Method and device for starting a vehicle oil pump

Abstract

The application relates to a starting method and device of a vehicle oil pump, wherein the method comprises the following steps: acquiring an actual temperature of an environment currently where a vehicle is located; in the case that the actual temperature is less than a preset low-temperature cold starting threshold, determining at least one to-be-impacted oil temperature interval and a corresponding robust running rotating speed of the oil pump of the vehicle according to a low-temperature interval where the actual temperature is located; and controlling the oil pump to perform cold starting according to the at least one to-be-impacted oil temperature interval and the corresponding robust running rotating speed, until the actual oil temperature of the oil pump exits the low-temperature interval and enters a non-low-temperature interval. Therefore, the problems in the prior art that, when a host computer continuously requests high rotating speed and the oil temperature cannot be quickly raised, the electronic oil pump is overheated and overflows, long-time thermal impact causes ablation of the oil pump, the oil pump is prone to starting failure, and finally the normal starting of the automobile is affected, are solved.

Description

Technical Field

[0001] This application relates to the field of design technology for low-temperature cold start software strategies, and in particular to a method and apparatus for starting a vehicle oil pump. Background Technology

[0002] With the rapid development of the new energy industry, OEMs are increasingly broadening their electric drive technology routes. Among them, oil-cooled electric drives combine oil cooling and flat wire technology to integrate components such as motors, reducers, and controllers, sharing housings and other parts to achieve lightweighting and cost reduction. The role of the electronic oil pump in the oil-cooling system is to provide sufficient flow of lubricating oil for shaft gear lubrication and motor cooling. Ensuring rapid start-up and stable operation of the electronic oil pump at low temperatures is a pressing challenge that needs to be addressed.

[0003] In related technologies, patent [CN202010920797.2] proposes an electronic oil pump system for automobiles. In this system, the controller switches to a sensing mode in real time under low-temperature cold start conditions. It collects angle position data through an angle position sensor and uses a sensing sine wave algorithm to control the motor speed. In the case of position sensor failure, it switches to a non-sensor mode in real time. It collects the back electromotive force of the brushless motor through a motor drive chip with position estimation function. Combined with the position estimation algorithm of the control software, it estimates the angle position of the motor and controls the motor speed.

[0004] However, in related technologies, when the host computer continuously requests high speed and the oil temperature cannot rise quickly, there is a risk of overheating and overcurrent of the electronic oil pump. Prolonged thermal shock can cause oil pump burnout, which can easily lead to oil pump start-up failure and ultimately affect the normal starting of the car. This needs to be improved urgently. Summary of the Invention

[0005] This application provides a method and apparatus for starting a vehicle oil pump to solve the problems in related technologies, such as the risk of overheating and overcurrent of the electronic oil pump when the host computer continuously requests high speed and the oil temperature cannot rise quickly, and the risk that prolonged thermal shock will cause the oil pump to burn out, which can easily lead to oil pump start-up failure and ultimately affect the normal starting of the car.

[0006] The first aspect of this application provides a method for starting a vehicle oil pump, comprising the following steps: obtaining the actual temperature of the current environment of the vehicle; if the actual temperature is less than a preset low-temperature cold start threshold, determining at least one oil temperature range to be impacted and a corresponding robust operating speed of the vehicle's oil pump based on the low-temperature range of the actual temperature; and controlling the oil pump to perform a cold start based on the at least one oil temperature range to be impacted and the corresponding robust operating speed, until the actual oil temperature of the oil pump exceeds the low-temperature range and enters a non-low-temperature range.

[0007] Based on the above technical means, the embodiments of this application can obtain the actual temperature of the current environment of the vehicle, thereby accurately detecting the temperature of the vehicle; the embodiments of this application can compare the temperatures to determine at least one oil temperature range to be impacted and the corresponding robust operating speed of the vehicle's oil pump, thereby providing support for subsequent control of the oil pump operation; the embodiments of this application can control the oil pump to perform cold start based on at least one oil temperature range to be impacted and the corresponding robust operating speed, until the actual oil temperature of the oil pump exceeds the low temperature range and enters the non-low temperature range, thereby achieving decoupling from the oil temperature and ensuring rapid start-up and robust operation of the electronic oil pump at low temperatures.

