Control Method, Device, Electronic Device and Computer Readable Storage Medium for Vehicle Range Extender

Abstract

The present application relates to the technical field of vehicle range - extender power generation, and discloses a control method, device, electronic device and computer - readable storage medium for a vehicle range - extender, including: when it is detected that the range - extender of the vehicle works and generates electricity in a historical section, obtaining the change amount of the driving power consumption of the vehicle when driving in the historical section compared with driving on a flat road; the length and vehicle speed of the flat road and the historical section are the same, the driving route of the vehicle includes multiple connected driving sections, the historical section is one driving section, and the end position of the historical section is the current position of the vehicle; controlling the range - extender to work and generate electricity with a target power generation amount in the subsequent mileage; wherein the target power generation amount is the sum of the preset power generation amount of the range - extender in the subsequent mileage and the change amount of the driving power consumption. Therefore, the change amount of the driving power consumption caused by the slope in the historical section is taken into account in the target power generation amount of the range - extender in the subsequent mileage, so that the vehicle has better power retention performance and fuel consumption performance.

Description

Technical Field

[0001] This application relates to the technical field of vehicle range - extended power generation, and particularly to a control method, device, electronic device and computer - readable storage medium for a vehicle range extender. Background Art

[0002] In a range - extended vehicle, when the power of the battery pack is lower than a certain threshold power, the range extender will operate to generate electricity to supply power to the drive motor. Through the power generation of the range extender, the power of the battery pack can generally be maintained above the threshold power to ensure that the vehicle has good power retention performance, and will not be too high to ensure that the vehicle has good fuel consumption performance.

[0003] Currently, when the range extender operates to generate electricity, its generated power is generally consistent with the calculated driving power required by the vehicle. However, currently used maps basically have no slope information or altitude information. In the calculation of the driving power required by the vehicle, the influence of the slope of the road on the driving power required is generally not considered, resulting in inaccurate calculation of the driving power required by the vehicle. At this time, the generated power of the range extender is inconsistent with the driving power required by the vehicle, resulting in over - generation or under - generation of the range extender, and resulting in poor power retention performance or fuel consumption performance of the vehicle. Summary of the Invention

[0004] In view of the above problems, this application provides a control method, device, electronic device and computer - readable storage medium for a vehicle range extender. The change in driving power generated by the slope in the historical section will be taken into account in the target generated power of the range extender in the subsequent mileage, so that the vehicle has good power retention performance and fuel consumption performance.

[0005] The first aspect of this application provides a control method for a vehicle range extender, including: when it is detected that the range extender of the vehicle operates to generate electricity in the historical section, obtaining the change in driving power of the vehicle when driving in the historical section compared to driving on a flat road; wherein, the length and vehicle speed of the flat road are the same as those of the historical section, the driving route of the vehicle includes a plurality of connected driving sections, the length of the driving section is a preset length or its corresponding driving duration is a preset duration, the historical section is a driving section, and the end position of the historical section is the current position of the vehicle; controlling the range extender to operate to generate electricity with a target generated power in the subsequent mileage; wherein, the target generated power is the sum of the preset generated power of the range extender in the subsequent mileage and the change in driving power.

[0006] In some specific embodiments, the step of controlling the range extender to operate to generate electricity with a target generated power in the subsequent mileage includes: obtaining the target generated power of the range extender in the current section; wherein, the current section is a driving section and its starting point is the end point of the historical section, and the target generated power is the sum of the preset generated power of the range extender in the current section and the change in driving power; controlling the range extender to operate to generate electricity with the target generated power in the current section.

[0007] In some specific embodiments, after the step of obtaining the target power generation amount of the range extender in the current road section, the following steps are included: obtaining the preset NVH standard corresponding to the vehicle in the current road section, and obtaining the maximum power generation amount corresponding to the current road section by the range extender under the preset NVH standard; detecting that the maximum power generation amount is greater than or equal to the target power generation amount, then performing the step of controlling the range extender to generate electricity at the target power generation amount in the current road section.

[0008] In some specific embodiments, after the step of obtaining the preset NVH standard corresponding to the vehicle in the current road section and obtaining the maximum power generation amount corresponding to the current road section by the range extender under the preset NVH standard, the following steps are included: detecting that the maximum power generation amount is less than the target power generation amount, then controlling the range extender to generate electricity at the maximum power generation amount in the current road section; obtaining the difference power amount between the target power generation amount and the maximum power generation amount, and adding the difference power amount to the preset power generation amount for the subsequent mileage.

