Vehicle compressor rotating speed control method and device, vehicle and storage medium

Abstract

The invention relates to the technical field of vehicles, in particular to a vehicle compressor rotating speed control method and device, a vehicle and a storage medium, and the method comprises the steps that whether the compressor required rotating speed of an air conditioning system in the current running state is in a compressor allowable running interval or not is judged; if the required rotation number of the compressor is not in the preset allowable operation interval of the compressor, a current pressure interval is generated according to the condensing pressure and the evaporating pressure of the air conditioning system, and whether the current pressure interval is in a first preset interval or not is judged; if yes, the required revolution of the compressor is adjusted according to the actual temperature of the environment where the vehicle is located until the vehicle is in the allowable operation range. According to the embodiment of the invention, when the required rotation number of the compressor is not in the allowable rotation speed interval of the compressor, the required rotation number of the compressor can be adjusted through the pressure interval where the condensing pressure and the evaporating pressure of the air conditioning system are located, overload and overcurrent of the compressor are avoided, and the operation stability of the air conditioning system is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a method and device for controlling the speed of a compressor of a vehicle, a vehicle, and a storage medium. Background Art

[0002] With the development of automobile electrification, the utilization rate of electric compressors is increasing. During the operation of the air-conditioning system, due to the excessively high system pressure, the air-conditioning controller's demand for the compressor speed exceeds the compressor's capacity under the system state, resulting in problems such as overcurrent and overload in the compressor.

[0003] In the related art, the compressor speed control method of the automatic air conditioning system is generally to determine the target temperature of the evaporator according to the ambient temperature value, the air volume gear and the temperature gear after the compressor is started, and calculate the difference between the actual temperature and the target temperature. If the temperature difference is greater than zero, the compressor is controlled to work at a fixed speed corresponding to the temperature difference. When the temperature reaches the target temperature, the compressor is controlled to work at a low speed. If the compressor start-up conditions are met, the compressor is controlled to start again. If the temperature difference is less than zero, the compressor is controlled to work at a low speed.

[0004] However, the related art relies on a fixed speed setting, which results in the compressor's response being inflexible in complex situations, and the compressor speed needs to be adjusted only after the actual temperature reaches the target temperature, resulting in a slow response speed, reducing the flexibility and timeliness of the compressor speed adjustment, and reducing the user's driving comfort, which urgently needs to be resolved. Summary of the invention

[0005] The present application provides a vehicle compressor speed control method, device, vehicle and storage medium to solve the problem in the related art that the compressor relies on a fixed speed setting, resulting in insufficient flexibility in response of the compressor in complex situations, and the need to wait until the actual temperature reaches the target temperature before adjusting the compressor speed, resulting in a slow response speed and reduced user driving comfort.

[0006] A first aspect of the present application provides a method for controlling a compressor speed of a vehicle, comprising the following steps: obtaining a compressor demand speed of an air-conditioning system of the vehicle in a current operating state, and determining whether the compressor demand speed is in a preset compressor allowable operating range; if the compressor demand speed is not in the preset compressor allowable operating range, collecting a condensing pressure and an evaporating pressure of the air-conditioning system; generating a current pressure range according to the condensing pressure and the evaporating pressure, and determining whether the current pressure range is in a first preset range, wherein if the current pressure range is in the first preset range, adjusting the compressor demand speed according to the actual temperature of the vehicle's environment until it is in the preset compressor allowable operating range.

[0007] Optionally, in one embodiment of the present application, adjusting the required compressor speed according to the actual temperature of the vehicle's environment until it is in the preset compressor allowable operating range includes: determining whether the actual temperature is lower than the preset temperature; if the actual temperature is lower than the preset temperature, adjusting the fan speed of the air-conditioning system, and adjusting the required compressor speed according to the fan speed until it is in the preset compressor allowable operating range; if the actual temperature is greater than or equal to the preset temperature, or the fan speed reaches the maximum speed, controlling the air-conditioning system to open a large-diameter valve to relieve pressure until the required compressor speed is in the preset compressor allowable operating range.

[0008] Optionally, in one embodiment of the present application, before collecting the condensing pressure and the evaporating pressure of the air-conditioning system, it also includes: if the compressor demand speed is in the preset compressor allowable operating range, then controlling the compressor operation of the air-conditioning system according to the compressor demand speed.

