Transmission control method and system, vehicle and storage medium

Abstract

The invention provides a transmission control method and system, a vehicle and a storage medium, and relates to the technical field of vehicles. The method comprises the following steps: when an intelligent electronic oil pump of the transmission is in a working state, the intelligent electronic oil pump and an automatic transmission control unit respectively detect whether a communication fault occurs between the intelligent electronic oil pump and the automatic transmission control unit; if the intelligent electronic oil pump detects the communication fault, the intelligent electronic oil pump operates at a first preset rotating speed for a first preset duration; if the automatic transmission control unit detects the communication fault, the running state of an engine is obtained; and if the operation state of the engine is a stop state, the engine is controlled to be started within the first preset duration, so that a mechanical pump of the transmission works. The problem that the vehicle cannot operate normally due to the fact that the intelligent electronic oil pump stops rotating after the communication fault occurs between the intelligent electronic oil pump and the automatic transmission control unit can be solved, and therefore the stability of the vehicle is improved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a transmission control method, system, vehicle and storage medium. Background Art

[0002] In the vehicle's transmission system, the intelligent electronic oil pump is used to provide the transmission with oil to build up oil pressure and cool the lubricating oil.

[0003] The intelligent electronic oil pump generally communicates with the automatic transmission control unit (TCU) through the controller area network (CAN) bus. The TCU is responsible for calculating the oil demand according to the vehicle's operating conditions, and then sending a speed command to the intelligent electronic oil pump based on the oil demand. After receiving the speed command, the intelligent electronic oil pump operates at the target speed, and with the cooperation of the valve body in the hydraulic module, it realizes the function of providing oil pressure and cooling lubrication for the transmission.

[0004] In the related technology, when a communication failure occurs between the intelligent electronic oil pump and the TCU, the intelligent electronic oil pump cannot receive the speed command from the TCU and will stop running after a certain period of time, which will lead to problems such as failure to start the engine, failure to shift gears, and loss of cooling and lubrication of the transmission, forcing the vehicle to limit speed or stop. Summary of the invention

[0005] The embodiments of the present invention provide a transmission control method, system, vehicle and storage medium to solve the problem that the vehicle cannot operate normally due to the stop of the intelligent electronic oil pump after a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit, thereby improving the stability of the vehicle.

[0006] In a first aspect, an embodiment of the present invention provides a transmission control method, comprising:

[0007] When the intelligent electronic oil pump of the transmission is in working state, the intelligent electronic oil pump and the automatic transmission control unit respectively detect whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit;

[0008] If the intelligent electronic oil pump detects a communication failure, the intelligent electronic oil pump runs at a first preset speed for a first preset time;

[0009] If the automatic transmission control unit detects a communication failure, the operating state of the engine is obtained; if the operating state of the engine is a stopped state, the engine is controlled to start within the first preset time period to enable the mechanical pump of the transmission to work.

[0010] The intelligent electronic oil pump and the automatic transmission control unit detect the communication failure between them respectively. This two-way detection mechanism improves the reliability of fault detection. When a communication failure occurs, the intelligent electronic oil pump detects the communication failure and runs at a first preset speed for a first preset time. This ensures that even in the case of a communication failure, the oil pump can still maintain a certain degree of work, guarantee the basic lubrication and oil pressure requirements of the transmission, avoid serious damage to the transmission due to sudden interruption of oil supply due to communication failure, such as increased wear and even stuck of parts, and can provide support for starting the engine. At the same time, the automatic transmission control unit detects the communication failure and further obtains the operating status of the engine. If the engine is in a stopped state, the engine is controlled to start within the first preset time to make the mechanical pump of the transmission work. This reflects the intelligent coordination of the system, using the engine start to drive the mechanical pump to work, as a backup plan when the intelligent electronic oil pump may not work properly due to a communication failure. In this way, the normal operation of the transmission can be guaranteed to the greatest extent, the risk of the transmission stopping due to communication failure can be reduced, the stability and reliability of the entire power transmission system can be improved, the possibility of the vehicle breaking down due to a failure can be reduced, and the safety of vehicle driving and user experience can be improved.

[0011] In a possible implementation, after the intelligent electronic oil pump runs at a first preset speed for a first preset time, the method further includes:

[0012] The intelligent electronic oil pump is restarted at least once to eliminate the communication fault.

[0013] Communication failures are relatively common in intelligent electronic oil pumps. In many cases, they may be caused by temporary problems such as momentary electromagnetic interference and signal transmission conflicts. By restarting, the intelligent electronic oil pump can reset the internal communication circuits and software programs, clear possible erroneous instructions or cached data, and restore communication to normal. This is just like when you encounter network connection problems when using electronic devices (such as mobile phones and computers) in daily life, restarting the device can often solve the problem. It provides a simple and effective self-repair mechanism for communication failures, avoiding minor failures that cause the system to malfunction for a long time. At the same time, since the mechanical pump of the transmission is working, restarting the intelligent electronic oil pump will not affect the normal operation of the transmission. This embodiment has the ability to self-restart to solve communication failures, which makes the entire transmission oil supply system more resistant to communication failures and enhances the robustness of the system.

[0014] In a possible implementation, the intelligent electronic oil pump is restarted at least once to eliminate the communication fault, including:

[0015] After each restart of the intelligent electronic oil pump, detecting whether the communication fault is eliminated;

[0016] If the communication fault is not eliminated after the restart times reaches the preset times threshold, the intelligent electronic oil pump continues to run at the second preset speed;

[0017] Wherein, the second preset rotation speed is smaller than the first preset rotation speed.

[0018] Many communication failures may be sporadic, and multiple restarts increase the possibility of self-repair. After multiple restarts, if the communication failure is still not eliminated, the intelligent electronic oil pump continues to run at the second preset speed. This is to deal with the above-mentioned engine start failure. Even if the engine is stopped, the intelligent electronic oil pump can still provide oil to the transmission. This independent oil supply capability can provide necessary protection for the transmission in extreme situations.

[0019] In a possible implementation, after the intelligent electronic oil pump continuously runs at the second preset speed, the method further includes:

[0020] The intelligent electronic oil pump monitors the voltage of the low-voltage battery;

[0021] If the voltage of the low-voltage battery is lower than a preset voltage threshold and the duration of the voltage is lower than a second preset duration, the intelligent electronic oil pump stops working.

