Control method, device and equipment of electronic oil pump and storage medium

Abstract

The invention discloses a control method, device and equipment of an electronic oil pump and a storage medium. The method is applied to an oil pump controller of a vehicle. The oil pump controller is in communication connection with a transmission controller and a high-pressure system controller of the vehicle. The control method comprises the steps that an oil pump control instruction sent by a transmission controller is obtained; oil pump operation data, transmission operation data sent by a transmission controller and high-pressure system operation data sent by a high-pressure system controller are obtained; and executing the oil pump control instruction when determining that the electronic oil pump is in a fault-free state based on the oil pump operation data, determining that the transmission is in a flow request state based on the transmission operation data, and determining that the high-pressure system is in a high-pressure power-on state based on the high-pressure system operation data. Therefore, an active and intelligent oil pump control strategy can be realized, and the operation efficiency of the electronic oil pump is improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle control, and particularly relates to a control method, device, equipment and storage medium for an electronic oil pump. Background Art

[0002] With the rapid development of the automotive industry and in response to the national policies on energy conservation, emission reduction and carbon balance, traditional fuel vehicles are gradually moving towards new energy vehicles, and the pace of electrification of the powertrain is accelerating. For example, as the power source of the drive motor thermal management module, the electronic oil pump can respond to the needs of drive motor cooling and lubrication in a timely manner as required, and increase the probability that the drive motor operates in the "comfortable temperature range".

[0003] In the related art, the transmission controller can directly send a control instruction to the electronic oil pump, and the oil pump controller of the electronic oil pump executes it. However, for the electronic oil pump, this control logic is relatively passive and rough, not intelligent enough, and there may be a problem of low operating efficiency of the electronic oil pump. Summary of the Invention

[0004] Embodiments of the present application provide a control method, device, equipment and storage medium for an electronic oil pump to implement an active and intelligent oil pump control strategy and improve the operating efficiency of the electronic oil pump.

[0005] In a first aspect, an embodiment of the present application provides a control method for an electronic oil pump, which is applied to an oil pump controller of a vehicle; the oil pump controller is communicatively connected to a transmission controller and a high-voltage system controller of the vehicle respectively; the control method includes:

[0006] Obtain an oil pump control instruction sent by the transmission controller;

[0007] Obtain oil pump operation data, transmission operation data sent by the transmission controller, and high-voltage system operation data sent by the high-voltage system controller;

[0008] When it is determined based on the oil pump operation data that the electronic oil pump is in a fault-free state, based on the transmission operation data that the transmission is in a flow request state, and based on the high-voltage system operation data that the high-voltage system is in a high-voltage power-on state, execute the oil pump control instruction.

[0009] Optionally, the oil pump operation data includes an execution reception signal for the oil pump control instruction; determining that the electronic oil pump is in a fault-free state based on the oil pump operation data includes:

[0010] If, in response to the oil pump control instruction, the instruction reception signal is returned to the transmission controller within a preset time period, it is determined that the electronic oil pump is in a fault-free state.

[0011] Optionally, the high-voltage system operation data includes the relay status data of the high-voltage system and the power supply status data of the high-voltage system; determining that the high-voltage system is in a high-voltage power-on state based on the high-voltage system operation data includes:

[0012] If the relay status data indicates that the relay of the high-voltage system is in an energized state, and the power supply status data of the high-voltage system indicates that the high-voltage system is in a powered-on state, then it is determined that the high-voltage system is in a high-voltage power-on state.

[0013] Optionally, the transmission operation data includes the pressure and flow signals of the main oil circuit; determining that the transmission is in a flow request state based on the transmission operation data includes:

[0014] If the pressure is greater than a preset pressure and the flow signal is a requested flow activation signal, then it is determined that the transmission is in a flow request state.

[0015] Optionally, executing the oil pump control instruction includes:

[0016] Collecting the motor rotor position of the electric oil pump;

[0017] Based on the motor speed position, driving the motor through a field-oriented control algorithm to execute the oil pump control instruction.

