Electronic oil pump control method, device and medium

Abstract

The present disclosure relates to an electronic oil pump control method, device and medium, and belongs to the technical field of hybrid commercial vehicles. The method comprises: obtaining the operating state of a driving motor, wherein the operating state comprises a risk-free working condition, a high-risk working condition, an auxiliary heating demand working condition and an ordinary operating working condition; if the operating state is the risk-free working condition, controlling the electronic oil pump to operate at a basic operating speed under the current gearbox oil temperature; if the operating state is the high-risk working condition or the auxiliary heating demand working condition, controlling the electronic oil pump to operate at a maximum operating speed under the current gearbox oil temperature; and if the operating state is the ordinary operating working condition, calculating the electronic oil pump operating speed n according to the formula: n = 0.5 * (T1-T2) / (T1+T2) and controlling the electronic oil pump to operate at the electronic oil pump operating speed n. The technical means of the present disclosure provides cooling flow based on the operating state of the driving motor, and realizes cooling of the driving motor without wasting cooling flow.

Description

Technical Field

[0001] This disclosure relates to the field of hybrid commercial vehicle technology, and in particular to an electronic oil pump control method, device and medium. Background Technology

[0002] With increasingly stringent environmental protection and fuel consumption regulations, more vehicles are moving towards new energy sources, including commercial vehicles where diverse electric and hybrid powertrains are gradually replacing pure gasoline vehicles. This is especially true for urban logistics vehicles, which face both stricter environmental requirements and the availability of convenient charging facilities in cities, facilitating the promotion of electric and hybrid products.

[0003] like Figure 6 As shown, the transmission has two oil pumps: a mechanical oil pump driven by the engine and an electronic oil pump. When the vehicle is in a parking-to-generate or hybrid state, the engine can start, driving the mechanical oil pump to meet the cooling needs of the drive motor. In pure electric mode, the engine does not start, and the mechanical oil pump has no power source; therefore, the electronic oil pump must be activated to meet the cooling needs of the drive motor. Currently, the cooling flow is not based on the needs of the drive motor, resulting in wasted cooling flow. Summary of the Invention

[0004] This disclosure proposes an electronic oil pump control method, device, and medium to solve the aforementioned technical problems.

[0005] According to a first aspect of this disclosure, an electronic oil pump control method is provided, the method comprising: acquiring the operating state of a drive motor, wherein the operating state includes a risk-free operating condition, a high-risk operating condition, an auxiliary heating demand operating condition, and a normal operating condition; if the operating state is a risk-free operating condition, controlling the electronic oil pump to operate at the current transmission oil temperature. The basic operating speed Operation; if the operating state is a high-risk condition or an auxiliary heating requirement condition, control the electronic oil pump to operate at the current transmission oil temperature. Maximum operating speed Running; if the running state is a normal operating condition, according to the formula: The operating speed n of the electronic oil pump is calculated, and the electronic oil pump is controlled to operate at the electronic oil pump operating speed n, wherein, Indicates real-time transmission oil temperature The maximum speed of the electronic oil pump is below. Indicates the electronic oil pump speed and drive motor temperature Correction coefficients between Indicates the electronic oil pump speed and transmission oil temperature Correction coefficients between and Both indicate the target speed of the electronic oil pump.

[0006] In some embodiments, the method further includes: acquiring the drive motor torque T, the drive motor speed N, and the drive motor temperature. If it is detected that T≤T1, N≤N1, and ≤80℃, confirming the drive motor is operating under risk-free conditions; if it is detected that T>T2, N>N2, or If the drive motor is detected to be operating under high-risk conditions, or if the drive motor is detected to be operating under stall conditions or with reduced efficiency, the drive motor is detected to be operating under conditions requiring auxiliary heating.

[0007] In some embodiments, for The calculation includes: if it is detected that T≤T1, then Where T represents the torque of the drive motor; if it is detected that T > T2, then If it is detected that T1 < T ≤ T2, then .

[0008] In some embodiments, for The calculation includes: if it is detected that N≤N1, then Where N represents the speed of the drive motor; if it is detected that N > N2, then If it is detected that N1 < N ≤ N2, then .

