A hybrid vehicle beat frequency noise control method and related equipment

Abstract

The present application discloses a method for controlling a hybrid vehicle to avoid beat frequency noise and related equipment. The method includes: obtaining the main excitation frequency of the engine and the maximum speed of the fan; controlling the engine speed and / or the fan speed according to the main excitation frequency of the engine, the maximum speed of the fan and the preset frequency difference, so that the frequency difference between the main excitation frequency and the fan rotation frequency is greater than the preset frequency difference. The method for controlling a hybrid vehicle to avoid beat frequency noise proposed in the embodiment of the present application obtains the main excitation frequency of the engine and the maximum speed of the fan, and obtains the relationship between the engine rotation frequency and the fan rotation frequency corresponding to the current engine speed according to the preset frequency difference, and adjusts the engine speed or the fan speed, so that the frequency difference between the main excitation frequency and the fan rotation frequency is greater than the preset frequency difference, effectively avoiding the occurrence of beat frequency problems, and adjusting the fan speed and the engine speed in real time according to the selected charging operating point, while ensuring the charging and fan heat dissipation requirements.

Description

Technical Field

[0001] The present invention relates to the field of vehicle noise control, and more specifically, to a method for controlling beat frequency noise of a hybrid vehicle and related equipment. Background Art

[0002] When a hybrid vehicle is idling and charging, the engine and fan speeds are not fixed due to different power generation and heat dissipation requirements. When the frequency of the engine's second order and the fan speed fundamental frequency are close, rhythmic intermittent noise and vibration are likely to occur, and the NVH experience is extremely poor, which is unacceptable. The existing frequency avoidance method is for traditional fuel vehicles. The idle engine speed of traditional vehicles is fixed, and the fan speed is easy to avoid. However, hybrid vehicles have different power generation requirements, corresponding to different engine speeds, and are more likely to produce beat frequencies with the fan. Summary of the invention

[0003] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further described in detail in the Detailed Description of the Invention section. The Summary of the Invention section of this application does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0004] In a first aspect, the present application proposes a method for controlling beat frequency noise of a hybrid vehicle, the method comprising:

[0005] Get the engine main excitation frequency and the maximum fan speed;

[0006] The engine speed and / or fan speed are controlled according to the above-mentioned engine main excitation frequency, the above-mentioned fan maximum speed and the preset frequency difference, so that the frequency difference between the above-mentioned main excitation frequency and the fan rotation frequency is greater than the above-mentioned preset frequency difference.

[0007] Optionally, the frequency range of the above-mentioned preset frequency difference is determined according to a frequency avoidance debugging test.

[0008] Optionally, the controlling of the engine speed and / or the fan speed according to the main excitation frequency of the engine, the maximum speed of the fan and the preset frequency difference includes:

[0009] Obtaining a first reference speed and a second reference speed according to the main excitation frequency and the preset frequency difference;

[0010] The engine speed and / or the fan speed are controlled according to the relationship among the first reference speed, the second reference speed and the maximum speed of the fan.

[0011] Optionally, controlling the engine speed and / or the fan speed according to the relationship among the first reference speed, the second reference speed and the maximum speed of the fan includes:

[0012] When the maximum speed of the fan is greater than the first reference speed, the fan speed is controlled to run at the first reference speed.

[0013] Optionally, controlling the engine speed and / or the fan speed according to the relationship among the first reference speed, the second reference speed and the maximum speed of the fan includes:

[0014] When the maximum speed of the fan is less than the second reference speed, the engine speed and the fan speed are kept running at the current speeds.

[0015] Optionally, controlling the engine speed and / or the fan speed according to the relationship among the first reference speed, the second reference speed and the maximum speed of the fan includes:

[0016] When the maximum fan speed is greater than or equal to the second reference speed and less than or equal to the first reference speed, the engine speed is controlled to run at a parking charging speed greater than a third reference speed, wherein the third reference speed is calculated by the maximum fan speed frequency and a preset frequency difference.

[0017] Optionally, it is characterized in that the obtaining of the first reference speed and the second reference speed according to the main excitation frequency and the preset frequency difference comprises:

[0018] Obtaining the first reference speed according to the sum of the main excitation frequency and the preset frequency difference;

[0019] The second reference rotation speed is obtained according to the difference between the main excitation frequency and the preset frequency difference.