[0008] Optionally, in some embodiments, before determining at least one oil temperature range to be impacted and the corresponding robust speed of the vehicle's oil pump, the method further includes: testing the robust operating speed of the oil pump under different oil temperature ranges on an electric drive test bench to determine the low-temperature range and the non-low-temperature range.

[0009] Based on the above technical means, the embodiments of this application can test the stable operating speed of the oil pump under different oil temperature ranges on an electric drive test bench, determine the low temperature range and non-low temperature range, thereby facilitating speed testing according to different temperature ranges and solving the problem of rapid start-up and stable operation of the electronic oil pump at low temperatures.

[0010] Optionally, in some embodiments, after entering the non-cryogenic range, the method further includes: obtaining the target rotational speed of the oil pump; and controlling the oil pump to operate in response to the target rotational speed.

[0011] Based on the above technical means, the embodiments of this application can obtain the target speed of the oil pump, such as determining the target speed of the oil pump according to different oil temperature ranges; the embodiments of this application can respond to the target speed and control the operation of the oil pump, thereby ensuring that low-temperature cold start is simple, fast and convenient.

[0012] Optionally, in some embodiments, controlling the oil pump to perform a cold start based on the at least one oil temperature range to be impacted and the corresponding robust operating speed includes: controlling the oil pump to run in open loop at the robust operating speed corresponding to the current oil temperature range to be impacted for a preset time, then impacting the next oil temperature range to be impacted for a preset number of times at the robust operating speed, and determining whether the impact is successful; if the impact is successful, then running in open loop at the robust operating speed corresponding to the next oil temperature range to be impacted for a preset time, and continuing to impact until entering a non-low temperature range; if the impact fails, then continuing to run in open loop at the robust operating speed corresponding to the current oil temperature range to be impacted for the preset time, and continuing to impact.

[0013] Based on the above technical means, the embodiments of this application can control the oil pump to run in open loop at the stable operating speed corresponding to the current oil temperature range to be impacted for a certain period of time, and then impact the next stable operating speed corresponding to the oil temperature range to be impacted a certain number of times, and determine whether the impact is successful. Based on the result of successful or unsuccessful impact, the impact is repeated, thereby ensuring that the low temperature cold start strategy is simple, the oil pump software is closed-loop, and decoupled from the oil temperature, so as to ensure the rapid start and stable operation of the electronic oil pump at low temperature.

[0014] A second aspect of this application provides a starting device for a vehicle oil pump, comprising: an acquisition module for acquiring the actual temperature of the current environment of the vehicle; a determination module for determining, when the actual temperature is less than a preset low-temperature cold start threshold, at least one oil temperature range to be impacted and a corresponding robust operating speed of the vehicle's oil pump based on the low-temperature range of the actual temperature; and a control module for controlling the oil pump to perform a cold start based on the at least one oil temperature range to be impacted and the corresponding robust operating speed, until the actual oil temperature of the oil pump exceeds the low-temperature range and enters a non-low-temperature range.

[0015] Optionally, in some embodiments, it further includes: a testing module, used to test the robust operating speed of the oil pump under different oil temperature ranges on an electric drive test bench before determining at least one oil temperature range to be impacted and the corresponding robust speed of the oil pump of the vehicle, so as to determine the low temperature range and the non-low temperature range.

[0016] Optionally, in some embodiments, the system further includes: a speed acquisition module for acquiring the target speed of the oil pump after entering the non-low temperature range; and a working control module for controlling the oil pump to work in response to the target speed.

[0017] Optionally, in some embodiments, the control module includes: a control unit, configured to control the oil pump to run in open loop at a preset time at a robust operating speed corresponding to the current oil temperature range to be impacted, and then impact the next oil temperature range to be impacted a preset number of times at a robust operating speed, and determine whether the impact is successful; a first impact unit, configured to continue impacting at a preset time at a robust operating speed corresponding to the next oil temperature range to be impacted, until entering a non-low temperature range, when the impact is successful; and a second impact unit, configured to continue impacting at a preset time at a robust operating speed corresponding to the current oil temperature range to be impacted, when the impact fails.

[0018] A third aspect of this application provides a vehicle, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the vehicle oil pump starting method as described in the above embodiments.

[0019] A fourth aspect of this application provides a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to implement the vehicle oil pump starting method as described in the above embodiments.