[0009] In some embodiments, for Perform calculations, including: if detected, ,but ,in, Indicates the temperature of the drive motor; if detected, ,but If detected, ,but .

[0010] In some embodiments, for Perform calculations, including: if detected, ,but ,in, Indicates the transmission fluid temperature; if detected, ,but If detected, ,but .

[0011] According to a second aspect of this disclosure, an electronic oil pump control device is provided, comprising: an operating status acquisition module for acquiring the operating status of a drive motor, wherein the operating status includes a risk-free operating condition, a high-risk operating condition, an auxiliary heating demand operating condition, and a normal operating condition; and a first electronic oil pump control module for controlling the electronic oil pump to operate at the current transmission oil temperature if the operating status is a risk-free operating condition. The basic operating speed The second electronic oil pump control module is used to control the electronic oil pump to operate at the current transmission oil temperature if the operating state is a high-risk condition or an auxiliary heating requirement condition. Maximum operating speed Operation; the third electronic oil pump control module, used to, if the operating state is a normal operating condition, according to the formula: The operating speed n of the electronic oil pump is calculated, and the electronic oil pump is controlled to operate at the electronic oil pump operating speed n, wherein, Indicates real-time transmission oil temperature The maximum speed of the electronic oil pump is below. Indicates the electronic oil pump speed and drive motor temperature Correction coefficients between Indicates the electronic oil pump speed and transmission oil temperature Correction coefficients between and Both indicate the target speed of the electronic oil pump.

[0012] According to a third aspect of this disclosure, an electronic oil pump control device is provided, comprising: a memory; and a processor coupled to the memory, the processor being configured to execute the electronic oil pump control method as described above based on instructions stored in the memory.

[0013] According to a fourth aspect of this disclosure, a computer-storeable medium is provided having computer program instructions stored thereon, which, when executed by a processor, implement the electronic oil pump control method as described above.

[0014] The beneficial effects of this disclosure are:

[0015] (1) Based on the identification of the operating status of the drive motor, namely, risk-free operating condition, normal operating condition, high-risk operating condition and the condition where the whole vehicle has auxiliary heating requirements, the electronic oil pump is controlled to operate at different speeds.

[0016] (2) Under risk-free operating conditions, control the electronic oil pump to operate at the basic operating speed to ensure the lowest system energy consumption.

[0017] (3) Under high-risk conditions, the electronic oil pump is controlled to run at the highest operating speed at the current oil temperature. On the one hand, the electronic oil pump is controlled to operate safely, and on the other hand, the heat generated by the drive motor can be removed as soon as possible.

[0018] (4) When auxiliary heating is required, the electronic oil pump is controlled to run at the highest operating speed at the current oil temperature, which can quickly exchange the heat generated by the drive motor with other thermal management systems (battery or crew compartment), improve the temperature of other systems, and improve the performance of other systems.

[0019] (5) Under normal operating conditions, the operation of the electronic oil pump is controlled based on the drive motor speed, drive motor torque, drive motor temperature and gearbox oil temperature.

[0020] As described above, the technical means disclosed herein provide cooling flow based on the operating state of the drive motor, thereby achieving cooling of the drive motor without wasting cooling flow. Attached Figure Description

[0021] The accompanying drawings, which form part of this specification, illustrate embodiments of this disclosure and, together with the specification, serve to explain the principles of this disclosure.

[0022] This disclosure can be more clearly understood with reference to the accompanying drawings and the following detailed description.

[0023] Figure 1 This is a flowchart illustrating an electronic oil pump control method according to some embodiments of the present disclosure.

[0024] Figure 2 This illustrates the target rotational speed of an electronic oil pump according to some embodiments of the present disclosure. A schematic diagram illustrating the relationship between the torque of the drive motor and the torque of the drive motor.

[0025] Figure 3 This illustrates the target rotational speed of an electronic oil pump according to some embodiments of the present disclosure. A schematic diagram showing the relationship between the speed of the motor and the speed of the drive motor.

