A compressor feedforward rotating speed calculation method and device based on a heat pump system

Abstract

The embodiment of the application provides a kind of compressor feedforward rotating speed calculation method and device based on heat pump system, it is related to heat management technical field.The method includes using air parameter to calculate the air side refrigeration load of passenger cabin;Based on the air side refrigeration load, the refrigerant side load is converted;Based on the refrigerant side load, the actual rotating speed of compressor is calculated.The method uses air side refrigeration load to determine refrigerant side load, and the actual rotating speed of compressor is calculated using refrigerant side load, and the calculation result is more accurate, without calibration experiment, and not limited by compressor displacement and the use vehicle, solve the problem that existing method needs a large number of calibration experiments and is limited by compressor displacement and the use vehicle.

Description

Technical Field

[0001] This application relates to the field of thermal management technology, and more specifically, to a method and apparatus for calculating the feedforward speed of a compressor based on a heat pump system. Background Technology

[0002] Currently, most compressors in the industry use feedforward control + feedback control (PI). The calculation of the compressor feedforward speed mainly involves first calculating the air-side load, and then obtaining the lookup table relationship between the air-side load and the compressor feedforward speed through bench calibration.

[0003] Before obtaining the compressor feedforward speed by looking up the air-side load table, a large number of calibration experiments are usually required to determine the table lookup relationship between the air-side load and the feedforward speed. Furthermore, the compressor displacement is not considered when using the table lookup for feedforward calculation. If the same model uses two compressors with different displacements or the algorithm is ported to a new model with a different displacement, the feedforward speed still needs to be recalibrated. Summary of the Invention

[0004] The purpose of this application is to provide a method and apparatus for calculating the feedforward speed of a compressor based on a heat pump system. The method uses the air-side cooling load to determine the refrigerant-side load and uses the refrigerant-side load to calculate the actual speed of the compressor. The calculation results are more accurate, require no calibration experiments, and are not limited by compressor displacement or the vehicle used. This solves the problem that existing methods require a large number of calibration experiments and are limited by compressor displacement and the vehicle used.

[0005] This application provides a method for calculating the compressor feedforward speed based on a heat pump system. The method includes:

[0006] Calculate the air-side cooling load of the passenger cabin using air parameters;

[0007] The refrigerant-side load is calculated based on the air-side refrigeration load.

[0008] The actual speed of the compressor is calculated based on the refrigerant-side load.

[0009] In the above implementation process, the refrigerant side load is determined by the air-side refrigeration load, and the actual speed of the compressor is calculated by the refrigerant side load. The calculation results are more accurate than those obtained by looking up tables. No calibration experiments are required, and it is not limited by compressor displacement or vehicle type. This solves the problem that existing methods require a large number of calibration experiments and are limited by compressor displacement and vehicle type.

[0010] Furthermore, the calculation of the air-side cooling load of the passenger cabin using air parameters includes:

[0011] During cooling, the air-side cooling load of the passenger compartment is calculated using the evaporator inlet air temperature, blower air volume, and evaporator target outlet air temperature.

[0012] Qcool=c*BlwVol*ρ1*(Tein-Teo) / 3600;

[0013] Where c represents the specific heat capacity of air, BlwVol represents the blower air volume, ρ1 represents the air density, Tein represents the evaporator inlet air temperature, and Teo represents the evaporator target outlet air temperature.

[0014] During the above implementation process, the air-side cooling load of the passenger cabin can be calculated by the actual inlet air temperature of the evaporator, the blower air volume, and the target outlet air temperature of the evaporator.

[0015] Furthermore, the calculation of the compressor's actual speed based on the refrigerant-side load includes:

[0016] The actual compressor speed is calculated based on the refrigerant side load, evaporator inlet and outlet enthalpy, compressor suction density, and compressor volumetric efficiency.

[0017]

[0018] Where λ represents the heat transfer coefficient between the refrigerant side and the air side, h_EvapoutTag represents the refrigerant enthalpy at the evaporator outlet, h_Evapin represents the refrigerant enthalpy at the evaporator inlet, ρ2 represents the compressor suction density, η represents the compressor volumetric efficiency, and x represents the compressor displacement.

