A method, device, equipment and medium for controlling a range extender based on a multi-slope section road

Abstract

The application relates to the technical field of range extender control, and discloses a range extender control method, device, equipment and medium based on a multi-slope-section road, which comprises the following steps: when a vehicle travels to a multi-slope-section road, if the vehicle generates power in a current slope section, the power generation power curve corresponding to the vehicle in the current slope section is acquired, and the current average slope of the current slope section is acquired; the average power generation power of the current slope section is determined based on the power generation power curve, the highest power generation power corresponding to the range extender of the vehicle is determined according to the current NVH standard of the vehicle, and the time length ratio at which the power generation power of the power generation power curve exceeds the highest power generation power is determined; if the slope difference between the average slope of the next slope section and the current average slope is less than a preset slope value, the time length ratio exceeds a preset time length ratio, and the average power generation power is less than or equal to the highest power generation power, the range extender is controlled to generate power at the average power generation power in the next slope section. Therefore, the NVH performance of the vehicle can be improved on the basis of achieving good power preservation effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of range extender control, and particularly relates to a range extender control method and device based on a multi-slope-section road, equipment and a medium. BACKGROUND

[0002] New energy vehicles are increasingly widely used in people's daily life. A range-extended new energy vehicle can generate electricity through a range extender to directly drive a motor or store the generated electricity in a battery pack. Therefore, the control of the range extender directly determines the performance of the range-extended vehicle.

[0003] When a vehicle is driving on a continuous slope, if the range extender generates electricity, the vehicle is likely to have a large power generation, which may cause poor NVH (Noise, Vibration, Harshness) performance of the vehicle, thereby reducing the driving experience of the driver and passengers. SUMMARY

[0004] In view of the above problems, the present application provides a range extender control method and device based on a multi-slope-section road, equipment and a medium. The relationship between the average power generation of the current slope section and the maximum power generation corresponding to the current NVH standard is determined, as well as the slope relationship between the current slope section and the next slope section. When these relationships meet certain conditions, the average power generation of the current slope section is used as the power generation of the next slope section, which can improve the NVH performance of the vehicle on the basis of achieving good power preservation effect.

[0005] The first aspect of the present application provides a range extender control method based on a multi-slope-section road. The range extender control method comprises: when a vehicle is driving on a multi-slope-section road, if the vehicle generates electricity in a current slope section, obtaining a power generation curve corresponding to the current slope section, and obtaining a current average slope of the current slope section. The multi-slope-section road comprises a plurality of slope sections, and the distance between any two adjacent slope sections is less than a preset distance. The average power generation of the current slope section is determined based on the power generation curve, and the maximum power generation corresponding to the range extender of the vehicle is determined according to the current NVH standard of the vehicle. The time length ratio of the time length during which the power generation corresponding to the power generation curve exceeds the maximum power generation is determined. If the slope difference between the average slope of the next slope section and the current average slope is less than a preset slope value, and the time length ratio exceeds a preset time length ratio, and the average power generation is less than or equal to the maximum power generation, the range extender is controlled to generate electricity at the average power generation in the next slope section.

[0006] In some embodiments, after the step of determining the average power generation of the current slope section based on the power generation curve, determining the maximum power generation corresponding to the range extender of the vehicle according to the current NVH standard of the vehicle, and determining the time length ratio of the power generation of the power generation curve exceeding the maximum power generation, the method further comprises: if the slope difference between the average slope of the next slope section and the current average slope is less than a preset slope value, and the time length ratio exceeds a preset time length ratio but is less than a reference time length ratio, and the average power generation is less than or equal to the maximum power generation, controlling the range extender to generate power in the next slope section without exceeding the maximum power generation; wherein the reference time length ratio is less than the preset time length ratio.

[0007] In some embodiments, after the step of determining the average power generation of the current slope section based on the power generation curve, determining the maximum power generation corresponding to the range extender of the vehicle according to the current NVH standard of the vehicle, and determining the time length ratio of the power generation of the power generation curve exceeding the maximum power generation, the method further comprises: if the time length ratio exceeds the preset time length ratio, and the average power generation is greater than the maximum power generation, and the average slope of the next slope section is greater than the average slope of the current slope section and the slope difference between the two is less than a preset slope value, lowering the current NVH standard to obtain a target NVH standard; wherein the target NVH standard is higher than a reference NVH standard; determining a corrected maximum power generation under the target NVH standard, and controlling the range extender to generate power at the average power generation in the next slope section when the average power generation is less than or equal to the corrected maximum power generation.

[0008] In some embodiments, before the step of lowering the current NVH standard to obtain the target NVH standard, the method further comprises: predicting the in-vehicle noise data and the out-vehicle noise data of the next slope section; and the step of lowering the current NVH standard to obtain the target NVH standard comprises: determining the degree of NVH standard reduction based on the in-vehicle noise data and the out-vehicle noise data, and lowering the current NVH standard to obtain the target NVH standard based on the degree of reduction.