[0020] The beneficial effects of the embodiments of this application are as follows:

[0021] (1) The embodiments of this application can determine at least one oil temperature range to be impacted and the corresponding stable operating speed of the vehicle's oil pump, and control the oil pump to perform cold start until the actual oil temperature of the oil pump breaks out of the low temperature range and enters the non-low temperature range, thereby achieving decoupling from the oil temperature and ensuring the rapid start and stable operation of the electronic oil pump at low temperature.

[0022] (2) The embodiments of this application can test the stable operating speed of the oil pump under different oil temperature ranges on the electric drive test bench, determine the low temperature range and non-low temperature range, thereby facilitating speed testing according to different temperature ranges and solving the problem of rapid start-up and stable operation of the electronic oil pump at low temperature.

[0023] (3) In this embodiment, the oil pump can be controlled to run in open loop at the steady operating speed corresponding to the current oil temperature range to be impacted for a certain period of time, and then impact the steady operating speed corresponding to the next oil temperature range to be impacted a certain number of times, and determine whether the impact is successful. Based on the result of successful or unsuccessful impact, the impact is repeated, thereby ensuring that the low temperature cold start strategy is simple, the oil pump software has a closed loop, and decoupled from the oil temperature, thus ensuring the rapid start and steady operation of the electronic oil pump at low temperatures.

[0024] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0026] Figure 1 This is a flowchart illustrating a method for starting a vehicle oil pump according to an embodiment of this application;

[0027] Figure 2 This is a flowchart of a vehicle oil pump starting method according to an embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the structure of a vehicle oil pump starting device according to an embodiment of this application;

[0029] Figure 4 This is a structural schematic diagram of a vehicle according to an embodiment of this application.

[0030] Among them, 10-starting device for vehicle oil pump; 100-acquisition module, 200-determination module and 300-control module; 401-memory, 402-processor and 403-communication interface. Detailed Implementation

[0031] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0032] The following description, with reference to the accompanying drawings, illustrates a vehicle oil pump starting method and apparatus according to embodiments of this application. Addressing the issues mentioned in the background art where a host computer continuously requests high speeds and the oil temperature cannot rise rapidly, leading to risks of overheating and overcurrent in the electronic oil pump, and prolonged thermal shock causing oil pump erosion, easily resulting in oil pump start-up failure and ultimately affecting the normal starting of the vehicle, this application provides a vehicle oil pump starting method. In this method, at least one oil temperature range to be impacted and the corresponding robust operating speed of the vehicle's oil pump can be determined, and the oil pump is controlled to perform a cold start until the actual oil temperature of the oil pump exceeds the low-temperature range and enters the non-low-temperature range, thereby achieving decoupling from oil temperature and ensuring rapid start-up and robust operation of the electronic oil pump at low temperatures. This solves the problems in the related art where a host computer continuously requests high speeds and the oil temperature cannot rise rapidly, leading to risks of overheating and overcurrent in the electronic oil pump, and prolonged thermal shock causing oil pump erosion, easily resulting in oil pump start-up failure and ultimately affecting the normal starting of the vehicle.

[0033] Specifically, Figure 1 This is a schematic flowchart illustrating a method for starting a vehicle oil pump, as provided in an embodiment of this application.

[0034] like Figure 1 As shown, the method for starting the vehicle's oil pump includes the following steps:

[0035] In step S101, the actual temperature of the current environment of the vehicle is obtained.

[0036] It is understood that the actual temperature of the current environment of the vehicle in this embodiment of the application can affect the working performance of the oil pump, and the ambient temperature signal can be obtained through the host computer.

[0037] In actual implementation, the embodiments of this application can obtain the ambient temperature signal through the host computer, thereby obtaining the actual temperature of the current environment of the vehicle, which provides support for subsequent temperature comparison, and is conducive to decoupling from oil temperature, ensuring the rapid start-up and stable operation of the electronic oil pump at low temperatures.

[0038] In step S102, when the actual temperature is less than the preset low-temperature cold start threshold, at least one oil temperature range to be impacted and the corresponding stable operating speed of the vehicle's oil pump are determined according to the low-temperature range in which the actual temperature is located.

[0039] It is understood that the oil pump in this embodiment can supply the fuel system with sufficient and pressurized fuel; the rotational speed in this embodiment can affect the performance of the oil pump.

