Hybrid vehicle oil pump control method and related equipment

Abstract

The invention discloses a hybrid vehicle oil pump control method and related equipment, and relates to the technical field of hybrid vehicles, the method comprises the following steps: obtaining a driving mode of a target vehicle; based on the driving mode, engine lubrication required power and motor lubrication required power are determined; according to the engine lubrication required power and the motor lubrication required power, target control power of a duplex electronic oil pump is determined; and based on the target control power, a rotating speed control instruction is sent to a motor driving the duplex electronic oil pump. Through the design of the integrated oil pan and the duplex electronic oil pump and in combination with an intelligent lubrication control strategy based on a driving mode, structure simplification, cost reduction and efficient and reliable multi-working-condition lubrication management are achieved, and the performance and stability of the whole vehicle can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hybrid vehicles, more particularly, the present application relates to a hybrid vehicle oil pump control method and related equipment. BACKGROUND

[0002] With the continuous development of new energy vehicle technology, hybrid power systems are widely used in passenger cars and commercial vehicles due to their advantages of fuel economy and power performance; to ensure the efficient operation of the engine system and electric drive system in the hybrid vehicle in various driving modes, the performance of the lubrication system plays a key role, especially under the trend of highly integrated system structure and complex electric control, how to realize the fine management of lubrication supply becomes an important issue in vehicle system design.

[0003] In related technologies, the engine and electric drive system of the hybrid vehicle are often independently configured with an oil pan and a lubricating oil pump, which has certain working reliability, but the overall structure is complex and occupies a large space, which is not conducive to the lightweight design and integrated arrangement of the vehicle; and independent control of multiple oil pumps can lead to heavy control system burden, high failure rate and rising maintenance cost, which is not conducive to industrialization and application; in addition, the existing oil pump control strategy usually uses fixed speed or simple mapping method for oil supply, which cannot adjust in real time according to the dynamic lubrication demand of the engine and electric drive system under actual driving mode, and this extensive control method cannot balance economy and lubrication performance, and may lead to insufficient lubrication or high energy consumption under long-term operation or special working conditions, thereby affecting system stability and vehicle performance. That is, the related technology has problems such as redundant lubrication system structure, extensive control and inaccurate response. SUMMARY

[0004] A series of simplified concepts are introduced in the summary part of the present application, which will be further described in detail in the specific embodiment part. The summary part of the present application does not mean to try to limit the key features and necessary technical features of the claimed technical solution, and even less means to determine the protection scope of the claimed technical solution.

[0005] The hybrid vehicle oil pump control method and related equipment provided by the present application can realize structure simplification, cost reduction and efficient and reliable multi-condition lubrication management by integrating the oil pan and the double electronic oil pump, and combining the intelligent lubrication control strategy based on driving mode, which can improve the vehicle performance and stability.

[0006] In a first aspect, the application provides a hybrid vehicle oil pump control method, applied to a target vehicle provided with an integrated oil pan and a double electronic oil pump, the integrated oil pan comprising an engine oil cavity and an electric drive oil cavity physically isolated from each other, and the double electronic oil pump comprising independent oil pumps belonging to the engine oil cavity and the electric drive oil cavity respectively and driven by a single motor. The hybrid vehicle oil pump control method comprises: obtaining a driving mode of the target vehicle; determining an engine lubrication demand power and a motor lubrication demand power based on the driving mode, wherein the engine lubrication demand power is a lubrication demand power of an engine system of the target vehicle, and the motor lubrication demand power is a lubrication demand power of an electric drive system of the target vehicle; determining a target control power of the double electronic oil pump according to the engine lubrication demand power and the motor lubrication demand power; and sending a speed control instruction to a motor driving the double electronic oil pump based on the target control power.

[0007] In some embodiments, the determining of the engine lubrication demand power and the motor lubrication demand power based on the driving mode comprises: obtaining a preset lubrication demand mapping relationship corresponding to the driving mode, wherein the driving mode is any one of a pure electric driving mode, a parallel driving mode, a series driving mode, an engine direct driving mode and a parking power generation mode; and determining the engine lubrication demand power and the motor lubrication demand power from the preset lubrication demand mapping relationship according to oil temperature information and speed information of the target vehicle.

[0008] In some embodiments, the determining of the engine lubrication demand power and the motor lubrication demand power from the preset lubrication demand mapping relationship according to oil temperature information and speed information of the target vehicle comprises: when the driving mode is the pure electric driving mode, determining the engine lubrication demand power and the motor lubrication demand power from a first lubrication demand mapping relationship according to the oil temperature information and the speed information of the target vehicle, wherein the first lubrication demand mapping relationship sets the engine lubrication demand power as a constant zero value and sets the motor lubrication demand power to be determined based on a temperature value of the electric drive oil cavity and a motor speed; and when the driving mode is the engine direct driving mode, determining the engine lubrication demand power and the motor lubrication demand power from a second lubrication demand mapping relationship according to the oil temperature information and the speed information of the target vehicle, wherein the second lubrication demand mapping relationship sets the engine lubrication demand power to be positively correlated with engine power and sets the motor lubrication demand power as a constant safety power threshold.

[0009] In some embodiments, the determining the engine lubrication demand power and the motor lubrication demand power from the preset lubrication demand mapping relationship according to the oil temperature information and the rotation speed information of the target vehicle further comprises: when the driving mode is the parallel driving mode or the series driving mode, determining the engine lubrication demand power and the motor lubrication demand power from a third lubrication demand mapping relationship according to the oil temperature information and the rotation speed information of the target vehicle, wherein the third lubrication demand mapping relationship sets the engine lubrication demand power positively correlated with the engine rotation speed and sets the motor lubrication demand power positively correlated with the motor rotation speed.

[0010] In some embodiments, the determining the engine lubrication demand power and the motor lubrication demand power from the preset lubrication demand mapping relationship according to the oil temperature information and the rotation speed information of the target vehicle further comprises: when the driving mode is the parallel driving mode or the series driving mode, determining the engine lubrication demand power and the motor lubrication demand power from a third lubrication demand mapping relationship according to the oil temperature information and the rotation speed information of the target vehicle, wherein the third lubrication demand mapping relationship sets the engine lubrication demand power positively correlated with the engine rotation speed and sets the motor lubrication demand power positively correlated with the motor rotation speed.

