Vehicle range extender control method and device, electronic equipment and computer readable storage medium

Abstract

The invention relates to the technical field of vehicle range extending control, and discloses a control method and device for a vehicle range extender, electronic equipment and a computer readable storage medium. If yes, the range extender is controlled to work at the preset initial rotating speed and the preset initial torque for power generation; the current target NVH standard of the vehicle is obtained, and the current NVH performance of the vehicle is obtained; wherein the target NVH standard is preset; and when it is detected that the current NVH performance does not meet the current target NVH standard, the range extender is controlled to adjust the preset initial rotating speed and / or the preset initial torque, so that the current NVH performance meets the current target NVH standard. Therefore, the rotating speed and / or the torque of the range extender are / is adjusted according to the relation between the current NVH performance and the current target NVH standard, the current NVH performance can meet the current target NVH standard, and then the NVH performance of power generation of the vehicle under the idling working condition is improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle range extender control, and in particular to a control method, device, electronic device and computer-readable storage medium for a vehicle range extender. Background Art

[0002] Range-extended new energy vehicles can generate electricity through the range extender, which can directly drive the drive motor or be imported into the battery pack for storage. The vehicle's operating conditions can include driving conditions and idling conditions, and different control strategies are required for the range extender under different conditions.

[0003] At present, when the vehicle is in driving condition, the power generation of the range extender is determined according to the vehicle speed, and the speed of the range extender is further determined according to the power and speed curve. However, under idling condition, the power and speed curve of the driving condition is still used to control the range extender, which will lead to poor NVH (Noise, Vibration, Harshness) performance of the vehicle. Summary of the invention

[0004] In view of the above problems, the present application provides a control method, device, electronic device and computer-readable storage medium for a vehicle range extender. The speed and / or torque of the range extender are adjusted by adjusting the relationship between the current NVH performance and the current target NVH standard, so that the current NVH performance meets the current target NVH standard, thereby improving the NVH performance of the vehicle when generating electricity under idle conditions.

[0005] In a first aspect, the present application provides a control method for a vehicle range extender, comprising: when it is detected that the vehicle is in an idle condition and the vehicle needs to generate electricity through the range extender, the range extender is controlled to generate electricity at a preset initial speed and a preset initial torque; the current target NVH standard of the vehicle is obtained, and the current NVH performance of the vehicle is obtained; wherein the target NVH standard is preset; and when it is detected that the current NVH performance does not meet the current target NVH standard, the range extender is controlled to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard.

[0006] In some specific embodiments, the step of controlling the range extender to adjust a preset initial speed and / or a preset initial torque so that the current NVH performance meets the current target NVH standard includes: when it is detected that the range extender has a target required power generation, controlling the range extender to adjust the preset initial speed and the preset initial torque so that the current NVH performance meets the current target NVH standard, and the power generation power of the range extender is the target required power generation power; when it is detected that the range extender does not have the target required power generation power, controlling the range extender to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard.

[0007] In some specific embodiments, when it is detected that the range extender has a target required power generation power, the range extender is controlled to adjust a preset initial speed and a preset initial torque so that the current NVH performance meets the current target NVH standard, and the power generation power of the range extender is the target required power generation power. The steps include: when it is detected that the range extender has a target required power generation power, a first target power point that meets the current target oil-to-electricity conversion rate standard of the vehicle and the target required power generation power is determined; wherein the first target power point includes a target speed and a target torque; and the range extender is controlled to adjust the preset initial speed and the preset initial torque within a target speed range and a target torque range corresponding to the first target power point.

[0008] In some specific embodiments, if it is detected that the range extender does not have the target required power generation power, the steps of controlling the range extender to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard include: if it is detected that the range extender does not have the target required power generation power, obtaining the current remaining power and the target remaining power of the vehicle's battery pack, and determining the target power generation range of the range extender based on the power difference between the current remaining power and the target remaining power; controlling the range extender to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard, and the power generation power of the range extender is within the target power generation power range.

[0009] In some specific embodiments, if it is detected that the range extender does not have the target required power generation power, the step of controlling the range extender to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard includes: if it is detected that the range extender does not have the target required power generation power, controlling the range extender to adjust the preset initial speed within the target speed range and maintain the preset initial torque so that the current NVH performance meets the current target NVH standard; if it is detected that the range extender cannot meet the current target NVH standard when operating within the target speed range, controlling the range extender to adjust the preset initial speed within the target speed range while adjusting the preset initial torque so that the current NVH performance meets the current target NVH standard.

