Electric vehicle integrated electric drive system and control method thereof

Abstract

The application relates to the technical field of electric driving, and provides an integrated electric driving system of an electric vehicle and a control method thereof. The integrated electric driving system of the electric vehicle comprises an assembly unit, a speed change unit, a first clutch unit and an air conditioner compressor body; the assembly unit is coaxially connected with the speed change unit, the speed change unit is coaxially connected with the first clutch unit, and the first clutch unit is coaxially connected with the air conditioner compressor body; the assembly unit is used for: determining that a starting request for the air conditioner compressor body is received, acquiring a current working condition of a vehicle carrying the integrated electric driving system of the electric vehicle; determining that the current working condition meets a preset working condition, controlling the first clutch unit to be closed, so as to control the air conditioner compressor body to operate through the speed change unit. The integrated electric driving system of the electric vehicle and the control method thereof provided in the application can realize flexible regulation and control of power energy and improve the energy efficiency of the whole vehicle.

Description

Technical Field

[0001] This application relates to the field of electric drive technology, specifically to an integrated electric drive system for electric vehicles and its control method. Background Technology

[0002] With the rapid development of new energy vehicles, the energy consumption targets for electric vehicles have become increasingly stringent, and the improvement of vehicle energy efficiency technology has gradually become a research hotspot. In the field of electric drive system technology, high voltage and integration of the system have become the mainstream of platform technology development.

[0003] In related technologies, there is an integrated electric drive system for electric vehicles that directly connects the air conditioning compressor to a three-in-one assembly unit consisting of a motor, electronic control, and differential lock, with the motor of the assembly unit driving the air conditioning compressor. However, in practical applications, it has been found that this method directly drives the air conditioning compressor when the assembly unit starts, making it impossible to flexibly control the power energy and affecting the overall vehicle's energy efficiency. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in related technologies. To this end, this application proposes an integrated electric drive system for electric vehicles and its control method, which enables flexible regulation of power energy and improves the overall vehicle energy efficiency.

[0005] An integrated electric drive system for electric vehicles according to a first aspect embodiment of this application includes an assembly unit (100), a transmission unit (200), a first clutch unit (300), and an air conditioning compressor body (400);

[0006] The assembly unit (100) is coaxially connected to the transmission unit (200), the transmission unit (200) is coaxially connected to the first clutch unit (300), and the first clutch unit (300) is coaxially connected to the air conditioning compressor body (400).

[0007] The assembly unit is used for:

[0008] It is confirmed that a start request for the air conditioning compressor body has been received, and the current operating status of the vehicle equipped with the electric vehicle integrated electric drive system is obtained;

[0009] If the current operating condition is determined to meet the preset operating condition, the first clutch unit is controlled to close, so as to control the operation of the air conditioning compressor body through the speed change unit.

[0010] The electric vehicle integrated electric drive system provided in this application embodiment connects a transmission unit and a first clutch unit between the assembly unit and the air conditioning compressor body unit. When a start request for the air conditioning compressor body is received, if it is determined that the current operating condition of the vehicle equipped with the electric vehicle integrated electric drive system meets the preset operating condition, the first clutch unit is closed, and the assembly unit drives the air conditioning compressor body to rotate through the transmission unit, thereby achieving linkage operation. Thus, when the vehicle is in a specified operating condition, the air conditioning compressor body is driven by the assembly unit, realizing flexible control of kinetic energy and electrical energy, enabling the vehicle to operate in a more energy-efficient state and improving the overall vehicle energy efficiency level.

[0011] According to one embodiment of this application, the assembly unit is specifically used for:

[0012] The current operating condition is determined to meet the preset operating condition. Based on the cooling capacity power requirement in the start request, the output power is determined so that after controlling the first clutch unit to close, the speed change unit is controlled to drive the air conditioning compressor body to run based on the output power.

[0013] According to one embodiment of this application, the assembly unit is specifically used for:

[0014] Determine that the current operating condition meets the preset operating condition, and obtain the compressor torque requirement value corresponding to the cooling capacity power requirement based on the cooling capacity power requirement;

[0015] Based on the compressor torque requirement and the current output torque of the assembly unit, determine the target output torque of the assembly unit;

[0016] The output power is determined based on the target output torque and the current speed of the drive motor in the assembly unit.

