Range extender control method, device and equipment of vehicle and storage medium

Abstract

The application relates to the technical field of vehicle range extending control, and discloses a range extender control method, device and equipment of a vehicle and a storage medium, the method comprising the following steps: acquiring road section information of each section of a remaining driving road section of the vehicle; acquiring required power consumption of the vehicle in each section and total energy recovery power of the remaining driving road section based on the road section information; if the sum of the required power consumption of the slope sections is greater than the total energy recovery power, then the basic power generation level of at least part of the road sections in the remaining driving road section is improved to obtain a target power generation level, so as to control the range extender of the vehicle to generate power based on the target power generation level; wherein the basic power generation level is determined by a preset power generation strategy. Therefore, when the energy recovery power cannot balance the power consumption of the slope sections, more power is generated in the whole road section by improving the power generation level, thereby ensuring the power demand in the whole process, so as to avoid the poor NVH performance of the vehicle caused by the large power generation of the vehicle on the uphill road section.

Description

Technical Field

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

[0002] Range-extended electric vehicles are gaining popularity among users. These vehicles can generate electricity by burning fuel through a range extender when the battery pack's charge level is below a certain threshold, thus providing power for the vehicle's operation and charging the battery pack.

[0003] Currently, range-extended vehicles do not have a planned power generation strategy that adapts to road conditions during a journey, which often leads to unreasonable distribution of power generation across different road sections. Power generation is high when driving uphill, resulting in poor NVH (Noise, Vibration, Harshness) experience and a poor driving experience for users. Summary of the Invention

[0004] In view of the above problems, this application provides a range extender control method, device, equipment and storage medium for vehicles. When the energy recovery power cannot balance the power consumption on the uphill section, more power is generated throughout the entire road section by increasing the power generation level, thereby ensuring the power demand throughout the entire journey and avoiding the vehicle's poor NVH performance caused by generating a large amount of power on the uphill section.

[0005] The first aspect of this application provides a method for controlling a vehicle's range extender, comprising: acquiring road segment information for each segment of the remaining driving route; wherein the segment includes sloping sections and non-sloping sections, and the road segment information includes slope, length, and location; acquiring the vehicle's required electricity consumption in each segment and the total energy recovery electricity corresponding to the remaining driving route based on the road segment information; if the sum of the required electricity consumption in the sloping sections is greater than the total energy recovery electricity, then increasing the basic power generation level of at least some road segments in the remaining driving route to obtain a target power generation level, so as to control the vehicle's range extender to generate electricity based on the target power generation level; wherein the basic power generation level is determined by a preset power generation strategy.

[0006] In some specific embodiments, the step of improving the basic power generation level of at least some road segments within the remaining driving route to obtain the target power generation level includes: obtaining the basic power generation level corresponding to the remaining driving route through a preset power generation strategy, and obtaining the current remaining power of the vehicle's battery pack; if the current remaining power is greater than or equal to the preset remaining power, then improving the basic power generation level, which is lower than the first target power generation level, to the first target power generation level; wherein, the first target power generation level corresponds to the preset remaining power and the target NVH standard.

[0007] In some specific embodiments, after obtaining the basic power generation level corresponding to the remaining driving segment through a preset power generation strategy and obtaining the current remaining power of the vehicle's battery pack, the method includes: if the current remaining power is less than the preset remaining power, then the basic power generation level, which is lower than the second target power generation level, is raised to the second target power generation level; wherein the second target power generation level is higher than the first target power generation level.

[0008] In some specific embodiments, if the sum of the electricity demand for the slope segment is greater than the total electricity recovered, then after the step of increasing the basic power generation level of at least some segments of the remaining driving segment to obtain the target power generation level, and controlling the vehicle's range extender to generate electricity based on the target power generation level, the method includes: obtaining the remaining battery pack charge of the vehicle when the current segment is completed, and obtaining the predicted power generation of the next segment; wherein, the slope segment includes uphill and downhill segments, and the next segment is an uphill segment; if the sum of the remaining charge and the predicted power generation is less than the electricity demand of the next segment, then the initial power generation power of the vehicle's range extender is compensated to obtain the target power generation power, so as to control the range extender to generate electricity at the target power generation power in the next segment; wherein, the initial power generation power is determined by a preset power generation strategy.

[0009] In some specific embodiments, the slope section includes uphill and downhill sections; after obtaining the vehicle's required power consumption in each segment and the total energy recovery power corresponding to the remaining driving segment based on the segment information, the method includes: if the sum of the required power consumption of the slope section is less than or equal to the total energy recovery power, then obtaining the predicted power generation of each segment; based on the predicted power generation, required power consumption, and the current remaining power of the vehicle's battery pack, determining the nearest uphill segment where the battery pack's power cannot meet the driving power demand as the uphill segment to be compensated; raising the basic power generation level of the uphill segment to be compensated and the segments preceding it that are lower than the first target power generation level to the first target power generation level, so as to control the vehicle's range extender to generate power at the first target power generation level in the segment corresponding to the first target power generation level; wherein, the first target power generation level corresponds to the target NVH standard.