[0011] In some embodiments, the determining the target control power of the dual electronic oil pump according to the engine lubrication demand power and the motor lubrication demand power comprises: multiplying the engine lubrication demand power by a first dynamic weight coefficient to obtain a first weight correction value, wherein the first dynamic weight coefficient is determined according to a real-time thermal load state of the engine oil cavity; multiplying the motor lubrication demand power by a second dynamic weight coefficient to obtain a second weight correction value, wherein the second dynamic weight coefficient is determined according to a real-time thermal load state of the motor oil cavity, and the first dynamic weight coefficient and the second dynamic weight coefficient are both less than or equal to 1; and adding the first weight correction value and the second weight correction value to obtain the target control power.

[0012] In some embodiments, the sending a rotation speed control instruction to a motor driving the dual electronic oil pump based on the target control power comprises: determining a target rotation speed value corresponding to the target control power according to a preset power-rotation speed mapping relationship; generating a rotation speed PID adjustment signal based on a difference between the target rotation speed value and a current actual rotation speed; and performing a driving operation on an inverter of the motor through the rotation speed PID adjustment signal.

[0013] In a second aspect, the application further provides a hybrid vehicle oil pump control device, applied to a target vehicle provided with an integrated oil pan and a double electronic oil pump, the integrated oil pan comprising an engine oil cavity and an electric drive oil cavity which are physically isolated from each other, and the double electronic oil pump comprising independent oil pumps belonging to the engine oil cavity and the electric drive oil cavity and driven by a single motor, the hybrid vehicle oil pump control device comprising: a mode acquisition unit configured to acquire a driving mode of the target vehicle; a mode power mapping unit configured to determine an engine lubrication demand power and a motor lubrication demand power based on the driving mode, wherein the engine lubrication demand power is a lubrication demand power of an engine system of the target vehicle, and the motor lubrication demand power is a lubrication demand power of an electric drive system of the target vehicle; a power determination unit configured to determine a target control power of the double electronic oil pump according to the engine lubrication demand power and the motor lubrication demand power; and a speed control unit configured to send a speed control instruction to a motor driving the double electronic oil pump based on the target control power.

[0014] In a third aspect, the application further provides an electronic device, comprising a memory and a processor, wherein the processor is configured to implement the steps of the hybrid vehicle oil pump control method of the first aspect when executing a computer program stored in the memory.

[0015] In a fourth aspect, the application further provides a computer-readable storage medium, storing a computer program, wherein the computer program is configured to implement the steps of the hybrid vehicle oil pump control method of the first aspect when executed by a processor.

[0016] In a fifth aspect, the application further provides a computer program product, comprising a computer program or computer executable instructions, wherein the computer program or computer executable instructions are configured to implement the hybrid vehicle oil pump control method provided in the application when executed by a processor.

[0017] In summary, the oil sump structure integrating the engine oil cavity and the electric drive system oil cavity can reduce the volume and the number of parts of the lubrication system of the vehicle. Compared with the traditional oil sump design arranged separately, the integrated structure is conducive to improving the engine compartment layout efficiency, reducing the weight of the vehicle, and achieving higher vehicle system integration and lightweight goals. The dual electronic oil pump driven by a single motor can supply lubrication requirements of the engine oil cavity and the electric drive oil cavity respectively, can avoid the problem of independent control of multiple motors, reduce the complexity of the control system and the risk of failure, simplify the production and manufacturing process, and improve the economy and reliability of the vehicle. According to the current driving mode of the vehicle, the actual lubrication power requirements of the engine system and the electric drive system are determined respectively, and the target control power of the oil pump motor is calculated accordingly, so as to realize dynamic speed regulation and accurate lubrication supply. The real-time control strategy based on the working condition can avoid excessive lubrication and insufficient lubrication, and improve the operation efficiency of the engine system and the electric drive system. By real-time identification of the lubrication power requirements of the engine and the electric drive system and dynamic adjustment of the oil pump control parameters, the lubrication safety of the vehicle in different driving modes can be ensured, and the temperature adaptability and fault redundancy capability are good, which can effectively improve the long-term stability of the lubrication system and the service life of the vehicle. In summary, the oil pump control method for the hybrid vehicle provided in the application realizes structure simplification, cost reduction, and efficient and reliable multi-working-condition lubrication management by the integrated oil sump and the dual electronic oil pump design, and the intelligent lubrication control strategy based on the driving mode, which can improve the performance and stability of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to be limiting in Figure 1 A flowchart of a hybrid vehicle oil pump control method provided by an embodiment of the application; Figure 2 A component structure schematic diagram of a hybrid vehicle oil pump control device provided by an embodiment of the application; Figure 3 A component structure schematic diagram of an electronic device provided by an embodiment of the application. DETAILED DESCRIPTION

[0019] The terms in the specification, claims and drawings of the present application, such as "first", "second", "third", "fourth", etc. (if any), are used to distinguish similar objects, not to describe a particular order or sequence. Therefore, it is understood that these terms can be used interchangeably under appropriate circumstances, so that the described embodiments can be in different order, unless the drawing or description specifically requires otherwise. In addition, the terms "is" and "has" and any variants thereof in the present application are intended to cover non-exclusive inclusion of all possible constituent elements. For example, a process, method, system, product or device including several steps or units need not be limited to only the steps or units explicitly listed, but can also include other steps or units not explicitly listed, or steps or units inherent to the process, method, product or device.

[0020] In the present application, "module" or "unit" refers to a computer program or a part of a computer program with a specific function, and works with other related parts to achieve a predetermined goal. These modules or units can be implemented by software, hardware (such as processing circuitry or memory) or a combination of both. One or more processors or memories can implement one or more modules or units. At the same time, each module or unit can also be part of a larger module or unit.

[0021] The technical solutions in the present application will be described in detail below in conjunction with the drawings in the embodiments. It should be noted that the described embodiments are only a part of the present application, not all embodiments. In the following description, "some embodiments" mentioned is only a subset of all possible embodiments, which can be the same or different subset, and different embodiments can be combined with each other without conflict.