[0026] Figure 4 This illustrates the electronic oil pump speed correction factor according to some embodiments of the present disclosure. A schematic diagram showing the relationship between the curve and the drive motor.

[0027] Figure 5 This illustrates the electronic oil pump speed correction factor according to some embodiments of the present disclosure. A schematic diagram showing the relationship between oil temperature and temperature.

[0028] Figure 6 This is a schematic diagram of a typical dual-motor hybrid power transmission system in the background art.

[0029] Figure 7 This is a block diagram illustrating an electronic oil pump control device according to some embodiments of the present disclosure.

[0030] Figure 8 This is a block diagram illustrating an electronic oil pump control device according to other embodiments of the present disclosure.

[0031] Figure 9 This is a block diagram illustrating a computer system for implementing some embodiments of the present disclosure. Detailed Implementation

[0032] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0033] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.

[0034] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use.

[0035] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0036] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0038] Currently, with increasingly stringent environmental protection and fuel consumption regulations, more vehicles are moving towards new energy sources. This includes commercial vehicle powertrains, which are gradually replacing pure gasoline vehicles with diversified electric and hybrid products. This is especially true for urban logistics vehicles, which face both stricter environmental protection requirements and the convenience of urban charging infrastructure, facilitating the promotion of electric and hybrid products.

[0039] like Figure 6As shown, the transmission has two oil pumps: a mechanical oil pump driven by the engine and an electronic oil pump. When the vehicle is in a parking-to-generate or hybrid state, the engine can start, driving the mechanical oil pump to meet the cooling needs of the drive motor. In pure electric mode, the engine does not start, and the mechanical oil pump has no power source; therefore, the electronic oil pump must be activated to meet the cooling needs of the drive motor. Currently, the cooling flow is not based on the needs of the drive motor, resulting in wasted cooling flow.

[0040] In view of this, this disclosure proposes a method, device and medium for controlling an electronic oil pump, which can achieve the following beneficial effects: (1) Based on identifying the operating state of the drive motor, namely, risk-free operating condition, normal operating condition, high-risk operating condition and vehicle auxiliary heating requirement, the electronic oil pump is controlled to operate at different speeds. (2) Under risk-free operating conditions, the electronic oil pump is controlled to operate at the basic operating speed to ensure the lowest system energy consumption. (3) Under high-risk operating conditions, the electronic oil pump is controlled to operate at the highest operating speed at the current oil temperature, which on the one hand controls the safe operation of the electronic oil pump, and on the other hand can remove the heat generated by the drive motor as soon as possible. (4) Under auxiliary heating requirement conditions, the electronic oil pump is controlled to operate at the highest operating speed at the current oil temperature, which can quickly exchange the heat generated by the drive motor with other thermal management systems (battery or passenger compartment), improve the temperature of other systems and improve the performance of other systems. (5) Under normal operating conditions, the operation of the electronic oil pump is controlled based on the drive motor speed, drive motor torque, drive motor temperature and transmission oil temperature.

[0041] As described above, the technical means disclosed herein provide cooling flow based on the operating state of the drive motor, thereby achieving cooling of the drive motor without wasting cooling flow.

[0042] Figure 1 This is a flowchart illustrating an electronic oil pump control method according to some embodiments of the present disclosure. Figure 1 As shown, the electronic oil pump control method includes steps 110 to 140.

[0043] In step 110, the operating status of the drive motor is obtained, wherein the operating status includes risk-free operating condition, high-risk operating condition, auxiliary heating demand operating condition, and normal operating condition.

[0044] In step 120, if the operating state is a risk-free condition, the electronic oil pump is controlled to operate at the current transmission oil temperature. The basic operating speed run.

[0045] In step 130, if the operating state is a high-risk condition or an auxiliary heating requirement condition, the electronic oil pump is controlled to operate at the current transmission oil temperature. Maximum operating speed run.