[0010] In some specific embodiments, after the step of raising the basic power generation level of the uphill section to be compensated and the preceding segments, which is lower than the first target power generation level, to the first target power generation level, the method includes: obtaining the remaining power of the battery pack when the previous segment of the uphill section to be compensated is completed, and re-obtaining the predicted power generation of the uphill section to be compensated as the corrected predicted power generation; if the sum of the corrected predicted power generation and the remaining power is less than the power demand corresponding to the uphill section to be compensated, then the initial power generation of the range extender in the uphill section to be compensated is increased to obtain the target power generation; wherein, the initial power generation is determined by a preset power generation strategy, and the range extender generates power at the target power generation in the uphill section to be compensated.

[0011] In some specific embodiments, after obtaining the remaining battery power of the battery pack when the previous segment of the uphill section to be compensated is completed, and re-obtaining the predicted power generation of the uphill section to be compensated as the corrected predicted power generation, the method includes: if the sum of the corrected predicted power generation and the remaining battery power is less than the required power consumption corresponding to the uphill section to be compensated, then the power generation level in the uphill section to be compensated that is lower than the second target power generation level is raised to the second target power generation level, so as to control the range extender to generate power at the second target power generation level in the uphill section to be compensated; wherein, the second target power generation level is higher than the first target power generation level.

[0012] A second aspect of this application provides a control device for a vehicle range extender, comprising: an acquisition module for acquiring road segment information of each segment of the remaining driving route, wherein the segment includes sloping sections and non-sloping sections, and the road segment information includes the slope, length, and location of the sloping sections; acquiring the vehicle's required electricity consumption in each segment and the total energy recovery amount corresponding to the remaining driving route based on the road segment information; and a control module for, if the sum of the required electricity consumption in the sloping sections is greater than the total energy recovery amount, increasing the basic power generation level of at least some segments of the remaining driving route to obtain a target power generation level, thereby controlling the vehicle's range extender to generate electricity based on the target power generation level; wherein the basic power generation level is determined by a preset power generation strategy.

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

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

[0015] The beneficial technical effects of this application are at least as follows: Based on the vehicle range extender control method, device, equipment, and storage medium provided in this application, the method includes: acquiring road segment information for each segment of the remaining driving route; wherein, the segments include sloping sections and non-sloping sections, and the road segment information includes slope, length, and location; acquiring the vehicle's required electricity consumption in each segment and the total energy recovery electricity corresponding to the remaining driving route based on the road segment information; if the sum of the required electricity consumption in the sloping sections is greater than the total energy recovery electricity, then increasing the basic power generation level of at least some road segments in the remaining driving route to obtain a target power generation level, so as to control the vehicle's range extender to generate electricity based on the target power generation level; wherein, the basic power generation level is determined by a preset power generation strategy. Therefore, when the energy recovery electricity cannot balance the electricity consumption in the sloping sections, more electricity is generated throughout the entire road segment by increasing the power generation level, thereby ensuring the overall electricity demand and avoiding poor NVH performance of the vehicle due to excessive power generation in the uphill sections.

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

[0017] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

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

[0019] Figure 2 This is a schematic flowchart of another embodiment of the vehicle range extender control method provided in this application;

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

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

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

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

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

[0025] Figure 8 This is a structural block diagram of an embodiment of the control device for a vehicle range extender provided in this application;

[0026] Figure 9 This is a schematic diagram of the structural framework of an embodiment of the electronic device provided in this application;

[0027] Figure 10 This is a schematic diagram of the structural framework of an embodiment of the computer-readable storage medium provided in this application. Detailed Implementation

[0028] Exemplary embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited to the embodiments set forth herein. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without inventive effort are within the scope of protection of the present application.

[0029] If the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, if the word "and / or" appears throughout the text, it means including three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0030] The first aspect of this application provides a method for controlling a vehicle's range extender. Figure 1 This is a schematic flowchart of an embodiment of the vehicle range extender control method provided in this application. (In conjunction with...) Figure 1 This method includes the following steps:

[0031] S101: Obtain road segment information for each segment of the remaining driving route; where segments include sloping sections and non-sloping sections, and road segment information includes slope, length and location.

[0032] Specifically, navigation information can be used to obtain the remaining driving distance and its information. The remaining driving distance is the segment between the vehicle's current location and its destination. As the vehicle travels, the remaining driving distance may change continuously. Therefore, this information can be obtained in real time during the vehicle's journey. For example, it can be obtained at the starting point of a route, or at a point midway through the journey; there are no specific limitations.