[0009] Optionally, in one embodiment of the present application, before determining whether the current pressure interval is in the first preset interval, it also includes: determining whether the current pressure interval is in the second preset interval; if the current pressure interval is in the second preset interval, determining that the current refrigerant value of the air-conditioning system is lower than the first preset refrigerant value, and sending a prompt message that the refrigerant is too low to the user's preset terminal.

[0010] Optionally, in one embodiment of the present application, before determining whether the current pressure interval is in the first preset interval, it also includes: determining whether the current pressure interval is in a third preset interval; if the current pressure interval is in the third preset interval, determining that the current refrigerant value of the air-conditioning system is higher than the second preset refrigerant value, and sending a prompt message that the refrigerant is too much to the preset terminal, wherein the first preset refrigerant value is less than the second preset refrigerant value.

[0011] Optionally, in one embodiment of the present application, before determining whether the current pressure interval is in the first preset interval, it also includes: determining whether the current pressure interval is in a fourth preset interval; if the current pressure interval is in the fourth preset interval, determining that the compressor is abnormal, controlling the vehicle controller to perform self-inspection, and determining the fault type of the compressor based on the self-inspection result, so as to send the fault type to the preset terminal.

[0012] A second aspect of the present application provides a compressor speed control device for a vehicle, comprising: an acquisition module, used to acquire the compressor demand speed of the vehicle's air-conditioning system in the current operating state, and determine whether the compressor demand speed is in a preset compressor allowable operating range; a collection module, used to collect the condensing pressure and evaporating pressure of the air-conditioning system if the compressor demand speed is not in the preset compressor allowable operating range; a control module, used to generate a current pressure range based on the condensing pressure and the evaporating pressure, and determine whether the current pressure range is in a first preset range, wherein if the current pressure range is in the first preset range, the compressor demand speed is adjusted according to the actual temperature of the vehicle's environment until it is in the preset compressor allowable operating range.

[0013] Optionally, in one embodiment of the present application, the control module includes: a judgment unit, used to judge whether the actual temperature is lower than the preset temperature; a first processing unit, used to adjust the fan speed of the air-conditioning system if the actual temperature is lower than the preset temperature, and adjust the required speed of the compressor according to the fan speed until it is in the preset compressor allowable operating range; a second processing unit, used to control the air-conditioning system to open a large-diameter valve to relieve pressure if the actual temperature is greater than or equal to the preset temperature, or the fan speed reaches the maximum speed, until the required speed of the compressor is in the preset compressor allowable operating range.

[0014] Optionally, in one embodiment of the present application, the device of the embodiment of the present application also includes: a control module, which is used to control the operation of the compressor of the air-conditioning system according to the compressor demand speed if the compressor demand speed is in the preset compressor allowable operating range before collecting the condensing pressure and evaporating pressure of the air-conditioning system.

[0015] Optionally, in one embodiment of the present application, the device of the embodiment of the present application also includes: a first judgment module, used to determine whether the current pressure interval is in a second preset interval before determining whether the current pressure interval is in the first preset interval; a first processing module, used to determine that the current refrigerant value of the air-conditioning system is lower than the first preset refrigerant value before determining whether the current pressure interval is in the first preset interval, if the current pressure interval is in the second preset interval, and send a prompt message that the refrigerant is too low to the user's preset terminal.

[0016] Optionally, in one embodiment of the present application, the device of the embodiment of the present application also includes: a second judgment module, used to judge whether the current pressure interval is in a third preset interval before judging whether the current pressure interval is in the first preset interval; a second processing module, used to determine whether the current refrigerant value of the air-conditioning system is higher than the second preset refrigerant value before judging whether the current pressure interval is in the first preset interval, if the current pressure interval is in the third preset interval, and send a prompt message of excessive refrigerant to the preset terminal, wherein the first preset refrigerant value is less than the second preset refrigerant value.

