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

Abstract

The invention provides a control method and device for an electric oil pump, electronic equipment and a storage medium, and the method comprises the steps that the engine state of the electric oil pump is obtained; an electromagnetic valve is controlled to be switched on and off according to the engine state, and the output flow of the engine is obtained; the electric oil pump is controlled to change the rotating speed according to the control signal, so that the output flow is increased, and the first engine direct drive working condition is obtained; obtaining a second engine direct drive working condition according to the increased output flow; and state analysis is conducted on the first engine direct-drive working condition and the second engine direct-drive working condition, and the engine direct-drive state is controlled to be finished. By implementing the application, the utilization rate of the clutch and the working efficiency of the electric oil pump can be improved, the cost and the use loss of the electric oil pump are reduced, the running state of the electric oil pump can be improved, and the stability and the reliability of the electric oil pump are improved.

Description

Technical Field

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

[0002] The hybrid transmission is an important functional component inside the transmission, which controls the flow of lubricating oil as an electric oil pump. Its main function is to control the clutch engagement and deliver transmission oil to various parts for cooling and lubrication. The hybrid transmission assembly usually uses two oil pumps for clutch control and cooling lubrication respectively. The cooling lubricating oil pump needs to run all the time after the hybrid transmission is working to ensure that the lubricating oil flows inside the transmission, cools and lubricates the motor and gears, etc. The clutch engagement oil pump only works when the engine is directly driven to ensure the clutch engagement. Using two oil pumps to work has higher control accuracy.

[0003] However, in the prior art, since the clutch-engaged oil pump only works in the direct drive state and does not work under other working conditions, the cost of the hybrid transmission is greatly increased, making the loss of the hybrid transmission higher. In addition, the clutch is only engaged in the direct drive state, and long-term use is easily affected by the engine, which delays the working state of the clutch, thereby reducing the working efficiency of the electric oil pump. Summary of the invention

[0004] The purpose of the present application is to provide a control method, device, electronic device and storage medium for an electric oil pump, which can improve the utilization rate of the clutch and the working efficiency of the electric oil pump, while reducing the cost and usage loss of the electric oil pump, and can improve the operating state of the electric oil pump and improve the stability and reliability of the electric oil pump.

[0005] In a first aspect, an embodiment of the present application provides a method for controlling an electric oil pump, the method comprising:

[0006] Acquiring an engine state of the electric oil pump;

[0007] Controlling the solenoid valve to open and close according to the engine state to obtain the output flow of the engine;

[0008] Controlling the electric oil pump to change its speed according to the control signal so as to increase the output flow rate and obtain a first engine direct drive working condition;

[0009] Obtaining a second engine direct drive operating condition according to the increased output flow;

[0010] Performing state analysis on the first engine direct drive operating condition and the second engine direct drive operating condition, and controlling the engine direct drive state to end.

[0011] In the above implementation process, the speed changes of the solenoid valve and the electric oil pump are controlled according to the engine status of the electric oil pump, so that the clutch can also work in the direct drive state, which can improve the utilization rate of the clutch and the working efficiency of the electric oil pump, while reducing the cost and usage loss of the electric oil pump, and can improve the operating state of the electric oil pump and improve the stability and reliability of the electric oil pump.

[0012] Furthermore, the step of controlling the electromagnetic valve to open and close according to the engine state to obtain the output flow of the engine includes:

[0013] Determining whether the engine state is a direct drive state;

[0014] If yes, a transmission signal is obtained, and the clutch engagement solenoid valve is controlled to open according to the transmission signal, and the opening of the cooling lubrication oil circuit solenoid valve is controlled to decrease, so as to obtain the output flow;

[0015] If not, the clutch engagement solenoid valve is controlled to be closed, and the cooling lubrication oil circuit solenoid valve is controlled to be opened.

