Refrigeration control method and device of vehicle, vehicle and storage medium

Abstract

The invention relates to a refrigeration control method and device of a vehicle, the vehicle and a storage medium, and is applied to a refrigeration system of the vehicle. The method comprises the steps that multiple refrigeration parameters of the vehicle in the refrigeration operation process are obtained; based on the refrigeration parameters, the frosting probability and the early warning level of frosting of a heat exchange module in the refrigeration system under the current operation working condition are determined; according to the frosting probability and the early warning level, the current correction coefficient of the compressor is determined; and the current rotating speed of the compressor is corrected according to the correction coefficient, and the vehicle is refrigerated based on the corrected target rotating speed. Therefore, frequent starting and stopping of the compressor can be avoided while the frosting phenomenon of the evaporator is avoided, the service life of hardware is prolonged, the heat exchange efficiency of the evaporator and the passenger compartment is improved, and the perception comfort of the passenger compartment is improved.

Description

Technical Field

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

[0002] At present, when the vehicle is in cooling operation, the vehicle's refrigeration system controls the vehicle's air outlet temperature by adjusting the compressor speed. In the adjustment process, PI (proportional integral) adjustment is mainly performed based on the difference between the current temperature value of the evaporator and the target temperature value, that is, the air outlet temperature value is reduced by reducing the actual temperature value of the evaporator.

[0003] In actual applications, when performing PI adjustment, overshoot or sudden change in operating conditions (from one-way cabin cooling to the passenger compartment and dual cooling of the battery) is generally prone to occur, which can easily cause the evaporator temperature to drop to 0°C, causing the evaporator to frost. The frost layer will increase the thermal resistance of the evaporator, reduce the heat exchange efficiency of the evaporator, and thus reduce the refrigeration efficiency of the refrigeration system.

[0004] In the related art, after the actual temperature of the evaporator drops to 0°C and maintains for 5 seconds, the evaporator is prevented from frosting by controlling the compressor to stop running. This leads to frequent starting and stopping of the compressor to prevent the evaporator from frosting, which not only reduces the service life of the hardware, but also affects the comfort and stability of the passenger compartment and the user experience. Summary of the invention

[0005] The present application provides a vehicle refrigeration control method, device, vehicle and storage medium to solve the technical problem in the prior art that when the vehicle is in refrigeration operation, the evaporator in the refrigeration system is prevented from frosting by frequently starting and stopping the compressor, which reduces the service life of the hardware, affects the comfort and stability of the passenger compartment, and affects the user experience.

[0006] In a first aspect, the present application provides a vehicle refrigeration control method, which is applied to a vehicle refrigeration system, and the method comprises:

[0007] Acquire multiple cooling parameters of the vehicle during cooling operation;

[0008] Based on the refrigeration parameters, determining a frost probability and a warning level of frost on a heat exchange module in the refrigeration system under current operating conditions;

[0009] Determining a current correction factor for the compressor according to the frost probability and the warning level;

[0010] The current rotation speed of the compressor is corrected according to the correction coefficient, and the vehicle is cooled based on the corrected target rotation speed.

[0011] As an optional implementation, the obtaining of multiple refrigeration parameters of the vehicle during refrigeration operation includes:

[0012] Collecting multiple temperature values ​​inside the vehicle within a preset time period;

[0013] Determining a temperature change value of the interior of the vehicle within a preset period according to the plurality of temperature values;

[0014] Collecting the current relative humidity value inside the vehicle, and the actual temperature value and target temperature value of the heat exchange module;

[0015] The temperature change value, the current relative humidity value, the actual temperature value, and the target temperature value are determined as cooling parameters of the vehicle during cooling operation.

[0016] As an optional implementation, determining the frost probability and warning level of frost on the heat exchange module in the refrigeration system under the current operating conditions based on the refrigeration parameters includes:

[0017] Based on the refrigeration parameters, determining the cooling rate and the frosting leakage point temperature value corresponding to the heat exchange module under the current operating conditions;

[0018] Determining the frost probability of the heat exchange module frosting under the current operating conditions according to the refrigeration parameter and the leakage point temperature value;

[0019] The frost probability and warning level of frost on the heat exchange module under the current operating conditions are determined according to the refrigeration parameters, the cooling rate, and the leakage point temperature value.

[0020] As an optional implementation, determining the cooling rate and the frosting leakage point temperature value corresponding to the heat exchange module under the current operating condition based on the refrigeration parameter includes:

[0021] Obtaining a first functional relationship between the preset cooling rate and the temperature change value;

[0022] Calculating the temperature change value and the preset period according to the first functional relationship to obtain the cooling rate;

[0023] Obtaining a second functional relationship between the preset leakage point temperature value and the current relative humidity value;

[0024] The current relative humidity value is calculated according to the second functional relationship to obtain the leakage point temperature value.

[0025] As an optional implementation, determining the frost probability of the heat exchange module frosting under the current operating conditions according to the refrigeration parameter and the leakage point temperature value includes:

[0026] Determining a difference between the target temperature value and the leak point temperature value;

[0027] The difference is used as a keyword to search for a preset frost probability relationship to obtain a target corresponding relationship including the difference; the frost probability relationship includes a corresponding relationship between the difference between the actual temperature value and the leakage point temperature value and the frost probability;

[0028] The frost probability included in the target correspondence is determined as the frost probability of the heat exchange module under the current operating conditions.

[0029] As an optional implementation, determining the warning level of frost of the heat exchange module under the current operating conditions according to the refrigeration parameter, the cooling rate, and the leakage point temperature value includes:

[0030] Determine the target time required for the temperature of the heat exchange module to drop from the actual temperature value to the leakage point temperature value according to the actual temperature value, the leakage point temperature value, and the cooling rate;

[0031] The warning level of the heat exchange module under the current operating condition is determined according to the target time.

[0032] As an optional implementation, determining the warning level of the heat exchange module under the current operating condition according to the target time includes:

[0033] Using the target time as a keyword, searching a preset warning level table to obtain a target correspondence relationship including the target time; the warning level table includes a correspondence relationship between time and warning level;

[0034] The warning level included in the target corresponding relationship is determined as the warning level of the heat exchange module under the current operating condition.

[0035] As an optional implementation, determining the current correction coefficient for the compressor according to the frost probability and the warning level includes:

[0036] Using the frost probability as a keyword, searching a preset correction coefficient table to obtain a first correspondence between a plurality of warning levels corresponding to the frost probability and the correction coefficient; the correction coefficient table includes a correspondence between the frost probability, the warning level, and the correction coefficient;

[0037] According to the warning level, determining a target corresponding relationship including the warning level from a plurality of the first corresponding relationships;

[0038] The correction coefficient included in the target correspondence is determined as the current correction coefficient for the compressor.

