Gearbox oil pump control method and device, electronic equipment and storage medium

Abstract

The invention discloses a gearbox oil pump control method and device, electronic equipment and a storage medium. The control method comprises the steps of obtaining a vehicle state; the vehicle state comprises a vehicle start-stop state and a gearbox temperature; determining an oil pump control mode according to the vehicle state; selecting a corresponding oil pump control strategy according to the oil pump control mode; and controlling the oil pump according to the oil pump control strategy. By the adoption of the scheme, the oil pump can be controlled according to the actual vehicle state, so that on the premise that the requirement for the lubricating oil flow of all parts of the gearbox is met, energy consumption of the oil pump is reduced, control over the oil pump is facilitated, and precise oil supply and efficient heat dissipation of the gearbox part are achieved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of automobile technology, and in particular to a control method, device, electronic device and storage medium for a transmission oil pump. Background Art

[0002] With the rapid development of new energy vehicles, the performance parameters of electric drive systems are constantly improving, gradually developing towards high speed, high torque and high power. The improvement of these performance parameters will lead to a significant increase in the cooling and lubrication requirements of the electric drive system. The oil cooling system adjusts the oil volume by controlling the speed of the oil pump, but the control method of the oil pump in the existing technology is single and has limitations, and it is impossible to achieve accurate oil supply and efficient heat dissipation for the gearbox. Summary of the invention

[0003] Based on the above problems, the embodiments of the present invention provide a control method, device, electronic device and storage medium for a transmission oil pump, which are beneficial to the control of the oil pump and can achieve accurate oil supply and efficient heat dissipation for the transmission part.

[0004] In a first aspect, an embodiment of the present invention provides a method for controlling a transmission oil pump, comprising:

[0005] Obtaining vehicle status; the vehicle status includes vehicle start / stop status and transmission temperature;

[0006] determining an oil pump control mode according to the vehicle state;

[0007] Selecting a corresponding oil pump control strategy according to the oil pump control mode;

[0008] The oil pump is controlled according to the oil pump control strategy.

[0009] In a second aspect, an embodiment of the present invention further provides a control device for a transmission oil pump, comprising:

[0010] Vehicle status acquisition, used to acquire vehicle status; the vehicle status includes vehicle start / stop status and gearbox temperature;

[0011] An oil pump control mode determination module, used to determine an oil pump control mode according to the vehicle state;

[0012] An oil pump control strategy selection module, used to select a corresponding oil pump control strategy according to the oil pump control mode;

[0013] The oil pump control module is used to control the oil pump according to the oil pump control strategy.

[0014] In a third aspect, an embodiment of the present invention further provides a terminal device, including:

[0015] one or more processors;

[0016] A storage device for storing one or more programs;

[0017] The one or more programs are executed by the one or more processors, so that the one or more processors implement the transmission oil pump control method provided by the embodiment of the present invention.

[0018] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the transmission oil pump control method provided by an embodiment of the present invention.

[0019] The control method of the gearbox oil pump provided in the embodiment of the present invention first obtains the vehicle state, which includes the vehicle start / stop state and the gearbox temperature; secondly, determines the oil pump control mode according to the vehicle state; then selects the corresponding oil pump control strategy according to the oil pump control mode; and finally controls the oil pump according to the oil pump control strategy. Using the above method, the oil pump can be controlled according to the actual vehicle state, which can not only meet the lubricating oil flow requirements of various gearbox components, but also reduce the energy consumption of the oil pump, which is beneficial to the control of the oil pump, and realizes accurate oil supply and efficient heat dissipation of the gearbox part. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic flow chart of a method for controlling a transmission oil pump provided in Embodiment 1 of the present invention;

[0021] Figure 2 A schematic flow chart of a method for controlling a transmission oil pump provided in Embodiment 2 of the present invention;

[0022] Figure 3 A schematic flow chart of a method for controlling a transmission oil pump provided in Embodiment 3 of the present invention;

[0023] Figure 4 A schematic flow chart of a method for controlling a transmission oil pump provided in a fourth embodiment of the present invention;

[0024] Figure 5 This is a structural schematic diagram of a transmission oil pump control device provided in Embodiment 5 of the present invention. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0026] It should be mentioned before discussing exemplary embodiments in more detail that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe various operations (or steps) as sequential processes, many operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of various operations can be rearranged. The process can be terminated when its operation is completed, but can also have additional steps not included in the accompanying drawings. The process can correspond to methods, functions, procedures, subroutines, subprograms, etc. In addition, the embodiments in the present invention and the features in the embodiments can be combined with each other without conflict.

