Anti-frosting control method, device and equipment for cooling system and vehicle

Abstract

The invention provides an anti-frosting control method, device and equipment of a cooling system and a vehicle, the anti-frosting control method of the cooling system is applied to the vehicle, the cooling system comprises an evaporator and a cooling assembly, and the method comprises the steps that whether the cooling system has a frosting risk or not is detected according to environment parameters of the vehicle and operation parameters of the cooling system; if the cooling system has the frosting risk, demand parameters of a cooling assembly are determined according to the real-time difference value of the actual temperature and the target temperature of the evaporator; and controlling the cooling assembly according to the demand parameters of the cooling assembly. The running state of the cooling assembly can be dynamically adjusted, frosting is effectively restrained, extra bad perception of a user cannot be caused, the balance state can be maintained for a long time, and the NVH performance of the whole vehicle is prevented from being affected by frequent adjustment.

Description

Technical Field

[0001] The present application relates to the technical field of cooling system control, and in particular to an anti-frost control method, device, equipment and vehicle for a cooling system. Background Art

[0002] In the cooling system of new energy vehicles, the air conditioning cooling system plays a key role in ensuring the comfort of the drivers and passengers in the car, and the battery cooling system plays a key role in cooling the power battery and ensuring the optimal state of the power battery. The cooling system of new energy vehicles faces unique challenges under low-load cooling conditions: under low-load cooling conditions, the cooling system of new energy vehicles has an imbalance between supply and demand of cooling capacity, and the phenomenon of supply exceeding demand is more prominent. Excessive cooling capacity will cause the evaporator to continue to cool down. When the surface temperature of the evaporator drops to a certain level, close to the frost point temperature of moisture in the air, the evaporator will begin to frost, thereby reducing the overall performance of the cooling system.

[0003] In the prior art, in order to solve the problem of evaporator frosting, the throttle valve is usually opened and closed. The specific working principle is that when the actual temperature of the evaporator drops to a temperature close to the frosting point of the moisture in the air, the throttle valve will be automatically closed, thereby preventing the refrigerant from passing through, slowing down the cooling speed of the evaporator, and preventing further frosting. When the actual temperature of the evaporator rises to a temperature greater than the frosting point of the moisture in the air, the throttle valve will be opened again to allow the refrigerant to pass normally, restoring the normal refrigeration function of the cooling system.

[0004] However, this control strategy of frequently switching the throttle body has obvious disadvantages. From the perspective of driving comfort, frequent switching of the valve body will cause the vehicle's air outlet temperature to be unable to remain constant, and the air temperature in the vehicle will experience large changes in temperature, which will cause additional adverse perceptions to the driver and passengers in the vehicle, especially during long-term driving. This temperature instability will make the driver and passengers feel irritated and uncomfortable. From the perspective of vehicle performance, the valve body will produce the impact sound of the refrigerant during the switching process. This impact sound will not only directly increase the noise level in the car, but may also cause a series of vibration problems, which will have a negative impact on the noise, vibration and harshness (NVH) performance of the vehicle, thereby significantly reducing the overall quality of the vehicle and user satisfaction. Summary of the invention

[0005] In view of the above, it is necessary to propose a cooling system anti-frosting control method, device, equipment and vehicle to solve the technical problem that the existing way to solve the evaporator frosting problem will bring additional adverse perceptions to the drivers and passengers in the vehicle and reduce the NVH performance of the whole vehicle.

[0006] In a first aspect, the present application provides an anti-frost control method for a cooling system, which is applied to a vehicle, wherein the cooling system includes an evaporator and a cooling component, and the method includes: detecting whether there is a risk of frost in the cooling system based on the environmental parameters of the vehicle and the operating parameters of the cooling system; if there is a risk of frost in the cooling system, determining a demand parameter of the cooling component based on a real-time difference between an actual temperature of the evaporator and a target temperature; and controlling the cooling component based on the demand parameter of the cooling component.

[0007] In the anti-frost control method of the cooling system of the above embodiment, firstly, whether the cooling system has a frost risk is detected according to the environmental parameters of the vehicle and the operating parameters of the cooling system; if the cooling system has a frost risk, the demand parameter of the cooling component is determined according to the real-time difference between the actual temperature of the evaporator and the target temperature; and then the cooling component is controlled according to the demand parameter of the cooling component. Based on this, the present application can accurately determine whether the cooling system is facing a frost risk by detecting the environmental parameters of the vehicle and the operating parameters of the cooling system in real time, so that the present application does not take measures after the frost occurs, but makes a pre-judgment in advance to avoid the occurrence of the frost problem from the source, and ensure the continuous and stable operation of the cooling system. Comprehensively considering multiple parameters instead of a single parameter improves the accuracy of the frost risk judgment and reduces misjudgment. When it is determined that there is a frost risk, the demand parameter of the cooling component is determined according to the real-time difference between the actual temperature of the evaporator and the target temperature, and the operating state of the cooling component can be accurately adjusted according to the current temperature deviation of the evaporator, so that the actual temperature of the evaporator quickly and stably approaches the target temperature, the heat dissipation is controlled to achieve a balance between supply and demand, and frost is effectively suppressed. The adjustment process is smooth and will not cause additional user adverse perception. Since it is a real-time difference calculation, the demand parameters of the cooling component will be adaptively adjusted as the actual temperature of the evaporator changes, rather than using a fixed control strategy. It can better adapt to different working conditions and environmental changes, and the equilibrium state can be maintained for a long time, and a good anti-frosting effect can be maintained, avoiding frequent adjustments that affect the NVH performance of the vehicle. By precisely controlling the cooling components, the cooling system is always in a relatively ideal operating state, avoiding problems such as reduced cooling efficiency and increased energy consumption caused by frosting. For example, frosting will affect the heat exchange efficiency of the evaporator, resulting in insufficient cooling capacity, and reduce the damage of frosting to the cooling system components. For example, it avoids corrosion of components by water droplets produced by melting frosting, and additional wear of components caused by frosting, thereby extending the service life of various components of the cooling system and reducing the maintenance cost of the cooling system. For the vehicle's cooling system, a stable cooling effect can provide a comfortable riding environment for passengers in the car, and will not cause unstable cooling due to frosting problems, resulting in hot and cold situations.