[0019] In the above implementation process, the air-side load is mapped to the refrigerant-side load, and the compressor speed can be directly calculated based on the compressor's volumetric efficiency and displacement. This not only reduces the calibration workload but also provides a more accurate compressor speed, unaffected by changes in displacement or vehicle type.

[0020] Furthermore, the calculation of the air-side cooling load of the passenger cabin using air parameters includes:

[0021] During heating, the air-side cooling load of the passenger cabin is calculated using the actual evaporator temperature, blower airflow, and target outlet air temperature.

[0022] Qheat=c*BlwVol*ρ1*(Tao-Te) / 3600;

[0023] Where c represents the specific heat capacity of air, BlwVol represents the blower air volume, ρ1 represents the air density, Te represents the actual temperature of the evaporator, and Tao represents the target outlet air temperature.

[0024] In the above process, when heating, the air-side cooling load of the passenger cabin can be calculated using the actual evaporator temperature, blower air volume, and target outlet air temperature.

[0025] Furthermore, the calculation of the compressor's actual speed based on the refrigerant-side load includes:

[0026] The actual compressor speed is calculated based on the refrigerant side load, the enthalpy values ​​at the inlet and outlet of the internal condenser, the compressor suction density, and the compressor volumetric efficiency.

[0027]

[0028] Where λ represents the heat transfer coefficient between the refrigerant side and the air side, h_IconInRef represents the refrigerant enthalpy at the inlet of the internal condenser, h_IconOutRef represents the refrigerant enthalpy at the outlet of the internal condenser, ρ2 represents the compressor suction density, η represents the compressor volumetric efficiency, and x represents the compressor displacement.

[0029] In the above implementation process, the air-side load is mapped to the refrigerant-side load, and the compressor speed can be directly calculated based on the compressor's volumetric efficiency and displacement. This not only reduces the calibration workload but also provides a more accurate compressor speed, unaffected by changes in displacement or vehicle type.

[0030] This application embodiment also provides a compressor feedforward speed calculation device based on a heat pump system, the device comprising:

[0031] The cooling load calculation module is used to calculate the air-side cooling load of the passenger cabin using air parameters;

[0032] The refrigerant-side load calculation module is used to calculate the refrigerant-side load based on the air-side refrigeration load.

[0033] The speed calculation module is used to calculate the actual speed of the compressor based on the refrigerant-side load.

[0034] In the above implementation process, the refrigerant side load is determined by the air-side refrigeration load, and the actual speed of the compressor is calculated by the refrigerant side load. The calculation results are more accurate than those obtained by looking up tables. No calibration experiments are required, and it is not limited by compressor displacement or vehicle type. This solves the problem that existing methods require a large number of calibration experiments and are limited by compressor displacement and vehicle type.

[0035] Furthermore, the cooling load calculation module includes:

[0036] The cooling load calculation module on the cooling side is used to calculate the air-side cooling load of the passenger compartment during cooling, using the evaporator inlet air temperature, blower air volume, and the target evaporator outlet air temperature.

[0037] Qcool=c*BlwVol*ρ1*(Tein-Teo) / 3600;

[0038] Where c represents the specific heat capacity of air, BlwVol represents the blower air volume, ρ1 represents the air density, Tein represents the evaporator inlet air temperature, and Teo represents the evaporator target outlet air temperature.

[0039] During the above implementation process, the air-side cooling load of the passenger cabin can be calculated by the actual inlet air temperature of the evaporator, the blower air volume, and the target outlet air temperature of the evaporator.

[0040] Furthermore, the cooling load calculation module also includes:

[0041] The heating-side cooling load calculation module is used to calculate the air-side cooling load of the passenger cabin during heating, using the actual evaporator temperature, blower airflow, and target outlet air temperature.

[0042] Qheat=c*BlwVol*ρ1*(Tao-Te) / 3600;

[0043] Where c represents the specific heat capacity of air, BlwVol represents the blower air volume, ρ1 represents the air density, Te represents the actual temperature of the evaporator, and Tao represents the target outlet air temperature.

