Electric drive integrated air conditioner control method and device, electronic equipment, medium and product

Abstract

The application discloses an electric drive integrated air conditioner control method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring a compressor working medium flow demand, a compressor output power and a vehicle motion parameter; determining a current vehicle working condition according to the vehicle motion parameter; determining a current driving mode and a current compressor driving torque according to the current vehicle working condition, the compressor working medium flow demand and the compressor output power; and driving an air conditioner compressor of the vehicle according to the current driving mode and the current compressor driving torque. The scheme can further optimize the overall energy consumption of the electric drive and the air conditioner system.

Description

Technical Field

[0001] This application relates to the field of electric drive system technology, specifically to an electric drive integrated air conditioning control method, device, electronic equipment, readable storage medium, and computer program product. Background Technology

[0002] In the field of new energy vehicles, the integrated design of air conditioning and electric drive systems is crucial for improving vehicle performance and energy efficiency. In traditional air conditioning-electric drive integrated configurations, the air conditioning compressor and the main drive motor are connected separately. Under different driving conditions, such as low-speed driving, high-speed driving, acceleration, and deceleration, the main drive motor needs to continuously provide power to the air conditioning system. This results in large fluctuations in the workload of the main drive motor, making it difficult to maintain a consistently high-efficiency operating range, and leading to high overall energy consumption. Summary of the Invention

[0003] In view of the above problems, this application provides an electric drive integrated air conditioning control method, device, electronic device, readable storage medium and computer program product, which can further optimize the overall energy consumption of electric drive and air conditioning system.

[0004] In a first aspect, this application provides an electric-driven integrated air conditioning control method, comprising: Obtain the compressor working fluid flow requirement, compressor output power, and vehicle motion parameters; The current vehicle operating condition is determined based on the vehicle motion parameters. The current drive mode and current compressor drive torque are determined based on the current vehicle operating conditions, the compressor working fluid flow requirement, and the compressor output power. The vehicle's air conditioning compressor is driven according to the current driving mode and the current compressor driving torque.

[0005] In the above technical solution, the method can flexibly adjust the driving mode and driving torque of the air conditioning compressor according to different vehicle operating conditions, effectively reduce the workload of the main drive motor, reduce overall energy consumption, and improve energy utilization efficiency.

[0006] In some embodiments, obtaining the compressor working fluid flow requirement, compressor output power, and vehicle motion parameters includes: Obtain air conditioning demand parameters and vehicle motion parameters; Determine the compressor working fluid flow requirement and compressor output power based on the aforementioned air conditioning demand parameters; The air conditioning requirements parameters include at least the air conditioning mode, air conditioning set temperature, outside temperature, front compartment air conditioning fan speed, passenger compartment air conditioning inlet and outlet air temperature, passenger compartment air conditioning inlet and outlet air volume, battery cell temperature, battery water temperature, air conditioning working fluid temperature, and air conditioning output pressure difference. The vehicle motion parameters include at least the vehicle gear, vehicle speed, and the required torque at the vehicle wheels.

[0007] In the above technical solution, the method can accurately acquire rich parameters covering the multi-dimensional status of the air conditioning system and the vehicle's operating status, providing comprehensive and reliable data support for accurately determining the compressor's working fluid flow requirements, output power, and vehicle operating conditions. This enables more reasonable drive control of the air conditioning compressor and improves the overall performance and energy efficiency of the vehicle.

[0008] In some implementations, determining the current vehicle operating condition based on the vehicle motion parameters includes: When it is determined that the vehicle is in a parked state based on the vehicle motion parameters and the required torque at the wheel end is 0, the output shaft disconnection device is disconnected, and the current vehicle operating condition is determined to be a parked idling condition. When the vehicle is determined to be in a stopped state based on the vehicle motion parameters, and the wheel-end torque requirement is greater than 0, the intermediate shaft disconnection device is disconnected, and in conjunction with the output shaft disconnection device, the current vehicle operating condition is determined to be the starting and low-speed driving condition; or when the vehicle speed is detected to be increasing from 0, and the intermediate shaft speed is not greater than the maximum speed threshold, the intermediate shaft disconnection device is disconnected, and in conjunction with the output shaft disconnection device, the current vehicle operating condition is determined to be the starting and low-speed driving condition. When the intermediate shaft speed is detected to be greater than the maximum speed threshold based on the vehicle motion parameters, the output shaft disconnection device is used to determine that the current vehicle operating condition is a medium-to-high speed driving condition.

[0009] In the above technical solution, the method can accurately and meticulously classify different vehicle operating conditions such as idling, starting and low-speed driving, and medium-to-high-speed driving based on key information such as vehicle status, wheel-end torque demand, and intermediate shaft speed in vehicle motion parameters. This provides an accurate basis for formulating reasonable air conditioning compressor drive strategies for different operating conditions, thereby optimizing vehicle power distribution and improving energy efficiency.

[0010] In some embodiments, the intermediate shaft disconnection device is used to control the connection or disconnection of the air conditioning compressor, compressor motor and intermediate shaft; The output shaft disconnection device is used to control the connection or disconnection of the main drive motor, compressor motor and wheel end; When the output shaft disconnection device is disconnected and the intermediate shaft disconnection device is disconnected, the air conditioning compressor is driven by the compressor motor. When the output shaft disconnection device is disconnected and the intermediate shaft disconnection device is engaged, the air conditioning compressor is driven by the main drive motor and the compressor motor together. When the output shaft disconnection device is engaged and the intermediate shaft disconnection device is disengaged, the air conditioning compressor is driven by the compressor motor and the wheel end is driven by the main drive motor. When the output shaft disconnection device is engaged and the intermediate shaft disconnection device is engaged, the air conditioning compressor and wheel end are driven by the main drive motor and the compressor motor together.

[0011] In the above technical solution, the method can realize a variety of different power drive combination modes by flexibly controlling the connection and disconnection states of the intermediate shaft disconnection device and the output shaft disconnection device. This allows the air conditioning compressor and wheel end to obtain the most suitable power source according to actual needs, thereby accurately matching the power demand under different vehicle operating conditions, effectively optimizing power distribution, reducing energy consumption and improving the overall operating efficiency and performance of the vehicle.

[0012] In some implementations, determining the current drive mode and current compressor drive torque based on the current vehicle operating conditions, the compressor working fluid flow requirement, and the compressor output power includes: If the current vehicle operating condition is a parked idling condition, then the first minimum total power consumption is calculated based on the compressor working fluid flow requirement and the compressor output power; The first target torque distribution combination is determined by the first torque distribution combination corresponding to the first minimum total power consumption. The first target compressor motor torque and the first target main drive motor torque are determined based on the first target torque distribution combination. The current driving mode and the current compressor driving torque are determined based on the torque of the first target compressor motor and the torque of the first target main drive motor.

[0013] In the above technical solution, the method can accurately calculate the minimum total power consumption based on the compressor working fluid flow requirement and output power under the parking idling condition, and rationally allocate the torque of the compressor motor and the main drive motor accordingly to determine the most suitable drive mode and compressor drive torque. This way, while meeting the air conditioning operation requirements, the energy consumption under this condition is reduced to the greatest extent and the energy utilization efficiency is improved.

[0014] In some embodiments, calculating the first minimum total power consumption based on the compressor working fluid flow requirement and the compressor output power includes: Based on the compressor working fluid flow requirements, a first numerical combination of different compressor displacement and compressor speed is determined; Based on the first numerical combination, the compressor working fluid flow requirement, and the compressor output power, calculate the first compressor input torque corresponding to each first numerical combination; The input torque of the first compressor is distributed to obtain multiple first torque distribution combinations of the first compressor motor torque and the first main drive motor torque; The power of the first compressor motor is calculated based on the torque of the first compressor motor, and the power of the first main drive motor is calculated based on the torque of the first main drive motor. Based on the power of the first compressor motor and the power of the first main drive motor, calculate the total power consumption of the first combination corresponding to each of the first torque distribution combinations; The first combination with the smallest total power consumption is determined as the first minimum total power consumption.

[0015] In the above technical solution, the method can comprehensively consider the compressor working fluid flow requirements, meticulously plan various numerical combinations of compressor displacement and speed, and accurately calculate the corresponding compressor input torque under each combination. Then, it can rationally allocate the torque of the compressor motor and the main drive motor, and finally determine the drive scheme that minimizes the total power consumption. This achieves optimal energy consumption of the air conditioning system drive under the idling condition, effectively improving energy utilization efficiency and reducing vehicle energy consumption.

[0016] In some implementations, determining the current drive mode and current compressor drive torque based on the first target compressor motor torque and the first target main drive motor torque includes: When the torque of the first target main drive motor is 0, the current drive mode is determined to be the first drive mode, and the current compressor drive torque is determined to be the torque of the first target compressor motor. When the torque of the first target main drive motor is not 0, the current drive mode is determined to be the second drive mode, and the current compressor drive torque is determined to be the torque of the first target compressor motor and the torque of the first target main drive motor. The first driving method is that the air conditioner compressor is driven solely by the compressor motor, while the second driving method is that the air conditioner compressor is driven jointly by the main drive motor and the compressor motor.

