Clutch temperature estimation method and device, electronic equipment and storage medium

Abstract

The application provides a clutch temperature estimation method and device, electronic equipment and a storage medium, and belongs to the technical field of clutches. The method comprises the following steps: obtaining an initial estimation value of the temperature of the clutch when powered on; calculating the temperature change value of the clutch based on different working states of the clutch; and calculating the real-time temperature estimation value of the clutch based on the initial estimation value of the temperature and the temperature change value. When estimating the temperature of the clutch, the application considers the influence of the initial temperature of the clutch on the calculation of the temperature of the clutch, and also considers the influence of the different temperature changes of the clutch in different working states on the calculation of the temperature of the clutch. Various influencing factors in the calculation of the temperature of the clutch are fully considered, and the estimation of the temperature of the clutch is more accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the clutch technical field, specifically relates to a kind of clutch temperature estimation method, device, electronic equipment and storage medium. BACKGROUND

[0002] Clutch as important automobile parts, its temperature has significant influence on its performance and service life, the control of clutch temperature is generally estimated the temperature of clutch, when clutch temperature is too high, take necessary measures, reduce the influence of high temperature on clutch.

[0003] In prior art, clutch temperature is generally calculated by the way of clutch sliding friction power accumulation, and environment temperature is taken as the initial temperature of clutch to calculate, the influence of the real value of initial temperature of clutch on clutch temperature calculation is ignored.

[0004] Therefore, the prior art is insufficient in considering the factors affecting clutch temperature when calculating clutch temperature, and clutch temperature calculation is inaccurate. SUMMARY

[0005] Therefore, it is necessary to provide a kind of clutch temperature estimation method, device, electronic equipment and storage medium, to solve the technical problems of insufficient consideration of factors affecting clutch temperature in prior art when calculating clutch temperature, and inaccurate clutch temperature calculation.

[0006] In order to solve the above technical problems, on the one hand, the present application provides a kind of clutch temperature estimation method, comprising:

[0007] obtain the initial estimated value of the temperature of clutch when powered on;

[0008] Based on different working conditions of clutch, the temperature change value of clutch is calculated respectively;

[0009] Based on the initial estimated value of temperature and the temperature change value, the real-time temperature estimation value of clutch is calculated.

[0010] In a possible implementation mode, the initial estimated value of the temperature of clutch when powered on is obtained, comprising:

[0011] obtain the first temperature value of engine and the off power temperature estimation value of clutch when last powered off;

[0012] obtain the second temperature value of engine and the on power environment temperature value when this time powered on;

[0013] The initial estimated value of temperature is calculated in combination with the first temperature value, the off power temperature estimation value, the second temperature value and the on power environment temperature value.

[0014] In a possible implementation, the calculating the temperature change value of the clutch based on the different working states of the clutch comprises:

[0015] calculating a first temperature change value of the clutch based on a time length during which the clutch is in the slipping state;

[0016] calculating a second temperature change value of the clutch based on a time length during which the clutch is in the non-slipping state.

[0017] In a possible implementation, the calculating the first temperature change value of the clutch based on the time length during which the clutch is in the slipping state comprises:

[0018] calculating a real-time thermal power of the clutch based on the torque transmitted by the clutch and the slipping speed difference of the clutch;

[0019] calculating the first temperature change value of the clutch in the slipping state based on the real-time thermal power and a temperature rise influence factor of the clutch.

[0020] In a possible implementation, the calculating the second temperature change value of the clutch based on the time length during which the clutch is in the non-slipping state comprises:

[0021] determining an ambient temperature value when the clutch is in the non-slipping state and an estimated temperature value of the clutch at the end of the last slipping state;

[0022] calculating the second temperature change value of the clutch in the non-slipping state based on the ambient temperature value and the estimated temperature value of the clutch at the end of the last slipping state, and in combination with a preset convective heat transfer coefficient.

[0023] In a possible implementation, the calculating the temperature change value of the clutch based on the different working states of the clutch comprises:

[0024] taking a sum of the first temperature change value and the second temperature change value as the temperature change value of the clutch.