[0027] The term “including” and its variations used in the present invention are open inclusions, that is, “including but not limited to.” The term “based on” means “based at least in part on.” The term “one embodiment” means “at least one embodiment.”

[0028] It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish the corresponding contents, and are not used to limit the order or interdependence.

[0029] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0030] Embodiment 1

[0031] Figure 1 A flow chart of a method for controlling a transmission oil pump is provided in accordance with a first embodiment of the present invention. The method may be applicable to controlling a transmission oil pump of a vehicle electric drive system. The method may be executed by a control device for the transmission oil pump, wherein the device may be implemented by software and / or hardware and is generally integrated on an electronic device. In this embodiment, the electronic device includes but is not limited to a controller and other devices.

[0032] like Figure 1 As shown, a control method for a transmission oil pump provided in Embodiment 1 of the present invention comprises the following steps:

[0033] S110: Obtain vehicle status.

[0034] The vehicle status includes but is not limited to the vehicle start / stop status and the transmission temperature. The vehicle start / stop status can be understood as the vehicle's operating status, that is, whether the vehicle is in the start, stop or driving state. The vehicle start / stop status can be detected by the on-board controller and sent to the transmission oil pump control device. The transmission temperature refers to the internal temperature of the transmission, and can also be understood as the oil pump ambient temperature. The transmission temperature can be detected by the temperature sensor in the transmission and sent to the transmission oil pump control device.

[0035] S120: Determine an oil pump control mode according to a vehicle state.

[0036] In the embodiment of the present invention, different vehicle states correspond to different oil pump control modes. After confirming the current vehicle state, the oil pump control mode required by the current vehicle state can be determined according to the current vehicle state.

[0037] For example, before the vehicle leaves the factory, the lubricating oil flow requirements that meet different vehicle start-stop states and / or different gearbox temperatures can be determined based on bench tests, etc. Different lubricating oil flow requirements correspond to different oil pump control modes, and then the corresponding relationship between different vehicle states and oil pump control modes is obtained. In actual vehicle applications, the oil pump control mode corresponding to the current vehicle state can be determined based on the corresponding relationship.

[0038] S130. Select a corresponding oil pump control strategy according to the oil pump control mode.

[0039] Furthermore, each oil pump control mode corresponds to a different oil pump control strategy, and the oil pump control mode and the oil pump control strategy may be in a one-to-one correspondence. After the oil pump control mode is determined, the oil pump control strategy corresponding to the oil pump control mode may be directly selected. The oil pump control strategy under each oil pump control mode may also be obtained based on bench tests.

[0040] S140: Control the oil pump according to the oil pump control strategy.

[0041] By executing the selected oil pump control strategy, the lubricating oil flow rate provided by the oil pump can meet the lubricating oil flow rate demand under the current vehicle state.

[0042] The embodiments of the present invention do not limit the specific design of the above oil pump control mode and the corresponding oil pump control strategy, and those skilled in the art may design them according to actual tests.

[0043] A control method for a transmission oil pump provided in a first embodiment of the present invention first obtains the vehicle state, which includes the vehicle start / stop state and the transmission temperature; secondly, determines the oil pump control mode according to the vehicle state; then selects the corresponding oil pump control strategy according to the oil pump control mode; and finally controls the oil pump according to the oil pump control strategy. Using the above method, the oil pump can be controlled according to the actual vehicle state, which can not only meet the lubricating oil flow requirements of various transmission components, but also reduce the energy consumption of the oil pump, which is beneficial to the control of the oil pump, and realizes accurate oil supply and efficient heat dissipation of the transmission part.