[0022] Figure 1 is a flowchart of a hybrid vehicle oil pump control method provided by an embodiment of the present application. For example, referring to Figure 1 The hybrid vehicle oil pump control method provided by the embodiment of the present application is applied to a target vehicle provided with an integrated oil pan and a double electronic oil pump. The integrated oil pan includes an engine oil cavity and an electric drive oil cavity which are physically isolated from each other. The double electronic oil pump includes independent oil pumps belonging to the engine oil cavity and the electric drive oil cavity respectively and driven by a single motor. The hybrid vehicle oil pump control method can include the following steps 101 to 104: Step 101, obtaining the driving mode of the target vehicle; In some examples, the integrated oil pan is a structure-integrated design oil pan, which designs the engine oil cavity and the electric drive oil cavity in one overall housing, but realizes fluid isolation through physical structure to prevent the lubricating oil of the two from mixing. The double electronic oil pump is a component that integrates two independent pump bodies that are not connected to each other, which are respectively used to supply oil to the engine oil cavity and the electric drive oil cavity, but share one driving motor. The structure of the double electronic oil pump can reduce complexity while realizing double-cavity lubrication control. The target vehicle refers to a specific type of hybrid vehicle to which the embodiments of the present application are applied. The target vehicle has the basic configuration of the integrated oil pan and the double electronic oil pump structure described above. The engine oil cavity is a cavity area for storing and supplying engine oil required by the engine lubrication system, which is arranged in the integrated oil pan and connected to the internal lubrication circuit of the engine. The electric drive oil cavity is an independent oil cavity for providing lubrication and cooling for the electric drive system such as the motor and the reducer in the hybrid vehicle, which is also located in the integrated oil pan but is physically isolated from the engine oil cavity. The driving mode refers to various power system operating states defined in the control strategy of the target vehicle, including pure electric drive, parallel drive, series drive, engine direct drive, and parking power generation, etc. The current working mode can be obtained through the vehicle controller, for example, if the current CAN bus state is "EV_MODE", it means that the target vehicle is in the pure electric drive stage and the engine is not working.

[0023] Through the implementation of step 101, the driving mode of the vehicle is identified in real time, which can accurately reflect the operating state of the current power system and provide a key basis for subsequent lubrication demand judgment, ensuring that the lubrication control strategy has working condition adaptability, thereby avoiding blind oil supply and improving the operating efficiency and precision of the lubrication system.

[0024] Step 102, based on the driving mode, determining the engine lubrication demand power and the motor lubrication demand power, wherein the engine lubrication demand power is the lubrication demand power of the engine system of the target vehicle, and the motor lubrication demand power is the lubrication demand power of the electric drive system of the target vehicle; In some examples, the engine lubrication demand power refers to the hydraulic system power required to maintain normal lubrication of moving parts inside the engine such as the crankshaft, camshaft, valves, etc. under the current working condition, which is mainly affected by factors such as engine speed, load, oil temperature, etc. The engine lubrication demand power can be regarded as the hydraulic power value that the oil pump must provide to the engine oil cavity, which can be obtained by acquiring the current engine speed, engine load percentage and oil temperature, and looking up the lubrication demand power in a preset mapping table; for example, when the engine speed is 2500 rpm, the load is 50%, and the oil temperature is 80°C, the lubrication power is 75W. The motor lubrication demand power refers to the oil cooling and lubrication power demand required for normal operation of moving parts in the current electric drive system such as the driving motor, reduction mechanism, bearing, etc., which is mainly related to the motor speed, motor load, gear meshing state and oil cavity temperature. The required lubrication power can be obtained from the electric drive mapping relationship based on the current motor speed, current (load) and electric drive oil cavity temperature value; for example, when the motor runs at 3000 rpm and the oil temperature is 90°C, the corresponding lubrication power demand is 65W. The engine system includes mechanical structures such as internal combustion engine body, oil circuit, lubrication pipeline, cylinder head, cylinder block and their control units. The electric drive system mainly includes driving motor, reducer, differential, controller, etc., which is responsible for providing vehicle driving torque.

[0025] Through the implementation of step 102, the lubrication demand of the engine and the electric drive system is evaluated according to the actual working conditions under different driving modes, so that the oil supply strategy is more personalized and accurate, which can avoid energy waste caused by excessive oil supply, and effectively prevent hardware wear or failure caused by insufficient lubrication, and improve the reliability and service life of the lubrication system.

[0026] Step 103, determining the target control power of the double electronic oil pump according to the engine lubrication demand power and the motor lubrication demand power; In some examples, the target control power refers to the combined hydraulic drive power that the double electronic oil pump needs to output by the common motor to meet the lubrication demand of the engine oil cavity and the electric drive oil cavity at the current moment. Since the double oil pump adopts a structure of a single motor driving two independent pump bodies, the two lubrication power demands need to be coordinated and combined, and a unified and dynamically changing target control power is output. For example, the current engine lubrication demand power is 70W, the motor lubrication demand power is 60W, and the current thermal load state of the two systems is considered, and the weight coefficients are multiplied, such as engine coefficient 0.9 and motor coefficient 1.0, then the target control power is 70W x 0.9 + 60W x 1.0 = 123W, which is the basis for controlling the motor to work and output, and can be further converted into a target speed for controlling the oil pump speed.

[0027] Through the implementation of step 103, the single-motor-driven double-oil-pump system meets the double-cavity lubrication requirements without increasing additional energy consumption, effectively balancing lubrication performance and vehicle energy efficiency.

[0028] In step 104, a speed control instruction is sent to the motor driving the double electronic oil pump based on the target control power. In some examples, the speed control instruction is a control command sent to the motor driving the double electronic oil pump, which is used to adjust the rotation speed of the motor to match its output power with the target control power calculated in the previous step. The speed control instruction can be implemented through a motor controller such as an inverter, and can be in the form of a PWM signal, current / voltage setting, or CAN bus control instruction, for precise control of motor speed. The target control power value can be converted to a corresponding target speed value, and combined with the current speed of the motor to generate an adjustment signal using, for example, a PID regulation algorithm, and finally send a specific speed adjustment instruction to the motor controller to ensure that the flow output of the oil pump dynamically matches the lubrication requirements. For example, according to the target control power of 120W, the target speed is determined to be 3000rpm, and the current actual speed of the motor is detected to be 2500rpm. Then, the speed error (500rpm) is calculated using the PID control algorithm, and a control electrical signal is output to the inverter or motor drive module to adjust the voltage / frequency. The motor responds to the control signal to adjust to the target speed, driving the double pump to provide an appropriate amount of lubricating oil.

[0029] Through the implementation of step 104, energy waste or insufficient lubrication caused by traditional fixed-speed oil pumps can be avoided, further improving the economy, response speed, and operating stability of the lubrication system, and adapting to the demand for efficient operation in multiple working conditions.

