Vehicle air conditioning system control method, device and equipment and storage medium

Abstract

The invention discloses a vehicle air conditioning system control method, device and equipment and a storage medium. The method comprises the steps that the environment temperature outside a cab, the temperature inside the cab and the set target temperature of the cab are obtained; according to the environment temperature, the temperature in the cab and the target temperature, the required refrigerating capacity of the cab is calculated; determining compressor power consumption corresponding to the required refrigerating capacity according to the required refrigerating capacity and a preset corresponding relation between refrigerating capacity and compressor power consumption; according to the compressor power consumption and the required refrigerating capacity, the target heat dissipating capacity needing to be supplied to the condenser from the outside is calculated; and according to the target heat dissipating capacity, the rotating speed of a fan acting on the condenser is determined. The fan is controlled to rotate at the rotating speed matched with the current cooling capacity requirement in the cab, and the technical problem that energy is obviously wasted due to the constant rotating speed of the fan in related technologies is effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle air-conditioning systems, and in particular to a vehicle air-conditioning system control method, device, equipment and storage medium. Background Art

[0002] The system performance components of the commercial vehicle air-conditioning system (such as condensers and compressors) are operated at maximum performance to meet extreme operating conditions. For example, for condenser heat dissipation, a constant fan speed will be given under different vehicle speeds and idling conditions.

[0003] However, when the above solution is operated under conditions where the cab cooling demand is low, the cooling capacity brought by the set fan speed far exceeds the cooling capacity required for the operation of the air-conditioning system, which will cause system energy waste. Therefore, further improvement is needed. Summary of the invention

[0004] The present application provides a vehicle air-conditioning system control method, device, equipment and storage medium, which can solve the technical problems existing in the above-mentioned prior art.

[0005] In a first aspect, an embodiment of the present application provides a vehicle air conditioning system control method, which adopts the following technical solution:

[0006] A vehicle air conditioning system control method, the vehicle air conditioning system control method comprising:

[0007] Obtain the ambient temperature outside the cab, the temperature inside the cab, and the set target temperature of the cab;

[0008] Calculating the required cooling capacity of the cab according to the ambient temperature, the cab temperature and the target temperature;

[0009] Determining the power consumption of the compressor corresponding to the required cooling capacity according to the required cooling capacity and the corresponding relationship between the preset cooling capacity and the power consumption of the compressor;

[0010] Calculating a target heat dissipation amount that needs to be provided to the condenser from the outside according to the power consumption of the compressor and the required cooling capacity;

[0011] The rotation speed of the fan acting on the condenser is determined according to the target heat dissipation.

[0012] In combination with the first aspect, in one implementation, the calculating the required cooling capacity of the cab according to the ambient temperature, the cab interior temperature and the target temperature comprises the following steps:

[0013] Determining a first cooling capacity according to the target temperature and a preset reference temperature;

[0014] determining a second cooling capacity according to the target temperature and the temperature in the cab;

[0015] Determining external temperature compensation according to the ambient temperature;

[0016] The required cooling capacity is determined based on at least the first cooling capacity, the second cooling capacity, and the external temperature compensation.

[0017] In combination with the first aspect, in one implementation, before determining the required cooling capacity at least according to the first cooling capacity, the second cooling capacity and the external temperature compensation, the following steps are included:

[0018] Obtaining sunlight intensity collected from the vehicle surface, and determining sunlight compensation according to the sunlight intensity;

[0019] In the step of determining the required cooling capacity at least based on the first cooling capacity, the second cooling capacity and the external temperature compensation,

[0020] The required cooling capacity is determined according to the first cooling capacity, the second cooling capacity, the external temperature compensation, and the sunlight compensation.

[0021] In combination with the first aspect, in one implementation, determining the rotation speed of the fan acting on the condenser according to the target heat dissipation comprises the following steps:

[0022] Determine the basic heat dissipation of the condenser caused by the vehicle speed according to the ambient temperature and the vehicle speed;

[0023] Determining the fan heat dissipation required to be provided by the fan acting on the condenser according to the target heat dissipation and the basic heat dissipation;

[0024] The rotation speed of the fan is determined according to the heat dissipation of the fan.