[0017] Optionally, in one embodiment of the present application, the device of the embodiment of the present application also includes: a third judgment module, used to judge whether the current pressure interval is in a fourth preset interval before judging whether the current pressure interval is in the first preset interval; a third processing module, used to judge that the compressor is abnormal if the current pressure interval is in the fourth preset interval before judging whether the current pressure interval is in the first preset interval, control the vehicle controller to perform self-inspection, and determine the fault type of the compressor according to the self-inspection result, so as to send the fault type to the preset terminal.

[0018] A third aspect of the present application provides a vehicle, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the compressor speed control method of the vehicle as described in the above embodiment.

[0019] A fourth aspect of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, which, when executed by a processor, implements the above-mentioned method for controlling the compressor speed of a vehicle.

[0020] A fifth aspect of the present application provides a computer program product, including a computer program, which, when executed, is used to implement the above-mentioned method for controlling the compressor speed of a vehicle.

[0021] The embodiment of the present application can adjust the compressor demand speed by the pressure range of the condensing pressure and evaporation pressure of the air-conditioning system when the compressor demand speed is not in the compressor allowable speed range, so as to avoid compressor overload and overcurrent and improve the stability of the air-conditioning system operation. Thus, the problem that the related art relies on fixed speed setting, resulting in the compressor's response being not flexible enough in complex situations, and the compressor speed needs to be adjusted only after the actual temperature reaches the target temperature, which reduces the timeliness of the response speed.

[0022] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0024] Figure 1 A flowchart of a compressor speed control method for a vehicle provided according to an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the structure of an air conditioning system provided according to an embodiment of the present application;

[0026] Figure 3 A schematic diagram of the compressor speed corresponding to the current pressure interval S5 zone generated by the condensing pressure and the evaporating pressure in a specific embodiment of the present application;

[0027] Figure 4 A schematic diagram of a current pressure range generated for the condensing pressure and the evaporating pressure of a specific embodiment of the present application;

[0028] Figure 5 A schematic diagram of the principle of compressor speed control of a vehicle according to a specific embodiment of the present application;

[0029] Figure 6 It is a structural schematic diagram of a compressor speed control device for a vehicle provided according to an embodiment of the present application;

[0030] Figure 7 It is a schematic diagram of the structure of a vehicle provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0031] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0032] The following describes the compressor speed control method, device, vehicle and storage medium of the vehicle of the embodiment of the present application with reference to the accompanying drawings. In view of the problem that the related art mentioned in the background technology center above relies on a fixed speed setting, resulting in the compressor's response being not flexible enough in complex situations, and the compressor speed needs to be adjusted after the actual temperature reaches the target temperature, resulting in a slow response speed and reducing the user's driving comfort, the present application provides a compressor speed control method for a vehicle, in which the compressor demand speed can be adjusted by the pressure range where the condensing pressure and evaporation pressure of the air-conditioning system are located when the compressor demand speed is not in the compressor allowable speed range, so as to avoid compressor overload and overcurrent and improve the stability of the air-conditioning system operation. Thus, the problem that the related art relies on a fixed speed setting, resulting in the compressor's response being not flexible enough in complex situations, and the compressor speed needs to be adjusted after the actual temperature reaches the target temperature, resulting in a slow response speed and reducing the user's driving comfort is solved.

[0033] Specifically, Figure 1 A flow chart of a method for controlling the speed of a compressor of a vehicle provided in an embodiment of the present application.

[0034] like Figure 1 As shown, the compressor speed control method of the vehicle includes the following steps:

[0035] In step S101 , the required speed of the compressor of the air-conditioning system of the vehicle in the current operating state is obtained, and it is determined whether the required speed of the compressor is within a preset compressor allowable operating range.

[0036] It can be understood that the embodiments of the present application can obtain the required compressor speed of the vehicle's air-conditioning system in the current operating state, for example, obtain the required compressor speed in the air-conditioning single cooling state, the battery fast cooling request state or the double cooling request state, and determine whether the required compressor speed is in the allowable operating range of the compressor in the corresponding state, wherein the allowable operating range of the compressor of the air-conditioning system in different operating states is also different, which effectively improves the feasibility of the compressor speed control.

[0037] For example, Figure 2 The figure shows a schematic diagram of the vehicle's air-conditioning system, which includes a compressor, an electronic expansion valve, a condenser, an evaporator, a fan, a large-diameter valve and a pressure transmitter. The refrigerant circulates continuously in the air-conditioning system, and heat is transferred through the process of compression, condensation, throttling and evaporation, thereby achieving the purpose of cooling.