[0030] In summary, the embodiment of the present application can reduce the volume and the number of parts of the lubrication system of the vehicle by integrating the engine oil cavity and the electric drive system oil cavity into the oil pan structure. Compared with the traditional separately arranged oil pan design, the integrated structure is beneficial to improve the engine compartment layout efficiency, reduce the weight of the vehicle, and achieve higher vehicle system integration and lightweight goals. The double electronic oil pump driven by a single motor can avoid the problem of independent control of multiple motors, reduce the complexity of the control system and the risk of failure, simplify the production and manufacturing process, and improve the economy and reliability of the vehicle. According to the current driving mode of the vehicle, the actual lubrication power demand of the engine system and the electric drive system is determined respectively, and the target control power of the oil pump motor is calculated accordingly, so as to realize dynamic speed regulation and accurate lubrication supply. Based on the real-time control strategy of the working condition, the situation of excessive lubrication and insufficient lubrication can be avoided, and the operation efficiency of the engine system and the electric drive system can be improved. By real-time identification of the lubrication power demand of the engine and the electric drive system and dynamic adjustment of the oil pump control parameters, the lubrication safety of the vehicle in different driving modes can be ensured, and the temperature adaptability and fault redundancy capability are good, which can effectively improve the long-term stability of the lubrication system and the service life of the vehicle. In summary, the oil pump control method of the hybrid vehicle provided by the embodiment of the present application realizes the structure simplification, cost reduction, and efficient and reliable multi-working-condition lubrication management by the integrated oil pan and double electronic oil pump design, combined with the intelligent lubrication control strategy based on the driving mode, which can improve the performance and stability of the vehicle.

[0031] In some embodiments, the foregoing step 102 can include: obtaining a preset lubrication demand mapping relationship corresponding to a driving mode, wherein the driving mode is any one of a pure electric driving mode, a parallel driving mode, a series driving mode, an engine direct drive mode, and a parking power generation mode; determining an engine lubrication demand power and a motor lubrication demand power from the preset lubrication demand mapping relationship according to oil temperature information and speed information of the target vehicle.

[0032] In some examples, the preset lubrication demand mapping relationship is a corresponding relationship between the power demand of the engine and the motor to the lubrication system under different driving modes, different oil temperatures and system speed conditions, which can be stored in the form of a table, a function or a multi-dimensional lookup table. Pure electric driving mode is that only the motor drives the target vehicle, the engine does not work, the engine lubrication demand is zero, and only the electric driving system lubrication needs to be met; parallel driving mode is that the engine and the motor jointly drive the target vehicle, and both the engine and the motor have lubrication demand; series driving mode is that the engine mainly generates electricity, the motor drives the target vehicle, the engine is in the state of generating electricity, the motor is in the state of high load, and both systems need to be lubricated; engine direct drive mode is that the engine directly drives the vehicle, the motor is auxiliary or in standby state, and the engine lubrication demand is high; and stationary power generation mode is that the vehicle is stationary but the engine drives the motor to generate electricity, the electric driving part is in no load operation, and the motor lubrication demand is zero. The oil temperature information is the current temperature information of the oil in the vehicle lubrication system, which can include the oil temperature in the engine oil cavity and the electric driving oil cavity, and can be collected in real time by a temperature sensor such as a thermocouple or a thermistor arranged in the oil cavity; for example, the engine oil cavity oil temperature is 85°C, and the electric driving oil cavity oil temperature is 75°C. The speed information is the current engine speed and motor speed, which reflects the real-time running state of the vehicle, and can be measured in real time by means of a speed sensor such as a Hall effect sensor or an optical encoder in the engine or the motor; for example, the current engine speed is 1800 rpm, and the motor speed is 3000 rpm.

[0033] For example, when the target vehicle is in pure electric driving mode, when the electric driving oil cavity temperature is 75°C and the motor speed is 3000 rpm, the motor lubrication demand power is 60W and the engine lubrication demand power is fixed at 0W according to the mapping table.

[0034] Through the implementation of the above examples, the mapping relationship between the driving mode and the lubrication power demand is established, the corresponding lubrication demand can be quickly and accurately identified in complex working conditions, and this mapping and inference mechanism based on working conditions, oil temperature and speed data not only can improve the response speed, but also can reduce the calculation burden, which is conducive to realizing the feedforward optimization of the control strategy and ensuring that the lubrication supply accurately covers the real-time working state of the engine and the electric driving system.

[0035] In some embodiments, the foregoing determining the engine lubrication demand power and the motor lubrication demand power from the preset lubrication demand mapping relationship according to the oil temperature information and the rotating speed information of the target vehicle can include: when the driving mode is the pure electric driving mode, determining the engine lubrication demand power and the motor lubrication demand power from the first lubrication demand mapping relationship according to the oil temperature information and the rotating speed information of the target vehicle, wherein the first lubrication demand mapping relationship sets the engine lubrication demand power as a constant zero value and sets the motor lubrication demand power based on the temperature value of the electric driving oil cavity and the motor rotating speed; when the driving mode is the engine direct drive mode, determining the engine lubrication demand power and the motor lubrication demand power from the second lubrication demand mapping relationship according to the oil temperature information and the rotating speed information of the target vehicle, wherein the second lubrication demand mapping relationship sets the engine lubrication demand power to be positively correlated with the engine power and sets the motor lubrication demand power as a constant safety power threshold.

[0036] In some examples, the first lubrication demand mapping relationship is a lubrication power distribution strategy dedicated to the pure electric driving mode, mainly considering the motor working state and not considering the engine; in the pure electric driving mode, the engine is in a shutdown or standby state and does not need to be lubricated, so it is set as a constant 0; high-speed rotation of the motor can cause the electric driving system to heat up, and the lubrication efficiency decreases when the oil temperature rises, so the pump power needs to be increased to ensure the flow and cooling capacity. The temperature value of the electric driving oil cavity is the current temperature of the lubricating oil of the motor and its driving components, which is the basis for judging the lubrication viscosity and cooling performance. The motor rotating speed refers to the rotating speed of the motor rotor, which can be obtained by an encoder, a Hall element or an inverter feedback control system. The second lubrication demand mapping relationship is a lubrication power distribution strategy dedicated to the engine direct drive mode, at this time the engine drives the whole vehicle, and the motor can not work or only assist at low speed. The engine lubrication demand power is positively correlated with the engine power, that is, the higher the engine load, the more intense the friction and heating, and the higher the requirement for the output power of the lubricating oil pump, so the pump speed needs to be improved. The motor lubrication demand power is a constant safety power threshold, that is, in order to prevent the motor gear set, electric driving bearing and the like from lacking lubrication due to inertial operation, a low constant power level also needs to be maintained; the constant safety power threshold is the lowest power output value preset for basic lubrication of the motor and its mechanical components, and the constant safety power threshold is based on the motor mechanical structure, oil path resistance and minimum cooling demand, etc. During the development stage, engineers set it through experiments and simulations, for example, 30W, 50W, etc.