[0016] In the above implementation process, when the engine state is in the direct drive state, the clutch solenoid valve and the cooling lubrication oil circuit solenoid valve are controlled to open and close according to the sending signal, so that the motor and clutch can work normally and improve work efficiency.

[0017] Furthermore, the step of controlling the electric oil pump to change the speed according to the control signal so as to increase the output flow rate and obtain the first engine direct drive working condition includes:

[0018] acquiring the control signal;

[0019] Controlling the electric oil pump to increase its speed according to the control signal so as to increase the output flow rate and obtain an increased output flow rate;

[0020] The first engine direct drive operating condition corresponding to the increased output flow is obtained.

[0021] In the above implementation process, the speed of the electric oil pump is increased according to the control signal, so that the output flow rate increases. The output flow rate can be quickly adjusted to provide support for the changes of the electric oil pump and maintain the stable output of the electric oil pump.

[0022] Furthermore, the step of obtaining the second engine direct drive operating condition according to the increased output flow rate includes:

[0023] A threshold output flow rate in the increased output flow rate is controlled to flow to the clutch so that the clutch is engaged to obtain the second engine direct drive operating condition.

[0024] In the above implementation process, most of the increased output flow is input into the clutch, and the clutch is controlled to engage, so that the engine direct drive condition can be maintained, the engine can be operated stably, and the operation reliability is improved.

[0025] Furthermore, the step of performing state analysis on the first engine direct drive operating condition and the second engine direct drive operating condition and controlling the engine direct drive state to end includes:

[0026] determining whether the second engine direct-drive operating condition meets a preset standard of the first engine direct-drive operating condition;

[0027] If yes, obtaining an end signal, and controlling the engine direct drive state to end according to the end signal;

[0028] If not, continue to control the electric oil pump speed to increase according to the control signal, so that the engine direct drive working condition obtained according to the increased output flow can reach the preset standard of the first engine direct drive working condition.

[0029] In the above implementation process, when the engine direct drive condition reaches the end standard, the engine direct drive state is controlled to end according to the end signal, so that the engine can realize state control according to demand and reduce the loss generated during use.

[0030] Further, the step of controlling the engine direct drive state to end according to the end signal comprises:

[0031] The clutch engagement solenoid valve is controlled to be closed according to the end signal, and the opening of the cooling lubrication oil circuit solenoid valve is controlled to be increased, so that the engine direct drive state ends.

[0032] In the above implementation process, the clutch combination solenoid valve and the cooling and lubricating oil circuit solenoid valve are opened and closed according to the end signal, thereby improving the coordination performance between the solenoid valve and the electric oil pump and improving the flexibility of flow output.

[0033] Furthermore, after the step of controlling the engine direct drive state to end according to the end signal, the method further includes:

[0034] According to the current direct-drive working condition of the engine, the speed of the electric oil pump is controlled to decrease so as to reduce the output flow.

[0035] In the above implementation process, the speed of the electric oil pump is controlled to be reduced according to the current engine direct drive working condition, thereby reducing the flow output, thereby increasing the service life of the electric oil pump and improving the flexibility of the electric oil pump in controlling the flow.

[0036] In a second aspect, an embodiment of the present application further provides a control device for an electric oil pump, the device comprising:

[0037] An acquisition module, used for acquiring the engine status of the electric oil pump;

[0038] a control module, for controlling the electromagnetic valve to be opened and closed according to the engine state to obtain the output flow of the engine; for controlling the electric oil pump to change the speed according to the control signal to increase the output flow to obtain a first engine direct drive working condition; and for performing state analysis on the first engine direct drive working condition and the second engine direct drive working condition to control the engine direct drive state to end;

[0039] The data acquisition module is used to obtain the second engine direct drive working condition according to the increased output flow.

[0040] In the above implementation process, the speed changes of the solenoid valve and the electric oil pump are controlled according to the engine status of the electric oil pump, so that the clutch can also work in the direct drive state, which can improve the utilization rate of the clutch and the working efficiency of the electric oil pump, while reducing the cost and usage loss of the electric oil pump, and can improve the operating state of the electric oil pump and improve the stability and reliability of the electric oil pump.