[0009] In some specific embodiments, after the step of obtaining the target power generation amount of the range extender in the current road section, the following steps are included: obtaining the preset NVH standard and the preset fuel-electricity conversion rate standard corresponding to the vehicle in the current road section, obtaining the first power generation amount range corresponding to the current road section by the range extender under the preset NVH standard, and obtaining the second power generation amount range corresponding to the current road section by the range extender under the preset fuel-electricity conversion rate standard; detecting that the target power generation amount falls within the overlapping interval of the first power generation amount range and the second power generation amount range, then performing the step of controlling the range extender to generate electricity at the target power generation amount in the current road section; detecting that the target power generation amount does not fall within the overlapping interval of the first power generation amount range and the second power generation amount range, then determining the selected power generation amount with the smallest difference from the target power generation amount in the overlapping interval, and controlling the range extender to generate electricity at the selected power generation amount in the current road section.

[0010] In some specific embodiments, the step of obtaining the change amount of the driving power of the vehicle when driving on a historical road section compared to driving on a flat road includes: obtaining the slope information of the historical road section; wherein, the slope information includes the slope angle and the slope length; obtaining the change amount of the driving power of the vehicle when driving on the historical road section compared to driving on a flat road based on the slope information.

[0011] In some specific embodiments, the step of obtaining the change amount of the driving power of the vehicle when driving on a historical road section compared to driving on a flat road includes: obtaining the sub-change amount of the driving power of the vehicle when driving on a sub-road section compared to driving on a flat road; wherein, the lengths and vehicle speeds of the flat road and the sub-road section are the same, and multiple connected sub-road sections form the historical road section; taking the sub-change amounts of the driving power corresponding to all sub-road sections as the change amount of the driving power of the vehicle when driving on the historical road section compared to driving on a flat road.

[0012] The second aspect of the present application provides a control device for a vehicle range extender, including: an acquisition module configured to, when it is detected that the range extender of the vehicle generates electricity during a historical section, acquire the change in driving power consumption of the vehicle during driving in the historical section compared to driving on a flat road; wherein, the flat road and the historical section have the same corresponding length and vehicle speed, the driving route of the vehicle includes a plurality of connected driving sections, the length of the driving section is a preset length or the corresponding driving duration is a preset duration, the historical section is one driving section, and the end position of the historical section is the current position of the vehicle; a control module configured to control the range extender to generate electricity at a target power generation amount in subsequent mileage; wherein, the target power generation amount is the sum of the preset power generation amount of the range extender in subsequent mileage and the change in driving power consumption.

[0013] The third aspect of the present application provides an electronic device, including: a processor; a memory configured to store a computer program, and when the computer program is executed by the processor, it implements the control method of the vehicle range extender as described in any one of the above.

[0014] The fourth aspect of the present application provides a computer-readable storage medium, in which a computer program is stored, and when the computer program is executed by the processor, it implements the control method of the vehicle range extender as described in any one of the above.

[0015] The at least beneficial technical effects of the present application are as follows: Based on the control method, device, electronic device, and computer-readable storage medium of the vehicle range extender provided by the present application, it includes: when it is detected that the range extender of the vehicle generates electricity during a historical section, acquire the change in driving power consumption of the vehicle during driving in the historical section compared to driving on a flat road; wherein, the flat road and the historical section have the same corresponding length and vehicle speed, the driving route of the vehicle includes a plurality of connected driving sections, the length of the driving section is a preset length or the corresponding driving duration is a preset duration, the historical section is one driving section, and the end position of the historical section is the current position of the vehicle; control the range extender to generate electricity at a target power generation amount in subsequent mileage; wherein, the target power generation amount is the sum of the preset power generation amount of the range extender in subsequent mileage and the change in driving power consumption. Therefore, the change in driving power consumption caused by the slope in the historical section is taken into account in the target power generation amount of the range extender in subsequent mileage, reducing the difference between the power generated by the range extender and the driving power consumption required for vehicle driving, so that the vehicle has better power retention performance and fuel consumption performance.

[0016] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to be able to understand the technical means of the embodiments of the present application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features, and advantages of the embodiments of the present application more obvious and understandable, the following specifically gives the specific implementation manners of the present application. Description of the Drawings

[0017] The accompanying drawings are only used to illustrate the embodiments and are not considered as a limitation to this application. Moreover, throughout the drawings, the same reference signs are used to denote the same components. In the drawings:

[0018] Figure 1 is a schematic flowchart of an embodiment of the control method of the vehicle range extender provided by this application;

[0019] Figure 2 is a schematic diagram of a driving route of a vehicle;

[0020] Figure 3 is a schematic flowchart of another embodiment of the control method of the vehicle range extender provided by this application;

[0021] Figure 4 is a schematic flowchart of yet another embodiment of the control method of the vehicle range extender provided by this application;

[0022] Figure 5 is a schematic flowchart of yet another embodiment of the control method of the vehicle range extender provided by this application;

[0023] Figure 6 is a schematic flowchart of yet another embodiment of the control method of the vehicle range extender provided by this application;

[0024] Figure 7 is a schematic flowchart of yet another embodiment of the control method of the vehicle range extender provided by this application;

[0025] Figure 8 is a schematic flowchart of yet another embodiment of the control method of the vehicle range extender provided by this application;

[0026] Figure 9 is a structural block diagram of an embodiment of the control device of the vehicle range extender provided by this application;