[0044] In the above process, when heating, the air-side cooling load of the passenger cabin can be calculated using the actual evaporator temperature, blower air volume, and target outlet air temperature.

[0045] This application also provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor runs the computer program to enable the electronic device to perform the compressor feedforward speed calculation method based on the heat pump system described above.

[0046] This application also provides a readable storage medium storing computer program instructions. When the computer program instructions are read and executed by a processor, the compressor feedforward speed calculation method based on the heat pump system described above is performed. Attached Figure Description

[0047] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 A flowchart illustrating a method for calculating the feedforward speed of a compressor based on a heat pump system, provided in this application embodiment;

[0049] Figure 2 A structural block diagram for calculating the feedforward rotational speed during cooling, provided in an embodiment of this application;

[0050] Figure 3 A flowchart for calculating the actual compressor speed during refrigeration, provided in an embodiment of this application;

[0051] Figure 4 A structural block diagram for calculating the feedforward rotation speed during heating, provided in an embodiment of this application;

[0052] Figure 5 A flowchart for calculating the actual compressor speed during heating, provided in an embodiment of this application;

[0053] Figure 6 A structural block diagram of a compressor feedforward speed calculation device based on a heat pump system provided in this application embodiment;

[0054] Figure 7 A structural block diagram of another compressor feedforward speed calculation device based on a heat pump system provided in this application embodiment.

[0055] icon:

[0056] 100 - Cooling load calculation module; 101 - Cooling load calculation module on the cooling side; 102 - Cooling load calculation module on the heating side; 200 - Refrigerant load calculation module on the refrigerant side; 300 - Rotation speed calculation module; 301 - First rotation speed calculation module; 302 - Second rotation speed calculation module. Detailed Implementation

[0057] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0058] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0059] Example 1

[0060] Please refer to Figure 1 , Figure 1This application provides a flowchart of a method for calculating the feedforward speed of a compressor based on a heat pump system. The method first calculates the air-side cooling load, then converts it to the refrigerant-side load. Based on the refrigerant-side load and the compressor's volumetric efficiency and displacement, the actual compressor speed can be directly calculated. The calculation results are more accurate than those obtained by looking up tables, and no calibration experiments are required; it is not limited by changes in compressor displacement or vehicle model. The method specifically includes the following steps:

[0061] Step S100: Calculate the air-side cooling load of the passenger cabin using air parameters;

[0062] Step S200: Calculate the refrigerant-side load based on the air-side cooling load;

[0063] Step S300: Calculate the actual speed of the compressor based on the refrigerant-side load.

[0064] Specifically, such as Figure 2 The diagram shown is a block diagram of the feedforward speed calculation during cooling. Figure 3 The diagram shown illustrates the calculation process for the actual compressor speed during refrigeration. The calculation process for the actual compressor speed during refrigeration is as follows:

[0065] Step S301: During cooling, calculate the air-side cooling load of the passenger compartment using the evaporator inlet air temperature, blower air volume, and evaporator target outlet air temperature.

[0066] Qcool=c*BlwVol*ρ1*(Tein-Teo) / 3600;

[0067] Where Qcool(w) represents the air-side load, c represents the specific heat capacity of air in J / (kg*℃), and BlwVol represents the blower air volume (m³ / s). 3 / h), ρ1 represents the air density (kg / m³) 3 Tein represents the evaporator inlet air temperature (°C), and Teo represents the evaporator target outlet air temperature (°C).

[0068] The evaporator inlet air temperature can be expressed as:

[0069] Tein=Tam*OutCir+Tin*InCir;

[0070] Where Tein represents the evaporator inlet air temperature (°C), OutCir represents the external circulation ratio, Tam represents the external temperature, Tin represents the internal temperature, and InCir represents the internal circulation ratio.

[0071] Step S302: Calculate the actual compressor speed based on refrigerant side load, evaporator inlet and outlet enthalpy, compressor suction density, and compressor volumetric efficiency.