[0020] In a second aspect, the present application also proposes a hybrid electric vehicle beat frequency noise control device, comprising:

[0021] An acquisition unit, used for acquiring the main excitation frequency of the engine and the maximum speed of the fan;

[0022] A control unit is used to control the engine speed and / or fan speed according to the above-mentioned engine main excitation frequency, the above-mentioned fan maximum speed and a preset frequency difference, so that the frequency difference between the above-mentioned main excitation frequency and the fan rotation frequency is greater than the above-mentioned preset frequency difference.

[0023] In a third aspect, an electronic device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor is configured to implement the steps of the method for avoiding beat frequency noise in a hybrid vehicle as described in any one of the first aspects above when executing the computer program stored in the memory.

[0024] In a fourth aspect, the present application further proposes a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the method for avoiding beat frequency noise control for a hybrid vehicle according to any one of the above items in the first aspect is implemented.

[0025] In summary, the method for controlling the beat frequency noise of a hybrid vehicle in the embodiment of the present application includes: obtaining the main excitation frequency of the engine and the maximum speed of the fan; controlling the engine speed and / or the fan speed according to the main excitation frequency of the engine, the maximum speed of the fan and the preset frequency difference, so that the frequency difference between the main excitation frequency and the fan rotation frequency is greater than the preset frequency difference. The method for controlling the beat frequency noise of a hybrid vehicle proposed in the embodiment of the present application obtains the main excitation frequency of the engine, the maximum speed of the fan, and obtains the relationship between the engine rotation frequency and the fan rotation frequency corresponding to the current engine speed according to the preset frequency difference, and adjusts the engine speed or the fan speed so that the frequency difference between the main excitation frequency and the fan rotation frequency is greater than the preset frequency difference, effectively avoiding the occurrence of the beat frequency problem, and adjusting the fan speed and the engine speed in real time according to the selected charging operating point, while ensuring the charging and fan heat dissipation requirements.

[0026] The method for avoiding beat frequency noise control of a hybrid vehicle proposed in the present application, and other advantages, objectives and features of the present application will be partially reflected through the following description, and will also be partially understood by technicians in this field through research and practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present specification. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0028] Figure 1 A schematic flow chart of a method for controlling beat frequency noise in a hybrid vehicle provided in an embodiment of the present application;

[0029] Figure 2 A time domain schematic diagram of vibration of a hybrid vehicle provided in an embodiment of the present application;

[0030] Figure 3 A schematic diagram of a vibration frequency domain of a hybrid vehicle provided in an embodiment of the present application;

[0031] Figure 4 A schematic flow chart of another method for controlling beat frequency noise in a hybrid vehicle provided in an embodiment of the present application;

[0032] Figure 5 A schematic diagram of the structure of a hybrid vehicle beat frequency noise control device provided in an embodiment of the present application;

[0033] Figure 6 A schematic diagram of the structure of an electronic device for avoiding beat frequency noise control in a hybrid vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] The method for controlling beat frequency noise of a hybrid vehicle proposed in the embodiment of the present application obtains the main excitation frequency of the engine, the maximum speed of the above-mentioned fan, and obtains the relationship between the engine speed and the fan speed corresponding to the current engine speed according to a preset frequency difference, and adjusts the engine speed or the fan speed so that the frequency difference between the main excitation frequency and the fan speed is greater than the above-mentioned preset frequency difference, thereby effectively avoiding the occurrence of beat frequency problems, and adjusting the fan speed and the engine speed in real time according to the selected charging operating point, while ensuring the charging and fan heat dissipation requirements.

[0035] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices. The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0036] See also Figure 1 , is a flow chart of a method for controlling beat frequency noise of a hybrid vehicle provided in an embodiment of the present application, which may specifically include:

[0037] S110, obtaining the main excitation frequency of the engine and the maximum speed of the fan;

[0038] For example, the engine speed of a hybrid vehicle with different power generation is different, and the speed is adjusted within a certain range according to the power generation demand; the fan speed changes linearly within a certain range due to heat dissipation and other requirements. In the idling charging condition, when the main excitation frequencies of the engine and fan speeds are similar, beat frequency phenomenon is easy to occur. To avoid the occurrence of beat frequency phenomenon, during the charging process of the hybrid vehicle, the engine speed Ne is obtained through the vehicle speed sensor. According to the formula: Fe = Ne / 60×m, this application takes a 4-cylinder engine as an example, the main excitation is 2nd order, and m is 2. Engines with other cylinder numbers can change m according to the order of their corresponding main excitation. The maximum fan speed can be obtained based on the performance parameters of the fan, which is a determined quantity.