[0010] In some specific embodiments, if it is detected that the range extender does not have the target required power generation power, the steps of controlling the range extender to adjust a preset initial speed within a target speed range and maintain a preset initial torque so that the current NVH performance meets the current target NVH standard include: if it is detected that the range extender does not have the target required power generation power, determining a target speed range that meets the current target oil-to-electricity conversion rate standard of the vehicle; controlling the range extender to adjust a preset initial speed within the target speed range and maintain a preset initial torque so that the current NVH performance meets the current target NVH standard.

[0011] In some specific embodiments, after the step of controlling the range extender to adjust a preset initial speed and maintain a preset initial torque within a target speed range so that the current NVH performance meets the current target NVH standard, the following steps are included: when it is detected that the current NVH performance does not meet the current target NVH standard when the range extender is operating at a speed within the target speed range and at a preset initial torque, the oil-to-electricity conversion rate standard is lowered to update the current target oil-to-electricity conversion rate standard; and the step of re-executing the target speed range that meets the current target oil-to-electricity conversion rate standard of the vehicle is determined.

[0012] A second aspect of the present application provides a control device for a vehicle range extender, including an acquisition module for acquiring a current target NVH standard of the vehicle and a current NVH performance of the vehicle, wherein the target NVH standard is preset; a control module for detecting that the vehicle is in an idle condition and the vehicle needs to generate electricity through the range extender, and then controlling the range extender to generate electricity at a preset initial speed and a preset initial torque; and for detecting that the current NVH performance does not meet the current target NVH standard, and then controlling the range extender to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard.

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

[0014] A fourth aspect of the present application provides 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, a control method for a vehicle range extender as described in any one of the above items is implemented.

[0015] The present application has at least the following beneficial technical effects: Based on the control method, device, electronic device and computer-readable storage medium of the vehicle range extender provided by the present application, the method includes: when it is detected that the vehicle is in an idle condition and the vehicle needs to generate electricity through the range extender, the range extender is controlled to generate electricity at a preset initial speed and a preset initial torque; the current target NVH standard of the vehicle is obtained, and the current NVH performance of the vehicle is obtained; wherein the target NVH standard is preset; when it is detected that the current NVH performance does not meet the current target NVH standard, the range extender is controlled to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard. Therefore, by adjusting the speed and / or torque of the range extender according to the relationship between the current NVH performance and the current target NVH standard, the current NVH performance can meet the current target NVH standard, thereby improving the NVH performance of the vehicle generating electricity under idle conditions.

[0016] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are only used to illustrate the embodiments and are not to be considered as limiting the present application. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings. In the accompanying drawings:

[0018] Figure 1 It is a flow chart of an embodiment of a control method for a vehicle range extender provided by the present application;

[0019] Figure 2 is a flow chart of another embodiment of the control method of the vehicle range extender provided by the present application;

[0020] Figure 3 It is a flow chart of another embodiment of the control method of the vehicle range extender provided by the present application;

[0021] Figure 4 It is a characteristic diagram of the range extender;

[0022] Figure 5 It is a flow chart of another embodiment of the control method of the vehicle range extender provided by the present application;

[0023] Figure 6 It is a flow chart of another embodiment of the control method of the vehicle range extender provided by the present application;

[0024] Figure 7 It is a flow chart of another embodiment of the control method of the vehicle range extender provided by the present application;

[0025] Figure 8 It is a flow chart of another embodiment of the control method of the vehicle range extender provided by the present application;

[0026] Fig. 9 It is a structural block diagram of an embodiment of a control device for a vehicle range extender provided by the present application;

[0027] Fig.10 It is a schematic diagram of the structural framework of an embodiment of the electronic device provided by the present application;

[0028] Fig.11 It is a schematic diagram of the structural framework of an embodiment of the computer-readable storage medium provided by the present application. DETAILED DESCRIPTION

[0029] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0030] If there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot 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] The first aspect of the present application provides a control method for a vehicle range extender. Figure 1 1 is a flow chart of an embodiment of a control method for a vehicle range extender provided by the present application. Figure 1 , the method comprises the following steps:

[0032] S11: When it is detected that the vehicle is in an idling condition and the vehicle needs to generate electricity through the range extender, the range extender is controlled to generate electricity at a preset initial speed and a preset initial torque.