[0039] As an optional implementation, the correcting the current rotation speed of the compressor according to the correction coefficient, and cooling the vehicle based on the corrected target rotation speed, includes:

[0040] determining a current rotation speed of the compressor;

[0041] Multiplying the rotation speed by the correction coefficient to obtain a target rotation speed;

[0042] The compressor is controlled according to the target speed to cool the vehicle.

[0043] In a second aspect, the present application provides a vehicle refrigeration control device, which is applied to a vehicle refrigeration system, and the device includes:

[0044] An acquisition module, used for acquiring a plurality of refrigeration parameters of the vehicle during refrigeration operation;

[0045] A first determination module is used to determine the frost probability and warning level of the heat exchange module in the refrigeration system under the current operating conditions based on the refrigeration parameters;

[0046] A second determination module is used to determine a current correction coefficient for the compressor according to the frost probability and the warning level;

[0047] The correction module is used to correct the current rotation speed of the compressor according to the correction coefficient, and cool the vehicle based on the corrected target rotation speed.

[0048] In a third aspect, the present application provides a vehicle, comprising: a refrigeration system, the refrigeration system comprising a processor and a memory, the processor being used to execute a refrigeration control program of the vehicle stored in the memory to implement the refrigeration control method of the vehicle described in any one of the first aspects.

[0049] In a fourth aspect, the present application provides a storage medium, characterized in that the storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the vehicle refrigeration control method described in any one of the first aspects.

[0050] The technical solution provided by the embodiment of the present application determines the frost probability and warning level of the heat exchange module in the refrigeration system under the current operating conditions by acquiring multiple refrigeration parameters of the vehicle during the refrigeration operation, and determines the current correction coefficient for the compressor according to the frost probability and warning level, and corrects the current speed of the compressor according to the correction coefficient, and refrigerates the vehicle based on the corrected target speed. This technical solution determines the frost probability and warning level of the heat exchange module in the refrigeration system by acquiring multiple refrigeration parameters during the refrigeration operation of the vehicle before the heat exchange module frosts, and determines the correction coefficient for correcting the speed of the compressor according to the frost probability and warning level, thereby correcting the speed of the compressor according to the correction coefficient, so as to adjust the speed of the compressor in time before the heat exchange module frosts, so that the heat exchange module cannot frost, thereby avoiding the frost phenomenon of the evaporator and avoiding the frequent start and stop phenomenon of the compressor, thereby improving the service life of the hardware, improving the heat exchange efficiency between the evaporator and the passenger compartment, and improving the perceived comfort of the passenger compartment. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0052] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art texts are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0053] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0054] Figure 1 A schematic diagram of the structure of a vehicle refrigeration system provided in an embodiment of the present application;

[0055] Figure 2 A flow chart of an embodiment of a vehicle cooling control method provided in an embodiment of the present application;

[0056] Figure 3 A flow chart of another embodiment of a vehicle cooling control method provided in an embodiment of the present application;

[0057] Figure 4 A flow chart of another embodiment of a vehicle cooling control method provided in an embodiment of the present application;

[0058] Figure 5 A block diagram of an embodiment of a vehicle refrigeration control device provided in an embodiment of the present application;

[0059] Figure 6 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described in the text are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0061] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described in detail below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0062] In order to solve the technical problem in the prior art that during the vehicle refrigeration operation, the evaporator in the refrigeration system is prevented from frosting by frequently starting and stopping the compressor, which reduces the hardware service life, affects the comfort and stability of the passenger compartment, and affects the user experience, the present application provides a vehicle refrigeration control method, device, vehicle and storage medium, which can determine the frost probability and warning level of the heat exchange module in the refrigeration system by collecting multiple refrigeration parameters before the heat exchange module frosts during the vehicle refrigeration operation, and determine a correction coefficient for correcting the compressor speed according to the frost probability and the warning level, so as to correct the compressor speed according to the correction coefficient, so as to adjust the compressor speed in time before the heat exchange module frosts, so that the heat exchange module cannot frost, thereby avoiding the evaporator frosting phenomenon and avoiding the frequent start and stop phenomenon of the compressor, thereby improving the hardware service life, improving the heat exchange efficiency between the evaporator and the passenger compartment, and improving the perceived comfort of the passenger compartment.

[0063] To facilitate understanding of the vehicle refrigeration control method provided in the embodiment of the present application, the refrigeration system of the vehicle involved in the vehicle refrigeration control method provided in the present application is first exemplarily described below.

[0064] join Figure 1 , is a schematic diagram of the structure of a vehicle refrigeration system provided in an embodiment of the present application. Figure 1 As shown, the refrigeration system 10 may include an evaporator 11 , a compressor 12 , a condenser 13 , a liquid storage and drying bottle 14 , and an expansion valve 15 .

[0065] Among them, the above-mentioned evaporator 11 is a heat exchange component in the refrigeration system 10, which is used to absorb the hot air in the car through the refrigerant, thereby obtaining low-temperature steam corresponding to the refrigerant. The embodiment of the present application does not limit the size and type of the evaporator 11.

[0066] The compressor 12 is a power component in the refrigeration system 10, which is used to absorb the low-temperature steam output by the evaporator and compress it into superheated steam. The embodiment of the present application does not limit the type of the compressor 12.

[0067] The condenser 13 is used to release heat from the input superheated steam to the outside, thereby condensing the superheated steam into a supercooled liquid. The embodiment of the present application does not limit the type and size of the condenser 13.

[0068] The liquid storage-drying bottle 14 is used to store dry refrigerant. The embodiment of the present application does not limit the type and size of the liquid storage-drying bottle.

[0069] The expansion valve 15 is used to control the flow rate of the refrigerant flowing to the evaporator 11. By controlling the flow rate of the refrigerant, the temperature value inside the vehicle can also be controlled.

[0070] In one embodiment, during the operation of the refrigeration system 10, the refrigerant stored in the liquid storage and drying bottle 14 can enter the evaporator 11 through the expansion valve 15. In the evaporator 11, the low-temperature and low-pressure liquid refrigerant absorbs the heat of the air inside the vehicle passing through the evaporator 11 and evaporates to become low-temperature steam. The low-temperature steam is absorbed and compressed into superheated steam by the compressor 12, and then flows into the condenser 13. In the condenser 13, the refrigerant of the superheated steam transfers heat to the air outside the vehicle passing through the condenser 13 and liquefies to become liquid refrigerant. The liquid refrigerant flows back into the liquid storage and drying bottle 14 and enters the next cycle.

[0071] At present, when the vehicle is in cooling operation, the vehicle's refrigeration system controls the vehicle's air outlet temperature by adjusting the compressor speed. In the adjustment process, PI adjustment is mainly performed based on the difference between the current temperature value of the evaporator and the target temperature value, that is, the air outlet temperature value is reduced by reducing the actual temperature value of the evaporator.

