Oil pump control method, device and storage medium of vehicle

Abstract

The application discloses a vehicle oil pump control method and device and a storage medium, and belongs to the technical field of vehicle control. The method comprises the following steps: acquiring the working state of a mechanical oil pump of a vehicle; and controlling the rotating speed of an electric oil pump of the vehicle at the starting time according to the working state of the mechanical oil pump, so that the pressure generated under the rotating speed is sufficient to push away a one-way valve of the electric oil pump, and the mechanical oil pump and the electric oil pump belong to the same gearbox. In the multiple working states of the mechanical oil pump, the oil liquid with air in the electric oil pump can be normally discharged, the electric oil pump is prevented from being in an idling state, and the normal operation of the gearbox of the vehicle is maintained.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of vehicle control, in particular to a vehicle oil pump control method, device and storage medium. BACKGROUND

[0002] When a mechanical oil pump and an electric oil pump are simultaneously present in the gearbox of a hybrid vehicle, the two oil pumps share an oil suction filter, the mechanical oil pump sucks in oil containing air from the oil suction filter, and the electric oil pump sucks in air separated from the oil from the oil suction filter. Because more air is sucked in, the pressure value of the oil suction chamber of the electric oil pump is lower, which is not enough to push open the one-way valve of the electric oil pump, resulting in that the air in the oil suction chamber of the electric oil pump cannot be discharged, thereby causing the gearbox to fail to operate normally. SUMMARY

[0003] Embodiments of the present application provide a vehicle oil pump control method, device and storage medium, which can guarantee the normal operation of the gearbox of the vehicle. The technical solution is as follows:

[0004] On the one hand, the present application provides a vehicle oil pump control method, the method comprising:

[0005] obtaining the working state of the mechanical oil pump of the vehicle;

[0006] controlling the rotational speed of the electric oil pump of the vehicle at startup according to the working state of the mechanical oil pump, so that the pressure generated at the rotational speed is sufficient to push open the one-way valve of the electric oil pump, the mechanical oil pump and the electric oil pump belonging to the same gearbox.

[0007] On the other hand, a vehicle oil pump control device is provided, the device comprising:

[0008] a first obtaining module for obtaining the working state of the mechanical oil pump of the vehicle;

[0009] a control module for controlling the rotational speed of the electric oil pump of the vehicle at startup according to the working state of the mechanical oil pump, so that the pressure generated at the rotational speed is sufficient to push open the one-way valve of the electric oil pump, the mechanical oil pump and the electric oil pump belonging to the same gearbox.

[0010] On the other hand, a non-transitory computer readable storage medium is also provided, characterized in that the computer readable storage medium stores a computer program, the computer program is loaded and executed by a processor to implement the vehicle oil pump control method of any of the above.

[0011] On the other hand, a computer program product is also provided, the computer program product comprises computer instructions, the computer instructions are executed by a processor to implement the steps of the vehicle oil pump control method of any of the above.

[0012] The technical scheme provided by the application brings at least the following beneficial effects:

[0013] The application obtains the working state of the mechanical oil pump of the vehicle, and then controls the rotating speed of the electric oil pump at the starting time according to the working state of the mechanical oil pump, so that the pressure generated by the rotation of the electric oil pump is sufficient to push away the one-way valve of the electric oil pump. The technical scheme of the application can normally discharge the oil liquid with air in the electric oil pump under various working states of the mechanical oil pump, avoid the electric oil pump in the idling state, and maintain the normal operation of the gearbox of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Figure 1 is a schematic diagram of an implementation environment provided by the embodiment of the application;

[0016] Figure 2 is a flow chart of an oil pump control method of a vehicle provided by the embodiment of the application;

[0017] Figure 3 A schematic diagram of a gearbox structure is provided;

[0018] Figure 4 An oil pump control logic strategy diagram of a vehicle is provided;

[0019] Figure 5 is a schematic diagram of air flow and oil flow of a gearbox provided by the embodiment of the application;

[0020] Figure 6 is a structural schematic diagram of an oil pump control device of a vehicle provided by the embodiment of the application. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the application more clear, the embodiments of the application will be further described in detail with reference to the drawings.