[0027] Figure 10 is a schematic structural framework diagram of an embodiment of the electronic device provided by this application;

[0028] Figure 11 is a schematic structural framework diagram of an embodiment of the computer-readable storage medium provided by this application. Detailed Embodiments

[0029] The exemplary embodiments of this application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be limited by the embodiments set forth herein. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0030] If descriptions such as "first", "second", etc. are involved in the embodiments of this application, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one such feature. Additionally, the meaning of "and / or" that appears throughout the text is that it includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where both A and B are satisfied simultaneously. Moreover, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or is unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0031] In the first aspect of this application, a control method for a vehicle range extender is provided, and this method is applied to a range-extended vehicle. Figure 1 It is a schematic flowchart of an embodiment of the control method for the vehicle range extender provided by this application. Combining Figure 1 with this, this method includes the following steps:

[0032] S11: If it is detected that the range extender of the vehicle generates electricity during the historical section, obtain the change in driving power consumption of the vehicle when driving in the historical section compared to driving on a flat road; wherein, the length and vehicle speed of the flat road are the same as those of the historical section, the driving route of the vehicle includes multiple connected driving sections, the length of the driving section is a preset length or its corresponding driving duration is a preset duration, the historical section is a driving section, and the end position of the historical section is the current position of the vehicle.

[0033] Figure 2 It is a schematic diagram of the driving route of the vehicle.

[0034] Combining Figure 2 with this, the straight line L represents the driving route of the vehicle, and this driving route can include the sections that the vehicle has already traveled and the sections that it may travel in the future. The sections that the vehicle may travel in the future can be obtained through navigation information. Among them, point A represents the current position of the vehicle. At this time, the driving route before point A is the section that the vehicle has already traveled, and the section after point A is the section that the vehicle may travel in the future. The driving route represented by the straight line L can be the driving route of the vehicle during a continuous driving process, that is, during this driving process, the vehicle does not stop or stops for a short time.

[0035] At this time, the driving route includes multiple connected driving sections. In Figure 2Three consecutive driving sections, namely L1, L2, and L3, are shown. The lengths of L1, L2, and L3 are all preset lengths, or the corresponding driving durations are all preset durations. Among them, the preset length corresponding to the driving section can be short, and the corresponding driving duration can also be short.

[0036] Combined with the application scenario where point A is the current position of the vehicle, at this time L1 is the historical section. It should be understood that since the vehicle is constantly moving, the historical section of the vehicle may change continuously. For example, combined with Figure 2 , when the vehicle travels to position B, L2 is the historical section, and when the vehicle travels to position C, L3 is the historical section. It should be understood that the driving sections do not overlap, so all historical sections do not overlap either.

[0037] When it is detected that the vehicle generates electricity while working in the historical section, it indicates that the battery pack of the vehicle has a low power in the historical section, and the range extender generates electricity to supply power to the drive motor.

[0038] The historical section may have a certain slope, that is, the historical section may include an uphill section and / or a downhill section. If the slope of the historical section is regarded as 0 (i.e., a flat road), a driving power of the vehicle can be obtained, and this driving power is inconsistent with the actual driving power of the vehicle in the historical section because the slope of the historical section will have a certain impact on the driving power of the vehicle.

[0039] The flat road in this step has the same length and vehicle speed as the historical section, which is equivalent to the section obtained by regarding the slope of the historical section as 0. At this time, the driving power corresponding to the vehicle traveling on this flat road is actually the driving power of the vehicle traveling on the historical section with a slope regarded as 0. Therefore, obtaining the change in driving power of the vehicle when traveling in the historical section compared to traveling on the flat road is to obtain the change in driving power of the vehicle affected by the slope of the historical section when traveling in the historical section.

[0040] In some application scenarios, when the change in driving power is positive, it indicates that the range extender generates less electricity in the historical section; when it is negative, it indicates that the range extender generates more electricity in the historical section. When the historical section only includes an uphill section, the change in driving power is positive, that is, the driving power of the vehicle when traveling in the historical section will increase compared to traveling on the flat road. When the historical section only includes a downhill section, the change in driving power is negative, that is, the driving power of the vehicle when traveling in the historical section will decrease compared to traveling on the flat road. When the historical section includes both an uphill section and a downhill section at the same time, the change in driving power may be positive or negative, which depends on the magnitude of the influence of the uphill section and the downhill section on the driving power.

[0041] S12: Control the range extender to generate electricity at the target power generation in the subsequent mileage; wherein, the target power generation is the sum of the preset power generation of the range extender in the subsequent mileage and the change in driving power.

[0042] It should be understood that in the existing vehicle range extender control strategy, in a certain driving section, the power generation of the vehicle range extender is generally roughly the same as the calculated vehicle driving power. However, in the process of calculating the vehicle driving power, the slope of the driving section is generally not considered, resulting in a large difference between the calculated vehicle driving power and the actual vehicle driving power. At this time, the power generated by the range extender is quite different from the vehicle driving power.