[0072] In actual applications, when performing PI adjustment, overshoot or sudden change in operating conditions (from one-way cabin cooling to the passenger compartment and dual cooling of the battery) is generally prone to occur, which can easily cause the evaporator temperature to drop to 0°C, causing the evaporator to frost. The frost layer will increase the thermal resistance of the evaporator, reduce the heat exchange efficiency of the evaporator, and thus reduce the refrigeration efficiency of the refrigeration system.

[0073] In the related art, after the actual temperature of the evaporator drops to 0°C and maintains for 5 seconds, the evaporator is prevented from frosting by controlling the compressor to stop running. This leads to frequent starting and stopping of the compressor to prevent the evaporator from frosting, which not only reduces the service life of the hardware, but also affects the comfort and stability of the passenger compartment and the user experience.

[0074] In this regard, the present application provides a vehicle refrigeration control method, which can avoid frosting of the evaporator while avoiding frequent starting and stopping of the compressor, thereby increasing the service life of the hardware, improving the heat exchange efficiency between the evaporator and the passenger compartment, and improving the perceived comfort of the passenger compartment.

[0075] The vehicle cooling control method provided by the present application is further explained below with reference to specific embodiments in conjunction with the accompanying drawings. The embodiments do not constitute a limitation on the embodiments of the present application.

[0076] join Figure 2 , is a flow chart of an embodiment of a vehicle cooling control method provided in an embodiment of the present application. As an embodiment, Figure 2 The process shown can be applied to the refrigeration system of a vehicle, e.g. Figure 1 The refrigeration system shown in Figure 1 is Figure 2 As shown, the process may include the following steps:

[0077] Step 201: Acquire multiple cooling parameters of the vehicle during cooling operation.

[0078] Step 202: Based on the above refrigeration parameters, determine the frost probability and warning level of the heat exchange module in the refrigeration system under the current operating conditions.

[0079] The following is a unified description of step 201 and step 202:

[0080] The above-mentioned cooling parameters refer to the parameters involved in the cooling operation of the vehicle, which may include but are not limited to: the temperature value inside the vehicle, the humidity inside the vehicle, the target temperature value of the heat exchange module, etc.

[0081] The above-mentioned heat exchange module refers to a module for cooling the vehicle, for example Figure 1 The evaporator 11 of the refrigeration system 10 is shown in FIG.

[0082] The above-mentioned frost probability refers to the probability of frost occurring under current operating conditions when the heat exchange module is cooling the interior of the vehicle.

[0083] The above-mentioned warning level represents the danger level of frosting events occurring in the heat exchange module under the current operating conditions. It can be expressed by the time when frosting occurs under the current operating conditions. The shorter the time, the higher the warning level. It can also be expressed in other ways, and the embodiments of the present application are not limited to this.

[0084] In some embodiments of the present application, during the refrigeration operation of the vehicle, in order to prevent the heat exchange module from overshooting when adjusting the air outlet temperature in the vehicle, resulting in excessively low temperature and thus frosting, the executing entity of the embodiments of the present application can obtain multiple refrigeration parameters of the vehicle during the refrigeration operation, and based on the above refrigeration parameters, determine the frost probability and warning level of the heat exchange module in the refrigeration system under the current operating conditions.

[0085] As an optional implementation method, the execution subject of the embodiment of the present application can read the current vehicle data and extract multiple refrigeration parameters of the vehicle during the refrigeration operation process from the vehicle data.

[0086] As for how to determine the frost probability and warning level of the heat exchange module in the refrigeration system under the current operating conditions based on the refrigeration parameters, it can be seen in the following Figure 3 The process shown is explained and will not be described in detail here.

[0087] Step 203: Determine the current correction coefficient for the compressor according to the above frost probability and warning level.

[0088] Step 204: Correct the current rotation speed of the compressor according to the correction coefficient, and cool the vehicle based on the corrected target rotation speed.

[0089] The following is a unified description of step 203 and step 204:

[0090] The compressor mentioned above refers to a power component that absorbs the refrigerant vapor output by the heat exchange module, such as Figure 1 A compressor 12 of a refrigeration system 10 is shown.

[0091] The correction coefficient is a coefficient used to correct the rotation speed of the compressor, for example, to correct the rotation speed of the compressor.

[0092] The above speed refers to the number of circles the compressor rotates around the center of a circle per unit time when it is currently running.

[0093] The above-mentioned target speed refers to the speed after the speed of the compressor is corrected according to the correction coefficient.

[0094] In some embodiments of the present application, after determining the frost probability and warning level of possible frost on the heat exchange module under the current refrigeration operating conditions of the vehicle, the current correction coefficient for the compressor can be determined based on the frost probability and warning level, so that the current speed of the compressor can be corrected based on the correction coefficient to avoid the temperature of the heat exchange module reaching the leakage point temperature of frost, thereby causing a frosting event and reducing the heat exchange efficiency.

[0095] Afterwards, the operation of the compressor in the vehicle's refrigeration system is controlled according to the corrected target speed. Since the speed of the compressor is corrected by the correction coefficient, controlling the operation of the compressor according to the corrected target speed can avoid frosting of the heat exchange module.

[0096] As for how to determine the current correction coefficient for the compressor based on the frost probability and the warning level, and how to correct the current speed of the compressor based on the correction coefficient, it can be explained below and will not be described in detail here.

[0097] The technical solution provided by the embodiment of the present application determines the frost probability and warning level of the heat exchange module in the refrigeration system under the current operating conditions by acquiring multiple refrigeration parameters of the vehicle during the refrigeration operation, and determines the current correction coefficient for the compressor according to the frost probability and warning level, and corrects the current speed of the compressor according to the correction coefficient, and refrigerates the vehicle based on the corrected target speed. This technical solution determines the frost probability and warning level of the heat exchange module in the refrigeration system by acquiring multiple refrigeration parameters during the refrigeration operation of the vehicle before the heat exchange module frosts, and determines the correction coefficient for correcting the speed of the compressor according to the frost probability and warning level, thereby correcting the speed of the compressor according to the correction coefficient, so as to adjust the speed of the compressor in time before the heat exchange module frosts, so that the heat exchange module cannot frost, thereby avoiding the frost phenomenon of the evaporator and avoiding the frequent start and stop phenomenon of the compressor, thereby improving the service life of the hardware, improving the heat exchange efficiency between the evaporator and the passenger compartment, and improving the perceived comfort of the passenger compartment.