[0009] In some embodiments, after the step of determining the average power generation of the current slope section based on the power generation curve, determining the maximum power generation corresponding to the range extender of the vehicle according to the current NVH standard of the vehicle, and determining the time length ratio of the power generation of the power generation curve exceeding the maximum power generation, the method further comprises: if the time length ratio exceeds the preset time length ratio, and the average power generation is greater than the maximum power generation, and the average slope of the next slope section is greater than the average slope of the current slope section and the slope difference between the two is less than a preset slope value, obtaining the remaining power of the vehicle after driving the current slope section; if the remaining power is greater than a preset threshold power, lowering the preset threshold power to the remaining power to control the range extender to generate power based on the preset threshold power; wherein the preset threshold power is the threshold power for the range extender to start generating power.

[0010] In some embodiments, if the vehicle generates power in the current slope section, the step of obtaining the power generation curve corresponding to the current slope section of the vehicle comprises: if the vehicle generates power in the current slope section, obtaining the power generation power of the range extender at preset time intervals to obtain a plurality of power-time-power points, and determining the power generation power curve of the range extender based on the plurality of time-power points as the power generation curve corresponding to the current slope section of the vehicle.

[0011] In some embodiments, the step of obtaining the current average slope of the current slope section comprises: obtaining navigation information of the vehicle; wherein the navigation information comprises length information and elevation information of the starting and ending points of the current slope section; and determining the average slope of the current slope section based on the length information and the elevation information.

[0012] The second aspect of the present application provides a range extender control device based on a multi-slope section road, comprising: an obtaining module, configured to, when the vehicle travels on a multi-slope section road, if the vehicle generates power in the current slope section, obtain the power generation curve corresponding to the current slope section of the vehicle, and obtain the current average slope of the current slope section; wherein the multi-slope section road comprises a plurality of slope sections, and the distance between any two adjacent slope sections is less than a preset distance; a control module, configured to determine the average power generation power of the current slope section based on the power generation curve, determine the highest power generation power corresponding to the range extender of the vehicle according to the current NVH standard of the vehicle, and determine the time length ratio of the time length during which the power generation power in the power generation curve exceeds the highest power generation power; and configured to, if the slope difference between the average slope of the next slope section and the current average slope is less than a preset slope value, the time length ratio exceeds a preset time length ratio, and the average power generation power is less than or equal to the highest power generation power, control the range extender to generate power at the average power generation power in the next slope section.

[0013] The third aspect of the present application provides an electronic device, comprising: a processor; a memory for storing a computer program, the computer program being executed by the processor to implement any of the above range extender control methods.

[0014] The fourth aspect of the present application provides a computer readable storage medium, the storage medium storing a computer program, the computer program being executed by the processor to implement any of the above range extender control methods.

[0015] The application has at least the following beneficial technical effects: based on the range extender control method, device, equipment and medium provided by the application based on the multi-slope section road, the method comprises: when the vehicle travels to the multi-slope section road, if the vehicle generates power in the current slope section, the power generation power curve corresponding to the vehicle in the current slope section is obtained, and the current average slope of the current slope section is obtained; wherein the multi-slope section road comprises a plurality of slope sections, and the distance between the adjacent two slope sections is greater than a preset distance; the average power generation power of the current slope section is determined based on the power generation power curve, and the highest power generation power corresponding to the vehicle range extender is determined according to the current NVH standard of the vehicle, and the time length ratio of the power generation power curve corresponding to the power generation power exceeding the highest power generation power is determined; if the slope difference between the average slope of the next slope section and the current average slope is less than a preset slope value, and the time length ratio exceeds a preset time length ratio, and the average power generation power is less than or equal to the highest power generation power, the range extender is controlled to generate power in the next slope section at the average power generation power. Therefore, by determining the relationship between the average power generation power of the current slope section and the highest power generation power corresponding to the current NVH standard, and the slope relationship of the current slope section and the next slope section, and taking the average power generation power of the current slope section as the power generation power of the next slope section when these relationships meet certain conditions, the NVH performance of the vehicle can be improved on the basis of achieving good power preservation effect.

[0016] The above description is only a summary of the technical solutions of the embodiments of the application, in order to more clearly understand the technical means of the embodiments of the application, the embodiments of the application can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the embodiments of the application more obvious and easy to understand, the specific embodiments of the application are described below. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings are only used to illustrate the embodiments, and are not considered as limiting the application. Moreover, the same reference signs are used to represent the same parts throughout the drawings. In the drawings:

[0018] Figure 1 is a flowchart of an embodiment of the range extender control method based on the multi-slope section road provided by the application;

[0019] Figure 2 is a flowchart of another embodiment of the range extender control method based on the multi-slope section road provided by the application;

[0020] Figure 3 is a flowchart of another embodiment of the range extender control method based on the multi-slope section road provided by the application;

[0021] Figure 4 is a flowchart of another embodiment of the range extender control method based on the multi-slope section road provided by the application;

[0022] Figure 5 is a flowchart of another embodiment of the method for controlling a range extender based on a multi-slope section road provided by the present application;

[0023] Figure 6 is a flowchart of another embodiment of the method for controlling a range extender based on a multi-slope section road provided by the present application;

[0024] Figure 7 is a structural block diagram of an embodiment of the device for controlling a range extender based on a multi-slope section road provided by the present application;

[0025] Figure 8 is a structural block diagram of an embodiment of the electronic device provided by the present application;

[0026] Figure 9 is a structural block diagram of an embodiment of the computer readable storage medium provided by the present application. DETAILED DESCRIPTION

[0027] Exemplary embodiments of the present application will be described herein below with reference to the accompanying drawings. Although 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 by the embodiments described herein. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative labor fall within the scope of protection of the present application.