[0041] In a third aspect, an embodiment of the present application provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method described in any one of the first aspects when executing the computer program.

[0042] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which instructions are stored. When the instructions are executed on a computer, the computer executes the method as described in any one of the first aspects.

[0043] In a fifth aspect, an embodiment of the present application provides a computer program product, which, when running on a computer, enables the computer to execute the method as described in any one of the first aspects.

[0044] Other features and advantages of the present disclosure will be set forth in the following description, or some features and advantages may be inferred or unambiguously determined from the description, or may be learned by implementing the above-mentioned technology of the present disclosure.

[0045] And it can be implemented according to the contents of the specification. The following is a detailed description of the preferred embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the range values. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying any creative work.

[0047] Figure 1 A schematic flow chart of a control method for an electric oil pump provided in an embodiment of the present application;

[0048] Figure 2 A schematic diagram of the structure of the control device of the electric oil pump provided in an embodiment of the present application;

[0049] Figure 3 A schematic diagram of the structural composition of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0051] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0052] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0053] Embodiment 1

[0054] Figure 1 is a flow chart of a control method for an electric oil pump provided in an embodiment of the present application, such as Figure 1 As shown, the method includes:

[0055] S1, obtaining the engine status of the electric oil pump;

[0056] S2, controls the solenoid valve to open and close according to the engine status to obtain the output flow of the engine;

[0057] S3, controlling the electric oil pump to change the speed according to the control signal to increase the output flow rate, thereby obtaining a first engine direct drive working condition;

[0058] S4, obtaining a second engine direct drive operating condition according to the increased output flow;

[0059] S5, performing state analysis on the first engine direct drive operating condition and the second engine direct drive operating condition, and controlling the engine direct drive state to end.

[0060] In the above implementation process, the speed changes of the solenoid valve and the electric oil pump are controlled according to the engine status of the electric oil pump, so that the clutch can also work in the direct drive state, which can improve the utilization rate of the clutch and the working efficiency of the electric oil pump, while reducing the cost and usage loss of the electric oil pump, and can improve the operating state of the electric oil pump and improve the stability and reliability of the electric oil pump.

[0061] The embodiment of the present application achieves effective control of the electric oil pump by adding solenoid valves in the two oil outlet pipelines of the electric oil pump and reasonably controlling the opening and closing of the solenoid valves. The electric oil pump can be cooled so that the electric oil pump is quickly and continuously within the optimal operating temperature range, and the engagement control of the clutch can be achieved.

[0062] The electric oil pump of the present application is used to deliver lubricating oil to the interior of the transmission.

[0063] The cooling and lubricating oil circuit solenoid valve is used to control the opening of the cooling and lubricating oil port so that the oil can be cooled and lubricated. The clutch engagement solenoid valve is used to control the opening of the clutch engagement oil port so that the oil can control the clutch engagement.

[0064] In S1, the engine status of the electric oil pump is divided into two types, one is a direct drive state and the other is a non-direct drive state.

[0065] Furthermore, S2 includes:

[0066] Determine whether the engine state is a direct drive state;

[0067] If yes, a transmission signal is obtained, and the clutch engagement solenoid valve is controlled to open according to the transmission signal, and the opening of the cooling and lubricating oil circuit solenoid valve is controlled to decrease, so as to obtain an output flow rate;

[0068] If not, control the clutch engagement solenoid valve to close, and control the cooling lubrication oil circuit solenoid valve to open.

[0069] In the above implementation process, when the engine state is in the direct drive state, the clutch solenoid valve and the cooling lubrication oil circuit solenoid valve are controlled to open and close according to the sending signal, so that the motor and clutch can work normally and improve work efficiency.

