Method and device for regulating speed of silicon oil fan, storage medium and vehicle

Abstract

The application discloses a silicon oil fan rotating speed regulation method and device, a storage medium and a vehicle. The method comprises the following steps: determining a first target rotating speed based on a sound wave demand rotating speed and a heat dissipation demand rotating speed under the condition that a sound wave function is activated; determining a second target rotating speed based on the first target rotating speed and a maximum silicon oil fan rotating speed of the silicon oil fan; determining a basic duty ratio based on the second target rotating speed; calculating a target duty ratio based on a deviation value between the second target rotating speed and an actual rotating speed of the silicon oil fan; determining a final duty ratio based on the basic duty ratio and the target duty ratio, and controlling the silicon oil fan to adjust the operating rotating speed of the silicon oil fan according to the final duty ratio, so that the operating rotating speed is equal to the second target rotating speed. The method can create a sound wave sound effect by using the silicon oil fan under the condition that the heat dissipation demand of the vehicle is met, improve the user experience, accurately and stably control the operating rotating speed of the silicon oil fan, and realize the heat dissipation demand of the whole vehicle and the sound wave demand expected by customers.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a speed regulation method and device of a silicone oil fan, a storage medium and a vehicle. BACKGROUND

[0002] As an indispensable part of off-road vehicles, the silicone oil fan can provide the off-road vehicle with strong heat dissipation capacity to ensure that the off-road vehicle can normally achieve excellent power performance. The existing off-road vehicles generally adjust the speed of the silicone oil fan according to the required speed of heat dissipation during operation. Obviously, the existing speed regulation method of the silicone oil fan only meets the heat dissipation requirement of the off-road vehicle. However, with the youth of the vehicle owners, the young vehicle owner group expects to experience different use experiences of the off-road vehicle, such as enjoying the sound generated when the sports car is running.

[0003] Therefore, how to create a sound effect using the silicone oil fan while meeting the heat dissipation requirement of the vehicle has become a problem to be solved in the field. SUMMARY

[0004] The present application provides a speed regulation method and device of a silicone oil fan, a storage medium and a vehicle, which are used to create a sound effect using the silicone oil fan while meeting the heat dissipation requirement of the vehicle.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] A speed regulation method of a silicone oil fan, comprising:

[0007] In a case where a sound function is activated, a first target speed of the silicone oil fan is determined based on a sound requirement speed and a heat dissipation requirement speed of the silicone oil fan;

[0008] A second target speed of the silicone oil fan is determined based on the first target speed and a maximum silicone oil fan speed of the silicone oil fan;

[0009] A basic duty ratio is determined based on the second target speed;

[0010] A target duty ratio is calculated based on a deviation value between the second target speed and an actual speed of the silicone oil fan;

[0011] A final duty ratio is determined based on the basic duty ratio and the target duty ratio, and the operation speed of the silicone oil fan is adjusted according to the final duty ratio so that the operation speed is equal to the second target speed.

[0012] Optionally, the case where the sound function is activated comprises:

[0013] activate a sound wave function of the vehicle in response to a sound wave activation request; the sound wave activation request is a request generated when the gear of the vehicle is in a neutral gear and a parking gear, the vehicle speed is equal to a preset value, and the throttle pedal opening degree of the vehicle is greater than a preset opening degree threshold in response to a trigger operation of the vehicle owner.

[0014] Optionally, the first target speed of the silicon oil fan is determined based on the sound wave demand speed of the silicon oil fan and the heat dissipation demand speed of the silicon oil fan, comprising:

[0015] The throttle pedal opening degree, the actual engine speed, and the heat dissipation demand speed of the vehicle are collected.

[0016] A first preset silicon oil fan speed table is obtained, and the sound wave demand speed of the silicon oil fan is determined according to the throttle pedal opening degree, the actual engine speed, and the first preset silicon oil fan speed table.

[0017] The maximum demand speed is selected from the sound wave demand speed and the heat dissipation demand speed as the first target speed of the silicon oil fan.

[0018] Optionally, the heat dissipation demand speed comprises a first heat dissipation demand speed, a second heat dissipation demand speed, and a third heat dissipation demand speed.

