Oil pump control method, controller, system and vehicle

Abstract

The invention discloses an oil pump control method, a controller, a system and a vehicle, the oil pump control method is applied to a functional domain controller, and comprises the following steps: acquiring an oil pump control request, a fuel level state signal and a vehicle state signal sent by a central domain controller; and if the oil pump control request, the fuel level state signal and the vehicle state signal meet the preset power distribution condition, an oil pump is driven to work, and an oil pump state signal of the oil pump is fed back to the central domain controller. According to the technical scheme, the reliable, stable and power-consumption-controllable oil pump power distribution control function is achieved in a domain control framework, use of relays and wiring harnesses related to oil pump power distribution control is saved, the vehicle manufacturing cost is reduced, meanwhile, power distribution control is flexible and safe, full power distribution circuit faults can be monitored by feeding back oil pump state signals of the oil pumps, and the reliability of the system is improved. Faults can be detected and repaired, and electric energy consumption can be monitored.

Description

Technical Field

[0001] The present invention relates to the technical field of oil pump control, and particularly to an oil pump control method, a controller, a system and a vehicle. Background Art

[0002] Most of the fuel and hybrid vehicles sold on the market currently are equipped with a low-pressure oil pump, which is a device for supplying oil to a high-pressure oil pump in the engine fuel system. Among them, the power distribution control of the low-pressure oil pump is a power distribution scheme under the traditional architecture, and the non-normal power supply is mainly carried out by means of a contact relay plus a fuse. This power supply method is irreversible in case of overcurrent burnout during application. Generally, the design is to protect through a fast-blowing fuse, but the effect is often not good. Often, the relay burns out before the fuse device acts and fuses, and some overcurrents are only transient. If the relay burns out, it is necessary to tow the vehicle to a repair shop for treatment, which causes great trouble to the vehicle user. Summary of the Invention

[0003] Embodiments of the present invention provide an oil pump control method, a controller, a system and a vehicle to solve the problem of poor reliability of the existing low-pressure oil pump control method.

[0004] An oil pump control method, applied to a function domain controller, includes: Obtaining an oil pump control request, a fuel level status signal and a vehicle status signal sent by a central domain controller; If the oil pump control request, the fuel level status signal and the vehicle status signal meet a preset power distribution condition, driving the oil pump to work, and feeding back an oil pump status signal of the oil pump to the central domain controller.

[0005] Further, meeting the preset power distribution condition includes that the oil pump control request is a power distribution request, the fuel level status signal is that the fuel level is less than a preset level threshold, and the vehicle status signal is a non-collision state.

[0006] An oil pump control method, applied to an engine controller, includes: Obtaining an engine status signal, an oil pump status signal and a vehicle status signal sent by a central domain controller; Sending an oil pump control request to the central domain controller according to the engine status signal, the oil pump status signal and the vehicle status signal, so as to forward the oil pump control request to a function domain controller through the central domain controller.

[0007] Further, the sending an oil pump control request to the central domain controller according to the engine status signal, the oil pump status signal and the vehicle status signal includes: If the engine status signal is in the starting state, the fuel pump status signal indicates no fault in the fuel pump, and the vehicle status signal is in a non-collision state, then the fuel pump control request is a power distribution request, and the power distribution request is sent to the central domain controller; If the engine status is in the non-starting state, or the fuel pump status signal indicates a fuel pump fault, or the vehicle status signal is in a collision state, then the fuel pump control request is a power-off request, and the power-off request is sent to the central domain controller.

[0008] Further, the power distribution request is used to instruct the fuel pump drive module in the function domain controller to power on the fuel pump; The power-off request is used to instruct the fuel pump drive module in the function domain controller to power off the fuel pump.

[0009] Further, the engine status signal being in the starting state includes that the vehicle ignition signal meets the preset ignition condition, or the engine starts; the engine status being in the non-starting state includes that the vehicle ignition signal does not meet the preset ignition condition, or the engine does not start.