[0008] In some embodiments of the present application, the cooling component includes a compressor, and the demand parameters of the cooling component include the speed of the compressor. The determination of the demand parameters of the cooling component based on the real-time difference between the actual temperature of the evaporator and the target temperature includes: if the real-time difference is greater than a first preset temperature difference, determining that the compressor increases the speed; if the real-time difference is within a preset temperature difference range, determining that the compressor maintains the current speed, and the preset temperature difference range is greater than or equal to a second preset temperature difference and less than or equal to the first preset temperature difference; if the real-time difference is less than the second preset temperature difference, determining that the compressor reduces the speed.

[0009] In some embodiments of the present application, the cooling component also includes a fan, and the demand parameters of the cooling component also include the speed of the fan. Determining the demand parameters of the cooling component based on the real-time difference between the actual temperature of the evaporator and the target temperature also includes: if the compressor continues to reduce the speed until it is reduced to the lowest speed, and the real-time difference is still not within the preset temperature difference range, determining that the speed of the fan is reduced by a first preset value.

[0010] In some embodiments of the present application, determining the demand parameters of the cooling component based on the real-time difference between the actual temperature of the evaporator and the target temperature also includes: if the fan speed is reduced by the first preset value and after a preset time interval, the real-time difference is still not within the preset temperature difference range, determining that the fan speed is reduced by the first preset value again.

[0011] In some embodiments of the present application, determining the demand parameter of the cooling component based on the real-time difference between the actual temperature of the evaporator and the target temperature also includes: if the real-time difference is within the preset temperature difference range, determining that the fan maintains the current speed.

[0012] In some embodiments of the present application, the cooling component also includes an active air intake grille, and the demand parameters of the cooling component also include the opening of the active air intake grille; the method of determining the demand parameters of the cooling component based on the real-time difference between the actual temperature of the evaporator and the target temperature also includes: if the speed of the fan continues to decrease until it is reduced to zero, and the real-time difference is still not within the preset temperature difference range, determining that the opening of the active air intake grille is reduced to a second preset value.

[0013] In some embodiments of the present application, determining the demand parameters of the cooling component based on the real-time difference between the actual temperature of the evaporator and the target temperature also includes: if the real-time difference is still not within the preset temperature difference range after the opening of the active air intake grille is reduced by the second preset value, determining that the opening of the active air intake grille is reduced again by the second preset value.

[0014] In some embodiments of the present application, determining the demand parameters of the cooling component based on the real-time difference between the actual temperature of the evaporator and the target temperature also includes: if the real-time difference is within the preset temperature difference range, determining that the active air intake grille maintains a current opening.

[0015] In a second aspect, the present application also provides an anti-frost control device for a cooling system, which is applied to a cooling system of a vehicle, wherein the cooling system includes an evaporator and a cooling component, and the device includes: a detection module, for detecting whether there is a risk of frost in the cooling system based on the environmental parameters of the vehicle and the operating parameters of the cooling system; a determination module, for determining the demand parameters of the cooling component based on the real-time difference between the actual temperature of the evaporator and the target temperature if there is a risk of frost in the cooling system; and a control module, for controlling the cooling component based on the demand parameters of the cooling component.

[0016] In a third aspect, the present application also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the steps of the anti-frost control method for the cooling system described in the above embodiment.

[0017] In a fourth aspect, the present application also provides a vehicle, which includes the electronic device described in the above embodiment.

[0018] It can be understood that the anti-frost control device of the cooling system of the second aspect, the electronic device of the third aspect and the vehicle of the fourth aspect provided above all correspond to the anti-frost control method of the cooling system of the first aspect. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding anti-frost control method of the cooling system provided above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an application scenario diagram of the anti-frost control method of the cooling system provided in one embodiment of the present application.

[0020] Figure 2 It is a flow chart of an anti-frost control method for a cooling system provided in one embodiment of the present application.

[0021] Figure 3 It is a detailed flow chart of an anti-frost control method for a cooling system provided in one embodiment of the present application.

[0022] Figure 4 It is a schematic diagram of the functional modules of an anti-frost control device for a cooling system provided in one embodiment of the present application.

[0023] Figure 5It is a schematic diagram of the structure of an electronic device provided in one embodiment of the present application.

[0024] Component Symbols Vehicle 1 Electronic devices 10 Memory 11 Processor 12 Anti-frost control device for cooling system 100 Detection module 110 Determination module 120 Control module 130 The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0025] The 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 only used to explain the present application, and cannot be understood as limiting the present application.

[0026] In the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, words such as "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "for example" is intended to present related concepts in a specific way.

[0027] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] In the description of the present application, it should be noted that, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In addition, in the description of the present application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically limited.

[0029] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0030] See also Figure 1 , which is a schematic diagram of an application scenario of an anti-frost control method for a cooling system provided in one embodiment of the present application.

[0031] Specifically, the cooling system is a double-evaporation heat exchange system consisting of an air conditioning cooling system and a battery cooling system. The cooling system may include but is not limited to air conditioning, a condenser (Cond), an evaporator, a high-voltage battery cooling heat exchanger (Chiller), a thermal expansion valve, a cooling assembly and other components. The cooling assembly includes a compressor (Compress), a fan (Fan), and an active grille (Active Grille System, AGS). Among them, the condenser, compressor, high-voltage battery cooling heat exchanger and other components are connected through refrigerant pipelines.