[0044] Embodiment 2

[0045] Figure 2A flow chart of a control method for a transmission oil pump provided in the second embodiment of the present invention is optimized on the basis of the above embodiments. In this embodiment, (S120) is further specified as: S220, when the vehicle is in a state of starting but not driving, determining the first oil pump control mode; (S130) is further specified as: S230, selecting the first oil pump control strategy according to the first oil pump control mode; in the first oil pump control strategy, the oil pump operates intermittently; (S140) is further specified as: S240, intermittently controlling the oil pump operation according to the first oil pump control strategy. Please refer to the first embodiment for the contents not yet fully described in this embodiment.

[0046] like Figure 2 As shown, a control method for a transmission oil pump provided by Embodiment 2 of the present invention comprises the following steps:

[0047] S210: Obtain vehicle status.

[0048] The vehicle status includes the vehicle start / stop status and the transmission temperature.

[0049] S220: When the vehicle is in a started but not running state, determine a first oil pump control mode.

[0050] In the second embodiment of the present invention, it can be determined whether the vehicle is in a started but not driven state according to the vehicle start-stop state. The started but not driven state means that the vehicle is in an ignition start state, but the driver has not stepped on the accelerator and the vehicle is not driving.

[0051] When it is determined that the vehicle is in a started but not running state, it is determined that the oil pump control mode required by this state is the first oil pump control mode.

[0052] S230: Select a first oil pump control strategy according to the first oil pump control mode.

[0053] Furthermore, the first oil pump control mode is correspondingly provided with a first oil pump control strategy, in which the oil pump operates intermittently. Specifically, in the first oil pump control strategy, the oil pump is controlled to start intermittently, thereby performing intermittent lubrication.

[0054] When the vehicle is started but not running, a large lubricating oil flow is not required. In this state, controlling the oil pump to run intermittently can not only ensure the establishment of oil film on the gearbox gears, that is, ensure the lubrication of the gears, but also make the oil pump have lower energy consumption.

[0055] S240: Control the oil pump to operate intermittently according to the first oil pump control strategy.

[0056] The oil pump can be controlled to start intermittently according to the first oil pump control strategy to achieve intermittent lubrication of the gearbox gears.

[0057] The control method of the transmission oil pump proposed in the second embodiment of the present invention adopts the first oil pump control strategy to control the intermittent operation of the oil pump when the vehicle is in the starting but not driving state, which can ensure the lubrication of the transmission gears and reduce the energy consumption of the oil pump.

[0058] On the basis of the above embodiment, the present invention further proposes a variant embodiment of the above embodiment. It should be noted that, in order to make the description concise, only the differences from the above embodiment are described in the variant embodiment.

[0059] Exemplarily, in one embodiment, the above (S240) can be concretized as: controlling the intermittent start of the oil pump with a first duration as the time interval and a second duration as the operation maintenance duration; wherein the first duration and the second duration are determined based on bench tests.

[0060] In the first oil pump control strategy, by building a timer and resetting the timing at intervals, the oil pump speed can be controlled to be periodically set according to the first duration being the interval between two operations of the oil pump and the second duration being the single operation of the oil pump, so as to control the intermittent start of the oil pump and realize intermittent lubrication when the vehicle is started but not driving.

[0061] Among them, the specific values ​​of the first duration and the second duration are not limited, and technical personnel in this field can set them according to actual needs. Through bench tests, it is found that the first duration can be 2-4 minutes, and the second duration can be 4-6 minutes. Intermittent lubrication is performed in this way to ensure that the oil film is well established.

[0062] Embodiment 3

[0063] Figure 3 A flow chart of a control method for a transmission oil pump provided in the third embodiment of the present invention is optimized on the basis of the above embodiments. In this embodiment, (S120) is further specified as: S320, when the vehicle is in a driving state, determine the second oil pump control mode; (S130) is further specified as: S330, select the second oil pump control strategy according to the second oil pump control mode; in the second oil pump control strategy, the oil pump runs continuously, and the speed of the oil pump is related to the temperature of the transmission; (S140) is further specified as: S340, adjust the speed of the oil pump according to the second oil pump control strategy. Please refer to the above embodiments for the contents not yet fully described in this embodiment.