[0070] When the engine is in a non-direct drive state, the clutch is controlled to engage the solenoid valve to close, the cooling lubrication oil circuit solenoid valve is opened, and all the lubricating oil is cooled to lubricate the motor and gears.

[0071] When the engine is in direct drive state, the transmission control unit sends a start signal to the two oil pump solenoid valves. The clutch engagement solenoid valve opens after receiving the sent signal, and the cooling and lubrication oil circuit solenoid valve reduces its opening after receiving the sent signal.

[0072] Furthermore, S3 includes:

[0073] Get control signal;

[0074] According to the control signal, the electric oil pump speed is controlled to increase so as to increase the output flow rate, thereby obtaining the increased output flow rate;

[0075] A first engine direct drive operating condition corresponding to the increased output flow is obtained.

[0076] In the above implementation process, the speed of the electric oil pump is increased according to the control signal, so that the output flow rate increases. The output flow rate can be quickly adjusted to provide support for the changes of the electric oil pump and maintain the stable output of the electric oil pump.

[0077] After receiving the control signal, the electric oil pump increases the speed, thereby increasing the output flow.

[0078] Furthermore, S4 includes:

[0079] A threshold output flow rate in the increased output flow rate is controlled to flow to the clutch, so that the clutch is engaged to obtain a second engine direct drive operating condition.

[0080] In the above implementation process, most of the increased output flow is input into the clutch, and the clutch is controlled to engage, so that the engine direct drive condition can be maintained, the engine can be operated stably, and the operation reliability is improved.

[0081] Most of the increased output flow (the threshold output flow can be set as needed) is used for clutch engagement to ensure that the engine direct drive operating condition is maintained at the first engine direct drive operating condition.

[0082] Furthermore, S5 includes:

[0083] determining whether the second engine direct drive operating condition meets a preset standard of the first engine direct drive operating condition;

[0084] If yes, an end signal is obtained, and the engine direct drive state is controlled to end according to the end signal;

[0085] If not, continue to control the electric oil pump speed to increase according to the control signal, so that the engine direct drive working condition obtained according to the increased output flow can reach the preset standard of the first engine direct drive working condition.

[0086] In the above implementation process, when the engine direct drive condition reaches the end standard, the engine direct drive state is controlled to end according to the end signal, so that the engine can realize state control according to demand and reduce the loss generated during use.

[0087] The embodiment of the present application requires real-time monitoring of the engine direct drive condition. When the engine direct drive state is engaged, a signal needs to be quickly sent to the electric oil pump and the two solenoid valves for feedback to ensure the effectiveness of the clutch engagement.

[0088] Further, the step of controlling the engine direct drive state to end according to the end signal includes:

[0089] According to the end signal, the clutch engagement solenoid valve is controlled to close, and the opening of the cooling lubrication oil circuit solenoid valve is controlled to increase, so that the engine direct drive state ends.

[0090] In the above implementation process, the clutch combination solenoid valve and the cooling and lubricating oil circuit solenoid valve are opened and closed according to the end signal, thereby improving the coordination performance between the solenoid valve and the electric oil pump and improving the flexibility of flow output.

[0091] The transmission control unit sends an end signal to the two solenoid valves, the clutch engagement solenoid valve closes, and the opening of the cooling and lubrication oil circuit solenoid valve increases.

[0092] Further, after the step of controlling the engine direct drive state to end according to the end signal, the method further includes:

[0093] According to the current direct-drive working condition of the engine, the speed of the electric oil pump is controlled to decrease so as to reduce the output flow.

[0094] In the above implementation process, the speed of the electric oil pump is controlled to be reduced according to the current engine direct drive working condition, thereby reducing the flow output, thereby increasing the service life of the electric oil pump and improving the flexibility of the electric oil pump in controlling the flow.

[0095] The electric oil pump appropriately reduces the speed and output flow according to the current direct-drive working condition of the engine, thereby reducing waste of fuel consumption and costs.