[0043] When the power generated by the range extender is greater than the vehicle driving power, the extra power will be imported into the battery pack, increasing the power of the battery pack, which will be much higher than the threshold power of the battery pack. However, in many cases, in order to reduce the fuel consumption of power generation, it is only necessary to maintain the power of the battery pack at the threshold power, and there is no need to be much higher than the threshold power. Therefore, when the power generated by the range extender is greater than the driving power, it may lead to too high fuel consumption of the range extender, which is not conducive to reducing the vehicle fuel consumption to improve the fuel consumption performance of the vehicle. When the power generated by the range extender is less than the vehicle driving power, the battery pack will export part of the power to the drive motor, reducing the power of the battery pack. At this time, the power of the battery pack is very likely to be lower than the threshold power, reducing the power retention performance of the vehicle. At this time, the battery pack works in a not-so-good state, affecting the power output and its service life.

[0044] Therefore, in the historical section, due to a large difference between the power generated by the range extender and the driving power required by the vehicle, the power generated by the range extender is less or more. In this step, control the range extender to generate electricity at the target power generation in the subsequent mileage. Since the target power generation is the sum of the preset power generation in the subsequent mileage and the change in driving power, in fact, the change in driving power that is over-generated or under-generated in the historical section is added to the subsequent driving mileage, and then the range extender generates less or more power in the subsequent mileage to balance the power that is over-generated or under-generated in the historical section.

[0045] Combined with the above content, when the change in driving power is positive, it indicates that the range extender generates less power. At this time, adding the change in driving power to the preset power generation to form the target power generation can enable the range extender to generate more power by the amount of the change in driving power in the subsequent section, thereby making up for the power under-generated in the historical section, and then maintaining the power of the battery pack near the threshold power to improve the power retention performance of the vehicle. Similarly, when the change in driving power is negative, it indicates that the range extender generates more power. At this time, the target power generation formed in the subsequent process will be less than the preset power generation, so that the range extender generates less power by the amount of the change in driving power in the subsequent mileage, thereby reducing the fuel consumption of the range extender to improve the fuel consumption performance of the vehicle.

[0046] Among them, the subsequent mileage can be the mileage after the current position of the vehicle. For example, after obtaining the change amount of driving power corresponding to the historical section at point A, the subsequent mileage is the change amount of driving power after point A. Among them, the change amount of driving power can be added to the preset power generation amount of all subsequent driving sections or some driving sections. For example, the change amount of driving power can be evenly distributed to each subsequent driving section, or the change amount of driving power can be distributed to some driving sections.

[0047] For the preset power generation amount of the subsequent mileage, the preset power generation amount can be predicted according to the predicted vehicle speed information, road section length information, etc. through a preset rule. Among them, the vehicle speed information and road section length information can be obtained through the navigation information of the vehicle. Of course, when the subsequent mileage is short, the current vehicle speed can be used as the vehicle speed of the subsequent mileage. At this time, if the predicted preset power generation amount of the vehicle in the subsequent driving mileage is S1, and the obtained change amount of driving power is S2, then the target power generation amount in the subsequent mileage is S1 + S2.

[0048] It should be understood that the preset rule for obtaining the preset power generation amount can be an existing rule, and this rule does not consider the influence of the slope on the power generation amount. In the prior art, generally, after predicting the power generation amount of the range extender in a future section of mileage through this preset rule, the range extender is directly controlled to generate power at this power generation amount in this mileage, so problems of over - power generation or under - power generation will occur.

[0049] Figure 3 It is a schematic flowchart of another embodiment of the control method of the vehicle range extender provided by the present application. Combining Figure 3 , in some specific embodiments, the step of controlling the range extender to generate power at the target power generation amount in the subsequent mileage includes:

[0050] S21: Obtain the target power generation amount of the range extender in the current section; where the current section is a driving section and its starting point is the end point of the historical section, and the target power generation amount is the sum of the preset power generation amount of the range extender in the current section and the change amount of driving power.

[0051] Combining the above content and Figure 2 , if the current position is point A, then point A is the end point of the historical section and the starting point of the current section, and L2 is the current section.

[0052] In this embodiment, the sum of the preset power generation amount and the preset power generation amount in the current section is used as the target power generation amount, that is, the current section is used as the subsequent mileage at this time. At this time, since the current section may be a short section, the current vehicle speed can be used as the vehicle speed of the current section, and then based on the current vehicle speed and the length of the current section, etc., the driving power required for the current section is obtained, and then the preset power generation amount of the current section is obtained.

[0053] It should be understood that taking the current road section as the subsequent mileage and then balancing the change in driving power generation to the current road section can relatively quickly achieve the balance of over-generation or under-generation of historical road sections, thereby ensuring the power retention performance of the vehicle.

[0054] S22: Control the range extender to generate electricity at the target power generation amount within the current road section.