[0046] In step 140, if the operating state is a normal operating condition, according to the formula: The operating speed n of the electronic oil pump is calculated, and the electronic oil pump is controlled to operate at the electronic oil pump operating speed n, wherein, Indicates real-time transmission oil temperature The maximum speed of the electronic oil pump is below. Indicates the electronic oil pump speed and drive motor temperature Correction coefficients between Indicates the electronic oil pump speed and transmission oil temperature Correction coefficients between and Both indicate the target speed of the electronic oil pump.

[0047] The operating speed of the electronic oil pump is related to the operating status of the drive motor. If the drive motor is in a risk-free operating condition, the electronic oil pump will operate at the current transmission oil temperature. The basic operating speed Operation. To determine whether a drive motor is in a risk-free operating condition, it must simultaneously meet the following conditions: drive motor torque T ≤ T1, drive motor speed N ≤ N1, and drive motor temperature... .

[0048] If the drive motor is in a high-risk operating condition or an auxiliary heating requirement, the electronic oil pump will operate at the current transmission oil temperature. Maximum operating speed Operation. Please note that the electronic oil pump operates at the current transmission's maximum operating speed. This depends on the inherent limitations of the electronic oil pump itself. To determine whether a drive motor is in a high-risk operating condition, it can be classified as such if one of the following conditions is met: drive motor torque T > T2, drive motor N > N2, and drive motor temperature... To determine whether a drive motor is in auxiliary heating mode, it can be determined that the drive motor is in auxiliary heating mode if it meets one of the following conditions: the drive motor is running in a stalled state, or the drive motor is running in a state with reduced efficiency.

[0049] If the motor is in normal operating condition, the electronic oil pump will be driven according to the current operating state of the gearbox to meet the motor cooling requirements.

[0050] Under normal operating conditions of the drive motor, the operating speed (n) of the electronic oil pump is related to the real-time drive motor torque (T), real-time drive motor speed (N), and real-time drive motor temperature (N). ) and real-time transmission oil temperature ( (Related to)

[0051] The following functional mapping relationship exists: from the target speed of the electronic oil pump With the target speed of the electronic oil pump Take the larger value, and then multiply it by the electronic oil pump correction factor. (Electronic oil pump speed and drive motor temperature) Correction factors between them) and correction factors for electronic oil pumps (Electronic oil pump speed and transmission oil temperature) The correction factor between the values ​​is calculated above and compared with the real-time transmission oil temperature. The maximum speed of the electronic oil pump under () The smaller value in () is taken as the operating speed of the electronic oil pump under normal operating conditions of the drive motor, that is: .

[0052] like Figure 2 As shown, this represents the target speed of the electronic oil pump. The curve showing the relationship between the motor torque and the torque T, when the motor torque... At that time, the target speed of the electronic oil pump When the motor torque At that time, the target speed of the electronic oil pump When T1 < motor torque T ≤ T2, the target speed of the electronic oil pump is... The following functional mapping relationship exists between the motor torque T and the torque T: .

[0053] like Figure 3 As shown, this represents the target speed of the electronic oil pump. The curve showing the relationship between the motor speed and the motor speed N, when the motor speed... At that time, the target speed of the electronic oil pump When the motor speed At that time, the target speed of the electronic oil pump When N1 < motor speed N ≤ N2, the target speed of the electronic oil pump is... The following functional mapping relationship exists between the motor speed N and the speed N: .

[0054] like Figure 4 As shown, there is a correction factor between the electric oil pump speed and the motor temperature. When the motor temperature When, then the correction coefficient is applied. When the motor temperature Then the correction factor When the motor temperature Electronic oil pump speed correction coefficient With motor temperature The following mapping relationship exists: .

[0055] like Figure 5 As shown, there is a correction factor between the electronic oil pump speed and the transmission fluid temperature. When the oil temperature When, then the correction coefficient is applied. When the oil temperature Then the correction factor When the oil temperature At that time, the correction factor for the electronic oil pump Transmission oil temperature The following mapping relationship exists: .

[0056] This disclosure ensures the safe, reliable, and efficient operation of commercial vehicle hybrid systems in pure electric mode. Embodiments of this disclosure provide cooling flow based on the motor's operating state, ensuring the motor's safe operation. This disclosure provides cooling flow according to the motor's needs, ensuring no flow waste and reducing the energy consumption of the electronic oil pump.