[0032] Among them, the air conditioner is used to cool the passenger compartment of vehicle 1, and the high-voltage battery cooling heat exchanger is used to cool the power battery of vehicle 1. The air intake of the condenser can be controlled by adjusting the opening size of the active air intake grille, and the air intake of the condenser can be adjusted by adjusting the speed of the fan.

[0033] In some embodiments of the present application, the cooling system also includes an air conditioning heat exchanger (Evap_1), an air conditioning blower (Blow_1), an air conditioning electromagnetic thermal expansion valve (ETXV_1), a high-voltage battery cooling heat exchanger electromagnetic thermal expansion valve (ETXV_2), a coaxial tube and other components, which together constitute a double-evaporation heat exchange system.

[0034] The cooling system in the above-mentioned embodiment can realize operating modes including the operating modes of turning on the air conditioner alone, turning on the high-voltage battery cooling heat exchanger alone, and turning on both the air conditioner and the high-voltage battery cooling heat exchanger. It can thus realize the functions of cooling the passenger compartment of vehicle 1 and cooling the power battery of vehicle 1, thereby ensuring the comfort of the passenger compartment while meeting the cooling requirements of the power battery.

[0035] In some embodiments of the present application, the cooling system further includes a pressure sensor (P) and a plurality of temperature sensors (T). The pressure sensor is disposed at the outlet of the compressor to monitor the pressure value of the refrigerant at each stage of the refrigeration cycle. For example, at the outlet of the compressor, the pressure sensor can monitor the high-pressure state of the refrigerant after being compressed, and at the inlet of the evaporator, the low-pressure state of the refrigerant after throttling and decompression can be detected. Through these pressure data, the pressure distribution of the cooling system can be fully understood, so as to determine whether the cooling system is operating normally. The temperature sensor is disposed on the surface of the evaporator and at the outlet of the condenser to monitor the actual temperature of key parts such as the evaporator and the condenser. The temperature sensor at the evaporator can monitor the temperature of the refrigerant when it evaporates and absorbs heat, which is closely related to the refrigeration effect of the cold zone system. The temperature sensor at the condenser can monitor the temperature of the refrigerant after heat dissipation, reflect the heat dissipation situation, and provide a basis for the temperature control of the cooling system.

[0036] See also Figure 2 , is a schematic diagram of the steps of an anti-frost control method for a cooling system provided in one embodiment of the present application.

[0037] The embodiment of the present application provides an anti-frost control method for a cooling system, which can be applied to one or more electronic devices 10. The electronic device 10 is a device that can automatically perform numerical calculations and / or information processing according to pre-set or stored instructions, and its hardware includes but is not limited to a microprocessor, an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a programmable gate array (Field-Programmable Gate Array, FPGA), a digital processor (Digital Signal Processor, DSP), an embedded device, etc.

[0038] In some embodiments of the present application, the electronic device 10 can be communicatively connected to a desktop computer, a notebook, a PDA, a cloud server, or other devices.

[0039] In some embodiments of the present application, the electronic device 10 can perform human-computer interaction with the user through a keyboard, a mouse, a remote control, a touch pad, or a voice control device.

[0040] In some embodiments of the present application, the electronic device 10 may also include a network device and / or a client device. The network device includes but is not limited to a single network server, a server group consisting of multiple network servers, and a cloud server consisting of a large number of hosts or network servers based on cloud computing.

[0041] In some embodiments of the present application, the network where the electronic device 10 is located includes but is not limited to the Internet, a wide area network, a metropolitan area network, a local area network, a virtual private network (VPN), etc.

[0042] In some embodiments of the present application, the present application also provides a vehicle 1, which includes an electronic device 10. The electronic device 10 may be an onboard device of the vehicle 1, such as a body control module (BCM), a vehicle control unit (VCU), etc.

[0043] Specifically, the anti-frost control method of the cooling system includes the following steps. According to different requirements, the order of some steps in the flow chart can be changed, and some steps can be omitted.

[0044] Step S10, detecting whether there is a risk of frost in the cooling system according to the environmental parameters of the vehicle and the operating parameters of the cooling system.

[0045] In some embodiments of the present application, environmental parameters include but are not limited to parameters such as the current ambient temperature and lighting conditions of the vehicle 1.

[0046] In some embodiments of the present application, the operating parameters of the cooling system include but are not limited to the heat exchange amount on the condenser side and the heat load amount on the evaporator side.

[0047] In some embodiments of the present application, when the vehicle 1 is in a low ambient temperature and low load state, at this time, the heat load in the passenger compartment is small, and the temperature requirements of the passenger compartment can be met by turning the air conditioner to gear 1 or 2. At the same time, the power battery can also be quickly cooled to a reasonable cooling temperature range. At this time, the heat exchange amount on the condenser side is greater than the heat load on the evaporator side, and the cold supply is greater than the demand. The actual temperature of the evaporator continues to decrease, which will cause frost. The refrigerant does not evaporate in the evaporator, which will cause liquid return, thereby damaging the mechanical properties of the compressor, thereby causing a cold zone system failure. Based on this, when the current ambient temperature of the vehicle 1 is less than or equal to the preset temperature, such as 25°C, the illumination condition is no illumination, and the heat exchange amount on the condenser side is greater than the heat load on the evaporator side, it can be determined that the cooling system is at risk of frost.

[0048] In some embodiments of the present application, if there is no risk of frost forming in the cooling system, the electronic device 10 returns to executing step S10.

[0049] In some embodiments of the present application, if there is a risk of frost in the cooling system, the electronic device 10 executes step S11.

[0050] Step S11, determining the demand parameter of the cooling component according to the real-time difference between the actual temperature of the evaporator and the target temperature.

[0051] In some embodiments of the present application, the cooling assembly includes a compressor, a fan, and an active air intake grille, wherein the demand parameter of the compressor may include the rotation speed of the compressor.

[0052] In some embodiments of the present application, the electronic device 10 may monitor the actual temperature of the evaporator through a temperature sensor on the surface of the evaporator, and then determine the real-time difference between the actual temperature and the target temperature.