[0033] The segmentation includes both sloping and non-sloping sections. The remaining driving route is then divided into multiple segments based on these sloping and non-sloping sections. In some applications, a segment is considered a sloping section if its gradient is greater than a preset gradient; otherwise, it is considered a non-sloping section. The preset gradient can be a small angle, or even 0°.

[0034] The road segment information includes gradient, length, and location. Especially when the segment is divided into sloping sections, it is crucial to obtain the gradient of each section to facilitate subsequent steps in determining the climbing power. Of course, the road segment information can also include segment speed information, without specific limitations.

[0035] S102: Based on road segment information, obtain the vehicle's required electricity consumption in each segment, as well as the total energy recovery electricity corresponding to the remaining driving segments.

[0036] Based on the above, since road segment information can include details such as length, gradient, and speed, further analysis using the vehicle's configuration information allows us to determine the vehicle's power consumption in each segment, and thus the required power consumption for that segment. Of course, the required power consumption is a predicted figure and usually differs from the actual power consumption, but the difference is typically small.

[0037] Vehicles recover energy under certain driving conditions. The vehicle's energy recovery strategy is preset. Based on road information, energy recovery strategy, and vehicle configuration information, the total amount of energy recovered for the remaining driving distance can be predicted.

[0038] S103: If the sum of the electricity demand for the slope section is greater than the total electricity recovered, the basic power generation level of at least some sections of the remaining driving section is increased to obtain the target power generation level, so as to control the vehicle's range extender to generate electricity based on the target power generation level; wherein, the basic power generation level is determined by a preset power generation strategy.

[0039] The above steps obtain the required power consumption for each segment, thus yielding the sum of the required power consumption for all uphill sections. If the sum of the required power consumption exceeds the total energy recovery power, it indicates that the power consumption on the uphill section exceeds the total energy recovery power, and the total energy recovery power for the remaining driving sections is insufficient to meet the needs of driving on the uphill section. In this situation, the vehicle's battery level typically drops significantly when driving uphill, causing the vehicle to generate electricity at a higher power, resulting in poor NVH performance and a poor user experience.

[0040] To avoid a poor user experience due to the vehicle generating power at a higher rate on uphill sections, this patent increases the base power generation level of at least some sections of the remaining driving route to achieve the target power generation level. This allows the vehicle to generate more power on the remaining driving route, thus preventing the vehicle's battery level from dropping to a low level on uphill sections and generating power at a higher rate.

[0041] It should be understood that the preset power generation strategy can be a power generation strategy existing in the technology. In the preset power generation strategy, the power generation level of the range extender can be determined by the real-time remaining power of the battery pack, thereby meeting the vehicle's real-time demand for power generation intensity.

[0042] Real-time remaining battery power 20％ 30％ 60％ 80％ Power generation level 2 1.5 1 0

[0043] The table above illustrates the relationship between real-time remaining battery power and power generation level. When the battery pack's real-time remaining battery power is 20%, the corresponding power generation level is 2; when it's 30%, the corresponding power generation level is 1.5; when it's 60%, the corresponding power generation level is 1; and when it's 80%, the corresponding power generation level is 0. Note that level 0 does not mean no power generation, but rather the lowest power generation level.

[0044] Regarding the specific setting of power generation levels, in some application scenarios, when the real-time remaining power is greater than or equal to 20% and less than 30%, the power generation level can be less than level 2 and greater than level 1.5; when the remaining power is greater than or equal to 30% and less than 60%, the power generation level can be less than level 1.5 and greater than level 1, and the setting method is the same for other ranges. Of course, in other application scenarios, the power generation level can also be: when the remaining power is less than 30% and greater than or equal to 20%, the corresponding power generation level is level 2; when the remaining power is less than 60% and greater than or equal to 30%, the corresponding power generation level is level 1.5, and the setting method is the same for other ranges.

[0045] It should be understood that each power generation level corresponds to a preset relationship curve between vehicle speed and power generation (vehicle speed-power curve). Once the power generation level is determined, the power generation of the range extender can be determined by the vehicle speed. The higher the power generation level, the greater the power generation intensity of the range extender. Therefore, at the same vehicle speed, a higher power generation level corresponds to a higher power generation, resulting in greater power generation intensity.

[0046] Based on the road segment information of the remaining driving route, the vehicle configuration information, and the preset power generation strategy, the basic power generation level of each road segment of the remaining driving route can be obtained. It should be understood that this describes the basic power generation level of each road segment, not the basic power generation level of each sub-segment, because a sub-segment may have multiple basic power generation levels to correspond to different road segments.