[0098] See also Figure 3 , which is a flow chart of an embodiment of another vehicle refrigeration control method provided in an embodiment of the present application. Figure 3 The process shown in Figure 2 Based on the process shown, it describes how to obtain multiple refrigeration parameters of the vehicle during refrigeration operation, and how to determine the frost probability and warning level of the heat exchange module under the current operating conditions based on the refrigeration parameters. Figure 3 As shown, the process may include the following steps:

[0099] Step 301: Collect multiple temperature values ​​inside the vehicle within a preset time period.

[0100] Step 302: Determine the temperature change value inside the vehicle within a preset period based on the above multiple temperature values.

[0101] Step 303: Collect the current relative humidity value inside the vehicle, as well as the actual temperature value and target temperature value of the heat exchange module.

[0102] Step 304: determine the temperature change value, current relative humidity value, actual temperature value, and target temperature value as cooling parameters of the vehicle during cooling operation.

[0103] The following is a unified description of steps 301 to 304:

[0104] The above-mentioned preset time period may be a pre-set time period.

[0105] The above-mentioned preset period refers to a preset period for collecting changes in the temperature inside the vehicle, which may be a period of time less than or equal to the above-mentioned preset time period, for example, 1 minute.

[0106] The above temperature value refers to the temperature value inside the vehicle corresponding to the collection time point, which may be the temperature value of the passenger compartment in the vehicle.

[0107] The above-mentioned current relative humidity value refers to the humidity value inside the vehicle corresponding to the current time, which may be the humidity value of the passenger compartment in the vehicle.

[0108] The above actual temperature value refers to the current actual temperature value of the heat exchange module.

[0109] The above target temperature value refers to the temperature value that the heat exchange module needs to reach.

[0110] In some embodiments of the present application, multiple temperature values ​​of the interior of the vehicle within a preset time period can be collected, so as to determine the temperature change value of the interior of the vehicle within a preset period based on the multiple temperature values. For example, the preset time period can be 1.5 minutes, which can be 1.5 minutes from now to the next time, or 1.5 minutes from now to the previous time, and the preset period can be 1 minute. Then, the temperature change value of the interior temperature within 1 minute can be determined by collecting multiple temperature values ​​within 1.5 minutes.

[0111] As an optional implementation, a temperature sensor inside the vehicle may be used to collect multiple temperature values ​​inside the vehicle within a preset time period.

[0112] In one embodiment, the execution entity of the embodiment of the present application can also obtain the current relative humidity value inside the vehicle, as well as the actual temperature value and target temperature value of the heat exchange module.

[0113] As an optional implementation, the current relative humidity value inside the vehicle may be collected by a humidity sensor inside the vehicle.

[0114] As an optional implementation method, the actual temperature value of the heat exchange module can be obtained through a temperature sensor pre-installed in the heat exchange module, and the target temperature value of the heat exchange module can be read from the vehicle data.

[0115] Based on this, the executing entity of the embodiment of the present application may determine the above-mentioned temperature change value, the above-mentioned current relative humidity value, the above-mentioned actual temperature value, and the above-mentioned target temperature value as the refrigeration parameters of the vehicle during the refrigeration operation process.

[0116] Step 305: Based on the above refrigeration parameters, determine the cooling rate and frosting leakage point temperature value corresponding to the heat exchange module under the current operating conditions.

[0117] The above-mentioned cooling rate refers to the temperature drop rate in the heat exchange module.

[0118] The above leakage point temperature value refers to the temperature value when the heat exchange module reaches frost.

[0119] In some embodiments of the present application, the executing entity of the embodiments of the present application can determine the cooling rate of the heat exchange module under the current working conditions and the leakage point temperature value when frosting occurs during the cooling process of the vehicle based on the above-mentioned cooling parameters.

[0120] As an optional implementation method, a first functional relationship between the preset cooling rate and the temperature change value can be obtained, and based on the first functional relationship, the temperature change value and the preset period (that is, the preset period corresponding to the temperature change value mentioned above) are calculated to obtain the cooling rate.

[0121] As an exemplary implementation, the volume of the passenger compartment of the vehicle may be obtained, and the specific heat capacity of the heat exchange module may be determined according to the material of the heat exchange module, and the mass of the heat exchange module may be determined. Then, the temperature change value and the preset period may be calculated by the first functional relationship shown in the following formula (1) to obtain the above-mentioned cooling rate:

[0122]

[0123] The above V refers to the volume of the passenger compartment in the vehicle, which can be determined according to the vehicle model (for example, it can be 1500L). m Refers to the volume per mole, which can be 22.4L / mol. v It can be the molar constant volume heat capacity, which can be 20.7438, the above ΔT is the temperature change value, the above m refers to the mass of the heat exchange module, which is generally 3 to 5 kg, and the above C p is the specific heat capacity, which can be determined according to the material of the heat exchange module. For example, if the material of the general heat exchange module is aluminum, then the value of the specific heat capacity can be 880 of the specific heat capacity of aluminum.t is the above-mentioned preset period.

[0124] As an implementation method, by substituting the fixed values ​​of the parameters in the above formula (I), for example, the volume of the passenger compartment is 1500L, the mass of the heat exchange module is 4kg, and the specific heat capacity is 880, then the first functional relationship shown in the following formula (II) can be obtained:

[0125]

[0126] Among them, the above ΔT is the temperature change value, and the above T t is the above-mentioned preset period.

[0127] As an exemplary embodiment, the above formula (1) can be converted as follows:

[0128] First, after turning on the vehicle's air conditioner, the most intuitive manifestation of the change in the air volume gear is the change in the blower air flow rate in the refrigeration system. The change in the air flow rate is directly reflected by the change in its convective heat transfer coefficient, and the Newton cooling formula shown in the following formula (III) can be obtained:

[0129] q=h·A(T s -T f ) Formula (III)

[0130] Wherein, q is the heat exchange per unit time, in watts, h is the convective heat transfer coefficient of the heat exchange module, A is the heat exchange area of ​​the heat exchange module, and T s is the solid surface temperature of the heat exchange module, which can be expressed as the current actual temperature value of the heat exchange module. f is the fluid temperature, which can be expressed as the air outlet temperature of the vehicle and can be directly measured by a temperature sensor.

[0131] Then, based on the ideal gas state, the temperature change in the car is considered. At the same time, considering that the circulation mode is in the internal circulation when the air conditioner is turned on in the car, that is, at this time, the change in the temperature in the car can be approximately regarded as an isochoric change. At this point, the change in the temperature in the car can be regarded as an isochoric change process without any work on the outside world. At this time, the change in the internal energy of the car can be expressed by the change in the temperature in the car, where the internal energy of the car is expressed as shown in the following formula (IV):

[0132] U=n·C v ·T-style (IV)

[0133] Wherein, U is the internal energy of the gas in the passenger compartment of the vehicle, n is the number of moles, which can be the volume V of the passenger compartment in the vehicle, and the volume v corresponding to each mole m The ratio of the above C v It can be the molar heat capacity at constant volume, and the above T refers to the current temperature value inside the vehicle.