[0025] In combination with the first aspect, in one implementation, after determining the rotation speed of the fan acting on the condenser according to the target heat dissipation, the following steps are included:

[0026] Obtain the refrigerant liquid pressure in the downstream pipeline of the condenser;

[0027] Determining whether the refrigerant liquid pressure is greater than a preset first pressure threshold;

[0028] If it is greater, the speed of the fan is increased within a preset ratio range.

[0029] In combination with the first aspect, in one implementation, in increasing the speed of the fan within a preset ratio range,

[0030] determining an increase ratio within the preset ratio range according to a difference between the refrigerant liquid pressure and the first pressure threshold;

[0031] The rotation speed of the fan is increased according to the increase ratio.

[0032] In combination with the first aspect, in one embodiment, after obtaining the refrigerant liquid pressure in the downstream pipeline of the condenser, the following steps are also included:

[0033] If the refrigerant pressure is greater than a preset second pressure threshold and the fan speed reaches its maximum speed, a system fault signal is output; wherein the second pressure threshold is greater than the first pressure threshold.

[0034] In a second aspect, the embodiment of the present application provides a vehicle air conditioning system control device, which adopts the following technical solution:

[0035] A vehicle air conditioning system control device, the vehicle air conditioning system control device comprising:

[0036] An acquisition module, configured to acquire an ambient temperature outside the cab, a temperature inside the cab, and a set target temperature of the cab;

[0037] A calculation module is configured to calculate the required cooling capacity of the cab according to the ambient temperature, the temperature in the cab and the target temperature; determine the power consumption of the compressor corresponding to the required cooling capacity according to the required cooling capacity and the corresponding relationship between the preset cooling capacity and the power consumption of the compressor; calculate the target heat dissipation that needs to be provided to the condenser from the outside according to the compressor power consumption and the required cooling capacity; and determine the speed of the fan acting on the condenser according to the target heat dissipation.

[0038] In a third aspect, the embodiment of the present application provides a vehicle air conditioning system control device, which adopts the following technical solution:

[0039] A vehicle air-conditioning system control device, comprising a processor, a memory, and a vehicle air-conditioning system control program stored in the memory and executable by the processor, wherein when the vehicle air-conditioning system control program is executed by the processor, the steps of the vehicle air-conditioning system control method as described above are implemented.

[0040] In a fourth aspect, an embodiment of the present application provides a storage medium, which adopts the following technical solution:

[0041] A storage medium stores a vehicle air conditioning system control program, wherein when the vehicle air conditioning system control program is executed by a processor, the steps of the vehicle air conditioning system control method as described above are implemented.

[0042] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0043] By combining the current ambient temperature outside the cab, the temperature inside the cab and the set target temperature, the target heat dissipation that needs to be provided to the condenser from the outside is calculated, and the speed of the fan acting on the condenser is further obtained using the target heat dissipation calculated in real time, so as to control the fan rotation at a speed that matches the current cooling demand in the cab, effectively reducing the technical problem of obvious energy waste caused by constant fan speed in related technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a flow chart of an embodiment of a vehicle air conditioning system control method of the present application;

[0045] Figure 2 This is a functional module diagram of an embodiment of a vehicle air conditioning system control device of the present application;

[0046] Figure 3 This is a schematic diagram of the hardware structure of the vehicle air-conditioning system control device involved in the embodiment of the present application. DETAILED DESCRIPTION

[0047] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only 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 creative work are within the scope of protection of this application.

[0048] In the related art, the system performance components (such as condensers and compressors) of commercial vehicle air conditioning systems are operated at maximum performance to meet the extreme operating conditions. For example, for condenser heat dissipation, a constant fan speed will be given under different vehicle speeds and idling conditions. However, when the above solution is operated under low cab cooling demand conditions, the cooling capacity brought by the set fan speed far exceeds the cooling capacity required for the operation of the air conditioning system, which will cause system energy waste. Therefore, further improvement is needed.

