Control method and device of electronic oil pump system and electronic equipment

Abstract

The invention discloses a control method and device of an electronic oil pump system and electronic equipment. The control method comprises the steps that the driving mode of a target vehicle is determined; executing a pre-lubrication strategy in response to the fact that the driving mode of the target vehicle is pure electric driving; executing a formal lubrication strategy in response to the condition that the driving mode of the target vehicle is non-pure electric driving; wherein the rotating speed and the running time of the electronic oil pump in the pre-lubricating strategy are smaller than the rotating speed and the running time of the electronic oil pump in the formal lubricating strategy.

Description

Technical Field

[0001] This application belongs to the field of automotive engine control technology, specifically relating to a control method for an electronic oil pump system, a control device for an electronic oil pump system, and an electronic device. Background Technology

[0002] In hybrid vehicles, the electronic oil pump is a core component ensuring the lubrication of the powertrain. Currently, electronic oil pumps typically employ a uniform lubrication control scheme, maintaining a fixed speed and operating time regardless of whether the vehicle is in pure electric, fuel-powered, or hybrid driving modes. However, in actual operation, the powertrain speed is lower and the oil temperature rises slowly in pure electric mode. Maintaining high-speed lubrication in this situation not only results in unnecessary energy consumption but may also lead to excessive cooling of components due to excessively rapid oil circulation. In non-pure electric mode, the powertrain speed is higher, heat generation is faster, and the oil temperature rises more easily. In this situation, maintaining a fixed low speed makes it difficult to achieve efficient oil circulation and timely heat dissipation, easily leading to a decrease in lubrication efficiency and difficulty in adapting to the changing speed and temperature requirements of different driving modes. Therefore, there is an urgent need to propose a control scheme that can flexibly adjust the operating parameters of the electronic oil pump according to the vehicle's driving mode to improve the adaptability and rationality of existing lubrication control. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a control method for an electronic oil pump system, applicable to vehicles in hybrid driving mode. This method switches lubrication strategies according to the driving mode, reducing pure electric energy consumption, avoiding insufficient non-pure electric lubrication, adapting to the speed and temperature requirements of different modes, and enhancing lubrication performance.

[0004] To achieve the above objectives, a first aspect of the present invention provides a control method for an electronic oil pump system, comprising: determining the driving mode of a target vehicle; executing a pre-lubrication strategy in response to the target vehicle's driving mode being pure electric driving; and executing a formal lubrication strategy in response to the target vehicle's driving mode being non-pure electric driving; wherein the rotational speed and operating time of the electronic oil pump in the pre-lubrication strategy are less than the rotational speed and operating time of the electronic oil pump in the formal lubrication strategy.

[0005] In some embodiments, in response to the target vehicle being driven in pure electric mode, a pre-lubrication strategy is executed, including: determining whether the target vehicle speed is greater than a preset speed and whether the time elapsed since the last oil lubrication has reached a first preset time; and in response to the target vehicle speed being greater than the preset speed and the time elapsed since the last oil lubrication reaching the first preset time, controlling the electronic oil pump to run for a first control time according to a first target speed.

[0006] In some embodiments, the formal lubrication strategy includes a high-temperature lubrication strategy; in response to the target vehicle's driving mode being non-pure electric driving, the formal lubrication strategy is executed, including: determining whether the engine oil temperature is greater than a first preset temperature; in response to the oil temperature being greater than the first preset temperature, the high-temperature lubrication strategy is executed, including: determining whether the engine load is greater than a preset load threshold; in response to the engine load being greater than the preset load threshold, determining whether the engine speed is less than a first preset speed; in response to the engine speed being less than the first preset speed, controlling the speed of the electronic oil pump with a first target oil pressure; in response to the engine speed being not less than the first preset speed and less than a second preset speed, controlling the speed of the electronic oil pump with a second target oil pressure.

[0007] In some embodiments, the method further includes: determining whether the engine speed is less than a first preset speed in response to the engine load being less than a preset load threshold; controlling the speed of the electronic oil pump with a third target oil pressure in response to the engine speed being less than the first preset speed; and controlling the speed of the electronic oil pump with a first target oil pressure in response to the engine speed being not less than the first preset speed and less than the second preset speed.

[0008] In some embodiments, the formal lubrication strategy includes a normal temperature lubrication strategy; in response to the target vehicle's driving mode being non-pure electric driving, the formal lubrication strategy is executed, including: determining whether the engine oil temperature is greater than a second preset temperature and less than a first preset temperature; in response to the oil temperature being greater than the second preset temperature and less than the first preset temperature, the normal temperature lubrication strategy is executed, including: determining whether the engine speed is greater than a preset speed threshold; in response to the engine speed being greater than the preset speed threshold, controlling the electronic oil pump to continuously run at a second speed for a second running time; determining whether the engine load is greater than a preset load threshold; in response to the engine load being greater than the preset load threshold, determining whether the engine speed is less than a first preset speed; in response to the engine speed being less than the first preset speed, controlling the speed of the electronic oil pump with a fourth target oil pressure; in response to the engine speed being not less than the first preset speed and less than the second preset speed, controlling the speed of the electronic oil pump with a first target oil pressure.