[0057] The beneficial effects achievable in the method of this disclosure embodiment are as follows: Based on identifying the operating state of the drive motor—risk-free operating condition, normal operating condition, high-risk operating condition, and vehicle auxiliary heating requirement—different electronic oil pump operating speeds are assigned based on the different operating states of the drive motor; under the risk-free operating condition of the drive motor, the electronic oil pump operates at the base operating speed, ensuring the lowest system energy consumption; under the high-risk operating condition of the drive motor, the electronic oil pump operates at the highest operating speed at the current oil temperature, ensuring safe operation of the electronic oil pump and quickly removing the heat generated by the motor, ensuring safe operation of the motor; under the auxiliary heating operating condition of the drive motor, the electronic oil pump operates at the highest operating speed at the current oil temperature, quickly exchanging heat generated by the drive motor with other thermal management systems (battery or passenger compartment), raising the temperature of other systems, and improving the performance of other systems; under the normal operating condition of the drive motor, the drive motor speed (N), drive motor torque (T), and drive motor temperature (… ) and transmission oil temperature ( The speed (n) of the electronic oil pump is calculated as a variable to achieve on-demand supply of the electronic oil pump.

[0058] Figure 7 This is a block diagram illustrating an electronic oil pump control device according to some embodiments of the present disclosure. Figure 7 As shown, the electronic oil pump control device 700 includes an operating status acquisition module 710, a first electronic oil pump control module 720, a second electronic oil pump control module 730, and a third electronic oil pump control module 740.

[0059] The operating status acquisition module 710 is configured to acquire the operating status of the drive motor, wherein the operating status includes risk-free operating condition, high-risk operating condition, auxiliary heating demand operating condition, and normal operating condition;

[0060] The first electronic oil pump control module 720 is configured to control the electronic oil pump at the current transmission oil temperature if the operating state is a risk-free condition. The basic operating speed run;

[0061] The second electronic oil pump control module 730 is configured to control the electronic oil pump to operate at the current transmission oil temperature if the operating state is a high-risk condition or an auxiliary heating requirement condition. Maximum operating speed run;

[0062] The third electronic oil pump control module 740 is configured to, if the operating state is a normal operating condition, according to the formula: The operating speed n of the electronic oil pump is calculated, and the electronic oil pump is controlled to operate at the electronic oil pump operating speed n, wherein, Indicates real-time transmission oil temperature The maximum speed of the electronic oil pump is below. Indicates the electronic oil pump speed and drive motor temperature Correction coefficients between Indicates the electronic oil pump speed and transmission oil temperature Correction coefficients between and Both indicate the target speed of the electronic oil pump.

[0063] In the apparatus of this disclosure embodiment, the electronic oil pump is controlled to operate at different speeds based on the identified operating states of the drive motor, namely, risk-free operating conditions, normal operating conditions, high-risk operating conditions, and conditions where the vehicle requires auxiliary heating. In risk-free operating conditions, the electronic oil pump is controlled to operate at a base operating speed to ensure minimal system energy consumption. In high-risk operating conditions, the electronic oil pump is controlled to operate at the highest operating speed at the current oil temperature, ensuring safe operation of the electronic oil pump and quickly removing heat generated by the drive motor. In conditions requiring auxiliary heating, the electronic oil pump is controlled to operate at the highest operating speed at the current oil temperature, enabling rapid heat exchange between the drive motor and other thermal management systems (battery or passenger compartment), raising the temperature and performance of other systems. In normal operating conditions, the operation of the electronic oil pump is controlled based on the drive motor speed, drive motor torque, drive motor temperature, and transmission oil temperature. As described above, the technical means of this disclosure embodiment provide cooling flow based on the operating state of the drive motor, achieving cooling of the drive motor without wasting cooling flow.

[0064] Figure 8 This is a block diagram illustrating an electronic oil pump control device according to other embodiments of the present disclosure. Figure 8 As shown, the electronic fuel pump control device 800 includes a memory 810 and a processor 820 coupled to the memory 810. The memory 810 is used to store instructions for executing embodiments of the electronic fuel pump control method. The processor 820 is configured to execute the electronic fuel pump control method of any of the embodiments of this disclosure based on the instructions stored in the memory 810.