[0049] Based on the above problems, the present application provides a vehicle air-conditioning system control method. The key point of the invention is that by combining the current ambient temperature outside the cab, the temperature inside the cab and the set target temperature, the target heat dissipation that needs to be provided to the condenser from the outside is obtained after calculation, and the target heat dissipation calculated in real time is used to further obtain the speed of the fan acting on the condenser, so as to control the fan rotation at a speed that matches the current cooling demand in the cab, effectively reducing the technical problem in the related technology that the constant fan speed leads to obvious energy waste.

[0050] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0051] In a first aspect, an embodiment of the present application provides a vehicle air-conditioning system control method.

[0052] In one embodiment, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the vehicle air conditioning system control method of the present application. Figure 1 As shown, the vehicle air conditioning system control method includes:

[0053] S100, obtaining the ambient temperature outside the cab, the temperature inside the cab, and the set target temperature of the cab;

[0054] Specifically, the ambient temperature outside the cab and the temperature inside the cab are detected by temperature detection devices arranged outside and inside the cab of the vehicle, respectively. The set target temperature is the temperature set by the relevant personnel for the vehicle air conditioning system, or the temperature automatically set by the vehicle air conditioning system after startup.

[0055] S200, calculating the required cooling capacity of the cab according to the ambient temperature, the cab temperature and the target temperature;

[0056] Specifically, in the process of calculating the required cooling capacity of the cab, step S200 is implemented by combining the ambient temperature outside the cab to calculate the required cooling capacity that meets the current environment of the vehicle, thereby reducing the energy consumption of the air-conditioning system during operation.

[0057] S300, determining the compressor power consumption corresponding to the required cooling capacity according to the required cooling capacity and the corresponding relationship between the preset cooling capacity and the compressor power consumption;

[0058] Specifically, by pre-establishing a corresponding relationship between the cooling capacity and the power consumption of the compressor, that is, a compressor performance table, the power consumption of the compressor when the compressor is in an operating state under the same required cooling capacity can be determined.

[0059] S400, calculating a target heat dissipation amount that needs to be provided to the condenser from the outside according to the power consumption of the compressor and the required cooling capacity;

[0060] Specifically, through steps S300 and S400, the required cooling capacity is matched to the appropriate compressor power consumption. After the compressor power consumption is determined, the cooling capacity that is still lacking in addition to the cooling capacity brought by the compressor and needs to be provided externally is calculated, that is, the target heat dissipation that needs to be provided externally to the condenser, and this part of the heat dissipation at least includes the cooling capacity that needs to be provided by the fan acting on the condenser.

[0061] S500: Determine a rotation speed of a fan acting on a condenser according to the target heat dissipation.

[0062] Finally, step S500 further converts the target heat dissipation calculation into the speed of the condenser fan, so that the fan rotation is controlled at a speed that matches the current cooling demand in the cab, effectively reducing the technical problem of constant fan speed in related technologies that leads to obvious energy waste.

[0063] Furthermore, in some embodiments, step S200 includes the following steps:

[0064] S210, determining a first cooling capacity according to the target temperature and a preset reference temperature;

[0065] Among them, the vehicle air-conditioning system's ability to control heating and cooling varies with changes in temperature, and is specifically related to a preset reference temperature of the vehicle air-conditioning system. Taking 22 degrees as a reference, when the target temperature is higher than the reference temperature, the required cooling capacity will increase significantly as the difference increases. In this embodiment, the first cooling capacity related to this will be determined based on the target temperature and the preset reference temperature.

[0066] S220, determining a second cooling capacity according to the target temperature and the temperature in the cab;

[0067] At the same time, the required cooling capacity is also related to the difference between the target temperature and the current temperature in the cab. When the difference between the two is large, the required cooling capacity will also be significantly increased. In this embodiment, the second cooling capacity related thereto is determined based on the target temperature and the temperature in the cab.

[0068] S230, determining external temperature compensation according to the ambient temperature;

[0069] In addition, the current external ambient temperature will also affect the temperature change in the cab. For example, when the ambient temperature is high, it will have a negative impact on the cooling process in the cab. Therefore, it is necessary to determine the heat dissipation effect caused by the external ambient temperature, that is, external temperature compensation.

[0070] S250. Determine the required cooling capacity at least based on the first cooling capacity, the second cooling capacity, and the external temperature compensation.