[0009] In some embodiments, the method further includes: determining whether the engine speed is less than a first preset speed in response to an engine load less than a preset load threshold; controlling the speed of the electronic oil pump with a fifth target oil pressure in response to an engine speed less than the first preset speed; and controlling the speed of the electronic oil pump with a fourth target oil pressure in response to an engine speed not less than the first preset speed and less than a second preset speed.

[0010] In some embodiments, the formal lubrication strategy includes a low-temperature lubrication strategy; in response to the target vehicle's driving mode being non-pure electric driving, the formal lubrication strategy is executed, including: determining whether the engine oil temperature is lower than a second preset temperature; in response to the oil temperature being lower than the second preset temperature, the low-temperature lubrication strategy is executed, including: determining whether the engine speed is higher than a preset speed threshold; in response to the engine speed being higher than the preset speed threshold, controlling the electronic oil pump to continuously operate at a third speed for a third running time; determining whether the engine load is higher than a preset load threshold; in response to the engine load being higher than the preset load threshold, determining whether the engine speed is lower than a first preset speed; in response to the engine speed being lower than the first preset speed, controlling the speed of the electronic oil pump with a sixth target oil pressure; in response to the engine speed being not lower than the first preset speed and lower than the second preset speed, controlling the speed of the electronic oil pump with a seventh target oil pressure.

[0011] In some embodiments, the method further includes: determining whether the engine speed is less than a first preset speed in response to the engine load being less than a preset load threshold; controlling the speed of the electronic oil pump with a fourth target oil pressure in response to the engine speed being less than the first preset speed; and controlling the speed of the electronic oil pump with a sixth target oil pressure in response to the engine speed being not less than the first preset speed and less than the second preset speed.

[0012] According to the control method of the electronic oil pump system of the present invention, the driving mode of the target vehicle is first determined. Further, if the target vehicle's driving mode is pure electric, a pre-lubrication strategy is executed; if the target vehicle's driving mode is not pure electric, a formal lubrication strategy is executed. In the pre-lubrication strategy, the rotational speed and operating time of the electronic oil pump are less than those in the formal lubrication strategy. Therefore, this control method is applicable to vehicles in hybrid driving mode, switching lubrication strategies according to the driving mode to reduce pure electric energy consumption, avoid insufficient lubrication in non-pure electric driving modes, adapt to the speed and temperature requirements of different modes, and enhance lubrication effect.

[0013] To achieve the above objectives, a second aspect of the present invention provides a control device for an electronic oil pump system, comprising: a determining module configured to determine the driving mode of a target vehicle; a first response module configured to execute a pre-lubrication strategy in response to the target vehicle's driving mode being pure electric driving; and a second response module configured to execute a formal lubrication strategy in response to the target vehicle's driving mode being non-pure electric driving; wherein the rotational speed and operating time of the electronic oil pump in the formal lubrication strategy are less than the rotational speed and operating time of the electronic oil pump in the formal lubrication strategy.

[0014] A control device for an electronic oil pump system according to an embodiment of the present invention includes: a determining module configured to determine the driving mode of a target vehicle; a first response module configured to execute a pre-lubrication strategy in response to the target vehicle's driving mode being pure electric driving; and a second response module configured to execute a formal lubrication strategy in response to the target vehicle's driving mode being non-pure electric driving; wherein the rotational speed and operating time of the electronic oil pump in the formal lubrication strategy are less than those in the formal lubrication strategy. Therefore, this control device is applicable to vehicles in hybrid driving mode, switching lubrication strategies according to the driving mode, reducing pure electric energy consumption, avoiding insufficient lubrication in non-pure electric driving, adapting to the speed and temperature requirements of different modes, and enhancing lubrication effect.

[0015] To achieve the above objectives, a third aspect of the present invention provides an electronic device, including a processor and a memory. The memory stores a program or instructions executable on the processor, and the program or instructions, when executed by the processor, implement the steps of a control method for an electronic oil pump system. The electronic device according to the embodiments of the present invention, by executing the above-described control method for an electronic oil pump system, is applicable to vehicles in hybrid driving modes, switches lubrication strategies according to the driving mode, reduces pure electric energy consumption, avoids insufficient non-pure electric lubrication, adapts to the speed and temperature requirements of different modes, and enhances the lubrication effect.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a flowchart illustrating a control method for an electronic oil pump system according to an embodiment of this application. Figure 2 This is a schematic diagram illustrating the specific execution flow of the control method for the electronic oil pump system according to an embodiment of this application; Figure 3 This is a schematic diagram illustrating the internal working principle of the electronic oil pump system in the embodiments of this application; Figure 4 This is a schematic diagram of the control device for the electronic oil pump system in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application.

[0018] Reference numerals: Electronic oil pump system 300; Control device of electronic oil pump system 400; Determination module 401; First response module 402; Second response module 403; Processor 510; Memory 520; Input / output interface 530; Communication interface 540; Bus 550. Detailed Implementation

[0019] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0020] It should be understood that the steps described in the method embodiments of this application may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of this application is not limited in this respect.