[0018] Optionally, the method further includes:

[0019] During the execution of the oil pump control instruction, obtaining new oil pump operation information;

[0020] Sending the new oil pump operation information to the transmission controller so that the transmission controller adjusts the oil pump control instruction according to the new oil pump operation information.

[0021] Optionally, the method further includes:

[0022] When the vehicle is in the first driving mode, controlling the electric oil pump to adjust the pressure of the main oil circuit of the transmission; the first driving mode is used to indicate that the vehicle is driven by an electric motor;

[0023] When the vehicle is in the second driving mode, controlling the electric oil pump to adjust the flow of the transmission; the second driving mode is used to indicate that the vehicle is driven by a combination of an electric motor and an engine.

[0024] In a second aspect, an embodiment of the present application provides a control device for an electric oil pump, which is applied to an oil pump controller of a vehicle; the oil pump controller is respectively communicatively connected to a transmission controller and a high-voltage system controller of the vehicle; the control device includes:

[0025] A first acquisition module, configured to acquire an oil pump control instruction sent by the transmission controller;

[0026] A second acquisition module, configured to acquire oil pump operation data, transmission operation data sent by the transmission controller, and high-voltage system operation data sent by the high-voltage system controller;

[0027] An execution module, configured to execute the oil pump control instruction when it is determined based on the oil pump operation data that the electric oil pump is in a fault-free state, based on the transmission operation data that the transmission is in a flow request state, and based on the high-voltage system operation data that the high-voltage system is in a high-voltage power-on state.

[0028] In a third aspect, an embodiment of the present application provides an electronic device, where the device includes: a processor, a memory, and a system bus;

[0029] The processor and the memory are connected through the system bus;

[0030] The memory is used to store one or more programs, and the one or more programs include instructions that, when executed by the processor, cause the processor to execute any implementation manner of the above control method for the electric oil pump.

[0031] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions run on an electronic device, the electronic device is caused to execute any implementation manner of the above control method for the electric oil pump.

[0032] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0033] In the embodiment of the present application, the control method of the electronic oil pump can be applied to the oil pump controller of a vehicle; the oil pump controller is communicatively connected to the transmission controller and the high-voltage system controller of the vehicle respectively. In this way, the oil pump controller can first obtain the oil pump control instruction sent by the transmission controller, and then obtain the oil pump operation data, the transmission operation data sent by the transmission controller, and the high-voltage system operation data sent by the high-voltage system controller. Thus, when it is determined that the electronic oil pump is in a fault-free state based on the oil pump operation data, the transmission is in a flow request state based on the transmission operation data, and the high-voltage system is in a high-voltage power-on state based on the high-voltage system operation data, the oil pump control instruction can be executed. In this way, before executing the oil pump control instruction, the oil pump controller can first deeply analyze the operation data of the electronic oil pump, the transmission, and the high-voltage system, and judge the working states of the electronic oil pump, the transmission, and the high-voltage system, so as to execute the oil pump control instruction when the working states of the three meet the preset states, thereby realizing an active and intelligent oil pump control strategy and improving the operation efficiency of the electronic oil pump. Description of the Drawings

[0034] Figure 1 It is a flowchart of a control method for an electronic oil pump provided by an embodiment of the present application;

[0035] Figure 2 It is a schematic diagram of an FOC algorithm provided by an embodiment of the present application;

[0036] Figure 3 It is a schematic diagram of a control process of an electronic oil pump provided by an embodiment of the present application;

[0037] Figure 4 It is a schematic structural diagram of a control device for an electronic oil pump provided by an embodiment of the present application. Detailed Embodiments

[0038] As described above, in the related art, the transmission controller can directly send a control instruction to the electronic oil pump, and the oil pump controller of the electronic oil pump is used to execute it. However, for the electronic oil pump, this control logic is relatively passive and rough, not intelligent enough, and there may be a problem of low operation efficiency of the electronic oil pump.