[0017] In the above technical solution, the method can accurately distinguish and determine the most suitable driving mode (single compressor motor drive or main drive motor and compressor motor drive together) under the parking idling condition based on whether the torque of the first target main drive motor is 0. At the same time, it can determine the corresponding compressor drive torque, thereby realizing intelligent and precise control of the air conditioning compressor drive mode, effectively reducing energy consumption and improving system operating efficiency.

[0018] In some implementations, determining the current drive mode and current compressor drive torque based on the current vehicle operating conditions, the compressor working fluid flow requirement, and the compressor output power includes: If the current vehicle operating condition is a start-up and low-speed driving condition, then the current drive mode is determined to be the air conditioning compressor driven by the compressor motor and the wheel end driven by the main drive motor; Based on the compressor working fluid flow requirements, a second numerical combination of different compressor displacement and compressor speed is determined; Based on the second numerical combination, the compressor working fluid flow requirement, and the compressor output power, calculate the second compressor input torque corresponding to each second numerical combination; The second compressor motor torque corresponding to each of the second numerical combinations is determined based on the input torque of the second compressor. Calculate the power of the second compressor motor corresponding to each combination of the second values ​​based on the torque of the second compressor motor. The second compressor motor power with the smallest value is determined as the second minimum total power consumption. The torque of the second compressor motor corresponding to the second minimum total power consumption is determined as the current compressor drive torque.

[0019] In the above technical solution, the method can clearly adopt the division of labor between the compressor motor and the main drive motor in the starting and low-speed driving conditions. By carefully planning various combinations of compressor displacement and speed, the power of the compressor motor under each combination is accurately calculated, and the compressor motor torque corresponding to the minimum total power consumption is selected as the current drive torque. In this way, while meeting the air conditioning operation requirements, the driving energy consumption of the air conditioning system under this condition is minimized, effectively improving energy utilization efficiency and ensuring the low-speed driving performance of the vehicle.

[0020] In some implementations, determining the current drive mode and current compressor drive torque based on the current vehicle operating conditions, the compressor working fluid flow requirement, and the compressor output power includes: If the current vehicle operating condition is a medium-to-high speed driving condition, then the compressor drive mode is determined to be either the third drive mode or the fourth drive mode; wherein, the third drive mode is that the air conditioning compressor is driven by the compressor motor, and the fourth drive mode is that the air conditioning compressor is driven by both the compressor motor and the main drive motor. The wheel-end speed and wheel-end power demand are obtained based on the current vehicle operating conditions. Based on the compressor working fluid flow requirement and the compressor output power, calculate the third minimum total power consumption under the third drive mode; Calculate the target main drive motor power under the third drive mode based on the wheel end speed and the wheel end power requirement. Calculate the minimum power consumption of the third drive mode based on the third minimum total power consumption and the target main drive motor power; Based on the wheel end speed, the wheel end power requirement, the compressor working fluid flow requirement, and the compressor output power, calculate the minimum power consumption of the fourth drive mode under the fourth drive mode; When the minimum power consumption of the third driving mode is not greater than the minimum power consumption of the fourth driving mode, the current driving mode is determined to be the third driving mode, and the current compressor driving torque is determined according to the minimum power consumption of the third driving mode. When the minimum power consumption of the third drive mode is greater than the minimum power consumption of the fourth drive mode, the current drive mode is determined to be the fourth drive mode, and the current compressor drive torque is determined according to the minimum power consumption of the fourth drive mode.

[0021] In the above technical solution, the method can comprehensively consider the compressor's operating requirements and the vehicle's wheel-end power requirements under medium and high-speed driving conditions. By calculating the minimum power consumption under the third drive mode (compressor motor driven alone) and the fourth drive mode (compressor motor and main drive motor driven together) respectively, and comparing and analyzing them, the method can intelligently select the drive mode with lower energy consumption, and accurately determine the corresponding compressor drive torque. This enables efficient coordination between the air conditioning system and the vehicle's power system during medium and high-speed driving, minimizing overall energy consumption and improving the vehicle's comprehensive energy efficiency and operating performance.

[0022] In some embodiments, calculating the third minimum total power consumption under the third drive mode based on the compressor working fluid flow requirement and the compressor output power includes: Based on the compressor working fluid flow requirements, a third numerical combination of different compressor displacement and compressor speed is determined; Based on the third numerical combination, the compressor working fluid flow requirement, and the compressor output power, calculate the third compressor input torque corresponding to each third numerical combination; The third compressor motor torque corresponding to each of the third numerical combinations is determined based on the input torque of the third compressor. Calculate the power of the third compressor motor corresponding to each of the third numerical combinations based on the torque of the third compressor motor; The third compressor motor power with the smallest value is determined as the third minimum total power consumption under the third drive mode.

[0023] In the above technical solution, the method can analyze the compressor working fluid flow demand through the system when using the third drive mode (compressor motor driven alone) in medium and high speed driving conditions, comprehensively plan various numerical combinations of compressor displacement and speed, accurately calculate the compressor motor power under each combination, and then screen out the minimum total power consumption. This provides a reliable basis for determining the most energy-efficient compressor operating parameters under this drive mode, and effectively reduces the energy consumption of the air conditioning system in the single drive mode when driving at medium and high speeds.

[0024] In some embodiments, calculating the minimum power consumption of the fourth drive mode under the fourth drive mode based on the wheel-end rotational speed, the wheel-end power demand, the compressor working fluid flow demand, and the compressor output power includes: Calculate the wheel end torque based on the wheel end rotation speed and the wheel end power requirement; The second-stage transmission efficiency and the second-stage transmission ratio are determined based on the wheel end torque and the wheel end speed. Calculate the output wheel end torque of the intermediate shaft based on the wheel end torque, the second-stage transmission efficiency, and the second-stage transmission ratio; The intermediate shaft speed is calculated based on the wheel end speed and the second-stage transmission ratio. Calculate the input torque of the intermediate shaft compressor based on the compressor output power and the intermediate shaft speed; Calculate the total torque of the intermediate shaft based on the output wheel end torque of the intermediate shaft and the input torque of the intermediate shaft compressor; The total torque of the intermediate shaft is distributed to obtain a second torque distribution combination of multiple compressor motor output torque distribution values ​​and main drive motor path output torque distribution values. The power of the second compressor motor is calculated based on the output torque distribution value of the compressor motor, and the power of the second main drive motor is calculated based on the output torque distribution value of the main drive motor path. Based on the power of the second compressor motor and the power of the second main drive motor, calculate the total power consumption of the second combination corresponding to each second torque distribution combination; The minimum total power consumption of the second combination with the smallest value is determined as the minimum power consumption of the fourth drive mode.

[0025] In the above technical solution, this method can comprehensively and meticulously analyze the total power consumption under different torque distribution combinations when using the fourth drive mode (compressor motor and main drive motor jointly drive air conditioning compressor) under medium and high speed driving conditions. It comprehensively considers key parameters such as wheel end speed, power demand, compressor working fluid flow demand and output power, from torque calculation and distribution to power calculation, and accurately finds the torque distribution scheme corresponding to the minimum power consumption. This determines the most energy-efficient and efficient operating parameters under this drive mode, effectively reducing the overall energy consumption of the air conditioning system and vehicle power system under the joint drive mode during medium and high speed driving.

[0026] Secondly, this application provides an electrically driven integrated air conditioning control device, comprising: The acquisition unit is used to acquire the compressor working fluid flow requirement, compressor output power, and vehicle motion parameters; The first determining unit is used to determine the current vehicle operating condition based on the vehicle motion parameters; The second determining unit is used to determine the current driving mode and the current compressor driving torque based on the current vehicle operating condition, the compressor working fluid flow requirement and the compressor output power. The drive unit is used to drive the vehicle's air conditioning compressor according to the current drive mode and the current compressor drive torque.

[0027] In the above technical solution, the device can flexibly adjust the driving mode and driving torque of the air conditioning compressor according to different vehicle operating conditions, effectively reducing the workload of the main drive motor, reducing overall energy consumption, and improving energy utilization efficiency.

[0028] Thirdly, this application provides an electronic device, the electronic device including a memory and a processor, the memory for storing a computer program, the processor running the computer program to cause the electronic device to perform the electric drive integrated air conditioning control method described in any one of the first aspects.

[0029] Fourthly, this application provides a readable storage medium storing a computer program, which, when executed by a processor, performs the electrically driven integrated air conditioning control method described in any one of the first aspects.

[0030] Fifthly, this application provides a computer program product, which includes a computer program that, when executed by a processor, performs the electric drive integrated air conditioning control method described in any one of the first aspects.