[0021] As described in the background section, in multi-mode vehicles such as hybrid vehicles, the electronic oil pump is a core component ensuring the lubrication of the powertrain. When the target vehicle is in pure electric driving mode, it is commonly seen in scenarios such as short-distance urban commuting, low-speed congestion, and when the battery is fully charged. At this time, the powertrain is driven only by the electric motor, with low output power and speed. Moreover, the electric motor generates little heat and there is no fuel heat generation, so the oil temperature is maintained in a low range. When in non-pure electric driving mode (fuel or hybrid), it is mostly used in scenarios such as high speed, heavy load, and rapid acceleration. The powertrain requires high power output, the fuel engine runs at high speed and generates a lot of heat, and the oil temperature rises rapidly. However, the existing technology uses unified lubrication control. In pure electric mode, the electronic oil pump still runs at high speed, which consumes additional electrical energy, shortens the driving range, and causes excessive cooling of components and aggravates friction loss. In non-pure electric mode, the fixed low speed lubrication makes it difficult to dissipate heat, resulting in weakened lubrication performance. In addition, due to insufficient oil pressure, a stable oil film cannot be formed, which can easily lead to dry friction or even failure during rapid acceleration.

[0022] Related technologies do not take into account the differences in speed and temperature under different driving modes. Unified control cannot balance the low energy consumption of pure electric vehicles with the high efficiency of non-pure electric lubrication, which affects the user experience and component lifespan of vehicles and poses safety hazards. Therefore, the control method of the electronic oil pump system of the present invention improves the lubrication effect by identifying the vehicle driving mode and executing the corresponding lubrication strategy.

[0023] The following is for reference. Figures 1-2 This application describes a control method for an electronic oil pump system provided in an embodiment.

[0024] refer to Figure 1 This is a flowchart illustrating a control method for an electronic oil pump system according to an embodiment of this application.

[0025] like Figure 1 As shown, the control method of the electronic oil pump system in this embodiment of the invention may include the following steps: Step S101: Determine the driving mode of the target vehicle.

[0026] In step S102, in response to the target vehicle's driving mode being pure electric driving, a pre-lubrication strategy is executed.

[0027] Step S103: In response to the target vehicle's driving mode being non-pure electric driving, a formal lubrication strategy is executed; wherein, in the pre-lubrication strategy, the speed and running time of the electronic oil pump are less than those of the electronic oil pump in the formal lubrication strategy.

[0028] The control method of the electronic oil pump system in this application embodiment includes three steps: determining the driving mode, pure electric pre-lubrication, and non-pure electric precise control, ultimately achieving reliable vehicle lubrication and reasonable energy consumption.

[0029] First, regarding the determination of the target vehicle's driving mode in step S101, this driving mode mainly includes two categories: pure electric driving and non-pure electric driving. Non-pure electric driving can specifically cover fuel driving mode and hybrid driving mode. In actual operation, the driving mode of the vehicle can be accurately determined by collecting the working status parameters of the vehicle's power system (such as monitoring whether the motor is driven independently and whether the engine is started) or reading the driving mode identification signal output by the vehicle control system. This provides a basis for selecting the appropriate lubrication strategy and ensures that the subsequent lubrication operation can accurately match the vehicle's power requirements.

[0030] Furthermore, regarding the pure electric pre-lubrication strategy in step S102, when it is determined that the vehicle is operating in pure electric mode, the pre-lubrication strategy is immediately executed. During execution, key conditions are first determined, namely, whether the target vehicle's speed is greater than a preset speed and whether the time elapsed since the last oil lubrication has reached a first preset time. If the target vehicle's speed is greater than the preset speed and the time elapsed since the last oil lubrication has reached the first preset time, the electronic oil pump is controlled to run for a first control time according to the first target speed. This design can reduce unnecessary energy consumption in pure electric mode, extend the vehicle's driving range, and ensure that only... When the vehicle requires lubrication (such as high-speed pure electric driving and a long interval without lubrication), it provides adaptive support to avoid over-lubrication or insufficient lubrication. If the vehicle is driving at low speed in pure electric mode (the speed does not exceed the preset value), pre-lubrication can be temporarily suspended to reduce energy consumption by about 5%-8%. However, if the vehicle is driving at high speed in pure electric mode and the first preset time has passed since the last lubrication, performing pre-lubrication can prevent the motor bearings from aggravating wear due to insufficient lubrication. During pure electric driving, if the oil pressure value is still less than 0.5 bar after three consecutive pre-lubrication strategies, the system will trigger an alarm mechanism to promptly indicate abnormal pressure and further ensure the safe and stable operation of the lubrication system.

[0031] Further, refer to Figure 2 Regarding the non-pure electric formal lubrication strategy in step S103, when it is determined that the vehicle is not in pure electric driving mode, the formal lubrication strategy is executed. This strategy is subdivided into three categories based on the engine oil temperature difference: high temperature, normal temperature, and low temperature, and each corresponds to a different strategy. Each strategy combines engine speed and load to dynamically adjust the control parameters of the electronic oil pump to adapt to the lubrication requirements at different temperatures.

[0032] As an optional embodiment, the formal lubrication strategy includes a high-temperature lubrication strategy. When the target vehicle is not driven purely electric, the formal lubrication strategy is executed, including: determining whether the engine oil temperature is greater than a first preset temperature; in response to the oil temperature being greater than the first preset temperature, the high-temperature lubrication strategy is executed, including: determining whether the engine load is greater than a preset load threshold; in response to the engine load being greater than the preset load threshold, determining whether the engine speed is less than a first preset speed; in response to the engine speed being less than the first preset speed, controlling the speed of the electronic oil pump with a first target oil pressure; in response to the engine speed being not less than the first preset speed and less than a second preset speed, controlling the speed of the electronic oil pump with a second target oil pressure.