[0053] In some embodiments of the present application, in new energy vehicles, the air conditioning cooling system and the battery cooling system usually need to comprehensively consider the needs of the passenger compartment and the battery. The target temperature can be a comprehensive value, which needs to be dynamically adjusted according to the actual needs of the passenger compartment and the battery. For example, when the required temperature of the battery is high, the cooling demand of the battery is given priority. At this time, the target temperature is adjusted based on the required temperature of the power battery and the required temperature of the passenger compartment as a supplement; when the temperature of the passenger compartment is high, the cooling demand of the passenger compartment is given priority. At this time, the target temperature is adjusted based on the required temperature of the passenger compartment and the required temperature of the power battery as a supplement.

[0054] The required temperature of the passenger compartment is set according to the comfort requirements of the passengers. Usually, the required temperature of the passenger compartment can be adjusted through the control panel in the vehicle 1 to ensure a comfortable temperature in the passenger compartment. The required temperature of the power battery is set according to the optimal operating temperature range of the power battery. The power battery performs best within a certain temperature range (usually 20°C-30°C). Too low or too high temperature will affect the performance and life of the power battery. Therefore, the required temperature of the battery cooling system is to ensure that the power battery operates within the optimal operating temperature range.

[0055] In some embodiments of the present application, the cooling component includes a compressor, and the demand parameters of the cooling component include the speed of the compressor. Determining the demand parameters of the cooling component based on the real-time difference between the actual temperature of the evaporator and the target temperature includes: if the real-time difference is greater than the first preset temperature difference, determining that the compressor increases the speed; if the real-time difference is within the preset temperature difference range, determining that the compressor maintains the current speed, and the preset temperature difference range is greater than or equal to the second preset temperature difference and less than or equal to the first preset temperature difference; if the real-time difference is less than the second preset temperature difference, determining that the compressor reduces the speed.

[0056] In some embodiments of the present application, the cooling component also includes a fan, and the demand parameters of the cooling component also include the speed of the fan. Determining the demand parameters of the cooling component based on the real-time difference between the actual temperature of the evaporator and the target temperature also includes: if the compressor continues to reduce the speed until it is reduced to the lowest speed, the real-time difference is still not within the preset temperature difference range, determining that the fan speed is reduced to the first preset value.

[0057] In some embodiments of the present application, determining the demand parameters of the cooling component based on the real-time difference between the actual temperature of the evaporator and the target temperature also includes: if the fan speed is reduced by a first preset value and after a preset time interval, the real-time difference is still not within the preset temperature difference range, determining that the fan speed is reduced by the first preset value again.

[0058] In some embodiments of the present application, determining the demand parameter of the cooling component according to the real-time difference between the actual temperature of the evaporator and the target temperature also includes: if the real-time difference is within a preset temperature difference range, determining that the fan maintains a current speed.

[0059] In some embodiments of the present application, the cooling component also includes an active air intake grille, and the demand parameters of the cooling component also include the opening of the active air intake grille; determining the demand parameters of the cooling component based on the real-time difference between the actual temperature of the evaporator and the target temperature also includes: if the fan speed continues to decrease until it is reduced to zero, the real-time difference is still not within the preset temperature difference range, determining that the opening of the active air intake grille is reduced to a second preset value.

[0060] In some embodiments of the present application, determining the demand parameters of the cooling component based on the real-time difference between the actual temperature of the evaporator and the target temperature also includes: if the real-time difference is still not within the preset temperature difference range after the opening of the active air intake grille is reduced by a second preset value, determining that the opening of the active air intake grille is reduced again by a second preset value.

[0061] In some embodiments of the present application, determining the demand parameters of the cooling component based on the real-time difference between the actual temperature of the evaporator and the target temperature also includes: if the real-time difference is within a preset temperature difference range, determining that the active air intake grille maintains a current opening. It should be noted that how to determine the required parameters of the cooling component based on the difference between the actual temperature of the evaporator and the target temperature will be discussed in the following section. Figure 3 The steps shown are described in detail and will not be repeated here to avoid repetition.

[0062] Step S12, controlling the cooling component according to the required parameters of the cooling component.

[0063] In some embodiments of the present application, the electronic device 10 can control the compressor according to the compressor speed in the demand parameters, control the fan according to the fan speed in the demand parameters, and control the active air intake grille according to the opening of the active air intake grille in the demand parameters.

[0064] In the anti-frost control method of the cooling system of the above embodiment, firstly, whether the cooling system has a risk of frost is detected according to the environmental parameters of the vehicle 1 and the operating parameters of the cooling system; if the cooling system has a risk of frost, the demand parameter of the cooling component is determined according to the real-time difference between the actual temperature of the evaporator and the target temperature; and then the cooling component is controlled according to the demand parameter of the cooling component. Based on this, the present application can accurately determine whether the cooling system is facing a risk of frost by detecting the environmental parameters of the vehicle 1 and the operating parameters of the cooling system in real time, so that the present application does not take measures after frost occurs, but makes a pre-judgment in advance to avoid the occurrence of frost problems from the source, and ensure the continuous and stable operation of the cooling system. Comprehensively considering multiple parameters instead of a single parameter improves the accuracy of frost risk judgment and reduces misjudgment. When it is determined that there is a risk of frost, the demand parameter of the cooling component is determined according to the real-time difference between the actual temperature of the evaporator and the target temperature, and the operating state of the cooling component can be accurately adjusted according to the current temperature deviation of the evaporator, so that the actual temperature of the evaporator quickly and stably approaches the target temperature, the heat dissipation is controlled to achieve a balance between supply and demand, and frost is effectively suppressed. The adjustment process is smooth and will not cause additional user adverse perception. Since it is a real-time difference calculation, the demand parameters of the cooling component will be adaptively adjusted as the actual temperature of the evaporator changes, rather than using a fixed control strategy. It can better adapt to different working conditions and environmental changes, and the equilibrium state can be maintained for a long time, and a good anti-frosting effect can be maintained, avoiding frequent adjustments that affect the NVH performance of the vehicle. By accurately controlling the cooling components, the cooling system is always in a relatively ideal operating state, avoiding problems such as reduced cooling efficiency and increased energy consumption caused by frosting. For example, frosting will affect the heat exchange efficiency of the evaporator, resulting in insufficient cooling capacity, and reduce the damage of frosting to the cooling system components, such as avoiding corrosion of components by water droplets produced by melting frosting, and additional wear of components caused by frosting, thereby extending the service life of various components of the cooling system and reducing the maintenance cost of the cooling system. For the cooling system of vehicle 1, a stable cooling effect can provide a comfortable riding environment for passengers in the vehicle, and will not cause unstable cooling due to frosting problems, resulting in hot and cold situations.