[0055] After calculating the target power generation amount corresponding to the current road section, control the range extender to generate electricity at the target power generation amount within the current road section to achieve the balance of over-generation or under-generation of historical road sections in the current road section.

[0056] Combined with Figure 2 , when the vehicle travels to position B, L2 is the historical road section and L3 is the current road section. Then, at this time, add the change in driving power generation amount corresponding to L2 to the preset power generation amount corresponding to L3, and then obtain the target power generation amount corresponding to L3 to further control the range extender to work at the target power generation amount in L3. Therefore, during the vehicle driving process, if the range extender works, the over-generation or under-generation of electricity of the range extender corresponding to all traveled road sections will be balanced in the current road section, thereby reducing the influence of the slope on the over-generation or under-generation of electricity of the range extender.

[0057] Figure 4 is a schematic flowchart of another embodiment of the control method of the vehicle range extender provided by the present application. Combined with Figure 4 , in some specific embodiments, after the step of obtaining the target power generation amount of the range extender within the current road section, that is, after the above step S21, it includes:

[0058] S31: Obtain the preset NVH standard corresponding to the vehicle in the current road section, and obtain the maximum power generation amount of the range extender corresponding to the current road section under the preset NVH standard.

[0059] NVH (Noise, Vibration, Harshness) is an important standard for measuring vehicle comfort. In some scenarios, in order to ensure the riding comfort, users will set a certain preset NVH standard so that the vehicle reaches this preset NVH standard, and then obtain a good comfort experience under this preset NVH standard.

[0060] It should be understood that the range extender will generate relatively large vibrations and noises during operation, which will, to a large extent, affect the NVH performance of the vehicle. And generally speaking, the greater the power generation power of the range extender, the greater the vibrations and noises generated, making the NVH performance of the vehicle worse. Therefore, generally speaking, under the preset NVH standard of the current road section, corresponding to the maximum power generation power of a range extender, the maximum power generation amount of the range extender corresponding to the current road section can be further obtained according to the maximum power generation power.

[0061] S32: If it is detected that the maximum power generation amount is greater than or equal to the target power generation amount, then execute the step of controlling the range extender to generate electricity at the target power generation amount within the current section.

[0062] When the maximum power generation amount is greater than or equal to the target power generation amount, it indicates that when the range extender operates at the target power generation amount, the NVH performance of the vehicle can meet the preset NVH standard.

[0063] Execute the step of controlling the range extender to generate electricity at the target power generation amount within the current section, that is, execute the above step S22. At this time, controlling the range extender to generate electricity at the target power generation amount within the current section can balance the over-generation or under-generation in the historical sections and the NVH performance of the vehicle.

[0064] Figure 5 It is a schematic flowchart of another embodiment of the control method for a vehicle range extender provided by the present application. In combination with Figure 5 , in some specific embodiments, after the steps of obtaining the preset NVH standard corresponding to the current section of the vehicle and obtaining the maximum power generation amount corresponding to the current section of the range extender under the preset NVH standard, it includes:

[0065] S41: If it is detected that the maximum power generation amount is less than the target power generation amount, then control the range extender to generate electricity at the maximum power generation amount within the current section.

[0066] Detecting that the maximum power generation amount is less than the target power generation amount indicates that if the range extender operates at the target power generation amount, the NVH performance of the vehicle is likely to deteriorate and not meet the preset NVH standard. Therefore, in order to give priority to the comfort of the vehicle and at the same time consider the balance of over-generation or under-generation in the historical sections, the range extender is controlled to generate electricity at the maximum power generation amount within the current section.

[0067] S42: Obtain the difference in power generation amount between the target power generation amount and the maximum power generation amount, and add the difference in power generation amount to the preset power generation amount for the subsequent mileage.

[0068] In step S41, due to giving priority to the comfort requirements of the vehicle, the balance of over-generation or under-generation in the current section for the historical sections will be weakened, resulting in the over-generation or under-generation of electricity in the current section not being the driving power change amount. At this time, in the best state, the power generation amount within the current section reaches the target power generation amount, but it has not reached yet, and there is still a part of the power lacking. This part of the lacking power is the difference in power generation amount.

[0069] At this time, adding the difference in power generation amount between the target power generation amount and the maximum power generation amount to the preset power generation amount for the subsequent mileage can be adding it to the preset power generation amounts of multiple driving sections in the subsequent mileage, or adding it to the preset power generation amount of the next driving section after the current section.

[0070] Figure 6 It is a schematic flowchart of another embodiment of the control method of the vehicle range extender provided by the present application. In combination with Figure 6 , in some specific embodiments, after the step of obtaining the target power generation amount of the range extender within the current road section, that is, after the above step S21, it includes:

[0071] S51: Obtain the preset NVH standard and the preset fuel-electric conversion rate standard corresponding to the current road section of the vehicle, obtain the first power generation amount range corresponding to the current road section of the range extender under the preset NVH standard, and obtain the second power generation amount range corresponding to the current road section of the range extender under the preset fuel-electric conversion rate standard.