[0040] As one possible approach, since oil pumps are difficult to start at low temperatures and cannot operate at maximum capacity continuously when in a low-temperature range, this application embodiment can determine at least one oil temperature range to be impacted and the corresponding stable operating speed of the vehicle's oil pump based on the low-temperature range where the actual temperature is located when the actual temperature is below a certain low-temperature cold start threshold. This provides support for subsequent control of the oil pump operation, thereby ensuring the rapid start and stable operation of the electronic oil pump at low temperatures, while also meeting the cost reduction requirements.

[0041] It should be noted that the preset low-temperature cold start threshold can be set by those skilled in the art according to the actual situation, and no specific restrictions are imposed here.

[0042] Optionally, in some embodiments, before determining at least one oil temperature range to be impacted and the corresponding robust speed of the vehicle's oil pump, the method further includes: testing the robust operating speed of the oil pump under different oil temperature ranges on an electric drive test bench to determine the low-temperature range and the non-low-temperature range.

[0043] It is understood that the electric drive test bench in this application embodiment is one of the key components of the electric vehicle powertrain.

[0044] As one possible implementation method, embodiments of this application can test the robust operating speed of the oil pump under different oil temperature ranges on an electric drive test bench to determine the low-temperature range and the non-low-temperature range. In the low-temperature range, the oil pump achieves robust operation by limiting the Iq current, while in the non-low-temperature range, the Iq current is released. Table 1 shows the correspondence between oil temperature ranges and oil pump speeds, as shown in Table 1:

[0045] Table 1

[0046]

[0047] As shown in Table 1, the low temperature range is divided into two ranges. In the range of oil temperature ≤ -B, the oil pump cannot operate in a closed loop and can only operate in an open loop at a speed of a. In the range of oil temperature -B--C, the oil pump can operate in a closed loop, and the oil pump can operate steadily at a speed of b.

[0048] In step S103, the oil pump is controlled to perform a cold start based on at least one oil temperature range to be impacted and the corresponding robust operating speed, until the actual oil temperature of the oil pump breaks out of the low temperature range and enters the non-low temperature range.

[0049] It is understood that the cold start in this application embodiment can be the engine being turned off, cooling down after a period of time, and the temperature being much lower than the normal operating temperature.

[0050] In actual implementation, the embodiments of this application can control the oil pump to perform cold start according to at least one oil temperature range to be impacted and the corresponding robust operating speed, until the actual oil temperature of the oil pump breaks out of the low temperature range and enters the non-low temperature range, thereby ensuring that the low temperature cold start strategy is simple, achieving decoupling from the oil temperature, solving the problem of rapid start and robust operation of the electronic oil pump at low temperature, and meeting the cost reduction requirements at the same time.

[0051] Optionally, in some embodiments, after entering the non-cryogenic range, the method further includes: obtaining the target rotational speed of the oil pump; and controlling the oil pump to operate in response to the target rotational speed.

[0052] In actual implementation, the embodiments of this application can obtain the target speed of the oil pump, such as determining the target speed of the oil pump according to different oil temperature ranges; the embodiments of this application can respond to the target speed and control the operation of the oil pump, thereby achieving rapid start-up and stable operation at low temperatures.

[0053] Optionally, in some embodiments, the oil pump is controlled to perform a cold start based on at least one oil temperature range to be impacted and the corresponding robust operating speed. This includes: controlling the oil pump to run in open loop at the robust operating speed corresponding to the current oil temperature range to be impacted for a preset time, then impacting the next oil temperature range to be impacted for a preset number of times, and determining whether the impact is successful; if the impact is successful, then after running in open loop at the robust operating speed corresponding to the next oil temperature range to be impacted for a preset time, the impact continues until the non-low temperature range is entered; if the impact fails, then after continuing to run in open loop at the robust operating speed corresponding to the current oil temperature range to be impacted for a preset time, the impact continues.

[0054] It is understood that the rotational speed impact in the embodiments of this application can assess the mechanical strength of the electric drive assembly and ensure the lifespan of automotive components.