[0065] See also Figure 3 , which is a detailed flow chart of an anti-frost control method for a cooling system provided in one embodiment of the present application.

[0066] This embodiment is a specific description of step S11 in the above embodiment, and further describes how to determine the required parameters of the cooling component according to the difference between the actual temperature of the evaporator and the target temperature. Specifically, it includes the following steps: Step S110, obtaining a real-time difference between the actual temperature of the evaporator and the target temperature.

[0067] Specifically, the electronic device 10 may monitor the actual temperature of the evaporator through a temperature sensor on the surface of the evaporator, and then determine the real-time difference between the actual temperature and the target temperature.

[0068] In some embodiments of the present application, in new energy vehicles, the air conditioning cooling system and the battery cooling system usually need to comprehensively consider the needs of the passenger compartment and the battery. The target temperature can be a comprehensive value, which needs to be dynamically adjusted according to the actual needs of the passenger compartment and the battery. For example, when the required temperature of the battery is high, the cooling demand of the battery is given priority. At this time, the target temperature is adjusted based on the required temperature of the power battery and the required temperature of the passenger compartment as a supplement; when the temperature of the passenger compartment is high, the cooling demand of the passenger compartment is given priority. At this time, the target temperature is adjusted based on the required temperature of the passenger compartment and the required temperature of the power battery as a supplement.

[0069] Step S111: if the real-time difference is greater than the first preset temperature difference, it is determined that the compressor increases its speed.

[0070] In some embodiments of the present application, the first preset temperature difference may be 0.5° C. In other embodiments, the first preset temperature difference may be set according to actual needs.

[0071] In some embodiments of the present application, if the real-time difference is greater than the first preset temperature difference, it indicates that the actual temperature of the evaporator is much higher than the target temperature. At this time, the compressor needs to be loaded at a normal speed to increase the cooling capacity so that the actual temperature of the evaporator drops to near the target temperature as soon as possible.

[0072] In some embodiments of the present application, after determining that the compressor increases its speed, the electronic device 10 controls the compressor to a normal loading speed.

[0073] Step S112: If the real-time difference is within the preset temperature difference range, it is determined that the compressor maintains the current speed.

[0074] In some embodiments of the present application, the preset temperature difference range is greater than or equal to the second preset temperature difference and less than or equal to the first preset temperature difference.

[0075] In some embodiments of the present application, the second preset temperature difference may be -0.5° C. In other embodiments, the second preset temperature difference may be set according to actual needs.

[0076] In some embodiments of the present application, if the real-time difference is within the preset temperature difference range, indicating that the real-time difference between the actual temperature of the evaporator and the target temperature is within the allowable range, the compressor only needs to maintain the current speed to keep the cooling system running stably.

[0077] Step S113: if the real-time difference is less than the second preset temperature difference, it is determined that the compressor reduces the speed.

[0078] In some embodiments of the present application, if the real-time difference is less than the second preset temperature difference, it indicates that the actual temperature of the evaporator is much lower than the target temperature. At this time, the compressor needs to reduce the speed and reduce the cooling capacity. In some embodiments of the present application, if the real-time difference is still not within the preset temperature difference range after the compressor is controlled to reduce its speed, the compressor is continuously controlled to reduce its speed, and each time the speed is reduced, the real-time difference is detected to be within the preset temperature difference range. If the real-time difference is detected to be within the preset temperature difference range during the reduction of the compressor speed, it indicates that the real-time difference between the actual temperature of the evaporator and the target temperature is within the allowable range, and the compressor is determined to maintain the current speed, so that the cooling system can be kept running stably.

[0079] Step S114: if the compressor continues to reduce its speed until it reaches the lowest speed, and the real-time difference is still not within the preset temperature difference range, it is determined that the fan speed is reduced by a first preset value.

[0080] In some embodiments of the present application, if the compressor continues to reduce its speed until it reaches the minimum speed, and the real-time difference is still not within the preset temperature difference range, it indicates that the current air intake on the condenser side is large and the cooling capacity is greater than the heat load. At this time, it is necessary to further reduce the fan speed, and then determine that the fan speed is reduced by a first preset value. For example, the first preset value may be 10% of the current speed of the fan, thereby reducing the cooling air volume of the condenser, thereby reducing the heat dissipation capacity of the condenser and balancing the supply and demand of cooling capacity of the cooling system.

[0081] Step S115, if it is determined that the speed of the fan is reduced by a first preset value, and after a preset time interval, the real-time difference is still not within the preset temperature difference range, it is determined that the speed of the fan is reduced by the first preset value again.

[0082] In some embodiments of the present application, the preset duration may be 120 seconds.

[0083] In some embodiments of the present application, if it is determined that the fan speed is reduced by a first preset value, and after a preset time interval, the real-time difference is still not within the preset temperature difference range, it indicates that the current air intake on the condenser side is still relatively large, and the cooling capacity is still greater than the heat load. At this time, it is necessary to further reduce the fan speed, and then determine that the fan speed is reduced by the first preset value again.