[0047] Therefore, the remaining driving segment may correspond to multiple different basic power generation levels, some of which are relatively low. This patent can increase at least some of the basic power generation levels to obtain the target power generation level. For example, if the remaining driving segment corresponds to 5 basic power generation levels, of which 2 are relatively low, these 2 lower power generation levels can be increased to obtain 2 target power generation levels. The basic and target power generation levels determined here correspond to pre-set power generation levels for the road segments. Power will only be generated at the corresponding power generation level when the vehicle subsequently travels to the corresponding road segment.

[0048] It should be understood that after improving the basic power generation level of at least some road sections to achieve the target power generation level, it is possible that all the outputs will be at the target power generation level. In this case, power generation during subsequent driving will be based on the target power generation level corresponding to each road section. Alternatively, it is possible that some of the target power generation levels will be achieved, while some of the basic power generation levels will remain unchanged. In this case, power generation during subsequent driving will be based on either the target power generation level or the basic power generation level corresponding to each road section.

[0049] In summary, based on the above embodiments, when the total amount of energy recovered cannot balance the electricity consumption on the uphill section, more electricity can be generated throughout the entire road section by increasing the power generation level, thereby ensuring the electricity demand throughout the entire journey and avoiding poor NVH performance of the vehicle due to high power generation on the uphill section.

[0050] Figure 2 This is a schematic flowchart of another embodiment of the vehicle range extender control method provided in this application.

[0051] Combination Figure 2 In conjunction with the above, in some specific embodiments, the step of improving the basic power generation level of at least a portion of the remaining driving route to obtain the target power generation level includes:

[0052] S201: Obtain the basic power generation level corresponding to the remaining driving segment through a preset power generation strategy, and obtain the current remaining power of the vehicle's battery pack.

[0053] Based on the above embodiments, by pre-setting power generation strategies, road segment information, and vehicle configuration information, the basic power generation level corresponding to the remaining driving route can be obtained. The current remaining charge of the vehicle's battery pack is the remaining charge of the battery pack obtained at the current moment.

[0054] S202: If the current remaining power is greater than or equal to the preset remaining power, the basic power generation level, which is lower than the first target power generation level, will be upgraded to the first target power generation level; wherein, the first target power generation level corresponds to the preset remaining power and the target NVH standard.

[0055] The preset remaining battery power can be set according to actual needs, and there are no specific restrictions. In some application scenarios, the preset remaining battery power can be set to 30%, but this is not a limitation. The target NVH standard can also be set according to actual needs. When the vehicle meets the target NVH standard, the vehicle's NVH performance is better. The first target power generation level is determined based on the vehicle's target NVH standard. That is, when the power generation level is less than or equal to the first target power generation level, the vehicle's NVH performance generally meets the target NVH standard. In some application scenarios, the first target power generation level can be 1.5, but this is not a limitation.

[0056] When the current remaining battery power is greater than or equal to the preset remaining battery power, it indicates that the current remaining battery power is relatively high. Although it is necessary to increase the power generation level, the vehicle's NVH performance must also be considered. Therefore, this embodiment only increases the base power generation level (which is lower than the first target power generation level) to the first target power generation level, and does not increase it to a power generation level higher than the first target power generation level. At this time, even when generating electricity at the first target power generation level, the vehicle's NVH performance is generally still good.

[0057] Based on the above example, if the preset remaining power is 30% and the first target power generation level is 1.5, the current remaining power is 40%, and the basic power generation levels are 1.2, 1.3, 1.6, 1.7, and 1.8 respectively, then the power generation levels of 1.2 and 1.3 will be upgraded to 1.5, while the remaining basic power generation levels will remain unchanged.

[0058] Figure 3 This is a flowchart illustrating another embodiment of the vehicle range extender control method provided in this application.

[0059] Combination Figure 3 In some specific embodiments, after obtaining the basic power generation level corresponding to the remaining driving segment through a preset power generation strategy and obtaining the current remaining power of the vehicle's battery pack, i.e. after step S201 above, the following steps are included:

[0060] S301: If the current remaining power is less than the preset remaining power, the basic power generation level, which is lower than the second target power generation level, will be upgraded to the second target power generation level; wherein the second target power generation level is higher than the first target power generation level.

[0061] If the current remaining battery power is less than the preset remaining battery power, it indicates that the current remaining battery power is low. In this case, when increasing the power generation level, the vehicle's NVH performance can be disregarded or considered only to a limited extent, with a focus on the battery pack's capacity. Therefore, the basic power generation level can be increased to a higher second target power generation level.

[0062] In some application scenarios, the second target power generation level can be level 2, which is a higher power generation level, or even the highest power generation level. Based on the example above, in this case, the power generation levels of 1.2, 1.3, 1.6, 1.7, and 1.8 all need to be upgraded to level 2.

[0063] Based on the above embodiments, the power generation level can be upgraded to different degrees according to different remaining power, thereby adapting to the actual needs of different specific application scenarios.

[0064] Figure 4 This is a flowchart illustrating another embodiment of the vehicle range extender control method provided in this application.