[0039] S120. Control the engine speed and / or fan speed according to the main excitation frequency of the engine, the maximum speed of the fan and a preset frequency difference, so that the frequency difference between the main excitation frequency and the fan rotation frequency is greater than the preset frequency difference.

[0040] Exemplarily, the relationship between the engine speed and the fan speed corresponding to the current speed is analyzed based on the engine main excitation frequency, the maximum fan speed and the preset frequency difference, and the engine speed and the fan speed are controlled accordingly, with the aim of making the frequency difference between the main excitation frequency and the fan speed greater than the preset frequency difference △F, thereby avoiding the beat frequency phenomenon.

[0041] It should be noted that the engine speed of a hybrid vehicle is not controlled arbitrarily during parking charging. During the vehicle development stage, the engine charging speed range is selected based on NVH performance such as interior noise, steering wheel and floor vibration, combined with performance factors such as emissions and fuel consumption. Generally, parking charging speeds of different speeds are determined to meet the needs of different charging conditions.

[0042] In summary, the method for controlling beat frequency noise for hybrid vehicles proposed in the embodiment of the present application obtains the main excitation frequency of the engine, the maximum speed of the above-mentioned fan, and obtains the relationship between the engine speed and the fan speed corresponding to the current engine speed according to the preset frequency difference, and adjusts the engine speed or the fan speed so that the frequency difference between the main excitation frequency and the fan speed is greater than the above-mentioned preset frequency difference, thereby effectively avoiding the occurrence of beat frequency problems, and adjusting the fan speed and the engine speed in real time according to the selected charging operating point, while ensuring the charging and fan heat dissipation requirements.

[0043] In some examples, the frequency range of the preset frequency difference is determined according to a frequency avoidance debugging test.

[0044] For example, setting the frequency difference range to 3 Hz to 5 Hz can effectively avoid the occurrence of beat frequency noise. In the vehicle design stage, the beat frequency phenomenon can be monitored by arranging the in-vehicle noise, steering wheel vibration and fan vibration. Figure 2 To generate the time domain data of the beat frequency noise, Figure 3 To generate the spectrum data of the beat frequency noise, the fan speed is gradually adjusted until the beat frequency is eliminated while keeping the engine speed constant, thereby determining the preset frequency difference. Generally, the preset frequency difference ΔF can avoid the beat frequency noise in the range of 3-5Hz.

[0045] In some examples, controlling the engine speed and / or the fan speed according to the engine main excitation frequency, the fan maximum speed and the preset frequency difference includes:

[0046] Obtaining a first reference speed and a second reference speed according to the main excitation frequency and the preset frequency difference;

[0047] The engine speed and / or the fan speed are controlled according to the relationship among the first reference speed, the second reference speed and the maximum speed of the fan.

[0048] Exemplarily, a first reference speed and a second reference speed are determined based on a main excitation frequency and a preset frequency difference, and based on a relationship among the first reference speed, the second reference speed and the maximum speed of the fan, the operating conditions of the engine speed and the fan speed are determined, and the engine speed and / or the above-mentioned fan speed are controlled thereby, so that the frequency difference between the main excitation frequency and the fan rotation frequency is greater than a preset frequency difference △F, thereby avoiding a beat frequency phenomenon.

[0049] In some examples, it is characterized in that the obtaining of the first reference speed and the second reference speed according to the main excitation frequency and the preset frequency difference includes:

[0050] Obtaining the first reference speed according to the sum of the main excitation frequency and the preset frequency difference;

[0051] The second reference rotation speed is obtained according to the difference between the main excitation frequency and the preset frequency difference.

[0052] Exemplarily, the first reference speed is obtained according to the sum of the main excitation frequency and the preset frequency difference, and the first reference speed can be: 60 (Ne / 60×2+ΔF), and the second reference speed is obtained according to the difference between the main excitation frequency and the preset frequency difference, and the second reference speed can be, 60 (Ne / 60×2-ΔF).