[0022] In order to prevent the vehicle from running out of power due to the continuous operation of the intelligent electronic oil pump, in this embodiment, the intelligent electronic oil pump will monitor the voltage of the low-voltage battery while running continuously at the second preset speed. When the voltage is lower than the preset voltage threshold and the duration reaches the second preset duration, the intelligent electronic oil pump will stop running to protect the battery and reserve power for the next vehicle start.

[0023] In a possible implementation, after controlling the engine to start, the method further includes:

[0024] The automatic transmission control unit generates an engine stop prohibition instruction;

[0025] The engine stop prohibition instruction is used to control the engine to maintain the working state when a preset type of engine stop instruction is received.

[0026] Considering that when the vehicle is actually running, there may be a need to shut down the engine after it is started, such as when the vehicle switches to pure electric mode. However, since the engine needs to remain in operation so that the mechanical pump of the transmission can work normally, the automatic transmission control unit can generate an engine stop prohibition command and send it to the vehicle controller. The purpose of this command is to control the engine to continue to work when a preset type of engine stop command is received.

[0027] There is a close coordination between the vehicle's engine, transmission and other subsystems. The engine stop command ensures that the coordinated work between the engine and transmission is not interrupted when facing a preset type of engine stop command. This helps maintain the stability of the vehicle's overall performance, allowing the vehicle to maintain good power output and driving status under various working conditions, and improve the driving experience.

[0028] In a possible implementation, after obtaining the operating status of the engine, the method further includes:

[0029] If the running state of the engine is the working state, the automatic transmission control unit generates an engine stop prohibition instruction;

[0030] The engine stop prohibition instruction is used to control the engine to maintain the working state when a preset type of engine stop instruction is received.

[0031] If the engine is already in working state, the step of starting the engine can be skipped. At the same time, considering that the engine may need to be shut down after it is started when the vehicle is actually running, such as when the vehicle switches to pure electric mode. However, since the engine needs to remain in working state so that the mechanical pump of the transmission can work normally, the automatic transmission control unit can generate an engine stop prohibition command and send it to the vehicle controller. The purpose of this command is to control the engine to continue to work when a preset type of engine stop command is received.

[0032] In a possible implementation, the automatic transmission control unit delays sleep upon receiving a sleep instruction; the intelligent electronic oil pump obtains the operating status of the automatic transmission control unit in real time;

[0033] The intelligent electronic oil pump detects whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit, including:

[0034] If the duration for which the intelligent electronic oil pump does not receive the communication signal from the automatic transmission control unit reaches a third preset duration, it is determined whether the latest acquired operation state of the automatic transmission control unit is a working state; if the operation state of the automatic transmission control unit is a working state, it is determined that a communication fault occurs; if the operation state of the automatic transmission control unit is a dormant state, it is determined that no communication fault occurs;

[0035] The automatic transmission control unit detects whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit, including:

[0036] If the time duration during which the automatic transmission control unit does not receive the communication signal from the intelligent electronic oil pump reaches a third preset time duration, it is determined that a communication failure occurs.

[0037] The automatic transmission control unit has a sleep state, which is a low-power mode when the vehicle is stationary for a long time or under specific conditions. It can reduce power consumption, extend battery life and maintain system stability. For example, after the vehicle has been parked for a long time or the engine has stopped, or when other control systems send signals indicating that the vehicle is stationary and no power transmission is required, it will enter sleep mode. In order to avoid misjudging the lack of communication between the two during sleep mode as a communication failure, the communication failure can be detected in the following way: the automatic transmission control unit delays sleep when receiving the sleep command, and the intelligent electronic oil pump obtains its operating status in real time. Intelligent electronic oil pump: If the duration of not receiving the communication signal of the automatic transmission control unit reaches the third preset duration, its previous operating status is judged. If it is working, it is judged to be a communication failure, and if it is sleeping, it is judged to be no fault. Automatic transmission control unit: If the duration of not receiving the communication signal of the intelligent electronic oil pump reaches the third preset duration, it is directly judged that a communication failure has occurred. In this way, misjudgment caused by the sleep of the automatic transmission control unit is avoided.

[0038] In a second aspect, an embodiment of the present invention provides a transmission control system, comprising:

[0039] An intelligent electronic oil pump, used to detect whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit when the intelligent electronic oil pump of the transmission is in a working state; if a communication failure is detected, control the intelligent electronic oil pump to operate at a first preset speed for a first preset time;

[0040] An automatic transmission control unit is used to detect whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit when the intelligent electronic oil pump of the transmission is in a working state; if a communication failure is detected, the operating state of the engine is obtained; if the operating state of the engine is a stopped state, the engine is controlled to start within the first preset time period to enable the mechanical pump of the transmission to work.

[0041] In a possible implementation, after the intelligent electronic oil pump runs at a first preset speed for a first preset time, the intelligent electronic oil pump is further used to:

[0042] The intelligent electronic oil pump is controlled to restart at least once to eliminate the communication fault.

[0043] In a possible implementation, the intelligent electronic oil pump is specifically used for:

[0044] After each restart of the intelligent electronic oil pump, detecting whether the communication fault is eliminated;

[0045] If the communication fault is not eliminated after the restart times reaches the preset times threshold, the intelligent electronic oil pump continues to run at the second preset speed;

[0046] Wherein, the second preset rotation speed is smaller than the first preset rotation speed.

[0047] In a possible implementation, after the intelligent electronic oil pump continuously runs at the second preset speed, the intelligent electronic oil pump is further used to:

[0048] The intelligent electronic oil pump monitors the voltage of the low-voltage battery;

[0049] If the voltage of the low-voltage battery is lower than a preset voltage threshold and the duration of the voltage is lower than a second preset duration, the intelligent electronic oil pump stops working.

[0050] In a possible implementation, after controlling the engine to start, the automatic transmission control unit is further configured to:

[0051] Controlling the automatic transmission control unit to generate an engine stop prohibition instruction;

[0052] The engine stop prohibition instruction is used to control the engine to maintain the working state when a preset type of engine stop instruction is received.

[0053] In a possible implementation, after acquiring the operating state of the engine, the automatic transmission control unit is further configured to:

[0054] If the running state of the engine is the working state, the automatic transmission control unit generates an engine stop prohibition instruction;

[0055] The engine stop prohibition instruction is used to control the engine to maintain the working state when a preset type of engine stop instruction is received.