[0064] like Figure 3 As shown, a method for controlling a transmission oil pump provided by Embodiment 3 of the present invention comprises the following steps:

[0065] S310: Obtain vehicle status.

[0066] The vehicle status includes the vehicle start / stop status and the transmission temperature.

[0067] S320: When the vehicle is in a driving state, determine a second oil pump control mode.

[0068] In the third embodiment of the present invention, it is possible to determine whether the vehicle is in a driving state according to the vehicle start-stop state. When it is determined that the vehicle is in a driving state, the oil pump control mode required by the state is determined to be the second oil pump control mode.

[0069] S330: Select a second oil pump control strategy according to the second oil pump control mode.

[0070] Furthermore, the second oil pump control mode corresponds to a second oil pump control strategy, in which the oil pump runs continuously, and the speed of the oil pump is related to the temperature of the gearbox. In other words, in the second oil pump control strategy, the oil pump is controlled to run continuously, and the speed of the oil pump is related to the actual temperature of the gearbox.

[0071] The inventor has found that during vehicle driving, the oil pump speed required by the gearbox in different temperature ranges is different. In this embodiment, before the vehicle leaves the factory, a corresponding classification table of different gearbox temperature ranges and oil pump speeds under driving conditions can be determined based on bench tests, etc. The corresponding classification table may include the optimal oil pump speeds corresponding to different gearbox temperature ranges.

[0072] For example, generally speaking, when the temperature of the gearbox is higher, in order to ensure the lubrication and cooling effect, the oil pump speed required is higher. Of course, the corresponding relationship between the oil pump speed and the gearbox temperature may also be related to various factors, which are only exemplified here.

[0073] During the actual driving process of the vehicle, after entering the second oil pump control mode, according to the corresponding classification table of different gearbox temperature ranges and oil pump speeds, the actual gearbox temperature is used as input and the oil pump speed is used as output to realize automatic adjustment of the oil pump speed.

[0074] S340: Adjust the speed of the oil pump according to the second oil pump control strategy.

[0075] The control method of the transmission oil pump provided in the third embodiment of the present invention adopts the second oil pump control strategy to control the continuous operation of the oil pump when the vehicle is in driving state, and can adjust the speed of the oil pump according to the transmission temperature output, thereby ensuring the lubrication and cooling effect of the transmission when the vehicle is driving.

[0076] On the basis of the above embodiment, the present invention further proposes a variant embodiment of the above embodiment. It should be noted that, in order to make the description concise, only the differences from the above embodiment are described in the variant embodiment.

[0077] Exemplarily, in some embodiments, the vehicle state also includes the transmission output shaft speed and torque. In the second oil pump control strategy, the oil pump speed is also related to the transmission output shaft speed and torque; the above (S330) can be concretized as follows: in the second oil pump control mode, the lubricating oil flow of the oil pump is determined in combination with the transmission output shaft speed and torque; the second oil pump control strategy is determined according to the transmission temperature and the lubricating oil flow of the oil pump.

[0078] Among them, those skilled in the art know that during the driving process of the vehicle, the required lubricating oil flow rate in the gearbox (i.e., the lubricating oil flow rate of the oil pump) is related to the gear speed of the gearbox output shaft and the gear load torque. The oil pump speed is the speed of the oil pump motor, and the oil pump speed is related to the lubricating oil flow rate delivered by the oil pump. Generally speaking, the higher the oil pump speed, the greater the lubricating oil flow rate.

[0079] In this embodiment, the lubrication capacity of the oil pump and the lubrication test of the oil pump under different gearbox operating loads can be carried out through bench tests to obtain a corresponding operating condition table of the gearbox output shaft speed and torque and the lubricating oil flow rate. Subsequently, the lubricating oil flow rate classification and the gearbox temperature classification are carried out to obtain a corresponding classification table of different gearbox temperature ranges and oil pump speeds. Table 1 is a classification table provided in an embodiment of the present invention. Referring to Table 1, the classification table may include the optimal oil pump speeds corresponding to different gearbox temperature ranges and different lubricating oil flows.