[0028] If the present application has a description of "first", "second", etc. in the embodiments, the description of "first", "second", etc. is only for the purpose of description and should not be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can implement it. When the combination of technical solutions appears contradictory or unimplementable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed by the present application.

[0029] The first aspect of the present application provides a method for controlling a range extender based on a multi-slope section road, which is applied to a range-extender new energy vehicle. The execution end of the method can be a related controller of the vehicle. Figure 1 is a flowchart of an embodiment of the method for controlling a range extender based on a multi-slope section road provided by the present application, combined with Figure 1 The method includes the following steps:

[0030] S101: When the vehicle travels to a multi-slope section road, if the vehicle generates electricity in the current slope section, the electricity generation power curve corresponding to the vehicle in the current slope section is obtained, and the current average slope of the current slope section is obtained; wherein the multi-slope section road includes multiple slope sections, and the distance between adjacent two slope sections is less than a preset distance.

[0031] It should be understood that the multi-slope section road is composed of multiple slope sections, and the slope section referred to in this embodiment is an uphill section, that is, the overall slope is greater than a certain slope value, which can be 5°. The adjacent two slope sections can be connected by a flat road, or can be directly connected, at this time the distance between the adjacent two slope sections is less than the preset distance. The preset distance can be set to be small, so that the distance between the adjacent two slope sections is close, for example, the preset distance can be 100 meters. The division method of the slope section in the multi-slope section road can be set in advance according to actual needs, for example, it can be divided according to length, slope, uphill ratio and other factors. For example, the multi-slope section road can be divided into multiple slope sections with the same length, or the multi-slope section road can be divided into multiple slope sections with different average slopes, or the road with an uphill ratio greater than a certain ratio value can be divided into a slope section. In some application scenarios, the road with an uphill ratio greater than a certain ratio value can be divided into a slope section, and the lengths of all slope sections are the same.

[0032] The extended range vehicle sets a preset threshold power, and the vehicle automatically generates electricity when the remaining power is lower than the preset threshold power, thereby supplementing the power of the vehicle. The preset threshold power can be set according to the specific model of the vehicle, the vehicle mode and other factors, for example, the preset threshold power can be set to 20%, 30% and the like, which is not limited here. The vehicle generates electricity when the remaining power in the current slope section is lower than the preset threshold power, at this time the electricity generation power of the range extender is affected by multiple factors, and is mainly affected by the power demand of the vehicle, at this time the electricity generation power of the range extender changes with time. This embodiment obtains the electricity generation power curve corresponding to the vehicle in the current slope section, and the electricity generation power curve corresponding to the current slope section is the electricity generation power curve corresponding to the entire electricity generation process of the vehicle in the current slope section, which reflects the corresponding relationship between the electricity generation power of the range extender and time.

[0033] S102: Determine the average electricity generation power of the current slope section based on the electricity generation power curve, and determine the highest electricity generation power corresponding to the range extender of the vehicle according to the current NVH standard of the vehicle, and determine the time length ratio at which the electricity generation power corresponding to the electricity generation power curve exceeds the highest electricity generation power.

[0034] After obtaining the electricity generation power curve, the value of the electricity generation power at each time point in the entire electricity generation period of the current slope section can be obtained, and then the average electricity generation power of the entire electricity generation period of the current slope section can be obtained, that is, the average electricity generation power of the current slope section.

[0035] It should be understood that the NVH performance of the vehicle affects the driving experience of the driver and passenger, and the better the NVH performance, the better the corresponding driving experience. Vibration, noise and the like will be generated during the operation of the range extender, which will affect the NVH performance of the vehicle. Generally speaking, the higher the power of the range extender, the worse the NVH performance of the corresponding vehicle. The vehicle generally sets some NVH standards, and generally corresponds to the highest power generation of the range extender under the set NVH standard. The corresponding relationship between the NVH standard and the highest power generation can be set in advance according to actual needs. At this time, if the power generation of the range extender exceeds the highest power generation, it is likely that the NVH performance of the vehicle will not meet the set NVH standard. Among the multiple NVH standards set by the vehicle, the vehicle can select an NVH standard as the current NVH standard according to actual needs, and at this time the highest power generation of the range extender of the vehicle can be determined according to the current NVH standard.

[0036] In some application scenarios, the NVH standard can be presented in the form of an NVH level, and the NVH level is related to the driving mode of the vehicle. For example, according to the comfortable / sporty driving mode of the vehicle, the current NVH level is set as the current NVH standard, and under the current NVH standard, the corresponding noise value N_max does not exceed 55dB and the vibration RMS value V_max does not exceed 0.8m / s².