[0038] Among them, in the embodiment of the present application, when the whole vehicle is in the air-conditioning single-open cooling mode, the compressor demand speed is: SPD=min(SPD1, SPD3); when the whole vehicle is in the battery fast cooling request, the compressor demand speed is: SPD=min(SPD2, SPD3); when the whole vehicle is in the dual-open cooling request, the compressor demand speed is: SPD=min(max(SPD1, SPD2), SPD3).

[0039] For example, when the compressor receives a cooling request, the compressor enters a standby state.

[0040] (1) When the vehicle needs to operate the air conditioner only for cooling, first calculate the evaporator target temperature and the compressor target speed:

[0041] SPD1=f(SPD(n-1),Kpi,δT),

[0042] Among them, SPD(n-1) is the compressor speed before the vehicle demand command is issued, Kpi is the PI adjustment constant, and δT is the difference between the evaporator target temperature and the actual temperature.

[0043] At this time, the air conditioner controller requires the compressor speed to be SPD=min(SPD1, SPD3), where SPD3 is the upper limit of the compressor speed at the target wind speed. Table 1 is a table of the upper limit of the compressor speed at the target wind speed. Table 1 is as follows:

[0044] Table 1

[0045] Blower gear 0 Low middle high Compressor upper speed limit 3500 3500 5500 8500

[0046] (2) When the vehicle demand is a single battery fast cooling request, the compressor target speed SPD2 is first calculated based on the battery fast cooling power, and SPD3 is the upper limit of the compressor speed under the target wind speed. At this time, the air conditioning controller requires the compressor speed to be SPD=min(SPD2, SPD3), where Table 2 is a table of the corresponding relationship between cooling power and compressor speed, as shown in Table 2:

[0047] Table 2

[0048]

[0049] (3) When the vehicle demand is dual-open mode, that is, AC and battery fast cooling are turned on at the same time. First, calculate the evaporator target temperature SPD1 = f(SPD(n-1), Kpi, δT), then calculate the compressor required speed according to the battery fast cooling power, the corresponding relationship between cooling power and compressor speed is shown in Table 2, calculate max(SPD1, SPD2), and then obtain the compressor speed upper limit SPD3 according to Table 1. At this time, the air conditioning controller requires the compressor speed SPD = min(max(SPD1, SPD2), SPD3).

[0050] Therefore, the embodiment of the present application can judge whether the compressor demand speed SPD of the air-conditioning system under different operating conditions is ∈ the compressor allowable operating range SPD4 under the corresponding state, so as to take corresponding control measures in time to optimize the compressor speed when the compressor demand speed is not in the compressor allowable operating range, thereby effectively improving the feasibility of compressor speed control.

[0051] In step S102, if the required speed of the compressor is not within the preset allowable operating range of the compressor, the condensing pressure and the evaporating pressure of the air-conditioning system are collected.

[0052] It is understandable that the embodiment of the present application can be used when the required speed of the compressor is not within the allowable operating range of the compressor in the above steps, such as when When the condensing pressure and evaporating pressure of the air-conditioning system are collected, that is, the high pressure and low pressure of the refrigerant in the air-conditioning system, the corresponding control method can be adopted to optimize the compressor speed and avoid compressor overload and overcurrent.

[0053] In step S103, a current pressure interval is generated based on the condensing pressure and the evaporating pressure, and it is determined whether the current pressure interval is in a first preset interval. If the current pressure interval is in the first preset interval, the required compressor speed is adjusted according to the actual temperature of the vehicle's environment until it is in the preset compressor allowable operating range.

[0054] It is understandable that the embodiment of the present application can generate the current pressure interval according to the condensing pressure and the evaporating pressure, for example, in combination with Figure 3 and Figure 4 As shown, the embodiment of the present application can determine the current pressure interval and judge whether the current pressure interval is in the first preset interval, such as Figure 4 In the S4 zone, when the current pressure interval is in the first preset interval, i.e., the S4 zone, the embodiment of the present application can adjust the required speed of the compressor according to the actual temperature of the vehicle's environment until the required speed of the compressor is in the allowable operating range of the compressor corresponding to the S4 zone, thereby avoiding compressor overload and overcurrent, improving the stability of the air-conditioning system operation, and enhancing the driving comfort of users.