[0072] It should be understood that under the current road section, the power generation power of the range extender will affect the NVH performance of the vehicle and the fuel-electric conversion rate of the range extender. Generally speaking, under the vehicle speed parameter corresponding to the current road section, if the NVH standard of the vehicle is to be met, a power generation power range will correspond to the range extender, and then the first power generation amount range can be calculated according to this power generation power range. If the preset fuel-electric conversion rate standard is to be met, the range extender will also correspond to a power generation power range, and at this time, the second power generation amount range can be obtained according to this power generation power range.

[0073] S52: If it is detected that the target power generation amount falls within the overlapping interval of the first power generation amount range and the second power generation amount range, then execute the step of controlling the range extender to generate electricity with the target power generation amount within the current road section.

[0074] The first power generation amount range and the second power generation amount range generally have an overlapping interval. Generating electricity with the power generation amount within this overlapping interval can generally meet both the NVH performance of the vehicle and the fuel-electric conversion rate standard of the range extender.

[0075] Therefore, if it is detected that the target power generation amount falls within the overlapping interval of the first power generation amount range and the second power generation amount range, then execute the step of controlling the range extender to generate electricity with the target power generation amount within the current road section, that is, execute the above step S22. At this time, the preset NVH standard and the preset fuel-electric conversion rate standard can be met simultaneously, and a good balance of over-generation or under-generation in the historical road section can be achieved.

[0076] S53: If it is detected that the target power generation amount does not fall within the overlapping interval of the first power generation amount range and the second power generation amount range, then determine the selected power generation amount with the smallest difference from the target power generation amount in the overlapping interval, and control the range extender to generate electricity with the selected power generation amount within the current road section.

[0077] If it is detected that the target power generation amount does not fall within the overlapping interval of the first power generation amount range and the second power generation amount range, it means that if the range extender generates electricity with the target power generation amount, it cannot meet the preset NVH standard and the preset fuel-electric conversion rate standard simultaneously.

[0078] At this time, the target power generation amount may be less than the minimum value of the coincidence interval or greater than the maximum value of the coincidence interval. If the target power generation amount is less than the minimum value of the coincidence interval, then the selected power generation amount is the minimum value of the coincidence interval. If the target power generation amount is greater than the maximum value of the coincidence interval, then the selected power generation amount is the maximum value of the coincidence interval.

[0079] It should be understood that by determining the selected power generation amount with the smallest difference from the target power generation amount in the coincidence interval and controlling the range extender to generate power at the selected power generation amount within the current road section, it is possible to be as close as possible to the target power generation amount on the basis of meeting the preset NVH standard and the preset fuel-electric conversion rate standard.

[0080] At this time, there is a difference in power between the selected power generation amount and the target power generation amount. Referring to the content of the above embodiments, this difference in power can also be added to the preset power generation amount for subsequent mileage. Specifically, this power difference can be added to the next driving section of the current road section.

[0081] Figure 7 is a schematic flowchart of another embodiment of the control method for a vehicle range extender provided by the present application. Combining Figure 7 , in some specific embodiments, the step of obtaining the change amount of the driving power of the vehicle when driving on a historical road section compared to driving on a flat road includes:

[0082] S61: Obtain the slope information of the historical road section; wherein, the slope information includes the slope angle and the slope length.

[0083] Among them, the vehicle can detect while driving, and then complete the detection after driving on the historical road section, and then obtain the slope information of the historical road section based on the detection information. Specifically, the vehicle can detect through sensors, and then obtain the slope information of the historical road section through the sensing information.

[0084] It should be understood that since the map information in the prior art cannot provide altitude information or slope information, generally, the slope information of the road cannot be obtained through navigation information. In this embodiment, by detecting while driving, after driving on the historical road section, relatively accurate slope information can be obtained.

[0085] S62: Obtain the change amount of the driving power of the vehicle when driving on the historical road section compared to driving on a flat road based on the slope information.

[0086] Based on the slope information, through a preset calculation method, the change amount of the driving power can be directly obtained.

[0087] Figure 8 is a schematic flowchart of another embodiment of the control method for a vehicle range extender provided by the present application. Combining Figure 8, in some specific embodiments, the step of obtaining the change in driving power consumption of the vehicle when driving on a historical road section compared to driving on a flat road includes:

[0088] S71: Obtain the change in sub-driving power consumption of the vehicle when driving on a sub-road section compared to driving on a flat road; wherein, the lengths and vehicle speeds of the flat road and the sub-road section are the same, and multiple connected sub-road sections constitute the historical road section.

[0089] At this time, the historical road section is divided into multiple connected sub-road sections. By obtaining the change in driving power consumption of each sub-road section, the acquisition of the change in driving power consumption of the historical road section is made more accurate, and thus a more accurate change in driving power consumption is obtained.