[0065] Combination Figure 4 In some specific embodiments, if the sum of the electricity demand for the slope section is greater than the total electricity recovered, then the basic power generation level of at least a portion of the remaining driving section is increased to obtain the target power generation level. After the step of controlling the vehicle's range extender to generate electricity based on the target power generation level, i.e., after the above-mentioned step S103, the following is included:

[0066] S401: Obtain the remaining charge of the vehicle's battery pack when the current segment is completed, and obtain the predicted power generation for the next segment; wherein, the slope segment includes uphill and downhill segments, and the next segment is an uphill segment.

[0067] The above embodiment implements the setting of power generation levels. After the setting is completed, the vehicle will generate electricity at the corresponding power generation level when it travels to the corresponding road segment during subsequent driving. When the vehicle travels to the current segment, if the next segment is an uphill segment, the remaining power of the battery pack will be obtained when the current segment is completed, and the predicted power generation of the next segment will be obtained, that is, the predicted power generation of the next uphill segment will be obtained.

[0068] It should be understood that after a section is identified as a slope, it can be further determined whether the slope is an uphill or downhill section based on its inclination (horizontal upward or horizontal downward).

[0069] It should be understood that the above embodiments have obtained the power generation level of the next segment. Based on the vehicle configuration information and road segment information, the power generation of the vehicle in the next segment can be obtained as the predicted power generation.

[0070] S402: If the sum of the remaining power and the predicted power generation is less than the power demand of the next segment, the initial power generation of the vehicle's range extender is compensated to obtain the target power generation, so as to control the range extender to generate power at the target power generation in the next segment; wherein, the initial power generation is determined by the preset power generation strategy.

[0071] If the remaining battery power and the preset power generation are less than the power demand for the next segment, it means that the vehicle's battery pack power cannot meet the vehicle's power demand on the uphill section. In order to ensure that the battery pack power meets the power demand on the uphill section, the initial power generation will be increased to obtain a higher target power generation, thereby increasing the vehicle's power generation on the uphill section to meet the driving needs.

[0072] The system includes a pre-set power generation strategy that determines the vehicle's initial power output based on its power generation level and road segment information. Therefore, based on the previously determined power generation level, road segment information, and vehicle configuration for the uphill section, the initial power output for that section can be obtained. This initial power output can be determined in advance or just before power generation begins; there are no specific restrictions. Once the initial power output is determined, it can be compensated to obtain the target power output. The degree of compensation can be determined according to requirements. For example, generating power based on the compensated target power output ensures that the battery pack has sufficient charge to meet the vehicle's power needs for climbing the hill.

[0073] Figure 5 This is a flowchart illustrating another embodiment of the vehicle range extender control method provided in this application.

[0074] Combination Figure 5 In some specific embodiments, the slope includes uphill and downhill sections. After obtaining the vehicle's required electricity consumption in each segment based on road segment information, and the total energy recovery electricity corresponding to the remaining driving segment, i.e., after step S102 above, the following steps are included:

[0075] S501: If the sum of the electricity demand of each slope segment is less than or equal to the total electricity recovered, then obtain the predicted power generation of each segment.

[0076] If the sum of the electricity demand for the uphill section is less than or equal to the total electricity recovered, it means that the total electricity recovered can meet the electricity demand of the vehicle traveling on the uphill section. In this case, the electricity consumption during the uphill process is allowed to decrease, which is made up by the electricity consumed during the downhill and the electricity recovered, and the power generation level will not be increased throughout the entire process.

[0077] At this point, the predicted power generation of each segment can be obtained through the vehicle's preset power generation strategy, road segment information, and vehicle configuration information.

[0078] S502: Based on the predicted power generation, the required power consumption, and the current remaining power of the vehicle's battery pack, identify the nearest uphill section of road where the battery pack's power cannot meet the driving power demand as the uphill section to be compensated.

[0079] At this point, the required power consumption, predicted power generation, and current remaining power for each segment are obtained. This allows us to determine the remaining power of the battery pack after each segment is completed, and in other words, to identify which uphill sections the battery pack cannot meet the corresponding power demand.

[0080] For example, consider a road segment with five sections. Sections one, three, and five are non-slope sections, while sections two and four are slope sections. The vehicle's remaining battery power after completing the first section may not be sufficient for the second section, but the power generated in the third section may be sufficient for the fourth. It should be understood that a pre-defined power generation strategy may ensure sufficient power for the entire journey and good overall NVH performance, but it may not meet the power requirements of a specific segment (current technology temporarily increases power generation to meet the demand in a particular segment, but this results in poor NVH performance). Therefore, this situation may occur. In this case, the second section is the uphill section requiring compensation.