[0055] Among them, in one embodiment of the present application, the required compressor speed is adjusted according to the actual temperature of the vehicle's environment until it is in a preset compressor allowable operating range, including: determining whether the actual temperature is lower than the preset temperature; if the actual temperature is lower than the preset temperature, adjusting the fan speed of the air-conditioning system, and adjusting the required compressor speed according to the fan speed until it is in the preset compressor allowable operating range; if the actual temperature is greater than or equal to the preset temperature, or the fan speed reaches the maximum speed, controlling the air-conditioning system to open a large-diameter valve to relieve pressure until the required compressor speed is in the preset compressor allowable operating range.

[0056] For example, combined with Figure 4 and Figure 5 As shown, the embodiment of the present application can determine whether the actual temperature is less than 40°C. When the actual temperature is less than 40°C, the fan gear F of the air conditioning system is adjusted, and when the fan gear does not reach the highest gear, the air conditioning gear is adjusted to the F+1 gear to achieve Figure 4 The fan speed is adjusted by switching from 1 to 2, and the required speed of the compressor is adjusted according to the fan speed until it is in the allowable operating range of the compressor corresponding to zone S4.

[0057] In addition, when the actual temperature is greater than or equal to 40°C, or the fan gear reaches the highest gear, that is, the fan speed reaches the highest speed, the air conditioning system is controlled to open the large-diameter valve to release pressure, so as to achieve Figure 4 The change of 1 or 2 in the middle is carried out until the required speed of the compressor is in the allowable operating range of the compressor corresponding to the S4 zone, thereby effectively avoiding compressor overload and overcurrent.

[0058] Optionally, in one embodiment of the present application, before collecting the condensing pressure and evaporating pressure of the air-conditioning system, it also includes: if the compressor demand speed is in a preset compressor allowable operating range, then controlling the compressor operation of the air-conditioning system according to the compressor demand speed.

[0059] In some embodiments, when the compressor demand speed under the current operating state of the air-conditioning system is within the corresponding allowable operating range of the compressor, the embodiment of the present application can use the current compressor demand speed as the operating compressor speed, so that the compressor operation of the air-conditioning system can be controlled according to the compressor demand speed, thereby effectively improving the flexibility of the compressor speed adjustment.

[0060] In some embodiments, combined with Figure 3 and Figure 5 As shown, when the compressor demand under the current operating state of the air-conditioning system is in the corresponding compressor allowable operating range, and the current pressure range generated by the condensing pressure and the evaporating pressure is in the S5 zone, the embodiment of the present application can be based on Figure 3 The three distribution areas of the S5 interval determine the compressor speed, thereby controlling the compressor operation of the air-conditioning system, effectively improving the flexibility of compressor speed adjustment.

[0061] Optionally, in one embodiment of the present application, before determining whether the current pressure interval is in the first preset interval, it also includes: determining whether the current pressure interval is in the second preset interval; if the current pressure interval is in the second preset interval, determining that the current refrigerant value of the air-conditioning system is lower than the first preset refrigerant value, and sending a prompt message that the refrigerant is too low to the user's preset terminal.

[0062] For example, Figure 5 As shown, the embodiment of the present application can determine whether the current pressure interval is in the second preset interval, that is, Figure 4 In the S1 zone, if the current pressure interval is in the S1 zone, it is determined that the current refrigerant value of the air-conditioning system is lower than the first refrigerant value, and a prompt message indicating that the refrigerant is too low is sent to the computer of the relevant technician. The relevant technician can promptly analyze the cause of the low refrigerant and increase the refrigerant, which effectively improves the interactivity of the vehicle.

[0063] It should be noted that the first preset refrigerant value is set by those skilled in the art according to actual conditions and is not specifically limited here.