[0031] The beneficial effects of this application are: it enables the compressor load to be transferred to the main drive electric drive, or vice versa, by closing the intermediate shaft disconnect device when the motor is in certain operating ranges. This changes the operating point of the electric drive, allowing it to shift from an inefficient point to a high-efficiency point, thereby improving overall efficiency. Attached Figure Description

[0032] 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.

[0033] Figure 1 This application describes the air conditioning-electric drive integrated configuration in some embodiments; Figure 2 This is a schematic diagram of the control system framework of the electric drive integrated air conditioning control method in some embodiments of this application; Figure 3 This is a flowchart illustrating the electric-driven integrated air conditioning control method in some embodiments of this application; Figure 4 The detailed algorithm flow for the parking idling condition in some embodiments of this application is as follows; Figure 5 The detailed algorithm flow for startup and low-speed driving conditions in some embodiments of this application is shown below. Figure 6 The calculation process for the C2 combined mode of medium-high speed driving conditions in some embodiments of this application; Figure 7 This is a MAP diagram showing the efficiency of a certain motor in some embodiments of this application; Figure 8 This is a schematic diagram of the structure of an electrically driven integrated air conditioning control device in some embodiments of this application; Figure 9 This is a schematic diagram of the structure of an electronic device in some embodiments of this application. Detailed Implementation

[0034] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0036] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more (including two), similarly, "multiple sets" refers to two or more sets (including two sets), and "multiple pieces" refers to two or more pieces (including two pieces) unless otherwise explicitly defined.

[0037] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0038] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0039] Currently, electric vehicles generally use scroll-type electric air conditioning, which is separate from the electric drive system and operates independently. Therefore, under certain operating conditions, it has a certain disadvantage in terms of overall efficiency.

[0040] To address the aforementioned technical problems, embodiments of this application provide an electric drive integrated air conditioning control method, which is applied to... Figure 1 The air conditioning-electric drive integrated configuration shown can select the power source through the clutch device under different operating conditions, optimize the workload and efficiency of the main drive motor, and reduce overall energy consumption.

[0041] in, Figure 1 The air conditioning-electric drive integrated configuration shown includes a main drive motor and controller, an input shaft system, an intermediate shaft system, an output shaft system, wheels, an electric air conditioning compressor, an air conditioning compressor motor and controller, an intermediate shaft disconnection device, and an output shaft disconnection device C2.

[0042] The aforementioned main drive motor and controller, input shaft system, intermediate shaft system, and output shaft system realize the input and transmission of drive torque; The aforementioned electric air conditioning compressor, air conditioning compressor motor, and controller can be connected to or disconnected from the intermediate shaft via the intermediate shaft disconnection device C1. When disconnected from the intermediate shaft, the air conditioning compressor motor and controller drive the air conditioning compressor to run; when connected to the intermediate shaft, the air conditioning compressor is driven by the main drive motor and controller.

[0043] The aforementioned intermediate shaft disconnection device C1 and output shaft disconnection device C2 enable the switching of the air conditioner compressor drive mode; The aforementioned electric air conditioning compressor can be a variable displacement compressor or a fixed displacement compressor.

[0044] The aforementioned intermediate shaft disconnection device C1 and output shaft disconnection device C2 can be structures such as clutches, dog teeth, and splines.

[0045] Based on the above, this application provides an electric-driven integrated air conditioning control method, comprising: When the vehicle is parked and idling, C2 is disconnected, and the air conditioning compressor has two driving modes: (1) When C1 is disconnected, it is driven by the air conditioner motor; (2) When C1 is engaged, the compressor is driven by both the main drive motor and the compressor motor.

[0046] When the vehicle is in motion, C2 is engaged, and the air conditioning compressor has two driving modes: (1) When C1 is disconnected, the compressor is driven by the air conditioning motor and the wheel end is driven by the main drive motor; (2) When C1 is engaged, the compressor and wheel end are driven by the main drive motor and the compressor motor together.

[0047] Based on this, the electric drive torque distribution module calculates and compares the total electric power of various drive modes in real time and selects the torque distribution mode with lower energy consumption.

[0048] Please refer to Figure 2 , Figure 2 A schematic diagram of a control system framework for an electric-driven integrated air conditioning control method is shown.

[0049] like Figure 3 As shown, some embodiments of this application provide an electric drive integrated air conditioner control method, which includes: S101. Obtain the compressor working fluid flow requirement, compressor output power, and vehicle motion parameters; S102. Determine the current vehicle operating condition based on vehicle motion parameters; S103. Determine the current drive mode and current compressor drive torque based on the current vehicle operating conditions, compressor working fluid flow requirements, and compressor output power. S104. Drive the vehicle's air conditioning compressor according to the current drive mode and the current compressor drive torque. In the above embodiments, the method can flexibly adjust the driving mode and driving torque of the air conditioning compressor according to different vehicle operating conditions, effectively reduce the workload of the main drive motor, reduce overall energy consumption, and improve energy utilization efficiency.

[0050] In some embodiments, obtaining the compressor working fluid flow requirement, compressor output power, and vehicle motion parameters includes: Obtain air conditioning demand parameters and vehicle motion parameters; Determine the compressor refrigerant flow requirement and compressor output power based on the air conditioning demand parameters; Among them, the air conditioning requirements parameters include at least the air conditioning mode, air conditioning set temperature, outside temperature, front compartment air conditioning fan speed, passenger compartment air conditioning inlet and outlet air temperature, passenger compartment air conditioning inlet and outlet air volume, battery cell temperature, battery water temperature, air conditioning working fluid temperature, and air conditioning output pressure difference. Vehicle motion parameters include at least the vehicle gear, vehicle speed, and the torque required at the vehicle's wheels.

[0051] In some embodiments, the method can determine the compressor working fluid flow requirement Q and the compressor output power P1=Q*△P based on parameters such as air conditioning mode, air conditioning set temperature, outside temperature, front compartment air conditioning fan speed, passenger compartment air conditioning inlet and outlet air temperature, passenger compartment air conditioning inlet and outlet air volume, cell temperature, battery water temperature, air conditioning working fluid temperature, and air conditioning output outlet pressure difference △P.

[0052] In the above embodiments, the method can accurately acquire rich parameters covering the multi-dimensional status of the air conditioning system and the vehicle's operating status, providing comprehensive and reliable data support for accurately determining the compressor's working fluid flow requirements, output power, and vehicle operating conditions, thereby achieving more reasonable drive control of the air conditioning compressor and improving the overall performance and energy efficiency of the vehicle.

[0053] In some embodiments, determining the current vehicle operating condition based on vehicle motion parameters includes: When the vehicle is determined to be in a parked state based on the vehicle motion parameters and the wheel end torque requirement is 0, the output shaft disconnection device is disconnected, and the current vehicle operating condition is determined to be a parked idling condition. When the vehicle is determined to be stationary based on the vehicle motion parameters and the wheel-end torque requirement is greater than 0, the intermediate shaft disconnect device is disconnected and combined with the output shaft disconnect device, and the current vehicle operating condition is determined to be a starting and low-speed driving condition; or when the vehicle speed is detected to be increasing from 0 and the intermediate shaft speed is not greater than the maximum speed threshold, the intermediate shaft disconnect device is disconnected and combined with the output shaft disconnect device, and the current vehicle operating condition is determined to be a starting and low-speed driving condition. When the intermediate shaft speed is detected to be greater than the maximum speed threshold based on the vehicle motion parameters, the output shaft disconnection device is used to determine that the current vehicle operating condition is a medium-to-high speed driving condition.

[0054] In some embodiments, when the vehicle is parked and the wheel-end torque requirement is 0, the output shaft disconnect device C2 disconnects and the current vehicle operating condition is determined to be a parked idling condition.

[0055] In some embodiments, when the required torque at the wheel ends is detected to be greater than 0 when the vehicle stops, the intermediate shaft disconnect device C1 is disengaged, and the output shaft disconnect device C2 is engaged, allowing the vehicle speed to increase from 0. When 0 < intermediate shaft speed ≤ P1*9550 / Tmax, C1 remains disengaged, and the current vehicle operating condition is determined to be a starting and low-speed driving condition. Disengaging C1 in the low-speed range is to prevent the compressor speed from being too low, thereby ensuring the power and cooling capacity of the air conditioning system.

[0056] In some embodiments, when the intermediate shaft speed is greater than P1*9550 / T max At this time, the output shaft disconnect device C2 is engaged, and the current vehicle operating condition is determined to be a medium-to-high speed driving condition.

[0057] In the above embodiments, the method can accurately and meticulously classify different vehicle operating conditions such as idling, starting and low-speed driving, and medium-to-high-speed driving based on key information such as vehicle status, wheel-end torque demand, and intermediate shaft speed in vehicle motion parameters. This provides an accurate basis for formulating reasonable air conditioning compressor drive strategies for different operating conditions, thereby optimizing vehicle power distribution and improving energy efficiency.