[0134] The above formula (IV) can be used to obtain the formula for the change of the internal energy in the vehicle as shown in the following formula (V):

[0135]

[0136] Among them, the above ΔU is the change in the internal energy of the car, n is the number of moles, T n is the temperature inside the car in the current cycle, T n-1 is the temperature inside the car in the previous week. v It can be the molar heat capacity at constant volume, the above V refers to the volume of the passenger compartment in the vehicle, which can be determined according to the model of the vehicle (for example, it can be 1500L), and the above V m It refers to the volume per mole, which can be 22.4L / mol. The above ΔT is the temperature change value in the car.

[0137] As an example, the above V and the above V m , and the above C v The value in (the above V is 1500L, the above V m is 22.4, the above C v =20.7438) can be substituted into the following formula (VI) to obtain the corresponding relationship between the vehicle interior energy and the vehicle interior temperature change value:

[0138]

[0139] The above ΔU is the change in internal energy in the vehicle, and the above ΔT is the temperature change value in the vehicle.

[0140] Then, the change in the internal energy of the passenger compartment within a preset period (e.g., 60 seconds) can be associated with the change in air flow rate (air volume level) to obtain the convective heat transfer coefficient under the current working condition. The change in the internal energy of the passenger compartment within the preset period can be shown in the following formula (VII):

[0141] ΔU=q·T t Formula (VII)

[0142] Among them, the above q is the above heat exchange per unit time, and the above T t is the above-mentioned preset period.

[0143] Based on this, after combining the above formula (5) with formula (7), the expression of the convective heat transfer coefficient shown in the following formula (8) can be obtained:

[0144]

[0145] Wherein, h is the convective heat transfer coefficient, C v It can be the molar heat capacity at constant volume, the above V refers to the volume of the passenger compartment in the vehicle, which can be determined according to the model of the vehicle (for example, it can be 1500L), and the above Vm Refers to the volume per mole, which can be 22.4L / mol, the above ΔT is the temperature change value in the car, the above A is the heat exchange area of ​​the heat exchange module, and the above T s is the solid surface temperature of the heat exchange module, which can be expressed as the current actual temperature value of the heat exchange module. f is the fluid temperature, which can be expressed as the vehicle's air outlet temperature and can be directly measured by a temperature sensor. t is the above-mentioned preset period.

[0146] Optionally, the above formula (six) and formula (seven) can be processed together to obtain the convective heat transfer coefficient expression shown in the following formula (nine):

[0147]

[0148] Wherein, the above ΔT is the temperature change value in the car, the above A is the heat exchange area of ​​the heat exchange module, and the above T s is the solid surface temperature of the heat exchange module, which can be expressed as the current actual temperature value of the heat exchange module. f is the fluid temperature, which can be expressed as the vehicle's air outlet temperature and can be directly measured by a temperature sensor. t is the above-mentioned preset period.

[0149] Finally, there may be a corresponding relationship between the above convective heat transfer coefficient and the actual frosting temperature at different temperatures (collected by the in-vehicle temperature sensor), different humidities (collected by the in-vehicle humidity sensor), and different air volume levels as shown in the following formula (10):

[0150]

[0151] Among them, the above T y is the actual frosting temperature of the actual heat exchange module, the above t refers to the time required from the frosting of the heat exchange module to the temperature reaching the leakage point temperature, the above h is the convection heat transfer coefficient, the above m refers to the mass of the heat exchange module, which is generally 3 to 5 kg, and the above C p is the specific heat capacity, which can be determined according to the material of the heat exchange module. For example, if the material of the general heat exchange module is aluminum, then the value of the specific heat capacity can be 880 of the specific heat capacity of aluminum. s is the solid surface temperature of the heat exchange module, which can be expressed as the current actual temperature value of the heat exchange module. f is the fluid temperature, which can be expressed as the air outlet temperature of the vehicle and can be directly measured by a temperature sensor.

[0152] Optionally, after substituting the above formula (8) into formula (10), the first functional relationship shown in the above formula (1) can be obtained.

[0153] Optionally, after substituting the above formula (9) into the formula (10), the first functional relationship shown in the above formula (2) can be obtained.

[0154] At this point, the first functional relationship between the cooling rate and the temperature change value can be obtained. It can be understood that the parameters in the above formula (1) except the temperature change value and the preset period can be pre-acquired and determined as the above formula (2) by the execution subject of the embodiment of the present application, or can be pre-acquired by the execution subject of the embodiment of the present application and stored in a preset storage medium, so that after determining the first functional relationship of the above formula (1), the values ​​of the above parameters are obtained from the above storage medium, and then the values ​​of the above parameters, the temperature change value and the preset period are substituted into the above formula (1) to obtain the above cooling rate.

[0155] As an optional implementation method, when determining the leakage point temperature value of the heat exchange module, a second functional relationship between the preset leakage point temperature value and the current relative humidity value can be obtained, and the current relative humidity value is calculated based on the above second functional relationship to obtain the above leakage point temperature value.

[0156] As an exemplary implementation, the second functional relationship may be shown as the following formula (XI):

[0157]

[0158] Among them, the above T d is the leakage point temperature value, the above R H is the current relative humidity value inside the vehicle, and the above a, b, and c are preset water vapor parameters.

[0159] Optionally, the values ​​of a, b, and c may be 17.67, 243.5, and 243.5, respectively. Then, after substituting a, b, and c into the above formula (XI), the following formula (XII) may be obtained:

[0160]

[0161] Based on this, the second functional relationship shown in the above formula (XII) can be obtained, and the corresponding leakage point temperature value can be obtained by inputting the above current relative humidity value into the above second functional relationship.

[0162] Step 306: Determine the probability of frosting of the heat exchange module under the current operating conditions according to the above refrigeration parameters and the leakage point temperature value.

[0163] The above-mentioned cooling parameters refer to the temperature change value inside the vehicle, the current relative humidity value, the actual temperature value and the target temperature value of the heat exchange module and other relevant parameters during the vehicle cooling operation.

[0164] The above-mentioned frost probability refers to the probability of frost occurring under current operating conditions when the heat exchange module is cooling the interior of the vehicle.

[0165] In some embodiments of the present application, the execution subject of the embodiments of the present application can determine the probability of frosting of the heat exchange module under the current operating conditions based on the above-determined refrigeration parameters and leakage point temperature values.