[0080] Table 1

[0081]

[0082] Table 1 shows, by way of example, three transformer temperature ranges and oil pump speeds corresponding to three groups of required lubricating oil flow rates, but is not limited thereto.

[0083] During actual driving of the vehicle, after entering the second oil pump control mode, according to the classification table, the actual gearbox temperature, gearbox output shaft speed and torque are used as inputs, and the oil pump speed is used as output to achieve automatic adjustment of the oil pump speed.

[0084] In this embodiment, the oil pump speed is regulated in combination with various working conditions of the gearbox to ensure that the oil pump operating speed matches the current actual working condition.

[0085] Exemplarily, in other embodiments, after the above (S330), it also includes: when the transmission temperature is lower than the low temperature threshold, obtaining the actual speed of the oil pump, and determining the target speed of the oil pump corresponding to the current transmission temperature in the second oil pump control strategy; when the difference between the target speed and the actual speed is within a preset difference range, continuing to execute the second oil pump control strategy, and when the difference between the target speed and the actual speed exceeds the preset difference range, stopping executing the second oil pump control strategy.

[0086] The inventors have found that in a low temperature environment, the viscosity of the lubricating oil is relatively high, which may cause the actual speed of the oil pump to fail to reach the target speed. The actual speed is the actual speed of the oil pump motor, and the target speed is the target speed required by the oil pump determined according to the second oil pump control strategy (for example, according to Table 1). When the target speed differs greatly from the actual speed, the lubrication capacity of the oil pump will be insufficient, affecting the normal driving of the vehicle.

[0087] Based on this, the present embodiment proposes that after the gearbox temperature is obtained, the gearbox temperature can be compared with a preset low temperature threshold. If it is determined that the gearbox temperature is lower than the low temperature threshold, it indicates that there may be a problem of insufficient lubrication capacity due to increased viscosity of the lubricating oil. At this time, the oil pump speed can be checked to determine whether the difference between the target speed and the actual speed of the oil pump exceeds the preset difference range. If the difference between the target speed and the actual speed does not exceed the preset difference range, it means that the current oil pump speed meets the required target speed, and the oil pump can be controlled normally according to the second oil pump control strategy. If the difference between the target speed and the actual speed exceeds the preset difference range, it means that the current oil pump speed no longer meets the required target speed, and it can no longer be controlled according to the second oil pump control strategy, and the torque limit flag is output to limit the torque and speed of the drive axle where the oil pump is located to protect the normal operation of the vehicle.

[0088] The specific values ​​of the above-mentioned low temperature threshold and the preset difference range are not limited, and those skilled in the art can set them according to actual conditions.

[0089] Embodiment 4

[0090] Figure 4 The flowchart of a control method for a transmission oil pump provided in the fourth embodiment of the present invention is optimized on the basis of the above embodiments. In this embodiment, the control method for the transmission oil pump also includes the following steps: S450, obtaining the working state of the oil pump; S460, determining whether the oil pump is faulty according to the working state of the oil pump; S470, when the oil pump fails, selecting a corresponding post-processing strategy for the oil pump fault according to the fault type; the fault type includes communication fault and operation fault; S480, executing the post-processing strategy for the oil pump fault. Please refer to the above embodiments for the contents not yet fully described in this embodiment.

[0091] like Figure 4 As shown, a method for controlling a transmission oil pump provided by a fourth embodiment of the present invention includes the following steps:

[0092] S410: Obtain vehicle status.

[0093] Vehicle status includes vehicle start / stop status and transmission temperature;

[0094] S420: Determine the oil pump control mode according to the vehicle state.

[0095] S430: Select a corresponding oil pump control strategy according to the oil pump control mode.

[0096] S440: Control the oil pump according to the oil pump control strategy.

[0097] The specific implementation of the above S410-S440 can refer to any of the above embodiments, which will not be repeated here.

[0098] S450: Obtain the working status of the oil pump.

[0099] The working state of the oil pump includes but is not limited to the communication state between the oil pump and the vehicle and the actual operating state of the oil pump. The actual operating state includes but is not limited to actual working parameter data such as oil pump voltage, oil pump current and oil pump load.