[0037] In combination with the above content, it can be known that the power generation curve reflects the corresponding relationship between the power generation and the time, and at this time the time length ratio during which the power generation exceeds the highest power generation can be known according to the curve. When the power generation exceeds the highest power generation, the NVH performance of the vehicle is poor, and the time length ratio is regarded as the time length ratio during which the vehicle NVH performance does not meet the current slope power generation period in this embodiment.

[0038] S103: If the slope difference between the average slope of the next slope section and the current average slope is less than the preset slope value, and the time length ratio exceeds the preset time length ratio, and the average power generation is less than or equal to the highest power generation, control the range extender to generate power at the average power generation in the next slope section.

[0039] It should be understood that the preset slope value can be set according to actual needs, and the preset slope value can be a small value, for example, the preset slope value can be 3°, 5°, etc. If the slope difference between the average slope of the next slope section and the current average slope is less than the preset slope value, it means that the slope difference between the next slope section and the current slope section is small. The preset time length ratio can be set according to actual needs, and the preset time length ratio can be a large time length ratio, for example, it can be set to 60%. When the time length ratio exceeds the preset time length ratio, it means that the NVH performance of the vehicle in the power generation process of the current slope section is poor. The distance between the current slope section and the next slope section is close, and based on the driving habit of the driver, the vehicle speed of the vehicle in the two slope sections is generally close, and the slope difference between the two slope sections is small. Since the power generation power of the range extender is mainly affected by the vehicle speed and the slope when the vehicle is climbing, if the vehicle generates power in the next slope section at the average power generation power of the current slope section, the actual power generation power of the vehicle in the next slope section can meet the power generation power demand of the vehicle, so that the power generation of the range extender can meet the power demand of the vehicle, thereby ensuring the power protection performance of the vehicle. Moreover, since the average power generation power is less than the maximum power generation power, when the range extender generates power at the average power generation power, the vehicle generally has good NVH performance and meets the current NVH standard of the vehicle.

[0040] In some application scenarios, the time length ratio of the power generation power P （t） in the power generation power curve, which is greater than P _max , is T _ratio , and the preset time length ratio is T _threshold . The difference Δθ between the average slope θ _next of the next slope section and the average slope θ _current of the current slope section is Δθ = θ _next - θ _current . The preset slope value is Δθ _threshold , the average power generation power is P _avg , and the maximum power generation power is P _max . Then, if Δθ < Δθ _threshold , T _ratio > T _threshold , and P _avg ≤ P _max , the range extender generates power at the average power generation power P _avg in the next slope section.

[0041] In summary, by determining the relationship between the average power generation power of the current slope section and the maximum power generation power corresponding to the current NVH standard, and the slope relationship between the current slope section and the next slope section, and setting the average power generation power of the current slope section as the power generation power of the next slope section when these relationships meet certain conditions, the NVH performance of the vehicle can be improved on the basis of achieving good power protection effect.

[0042] Figure 2is a flowchart of another embodiment of the range extender control method based on a multi-slope-section road provided by the present application.

[0043] In combination Figure 2 In some specific embodiments, after the step of determining the average power generation of the current slope section based on the power generation curve, and determining the maximum power generation of the vehicle range extender according to the current NVH standard of the vehicle, and determining the time length ratio of the power generation of the power generation curve exceeding the maximum power generation, i.e., after the above step S102, the method further comprises:

[0044] S201: If the slope difference between the average slope of the next slope section and the current average slope is less than the preset slope value, and the time length ratio does not exceed the preset time length ratio but exceeds the reference time length ratio, and the average power generation is less than or equal to the maximum power generation, then controlling the power generation of the range extender in the next slope section not to exceed the maximum power generation; wherein the reference time length ratio is less than the preset time length ratio.

[0045] It should be understood that if the slope difference between the average slope of the next slope section and the current average slope is less than the preset slope value, it means that the slope of the next slope section is relatively close to the slope of the current slope section. The reference time length ratio can be set according to actual needs, and the reference time length ratio is less than the preset time length ratio. In combination with the above setting example of the preset time length ratio, the reference time length ratio can be set to 35% at this time, but it is not limited thereto. At this time, the time length ratio does not exceed the preset time length ratio but exceeds the reference time length ratio, which means that the time length ratio is not large but not small, and the NVH performance of the vehicle is not too bad but not too good when the vehicle generates power in the current slope section. The average power generation is less than or equal to the maximum power generation, which means that the overall power generation is not high, and the overall NVH performance of the vehicle is good when the range extender generates power in the current slope section.

[0046] In summary, since the time length ratio does not exceed the preset time length ratio, and the average power generation is less than or equal to the maximum power generation, the NVH performance when generating power in the current slope section is generally good. However, since the time length ratio exceeds the reference time length ratio, there is a situation that the power generation is higher than the maximum power generation. The slope of the next slope section is similar to that of the current slope section, and the speed generally does not change greatly, so no special attention is needed for the next slope section. It is only necessary to control the power generation of the range extender in the next slope section not to exceed the maximum power generation, so that the vehicle can achieve good NVH performance.

[0047] Figure 3 is a flowchart of another embodiment of the range extender control method based on a multi-slope-section road provided by the present application.