[0058] In some embodiments, the intermediate shaft disconnection device is used to control the connection or disconnection of the air conditioning compressor, compressor motor and intermediate shaft; The output shaft disconnection device is used to control the connection or disconnection of the main drive motor, compressor motor and wheel end; When both the output shaft disconnection device and the intermediate shaft disconnection device are disconnected, the air conditioning compressor is driven by the compressor motor. When the output shaft disconnection device is disconnected and the intermediate shaft disconnection device is engaged, the air conditioning compressor is driven by both the main drive motor and the compressor motor. When the output shaft disconnection device is engaged and the intermediate shaft disconnection device is disengaged, the air conditioning compressor is driven by the compressor motor and the wheel end is driven by the main drive motor. When the output shaft disconnect device is engaged and the intermediate shaft disconnect device is engaged, the air conditioning compressor and wheel end are driven by the main drive motor and the compressor motor together.

[0059] In the above embodiments, the method can achieve a variety of different power drive combination modes by flexibly controlling the connection and disconnection states of the intermediate shaft disconnection device and the output shaft disconnection device, so that the air conditioning compressor and wheel end can obtain the most suitable power source according to actual needs, thereby accurately matching the power demand under different vehicle operating conditions, effectively optimizing power distribution, reducing energy consumption and improving the overall operating efficiency and performance of the vehicle.

[0060] In some embodiments, determining the current drive mode and the current compressor drive torque based on the current vehicle operating conditions, compressor refrigerant flow requirements, and compressor output power includes: If the current vehicle is in a parked idling state, the first minimum total power consumption is calculated based on the compressor working fluid flow requirement and the compressor output power. The first target torque distribution combination is determined by the first torque distribution combination corresponding to the first minimum total power consumption. The first target compressor motor torque and the first target main drive motor torque are determined based on the first target torque distribution combination; The current drive mode and current compressor drive torque are determined based on the torque of the first target compressor motor and the torque of the first target main drive motor.

[0061] For example, given the compressor's working fluid flow requirement Q and output power P1, and assuming the compressor is a variable displacement compressor, it can be known that Q can be achieved by different combinations of compressor displacement V1 and compressor speed n1, where... Q = V1 * n1; n1≥P1*9550 / T max ; T max This is the maximum allowable operating torque for the compressor.

[0062] At this time, the compressor input torque is T1=(P1*9550) / (n1*η1), and the compressor efficiency η1 is determined by parameters such as working fluid temperature, output pressure difference, and speed.

[0063] V1 takes different values ​​V 1k (k=0,1,2,…), corresponding to the compressor speed and input torque as follows: n 1k =Q / V 1k ; T 1k=(P1*9550) / (n 1k *η 1k ).

[0064] When V1 and n1 take different combinations, the corresponding T1 values ​​are different.

[0065] For a certain T 1k If C1 is engaged, the compressor has two power sources: the main drive motor and the compressor motor. T 1k Torque can be distributed between the main drive motor and the compressor to optimize for the lowest power consumption.

[0066] If the compressor torque distribution value is T 1kj If (j=0,1,2,3,…), then the torque distribution value on the main drive motor path is T. 1kj ˝=T 1k - T 1kj ´.

[0067] The compressor motor power is P 2kj ´=(T 1kj ´*n 1k ) / (9550*η 1kj ), η 1kj n is the compressor motor speed 1k Output torque T 1kj Work efficiency at any time.

[0068] Drive motor power P 2kj ˝= (T 1kj ˝*n 1k ) / (9550*η 2kj ), η 2kj Main drive motor speed n 2k =n 1k *i1, Output torque T 2kj ˝=T 1kj The total efficiency of the main drive motor and primary transmission at ˝ / i1.

[0069] Total power consumption P 2kj = P 2kj ´+P 2kj ˝.

[0070] By iterating through all combinations of V1 and n1, as well as the torque distribution of T1, the optimal solution for total power can be obtained.

[0071] When the optimization result T 1kj When ˝=0, the compressor motor undertakes all driving tasks, and C1 can be disconnected to reduce the drag loss of the main drive motor.

[0072] Please refer to Figure 4 , Figure 4A detailed algorithm flow for a parking idling condition is shown.

[0073] In the above embodiments, the method can accurately calculate the minimum total power consumption based on the compressor working fluid flow requirement and output power under the parking idling condition, and reasonably allocate the torque of the compressor motor and the main drive motor accordingly to determine the most suitable drive mode and compressor drive torque. This way, while meeting the air conditioning operation requirements, the energy consumption under this condition is reduced to the greatest extent and the energy utilization efficiency is improved.

[0074] In some embodiments, calculating a first minimum total power consumption based on the compressor working fluid flow requirement and the compressor output power includes: The first numerical combination of different compressor displacement and compressor speed is determined based on the compressor working fluid flow requirements; Based on the first numerical combination, the compressor working fluid flow requirement, and the compressor output power, calculate the first compressor input torque corresponding to each first numerical combination; The input torque of the first compressor is distributed to obtain multiple first torque distribution combinations of the first compressor motor torque and the first main drive motor torque; The power of the first compressor motor is calculated based on the torque of the first compressor motor, and the power of the first main drive motor is calculated based on the torque of the first main drive motor. Based on the power of the first compressor motor and the power of the first main drive motor, calculate the total power consumption of the first combination corresponding to each first torque distribution combination; The first combination with the smallest total power consumption is determined as the first minimum total power consumption.

[0075] In the above embodiments, the method can comprehensively consider the compressor working fluid flow requirements, meticulously plan various numerical combinations of compressor displacement and speed, and accurately calculate the corresponding compressor input torque under each combination. Then, it can rationally allocate the torque of the compressor motor and the main drive motor, and finally determine the drive scheme that minimizes the total power consumption. This achieves optimal energy consumption of the air conditioning system drive under the parking idling condition, effectively improving energy utilization efficiency and reducing vehicle energy consumption.

[0076] In some embodiments, determining the current drive mode and the current compressor drive torque based on the first target compressor motor torque and the first target main drive motor torque includes: When the torque of the first target main drive motor is 0, the current drive mode is determined to be the first drive mode, and the current compressor drive torque is determined to be the torque of the first target compressor motor. When the torque of the first target main drive motor is not 0, the current drive mode is determined to be the second drive mode, and the current compressor drive torque is determined to be the torque of the first target compressor motor and the torque of the first target main drive motor. The first driving method is that the air conditioner compressor is driven solely by the compressor motor, and the second driving method is that the air conditioner compressor is driven jointly by the main drive motor and the compressor motor.

[0077] In the above embodiments, the method can accurately distinguish and determine the most suitable driving mode (single compressor motor drive or main drive motor and compressor motor drive together) under the parking idling condition based on whether the torque of the first target main drive motor is 0, and at the same time determine the corresponding compressor drive torque, thereby realizing intelligent and precise control of the air conditioning compressor drive mode, effectively reducing energy consumption and improving system operating efficiency.

[0078] In some embodiments, determining the current drive mode and the current compressor drive torque based on the current vehicle operating conditions, compressor refrigerant flow requirements, and compressor output power includes: If the current vehicle operating condition is starting and low-speed driving, then the current drive mode is determined to be the air conditioning compressor driven by the compressor motor and the wheel end driven by the main drive motor. A second numerical combination of compressor displacement and compressor speed is determined based on the compressor working fluid flow requirements; Based on the second numerical combination, the compressor working fluid flow requirement, and the compressor output power, calculate the second compressor input torque corresponding to each second numerical combination; The second compressor motor torque corresponding to each second numerical combination is determined based on the input torque of the second compressor. Calculate the power of the second compressor motor corresponding to each combination of second values ​​based on the torque of the second compressor motor. The second compressor motor power with the smallest value is determined as the second minimum total power consumption. The torque of the second compressor motor corresponding to the second minimum total power consumption is determined as the current compressor drive torque.

[0079] For example, given the compressor's refrigerant flow rate requirement Q and output power P1, and assuming the compressor is a variable displacement compressor, Q can be achieved by different combinations of compressor displacement V1 and compressor speed n1. Q = V1 * n1; n1≥P1*9550 / T max ; T max This is the maximum allowable operating torque for the compressor.

[0080] At this time, the compressor input torque T1 = (P1 * 9550) / (n 1* The compressor efficiency η1 is determined by parameters such as working fluid temperature, output pressure difference, and speed.

[0081] The input torque of the compressor motor is T2 = T1 / η3, where η3 is the working efficiency of the compressor motor when the speed is n1 and the output torque is T1.

[0082] The compressor motor power P2 = T1*n1 / (η1*η3*9550).

