of the vehicle, the current speed value of the vehicle, the change value of the accelerator pedal opening of the vehicle, and the average speed value of the vehicle; a determination module, configured to adjust and determine the power generation value of the range extender of the vehicle based on the road condition information, the current speed value, and the average speed value; and a limiting module, configured to limit the power generation value of the range extender to be less than or equal to an upper limit value of output power if the change value of the accelerator pedal opening is determined to be less than or equal to a preset opening value. The upper limit value is less than the maximum power generation value of the range extender; the adjustment module, if it is determined that the change value of the accelerator pedal opening is greater than the preset opening value, and it is determined that the vehicle is in an acceleration state, then adjusts the power generation value of the range extender to be greater than the upper limit value of the output power; if it is determined that the change value of the accelerator pedal opening is greater than the preset opening value, and it is determined that the vehicle is in a deceleration state, then adjusts the power generation value of the range extender to be less than or equal to the lower limit value of the output power, the lower limit value of the output power is less than the upper limit value of the output power; the control module is used to control the range extender to generate electricity based on the adjusted power generation value of the range extender.

[0012] According to another aspect of the embodiments of this application, a vehicle is provided, including: a controller; and a memory for storing one or more programs, which, when executed by the controller, cause the controller to implement the above-described control method for a vehicle range extender.

[0013] According to another aspect of the embodiments of this application, a computer-readable storage medium is provided, the storage medium storing a computer program, the computer program including at least one executable instruction, which, when executed on a vehicle range extender control device / vehicle, causes the vehicle range extender control device / vehicle to perform operations as described above in the vehicle range extender control method.

[0014] The control method for the vehicle range extender in this application first determines the power generation value of the vehicle range extender based on road condition information, current vehicle speed, and average vehicle speed. Then, it limits the power generation value of the vehicle range extender to be less than or equal to the upper limit of output power (the upper limit of output power is less than the maximum power generation value of the range extender). This allows the power generation value of the vehicle range extender to be adaptively adjusted according to the vehicle's state, while also preventing the power generation value of the vehicle range extender from suddenly increasing to the maximum power generation value, thus avoiding deterioration of the vehicle's NVH performance.

[0015] Furthermore, by monitoring the change in the accelerator pedal opening of the vehicle, when the change in the accelerator pedal opening exceeds a preset value, the power output of the range extender is adjusted without being limited by the upper limit of the output power. This allows the power output of the range extender to be less than or equal to the maximum power output of the range extender, enabling adaptive changes (e.g., reducing or increasing the power output of the range extender) to balance the vehicle's power requirements and NVH performance.

[0016] Therefore, the control method of the vehicle range extender in this application can better balance the vehicle's power demand and NVH performance.

[0017] 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

[0018] 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:

[0019] Figure 1 A flowchart illustrating steps S110-S150 of the control method for the vehicle range extender provided in this application is shown.

[0020] Figure 2 A flowchart illustrating steps S131-S132 of the control method for the vehicle range extender provided in this application is shown.

[0021] Figure 3 A flowchart illustrating steps S133-S137 of the control method for the vehicle range extender provided in this application is shown.

[0022] Figure 4 A flowchart illustrating steps S141-S143 of the control method for the vehicle range extender provided in this application is shown.

[0023] Figure 5 A flowchart illustrating steps S141'-S143' of the control method for the vehicle range extender provided in this application is shown.

[0024] Figure 6 A schematic diagram of the structure of a control device for a vehicle range extender provided in this application is shown.

[0025] Figure 7 A schematic diagram of the structure of a computer system for an electronic device provided in this application is shown. Detailed Implementation

[0026] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0027] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0028] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0029] In this application, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0030] Combination Figures 1 to 7 As shown, this embodiment provides a control method, device, vehicle, and storage medium for a vehicle range extender, which can optimize the power generation of the range extender under rapid acceleration and deceleration conditions and improve the NVH performance of the entire vehicle.