[0033] In some application scenarios, if the vehicle is stationary or is moving forward but the speed is less than a preset speed, the vehicle is considered to be in an idling state. The preset speed may be 3 km / h, but is not limited to this.

[0034] When the battery pack of the vehicle is lower than a threshold level, the range extender can be automatically controlled to generate electricity, or the range extender can start to generate electricity when receiving a power generation instruction from the user. Therefore, when the battery pack of the vehicle is lower than the threshold level, or when receiving a power generation instruction from the user, it can be considered that the vehicle needs to generate electricity through the range extender.

[0035] The preset initial speed and the preset initial torque can be preset by a certain rule, or obtained in real time by combining the current data with the preset rule. The preset initial speed is the speed of the engine of the range extender, and the preset initial torque is the torque of the engine of the range extender. At this time, the range extender is controlled to work at the preset initial speed and the preset initial torque, that is, the engine of the range extender is controlled to work at the preset initial speed and the preset initial torque to generate electricity.

[0036] S12: Obtain the current target NVH standard of the vehicle, and obtain the current NVH performance of the vehicle; wherein the target NVH standard is preset.

[0037] Specifically, multiple target NVH standards can be preset, and one target NVH standard can be selected at the current moment as the current target NVH standard of the vehicle. The current NVH performance of the vehicle, that is, the NVH performance of the vehicle at the current moment, can reflect the vibration, noise and other performances of the vehicle.

[0038] It should be understood that the current NVH performance of the vehicle can be measured by certain characteristic values, and the type of characteristic values ​​can refer to the values ​​used in the prior art to measure the NVH performance of the vehicle. Under the target NVH standard, there are certain requirements for the NVH performance of the vehicle, and the characteristic values ​​of the NVH of the vehicle need to be within a certain range to meet the target NVH performance.

[0039] S13: If it is detected that the current NVH performance does not meet the current target NVH standard, the range extender is controlled to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard.

[0040] In combination with the above, when the current NVH performance of the vehicle does not meet the current target NVH standard of the vehicle, the characteristic value measuring the current NVH performance of the vehicle does not meet the preset standard. For example, when the current NVH performance of the vehicle is measured by the decibel value, if the current NVH performance of the vehicle does not meet the current NVH standard, the decibel value is too large.

[0041] If the current NVH performance does not meet the current target NVH standard, it means that the vehicle's NVH performance is poor and the vehicle's vibration and noise are serious. Since the range extender will cause greater vibration and noise to the vehicle as a whole during operation, the vehicle's NVH performance can generally be adjusted by adjusting the range extender's operating state.

[0042] In this embodiment, the technical means for adjusting the working state of the range extender is: controlling the range extender to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard. That is, when the range extender works at the preset initial speed and the preset initial torque, the range extender is controlled to adjust the preset initial speed, or the range extender is controlled to adjust the preset initial torque, or the range extender is controlled to adjust the preset initial speed and the preset initial torque at the same time. Moreover, the adjustment target of adjusting the speed and / or torque is: to make the current NVH performance meet the current target NVH standard, that is, the adjustment direction of adjusting the speed and / or torque is determined, so as to ultimately make the NVH performance of the vehicle reach the current target NVH standard.

[0043] In summary, through the relationship between the current NVH performance and the current target NVH standard, that is, when the current NVH performance does not meet the current target NVH standard of the vehicle, adjusting the speed and / or torque of the range extender can make the current NVH performance meet the current target NVH standard, thereby improving the NVH performance of the vehicle's power generation under idle conditions. Compared with the prior art that controls the range extender through the power and speed curve under driving conditions, the method provided in this embodiment can significantly improve the NVH performance of the vehicle's power generation under idle conditions.

[0044] Figure 2 FIG. 1 is a flow chart of another embodiment of the control method of the vehicle range extender provided by the present application. Figure 2 In some specific embodiments, the step of controlling the range extender to adjust a preset initial speed and / or a preset initial torque so that the current NVH performance meets the current target NVH standard includes:

[0045] S21: If it is detected that the range extender has a target required power generation power, the range extender is controlled to adjust a preset initial speed and a preset initial torque so that the current NVH performance meets the current target NVH standard and the power generation power of the range extender is the target required power generation power.

