A vehicle start-up control method and device

Abstract

The application provides a vehicle starting control method and device. A TCM collects sensing signals of sensors of a vehicle; determines a vehicle starting type as one of parallel starting, engine direct drive starting, pure electric sliding friction starting and pure electric starting according to the sensing signals of the sensors; and then controls the mode clutch and the starting clutch jointly according to the starting type by using a control strategy corresponding to the determined starting type. The TCM controls the double clutches step by step, and different double clutch coordination control strategies are adopted for different starting types from the perspective of the vehicle starting type, so that the problem that the service life of a single clutch is short due to a long sliding friction time and the problem of insufficient safety caused by the simultaneous control of the double clutches by the TCU in the existing vehicle starting control method can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the automatic control technology of automobile, and in particular to a vehicle starting control method and device. BACKGROUND

[0002] The hybrid double clutch automatic transmission has the advantages of high mechanical efficiency of traditional double clutch automatic transmission, no power interruption during gear shifting, etc., and integrates a power motor in the odd shaft, which can realize two different driving modes of pure electric driving and hybrid power driving of the whole vehicle, and has very good development prospects at the present stage. In order to improve the stability of vehicle starting and ensure the driving experience of the driver, starting control becomes an important work in the development of control strategy of hybrid double clutch automatic transmission.

[0003] The EDU hybrid system is the most mature and representative hybrid system so far, and its hybrid double clutch automatic transmission is composed of an engine and P1 and P2 two motors, and connected through C1 and C2 two clutches and a plurality of gear shifting gears and other components. Among them, the P1 motor is mainly used for power generation and adjusting the engine speed, and the P2 motor is mainly used for driving the vehicle, the C1 clutch controls the engine to access the whole system, and the C2 clutch is in a closed state for a long time, and is mainly used to access the power of the P2 motor to the system.

[0004] In the EDU hybrid system, since the automatic transmission control unit TCU controls the C1 clutch while the C2 clutch is in a closed state, there is a problem of insufficient starting safety in severe working conditions. And since the C2 clutch is in a closed state for a long time, the whole hybrid double clutch automatic transmission still bears the friction by the C1 clutch alone, which does not change the status quo of short service life of the C1 clutch. SUMMARY

[0005] The present application provides a vehicle starting control method and device to solve the problem of insufficient safety caused by the TCU controlling the double clutch at the same time in the existing vehicle starting control method, which only considers the starting process stage as the research angle.

[0006] In one aspect, the present application provides a vehicle starting control method, comprising:

[0007] Collecting sensing signals of sensors of the vehicle;

[0008] According to the sensing signals of the sensors, determining the starting type of the vehicle, and the determined starting type is one of parallel starting, engine direct drive starting, pure electric friction starting and pure electric starting;

[0009] Adopt a control strategy corresponding to the determined starting type to jointly control the mode clutch and the starting clutch.

[0010] In another aspect, the application provides a vehicle starting control device, comprising:

[0011] A collection module configured to collect sensing signals of sensors of the vehicle.

[0012] An analysis module configured to determine a starting type of the vehicle according to the sensing signals of the sensors, the determined starting type being one of parallel starting, engine direct drive starting, pure electric sliding friction starting, and pure electric starting.

[0013] A control module configured to adopt a control strategy corresponding to the determined starting type to jointly control the mode clutch and the starting clutch.

[0014] In yet another aspect, the application provides an electronic device, comprising a processor and a memory connected to the processor in communication.

[0015] The memory stores computer execution instructions.

[0016] The processor executes the computer execution instructions stored in the memory to implement the method as described above.

[0017] In a final aspect, the application provides a computer readable storage medium, the computer readable storage medium storing computer execution instructions, the computer execution instructions being executed by a processor to implement the vehicle starting control method as described above.

[0018] The vehicle starting control method and device provided by the application collect sensing signals of sensors of the vehicle, determine a starting type of the vehicle according to the sensing signals of the sensors, the determined starting type being one of parallel starting, engine direct drive starting, pure electric sliding friction starting, and pure electric starting, and adopt a control strategy corresponding to the determined starting type to jointly control the mode clutch and the starting clutch, thereby solving the problem that only the starting process stage is considered as a research angle in the existing vehicle starting control method and the problem of insufficient safety caused by the TCU simultaneously controlling the double clutches. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and serve to explain the principles of the application, together with the description.