[0166] As an optional implementation, the refrigeration parameter may include a target temperature value of the heat exchange module, and the target temperature value refers to the temperature value reached after the heat exchange module is cooled down. Based on this, the execution subject of the embodiment of the present application may determine the probability of frost formation of the heat exchange module under the current operating conditions according to the target temperature value and the determined leakage point temperature value.

[0167] As an exemplary implementation, the execution subject of the embodiment of the present application may determine the difference between the target temperature value and the leakage point temperature value, that is, the target temperature value may be subtracted from the leakage point temperature value to obtain the difference.

[0168] Afterwards, the preset frost probability table can be searched according to the above difference to obtain the frost probability of the heat exchange module frosting under the current operating condition corresponding to the difference. The above frost probability table is a predetermined table for determining the frost probability of the heat exchange module frosting in the refrigeration system of the vehicle, which may include the corresponding relationship between the difference between the target temperature value and the leak point temperature value and the frost probability of the heat exchange module frosting in the refrigeration system.

[0169] As an implementation method, the above difference can be used as a keyword to search the preset frost probability table to obtain a target correspondence relationship containing the difference, and the frost probability contained in the above target correspondence relationship is determined as the frost probability of the heat exchange module under the current operating conditions.

[0170] For example, the above frost probability table can be shown as follows:

[0171] Table 1

[0172] Difference 4℃ 2℃ 1.5℃ 1℃ 0.5℃ Frost probability 0％ 20％ 45％ 75％ 100％

[0173] Assuming that the difference is 2°C, the frost probability of the heat exchange module is 20% by looking up Table 1. Assuming that the difference is not the difference in the table (e.g., 1.8°C), the target difference range (1.5°C to 2°C) to which the difference belongs can be determined through the table, and the frost probability (20% and 45%) corresponding to the difference range is calculated in advance to determine the frost probability corresponding to the difference. The preset calculation may include, but is not limited to, average calculation, weighted average calculation, etc.

[0174] Optionally, assuming that the above difference is not the difference in the table (for example, 1.8°C), the target difference (2°C) closest to the difference can be determined through the table, and the frost probability corresponding to the target difference can be determined as the frost probability corresponding to the difference (1.8°C).

[0175] Step 307: Determine the frost warning level of the heat exchange module under the current operating conditions according to the refrigeration parameters, the cooling rate, and the leakage point temperature value.

[0176] The above-mentioned cooling parameters refer to the temperature change value inside the vehicle, the current relative humidity value, the actual temperature value and the target temperature value of the heat exchange module and other relevant parameters during the vehicle cooling operation.

[0177] The above-mentioned warning level represents the danger level of frosting events occurring in the heat exchange module under the current operating conditions. It can be expressed by the time when frosting occurs under the current operating conditions. The shorter the time, the higher the warning level. It can also be expressed in other ways, and the embodiments of the present application are not limited to this.

[0178] In some embodiments of the present application, the execution subject of the embodiments of the present application can determine the warning level of frost of the heat exchange module under the current operating conditions according to the above-mentioned refrigeration parameters, cooling rate, and leakage point temperature value.

[0179] As an optional implementation method, the target time required for the temperature of the heat exchange module to drop from the actual temperature value to the leakage point temperature value can be determined based on the actual temperature value of the heat exchange module, the leakage point temperature value, and the above-mentioned cooling rate, and the warning level of the heat exchange module under the current operating conditions can be determined based on the target time.

[0180] As an exemplary embodiment, a third functional relationship between the preset actual temperature value, leakage point temperature value, cooling rate, and the target time required for the temperature of the heat exchange module to cool from the actual temperature value to the leakage point temperature value can be obtained.

[0181] Afterwards, the third functional relationship can be used to calculate the actual temperature value, the leakage point temperature value, and the cooling rate to obtain the target time required for the temperature of the heat exchange module to cool from the actual temperature value to the leakage point temperature value.

[0182] As an implementation method, the target time can be determined by the third functional relationship shown in the following formula (thirteen):

[0183]

[0184] Among them, the above t is the above target time, the above T act is the actual temperature value, the above T d is the leakage point temperature value, and K is the cooling rate.

[0185] Based on the target time determined above, the executing entity of the embodiment of the present application can determine the warning level of the heat exchange module under the current operating condition according to the target time.

[0186] As an optional implementation method, a preset warning level table can be searched according to the target time to determine the warning level of the heat exchange module under the current operating conditions. The above warning level table is a pre-set table containing the corresponding relationship between the above target time and the warning level.

[0187] As an exemplary implementation, the target time may be used as a keyword to search the preset warning level table to obtain a target correspondence relationship including the target time, and the frost probability included in the target correspondence relationship may be determined as the warning level of the heat exchange module under the current operating conditions.

[0188] For example, the above warning level table can be shown in Table 2 below:

[0189] Table 2

[0190]

[0191] Based on the above table, we continue to assume that the target time is 3 minutes, then the corresponding frost warning level at this time can be L1 level. Assuming that the target time is not the time in the table (for example, 2 minutes), the target level time corresponding to the frost warning level closest to the target time can be determined (1 minute or 3 minutes), and the warning level corresponding to the target level time can be determined as the warning level corresponding to the target time (L1 level or L2 level, among which the higher level warning level, that is, L2 level, can be preferentially selected).

[0192] The technical solution provided by the embodiment of the present application collects multiple temperature values ​​inside the vehicle within a preset time period, determines the temperature change value inside the vehicle within a preset period based on the above multiple temperature values, collects the current relative humidity value inside the vehicle, and the actual temperature value and target temperature value of the heat exchange module, and determines the above temperature change value, current relative humidity value, actual temperature value, and target temperature value as refrigeration parameters of the vehicle during refrigeration operation, and determines the corresponding cooling rate and frosting leakage point temperature value of the heat exchange module under the current operating conditions based on the above refrigeration parameters, determines the frosting probability of the heat exchange module under the current operating conditions based on the refrigeration parameters and the leakage point temperature value, and determines the frosting warning level of the heat exchange module under the current operating conditions based on the above refrigeration parameters, the above cooling rate, and the above leakage point temperature value. This technical solution determines the cooling rate and leakage temperature value of the heat exchange module by collecting the temperature change value and current relative humidity value inside the vehicle within a preset period, as well as the actual temperature value and target temperature value corresponding to the heat exchange module. Therefore, the frost probability and warning level of the heat exchange module during the operation of the vehicle are determined based on the above-mentioned cooling rate, leakage temperature value and target temperature value of the heat exchange module. The above-mentioned refrigeration parameters can be collected using the vehicle's existing collection device, which makes it possible to efficiently and accurately determine the frost probability and warning level of the heat exchange module in the vehicle's refrigeration system during the vehicle's refrigeration process, thereby avoiding the frosting of the heat exchange module.