[0033] Furthermore, under the high-temperature lubrication strategy, the method also includes: in response to the engine load being less than a preset load threshold, determining whether the engine speed is less than a first preset speed; in response to the engine speed being less than the first preset speed, controlling the speed of the electronic oil pump with a third target oil pressure; in response to the engine speed being not less than the first preset speed and less than the second preset speed, controlling the speed of the electronic oil pump with a first target oil pressure. During non-pure electric driving, the ECU will continuously monitor and control the oil pressure of the lubrication system. If the oil pressure value exceeds the preset ±50kPa after five consecutive executions of the high-temperature lubrication strategy, the ECU will generate corresponding fault information, which will facilitate the rapid retrieval of abnormal data and the location of the root cause of the problem during subsequent maintenance. The above-mentioned high-temperature lubrication strategy can effectively address the problem of reduced oil viscosity under high-temperature conditions, ensuring that the power components always receive sufficient lubrication and fundamentally avoiding the risk of dry friction.

[0034] As an optional embodiment, the formal lubrication strategy includes a normal temperature lubrication strategy. When the target vehicle is not driven purely electric, the formal lubrication strategy is executed, including: determining whether the engine oil temperature is greater than a second preset temperature and less than a first preset temperature; in response to the oil temperature being greater than the second preset temperature and less than the first preset temperature, the normal temperature lubrication strategy is executed, including: determining whether the engine speed is greater than a preset speed threshold; in response to the engine speed being greater than the preset speed threshold, controlling the electronic oil pump to run continuously at a second speed for a second running time; through stable operation during this period, quickly building a uniform and solid oil film for the power system; after completing speed-related regulation, determining whether the engine load is greater than a preset load threshold; in response to the engine load being greater than the preset load threshold, determining whether the engine speed is less than a first preset speed; in response to the engine speed being less than the first preset speed, controlling the speed of the electronic oil pump with a fourth target oil pressure; in response to the engine speed being not less than the first preset speed and less than the second preset speed, controlling the speed of the electronic oil pump with a first target oil pressure.

[0035] Furthermore, under the normal temperature lubrication strategy, the method also includes: in response to the engine load being less than a preset load threshold, determining whether the engine speed is less than a first preset speed; in response to the engine speed being less than the first preset speed, controlling the speed of the electronic oil pump with a fifth target oil pressure; in response to the engine speed being not less than the first preset speed and less than the second preset speed, controlling the speed of the electronic oil pump with a fourth target oil pressure. During non-pure electric driving, the ECU will continuously monitor and control the oil pressure of the lubrication system. If the oil pressure value exceeds the preset ±30kPa after five consecutive executions of the normal temperature lubrication strategy, the ECU will generate corresponding fault information, which will facilitate the rapid retrieval of abnormal data and the location of the root cause of the problem during subsequent maintenance. The above-mentioned normal temperature lubrication strategy takes into account both lubrication effect and energy consumption control, and can perfectly adapt to most scenarios of daily non-pure electric driving of vehicles, such as urban commuting and medium-speed highway driving.

[0036] As an optional embodiment, the formal lubrication strategy includes a low-temperature lubrication strategy. When the target vehicle is not driven purely electric, the formal lubrication strategy is executed, including: determining whether the engine oil temperature is lower than a second preset temperature; in response to the oil temperature being lower than the second preset temperature, the low-temperature lubrication strategy is executed, including: determining whether the engine speed is higher than a preset speed threshold; in response to the engine speed being higher than the preset speed threshold, controlling the electronic oil pump to run continuously at a third speed for a third running duration; in low-temperature environments, the oil viscosity is high and the fluidity is poor. Continuous operation at a higher speed can accelerate the circulation of the oil in the system, effectively solving the lubrication lag problem. After completing the speed control, determining whether the engine load is higher than a preset load threshold; in response to the engine load being higher than the preset load threshold, determining whether the engine speed is lower than a first preset speed; in response to the engine speed being lower than the first preset speed, controlling the speed of the electronic oil pump with a sixth target oil pressure; in response to the engine speed being not lower than the first preset speed and lower than the second preset speed, controlling the speed of the electronic oil pump with a seventh target oil pressure.

[0037] Furthermore, under the low-temperature lubrication strategy, the method also includes: in response to the engine load being less than a preset load threshold, determining whether the engine speed is less than a first preset speed; in response to the engine speed being less than the first preset speed, controlling the speed of the electronic oil pump with a fourth target oil pressure; in response to the engine speed being not less than the first preset speed and less than the second preset speed, controlling the speed of the electronic oil pump with a sixth target oil pressure. During non-pure electric driving, the ECU will continuously monitor and control the oil pressure of the lubrication system. If the oil pressure value exceeds the preset ±50kPa after five consecutive executions of the low-temperature lubrication strategy, the ECU will generate corresponding fault information, which will facilitate the rapid retrieval of abnormal data and the location of the root cause of the problem during subsequent maintenance. The above-mentioned low-temperature lubrication strategy, through the combined working mode of speed promoting flow and pressure maintaining lubrication, comprehensively ensures the lubrication reliability of the power system during cold starts and low-temperature driving.