[0039] To solve the above problems, an embodiment of the present application provides a control method for an electronic oil pump. This control method for the electronic oil pump can be applied to the oil pump controller of a vehicle; the oil pump controller is respectively communicatively connected to the transmission controller and the high-voltage system controller of the vehicle. In this way, the oil pump controller can first obtain the oil pump control instruction sent by the transmission controller, and then obtain the oil pump operation data, the transmission operation data sent by the transmission controller, and the high-voltage system operation data sent by the high-voltage system controller. Thus, when it is determined based on the oil pump operation data that the electronic oil pump is in a fault-free state, based on the transmission operation data that the transmission is in a flow request state, and based on the high-voltage system operation data that the high-voltage system is in a high-voltage power-on state, the oil pump control instruction can be executed. In this way, before executing the oil pump control instruction, the oil pump controller can first deeply analyze the operation data of the electronic oil pump, the transmission, and the high-voltage system, and judge the working states of the electronic oil pump, the transmission, and the high-voltage system, so as to execute the oil pump control instruction when the working states of the three meet the preset states, thereby realizing an active and intelligent oil pump control strategy and improving the operation efficiency of the electronic oil pump.

[0040] It should be noted that the execution subject of the control method for the electronic oil pump in the embodiment of the present application is not limited either. For example, the control method for the electronic oil pump in the embodiment of the present application can be applied to data processing devices such as terminal devices or servers. Among them, the terminal device can be an electronic device such as a smart phone, a computer, a personal digital assistant (PDA), or a tablet computer. The server can be an independent server, a cluster server, or a cloud server.

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0042] Figure 1 It is a flowchart of a control method for an electronic oil pump provided by an embodiment of the present application. Combining Figure 1 As shown, the control method for the electronic oil pump provided by an embodiment of the present application is applied to the oil pump controller of a vehicle; the oil pump controller is respectively communicatively connected to the transmission controller and the high-voltage system controller of the vehicle. Correspondingly, the control method may include:

[0043] S101: Obtain the oil pump control instruction sent by the transmission controller.

[0044] In an embodiment of the present application, the oil pump controller, the transmission controller, and the high-voltage system controller can be communicatively connected in coordination through a Controller Area Network (CAN) bus. Specifically, if the connection is successful, the oil pump control instruction sent by the transmission controller can wake up the oil pump controller, and the oil pump controller can return an instruction reception signal for the oil pump control instruction to the transmission controller within 100 milliseconds after being woken up. Therefore, if the transmission controller does not receive the instruction reception signal, it can indicate that there may be a fault in the connection between the oil pump controller and the transmission controller, or that the oil pump controller has a fault.

[0045] Among them, the oil pump control instruction can carry various signals including a flag bit for driving the oil pump assembly to stop running, a driving assembly flow command, transmission oil temperature, transmission oil temperature validity, a message verification fault code of the transmission controller, main oil circuit pressure, and main oil circuit pressure validity. For ease of understanding, the following uses Table 1 as an example to illustrate the relevant information of these signals.

[0046] Table 1

[0047]

[0048]

[0049]

[0050] S102: Obtain the oil pump operation data, the transmission operation data sent by the transmission controller, and the high-voltage system operation data sent by the high-voltage system controller.

[0051] As mentioned above, the oil pump controller can return an instruction reception signal for the oil pump control instruction to the transmission controller within 100 milliseconds after being woken up. Based on this, the above-mentioned oil pump operation data can include this instruction reception signal, where the instruction reception signal can include an oil pump controller fault code, oil pump flow, oil pump motor voltage, oil pump motor controller board temperature, oil pump motor bus current, oil pump motor speed, and a message verification fault code of the oil pump controller. For ease of understanding, the following uses Table 2 as an example to illustrate the relevant information of these data included in the instruction reception signal.

[0052] Table 2

[0053]

[0054]

[0055] In addition, the transmission operation data may include the pressure and flow rate of the main oil circuit. The high-pressure system operation data may include the relay status data and power supply status data of the high-pressure system. For the sake of easy understanding, Table 3 is taken as an example below to illustrate the relevant information of these data included in the high-pressure system operation data.

[0056] Table 3

[0057]

[0058] S103: When it is determined based on the oil pump operation data that the electric oil pump is in a fault-free state, based on the transmission operation data that the transmission is in a flow request state, and based on the high-pressure system operation data that the high-pressure system is in a high-voltage power-on state, execute the oil pump control instruction.