[0048] In combination Figure 3In some specific embodiments, after the step of determining the average power generation of the current slope section based on the power generation curve, and determining the maximum power generation corresponding to the vehicle range extender according to the current NVH standard of the vehicle, and determining the time length ratio of the time length during which the power generation corresponding to the power generation curve exceeds the maximum power generation, i.e., after the above step S102, the method comprises:

[0049] S301: If the time length ratio exceeds the preset time length ratio, and the average power generation is greater than the maximum power generation, and the average slope of the next slope section is greater than the average slope of the current slope section and the slope difference between the two is less than a preset slope value, then the current NVH standard is reduced to obtain a target NVH standard; wherein the target NVH standard is higher than the baseline NVH standard.

[0050] In combination with the above, when the time length ratio exceeds the preset time length ratio, it indicates that the NVH performance of the vehicle in the power generation process of the current slope section is poor. Similarly, if the average power generation is greater than the maximum power generation, it indicates that the overall power generation of the vehicle in the current slope section is high, which generally leads to poor NVH performance of the vehicle. If the average slope of the next slope section is greater than the average slope of the current slope section and the slope difference between the two is less than a preset slope value, it indicates that the slope of the next slope section will be greater than that of the current slope section, and the power generation in the next slope section will only be more unsatisfactory to the current NVH standard.

[0051] The baseline NVH standard is set according to actual needs, and the baseline NVH standard is lower than the current NVH standard. The baseline NVH standard can be the lowest NVH standard of the vehicle in the current running scenario. Different baseline NVH standards can be established for different running scenarios of the vehicle, for example, a baseline NVH standard can be established for the climbing scenario of the vehicle. At this time, although the current NVH standard is reduced, it will not be reduced too much, and the most basic NVH standard of the vehicle in the current scenario needs to be met, i.e., the baseline NVH standard needs to be met.

[0052] S302: Determine the corrected maximum power generation under the target NVH standard, and control the range extender to generate power at the average power generation in the next slope section when the average power generation is less than or equal to the corrected maximum power generation.

[0053] It should be understood that the revised maximum power generation under the target NVH standard is higher than the maximum power generation corresponding to the current NVH standard. At this time, although the average power generation is higher than the maximum power generation, it is lower than the revised maximum power generation, so if the range extender is controlled to generate power at the average power generation in the next slope section, although the current NVH standard is not met, the target NVH standard will be met, and at this time the NVH performance of the vehicle will meet the minimum demand under the current scene. Of course, in other embodiments, if the average power generation is greater than the revised maximum power generation, the range extender cannot be controlled to generate power at the average power generation in the next slope section, the range extender can be controlled to generate power at a power generation lower than the average power generation, and the power of the related accessories of the vehicle can be reduced, thereby ensuring the power protection performance of the vehicle.

[0054] Figure 4 is a flowchart of another embodiment of the range extender control method based on a multi-slope section road provided by the present application.

[0055] In combination with Figure 4 In combination with the related content of the above embodiments, in some specific embodiments, before the step of lowering the current NVH standard to obtain the target NVH standard, the step includes:

[0056] S401: predicting the in-vehicle noise data and the out-vehicle noise data of the next slope section.

[0057] The in-vehicle noise data of the next slope section can be predicted by the in-vehicle noise data of the current slope section, for example, directly using the in-vehicle noise data of the current slope section as the in-vehicle noise data of the next slope section. The out-vehicle noise data can be the environmental noise data of the vehicle driving environment, and when the vehicle is in a rainy environment, the out-vehicle noise data is mainly related to the noise data generated by the raindrops falling on the vehicle.

[0058] The step of lowering the current NVH standard to obtain the target NVH standard includes:

[0059] S402: determining the NVH standard reduction degree based on the in-vehicle noise data and the out-vehicle noise data, and lowering the current NVH standard to obtain the target NVH standard based on the reduction degree.

[0060] It should be understood that when the in-vehicle noise is large or the out-vehicle noise is large, the user's perception of the NVH performance at this time is reduced, and lowering the NVH standard of the vehicle at this time will not affect the driving experience. At this time, when the NVH standard reduction degree is determined based on the in-vehicle noise data and the out-vehicle noise data, the greater the in-vehicle noise determined by the in-vehicle noise data or the greater the out-vehicle noise determined by the out-vehicle noise data, the greater the NVH standard reduction degree can be set, and at this time the target NVH standard obtained by lowering the current NVH standard based on the reduction degree is lower.

[0061] Figure 5 is a flowchart of another embodiment of the method for controlling the range extender based on the multi-slope road provided by the present application.