[0100] S460: Determine whether the oil pump is faulty according to the working status of the oil pump.

[0101] In this embodiment, whether the oil pump fails can be determined based on the working state of the oil pump. For example, if the oil pump cannot communicate with the vehicle, it is determined that the oil pump communication fails; if the actual working parameter data of the oil pump is abnormal, it can be determined that the oil pump operation fails.

[0102] S470: When an oil pump fails, a corresponding oil pump failure post-processing strategy is selected according to the failure type.

[0103] Among them, the fault types include but are not limited to communication faults and operation faults. Communication faults may include oil pump communication faults and oil pump address bit floating faults. Operation faults include but are not limited to overvoltage faults, undervoltage faults, overcurrent faults, overload faults and stuck faults.

[0104] S480: Execute the post-processing strategy for the oil pump failure.

[0105] Under fault conditions, the corresponding oil pump fault post-processing strategy can be selected and executed according to different fault types, so as to ensure the lubrication condition of the vehicle gearbox and the driving safety of the vehicle as much as possible.

[0106] For example, for a dual-fuel pump vehicle, when a single fuel pump node is lost, a single fuel pump communication fault is determined; the post-processing strategy for the fuel pump fault is: the other fuel pump works independently, and the drive axle where the faulty fuel pump is located performs a first-level speed limit and torque limit. When the dual-fuel pump node is lost, a dual-fuel pump communication fault is determined; the post-processing strategy for the fuel pump fault is: the drive axle where the faulty fuel pump is located performs a second-level speed limit and torque limit, and the speed is limited to zero after a certain period of time. When the fuel pump address bit is suspended, an address bit suspension fault is determined; the post-processing strategy for the fuel pump fault is: the drive axle where the faulty fuel pump is located performs a first-level speed limit and torque limit.

[0107] For example, if the voltage / current / abnormality of the oil pump power supply circuit is detected, an overvoltage / undervoltage / overcurrent fault is determined according to the abnormal data type; the post-processing strategy for the oil pump fault is: if the fault can be self-repaired within the preset time, no action is required; if the fault cannot be self-recovered within the preset time, the faulty oil pump is controlled to stop running, and the first and second level speed and torque limits are respectively performed according to the number of oil pump stoppages. If it is detected that the oil pump does not respond to the target speed for more than a certain period of time, it is determined that a jamming fault occurs; the post-processing strategy for the oil pump fault is: the following control strategy is executed according to the jamming duration, if the oil pump is temporarily jammed multiple times within a certain period of time, no action is required; if the oil pump is continuously jammed, the first and second level speed and torque limits are respectively performed according to the number of oil pump jams. If it is detected that the difference between the target speed and the actual speed of the oil pump exceeds the calibrated speed difference, it is determined that the oil pump has an overload fault; the post-processing strategy for the oil pump fault is: control the oil pump to reduce power operation.

[0108] Of course, in actual application, the oil pump failure type and the corresponding oil pump failure post-processing strategy are not limited thereto, and those skilled in the art can design them according to actual needs.

[0109] Embodiment 5

[0110] Figure 5 This is a structural schematic diagram of a transmission oil pump control device provided in Example 5 of the present invention. The device can be used to control the transmission oil pump of a vehicle electric drive system, wherein the device can be implemented by software and / or hardware and is generally integrated on an electronic device.

[0111] like Figure 5 As shown, the control device of the transmission oil pump includes:

[0112] The vehicle status acquisition 100 is used to acquire the vehicle status; the vehicle status includes the vehicle start / stop status and the transmission temperature.

[0113] The oil pump control mode determination module 200 is used to determine the oil pump control mode according to the vehicle state.

[0114] The oil pump control strategy selection module 300 is used to select a corresponding oil pump control strategy according to the oil pump control mode.

[0115] The oil pump control module 400 is used to control the oil pump according to the oil pump control strategy.

[0116] The control device of the transmission oil pump provided in the embodiment of the present invention can control the oil pump according to the actual vehicle state, which can not only meet the lubricating oil flow requirements of various components of the transmission, but also reduce the energy consumption of the oil pump, which is beneficial to the control of the oil pump and realizes accurate oil supply and efficient heat dissipation of the transmission part.