[0081] S503: Upgrade the basic power generation level of the uphill section to be compensated and the preceding sections to the first target power generation level, so as to control the vehicle's range extender to generate power at the first target power generation level in the road section corresponding to the first target power generation level; wherein, the first target power generation level corresponds to the target NVH standard.

[0082] To ensure sufficient power supply to the uphill section requiring compensation, the power generation level of this section and preceding it needs to be upgraded, raising the base power generation level (which is lower than the first target power generation level) to the first target power generation level. During subsequent travel, when encountering sections corresponding to the first target power generation level on the uphill section and preceding it, power generation will proceed at the first power generation level. For details regarding the first power generation level, please refer to the information above.

[0083] In this embodiment, although the power generation level is not increased for the entire remaining driving section, the power generation level is increased for specific sections, so that the battery pack's power can meet the driving needs of uphill sections, avoiding the vehicle's poor NVH performance caused by generating power at a high power when the power is insufficient on uphill sections.

[0084] Figure 6 This is a flowchart illustrating another embodiment of the vehicle range extender control method provided in this application.

[0085] Combination Figure 6 In some specific embodiments, after the step of raising the basic power generation level of the uphill section to be compensated and the preceding sections from below the first target power generation level to the first target power generation level, i.e. after step S503 above, the following is included:

[0086] S601: Obtain the remaining battery charge of the battery pack when the previous segment of the uphill section to be compensated is completed, and re-obtain the predicted power generation of the uphill section to be compensated as the corrected predicted power generation.

[0087] During subsequent vehicle operation, after the preceding segment of the uphill section to be compensated is completed, the remaining battery charge is obtained. Although the above embodiment obtained the predicted power generation for the uphill section to be compensated, this uphill section may have undergone an increase in power generation level. Therefore, this step requires further obtaining the predicted power generation based on the corrected power generation level as the revised predicted power generation.

[0088] S602: If the sum of the corrected predicted power generation and the remaining power is less than the power demand corresponding to the uphill section to be compensated, the initial power generation of the range extender in the uphill section to be compensated will be increased to obtain the target power generation; wherein, the initial power generation is determined by a preset power generation strategy, and the range extender generates power at the target power generation in the uphill section to be compensated.

[0089] If the sum of the revised predicted power generation and the remaining power is less than the power demand corresponding to the uphill section to be compensated, it means that the remaining power of the battery pack cannot meet the driving power demand of the uphill section to be compensated. If power generation is carried out at a higher power when the power is low, it will cause poor NVH performance of the vehicle.

[0090] This embodiment compensates for the initial power generation to avoid generating electricity at high power on uphill sections, thereby increasing the power generation more evenly across the entire uphill section to meet the driving power demand. This avoids the situation where generating electricity at high power leads to poor NVH performance of the vehicle. The relevant steps for compensating the initial power generation to obtain the target power generation can refer to the above embodiment and will not be repeated here.

[0091] Figure 7 This is a flowchart illustrating another embodiment of the vehicle range extender control method provided in this application.

[0092] Combination Figure 7 In some specific embodiments, after obtaining the remaining battery power of the battery pack when the previous segment of the uphill section to be compensated is completed, and re-obtaining the predicted power generation of the uphill section to be compensated as the corrected predicted power generation, i.e. after step S601 above, the method includes:

[0093] S701: If the sum of the corrected predicted power generation and the remaining power is less than the power demand corresponding to the uphill section to be compensated, the power generation level of the uphill section to be compensated that is lower than the second target power generation level will be raised to the second target power generation level, so as to control the range extender to generate power at the second target power generation level in the uphill section to be compensated; wherein, the second target power generation level is higher than the first target power generation level.

[0094] If the sum of the revised predicted power generation and the remaining power is less than the power demand corresponding to the uphill section to be compensated, it indicates that the remaining power of the battery pack cannot meet the driving power demand of the uphill section to be compensated. Unlike the previous embodiment, this embodiment does not compensate for the power generation, but rather further upgrades the power generation level of the uphill section to be compensated. That is, it further upgrades the power generation level from below the second target level to the second power generation level.

[0095] It should be understood that by further increasing the power generation level, the vehicle's initial power generation capacity can be higher, generally sufficient to meet the power requirements for uphill driving. Furthermore, this embodiment also maintains increased power generation capacity throughout the entire process, avoiding the problem of poor vehicle NVH performance caused by suddenly generating power at high levels.

[0096] A second aspect of this application provides a control device 20 for a vehicle range extender. Figure 8 This is a structural block diagram of an embodiment of the control device 20 for the vehicle range extender provided in this application.