[0084] In some embodiments of the present application, the anti-frost control method of the cooling system further includes: if the real-time difference is within the preset temperature difference range, determining that the fan maintains the current speed. If the real-time difference is within the preset temperature difference range, it indicates that the real-time difference between the actual temperature of the evaporator and the target temperature is within the allowable range, and determining that the fan maintains the current speed can keep the cooling system running stably.

[0085] In some embodiments of the present application, if the real-time difference is still not within the preset temperature difference range, the fan speed is continuously controlled to be reduced by the first preset value, and each time the speed is reduced, it is detected whether the real-time difference is within the preset temperature difference range. If the fan speed is reduced and the real-time difference is detected to be within the preset temperature difference range, it indicates that the real-time difference between the actual temperature of the evaporator and the target temperature is within the allowable range, and the fan is determined to maintain the current speed, so that the cooling system can be kept running stably.

[0086] Step S116: if the fan speed continues to decrease until it decreases to zero, and the real-time difference is still not within the preset temperature difference range, it is determined that the opening of the active air intake grille is reduced by a second preset value.

[0087] In some embodiments of the present application, if it is determined that the fan speed is reduced, and after the fan speed is reduced to zero, the real-time difference is still not within the preset temperature difference range, indicating that the current air intake on the condenser side is still relatively large, and the cooling capacity is greater than the heat load. At this time, it is necessary to further reduce the opening of the active air intake grille, and then determine that the opening of the active air intake grille is reduced by a second preset value. For example, the second preset value can be 5°, thereby reducing the cooling air volume of the condenser, thereby reducing the heat dissipation capacity of the condenser, and balancing the supply and demand of coldness of the cooling system.

[0088] Step S117, if it is determined that after the opening of the active air intake grille is reduced by the second preset value and after a preset time interval, the real-time difference is still not within the preset temperature difference range, it is determined that the opening of the active air intake grille is reduced by the second preset value again.

[0089] In some embodiments of the present application, the preset duration may be 120 seconds.

[0090] In some embodiments of the present application, if it is determined that the opening of the active air intake grille is reduced by a second preset value, and after a preset time interval, the real-time difference is still not within the preset temperature difference range, it indicates that the current air intake volume on the condenser side is still relatively large, and the cooling capacity is still greater than the heat load. At this time, it is necessary to further reduce the opening of the active air intake grille, and then determine that the opening of the active air intake grille is reduced again by a second preset value.

[0091] Step S118: If the real-time difference is within the preset temperature difference range, determine that the active air intake grille maintains the current opening.

[0092] In some embodiments of the present application, if the real-time difference is within the preset temperature difference range, indicating that the real-time difference between the actual temperature of the evaporator and the target temperature is within the allowable range, the active air intake grille is determined to maintain the current opening, so that the cooling system can maintain stable operation.

[0093] In some embodiments of the present application, if the real-time difference is still not within the preset temperature difference range, then the opening of the active air intake grille is continuously controlled to decrease by the second preset value, and each time the speed is reduced, the real-time difference is detected to be within the preset temperature difference range. If the opening of the active air intake grille is being reduced and the real-time difference is detected to be within the preset temperature difference range, it indicates that the real-time difference between the actual temperature of the evaporator and the target temperature is within the allowable range, and the active air intake grille is determined to maintain the current opening, so that the cooling system can be kept running stably.

[0094] In the above embodiment, a multi-level, adaptive anti-frosting control method is used to make the actual temperature of the evaporator stably approach the target temperature, control the heat dissipation to achieve a balance between supply and demand, effectively suppress frosting, and make the adjustment process smooth without causing additional negative user perception. It can better adapt to different working conditions and environmental changes, and the equilibrium state can be maintained for a long time, thereby maintaining a good anti-frosting effect and avoiding frequent adjustments that affect the NVH performance of the entire vehicle, thereby improving the reliability and stability of the cooling system of the entire vehicle 1 and providing users with a more comfortable and reliable driving experience.

[0095] See also Figure 4 , is a schematic diagram of the functional modules of an anti-frost control device 100 for a cooling system provided in one embodiment of the present application.

[0096] In this embodiment, based on the above Figure 2 The present application also provides an anti-frost control device 100 for a cooling system, which can be used to execute the anti-frost control method for the cooling system described above, based on the same concept as the anti-frost control method for the cooling system in the illustrated embodiment. For ease of explanation, the schematic diagram of the composition of the anti-frost control device 100 for a cooling system only shows the parts related to the embodiment of the present application. Those skilled in the art can understand that the illustrated structure does not constitute a limitation on the anti-frost control device 100 for a cooling system, and may include more or fewer components than those illustrated, or combine certain components, or arrange the components differently.

[0097] Specifically, the anti-frost control device 100 of the cooling system provided in the embodiment of the present application includes a detection module 110, a determination module 120, and a control module 130. The detection module 110 is used to detect whether the cooling system has a risk of frost according to the environmental parameters of the vehicle 1 and the operating parameters of the cooling system. The determination module 120 is used to determine the demand parameters of the cooling component according to the real-time difference between the actual temperature of the evaporator and the target temperature if the cooling system has a risk of frost; the control module 130 is used to control the cooling component according to the demand parameters of the cooling component.