[0083] V1 takes different values ​​V 1k (k=0,1,2,…), corresponding to the compressor speed and input torque respectively: n 1k =Q / V 1k ; T 1k =(P1*9550) / (n 1k *η 1k ); When V1 and n1 take different combinations, the corresponding T1 is different.

[0084] By iterating through all combinations of V1 and n1, the optimal solution for total power can be obtained.

[0085] Please refer to Figure 5 , Figure 5 A detailed algorithm flow for startup and low-speed driving conditions is shown.

[0086] In the above embodiments, the method can clearly adopt the division of labor between the compressor motor and the main drive motor in the starting and low-speed driving conditions. By carefully planning various combinations of compressor displacement and speed, the power of the compressor motor under each combination is accurately calculated, and the compressor motor torque corresponding to the minimum total power consumption is selected as the current drive torque. In this way, while meeting the air conditioning operation requirements, the driving energy consumption of the air conditioning system under this condition is minimized, effectively improving energy utilization efficiency and ensuring the low-speed driving performance of the vehicle.

[0087] In some embodiments, determining the current drive mode and the current compressor drive torque based on the current vehicle operating conditions, compressor refrigerant flow requirements, and compressor output power includes: If the current vehicle is in a medium-to-high speed driving condition, then the compressor drive mode is determined to be either the third drive mode or the fourth drive mode; wherein, the third drive mode is that the air conditioning compressor is driven by the compressor motor, and the fourth drive mode is that the air conditioning compressor is driven by both the compressor motor and the main drive motor. Obtain the wheel-end speed and wheel-end power demand based on the current vehicle operating conditions; Based on the compressor working fluid flow requirement and compressor output power, calculate the third minimum total power consumption under the third drive mode; Calculate the target main drive motor power under the third drive mode based on the wheel end speed and wheel end power requirement. Calculate the minimum power consumption of the third drive mode based on the third minimum total power consumption and the target main drive motor power; Based on the wheel end speed, wheel end power demand, compressor working fluid flow demand, and compressor output power, calculate the minimum power consumption of the fourth drive mode under the fourth drive mode. When the minimum power consumption of the third drive mode is not greater than the minimum power consumption of the fourth drive mode, the current drive mode is determined to be the third drive mode, and the current compressor drive torque is determined according to the minimum power consumption of the third drive mode. When the minimum power consumption of the third drive mode is greater than that of the fourth drive mode, the current drive mode is determined to be the fourth drive mode, and the current compressor drive torque is determined based on the minimum power consumption of the fourth drive mode.

[0088] In some embodiments, under the third drive mode, it can be assumed that C1 is disengaged and the compressor is driven by the compressor motor. At this time, the wheel end speed is n3, the wheel end power requirement is P3, the wheel end torque is T3=P3*9550 / n3, and the target main drive motor power is P4=P3 / η2, where η2 is the total efficiency of the transmission system under the conditions of output n3 and T3.

[0089] In some embodiments, the total electrical power (minimum power consumption of the third drive mode) of the main drive motor and compressor in the C1 disconnected state is P5 = P4 + P 2min .

[0090] In some embodiments, the minimum power consumption of the fourth drive mode is P6. If P5 ≤ P6, then C1 is open, and the compressor motor drives the compressor independently. Conversely, C1 is closed, and torque distribution is performed according to the power-optimal operating condition.

[0091] Please refer to Figure 6 , Figure 6 The calculation process of a C2 combined mode for medium and high speed driving conditions is shown.

[0092] In the above embodiments, the method can comprehensively consider the compressor's operating requirements and the vehicle's wheel-end power requirements under medium- and high-speed driving conditions. By calculating the minimum power consumption under the third drive mode (compressor motor driven alone) and the fourth drive mode (compressor motor and main drive motor driven together) respectively, and comparing and analyzing them, the method can intelligently select the drive mode with lower energy consumption, and accurately determine the corresponding compressor drive torque. This enables efficient coordination between the air conditioning system and the vehicle's power system during medium- and high-speed driving, minimizing overall energy consumption and improving the vehicle's comprehensive energy efficiency and operating performance.

[0093] In some embodiments, the third minimum total power consumption under the third drive mode is calculated based on the compressor working fluid flow requirement and the compressor output power, including: A third numerical combination of compressor displacement and compressor speed is determined based on the compressor working fluid flow requirements; Based on the third numerical combination, the compressor working fluid flow requirement, and the compressor output power, calculate the third compressor input torque corresponding to each third numerical combination; The motor torque of the third compressor corresponding to each combination of third values ​​is determined based on the input torque of the third compressor. Calculate the power of the third compressor motor corresponding to each combination of third values ​​based on the torque of the third compressor motor. The third compressor motor power with the smallest value is determined as the third minimum total power consumption under the third drive mode.

[0094] For example, given the compressor's refrigerant flow requirement Q and output power P1, and considering that the air conditioning compressor is a variable displacement compressor, Q can be achieved by different combinations of compressor displacement V1 and compressor speed n1. Q = V1 * n1; n1≥P1*9550 / T max ; T max This is the maximum allowable operating torque for the compressor.

[0095] At this time, the compressor input torque T1 = (P1 * 9550) / (n1 * η1), and the compressor efficiency η1 is determined by parameters such as working fluid temperature, output pressure difference, and speed.

[0096] The input torque of the compressor motor is T2 = T1 / η3, where η3 is the working efficiency of the compressor motor when the speed is n1 and the output torque is T1.

[0097] Compressor motor power P2=(T1*n1) / (η1*η3*9550).

[0098] Where V1 takes different values ​​V 1k (k=0,1,2,…), corresponding to the compressor speed and input torque respectively: n 1k =Q / V 1k T 1k =(P1*9550) / (n 1k *η 1k ).

[0099] When V1 and n1 take different combinations, the corresponding T1 is different.

[0100] By iterating through all combinations of V1 and n1, the optimal solution for power P2 is obtained.

[0101] In the above embodiments, when the third drive mode (compressor motor driven alone) is used in medium and high speed driving conditions, the method can analyze the compressor working fluid flow demand through the system, comprehensively plan various numerical combinations of compressor displacement and speed, accurately calculate the compressor motor power under each combination, and then screen out the minimum total power consumption. This provides a reliable basis for determining the most energy-efficient compressor operating parameters under this drive mode, and effectively reduces the energy consumption of the air conditioning system in the single drive mode when driving at medium and high speeds.

[0102] In some embodiments, the minimum power consumption of the fourth drive mode is calculated based on the wheel-end speed, wheel-end power demand, compressor working fluid flow demand, and compressor output power, including: Calculate the wheel-end torque based on the wheel-end speed and the required power at the wheel end; The efficiency and ratio of the second-stage transmission are determined based on the wheel-end torque and wheel-end speed. Calculate the output wheel end torque of the intermediate shaft based on the wheel end torque, the second-stage transmission efficiency, and the second-stage transmission ratio; Calculate the intermediate shaft speed based on the wheel end speed and the second-stage transmission ratio; Calculate the input torque of the intermediate shaft compressor based on the compressor output power and intermediate shaft speed; Calculate the total torque of the intermediate shaft based on the output wheel end torque and the input torque of the intermediate shaft compressor; The total torque of the intermediate shaft is distributed to obtain a second torque distribution combination of multiple compressor motor output torque distribution values ​​and main drive motor path output torque distribution values. The power of the second compressor motor is calculated based on the output torque distribution value of the compressor motor, and the power of the second main drive motor is calculated based on the output torque distribution value of the main drive motor path. Based on the power of the second compressor motor and the power of the second main drive motor, calculate the total power consumption of the second combination corresponding to each second torque distribution combination; The minimum total power consumption of the second combination with the smallest value is determined as the minimum power consumption of the fourth drive mode.

[0103] For example, assuming C1 is combined, the compressor is driven by both the compressor motor and the main drive motor. At this time, the wheel end speed is n3, the wheel end power requirement is P3, the wheel end torque is T3=P3*9550 / n3, the intermediate shaft speed is n4=n3*i2, and the output torque to the intermediate shaft at the wheel end is T4=T3 / (i2*η4), where η4 is the secondary transmission efficiency of the transmission system under the conditions of output n3 and T3.

[0104] Given the compressor's working fluid flow rate requirement Q and output power P1. Due to the connection of C1, the compressor speed is equal to the intermediate shaft speed n4. At this time, the compressor input torque T1 = (P1 * 9550) / (n4 * η1). The compressor efficiency η1 is determined by the working fluid temperature, the pressure difference at the output port, and the speed.

[0105] The total torque of the intermediate shaft is T5 = T1 + T4.

[0106] T5 can allocate power between the main drive motor and the compressor to optimize for the lowest power consumption. For example, the compressor torque allocation value is T. 5j ´( j If the given information is 0, 1, 2, 3, ..., then the torque distribution value on the main drive motor path is T. 5j ˝=T5- T 5j ´.