[0059] In the embodiment of the present application, before executing the oil pump control instruction, the oil pump controller first deeply analyzes the operation data of the electric oil pump, the transmission, and the high-pressure system, determines the working states of the electric oil pump, the transmission, and the high-pressure system, and then executes the oil pump control instruction when the working states of the three meet the preset states, so as to implement an active and intelligent oil pump control strategy and improve the operation efficiency of the electric oil pump. For the sake of easy understanding, the determination process of the working states of the above three can be exemplarily described below.

[0060] As an example, for the electric oil pump, the process of determining that the electric oil pump is in a fault-free state may include: if, in response to the oil pump control instruction, an instruction reception signal is returned to the transmission controller within a preset duration, it is determined that the electric oil pump is in a fault-free state. The above fault-free state may be that the electric oil pump itself has no fault, or that the connection between the oil pump controller and the transmission controller has no fault. As mentioned above, the oil pump controller may return an instruction reception signal for the oil pump control instruction to the transmission controller within 100 milliseconds after being awakened. Therefore, the above preset duration may be 100 milliseconds, that is, when the oil pump controller does not return an instruction reception signal to the transmission controller within 100 milliseconds after receiving the oil pump control instruction, it can be determined that the electric oil pump has a fault, or there is a connection fault between the oil pump controller and the transmission controller. In this way, through the interaction information between the oil pump controller and the transmission controller, it can be quickly and accurately determined whether the electric oil pump is in a fault-free state.

[0061] As another example, for a high-voltage system, the process of determining that the high-voltage system is in a high-voltage power-on state may include: If the relay status data indicates that the relay of the high-voltage system is in an energized state, and the power status data of the high-voltage system indicates that the high-voltage system is in a power-on state, then it is determined that the high-voltage system is in a high-voltage power-on state. In Table 3, the relay status data is represented by "EPTStCmdOn". When EPTStCmdOn is 0, it indicates that the relay is in an energized state; the power status data is represented by "EPTRdy". When EPTRdy is 1, it indicates that the high-voltage system is in a power-on state.

[0062] As yet another example, for a transmission, the process of determining that the transmission is in a flow request state may include: If the pressure in the main oil circuit is greater than a preset pressure, and the flow signal is a request flow activation signal, then it is determined that the transmission is in a flow request state. Here, by judging the pressure in the main oil circuit and the flow signal, the state of the transmission and its hydraulic system can be determined, so as to implement an active and intelligent oil pump control strategy and improve the operating efficiency of the electric oil pump.

[0063] Further, in the embodiments of the present application, the execution process of the oil pump control instruction may not be specifically limited. For the sake of understanding, a possible implementation manner will be described below.

[0064] In a possible implementation manner, executing the oil pump control instruction may include: Collecting the motor rotor position of the electric oil pump; Based on the motor speed position, driving the motor through a field-oriented control algorithm to execute the oil pump control instruction. Among them, the field-oriented control (FOC) algorithm makes the motion torque of the motor stable by precisely controlling the magnitude and direction of the magnetic field. For the sake of understanding, it will be described below with reference to the accompanying drawings. Figure 2 It is a schematic diagram of an FOC algorithm provided by the embodiments of the present application. Combining Figure 2 As shown, the implementation of the FOC algorithm requires configuring an angular displacement chip at the end of the motor rotor shaft to collect the motor rotor position and achieve closed-loop control of the motor speed. Among them, the FOC algorithm may include algorithm parts such as Clark transformation, Park transformation, Park inverse transformation, space vector pulse width modulation (SVPWM), angle loop, speed loop, and current loop. Specifically, the steps of using the FOC algorithm to execute the oil pump control instruction may include steps 1-step 8:

[0065] Step 1: Sampling the three-phase current of the motor to obtain IA, IB, and IC.

[0066] Step 2: Transforming IA, IB, and IC through Clark transformation to obtain Iα and Iβ.

[0067] Step 3: Perform Park transformation on Iα and Iβ to obtain Iq and Id.