[0022] The embodiment of the application provides an oil pump control method of a vehicle, please refer to Figure 1Fig. 1 shows a schematic diagram of an implementation environment of the method according to an embodiment of the present application. The implementation environment can include an ECU (Electronic Control Unit) 11, a Hall effect sensor 12, a mechanical oil pump 13, a first pressure sensor 14, a second pressure sensor 15, an electric oil pump 16, an electric oil pump controller 17, an electric oil pump motor 18, and a gearbox 19.

[0023] Optionally, the ECU 11 obtains the working state of the mechanical oil pump 13 through the Hall effect sensor 12. The working state of the mechanical oil pump 13 includes forward rotation of the mechanical oil pump 13, reverse rotation of the mechanical oil pump 13, and stop rotation of the mechanical oil pump 13.

[0024] For example, in response to the working state of the mechanical oil pump 13 being the reverse rotation of the mechanical oil pump 13 or the stop rotation of the mechanical oil pump 13, the ECU 11 sends a first instruction to start the electric oil pump 16 and control the electric oil pump 16 to rotate at a first rotating speed to the electric oil pump controller 17. After receiving the first instruction, the electric oil pump controller 17 starts the electric oil pump motor 18 to drive the electric oil pump 16 to rotate at the first rotating speed. The first rotating speed is determined by the required flow rate of the gearbox 19.

[0025] In a possible implementation, in response to the working state of the mechanical oil pump 13 being the forward rotation of the mechanical oil pump 13, the ECU 11 sends a second instruction to start the electric oil pump 16 and control the electric oil pump 16 to rotate at a second rotating speed to the electric oil pump controller 17. After receiving the second instruction, the electric oil pump controller 17 starts the electric oil pump motor 18 to drive the electric oil pump 16 to rotate at the second rotating speed. Optionally, the ECU 11 detects the pressure generated by the mechanical oil pump 13 in the working state of the forward rotation of the mechanical oil pump 13 through the first pressure sensor 14, and determines the second rotating speed based on the pressure.

[0026] In a possible implementation, during the rotation of the electric oil pump 16 at the second rotating speed, the ECU 11 continuously monitors the opening and closing state of the one-way valve of the electric oil pump 16 through the second pressure sensor 15. In response to the opening and closing state of the one-way valve of the electric oil pump 16 being the opening of the one-way valve of the electric oil pump 16, the ECU 11 keeps the electric oil pump 16 running at the second rotating speed for a first preset time length, and then sends a third instruction to switch the rotating speed of the electric oil pump 16 to the first rotating speed to the electric oil pump controller 17. After receiving the third instruction, the electric oil pump controller 17 controls the electric oil pump motor 18 to switch the electric oil pump 16 from the second rotating speed to the first rotating speed.

[0027] The ECU 11, the Hall effect sensor 12, the mechanical oil pump 13, the first pressure sensor 14, the second pressure sensor 15, the electric oil pump 16, the electric oil pump controller 17, the electric oil pump motor 18 and the gearbox 19 are communicatively connected through a wired or wireless network.

[0028] Based on the above Figure 1 As shown in the implementation environment, the embodiment of the present application provides a kind of oil pump control method of vehicle as Figure 2 As shown in the implementation environment, the embodiment of the present application provides a kind of oil pump control method of vehicle as

[0029] In step 201, the ECU obtains the working state of the mechanical oil pump of the vehicle.

[0030] In one possible implementation, the working state of the mechanical oil pump of the vehicle includes forward rotation of the mechanical oil pump, reverse rotation of the mechanical oil pump and stop rotation of the mechanical oil pump. Alternatively, the ECU obtains the working state of the mechanical oil pump of the vehicle, including: the ECU monitors the working state of the mechanical oil pump of the vehicle through the Hall effect sensor, and determines the working state of the mechanical oil pump according to the change of the current through the Hall effect sensor.