[0019] The maximum demand speed is selected from the sound wave demand speed and the heat dissipation demand speed as the first target speed of the silicon oil fan, comprising:

[0020] The maximum demand speed is selected from the sound wave demand speed, the first heat dissipation demand speed, the second heat dissipation demand speed, and the third heat dissipation demand speed as the first target speed of the silicon oil fan.

[0021] Optionally, the second target speed of the silicon oil fan is determined based on the first target speed and the maximum silicon oil fan speed of the silicon oil fan, comprising:

[0022] The actual engine speed of the vehicle and a second preset silicon oil fan speed table are obtained, and the maximum silicon oil fan speed is determined according to the actual engine speed and the second preset silicon oil fan speed table.

[0023] The minimum speed is selected from the maximum silicon oil fan speed and the first target speed as the second target speed of the silicon oil fan.

[0024] Optionally, the basic duty cycle is determined based on the second target speed, comprising:

[0025] acquire an engine actual rotating speed of the vehicle and a preset basic duty ratio table, and determine a basic duty ratio according to the engine actual rotating speed, the second target rotating speed and the preset basic duty ratio table.

[0026] Optionally, the target duty ratio is calculated based on a deviation value between the second target rotating speed and an actual rotating speed of the silicone oil fan.

[0027] The PID controller calculates a deviation value between the second target rotating speed and an actual rotating speed of the silicone oil fan, and substitutes the deviation value and a pre-calibrated PID parameter into a PID algorithm to obtain the target duty ratio.

[0028] A rotating speed regulation device of a silicone oil fan, comprising:

[0029] A first determining unit is configured to determine a first target rotating speed of the silicone oil fan based on a sound wave demand rotating speed and a heat dissipation demand rotating speed of the silicone oil fan when it is determined that the sound wave function is activated.

[0030] A second determining unit is configured to determine a second target rotating speed of the silicone oil fan based on the first target rotating speed and a maximum silicone oil fan rotating speed of the silicone oil fan.

[0031] A third determining unit is configured to determine a basic duty ratio based on the second target rotating speed.

[0032] A calculating unit is configured to calculate a target duty ratio based on a deviation value between the second target rotating speed and an actual rotating speed of the silicone oil fan.

[0033] A control unit is configured to determine a final duty ratio based on the basic duty ratio and the target duty ratio, and control the silicone oil fan to adjust a running rotating speed of the silicone oil fan according to the final duty ratio, so that the running rotating speed is equal to the second target rotating speed.

[0034] A computer readable storage medium comprising a stored program, wherein the program executes the rotating speed regulation method of the silicone oil fan.

[0035] A vehicle comprising a processor, a memory and a bus, wherein the processor is connected with the memory through the bus.

[0036] The memory is configured to store a program, and the processor is configured to run the program, wherein the program executes the rotating speed regulation method of the silicone oil fan when running.

[0037] The technical solution provided by the present application determines the first target speed of the silicone oil fan based on the sound wave requirement speed and the heat dissipation requirement speed of the silicone oil fan when determining that the sound wave function is activated. The second target speed of the silicone oil fan is determined based on the first target speed and the maximum silicone oil fan speed of the silicone oil fan. Based on the second target speed, the basic duty cycle is determined. Based on the deviation value between the second target speed and the actual speed of the silicone oil fan, the target duty cycle is calculated. Based on the basic duty cycle and the target duty cycle, the final duty cycle is determined, and the silicone oil fan is controlled to adjust the operating speed of the silicone oil fan according to the final duty cycle so that the operating speed is equal to the second target speed. Using the solution shown in the application, the silicone oil fan can be used to create sound effects while meeting the heat dissipation needs of the vehicle, thereby effectively improving the user experience of the vehicle, accurately and smoothly controlling the operating speed of the silicone oil fan, and achieving the heat dissipation needs of the entire vehicle and the sound wave needs expected by customers. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0039] Figure 1 A flow chart of a method for controlling the speed of a silicone oil fan provided in an embodiment of the present application;

[0040] Figure 2 A flow chart of another method for controlling the speed of a silicone oil fan provided in an embodiment of the present application;

[0041] Figure 3 A schematic diagram of the architecture of a speed control device for a silicone oil fan provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0043] like Figure 1 FIG. 1 is a flow chart of a method for controlling the speed of a silicone oil fan provided in an embodiment of the present application, which can be applied to an engine electronic control module (ECM) of a vehicle, and includes the following steps:

[0044] S101: activating the sound wave function of the vehicle in response to a sound wave activation request.