[0068] Step 4: Calculate the errors between Iq and Id and their set values IQ-REF and ID-REF.

[0069] Step 5: Input the above errors into the Q-axis current loop PI regulator and the D-axis current loop PI regulator respectively to obtain the output control voltages VQ and VD.

[0070] Step 6: Perform inverse Park transformation on VQ and VD to obtain Vα and Vβ.

[0071] Step 7: Synthesize voltage space vectors with Vα and Vβ, input them into the SVPWM module for modulation, and output the state coding values of the three half-bridges at this moment.

[0072] Step 8: Control the MOSFET switches of the three-phase inverter according to the state coding values to drive the motor.

[0073] Furthermore, in the embodiment of the present application, new oil pump operation information can also be obtained during the execution of the oil pump control instruction, and the new oil pump operation information is sent to the transmission controller, so that the transmission controller can adjust the oil pump control instruction according to the new oil pump operation information. In this way, a more accurate and effective oil pump control instruction can be obtained, which helps to further improve the intelligence level of the control logic of the electronic oil pump.

[0074] For the sake of easy understanding, the following will describe the complete control process of the above-mentioned electronic oil pump with reference to the accompanying drawings. Figure 3 It is a schematic diagram of the control process of an electronic oil pump provided by an embodiment of the present application. Combining Figure 3 As shown, the electronic oil pump is in a fault-free state, the transmission is in a flow request state, and the high-voltage system is in a high-voltage power-on state, which can be used as the FOC enabling conditions for executing the oil pump control instruction. However, only when all three are in their corresponding states can FOC control be performed to execute the oil pump control instruction.

[0075] In addition, in the embodiments of the present application, when the vehicle is in the first driving mode, the electronic oil pump is controlled to adjust the pressure of the main oil circuit of the transmission; the first driving mode is used to indicate that the vehicle is driven by an electric motor; when the vehicle is in the second driving mode, the electronic oil pump is controlled to adjust the flow rate of the transmission; the second driving mode is used to indicate that the vehicle is driven by a hybrid of an electric motor and an engine. Here, when the vehicle is in the first driving mode, that is, the electric motor driving mode, the electronic oil pump needs to act as a power oil pump to provide a power source for the entire hydraulic system. Therefore, it is necessary to control the electronic oil pump to adjust the pressure of the main oil circuit; when the vehicle is in the second driving mode, that is, the hybrid driving mode, the electronic oil pump can act as an auxiliary oil pump. Therefore, it is necessary to control the electronic oil pump to supplement the flow rate of the entire hydraulic system. In this way, the electronic oil pump can play different functions in different modes, so the intelligent degree of the control logic of the electronic oil pump can be improved, and its operating efficiency can be improved as much as possible. It should be noted that in both modes, the electronic oil pump can provide cooling and lubrication functions for the entire transmission.

[0076] Based on the relevant content of the above steps S101 - S103, it can be known that in the embodiments of the present application, the control method of the electronic oil pump can be applied to the oil pump controller of the vehicle; the oil pump controller is respectively communicatively connected to the transmission controller and the high - voltage system controller of the vehicle. In this way, the oil pump controller can first obtain the oil pump control instruction sent by the transmission controller, and then obtain the oil pump operation data, the transmission operation data sent by the transmission controller, and the high - voltage system operation data sent by the high - voltage system controller. Thus, when it is determined based on the oil pump operation data that the electronic oil pump is in a fault - free state, based on the transmission operation data that the transmission is in a flow rate request state, and based on the high - voltage system operation data that the high - voltage system is in a high - voltage power - on state, the oil pump control instruction can be executed. In this way, before executing the oil pump control instruction, the oil pump controller can first deeply analyze the operation data of the electronic oil pump, the transmission, and the high - voltage system, and judge the working states of the electronic oil pump, the transmission, and the high - voltage system, so as to execute the oil pump control instruction when the working states of the three meet the preset states, thereby realizing an active and intelligent oil pump control strategy and improving the operating efficiency of the electronic oil pump.