[0020] Figure 1 A vehicle architecture diagram based on which the embodiments of the application are implemented;

[0021] Figure 2A flowchart of a vehicle starting control method provided by an embodiment of the present application is shown in the figure;

[0022] Figure 3 A flowchart of a vehicle starting control method provided by an embodiment of the present application is shown in the figure Figure Two ;

[0023] Figure 4 A signaling interaction diagram of a vehicle starting control method provided by an embodiment of the present application is shown in the figure;

[0024] Figure 5 A flowchart of a double clutch coordination control in a parallel starting type provided by an embodiment of the present application is shown in the figure;

[0025] Figure 6 A signaling interaction diagram of a double clutch coordination control in a parallel starting type provided by an embodiment of the present application is shown in the figure;

[0026] Figure 7 A flowchart of a double clutch coordination control in an engine direct drive starting type provided by an embodiment of the present application is shown in the figure;

[0027] Figure 8 A signaling interaction diagram of a double clutch coordination control in an engine direct drive starting type provided by an embodiment of the present application is shown in the figure;

[0028] Figure 9 A flowchart of a double clutch coordination control in a pure electric sliding friction starting type provided by an embodiment of the present application is shown in the figure;

[0029] Figure 10 A signaling interaction diagram of a double clutch coordination control in a pure electric sliding friction starting type provided by an embodiment of the present application is shown in the figure;

[0030] Figure 11 A flowchart of a double clutch coordination control in a pure electric starting type provided by an embodiment of the present application is shown in the figure;

[0031] Figure 12 A signaling interaction diagram of a double clutch coordination control in a pure electric starting type provided by an embodiment of the present application is shown in the figure;

[0032] Figure 13 A structural block diagram of a vehicle starting control device provided by an embodiment of the present application is shown in the figure;

[0033] Figure 14 A structural diagram of an electronic device provided by an embodiment of the present application is shown in the figure.

[0034] The above figures have shown the explicit embodiments of the present application, which will be described in more detail hereinafter. These figures and textual descriptions are not intended to limit the scope of the concept of the present application by any means, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0035] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0036] Hybrid dual-clutch automatic transmissions (DCLs) possess the advantages of traditional DCLs, such as high mechanical efficiency and seamless power shifting. They also enable both pure electric and hybrid drive, making them a promising technology with excellent future prospects. The EDU hybrid system is currently the most mature and representative hybrid system. Its DCL consists of an engine and two electric motors (P1 and P2), connected by two clutches (C1 and C2) and several gears. The P1 motor primarily generates electricity and adjusts engine speed, while the P2 motor drives the vehicle. The C1 clutch controls the engine's engagement with the system, while the C2 clutch remains closed, primarily used to supply power from the P2 motor. However, in the EDU system, the automatic transmission control unit (TCU) simultaneously controls the C1 clutch while keeping the C2 clutch closed, leading to insufficient starting safety under harsh conditions. Furthermore, because the C2 clutch is constantly closed, the slippage of the entire DCL is still borne solely by the C1 clutch, perpetuating the short lifespan of the C1 clutch.

[0037] Figure 1 This is a schematic diagram of a vehicle architecture upon which the embodiments of this application are based. See also: Figure 1 As shown, the vehicle architecture may specifically include: engine compartment 101, starting clutch 102, and TCM transmission controller 103.

[0038] The engine compartment 101 converts other forms of energy into mechanical energy to power the vehicle's starting mechanism. The engine compartment 101 includes an engine, a mode clutch, a power battery, an inverter, and a drive motor. The engine is directly connected to the mode clutch; the engine's output shaft is the mode clutch's input shaft, and power is transmitted to the TCM transmission controller 103 via the mode clutch's output shaft. The drive motor utilizes the power battery to convert electrical energy into mechanical energy via the inverter, and also transmits power to the TCM transmission controller 103 via the mode clutch's output shaft.