[0017] According to one embodiment of this application, the assembly unit is further configured to:

[0018] If the current operating condition is determined to be inconsistent with the preset operating condition, the first clutch unit is controlled to be in the disengaged state.

[0019] According to one embodiment of this application, it also includes:

[0020] Air conditioning compressor drive unit (410);

[0021] The air conditioner compressor drive unit (410) is connected to the air conditioner compressor body (400);

[0022] The assembly unit is also used for:

[0023] If the current operating condition is determined to be unsatisfactory, the air conditioning compressor body is controlled to operate via the air conditioning compressor drive unit.

[0024] According to one embodiment of this application, the air conditioning compressor drive unit (410) includes an air conditioning compressor controller (410b) and an air conditioning compressor drive motor (410a);

[0025] The air conditioning compressor controller (410b) is integrated into the assembly unit (100).

[0026] The control method for an integrated electric drive system for electric vehicles according to a second aspect of this application, applied to an assembly unit of the integrated electric drive system for electric vehicles described in any of the above embodiments, includes:

[0027] It is confirmed that a start request for the air conditioning compressor body has been received, and the current operating status of the vehicle equipped with the electric vehicle integrated electric drive system is obtained;

[0028] If the current operating condition is determined to meet the preset operating condition, the first clutch unit is controlled to close, so as to control the operation of the air conditioning compressor body through the speed change unit.

[0029] The control device for an integrated electric drive system for electric vehicles according to a third aspect embodiment of this application, applied to an assembly unit of the integrated electric drive system for electric vehicles according to any of the above embodiments, includes:

[0030] The vehicle operating condition acquisition subunit is used to determine that a start request for the air conditioning compressor body has been received and to acquire the current operating condition of the vehicle equipped with the electric vehicle integrated electric drive system.

[0031] The drive system control subunit is used to determine that the current operating condition meets the preset operating condition, and control the first clutch unit to close so as to control the operation of the air conditioning compressor body through the speed change unit.

[0032] An electronic device according to a third aspect of this application includes a processor and a memory storing a computer program, wherein the processor executes the computer program to implement the control method of the electric vehicle integrated electric drive system described in the above embodiments.

[0033] The electric vehicle according to the fourth aspect of this application includes an integrated electric drive system for electric vehicles as described in any of the above embodiments.

[0034] The above-described one or more technical solutions in the embodiments of this application have at least one of the following technical effects:

[0035] By connecting a transmission unit and a first clutch unit between the assembly unit and the air conditioning compressor body unit, when a start request for the air conditioning compressor body is received, if it is determined that the current operating condition of the vehicle equipped with the electric vehicle integrated electric drive system meets the preset operating condition, the first clutch unit is closed, and the assembly unit drives the air conditioning compressor body to rotate through the transmission unit to achieve linkage operation. Thus, when the vehicle is in a specified operating condition, the air conditioning compressor body is driven by the assembly unit, which enables flexible control of kinetic energy and electrical energy, allowing the vehicle to operate in a more energy-efficient state and improving the overall vehicle energy efficiency level. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the structure of the integrated electric drive system for electric vehicles provided in the embodiments of this application;

[0038] Figure 2 This is a schematic diagram of the structure of the assembly unit in the electric vehicle integrated electric drive system provided in the embodiments of this application;

[0039] Figure 3 This is a schematic diagram of the connection structure between the transmission unit and the assembly unit provided in the embodiments of this application;

[0040] Figure 4 This is another schematic diagram of the connection structure between the transmission unit and the assembly unit provided in the embodiments of this application;

[0041] Figure 5 This is a schematic diagram of the structure of an integrated electric drive system for electric vehicles provided in another embodiment of this application;

[0042] Figure 6 This is a schematic diagram of the structure of the electric vehicle integrated electric drive system formed by connecting the air conditioner compressor drive unit and the air conditioner compressor body according to the embodiments of this application;

[0043] Figure 7 This is another structural schematic diagram of the electric vehicle integrated electric drive system formed by connecting the air conditioner compressor drive unit and the air conditioner compressor body according to the embodiments of this application;

[0044] Figure 8 This is a flowchart illustrating the control method for an integrated electric drive system for electric vehicles provided in an embodiment of this application.