[0055] Specifically, in this embodiment, when the current oil temperature range to be impacted is ≤-B, the oil pump is controlled to run at speed a corresponding to the ≤-B range for a certain period of time (TBDs), and then impacts the next oil temperature range to be impacted at a stable operating speed a certain number of times, such as impacting the next oil temperature range to be impacted at speed b corresponding to the -B--C range three times, and it is determined whether the impact is successful. In this embodiment, when the impact is successful, the oil pump reaches a speed of b±TBD rpm, and after a period of ts (seconds), the oil pump runs in open loop at the stable operating speed corresponding to the next oil temperature range to be impacted for a preset time, such as running in closed loop at speed b corresponding to the next oil temperature range to be impacted at the -B--C range. After TBDs, the pump continues to impact at the c speed corresponding to the non-low temperature range >-C three times. When the pump successfully impacts the c speed, that is, when the pump reaches the b±TBD rpm speed for ts, the pump enters the non-low temperature range and can respond normally to the target speed. When the pump fails to impact the c speed, it runs TBDs in a closed loop at b speed and then impacts the c speed three times. In this embodiment, when the impact fails, it can continue to run TBDs in an open loop at the robust operating speed corresponding to the current oil temperature range to be impacted for a certain period of time. For example, it can continue to run TBDs in an open loop at the a speed corresponding to the ≤-B range and then impact again, such as impacting the b speed corresponding to the next oil temperature range to be impacted -B--C three times.

[0056] Furthermore, in this embodiment of the application, when the current oil temperature range to be impacted is the -B to -C range, after running TBDs in a closed loop at speed b, it impacts speed c three times. When the impact is successful, the oil pump reaches a speed of c ± TBD rpm for ts, and then the oil pump enters the non-low temperature range and responds normally to the target speed. When the impact is unsuccessful, it runs TBDs in a closed loop at speed b again and impacts speed c three times.

[0057] Furthermore, the embodiments of this application can respond normally to the target rotational speed when the temperature is not low.

[0058] This application embodiment can control the oil pump to operate in open loop at a stable operating speed corresponding to the current oil temperature range to be impacted for a certain period of time, and then impact the next stable operating speed corresponding to the next oil temperature range to be impacted a certain number of times. It can also determine whether the impact is successful. Based on the success or failure of the impact, the impact can be repeated. This ensures that the low-temperature cold start strategy is simple, the oil pump software has a closed loop, and it is decoupled from the oil temperature, thus ensuring the rapid start and stable operation of the electronic oil pump at low temperatures.

[0059] It should be noted that the preset number of times and preset duration can be set by those skilled in the art according to the actual situation, and no specific restrictions are imposed here.

[0060] Next, as Figure 2 As shown, a specific embodiment of the vehicle oil pump starting method of this application will be described in detail.

[0061] like Figure 2 As shown, embodiments of this application may include the following steps:

[0062] Step S201: Oil pump wake-up.

[0063] Step S202: Input ambient temperature T.

[0064] Step S203: T≤-B.

[0065] Step S204: After running the TBDs in open loop at speed a, impact it three times at speed b.

[0066] Step S205: Successful impact means the oil pump reaches a speed of b±TBD rpm for ts.

[0067] Step S206: Impact failed.

[0068] Step S207: After running the TBDs in closed loop at speed b, impact it three times at speed c.

[0069] Step S208: Successful impact means the oil pump reaches a speed of c±TBD rpm for ts.

[0070] Step S209: Exit the low temperature range and respond normally to the target speed.

[0071] Step S210: Impact failed.

[0072] Step S211: -B<T≤-C.

[0073] Step S212: After running the TBDs in closed loop at speed b, impact it three times at speed c.

[0074] Step S213: Successful impact means the oil pump reaches a speed of c±TBD rpm for ts.

[0075] Step S214: Exit the low temperature range and respond normally to the target speed.

[0076] Step S215: Impact failed.

[0077] Step S216: T > -C.

[0078] Step S217: Normal response to target speed.

[0079] According to the vehicle oil pump starting method proposed in this application, at least one oil temperature range to be impacted and the corresponding robust operating speed of the vehicle's oil pump can be determined. The oil pump is then controlled to perform a cold start until the actual oil temperature of the pump exceeds the low-temperature range and enters the non-low-temperature range. This decouples the pump from the oil temperature, ensuring rapid start-up and robust operation of the electronic oil pump at low temperatures. This solves the problem in related technologies where, when the host computer continuously requests high speed and the oil temperature cannot rise rapidly, there is a risk of overheating and overcurrent in the electronic oil pump. Prolonged thermal shock can lead to oil pump burnout, easily causing oil pump start-up failure and ultimately affecting the normal starting of the vehicle.