[0056] In a possible implementation, the automatic transmission control unit delays sleep upon receiving a sleep instruction; the intelligent electronic oil pump obtains the operating status of the automatic transmission control unit in real time;

[0057] The intelligent electronic oil pump is specifically used for:

[0058] If the duration for which the intelligent electronic oil pump does not receive the communication signal from the automatic transmission control unit reaches a third preset duration, it is determined whether the latest acquired operation state of the automatic transmission control unit is a working state; if the operation state of the automatic transmission control unit is a working state, it is determined that a communication fault occurs; if the operation state of the automatic transmission control unit is a dormant state, it is determined that no communication fault occurs;

[0059] The automatic transmission control unit is specifically used for:

[0060] If the time duration during which the automatic transmission control unit does not receive the communication signal from the intelligent electronic oil pump reaches a third preset time duration, it is determined that a communication failure occurs.

[0061] In a third aspect, an embodiment of the present invention provides a vehicle, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the method in the first aspect or any possible implementation of the first aspect is implemented.

[0062] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it implements the method in the first aspect or any possible implementation of the first aspect.

[0063] In an embodiment of the present invention, when the intelligent electronic oil pump of the transmission is in a working state, the intelligent electronic oil pump and the automatic transmission control unit respectively detect whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit; if the intelligent electronic oil pump detects a communication failure, the intelligent electronic oil pump enters an automatic control mode, and the intelligent electronic oil pump runs at a first preset speed for a first preset time, with the purpose of providing support for starting the engine of the whole vehicle; at the same time, the automatic transmission control unit also detects a communication failure. At this time, if the running state of the engine is a stopped state, the automatic transmission controls the engine to start within the first preset time, so that the mechanical pump of the transmission works, replacing the intelligent electronic oil pump as the oil power source, ensuring that at least one oil pump of the vehicle works normally, thereby improving the stability of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 is an application scenario diagram of the transmission control method provided by an embodiment of the present invention;

[0065] Figure 2 The implementation process of the transmission control method provided by the embodiment of the present invention is Figure 1 ;

[0066] Figure 3 The implementation process of the transmission control method provided by the embodiment of the present invention is Figure 2 ;

[0067] Figure 4 The implementation process of the transmission control method provided by the embodiment of the present invention is Figure 3 ;

[0068] Figure 5 is a schematic structural diagram of a transmission control system provided by an embodiment of the present invention;

[0069] Figure 6 is a schematic diagram of a vehicle provided by an embodiment of the present invention;

[0070] in, Figure 1 The serial numbers are explained as follows: transmission (1), DC-DC converter (1-1), automatic transmission control unit (1-2), intelligent electronic oil pump (1-3), battery (1-4), hydraulic system solenoid valve (1-5), lubrication system (1-6), status signal KL15 (1-7), vehicle control unit (1-8), engine (1-9), mechanical pump (1-10), pressure system (1-11). DETAILED DESCRIPTION

[0071] The present application is described more clearly below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the effects of the present application, but are not intended to limit the present application in any form. It should be noted that, for those of ordinary skill in the art, several variations and improvements may be made without departing from the concept of the present application. These all fall within the scope of protection of the present application.

[0072] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0073] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0074] In the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0075] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0076] In addition, the “plurality” mentioned in the embodiments of the present application should be interpreted as two or more.

[0077] Figure 1 This is an application scenario diagram of the transmission control method provided in an embodiment of the present invention.

[0078] like Figure 1 As shown, in this embodiment, the hydraulic system of the transmission adopts a dual pump design of a mechanical pump (1-10) and an intelligent electronic oil pump (1-3). In different modes of the vehicle, the mechanical pump and the intelligent electronic oil pump can work together to provide oil for the transmission. For example, in the hybrid mode, the mechanical pump (1-10) takes the lead in providing oil for the hydraulic system, and the intelligent electronic oil pump (1-3) serves as an auxiliary oil pump. When the mechanical pump cannot provide enough oil, the intelligent electronic oil pump (1-3) rotates to supplement enough oil. In the pure electric mode, the mechanical pump (1-10) stops rotating, and the intelligent electronic oil pump (1-3) provides oil for the hydraulic system.

[0079] The transmission control method of this embodiment can be implemented through the cooperation of an automatic transmission control unit (1-2), an intelligent electronic oil pump (1-3), and a vehicle control unit (1-8).

[0080] The automatic transmission control unit (TCU) is the core control component of the transmission. It receives signals from various vehicle sensors (such as vehicle speed sensor, engine speed sensor, accelerator pedal position sensor, etc.) and communicates with other vehicle control units (such as engine control unit, vehicle control unit (1-8), etc.) to accurately control the transmission shift timing, shift logic and shift process to achieve smooth vehicle shifting and optimal power transmission, improve driving comfort and fuel economy. It also has fault diagnosis and processing functions, monitors the working status of the transmission, and diagnoses faults in the transmission system in real time. Once a fault is detected, the automatic transmission control unit will take corresponding measures, such as storing fault codes, limiting the working mode of the transmission (such as entering limp home mode) to prevent further damage, and remind the driver to make repairs in time.

[0081] The intelligent electronic oil pump (1-3) mainly communicates with the automatic transmission control unit through the CAN line. The automatic transmission control unit is responsible for calculating the oil demand according to the vehicle working condition requirements, and then sends a speed control instruction to the intelligent electronic oil pump (1-3) according to the oil demand. After receiving the control instruction, the intelligent electronic oil pump (1-3) operates according to the target speed, and with the cooperation of the solenoid valve (1-5) in the hydraulic system, it realizes the function of providing oil pressure and lubrication for the transmission. The solenoid valve is supplied with current by the host computer to realize the solenoid valve action and adjust the oil circuit pressure and flow. Specifically, the intelligent electronic oil pump in the pure electric mode mainly realizes two functions: the first is to provide oil for the pressure system (1-11) of the transmission to establish oil pressure. This oil pressure has the following two uses: the first use is for clutch engagement, transferring the torque of the motor to the engine, and realizing dynamic starting of the engine; the second use is for adjusting the position of the shift fork to realize gear switching; the second is to provide cooling and lubricating oil for the lubrication system (1-6) of the transmission to support motor heat dissipation and shaft gear lubrication. At the same time, the intelligent electronic oil pump (1-3) of this embodiment has its own processor and can automatically control the rotation speed.