[0010] A function domain controller includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the above-mentioned fuel pump control method is implemented.

[0011] An engine controller includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the above-mentioned fuel pump control method is implemented.

[0012] A fuel pump control system includes a fuel pump, a central domain controller, the above-mentioned function domain controller, and the above-mentioned engine controller; The central domain controller is used to obtain the fuel level status signal and the vehicle status signal; The engine controller is connected to the central domain controller and is used to connect to the engine, obtain the engine status signal, and the fuel pump status signal and the vehicle status signal sent by the central domain controller; according to the engine status signal, the fuel pump status signal, and the vehicle status signal, send a fuel pump control request to the central domain controller to forward the fuel pump control request to the function domain controller through the central domain controller; The functional domain controller is connected to the central domain controller and is used to connect to an oil pump, obtain the oil pump control request, the fuel level status signal, and the vehicle status signal sent by the central domain controller; if the oil pump control request, the fuel level status signal, and the vehicle status signal meet the preset power distribution conditions, it drives the oil pump to work and feeds back the oil pump status signal of the oil pump to the central domain controller.

[0013] Further, the functional domain controller includes an oil pump driving module; The oil pump driving module is used to connect to the oil pump and drive the oil pump to work when the oil pump control request, the fuel level status signal, and the vehicle status signal meet the preset power distribution conditions.

[0014] Further, the oil pump driving module includes an IGBT switching device, and the IGBT switching device is used to power on or off the oil pump.

[0015] A vehicle includes the above-mentioned oil pump control system.

[0016] An embodiment of the present invention provides an oil pump control method, a controller, a system, and a vehicle. The functional domain controller obtains the oil pump control request, the fuel level status signal, and the vehicle status signal sent by the central domain controller. If the oil pump control request, the fuel level status signal, and the vehicle status signal meet the preset power distribution conditions, it drives the oil pump to work and feeds back the oil pump status signal of the oil pump to the central domain controller, thereby realizing a reliable, stable, and power consumption controllable oil pump power distribution control function in the domain control architecture, saving the use of relays and wiring harnesses related to oil pump power distribution control, reducing the vehicle manufacturing cost, and at the same time, the power distribution control is flexible and safe. The full power distribution circuit fault can be monitored by feeding back the oil pump status signal of the oil pump, and the faults can be detected, repaired, and the power consumption can be monitored.

[0017] The engine controller obtains the engine status signal, as well as the oil pump status signal and the vehicle status signal sent by the central domain controller, and sends an oil pump control request to the central domain controller according to the engine status signal, the oil pump status signal, and the vehicle status signal, so as to forward the oil pump control request to the functional domain controller through the central domain controller, thereby realizing intelligent power distribution control through the engine controller in the domain control architecture, reducing the oil pump relay, lowering the vehicle cost, and improving the functional safety. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 is a flowchart of an oil pump control method in an embodiment of the present invention; Figure 2 is another flowchart of an oil pump control method in an embodiment of the present invention; Figure 3 is another flowchart of an oil pump control method in an embodiment of the present invention; Figure 4 is a schematic diagram of an oil pump control system in an embodiment of the present invention. Detailed Embodiments

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0021] It should be understood that the present invention can be implemented in different forms and should not be construed as limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of the present invention to those skilled in the art. In the drawings, for clarity, the dimensions and relative dimensions of layers and regions may be exaggerated. The same reference numerals denote the same elements throughout the drawings.

[0022] It should be understood that when an element or layer is referred to as "on", "adjacent to", "connected to", or "coupled to" another element or layer, it can be directly on, adjacent to, connected to, or coupled to the other element or layer, or there may be intervening elements or layers. In contrast, when an element is referred to as "directly on", "directly adjacent to", "directly connected to", or "directly coupled to" another element or layer, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers, and / or parts, these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer, or part from another element, component, region, layer, or part. Therefore, without departing from the teachings of the present invention, the first element, component, region, layer, or part discussed below may be referred to as the second element, component, region, layer, or part.