[0107] The compressor motor power is P 6j ´=(T 5j ´*n4) / (9550*η 5j ), η 5j The compressor motor speed n4 and output torque T are... 5j Work efficiency at any time.

[0108] Drive motor power P 6j ˝=(T 5j ˝*n4) / (9550*η 2j ), η 2j Main drive motor speed n2=n4*i1, output torque T 6j ˝=T 5j The total efficiency of the main drive motor and primary transmission at ˝ / i1.

[0109] Total power consumption P 6j = P 6j ´+P 6j ˝.

[0110] By iterating through all the T5 torque distribution combinations, the optimal solution for total power in the C1 engagement state can be obtained.

[0111] In the above embodiments, this method can comprehensively and meticulously analyze the total power consumption under different torque distribution combinations when using the fourth drive mode (compressor motor and main drive motor jointly drive air conditioning compressor) under medium and high speed driving conditions. It comprehensively considers key parameters such as wheel end speed, power demand, compressor working fluid flow demand and output power, from torque calculation and distribution to power calculation, and accurately finds the torque distribution scheme corresponding to the minimum power consumption. This determines the most energy-efficient operating parameters under this drive mode, effectively reducing the overall energy consumption of the air conditioning system and vehicle power system under the joint drive mode during medium and high speed driving.

[0112] In some embodiments, calculating the power of the second compressor motor based on the compressor motor output torque distribution value includes: The input torque of the compressor motor is determined based on the output torque distribution value of the compressor motor. The power of the second compressor motor is calculated based on the input torque of the compressor motor and the speed of the intermediate shaft.

[0113] The calculation of the second main drive motor power based on the output torque distribution value of the main drive motor path includes: Calculate the main drive motor speed based on the intermediate shaft speed; The output torque of the main drive motor is determined based on the output torque distribution value of the main drive motor path. The power of the second main drive motor is calculated based on the output torque and speed of the main drive motor.

[0114] In the above embodiments, the method can accurately calculate the main drive motor speed based on the intermediate shaft speed, and determine its output torque by combining the output torque distribution value of the main drive motor path, thereby accurately calculating the power of the second main drive motor. This provides key data for comprehensively evaluating the energy consumption of the main drive motor under the fourth drive mode, and helps to further optimize the energy distribution and utilization efficiency of the vehicle power system in the common drive mode when driving at medium and high speeds.

[0115] To make the objectives, technical solutions, and advantages of this application clearer, the application effects of this application will be described below. In some embodiments, Figure 7 An efficiency map of a certain motor is shown. This method can appropriately increase the torque load in certain speed ranges when the motor torque is relatively low, thereby improving efficiency. Specifically, when the motor is operating in certain operating areas, the method can transfer the compressor load to the main drive electric drive, or vice versa, by closing the intermediate shaft disconnect device C1. By changing the electric drive's operating point, from an inefficient point to a high-efficiency point, the overall efficiency is improved.

[0116] Figure 8 A schematic diagram of an electrically driven integrated air conditioning control device is shown. It should be understood that this device is related to... Figure 1 The method executed in the middle corresponds to the steps involved in the aforementioned method. The specific functions and effects of the device can be found in the description above. To avoid repetition, detailed descriptions are omitted here.

[0117] The electric-driven integrated air conditioning control device includes: The acquisition unit 210 is used to acquire the compressor working fluid flow requirement, compressor output power and vehicle motion parameters; The first determining unit 220 is used to determine the current vehicle operating condition based on vehicle motion parameters; The second determining unit 230 is used to determine the current driving mode and the current compressor driving torque based on the current vehicle operating conditions, compressor working fluid flow requirements and compressor output power. The drive unit 240 is used to drive the vehicle's air conditioning compressor according to the current drive mode and the current compressor drive torque.

[0118] In some embodiments, the acquisition unit 210 includes: The first acquisition subunit 211 is used to acquire air conditioning demand parameters and vehicle motion parameters; The first determining subunit 212 is used to determine the compressor working fluid flow requirement and compressor output power based on the air conditioning demand parameters; Among them, the air conditioning requirements parameters include at least the air conditioning mode, air conditioning set temperature, outside temperature, front compartment air conditioning fan speed, passenger compartment air conditioning inlet and outlet air temperature, passenger compartment air conditioning inlet and outlet air volume, battery cell temperature, battery water temperature, air conditioning working fluid temperature, and air conditioning output pressure difference. Vehicle motion parameters include at least the vehicle gear, vehicle speed, and the torque required at the vehicle's wheels.

[0119] In some embodiments, the first determining unit 220 is specifically used to disconnect the output shaft disconnection device and determine the current vehicle operating condition as a parking idle condition when it is determined from the vehicle motion parameters that the vehicle is in a parking state and the wheel end required torque is 0. The first determining unit 220 is further configured to, when determining that the vehicle is in a stopped state based on vehicle motion parameters and the wheel end required torque is greater than 0, disconnect the intermediate shaft disconnect device and, in conjunction with the output shaft disconnect device, determine that the current vehicle operating condition is a starting and low-speed driving condition; or when detecting that the vehicle speed increases from 0 and the intermediate shaft speed is not greater than the maximum speed threshold, disconnect the intermediate shaft disconnect device and, in conjunction with the output shaft disconnect device, determine that the current vehicle operating condition is a starting and low-speed driving condition. The first determining unit 220 is further used to determine the current vehicle operating condition as a medium-high speed driving condition when the intermediate shaft speed is detected to be greater than the maximum speed threshold based on the vehicle motion parameters, in conjunction with the output shaft disconnection device.

[0120] In some embodiments, the intermediate shaft disconnection device is used to control the connection or disconnection of the air conditioning compressor, compressor motor and intermediate shaft; The output shaft disconnection device is used to control the connection or disconnection of the main drive motor, compressor motor and wheel end; When both the output shaft disconnection device and the intermediate shaft disconnection device are disconnected, the air conditioning compressor is driven by the compressor motor. When the output shaft disconnection device is disconnected and the intermediate shaft disconnection device is engaged, the air conditioning compressor is driven by both the main drive motor and the compressor motor. When the output shaft disconnection device is engaged and the intermediate shaft disconnection device is disengaged, the air conditioning compressor is driven by the compressor motor and the wheel end is driven by the main drive motor. When the output shaft disconnect device is engaged and the intermediate shaft disconnect device is engaged, the air conditioning compressor and wheel end are driven by the main drive motor and the compressor motor together.

[0121] In some embodiments, the second determining unit 230 includes: The calculation subunit 231 is used to calculate the first minimum total power consumption based on the compressor working fluid flow requirement and the compressor output power if the current vehicle operating condition is a parking idling condition. The second determining subunit 232 is used to determine the first target torque distribution combination from the first torque distribution combination corresponding to the first minimum total power consumption. The second determining subunit 232 is also used to determine the first target compressor motor torque and the first target main drive motor torque according to the first target torque distribution combination; The second determining subunit 232 is also used to determine the current driving mode and the current compressor driving torque based on the first target compressor motor torque and the first target main drive motor torque.

[0122] In some embodiments, the calculation subunit 231 is specifically used to determine a first numerical combination of different compressor displacement and compressor speed according to the compressor working fluid flow requirements; Based on the first numerical combination, the compressor working fluid flow requirement, and the compressor output power, calculate the first compressor input torque corresponding to each first numerical combination; The input torque of the first compressor is distributed to obtain multiple first torque distribution combinations of the first compressor motor torque and the first main drive motor torque; The power of the first compressor motor is calculated based on the torque of the first compressor motor, and the power of the first main drive motor is calculated based on the torque of the first main drive motor. Based on the power of the first compressor motor and the power of the first main drive motor, calculate the total power consumption of the first combination corresponding to each first torque distribution combination; The first combination with the smallest total power consumption is determined as the first minimum total power consumption.

[0123] In some embodiments, the second determining subunit 232 is specifically used to determine the current driving mode as the first driving mode and the current compressor driving torque as the first target compressor motor torque when the torque of the first target main drive motor is 0. When the torque of the first target main drive motor is not 0, the current drive mode is determined to be the second drive mode, and the current compressor drive torque is determined to be the torque of the first target compressor motor and the torque of the first target main drive motor. The first driving method is that the air conditioner compressor is driven solely by the compressor motor, and the second driving method is that the air conditioner compressor is driven jointly by the main drive motor and the compressor motor.