[0053] The following three conditions may exist when adjusting the engine speed and / or fan speed:

[0054] Working condition A, controlling the engine speed and / or the fan speed according to the relationship among the first reference speed, the second reference speed and the maximum speed of the fan, includes:

[0055] When the maximum speed of the fan is greater than the first reference speed, the fan speed is controlled to run at the first reference speed.

[0056] Exemplarily, the maximum fan speed Nfmax is greater than the first reference speed 60 (Ne / 60×2+ΔF). At this time, the fan speed is controlled to operate at the first reference speed 60 (Ne / 60×2+ΔF). Such control can make the frequency difference between the main excitation frequency and the fan rotation frequency greater than the preset frequency difference △F, thereby avoiding the beat frequency phenomenon.

[0057] Working condition B, controlling the engine speed and / or the fan speed according to the relationship among the first reference speed, the second reference speed and the maximum speed of the fan, includes:

[0058] When the maximum speed of the fan is less than the second reference speed, the engine speed and the fan speed are kept running at the current speeds.

[0059] Exemplarily, the maximum fan speed Nfmax is less than the second reference speed 60 (Ne / 60×2-ΔF). At the current speed, the frequency difference between the main excitation frequency and the fan frequency is greater than the preset frequency difference ΔF, and beat frequency phenomenon will not occur. At this time, there is no need to adjust the engine speed and the fan speed.

[0060] Working condition C, controlling the engine speed and / or the fan speed according to the relationship among the first reference speed, the second reference speed and the maximum fan speed, includes:

[0061] When the maximum fan speed is greater than or equal to the second reference speed and less than or equal to the first reference speed, the engine speed is controlled to run at a parking charging speed greater than a third reference speed, wherein the third reference speed is calculated by the maximum fan speed frequency and a preset frequency difference.

[0062] Exemplarily, 60(Ne / 60×2-ΔF)≤Nfmax≤60(Ne / 60×2+ΔF). When the fan reaches the maximum speed due to the heat dissipation demand, the engine charging speed must be increased. The third reference speed can be determined by the formula 60 / m(Nfmax / 60+ΔF). For a four-cylinder vehicle, m=2. The engine speed is controlled to run at a parking charging speed greater than the third reference speed. During the vehicle development stage, the parking charging speed is selected based on the NVH performance such as the noise inside the vehicle, the steering wheel and the floor vibration, combined with the performance effects such as emissions and fuel consumption. In general, different parking charging speeds are determined to meet the needs of different charging conditions. At this time, a parking charging speed greater than the third reference speed should be selected.

[0063] In some examples, the following may be used: Figure 4 The method shown is to control the engine speed and fan speed to avoid beat frequency noise:

[0064] S210: Select Ne as the engine charging speed.

[0065] The engine charging speed range is selected based on the NVH performance such as the noise inside the car, the steering wheel and the floor vibration, combined with the performance impact such as emissions and fuel consumption. This step is the working condition selection during the development process. Generally, the parking power generation condition will have multiple speed points depending on the power.

[0066] S220: Calculation of excitation frequency.

[0067] Engine main excitation frequency: Fe = Ne / 60 × 2 (taking a 4-cylinder engine as an example, the main excitation is 2nd order; fan rotation frequency Ff = Nf / 60, avoidance frequency ΔF = |Ff-Fe|;

[0068] Among them, Ne is the engine speed, Nf is the fan speed; Fe is the engine main excitation frequency, and Ff is the fan speed frequency.

[0069] S230: Debugging the frequency avoidance range ΔF.

[0070] When the engine speed range is determined, the fan speed is gradually adjusted to avoid a certain frequency ΔF to eliminate the beat frequency phenomenon, depending on whether beat frequency noise and beat vibration problems occur. Generally, ΔF is set at 3 to 5 Hz.

[0071] S240: frequency avoidance strategy module.

[0072] For each engine speed operating point Ne, the fan speed is avoided between 60 (Ne / 60×2-ΔF) and 60 (Ne / 60×2+ΔF); at the same time, when selecting the engine charging condition, the maximum fan speed should be avoided as much as possible to appear at 60 (Ne / 60×2-ΔF) and 60 (Ne / 60×2+ΔF).