[0098] In the anti-frost control device 100 of the cooling system of the above embodiment, firstly, whether the cooling system has a risk of frost is detected according to the environmental parameters of the vehicle 1 and the operating parameters of the cooling system; if the cooling system has a risk of frost, the demand parameter of the cooling component is determined according to the real-time difference between the actual temperature of the evaporator and the target temperature; and then the cooling component is controlled according to the demand parameter of the cooling component. Based on this, the present application can accurately determine whether the cooling system is facing a risk of frost by detecting the environmental parameters of the vehicle 1 and the operating parameters of the cooling system in real time, so that the present application does not take measures after frost occurs, but makes a pre-judgment in advance to avoid the occurrence of frost problems from the source, and ensure the continuous and stable operation of the cooling system. Comprehensively considering multiple parameters instead of a single parameter improves the accuracy of frost risk judgment and reduces misjudgment. When it is determined that there is a risk of frost, the demand parameter of the cooling component is determined according to the real-time difference between the actual temperature of the evaporator and the target temperature, and the operating state of the cooling component can be accurately adjusted according to the current temperature deviation of the evaporator, so that the actual temperature of the evaporator quickly and stably approaches the target temperature, the heat dissipation is controlled to achieve a balance between supply and demand, and frost is effectively suppressed. The adjustment process is smooth and will not cause additional user adverse perception. Since it is a real-time difference calculation, the demand parameters of the cooling component will be adaptively adjusted as the actual temperature of the evaporator changes, rather than using a fixed control strategy. It can better adapt to different working conditions and environmental changes, and the equilibrium state can be maintained for a long time, and a good anti-frosting effect can be maintained, avoiding frequent adjustments that affect the NVH performance of the vehicle. By accurately controlling the cooling components, the cooling system is always in a relatively ideal operating state, avoiding problems such as reduced cooling efficiency and increased energy consumption caused by frosting. For example, frosting will affect the heat exchange efficiency of the evaporator, resulting in insufficient cooling capacity, and reduce the damage of frosting to the cooling system components, such as avoiding corrosion of components by water droplets produced by melting frosting, and additional wear of components caused by frosting, thereby extending the service life of various components of the cooling system and reducing the maintenance cost of the cooling system. For the cooling system of vehicle 1, a stable cooling effect can provide a comfortable riding environment for passengers in the vehicle, and will not cause unstable cooling due to frosting problems, resulting in hot and cold situations.

[0099] See also Figure 5, is a schematic diagram of the structure of an electronic device 10 provided in one embodiment of the present application.

[0100] In some embodiments of the present application, the electronic device 10 includes, but is not limited to, a memory 11, a processor 12, and a computer program stored in the memory 11 and executable on the processor 12, such as an anti-frost control program for a cooling system. When the computer program is executed by the processor, an anti-frost control method for a cooling system as in the above-described embodiment is implemented.

[0101] Figure 5 Only the electronic device 10 having the memory 11 and the processor 12 is shown, and those skilled in the art can understand that Figure 5 The structure shown does not constitute a limitation on the electronic device 10 , and the electronic device 10 may include fewer or more components than shown in the figure, or combine some components, or arrange the components differently.

[0102] The memory 11 in the electronic device 10 stores multiple computer-readable instructions to implement an anti-frost control method for a cooling system, and the processor 12 can execute the multiple instructions to achieve: detecting whether the cooling system has a risk of frost according to the environmental parameters of the vehicle 1 and the operating parameters of the cooling system; if the cooling system has a risk of frost, determining the demand parameters of the cooling component according to the real-time difference between the actual temperature of the evaporator and the target temperature; and controlling the cooling component according to the demand parameters of the cooling component.

[0103] Specifically, the specific implementation method of the processor 12 for the above instructions can refer to Figure 2 The description of the relevant steps in the corresponding embodiments will not be repeated here.

[0104] Those skilled in the art will appreciate that the schematic diagram is merely an example of the electronic device 10 and does not constitute a limitation on the electronic device 10. The electronic device 10 may be a bus-type structure or a star-type structure. The electronic device 10 may also include more or less other hardware or software than shown in the figure, or a different arrangement of components. For example, the electronic device 10 may also include input and output devices, network access devices, etc.

[0105] It should be noted that the electronic device 10 is only an example, and other existing or future electronic products that are suitable for the present application should also be included in the protection scope of the present application and included here by reference.

[0106] Among them, the memory 11 includes at least one type of computer-readable storage medium, and the computer-readable storage medium can be non-volatile or volatile. Computer-readable storage media include flash memory, mobile hard disk, multimedia card, card-type memory (such as SD memory, DX memory, etc.), magnetic memory, disk, optical disk, etc. In some embodiments, the memory 11 can be an internal storage unit of the electronic device 10, such as a mobile hard disk of the electronic device 10. In other embodiments, the memory 11 can also be an external storage device of the electronic device 10, such as a plug-in mobile hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the electronic device 10. The memory 11 can not only be used to store application software and various types of data installed in the electronic device 10, such as the code of an anti-frost control program of a cooling system, but also can be used to temporarily store data that has been output or is to be output.

[0107] In some embodiments, the processor 12 may be composed of an integrated circuit, for example, a single packaged integrated circuit, or a plurality of packaged integrated circuits with the same or different functions, including one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and a combination of various control chips. The processor 12 is the control core (Control Unit) of the electronic device 10, and uses various interfaces and lines to connect various components of the entire electronic device 10, and executes various functions and processes data of the electronic device 10 by running or executing programs or modules stored in the memory 11 (for example, executing an anti-frost control program for a cooling system, etc.), and calling data stored in the memory 11.

[0108] The processor 12 executes the operating system of the electronic device 10 and various installed applications. The processor 12 executes the application to implement the steps in the above-mentioned anti-frost control method of a cooling system, for example Figure 2 Steps shown.

[0109] Exemplarily, the computer program may be divided into one or more modules / units, one or more modules / units are stored in the memory 11, and executed by the processor 12 to complete the present application. One or more modules / units may be a series of computer-readable instruction segments capable of completing specific functions, and the instruction segments are used to describe the execution process of the computer program in the electronic device 10. For example, the computer program may be divided into a detection module 110, a determination module 120, and a control module 130.

[0110] The above-mentioned integrated unit implemented in the form of a software function module can be stored in a computer-readable storage medium. The above-mentioned software function module is stored in a storage medium, and includes a number of instructions for enabling a computer device (which can be a personal computer, a computer device, or a network device, etc.) or a processor to execute a part of an anti-frost control method for a cooling system in various embodiments of the present application.