[0082] The vehicle control unit (1-8) is the core control component of new energy vehicles such as electric vehicles and hybrid vehicles. It is equivalent to the "brain" of the vehicle and is responsible for coordinating and managing the work of various subsystems of the vehicle to ensure the safe, efficient and stable operation of the vehicle.

[0083] According to the transmission working logic described above, once a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit, the intelligent electronic oil pump cannot receive the speed command from the automatic transmission control unit and will stop operating after a certain period of time. In hybrid mode, the vehicle can still operate normally through the operation of the mechanical pump. In pure electric mode, it may cause problems such as dynamic engine start failure, gear shift failure, and loss of transmission cooling and lubrication, forcing the vehicle to limit speed or stop.

[0084] In order to solve the above problems, the embodiment of the present invention proposes a transmission control method. Figure 1 For application scenarios, refer to Figure 2 The transmission control method provided according to the exemplary embodiment of the present application is described. It should be noted that the above application scenarios are only shown to facilitate understanding of the spirit and principle of the present application, and the embodiments of the present application are not limited in this respect. On the contrary, the embodiments of the present application can be applied to any applicable scenario.

[0085] Combine the following Figure 2 As shown, the method of this embodiment is described in detail:

[0086] Step S201 , when the intelligent electronic oil pump of the transmission is in working state, the intelligent electronic oil pump and the automatic transmission control unit respectively detect whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit.

[0087] Generally, in hybrid mode and pure electric mode, where the intelligent electronic oil pump is required to work, the intelligent electronic oil pump of the vehicle transmission is in working state. In pure fuel mode, the vehicle relies on the mechanical pump to work, and the intelligent electronic oil pump does not work at this time.

[0088] Since the intelligent electronic oil pump communicates signals with the automatic transmission control unit in real time when it is working, the intelligent electronic oil pump and the automatic transmission control unit can respectively determine whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit based on whether they can currently receive each other's communication signals. For example, when the intelligent electronic oil pump cannot receive signals from the automatic transmission control unit for a period of time, it is considered that a communication failure occurs. Similarly, when the automatic transmission control unit cannot receive signals from the intelligent electronic oil pump for a period of time, it is considered that a communication failure occurs.

[0089] In some embodiments, the automatic transmission control unit has a dormant state. The dormant state refers to a low-power state that the automatic transmission control unit enters when the vehicle is stationary for a long time or under certain conditions, which is intended to reduce power consumption, extend battery life, and ensure system stability when the vehicle is not in operation. For example, when a vehicle is parked for a long time, the vehicle's electronic system will think that the vehicle is not in use, and the automatic transmission control unit may enter a dormant state at this time. After the engine stops running, the vehicle's power system no longer needs to be controlled in real time. In order to save power, the automatic transmission control unit will gradually enter a dormant state. Other control systems of the vehicle (such as the body control module, etc.) will send relevant signals to the automatic transmission control unit. When these signals indicate that the vehicle is stationary and does not require power transmission and other operations, the automatic transmission control unit will also be prompted to enter a dormant mode.

[0090] Considering that there is no communication between the intelligent electronic oil pump and the automatic transmission control unit in the dormant state, in order to avoid misjudging this situation as a communication failure, in a possible implementation, detecting whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit can also be implemented in the following way:

[0091] When receiving a sleep instruction, the automatic transmission control unit delays sleep; the intelligent electronic oil pump obtains the operating status of the automatic transmission control unit in real time.

[0092] For the intelligent electronic oil pump, if the time duration for which the intelligent electronic oil pump has not received the communication signal from the automatic transmission control unit reaches the third preset time duration (set to 3 seconds here), it is determined whether the operating status of the automatic transmission control unit most recently acquired is a working status; if the operating status of the automatic transmission control unit is a working status, it is determined that a communication failure has occurred; if the operating status of the automatic transmission control unit is a sleep status, it is determined that no communication failure has occurred.

[0093] For the automatic transmission control unit, it does not need to judge the sleep state. If the automatic transmission control unit does not receive the communication signal of the intelligent electronic oil pump for a third preset time (consistent with the intelligent electronic oil pump, set to 3 seconds), it is determined that a communication failure has occurred.

[0094] That is to say, this embodiment adds a KL15 state signal to characterize the operating state of the automatic transmission control unit: when KL15=OFF, the automatic transmission control unit enters the sleep timing, and after the timing is completed, the automatic transmission control unit enters the sleep state and no longer sends instructions to the intelligent electronic oil pump. The intelligent electronic oil pump enters the normal sleep strategy to reduce the static power consumption of the whole box; when KL15=ON, it is the normal communication state between the automatic transmission control unit and the intelligent electronic oil pump. If the automatic transmission control unit message timeout is found at the next moment, a communication fault can be determined. In this way, misjudgment caused by the sleep of the automatic transmission control unit is avoided.

[0095] Step S202: If the intelligent electronic oil pump detects a communication failure, the intelligent electronic oil pump runs at a first preset speed for a first preset time period.

[0096] Here, when the intelligent electronic oil pump detects that a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit, the intelligent electronic oil pump enters the automatic control mode and runs at a first preset speed for a first preset time. The purpose of this step is to provide oil support for starting the engine of the vehicle. The specific size of the first preset speed can be set according to actual needs, as long as the engine starting conditions are met. Exemplarily, this embodiment is set for the intelligent electronic oil pump to run at 1500rpm for 2 minutes.

[0097] Step S203, if the automatic transmission control unit detects a communication failure, the running state of the engine is obtained; if the running state of the engine is a stopped state, the engine is controlled to start within a first preset time length to enable the mechanical pump of the transmission to work.

[0098] A communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit. It is usually considered that the intelligent electronic oil pump has a communication failure. At this time, the intelligent electronic oil pump cannot communicate with the outside world, so the transmission of fault information can only be achieved by the automatic transmission control unit. Therefore, the automatic transmission control unit needs to synchronously detect the communication failure.