[0096] The control method of the electric oil pump of the present application plays a vital role in the entire hybrid transmission system, and can ensure the flow of transmission oil between the internal oil channels and components, so that the transmission oil can cool and lubricate key components such as shaft gears and motors, reduce shaft gear wear, reduce the temperature of the motor, and allow each component to work normally, thereby ensuring the stability of the transmission. The engagement and disengagement of the clutch is also achieved by the hydraulic oil output by the oil pump to ensure the engagement of the engine.

[0097] Embodiment 2

[0098] In order to execute the method corresponding to the above embodiment 1 to achieve the corresponding functions and technical effects, a control device for an electric oil pump is provided below, such as Figure 2 As shown, the device comprises:

[0099] An acquisition module 1 is used to acquire the engine status of the electric oil pump;

[0100] The control module 2 is used to control the electromagnetic valve to open and close according to the engine state to obtain the output flow of the engine; it is also used to control the electric oil pump to change the speed according to the control signal to increase the output flow to obtain the first engine direct drive working condition; it is also used to perform state analysis on the first engine direct drive working condition and the second engine direct drive working condition to control the engine direct drive state to end;

[0101] The data acquisition module 3 is used to obtain the second engine direct drive working condition according to the increased output flow.

[0102] In the above implementation process, the speed changes of the solenoid valve and the electric oil pump are controlled according to the engine status of the electric oil pump, so that the clutch can also work in the direct drive state, which can improve the utilization rate of the clutch and the working efficiency of the electric oil pump, while reducing the cost and usage loss of the electric oil pump, and can improve the operating state of the electric oil pump and improve the stability and reliability of the electric oil pump.

[0103] Furthermore, the control module 2 is also used for:

[0104] Determine whether the engine state is a direct drive state;

[0105] If yes, a transmission signal is obtained, and the clutch engagement solenoid valve is controlled to open according to the transmission signal, and the opening of the cooling and lubricating oil circuit solenoid valve is controlled to decrease, so as to obtain an output flow rate;

[0106] If not, control the clutch engagement solenoid valve to close, and control the cooling lubrication oil circuit solenoid valve to open.

[0107] In the above implementation process, when the engine state is in the direct drive state, the clutch solenoid valve and the cooling lubrication oil circuit solenoid valve are controlled to open and close according to the sending signal, so that the motor and clutch can work normally and improve work efficiency.

[0108] Furthermore, the control module 2 is also used for:

[0109] Get control signal;

[0110] According to the control signal, the electric oil pump speed is controlled to increase so as to increase the output flow rate, thereby obtaining the increased output flow rate;

[0111] A first engine direct drive operating condition corresponding to the increased output flow is obtained.

[0112] In the above implementation process, the speed of the electric oil pump is increased according to the control signal, so that the output flow rate increases. The output flow rate can be quickly adjusted to provide support for the changes of the electric oil pump and maintain the stable output of the electric oil pump.

[0113] Furthermore, the data acquisition module 3 is also used for:

[0114] A threshold output flow rate in the increased output flow rate is controlled to flow to the clutch, so that the clutch is engaged to obtain a second engine direct drive operating condition.

[0115] In the above implementation process, most of the increased output flow is input into the clutch, and the clutch is controlled to engage, so that the engine direct drive condition can be maintained, the engine can be operated stably, and the operation reliability is improved.

[0116] Furthermore, the control module 2 is also used for:

[0117] determining whether the second engine direct drive operating condition meets a preset standard of the first engine direct drive operating condition;

[0118] If yes, an end signal is obtained, and the engine direct drive state is controlled to end according to the end signal;

[0119] If not, continue to control the electric oil pump speed to increase according to the control signal, so that the engine direct drive working condition obtained according to the increased output flow can reach the preset standard of the first engine direct drive working condition.