[0031] Figure 1 A schematic flowchart illustrating steps S110-S150 of the control method for a vehicle range extender provided in an embodiment of this application is shown. This method is executed by the control device 300 of the vehicle range extender. Please refer to... Figure 1 As shown, the method includes steps S110 to S150, which are described in detail below.

[0032] Step S110: Obtain road condition information of the current driving segment of the vehicle, the current speed of the vehicle, the change value of the accelerator pedal opening of the vehicle, and the average speed of the vehicle in the previous period.

[0033] For example, road condition information can be obtained from the vehicle's onboard GPS or high-precision maps, onboard cameras, and onboard radar. This road condition information includes at least the gradient of the current road segment and the adjusted mileage of the current road segment.

[0034] It should be understood that the current road segment of the vehicle refers to the road segment that the vehicle is about to travel on.

[0035] For example, the vehicle's current speed and accelerator pedal opening can be obtained from the vehicle's onboard navigation or speed sensor.

[0036] For example, the remaining battery level of a vehicle can be determined based on its onboard battery detection sensor.

[0037] Step S120: Based on road condition information, current vehicle speed and average vehicle speed, determine the power generation value of the vehicle's range extender.

[0038] In this embodiment, the remaining battery level of the vehicle is first obtained. If the remaining battery level is greater than the battery threshold, the power output of the vehicle's range extender is adjusted and determined based on road condition information, the current vehicle speed, and the average vehicle speed.

[0039] It should be understood that the remaining battery charge of the vehicle in this application refers to the remaining battery charge of the vehicle's power battery pack.

[0040] In an exemplary embodiment of this application, the battery threshold can be the battery level at which the vehicle is forced to maintain its battery power, or the minimum protected battery level of the vehicle (e.g., three percent of the maximum battery level of the entire vehicle).

[0041] For example, when the battery threshold is the battery level that the vehicle is required to maintain, optionally, in a pure electric mode, the battery threshold is 20% of the vehicle's maximum battery level, and in a fuel mode, the battery threshold is 60% of the vehicle's maximum battery level.

[0042] In an exemplary embodiment of this application, if the remaining battery power is less than or equal to the battery power threshold and the remaining battery power is insufficient to reach the vehicle's destination, the power generation value of the range extender can be determined as the maximum power generation value in order to ensure the vehicle's range.

[0043] Step S130: If it is determined that the change value of the accelerator pedal opening is less than or equal to the preset opening value, then the power generation value of the range extender is limited to be less than or equal to the upper limit value of the output power, and the upper limit value of the output power is less than the maximum power generation value of the range extender.

[0044] Figure 2 This document shows a flowchart illustrating steps S131-S132 of the control method for a vehicle range extender provided in an embodiment of this application. Please refer to the provided text. Figure 2 As shown, the method for determining the upper limit of the output power of the vehicle's range extender includes steps S131 to S132, which are described in detail below:

[0045] Step S131: Determine the slope value of the road segment where the vehicle is located based on road condition information.

[0046] Step S132: Determine the upper limit of output power based on the relationship between the slope value and the slope threshold.

[0047] In an exemplary embodiment of this application, if the slope value is greater than or equal to a slope threshold, the upper limit of the output power is determined to be a first output power value; if the slope value is less than the slope threshold, the upper limit of the output power is determined to be a second output power value. The first output power value is greater than the second output power value.

[0048] For example, the gradient threshold can be obtained by calibrating the gradient with the power output of the vehicle's range extender, such as a gradient threshold of 2°. The first output power value is 50kW, and the second output power value is 30kW.

[0049] It should be understood that by dynamically determining the first and second output power values ​​of the range extender based on the gradient value in the road condition information, and using this as the upper limit of the output power, the range extender can provide higher power generation to cope with the increased vehicle load on road sections with larger gradients, while limiting the power on flat road sections to optimize NVH performance. This approach achieves an adaptive balance between power demand and NVH performance under different road conditions.

[0050] Figure 3 A flowchart illustrating steps S133-S137 of the control method for a vehicle range extender provided in this application embodiment is shown. Please refer to [link / reference]. Figure 3 As shown, the method for determining the power generation value of the vehicle's range extender based on road condition information, current vehicle speed, and average vehicle speed includes steps S133 to S1237, which are detailed below:

[0051] Step S133: Determine the vehicle speed threshold based on the average vehicle speed value and the preset vehicle speed redundancy value.