[0077] Further, based on the control method of the electronic oil pump provided in the above embodiments, the embodiments of the present application can also provide a control device for the electronic oil pump. The control device for the electronic oil pump will be described below in combination with the embodiments and the drawings.

[0078] Figure 4 It is a schematic structural diagram of a control device for an electronic oil pump provided in the embodiments of the present application. Combined with Figure 4As shown in the figure, the control device 400 of the electric oil pump provided by the embodiment of the present application is applied to the oil pump controller of a vehicle; the oil pump controller is respectively communicatively connected to the transmission controller and the high-voltage system controller of the vehicle; the control device 400 includes:

[0079] A first acquisition module 401, configured to acquire an oil pump control instruction sent by the transmission controller;

[0080] A second acquisition module 402, configured to acquire oil pump operation data, transmission operation data sent by the transmission controller, and high-voltage system operation data sent by the high-voltage system controller;

[0081] An execution module 403, configured to execute the oil pump control instruction when it is determined based on the oil pump operation data that the electric oil pump is in a fault-free state, based on the transmission operation data that the transmission is in a flow request state, and based on the high-voltage system operation data that the high-voltage system is in a high-voltage power-on state.

[0082] As an implementation manner, the oil pump operation data includes an execution reception signal for the oil pump control instruction; the execution module 403 includes:

[0083] A first determination module, configured to determine that the electric oil pump is in a fault-free state if, in response to the oil pump control instruction, the instruction reception signal is returned to the transmission controller within a preset duration.

[0084] As an implementation manner, the high-voltage system operation data includes relay state data of the high-voltage system and power supply state data of the high-voltage system; the execution module 403 includes:

[0085] A second determination module, configured to determine that the high-voltage system is in a high-voltage power-on state if the relay state data indicates that the relay of the high-voltage system is in an energized state and the power supply state data of the high-voltage system indicates that the high-voltage system is in a power-on state.

[0086] As an implementation manner, the transmission operation data includes the pressure and flow signals of the main oil circuit; the execution module 403 includes:

[0087] A third determination module, configured to determine that the transmission is in a flow request state if the pressure is greater than a preset pressure and the flow signal is a requested flow activation signal.

[0088] As an implementation manner, the execution module 403 includes:

[0089] An acquisition module, configured to acquire the motor rotor position of the electric oil pump;

[0090] A driving module, configured to drive an electric motor based on the rotational speed and position of the motor and by means of a field-oriented control algorithm to execute the oil pump control instruction.

[0091] As an implementation, the control device 400 further includes:

[0092] A third acquisition module, configured to acquire new oil pump operation information during the execution of the oil pump control instruction;

[0093] A communication module, configured to send the new oil pump operation information to the transmission controller so that the transmission controller adjusts the oil pump control instruction according to the new oil pump operation information.

[0094] As an implementation, the control device 400 further includes:

[0095] A first control module, configured to control the electric oil pump to adjust the pressure of the main oil circuit of the transmission when the vehicle is in a first driving mode; the first driving mode is used to indicate that the vehicle is driven by an electric motor;

[0096] A second control module, configured to control the electric oil pump to adjust the flow rate of the transmission when the vehicle is in a second driving mode; the second driving mode is used to indicate that the vehicle is driven by a combination of an electric motor and an engine.

[0097] Furthermore, an embodiment of the present application further provides an electronic device, including: a processor, a memory, and a system bus;

[0098] The processor and the memory are connected through the system bus;

[0099] The memory is used to store one or more programs, and the one or more programs include instructions, and when the instructions are executed by the processor, the processor executes any implementation of the above-mentioned control method for the electric oil pump.

[0100] Furthermore, an embodiment of the present application further provides a computer-readable storage medium, in which instructions are stored, and when the instructions run on an electronic device, the terminal device executes any implementation of the above-mentioned control method for the electric oil pump.