[0080] Next, referring to the accompanying drawings, a vehicle oil pump starting device according to an embodiment of this application is described.

[0081] Figure 3 This is a schematic diagram of the starting device for a vehicle oil pump according to an embodiment of this application.

[0082] like Figure 3 As shown, the starting device 10 for the vehicle oil pump includes: an acquisition module 100, a determination module 200, and a control module 300.

[0083] Specifically, the acquisition module 100 is used to acquire the actual temperature of the current environment in which the vehicle is located.

[0084] The determination module 200 is used to determine at least one oil temperature range to be impacted and the corresponding robust operating speed of the vehicle's oil pump based on the low temperature range where the actual temperature is located, when the actual temperature is less than the preset low temperature cold start threshold.

[0085] The control module 300 is used to control the oil pump to perform a cold start based on at least one oil temperature range to be impacted and the corresponding robust operating speed, until the actual oil temperature of the oil pump breaks out of the low temperature range and enters the non-low temperature range.

[0086] Optionally, in some embodiments, the vehicle oil pump starting device 10 further includes a test module.

[0087] The testing module is used to test the steady operating speed of the oil pump under different oil temperature ranges on an electric drive test bench before determining at least one oil temperature range to be impacted and the corresponding steady speed, thereby determining the low temperature range and the non-low temperature range.

[0088] Optionally, in some embodiments, the starting device 10 of the vehicle oil pump further includes a speed acquisition module and a working control module.

[0089] The speed acquisition module is used to acquire the target speed of the oil pump after entering the non-low temperature range.

[0090] The operation control module is used to control the oil pump operation in response to the target speed.

[0091] Optionally, in some embodiments, the control module 300 includes: a control unit, a first impact unit, and a second impact unit.

[0092] The control unit is used to control the oil pump to run in open loop at the steady operating speed corresponding to the current oil temperature range to be impacted for a preset time, and then impact the next steady operating speed corresponding to the oil temperature range to be impacted a preset number of times, and determine whether the impact is successful.

[0093] The first impact unit, when the impact is successful, will continue to impact the oil temperature range to be impacted by operating at a steady operating speed for a preset time, and then continue to impact until it enters the non-low temperature range.

[0094] The second impact unit is used to continue impacting at a preset time after the current oil temperature range corresponding to the stable operating speed for the current impact failure.

[0095] It should be noted that the foregoing explanation of the vehicle oil pump starting method embodiment also applies to the vehicle oil pump starting device of this embodiment, and will not be repeated here.

[0096] According to the vehicle oil pump starting device proposed in this application embodiment, at least one oil temperature range to be impacted and the corresponding robust operating speed of the vehicle's oil pump can be determined. The oil pump is then controlled to perform a cold start until the actual oil temperature of the pump exceeds the low-temperature range and enters the non-low-temperature range. This achieves decoupling from oil temperature, ensuring rapid start-up and robust operation of the electronic oil pump at low temperatures. This solves the problem in related technologies where, when the host computer continuously requests high speed and the oil temperature cannot rise rapidly, there is a risk of overheating and overcurrent in the electronic oil pump. Prolonged thermal shock can lead to oil pump burnout, easily causing oil pump start-up failure and ultimately affecting the normal starting of the vehicle.

[0097] Figure 4 A schematic diagram of the structure of a vehicle provided in an embodiment of this application. The vehicle may include:

[0098] The memory 401, the processor 402, and the computer program stored on the memory 401 and capable of running on the processor 402.

[0099] When the processor 402 executes the program, it implements the vehicle oil pump starting method provided in the above embodiments.

[0100] Furthermore, the vehicle also includes:

[0101] Communication interface 403 is used for communication between memory 401 and processor 402.

[0102] The memory 401 is used to store computer programs that can run on the processor 402.

[0103] The memory 401 may include high-speed RAM (Random Access Memory) memory, and may also include non-volatile memory, such as at least one disk storage.