[0071] Finally, the accuracy of the determined required cooling capacity is further improved by implementing cooling capacity calculation and external temperature compensation based on multiple aspects.

[0072] Further, in one embodiment, before step S250, determining the required cooling capacity at least according to the first cooling capacity, the second cooling capacity and the external temperature compensation, the following steps are included:

[0073] S240, obtaining sunlight intensity collected from the vehicle surface, and determining sunlight compensation according to the sunlight intensity;

[0074] And during the execution of step S250, the required cooling capacity is determined specifically according to the first cooling capacity, the second cooling capacity, the external temperature compensation and the sunlight compensation.

[0075] Among them, since the sunlight intensity in the current environment is different and will also affect the temperature change in the cab, in this embodiment, the impact of the sunlight intensity in the current environment on the temperature change in the cab is incorporated into the calculation of the required cooling capacity, thereby further improving the accuracy of the calculation of the required cooling capacity, and ultimately reducing the additional energy consumption in subsequent calculations and controls.

[0076] Specifically, the specific algorithms of the first cooling capacity, the second cooling capacity, the external temperature compensation and the sunshine compensation in this embodiment are as follows:

[0077] Qo=K1*(Tset–22)+K2*(Tset–Tin)-K3+K4+OFFSET

[0078] Wherein, Tset: set temperature;

[0079] Tin: indoor temperature;

[0080] K1: Set the temperature deviation gain, and control the level of heating and cooling based on the setting of 22°C;

[0081] K2: Indoor temperature deviation gain, controls the temperature rise and fall to the set temperature level;

[0082] K3: External temperature compensation offset, different external temperature compensation is performed at different external temperatures;

[0083] OFFSET: fixed constant, the smaller it is, the stronger the cooling performance is; the larger it is, the stronger the heating capacity is;

[0084] K4: Sunlight compensation offset, different sunlight compensation for different lighting conditions

[0085] Further, in some embodiments, the step S500, determining the rotation speed of the fan acting on the condenser according to the target heat dissipation, includes the following steps:

[0086] S510, determining a basic heat dissipation of a condenser caused by the vehicle speed according to the ambient temperature and the vehicle speed;

[0087] Among them, since when the vehicle is in a driving state, a part of the cooling capacity generated by movement will be brought to the condenser, so this part of the basic cooling capacity needs to be determined before determining the cooling capacity that the fan needs to provide.

[0088] S520, determining a fan heat dissipation required to be provided by a fan acting on a condenser according to the target heat dissipation and the basic heat dissipation;

[0089] After the basic heat dissipation is determined, the target heat dissipation can be used to determine the minimum fan heat dissipation that the condenser fan should provide. After the fan heat dissipation is determined, the fan speed calculation can be performed.

[0090] S530: Determine a rotation speed of the fan according to the heat dissipation of the fan.

[0091] In addition, since the condenser will cause excessive internal pressure of the system after being blocked by dirt, when executing the cooling process of the same target temperature, the actual cooling capacity required will be significantly greater than the required cooling capacity calculated under the normal pressure state, and the fan speed obtained by normal calculation will not meet the operation of the vehicle air conditioning system in this state. Therefore, further, in one embodiment, after the step S500, according to the target heat dissipation, determines the speed of the fan acting on the condenser, the following steps are included:

[0092] S600, obtaining the refrigerant liquid pressure in the downstream pipeline of the condenser;

[0093] S610, determining whether the refrigerant liquid pressure is greater than a preset first pressure threshold;

[0094] S620: If it is greater than, increase the speed of the fan within a preset ratio.

[0095] In this embodiment, a medium pressure detection control is added inside the vehicle air conditioning system to prevent abnormal system pressure. The method is as follows:

[0096] The three-state pressure switch detects the internal operating pressure of the system, and adds a medium-pressure switch signal based on the two-state pressure switch. If the system pressure exceeds the preset first pressure threshold, for example, 1.52Mpa, the medium-pressure signal is turned on and a fan speed-up request is issued. The fan speed is n*K6 calculated in step S500, and K6 ranges from 1 to 2. The fan speed is increased within a certain range to cope with the current increase in internal system pressure.