[0124] In some embodiments, the second determining unit 230 includes: The calculation subunit 231 is used to determine the current driving mode as the air conditioning compressor being driven by the compressor motor and the wheel end being driven by the main drive motor if the current vehicle operating condition is the starting and low-speed driving condition. The second determining subunit 232 is used to determine a second numerical combination of different compressor displacement and compressor speed according to the compressor working fluid flow requirements; The calculation subunit 231 is also used to calculate the second compressor input torque corresponding to each second numerical combination based on the second numerical combination, the compressor working fluid flow requirement and the compressor output power. The second determining subunit 232 is also used to determine the second compressor motor torque corresponding to each second numerical combination based on the second compressor input torque; The calculation subunit 231 is also used to calculate the power of the second compressor motor corresponding to each second numerical combination based on the torque of the second compressor motor. The second determining subunit 232 is also used to determine the second compressor motor power with the smallest value as the second minimum total power consumption; The second determining subunit 232 is also used to determine the second compressor motor torque corresponding to the second minimum total power consumption as the current compressor drive torque.

[0125] In some embodiments, the second determining unit 230 includes: The second determining subunit 232 is used to determine whether the compressor driving mode is the third driving mode or the fourth driving mode if the current vehicle operating condition is a medium-high speed driving condition; wherein, the third driving mode is that the air conditioning compressor is driven by the compressor motor, and the fourth driving mode is that the air conditioning compressor is driven by both the compressor motor and the main drive motor. The second acquisition subunit 233 is used to acquire the wheel end speed and wheel end power demand according to the current vehicle operating conditions; The calculation subunit 231 is used to calculate the third minimum total power consumption under the third drive mode based on the compressor working fluid flow requirement and the compressor output power. The calculation subunit 231 is also used to calculate the target main drive motor power under the third drive mode based on the wheel end speed and the wheel end power requirement; The calculation subunit 231 is also used to calculate the minimum power consumption of the third drive mode based on the third minimum total power consumption and the target main drive motor power; The calculation subunit 231 is also used to calculate the minimum power consumption of the fourth drive mode under the fourth drive mode based on the wheel end speed, wheel end power demand, compressor working fluid flow demand and compressor output power. The second determining subunit 232 is also used to determine the current driving mode as the third driving mode when the minimum power consumption of the third driving mode is not greater than the minimum power consumption of the fourth driving mode, and to determine the current compressor driving torque based on the minimum power consumption of the third driving mode. The second determining subunit 232 is further configured to determine the current driving mode as the fourth driving mode when the minimum power consumption of the third driving mode is greater than the minimum power consumption of the fourth driving mode, and to determine the current compressor driving torque based on the minimum power consumption of the fourth driving mode.

[0126] In some embodiments, the calculation subunit 231 is specifically used to determine a third numerical combination of different compressor displacement and compressor speed based on the compressor working fluid flow requirements; Based on the third numerical combination, the compressor working fluid flow requirement, and the compressor output power, calculate the third compressor input torque corresponding to each third numerical combination; The motor torque of the third compressor corresponding to each combination of third values ​​is determined based on the input torque of the third compressor. Calculate the power of the third compressor motor corresponding to each combination of third values ​​based on the torque of the third compressor motor. The third compressor motor power with the smallest value is determined as the third minimum total power consumption under the third drive mode.

[0127] In some embodiments, the calculation subunit 231 is specifically used to calculate the wheel end torque based on the wheel end speed and the wheel end power demand; The efficiency and ratio of the second-stage transmission are determined based on the wheel-end torque and wheel-end speed. Calculate the output wheel end torque of the intermediate shaft based on the wheel end torque, the second-stage transmission efficiency, and the second-stage transmission ratio; Calculate the intermediate shaft speed based on the wheel end speed and the second-stage transmission ratio; Calculate the input torque of the intermediate shaft compressor based on the compressor output power and intermediate shaft speed; Calculate the total torque of the intermediate shaft based on the output wheel end torque and the input torque of the intermediate shaft compressor; The total torque of the intermediate shaft is distributed to obtain a second torque distribution combination of multiple compressor motor output torque distribution values ​​and main drive motor path output torque distribution values. The power of the second compressor motor is calculated based on the output torque distribution value of the compressor motor, and the power of the second main drive motor is calculated based on the output torque distribution value of the main drive motor path. Based on the power of the second compressor motor and the power of the second main drive motor, calculate the total power consumption of the second combination corresponding to each second torque distribution combination; The minimum total power consumption of the second combination with the smallest value is determined as the minimum power consumption of the fourth drive mode.

[0128] like Figure 9 As shown, this application provides an electronic device 300, which includes a processor 301 and a memory 302. The processor 301 and the memory 302 are interconnected and communicate with each other through a communication bus 303 and / or other forms of connection mechanism (not shown). The memory 302 stores a computer program that can be executed by the processor 301. When the computing device is running, the processor 301 executes the computer program to perform the method in any of the aforementioned optional implementations.

[0129] This application provides a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the method in any of the aforementioned optional implementations.

[0130] The computer-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Red-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0131] This application provides a computer program product, which includes a computer program that, when run by a processor, executes the method in any of the aforementioned optional implementations.

[0132] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A method for controlling an electrically driven integrated air conditioner, characterized in that, include: Obtain the compressor working fluid flow requirement, compressor output power, and vehicle motion parameters; The current vehicle operating condition is determined based on the vehicle motion parameters. The current drive mode and current compressor drive torque are determined based on the current vehicle operating conditions, the compressor working fluid flow requirement, and the compressor output power. The vehicle's air conditioning compressor is driven according to the current driving mode and the current compressor driving torque; The acquisition of compressor working fluid flow requirements, compressor output power, and vehicle motion parameters includes: Obtain air conditioning demand parameters and vehicle motion parameters; Determine the compressor working fluid flow requirement and compressor output power based on the aforementioned air conditioning demand parameters; The air conditioning requirements parameters include at least the air conditioning mode, air conditioning set temperature, outside temperature, front cabin air conditioning fan speed, passenger cabin air conditioning inlet and outlet air temperature, passenger cabin air conditioning inlet and outlet air volume, battery cell temperature, battery water temperature, air conditioning working fluid temperature, and air conditioning output pressure difference. The vehicle motion parameters include at least the vehicle gear, vehicle speed, and required torque at the vehicle wheel ends; The step of determining the current vehicle operating condition based on the vehicle motion parameters includes: When it is determined that the vehicle is in a parked state based on the vehicle motion parameters and the required torque at the wheel end is 0, the output shaft disconnection device is disconnected, and the current vehicle operating condition is determined to be a parked idling condition. When the vehicle is determined to be in a stopped state based on the vehicle motion parameters, and the wheel-end torque requirement is greater than 0, the intermediate shaft disconnection device is disconnected, and in conjunction with the output shaft disconnection device, the current vehicle operating condition is determined to be the starting and low-speed driving condition; or when the vehicle speed is detected to be increasing from 0, and the intermediate shaft speed is not greater than the maximum speed threshold, the intermediate shaft disconnection device is disconnected, and in conjunction with the output shaft disconnection device, the current vehicle operating condition is determined to be the starting and low-speed driving condition. When the intermediate shaft speed is detected to be greater than the maximum speed threshold based on the vehicle motion parameters, the output shaft disconnection device is used to determine that the current vehicle operating condition is a medium-to-high speed driving condition.

2. The electric drive integrated air conditioning control method according to claim 1, characterized in that, The intermediate shaft disconnection device is used to control the connection or disconnection of the air conditioner compressor, compressor motor and intermediate shaft. The output shaft disconnection device is used to control the connection or disconnection of the main drive motor, compressor motor and wheel end; When the output shaft disconnection device is disconnected and the intermediate shaft disconnection device is disconnected, the air conditioning compressor is driven by the compressor motor. When the output shaft disconnection device is disconnected and the intermediate shaft disconnection device is engaged, the air conditioning compressor is driven by the main drive motor and the compressor motor together. When the output shaft disconnection device is engaged and the intermediate shaft disconnection device is disengaged, the air conditioning compressor is driven by the compressor motor and the wheel end is driven by the main drive motor. When the output shaft disconnection device is engaged and the intermediate shaft disconnection device is engaged, the air conditioning compressor and wheel end are driven by the main drive motor and the compressor motor together.

3. The electric drive integrated air conditioning control method according to claim 1, characterized in that, The step of determining the current drive mode and current compressor drive torque based on the current vehicle operating conditions, the compressor working fluid flow requirement, and the compressor output power includes: If the current vehicle operating condition is a parked idling condition, then the first minimum total power consumption is calculated based on the compressor working fluid flow requirement and the compressor output power; The first target torque distribution combination is determined by the first torque distribution combination corresponding to the first minimum total power consumption. The first target compressor motor torque and the first target main drive motor torque are determined based on the first target torque distribution combination. The current driving mode and the current compressor driving torque are determined based on the torque of the first target compressor motor and the torque of the first target main drive motor.