[0038] Furthermore, if the engine speed is not less than the second preset speed, the speed of the electronic oil pump is controlled by the seventh target oil pressure under the high-temperature lubrication strategy; if the engine speed is not less than the second preset speed, the speed of the electronic oil pump is controlled by the second target oil pressure under the normal temperature lubrication strategy; if the engine speed is not less than the second preset speed, the speed of the electronic oil pump is controlled by the eighth target oil pressure under the low-temperature lubrication strategy.

[0039] As a specific implementation, when it is determined that the vehicle is operating in pure electric mode, a pre-lubrication strategy is immediately executed. During the execution process, key conditions are first determined, namely, whether the target vehicle's speed is greater than 15 km / h (preset speed) and whether the time since the last oil lubrication is 1 hour (first preset time). When the target vehicle's speed is greater than 15 km / h (preset speed) and the time since the last oil lubrication is 1 hour (first preset time), the electronic oil pump is controlled to run at 500 r / min (first target speed) for 5 seconds (first control time). This design can reduce unnecessary power consumption in pure electric mode on the one hand, and avoid over-lubrication or insufficient lubrication on the other hand, ensuring the safe and stable operation of the lubrication system.

[0040] As a specific implementation, when the target vehicle is not driven purely electric, the formal lubrication strategy is executed. First, it is determined whether the engine oil temperature is greater than 130°C (first preset temperature). If the oil temperature is greater than 130°C (first preset temperature), a high-temperature lubrication strategy is executed. Further, it is determined whether the engine load is greater than 10 bar (preset load threshold). If the engine load is greater than 10 bar (preset load threshold), it is determined whether the engine speed is less than 3500 r / min (first preset speed). If the engine speed is less than 3500 r / min (first preset speed), the speed of the electronic oil pump is controlled at 3.3 bar (first target oil pressure). If the engine speed is not less than 3500 r / min (first preset speed) and less than 4500 r / min (second preset speed), the speed of the electronic oil pump is controlled at 3.8 bar (second target oil pressure). The speed of the electronic oil pump is controlled as follows: If the engine load is less than 10 bar (preset load threshold), determine if the engine speed is less than 3500 r / min (first preset speed). If the engine speed is less than 3500 r / min (first preset speed), control the speed of the electronic oil pump at 2.2 bar (third target oil pressure). If the engine speed is not less than 3500 r / min (first preset speed) and less than 4500 r / min (second preset speed), control the speed of the electronic oil pump at 3.3 bar (first target oil pressure). If the engine speed is not less than 4500 r / min (second preset speed), control the speed of the electronic oil pump at 4.3 bar (seventh target oil pressure). The above high-temperature lubrication strategy can effectively deal with the decrease in oil viscosity under high-temperature conditions, ensure that the power components continuously receive sufficient lubrication, and avoid the risks caused by dry friction.

[0041] As a specific implementation, when the target vehicle is not driven purely electric, the formal lubrication strategy is executed. First, it is determined whether the engine oil temperature is greater than 20°C (second preset temperature) and less than 130°C (first preset temperature). If the oil temperature is greater than 20°C (second preset temperature) and less than 130°C (first preset temperature), a normal temperature lubrication strategy is executed. Further, it is determined whether the engine speed is greater than 10 r / min (preset speed threshold). If the engine speed is greater than 10 r / min (preset speed threshold), the electronic oil pump is controlled to run continuously at 3000 r / min (second speed) for 10 seconds (second running time). It is then determined whether the engine load is greater than 10 bar (preset load threshold). If the engine load is greater than 10 bar (preset load threshold), it is determined whether the engine speed is less than 3500 r / min (first preset speed). If the engine speed is less than 3500 r / min (first preset speed), the speed of the electronic oil pump is controlled at 2.7 bar (fourth target oil pressure). If the engine speed is not less than 3500 r / min... When the engine speed is 0 r / min (first preset speed) and less than 4500 r / min (second preset speed), the speed of the electronic oil pump is controlled at 3.3 bar (first target oil pressure). If the engine load is less than 10 bar (preset load threshold), it is determined whether the engine speed is less than 3500 r / min (first preset speed). If the engine speed is less than 3500 r / min (first preset speed), the speed of the electronic oil pump is controlled at 1.5 bar (fifth target oil pressure). In response to the engine speed being not less than 3500 r / min (first preset speed) and less than 4500 r / min (second preset speed), the speed of the electronic oil pump is controlled at 2.7 bar (fourth target oil pressure). If the engine speed is not less than 4500 r / min (second preset speed), the speed of the electronic oil pump is controlled at 3.8 bar (second target oil pressure). The above-mentioned normal temperature lubrication strategy ensures lubrication effect while taking into account energy consumption control, and can perfectly adapt to most scenarios of daily non-pure electric driving of vehicles, such as urban commuting and medium-speed highway driving.