[0039] The starting clutch 102 is located between the engine compartment 101 and the TCM gearbox controller 103, the output shaft of the starting clutch 102 is the input shaft of the TCM gearbox controller 103, and the starting clutch 102 can gradually engage the engine compartment 101 and the TCM gearbox controller 103, thereby ensuring smooth starting of the vehicle.

[0040] It can be understood that, Figure 1 Only the starting clutch 102 independent of the TCM gearbox controller 103 is given, and in actual application, the starting clutch 102 can also be any clutch in the TCM gearbox controller 103, which is not limited here.

[0041] The TCM gearbox controller 103 can automatically shift gears according to the speed change of the vehicle, which can be described as the brain of the vehicle. The TCM gearbox controller 103 is directly connected with the starting clutch 102, and transmits the power from the engine compartment 101, which is an important part of the vehicle power transmission system and is directly related to the normal driving of the vehicle.

[0042] In the prior art, the research angle of the hybrid double clutch automatic transmission is mostly based on different stages in the starting process of the vehicle, such as the sliding friction stage and the steady running stage, the speed rising stage, the sliding friction stage and the synchronization stage. Different double clutch coordination control methods are established for different vehicle types. At the same time, considering that the TCU controls the double clutch at the same time, there is a problem of insufficient safety, and the present application takes the vehicle starting control method under different starting types as the starting point, fully considers multiple vehicle starting types, and respectively establishes the corresponding double clutch coordination control method, which can make the TCM control the double clutch step by step, reduce the wear degree of a single clutch while ensuring safety performance, and improve the driving feeling. Therefore, the present application provides a vehicle starting control method considering multiple vehicle starting types based on a hybrid double clutch automatic transmission.

[0043] Figure 2 A flowchart of a vehicle starting control method provided by an embodiment of the present application is shown in FIG. 1. Figure 2 The vehicle starting control method provided by the embodiment of the present application comprises the following steps.

[0044] S201, collect and acquire the sensing signals of the sensors of the vehicle.

[0045] When the vehicle starts, each sensor starts working and sends the sensing signals to the TCM, and the TCM automatically receives the sensing signals of each sensor.

[0046] In combination with the experience analysis, the sensing signals of significance for the vehicle starting control method include: a first position sensing signal of the accelerator pedal position sensor, a second position sensing signal of the brake pedal position sensor, a torque size sensing signal of the drive motor torque sensor, a power size sensing signal of the drive motor power sensor, and an oil pressure size sensing signal of the oil pressure sensor.

[0047] In one implementation, the driver rotates the key to start the automatic transmission vehicle, and steps on the brake after the gear is engaged. When the driver steps on the brake, the brake pedal position sensor sends the second position sensing signal to the TCM, and the TCM stores the second position sensing signal after receiving the second position sensing signal.

[0048] In another implementation, the driver performs the gear engagement operation on the manual transmission vehicle, and slowly releases the brake while slowly stepping on the accelerator, and the vehicle starts. When the driver slowly releases the brake while slowly stepping on the accelerator, the accelerator pedal position sensor sends the first position sensing signal to the TCM, and the brake pedal position sensor sends the second position sensing signal to the TCM, and the TCM stores the first position sensing signal and the second position sensing signal after receiving the first position sensing signal and the second position sensing signal.

[0049] This method sends the sensing signals of multiple sensors to the TCM for storage, so that the signal collection is more concentrated, and the large and comprehensive sensing signals obtained by the TCM also provide a basis for subsequent coordinated control of the double clutch according to each sensing signal.

[0050] S202, determining the vehicle starting type according to the sensing signals of the sensors.

[0051] The TCM analyzes the sensing signals of the sensors immediately after receiving the sensing signals, and determines the vehicle starting type according to the analysis result.

[0052] Through multiple experimental analyses, the vehicle starting type can be summarized into four types, including: parallel starting, engine direct drive starting, pure electric sliding friction starting, and pure electric starting.

[0053] Figure 3 Flowchart of the vehicle starting control method provided by the embodiments of the present application Figure Two , see Figure 3 , in combination with Figure 4 the signaling interaction diagram of the vehicle starting control method provided by the embodiments of the present application, the analysis method of the TCM for the sensing signals of the sensors, including:

[0054] S301, determining the first opening percentage of the accelerator pedal according to the first position sensing signal.