[0031] Alternatively, the change of the current through the Hall effect sensor when the mechanical oil pump is in forward rotation, reverse rotation and stop rotation can be determined according to experiments. For example, when the mechanical oil pump is in forward rotation and reverse rotation, the direction of the current through the Hall effect sensor is opposite, and when the mechanical oil pump is in stop rotation, the current intensity through the Hall effect sensor is almost 0.

[0032] In step 202, the ECU controls the rotational speed of the electric oil pump of the vehicle when it starts according to the working state of the mechanical oil pump, so that the pressure generated at the rotational speed is sufficient to push the one-way valve of the electric oil pump, and the mechanical oil pump and the electric oil pump belong to the same gearbox.

[0033] In one possible implementation, after the working state of the mechanical oil pump is obtained, the ECU controls the rotational speed of the electric oil pump of the vehicle when it starts according to the working state of the mechanical oil pump, so that the pressure generated at the rotational speed is sufficient to push the one-way valve of the electric oil pump, including: in response to the working state of the mechanical oil pump being reverse rotation or stop rotation of the mechanical oil pump, the ECU controls the electric oil pump of the vehicle to start and run at a first rotational speed. Wherein, the mechanical oil pump and the electric oil pump belong to the same gearbox.

[0034] Optionally, if it is determined that the working state of the mechanical oil pump is that the mechanical oil pump is reversely rotating or the mechanical oil pump is stopped, the ECU controls the electric oil pump of the vehicle to start and rotate at the first rotating speed, including: the ECU sends a first instruction to start the electric oil pump and control the electric oil pump to rotate at the first rotating speed to the electric oil pump controller of the vehicle, after the electric oil pump controller receives the first instruction, the electric oil pump motor is started, and the electric oil pump is driven to rotate at the first rotating speed by the electric oil pump motor.

[0035] In a possible implementation, the first rotating speed of the electric oil pump at the start is determined, including: the first rotating speed is determined based on the required flow of the gearbox. The required flow of the gearbox is the amount of fuel required by the current working state of the gearbox, which can be determined according to the working state of the gearbox.

[0036] Exemplarily, different working states of the gearbox correspond to different required flows, and the required flow corresponding to each working state of the gearbox can be determined in advance, so as to determine the required flow in the working state. Optionally, after the required flow of the gearbox is determined, the rotating speed of the electric oil pump is determined according to the correspondence between the required flow of the gearbox and the required rotating speed of the electric oil pump, and the correspondence between the required flow of the gearbox and the required rotating speed of the electric oil pump can be determined in advance through experiments.

[0037] In a possible implementation, the ECU controls the rotating speed of the electric oil pump at the start according to the working state of the mechanical oil pump, so that the pressure generated at the rotating speed is sufficient to push the one-way valve of the electric oil pump, and the method further includes: in response to the working state of the mechanical oil pump being that the mechanical oil pump is rotating in the forward direction, the electric oil pump is controlled to start and rotate at the second rotating speed, and the second rotating speed is greater than the first rotating speed.

[0038] Optionally, if it is determined that the working state of the mechanical oil pump is that the mechanical oil pump is rotating in the forward direction, the ECU controls the electric oil pump of the vehicle to start and rotate at the second rotating speed, including: the ECU sends a second instruction to start the electric oil pump and control the electric oil pump to rotate at the second rotating speed to the electric oil pump controller, after the electric oil pump controller receives the second instruction, the electric oil pump motor is started, and the electric oil pump is driven to rotate at the second rotating speed by the electric oil pump motor.

[0039] Exemplarily, the second rotating speed of the electric oil pump at the start is determined, including: the pressure generated by the mechanical oil pump in the working state of the mechanical oil pump rotating in the forward direction is obtained; and the second rotating speed is determined based on the pressure. Optionally, the pressure generated by the mechanical oil pump in the working state of the mechanical oil pump rotating in the forward direction can be detected by the first pressure sensor in the working state of the mechanical oil pump rotating in the forward direction.