[0099] In hybrid mode, the engine is in working state, and the vehicle can still work normally through the operation of the mechanical pump. In pure electric mode, the engine is in stopped state. After the intelligent electronic oil pump stops working, it may cause dynamic engine start failure, gear shift failure, and transmission loss of cooling and lubrication problems, thereby forcing the vehicle to limit speed or stop. Therefore, in this embodiment, within the first preset time period when the intelligent electronic oil pump provides the first preset speed, the automatic transmission control unit starts the engine, or sends a start signal to the vehicle control unit to start the engine through the vehicle control unit. After the engine starts, the mechanical pump of the transmission works to replace the function of the intelligent electronic oil pump.

[0100] In an embodiment of the present invention, when the intelligent electronic oil pump of the transmission is in a working state, the intelligent electronic oil pump and the automatic transmission control unit respectively detect whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit; if the intelligent electronic oil pump detects a communication failure, the intelligent electronic oil pump enters an automatic control mode, and the intelligent electronic oil pump runs at a first preset speed for a first preset time, with the purpose of providing support for starting the engine of the whole vehicle; at the same time, the automatic transmission control unit also detects a communication failure. At this time, if the running state of the engine is a stopped state, the automatic transmission control unit controls the engine to start within the first preset time of 2 minutes, so that the mechanical pump of the transmission works, replacing the intelligent electronic oil pump as the oil power source, ensuring that at least one oil pump of the vehicle works normally, thereby improving the stability of the vehicle.

[0101] In this way, the normal operation of the transmission can be guaranteed to the greatest extent, the risk of transmission stopping working due to communication failure can be reduced, the stability and reliability of the entire power transmission system can be improved, the possibility of vehicle breakdown due to failure can be reduced, and the vehicle driving safety and user experience can be improved.

[0102] The above embodiment describes how to basically ensure vehicle safety when a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit. In the following embodiments, this embodiment further provides a strategy for eliminating the communication failure, and how to ensure vehicle safety when the engine fails to start in step S203, or when the failure still exists and the engine subsequently receives a stop command.

[0103] See also Figure 3 As shown, the steps of this embodiment include:

[0104] Step S301 , when the intelligent electronic oil pump of the transmission is in working state, the intelligent electronic oil pump and the automatic transmission control unit respectively detect whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit.

[0105] For the specific implementation of this step, please refer to the above Figure 2 Description in the examples.

[0106] If the intelligent electronic oil pump does not receive the control signal of the automatic transmission control unit for 3 seconds, the operating state of the automatic transmission control unit is determined according to the KL15 state signal obtained previously. If KL15 = ON, that is, the operating state of the automatic transmission control unit is in the working state, it is determined that a communication fault has occurred; if KL15 = OFF, that is, the operating state of the automatic transmission control unit is in the dormant state, it is determined that no communication fault has occurred.

[0107] The automatic transmission control unit will only make a judgment when it is in working condition. If it does not receive a feedback signal from the intelligent electronic oil pump for 3 seconds, it will be determined that a communication failure has occurred.

[0108] Step S302: If the intelligent electronic oil pump detects a communication failure, the intelligent electronic oil pump runs at a first preset speed for a first preset time period.

[0109] For the specific implementation of this step, please refer to the above Figure 2 The description in the embodiment shows that the intelligent electronic oil pump can run at 1500 rpm for 2 minutes to support the engine start of the vehicle.

[0110] Step S303, if the automatic transmission control unit detects a communication failure, the running state of the engine is obtained; if the running state of the engine is a stopped state, the engine is controlled to start within a first preset time period to enable the mechanical pump of the transmission to work.

[0111] For the specific implementation of this step, please refer to the above Figure 2 The description in the embodiment is that the automatic transmission control unit controls the engine to start within the first preset time of 2 minutes, so that the mechanical pump of the transmission works, replacing the intelligent electronic oil pump as the oil power source.

[0112] In some embodiments, considering that when the vehicle is actually running, there may be a need to shut down the engine after it is started, such as when the vehicle switches to pure electric mode. However, since the engine needs to remain in operation so that the mechanical pump of the transmission can operate normally, the automatic transmission control unit can generate an engine stop prohibition instruction and send it to the vehicle controller. The purpose of this instruction is to control the engine to continue to operate when a preset type of engine stop instruction is received.

[0113] Based on this idea, if the engine is currently in working state, the automatic transmission control unit can also generate an engine prohibition command, which can control the engine to maintain the working state when receiving a preset type of engine stop command.

[0114] There is a close coordination between the vehicle's engine, transmission and other subsystems. The engine stop command ensures that the coordinated work between the engine and transmission is not interrupted when facing a preset type of engine stop command. This helps maintain the stability of the vehicle's overall performance, allowing the vehicle to maintain good power output and driving status under various working conditions, and improve the driving experience.

[0115] Step S304: After the intelligent electronic oil pump runs at the first preset speed for a first preset time, the intelligent electronic oil pump restarts at least once to eliminate the communication fault.

[0116] Communication failures are common in smart electronic oil pumps. In many cases, they may be caused by temporary problems such as momentary electromagnetic interference and signal transmission conflicts. By restarting, the smart electronic oil pump can reset the internal communication circuits and software programs, clear possible erroneous instructions or cached data, and restore communication to normal. This is just like when you encounter network connection problems when using electronic devices (such as mobile phones and computers) in daily life, restarting the device can often solve the problem. It provides a simple and effective self-repair mechanism for communication failures, avoiding minor failures that cause the system to malfunction for a long time. If the communication failure is eliminated after restarting, the vehicle can control the speed of the smart electronic oil pump through the automatic transmission control unit. This embodiment has the ability to self-restart to solve communication failures, making the entire transmission oil supply system more resistant to communication failures and enhancing the robustness of the system.

[0117] At the same time, since the mechanical pump of the transmission is working, restarting the intelligent electronic oil pump will not affect the normal operation of the transmission. Since the mechanical pump is an oil pump driven by the input shaft of the transmission, its operating state generally follows the engine, so this embodiment does not limit the subsequent operating state of the mechanical pump, that is, after the intelligent electronic oil pump resumes communication, the mechanical pump can be stopped or kept working. At this time, the intelligent electronic oil pump can assist and cooperate with the mechanical pump.

[0118] Step S305 , after each restart of the intelligent electronic oil pump, it is detected whether the communication fault is eliminated; if the communication fault is not eliminated after the restart times reaches a preset threshold, the intelligent electronic oil pump continues to run at a second preset speed.