[0045] The sound wave activation request is a request generated when the accelerator pedal of the vehicle is greater than a preset opening threshold in response to a triggering operation of the vehicle owner when the gear of the vehicle is in the neutral gear and the parking gear, and the vehicle speed is equal to a preset value. In the embodiment of the present application, the preset value can be zero, and the sound wave function is used to control the silicone oil fan to create a sound wave sound effect.

[0046] Optionally, after determining that the sound wave function of the vehicle is activated, the vehicle owner can be prompted by voice that the sound wave function has been activated, or the vehicle owner can be prompted by a preset interface that the sound wave function has been activated.

[0047] S102: collecting the accelerator pedal opening of the vehicle, the actual engine speed, the actual speed of the silicone oil fan, the first heat dissipation demand speed, the second heat dissipation demand speed, and the third heat dissipation demand speed.

[0048] The accelerator pedal opening of the vehicle and the actual engine speed are both collected by the sensor pre-installed in the vehicle in real time, and can be directly obtained from the electronic control unit (ECU) of the vehicle. In the embodiment of the present application, the actual speed of the silicone oil fan is transmitted to the ECU, and therefore the actual speed of the silicone oil fan can be directly read from the ECU.

[0049] In addition, the first heat dissipation demand speed, the second heat dissipation demand speed, and the third heat dissipation demand speed can all be directly obtained from the ECU. Specifically, the first heat dissipation demand speed represents the heat dissipation demand speed of the vehicle air conditioner for the silicone oil fan, the second heat dissipation demand speed represents the heat dissipation demand speed of the vehicle transmission for the silicone oil fan, and the third heat dissipation demand speed represents the heat dissipation demand speed of the vehicle power converter (DC-DC) for the silicone oil fan.

[0050] Generally, when the vehicle air conditioner is running, it will send a signal to the ECU to inform the ECU of the first heat dissipation demand speed. Similarly, when the vehicle transmission is working, it will also send a signal to the ECU to inform the ECU of the second heat dissipation demand speed. When the vehicle power converter is working, it will also send a signal to the ECU to inform the ECU of the third heat dissipation demand speed.

[0051] S103: determining the sound wave demand speed of the silicone oil fan according to the accelerator pedal opening, the actual engine speed, and the first preset silicone oil fan speed table.

[0052] The first preset silicone oil fan rotating speed table is used for recording the corresponding relationship among the accelerator pedal opening degree, the engine actual rotating speed and the sound wave demand rotating speed.

[0053] Table 1

[0054]

[0055] It should be noted that the content shown in the above table 1 is only used for example, in the actual application process, the values of X, Y, Z1, Z2, Z3, Z4, Z5, Z6, Z7, Z8, Z9, Z10 can be set according to the actual situation. In addition, the sound wave demand rotating speed shown in the first preset silicone oil fan rotating speed table is the rotating speed that must be possessed when the silicone oil fan creates a sound wave effect.

[0056] S104: selecting the maximum demand rotating speed from the sound wave demand rotating speed, the first heat dissipation demand rotating speed, the second heat dissipation demand rotating speed and the third heat dissipation demand rotating speed as the first target rotating speed of the silicone oil fan.

[0057] Among them, the maximum demand rotating speed is selected from the sound wave demand rotating speed, the first heat dissipation demand rotating speed, the second heat dissipation demand rotating speed and the third heat dissipation demand rotating speed as the first target rotating speed of the silicone oil fan, which can meet the maximum heat dissipation demand of the vehicle.

[0058] S105: determining the maximum silicone oil fan rotating speed according to the engine actual rotating speed and the second preset silicone oil fan rotating speed table.