[0193] See also Figure 4 , which is a flow chart of an embodiment of another vehicle refrigeration control method provided in an embodiment of the present application. Figure 4 The process shown in Figure 3 Based on the process shown in the figure, it describes how to determine the current correction factor for the compressor according to the frost probability and the warning level, and correct the current speed of the compressor according to the correction factor. Figure 4 As shown, the process may include the following steps:

[0194] Step 401: using the above-mentioned frost probability as a keyword, searching a preset correction coefficient table to obtain a first correspondence between multiple warning levels corresponding to the frost probability and the correction coefficient. The above-mentioned correction coefficient table may include a correspondence between the frost probability, the warning level, and the correction coefficient.

[0195] Step 402: According to the above warning relationship, determine a target corresponding relationship including a warning level from a plurality of first corresponding relationships.

[0196] Step 403: determine the correction coefficient included in the above target correspondence as the current correction coefficient for the compressor.

[0197] The following is a unified description of steps 401 to 403:

[0198] The above-mentioned correction coefficient table refers to a pre-set table for correction coefficients, which may include the corresponding relationship between frost probability, warning level, and correction coefficient.

[0199] In some embodiments of the present application, the correspondence between the frost probability, the warning level, and the correction coefficient of the heat exchange module can be predetermined, and the above correspondence can be included in a preset correction coefficient table. Based on this, the execution subject of the embodiment of the present application can search the above correction coefficient table through the above frost probability and warning level to obtain the correction coefficient of the current corresponding compressor.

[0200] As an optional implementation method, the above-mentioned frost probability can be used as a keyword to search the above-mentioned preset correction coefficient table to obtain a first corresponding relationship between multiple warning levels corresponding to the frost probability and the correction coefficient.

[0201] Afterwards, according to the warning level, a target correspondence relationship including the above warning level can be determined from multiple first correspondence relationships, and the above target correspondence relationship can include a correction coefficient. Therefore, the correction coefficient included in the above target correspondence relationship can be determined as the current correction coefficient for the compressor.

[0202] For example, assuming that the above correction coefficient table can be shown as the following Table 3:

[0203] Table 3

[0204]

[0205] Assuming that the above frost probability is 20%, then by looking up the above correction coefficient table, the following first correspondence can be obtained: L1-1, L2-0.95, L3-0.9. Continuing to assume that the above warning level is L2, the target correspondence can be determined from the above first correspondence as L2-0.95. Then the correction coefficient 0.95 included in the target correspondence can be determined as the current correction coefficient for the compressor.

[0206] As another optional implementation, the above-mentioned warning level may be used as a keyword to search the above-mentioned preset correction coefficient table to obtain a second corresponding relationship between a plurality of frost probabilities corresponding to the warning level and the correction coefficient.

[0207] Afterwards, a target correspondence relationship including the frosting probability can be determined from multiple second correspondence relationships based on the frosting probability, and the target correspondence relationship can include a correction coefficient. Therefore, the correction coefficient included in the target correspondence relationship can be determined as the current correction coefficient for the compressor.

[0208] Continuing to take the above Table 3 as an example, assuming that the above warning level is L2, then by looking up the above correction coefficient table, the following second corresponding relationship can be obtained: 0%-1, 20%-0.95, 45%-0.9, 75%-0.85, 100%-0.75. Continuing to assume that the above frost probability is 75%, the target corresponding relationship can be determined from the above second corresponding relationship as 75%-0.85. Then, the correction coefficient 0.85 included in the target corresponding relationship can be determined as the current correction coefficient for the compressor.

[0209] Step 404: Determine the current rotation speed of the compressor.

[0210] Step 405: multiply the above rotational speed by the correction coefficient to obtain the target rotational speed.

[0211] Step 406: Control the compressor to cool the vehicle according to the target speed.

[0212] The following is a unified description of steps 404 to 406:

[0213] The compressor mentioned above refers to a power component that absorbs the refrigerant vapor output by the heat exchange module, which can be a compressor, for example Figure 1 A compressor 12 of a refrigeration system 10 is shown.

[0214] In some embodiments of the present application, the compressor can provide power to the vehicle's refrigeration system by rotating. Based on this, the executing entity of the embodiments of the present application can determine the current speed of the compressor and correct the speed according to the correction coefficient to obtain the target speed.

[0215] As an optional implementation, the above rotational speed may be multiplied by a correction coefficient to obtain a target rotational speed.

[0216] Afterwards, the compressor can be controlled according to the target speed to cool the vehicle.

[0217] The technical solution provided by the embodiment of the present application is to use the above-mentioned frost probability as a keyword to search the preset correction coefficient table, obtain the first correspondence between the multiple warning levels and the correction coefficients corresponding to the frost probability, and the above-mentioned correction coefficient table may include the correspondence between the frost probability, the warning level, and the correction coefficient. According to the above-mentioned warning relationship, a target correspondence including the warning level is determined from the multiple first correspondences, and the correction coefficient included in the above-mentioned target correspondence is determined as the current correction coefficient for the compressor, and the current speed of the compressor is determined. The above speed is multiplied by the correction coefficient to obtain the target speed, and the compressor is controlled to cool the vehicle according to the above-mentioned target speed. This technical solution pre-sets the correspondence between the frost probability, the warning level, and the correction coefficient of the heat exchange module, so that after determining the frost probability and the warning level, the correction coefficient corresponding to the frost probability and the warning level is determined, so that the speed of the compressor is corrected according to the correction coefficient to obtain the target speed, so as to achieve cooling of the vehicle according to the target speed, so as to achieve efficient and accurate determination of the correction coefficient for the compressor to prevent frost on the heat exchange module, so that the frost phenomenon of the heat exchange module can be avoided when the compressor runs at the corrected target speed.

[0218] See also Figure 5 , is a block diagram of an embodiment of a vehicle cooling control device provided in an embodiment of the present application. As an embodiment, Figure 5 The device shown can be applied to the refrigeration system of a vehicle, e.g. Figure 1 The refrigeration system 10 shown. Figure 5 As shown, the device may include:

[0219] An acquisition module 51 is used to acquire a plurality of cooling parameters of the vehicle during cooling operation;

[0220] A first determination module 52 is used to determine the frost probability and warning level of the heat exchange module in the refrigeration system under the current operating conditions based on the refrigeration parameters;

[0221] A second determination module 53 is used to determine a current correction coefficient for the compressor according to the frost probability and the warning level;

[0222] The correction module 54 is used to correct the current rotation speed of the compressor according to the correction coefficient, and cool the vehicle based on the corrected rotation speed.

[0223] like Figure 6 As shown, it is a schematic diagram of the structure of a vehicle provided by an embodiment of the present application, including a processor 61, a communication interface 62, a memory 63, a communication bus 64 and a refrigeration system 65, wherein the processor 61, the communication interface 62, and the memory 63 communicate with each other through the communication bus 64.