[0052] For example, the average speed is the average speed of a vehicle on a road segment over the first 10 minutes.

[0053] For example, the preset speed redundancy value is 20 km / h. The speed threshold is the average speed value plus the preset speed redundancy value.

[0054] Step S134: If the current vehicle speed value is less than the vehicle speed threshold and the gradient value is less than the gradient threshold, then determine the power generation value of the range extender based on the mapping relationship between the current vehicle speed value and the power calibration value of the range extender.

[0055] For example, when the current vehicle speed is less than the vehicle speed threshold and the gradient is less than the gradient threshold, the power generation value is obtained directly from the vehicle's built-in mapping table (vehicle speed-power relationship).

[0056] Step S135: If the current vehicle speed is less than the vehicle speed threshold and the gradient is greater than the gradient threshold, then the power generation value of the range extender is determined based on the mapping relationship between the current vehicle speed and the power calibration value of the range extender and the mapping relationship between the gradient value and the power compensation calibration value of the range extender.

[0057] For example, when the current vehicle speed is less than the vehicle speed threshold and the gradient is greater than the gradient threshold, the output power value of the range extender corresponding to the current vehicle speed is first obtained according to the vehicle's built-in mapping table (vehicle speed-power relationship). Then, the compensation power value of the range extender corresponding to the gradient is obtained according to the compensation table (gradient-power compensation relationship). The two are then added together to obtain the power generation value of the range extender.

[0058] Step S136: If the current vehicle speed value is greater than the vehicle speed threshold and the gradient value is greater than the gradient threshold, then the power generation value of the range extender is determined to be the first output power value.

[0059] Step S137: If the current vehicle speed is greater than the vehicle speed threshold and the gradient is less than the gradient threshold, then the power generation value of the range extender is determined to be the second output power value.

[0060] It should be understood that by comprehensively considering the current vehicle speed, average vehicle speed, and gradient, the power output of the range extender can be accurately determined under multiple conditions, ensuring that the vehicle receives sufficient power support in complex scenarios such as high speed and high gradient, while limiting power output under normal operating conditions, thereby optimizing power response and NVH performance in all scenarios.

[0061] Step S140: If it is determined that the change in accelerator pedal opening is greater than the preset opening value, then adjust the power output of the range extender so that the power output of the range extender is less than or equal to the maximum power output of the range extender.

[0062] It should be understood that by judging the relationship between the change in accelerator pedal opening value within a preset time period and the preset opening value, it is possible to determine whether the vehicle is in a situation of rapid acceleration or deceleration, and whether there is a continuous demand for large driving torque.

[0063] Figure 4 A flowchart illustrating steps S141-S143 of the control method for a vehicle range extender provided in this application embodiment is shown. Please refer to [link / reference]. Figure 4 As shown, if it is determined that the change in throttle pedal opening value is greater than the preset opening value within a preset time period, the method for adjusting the power generation value of the range extender includes steps S141 to S143, which are described in detail below:

[0064] Step S141: If it is determined that the change value of the accelerator pedal opening is greater than the preset opening value within the preset time period, and it is determined that the vehicle is in an acceleration state, then obtain the maximum power generation value of the range extender (i.e., the actual maximum power generation value).

[0065] For example, the preset duration can be 2 seconds, and the preset opening value can be 95% of the maximum opening value of the accelerator pedal.

[0066] Step S142: Determine the maximum power generation value as the target power generation value of the range extender.

[0067] Step S143: Adjust the range extender's power output value to the target power output value based on the target power output value.

[0068] It should be understood that when the vehicle is in an acceleration state and the acceleration and deceleration information meets the preset conditions, the power output of the range extender is adjusted to the maximum power output value to ensure that the vehicle obtains sufficient power output under rapid acceleration conditions, thereby avoiding the problem of weak vehicle acceleration caused by insufficient power of the range extender.