[0119] This step is mainly used to deal with the situation where the engine starts fail in step S303.

[0120] The automatic transmission control unit will try to start the engine multiple times within the first preset time (2 minutes), and 2 minutes is usually enough to complete the engine start. To avoid the problem of being unable to supply oil to the transmission after the engine fails to start, in this embodiment, after the 2 minutes, the intelligent electronic oil pump will run at a speed of 1000 rpm. If the engine is in working state at this time, the intelligent electronic oil pump can assist the mechanical pump in working; if the engine is in a stopped state, the intelligent electronic oil pump can still provide oil to the transmission, which greatly improves the stability of the transmission.

[0121] In addition, before each restart, the smart electronic oil pump can run at 1000 rpm for 1 minute to serve as a transition.

[0122] Step S306, after the intelligent electronic oil pump continuously runs at the second preset speed, the intelligent electronic oil pump monitors the voltage of the low-voltage battery; if the voltage of the low-voltage battery is less than the preset voltage threshold and the duration reaches the second preset duration, the intelligent electronic oil pump stops working.

[0123] When the intelligent electronic oil pump continues to operate at a speed of 1000rpm, it loses contact with the automatic transmission control unit and lacks stop logic. In order to prevent the continuous operation of the intelligent electronic oil pump from causing the vehicle to lose power, in this embodiment, the intelligent electronic oil pump will monitor the low-voltage battery voltage while running at a speed of 1000rpm. When the voltage is lower than 11.5V and this state lasts for 10 seconds, the intelligent electronic oil pump will stop running and clear the relevant flag bits, and the strategy ends. The 11.5V voltage set in this embodiment can meet the requirements of the next vehicle start. However, it should be noted that the voltage threshold here can be designed according to actual needs, and this embodiment does not make specific limitations on this.

[0124] An embodiment of the present invention proposes a method for ensuring the function of a transmission after an intelligent electronic oil pump loses communication. By improving the control software of the intelligent electronic oil pump, the scenario of lost communication is identified, and the intelligent electronic oil pump is self-driven in this scenario. After multiple attempts to restore communication fail, the intelligent electronic oil pump can output a stable speed to support the normal function of the transmission.

[0125] Figure 4 This is a detailed implementation flow chart of the transmission control method provided by an embodiment of the present invention, which mainly includes:

[0126] First, when the intelligent electronic oil pump of the transmission is in working state, the step of "the intelligent electronic oil pump and the automatic transmission control unit respectively detect whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit" is executed.

[0127] The intelligent electronic oil pump continuously monitors the signal sent by the TCU. When it recognizes that the event of sequence number (2) has occurred, that is, no signal from the TCU has been received for 3 seconds, it can enter the judgment of sequence number (3).

[0128] In sequence number (3), the step of "if the intelligent electronic oil pump does not receive the communication signal from the automatic transmission control unit for a third preset time period, then determine whether the latest acquired operating state of the automatic transmission control unit is a working state; if the operating state of the automatic transmission control unit is a working state, then determine that a communication fault has occurred; if the operating state of the automatic transmission control unit is a dormant state, then determine that no communication fault has occurred" is executed, that is: add a KL15 status signal to characterize the operating state of the TCU: when KL15 = OFF, the TCU enters a dormant timing, and after the timing is completed, the TCU enters a dormant state and no longer sends instructions to the intelligent electronic oil pump. The intelligent electronic oil pump enters a normal dormant strategy (i.e., enters step number (4)) to reduce the static power consumption of the entire box; when KL15 = ON, it is a normal communication state between the TCU and the intelligent electronic oil pump, and a communication fault can be determined. When the condition of sequence number (3) is met, the step of "if the intelligent electronic oil pump detects a communication fault, the intelligent electronic oil pump runs at a first preset speed for a first preset time" is executed, that is, entering sequence number (5), the intelligent electronic oil pump starts the automatic control mode and runs at 1500 rpm for 2 minutes. The purpose of this step is to support the vehicle to start the engine.

[0129] At the same time, the TCU continuously monitors the signal sent by the intelligent electronic oil pump. Referring to the sequence numbers (12) to (16) in the figure, after the TCU recognizes that a communication fault has occurred (the judgment condition is: the TCU does not receive the signal from the intelligent electronic oil pump for 3 seconds), it executes the steps of "if the automatic transmission control unit detects a communication fault, the engine's operating state is obtained; if the engine's operating state is stopped, the engine is controlled to start within the first preset time length so that the transmission's mechanical pump works". The TCU will send an engine start request to the vehicle controller and control the valve body to execute the engine start action. After the engine is started, the TCU can also send an engine stop prohibition command to the vehicle controller to keep the engine in a consistent working state so that the transmission's mechanical pump works normally.

[0130] After the intelligent electronic oil pump has run at 1500 rpm for 2 minutes, the intelligent electronic oil pump can execute the step of "the intelligent electronic oil pump restarts at least once to eliminate the communication failure", that is, sequence numbers (6) to (8). The intelligent electronic oil pump is forced to restart 3 times to try to restore communication.

[0131] After completing three restarts, in order to avoid engine start failure resulting in no oil in the transmission, the step of "If the communication fault is not eliminated after the number of restarts reaches the preset threshold, the intelligent electronic oil pump continues to run at the second preset speed" is executed, and the intelligent electronic oil pump will continue to run at 1000rpm.

[0132] At the same time, in order to prevent the continuous operation of the intelligent electronic oil pump and cause the vehicle to run out of power, the intelligent electronic oil pump, while running continuously at the second preset speed, also executes the step of "the intelligent electronic oil pump monitors the voltage of the low-voltage battery; if the voltage of the low-voltage battery is less than the preset voltage threshold and the duration reaches the second preset duration, the intelligent electronic oil pump stops working", that is, monitors the low-voltage battery voltage. When the voltage is less than 11.5V and lasts for 10s, the intelligent electronic oil pump stops running and clears the relevant flags to protect the battery. At the same time, it can reserve power for the next time the vehicle is started, and the strategy ends here.