[0117] Optionally, in a possible embodiment, the oil pump control mode determination module can be specifically used to: determine the first oil pump control mode when the vehicle is in a started but not driving state; the oil pump control strategy selection module can be specifically used to: select the first oil pump control strategy according to the first oil pump control mode; in the first oil pump control strategy, the oil pump operates intermittently; the oil pump control module can be specifically used to: intermittently control the oil pump operation according to the first oil pump control strategy.

[0118] Optionally, in a possible embodiment, the oil pump control module may also be used to control the intermittent start-up of the oil pump with a first duration as the time interval and a second duration as the operation maintenance duration; wherein the first duration and the second duration are determined based on bench tests.

[0119] Optionally, in a possible embodiment, the oil pump control mode determination module can also be used to: determine the second oil pump control mode when the vehicle is in a driving state; the oil pump control strategy selection module can also be used to: select the second oil pump control strategy according to the second oil pump control mode; in the second oil pump control strategy, the oil pump runs continuously, and the speed of the oil pump is related to the transmission temperature; the oil pump control module can also be used to: adjust the speed of the oil pump according to the second oil pump control strategy.

[0120] Optionally, in a possible embodiment, the vehicle state also includes the transmission output shaft speed and torque, and in the second oil pump control strategy, the oil pump speed is also related to the transmission output shaft speed and torque. The oil pump control strategy selection module includes a lubricating oil flow determination unit and a control strategy determination unit. The lubricating oil flow determination unit is used to determine the lubricating oil flow of the oil pump in the second oil pump control mode in combination with the transmission output shaft speed and torque; the control strategy determination unit is used to determine the second oil pump control strategy according to the transmission temperature and the lubricating oil flow of the oil pump.

[0121] Optionally, in a possible embodiment, the control device of the transmission oil pump may further include a speed verification module, which is used to obtain the actual speed of the oil pump when the transmission temperature is lower than the low temperature threshold, and determine the target speed of the oil pump corresponding to the current transmission temperature in the second oil pump control strategy. The oil pump control module may also be used to: when the difference between the target speed and the actual speed is within a preset difference range, continue to execute the second oil pump control strategy, and when the difference between the target speed and the actual speed exceeds the preset difference range, stop executing the second oil pump control strategy.

[0122] Optionally, in a possible embodiment, the control device of the transmission oil pump may further include a fault determination module and a fault post-processing module. The fault determination module is used to obtain the working state of the oil pump and determine whether the oil pump is faulty according to the working state of the oil pump; the fault post-processing module is used to select a corresponding oil pump fault post-processing strategy according to the fault type when the oil pump fails, and execute the oil pump fault post-processing strategy; the fault type includes communication fault and operation fault.

[0123] The above-mentioned transmission oil pump control device can execute the transmission oil pump control method provided by any embodiment of the present invention, and has all the corresponding technical features and corresponding beneficial effects of the execution method.

[0124] Embodiment 6

[0125] Embodiment 6 of the present invention provides an electronic device, comprising: one or more processors; a storage device for storing one or more programs; when the one or more programs are executed by one or more processors, the one or more processors implement a transmission oil pump control method as provided in any embodiment of the present invention.

[0126] The storage device in the electronic device is a computer-readable storage medium and can be used to store one or more programs, which can be software programs, computer executable programs and modules, such as program instructions / modules corresponding to the transmission oil pump control method provided in any embodiment of the present invention. The processor executes various functional applications and data processing of the electronic device by running the software programs, instructions and modules stored in the storage device, that is, realizing the transmission oil pump control method in the above method embodiment.

[0127] The storage device may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the device, etc. In addition, the storage device may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some instances, the storage device may further include a memory remotely arranged relative to the processor, and these remote memories may be connected to the device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0128] Embodiment 7

[0129] Embodiment 7 of the present invention provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, it is used to execute the control method of the transmission oil pump provided by any embodiment of the present invention.

[0130] The computer storage medium of the embodiment of the present invention may adopt any combination of one or more computer-readable media. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable CD-ROM, an optical storage device, a magnetic storage device, or any suitable combination of the above. The computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, device or device.