[0059] The second preset silicone oil fan rotating speed table is used for recording the corresponding relationship between the engine actual rotating speed and the maximum silicone oil fan rotating speed table. The so-called maximum silicone oil fan rotating speed refers to the maximum value of the rotating speed of the silicone oil fan under the actual rotating speed of the engine of the vehicle. Specifically, the second preset silicone oil fan rotating speed table can be seen from table 2.

[0060] Table 2

[0061] Engine actual speed (rpm) Maximum silicone oil fan speed (rpm) 800 1200 1000 1500 1250 1800 R W

[0062] It should be noted that the content shown in the above table 2 is only used for example, in the actual application process, the values of R and W can be set according to the actual situation.

[0063] S106: selecting the minimum rotating speed from the maximum silicone oil fan rotating speed and the first target rotating speed as the second target rotating speed of the silicone oil fan.

[0064] Among them, the minimum speed value is selected from the maximum silicone oil fan rotating speed and the first target rotating speed as the second target rotating speed of the silicone oil fan, to avoid the second target rotating speed exceeding the functional limit of the silicone oil fan, and to ensure that the silicone oil fan can work normally.

[0065] S107: Determine the basic duty ratio according to the engine actual rotating speed, the second target rotating speed and the preset basic duty ratio table.

[0066] Among them, the preset basic duty ratio table is used to record the corresponding relationship between the second target rotating speed, the engine actual rotating speed and the basic duty ratio. Specifically, the preset basic duty ratio table can refer to Table 3.

[0067] Table 3

[0068]

[0069] It should be noted that the content shown in Table 3 above is only used for example, and in actual application, the values of x, y, z1, z2, z3, z4, z5, z6, z7, z8, z9, z10, z11, z12, z13, z14, z15, z16, z17, z18, z19, z20, z21, z22, z23, z24 can be set according to actual conditions.

[0070] Generally, the silicone oil fan adjusts its rotating speed based on the duty ratio based on its own structural characteristics. The so-called duty ratio: in a cycle of a pulse signal (a signal sent by the control chip of the silicone oil fan), the ratio of the time when the pulse signal is high to the whole cycle, which can be simply understood as the signal that can be recognized by the silicone oil fan.

[0071] Specifically, the electric control silicone oil fan uses silicone oil as medium, utilizes the high viscosity characteristics of silicone oil to transmit torque, and cools the engine and air conditioner condenser by driving the fan to rotate by the engine crankshaft. The control principle of the electric control silicone oil fan is to adjust the opening degree of the oil inlet hole on the driven plate of the silicone oil fan clutch according to different set rotating speeds. The larger the opening degree of the oil inlet hole, the more silicone oil enters the clutch working chamber, and the higher the fan rotating speed, until the same as the input shaft rotating speed of the fan clutch, which is called complete combination. The smaller the opening degree of the oil inlet hole, the lower the fan rotating speed, until the oil inlet hole is completely closed and the clutch is completely separated, and the fan rotating speed becomes very low, which is called complete separation.

[0072] In the prior art, the whole vehicle controller calculates the set fan rotating speed according to the collected engine water temperature, engine intake temperature, air conditioner working state and other information, and then uses the PID control algorithm to obtain the PWM output signal (i.e. the period is fixed and the duty cycle is changed) to control the opening degree change of the oil inlet hole, so as to realize the control of the rotating speed of the electrically controlled silicon oil fan.

[0073] S108: The PID controller calculates the deviation value between the second target rotating speed and the actual rotating speed of the silicon oil fan, and substitutes the deviation value and the pre-labeled PID parameters into the PID algorithm to obtain the target duty cycle.

[0074] S109: The sum of the basic duty cycle and the target duty cycle is calculated to obtain the final duty cycle.

[0075] S110: The silicon oil fan is controlled to adjust the running rotating speed of the silicon oil fan according to the final duty cycle, so that the running rotating speed of the silicon oil fan is equal to the fan target rotating speed.