[0040] In a possible implementation, after determining the pressure established by the mechanical oil pump in the working state of the mechanical oil pump rotating in the forward direction, the second rotating speed is determined based on the pressure, including: the rotating speed of the electric oil pump required for establishing various pressures is determined in advance through experiments, and then the second rotating speed of the electric oil pump required when starting is determined according to the pressure established by the current mechanical oil pump.

[0041] Optionally, after the electric oil pump is controlled to start and operate at the second rotating speed, the ECU monitors the opening and closing state of the one-way valve of the electric oil pump, including that the one-way valve of the electric oil pump is opened and the one-way valve of the electric oil pump is closed; in response to the opening and closing state of the one-way valve being that the one-way valve of the electric oil pump is opened, the electric oil pump is kept operating at the second rotating speed for a first preset time length, and then the rotating speed of the electric oil pump is switched to the first rotating speed.

[0042] In a possible implementation, during the process that the electric oil pump rotates at the second rotating speed, the ECU monitors the opening and closing state of the one-way valve of the electric oil pump, including that the ECU can continuously monitor the opening and closing state of the one-way valve of the electric oil pump through the second pressure sensor, wherein the opening and closing state of the one-way valve of the electric oil pump includes that the one-way valve of the electric oil pump is opened and the one-way valve of the electric oil pump is closed.

[0043] Optionally, the second pressure sensor can be installed on the oil outlet pipeline of the electric oil pump to monitor the oil pressure change of the oil outlet pipeline in real time, wherein the oil outlet pipeline is located in the oil outlet cavity of the electric oil pump. For example, the ECU continuously monitors the opening and closing state of the electric oil pump through the second pressure sensor, including: when the oil pressure of the oil outlet pipeline monitored by the second pressure sensor is obviously lower than the oil pressure monitored by the first pressure sensor, it indicates that the opening and closing state of the one-way valve of the electric oil pump is that the one-way valve of the electric oil pump is closed; when the oil pressure of the oil outlet pipeline monitored by the second pressure sensor is equal to the oil pressure monitored by the first pressure sensor, it indicates that the opening and closing state of the one-way valve of the electric oil pump is that the one-way valve of the electric oil pump is opened.

[0044] In a possible implementation, after determining the opening and closing state of the one-way valve of the electric oil pump, in response to the opening and closing state of the one-way valve being that the one-way valve of the electric oil pump is opened, the electric oil pump is kept operating at the second rotating speed for a first preset time length, and then the rotating speed of the electric oil pump is switched to the first rotating speed. Optionally, the first preset time length is the time length during which the electric oil pump rotates at the second rotating speed after the one-way valve of the electric oil pump is opened, which can be determined according to experiments. In a possible implementation, the first preset time length plus the time length during which the electric oil pump rotates at the second rotating speed before the one-way valve of the electric oil pump is opened is usually 3 seconds.

[0045] Exemplarily, after maintaining the electric oil pump to run at the second rotating speed for the first preset time length, the rotating speed of the electric oil pump is switched to the first rotating speed, including: the ECU sends a third instruction of switching the rotating speed of the electric oil pump to the first rotating speed to the electric oil pump controller, and after the electric oil pump controller receives the third instruction, the electric oil pump is switched from the second rotating speed to the first rotating speed by controlling the electric oil pump motor.

[0046] In a possible implementation, after determining the opening and closing state of the one-way valve of the electric oil pump, in response to the opening and closing state of the one-way valve still being that the one-way valve of the electric oil pump is closed after the second preset time length, the electric oil pump is prompted to be not opened. Optionally, the prompting manner includes but is not limited to: displaying the text information that the one-way valve of the electric oil pump is not opened on the large screen of the vehicle central control and playing the voice information that the one-way valve of the electric oil pump is not opened through the audio inside the vehicle. Exemplarily, the second preset time length can be set according to experience, and can also be adjusted according to actual conditions.

[0047] In combination with the above method process, the schematic diagram of the gearbox structure is shown in FIG. 1. Figure 3 The schematic diagram of the gearbox structure provided by the embodiment of the present application is exemplarily illustrated. The gearbox includes a one-way valve 301 of a mechanical oil pump, the mechanical oil pump 302, a one-way valve 303 of an electric oil pump, the electric oil pump 304, an oil suction filter 305, and a main oil circuit 306.