[0072]

[0073] Where λ represents the heat transfer coefficient between the refrigerant side and the air side, h_EvapoutTag represents the refrigerant enthalpy at the evaporator outlet, h_Evapin represents the refrigerant enthalpy at the evaporator inlet (in KJ / kg), ρ2 represents the compressor suction density, η represents the compressor volumetric efficiency, and x represents the compressor displacement, such as a compressor displacement of 34cc (ml / (r*min)).

[0074] The required heat exchange on the refrigerant side is calculated based on the air-side load. Then, the required mass flow rate of the system is calculated by dividing the mass flow rate by the suction density. The volumetric flow rate is obtained by dividing the volumetric flow rate by the compressor's volumetric efficiency and displacement.

[0075] like Figure 4 The diagram shown is a block diagram of the feedforward rotational speed calculation during heating. Figure 5 The diagram shown illustrates the calculation process for the actual compressor speed during heating. The calculation process for the actual compressor speed during heating is as follows:

[0076] Step S303: During heating, calculate the air-side cooling load of the passenger compartment using the actual evaporator temperature, blower airflow, and target outlet air temperature:

[0077] Qheat=c*BlwVol*ρ1*(Tao-Te) / 3600;

[0078] Where c represents the specific heat capacity of air, BlwVol represents the blower air volume, ρ1 represents the air density, Te represents the actual temperature of the evaporator, and Tao represents the target outlet air temperature.

[0079] Step S304: Calculate the actual compressor speed based on refrigerant side load, inlet and outlet enthalpy of the internal condenser, compressor suction density, and compressor volumetric efficiency.

[0080]

[0081] Where λ represents the heat transfer coefficient between the refrigerant side and the air side, h_IconInRef represents the refrigerant enthalpy value at the inlet of the internal condenser, h_IconOutRef represents the refrigerant enthalpy value at the outlet of the internal condenser, ρ2 represents the compressor suction density, η represents the compressor volumetric efficiency, and x represents the compressor displacement, such as a compressor displacement of 34cc (ml / (r*min)).

[0082] The required heat exchange on the refrigerant side is calculated based on the air-side load. Then, the required mass flow rate of the system is calculated by dividing the mass flow rate by the suction density. The volumetric flow rate is obtained by dividing the volumetric flow rate by the compressor's volumetric efficiency and displacement.

[0083] This method calculates the compressor feedforward control speed entirely based on the air-side load – corresponding to the refrigerant-side load – and then directly calculates the compressor speed based on the compressor's volumetric efficiency and displacement. This method not only reduces calibration workload but also provides a more accurate compressor speed. In contrast, existing methods only calculate the air-side load and then directly look up a table to obtain the compressor speed, and the correspondence between the air-side load and the compressor speed requires extensive experimental calibration.

[0084] When a vehicle model may have compressors with different displacements, this application only needs to replace the compressor volumetric efficiency and displacement value in the formula according to the actual situation to obtain the new compressor feedforward speed. That is, the method described in this application is applicable to the calculation of feedforward speed of compressors with different displacements. However, when the compressor displacement changes, the existing method needs to do some recalibration work in order to obtain the correspondence between air-side load and compressor speed.

[0085] Therefore, this method uses the air-side refrigeration load to determine the refrigerant-side load, and uses the refrigerant-side load to calculate the actual speed of the compressor. The calculation results are more accurate, no calibration experiments are required, and it is not limited by the compressor displacement or the vehicle used. This solves the problem that existing methods require a large number of calibration experiments and are limited by the compressor displacement and the vehicle used.

[0086] Example 2

[0087] This application provides a compressor feedforward speed calculation device based on a heat pump system, applied to the compressor feedforward speed calculation method based on a heat pump system in Embodiment 1, such as... Figure 6 The diagram shown is a structural block diagram of a compressor feedforward speed calculation device based on a heat pump system. The device includes, but is not limited to:

[0088] The cooling load calculation module 100 is used to calculate the air-side cooling load of the passenger compartment using air parameters;

[0089] The refrigerant-side load calculation module 200 is used to calculate the refrigerant-side load based on the air-side refrigeration load.