[0133] The embodiment of the present invention proposes a method for ensuring the function of the transmission after the intelligent electronic oil pump loses communication. By improving the control software of the intelligent electronic oil pump, the scene of lost communication is identified, and the intelligent electronic oil pump is self-driven in this scene. After multiple attempts to restore communication have failed, the intelligent electronic oil pump can output a stable speed to support the normal function of the transmission. The main contents include: (1) adding KL15 signal transmission to identify the scene of lost communication; (2) designing a judgment strategy for determining the scene of lost communication; (3) when it is judged that the lost communication is established, the intelligent electronic oil pump self-drives to maintain a high speed (1500rpm) for 2 minutes, supports the whole vehicle to start the engine, and replaces the mechanical pump as the oil power source; (4) the intelligent electronic oil pump software is designed to be reactivated multiple times to try to restore communication; (5) if the communication failure still exists, the intelligent electronic pump maintains a fixed speed to provide oil to the whole tank when the engine fails to start; (6) when the low-voltage battery voltage reaches a predetermined value, the intelligent electronic oil pump stops running to prevent the vehicle from running out of power.

[0134] By designing a strategy to force the intelligent electronic oil pump to restart and try to recover and keep running for a long time after a communication failure, the problem of failure to dynamically start the engine of the whole vehicle caused by the stoppage of the intelligent electronic oil pump after a communication failure can be solved. The transmission and the whole vehicle can operate normally, improving the stability of the vehicle.

[0135] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0136] The following is a system embodiment of the present invention. For details not described in detail therein, reference may be made to the corresponding method embodiment described above.

[0137] Figure 5 The structure diagram of the transmission control system provided by the embodiment of the present invention is shown. For the convenience of description, only the part related to the embodiment of the present invention is shown, which is described in detail as follows:

[0138] like Figure 5 As shown, the transmission control system 50 includes:

[0139] The intelligent electronic oil pump 51 is arranged on the intelligent electronic oil pump side and is used to detect whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit when the intelligent electronic oil pump of the transmission is in a working state; if a communication failure is detected, the intelligent electronic oil pump is controlled to run at a first preset speed for a first preset time.

[0140] The automatic transmission control unit 52 is arranged on the automatic transmission control unit side, and is used to detect whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit when the intelligent electronic oil pump of the transmission is in a working state; if a communication failure is detected, the operating state of the engine is obtained; if the operating state of the engine is a stopped state, the engine is controlled to start within a first preset time period to make the mechanical pump of the transmission work.

[0141] In a possible implementation, after the intelligent electronic oil pump runs at the first preset speed for a first preset time, the intelligent electronic oil pump 51 is further used to:

[0142] Control the intelligent electronic oil pump to restart at least once to eliminate the communication fault.

[0143] In a possible implementation, the intelligent electronic oil pump 51 is specifically used for:

[0144] After each restart of the intelligent electronic oil pump, check whether the communication fault has been eliminated;

[0145] If the communication fault is not eliminated after the restart times reaches the preset times threshold, the intelligent electronic oil pump continues to run at the second preset speed;

[0146] The second preset rotation speed is smaller than the first preset rotation speed.

[0147] In a possible implementation, after the intelligent electronic oil pump continuously runs at the second preset speed, the intelligent electronic oil pump 51 is further used to:

[0148] The intelligent electronic oil pump monitors the voltage of the low-voltage battery;

[0149] If the voltage of the low-voltage battery is lower than a preset voltage threshold and lasts for a second preset time, the intelligent electronic oil pump stops working.

[0150] In a possible implementation, after controlling the engine to start, the automatic transmission control unit 52 is further configured to:

[0151] Controlling the automatic transmission control unit to generate an engine stop prohibition instruction;

[0152] The engine stop command is used to control the engine to remain in the working state when a preset type of engine stop command is received.

[0153] In a possible implementation, after acquiring the operating state of the engine, the automatic transmission control unit 52 is further configured to:

[0154] If the running state of the engine is the working state, the automatic transmission control unit generates an engine stop prohibition instruction;

[0155] The engine stop command is used to control the engine to remain in the working state when a preset type of engine stop command is received.

[0156] In a possible implementation, the automatic transmission control unit delays sleep upon receiving a sleep instruction; the intelligent electronic oil pump obtains the operating status of the automatic transmission control unit in real time;

[0157] The intelligent electronic oil pump 51 is specifically used for:

[0158] If the duration for which the intelligent electronic oil pump does not receive the communication signal from the automatic transmission control unit reaches a third preset duration, it is determined whether the latest acquired operation state of the automatic transmission control unit is a working state; if the operation state of the automatic transmission control unit is a working state, it is determined that a communication fault occurs; if the operation state of the automatic transmission control unit is a dormant state, it is determined that no communication fault occurs;

[0159] The automatic transmission control unit 52 is specifically used for:

[0160] If the time duration during which the automatic transmission control unit does not receive the communication signal from the intelligent electronic oil pump reaches a third preset time duration, it is determined that a communication failure occurs.

[0161] In an embodiment of the present invention, when the intelligent electronic oil pump of the transmission is in a working state, the intelligent electronic oil pump and the automatic transmission control unit respectively detect whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit; if the intelligent electronic oil pump detects a communication failure, the intelligent electronic oil pump enters an automatic control mode, and the intelligent electronic oil pump runs at a first preset speed for a first preset time, with the purpose of providing support for starting the engine of the whole vehicle; at the same time, the automatic transmission control unit also detects a communication failure. At this time, if the running state of the engine is a stopped state, the automatic transmission control unit controls the engine to start within the first preset time of 2 minutes, so that the mechanical pump of the transmission works, replacing the intelligent electronic oil pump as the oil power source, ensuring that at least one oil pump of the vehicle works normally, thereby improving the stability of the vehicle.

[0162] Figure 6 Schematic diagram of a vehicle provided by an embodiment of the present invention. Figure 6 As shown, the vehicle 6 of this embodiment includes: a processor 60 and a memory 61. The memory 61 stores a computer program 62. When the processor 60 executes the computer program 62, the steps in the above-mentioned various method embodiments are implemented. For example:

[0163] The intelligent electronic oil pump 51 is used to detect whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit when the intelligent electronic oil pump of the transmission is in working state; if a communication failure is detected, the intelligent electronic oil pump is controlled to run at a first preset speed for a first preset time.