4. The electric drive integrated air conditioning control method according to claim 3, characterized in that, The step of calculating the first minimum total power consumption based on the compressor working fluid flow requirement and the compressor output power includes: Based on the compressor working fluid flow requirements, a first numerical combination of different compressor displacement and compressor speed is determined; Based on the first numerical combination, the compressor working fluid flow requirement, and the compressor output power, calculate the first compressor input torque corresponding to each first numerical combination; The input torque of the first compressor is distributed to obtain multiple first torque distribution combinations of the first compressor motor torque and the first main drive motor torque; The power of the first compressor motor is calculated based on the torque of the first compressor motor, and the power of the first main drive motor is calculated based on the torque of the first main drive motor. Based on the power of the first compressor motor and the power of the first main drive motor, calculate the total power consumption of the first combination corresponding to each of the first torque distribution combinations; The first combination with the smallest total power consumption is determined as the first minimum total power consumption.

5. The electric drive integrated air conditioning control method according to claim 3, characterized in that, The step of determining the current drive mode and current compressor drive torque based on the first target compressor motor torque and the first target main drive motor torque includes: When the torque of the first target main drive motor is 0, the current drive mode is determined to be the first drive mode, and the current compressor drive torque is determined to be the torque of the first target compressor motor. When the torque of the first target main drive motor is not 0, the current driving mode is determined to be the second driving mode, and the current compressor driving torque is determined to be the torque of the first target compressor motor and the torque of the first target main drive motor; wherein, the current compressor driving torque is obtained by optimizing the minimum power consumption and distributing the torque between the torque of the first target compressor motor and the torque of the first target main drive motor; The first driving method is that the air conditioner compressor is driven solely by the compressor motor, while the second driving method is that the air conditioner compressor is driven jointly by the main drive motor and the compressor motor.

6. The electric drive integrated air conditioning control method according to claim 1, characterized in that, The step of determining the current drive mode and current compressor drive torque based on the current vehicle operating conditions, the compressor working fluid flow requirement, and the compressor output power includes: If the current vehicle operating condition is a start-up and low-speed driving condition, then the current drive mode is determined to be the air conditioning compressor driven by the compressor motor and the wheel end driven by the main drive motor; Based on the compressor working fluid flow requirements, a second numerical combination of different compressor displacement and compressor speed is determined; Based on the second numerical combination, the compressor working fluid flow requirement, and the compressor output power, calculate the second compressor input torque corresponding to each second numerical combination; The second compressor motor torque corresponding to each of the second numerical combinations is determined based on the input torque of the second compressor. Calculate the power of the second compressor motor corresponding to each combination of the second values ​​based on the torque of the second compressor motor. The second compressor motor power with the smallest value is determined as the second minimum total power consumption. The torque of the second compressor motor corresponding to the second minimum total power consumption is determined as the current compressor drive torque.

7. The electric drive integrated air conditioning control method according to claim 1, characterized in that, The step of determining the current drive mode and current compressor drive torque based on the current vehicle operating conditions, the compressor working fluid flow requirement, and the compressor output power includes: If the current vehicle operating condition is a medium-to-high speed driving condition, then the compressor drive mode is determined to be either the third drive mode or the fourth drive mode; wherein, the third drive mode is that the air conditioning compressor is driven by the compressor motor, and the fourth drive mode is that the air conditioning compressor is driven by both the compressor motor and the main drive motor. The wheel-end speed and wheel-end power demand are obtained based on the current vehicle operating conditions. Based on the compressor working fluid flow requirement and the compressor output power, calculate the third minimum total power consumption under the third drive mode; Calculate the target main drive motor power under the third drive mode based on the wheel end speed and the wheel end power requirement. Calculate the minimum power consumption of the third drive mode based on the third minimum total power consumption and the target main drive motor power; Based on the wheel end speed, the wheel end power requirement, the compressor working fluid flow requirement, and the compressor output power, calculate the minimum power consumption of the fourth drive mode under the fourth drive mode; When the minimum power consumption of the third driving mode is not greater than the minimum power consumption of the fourth driving mode, the current driving mode is determined to be the third driving mode, and the current compressor driving torque is determined according to the minimum power consumption of the third driving mode. When the minimum power consumption of the third drive mode is greater than the minimum power consumption of the fourth drive mode, the current drive mode is determined to be the fourth drive mode, and the current compressor drive torque is determined according to the minimum power consumption of the fourth drive mode.

8. The electric drive integrated air conditioning control method according to claim 7, characterized in that, The step of calculating the third minimum total power consumption under the third drive mode based on the compressor working fluid flow requirement and the compressor output power includes: Based on the compressor working fluid flow requirements, a third numerical combination of different compressor displacement and compressor speed is determined; Based on the third numerical combination, the compressor working fluid flow requirement, and the compressor output power, calculate the third compressor input torque corresponding to each third numerical combination; The third compressor motor torque corresponding to each of the third numerical combinations is determined based on the input torque of the third compressor. Calculate the power of the third compressor motor corresponding to each of the third numerical combinations based on the torque of the third compressor motor; The third compressor motor power with the smallest value is determined as the third minimum total power consumption under the third drive mode.

9. The electric drive integrated air conditioning control method according to claim 7, characterized in that, The step of calculating the minimum power consumption of the fourth drive mode under the fourth drive mode based on the wheel end speed, the wheel end power demand, the compressor working fluid flow demand, and the compressor output power includes: Calculate the wheel end torque based on the wheel end rotation speed and the wheel end power requirement; The second-stage transmission efficiency and the second-stage transmission ratio are determined based on the wheel end torque and the wheel end speed. Calculate the output wheel end torque of the intermediate shaft based on the wheel end torque, the second-stage transmission efficiency, and the second-stage transmission ratio; The intermediate shaft speed is calculated based on the wheel end speed and the second-stage transmission ratio. Calculate the input torque of the intermediate shaft compressor based on the compressor output power and the intermediate shaft speed; Calculate the total torque of the intermediate shaft based on the output wheel end torque of the intermediate shaft and the input torque of the intermediate shaft compressor; The total torque of the intermediate shaft is distributed to obtain a second torque distribution combination of multiple compressor motor output torque distribution values ​​and main drive motor path output torque distribution values. The power of the second compressor motor is calculated based on the output torque distribution value of the compressor motor, and the power of the second main drive motor is calculated based on the output torque distribution value of the main drive motor path. Based on the power of the second compressor motor and the power of the second main drive motor, calculate the total power consumption of the second combination corresponding to each second torque distribution combination; The minimum total power consumption of the second combination with the smallest value is determined as the minimum power consumption of the fourth drive mode.

10. An electrically driven integrated air conditioning control device, characterized in that, The electric-driven integrated air conditioning control device includes: The acquisition unit is used to acquire the compressor working fluid flow requirement, compressor output power, and vehicle motion parameters; The first determining unit is used to determine the current vehicle operating condition based on the vehicle motion parameters; The second determining unit is used to determine the current driving mode and the current compressor driving torque based on the current vehicle operating condition, the compressor working fluid flow requirement and the compressor output power. A drive unit is used to drive the vehicle's air conditioning compressor according to the current drive mode and the current compressor drive torque; The acquisition unit includes: The first acquisition subunit is used to acquire air conditioning demand parameters and vehicle motion parameters; The first determining subunit is used to determine the compressor working fluid flow requirement and compressor output power based on the air conditioning demand parameters. The air conditioning requirements parameters include at least the air conditioning mode, air conditioning set temperature, outside temperature, front cabin air conditioning fan speed, passenger cabin air conditioning inlet and outlet air temperature, passenger cabin air conditioning inlet and outlet air volume, battery cell temperature, battery water temperature, air conditioning working fluid temperature, and air conditioning output pressure difference. The vehicle motion parameters include at least the vehicle gear, vehicle speed, and required torque at the vehicle wheel ends; Specifically, the first determining unit is used to disconnect the output shaft disconnect device and determine the current vehicle operating condition as a parking idle condition when it is determined from the vehicle motion parameters that the vehicle is in a parking state and the wheel end required torque is 0. The first determining unit is further configured to, when determining that the vehicle is in a stopped state based on the vehicle motion parameters and the wheel end torque requirement is greater than 0, disconnect the intermediate shaft disconnect device, and in conjunction with the output shaft disconnect device, determine that the current vehicle operating condition is the starting and low-speed driving condition; or when detecting that the vehicle speed increases from 0 and the intermediate shaft rotation speed is not greater than the maximum rotation speed threshold, disconnect the intermediate shaft disconnect device, and in conjunction with the output shaft disconnect device, determine that the current vehicle operating condition is the starting and low-speed driving condition. The first determining unit is further configured to, when the intermediate shaft speed is detected to be greater than the maximum speed threshold based on the vehicle motion parameters, combine with the output shaft disconnection device and determine that the current vehicle operating condition is a medium-to-high speed driving condition.

11. 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 electric drive integrated air conditioning control method according to any one of claims 1 to 9.

12. A readable storage medium, characterized in that, The readable storage medium stores a computer program, which, when executed by a processor, performs the electric drive integrated air conditioning control method according to any one of claims 1 to 9.

13. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, performs the electric drive integrated air conditioning control method as described in any one of claims 1 to 9.

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