[0111] If the module / unit integrated in the electronic device 10 is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also instruct the relevant hardware devices to complete through a computer program. The computer program can be stored in a computer-readable storage medium, and when the computer program is executed by the processor 12, the steps of the above-mentioned various method embodiments can be implemented.

[0112] The computer program includes computer program code, which may be in source code form, object code form, executable file or some intermediate form, etc. Computer readable media may include: any entity or device capable of carrying computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory and other memory, etc.

[0113] Furthermore, the computer-readable storage medium may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function, etc.; the data storage area may store data created according to the use of the blockchain node, etc.

[0114] The bus can be 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. Figure 5 Only one arrow is used in the figure, but it does not mean that there is only one bus or one type of bus. The bus is configured to realize the connection and communication between the memory 11 and at least one processor 12, etc.

[0115] An embodiment of the present application also provides a computer-readable storage medium (not shown), in which computer-readable instructions are stored. The computer-readable instructions are executed by the processor 12 in the electronic device 10 to implement an anti-frost control method for a cooling system in any of the above embodiments.

[0116] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules is only a logical function division, and there may be other division methods in actual implementation.

[0117] The modules described as separate components may or may not be physically separated, and the components shown as modules 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 solution of this embodiment.

[0118] In addition, each functional module in each embodiment of the present application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional modules.

[0119] In addition, it is obvious that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices stated in the specification can also be implemented by one unit or device through software or hardware. The words first, second, etc. are used to indicate names, and do not indicate any specific order.

[0120] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A method for controlling frost prevention in a cooling system, characterized in that: Applied to a vehicle, the cooling system comprises an evaporator and a cooling assembly, and the method comprises: Detecting whether there is a risk of frost on the cooling system according to environmental parameters of the vehicle and operating parameters of the cooling system; If there is a risk of frost in the cooling system, determining the demand parameter of the cooling component according to the real-time difference between the actual temperature of the evaporator and the target temperature; The cooling component is controlled according to the demand parameters of the cooling component.

2. The anti-frost control method for a cooling system according to claim 1, characterized in that: The cooling component includes a compressor, and the demand parameter of the cooling component includes the rotation speed of the compressor. The step of determining the demand parameter of the cooling component according to the real-time difference between the actual temperature of the evaporator and the target temperature includes: If the real-time difference is greater than a first preset temperature difference, determining that the compressor increases its speed; If the real-time difference is within a preset temperature difference range, it is determined that the compressor maintains the current speed, and the preset temperature difference range is greater than or equal to the second preset temperature difference and less than or equal to the first preset temperature difference; If the real-time difference is less than the second preset temperature difference, it is determined that the compressor reduces its speed.

3. The anti-frost control method for a cooling system according to claim 2, characterized in that: The cooling component further includes a fan, and the demand parameter of the cooling component further includes a rotation speed of the fan. The step of determining the demand parameter of the cooling component according to the real-time difference between the actual temperature of the evaporator and the target temperature further includes: If the compressor continues to reduce its speed until it reaches a minimum speed, and the real-time difference is still not within the preset temperature difference range, it is determined that the fan speed is reduced by a first preset value.

4. The anti-frost control method for a cooling system according to claim 3, characterized in that: The step of determining the demand parameter of the cooling component according to the real-time difference between the actual temperature of the evaporator and the target temperature also includes: If the fan speed is reduced by the first preset value and the real-time difference is still not within the preset temperature difference range after a preset time interval, it is determined that the fan speed is reduced by the first preset value again.

5. The anti-frost control method for a cooling system according to claim 4, characterized in that: The step of determining the demand parameter of the cooling component according to the real-time difference between the actual temperature of the evaporator and the target temperature also includes: If the real-time difference is within the preset temperature difference range, it is determined that the fan maintains the current rotation speed.

6. The anti-frost control method for a cooling system according to claim 4, characterized in that: The cooling component further includes an active air intake grille, and the demand parameter of the cooling component further includes the opening of the active air intake grille. The step of determining the demand parameter of the cooling component according to the real-time difference between the actual temperature of the evaporator and the target temperature further includes: If the real-time difference is still not within the preset temperature difference range after the rotation speed of the fan continues to decrease to zero, it is determined that the opening of the active air intake grille is reduced by a second preset value.

7. The anti-frost control method for a cooling system according to claim 6, characterized in that: The step of determining the demand parameter of the cooling component according to the real-time difference between the actual temperature of the evaporator and the target temperature also includes: If the opening of the active air intake grille is reduced by the second preset value and after a preset time interval, the real-time difference is still not within the preset temperature difference range, it is determined that the opening of the active air intake grille is reduced by the second preset value again.

8. The anti-frost control method for a cooling system according to claim 7, characterized in that: The step of determining the demand parameter of the cooling component according to the real-time difference between the actual temperature of the evaporator and the target temperature also includes: If the real-time difference is within the preset temperature difference range, it is determined that the active air intake grille maintains a current opening.

9. An anti-frost control device for a cooling system, characterized in that: A cooling system for a vehicle, the cooling system comprising an evaporator and a cooling assembly, the device comprising: a detection module, configured to detect whether the cooling system has a risk of frosting according to environmental parameters of the vehicle and operating parameters of the cooling system; a determination module, configured to determine a demand parameter of the cooling component according to a real-time difference between an actual temperature of the evaporator and a target temperature if there is a risk of frost in the cooling system; A control module is used to control the cooling component according to the demand parameters of the cooling component.

10. An electronic device, characterized in that: The electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the anti-frost control method for the cooling system as described in any one of claims 1 to 8.

11. A vehicle, characterized in that: The vehicle includes the electronic device of claim 10 and a cooling system, wherein the cooling system is communicatively connected to the electronic device.

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