[0062] In combination with the above, if the time length ratio exceeds the preset time length ratio, it means that the NVH performance of the vehicle is poor during the power generation process on the current slope section. Similarly, if the average power generation is greater than the maximum power generation, it means that the overall power generation of the vehicle on the current slope section is high, which generally leads to poor NVH performance of the vehicle. If the average slope of the next slope section is greater than the average slope of the current slope section and the slope difference between the two is less than the preset slope value, it means that the slope of the next slope section will be greater than that of the current slope section, although not much, but the vehicle will need higher power to generate electricity on the next slope section. Figure 5 In some specific embodiments, the average power generation of the current slope section is determined based on the power generation curve, and the maximum power generation corresponding to the vehicle range extender is determined according to the current NVH standard of the vehicle, and the time length ratio of the power generation curve exceeding the maximum power generation is determined. After the above step S102, the method comprises the following steps:

[0063] S501: If the time length ratio exceeds the preset time length ratio, and the average power generation is greater than the maximum power generation, and the average slope of the next slope section is greater than the average slope of the current slope section and the slope difference between the two is less than the preset slope value, the remaining power of the vehicle after driving through the current slope section is obtained.

[0064] In combination with the above, if the time length ratio exceeds the preset time length ratio, it means that the NVH performance of the vehicle is poor during the power generation process on the current slope section. Similarly, if the average power generation is greater than the maximum power generation, it means that the overall power generation of the vehicle on the current slope section is high, which generally leads to poor NVH performance of the vehicle. If the average slope of the next slope section is greater than the average slope of the current slope section and the slope difference between the two is less than the preset slope value, it means that the slope of the next slope section will be greater than that of the current slope section, although not much, but the vehicle will need higher power to generate electricity on the next slope section.

[0065] In the above scenario, the above embodiment will reduce the current NVH standard, and this embodiment will obtain the remaining power of the vehicle after driving through the current slope section.

[0066] S502: If the remaining power is greater than the preset threshold power, the preset threshold power is reduced to the remaining power to control the range extender to generate power based on the preset threshold power; wherein the preset threshold power is the threshold power for the range extender to start power generation.

[0067] If the remaining power is greater than the preset threshold power, it means that the vehicle may not immediately generate power after driving through the current slope section. However, in combination with the above, if the vehicle drives to the next slope section to generate power, the overall power generation of the vehicle is high. Among them, the power generation of the vehicle is affected by the remaining power to some extent, and when the power of the vehicle is low, in order to ensure the power preservation performance of the vehicle, the power generation of the vehicle may be higher. Therefore, this embodiment reduces the preset threshold power to the remaining power to control the range extender to generate power based on the preset threshold power, so that the vehicle immediately generates power to generate power earlier, so that the remaining power of the vehicle on the next slope section is not too low, and thus the power generation of the vehicle on the next slope section is not too high to ensure that the NVH performance of the vehicle is good.

[0068] In some embodiments, if the vehicle generates power in the current slope section, the step of obtaining the power generation curve corresponding to the current slope section of the vehicle comprises:

[0069] If the vehicle generates power in the current slope section, the power generation of the range extender is obtained at a preset time interval to obtain a plurality of power-time points, and the power generation curve of the range extender is determined based on the plurality of time-power points as the power generation curve corresponding to the current slope section of the vehicle.

[0070] This embodiment defines specific steps for obtaining the power generation curve, wherein the preset time interval is set according to actual needs in advance, and the preset time interval can be a small time interval, for example, 5s, 10s, etc., without specific limitation. At this time, more time-power points can be obtained in the entire power generation period of the current slope section, and a smooth power generation curve can be obtained based on these time-power points based on a specific method (for example, interpolation method), with time as the horizontal coordinate and power generation as the vertical coordinate.

[0071] Figure 6 is a flowchart of another embodiment of the range extender control method based on a multi-slope section road provided by the present application.

[0072] Conclusion Figure 6 In some embodiments, the step of obtaining the current average slope of the current slope section comprises:

[0073] S601: Obtain navigation information of the vehicle; wherein the navigation information comprises length information of the current slope section and elevation information of the start and end points.

[0074] Specifically, the navigation information of the vehicle can be directly obtained from the Internet, and the length information of the current slope section and the elevation information of the start and end points in the navigation information indicate the length of the current slope section and the elevations of the start and end points.

[0075] S602: Determine the average slope of the current slope section based on the length information and the elevation information.

[0076] At this time, based on the elevations of the start and end points of the current slope section and the length of the current slope section, the average slope of the current slope section can be directly calculated.

[0077] The second aspect of the present application provides a range extender control device 10 based on a multi-slope section road, Figure 7 is a structure block diagram of an embodiment of the range extender control device 10 based on a multi-slope section road provided by the present application.

[0078] Combined Figure 7The range extender control device 10 based on the multi-slope section road comprises: an acquisition module 11, configured to acquire a power generation curve corresponding to a current slope section of a vehicle when the vehicle generates power in the current slope section, and acquire a current average slope of the current slope section when the vehicle travels on a multi-slope section road; wherein the multi-slope section road comprises a plurality of slope sections, and the interval between any two adjacent slope sections is greater than a preset interval; a control module 12, configured to determine an average power generation of the current slope section based on the power generation curve, determine a maximum power generation of a range extender of the vehicle according to a current NVH standard of the vehicle, and determine a time length ratio of the power generation curve in which the power generation is greater than the maximum power generation; and configured to control the range extender to generate power at the average power generation in a next slope section if the slope difference between the average slope of the next slope section and the current average slope is less than a preset slope value, the time length ratio is greater than a preset time length ratio, and the average power generation is less than or equal to the maximum power generation. For the specific execution manners of the acquisition module 11 and the control module 12 for the above steps, refer to the specific contents of the above embodiments, and details are not repeated.