[0046] It should be understood that when the vehicle is operating and generating electricity under idling conditions, a constant power generation power may be set to generate electricity at the constant power generation power throughout the power generation process. Or multiple constant power generation powers may be set, corresponding to multiple power generation time periods of the power generation process, to maintain different power generation powers in different power generation time periods. Among them, whether one or more constant power generation powers are set, the vehicle has a target required power generation power at this time, that is, the vehicle needs to work at a constant target required power generation power. And, when setting a constant power generation power, the target required power generation power is one, corresponding to the power generation process of the entire range extender. When setting multiple constant power generation powers, the target required power generation power is multiple, corresponding to multiple power generation time periods of the power generation process.

[0047] In a working scenario where the range extender has a target required power generation, in order to ensure that the power generation of the range extender is maintained at the target power generation, the torque needs to be adjusted while adjusting the speed. Therefore, in this application scenario, the control strategy for the range extender is: control the range extender to adjust the preset initial speed and the preset initial torque so that the current NVH performance meets the current target NVH standard, and the power generation of the range extender is the target required power generation. At this time, the process of adjusting the preset initial speed and the preset initial torque of the range extender needs to meet two goals. The first goal is to make the current NVH performance meet the current target NVH standard, and the second goal is to make the power generation of the range extender the target required power generation.

[0048] S22: If it is detected that the range extender does not have the target required power generation power, the range extender is controlled to adjust a preset initial speed and / or a preset initial torque so that the current NVH performance meets the current target NVH standard.

[0049] It should be understood that there is no restriction on the execution order between step S21 and step S22 in this embodiment.

[0050] The above describes the application scenario where the range extender has a target power demand, that is, the application scenario where the range extender needs to work and generate power according to a constant target power demand. However, in other application scenarios, the range extender does not need to work according to a constant target power demand, that is, the power can change at any time during the operation, and in this case, the range extender does not have a target power demand.

[0051] In this application scenario, the control strategy for the range extender is: control the range extender to adjust the preset initial speed and / or preset initial torque so that the current NVH performance meets the current target NVH standard. That is, at this time, the speed of the range extender can be adjusted separately, the torque of the range extender can be adjusted separately, or the speed and torque of the range extender can be adjusted simultaneously. Under this strategy, there is no need to make the power generation of the range extender constant, and only one adjustment target needs to be met: to make the current NVH performance meet the current target NVH standard.

[0052] Figure 3 FIG. 1 is a flow chart of another embodiment of the control method of the vehicle range extender provided by the present application. Figure 3 In some specific embodiments, when it is detected that the range extender has a target required power generation power, the range extender is controlled to adjust a preset initial speed and a preset initial torque so that the current NVH performance meets the current target NVH standard, and the power generation power of the range extender is the target required power generation power, that is, the above step S21, includes:

[0053] S31: When it is detected that the range extender has a target required power generation power, a first target power point that meets the vehicle's current target oil-to-electricity conversion rate standard and the target required power generation power is determined; wherein the first target power point includes a target speed and a target torque.

[0054] Figure 4 This is a characteristic diagram of the range extender. Figure 4 , the horizontal axis represents the speed of the range extender, and the vertical axis represents the torque of the range extender. Figure 4 The point formed in the middle is the power point (because the product of the speed and torque of the range extender can get the power of the range extender).

[0055] exist Figure 4 Different closed curves 11 are shown in FIG. 1 , and the oil-to-electricity conversion rate of the power points on each closed curve 11 is the same, and the oil-to-electricity conversion rate of the power points within the same closed curve 11 is higher than a certain value. Therefore, the closed curve 11 can represent the power curve corresponding to the target oil-to-electricity conversion rate standard, and the power point that meets the target oil-to-electricity conversion rate is the power point within the closed curve 11.

[0056] Among them, multiple target oil-to-electricity conversion rate standards can be set. Figure 4 The three closed curves 11 set in represent the power curves corresponding to the three target oil-to-electricity conversion rate standards. The current target oil-to-electricity conversion rate standard of the vehicle is the target oil-to-electricity conversion rate standard corresponding to the vehicle at the current moment.

[0057] Combination Figure 4 There may be multiple power points that meet the target required power generation power, which are set as the first power point set. There may also be multiple power points that meet the current target oil-to-electricity conversion rate standard, which are set as the second power point set. At this time, the power points that meet both the current target oil-to-electricity conversion rate standard of the vehicle and the target required power generation power, that is, the overlapped part of the first power point set and the second power point set, are named the first target power points in this embodiment.