[0076] Optionally, in order to further improve the user experience (e.g. the owner of the vehicle), the user can control the volume of the sound wave through the preset sound wave effect adjustment switch. After receiving the volume value input by the user, a third preset silicon oil fan rotating speed table is obtained, and the rotating speed adjustment value of the silicon oil fan is determined according to the volume value and the third preset silicon oil fan rotating speed table. The second target rotating speed is adjusted according to the rotating speed adjustment value to obtain a new second target rotating speed. The processes shown in S108-S110 are executed according to the new second target rotating speed, so that the volume of the sound wave created by the silicon oil fan meets the user's demand.

[0077] As described above, by using the scheme shown in the embodiment, the sound wave sound effect can be created by the silicon oil fan while meeting the vehicle heat dissipation demand, thereby effectively improving the user experience of the vehicle, accurately and smoothly controlling the running rotating speed of the silicon oil fan, and realizing the heat dissipation demand of the whole vehicle and the sound wave demand expected by the customer.

[0078] It should be noted that S101 mentioned in the above embodiment is an optional implementation of the silicon oil fan rotating speed regulation method shown in the present application. In addition, S107 mentioned in the above embodiment is also an optional implementation of the silicon oil fan rotating speed regulation method shown in the present application. Therefore, the process mentioned in the above embodiment can be summarized as Figure 2 the method shown in the above embodiment.

[0079] As Figure 2 shown, another process flow diagram of the silicon oil fan rotating speed regulation method provided by the embodiment of the present application is shown, which includes the following steps:

[0080] S201: When it is determined that the sound wave function is activated, determining a first target speed of the silicone oil fan based on a required sound wave speed and a required heat dissipation speed of the silicone oil fan.

[0081] S202: Determine a second target rotation speed of the silicone oil fan based on the first target rotation speed and the maximum silicone oil fan rotation speed of the silicone oil fan.

[0082] S203: Determine a basic duty cycle based on the second target speed.

[0083] S204: Calculate a target duty cycle based on a deviation between the second target rotational speed and the actual rotational speed of the silicone oil fan.

[0084] S205: Determine a final duty cycle based on the basic duty cycle and the target duty cycle, and control the silicone oil fan to adjust the operating speed of the silicone oil fan according to the final duty cycle so that the operating speed is equal to the second target speed.

[0085] To sum up, by using the solution shown in this embodiment, a silicone oil fan can be used to create sound effects while meeting the vehicle's heat dissipation needs, thereby effectively improving the vehicle's user experience, accurately and smoothly controlling the operating speed of the silicone oil fan, and achieving the heat dissipation needs of the entire vehicle and the sound effects expected by customers.

[0086] Corresponding to the speed control method of the silicone oil fan provided in the above-mentioned embodiment of the present application, the embodiment of the present application also provides a speed control device for a silicone oil fan.

[0087] like Figure 3 FIG. 1 is a schematic diagram of the structure of a speed control device for a silicone oil fan provided in an embodiment of the present application, comprising:

[0088] The first determining unit 100 is configured to determine a first target speed of the silicone oil fan based on a required speed of sound and a required speed of heat dissipation of the silicone oil fan when it is determined that the sound function is activated.

[0089] Optionally, the first determination unit 100 is specifically used to: respond to a sound activation request to activate the sound function of the vehicle; the sound activation request is: when the vehicle's gear position is neutral and park, and the vehicle speed is equal to a preset value, the accelerator pedal responds to the owner's trigger operation, causing the vehicle's accelerator pedal opening to be greater than a preset opening threshold. The request is generated.

[0090] The first determining unit 100 is specifically configured to: collect an accelerator pedal opening degree, an engine actual speed and a heat dissipation demand speed of the vehicle; obtain a first preset silicone oil fan speed table, and determine a sound wave demand speed of the silicone oil fan according to the accelerator pedal opening degree, the engine actual speed and the first preset silicone oil fan speed table; and select a maximum demand speed from the sound wave demand speed and the heat dissipation demand speed as a first target speed of the silicone oil fan.

[0091] Optionally, the heat dissipation demand speed includes a first heat dissipation demand speed, a second heat dissipation demand speed and a third heat dissipation demand speed.

[0092] The first determining unit 100 is specifically configured to: select a maximum demand speed from the sound wave demand speed, the first heat dissipation demand speed, the second heat dissipation demand speed and the third heat dissipation demand speed as the first target speed of the silicone oil fan.