[0037] For example, when the vehicle is in pure electric drive mode, the detected electric drive oil cavity temperature is 65°C, the motor speed is 3500 rpm, the motor lubrication power requirement is 140W, and the engine lubrication power is 0W, which are obtained from the first lubrication requirement mapping table. The control unit only adjusts the output power of the double electronic oil pump according to the motor requirement. When the driving mode is switched to engine direct drive mode, the current engine output power is 45kW, the corresponding engine lubrication requirement power is 180W, the motor does not participate in driving, but still provides a safety power threshold (such as 50W) for it, and the total target output power of the oil pump is determined as 230W to ensure that the engine and electric drive assembly are properly lubricated.

[0038] Through the implementation of the above embodiments, different lubrication requirement judgment strategies are set for different driving modes, and the lubrication control logic is optimized through scenario-based strategies, which can avoid unnecessary energy consumption and ensure system safety and lubrication integrity.

[0039] In some embodiments, the aforementioned determining the engine lubrication requirement power and the motor lubrication requirement power from the preset lubrication requirement mapping relationship according to the oil temperature information and the speed information of the target vehicle can further include: when the driving mode is parallel drive mode or series drive mode, determining the engine lubrication requirement power and the motor lubrication requirement power from a third lubrication requirement mapping relationship according to the oil temperature information and the speed information of the target vehicle, wherein the third lubrication requirement mapping relationship sets the engine lubrication requirement power positively correlated with the engine speed, and sets the motor lubrication requirement power positively correlated with the motor speed.

[0040] In some examples, the third lubrication requirement mapping relationship is a logical rule or data model for determining the engine and motor lubrication requirement power in parallel drive mode or series drive mode; in parallel mode, the engine and motor jointly drive the vehicle, and the lubrication requirement increases with the load of both; in series mode, the engine drives the generator to supply power, and the motor drives the vehicle, both of which are usually in working state at the same time; the higher the engine speed, the greater the internal friction, heat and mechanical load, and the greater the requirement for the supply amount and pressure of the lubricating oil, so the engine lubrication requirement power should increase with the increase of the engine speed; when the motor runs at high speed, it will also cause the electric drive bearings, gears and other components to heat or wear, so the lubrication strength needs to be improved, so the motor lubrication power should rise linearly or nonlinearly according to the motor speed. The engine speed refers to the number of revolutions per minute of the engine crankshaft, which can be read in real time by a crankshaft position sensor or an engine control unit; the motor speed refers to the rotation speed of the motor rotor, which can be obtained by an encoder, a Hall element or an inverter feedback control system.

[0041] For example, when the target vehicle is in the parallel driving mode, the engine speed is detected as 3000 rpm and the motor speed is detected as 2500 rpm, the engine lubrication demand is 120 W and the motor lubrication demand is 110 W are obtained by looking up the third lubrication demand mapping relationship; the target output power of the oil pump is calculated accordingly, and the motor speed is adjusted to meet the simultaneous lubrication of the double cavities; if the mode is switched to the series driving mode, the motor drives the vehicle and the engine drives the generator, the lubrication demand dynamically changes, and the lubrication supply under various working conditions can be matched in real time to ensure the reliability and thermal stability of the vehicle.

[0042] Through the implementation of the above embodiments, in the hybrid driving situation, the engine and the motor may simultaneously participate in driving, the lubrication power functions are established by taking the engine speed and the motor speed as the main variables respectively, the real-time dynamic collaborative matching of the lubrication demands of the two systems is realized, the complex load switching situation can be fully adapted, the entire driving system can be ensured to be in a high-efficiency lubrication state at all times, and the comprehensive performance and stability of the power system are improved.

[0043] In some embodiments, the foregoing determining the engine lubrication demand power and the motor lubrication demand power from the preset lubrication demand mapping relationship according to the oil temperature information and the speed information of the target vehicle can further include: when the driving mode is the parking power generation mode, determining the engine lubrication demand power and the motor lubrication demand power from a fourth lubrication demand mapping relationship according to the oil temperature information and the speed information of the target vehicle, wherein the fourth lubrication demand mapping relationship is set to have a positive correlation between the engine lubrication demand power and the generator power, and is set to have a constant value of 0 for the motor lubrication demand power.

[0044] In some examples, the fourth lubrication demand mapping relationship is a preset relationship rule used to derive the engine lubrication demand power from the generator power, the engine operating state and other parameters in the parking power generation mode, and simultaneously stipulates that the motor does not need to be lubricated, i.e., the lubrication power is constant at 0. The higher the generator load is, the greater the output power that needs to be provided by the engine is, and correspondingly, the internal thermal load and friction load of the engine increase, and the demand for lubrication also increases accordingly; for example, the higher the power generation power is, the more intense the operation of components such as the crankshaft, the piston and the camshaft is, and higher requirements are put forward for the motor lubrication system. In the parking power generation mode, the motor does not participate in driving or energy conversion, and is in an idle or shutdown state, and does not need to be supplied with oil, and therefore, setting the lubrication demand of the motor to 0 can effectively save energy and avoid unnecessary system burden. The generator power refers to the real-time electric power output value provided by the engine to the battery or the load through the generator connected thereto, and the unit is watt (W) or kilowatt (kW).

[0045] Exemplarily, in the stationary power generation mode, the current generator power is read as 5 kW, the engine lubrication demand power is determined as 110 W by looking up the fourth lubrication demand mapping table, and the motor lubrication power is set as 0 according to the mode setting; then, the vehicle control unit calculates the required total target control power according to this and adjusts the electronic oil pump motor speed to accurately deliver the lubricating oil to the engine oil cavity, realizing cooling and lubrication guarantee and ensuring the stable operation of the engine under high power generation load; in the whole process, the lubricating resources are not wasted in the non-working motor cavity, and the system energy efficiency and control accuracy are improved.

[0046] Through the implementation of the above embodiments, the stationary power generation is used as a static operation mode, the engine works and the electric drive is in an idle state, the motor lubrication power is set as zero in this mode, and the engine lubrication is associated with the power generation load, which can avoid resource waste and ensure the power generation efficiency, is suitable for the specific stationary power generation scene of the hybrid vehicle, is helpful to prolong the service life of the electric drive system and optimize the engine efficiency.