[0097] Combination Figure 8 The control device 20 for the vehicle range extender includes an acquisition module 21 and a control module 22. The acquisition module 21 acquires road segment information for each segment of the remaining driving route: the segments include sloping sections and non-sloping sections, and the road segment information includes the slope, length, and location of the sloping sections; based on the road segment information, it acquires the vehicle's required electricity consumption in each segment and the total energy recovery amount corresponding to the remaining driving route. The control module 21, if the sum of the required electricity consumption in the sloping sections is greater than the total energy recovery amount, increases the basic power generation level of at least some segments in the remaining driving route to obtain a target power generation level, so as to control the vehicle's range extender to generate electricity based on the target power generation level; wherein, the basic power generation level is determined by a preset power generation strategy. The specific execution methods of the acquisition module 21 and the control module 22 for the above steps can be referred to the relevant content of the above embodiments, and are not specifically limited here.

[0098] A third aspect of this application provides an electronic device, comprising: a processor; and a memory for storing a computer program, wherein the computer program, when executed by the processor, implements the range extender control method in any of the above embodiments.

[0099] Figure 9This is a schematic diagram of the structural framework of an embodiment of the electronic device 500 provided in this application.

[0100] In some specific embodiments, the electronic device 500 includes a central processing unit (CPU) 501 and a read-only memory (ROM) 502. The CPU 501 is a processor, and the ROM 502 is a memory. The CPU 501 can perform various appropriate actions and processes, such as executing the methods described in the above embodiments, based on programs stored in the ROM 502 or programs loaded from storage portion 508 into random access memory (RAM) 503. The RAM 503 also stores various programs and data required for system operation. The CPU 501, ROM 502, and RAM 503 are interconnected via a bus 504. An input / output (I / O) interface 505 is also connected to the bus 504.

[0101] The following components are connected to I / O interface 505: an input section 506 including a keyboard, mouse, etc.; an output section 507 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, 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, modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to I / O interface 505 as needed. Removable media 511, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., are installed on drive 510 as needed so that computer programs read from them can be installed into storage section 508 as needed.

[0102] Specifically, according to embodiments of this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program including a computer program for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 509, and / or installed from removable medium 511. When the computer program is executed by central processing unit (CPU) 501, it performs various functions defined in the system of this application.

[0103] A fourth aspect of this application provides a computer-readable storage medium 40, Figure 10 This is a schematic diagram of the structural framework of an embodiment of the computer-readable storage medium 40 provided in this application.

[0104] Combination Figure 10 The computer-readable storage medium 40 stores a computer program 41, which, when executed by a processor, implements the range extender control method as described in any of the above embodiments.

[0105] It should be noted that the computer-readable medium 40 shown in the embodiments of this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this application, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying a computer-readable computer program. The transmitted data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. The computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, etc., or any suitable combination thereof.

[0106] In summary, based on the vehicle range extender control method, device, equipment, and storage medium provided in this application, the method includes: acquiring road segment information for each segment of the remaining driving route; wherein the segments include sloping sections and non-sloping sections, and the road segment information includes the slope, length, and location of the sloping sections; acquiring the vehicle's required electricity consumption in each segment and the total energy recovery electricity corresponding to the remaining driving route based on the road segment information; if the sum of the required electricity consumption in the sloping sections is greater than the total energy recovery electricity, then increasing the basic power generation level of at least some segments within the remaining driving route to obtain a target power generation level, thereby controlling the vehicle's range extender to generate electricity based on the target power generation level; wherein the basic power generation level is determined by a preset power generation strategy. Therefore, when the energy recovery electricity cannot balance the electricity consumption in the sloping sections, increasing the power generation level generates more electricity throughout the entire route, thereby ensuring the overall electricity demand and avoiding poor NVH performance caused by excessive power generation on uphill sections.

[0107] The above description is merely a preferred exemplary embodiment of this application and is not intended to limit the implementation of this application. Those skilled in the art can easily make corresponding modifications or alterations based on the main concept and spirit of this application. Therefore, the scope of protection of this application should be determined by the scope of protection claimed in the claims.

Claims

1. A method for controlling a vehicle's range extender, characterized in that, include: Obtain road segment information for each segment of the remaining driving route; wherein, the segment includes sloping sections and non-sloping sections, and the road segment information includes slope, length, and location; Based on the road segment information, the required electricity consumption of the vehicle in each of the segments, and the total energy recovery electricity corresponding to the remaining driving segments are obtained; If the sum of the electricity demand for the slope section is greater than the total electricity recovered, then the base power generation level of at least some sections of the remaining driving section is increased to obtain the target power generation level, so as to control the vehicle's range extender to generate electricity based on the target power generation level; wherein, the base power generation level is determined by a preset power generation strategy; The step of increasing the base power generation level of at least some sections of the remaining driving route to obtain the target power generation level includes: obtaining the base power generation level corresponding to the remaining driving route through the preset power generation strategy, and obtaining the current remaining power of the vehicle's battery pack; if the current remaining power is greater than or equal to the preset remaining power, then increasing the base power generation level, which is lower than the first target power generation level, to the first target power generation level; wherein, the first target power generation level corresponds to the preset remaining power and the target NVH standard.