[0048] In a possible implementation, during the high-speed operation of the gearbox gear, more air bubbles enter the oil. The mechanical oil pump 302 sucks the oil containing air from the oil suction port of the oil suction filter 305 during operation; after being separated from the oil in the oil suction filter 305, part of the air enters the oil suction chamber of the electric oil pump 304 from the oil suction port of the electric oil pump 304.

[0049] Exemplarily, because there is too much air in the oil suction chamber of the electric oil pump 304, when the mechanical oil pump 302 is rotating forward, if the electric oil pump 304 is started and controlled to rotate at a low speed, the electric oil pump 304 sucks more air, resulting in that the pressure established by the electric oil pump 304 is lower than the pressure established by the mechanical oil pump, so the one-way valve 303 of the electric oil pump is in a closed state. The air circulates inside the oil suction chamber and the oil outlet chamber of the electric oil pump 304, the electric oil pump 304 is in an idling state, and the electric oil pump 304 works abnormally.

[0050] Optionally, to solve the above problems and ensure the normal operation of the electric oil pump and the gearbox, when the mechanical oil pump 302 rotates forward, the electric oil pump 304 is controlled to start and rotate at a high speed, wherein the high speed can be calculated according to the pressure established by the mechanical oil pump 302 in the working state of the mechanical oil pump 302 rotating forward. During the process of the electric oil pump 304 rotating at the second speed, the opening and closing state of the one-way valve 303 of the electric oil pump is monitored. In response to the opening and closing state of the one-way valve 303 of the electric oil pump being open, the electric oil pump 304 is kept rotating at the second speed for a first preset time length, and then the speed of the electric oil pump 304 is switched to the first speed. The oil finally converges in the main oil circuit 306 through the one-way valve 301 of the mechanical oil pump and the one-way valve 303 of the electric oil pump.

[0051] In a possible implementation, the first speed can be determined according to the demand flow of the gearbox. The first preset time length, during which the electric oil pump 304 rotates at the second speed after the one-way valve 303 of the electric oil pump is open, can be determined according to experiments, for example, the first preset time length plus the time length during which the electric oil pump 304 rotates at the second speed before the one-way valve 303 of the electric oil pump is open is usually 3 seconds.

[0052] In combination with the above method process, the structure of the oil pump control device of the vehicle provided by the embodiment shown in Figure 4 The structure of the oil pump control device of the vehicle provided by the embodiment of the application is taken as an example for illustration. The execution subject can be an ECU. Optionally, in step 401, the working state of the mechanical oil pump of the vehicle is acquired. In step 402, it is determined whether the working state of the mechanical oil pump is that the mechanical oil pump rotates forward.

[0053] In a possible implementation, if the working state of the mechanical oil pump is that the mechanical oil pump rotates forward, step 403 is entered; if the working state of the mechanical oil pump is not that the mechanical oil pump rotates forward, step 404 is entered. In step 403, the electric oil pump is controlled to start and rotate at a second speed. In step 404, the speed of the electric oil pump is adjusted according to the demand flow of the gearbox.

[0054] In combination with the above method process, the structure of the oil pump control device of the vehicle provided by the embodiment shown in Figure 5 The schematic diagram of the air flow and oil flow of the gearbox provided by the embodiment of the application is taken as an example for illustration. Optionally, the double solid lines indicate the flow direction of the air in the electric oil pump, that is, from the oil suction port 501 of the oil filter, through the oil suction port 502 of the electric oil pump, into the oil suction chamber 503 of the electric oil pump; the single solid line indicates the flow direction of the oil in the mechanical oil pump, that is, from the oil suction port 501 of the oil filter, through the oil suction port 504 of the mechanical oil pump, into the oil suction chamber 505 of the mechanical oil pump; and the dashed line indicates the flow direction of the air in the mechanical oil pump, that is, from the oil suction port 501 of the oil filter, through the oil suction port 504 of the mechanical oil pump, into the oil suction chamber 505 of the mechanical oil pump.