[0045] Figure 9This is a schematic diagram of the structure of the control device for the integrated electric drive system of an electric vehicle provided in an embodiment of this application;

[0046] Figure 10 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] The electric vehicle integrated electric drive system and its control method provided in this application will be described in detail and explained through several specific embodiments.

[0049] In one embodiment, an integrated electric drive system for an electric vehicle is provided. For example... Figure 1 As shown, this embodiment provides an integrated electric drive system and its control method for an electric vehicle, including:

[0050] The assembly unit (100), the transmission unit (200), the first clutch unit (300), and the air conditioning compressor body (400);

[0051] The assembly unit (100) is coaxially connected to the transmission unit (200);

[0052] The transmission unit (200) is coaxially connected to the first clutch unit (300);

[0053] The first clutch unit (300) is coaxially connected to the air conditioner compressor body (400).

[0054] In one embodiment, the assembly unit (100) is an integrated assembly unit combining a motor, electronic control, and differential reduction. The speed change unit (200) is used to achieve speed matching between the assembly unit (100) and the air conditioning compressor body unit (400), and it can adjust the speed ratio according to actual needs, such as the speed range of the main drive motor and the compressor body. The first clutch unit (300) is used to achieve power coupling control between the assembly unit (100) and the air conditioning compressor body unit (400), and it can control the connection or disconnection of power according to the power coupling requirements between the assembly unit (100) and the air conditioning compressor body (400). The air conditioning compressor body (400) is used to compress gas, realizing the conversion of air conditioning electrical energy into heat energy. It is typically a scroll compression method, and the gas medium can be conventional refrigerant or CO2. It is controlled by the speed change unit (200) and the first clutch unit (300) and coaxially driven by the assembly unit (100).

[0055] The assembly unit (100) is used for:

[0056] Upon receiving a start request for the air conditioning compressor body, the system obtains the current operating condition of the vehicle equipped with the electric vehicle integrated electric drive system; upon determining that the current operating condition meets the preset operating condition, the system controls the first clutch unit to close, so as to control the operation of the air conditioning compressor body through the transmission unit.

[0057] By connecting a transmission unit and a first clutch unit between the assembly unit and the air conditioning compressor body unit, when a start request for the air conditioning compressor body is received, if it is determined that the current operating condition of the vehicle equipped with the electric vehicle integrated electric drive system meets the preset operating condition, the first clutch unit is closed, and the assembly unit drives the air conditioning compressor body to rotate through the transmission unit to achieve linkage operation. Thus, when the vehicle is in a specified operating condition, the air conditioning compressor body is driven by the assembly unit, which enables flexible control of kinetic energy and electrical energy, allowing the vehicle to operate in a more energy-efficient state and improving the overall vehicle energy efficiency level.

[0058] In one embodiment, such as Figure 2 As shown, the assembly unit (100) includes an electric drive controller (101) for controlling the drive motor (102), the drive motor (102), and a differential reduction assembly (103); the differential reduction assembly (103) consists of a differential and a reducer, including a first transmission structure (103c), a second transmission structure (103d), and a third transmission structure (103e); the first transmission structure (103c) is connected to the drive motor (102) through a first transmission shaft (103a), and the second transmission structure (103d) is connected to the third transmission structure (103e) through a second transmission shaft (103b).

[0059] The drive motor (102) can be a permanent magnet synchronous motor. The first transmission structure (103c) can be a drive gear or drive pulley, etc., and the first transmission shaft (103a) can be the main transmission shaft. The second transmission structure (103d) can be a driven gear or driven pulley, etc., to drive the second transmission structure (103d) through the first transmission structure (103c). The third transmission structure (103e) can be a transmission gear or transmission pulley, etc. The second transmission structure (103d) and the third transmission structure (103e) are mechanically coupled through the second transmission shaft (103b), i.e., the intermediate shaft, so that the second transmission structure (103d) drives the third transmission structure (103e), thereby realizing that the drive motor (102) drives each transmission structure in the differential reduction assembly (103) coaxially through gear linkage or traditional pulley method.

[0060] In one embodiment, such as Figure 3 As shown, the transmission unit (200) can be connected to the drive motor (102) via the first transmission shaft (103a), that is, the drive motor (102) can directly drive the first transmission structure (103c) and the transmission unit (200) via the first transmission shaft (103a). The transmission unit (200) can be a gearbox.