[0079] The third aspect of the present application provides an electronic device, comprising: a processor; a memory for storing a computer program, the computer program being executed by the processor to implement the range extender control method in any of the above embodiments.

[0080] Figure 8 is an embodiment of the structural framework of the electronic device 500 provided by the present application.

[0081] In combination with Figure 8 In some embodiments, the electronic device 500 comprises a central processing unit (CPU) 501 and a read-only memory (ROM) 502. The central processing unit 501 is the processor, and the read-only memory (ROM) 502 is the memory. The central processing unit 501 can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 502 or the program loaded from the storage part 508 to the random access memory (RAM) 503, such as executing the method in the above embodiments. In the RAM 503, various programs and data required for system operation are also stored. The CPU 501, the ROM 502, and the RAM 503 are connected to each other through a bus 504. An input / output (I / O) interface 505 is also connected to the bus 504.

[0082] The following components are connected to the I / O interface 505: an input section 506 including input devices such as a keyboard and mouse; an output section 507 including output devices such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and a speaker; a storage section 508 including a hard disk; and a communication section 509 including a network interface card such as a LAN (Local Area Network) card, a modem, and the like. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to the I / O interface 505 as necessary. A removable recording medium 511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, and the like is attached to the drive 510 as necessary, so that a computer program read therefrom is installed into the storage section 508 as necessary.

[0083] In particular, according to embodiments of the present application, the processes described above with reference to the flowcharts can be implemented as a computer software program. For example, embodiments of the present application include a computer program product comprising a computer program carried on a computer readable medium, the computer program containing a computer program for executing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via the communication section 509, and / or installed from the removable recording medium 511. When the computer program is executed by the central processing unit (CPU) 501, various functions defined in the system of the present application are executed.

[0084] The third aspect of the present application provides a computer readable storage medium 40, Figure 9 is a structural framework diagram of an embodiment of the computer readable storage medium 40 provided by the present application.

[0085] In combination Figure 9 The computer readable storage medium 40 stores a computer program 41, and the computer program 41 is executed by a processor to implement the range extender control method in any of the above embodiments.

[0086] It should be noted that the computer readable medium 40 shown in the embodiments of the present application can be a computer readable signal medium or a computer readable storage medium or any combination thereof. The computer readable storage medium can be, for example, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or any suitable combination thereof. More specific examples of the computer readable storage medium can include, but are not limited to, an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an 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 the present application, the computer readable storage medium can be any tangible medium that contains or stores a program used by or in connection with an instruction execution system, apparatus or device. In the present application, the computer readable signal medium can include a data signal carried in a baseband or as part of a carrier wave, in which the computer readable program is carried. Such a propagated data signal can take any of a variety of forms, including but not limited to electro-magnetic, optical, or any suitable combination thereof. The computer readable signal medium can also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate or transport a program for use by or in connection with an instruction execution system, apparatus or device. The computer program contained in the computer readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, or any suitable combination thereof.

[0087] In summary, based on the range extender control method, device, equipment and medium based on the multi-slope section road provided in the present application, the method comprises: when the vehicle travels to the multi-slope section road, if the vehicle generates power in the current slope section, the power generation power curve corresponding to the vehicle in the current slope section is obtained, and the current average slope of the current slope section is obtained; wherein the multi-slope section road comprises a plurality of slope sections, and the distance between the adjacent two slope sections is greater than a preset distance; the average power generation power of the current slope section is determined based on the power generation power curve, and the highest power generation power corresponding to the vehicle range extender is determined according to the current NVH standard of the vehicle, and the time length ratio of the power generation power curve corresponding to the power generation power exceeding the highest power generation power is determined; if the slope difference between the average slope of the next slope section and the current average slope is less than a preset slope value, and the time length ratio exceeds a preset time length ratio, and the average power generation power is less than or equal to the highest power generation power, the range extender is controlled to generate power in the next slope section at the average power generation power. Therefore, by determining the relationship between the average power generation power of the current slope section and the highest power generation power corresponding to the current NVH standard, as well as the slope relationship of the current slope section and the next slope section, and taking the average power generation power of the current slope section as the power generation power of the next slope section when these relationships meet certain conditions, the NVH performance of the vehicle can be improved on the basis of achieving good power preservation effect.

[0088] The above is only a preferred exemplary embodiment of the present application, and is not intended to limit the implementation of the present application. Those skilled in the art can easily make corresponding modifications or modifications according to the main idea and spirit of the present application, and therefore the protection scope of the present application should be subject to the protection scope required by the claims.

Claims

1. A method for controlling a range extender based on a multi-slope section road, characterized in that, The range extender control method comprises: When the vehicle travels on a multi-slope section road, if the vehicle generates power in a current slope section, a power generation power curve corresponding to the vehicle in the current slope section is obtained, and a current average slope of the current slope section is obtained; the multi-slope section road comprises a plurality of slope sections, the slope section is an uphill section, and a distance between two adjacent slope sections is less than a preset distance; Based on the power generation power curve, an average power generation power of the current slope section is determined, a highest power generation power corresponding to the vehicle range extender is determined according to a current NVH standard of the vehicle, and a time length ratio that the power generation power corresponding to the power generation power curve exceeds the highest power generation power is determined; If a slope difference between an average slope of a next slope section and the current average slope is less than a preset slope value, the time length ratio exceeds a preset time length ratio, and the average power generation power is less than or equal to the highest power generation power, the range extender is controlled to generate power at the average power generation power in the next slope section.