[0055] The accelerator pedal position sensor determines the first opening percentage of the accelerator pedal after receiving the first position sensing signal of the accelerator pedal, and sends the first opening percentage to the TCM.

[0056] S302, determining the second opening percentage of the brake pedal according to the second position sensing signal.

[0057] The brake pedal position sensor determines the second opening percentage of the brake pedal after receiving the second position sensing signal of the brake pedal, and sends the second opening percentage to the TCM.

[0058] S303, determining whether the vehicle is parallel start according to the opening percentage and the preset opening threshold.

[0059] Parallel start includes full throttle start and catapult start.

[0060] If the first opening percentage is greater than or equal to the first opening threshold and the second opening percentage is equal to 0, it is determined that the start type of the vehicle is full throttle start in parallel start.

[0061] If the first opening percentage is greater than or equal to the first opening threshold and the second opening percentage is greater than or equal to the first opening threshold, it is determined that the start type of the vehicle is catapult start in parallel start.

[0062] S304, determining the torque output value of the drive motor according to the torque size sensing signal.

[0063] The drive motor torque sensor determines the torque output value of the drive motor after receiving the torque size sensing signal, and sends the torque output value to the TCM.

[0064] S305, determining the power output value of the drive motor according to the power size sensing signal.

[0065] The drive motor power sensor determines the power output value of the drive motor after receiving the power size sensing signal, and sends the power output value to the TCM.

[0066] S306, determining whether the vehicle is engine direct drive start according to the torque output value and the power output value, and the respective preset threshold values.

[0067] If the torque output value is less than the torque threshold value, or the power output value is less than the power threshold value, or the torque output value is less than the torque threshold value and the power output value is less than the power threshold value, it is determined that the start type of the vehicle is engine direct drive start.

[0068] S307, determining the oil pressure output value according to the oil pressure size sensing signal.

[0069] The oil pressure sensor determines an oil pressure output value after receiving the oil pressure size sensing signal, and sends the oil pressure output value to the TCM.

[0070] S308, determining whether the vehicle is a pure electric slip start according to the oil pressure output value and a preset oil pressure threshold value.

[0071] If the oil pressure output value is less than the oil pressure threshold value, it is determined that the start type of the vehicle is a pure electric slip start.

[0072] S309, determining that the vehicle is a pure electric start.

[0073] If the start type of the vehicle is not any one of the parallel start, the engine direct drive start and the pure electric slip start, it is determined that the start type of the vehicle is a pure electric start.

[0074] It can be understood that, Figure 3 Only after it is determined that the start type of the vehicle is not any one of the parallel start, the engine direct drive start and the pure electric slip start, it can be determined that the start type of the vehicle is a pure electric start. In actual application, the TCM can analyze the sensing signals of the sensors at the same time, and the parallel start, the engine direct drive start, the pure electric slip start and the pure electric start are in parallel relationship in determining the start type of the vehicle, and there is no sequence.

[0075] In an implementation manner, after receiving the sensing signals of the sensors, the TCM determines the output values corresponding to the sensing signals and analyzes the output values. If the first opening degree threshold value preset in the TCM is 90%, the second opening degree threshold value is 0, the first opening degree percentage received by the TCM is greater than or equal to 90%, and the second opening degree percentage is equal to 0, the vehicle satisfies the full throttle start in the parallel start, and the TCM can determine that the start type of the vehicle is the parallel start.

[0076] In another implementation manner, after receiving the sensing signals of the sensors, the TCM determines the output values corresponding to the sensing signals and analyzes the output values. If the first opening degree threshold value preset in the TCM is 90%, the second opening degree threshold value is 0, the torque threshold value is 0, the first opening degree percentage received by the TCM is less than 90%, the second opening degree percentage is equal to 0, and the torque output value is equal to 0, the vehicle does not satisfy the full throttle start in the parallel start, but satisfies the engine direct drive start, and the TCM can determine that the start type of the vehicle is the engine direct drive start.