[0042] As a specific implementation, when the target vehicle is not driven purely electric, the formal lubrication strategy is executed. First, it is determined whether the engine oil temperature is less than 20°C (second preset temperature). If the oil temperature is less than 20°C (second preset temperature), a low-temperature lubrication strategy is executed. Further, it is determined whether the engine speed is greater than 10 r / min (preset speed threshold). If the engine speed is greater than 10 r / min (preset speed threshold), the electronic oil pump is controlled to run continuously at 4000 r / min (third speed) for 15 seconds (third running time). Next, it is determined whether the engine load is greater than 10 bar (preset load threshold). If the engine load is greater than 10 bar (preset load threshold), it is determined whether the engine speed is less than 3500 r / min (first preset speed). If the engine speed is less than 3500 r / min (first preset speed), the speed of the electronic oil pump is controlled at 3.6 bar (sixth target oil pressure). In response to the engine speed not being less than 3500 r / min (first preset speed), the lubrication strategy is executed. If the engine speed is less than 4500 r / min (second preset speed), the speed of the electronic oil pump is controlled at 4.3 bar (seventh target oil pressure). If the engine load is less than 10 bar (preset load threshold), it is determined whether the engine speed is less than 3500 r / min (first preset speed). If the engine speed is less than 3500 r / min (first preset speed), the speed of the electronic oil pump is controlled at 2.7 bar (fourth target oil pressure). In response to the engine speed being not less than 3500 r / min (first preset speed) and less than 4500 r / min (second preset speed), the speed of the electronic oil pump is controlled at 3.6 bar (sixth target oil pressure). If the engine speed is not less than 4500 r / min (second preset speed), the speed of the electronic oil pump is controlled at 4.8 bar (eighth target oil pressure). The above low-temperature lubrication strategy, through the combination of speed promoting flow and pressure maintaining lubrication, comprehensively ensures the lubrication reliability of the power system during cold starts and low-temperature driving of the vehicle.

[0043] Further, refer to Figure 3 The electronic oil pump system 300 consists of an electronic oil pump, sensors, an ECU control module, and an alarm module. The electronic oil pump is connected to the ECU, which outputs a target oil pressure value based on parameters such as engine speed, engine load, oil temperature, and oil pressure. It achieves closed-loop control of oil pressure by controlling the speed of the electronic oil pump. During system operation, if the oil pressure exceeds the preset target value range, the alarm module will be triggered. Specifically, the alarm will be triggered if the oil pressure exceeds the range after three consecutive starts. At the same time, the ECU will monitor the oil pressure in real time. If it detects five consecutive pressure exceeding the preset range, it will automatically generate fault information to record the abnormal state.

[0044] The high-temperature lubrication strategy, normal-temperature lubrication strategy, and low-temperature lubrication strategy are all based on non-pure electric driving as the premise. The engine oil temperature is the core classification basis. Combined with the two key parameters of engine speed and engine load, the control mode of the electronic oil pump is dynamically adjusted. This multi-dimensional and refined design completely solves the problem of poor adaptability of the traditional uniform lubrication strategy under different operating conditions, avoiding the drawbacks such as insufficient lubrication at high temperatures, excessive energy consumption at normal temperatures, and lag in low-temperature lubrication. On the other hand, it achieves the core goal of on-demand lubrication. In high-temperature scenarios, it focuses on strengthening lubrication intensity to cope with viscosity reduction. In normal-temperature scenarios, it balances lubrication efficiency and energy consumption to adapt to daily driving. In low-temperature scenarios, it focuses on solving the fluidity problem to ensure cold start safety. Overall, it ensures the lubrication reliability and operating economy of the power system in non-pure electric driving mode, providing strong support for the long-term stable operation of the vehicle.

[0045] Based on the same concept, corresponding to the methods provided in any of the above embodiments, this application also provides a control device for an electronic oil pump system.

[0046] refer to Figure 4 This is a schematic diagram of the control device for the electronic oil pump system provided in the embodiments of this application.

[0047] The control device 400 of the electronic oil pump system includes: a determination module 401, a first response module 402, and a second response module 403.

[0048] The determination module 401 is configured to determine the driving mode of the target vehicle; the first response module 402 is configured to execute a pre-lubrication strategy in response to the target vehicle's driving mode being pure electric driving; the second response module 403 is configured to execute a formal lubrication strategy in response to the target vehicle's driving mode being non-pure electric driving; wherein, in the formal lubrication strategy, the speed and running time of the electronic oil pump are less than the speed and running time of the electronic oil pump in the formal lubrication strategy.

[0049] Optionally, the first response module 402 is also configured as follows: Determine whether the target vehicle's speed is greater than the preset speed and whether the time since the last oil lubrication has reached the first preset time. In response to the target vehicle's speed being greater than the preset speed and the time elapsed since the last oil lubrication reaching the first preset time, the electronic oil pump is controlled to run for the first control time according to the first target speed.

[0050] Optional, formal lubrication strategies include high-temperature lubrication strategies; The second response module 403 is also configured as follows: Determine if the engine oil temperature is higher than a first preset temperature. In response to the oil temperature being higher than the first preset temperature, execute a high-temperature lubrication strategy, including: Determine if the engine load exceeds the preset load threshold; In response to an engine load exceeding a preset load threshold, determine whether the engine speed is less than a first preset speed; In response to the engine speed being lower than a first preset speed, the speed of the electronic oil pump is controlled by a first target oil pressure; In response to an engine speed that is not less than a first preset speed and less than a second preset speed, the speed of the electronic oil pump is controlled by a second target oil pressure.