[0097] Specifically, when determining the value of K6, in some embodiments, the increase ratio is determined within the preset ratio range according to the difference between the refrigerant liquid pressure and the first pressure threshold, and the speed of the fan is increased according to the increase ratio. For example, in this embodiment, the value of K6 is linearly correlated with the difference between the refrigerant liquid pressure and the first pressure threshold within the preset ratio range, and the specific value of K6 can be obtained according to the difference between the refrigerant liquid pressure and the first pressure threshold.

[0098] In addition, further, in some embodiments, after obtaining the refrigerant liquid pressure in the downstream pipeline of the condenser, the following steps are also included:

[0099] S630: If the refrigerant pressure is greater than a preset second pressure threshold and the fan speed reaches its maximum speed, output a system fault signal; wherein the second pressure threshold is greater than the first pressure threshold.

[0100] Specifically, if the fan speed has been adjusted to the maximum and the system high-pressure switch is turned on, that is, the refrigerant pressure is greater than the preset second pressure threshold, this indicates that there is a related fault of poor heat dissipation inside the vehicle's air-conditioning system, resulting in the failure to bring about heat exchange effect, and relevant personnel need to be prompted to handle it.

[0101] This arrangement enables timely identification and fault prompting when there is a related fault in the vehicle air-conditioning system, avoiding continued operation when a fault occurs, resulting in greater energy waste.

[0102] In a second aspect, an embodiment of the present application also provides a vehicle air-conditioning system control device.

[0103] In one embodiment, referring to Figure 2 , Figure 2 This is a functional module diagram of an embodiment of the vehicle air conditioning system control device of the present application. Figure 2 As shown, the vehicle air conditioning system control device includes:

[0104] An acquisition module, configured to acquire an ambient temperature outside the cab, a temperature inside the cab, and a set target temperature of the cab;

[0105] A calculation module is configured to calculate the required cooling capacity of the cab according to the ambient temperature, the temperature in the cab and the target temperature; determine the power consumption of the compressor corresponding to the required cooling capacity according to the required cooling capacity and the corresponding relationship between the preset cooling capacity and the power consumption of the compressor; calculate the target heat dissipation that needs to be provided to the condenser from the outside according to the compressor power consumption and the required cooling capacity; and determine the speed of the fan acting on the condenser according to the target heat dissipation.

[0106] Furthermore, in one embodiment, when the calculation module calculates the required cooling capacity of the cab according to the ambient temperature, the cab interior temperature and the target temperature, the calculation module comprises the following steps:

[0107] Determining a first cooling capacity according to the target temperature and a preset reference temperature;

[0108] determining a second cooling capacity according to the target temperature and the temperature in the cab;

[0109] Determining external temperature compensation according to the ambient temperature;

[0110] The required cooling capacity is determined based on at least the first cooling capacity, the second cooling capacity, and the external temperature compensation.

[0111] Furthermore, in one embodiment, before the calculation module determines the required cooling capacity based on at least the first cooling capacity, the second cooling capacity and the external temperature compensation, the calculation module comprises the following steps:

[0112] Obtaining sunlight intensity collected from the vehicle surface, and determining sunlight compensation according to the sunlight intensity;

[0113] In determining the required cooling capacity at least based on the first cooling capacity, the second cooling capacity and the external temperature compensation,

[0114] The required cooling capacity is determined according to the first cooling capacity, the second cooling capacity, the external temperature compensation, and the sunlight compensation.

[0115] Furthermore, in one embodiment, the calculation module determines the rotation speed of the fan acting on the condenser according to the target heat dissipation, including the following steps:

[0116] Determine the basic heat dissipation of the condenser caused by the vehicle speed according to the ambient temperature and the vehicle speed;

[0117] Determining the fan heat dissipation required to be provided by the fan acting on the condenser according to the target heat dissipation and the basic heat dissipation;

[0118] The rotation speed of the fan is determined according to the heat dissipation of the fan.