[0047] In some embodiments, the foregoing step 103 can include: multiplying the engine lubrication demand power by a first dynamic weight coefficient to obtain a first weight correction value, wherein the first dynamic weight coefficient is determined according to the real-time thermal load state of the engine oil cavity; multiplying the motor lubrication demand power by a second dynamic weight coefficient to obtain a second weight correction value, wherein the second dynamic weight coefficient is determined according to the real-time thermal load state of the electric drive oil cavity, and the first dynamic weight coefficient and the second dynamic weight coefficient are both less than or equal to 1; and adding the first weight correction value and the second weight correction value to obtain the target control power.

[0048] In some examples, the first dynamic weight coefficient is a real-time adjusted proportion coefficient for correcting the engine lubrication demand power, reflecting the influence of the real-time thermal load state of the engine oil cavity on the lubrication demand, the real-time thermal load state of the engine oil cavity being the current thermal load state of the engine oil cavity, which can be calculated based on the oil temperature, pressure and engine operating conditions (speed, load, etc.), and can be monitored in real time through the oil temperature sensor and oil pressure sensor installed in the engine oil cavity, combined with the engine speed, torque and other signals, and the thermal load state index is calculated by the control unit; the first dynamic weight coefficient can adjust the lubrication power according to the temperature, pressure and other thermal load indexes of the engine oil cavity, to ensure that the lubrication system is not over-supplied or under-supplied, thereby optimizing energy consumption and lubrication effect; the first dynamic weight coefficient can be calculated by an algorithm based on real-time data from the temperature sensor, pressure sensor and other sensors installed in the engine oil cavity. The first weight correction value is the adjustment result of the engine lubrication demand power multiplied by the first dynamic weight coefficient, representing the actual engine lubrication power required under the current thermal load state; for example, if the engine lubrication demand power is 100W and the first dynamic weight coefficient is 0.8, the first weight correction value is 80W. The second dynamic weight coefficient is similar to the first dynamic weight coefficient, but is for the electric drive system oil cavity, reflecting the adjustment proportion of the real-time thermal load state of the electric drive oil cavity on the lubrication demand; the real-time thermal load state of the electric drive oil cavity represents the current thermal load state of the electric drive system oil cavity, which takes into account the oil temperature, pressure and motor operating conditions (speed, load, etc.), and can be calculated by a controller algorithm using the temperature sensor and pressure sensor inside the electric drive oil cavity, combined with the speed and torque information output by the motor controller; the second weight correction value is the result of the motor lubrication demand power multiplied by the second dynamic weight coefficient, representing the actual lubrication demand power under the current thermal load state of the electric drive oil cavity; for example, if the motor lubrication demand power is 80W and the second dynamic weight coefficient is 0.7, the second weight correction value is 56W.

[0049] For example, the temperature and pressure data in the engine oil cavity and the electric drive oil cavity can be collected first, combined with the speed and load information of the engine and the motor, and the respective thermal load states can be calculated in real time; then, the first dynamic weight coefficient and the second dynamic weight coefficient can be calculated to reflect the dynamic changes in the current lubrication demand; by multiplying the respective lubrication demand power by the corresponding weight coefficient, two weighted correction values can be obtained; finally, the two values are added to form the target control power of the dual-connection electric oil pump. The target power will guide the speed regulation of the oil pump to achieve on-demand oil supply, ensuring lubrication performance and avoiding energy waste, thereby improving vehicle energy efficiency and system reliability.

[0050] Since the thermal load state of different oil chambers has a significant impact on the lubrication demand, by implementing the above embodiments, a dynamic weight coefficient is introduced, the lubrication power is corrected according to the thermal load condition, more detailed and actual lubrication control can be realized, over-supply of oil at low thermal load is avoided, the energy saving of the lubrication system is improved, the lubrication safety under high temperature load is guaranteed, and the intelligent level of the entire oil pump control system is enhanced.

[0051] In some embodiments, the foregoing step 104 can include: determining a target speed value corresponding to the target control power according to a preset power-speed mapping relationship; generating a speed PID adjustment signal based on a difference between the target speed value and the current actual speed; and performing a driving operation on the inverter of the motor through the speed PID adjustment signal.

[0052] In some examples, the preset power-speed mapping relationship is a function or lookup table established in advance through experiments, simulations or theoretical analysis, which is used to map the target control power required by the duplex electronic oil pump to the corresponding motor speed value; the preset power-speed mapping relationship is used to convert the calculated target power into a specific motor speed instruction, ensuring that the oil pump can operate at an appropriate speed to meet the lubrication demand; for example, when the target power is 50 watts, the mapping relationship may correspond to a motor speed of 3000 revolutions per minute; when the power is 100 watts, it corresponds to 4500 revolutions per minute. The target speed value is the speed that the current oil pump motor should reach according to the preset power-speed mapping relationship, and the target speed value can provide a clear speed target for motor control, ensuring that the lubrication oil pump adjusts the flow and pressure according to the power demand; for example, if the target control power is 80 watts, the target speed is 3800 revolutions per minute through the preset power-speed mapping relationship, then 3800 revolutions per minute is the target speed value. The current actual speed is the current speed value of the oil pump motor monitored in real time, which can be measured by a speed sensor installed on the motor. The speed PID adjustment signal is a control signal calculated by the PID controller based on the difference between the target speed value and the current actual speed, which is used to adjust the motor driving current or voltage; the speed PID adjustment signal can be used to realize closed-loop feedback control, quickly and stably adjust the motor speed, reduce errors, and ensure that the motor speed approaches the target speed; for example, if the target speed is 3800 revolutions and the actual speed is 3600 revolutions, the error is 200 revolutions, and the PID calculates the adjustment signal to adjust the driving voltage to increase, so that the speed is increased. The PID control signal can be used to adjust the voltage and frequency of the inverter output to the motor, to realize accurate control of the motor speed; the inverter as a motor driving unit can change the power supply parameters according to the control signal, so as to adjust the motor speed.

[0053] For example, first, according to the currently calculated target control power, the target speed value is obtained by looking up the preset power-speed mapping relationship; then, the actual speed of the oil pump motor is measured in real time, and the error between the target speed and the actual speed is calculated by comparing the target speed with the actual speed; based on the error, the speed PID controller generates a corresponding adjustment signal for adjusting the output voltage and frequency of the inverter to accurately control the motor speed. In this way, dynamic adjustment of the oil pump speed is achieved, meeting different lubrication needs, ensuring system performance, and effectively saving energy and reducing emissions.