[0061] In addition to connecting the transmission unit (200) to the drive motor (102) via the first transmission shaft (103a), in one embodiment, as... Figure 4 As shown, the transmission unit (200) is connected to the third transmission structure (103e) via the second transmission shaft (103b). The power coupling of the air conditioning compressor body (400) is then achieved through the second transmission shaft (103b). Compared to the method where the transmission unit (200) can be connected to the drive motor (102) via the first transmission shaft (103a), connecting the transmission unit (200) to the third transmission structure (103e) via the second transmission shaft (103b) simplifies structural design, provides a more reasonable gear matching, and is more practical.

[0062] In one embodiment, such as Figure 5 As shown, except Figure 1 In addition to the structure shown, the integrated electric drive system for electric vehicles also includes:

[0063] Air conditioning compressor drive unit (410);

[0064] The air conditioner compressor drive unit (410) is connected to the air conditioner compressor body (400);

[0065] The assembly unit (100) is used to connect to the wheel end (500).

[0066] The air conditioning compressor drive unit (410) includes an air conditioning compressor controller (410b) and an air conditioning compressor drive motor (410a). The air conditioning compressor drive motor (410a) can be a permanent magnet synchronous motor; the air conditioning compressor controller (410b) can be a motor controller that implements permanent magnet synchronous motor control. The air conditioning compressor body (400) is controlled by the air conditioning compressor drive unit (410) to achieve speed regulation control; it can also be controlled by the speed change unit (200) and the first clutch unit (300), and coaxially driven by the drive motor (102) in the assembly unit (100).

[0067] In one embodiment, such as Figure 6 As shown in Figure 7, when the electric vehicle integrated electric drive system includes an air conditioning compressor drive unit (410), it is connected to the wheel end (500) through a third transmission structure (103e). In this case, the electric vehicle integrated electric drive system retains the original air conditioning compressor assembly unit, and at the same time, integrates and couples its mechanical and electrical parts with the assembly unit in multiple physical ways, so that the wheel end (500) can be driven by the drive motor and the air conditioning compressor assembly. In turn, it can be comprehensively adjusted through the vehicle energy management system, and rationally allocate the kinetic energy and electrical energy of the drive system according to the different operating conditions of the vehicle, so that the vehicle operates in the optimal energy efficiency state and maximizes the overall vehicle energy efficiency level.

[0068] The air conditioning compressor controller (410b) of the air conditioning compressor drive unit (410) can be integrated into the electric drive controller (101) of the assembly unit (100) to achieve integrated control.

[0069] In one embodiment, the preset operating conditions include the vehicle speed reaching a preset speed and the vehicle load being less than a preset load. When the electric drive controller of the assembly unit receives a start request for the air conditioning compressor, it enters the vehicle operating condition determination stage to determine whether the current vehicle speed is greater than or equal to the preset speed V. spd Furthermore, the vehicle is operating under a load less than the preset load. If the vehicle's current speed is greater than or equal to the preset speed V... spd If the vehicle's load is less than the preset load, the first clutch unit can be closed via the electric drive controller, causing the electric drive controller to drive the air conditioning compressor to rotate, thus achieving coordinated operation. The preset speed V... spd The preset load can be set according to the actual situation.

[0070] To achieve more efficient energy regulation, in one embodiment, the electric drive controller of the power assembly unit obtains the cooling capacity power demand P of the air conditioning compressor body from the start request when determining the vehicle's preset operating conditions. EAC_Req According to the cooling capacity power requirement P EAC_ReqDetermine the corresponding output power P' DCU_Req After the first clutch unit is closed, the speed control unit drives the air conditioning compressor body to run according to the output power.

[0071] Among them, the cooling capacity power requirement P EAC_Req With output power P' DCU_Req The corresponding relationships can be pre-recorded experimentally in a mapping table. This mapping table records the output power corresponding to different cooling capacity power requirements. After obtaining the cooling capacity power requirement P... EAC_Req At that time, the corresponding output power P' can be determined by looking up a table. DCU_Req This adjusts the current output power of the electric drive controller in the powertrain unit to the output power P'. DCU_Req After the first clutch unit is closed, the output power P' is used to... DCU_Req The speed control unit drives the air conditioning compressor body to operate.