[0023] Spatial relationship terms such as "under", "below", "lower", "beneath", "above", "upper", etc. may be used herein for convenience of description to describe the relationship of one element or feature shown in the figures with other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relationship terms are also intended to include different orientations of the device in use and operation. For example, if the device in the figures is flipped, then an element or feature described as "below other elements" or "beneath them" or "under them" will be oriented "above" the other elements or features. Thus, the exemplary terms "under" and "beneath" can include both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or other orientations) and the spatial descriptors used herein are to be interpreted accordingly.

[0024] The purpose of the terms used herein is only to describe specific embodiments and is not a limitation of the present invention. As used herein, the singular forms "a", "an" and "the" are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising" and / or "including", when used in this specification, specify the presence of the stated features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups. As used herein, the term "and / or" includes any and all combinations of the associated listed items.

[0025] To thoroughly understand the present invention, detailed structures and steps will be set forth in the following description in order to illustrate the technical solutions proposed by the present invention. The preferred embodiments of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention may have other embodiments.

[0026] This embodiment provides a method for controlling an oil pump 40, which is applied to an oil pump 40 control system as shown in Figure 4 the figure. Exemplarily, the oil pump 40 control system includes an oil pump 40, an engine controller 10, a central domain controller 20, and a functional domain controller 30. The central domain controller 20 is respectively connected to the engine controller 10 and the functional domain controller 30. The engine controller 10 is used to connect to the engine. The functional domain controller 30 is connected to the oil pump 40. In this embodiment, the oil pump 40 is preferably a low-pressure oil pump in a vehicle.

[0027] Optionally, the functional domain controller 30 may be a luggage compartment domain controller. It can be understood that the specific functional domain controller 30 can be selected according to actual experience or requirements.

[0028] This embodiment provides a method for controlling an oil pump 40, such as Figure 1As shown, it is applied to the functional domain controller 30 and includes: S101: Obtain the oil pump control request, fuel level status signal, and vehicle status signal sent by the central domain controller 20.

[0029] S102: If the oil pump control request, fuel level status signal, and vehicle status signal meet the preset power distribution conditions, drive the oil pump 40 to work and feedback the oil pump status signal of the oil pump 40 to the central domain controller 20.

[0030] Among them, the oil pump control request is a request for controlling the operation of the oil pump 40. Exemplarily, the oil pump control request includes a power distribution request and a power-off request. The fuel level status signal is a signal of the remaining fuel quantity in the fuel tank. Usually, it is a digital or analog signal generated after being measured by a fuel level sensor and processed. The vehicle status signal is a vehicle driving status signal. Exemplarily, the vehicle status signal includes a normal driving status and a driving fault status. It can be understood that the driving fault status includes a collision status. The preset power distribution condition is a condition set by oneself, that is, the condition for powering the oil pump 40.

[0031] As an example, in step S101, obtain the oil pump control request, fuel level status signal, and vehicle status signal sent by the central domain controller 20. Exemplarily, the central domain controller 20 is also connected to the body domain controller, the body domain controller is connected to the fuel level sensor, and the fuel level sensor is arranged inside the fuel tank. Thus, the central domain controller 20 obtains the fuel level status signal through the fuel level sensor and the body domain controller. Exemplarily, the central domain controller 20 is also connected to an airbag control unit (Airbag Control Unit, ACU) or a collision sensor module for obtaining the vehicle status signal through the airbag control unit or the collision sensor module. Exemplarily, the oil pump control request can be a request generated by the engine controller 10 and forwarded to the functional domain controller 30 through the central domain sensor. It can also be directly generated by the central domain controller 20 according to the collected engine status signal, combined with the fuel level status signal, the oil pump status signal, and the vehicle status signal.