[0069] Figure 5 This document shows a flowchart illustrating steps S141'-S143' of the control method for a vehicle range extender provided in an embodiment of this application. Please refer to [link / reference]. Figure 5 As shown, if it is determined that the change in throttle pedal opening value is greater than the preset opening value within a preset time period, the method for adjusting the power generation value of the range extender includes steps S141' to S143', which are detailed below:

[0070] Step S141: If it is determined that the change in accelerator pedal opening is greater than the preset opening value within a preset time period, and it is determined that the vehicle is in an acceleration state, then the maximum torque demand value of the vehicle is predicted.

[0071] In one exemplary embodiment of this application, the driver's driving intention can be identified by the vehicle's intelligent driver assistance system, and the maximum torque demand value of the vehicle can be determined based on the driving intention.

[0072] For example, if the vehicle's intelligent driver assistance system recognizes the driver's need to overtake continuously, the system can calculate the distance the vehicle needs to overtake and the minimum speed required to complete the overtaking maneuver. Then, based on the required overtaking distance and the minimum speed required to complete the overtaking maneuver, the system can predict the vehicle's maximum torque requirement.

[0073] For example, if the vehicle's intelligent driver assistance system recognizes the driver's need to climb a hill quickly, the system can calculate the distance and gradient of the hill that the vehicle needs to climb, as well as the climbing speed set by the driver. Then, the vehicle's maximum torque requirement can be predicted based on the distance, gradient, and climbing speed.

[0074] Step S142: Determine the target power generation value of the range extender based on the vehicle's maximum torque demand value.

[0075] Step S143: Adjust the range extender's power output value to the target power output value based on the target power output value.

[0076] It should be understood that by dynamically determining the target power output of the range extender based on the vehicle's maximum torque demand, the actual power demand of the vehicle can be matched more accurately, avoiding excessively high or low power output from the range extender. This reduces unnecessary power output while ensuring the vehicle's acceleration performance, helps reduce operating noise and vibration of the range extender, and further optimizes the NVH performance of the entire vehicle.

[0077] In an exemplary embodiment of this application, the method for adjusting the power generation value of the range extender based on the target power generation value includes steps S1411 to S1413, which are described in detail below:

[0078] Step S1411: Calculate the power difference between the current power output of the range extender and the target power output.

[0079] Step S1412: Determine the power change rate of the range extender based on the power difference.

[0080] For example, the power change rate of the range extender can be determined based on the power difference-change rate mapping table stored in the control device 300 of the vehicle range extender.

[0081] Step S1413: Adjust the power output of the range extender based on the rate of power change.

[0082] It should be understood that by calculating the difference between the current power output of the range extender and the target power output, and determining the power change rate of the range extender based on this difference, the power output can be smoothly adjusted, avoiding vehicle vibration and noise caused by a sudden increase or decrease in power, and effectively improving the smoothness of vehicle driving and NVH performance.

[0083] In an exemplary embodiment of this application, if it is determined that the change in accelerator pedal opening value is greater than a preset opening value within a preset time period, the method for adjusting the power generation value of the range extender includes steps S144 to S145, which are described in detail below:

[0084] Step S144: If it is determined that the change value of the accelerator pedal opening is greater than the preset opening value within a preset time period, and it is determined that the vehicle is in a deceleration state, then obtain the deceleration rate of the vehicle within the preset time period.

[0085] For example, the deceleration rate (e.g., -2 m / s²) can be calculated using wheel speed sensors or an IMU (inertial measurement unit).

[0086] Step S145: Adjust the generator power value of the range extender to be less than or equal to the lower limit of the output power based on the deceleration rate.

[0087] For example, a pre-calibrated deceleration rate-power mapping table can be consulted to determine the lower limit of the output power. Then, the range extender can be controlled to gradually reduce the generating power to that value.

[0088] It should be understood that by adjusting the range extender's power output to be less than or equal to the lower limit of the output power based on the deceleration rate, the load on the range extender can be smoothly unloaded, the speed can be smoothly reduced, and the torque change of the entire power system is continuous. This avoids a strong sense of jerking or "nodding" effect during the unloading of the range extender's load, and ultimately improves the vehicle's NVH performance.