[0055] The embodiment of the present application obtains the working state of the mechanical oil pump of the vehicle, and then controls the rotating speed of the electric oil pump at the starting time according to the working state of the mechanical oil pump, so that the pressure generated by the rotation of the electric oil pump is enough to push away the one-way valve of the electric oil pump. The technical scheme of the present application can normally discharge the oil liquid with air in the electric oil pump under various working states of the mechanical oil pump, avoid the idle state of the electric oil pump, and maintain the normal operation of the gearbox of the vehicle.

[0056] With reference to Figure 6 The embodiment of the present application provides a control device of an oil pump of a vehicle, which comprises:

[0057] The first obtaining module 601 is configured to obtain the working state of the mechanical oil pump of the vehicle.

[0058] The control module 602 is configured to control the rotating speed of the electric oil pump of the vehicle at the starting time according to the working state of the mechanical oil pump, so that the pressure generated by the rotating speed is enough to push away the one-way valve of the electric oil pump. The mechanical oil pump and the electric oil pump belong to the same gearbox.

[0059] In a possible implementation manner, the working state of the mechanical oil pump comprises forward rotation of the mechanical oil pump, reverse rotation of the mechanical oil pump and stop rotation of the mechanical oil pump. The control module 602 is configured to control the electric oil pump to start and rotate at a first rotating speed in response to that the working state of the mechanical oil pump is the reverse rotation of the mechanical oil pump or the stop rotation of the mechanical oil pump.

[0060] In a possible implementation manner, the control module 602 is configured to control the electric oil pump to start and rotate at a second rotating speed in response to that the working state of the mechanical oil pump is the forward rotation of the mechanical oil pump, and the second rotating speed is greater than the first rotating speed.

[0061] In a possible implementation manner, the control module 602 is further configured to monitor the opening and closing state of the one-way valve of the electric oil pump, and the opening and closing state of the one-way valve comprises opening of the one-way valve of the electric oil pump and closing of the one-way valve of the electric oil pump. The control module 602 is configured to keep the electric oil pump to rotate at the second rotating speed for a first preset time length, and then switch the rotating speed of the electric oil pump to the first rotating speed in response to that the opening and closing state of the one-way valve is the opening of the one-way valve of the electric oil pump.

[0062] In a possible implementation manner, the device further comprises a first determining module configured to determine the first rotating speed based on the required flow of the gearbox.

[0063] In a possible implementation manner, the device further comprises a second obtaining module configured to obtain the pressure size established by the mechanical oil pump under the working state of the forward rotation of the mechanical oil pump, and a second determining module configured to determine the second rotating speed based on the pressure size.

[0064] The device obtains the working state of the mechanical oil pump of the vehicle, and then controls the rotating speed of the electric oil pump at the starting time according to the working state of the mechanical oil pump, so that the pressure generated by the rotation of the electric oil pump is sufficient to push away the one-way valve of the electric oil pump. The technical scheme of the present application can normally discharge the oil liquid with air in the electric oil pump under various working states of the mechanical oil pump, avoid the electric oil pump in the idling state, and maintain the normal operation of the gearbox of the vehicle.

[0065] It should be noted that the device provided by the above embodiment is only exemplified by the above division of functional modules when realizing its function, and in actual application, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the above described functions. In addition, the device and method embodiments provided by the above embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiments, which will not be described here.

[0066] In an example embodiment, a non-transitory computer-readable storage medium is also provided, and the computer-readable storage medium stores at least one computer program, which is loaded and executed by a processor of a computer device to enable the computer to implement any one of the above vehicle oil pump control methods.

[0067] In a possible implementation manner, the computer-readable storage medium can be a read-only memory (ROM), a random access memory (RAM), a compact disc read-only memory (CD-ROM), a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0068] In an example embodiment, a computer program product or computer program is also provided, and the computer program product or computer program includes computer instructions stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to enable the computer device to execute any one of the above vehicle oil pump control methods.