[0072] In one embodiment, the output power P' DCU_Req The acquisition may also include:

[0073] Determine that the current operating condition meets the preset operating condition, and obtain the compressor torque requirement value corresponding to the cooling capacity power requirement based on the cooling capacity power requirement;

[0074] Based on the compressor torque requirement and the current output torque of the assembly unit, determine the target output torque of the assembly unit;

[0075] The output power is determined based on the target output torque and the current speed of the drive motor in the assembly unit.

[0076] For the air conditioner compressor itself, it can be designed for different drive torques M EAC Set the corresponding cooling capacity requirement P based on the given cooling capacity power. EAC If the current operating conditions are determined to meet the preset operating conditions, then the cooling capacity power requirement P of the air conditioner compressor body is obtained. EAC_Req Then, based on the current cooling capacity power requirement P EAC_Req Obtain the corresponding compressor torque requirement value M. EAC_Req .

[0077] or,

[0078] For the air conditioner compressor itself, its calibration is performed at different motor speeds N. DCU Different driving torques M EAC The following is a MAP table of cooling capacity and power requirements: P EAC =f(N) EAC M EAC), and stored in the electric drive controller of the assembly unit, where P EAC This represents the cooling capacity power requirement. If the current operating conditions are determined to meet the preset operating conditions, then the cooling capacity power requirement P of the air conditioner compressor body is obtained. EAC_Req Then, based on the current motor speed N of the drive motor of the current assembly unit... DCU and cooling capacity power demand P EAC_Req Locate the cooling capacity power demand MAP table to obtain the compressor torque demand value M from the cooling capacity power demand MAP table. EAC_Req .

[0079] After obtaining the compressor torque requirement value M EAC_Req Then, the target output torque M' of the drive motor of the assembly unit is obtained. DCU_Req =M DCU_Act +M EAC_Req M DCU_Act This represents the output torque of the drive motor of the current assembly unit. The target output torque M' is obtained during the acquisition process. DCU_Req Then, the output power P' of the drive motor of the assembly unit can be updated. DCU_Req =C*M' DCU_Req *N DCU .

[0080] After the first clutch unit is closed, if a shutdown request for the air conditioning compressor body is received, the first clutch unit is disengaged, i.e., the first clutch unit is disconnected. At the same time, the output power of the drive motor is restored to the power value before the first clutch unit was closed, so as to restore the normal control before the first clutch unit was closed.

[0081] In one embodiment, when a start request for the air conditioner compressor body is received, if the current operating condition does not meet the preset operating condition, the first clutch unit is controlled to be in a disengaged state, that is, the first clutch unit is disconnected.

[0082] If the electric vehicle's integrated electric drive system includes an air conditioning compressor drive unit (410), then upon receiving a start request for the air conditioning compressor body, if the current operating conditions do not meet the preset operating conditions, the system switches to the air conditioning compressor drive unit control mode, using the air conditioning compressor drive unit to control the operation of the air conditioning compressor body. If the air conditioning compressor controller (410b) of the air conditioning compressor drive unit (410) is integrated into the assembly unit (100), then the assembly unit (100) can directly drive the air conditioning compressor controller (410b) to control the operation of the air conditioning compressor body.

[0083] In one embodiment, such as Figure 8As shown, a control method for an integrated electric drive system for electric vehicles is provided, which is applied to the assembly unit of the integrated electric drive system for electric vehicles as described in any of the above embodiments.

[0084] The control method includes:

[0085] Step 101: Determine that a start request for the air conditioning compressor body has been received, and obtain the current operating status of the vehicle equipped with the electric vehicle integrated electric drive system;

[0086] Step 102: Determine that the current operating condition meets the preset operating condition, and control the first clutch unit to close so as to control the operation of the air conditioning compressor body through the speed change unit.

[0087] By connecting a transmission unit and a first clutch unit between the assembly unit and the air conditioning compressor body unit, when a start request for the air conditioning compressor body is received, if it is determined that the current operating condition of the vehicle equipped with the electric vehicle integrated electric drive system meets the preset operating condition, the first clutch unit is closed, and the assembly unit drives the air conditioning compressor body to rotate through the transmission unit to achieve linkage operation. Thus, when the vehicle is in a specified operating condition, the air conditioning compressor body is driven by the assembly unit, which enables flexible control of kinetic energy and electrical energy, allowing the vehicle to operate in a more energy-efficient state and improving the overall vehicle energy efficiency level.