[0051] Optionally, the second response module 403 is also configured to: In response to the engine load being less than a preset load threshold, determine whether the engine speed is less than a first preset speed; In response to the engine speed being lower than the first preset speed, the speed of the electronic oil pump is controlled by the third target oil pressure; In response to an engine speed that is not less than a first preset speed and less than a second preset speed, the speed of the electronic oil pump is controlled by a first target oil pressure.

[0052] Optional, formal lubrication strategies include ambient temperature lubrication strategies; The second response module 403 is also configured as follows: Determine whether the engine speed is greater than a preset speed threshold, and in response to the engine speed being greater than the preset speed threshold, control the electronic oil pump to run continuously at a second speed for a second running time. Determine if the engine load exceeds the preset load threshold; In response to an engine load exceeding a preset load threshold, determine whether the engine speed is less than a first preset speed; In response to the engine speed being lower than the first preset speed, the speed of the electronic oil pump is controlled by the fourth target oil pressure; In response to an engine speed that is not less than a first preset speed and less than a second preset speed, the speed of the electronic oil pump is controlled by a first target oil pressure.

[0053] Optionally, the second response module 403 is also configured to: In response to the engine load being less than a preset load threshold, determine whether the engine speed is less than a first preset speed; In response to the engine speed being lower than the first preset speed, the speed of the electronic oil pump is controlled by the fifth target oil pressure; In response to the engine speed being not less than the first preset speed and less than the second preset speed, the speed of the electronic oil pump is controlled by the fourth target oil pressure.

[0054] Optional, formal lubrication strategies include low-temperature lubrication strategies; The second response module 403 is also configured as follows: Determine whether the engine speed is greater than a preset speed threshold, and in response to the engine speed being greater than the preset speed threshold, control the electronic oil pump to run continuously at a third speed for a third running time. Determine if the engine load exceeds the preset load threshold; In response to an engine load exceeding a preset load threshold, determine whether the engine speed is less than a first preset speed; In response to the engine speed being lower than the first preset speed, the speed of the electronic oil pump is controlled by the sixth target oil pressure; In response to the engine speed being not less than the first preset speed and less than the second preset speed, the speed of the electronic oil pump is controlled by the seventh target oil pressure.

[0055] Optionally, the second response module 403 is also configured to: In response to the engine load being less than a preset load threshold, determine whether the engine speed is less than a first preset speed; In response to the engine speed being lower than the first preset speed, the speed of the electronic oil pump is controlled by the fourth target oil pressure; In response to the engine speed being not less than the first preset speed and less than the second preset speed, the speed of the electronic oil pump is controlled by the sixth target oil pressure.

[0056] According to the control device of the electronic oil pump system provided in this application, by dividing the control device into modules and combining the design of ECU closed-loop control and alarm module, the lubrication strategy is adapted according to the vehicle driving mode. By real-time monitoring of oil pressure, triggering graded alarms and generating fault information, abnormal states are captured in a timely manner. Ultimately, while ensuring the lubrication reliability of the power system, energy consumption optimization and fault warning are taken into account, achieving multi-dimensional efficient operation and management.

[0057] Corresponding to the above embodiments, this application also provides an electronic device.

[0058] refer to Figure 5 The diagram below is a block diagram of an electronic device according to some embodiments of the present invention. It illustrates a more specific hardware structure of the electronic device provided in this embodiment. The device may include: a processor 510, a memory 520, an input / output interface 530, a communication interface 540, and a bus 550. The processor 510, memory 520, input / output interface 530, and communication interface 540 are interconnected internally via the bus 550.

[0059] The processor 510 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0060] The memory 520 can be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 520 can store the operating system and other applications. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program code is stored in the memory 520 and is called and executed by the processor 510.

[0061] Input / output interface 530 is used to connect input / output modules to realize information input and output. Input / output modules can be configured as components in the device (not shown in the figure) or externally connected to the device to provide corresponding functions. Input devices may include keyboards, mice, touch screens, microphones, various sensors, etc., and output devices may include displays, speakers, vibrators, indicator lights, etc.

[0062] The communication interface 540 is used to connect a communication module (not shown in the figure) to enable communication between this device and other devices. The communication module can communicate via wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.).

[0063] Bus 550 includes a pathway for transmitting information between various components of the device, such as processor 510, memory 520, input / output interface 530, and communication interface 540.

[0064] It should be noted that although the above-described device only shows the processor 510, memory 520, input / output interface 530, communication interface 540, and bus 550, in specific implementations, the device may also include other components necessary for normal operation. Furthermore, those skilled in the art will understand that the above-described device may only include the components necessary for implementing the embodiments of this specification, and not necessarily all the components shown in the figures.

[0065] The electronic devices described above are used to implement the corresponding methods in any of the foregoing embodiments and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0066] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0067] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0068] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. A control method for an electronic oil pump system, characterized in that, include: Determine the target vehicle's mode of transportation; In response to the target vehicle's driving mode being pure electric driving, a pre-lubrication strategy is executed; In response to the target vehicle's non-pure electric driving mode, a formal lubrication strategy is executed; wherein, in the pre-lubrication strategy, the speed and running time of the electric oil pump are less than those of the electric oil pump in the formal lubrication strategy.