[0058] S32: Control the range extender to adjust a preset initial speed and a preset initial torque within a target speed range and a target torque range corresponding to the first target power point.

[0059] Based on the above content, it can be known that the number of first target power points is generally multiple, so the speed and torque corresponding to the first target power point constitute a speed range and a torque range respectively, which are the target speed range and the target torque range respectively.

[0060] Therefore, when the range extender is controlled within the target speed range and the target torque range corresponding to the first target power point and the preset initial speed and the preset initial torque are adjusted, the speed and torque of the range extender will be respectively within the target speed range and the target torque range, so that the oil-to-electricity conversion rate of the range extender can meet both the current target oil-to-electricity conversion rate standard and the target required power generation power.

[0061] Through this embodiment, not only can the power generation power of the range extender be kept constant at the target required power, but the oil-to-electricity conversion rate of the range extender can also meet the preset standard, thereby improving the fuel consumption performance of the vehicle and reducing the fuel consumption of the vehicle.

[0062] Figure 5 FIG. 1 is a flow chart of another embodiment of the control method of the vehicle range extender provided by the present application. Figure 5 In some specific embodiments, if it is detected that the range extender does not have the target required power generation, the step of controlling the range extender to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard, that is, the above step S22, includes:

[0063] S41: If it is detected that the range extender does not have the target required power generation power, the current remaining power and the target remaining power of the battery pack of the vehicle are obtained, and the target power generation power range of the range extender is determined based on the power difference between the current remaining power and the target remaining power.

[0064] When it is detected that the range extender does not have the target required power generation, it means that the power generation of the range extender can be continuously changed. However, in some application scenarios, even if the power generation of the range extender is not required to be constant, the power generation needs to be maintained within a certain power range.

[0065] In this embodiment, the target power generation range of the range extender is determined based on the relationship between the current remaining power and the target remaining power, that is, the target power generation range of the range extender is determined based on the power difference between the current remaining power and the target remaining power.

[0066] It should be understood that the target remaining power can be pre-set through preset rules, and different target remaining powers can be set in different application scenarios. During the vehicle's power generation process, the target remaining power is the power that the battery pack will eventually reach. The difference between the current remaining power and the target remaining power will reflect the amount of charging required during the current power generation process. When the power difference is large, it means that a large amount of power generation is required. At this time, the minimum value of the target power generation power can be set larger to meet the larger power generation demand. When the power difference is small, the maximum value of the target power generation power range can be set smaller to avoid poor NVH performance caused by high-power power generation.

[0067] S42: Controlling the range extender to adjust a preset initial speed and / or a preset initial torque so that the current NVH performance meets the current target NVH standard and the power generation power of the range extender is within the target power generation power range.

[0068] After determining the target power range, when controlling the range extender to adjust the preset initial speed and / or preset initial torque, the following two conditions need to be met: the first is that the current NVH performance meets the current target NVH standard, and the second is that the power generation of the range extender is within the target power generation range. When these two conditions are met, the NVH performance of the vehicle will be better, and the power generation of the vehicle will be suitable for the power demand of the vehicle.

[0069] Figure 6 FIG. 1 is a flow chart of another embodiment of the control method of the vehicle range extender provided by the present application. Figure 6 In some specific embodiments, if it is detected that the range extender does not have the target required power generation, the step of controlling the range extender to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard, that is, the above step S22, includes:

[0070] S51: If it is detected that the range extender does not have the target required power generation power, the range extender is controlled to adjust a preset initial speed within a preset target speed range and maintain a preset initial torque so that the current NVH performance meets the current target NVH standard.

[0071] In this embodiment, the specific control method for the range extender is defined when the range extender does not have the target required power generation. That is, the range extender is first controlled to adjust the preset initial speed within the preset target speed range and maintain the preset initial torque so that the current NVH performance meets the current target NVH standard. The preset target speed range can be set by a certain rule, so that the range extender can be applied at the current moment.

[0072] It should be understood that, although in most scenarios, the NVH performance of the vehicle will improve when the speed of the range extender is reduced, there are also cases where the NVH performance of the vehicle improves when the speed of the range extender is increased. Therefore, in this step, although only the speed is adjusted, the power generation of the range extender may also increase or decrease.