[0032] As an example, in step S102, if the fuel pump control request, the fuel level status signal, and the vehicle status signal meet the preset power distribution conditions, the fuel pump 40 is driven to operate, and the fuel pump status signal of the fuel pump 40 is fed back to the central domain controller 20. Among them, the fuel pump status signal is the operating status signal of the fuel pump 40. Exemplarily, the fuel pump status signal includes the power distribution status of the fuel pump 40, the power distribution voltage of the fuel pump 40, and the circuit fault information of the fuel pump 40. In this example, when the function domain controller 30 detects that the fuel pump control request, the fuel level status signal, and the vehicle status signal sent by the central domain controller 20 meet the preset power distribution conditions, the fuel pump 40 is driven to operate, and the fuel pump status signal of the fuel pump 40 is fed back to the central domain controller 20, so as to comprehensively judge the starting conditions of the fuel pump 40 in multiple dimensions by combining the fuel pump control request, the fuel level status signal, and the vehicle status signal, ensuring the reliability during the starting process of the fuel pump 40.

[0033] As another example, meeting the preset power distribution conditions includes that the fuel pump control request is a power distribution request, the fuel level status signal is that the fuel level is less than the preset level threshold, and the vehicle status signal is a non-collision state. The preset level threshold is a custom-set threshold, which can be set according to actual experience and is not limited here. When the function domain controller 30 receives a power distribution request, the fuel level is low, and the vehicle has not collided, the fuel pump 40 can be started for pre-pumping. It can be understood that when any one of the fuel pump control request being a power distribution request, the fuel level status signal being that the fuel level is less than the preset level threshold, and the vehicle status signal being a non-collision state does not hold, that is, the fuel pump control request is a power-down request, or the fuel level is not less than the preset level threshold, or the vehicle status signal is a collision state, the function domain controller 30 controls the fuel pump 40 to power down, that is, the fuel pump 40 does not operate.

[0034] In this embodiment, the function domain controller 30 obtains the fuel pump control request, the fuel level status signal, and the vehicle status signal sent by the central domain controller 20. If the fuel pump control request, the fuel level status signal, and the vehicle status signal meet the preset power distribution conditions, the fuel pump 40 is driven to operate, and the fuel pump status signal of the fuel pump 40 is fed back to the central domain controller 20, thereby realizing a reliable, stable, and power consumption controllable fuel pump 40 power distribution control function in the domain control architecture, saving the use of relays and wiring harnesses related to the fuel pump 40 power distribution control, reducing the vehicle manufacturing cost, and at the same time, the power distribution control is flexible and safe. The power distribution circuit fault can be monitored by feeding back the fuel pump status signal of the fuel pump 40, realizing fault detection, repair, and power consumption monitoring.

[0035] This embodiment provides a method for controlling a fuel pump 40, as Figure 2 shown, which is applied to the engine controller 10 and includes: S201: Obtain the engine status signal, as well as the fuel pump status signal and vehicle status signal sent by the central domain controller 20.

[0036] S202: Send a fuel pump control request to the central domain controller 20 according to the engine status signal, fuel pump status signal and vehicle status signal, so as to forward the fuel pump control request to the functional domain controller 30 through the central domain controller 20.

[0037] Among them, the engine status signal refers to the working status of the engine.

[0038] As an example, in step S201, the engine controller 10 is connected to the engine and engine sensors, collects the engine status signal according to the engine sensors, thereby obtains the engine status signal through the engine sensors, and obtains the fuel level status signal and vehicle status signal through the central domain controller 20, and the fuel pump status signal forwarded by the central domain controller 20 to the functional domain controller 30.