[0101] As can be seen from the description of the above embodiments, those skilled in the art can clearly understand that all or part of the steps in the above-described embodiment methods can be implemented by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product, which can be stored in a storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network communication device such as a media gateway, etc.) to execute the methods described in each embodiment or some parts of the embodiments of the present application. It should be noted that the various embodiments in this specification are described in a progressive manner, and the key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0102] For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0103] It should also be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0104] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control method for an electronic oil pump, characterized in that, it is applied to an oil pump controller of a vehicle; the oil pump controller is respectively communicatively connected to a transmission controller and a high-voltage system controller of the vehicle; the control method includes: Obtaining an oil pump control instruction sent by the transmission controller; Obtaining oil pump operation data, transmission operation data sent by the transmission controller, and high-voltage system operation data sent by the high-voltage system controller; When it is determined based on the oil pump operation data that the electronic oil pump is in a fault-free state, based on the transmission operation data that the transmission is in a flow request state, and based on the high-voltage system operation data that the high-voltage system is in a high-voltage power-on state, execute the oil pump control instruction.

2. The control method according to claim 1, characterized in that, the oil pump operation data includes an execution reception signal for the oil pump control instruction; the determining that the electronic oil pump is in a fault-free state based on the oil pump operation data includes: If, in response to the oil pump control instruction, the instruction reception signal is returned to the transmission controller within a preset time period, it is determined that the electronic oil pump is in a fault-free state.

3. The control method according to claim 1, characterized in that, the high-voltage system operation data includes relay state data of the high-voltage system and power supply state data of the high-voltage system; the determining that the high-voltage system is in a high-voltage power-on state based on the high-voltage system operation data includes: If the relay state data indicates that the relay of the high-voltage system is in an energized state and the power supply state data of the high-voltage system indicates that the high-voltage system is in a power-on state, it is determined that the high-voltage system is in a high-voltage power-on state.

4. The control method according to claim 1, characterized in that, the transmission operation data includes the pressure and flow signals of the main oil circuit; the determining that the transmission is in a flow request state based on the transmission operation data includes: If the pressure is greater than a preset pressure and the flow signal is a request flow activation signal, it is determined that the transmission is in a flow request state.

5. The control method according to any one of claims 1 to 4, characterized in that, the executing the oil pump control instruction includes: Collecting the motor rotor position of the electronic oil pump; Based on the motor speed position and driving the motor through a field-oriented control algorithm to execute the oil pump control instruction.

6. The control method according to any one of claims 1 to 4, characterized in that, the method further includes: During the execution of the oil pump control instruction, obtaining new oil pump operation information; Sending the new oil pump operation information to the transmission controller so that the transmission controller adjusts the oil pump control instruction according to the new oil pump operation information.

7. The control method according to any one of claims 1 to 4, characterized in that, the method further includes: When the vehicle is in a first driving mode, controlling the electronic oil pump to adjust the pressure of the main oil circuit of the transmission; the first driving mode is used to indicate that the vehicle is driven by a motor; When the vehicle is in the second driving mode, control the electronic oil pump to adjust the flow rate of the transmission; the second driving mode is used to indicate that the vehicle is driven by a combination of a motor and an engine.

8. A control device for an electronic oil pump, characterized in that, it is applied to the oil pump controller of the vehicle; the oil pump controller is respectively communicatively connected to the transmission controller and the high-voltage system controller of the vehicle; the control device includes: a first acquisition module for acquiring an oil pump control instruction sent by the transmission controller; a second acquisition module for acquiring oil pump operation data, transmission operation data sent by the transmission controller, and high-voltage system operation data sent by the high-voltage system controller; an execution module for executing the oil pump control instruction when it is determined based on the oil pump operation data that the electronic oil pump is in a fault-free state, based on the transmission operation data that the transmission is in a flow rate request state, and based on the high-voltage system operation data that the high-voltage system is in a high-voltage power-on state.

9. An electronic device, characterized in that, the device includes: a processor, a memory, and a system bus; the processor and the memory are connected through the system bus; the memory is used to store one or more programs, the one or more programs include instructions, and the instructions, when executed by the processor, cause the processor to execute the control method of the electronic oil pump according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, the computer-readable storage medium stores instructions, and when the instructions are run on an electronic device, the electronic device is caused to execute the control method of the electronic oil pump according to any one of claims 1 to 7.

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