[0077] This method can make the vehicle start control method more targeted and the control more accurate by accurately dividing the start type of the vehicle and clearly distinguishing different start types from a new angle different from the slip stage and the steady state running stage.

[0078] S203, a control strategy corresponding to the determined starting type is adopted to jointly control the mode clutch and the starting clutch.

[0079] Figure 5 A flowchart of the double-clutch coordinated control method under the parallel starting type provided by the embodiment is shown in the figure, and the figure is Figure 5 The figure shows that the Figure 6 The signaling interaction diagram of the double-clutch coordinated control method under the parallel starting type provided by the embodiment is shown in the figure. If the starting type of the vehicle is parallel starting, a control strategy corresponding to the determined starting type is adopted to jointly control the mode clutch and the starting clutch, including:

[0080] S501, it is determined whether the starting clutch and the mode clutch are both in the separated state.

[0081] If yes, S502 is performed; if the starting clutch is not in the separated state, a feedback signal is fed back to the TCM, the TCM re-sends a control signal to the starting clutch to make the starting clutch separate; if the mode clutch is not in the separated state, a feedback signal is fed back to the TCM, the TCM re-sends a control signal to the mode clutch to make the mode clutch separate.

[0082] S502, it is determined whether the engine speed and the speed of the drive motor are synchronized.

[0083] After the starting clutch is in the separated state, the TCM re-sends a control signal to the drive motor to make the drive motor start running and speed regulation; after the mode clutch is in the separated state, the TCM re-sends a control signal to the engine to make the engine start running and speed regulation; the TCM analyzes according to the speed output values fed back by the drive motor and the engine, and when the speeds of the drive motor and the engine are equal, S503 is performed, and when the speeds of the drive motor and the engine are not equal, the drive motor speed regulation stage is returned, and the TCM sends a control signal to continue speed regulation of the drive motor and then analyzes again.

[0084] S503, the mode clutch and the starting clutch are controlled to be engaged respectively.

[0085] When the speeds of the drive motor and the engine are equal, the TCM sends a control signal to the mode clutch to make the mode clutch engage, and the TCM re-sends a control signal to the starting clutch to make the starting clutch engage. If not engaged, the TCM re-sends a control signal to the clutch that is not engaged to make it engage.

[0086] Figure 7 A flowchart of the double-clutch coordinated control method under the engine direct drive starting type provided by the embodiment is shown in the figure, and the figure is Figure 7 The figure shows that the Figure 8The signaling interaction schematic diagram of the parallel engine direct drive starting type double clutch coordination control method provided by the embodiment of the application is shown in the figure, if the starting type of the vehicle is the engine direct drive starting, the control strategy corresponding to the determined starting type is adopted, the mode clutch and the starting clutch are jointly controlled, including:

[0087] S701, determine whether the starting clutch and the mode clutch are in the separation state.

[0088] If yes, S702 is performed, if the starting clutch is not in the separation state, a feedback signal is fed back to the TCM, the TCM re-sends a control signal to the starting clutch to make the starting clutch separate, if the mode clutch is not in the separation state, a feedback signal is fed back to the TCM, the TCM re-sends a control signal to the mode clutch to make the mode clutch separate.

[0089] S702, determine whether the engine is running.

[0090] After the mode clutch is in the separation state, the TCM sends a control signal to the engine to make the engine start running and speed up, if the engine starts running, S703 is performed, if the TCM determines that the engine is not running according to the speed output value fed back by the engine, the TCM re-sends a control signal to the engine to make the engine run.

[0091] S703, control the mode clutch and the starting clutch to be engaged respectively.

[0092] When the speed of the driving motor is equal to the speed of the engine, the TCM sends a control signal to the mode clutch to make the mode clutch engage, and the TCM sends a control signal to the starting clutch to make the starting clutch engage, if not, the TCM re-sends a control signal to the clutch that is not engaged to make it engage.