[0025] In a possible implementation, before the obtaining the first temperature value of the engine and the estimated power-off temperature value of the clutch at the last power-off, the method comprises:

[0026] determining a time interval between the current power-on and the last power-off and a preset time interval threshold, and when the time interval is less than or equal to the time interval threshold, obtaining the first temperature value of the engine and the estimated power-off temperature value of the clutch at the last power-off;

[0027] when the time interval is greater than the time interval threshold, the obtaining the temperature initial estimated value of the clutch at the power-on comprises:

[0028] The environmental temperature value at this time of power-on is determined as the initial estimated value of the temperature of the clutch.

[0029] In another aspect, the application also provides a clutch temperature estimation device, comprising:

[0030] An initial temperature value acquisition module is configured to acquire an initial estimated value of the temperature of the clutch at power-on.

[0031] A temperature change value calculation module is configured to calculate the temperature change value of the clutch based on different working states of the clutch.

[0032] A temperature estimation module is configured to calculate the real-time temperature estimation value of the clutch based on the initial estimated value of the temperature and the temperature change value.

[0033] In another aspect, the application also provides an electronic device comprising a memory and a processor, wherein,

[0034] The memory is configured to store a program.

[0035] The processor is coupled to the memory and is configured to execute the program stored in the memory to implement the steps of the clutch temperature estimation method in any of the above implementation manners.

[0036] In another aspect, the application also provides a computer readable storage medium configured to store computer readable programs or instructions, which can implement the steps of the clutch temperature estimation method in any of the above implementation manners when executed by a processor.

[0037] The clutch temperature estimation method provided by the application acquires the initial estimated value of the temperature of the clutch at power-on, calculates the temperature change value of the clutch based on different working states of the clutch, and determines the real-time temperature estimation value of the clutch based on the initial estimated value of the temperature and the temperature change value. When estimating the temperature of the clutch, the influence of the initial temperature of the clutch on the calculation of the temperature of the clutch is considered, and the influence of the different temperature changes of the clutch in different working states on the calculation of the temperature of the clutch is also considered. Various influencing factors in the calculation of the temperature of the clutch are fully considered, and the estimation of the temperature of the clutch is more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative effort based on these drawings.

[0039] Figure 1A flowchart of a clutch temperature estimation method provided by the embodiment of the present application is shown in the figure;

[0040] Figure 2 A flowchart of a clutch temperature initial estimation value acquisition method provided by the embodiment of the present application is shown in the figure;

[0041] Figure 3 A clutch temperature and engine water temperature curve diagram changing with time provided by the embodiment of the present application is shown in the figure;

[0042] Figure 4 A flowchart of a clutch temperature change value calculation method provided by the embodiment of the present application is shown in the figure;

[0043] Figure 5 A flowchart of a clutch temperature change calculation method in a sliding state provided by the embodiment of the present application is shown in the figure;

[0044] Figure 6 A flowchart of a clutch temperature change calculation method in a non-sliding state provided by the embodiment of the present application is shown in the figure;

[0045] Figure 7 A structure diagram of a clutch temperature estimation device provided by the embodiment of the present application is shown in the figure;

[0046] Figure 8 A structure diagram of an electronic device provided by the embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0048] The "first", "second" and the like described in the embodiments of the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features or implicitly indicating the number of the technical features. Therefore, the technical features limited by "first" and "second" can explicitly or implicitly include at least one of the features.

[0049] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in one embodiment” in various places in the specification are not necessarily referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments.

[0050] The application provides a clutch temperature estimation method and device, electronic equipment and a storage medium, which are described below.

[0051] The clutch temperature estimation method provided by the embodiment of the application is used for estimating the real-time temperature of the clutch of the automobile, and is mainly applied to the estimation of the real-time temperature of the clutch in the automatic gearbox. The automobile mentioned in the application includes but is not limited to the traditional fuel automobile and the new energy automobile.

[0052] Figure 1 An embodiment flowchart of the clutch temperature estimation method provided by the application is shown in FIG. 1. Figure 1 As shown in FIG. 1, the clutch temperature estimation method comprises the following steps.

[0053] S101, obtaining a temperature initial estimation value of the clutch when power is turned on.

[0054] In the embodiment of the application, the power on refers to the power-on of the whole vehicle, and the temperature initial estimation value of the clutch refers to the temperature value of the clutch when the power is turned on. The temperature value is generally not obtained through a sensor, but is obtained through estimation.

[0055] S102, calculating a temperature change value of the clutch based on different working states of the clutch.