[0089] For example, the lower limit of output power can be 0. In this case, the generator power of the range extender is adjusted so that the generator power equals the lower limit of output power. Alternatively, the lower limit of output power can also be greater than 0.

[0090] Step S150: Control the range extender to generate electricity based on the adjusted power output value of the range extender.

[0091] In summary, the vehicle range extender control method of this application limits the range extender power to the upper limit of output power when the battery is sufficient (i.e., the remaining battery value is greater than the battery threshold), thereby ensuring a good NVH foundation for the vehicle during driving. Once the vehicle's accelerator pedal opening change value exceeds the preset opening value within a preset time period (i.e., during rapid acceleration / deceleration), the limitation that the range extender's power generation value is less than or equal to the upper limit of output power is immediately and dynamically lifted. This allows the power to be rapidly increased to the maximum or output according to torque demand during rapid acceleration, ensuring power performance; and the power is rapidly reduced during rapid deceleration to eliminate interference from the range extender's power generation and optimize braking smoothness.

[0092] Another aspect of this application provides a control device 300 for a vehicle range extender, combined with Figure 6 The diagram shown is a structural schematic of a control device for a vehicle range extender provided in an embodiment of this application. The control device 300 for the vehicle range extender includes: an acquisition module 310, a determination module 320, a limiting module 330, an adjustment module 340, and a control module 350.

[0093] The acquisition module 310 is used to acquire road condition information of the current driving segment of the vehicle, the current speed of the vehicle, the change value of the accelerator pedal opening of the vehicle, and the average speed of the vehicle.

[0094] The determining module 320 is used to adjust and determine the power generation value of the vehicle's range extender based on the road condition information, the current vehicle speed value, and the average vehicle speed value.

[0095] The limiting module 330 is used to limit the power generation value of the range extender to be less than or equal to the upper limit of the output power if it is determined that the change value of the accelerator pedal opening is less than or equal to a preset opening value, wherein the upper limit of the output power is less than the maximum power generation value of the range extender.

[0096] If the adjustment module 340 determines that the change in accelerator pedal opening is greater than a preset opening value and that the vehicle is in an acceleration state, then the adjustment module 340 adjusts the power generation value of the range extender to be greater than the upper limit of the output power; if the adjustment module 340 determines that the change in accelerator pedal opening is greater than a preset opening value and that the vehicle is in a deceleration state, then the adjustment module 340 adjusts the power generation value of the range extender to be less than or equal to the lower limit of the output power, wherein the lower limit of the output power is less than the upper limit of the output power.

[0097] The control module 350 is used to control the range extender to generate electricity based on the adjusted power output value of the range extender.

[0098] Another aspect of this application provides an electronic device. (See also...) Figure 7 As shown, it illustrates a schematic diagram of a computer system suitable for implementing the electronic device of the present application. The specific embodiments of the present application do not limit the specific implementation of the electronic device.

[0099] Please see Figure 7 As shown, the electronic device includes: a controller; and a memory for storing one or more programs, which, when executed by the controller, perform the aforementioned control method for the vehicle range extender. Please continue reading. Figure 7 As shown, the computer system 400 of this electronic device includes a central processing unit (CPU) 401, which can perform various appropriate actions and processes, such as executing the methods described in the above embodiments, based on a program stored in read-only memory (ROM) 402 or a program loaded from storage portion 408 into random access memory (RAM) 403. The RAM 403 also stores various programs and data required for system operation. The CPU 401, ROM 402, and RAM 403 are interconnected via a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404.

[0100] 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 409, and / or installed from removable medium 411. When the computer program is executed by CPU 401, it performs various functions defined in the system of this application.

[0101] Another aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the control method for the vehicle range extender described above. This computer-readable storage medium may be included in the electronic device described in the above embodiments, or it may exist independently and not incorporated into the electronic device.