[0073] S2401: When 60 (Ne / 60×2+ΔF) is less than the maximum fan speed (Nfmax), the fan speed is 60 (Ne / 60×2+ΔF).

[0074] S2402: When 60 (Ne / 60×2-ΔF) is greater than the maximum fan speed (Nfmax), there is no need to adjust the speed;

[0075] S2403: When 60(Ne / 60×2-ΔF)≤Nfmax≤60(Ne / 60×2+ΔF), when the fan reaches the maximum speed due to heat dissipation demand, the engine charging speed must be increased, and Ne selects a speed point greater than 30(Nfmax / 60+ΔF).

[0076] See also Figure 5 , an embodiment of a control device for avoiding beat frequency noise in a hybrid vehicle in an embodiment of the present application may include:

[0077] An acquisition unit 21 is used to acquire the main excitation frequency of the engine and the maximum speed of the fan;

[0078] The control unit 22 is used to control the engine speed and / or fan speed according to the above-mentioned engine main excitation frequency, the above-mentioned fan maximum speed and the preset frequency difference, so that the frequency difference between the above-mentioned main excitation frequency and the fan rotation frequency is greater than the above-mentioned preset frequency difference.

[0079] like Figure 6 As shown, an embodiment of the present application also provides an electronic device 300, including a memory 310, a processor 320, and a computer program 311 stored in the memory 310 and executable on the processor. When the processor 320 executes the computer program 311, the steps of any method of the above-mentioned commercial satellite operation and control platform operation safety management are implemented.

[0080] Since the electronic device introduced in this embodiment is a device used to implement a hybrid vehicle beat frequency noise avoidance control device in the embodiment of the present application, based on the method introduced in the embodiment of the present application, the technical personnel in this field can understand the specific implementation mode of the electronic device of the present embodiment and its various variations. Therefore, how the electronic device implements the method in the embodiment of the present application is not introduced in detail here. As long as the technical personnel in this field implement the device used by the method in the embodiment of the present application, it belongs to the scope of protection of this application.

[0081] In the specific implementation process, when the computer program 311 is executed by the processor, it can achieve Figure 1 Any implementation manner in the corresponding embodiments.

[0082] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0083] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0084] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0085] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0086] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0087] The embodiment of the present application further provides a computer program product, which includes computer software instructions. When the computer software instructions are executed on a processing device, the processing device executes the process of avoiding beat frequency noise control for a hybrid vehicle in a corresponding embodiment, including:

[0088] Get the engine main excitation frequency and the maximum fan speed;

[0089] The engine speed and / or fan speed are controlled according to the above-mentioned engine main excitation frequency, the above-mentioned fan maximum speed and the preset frequency difference, so that the frequency difference between the above-mentioned main excitation frequency and the fan rotation frequency is greater than the above-mentioned preset frequency difference.

[0090] In a feasible implementation manner, the frequency range of the above-mentioned preset frequency difference is determined according to frequency avoidance debugging.

[0091] In a feasible implementation manner, the controlling of the engine speed and / or the fan speed according to the main excitation frequency of the engine, the maximum speed of the fan and the preset frequency difference includes:

[0092] Obtaining a first reference speed and a second reference speed according to the main excitation frequency and the preset frequency difference;

[0093] The engine speed and / or the fan speed are controlled according to the relationship among the first reference speed, the second reference speed and the maximum speed of the fan.

[0094] In a feasible implementation manner, controlling the engine speed and / or the fan speed according to the relationship among the first reference speed, the second reference speed and the maximum speed of the fan includes:

[0095] When the maximum speed of the fan is greater than the first reference speed, the fan speed is controlled to run at the first reference speed.

[0096] In a feasible implementation manner, controlling the engine speed and / or the fan speed according to the relationship among the first reference speed, the second reference speed and the maximum speed of the fan includes:

[0097] When the maximum speed of the fan is less than the second reference speed, the engine speed and the fan speed are kept running at the current speeds.

[0098] In a feasible implementation manner, controlling the engine speed and / or the fan speed according to the relationship among the first reference speed, the second reference speed and the maximum speed of the fan includes:

[0099] When the maximum fan speed is greater than or equal to the second reference speed and less than or equal to the first reference speed, the engine speed is controlled to run at a parking charging speed greater than a third reference speed, wherein the third reference speed is calculated by the maximum fan speed frequency and a preset frequency difference.