[0090] Combined with the above content, at this time, the slope information of each sub-road section can be obtained, and then the change in driving power consumption corresponding to the sub-road section can be obtained based on the slope section information of the sub-road section.

[0091] S72: Use the change in sub-driving power consumption corresponding to all sub-road sections as the change in driving power consumption of the vehicle when driving on the historical road section compared to driving on a flat road.

[0092] After obtaining the change in driving power consumption corresponding to all sub-road sections, adding up the change in driving power consumption corresponding to all sub-road sections can obtain the change in driving power consumption corresponding to the historical road section.

[0093] The second aspect of the present application provides a control device 20 for a vehicle range extender, Figure 9 which is a structural block diagram of an embodiment of the control device 20 for a vehicle range extender provided by the present application.

[0094] Combined with Figure 9 , the control device 20 for a vehicle range extender includes an acquisition module 21 and a control module 22. The acquisition module 21 is used to detect that the range extender of the vehicle generates electricity during a historical road section, and then obtain the change in driving power consumption of the vehicle when driving on the historical road section compared to driving on a flat road; wherein, the lengths and vehicle speeds of the flat road and the historical road section are the same, the driving route of the vehicle includes multiple connected driving road sections, the length of the driving road section is a preset length or its corresponding driving duration is a preset duration, the historical road section is a driving road section, and the end position of the historical road section is the current position of the vehicle. The control module 22 is used to control the range extender to generate electricity with a target power generation amount during the subsequent mileage; wherein, the target power generation amount is the sum of the preset power generation amount of the range extender during the subsequent mileage and the change in driving power consumption.

[0095] The third aspect of the present application provides an electronic device, including: a processor; a memory for storing a computer program, and when the computer program is executed by the processor, it implements the control method for a vehicle range extender in any of the above embodiments.

[0096] Figure 10 It is a schematic structural framework diagram of an embodiment of the electronic device 500 provided by the present application.

[0097] In some specific embodiments, the electronic device 500 includes 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 section 508 into the Random Access Memory (RAM) 503, such as executing the methods in the above embodiments. In the RAM 503, various programs and data required for system operations are also stored. The CPU 501, ROM 502, and RAM 503 are connected to each other via a bus 504. The Input / Output (I / O) interface 505 is also connected to the bus 504.

[0098] The following components are connected to the I / O interface 505: an input section 506 including a keyboard, a mouse, etc.; an output section 507 including, for example, a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), etc. and a speaker, etc.; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. 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 needed. A removable medium 511, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 510 as needed so that a computer program read from it can be installed into the storage section 508 as needed.

[0099] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication part 509, and / or installed from the removable 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.

[0100] A fourth aspect of the present application provides a computer-readable storage medium 40, Figure 11 which is a schematic structural framework diagram of an embodiment of the computer-readable storage medium 40 provided by the present application.

[0101] A computer program 41 is stored on the computer-readable storage medium 40, and when the computer program 41 is executed by a processor, it implements the control method of the vehicle range extender in the above embodiments.

[0102] 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, a computer-readable storage medium, or any combination of the two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, 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 of the above. In the present application, the computer-readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or in combination with an instruction execution system, apparatus, or device. In the present application, the computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable computer program. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. The computer-readable signal medium can also be any computer-readable medium other than the computer-readable storage medium, and this computer-readable medium can send, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium can be transmitted by any suitable medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0103] In summary, based on the control method, device, electronic device, and computer-readable storage medium for a vehicle range extender provided by the present application, it includes: when it is detected that the range extender of the vehicle generates electricity during operation in a historical section, obtaining the change in driving power consumption of the vehicle when driving in the historical section compared to driving on a flat road; where the length and vehicle speed of the flat road and the historical section are the same, the driving route of the vehicle includes multiple connected driving sections, the length of the driving section is a preset length or the corresponding driving duration is a preset duration, the historical section is a driving section, and the end position of the historical section is the current position of the vehicle; where the target power generation amount is the sum of the preset power generation amount of the range extender in the subsequent mileage and the change in driving power consumption. Therefore, the change in driving power consumption caused by the slope in the historical section is taken into account in the target power generation amount of the range extender in the subsequent mileage, reducing the difference between the power generated by the range extender and the driving power consumption required for vehicle driving, so that the vehicle has better power retention performance and fuel consumption performance.

[0104] The above content is only a preferred exemplary embodiment of the present application and is not used to limit the implementation of the present application. Those of ordinary skill in the art can easily make corresponding adaptations or modifications according to the main concept and spirit of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope required by the claims.