[0093] The second determining unit 200 is configured to determine a second target speed of the silicone oil fan based on the first target speed and a maximum silicone oil fan speed of the silicone oil fan.

[0094] Optionally, the second determining unit 200 is specifically configured to: obtain the engine actual speed and a second preset silicone oil fan speed table of the vehicle, and determine the maximum silicone oil fan speed according to the engine actual speed and the second preset silicone oil fan speed table; and select a minimum speed from the maximum silicone oil fan speed and the first target speed as the second target speed of the silicone oil fan.

[0095] The third determining unit 300 is configured to determine a basic duty ratio based on the second target speed.

[0096] Optionally, the third determining unit 300 is specifically configured to: obtain the engine actual speed and a preset basic duty ratio table of the vehicle, and determine the basic duty ratio according to the engine actual speed, the second target speed and the preset basic duty ratio table.

[0097] The calculating unit 400 is configured to calculate a target duty ratio based on a deviation value between the second target speed and an actual speed of the silicone oil fan.

[0098] Optionally, the calculating unit 400 is specifically configured to: a PID controller calculates the deviation value between the second target speed and the actual speed of the silicone oil fan, and substitutes the deviation value and a pre-calibrated PID parameter into a PID algorithm to obtain the target duty ratio.

[0099] The control unit 500 is configured to determine a final duty ratio based on the basic duty ratio and the target duty ratio, and control the silicone oil fan to adjust the running speed of the silicone oil fan according to the final duty ratio, so that the running speed is equal to the second target speed.

[0100] In summary, by using the scheme shown in the embodiment, the sound wave sound effect can be created by the silicon oil fan while meeting the vehicle heat dissipation demand, thereby effectively improving the user experience of the vehicle, accurately and smoothly controlling the running speed of the silicon oil fan, and realizing the heat dissipation demand of the whole vehicle and the sound wave demand expected by the customer.

[0101] The application also provides a computer-readable storage medium, which comprises a stored program, wherein the program executes the speed regulation method of the silicon oil fan provided by the application.

[0102] The application also provides a vehicle, which comprises a processor, a memory and a bus. The processor is connected with the memory through the bus. The memory is used for storing a program, and the processor is used for running the program. When the program is run, the speed regulation method of the silicon oil fan provided by the application is executed, which comprises the following steps:

[0103] In the case of determining the activation of the sound wave function, a first target speed of the silicon oil fan is determined based on the sound wave demand speed and the heat dissipation demand speed of the silicon oil fan.

[0104] A second target speed of the silicon oil fan is determined based on the first target speed and the maximum silicon oil fan speed of the silicon oil fan.

[0105] A basic duty ratio is determined based on the second target speed.

[0106] A target duty ratio is calculated based on the deviation value between the second target speed and the actual speed of the silicon oil fan.

[0107] A final duty ratio is determined based on the basic duty ratio and the target duty ratio, and the running speed of the silicon oil fan is adjusted according to the final duty ratio to make the running speed equal to the second target speed.

[0108] Specifically, in the above embodiment, the determination of the activation of the sound wave function comprises:

[0109] The sound wave function of the vehicle is activated in response to a sound wave activation request. The sound wave activation request is generated when the gear of the vehicle is neutral or parking, the vehicle speed is equal to a preset value, the accelerator pedal is triggered by the operation of the owner, and the opening degree of the accelerator pedal of the vehicle is greater than a preset opening threshold.

[0110] Specifically, in the above embodiment, the determination of the first target speed of the silicon oil fan based on the sound wave demand speed and the heat dissipation demand speed of the silicon oil fan comprises:

[0111] The opening degree of the accelerator pedal, the actual speed of the engine and the heat dissipation demand speed of the vehicle are collected.

[0112] acquire a first preset silicon oil fan rotating speed table, and determine the sound wave demand rotating speed of the silicon oil fan according to the accelerator pedal opening, the actual engine rotating speed and the first preset silicon oil fan rotating speed table;

[0113] select the demand rotating speed with the maximum value from the sound wave demand rotating speed and the heat dissipation demand rotating speed as the first target rotating speed of the silicon oil fan.