[0073] S52: If it is detected that the range extender cannot meet the current target NVH standard when operating within the preset target speed range, the range extender is controlled to adjust the preset initial speed within the preset target speed range while adjusting the preset initial torque so that the current NVH performance meets the current target NVH standard.

[0074] When the speed adjustment within the preset target speed range of the range extender cannot meet the current target NVH standard, it means that the torque of the range extender needs to be adjusted to meet the current target NVH standard. Therefore, at this time, the range extender is controlled to adjust the preset initial speed within the preset target speed range while adjusting the preset initial torque so that the current NVH performance meets the current target NVH standard.

[0075] Since the NVH performance of the vehicle is greatly affected by the speed of the range extender, the vehicle's NVH performance can be made to meet the current target NVH standard faster and more effectively by adjusting the speed first and then adjusting the torque.

[0076] In this embodiment, whether the speed is adjusted first or the torque is adjusted after the speed is adjusted, only one adjustment target is defined, that is, the current NVH performance meets the current target NVH standard. In combination with the above content, a condition can also be defined at this time, that is, the power generation power of the range extender is within the target power generation power range. At this time, the above step S51 becomes: if it is detected that the range extender does not have the target required power generation power, the range extender is controlled to adjust the preset initial speed and maintain the preset initial torque within the preset target speed range, so that the current NVH performance meets the current target NVH standard, and the power generation power of the range extender is within the target power generation power range. The above step S52 becomes: if it is detected that the range extender cannot meet the current target NVH standard when operating within the preset target speed range, the range extender is controlled to adjust the preset initial speed and the preset initial torque within the preset target speed range, so that the current NVH performance meets the current target NVH standard, and the power generation power of the range extender is within the target power generation power range.

[0077] Figure 7 FIG. 1 is a flow chart of another embodiment of the control method of the vehicle range extender provided by the present application. Figure 7 In some specific embodiments, if it is detected that the range extender does not have the target required power generation, the step of controlling the range extender to adjust the preset initial speed within the target speed range and maintain the preset initial torque so that the current NVH performance meets the current target NVH standard, that is, the above step S51, includes:

[0078] S61: If it is detected that the range extender does not have the target required power generation power, a preset target speed range that meets the current target oil-to-electricity conversion rate standard of the vehicle is determined.

[0079] In this step, a specific method for obtaining the preset target speed range is defined, that is, the preset target speed range is obtained by using the current target oil-to-electricity conversion rate standard.

[0080] Likewise, combining Figure 4Under the current target oil-to-electricity conversion rate standard, there will be a corresponding speed range. At this time, the speed range can be used as the preset target speed range corresponding to the current target oil-to-electricity conversion rate standard.

[0081] S62: Control the range extender to adjust a preset initial speed within a preset target speed range and maintain a preset initial torque, so that the current NVH performance meets the current target NVH standard.

[0082] When the preset target speed range is determined by the current target oil-to-electricity conversion rate standard, the speed control of the range extender can be performed based on the preset target speed range.

[0083] Figure 8 FIG. 1 is a flow chart of another embodiment of the control method of the vehicle range extender provided by the present application. Figure 8 Based on the contents of the above embodiments, in some specific embodiments, after the step of controlling the range extender to adjust the preset initial speed within the preset target speed range and maintain the preset initial torque so that the current NVH performance meets the current target NVH standard, that is, after the above step S62, the following steps are included:

[0084] S71: When it is detected that the range extender is operating at a speed within a preset target speed range and a preset initial torque, and the current NVH performance does not meet the current target NVH standard, the oil-to-electricity conversion rate standard is reduced to update the current target oil-to-electricity conversion rate standard.

[0085] After the preset target speed range is determined by the current target oil-to-electricity conversion rate standard, if the speed is adjusted within the preset target speed range, the current NVH performance cannot meet the current target NVH standard. Then, in order to make the current NVH performance of the vehicle meet the current target NVH standard, it can be achieved by changing the torque or changing the preset target speed range.

[0086] In this embodiment, the oil-to-electricity conversion rate standard is lowered to update the current target oil-to-electricity conversion rate standard, thereby updating the preset target speed range. Figure 4 , a smaller closed curve 11 corresponds to a higher target oil-to-electricity conversion rate standard and a smaller preset target speed range. A larger closed curve 11 corresponds to a lower target oil-to-electricity conversion rate standard and a larger preset target speed range. Therefore, the updated current target conversion rate standard will correspond to a larger preset target speed range.