[0039] As an example, in step S202, according to the engine status signal, fuel pump status signal and vehicle status signal, send a fuel pump control request to the central domain controller 20, so as to forward the fuel pump control request to the functional domain controller 30 through the central domain controller 20. In this example, the engine controller 10 obtains the engine status signal to judge whether the vehicle engine is started, judges whether the power distribution circuit of the fuel pump 40 is faulty through the fuel pump status signal, and judges whether the vehicle has collided through the vehicle status signal, so as to comprehensively judge whether to control the power distribution or power-off of the fuel pump 40 in combination with multiple dimensions, generate a corresponding fuel pump control request and send it to the central domain controller 20, so as to forward the fuel pump control request to the functional domain controller 30 through the central domain controller 20.

[0040] In this embodiment, the engine controller 10 obtains the engine status signal, as well as the fuel pump status signal and vehicle status signal sent by the central domain controller 20, and sends a fuel pump control request to the central domain controller 20 according to the engine status signal, fuel pump status signal and vehicle status signal, so as to forward the fuel pump control request to the functional domain controller 30 through the central domain controller 20, thereby realizing intelligent power distribution control through the engine controller 10 under the domain control architecture, reducing the fuel pump 40 relay, reducing the vehicle cost, and improving the functional safety.

[0041] In one embodiment, as Figure 3 shown, in step S202, sending a fuel pump control request to the central domain controller 20 according to the engine status signal, fuel pump status signal and vehicle status signal includes: S301: If the engine status signal is in the start state, the fuel pump status signal indicates no fuel pump fault, and the vehicle status signal is in a non-collision state, then the fuel pump control request is a power distribution request, and the power distribution request is sent to the central domain controller 20.

[0042] S302: If the engine status is in the non-start state, or the fuel pump status signal indicates a fuel pump fault, or the vehicle status signal is in a collision state, then the fuel pump control request is a power-off request, and the power-off request is sent to the central domain controller 20.

[0043] As an example, in step S301, if the engine status signal is in the start state, the fuel pump status signal indicates no fuel pump fault, and the vehicle status signal is in a non-collision state, that is, the engine speed is not zero at this time, no fuel pump fault is detected, and the vehicle has not collided, thus it is determined that the condition for pre-pumping fuel is met, and the power distribution request is sent to the central domain controller 20.

[0044] As an example, in step S302, if the engine status is in the non-start state, or the fuel pump status signal indicates a fuel pump fault, or the vehicle status signal is in a collision state, that is, the engine speed is zero at this time, or a fuel pump fault is detected, or the vehicle has collided, thus when any of the above situations occurs, it is determined that the condition for pre-pumping fuel is not met, and the power-off request is sent to the central domain controller 20.

[0045] In this embodiment, if the engine status signal is in the start state, the fuel pump status signal indicates no fuel pump fault, and the vehicle status signal is in a non-collision state, then the fuel pump control request is a power distribution request, and the power distribution request is sent to the central domain controller 20. If the engine status is in the non-start state, or the fuel pump status signal indicates a fuel pump fault, or the vehicle status signal is in a collision state, then the fuel pump control request is a power-off request, and the power-off request is sent to the central domain controller 20, thereby ensuring the reliability and safety during the control process of the fuel pump 40.

[0046] This embodiment provides a functional domain controller 30, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the above-mentioned fuel pump 40 control method is implemented.

[0047] This embodiment provides an engine controller 10, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the above-mentioned fuel pump 40 control method is implemented.

[0048] This embodiment provides a fuel pump 40 control system, as Figure 4As shown in the figure, it includes an oil pump 40, a central domain controller 20, the above-mentioned functional domain controller 30, and the above-mentioned engine controller 10; the central domain controller 20 is used to obtain a fuel level status signal and a vehicle status signal; the engine controller 10 is connected to the central domain controller 20 and is used to connect to the engine, obtain an engine status signal, and the central domain controller 20 sends an oil pump status signal and a vehicle status signal; according to the engine status signal, the oil pump status signal, and the vehicle status signal, send an oil pump control request to the central domain controller 20, so as to forward the oil pump control request to the functional domain controller 30 through the central domain controller 20; the functional domain controller 30 is connected to the central domain controller 20 and is used to connect to the oil pump 40, obtain the oil pump control request, the fuel level status signal, and the vehicle status signal sent by the central domain controller 20; if the oil pump control request, the fuel level status signal, and the vehicle status signal meet the preset power distribution conditions, drive the oil pump 40 to work, and feedback the oil pump status signal of the oil pump 40 to the central domain controller 20.