[0093] Figure 9 The flowchart of the double clutch coordination control method under the pure electric sliding friction starting type provided by the embodiment of the application is shown in the figure, referring to Figure 9 The figure shows that the control strategy corresponding to the determined starting type is adopted, the mode clutch and the starting clutch are jointly controlled, including: Figure 10 The signaling interaction schematic diagram of the double clutch coordination control method under the pure electric sliding friction starting type provided by the embodiment of the application is shown in the figure, if the starting type of the vehicle is the pure electric sliding friction starting, the control strategy corresponding to the determined starting type is adopted, the mode clutch and the starting clutch are jointly controlled, including:

[0094] S901, determine whether the starting clutch and the mode clutch are in the separation state.

[0095] If yes, S902 is performed; if the launch clutch is not in the disengaged state, a feedback signal is fed back to the TCM, the TCM re-sends a control signal to the launch clutch to make the launch clutch disengage; if the mode clutch is not in the disengaged state, a feedback signal is fed back to the TCM, the TCM re-sends a control signal to the mode clutch to make the mode clutch disengage.

[0096] S902, it is determined whether the driving motor speed is greater than a preset speed threshold.

[0097] If yes, S903 is performed; if the driving motor speed is less than or equal to the preset speed threshold, the TCM re-sends a control signal to the driving motor to make the driving motor continue to speed up until the driving motor speed is greater than the preset speed threshold.

[0098] S903, the launch clutch is controlled to engage.

[0099] When the driving motor speed is greater than the preset speed threshold, the TCM sends a control signal to the launch clutch to make the launch clutch engage. If not, the TCM re-sends a control signal to the launch clutch to make it engage.

[0100] Figure 11 A flowchart of a double-clutch coordination control method in a pure electric starting type provided by the embodiment is shown in the figure, and Figure 11 The figure shows that the double-clutch coordination control method in the pure electric starting type provided by the embodiment is combined with Figure 12 The signaling interaction diagram of the double-clutch coordination control method in the pure electric starting type provided by the embodiment is shown in the figure. If the starting type of the vehicle is pure electric starting, the control strategy corresponding to the determined starting type is adopted to jointly control the mode clutch and the launch clutch, including:

[0101] S111, it is determined whether the launch clutch is in the locked state and whether the mode clutch is in the disengaged state.

[0102] If yes, S112 is performed; if the launch clutch is not in the locked state, a feedback signal is fed back to the TCM, the TCM re-sends a control signal to the launch clutch to make the launch clutch lock; if the mode clutch is not in the disengaged state, a feedback signal is fed back to the TCM, the TCM re-sends a control signal to the mode clutch to make the mode clutch disengage.

[0103] S112, it is determined whether the driving motor torque is greater than a preset torque threshold.

[0104] If yes, S113 is performed; if the driving motor torque is less than or equal to the preset torque threshold, the TCM re-sends a control signal to the driving motor to make the driving motor continue to run and output torque until the driving motor torque is greater than the preset torque threshold.

[0105] S113, the control start clutch is engaged.

[0106] When the driving motor torque is greater than the preset torque threshold, the TCM sends a control signal to the start clutch to make the start clutch engaged. If it is not engaged, the TCM re-sends a control signal to the start clutch to make it engaged.

[0107] It can be understood that there is a sequence in the double clutch coordination control process, and the completion of the previous step is a necessary condition for the next step, so the TCM will send a control signal in a loop until it can meet the conditions.

[0108] In an implementation manner, after the start type of the vehicle is determined as the engine direct drive start, the start clutch and the mode clutch are both disengaged, at this time the engine is started and the speed is adjusted, so that the mode clutch is engaged first and then the start clutch is engaged, so that the vehicle starts.

[0109] In this process, the TCM sends a control signal to the start clutch and the mode clutch respectively to make both clutches disengage, and the two clutches respectively feed back their state signals to the TCM after completing the disengagement. If the state signal fed back by the mode clutch is not disengaged, the TCM will send a control signal to the mode clutch again to make it disengage. If the state signal fed back by the mode clutch is still not disengaged, the TCM will send a control signal to the mode clutch for the third time to make it disengage. The disengagement of the start clutch and the mode clutch is a necessary condition for the next step, so when the mode clutch is not in the disengaged state, the TCM will send a control signal to the mode clutch in a loop until the mode clutch is disengaged, and the number of loops is not limited here.