[0224] Memory 63, used for storing computer programs;

[0225] The refrigeration system 65 can be used to cool the vehicle, for example Figure 1 The refrigeration system 10 shown;

[0226] In one embodiment of the present application, the processor 61 is used to execute the program stored in the memory 63 to implement the vehicle cooling control method provided by any of the above method embodiments, including:

[0227] Acquire multiple cooling parameters of the vehicle during cooling operation;

[0228] Based on the refrigeration parameters, determining a frost probability and a warning level of frost on a heat exchange module in the refrigeration system under current operating conditions;

[0229] Determining a current correction factor for the compressor according to the frost probability and the warning level;

[0230] The current rotation speed of the compressor is corrected according to the correction coefficient, and the vehicle is cooled based on the corrected target rotation speed.

[0231] An embodiment of the present application further provides a storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the vehicle cooling control method provided in any of the aforementioned method embodiments are implemented.

[0232] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment.

[0233] Through the text of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a general hardware platform, and of course, by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the relevant technology can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiment.

[0234] It should be understood that the terms used in the text are only for the purpose of the specific example implementation of the text, and are not intended to be limited. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used in the text can also be represented to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of the stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or their combinations. The method steps, processes, and operations of the text in the text are not interpreted as necessarily requiring them to be performed in the specific order of the text or description, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps can be used.

[0235] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A cooling control method for a vehicle, characterized in that: Applied to a refrigeration system of a vehicle, the method comprises: Acquire multiple cooling parameters of the vehicle during cooling operation; Based on the refrigeration parameters, determining a frost probability and a warning level of frost on a heat exchange module in the refrigeration system under current operating conditions; Determining a current correction factor for the compressor according to the frost probability and the warning level; The current rotation speed of the compressor is corrected according to the correction coefficient, and the vehicle is cooled based on the corrected target rotation speed.

2. The method according to claim 1, characterized in that The obtaining of a plurality of cooling parameters of the vehicle during cooling operation includes: Collecting multiple temperature values ​​inside the vehicle within a preset time period; Determining a temperature change value of the interior of the vehicle within a preset period according to the plurality of temperature values; Collecting the current relative humidity value inside the vehicle, and the actual temperature value and target temperature value of the heat exchange module; The temperature change value, the current relative humidity value, the actual temperature value, and the target temperature value are determined as cooling parameters of the vehicle during cooling operation.

3. The method according to claim 2, characterized in that The determining, based on the refrigeration parameters, the frost probability and the warning level of the heat exchange module in the refrigeration system under the current operating conditions includes: Based on the refrigeration parameters, determining the cooling rate and the frosting leakage point temperature value corresponding to the heat exchange module under the current operating conditions; Determining the frost probability of the heat exchange module frosting under the current operating conditions according to the refrigeration parameter and the leakage point temperature value; The warning level of frost on the heat exchange module under the current operating conditions is determined according to the refrigeration parameter, the cooling rate, and the leakage point temperature value.

4. The method according to claim 3, characterized in that The determining, based on the refrigeration parameters, the cooling rate and the frosting leakage point temperature value corresponding to the heat exchange module under the current operating conditions includes: Obtaining a first functional relationship between the preset cooling rate and the temperature change value; Calculating the temperature change value and the preset period according to the first functional relationship to obtain the cooling rate; Obtaining a second functional relationship between the preset leakage point temperature value and the current relative humidity value; The current relative humidity value is calculated according to the second functional relationship to obtain the leakage point temperature value.

5. The method according to claim 3, characterized in that: The determining, according to the refrigeration parameter and the leakage point temperature value, the frost probability of the heat exchange module being frosted under the current operating condition comprises: Determining a difference between the target temperature value and the leak point temperature value; The difference is used as a keyword to search for a preset frost probability relationship to obtain a target corresponding relationship including the difference; the frost probability relationship includes a corresponding relationship between the difference between the actual temperature value and the leakage point temperature value and the frost probability; The frost probability included in the target correspondence is determined as the frost probability of the heat exchange module under the current operating conditions.

6. The method according to claim 3, characterized in that The step of determining the warning level of frost on the heat exchange module under the current operating conditions according to the refrigeration parameter, the cooling rate, and the leakage point temperature value includes: Determine the target time required for the temperature of the heat exchange module to drop from the actual temperature value to the leakage point temperature value according to the actual temperature value, the leakage point temperature value, and the cooling rate; The warning level of the heat exchange module under the current operating condition is determined according to the target time.

7. The method according to claim 6, characterized in that Determining the warning level of the heat exchange module under the current operating condition according to the target time includes: Using the target time as a keyword, searching a preset warning level table to obtain a target correspondence relationship including the target time; the warning level table includes a correspondence relationship between time and warning level; The warning level included in the target corresponding relationship is determined as the warning level of the heat exchange module under the current operating condition.

8. The method according to claim 1, characterized in that The step of determining a current correction coefficient for the compressor according to the frost probability and the warning level includes: Using the frost probability as a keyword, searching a preset correction coefficient table to obtain a first correspondence between a plurality of warning levels corresponding to the frost probability and the correction coefficient; the correction coefficient table includes a correspondence between the frost probability, the warning level, and the correction coefficient; According to the warning level, determining a target corresponding relationship including the warning level from a plurality of the first corresponding relationships; The correction coefficient included in the target correspondence is determined as the current correction coefficient for the compressor.

9. The method according to claim 1, characterized in that: The correcting the current rotation speed of the compressor according to the correction coefficient and cooling the vehicle based on the corrected target rotation speed includes: determining a current rotation speed of the compressor; Multiplying the rotation speed by the correction coefficient to obtain a target rotation speed; The compressor is controlled according to the target speed to cool the vehicle.

10. A cooling control device for a vehicle, characterized in that: Applicable to a refrigeration system of a vehicle, the device comprising: An acquisition module, used for acquiring a plurality of refrigeration parameters of the vehicle during refrigeration operation; A first determination module is used to determine the frost probability and warning level of the heat exchange module in the refrigeration system under the current operating conditions based on the refrigeration parameters; A second determination module is used to determine a current correction coefficient for the compressor according to the frost probability and the warning level; The correction module is used to correct the current rotation speed of the compressor according to the correction coefficient, and cool the vehicle based on the corrected target rotation speed.

11. A vehicle, characterized in that: include: A refrigeration system, the refrigeration system comprising a processor and a memory, the processor being used to execute a vehicle refrigeration control program stored in the memory to implement the vehicle refrigeration control method according to any one of claims 1 to 9.

12. A storage medium, characterized in that: The storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the vehicle cooling control method according to any one of claims 1 to 9.

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