Claims

1. A control method for a vehicle range extender, characterized in that, Including: If it is detected that the range extender of the vehicle generates electricity during operation in a historical section, the change in driving power consumption of the vehicle when driving in the historical section compared to driving on a flat road is obtained; wherein, the flat road has the same length and vehicle speed as the historical section, the driving route of the vehicle includes multiple connected driving sections, the length of the driving section is a preset length or the corresponding driving duration is a preset duration, the historical section is one of the driving sections, and the end position of the historical section is the current position of the vehicle; The target power generation amount of the range extender in the current section is obtained; wherein, the current section is one of the driving sections and its starting point is the end point of the historical section, and the target power generation amount is the sum of the preset power generation amount of the range extender in the current section and the change in driving power consumption; The preset NVH standard and the preset fuel-electric conversion rate standard corresponding to the vehicle in the current section are obtained, the first power generation amount range corresponding to the current section of the range extender under the preset NVH standard is obtained, and the second power generation amount range corresponding to the current section of the range extender under the preset fuel-electric conversion rate standard is obtained; If it is detected that the target power generation amount falls within the overlapping interval of the first power generation amount range and the second power generation amount range, the range extender is controlled to generate electricity with the target power generation amount in the current section.

2. The control method of the vehicle range extender according to claim 1, wherein: After the step of obtaining the target power generation amount of the range extender in the current section, it includes: The preset NVH standard corresponding to the vehicle in the current section is obtained, and the maximum power generation amount corresponding to the current section of the range extender under the preset NVH standard is obtained; If it is detected that the maximum power generation amount is greater than or equal to the target power generation amount, the step of controlling the range extender to generate electricity with the target power generation amount in the current section is executed.

3. The control method of the vehicle range extender according to claim 2, wherein: After the step of obtaining the preset NVH standard corresponding to the vehicle in the current section and the maximum power generation amount corresponding to the current section of the range extender under the preset NVH standard, it includes: If it is detected that the maximum power generation amount is less than the target power generation amount, the range extender is controlled to generate electricity with the maximum power generation amount in the current section; The difference in power generation amount between the target power generation amount and the maximum power generation amount is obtained, and the difference in power generation amount is added to the preset power generation amount for subsequent mileage.

4. The control method of the vehicle range extender according to claim 1, wherein: After the step of obtaining the preset NVH standard and the preset fuel-electric conversion rate standard corresponding to the vehicle in the current section, the first power generation amount range corresponding to the current section of the range extender under the preset NVH standard, and the second power generation amount range corresponding to the current section of the range extender under the preset fuel-electric conversion rate standard, it includes: If it is detected that the target power generation amount does not fall within the overlapping interval of the first power generation range and the second power generation range, then determine the selected power generation amount with the smallest difference from the target power generation amount in the overlapping interval, and control the range extender to generate power at the selected power generation amount within the current road section.

5. The control method of a vehicle range extender according to claim 1, wherein: The step of obtaining the change amount of the driving power of the vehicle when driving on a historical road section compared to driving on a flat road includes: Obtain the slope information of the historical road section; wherein, the slope information includes the slope angle and the slope length; Based on the slope information, obtain the change amount of the driving power of the vehicle when driving on the historical road section compared to driving on a flat road.

6. The control method of a vehicle range extender according to claim 1, wherein: The step of obtaining the change amount of the driving power of the vehicle when driving on a historical road section compared to driving on a flat road includes: Obtain the change amount of the sub-driving power of the vehicle when driving on a sub-road section compared to driving on a flat road; wherein, the length and vehicle speed of the flat road and the sub-road section are the same, and multiple connected sub-road sections form the historical road section; Use the change amount of the sub-driving power corresponding to all the sub-road sections as the change amount of the driving power of the vehicle when driving on the historical road section compared to driving on a flat road.

7. A control device for a vehicle range extender, characterized in that, It includes: An acquisition module, configured to, when it is detected that the range extender of the vehicle generates power within a historical road section, obtain the change amount of the driving power of the vehicle when driving on the historical road section compared to driving on a flat road; wherein, the length and vehicle speed of the flat road and the historical road section are the same, the driving route of the vehicle includes multiple connected driving road sections, the length of the driving road section is a preset length or the corresponding driving duration is a preset duration, the historical road section is one of the driving road sections, and the end position of the historical road section is the current position of the vehicle; it is further configured to obtain the target power generation amount of the range extender within the current road section; wherein, the current road section is one of the driving road sections and its starting point is the end of the historical road section, and the target power generation amount is the sum of the preset power generation amount of the range extender within the current road section and the change amount of the driving power; and it is further configured to obtain the preset NVH standard and the preset fuel-electric conversion rate standard corresponding to the current road section of the vehicle, obtain the first power generation range corresponding to the current road section of the range extender under the preset NVH standard, and obtain the second power generation range corresponding to the current road section of the range extender under the preset fuel-electric conversion rate standard; A control module, configured to, when it is detected that the target power generation amount falls within the overlapping interval of the first power generation range and the second power generation range, control the range extender to generate power at the target power generation amount within the current road section.

8. An electronic device, characterized in that, It includes: A processor; A memory, configured to store a computer program, and when the computer program is executed by the processor, it implements the control method of the vehicle range extender according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, A computer program is stored in the storage medium, and when the computer program is executed by a processor, it implements the control method of the vehicle range extender according to any one of claims 1-6.

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