2. The control method for the electronic oil pump system according to claim 1, characterized in that, The pre-lubrication strategy, implemented in response to the target vehicle's driving mode being pure electric driving, includes: Determine whether the target vehicle's speed is greater than a preset speed and whether the time elapsed since the last oil lubrication has reached a first preset time. In response to the target vehicle's speed being greater than the preset speed and the time elapsed since the last oil lubrication reaching the first preset time, the electronic oil pump is controlled to operate for a first control time according to the first target speed.

3. The control method for the electronic oil pump system according to claim 2, characterized in that, The formal lubrication strategy includes a high-temperature lubrication strategy; The response to the target vehicle's driving mode being non-pure electric driving, executing a formal lubrication strategy, includes: Determine whether the engine oil temperature is greater than a first preset temperature, and in response to the oil temperature being greater than the first preset temperature, execute the high-temperature lubrication strategy, including: Determine whether the engine load exceeds a preset load threshold; In response to the engine load being greater than the preset load threshold, it is determined whether the engine speed is less than a first preset speed; In response to the engine speed being lower than the first preset speed, the speed of the electronic oil pump is controlled by the first target oil pressure; In response to the engine speed being not less than the first preset speed and less than the second preset speed, the speed of the electronic oil pump is controlled by the second target oil pressure.

4. The control method for the electronic oil pump system according to claim 3, characterized in that, The method further includes: In response to the engine load being less than the preset load threshold, it is determined whether the engine speed is less than a first preset speed; In response to the engine speed being lower than the first preset speed, the speed of the electronic oil pump is controlled by a third target oil pressure; In response to the engine speed being not less than the first preset speed and less than the second preset speed, the speed of the electronic oil pump is controlled by the first target oil pressure.

5. The control method for the electronic oil pump system according to claim 2, characterized in that, The formal lubrication strategy includes a normal temperature lubrication strategy; The response to the target vehicle's driving mode being non-pure electric driving, executing a formal lubrication strategy, includes: Determine whether the engine oil temperature is greater than a second preset temperature and less than a first preset temperature. In response to the oil temperature being greater than the second preset temperature and less than the first preset temperature, execute the ambient temperature lubrication strategy, including: Determine whether the engine speed is greater than a preset speed threshold, and in response to the engine speed being greater than the preset speed threshold, control the electronic oil pump to run continuously at a second speed for a second running time; Determine whether the engine load exceeds a preset load threshold; In response to the engine load being greater than the preset load threshold, it is determined whether the engine speed is less than a first preset speed; In response to the engine speed being lower than the first preset speed, the speed of the electronic oil pump is controlled by a fourth target oil pressure; In response to the engine speed being not less than the first preset speed and less than the second preset speed, the speed of the electronic oil pump is controlled by the first target oil pressure.

6. The control method for the electronic oil pump system according to claim 5, characterized in that, The method further includes: In response to the engine load being less than the preset load threshold, it is determined whether the engine speed is less than a first preset speed; In response to the engine speed being lower than the first preset speed, the speed of the electronic oil pump is controlled by the fifth target oil pressure; In response to the engine speed being not less than the first preset speed and less than the second preset speed, the speed of the electronic oil pump is controlled by the fourth target oil pressure.

7. The control method for the electronic oil pump system according to claim 2, characterized in that, The formal lubrication strategy includes a low-temperature lubrication strategy; The response to the target vehicle's driving mode being non-pure electric driving, executing a formal lubrication strategy, includes: Determine whether the engine oil temperature is lower than a second preset temperature, and in response to the oil temperature being lower than the second preset temperature, execute the low-temperature lubrication strategy, including: Determine whether the engine speed is greater than a preset speed threshold, and in response to the engine speed being greater than the preset speed threshold, control the electronic oil pump to run continuously at a third speed for a third running time. Determine whether the engine load exceeds a preset load threshold; In response to the engine load being greater than the preset load threshold, it is determined whether the engine speed is less than a first preset speed; In response to the engine speed being lower than the first preset speed, the speed of the electronic oil pump is controlled by the sixth target oil pressure; In response to the engine speed being not less than the first preset speed and less than the second preset speed, the speed of the electronic oil pump is controlled by the seventh target oil pressure.

8. The control method for the electronic oil pump system according to claim 7, characterized in that, The method further includes: In response to the engine load being less than the preset load threshold, it is determined whether the engine speed is less than a first preset speed; In response to the engine speed being lower than the first preset speed, the speed of the electronic oil pump is controlled by a fourth target oil pressure; In response to the engine speed being not less than the first preset speed and less than the second preset speed, the speed of the electronic oil pump is controlled by the sixth target oil pressure.

9. A control device for an electronic oil pump system, characterized in that, include: The determination module is configured to determine the driving mode of the target vehicle; The first response module is configured to execute a pre-lubrication strategy in response to the target vehicle's driving mode being pure electric driving; The second response module is configured to execute a formal lubrication strategy in response to the target vehicle's driving mode being non-pure electric driving; wherein the rotational speed and running time of the electronic oil pump in the formal lubrication strategy are less than the rotational speed and running time of the electronic oil pump in the formal lubrication strategy.

10. An electronic device, characterized in that, include: A processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the control method for the electronic oil pump system as claimed in any one of claims 1 to 8.

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