[0056] In the embodiment of the application, the different working states of the clutch refer to the slip state and the non-slip state of the clutch when the engine of the vehicle is started. When the clutch is in different working states, the temperature change of the clutch with time is different, so it is necessary to calculate the temperature change of the clutch separately, and calculate the temperature change value of the clutch in the slip state and the non-slip state respectively, so as to obtain the temperature change value of the clutch.

[0057] As a possible implementation manner of the present application, after the initial estimation of the temperature of the clutch is determined, when the engine of the automobile is started, the real-time estimation of the temperature of the clutch is calculated based on the working state of the clutch, for example, in the first time period after the engine is started, the clutch is in the non-slip state, at this time, the temperature change value of the clutch is calculated in real time based on the temperature change rule of the clutch in the non-slip state, and the real-time estimation of the temperature of the clutch is determined by combining the initial estimation of the temperature of the clutch; in the second time period after the first time period, the clutch is in the slip state, at this time, the temperature change value of the clutch needs to be calculated in real time based on the temperature change rule of the clutch in the slip state, and the real-time estimation of the temperature of the clutch is calculated by combining the real-time estimation of the temperature of the clutch at the end of the previous non-slip state; according to this logic, the temperature change value of the clutch can be calculated in real time based on the change of the working state of the clutch.

[0058] S103, calculating the real-time estimation of the temperature of the clutch based on the initial estimation of the temperature and the temperature change value.

[0059] In the embodiment of the present application, the real-time estimation of the temperature of the clutch can be calculated based on the initial estimation of the temperature of the clutch and the temperature change value obtained by the above S101 and S102. The real-time estimation of the temperature of the clutch is real-time change, therefore, when the temperature change value of the clutch is calculated, the temperature change value can be calculated every small time period in a state maintaining time period, and the real-time estimation of the temperature of the clutch is determined in real time by combining the initial estimation of the temperature of the clutch.

[0060] The clutch temperature estimation method provided by the present application obtains the initial estimation of the temperature of the clutch when powered on, and calculates the temperature change value of the clutch when the clutch is in different working states respectively, determines the real-time estimation of the temperature of the clutch based on the initial estimation of the temperature and the temperature change value, considers the influence of the initial temperature of the clutch on the calculation of the temperature of the clutch, and considers the influence of the different temperature changes of the clutch in different working states on the calculation of the temperature of the clutch, fully considers various influencing factors in the calculation of the temperature of the clutch, and the estimation of the temperature of the clutch is more accurate.

[0061] As a possible implementation manner of the present application, in the implementation manner, Figure 2 as shown in the figure, the initial estimation of the temperature of the clutch when powered on is obtained, including:

[0062] S201, obtaining the first temperature value of the engine and the power-off temperature estimation of the clutch when the last power-off occurs.

[0063] S202, obtaining the second temperature value of the engine and the power-on ambient temperature value when the current power-on occurs;

[0064] S203 , calculating an initial estimated clutch temperature value by combining the first temperature value, the power-off temperature estimated value, the second temperature value, and the power-on ambient temperature value.

[0065] As in the aforementioned embodiment, the initial estimated value of the clutch temperature is related to a variety of factors, including the ambient temperature at power-on, the engine temperature, the estimated clutch temperature at the last power-off, the interval between the current power-on and the last power-off, etc., wherein the first temperature value of the engine at the last power-off refers to the temperature of the engine coolant when the car was last powered off, and this temperature value can be directly measured by a sensor; the clutch power-off temperature value refers to the real-time estimated value of the clutch temperature when the car was last shut down; optionally, the first water temperature value and the power-off temperature value can be stored in a non-erasable memory when powered off, and can be directly read when powered on again. Optionally, the second temperature value of the engine at the current power-on refers to the real-time temperature value of the engine at the current power-on, and this temperature value can also be directly measured by a sensor. The power-on ambient temperature value at the current power-on refers to the real-time ambient temperature value around the clutch at the current power-on, and this ambient temperature value can be directly measured by a temperature sensor.

[0066] As a possible embodiment of the present invention, Figure 3 As shown, taking an embodiment as an example, the last time the car was powered off is ,exist At this moment, the clutch power-off temperature is estimated to be , the first temperature value of the engine is In an optional embodiment, the engine temperature versus time graph and the clutch temperature versus time graph are as follows: Figure 3 As shown, in At this moment, the car is powered on again, and the second temperature value of the engine measured at this time is , the ambient temperature is , then the initial value of clutch temperature estimation satisfies formula (1):

[0067] (1)

[0068] By transforming formula (1), we can get formula (2):

[0069] (2)

[0070] Combining the above formula, the initial estimated value of the clutch temperature when the car is powered on can be calculated.