[0100] In a feasible implementation manner, it is characterized in that the obtaining of the first reference speed and the second reference speed according to the main excitation frequency and the preset frequency difference comprises:

[0101] Obtaining the first reference speed according to the sum of the main excitation frequency and the preset frequency difference;

[0102] The second reference rotation speed is obtained according to the difference between the main excitation frequency and the preset frequency difference.

[0103] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server or a data center that includes one or more available media integration. The available medium can be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive (SSD)), etc.

[0104] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0105] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0106] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0107] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0108] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0109] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for controlling beat frequency noise of a hybrid vehicle, characterized in that: include: Get the engine main excitation frequency and the maximum fan speed; Controlling the engine speed and / or the fan speed according to the engine main excitation frequency, the fan maximum speed and a preset frequency difference, so that the frequency difference between the main excitation frequency and the fan rotation frequency is greater than the preset frequency difference; The controlling of the engine speed and / or the fan speed according to the main excitation frequency of the engine, the maximum speed of the fan and the preset frequency difference comprises: Acquire a first reference speed and a second reference speed according to the main excitation frequency and the preset frequency difference; Controlling the engine speed and / or the fan speed according to the relationship among the first reference speed, the second reference speed and the maximum speed of the fan; The controlling the engine speed and / or the fan speed according to the magnitude relationship among the first reference speed, the second reference speed and the maximum speed of the fan comprises: When the maximum speed of the fan is greater than the first reference speed, controlling the fan speed to run at the first reference speed; When the maximum speed of the fan is less than the second reference speed, maintaining the engine speed and the fan speed at the current speed; When the maximum fan speed is greater than or equal to the second reference speed and the maximum fan speed is less than or equal to the first reference speed, the engine speed is controlled to run at a parking charging speed greater than a third reference speed, wherein the third reference speed is calculated by the maximum fan speed frequency and a preset frequency difference.

2. The method according to claim 1, characterized in that The frequency range of the preset frequency difference is determined according to a frequency avoidance debugging test.

3. The method according to claim 1 or 2, characterized in that The obtaining of the first reference rotation speed and the second reference rotation speed according to the main excitation frequency and the preset frequency difference comprises: Acquire the first reference speed according to the sum of the main excitation frequency and the preset frequency difference; The second reference rotation speed is obtained according to the difference between the main excitation frequency and the preset frequency difference.

4. A hybrid vehicle beat frequency noise control device, characterized in that: include: An acquisition unit, used for acquiring the main excitation frequency of the engine and the maximum speed of the fan; a control unit, configured to control the engine speed and / or the fan speed according to the engine main excitation frequency, the fan maximum speed and a preset frequency difference, so that the frequency difference between the main excitation frequency and the fan rotation frequency is greater than the preset frequency difference; The controlling of the engine speed and / or the fan speed according to the main excitation frequency of the engine, the maximum speed of the fan and the preset frequency difference comprises: Acquire a first reference speed and a second reference speed according to the main excitation frequency and the preset frequency difference; Controlling the engine speed and / or the fan speed according to the relationship among the first reference speed, the second reference speed and the maximum speed of the fan; The controlling the engine speed and / or the fan speed according to the magnitude relationship among the first reference speed, the second reference speed and the maximum speed of the fan comprises: When the maximum speed of the fan is greater than the first reference speed, controlling the fan speed to run at the first reference speed; When the maximum speed of the fan is less than the second reference speed, maintaining the engine speed and the fan speed at the current speed; When the maximum fan speed is greater than or equal to the second reference speed and the maximum fan speed is less than or equal to the first reference speed, the engine speed is controlled to run at a parking charging speed greater than a third reference speed, wherein the third reference speed is calculated by the maximum fan speed frequency and a preset frequency difference.

5. An electronic device comprising: A memory and a processor, wherein the processor is used to implement the steps of the method for avoiding beat frequency noise of a hybrid vehicle as described in any one of claims 1 to 3 when executing the computer program stored in the memory.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for controlling a hybrid vehicle to avoid beat frequency noise according to any one of claims 1 to 3 is implemented.

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