[0049] In an embodiment, the engine status signal being in the start state includes that the vehicle ignition signal meets the preset ignition conditions, or the engine starts; the engine status being in the non-start state includes that the vehicle ignition signal does not meet the preset ignition conditions, or the engine does not start.

[0050] As an example, when the user starts the vehicle, the engine controller 10 detects the vehicle ignition signal. Optionally, the vehicle ignition signal is a KL15 signal. When the engine controller 10 detects that the vehicle ignition signal meets the preset ignition conditions, for example, the voltage of the KL15 signal is maintained above 3.1V, and the time when the voltage drops below 3.1V is maintained within 4ms to prevent misjudgment. Control the engine to rotate, detect the engine status signal. When the engine speed is not zero, the vehicle fuel is lacking, no oil pump failure is detected, and the vehicle has not collided, the engine controller 10 sends a power distribution signal to the central domain controller 20, and the central domain controller 20 forwards the power distribution signal, the fuel level status signal, and the vehicle status signal to the functional domain controller 30. The functional domain controller 30 makes a secondary judgment on the oil pump control request, the fuel level status signal, and the vehicle status signal, that is, the oil pump control request is a power distribution request, the fuel level status signal is that the fuel level is less than the preset level threshold, and the vehicle status signal is a non-collision state, then drive the oil pump 40 to work, and feedback the oil pump status signal of the oil pump 40 to the central domain controller 20, so as to realize a reliable, stable and power consumption controllable oil pump 40 power distribution control function in the domain control architecture, save the use of relevant relays and wiring harnesses for the oil pump 40 power distribution control, reduce the vehicle manufacturing cost, and at the same time the power distribution control is flexible and safe. The full power distribution circuit failure can be monitored by feedbacking the oil pump status signal of the oil pump 40, and the failure can be detected, repaired, and the power consumption can be monitored.

[0051] In one embodiment, the power distribution request is used to instruct the oil pump driving module in the function domain controller to power on the oil pump; the power-off request is used to instruct the oil pump driving module in the function domain controller to power off the oil pump.

[0052] In one embodiment, the function domain controller 30 includes an oil pump driving module 31; the oil pump driving module 31 is used to connect to the oil pump 40 and drive the oil pump 40 to work when the oil pump control request, the fuel level status signal, and the vehicle status signal meet the preset power distribution conditions. Exemplarily, the oil pump driving module 31 can be the HSD (High-Side Driver) module in the function domain controller 30.

[0053] In this embodiment, directly through the oil pump driving module 31 in the function domain controller 30, when the oil pump control request, the fuel level status signal, and the vehicle status signal meet the preset power distribution conditions, the oil pump 40 is driven to work, realizing reliable, stable, and power consumption controllable power distribution control of the oil pump 40, saving the use of related relays and wiring harnesses for the power distribution control of the oil pump 40, and reducing the vehicle manufacturing cost.

[0054] In one embodiment, the oil pump driving module 31 includes an IGBT switching device for powering on or off the oil pump. In this embodiment, the IGBT switching device and the oil pump 40 form a grounded loop. When the IGBT switching device is turned on, the oil pump 40 is controlled to work. When the IGBT switching device is turned off, the oil pump 40 is controlled to power off, so as to solve the problems of irreversible overcurrent burning, poor reliability, poor high and low temperature shock resistance, unstable suction, and easy failure of the relay in the traditional architecture of relay plus fuse power distribution mode.