[0104] If the memory 401, processor 402, and communication interface 403 are implemented independently, then the communication interface 403, memory 401, and processor 402 can be interconnected via a bus to complete communication between them. The bus can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, or an EISA (Extended Industry Standard Architecture) bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 4 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0105] Optionally, in a specific implementation, if the memory 401, processor 402, and communication interface 403 are integrated on a single chip, then the memory 401, processor 402, and communication interface 403 can communicate with each other through an internal interface.

[0106] Processor 402 may be a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement embodiments of this application.

[0107] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the above-described method for starting a vehicle oil pump.

[0108] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0109] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0110] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0111] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (FPGAs), field-programmable gate arrays (FPGAs), etc.

[0112] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0113] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A method for starting a vehicle oil pump, characterized in that, Includes the following steps: Obtain the actual temperature of the vehicle's current environment; When the actual temperature is less than the preset low temperature cold start threshold, at least one oil temperature range to be impacted and the corresponding robust operating speed of the vehicle's oil pump are determined according to the low temperature range in which the actual temperature is located. as well as The oil pump is controlled to perform a cold start according to the at least one oil temperature range to be impacted and the corresponding robust operating speed, until the actual oil temperature of the oil pump breaks out of the low temperature range and enters the non-low temperature range; The step of controlling the oil pump for cold start based on the at least one oil temperature range to be impacted and the corresponding robust operating speed includes: After controlling the oil pump to operate in open loop at a stable operating speed corresponding to the current oil temperature range to be impacted for a preset time, it impacts the next stable operating speed corresponding to the next oil temperature range to be impacted a preset number of times, and determines whether the impact is successful. If the impact is successful, the system will continue to operate at the steady operating speed corresponding to the next oil temperature range to be impacted for a preset time in open loop, until it enters the non-low temperature range. If the impact fails, continue to run in open loop at the steady operating speed corresponding to the current oil temperature range to be impacted for the preset time, and then continue the impact.

2. The method according to claim 1, characterized in that, Before determining at least one temperature range of the oil pump to be impacted and the corresponding robust operating speed of the vehicle, the process also includes: On an electric drive test bench, the oil pump's stable operating speed was tested under different oil temperature ranges to determine the low-temperature range and the non-low-temperature range.

3. The method according to claim 1, characterized in that, After entering the non-low temperature zone, the following is also included: Obtain the target rotational speed of the oil pump; The oil pump is controlled to operate in response to the target rotational speed.

4. A starting device for a vehicle oil pump, characterized in that, include: The acquisition module is used to acquire the actual temperature of the vehicle's current environment. The determination module is used to determine at least one oil temperature range to be impacted and the corresponding robust operating speed of the vehicle's oil pump based on the low temperature range in which the actual temperature is located, when the actual temperature is less than a preset low temperature cold start threshold. as well as The control module is used to control the oil pump to perform a cold start according to the at least one oil temperature range to be impacted and the corresponding robust operating speed, until the actual oil temperature of the oil pump breaks out of the low temperature range and enters the non-low temperature range; The control module includes: The control unit is used to control the oil pump to run in open loop at a steady operating speed corresponding to the current oil temperature range to be impacted for a preset time, and then impact the next steady operating speed corresponding to the oil temperature range to be impacted a preset number of times, and to determine whether the impact is successful. The first impact unit is used to continue impacting at the steady operating speed corresponding to the next oil temperature range to be impacted for a preset time after the impact is successful, until it enters the non-low temperature range. The second impact unit is used to continue the impact after the preset time at the stable operating speed corresponding to the current oil temperature range to be impacted when the impact fails.

5. The apparatus according to claim 4, characterized in that, Also includes: The testing module is used to test the robust operating speed of the oil pump under different oil temperature ranges on an electric drive test bench before determining at least one oil temperature range to be impacted and the corresponding robust operating speed of the oil pump of the vehicle, thereby determining the low temperature range and the non-low temperature range.

6. The apparatus according to claim 4, characterized in that, Also includes: The speed acquisition module is used to acquire the target speed of the oil pump after entering the non-low temperature range; The operation control module is used to control the operation of the oil pump in response to the target rotational speed.

7. A vehicle, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement the vehicle oil pump starting method as described in any one of claims 1-3.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the vehicle oil pump starting method as described in any one of claims 1-3.

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