[0120] In the above implementation process, when the engine direct drive condition reaches the end standard, the engine direct drive state is controlled to end according to the end signal, so that the engine can realize state control according to demand and reduce the loss generated during use.

[0121] Furthermore, the control module 2 is also used for:

[0122] According to the end signal, the clutch engagement solenoid valve is controlled to close, and the opening of the cooling lubrication oil circuit solenoid valve is controlled to increase, so that the engine direct drive state ends.

[0123] In the above implementation process, the clutch combination solenoid valve and the cooling and lubricating oil circuit solenoid valve are opened and closed according to the end signal, thereby improving the coordination performance between the solenoid valve and the electric oil pump and improving the flexibility of flow output.

[0124] Furthermore, the control module 2 is also used for:

[0125] According to the current direct-drive working condition of the engine, the speed of the electric oil pump is controlled to decrease so as to reduce the output flow.

[0126] In the above implementation process, the speed of the electric oil pump is controlled to be reduced according to the current engine direct drive working condition, thereby reducing the flow output, thereby increasing the service life of the electric oil pump and improving the flexibility of the electric oil pump in controlling the flow.

[0127] The control device of the electric oil pump can implement the method of the above-mentioned embodiment 1. The options in the above-mentioned embodiment 1 are also applicable to this embodiment and will not be described in detail here.

[0128] The rest of the contents of the embodiments of the present application can refer to the contents of the above-mentioned embodiment 1, and will not be repeated in this embodiment.

[0129] Embodiment 3

[0130] An embodiment of the present application provides an electronic device, including a memory and a processor, wherein the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute the control method of the electric oil pump of the first embodiment.

[0131] Optionally, the above-mentioned electronic device may be a server.

[0132] See also Figure 3 , Figure 3 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device may include a processor 31, a communication interface 32, a memory 33 and at least one communication bus 34. The communication bus 34 is used to realize direct connection and communication between these components. The communication interface 32 of the device in the embodiment of the present application is used to communicate signaling or data with other node devices. The processor 31 may be an integrated circuit chip with signal processing capabilities.

[0133] The processor 31 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or the processor 31 can also be any conventional processor, etc.

[0134] The memory 33 may be, but is not limited to, a random access memory (RAM), a read only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable read-only memory (EEPROM), etc. The memory 33 stores computer-readable instructions. When the computer-readable instructions are executed by the processor 31, the device can execute the above-mentioned Figure 1 The method embodiment involves various steps.

[0135] Optionally, the electronic device may further include a storage controller and an input / output unit. The memory 33, the storage controller, the processor 31, the peripheral interface, and the input / output unit are electrically connected to each other directly or indirectly to achieve data transmission or interaction. For example, these components may be electrically connected to each other via a communication bus 34. The processor 31 is used to execute executable modules stored in the memory 33, such as software function modules or computer programs included in the device.

[0136] The input and output unit is used to provide users with the task creation and to create a start optional time period or preset execution time for the task to realize the interaction between the user and the server. The input and output unit can be, but is not limited to, a mouse and a keyboard.

[0137] Understandably, Figure 3 The structure shown is for illustration only. The electronic device may also include Figure 3 More or fewer components as shown, or with Figure 3 Different configurations shown. Figure 3 Each component shown in the figure can be implemented by hardware, software or a combination thereof.

[0138] In addition, an embodiment of the present application further provides a computer-readable storage medium storing a computer program, which implements the control method of the electric oil pump of the first embodiment when the computer program is executed by a processor.

[0139] The embodiment of the present application also provides a computer program product, which, when running on a computer, enables the computer to execute the method described in the method embodiment.

[0140] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or the flowchart, and the combination of boxes in the block diagram and / or the flowchart, can be implemented with a dedicated hardware-based device that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0141] In addition, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0142] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks.

[0143] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0144] The above is only a specific implementation of the present application, but the protection range of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical range disclosed in the present application, which should be included in the protection range of the present application. Therefore, the protection range of the present application should be based on the protection range of the claims.