[0065] Figure 9 This is a block diagram illustrating a computer system for implementing some embodiments of the present disclosure. Figure 9 This is a block diagram illustrating a computer system for implementing some embodiments of the present disclosure. Figure 9 As shown, the computer system 900 can be represented in the form of a general computing device. The computer system 900 includes a memory 910, a processor 920, and a bus 930 connecting different system components.

[0066] The memory 910 may include, for example, system memory, non-volatile storage media, etc. The system memory may store, for example, an operating system, application programs, a boot loader, and other programs. The system memory may include volatile storage media, such as random access memory (RAM) and / or cache memory. The non-volatile storage media may store, for example, instructions for executing at least one embodiment of the electronic oil pump control method. Non-volatile storage media include, but are not limited to, disk storage, optical storage, flash memory, etc.

[0067] The processor 920 can be implemented using a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistors, or other discrete hardware components. Correspondingly, each module, such as the operating status acquisition module, the first electronic oil pump control module, the second electronic oil pump control module, and the third electronic oil pump control module, can be implemented by executing instructions from the central processing unit (CPU)'s runtime memory, or by using dedicated circuitry to execute those steps.

[0068] Bus 930 can use any of the various bus architectures. For example, bus architectures include, but are not limited to, Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MCA) bus, and Peripheral Component Interconnect (PCI) bus.

[0069] The computer system 900 may also include an input / output interface 940, a network interface 950, and a storage interface 960. These interfaces 940, 950, and 960, as well as the memory 910 and processor 920, can be connected via a bus 930. The input / output interface 940 provides a connection interface for input / output devices such as a monitor, mouse, and keyboard. The network interface 950 provides a connection interface for various networked devices. The storage interface 960 provides a connection interface for external storage devices such as floppy disks, USB flash drives, and SD cards.

[0070] Various aspects of this disclosure are described herein with reference to flowchart illustrations and / or block diagrams of methods, apparatus, and computer program products according to embodiments of this disclosure. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations thereof, can be implemented by computer-readable program instructions.

[0071] These computer-readable program instructions are provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable device to produce a machine, such that execution of the instructions by the processor produces means for implementing the functions specified in one or more boxes of the flowchart and / or block diagram.

[0072] These computer-readable program instructions may also be stored in a computer-readable storage medium. These instructions cause a computer to work in a particular manner to produce an article of manufacture, including instructions that implement the functions specified in one or more boxes in a flowchart and / or block diagram.

[0073] This disclosure may take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects.

[0074] In this disclosure, the electronic oil pump is controlled to operate at different speeds based on the identified operating states of the drive motor, namely, risk-free operating conditions, normal operating conditions, high-risk operating conditions, and conditions requiring auxiliary heating of the vehicle. In risk-free operating conditions, the electronic oil pump is controlled to operate at its base operating speed to ensure minimal system energy consumption. In high-risk operating conditions, the electronic oil pump is controlled to operate at its highest operating speed at the current oil temperature, ensuring safe operation of the electronic oil pump and quickly dissipating the heat generated by the drive motor. In conditions requiring auxiliary heating, the electronic oil pump is controlled to operate at its highest operating speed at the current oil temperature, enabling rapid heat exchange between the drive motor and other thermal management systems (battery or passenger compartment), raising the temperature and performance of other systems. In normal operating conditions, the operation of the electronic oil pump is controlled based on the drive motor speed, drive motor torque, drive motor temperature, and transmission oil temperature. As described above, the technical means of this disclosure provide cooling flow based on the operating state of the drive motor, achieving cooling of the drive motor without wasting cooling flow.