[0114] Specifically, on the basis of the above embodiment, the heat dissipation demand rotating speed includes a first heat dissipation demand rotating speed, a second heat dissipation demand rotating speed and a third heat dissipation demand rotating speed;

[0115] The step of selecting the demand rotating speed with the maximum value from the sound wave demand rotating speed and the heat dissipation demand rotating speed as the first target rotating speed of the silicon oil fan includes:

[0116] selecting the demand rotating speed with the maximum value from the sound wave demand rotating speed, the first heat dissipation demand rotating speed, the second heat dissipation demand rotating speed and the third heat dissipation demand rotating speed as the first target rotating speed of the silicon oil fan.

[0117] Specifically, on the basis of the above embodiment, the step of determining the second target rotating speed of the silicon oil fan based on the first target rotating speed and the maximum silicon oil fan rotating speed of the silicon oil fan includes:

[0118] acquiring the actual engine rotating speed of the vehicle and a second preset silicon oil fan rotating speed table, and determining the maximum silicon oil fan rotating speed according to the actual engine rotating speed and the second preset silicon oil fan rotating speed table;

[0119] selecting the rotating speed with the minimum value from the maximum silicon oil fan rotating speed and the first target rotating speed as the second target rotating speed of the silicon oil fan.

[0120] Specifically, on the basis of the above embodiment, the step of determining the basic duty ratio based on the second target rotating speed includes:

[0121] acquiring the actual engine rotating speed of the vehicle and a preset basic duty ratio table, and determining the basic duty ratio according to the actual engine rotating speed, the second target rotating speed and the preset basic duty ratio table.

[0122] Specifically, on the basis of the above embodiment, the step of calculating the target duty ratio based on the deviation value between the second target rotating speed and the actual rotating speed of the silicon oil fan includes:

[0123] The PID controller calculates a deviation value between the second target rotating speed and an actual rotating speed of the silicone oil fan, and substitutes the deviation value and pre-calibrated PID parameters into a PID algorithm to obtain a target duty cycle.

[0124] If the functions of the method of the embodiments of the present application are realized in the form of software function units and sold or used as independent products, the functions can be stored in a readable storage medium of a computing device. Based on this understanding, the part of the prior art or the part of the technical solution of the embodiments of the present application that makes contributions to the prior art can be embodied in the form of a software product, which is stored in a storage medium and includes a plurality of instructions for causing a computing device (which can be a personal computer, a server, a mobile computing device or a network device, etc.) to execute all or part of the steps of the method described in the embodiments of the present application. The aforementioned storage medium includes a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk and various program code storage media.

[0125] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other.

[0126] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method of regulating the rotational speed of a silicone oil fan, characterized by, The method comprises the following steps: In the case of determining the sound wave function activation, based on the sound wave demand speed of the silicone oil fan and the heat dissipation demand speed, a first target speed of the silicone oil fan is determined; wherein the determination process of the first target speed comprises: collecting the opening degree of the accelerator pedal of the vehicle, the actual engine speed, and the heat dissipation demand speed; obtaining a first preset silicone oil fan speed table, and determining the sound wave demand speed of the silicone oil fan according to the opening degree of the accelerator pedal, the actual engine speed and the first preset silicone oil fan speed table; from the sound wave demand speed and the heat dissipation demand speed, the maximum demand speed is selected as the first target speed of the silicone oil fan; Based on the first target speed and the maximum silicone oil fan speed of the silicone oil fan, a second target speed of the silicone oil fan is determined; wherein the determination process of the second target speed comprises: obtaining the actual engine speed of the vehicle and a second preset silicone oil fan speed table, and determining the maximum silicone oil fan speed according to the actual engine speed and the second preset silicone oil fan speed table; from the maximum silicone oil fan speed and the first target speed, the minimum speed is selected as the second target speed of the silicone oil fan; Based on the second target speed, a basic duty ratio is determined; Based on the deviation value between the second target speed and the actual speed of the silicone oil fan, a target duty ratio is calculated; Based on the basic duty ratio and the target duty ratio, a final duty ratio is determined, and the running speed of the silicone oil fan is adjusted according to the final duty ratio to make the running speed equal to the second target speed.