[0145] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A control method for an electric oil pump, characterized in that: The method comprises: Acquiring an engine state of the electric oil pump; Controlling the solenoid valve to open and close according to the engine state to obtain the output flow of the engine; Controlling the electric oil pump to change its speed according to the control signal so as to increase the output flow rate and obtain a first engine direct drive working condition; Obtaining a second engine direct drive operating condition according to the increased output flow; Performing state analysis on the first engine direct drive operating condition and the second engine direct drive operating condition, and controlling the engine direct drive state to end.

2. The control method of the electric oil pump according to claim 1, characterized in that: The step of controlling the electromagnetic valve to open and close according to the engine state to obtain the output flow of the engine comprises: Determining whether the engine state is a direct drive state; If yes, a transmission signal is obtained, and the clutch engagement solenoid valve is controlled to open according to the transmission signal, and the opening of the cooling lubrication oil circuit solenoid valve is controlled to decrease, so as to obtain the output flow; If not, the clutch engagement solenoid valve is controlled to be closed, and the cooling lubrication oil circuit solenoid valve is controlled to be opened.

3. The control method of the electric oil pump according to claim 1, characterized in that: The step of controlling the electric oil pump to change the speed according to the control signal so as to increase the output flow rate and obtain the first engine direct drive working condition comprises: acquiring the control signal; Controlling the electric oil pump to increase its speed according to the control signal so as to increase the output flow rate and obtain an increased output flow rate; The first engine direct drive operating condition corresponding to the increased output flow is obtained.

4. The control method of the electric oil pump according to claim 1, characterized in that: The step of obtaining a second engine direct drive operating condition according to the increased output flow rate comprises: A threshold output flow rate in the increased output flow rate is controlled to flow to the clutch so that the clutch is engaged to obtain the second engine direct drive operating condition.

5. The control method of the electric oil pump according to claim 1, characterized in that: The step of performing state analysis on the first engine direct drive operating condition and the second engine direct drive operating condition and controlling the engine direct drive state to end includes: determining whether the second engine direct-drive operating condition meets a preset standard of the first engine direct-drive operating condition; If yes, obtaining an end signal, and controlling the engine direct drive state to end according to the end signal; If not, continue to control the electric oil pump speed to increase according to the control signal, so that the engine direct drive working condition obtained according to the increased output flow can reach the preset standard of the first engine direct drive working condition.

6. The control method of the electric oil pump according to claim 5, characterized in that: The step of controlling the engine direct drive state to end according to the end signal comprises: The clutch engagement solenoid valve is controlled to be closed according to the end signal, and the opening of the cooling lubrication oil circuit solenoid valve is controlled to be increased, so that the engine direct drive state ends.

7. The control method of the electric oil pump according to claim 6, characterized in that: After the step of controlling the engine direct drive state to end according to the end signal, the method further includes: According to the current direct-drive working condition of the engine, the speed of the electric oil pump is controlled to decrease so as to reduce the output flow.

8. A control device for an electric oil pump, characterized in that: The device comprises: An acquisition module, used for acquiring the engine status of the electric oil pump; a control module, for controlling the electromagnetic valve to be opened and closed according to the engine state to obtain the output flow of the engine; for controlling the electric oil pump to change the speed according to the control signal to increase the output flow to obtain a first engine direct drive working condition; and for performing state analysis on the first engine direct drive working condition and the second engine direct drive working condition to control the engine direct drive state to end; The data acquisition module is used to obtain the second engine direct drive working condition according to the increased output flow.

9. An electronic device, characterized in that: The electronic device comprises a memory and a processor, wherein the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute the control method of the electric oil pump according to any one of claims 1 to 7.

10. A storage medium, characterized in that: A computer program is stored therein, and when the computer program is executed by a processor, the control method of the electric oil pump according to any one of claims 1 to 7 is implemented.

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