[0064] Optionally, in one embodiment of the present application, before determining whether the current pressure interval is in the first preset interval, it also includes: determining whether the current pressure interval is in a third preset interval; if the current pressure interval is in the third preset interval, determining that the current refrigerant value of the air-conditioning system is higher than the second preset refrigerant value, and sending a prompt message of excessive refrigerant to the preset terminal, wherein the first preset refrigerant value is smaller than the second preset refrigerant value.

[0065] For example, combining Figure 3 and Figure 5 As shown, the embodiment of the present application can determine whether the current pressure interval is in the third preset interval, that is, Figure 3 In the S2 zone, if the current pressure interval is in the S2 zone, it is determined that the current refrigerant value of the air-conditioning system is higher than the second preset refrigerant value, and a prompt message of excessive refrigerant is sent to the computer of the relevant technician. The relevant technician can promptly analyze the cause of excessive refrigerant and reduce the refrigerant in time. Among them, the first refrigerant value is less than the second refrigerant value, which effectively improves the intelligence level of the vehicle.

[0066] It should be noted that the second preset refrigerant value is set by those skilled in the art according to actual conditions and is not specifically limited here.

[0067] Optionally, in one embodiment of the present application, before determining whether the current pressure interval is in the first preset interval, it also includes: determining whether the current pressure interval is in a fourth preset interval; if the current pressure interval is in the fourth preset interval, determining that the compressor is abnormal, controlling the vehicle controller to perform self-inspection, and determining the fault type of the compressor based on the self-inspection results, and sending the fault type to the preset terminal.

[0068] In some embodiments, in combination Figure 3 and Figure 5 As shown, the embodiment of the present application can determine whether the current pressure interval is in the fourth preset interval, that is, Figure 3If the current pressure range is in the S3 zone, the compressor is judged to be abnormal, the vehicle controller is controlled to perform self-inspection, and the fault type of the compressor is determined according to the self-inspection result, and the fault type is sent to the computer of the relevant technician to ensure the safe operation of the system.

[0069] According to the vehicle compressor speed control method proposed in the embodiment of the present application, when the compressor demand speed is not in the compressor allowable speed range, the compressor demand speed can be adjusted according to the pressure range of the condensing pressure and evaporation pressure of the air-conditioning system, so as to avoid compressor overload and overcurrent and improve the stability of the air-conditioning system operation. Thus, the problem that the related art relies on fixed speed settings, resulting in the compressor's response being not flexible enough in complex situations, and the compressor speed needs to be adjusted only after the actual temperature reaches the target temperature, resulting in a slow response speed and reduced user comfort.

[0070] Next, the compressor speed control device for a vehicle proposed in accordance with an embodiment of the present application will be described with reference to the accompanying drawings.

[0071] Figure 6 It is a block diagram of a compressor speed control device for a vehicle according to an embodiment of the present application.

[0072] like Figure 6 As shown, the compressor speed control device 10 of the vehicle includes: an acquisition module 100 , a collection module 200 and a control module 300 .

[0073] Specifically, the acquisition module 100 is used to acquire the required speed of the compressor of the air-conditioning system of the vehicle in the current operating state, and determine whether the required speed of the compressor is within a preset compressor allowable operating range.

[0074] The collection module 200 is used to collect the condensing pressure and the evaporating pressure of the air-conditioning system if the required speed of the compressor is not within the preset allowable operating range of the compressor.

[0075] The control module 300 is used to generate a current pressure interval based on the condensing pressure and the evaporating pressure, and determine whether the current pressure interval is in a first preset interval. If the current pressure interval is in the first preset interval, the required compressor speed is adjusted according to the actual temperature of the vehicle environment until it is in the preset compressor allowable operating range.

[0076] Optionally, in one embodiment of the present application, the control module 300 includes: a judgment unit, a first processing unit and a second processing unit.

[0077] The judging unit is used to judge whether the actual temperature is lower than the preset temperature.

[0078] The first processing unit is used to adjust the fan speed of the air-conditioning system if the actual temperature is lower than the preset temperature, and adjust the required number of revolutions of the compressor according to the fan speed until it is within the preset allowable operating range of the compressor.

[0079] The second processing unit is used to control the air-conditioning system to open the large-diameter valve to release pressure if the actual temperature is greater than or equal to the preset temperature, or the fan speed reaches the maximum speed, until the compressor demand speed is within the preset compressor allowable operating range.