[0090] The speed calculation module 300 is used to calculate the actual speed of the compressor based on the refrigerant-side load.

[0091] like Figure 7The diagram shown is a structural block diagram of another compressor feedforward speed calculation device based on a heat pump system. The cooling load calculation module 100 includes:

[0092] The cooling load calculation module 101 on the cooling side is used to calculate the air-side cooling load of the passenger compartment during cooling by utilizing the evaporator inlet air temperature, blower air volume, and the target evaporator outlet air temperature.

[0093] Qcool=c*BlwVol*ρ1*(Tein-Teo) / 3600;

[0094] Where c represents the specific heat capacity of air, BlwVol represents the blower air volume, ρ1 represents the air density, Tein represents the evaporator inlet air temperature, and Teo represents the evaporator target outlet air temperature.

[0095] The cooling load calculation module 100 further includes:

[0096] The heating-side cooling load calculation module 102 is used to calculate the air-side cooling load of the passenger compartment during heating by using the actual evaporator temperature, blower air volume, and target outlet air temperature.

[0097] Qheat=c*BlwVol*ρ1*(Tao-Te) / 3600;

[0098] Where c represents the specific heat capacity of air, BlwVol represents the blower air volume, ρ1 represents the air density, Te represents the actual temperature of the evaporator, and Tao represents the target outlet air temperature.

[0099] The rotational speed calculation module 300 includes a first rotational speed calculation module 301 for cooling and a second rotational speed calculation module 302 for heating, wherein the first rotational speed calculation module 301 is used for:

[0100] The actual compressor speed is calculated based on the refrigerant side load, evaporator inlet and outlet enthalpy, compressor suction density, and compressor volumetric efficiency.

[0101]

[0102] Where λ represents the heat transfer coefficient between the refrigerant side and the air side, h_EvapoutTag represents the refrigerant enthalpy at the evaporator outlet, h_Evapin represents the refrigerant enthalpy at the evaporator inlet, ρ2 represents the compressor suction density, η represents the compressor volumetric efficiency, and x represents the compressor displacement.

[0103] The second speed calculation module 302 is used for:

[0104] The actual compressor speed is calculated based on the refrigerant side load, the enthalpy values ​​at the inlet and outlet of the internal condenser, the compressor suction density, and the compressor volumetric efficiency.

[0105]

[0106] Where λ represents the heat transfer coefficient between the refrigerant side and the air side, h_IconInRef represents the refrigerant enthalpy at the inlet of the internal condenser, h_IconOutRef represents the refrigerant enthalpy at the outlet of the internal condenser, ρ2 represents the compressor suction density, η represents the compressor volumetric efficiency, and x represents the compressor displacement.

[0107] This device uses the air-side refrigeration load to determine the refrigerant-side load, and uses the refrigerant-side load to calculate the actual speed of the compressor. The calculation results are more accurate, no calibration experiments are required, and it is not limited by the compressor displacement or the vehicle used. This solves the problem that existing methods require a large number of calibration experiments and are limited by the compressor displacement and the vehicle used.

[0108] This application also provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor runs the computer program to enable the electronic device to execute the compressor feedforward speed calculation method based on a heat pump system described in Embodiment 1.

[0109] This application also provides a readable storage medium storing computer program instructions. When the computer program instructions are read and executed by a processor, the compressor feedforward speed calculation method based on a heat pump system described in Embodiment 1 is executed.

[0110] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0111] In addition, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0112] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0113] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0114] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0115] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A method for calculating the feedforward speed of a compressor based on a heat pump system, characterized in that, The method includes: The air-side cooling load of the passenger compartment is calculated using air parameters, specifically including: during cooling, the air-side cooling load of the passenger compartment is calculated using the evaporator inlet air temperature, blower air volume, and target evaporator outlet air temperature. ； in, c This indicates the specific heat capacity of air. BlwVol Indicates the air volume of the blower. ρ 1 represents air density. Tein Indicates the evaporator inlet air temperature. Teo Indicates the target outlet air temperature of the evaporator; The refrigerant-side load is calculated based on the air-side refrigeration load. The actual compressor speed is calculated based on the refrigerant-side load, specifically including: calculating the actual compressor speed based on the refrigerant-side load, evaporator inlet and outlet enthalpy values, compressor suction density, and compressor volumetric efficiency. ； in, Indicates the heat transfer coefficient between the refrigerant side and the air side. This indicates the enthalpy of the refrigerant at the evaporator outlet. This indicates the enthalpy of the refrigerant at the evaporator inlet. ρ 2 indicates the compressor's suction density. This indicates the compressor's volumetric efficiency. x This indicates the compressor's displacement.