[0131] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, which carry computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to: electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0132] The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical cable, radio frequency (RF), etc., or any suitable combination of the above.

[0133] Computer program code for performing the operations of the present invention may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0134] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for controlling a transmission oil pump, characterized in that: include: Obtaining vehicle status; the vehicle status includes vehicle start / stop status and transmission temperature; determining an oil pump control mode according to the vehicle state; Selecting a corresponding oil pump control strategy according to the oil pump control mode; The oil pump is controlled according to the oil pump control strategy.

2. The control method of the transmission oil pump according to claim 1, characterized in that: Determining an oil pump control mode according to the vehicle state includes: When the vehicle is in a started but not running state, determining a first oil pump control mode; Selecting a corresponding oil pump control strategy according to the oil pump control mode includes: Selecting a first oil pump control strategy according to the first oil pump control mode; in the first oil pump control strategy, the oil pump operates intermittently; The oil pump is controlled according to the oil pump control strategy, including: The oil pump is intermittently controlled to operate according to the first oil pump control strategy.

3. The control method of the transmission oil pump according to claim 2, characterized in that: Intermittently controlling the oil pump to operate according to the first oil pump control strategy includes: The oil pump is controlled to start intermittently with a first duration as the time interval and a second duration as the operation maintenance duration; wherein the first duration and the second duration are determined according to bench tests.

4. The control method of the transmission oil pump according to claim 1, characterized in that: Determining an oil pump control mode according to the vehicle state includes: When the vehicle is in a driving state, determining a second oil pump control mode; Selecting a corresponding oil pump control strategy according to the oil pump control mode includes: selecting a second oil pump control strategy according to the second oil pump control mode; in the second oil pump control strategy, the oil pump runs continuously, and the speed of the oil pump is related to the temperature of the gearbox; The oil pump is controlled according to the oil pump control strategy, including: The rotation speed of the oil pump is adjusted according to the second oil pump control strategy.

5. The control method of the transmission oil pump according to claim 4, characterized in that: The vehicle state also includes the transmission output shaft speed and torque, and in the second oil pump control strategy, the oil pump speed is also related to the transmission output shaft speed and torque; Selecting a second oil pump control strategy according to the second oil pump control mode includes: In the second oil pump control mode, the lubricating oil flow rate of the oil pump is determined in combination with the speed and torque of the output shaft of the gearbox; The second oil pump control strategy is determined according to the transmission temperature and the lubricating oil flow of the oil pump.

6. The control method of the transmission oil pump according to claim 4, characterized in that: After selecting the second oil pump control strategy according to the second oil pump control mode, the method further includes: When the gearbox temperature is lower than a low temperature threshold, obtaining an actual speed of the oil pump, and determining a target speed of the oil pump corresponding to the current gearbox temperature in the second oil pump control strategy; When the difference between the target speed and the actual speed is within a preset difference range, the second oil pump control strategy continues to be executed; when the difference between the target speed and the actual speed exceeds the preset difference range, the second oil pump control strategy is stopped.

7. The control method of the transmission oil pump according to claim 1, characterized in that: The control method of the transmission oil pump further includes: Get the working status of the oil pump; determining whether the oil pump is faulty according to the working state of the oil pump; When the oil pump fails, a corresponding oil pump failure post-processing strategy is selected according to the failure type; the failure type includes communication failure and operation failure; Execute the oil pump failure post-processing strategy.

8. A control device for a transmission oil pump, characterized in that: include: Vehicle status acquisition, used to acquire vehicle status; the vehicle status includes vehicle start / stop status and gearbox temperature; An oil pump control mode determination module, used to determine an oil pump control mode according to the vehicle state; An oil pump control strategy selection module, used to select a corresponding oil pump control strategy according to the oil pump control mode; The oil pump control module is used to control the oil pump according to the oil pump control strategy.

9. An electronic device, characterized in that: include: one or more processors; A storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the transmission oil pump control method as described in any one of claims 1-7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the control method of the transmission oil pump as described in any one of claims 1-7 is implemented.

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