[0080] Optionally, in one embodiment of the present application, the device 10 of the embodiment of the present application further includes: a control module.

[0081] Among them, the control module is used to control the operation of the compressor of the air-conditioning system according to the demand speed of the compressor if the demand speed of the compressor is in the preset allowable operating range of the compressor before collecting the condensing pressure and evaporating pressure of the air-conditioning system.

[0082] Optionally, in one embodiment of the present application, the device 10 of the embodiment of the present application further includes: a first judgment module and a first processing module.

[0083] The first judgment module is used to judge whether the current pressure interval is in the second preset interval before judging whether the current pressure interval is in the first preset interval.

[0084] The first processing module is used to determine whether the current pressure interval is in the first preset interval before determining whether the current pressure interval is in the first preset interval. If the current pressure interval is in the second preset interval, it is determined that the current refrigerant value of the air-conditioning system is lower than the first preset refrigerant value, and a prompt message of insufficient refrigerant is sent to the user's preset terminal.

[0085] Optionally, in one embodiment of the present application, the device 10 of the embodiment of the present application further includes: a second judgment module and a second processing module.

[0086] The second judgment module is used to judge whether the current pressure interval is in the third preset interval before judging whether the current pressure interval is in the first preset interval.

[0087] The second processing module is used to determine whether the current pressure interval is in the first preset interval before judging whether the current pressure interval is in the third preset interval, then determine that the current refrigerant value of the air-conditioning system is higher than the second preset refrigerant value, and send a prompt message of excessive refrigerant to the preset terminal, wherein the first preset refrigerant value is smaller than the second preset refrigerant value.

[0088] Optionally, in one embodiment of the present application, the device 10 of the embodiment of the present application further includes: a third judgment module and a third processing module.

[0089] The third judgment module is used to judge whether the current pressure interval is in the fourth preset interval before judging whether the current pressure interval is in the first preset interval.

[0090] The third processing module is used to determine that the compressor is abnormal if the current pressure interval is in the fourth preset interval before determining whether the current pressure interval is in the first preset interval, control the vehicle controller to perform self-inspection, and determine the fault type of the compressor based on the self-inspection result, so as to send the fault type to the preset terminal.

[0091] It should be noted that the above explanation of the embodiment of the vehicle compressor speed control method is also applicable to the vehicle compressor speed control device of this embodiment, and will not be repeated here.

[0092] According to the compressor speed control device for a vehicle proposed in the embodiment of the present application, when the compressor demand speed is not within the compressor allowable speed range, the compressor demand speed can be adjusted through the pressure range of the condensing pressure and evaporating pressure of the air-conditioning system, thereby avoiding compressor overload and overcurrent and improving the stability of the air-conditioning system operation. Thus, the problem that the related art relies on fixed speed settings, resulting in the compressor's response being not flexible enough under complex circumstances, and the compressor speed needs to be adjusted only after the actual temperature reaches the target temperature, resulting in a slow response speed and reduced user comfort.

[0093] Figure 7 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application. The vehicle may include:

[0094] A memory 701 , a processor 702 , and a computer program stored in the memory 701 and executable on the processor 702 .

[0095] When the processor 702 executes the program, the compressor speed control method for the vehicle provided in the above embodiment is implemented.

[0096] Furthermore, the vehicle also includes:

[0097] The communication interface 703 is used for communication between the memory 701 and the processor 702 .

[0098] The memory 701 is used to store computer programs that can be executed on the processor 702 .

[0099] The memory 701 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0100] If the memory 701, the processor 702 and the communication interface 703 are implemented independently, the communication interface 703, the memory 701 and the processor 702 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 7 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0101] Optionally, in a specific implementation, if the memory 701, the processor 702 and the communication interface 703 are integrated on a chip, the memory 701, the processor 702 and the communication interface 703 can communicate with each other through an internal interface.

[0102] The processor 702 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0103] This embodiment also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the above-mentioned method for controlling the compressor speed of a vehicle is implemented.

[0104] This embodiment also provides a computer program product, including a computer program, which is used to implement the above-mentioned method for controlling the compressor speed of a vehicle when the computer program is executed.