[0087] S72: Re-execute the step of determining a preset target speed range that meets the current target oil-to-electricity conversion rate standard of the vehicle.

[0088] In combination with the above content, the preset target speed range has been updated at this time, and is larger than the preset target speed range before the update. Therefore, if the step of determining the preset target speed range that meets the current target oil-to-electricity conversion rate standard of the vehicle is re-executed, that is, the above step S61 is re-executed, it is possible to make the current NVH performance of the vehicle meet the current target NVH standard.

[0089] A second aspect of the present application provides a control device 10 for a vehicle range extender, Fig. 9 It is a structural block diagram of an embodiment of a control device 10 for a vehicle range extender provided in the present application.

[0090] Combination Fig. 9 , the control device of the vehicle range extender includes an acquisition module 11 and a control module 12. The acquisition module 11 is used to obtain the current target NVH standard of the vehicle and the current NVH performance of the vehicle; wherein the target NVH standard is preset. The control module 12 is used to detect that the vehicle is in an idle condition and the vehicle needs to generate electricity through the range extender, and then control the range extender to generate electricity at a preset initial speed and a preset initial torque; and is used to detect that the current NVH performance does not meet the current target NVH standard, and then control the range extender to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard. Regarding the specific execution method of the acquisition module 11 and the control module 12 for the above steps, reference can be made to the contents of the above embodiments, and no further description will be given.

[0091] A third aspect of the present application provides an electronic device, comprising: a processor; and a memory for storing a computer program, which, when executed by the processor, implements the control method of the vehicle range extender in the above-mentioned embodiment.

[0092] Fig.10 It is a schematic diagram of the structural framework of an embodiment of the electronic device 500 provided in the present application.

[0093] In some specific embodiments, the electronic device 500 includes a central processing unit (CPU) 501 and a read-only memory (ROM) 502, wherein the CPU 501 is a processor and the ROM 502 is a memory. The CPU 501 can perform various appropriate actions and processes according to the program stored in the ROM 502 or the program loaded from the storage part 508 to the random access memory (RAM) 503, such as executing the method in the above embodiment. In the RAM 503, various programs and data required for system operation are also stored. The CPU 501, the ROM 502 and the RAM 503 are connected to each other via a bus 504. The input / output (I / O) interface 505 is also connected to the bus 504.

[0094] 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 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 therefrom is installed into the storage section 508 as needed.

[0095] 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 includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 509, and / or installed from a removable medium 511. When the computer program is executed by a central processing unit (CPU) 501, various functions defined in the system of the present application are executed.

[0096] A fourth aspect of the present application provides a computer-readable storage medium 40, Fig.11It is a schematic diagram of the structural framework of an embodiment of the computer-readable storage medium 40 provided in the present application.

[0097] The computer readable storage medium 40 stores a computer program 41 , and when the computer program 41 is executed by the processor, the control method of the vehicle range extender in any of the above embodiments is implemented.

[0098] It should be noted that the computer-readable medium 40 shown in the embodiment of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can 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 disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it. In the present application, a computer-readable signal medium can include a data signal propagated in a baseband or as a part of a carrier wave, wherein a computer-readable computer program is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which may send, propagate, or transmit programs for use by or in conjunction with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0099] In summary, based on the control method, device, electronic device and computer-readable storage medium of the vehicle range extender provided by the present application, the method includes: when it is detected that the vehicle is in an idle condition and the vehicle needs to generate electricity through the range extender, the range extender is controlled to generate electricity at a preset initial speed and a preset initial torque; the current target NVH standard of the vehicle is obtained, and the current NVH performance of the vehicle is obtained; wherein the target NVH standard is preset; when it is detected that the current NVH performance does not meet the current target NVH standard, the range extender is controlled to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard. Therefore, by adjusting the speed and / or torque of the range extender according to the relationship between the current NVH performance and the current target NVH standard, the current NVH performance can meet the current target NVH standard, thereby improving the NVH performance of the vehicle generating electricity under idle conditions.

[0100] The above content is only a preferred exemplary embodiment of the present application and is not intended to limit the implementation scheme of the present application. A person skilled in the art can easily make corresponding changes or modifications based on the main concept and spirit of the present application. Therefore, the scope of protection of the present application shall be based on the scope of protection required by the claims.