[0119] Furthermore, in one embodiment, after the calculation module determines the rotation speed of the fan acting on the condenser according to the target heat dissipation, the calculation module comprises the following steps:

[0120] Obtain the refrigerant liquid pressure in the downstream pipeline of the condenser;

[0121] Determining whether the refrigerant liquid pressure is greater than a preset first pressure threshold;

[0122] If it is greater, the speed of the fan is increased within a preset ratio range.

[0123] Furthermore, in one embodiment, the calculation module increases the speed of the fan within a preset ratio range.

[0124] determining an increase ratio within the preset ratio range according to a difference between the refrigerant liquid pressure and the first pressure threshold;

[0125] The rotation speed of the fan is increased according to the increase ratio.

[0126] Furthermore, in one embodiment, after obtaining the refrigerant liquid pressure in the downstream pipeline of the condenser, the calculation module further includes the following steps:

[0127] If the refrigerant pressure is greater than a preset second pressure threshold and the fan speed reaches its maximum speed, a system fault signal is output; wherein the second pressure threshold is greater than the first pressure threshold.

[0128] Among them, the functional implementation of each module in the above-mentioned vehicle air-conditioning system control device corresponds to the various steps in the above-mentioned vehicle air-conditioning system control method embodiment, and its functions and implementation processes are no longer repeated here.

[0129] In a third aspect, an embodiment of the present application provides a vehicle air-conditioning system control device, which may be a personal computer (PC), a laptop computer, a server, or other device with data processing capabilities.

[0130] Reference Figure 3 , Figure 3 Schematic diagram of the hardware structure of the vehicle air conditioning system control device involved in the embodiment of the present application. In the embodiment of the present application, the vehicle air conditioning system control device may include a processor, a memory, a communication interface and a communication bus.

[0131] The communication bus may be of any type and is used to interconnect the processor, the memory, and the communication interface.

[0132] The communication interface includes input / output (I / O) interface, physical interface and logical interface, etc., which are used to realize the interconnection of devices inside the vehicle air conditioning system control device, and the interface used to realize the interconnection between the vehicle air conditioning system control device and other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, a fiber optic interface, an ATM interface, etc.; the user device can be a display (Display), a keyboard (Keyboard), etc.

[0133] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0134] The processor may be a general-purpose processor, and the general-purpose processor may call the vehicle air conditioning system control program stored in the memory and execute the vehicle air conditioning system control method provided in the embodiment of the present application. For example, the general-purpose processor may be a central processing unit (CPU). The method executed when the vehicle air conditioning system control program is called may refer to the various embodiments of the vehicle air conditioning system control method of the present application, and will not be repeated here.

[0135] Those skilled in the art will understand that Figure 3 The hardware structure shown in the figure does not constitute a limitation on the present application, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0136] In a fourth aspect, an embodiment of the present application also provides a storage medium.

[0137] The storage medium of the present application stores a vehicle air-conditioning system control program, wherein when the vehicle air-conditioning system control program is executed by a processor, the steps of the vehicle air-conditioning system control method as described above are implemented.

[0138] Among them, the method implemented when the vehicle air-conditioning system control program is executed can refer to the various embodiments of the vehicle air-conditioning system control method of the present application, and will not be repeated here.

[0139] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.

[0140] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit "first", "second" and "third" to different types.

[0141] In the description of the embodiments of the present application, "exemplary", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary", "for example" or "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 "exemplary", "for example" or "for example" is intended to present related concepts in a specific way.

[0142] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; the “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.

[0143] In some processes described in the embodiments of the present application, multiple operations or steps that appear in a specific order are included, but it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present application or in parallel, and the sequence number of the operation is only used to distinguish the different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed in sequence or in parallel, and these operations or steps may be combined.

[0144] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, disk, CD) as described above, and includes a number of instructions for a terminal device to execute the methods described in each embodiment of the present application.

[0145] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A vehicle air conditioning system control method, characterized in that: The method comprises: Obtain the ambient temperature outside the cab, the temperature inside the cab, and the set target temperature of the cab; Calculating the required cooling capacity of the cab according to the ambient temperature, the cab temperature and the target temperature; Determining the power consumption of the compressor corresponding to the required cooling capacity according to the required cooling capacity and the corresponding relationship between the preset cooling capacity and the power consumption of the compressor; Calculating a target heat dissipation amount that needs to be provided to the condenser from the outside according to the power consumption of the compressor and the required cooling capacity; The rotation speed of the fan acting on the condenser is determined according to the target heat dissipation.