[0105] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0106] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0107] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or N executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0108] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or N wirings (electronic devices), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways as necessary and then storing it in a computer memory.

[0109] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one or a combination of the following technologies known in the art: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0110] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0111] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0112] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for controlling the speed of a compressor of a vehicle, characterized in that: The following steps are involved: Obtaining the required speed of the compressor of the vehicle's air conditioning system in the current operating state, and determining whether the required speed of the compressor is within a preset compressor allowable operating range; If the required speed of the compressor is not within the preset allowable operating range of the compressor, collecting the condensing pressure and the evaporating pressure of the air conditioning system; A current pressure interval is generated based on the condensing pressure and the evaporating pressure, and it is determined whether the current pressure interval is in a first preset interval, wherein if the current pressure interval is in the first preset interval, the required number of revolutions of the compressor is adjusted according to the actual temperature of the environment in which the vehicle is located until it is in the preset compressor allowable operating range.

2. The method according to claim 1, characterized in that The step of adjusting the required number of revolutions of the compressor according to the actual temperature of the environment in which the vehicle is located until the compressor is within the preset allowable operating range of the compressor includes: Determining whether the actual temperature is less than a preset temperature; If the actual temperature is lower than the preset temperature, the fan speed of the air conditioning system is adjusted, and the required number of revolutions of the compressor is adjusted according to the fan speed until the actual temperature is within the preset allowable operating range of the compressor; If the actual temperature is greater than or equal to the preset temperature, or the fan speed reaches the maximum speed, the air conditioning system is controlled to open the large-diameter valve to release pressure until the required compressor speed is within the preset compressor allowable operating range.

3. The method according to claim 1, characterized in that: Before collecting the condensing pressure and the evaporating pressure of the air conditioning system, the method further includes: If the required speed of the compressor is within the preset allowable operating range of the compressor, the operation of the compressor of the air-conditioning system is controlled according to the required speed of the compressor.

4. The method according to claim 1, characterized in that Before determining whether the current pressure interval is within the first preset interval, the method further includes: Determining whether the current pressure interval is within a second preset interval; If the current pressure interval is within the second preset interval, it is determined that the current refrigerant value of the air-conditioning system is lower than the first preset refrigerant value, and a prompt message indicating that the refrigerant is too low is sent to a preset terminal of the user.

5. The method according to claim 4, characterized in that Before determining whether the current pressure interval is within the first preset interval, the method further includes: Determining whether the current pressure interval is within a third preset interval; If the current pressure interval is in the third preset interval, it is determined that the current refrigerant value of the air-conditioning system is higher than the second preset refrigerant value, and a prompt message indicating that the refrigerant is excessive is sent to the preset terminal, wherein the first preset refrigerant value is smaller than the second preset refrigerant value.

6. The method according to claim 4, characterized in that Before determining whether the current pressure interval is within the first preset interval, the method further includes: Determining whether the current pressure interval is within a fourth preset interval; If the current pressure interval is in a fourth preset interval, the compressor is determined to be abnormal, the vehicle controller is controlled to perform a self-check, and the fault type of the compressor is determined according to the self-check result, so as to send the fault type to the preset terminal.

7. A compressor speed control device for a vehicle, characterized in that: include: An acquisition module, used to acquire the required speed of the compressor of the vehicle's air conditioning system in the current operating state, and determine whether the required speed of the compressor is within a preset compressor allowable operating range; A collection module, configured to collect the condensing pressure and the evaporating pressure of the air-conditioning system if the required speed of the compressor is not within the preset allowable operating range of the compressor; A control module is used to generate a current pressure interval based on the condensing pressure and the evaporating pressure, and determine whether the current pressure interval is in a first preset interval, wherein if the current pressure interval is in the first preset interval, the required number of revolutions of the compressor is adjusted according to the actual temperature of the environment in which the vehicle is located until it is in the preset compressor allowable operating range.

8. A vehicle, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the compressor speed control method for a vehicle as described in any one of claims 1 to 5.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the compressor speed control method for a vehicle as described in any one of claims 1-5.

10. A computer program product, comprising a computer program, characterized in that The computer program is executed by a processor to implement the compressor speed control method for a vehicle as described in any one of claims 1-5.

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