[0054] Through the implementation of the above embodiments, the power-speed mapping relationship and PID adjustment control are used to realize dynamic adjustment of the motor speed, which can have the advantages of fast response, error self-adaptation, control stability, etc., ensuring the flow output accuracy of the lubrication system under different speeds and loads, and further improving the overall performance and reliability of the control system.

[0055] Further, as an implementation of the foregoing method embodiment, the application also provides a hybrid vehicle oil pump control device for implementing the foregoing method embodiment. The device embodiment corresponds to the foregoing method embodiment, and for the sake of readability, the details of the foregoing method embodiment will not be described one by one, but it should be clear that the device in the application embodiment can correspondingly implement all the contents in the foregoing method embodiment. As shown in the Figure 2 As shown in the foregoing method embodiment, the hybrid vehicle oil pump control device 20 is applied to a target vehicle provided with an integrated oil pan and a double electronic oil pump, the integrated oil pan includes an engine oil cavity and an electric drive oil cavity which are physically isolated from each other, and the double electronic oil pump includes independent oil pumps belonging to the engine oil cavity and the electric drive oil cavity respectively and driven by a single motor. The hybrid vehicle oil pump control device 20 can include: a mode acquisition unit 201, a mode power mapping unit 202, a power determination unit 203, and a speed control unit 204, wherein the mode acquisition unit 201 is configured to acquire the driving mode of the target vehicle; the mode power mapping unit 202 is configured to determine the engine lubrication demand power and the motor lubrication demand power based on the driving mode, wherein the engine lubrication demand power is the lubrication demand power of the engine system of the target vehicle, and the motor lubrication demand power is the lubrication demand power of the electric drive system of the target vehicle; the power determination unit 203 is configured to determine the target control power of the double electronic oil pump according to the engine lubrication demand power and the motor lubrication demand power; and the speed control unit 204 is configured to send a speed control instruction to the motor driving the double electronic oil pump based on the target control power.

[0056] In some embodiments, the mode power mapping unit 202 is further configured to obtain a preset lubrication demand mapping relationship corresponding to the driving mode, wherein the driving mode is any one of the pure electric driving mode, the parallel driving mode, the series driving mode, the engine direct driving mode and the parking power generation mode; and determine the engine lubrication demand power and the motor lubrication demand power from the preset lubrication demand mapping relationship according to the oil temperature information and the speed information of the target vehicle.

[0057] In some embodiments, the mode power mapping unit 202 is further configured to, when the driving mode is the pure electric driving mode, determine the engine lubrication demand power and the motor lubrication demand power from the first lubrication demand mapping relationship according to the oil temperature information and the speed information of the target vehicle, wherein the first lubrication demand mapping relationship sets the engine lubrication demand power as a constant zero value and sets the motor lubrication demand power based on the temperature value of the electric driving oil cavity and the motor speed; and when the driving mode is the engine direct driving mode, determine the engine lubrication demand power and the motor lubrication demand power from the second lubrication demand mapping relationship according to the oil temperature information and the speed information of the target vehicle, wherein the second lubrication demand mapping relationship sets the engine lubrication demand power to be positively correlated with the engine power and sets the motor lubrication demand power as a constant fixed safety power threshold.

[0058] In some embodiments, the mode power mapping unit 202 is further configured to, when the driving mode is the parallel driving mode or the series driving mode, determine the engine lubrication demand power and the motor lubrication demand power from the third lubrication demand mapping relationship according to the oil temperature information and the speed information of the target vehicle, wherein the third lubrication demand mapping relationship sets the engine lubrication demand power to be positively correlated with the engine speed and sets the motor lubrication demand power to be positively correlated with the motor speed.

[0059] In some embodiments, the mode power mapping unit 202 is further configured to, when the driving mode is the parking power generation mode, determine the engine lubrication demand power and the motor lubrication demand power from the fourth lubrication demand mapping relationship according to the oil temperature information and the speed information of the target vehicle, wherein the fourth lubrication demand mapping relationship sets the engine lubrication demand power to be positively correlated with the generator power and sets the motor lubrication demand power as a constant zero value.

[0060] In some embodiments, the power determination unit 203 is further configured to multiply the engine lubrication demand power by a first dynamic weight coefficient to obtain a first weight correction value, wherein the first dynamic weight coefficient is determined according to a real-time thermal load state of the engine oil cavity; multiply the motor lubrication demand power by a second dynamic weight coefficient to obtain a second weight correction value, wherein the second dynamic weight coefficient is determined according to a real-time thermal load state of the electric driving oil cavity, and the first dynamic weight coefficient and the second dynamic weight coefficient are both less than or equal to 1; and add the first weight correction value and the second weight correction value to obtain the target control power.

[0061] In some embodiments, the rotation speed control unit 204 is further configured to determine a target rotation speed value corresponding to the target control power according to a preset power-rotation speed mapping relationship, generate a rotation speed PID adjustment signal based on a difference between the target rotation speed value and the current actual rotation speed, and perform a driving operation on an inverter of the motor through the rotation speed PID adjustment signal.

[0062] The application further provides a computer readable storage medium, which stores computer executable instructions or computer programs. When the computer executable instructions or computer programs are executed by a processor, the processor will execute any step of the hybrid vehicle oil pump control method provided by the application.

[0063] In some embodiments, the computer readable storage medium can be a random access memory (RAM), a read-only memory (ROM), a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM), etc. The computer readable storage medium can also be various devices including one or any combination of the above storage mediums.

[0064] In some embodiments, the computer executable instructions can be in the form of programs, software, software modules, scripts or codes, written in any form of programming language (including compiled or interpreted languages, or declarative or procedural languages), and can be deployed in any form, including being deployed as independent programs or as modules, components, subroutines or other units suitable for use in a computing environment.

[0065] In some embodiments, the computer executable instructions can but not necessarily correspond to files in a file system, can be stored in a part of a file storing other programs or data, for example, in one or more scripts in a HyperText Markup Language (HTML) document, in a single file dedicated to the program in question, or in multiple cooperative files (for example, files storing one or more modules, subroutines or code portions).

[0066] In some embodiments, the computer executable instructions can be deployed to execute on one electronic device, or on multiple electronic devices located in one place, or on multiple electronic devices distributed in multiple places and interconnected through a communication network.

[0067] As Figure 3As shown, the application further provides an electronic device 30, comprising a memory 310, a processor 320, and a computer program 311 stored in the memory 310 and executable on the processor, wherein the processor 320 implements any step of the hybrid vehicle oil pump control method described above when executing the computer program 311.