[0069] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data for analysis, stored data, displayed data, etc.) and signals involved in the present application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of related data need to comply with relevant laws, regulations and standards of relevant countries and regions. For example, the working state of the mechanical oil pump, the rotating speed of the electric oil pump and the pressure established by the mechanical oil pump in the present application are all obtained under sufficient authorization.

[0070] It should be understood that the "multiple" mentioned herein refers to two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after are in an "or" relationship.

[0071] It should be noted that the terms "first", "second", etc. (if any) in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0072] The above is only an exemplary embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method of controlling an oil pump of a vehicle, characterized by, The method comprises: acquiring a working state of a mechanical oil pump of a vehicle; controlling a rotational speed of an electric oil pump of the vehicle at a start-up of the electric oil pump according to the working state of the mechanical oil pump, so that a pressure generated at the rotational speed is sufficient to push open a one-way valve of the electric oil pump, the mechanical oil pump and the electric oil pump belonging to a same gearbox; the working state of the mechanical oil pump comprises forward rotation of the mechanical oil pump, reverse rotation of the mechanical oil pump and stop of the mechanical oil pump, and the controlling of the rotational speed of the electric oil pump at the start-up of the electric oil pump according to the working state of the mechanical oil pump comprises: in response to the working state of the mechanical oil pump being the reverse rotation of the mechanical oil pump or the stop of the mechanical oil pump, controlling the electric oil pump to start up and operate at a first rotational speed; in response to the working state of the mechanical oil pump being the forward rotation of the mechanical oil pump, controlling the electric oil pump to start up and operate at a second rotational speed, the second rotational speed being greater than the first rotational speed.

2. The method of claim 1, wherein, after the controlling of the electric oil pump to start up and operate at the second rotational speed, the method further comprises: monitoring an opening and closing state of the one-way valve of the electric oil pump, the opening and closing state of the one-way valve comprising opening of the one-way valve of the electric oil pump and closing of the one-way valve of the electric oil pump; in response to the opening and closing state of the one-way valve being the opening of the one-way valve of the electric oil pump, maintaining the electric oil pump to operate at the second rotational speed for a first preset time length, and then switching the rotational speed of the electric oil pump to the first rotational speed.

3. The method according to any one of claims 1-2, characterized in that, The method further comprises: determining the first rotational speed based on a required flow of the gearbox of the vehicle.

4. The method according to claim 1 or 2, characterized in that, The method further comprises: acquiring a pressure size established by the mechanical oil pump in the working state of the forward rotation of the mechanical oil pump; determining the second rotational speed based on the pressure size.

5. An oil pump control device of a vehicle characterized by comprising: The device comprises: a first acquiring module configured to acquire a working state of a mechanical oil pump of a vehicle; a control module configured to control a rotational speed of an electric oil pump of the vehicle at a start-up of the electric oil pump according to the working state of the mechanical oil pump, so that a pressure generated at the rotational speed is sufficient to push open a one-way valve of the electric oil pump, the mechanical oil pump and the electric oil pump belonging to a same gearbox; the working state of the mechanical oil pump comprises forward rotation of the mechanical oil pump, reverse rotation of the mechanical oil pump and stop of the mechanical oil pump, and the control module is configured to, in response to the working state of the mechanical oil pump being the reverse rotation of the mechanical oil pump or the stop of the mechanical oil pump, control the electric oil pump to start up and operate at a first rotational speed, and in response to the working state of the mechanical oil pump being the forward rotation of the mechanical oil pump, control the electric oil pump to start up and operate at a second rotational speed, the second rotational speed being greater than the first rotational speed.

6. A computer program product, comprising computer instructions, which, when executed by a processor, implement the steps of the oil pump control method of the vehicle according to any one of claims 1 to 4.

7. A non-transitory computer-readable storage medium, comprising: A computer program is stored in the computer readable storage medium, and the computer program is loaded and executed by the processor to implement the oil pump control method of the vehicle according to any one of claims 1 to 4.

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