2. The vehicle air conditioning system control method according to claim 1, characterized in that: The step of calculating the required cooling capacity of the cab according to the ambient temperature, the cab temperature and the target temperature comprises the following steps: Determining a first cooling capacity according to the target temperature and a preset reference temperature; determining a second cooling capacity according to the target temperature and the temperature in the cab; Determining external temperature compensation according to the ambient temperature; The required cooling capacity is determined based on at least the first cooling capacity, the second cooling capacity, and the external temperature compensation.

3. The vehicle air conditioning system control method according to claim 2, characterized in that: Before determining the required cooling capacity at least according to the first cooling capacity, the second cooling capacity and the external temperature compensation, the following steps are included: Obtaining sunlight intensity collected from the vehicle surface, and determining sunlight compensation according to the sunlight intensity; In the step of determining the required cooling capacity at least based on the first cooling capacity, the second cooling capacity and the external temperature compensation, The required cooling capacity is determined according to the first cooling capacity, the second cooling capacity, the external temperature compensation, and the sunlight compensation.

4. The vehicle air conditioning system control method according to claim 1, characterized in that: Determining the rotation speed of the fan acting on the condenser according to the target heat dissipation comprises the following steps: Determine the basic heat dissipation of the condenser caused by the vehicle speed according to the ambient temperature and the vehicle speed; Determining the fan heat dissipation required to be provided by the fan acting on the condenser according to the target heat dissipation and the basic heat dissipation; The rotation speed of the fan is determined according to the heat dissipation of the fan.

5. The vehicle air conditioning system control method according to claim 1, characterized in that: After determining the rotation speed of the fan acting on the condenser according to the target heat dissipation, the following steps are included: Obtain the refrigerant liquid pressure in the downstream pipeline of the condenser; Determining whether the refrigerant liquid pressure is greater than a preset first pressure threshold; If it is greater, the speed of the fan is increased within a preset ratio range.

6. The vehicle air conditioning system control method according to claim 5, characterized in that: In the step of increasing the speed of the fan within a preset ratio range, determining an increase ratio within the preset ratio range according to a difference between the refrigerant liquid pressure and the first pressure threshold; The rotation speed of the fan is increased according to the increase ratio.

7. The vehicle air conditioning system control method according to claim 5, characterized in that: After obtaining the refrigerant liquid pressure in the downstream pipeline of the condenser, the following steps are also included: If the refrigerant pressure is greater than a preset second pressure threshold and the fan speed reaches its maximum speed, a system fault signal is output; wherein the second pressure threshold is greater than the first pressure threshold.

8. A vehicle air conditioning system control device, characterized in that: The vehicle air conditioning system control device comprises: An acquisition module, configured to acquire an ambient temperature outside the cab, a temperature inside the cab, and a set target temperature of the cab; A calculation module is configured to calculate the required cooling capacity of the cab according to the ambient temperature, the temperature in the cab and the target temperature; determine the power consumption of the compressor corresponding to the required cooling capacity according to the required cooling capacity and the corresponding relationship between the preset cooling capacity and the power consumption of the compressor; calculate the target heat dissipation that needs to be provided to the condenser from the outside according to the compressor power consumption and the required cooling capacity; and determine the speed of the fan acting on the condenser according to the target heat dissipation.

9. A vehicle air conditioning system control device, characterized in that: The vehicle air-conditioning system control device includes a processor, a memory, and a vehicle air-conditioning system control program stored in the memory and executable by the processor, wherein when the vehicle air-conditioning system control program is executed by the processor, the steps of the vehicle air-conditioning system control method as described in any one of claims 1 to 7 are implemented.

10. A storage medium, characterized in that: The storage medium stores a vehicle air-conditioning system control program, wherein when the vehicle air-conditioning system control program is executed by the processor, the steps of the vehicle air-conditioning system control method according to any one of claims 1 to 7 are implemented.

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