[0071] As a possible implementation of the present application, when the automobile engine is turned off after running for a period of time, the engine and the clutch no longer generate heat, and the temperatures of the clutch and the engine will decrease over time. At this time, the clutch temperature estimation method of the embodiment of the present application can still be used to estimate the real-time temperature of the clutch; wherein, the first temperature value of the engine at the last power-off and the power-off temperature estimation value of the clutch correspond to the first temperature value of the engine and the temperature estimation value of the clutch at the time of power-off, and the second temperature value of the engine at the current power-on and the power-on ambient temperature value correspond to the real-time temperature value of the engine and the real-time ambient temperature value. By using formulas (1) and (2) given in the implementation of the present application, the real-time temperature estimation value of the clutch at the current engine shutdown can be calculated.

[0072] The embodiment of the present invention determines an initial estimated clutch temperature value by combining the ambient temperature at power-on, the engine temperature, the estimated clutch temperature at the last power-off, etc., thereby ensuring the accuracy of the initial estimated clutch temperature value.

[0073] The prior art still has a technical problem that the temperature change of the clutch in the non-slip state is not considered, resulting in inaccurate clutch temperature estimation. Based on this technical problem, the embodiment of the present application provides a possible implementation method. In this implementation method, Figure 4 As shown, based on different working states of the clutch, the temperature change value of the clutch is calculated respectively, including:

[0074] S401, when the clutch is in a slipping state, calculating a first temperature change value of the clutch based on a duration of the clutch being in the slipping state;

[0075] S402 : When the clutch is in a non-slipping state, a second temperature change value of the clutch is calculated based on a duration of time the clutch is in the non-slipping state.

[0076] In the embodiment of the present invention, when the clutch is in the slip state, the clutch will generate heat due to friction, and the temperature of the clutch will rise rapidly. The longer the clutch is in the slip state, the higher the clutch temperature. When calculating the specific temperature change value of the clutch in the slip state, such as Figure 5 As shown, including:

[0077] S501, calculating the real-time thermal power of the clutch based on the clutch transmission torque and the clutch slip speed difference;

[0078] S502 : Calculate a first temperature change value of the clutch in a slipping state based on the real-time thermal power and the clutch temperature rise influence factor.

[0079] In the embodiment of the present application, when the temperature change value of the clutch in the slip state is calculated, the heat power of the clutch and the temperature rise influence factor of the clutch can be used, wherein the temperature rise influence factor of the clutch includes the density of the clutch friction plate , the specific heat capacity of the clutch friction plate c , and the volume of the clutch friction plate v Because the clutch is in the slip state, friction heat is generated, and when the clutch is in the slip state, the heat power P = clutch transmission torque * clutch slip speed difference, wherein the clutch transmission torque = engine torque - engine moment of inertia * engine angular acceleration; according to the working characteristics of the clutch, when the clutch is in the slip state, the heat power will be dissipated in two aspects, which are the flywheel end and the clutch pressure plate end, therefore, only half of the heat power will cause the clutch to heat up, and the temperature change value of the clutch in the slip state can be calculated by using formula (3):

[0080] (3)

[0081] wherein, is the temperature change value of the clutch in the slip state, is the cumulative value of the heat power of the clutch in the slip state, is the density of the clutch friction plate, c is the specific heat capacity of the clutch friction plate, v is the volume of the clutch friction plate.

[0082] In the embodiment of the present application, when the clutch is in the non-slip state, that is, the clutch is in the fully open or fully closed state, the temperature of the clutch will be affected by the surrounding environment, and when the temperature change value of the clutch in the non-slip state is calculated, as shown in formula (4), it includes: Figure 6

[0083] S601, determining the environmental temperature value when the clutch is in the non-slip state and the temperature estimation value of the clutch at the end of the last slip state;

[0084] S602, based on the environmental temperature value and the temperature estimation value of the clutch at the end of the last slip state, and combined with the preset convective heat transfer coefficient, calculating the second temperature change value of the clutch in the non-slip state.

