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

Abstract

A vehicle air conditioning system control method, device, equipment, and storage medium are disclosed. The method comprises obtaining the ambient temperature outside the cab, the temperature inside the cab, and a set target cab temperature; calculating the required cooling capacity of the cab based on the ambient temperature, cab temperature, and target temperature; determining the compressor power consumption corresponding to the required cooling capacity based on the required cooling capacity and the correspondence between the preset cooling capacity and compressor power consumption; calculating the target heat dissipation required to be provided to the condenser based on the compressor power consumption and the required cooling capacity; and determining the speed of the fan acting on the condenser based on the target heat dissipation. This method controls the fan rotation at a speed that matches the current cab cooling demand, effectively alleviating the technical problem in related technologies of significant energy waste caused by constant fan speed.

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 commercial vehicle air-conditioning systems (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 with low cab cooling demand, 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 solutions:

[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 embodiment, calculating the required cooling capacity of the cab according to the ambient temperature, the cab interior temperature, and the target temperature includes 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 an 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 conjunction with the first aspect, in one embodiment, before determining the required cooling capacity based at least on 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 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 embodiment, determining the rotation speed of the fan acting on the condenser according to the target heat dissipation includes the following steps:

[0022] Determining a basic heat dissipation capacity of the condenser at the vehicle speed according to the ambient temperature and the vehicle speed;

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

[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 embodiment, 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 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 proportional range.

[0029] In combination with the first aspect, in one embodiment, in increasing the speed of the fan within a preset proportional 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 fan speed 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 further 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, an 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 based on the ambient temperature, the cab interior temperature and the target temperature; determine the compressor power consumption corresponding to the required cooling capacity based on the required cooling capacity and the correspondence between the preset cooling capacity and the compressor power consumption; calculate the target heat dissipation that needs to be provided to the condenser from the outside based on the compressor power consumption and the required cooling capacity; and determine the speed of the fan acting on the condenser based on the target heat dissipation.

[0038] In a third aspect, an 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 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 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 described above are implemented.

[0042] The beneficial effects of the technical solutions 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 then 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 present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, 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 prior art, commercial vehicle air conditioning system components (such as condensers and compressors) are operated at maximum performance to meet extreme operating conditions. For example, for condenser cooling, a constant fan speed is maintained at various vehicle speeds and idling conditions. However, when operating under low cab cooling demand, the cooling capacity generated by the set fan speed far exceeds the required cooling capacity of the air conditioning system, resulting in energy waste. Therefore, further improvements are 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 then 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 this application clearer, the implementation methods of this application will be further described in detail below with reference to 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 this 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 cab temperature inside the cab are detected by temperature detection devices installed 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 a required cooling capacity of the cab according to the ambient temperature, the cab temperature, and the target temperature;

[0056] Specifically, step S200 is used to calculate the required cooling capacity of the cab by combining the ambient temperature outside the cab, thereby obtaining the required cooling capacity that meets the current vehicle environment and 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 a preset correspondence between the cooling capacity and the compressor power consumption;

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

[0059] S400, calculating a target heat dissipation capacity that needs to be provided to the condenser from 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 with the appropriate compressor power consumption. After the compressor power consumption is determined, the cooling capacity that is still missing from 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 to the condenser from the outside, 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 the rotation speed of the fan acting on the 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 obvious energy waste caused by constant fan speed in related technologies.

[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 temperature changes, and is specifically related to a preset reference temperature of the vehicle air conditioning system. Taking 22 degrees as the benchmark, when the target temperature is higher than the benchmark 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 cabin temperature. 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 cabin temperature.

[0068] S230, determining an 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 brought by the external ambient temperature, that is, external temperature compensation.

[0070] S250: Determine the required cooling capacity based at least 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 calculating the cooling capacity and compensating for the external temperature in various aspects.

[0072] Furthermore, in one embodiment, before step S250, determining the required cooling capacity based at least on 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] 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 for the first cooling capacity, the second cooling capacity, the external temperature compensation, and the sunlight 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℃;

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

[0086] S510: Determine a basic heat dissipation capacity of a condenser at the vehicle speed based on the ambient temperature and the vehicle speed;

[0087] Among them, since a part of the cooling capacity generated by movement will be brought to the condenser when the vehicle is in a driving state, it is necessary to determine this part of the basic heat dissipation before determining the heat dissipation required to be provided by the fan.

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

[0089] After determining the base heat dissipation, the target heat dissipation can be used to determine the minimum heat dissipation that the condenser fan should provide. After determining the fan heat dissipation, the fan speed can be calculated.

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

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

[0092] S600, obtaining the refrigerant 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 range.