[0075] The electronic oil pump control method, apparatus, and medium according to this disclosure have been described in detail above. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0076] While specific embodiments of this disclosure have been described in detail by way of example, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. An electronic oil pump control method, characterized in that, The method includes: The operating status of the drive motor is obtained, including no-risk operating condition, high-risk operating condition, auxiliary heating demand operating condition, and normal operating condition. If the operating state is a risk-free condition, control the electronic oil pump to operate at the current transmission oil temperature. The basic operating speed run; If the operating state is a high-risk condition or an auxiliary heating requirement condition, control the electronic oil pump to maintain the current transmission oil temperature. Maximum operating speed run; If the operating state is a normal operating condition, according to the formula: The operating speed n of the electronic oil pump is calculated, and the electronic oil pump is controlled to operate at the electronic oil pump operating speed n, wherein, Indicates the current transmission oil temperature The maximum operating speed is below. Indicates the electronic oil pump speed and drive motor temperature Correction coefficients between Indicates the electronic oil pump speed and current transmission oil temperature Correction coefficients between and Both indicate the target speed of the electronic oil pump; in, The calculation methods include: If it is detected that T≤T1, then Where T represents the torque of the drive motor; If it is detected that T > T2, then ; If it is detected that T1 < T ≤ T2, then ; The calculation methods include: If it is detected that N≤N1, then Where N represents the speed of the drive motor; If it is detected that N > N2, then ; If it is detected that N1 < N ≤ N2, then ; The calculation methods include: If detected, ,but ,in, Indicates the temperature of the drive motor; If detected, ,but ; If detected, ,but ; The calculation methods include: If detected, ,but ,in, Indicates the current transmission fluid temperature; If detected, ,but ; If detected, ,but .

2. The electronic oil pump control method according to claim 1, characterized in that, The method further includes: obtaining the drive motor torque T, drive motor speed N, and drive motor temperature. ; If it is detected that T≤T1, N≤N1, and ≤80℃, confirming that the drive motor is operating under a risk-free condition; If it is detected that T > T2, N > N2, or This confirms that the drive motor is operating under high-risk conditions. If the drive motor is detected to be running in a stalled state or in a state of reduced efficiency, it is determined that the drive motor is in an operating state requiring auxiliary heating.

3. An electronic oil pump control device, characterized in that, include: The operating status acquisition module is used to acquire the operating status of the drive motor, wherein the operating status includes risk-free operating condition, high-risk operating condition, auxiliary heating demand operating condition, and normal operating condition; The first electronic oil pump control module is used to control the electronic oil pump at the current transmission oil temperature if the operating state is a risk-free condition. The basic operating speed run; The second electronic oil pump control module is used to control the electronic oil pump to operate at the current transmission oil temperature if the operating state is a high-risk condition or an auxiliary heating requirement condition. Maximum operating speed run; The third electronic oil pump control module is used to, if the operating state is normal operating condition, according to the formula: The operating speed n of the electronic oil pump is calculated, and the electronic oil pump is controlled to operate at the electronic oil pump operating speed n, wherein, Indicates the current transmission oil temperature The maximum operating speed is below. Indicates the electronic oil pump speed and drive motor temperature Correction coefficients between Indicates the electronic oil pump speed and current transmission oil temperature Correction coefficients between and Both indicate the target speed of the electronic oil pump; in, The calculation methods include: If it is detected that T≤T1, then Where T represents the torque of the drive motor; If it is detected that T > T2, then ; If it is detected that T1 < T ≤ T2, then ; The calculation methods include: If it is detected that N≤N1, then Where N represents the speed of the drive motor; If it is detected that N > N2, then ; If it is detected that N1 < N ≤ N2, then ; The calculation methods include: If detected, ,but ,in, Indicates the temperature of the drive motor; If detected, ,but ; If detected, ,but ; The calculation methods include: If detected, ,but ,in, Indicates the current transmission fluid temperature; If detected, ,but ; If detected, ,but .

4. An electronic oil pump control device, characterized in that, include: Memory; as well as A processor coupled to the memory, the processor being configured to execute the electronic oil pump control method as described in claim 1 or 2 based on instructions stored in the memory.

5. A computer-readable storage medium, characterized in that, It stores computer program instructions, which, when executed by a processor, implement the electronic oil pump control method as described in claim 1 or 2.

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