[0102] Another aspect of this application provides a computer program product or computer program that includes at least one executable instruction that, when executed on a vehicle range extender control device 300 or electronic device, causes the vehicle range extender control device 300 or electronic device to perform the vehicle range extender control method described above.

[0103] The computer-readable medium shown in the embodiments of this application can be a computer-readable signal medium or 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, RAM, ROM, an erasable programmable read-only memory (EPROM), flash memory, optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a 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. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media can also be any computer-readable medium other than computer-readable storage media, 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.

[0104] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. Each block in a flowchart or block diagram may represent a module, segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0105] The units described in the embodiments of this application can be implemented in software or hardware, and the described units can also be located in a processor. The names of these units do not necessarily limit the specific unit itself.

[0106] According to one aspect of the embodiments of this application, a computer system is also provided, including a CPU that can perform various appropriate actions and processes according to a program stored in a ROM or a program loaded from a storage portion into a random access memory (RAM), such as performing the methods described above. Various programs and data required for system operation are also stored in the RAM. The CPU, ROM, and RAM are interconnected via a bus. An I / O interface is also connected to the bus.

[0107] The following components are connected to the I / O interface: an input section 406 including a keyboard, mouse, etc.; an output section 407 including a cathode ray tube (CRT), liquid crystal display (LCD), and speakers, etc.; a storage section including a hard disk, etc.; and a communication section including a network interface card such as a local area network (LAN) card and a modem, etc. The communication section performs communication processing via a network such as the Internet. A drive 410 is also connected to the I / O interface as needed. Removable media, such as disks, optical disks, magneto-optical disks, semiconductor memories, etc., are installed on the drive 410 as needed so that computer programs read from them can be installed into the storage section as needed.

[0108] 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 control method for a vehicle range extender, characterized in that, The control method includes: The system acquires road condition information for the current route the vehicle is traveling on, the vehicle's current speed, the change in the accelerator pedal opening, and the vehicle's average speed. The power generation value of the vehicle's range extender is determined based on the road condition information, the current vehicle speed value, and the average vehicle speed value. If it is determined that the change in the accelerator pedal opening is less than or equal to a preset opening value, then the power generation value of the range extender is limited to be less than or equal to the upper limit of the output power, and the upper limit of the output power is less than the maximum power generation value of the range extender. If it is determined that the change in accelerator pedal opening is greater than the preset opening value, and it is determined that the vehicle is in an acceleration state, then the power generation value of the range extender is adjusted to be greater than the upper limit of the output power; if it is determined that the change in accelerator pedal opening is greater than the preset opening value, and it is determined that the vehicle is in a deceleration state, then the power generation value of the range extender is adjusted to be less than or equal to the lower limit of the output power, wherein the lower limit of the output power is less than the upper limit of the output power. The range extender is controlled to generate electricity based on the adjusted power output value of the range extender.

2. The control method for a vehicle range extender according to claim 1, characterized in that, If it is determined that the change in accelerator pedal opening is greater than the preset opening value, and it is determined that the vehicle is in an acceleration state, then the power generation value of the range extender is adjusted to be greater than the upper limit of the output power, including: If it is determined that the change in accelerator pedal opening is greater than the preset opening value within a preset time period, and it is determined that the vehicle is in an acceleration state, then the maximum power generation value of the range extender is obtained. The maximum power generation value is determined as the target power generation value of the range extender; The range extender's power output is adjusted to the target power output value based on the target power output value.

3. The control method for a vehicle range extender according to claim 1, characterized in that, If it is determined that the change in accelerator pedal opening is greater than the preset opening value, and it is determined that the vehicle is in an acceleration state, then the power generation value of the range extender is adjusted to be greater than the upper limit of the output power, including: If it is determined that the change in accelerator pedal opening is greater than the preset opening value within a preset time period, and it is determined that the vehicle is in an acceleration state, then the maximum torque demand value of the vehicle is predicted. The target power generation value of the range extender is determined based on the maximum torque requirement of the vehicle. The range extender's power output is adjusted to the target power output value based on the target power output value.