[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 system's internal operating pressure and adds a medium-pressure switch signal to the two-state pressure switch. If the system pressure exceeds a preset first pressure threshold, for example, 1.52 MPa, the medium-pressure signal turns on, signaling a fan speed increase. The fan speed is calculated in step S500 as n*K6, where K6 ranges from 1 to 2. This increases the fan speed within a certain range to accommodate rising system pressure.

[0097] Specifically, when determining the value of K6, in some embodiments, an increase ratio is determined within the preset proportional range based on the difference between the refrigerant liquid pressure and the first pressure threshold, and the fan speed is increased based on 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 proportional range, and the specific value of K6 can be determined based on the difference between the refrigerant liquid pressure and the first pressure threshold.

[0098] Furthermore, in some embodiments, after obtaining the refrigerant liquid pressure in the downstream pipe of the condenser, the following steps are further 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 air-conditioning system, resulting in the inability to achieve 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 during the fault, which causes 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 based on the ambient temperature, the cab interior temperature and the target temperature; determine the compressor power consumption corresponding to the required cooling capacity based on the required cooling capacity and the correspondence between the preset cooling capacity and the compressor power consumption; calculate the target heat dissipation that needs to be provided to the condenser from the outside based on the compressor power consumption and the required cooling capacity; and determine the speed of the fan acting on the condenser based on 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 following steps are included:

[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 an 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 includes 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] Determining a basic heat dissipation capacity of the condenser at the vehicle speed according to the ambient temperature and the vehicle speed;

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

[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 includes the following steps:

[0120] Obtain the refrigerant 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 proportional 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 fan speed 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 their 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 FIG1 is a 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, memory, and communication interface.

[0132] Communication interfaces include input / output (I / O) interfaces, physical interfaces, and logical interfaces, used to interconnect components within the vehicle air conditioning system control device, as well as interfaces used to interconnect the vehicle air conditioning system control device with other devices (such as other computing devices or user devices). Physical interfaces can include Ethernet, fiber optic, and ATM interfaces; user devices can include displays and keyboards.

[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 that can call a vehicle air conditioning system control program stored in a memory and execute the vehicle air conditioning system control method provided in the embodiments 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 can be referred to in the various embodiments of the vehicle air conditioning system control method of the present application and will not be further described here.

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

[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 for description only 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 the "first", "second" and "third" to different types.

[0141] In the description of the embodiments of this application, the words "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 this application should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary," "for example," or "for example" is intended to present the relevant concepts in a concrete manner.

[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; “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 are included that appear in a specific order. However, it should be understood that these operations or steps may not be performed in the order in which they appear in the embodiments of the present application or may be performed in parallel. The sequence numbers of the operations are only used to distinguish between different operations, and the sequence numbers themselves do not represent any order of execution. In addition, these processes may include more or fewer operations, and these operations or steps may be performed 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 the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, 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, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling 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 do not 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; determining a rotation speed of a fan acting on the condenser according to the target heat dissipation; 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 an 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.

2. The vehicle air conditioning system control method according to claim 1, wherein: Before determining the required cooling capacity based at least on 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 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.

3. The vehicle air conditioning system control method according to claim 1, wherein: Determining the rotational speed of the fan acting on the condenser according to the target heat dissipation comprises the following steps: Determining a basic heat dissipation capacity of the condenser at the vehicle speed according to the ambient temperature and the vehicle speed; determining a fan heat dissipation capacity required to be provided by a fan acting on the condenser according to the target heat dissipation capacity and the basic heat dissipation capacity; The rotation speed of the fan is determined according to the heat dissipation of the fan.

4. The vehicle air conditioning system control method according to claim 1, wherein: 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 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 proportional range.

5. The vehicle air conditioning system control method according to claim 4, wherein: 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 fan speed is increased according to the increase ratio.

6. The vehicle air conditioning system control method according to claim 4, wherein: 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.

7. A vehicle air conditioning system control device, characterized in that: The vehicle air conditioning system control device includes: 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 configured to calculate a required cooling capacity of the cab based on the ambient temperature, the cab interior temperature, and the target temperature; determine a compressor power consumption corresponding to the required cooling capacity based on the required cooling capacity and a predetermined correspondence between the cooling capacity and the compressor power consumption; calculate a target heat dissipation required to be provided to the condenser from the outside based on the compressor power consumption and the required cooling capacity; and determine a rotation speed of a fan acting on the condenser based on the target heat dissipation; When the calculation module calculates the required cooling capacity of the cab according to the ambient temperature, the cab temperature, and the target temperature, the calculation module includes 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 an 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.

8. 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 on 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 according to any one of claims 1 to 6 are implemented.

9. 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 6 are implemented.

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