[0085] ​In the embodiment of the present application, the maximum factor affecting the temperature change value of the clutch in the non-slip state is the environmental factor of the clutch. Therefore, when the clutch is in the non-slip state, the environmental temperature of the clutch is first obtained, which can be measured by a temperature sensor installed around the clutch or directly taken as the engine temperature; the temperature estimation value of the clutch at the end of the previous slip state is obtained, which is calculated by the temperature change value of the clutch in the slip state in the previous embodiment and the initial temperature estimation value of the clutch; on this basis, the convection heat transfer coefficient is combined, and the temperature change value of the clutch in the non-slip state is calculated by formula (4):

[0086] (4)

[0087] wherein, is the temperature change value of the clutch in the non-slip period, k is the convection heat transfer coefficient, which is related to the speed of the clutch and the speed of the vehicle, and can be obtained by testing; is the real-time temperature estimation value of the clutch, at the beginning of the non-slip state, is the temperature estimation value of the clutch at the end of the previous slip state, is the environmental temperature of the clutch in the non-slip state, is the cumulative value of the temperature of the clutch in the non-slip period.

[0088] As a possible implementation manner of the present application, in the implementation manner, the temperature change value of the clutch is calculated based on different working states of the clutch, including:

[0089] The sum of the first temperature change value and the second temperature change value is taken as the temperature change value of the clutch.

[0090] In the embodiment of the present application, after the first temperature change value of the clutch in the slip state and the second temperature change value of the clutch in the non-slip state are calculated by the method of the previous embodiment, the real-time temperature estimation value of the clutch is calculated in real time based on the first temperature change value and the second temperature change value by formula (5):

[0091] (5)

[0092] wherein, T is the real-time temperature estimation value of the clutch.

[0093] The embodiment of the present application calculates the initial estimated value of the temperature of the clutch by the temperature of the generator at the last power-off, the estimated value of the temperature of the clutch at the last power-off, the ambient temperature value at this time of power-on, and the temperature value of the generator at this time of power-on, so that the initial estimated value of the temperature of the clutch is more accurate, and the calculation of the temperature change of the clutch in the sliding state and the non-sliding state is more accurate, thereby further ensuring the accuracy of the estimated value of the temperature of the clutch.

[0094] As a possible implementation of the present application, before the first temperature value of the engine at the last power-off and the estimated value of the power-off temperature of the clutch are obtained, the following steps are included:

[0095] The interval length between the present power-on and the last power-off is determined, and when the interval length is less than or equal to the preset time interval threshold, the first temperature value of the engine at the last power-off and the estimated value of the power-off temperature of the clutch are obtained.

[0096] When the interval length is greater than the time interval threshold, the initial estimated value of the temperature of the clutch at the present power-on is obtained, including:

[0097] The ambient temperature value at the present power-on is determined as the initial estimated value of the temperature of the clutch.

[0098] In the embodiment of the present application, before the first temperature value of the engine at the last power-off and the estimated value of the power-off temperature of the clutch are obtained, the interval length between the present power-on and the last power-off can be determined first, and when the interval length is less than or equal to the preset time interval threshold, the steps in the foregoing S201-S203 are executed, and when the time interval between the present power-on and the last power-off of the automobile is greater than the preset time interval threshold, the engine temperature and the clutch temperature have both dropped to the ambient temperature at this time, for the convenience of calculation, the ambient temperature at this time of power-on can be directly used as the initial estimated value of the temperature of the clutch, and the ambient temperature value at this time of power-on is generally measured directly by a temperature sensor.

[0099] The embodiment of the present application directly uses the ambient temperature at this time of power-on as the initial estimated value of the temperature of the clutch when the time interval between the present power-on and the last power-off is greater than the preset time interval threshold, so that the initial estimated value of the temperature of the clutch is more convenient and accurate to obtain.

[0100] In order to better implement the clutch temperature estimation method in the embodiment of the present application, on the basis of the clutch temperature estimation method, as shown in Figure 7 The embodiment of the present application also provides a clutch temperature estimation device, and the clutch temperature estimation device 700 includes:

[0101] The initial temperature value acquisition module 701 is used to obtain the initial estimated value of the clutch temperature when power is turned on;

[0102] A temperature change value calculation module 702 is used to calculate the temperature change value of the clutch based on different working states of the clutch;

[0103] The temperature estimation module 703 is configured to calculate a real-time temperature estimation value of the clutch based on the initial temperature estimation value and the temperature change value.

[0104] The clutch temperature estimation device 700 provided in the above embodiment can implement the technical solution described in the above clutch temperature estimation method embodiment. The specific implementation principles of the above modules or units can refer to the corresponding contents in the above clutch temperature estimation method embodiment, which will not be repeated here.