[0164] The automatic transmission control unit 52 is used to detect whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit when the intelligent electronic oil pump of the transmission is in a working state; if a communication failure is detected, the operating state of the engine is obtained; if the operating state of the engine is a stopped state, the engine is controlled to start within a first preset time period to enable the mechanical pump of the transmission to work.

[0165] In an embodiment of the present invention, when the intelligent electronic oil pump of the transmission is in a working state, the intelligent electronic oil pump and the automatic transmission control unit respectively detect whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit; if the intelligent electronic oil pump detects a communication failure, the intelligent electronic oil pump enters an automatic control mode, and the intelligent electronic oil pump runs at a first preset speed for a first preset time, with the purpose of providing support for starting the engine of the whole vehicle; at the same time, the automatic transmission control unit also detects a communication failure. At this time, if the running state of the engine is a stopped state, the automatic transmission controls the engine to start within the first preset time, so that the mechanical pump of the transmission works, replacing the intelligent electronic oil pump as the oil power source, ensuring that at least one oil pump of the vehicle works normally, thereby improving the stability of the vehicle.

[0166] Exemplarily, the computer program 62 may be divided into one or more modules / units, which are stored in the memory 61 and executed by the processor 60 to implement the present invention. The one or more modules / units may be a series of computer program instruction segments capable of implementing specific functions, which are used to describe the execution process of the computer program 62 in the vehicle 6.

[0167] The vehicle 6 may include, but is not limited to, a processor 60 and a memory 61. Those skilled in the art will appreciate that Figure 6 It is only an example of vehicle 6 and does not constitute a limitation of vehicle 6. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, vehicle 6 may also include input and output devices, network access devices, buses, etc.

[0168] The processor 60 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0169] The memory 61 may be an internal storage unit of the vehicle 6, such as a hard disk or memory of the vehicle 6. The memory 61 may also be an external storage device of the vehicle 6, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the vehicle 6. Further, the memory 61 may also include both an internal storage unit and an external storage device of the vehicle 6. The memory 61 is used to store the computer program 62 and other programs and data required by the vehicle 6. The memory 61 may also be used to temporarily store data that has been output or is to be output.

[0170] For the convenience and simplicity of description, only the division of the above functional modules / units is used as an example for illustration. In actual applications, the above functions can be assigned to different functional modules / units as needed. The above modules / units can be implemented in the form of hardware, software, or a combination of hardware and software.

[0171] The embodiment of the present invention further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the methods in the above method embodiments are implemented.

[0172] The computer program includes computer program code, which may be in source code form, object code form, executable file or some intermediate form, etc. Computer readable media may include: any entity or device capable of carrying computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium, etc.

[0173] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. If there is no special explanation and logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other. The technical features in different embodiments can be combined to form a new embodiment according to their internal logical relationship.

[0174] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A transmission control method, characterized in that: include: When the intelligent electronic oil pump of the transmission is in working state, the intelligent electronic oil pump and the automatic transmission control unit respectively detect whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit; If the intelligent electronic oil pump detects a communication failure, the intelligent electronic oil pump runs at a first preset speed for a first preset time; If the automatic transmission control unit detects a communication failure, the operating state of the engine is obtained; if the operating state of the engine is a stopped state, the engine is controlled to start within the first preset time period to enable the mechanical pump of the transmission to work.

2. The transmission control method according to claim 1, characterized in that: After the intelligent electronic oil pump runs at a first preset speed for a first preset time, the method further includes: The intelligent electronic oil pump is restarted at least once to eliminate the communication fault.

3. The transmission control method according to claim 2, characterized in that: The intelligent electronic oil pump is restarted at least once to eliminate the communication fault, including: After each restart of the intelligent electronic oil pump, detecting whether the communication fault is eliminated; If the communication fault is not eliminated after the restart times reaches the preset times threshold, the intelligent electronic oil pump continues to run at the second preset speed; Wherein, the second preset rotation speed is less than the first preset rotation speed.

4. The transmission control method according to claim 3, characterized in that: After the intelligent electronic oil pump continues to run at the second preset speed, the method further includes: The intelligent electronic oil pump monitors the voltage of the low-voltage battery; If the voltage of the low-voltage battery is lower than a preset voltage threshold and the duration of the voltage is lower than a second preset duration, the intelligent electronic oil pump stops working.

5. The transmission control method according to claim 1, characterized in that: After controlling the engine to start, the method further includes: The automatic transmission control unit generates an engine stop prohibition instruction; The engine stop prohibition instruction is used to control the engine to maintain a working state when a preset type of engine stop instruction is received.

6. The transmission control method according to claim 1, characterized in that: After obtaining the running status of the engine, it also includes: If the running state of the engine is the working state, the automatic transmission control unit generates an engine stop prohibition instruction; The engine stop prohibition instruction is used to control the engine to maintain a working state when a preset type of engine stop instruction is received.

7. The transmission control method according to any one of claims 1 to 6, characterized in that: The automatic transmission control unit delays sleep upon receiving a sleep instruction; the intelligent electronic oil pump obtains the operating status of the automatic transmission control unit in real time; The intelligent electronic oil pump detects whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit, including: If the duration for which the intelligent electronic oil pump does not receive the communication signal from the automatic transmission control unit reaches a third preset duration, it is determined whether the latest acquired operation state of the automatic transmission control unit is a working state; if the operation state of the automatic transmission control unit is a working state, it is determined that a communication fault occurs; if the operation state of the automatic transmission control unit is a dormant state, it is determined that no communication fault occurs; The automatic transmission control unit detects whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit, including: If the time duration during which the automatic transmission control unit does not receive the communication signal from the intelligent electronic oil pump reaches a third preset time duration, it is determined that a communication failure occurs.

8. A transmission control system, characterized in that: include: An intelligent electronic oil pump, used to detect whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit when the intelligent electronic oil pump of the transmission is in a working state; if a communication failure is detected, control the intelligent electronic oil pump to operate at a first preset speed for a first preset time; An automatic transmission control unit is used to detect whether a communication failure occurs between the intelligent electronic oil pump and the automatic transmission control unit when the intelligent electronic oil pump of the transmission is in a working state; if a communication failure is detected, the operating state of the engine is obtained; if the operating state of the engine is a stopped state, the engine is controlled to start within the first preset time period to enable the mechanical pump of the transmission to work.

9. A vehicle, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements the method according to any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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