Claims

1. A control method for a vehicle range extender, characterized in that: include: When it is detected that the vehicle is in an idling condition and the vehicle needs to generate electricity through the range extender, the range extender is controlled to generate electricity at a preset initial speed and a preset initial torque; Obtaining a current target NVH standard of the vehicle, and obtaining a current NVH performance of the vehicle; wherein the target NVH standard is preset; If it is detected that the current NVH performance does not meet the current target NVH standard, the range extender is controlled to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard.

2. The control method of a vehicle range extender according to claim 1, characterized in that: The step of controlling the range extender to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard comprises: When it is detected that the range extender has a target required power generation power, the range extender is controlled to adjust the preset initial speed and the preset initial torque so that the current NVH performance meets the current target NVH standard and the power generation power of the range extender is the target required power generation power; If it is detected that the range extender does not have the target required power generation power, the range extender is controlled to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard.

3. The control method of the vehicle range extender according to claim 2, characterized in that: When it is detected that the range extender has a target required power generation power, the step of controlling the range extender to adjust the preset initial speed and the preset initial torque so that the current NVH performance meets the current target NVH standard and the power generation power of the range extender is the target required power generation power comprises: When it is detected that the range extender has a target required power generation power, a first target power point that satisfies the current target oil-to-electricity conversion rate standard of the vehicle and the target required power generation power is determined; wherein the first target power point includes a target speed and a target torque; The range extender is controlled to adjust the preset initial speed and the preset initial torque within a target speed range and a target torque range corresponding to the first target power point.

4. The control method of a vehicle range extender according to claim 2, characterized in that: When it is detected that the range extender does not have the target required power generation power, the step of controlling the range extender to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard includes: If it is detected that the range extender does not have the target required power generation power, the current remaining power and the target remaining power of the battery pack of the vehicle are obtained, and the target power generation power range of the range extender is determined based on the power difference between the current remaining power and the target remaining power; The range extender is controlled to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard and the power generation power of the range extender is within the target power generation power range.

5. The control method of a vehicle range extender according to claim 2, characterized in that: When it is detected that the range extender does not have the target required power generation power, the step of controlling the range extender to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard includes: When it is detected that the range extender does not have the target required power generation power, the range extender is controlled to adjust the preset initial speed within a preset target speed range and maintain the preset initial torque so that the current NVH performance meets the current target NVH standard; If it is detected that the range extender cannot meet the current target NVH standard when operating within the preset target speed range, the range extender is controlled to adjust the preset initial speed within the preset target speed range while adjusting the preset initial torque so that the current NVH performance meets the current target NVH standard.

6. The control method of the vehicle range extender according to claim 5, characterized in that: When it is detected that the range extender does not have the target required power generation power, the step of controlling the range extender to adjust the preset initial speed within a preset target speed range and maintain the preset initial torque so that the current NVH performance meets the current target NVH standard includes: If it is detected that the range extender does not have the target required power generation power, a preset target speed range that meets the current target oil-to-electricity conversion rate standard of the vehicle is determined; The range extender is controlled to adjust the preset initial speed within the preset target speed range and maintain the preset initial torque so that the current NVH performance meets the current target NVH standard.

7. The control method of a vehicle range extender according to claim 6, characterized in that: After the step of controlling the range extender to adjust the preset initial speed within a preset target speed range and maintain the preset initial torque so that the current NVH performance meets the current target NVH standard, the method includes: When it is detected that the range extender is operating at a speed within the preset target speed range and at the preset initial torque, and the current NVH performance does not meet the current target NVH standard, the oil-to-electricity conversion rate standard is reduced to update the current target oil-to-electricity conversion rate standard; The step of determining a preset target speed range that meets the current target oil-to-electricity conversion rate standard of the vehicle is re-executed.

8. A control device for a vehicle range extender, characterized in that: An acquisition module, used for acquiring a current target NVH standard of the vehicle and acquiring a current NVH performance of the vehicle; wherein the target NVH standard is preset; A control module is used to detect that the vehicle is in an idle condition and the vehicle needs to generate electricity through the range extender, and then control the range extender to generate electricity at a preset initial speed and a preset initial torque; and is used to detect that the current NVH performance does not meet the current target NVH standard, and then control the range extender to adjust the preset initial speed and / or the preset initial torque so that the current NVH performance meets the current target NVH standard.

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

10. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by the processor, the control method of the vehicle range extender according to any one of claims 1 to 8 is implemented.

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