[0110] After the TCM receives the state signals of the double clutches as disengaged, it sends a control signal to the engine to control the engine to start and adjust the speed, and the engine feeds back its state signal to the TCM after completing the start and speed adjustment. Similarly, if the state signal fed back by the engine is not started, the TCM will send a control signal to the engine again to make it start. If the state signal fed back by the engine is still not started, the TCM will send a control signal to the engine for the third time to make it start. The start and speed adjustment of the engine is a necessary condition for the next step, so when the engine is not in the started state, the TCM will send a control signal to the engine in a loop until the engine is started, and the number of loops is not limited here.

[0111] After the TCM receives the signal of the engine starting, the control signal is sent to the mode clutch again to control the mode clutch to engage, and the mode clutch feeds back its state signal to the TCM after completing the engagement. Similarly, if the state signal fed back by the mode clutch is not engaged, the TCM will send the control signal to the mode clutch again to make it engage. If the state signal fed back by the mode clutch is still not engaged, the TCM will send the control signal to the mode clutch for the third time to make it engage. The engagement of the mode clutch is a prerequisite for the next step, so when the mode clutch is not engaged, the TCM will send the control signal to the mode clutch in a loop until the mode clutch is engaged, and the number of loops is not limited here.

[0112] After the TCM receives the signal of the mode clutch engaging, the control signal is sent to the start clutch again to control the start clutch to engage, and the vehicle starts.

[0113] This method establishes different double clutch coordination control methods in the vehicle starting process for different starting types, reduces the starting torque borne by a single clutch through the coordination control of the double clutch, and the coordination control of the double clutch can achieve smoother torque output, improving the driving experience. Different starting types correspond to different coordination control methods, which can more quickly and accurately control the actions of the double clutch, making the control more targeted. The TCM controls the double clutch in steps, which can ensure the coordination control of the double clutch while avoiding the possibility of errors caused by the TCM controlling the double clutch at the same time, effectively improving the safety performance of the vehicle.

[0114] Figure 13 The structural block diagram of the vehicle starting control device provided by the embodiment of the application is shown in FIG. 1. For ease of illustration, only parts related to the embodiment of the application are shown. As shown in FIG. 1, the vehicle starting control device provided by the embodiment of the application includes a collection module 131, an analysis module 132, and a control module 133. Figure 13 The collection module 131 is configured to collect sensing signals of sensors of the vehicle.

[0115] The analysis module 132 is configured to determine, according to the sensing signals of the sensors, the starting type of the vehicle as one of parallel starting, engine direct drive starting, pure electric sliding friction starting, and pure electric starting.

[0116] The control module 133 is configured to jointly control the mode clutch and the start clutch by using a control strategy corresponding to the determined starting type.

[0117]

[0118] ​The vehicle starting control device provided by the embodiment of the present application can acquire the sensing signals of the sensors of the vehicle, determine the starting type of the vehicle as one of parallel starting, engine direct drive starting, pure electric sliding friction starting and pure electric starting according to the sensing signals of the sensors, and finally adopt the control strategy corresponding to the determined starting type to jointly control the mode clutch and the starting clutch according to the starting type, so as to solve the problems that the existing vehicle starting control method only considers the starting process as the research angle and the safety is not enough due to the simultaneous control of the double clutches by the TCU.

[0119] Figure 14 The structure schematic diagram of the electronic device provided by the embodiment of the present application is shown in Figure 14 , which comprises a memory 141, a processor 142 and a computer program. Figures 2 to 12 The computer program is stored in the memory 141 and is configured to be executed by the processor 142 to implement each step of Figure 13 The processor 142 is used to implement each module of .

[0120] The memory 141 and the processor 142 are connected through a bus 143.

[0121] The related description can be understood by referring to the related description and effects of the steps in the embodiments corresponding to Figures 2 to 12 , and will not be described in detail here.

[0122] The embodiment of the present application also provides a computer readable storage medium comprising computer code, which, when executed on a computer, causes the computer to perform the method provided by any of the implementation manners of Figures 2 to 14 .

[0123] The embodiment of the present application also provides a computer program product comprising program code, which, when a computer executes the computer program product, executes the method provided by any of the implementation manners of Figures 2 to 14 .