4. The control method for a vehicle range extender according to claim 2 or 3, characterized in that, Adjusting the range extender's power output to the target power output value based on the target power output value includes: Calculate the power difference between the current power output of the range extender and the target power output at the current moment; The power change rate of the range extender is determined based on the power difference. The power output of the range extender is adjusted based on the power change rate.

5. The control method for a vehicle range extender according to claim 1, characterized in that, If it is determined that the change in accelerator pedal opening is greater than the preset opening value, and it is determined that the vehicle is in a deceleration state, then the power generation value of the range extender is adjusted to be less than or equal to the lower limit of the output power, including: If it is determined that the change in the accelerator pedal opening is greater than the preset opening value, and it is determined that the vehicle is in a deceleration state, then the deceleration rate of the vehicle within a preset time period is obtained. The range extender's power output is adjusted to be less than or equal to the lower limit of the output power, which is less than the upper limit of the output power, based on the deceleration rate.

6. The control method for a vehicle range extender according to claim 1, characterized in that, The method includes: The slope value of the road segment where the vehicle is located is determined based on the road condition information; The upper limit of output power is determined based on the relationship between the slope value and the slope threshold. If the slope value is greater than or equal to the slope threshold, the upper limit of output power is determined to be a first output power value. If the slope value is less than the slope threshold, the upper limit of output power is determined to be a second output power value. Wherein, the first output power value is greater than the second output power value.

7. The control method for a vehicle range extender according to claim 6, characterized in that, The power generation value of the vehicle's range extender is determined based on the road condition information, the current vehicle speed, and the average vehicle speed, including: The vehicle speed threshold is determined based on the average vehicle speed value and the preset vehicle speed redundancy value. If the current vehicle speed value is less than the vehicle speed threshold and the gradient value is less than the gradient threshold, then the power generation value of the range extender is determined based on the mapping relationship between the current vehicle speed value and the power calibration value of the range extender. If the current vehicle speed is less than the vehicle speed threshold and the gradient is greater than the gradient threshold, then the power generation value of the range extender is determined based on the mapping relationship between the current vehicle speed and the power calibration value of the range extender and the mapping relationship between the gradient and the power compensation calibration value of the range extender. If the current vehicle speed value is greater than the vehicle speed threshold and the gradient value is greater than the gradient threshold, then the power generation value of the range extender is determined to be the first output power value. If the current vehicle speed is greater than the vehicle speed threshold and the gradient is less than the gradient threshold, then the power generation value of the range extender is determined to be the second output power value.

8. A control device for a vehicle range extender, characterized in that, include: The acquisition module is used to acquire road condition information of the current driving segment of the vehicle, the current speed of the vehicle, the change value of the accelerator pedal opening of the vehicle, and the average speed of the vehicle. The determination module is used to adjust and determine the power generation value of the vehicle's range extender based on the road condition information, the current vehicle speed value, and the average vehicle speed value. The limiting module is used to limit the power generation value of the range extender to be less than or equal to the upper limit of the output power if it is determined that the change value of the accelerator pedal opening is less than or equal to a preset opening value, wherein the upper limit of the output power is less than the maximum power generation value of the range extender. If the adjustment module determines that the change in the accelerator pedal opening is greater than the preset opening value, and determines that the vehicle is in an acceleration state, then it adjusts the power generation value of the range extender to be greater than the upper limit of the output power. If it is determined that the change in the accelerator pedal opening is greater than the preset opening value, and it is determined that the vehicle is in a deceleration state, then the power generation value of the range extender is adjusted to be less than or equal to the lower limit of the output power, and the lower limit of the output power is less than the upper limit of the output power. The control module is used to control the range extender to generate electricity based on the adjusted power output value of the range extender.

9. A vehicle, characterized in that, include: Controller; A memory for storing one or more programs, which, when executed by a controller, cause the controller to implement the control method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, which includes at least one executable instruction that, when executed on the control device / vehicle of the vehicle range extender, causes the control device / vehicle of the vehicle range extender to perform the operation of the control method of the vehicle range extender as described in any one of claims 1 to 7.

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