[0105] The clutch temperature estimation device provided in an embodiment of the present invention obtains an initial clutch temperature estimate upon power-up, calculates clutch temperature variations based on the clutch's different operating states, and determines a real-time clutch temperature estimate based on the initial and temperature variations. When estimating clutch temperature, the device considers the impact of the clutch's initial temperature on the clutch temperature calculation, as well as the impact of the clutch's temperature variations on the clutch temperature calculation when the clutch is in different operating states. This fully accounts for various factors influencing clutch temperature calculation, resulting in more accurate clutch temperature estimation. Furthermore, the initial clutch temperature estimate is calculated using the generator temperature at the last time the clutch was powered off, the clutch temperature estimate at the last time it was powered off, the ambient temperature at the current power-up, and the generator temperature at the current power-up, further ensuring more accurate acquisition of the initial clutch temperature estimate. Furthermore, by calculating clutch temperature variations between slipping and non-slipping states, the clutch temperature variation is more accurately calculated, further ensuring the accuracy of clutch temperature estimation.

[0106] like Figure 8 As shown, the present invention also provides an electronic device 800. The electronic device 800 includes a processor 801, a memory 802 and a display 803. Figure 8 Only some of the components of the electronic device 800 are shown, but it should be understood that implementation of all of the shown components is not required, and more or fewer components may be implemented instead.

[0107] In some embodiments, the processor 801 may be a central processing unit (CPU), a microprocessor, or other data processing chip, configured to execute program codes or process data stored in the memory 802 , such as the clutch temperature estimation method of the present invention.

[0108] In some embodiments, the processor 801 can be a single server or a group of servers. The group of servers can be centralized or distributed. In some embodiments, the processor 801 can be local or remote. In some embodiments, the processor 801 can be implemented in a cloud platform. In an embodiment, the cloud platform can include a private cloud, a public cloud, a hybrid cloud, a community cloud, a distributed cloud, an on-premises cloud, a multi-cloud, or the like, or any combination thereof.

[0109] The memory 802 can be an internal storage unit of the electronic device 800, such as a hard disk or a memory of the electronic device 800, in some embodiments. The memory 802 can also be an external storage device of the electronic device 800, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, or the like, equipped on the electronic device 800, in other embodiments.

[0110] Further, the memory 802 can include both an internal storage unit and an external storage device of the electronic device 800. The memory 802 is used to store application software and various data installed on the electronic device 800.

[0111] The display 803 can be an LED display, a liquid crystal display, a touch liquid crystal display, an OLED (Organic Light-Emitting Diode) touch, or the like, in some embodiments. The display 803 is used to display information of the electronic device 800 and to display a visualized user interface. The components 801-803 of the electronic device 800 communicate with each other through a system bus.

[0112] In an embodiment, when the processor 801 executes the clutch temperature estimation program in the memory 802, the following steps can be implemented:

[0113] An initial estimated value of a temperature of the clutch at power-on is obtained;

[0114] A temperature change value of the clutch is calculated based on different working states of the clutch;

[0115] A real-time temperature estimation value of the clutch is calculated based on the initial estimated value of the temperature and the temperature change value.

[0116] It should be understood that, in addition to the above functions, the processor 801 can also implement other functions when executing the clutch temperature estimation program in the memory 802. For details, refer to the description of the corresponding method embodiments.

[0117] Further, the embodiments of the present application do not make specific limitation on the type of the electronic device 800 mentioned above, and the electronic device 800 can be a mobile phone, a tablet computer, a personal digital assistant (PDA), a wearable device, a laptop computer, or the like. Exemplary embodiments of the portable electronic device include, but are not limited to, a portable electronic device running an IOS, an android, a microsoft, or other operating system. The portable electronic device described above can also be other portable electronic devices, such as a laptop computer having a touch-sensitive surface (e.g., a touch panel), and the like. It should also be understood that in some other embodiments of the present application, the electronic device 800 can also not be a portable electronic device, but a desktop computer having a touch-sensitive surface (e.g., a touch panel).

[0118] Correspondingly, the embodiments of the present application also provide a computer readable storage medium for storing computer readable programs or instructions, which, when executed by a processor, can implement the steps or functions in the clutch temperature estimation method provided by the above-mentioned method embodiments.