[0088] In one embodiment, determining that the current operating condition meets a preset operating condition and controlling the first clutch unit to close, so as to control the operation of the air conditioning compressor body through the speed transmission unit, includes:

[0089] The current operating condition is determined to meet the preset operating condition. Based on the cooling capacity power requirement in the start request, the output power is determined so that after controlling the first clutch unit to close, the speed change unit is controlled to drive the air conditioning compressor body to run based on the output power.

[0090] In one embodiment, determining that the current operating condition meets a preset operating condition, and determining the output power based on the cooling capacity power requirement in the start-up request, includes:

[0091] Determine that the current operating condition meets the preset operating condition, and obtain the compressor torque requirement value corresponding to the cooling capacity power requirement based on the cooling capacity power requirement;

[0092] Based on the compressor torque requirement and the current output torque of the assembly unit, determine the target output torque of the assembly unit;

[0093] The output power is determined based on the target output torque and the current speed of the drive motor in the assembly unit.

[0094] In one embodiment, the control method further includes:

[0095] If the current operating condition is determined to be inconsistent with the preset operating condition, the first clutch unit is controlled to be in the disengaged state.

[0096] In one embodiment, the control method further includes:

[0097] If the current operating condition is determined to be unsatisfactory, the air conditioning compressor body is controlled to operate via the air conditioning compressor drive unit.

[0098] In one embodiment, such as Figure 9 As shown, a control device for an integrated electric drive system for electric vehicles is provided, which is applied to the assembly unit of the integrated electric drive system for electric vehicles as described in any of the above embodiments.

[0099] The control device includes:

[0100] The vehicle operating condition acquisition subunit 210 is used to determine that a start request for the air conditioning compressor body has been received and to acquire the current operating condition of the vehicle equipped with the electric vehicle integrated electric drive system.

[0101] The drive system control subunit 220 is used to determine that the current operating condition meets the preset operating condition, and control the first clutch unit to close so as to control the operation of the air conditioning compressor body through the speed change unit.

[0102] In one embodiment, the drive system control subunit 220 is specifically used for:

[0103] The current operating condition is determined to meet the preset operating condition. Based on the cooling capacity power requirement in the start request, the output power is determined so that after controlling the first clutch unit to close, the speed change unit is controlled to drive the air conditioning compressor body to run based on the output power.

[0104] In one embodiment, the drive system control subunit 220 is specifically used for:

[0105] Determine that the current operating condition meets the preset operating condition, and obtain the compressor torque requirement value corresponding to the cooling capacity power requirement based on the cooling capacity power requirement;

[0106] Based on the compressor torque requirement and the current output torque of the assembly unit, determine the target output torque of the assembly unit;

[0107] The output power is determined based on the target output torque and the current speed of the drive motor in the assembly unit.

[0108] In one embodiment, the drive system control subunit 220 is further configured to:

[0109] If the current operating condition is determined to be inconsistent with the preset operating condition, the first clutch unit is controlled to be in the disengaged state.

[0110] In one embodiment, the drive system control subunit 220 is further configured to:

[0111] If the current operating condition is determined to be unsatisfactory, the air conditioning compressor body is controlled to operate via the air conditioning compressor drive unit.

[0112] Figure 10 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 10 As shown, the electronic device may include: a processor 810, a communication interface 820, a memory 830, and a communication bus 840, wherein the processor 810, the communication interface 820, and the memory 830 communicate with each other via the communication bus 840. The processor 810 can call a computer program in the memory 830 to execute a control method for the integrated electric drive system of an electric vehicle, such as including:

[0113] It is confirmed that a start request for the air conditioning compressor body has been received, and the current operating status of the vehicle equipped with the electric vehicle integrated electric drive system is obtained;

[0114] If the current operating condition is determined to meet the preset operating condition, the first clutch unit is controlled to close, so as to control the operation of the air conditioning compressor body through the speed change unit.