2. The method for calculating the compressor feedforward speed based on a heat pump system according to claim 1, characterized in that, The calculation of the air-side cooling load of the passenger cabin using air parameters includes: During heating, the air-side cooling load of the passenger cabin is calculated using the actual evaporator temperature, blower airflow, and target outlet air temperature. ； in, c This indicates the specific heat capacity of air. BlwVol Indicates the air volume of the blower. ρ 1 represents air density. Te This indicates the actual temperature of the evaporator. Tao This indicates the target outlet air temperature.

3. The method for calculating the compressor feedforward speed based on a heat pump system according to claim 2, characterized in that, The calculation of the compressor's actual speed based on the refrigerant-side load includes: The actual compressor speed is calculated based on the refrigerant side load, the enthalpy values ​​at the inlet and outlet of the internal condenser, the compressor suction density, and the compressor volumetric efficiency. ； in, Indicates the heat transfer coefficient between the refrigerant side and the air side. This indicates the enthalpy of the refrigerant at the inlet of the internal condenser. This indicates the enthalpy of the refrigerant at the outlet of the internal condenser. ρ 2 indicates the compressor's suction density. This indicates the compressor's volumetric efficiency. x This indicates the compressor's displacement.

4. A compressor feedforward speed calculation device based on a heat pump system, characterized in that, The device includes: The cooling load calculation module is used to calculate the air-side cooling load of the passenger compartment using air parameters. Specifically, it includes a cooling-side cooling load calculation module, which calculates the air-side cooling load of the passenger compartment during cooling using the evaporator inlet air temperature, blower air volume, and evaporator target outlet air temperature. ； in, c This indicates the specific heat capacity of air. BlwVol Indicates the air volume of the blower. ρ 1 represents air density. Tein Indicates the evaporator inlet air temperature. Teo Indicates the target outlet air temperature of the evaporator; The refrigerant-side load calculation module is used to calculate the refrigerant-side load based on the air-side refrigeration load. The speed calculation module is used to calculate the actual compressor speed based on the refrigerant-side load, specifically including: calculating the actual compressor speed based on the refrigerant-side load, evaporator inlet and outlet enthalpy values, compressor suction density, and compressor volumetric efficiency. ； in, Indicates the heat transfer coefficient between the refrigerant side and the air side. This indicates the enthalpy of the refrigerant at the evaporator outlet. This indicates the enthalpy of the refrigerant at the evaporator inlet. ρ 2 indicates the compressor's suction density. This indicates the compressor's volumetric efficiency. x This indicates the compressor's displacement.

5. The compressor feedforward speed calculation device based on a heat pump system according to claim 4, characterized in that, The cooling load calculation module also includes: The heating-side cooling load calculation module is used to calculate the air-side cooling load of the passenger cabin during heating, using the actual evaporator temperature, blower airflow, and target outlet air temperature. ； in, c This indicates the specific heat capacity of air. BlwVol Indicates the air volume of the blower. ρ 1 represents air density. Te This indicates the actual temperature of the evaporator. Tao This indicates the target outlet air temperature.

6. An electronic device, characterized in that, The electronic device includes a memory and a processor, the memory being used to store a computer program, and the processor running the computer program to cause the electronic device to perform the compressor feedforward speed calculation method based on a heat pump system according to any one of claims 1 to 3.

7. A readable storage medium, characterized in that, The readable storage medium stores computer program instructions, which are read and executed by a processor to perform the compressor feedforward speed calculation method based on a heat pump system as described in any one of claims 1 to 3.

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