[0055] This embodiment provides a vehicle including the above-mentioned oil pump 40 control system.

[0056] The above-described embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A method for controlling an oil pump, characterized in that: Applied to functional domain controllers, including: Obtain the fuel pump control request, fuel level status signal and vehicle status signal sent by the central domain controller; If the oil pump control request, the fuel level status signal and the vehicle status signal meet the preset power distribution conditions, the oil pump is driven to work, and the oil pump status signal of the oil pump is fed back to the central domain controller.

2. The oil pump control method according to claim 1, characterized in that: Meeting the preset power distribution condition includes that the oil pump control request is a power distribution request, and the fuel level status signal is that the fuel level is less than a preset level threshold, and the vehicle status signal is a non-collision state.

3. A method for controlling an oil pump, characterized in that: Applied in engine controllers, including: Obtain engine status signals, as well as oil pump status signals and vehicle status signals sent by the central domain controller; According to the engine status signal, the oil pump status signal and the vehicle status signal, an oil pump control request is sent to the central domain controller, so that the oil pump control request is forwarded to the functional domain controller through the central domain controller.

4. The oil pump control method according to claim 3, characterized in that: The sending of the oil pump control request to the central domain controller according to the engine status signal, the oil pump status signal and the vehicle status signal comprises: If the engine status signal is in the start state, the oil pump status signal is that the oil pump has no fault, and the vehicle status signal is in the non-collision state, the oil pump control request is a power distribution request, and the power distribution request is sent to the central domain controller; If the engine state is an unstarted state, or the oil pump state signal is an oil pump failure, or the vehicle state signal is a collision state, the oil pump control request is a power-off request, and the power-off request is sent to the central domain controller.

5. The oil pump control method according to claim 4, characterized in that: The power distribution request is used to instruct the oil pump driving module in the functional domain controller to power on the oil pump; The power-off request is used to instruct the oil pump driving module in the functional domain controller to perform a power-off operation on the oil pump.

6. The oil pump control method according to claim 4, characterized in that: The engine status signal is in the start state, which includes that the vehicle ignition signal meets the preset ignition condition, or the engine is started; the engine status is in the non-start state, which includes that the vehicle ignition signal does not meet the preset ignition condition, or the engine is not started.

7. A functional domain controller, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the oil pump control method according to any one of claims 1 to 2 is implemented.

8. An engine controller, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the oil pump control method according to any one of claims 3 to 6 is implemented.

9. An oil pump control system, characterized in that: comprising an oil pump, a central domain controller, the functional domain controller as claimed in claim 7 and the engine controller as claimed in claim 8; The central domain controller is used to obtain the fuel level status signal and the vehicle status signal; The engine controller is connected to the central domain controller, and is used to connect to the engine, obtain the engine status signal, and the oil pump status signal and the vehicle status signal sent by the central domain controller; send an oil pump control request to the central domain controller according to the engine status signal, the oil pump status signal and the vehicle status signal, so as to forward the oil pump control request to the functional domain controller through the central domain controller; The functional domain controller is connected to the central domain controller, and is used to connect to the oil pump and obtain the oil pump control request, the fuel level status signal and the vehicle status signal sent by the central domain controller; if the oil pump control request, the fuel level status signal and the vehicle status signal meet the preset power distribution conditions, the oil pump is driven to work, and the oil pump status signal of the oil pump is fed back to the central domain controller.

10. The oil pump control system according to claim 9, characterized in that: The functional domain controller includes an oil pump drive module; The oil pump driving module is used to connect the oil pump and drive the oil pump to work when the oil pump control request, the fuel level status signal and the vehicle status signal meet preset power distribution conditions.

11. The oil pump control system according to claim 10, characterized in that: The oil pump driving module includes an IGBT switch device, and the IGBT switch device is used to power on or off the oil pump.

12. A vehicle, characterized in that: It comprises the oil pump control system as claimed in any one of claims 9 to 11.

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