2. The method of claim 1, wherein, The determination of the sound wave function activation includes: In response to the sound wave activation request, the sound wave function of the vehicle is activated; the sound wave activation request is: when the gear of the vehicle is neutral and parking, and the vehicle speed is equal to the preset value, the accelerator pedal generates a request when the opening degree of the accelerator pedal of the vehicle is greater than the preset opening threshold in response to the trigger operation of the owner.

3. The method of claim 1, wherein, The heat dissipation demand speed includes a first heat dissipation demand speed, a second heat dissipation demand speed and a third heat dissipation demand speed; From the sound wave demand speed and the heat dissipation demand speed, the maximum demand speed is selected as the first target speed of the silicone oil fan. From the sound wave demand speed, the first heat dissipation demand speed, the second heat dissipation demand speed and the third heat dissipation demand speed, the maximum demand speed is selected as the first target speed of the silicone oil fan.

4. The method of claim 1, wherein, The determination of the basic duty ratio based on the second target speed includes: The actual engine speed of the vehicle and a preset basic duty ratio table are obtained, and the basic duty ratio is determined according to the actual engine speed, the second target speed and the preset basic duty ratio table.

5. The method of claim 1, wherein, The calculation of the target duty ratio based on the deviation value between the second target speed and the actual speed of the silicone oil fan includes: The PID controller calculates a deviation value between the second target rotating speed and an actual rotating speed of the silicone oil fan, and inputs the deviation value and pre-calibrated PID parameters into a PID algorithm to obtain a target duty ratio.

6. A rotational speed regulating device for a silicone oil fan, characterized by comprising: The method comprises the following steps: The first determining unit is configured to determine a first target rotating speed of the silicone oil fan based on a sound wave demand rotating speed and a heat dissipation demand rotating speed of the silicone oil fan in a case where the sound wave function is activated, wherein the determination process of the first target rotating speed comprises the following steps: collecting an accelerator pedal opening degree, an actual engine rotating speed and a heat dissipation demand rotating speed of the vehicle; obtaining a first preset silicone oil fan rotating speed table, and determining the sound wave demand rotating speed of the silicone oil fan according to the accelerator pedal opening degree, the actual engine rotating speed and the first preset silicone oil fan rotating speed table; and selecting a demand rotating speed with the maximum value from the sound wave demand rotating speed and the heat dissipation demand rotating speed as the first target rotating speed of the silicone oil fan; The second determining unit is configured to determine a second target rotating speed of the silicone oil fan based on the first target rotating speed and a maximum silicone oil fan rotating speed of the silicone oil fan, wherein the determination process of the second target rotating speed comprises the following steps: obtaining the actual engine rotating speed of the vehicle and a second preset silicone oil fan rotating speed table, and determining the maximum silicone oil fan rotating speed according to the actual engine rotating speed and the second preset silicone oil fan rotating speed table; and selecting a rotating speed with the minimum value from the maximum silicone oil fan rotating speed and the first target rotating speed as the second target rotating speed of the silicone oil fan; The third determining unit is configured to determine a basic duty ratio based on the second target rotating speed; The calculating unit is configured to calculate a target duty ratio based on a deviation value between the second target rotating speed and an actual rotating speed of the silicone oil fan; The control unit is configured to determine a final duty ratio based on the basic duty ratio and the target duty ratio, and control the silicone oil fan to adjust an operating rotating speed of the silicone oil fan according to the final duty ratio, so that the operating rotating speed is equal to the second target rotating speed.

7. A computer readable storage medium characterized in that, The computer readable storage medium comprises a stored program, wherein the program executes the method for controlling the rotating speed of the silicone oil fan according to any one of claims 1-5.

8. A vehicle characterized by comprising: The method comprises the following steps: A processor, a memory and a bus; The processor is connected with the memory through the bus; The memory is configured to store a program, and the processor is configured to run the program, wherein the program runs to execute the method for controlling the rotating speed of the silicone oil fan according to any one of claims 1-5.

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