[0068] The application further provides a computer program product, comprising a computer program or computer executable instructions stored in a computer readable storage medium. The processor of the electronic device reads the computer program or computer executable instructions from the computer readable storage medium, and the processor executes the computer program or computer executable instructions, so that the electronic device executes any step of the hybrid vehicle oil pump control method described above.

[0069] The above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part 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 application.

Claims

1. A method for controlling a fuel pump in a hybrid vehicle, characterized in that, The method is applied to target vehicles equipped with an integrated oil pan and dual electronic oil pumps. The integrated oil pan includes an engine oil chamber and an electrically driven oil chamber that are physically isolated from each other. The dual electronic oil pumps include independent oil pumps driven by a single motor, each belonging to one of the engine oil chambers and the other to the other. The hybrid vehicle oil pump control method includes: Obtain the driving mode of the target vehicle; Based on the driving mode, the engine lubrication power requirement and the motor lubrication power requirement are determined, wherein the engine lubrication power requirement is the lubrication power requirement of the engine system of the target vehicle, and the motor lubrication power requirement is the lubrication power requirement of the electric drive system of the target vehicle. The target control power of the dual electronic oil pump is determined based on the engine lubrication power requirement and the motor lubrication power requirement. Based on the target control power, a speed control command is sent to the motor driving the dual electronic oil pump.

2. The hybrid vehicle oil pump control method according to claim 1, characterized in that, The determination of engine lubrication power requirement and electric motor lubrication power requirement based on the driving mode includes: Obtain a preset lubrication requirement mapping relationship corresponding to the driving mode, wherein the driving mode is any one of pure electric drive mode, parallel drive mode, series drive mode, engine direct drive mode and parking generator mode; Based on the target vehicle's oil temperature and speed information, the engine lubrication power requirement and the motor lubrication power requirement are determined from the preset lubrication demand mapping relationship.

3. The hybrid vehicle oil pump control method according to claim 2, characterized in that, The step of determining the engine lubrication demand power and the electric motor lubrication demand power from the preset lubrication demand mapping relationship based on the target vehicle's oil temperature and speed information includes: When the driving mode is the pure electric drive mode, the engine lubrication demand power and the motor lubrication demand power are determined from the first lubrication demand mapping relationship based on the oil temperature information and speed information of the target vehicle. The first lubrication demand mapping relationship sets the engine lubrication demand power to be always zero and sets the motor lubrication demand power to be determined based on the temperature value of the electric drive oil chamber and the motor speed. When the driving mode is the engine direct drive mode, the engine lubrication demand power and the motor lubrication demand power are determined from the second lubrication demand mapping relationship based on the oil temperature information and speed information of the target vehicle. The second lubrication demand mapping relationship sets the engine lubrication demand power to be positively correlated with the engine power, and sets the motor lubrication demand power to be a fixed safe power threshold.

4. The hybrid vehicle oil pump control method according to claim 3, characterized in that, The step of determining the engine lubrication demand power and the electric motor lubrication demand power from the preset lubrication demand mapping relationship based on the target vehicle's oil temperature information and speed information further includes: When the driving mode is the parallel drive mode or the series drive mode, the engine lubrication demand power and the motor lubrication demand power are determined from the third lubrication demand mapping relationship based on the oil temperature information and speed information of the target vehicle. The third lubrication demand mapping relationship sets the engine lubrication demand power to be positively correlated with the engine speed and sets the motor lubrication demand power to be always positively correlated with the motor speed.

5. The hybrid vehicle oil pump control method according to claim 4, characterized in that, The step of determining the engine lubrication demand power and the electric motor lubrication demand power from the preset lubrication demand mapping relationship based on the target vehicle's oil temperature information and speed information further includes: When the driving mode is the parking power generation mode, the engine lubrication demand power and the motor lubrication demand power are determined from the fourth lubrication demand mapping relationship based on the oil temperature information and speed information of the target vehicle. The fourth lubrication demand mapping relationship sets the engine lubrication demand power to be positively correlated with the generator power and sets the motor lubrication demand power to be always zero.

6. The hybrid vehicle oil pump control method according to claim 1, characterized in that, Determining the target control power of the dual electronic oil pump based on the engine lubrication power requirement and the motor lubrication power requirement includes: The engine lubrication demand power is multiplied by a first dynamic weighting coefficient to obtain a first weighting correction value, wherein the first dynamic weighting coefficient is determined based on the real-time thermal load state of the engine oil chamber. The second weight correction value is obtained by multiplying the motor lubrication demand power by the second dynamic weight coefficient, wherein the second dynamic weight coefficient is determined according to the real-time thermal load state of the electric drive oil chamber, and both the first dynamic weight coefficient and the second dynamic weight coefficient are less than or equal to 1. The target control power is obtained by summing the first weight correction value and the second weight correction value.

7. The hybrid vehicle oil pump control method according to claim 1, characterized in that, The step of sending a speed control command to the motor driving the dual electronic oil pump based on the target control power includes: Based on the preset power-speed mapping relationship, determine the target speed value corresponding to the target control power; Based on the difference between the target speed value and the current actual speed, a speed PID adjustment signal is generated; The inverter of the motor is driven by the speed PID adjustment signal.

8. A hybrid vehicle fuel pump control device, characterized in that, Applied to target vehicles equipped with an integrated oil pan and dual electric oil pumps, the integrated oil pan comprising a physically isolated engine oil chamber and an electrically driven oil chamber, the dual electric oil pump comprising independent oil pumps driven by a single motor, each belonging to one of the engine oil chambers and the other to the other electric drive oil chamber, the hybrid vehicle oil pump control device comprising: A mode acquisition unit is used to acquire the driving mode of the target vehicle; A mode power mapping unit is used to determine the engine lubrication power requirement and the motor lubrication power requirement based on the driving mode, wherein the engine lubrication power requirement is the lubrication power requirement of the engine system of the target vehicle, and the motor lubrication power requirement is the lubrication power requirement of the electric drive system of the target vehicle. A power determination unit is used to determine the target control power of the dual electronic oil pump based on the engine lubrication demand power and the motor lubrication demand power. A speed control unit is used to send speed control commands to the motor driving the dual electronic oil pump based on the target control power.

9. An electronic device, comprising: The memory and processor are characterized in that the processor, when executing a computer program stored in the memory, implements the steps of the hybrid vehicle oil pump control method as described in any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the hybrid vehicle oil pump control method as described in any one of claims 1 to 7.

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