[0119] Those skilled in the art can understand that all or part of the processes of the above-mentioned embodiments can be completed by a computer program instructing relevant hardware (such as a processor, a controller, etc.) to complete, and the computer program can be stored in a computer readable storage medium. The computer readable storage medium is a magnetic disk, an optical disk, a read-only memory, or a random access memory, etc.

[0120] The above describes in detail the clutch temperature estimation method, device, electronic device, and storage medium provided by the present application. The principles and implementation manners of the present application are described by applying specific examples in this paper. The above description of the embodiments is only used to help understand the method of the present application and its core idea. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range can be changed. In summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A clutch temperature estimation method, characterized in that: include: Get the initial estimated clutch temperature at power-on; Calculating the temperature change value of the clutch based on different working states of the clutch; calculating a real-time temperature estimate of the clutch based on the initial temperature estimate and the temperature change; The obtaining of an initial estimated value of the clutch temperature at power-on includes: Obtaining a first temperature value of the engine and an estimated power-off temperature value of the clutch when the power was last turned off; Obtaining a second temperature value of the engine and a power-on ambient temperature value during this power-on; Calculating the initial temperature estimate value by combining the first temperature value, the power-off temperature estimate value, the second temperature value, and the power-on ambient temperature value; The calculating of the temperature change value of the clutch based on different working states of the clutch includes: When the clutch is in a slipping state, calculating a first temperature change value of the clutch based on a duration of the clutch being in the slipping state; When the clutch is in a non-slip state, calculating a second temperature change value of the clutch based on a duration of time the clutch is in the non-slip state; The calculation formula for the initial estimated temperature is: in, is the initial estimated value of the temperature, is the ambient temperature, is the second temperature value of the engine when it is powered on this time, is the estimated clutch power-off temperature, The first temperature value of the engine when it was last powered off.

2. The clutch temperature estimation method according to claim 1, characterized in that: The calculating of the first temperature change value of the clutch based on the duration of time the clutch is in the slipping state includes: Calculate the real-time thermal power of the clutch based on the clutch transmission torque and the clutch slip speed difference; Based on the real-time thermal power and the clutch temperature rise influence factor, a first temperature change value of the clutch in the slipping state is calculated.

3. The clutch temperature estimation method according to claim 2, characterized in that: The calculating of the second temperature change value of the clutch based on the duration of time the clutch is in the non-slip state includes: determining an ambient temperature value when the clutch is in a non-slip state and an estimated temperature value of the clutch at the end of a previous slipping state; Based on the ambient temperature value and the estimated temperature value of the clutch at the end of the previous slipping state, combined with a preset convection heat transfer coefficient, a second temperature change value of the clutch in the non-slipping state is calculated.

4. The clutch temperature estimation method according to claim 1, characterized in that: The calculating of the temperature change value of the clutch based on different working states of the clutch includes: The sum of the first temperature change value and the second temperature change value is used as the temperature change value of the clutch.

5. The clutch temperature estimation method according to claim 1, characterized in that: Before obtaining the first temperature value of the engine and the estimated power-off temperature value of the clutch at the last power-off, the method includes: Determine whether the interval between the current power-on and the last power-off is greater than a preset time interval threshold, and when the interval is less than or equal to the time interval threshold, obtain a first temperature value of the engine at the time of the last power-off and an estimated power-off temperature value of the clutch; When the interval time is greater than the time interval threshold, obtaining the initial estimated value of the clutch temperature at power-on includes: The ambient temperature value at the time of power-on is determined as the initial estimated value of the clutch temperature.

6. A clutch temperature estimation device, applicable to the clutch temperature estimation method according to any one of claims 1 to 5, characterized in that: include: The temperature initial value acquisition module is used to obtain the initial estimated value of the clutch temperature when power is turned on; A temperature change value calculation module, used to calculate the temperature change value of the clutch based on different working states of the clutch; The temperature estimation module is configured to calculate a real-time temperature estimation value of the clutch based on the initial temperature estimation value and the temperature change value.

7. An electronic device, characterized in that: comprising a memory and a processor, wherein, The memory is used to store programs; The processor is coupled to the memory and is configured to execute the program stored in the memory to implement the steps of the clutch temperature estimation method according to any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that Used to store computer-readable programs or instructions, which, when executed by a processor, can implement the steps of the clutch temperature estimation method according to any one of claims 1 to 5.

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