2. The range extender control method according to claim 1, wherein after the step of determining the average power generation power of the current slope section based on the power generation power curve, determining the highest power generation power corresponding to the vehicle range extender according to the current NVH standard of the vehicle, and determining the time length ratio that the power generation power corresponding to the power generation power curve exceeds the highest power generation power, the method comprises: If the slope difference between the average slope of the next slope section and the current average slope is less than the preset slope value, the time length ratio does not exceed the preset time length ratio but exceeds a reference time length ratio, and the average power generation power is less than or equal to the highest power generation power, the range extender is controlled to generate power not exceeding the highest power generation power in the next slope section; the reference time length ratio is less than the preset time length ratio.

3. The range extender control method according to claim 1, wherein after the step of determining the average power generation power of the current slope section based on the power generation power curve, determining the highest power generation power corresponding to the vehicle range extender according to the current NVH standard of the vehicle, and determining the time length ratio that the power generation power corresponding to the power generation power curve exceeds the highest power generation power, the method comprises: If the time length ratio exceeds the preset time length ratio, the average power generation power is greater than the highest power generation power, and the average slope of the next slope section is greater than the average slope of the current slope section and the slope difference between the two is less than a preset slope value, a target NVH standard is obtained by reducing the current NVH standard; the target NVH standard is higher than a reference NVH standard; A corrected highest power generation power under the target NVH standard is determined, and when the average power generation power is less than or equal to the corrected highest power generation power, the range extender is controlled to generate power at the average power generation power in the next slope section.

4. The range extender control method according to claim 3, wherein before the step of obtaining the target NVH standard by reducing the current NVH standard, the method comprises: Predicting in-vehicle noise data and external noise data of the next slope section; ​ ​ ​ The step of lowering the current NVH standard to obtain a target NVH standard comprises: Determining a degree of lowering of the NVH standard based on the in-vehicle noise data and the off-vehicle noise data, and lowering the current NVH standard to obtain a target NVH standard based on the degree of lowering.

5. The range extender control method of claim 1, wherein, after the step of determining the average power generation of the current slope section based on the power generation curve and determining the maximum power generation of the range extender of the vehicle based on the current NVH standard of the vehicle and determining the time length ratio of the power generation curve corresponding to the power generation exceeding the maximum power generation, the method comprises: if the time length ratio exceeds the preset time length ratio, and the average power generation is greater than the maximum power generation, and the average slope of the next slope section is greater than the average slope of the current slope section and the slope difference between the two is less than a preset slope value, obtaining the remaining power of the vehicle after the vehicle travels through the current slope section; if the remaining power is greater than a preset threshold power, lowering the preset threshold power to the remaining power to control the range extender to generate power based on the preset threshold power; wherein the preset threshold power is the threshold power for the range extender to start generating power.

6. The range extender control method of claim 1, wherein, if the vehicle generates power in the current slope section, the step of obtaining the power generation curve corresponding to the current slope section of the vehicle comprises: if the vehicle generates power in the current slope section, obtaining the power generation of the range extender at a preset time interval to obtain a plurality of power-time points, and determining the power generation curve of the range extender based on the plurality of power-time points as the power generation curve corresponding to the current slope section of the vehicle.

7. The range extender control method of claim 1, wherein, the step of obtaining the current average slope of the current slope section comprises: obtaining navigation information of the vehicle; wherein the navigation information comprises length information of the current slope section and elevation information of the start and end points; determining the average slope of the current slope section based on the length information and the elevation information. comprises: an obtaining module, configured to, when the vehicle travels on a multi-slope section road, if the vehicle generates power in the current slope section, obtain the power generation curve corresponding to the current slope section of the vehicle, and obtain the current average slope of the current slope section; wherein the multi-slope section road comprises a plurality of slope sections, the slope section is an uphill section, and the distance between adjacent two slope sections is less than a preset distance. ​ 8. A range extender control device based on a multi-slope section road, characterized by, ​ ​ A control module is configured to determine an average power generation of the current slope section based on the power generation curve, determine a maximum power generation corresponding to the vehicle range extender based on a current NVH standard of the vehicle, and determine a time length ratio of the power generation curve in which the power generation exceeds the maximum power generation; and configured to control the range extender to generate power at the average power generation in a next slope section if a slope difference between an average slope of the next slope section and the current average slope is less than a preset slope value, the time length ratio exceeds a preset time length ratio, and the average power generation is less than or equal to the maximum power generation.

9. An electronic device, comprising: The application relates to a range extender control method and a range extender control device. The application relates to a range extender control method and a range extender control device. The application relates to a range extender control method and a range extender control device.

10. A computer-readable storage medium, characterized in that, ​

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