2. The range extender control method according to claim 1, characterized in that, After obtaining the basic power generation level corresponding to the remaining driving segment through the preset power generation strategy, and obtaining the current remaining power of the vehicle's battery pack, the process includes: If the current remaining power is less than the preset remaining power, the basic power generation level, which is lower than the second target power generation level, will be raised to the second target power generation level; wherein the second target power generation level is higher than the first target power generation level.

3. The range extender control method according to claim 1, characterized in that, If the sum of the electricity demand for the slope section is greater than the total electricity recovered, then after the step of increasing the base power generation level of at least a portion of the remaining driving section to obtain the target power generation level, and controlling the vehicle's range extender to generate electricity based on the target power generation level, the following steps are included: The remaining power of the vehicle's battery pack is obtained when the current segment is completed, and the predicted power generation of the next segment is obtained; wherein, the slope segment includes uphill and downhill sections, and the next segment is the uphill section; If the sum of the remaining power and the predicted power generation is less than the power demand of the next segment, the initial power generation of the vehicle's range extender is compensated to obtain the target power generation, so as to control the range extender to generate power at the target power generation in the next segment; wherein the initial power generation is determined by a preset power generation strategy.

4. The range extender control method according to claim 1, characterized in that, The slope section includes uphill sections and downhill sections; After obtaining the vehicle's required electricity consumption in each of the road segments based on the road segment information, and the total energy recovery electricity corresponding to the remaining driving segments, the process includes: If the sum of the electricity demand of the slope sections is less than or equal to the total electricity recovered, then the predicted power generation of each of the slope sections is obtained. Based on the predicted power generation, the required power consumption, and the current remaining power of the vehicle's battery pack, the uphill section closest to the vehicle where the battery pack's power cannot meet the driving power demand is identified as the uphill section to be compensated. The basic power generation level of the uphill section to be compensated and the preceding segments that are lower than the first target power generation level are raised to the first target power generation level, so as to control the vehicle's range extender to generate power at the first target power generation level in the road segment corresponding to the first target power generation level; wherein, the first target power generation level corresponds to the target NVH standard.

5. The range extender control method according to claim 4, characterized in that, After the step of raising the basic power generation level of the uphill section to be compensated and the preceding segments below the first target power generation level to the first target power generation level, the following steps are included: The remaining power of the battery pack is obtained when the previous segment of the uphill road section to be compensated is completed, and the predicted power generation of the uphill road section to be compensated is obtained again as the corrected predicted power generation. If the sum of the corrected predicted power generation and the remaining power is less than the required power consumption corresponding to the uphill section to be compensated, then the initial power generation of the range extender in the uphill section to be compensated is increased to obtain the target power generation. The initial power generation is determined by a preset power generation strategy, and the range extender generates power at the target power generation on the uphill section to be compensated.

6. The range extender control method according to claim 5, characterized in that, After obtaining the remaining battery charge of the battery pack when the previous segment of the uphill section to be compensated has been completed, and re-obtaining the predicted power generation of the uphill section to be compensated as the corrected predicted power generation, the process includes: If the sum of the corrected predicted power generation and the remaining power generation is less than the power demand corresponding to the uphill section to be compensated, then the power generation level in the uphill section to be compensated that is lower than the second target power generation level will be raised to the second target power generation level, so as to control the range extender to generate power at the second target power generation level in the uphill section to be compensated; wherein, the second target power generation level is higher than the first target power generation level.

7. A control device for a vehicle range extender, characterized in that, include: The acquisition module is used to acquire road segment information of the vehicle in each segment of the remaining driving route: wherein the segment includes sloping sections and non-sloping sections, and the road segment information includes the slope, length and location of the sloping section; based on the road segment information, the required power consumption of the vehicle in each segment and the total energy recovery power corresponding to the remaining driving route are acquired; A control module is configured to, if the sum of the required electricity consumption for the slope section is greater than the total energy recovery electricity, increase the base power generation level of at least a portion of the remaining driving section to obtain a target power generation level, so as to control the vehicle's range extender to generate electricity based on the target power generation level; wherein, the base power generation level is determined by a preset power generation strategy; increasing the base power generation level of at least a portion of the remaining driving section to obtain the target power generation level includes: obtaining the base power generation level corresponding to the remaining driving section through the preset power generation strategy, and obtaining the current remaining power of the vehicle's battery pack; if the current remaining power is greater than or equal to a preset remaining power, then increasing the base power generation level from below the first target power generation level to the first target power generation level; wherein, the first target power generation level corresponds to the preset remaining power and the target NVH standard.

8. An electronic device, characterized in that, include: processor; A memory for storing a computer program that, when executed by the processor, implements the range extender control method according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, which, when executed by a processor, implements the range extender control method as described in any one of claims 1-6.

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