[0115] Furthermore, the logical instructions in the aforementioned memory 830 can be implemented as software functional units and, when sold or used as independent vehicles, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software vehicle. This computer software vehicle is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0116] On the other hand, embodiments of this application also provide a storage medium, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the control method of the electric vehicle integrated electric drive system provided in the above embodiments, for example including:

[0117] It is confirmed that a start request for the air conditioning compressor body has been received, and the current operating status of the vehicle equipped with the electric vehicle integrated electric drive system is obtained;

[0118] If the current operating condition is determined to meet the preset operating condition, the first clutch unit is controlled to close, so as to control the operation of the air conditioning compressor body through the speed change unit.

[0119] In one embodiment, an electric vehicle is also provided, including the electric vehicle integrated electric drive system described in any of the above embodiments.

[0120] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0121] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software vehicle. This computer software vehicle can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0122] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An integrated electric drive system for electric vehicles, characterized in that, It includes an assembly unit (100), a transmission unit (200), a first clutch unit (300), and an air conditioning compressor body (400). The assembly unit (100) is coaxially connected to the transmission unit (200), the transmission unit (200) is coaxially connected to the first clutch unit (300), and the first clutch unit (300) is coaxially connected to the air conditioning compressor body (400). The assembly unit is used for: It is confirmed that a start request for the air conditioning compressor body has been received, and the current operating status of the vehicle equipped with the electric vehicle integrated electric drive system is obtained; The assembly unit is specifically used to: determine that the current operating condition meets the preset operating condition, control the first clutch unit to close, so as to control the operation of the air conditioner compressor body through the speed change unit; the assembly unit is specifically used to: determine that the current operating condition meets the preset operating condition, determine the output power according to the cooling power requirement in the start request, so as to control the speed change unit to drive the air conditioner compressor body to run according to the output power after controlling the first clutch unit to close; The assembly unit is specifically used for: determining that the current operating condition meets the preset operating condition; obtaining the compressor torque requirement value corresponding to the cooling capacity power requirement based on the cooling capacity power requirement; and determining the target output torque of the assembly unit based on the compressor torque requirement value and the current output torque of the assembly unit. The output power is determined based on the target output torque and the current speed of the drive motor in the assembly unit.

2. The integrated electric drive system for electric vehicles according to claim 1, characterized in that, The assembly unit is also used for: If the current operating condition is determined to be inconsistent with the preset operating condition, the first clutch unit is controlled to be in the disengaged state.

3. The integrated electric drive system for electric vehicles according to claim 1 or 2, characterized in that, Also includes: Air conditioning compressor drive unit (410); The air conditioning compressor drive unit (410) is connected to the air conditioning compressor body (400); The assembly unit is also used for: If the current operating condition is determined to be unsatisfactory, the air conditioning compressor body is controlled to operate via the air conditioning compressor drive unit.

4. The electric vehicle integrated electric drive system according to claim 3, characterized in that, The air conditioning compressor drive unit (410) includes an air conditioning compressor controller (410b) and an air conditioning compressor drive motor (410a). The air conditioning compressor controller (410b) is integrated into the assembly unit (100).

5. A control method for an integrated electric drive system for an electric vehicle, characterized in that, An assembly unit applied to the electric vehicle integrated electric drive system as described in any one of claims 1-4; The method includes: It is confirmed that a start request for the air conditioning compressor body has been received, and the current operating status of the vehicle equipped with the electric vehicle integrated electric drive system is obtained; If the current operating condition is determined to meet the preset operating condition, the first clutch unit is controlled to close, so as to control the operation of the air conditioning compressor body through the speed change unit.

6. A control device for an integrated electric drive system of an electric vehicle, characterized in that, An assembly unit applied to the electric vehicle integrated electric drive system as described in any one of claims 1-4; The device includes: The vehicle operating condition acquisition subunit is used to determine that a start request for the air conditioning compressor body has been received and to acquire the current operating condition of the vehicle equipped with the electric vehicle integrated electric drive system. The drive system control subunit is used to determine that the current operating condition meets the preset operating condition, and control the first clutch unit to close so as to control the operation of the air conditioning compressor body through the speed change unit.

7. An electronic device comprising a processor and a memory storing a computer program, characterized in that, When the processor executes the computer program, it implements the control method of the electric vehicle integrated electric drive system according to claim 5.

8. An electric vehicle, characterized in that, Including the electric vehicle integrated electric drive system as described in any one of claims 1-4.

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