[0124] Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. The present application is intended to cover any variations, uses or adaptive changes of the present application following the general principles of the present application and including commonly known or customary technical methods in the art not disclosed in the present application. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present application are indicated by the following claims.

[0125] It is to be understood that the application is not limited to the precise construction already described above and shown in the drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application should only be limited by the claims appended hereto.

Claims

1. A vehicle start-up control method characterized by, The method comprises: collecting sensing signals of sensors of a vehicle; the sensing signals comprise: a first position sensing signal of an accelerator pedal position sensor, a second position sensing signal of a brake pedal position sensor, a torque magnitude sensing signal of a drive motor torque sensor, a power magnitude sensing signal of a drive motor power sensor, and an oil pressure magnitude sensing signal of an oil pressure sensor; determining a starting type of the vehicle according to the sensing signals of the sensors, the determined starting type being one of parallel starting, engine direct drive starting, pure electric slip starting, and pure electric starting; controlling the mode clutch and the starting clutch jointly using a control strategy corresponding to the determined starting type.

2. The method of claim 1, wherein the determining of the starting type of the vehicle according to the sensing signals of the sensors comprises: determining whether the starting type of the vehicle is parallel starting according to the first position sensing signal and the second position sensing signal.

3. The method of claim 2, wherein, the determining of whether the starting type of the vehicle is parallel starting according to the first position sensing signal and the second position sensing signal comprises: determining a first opening percentage of the accelerator pedal according to the first position sensing signal; determining a second opening percentage of the brake pedal according to the second position sensing signal; if the first opening percentage is greater than or equal to a first opening threshold and the second opening percentage is equal to 0, determining that the starting type of the vehicle is full throttle starting in parallel starting; if the first opening percentage is greater than or equal to the first opening threshold and the second opening percentage is greater than or equal to the first opening threshold, determining that the starting type of the vehicle is catapult starting in parallel starting.

4. The method according to claim 2 or 3, characterized in that, if the starting type of the vehicle is parallel starting, the controlling of the mode clutch and the starting clutch using the control strategy corresponding to the determined starting type comprises: determining whether the starting clutch and the mode clutch are both in a disengaged state; if yes, determining whether the engine speed is synchronized with the speed of the drive motor; if yes, controlling the mode clutch and the starting clutch to be engaged respectively.

5. The method of claim 1, wherein the determining of the starting type of the vehicle according to the sensing signals of the sensors comprises: determining whether the starting type of the vehicle is engine direct drive starting according to the torque magnitude sensing signal and the power magnitude sensing signal.

6. The method of claim 5, wherein, the determining of whether the starting type of the vehicle is engine direct drive starting according to the torque magnitude sensing signal and the power magnitude sensing signal comprises: determining a torque output value of the drive motor according to the torque magnitude sensing signal; determining a power output value of the drive motor according to the power magnitude sensing signal; if the torque output value is less than a torque threshold, or the power output value is less than a power threshold, or both the torque output value is less than the torque threshold and the power output value is less than the power threshold, determining that the starting type of the vehicle is engine direct drive starting.

7. The method according to claim 5 or 6, characterized in that, If the starting type of the vehicle is engine direct starting, the control strategy corresponding to the determined starting type is adopted to jointly control the mode clutch and the starting clutch, including: determining whether the starting clutch and the mode clutch are both in the separated state; if yes, determining whether the engine is running; if yes, controlling the mode clutch and the starting clutch to be engaged respectively.

8. The method of claim 1, wherein the determining of the starting type of the vehicle according to the sensing signals of the sensors comprises: determining whether the starting type of the vehicle is pure electric sliding friction starting according to the oil pressure size sensing signal.

9. The method of claim 8, wherein, the determining of whether the starting type of the vehicle is pure electric sliding friction starting according to the oil pressure size sensing signal comprises: determining the oil pressure output value of the vehicle according to the oil pressure size sensing signal; if the oil pressure output value is less than the oil pressure threshold value, determining that the starting type of the vehicle is pure electric sliding friction starting.

10. The method according to claim 8 or 9, characterized in that, If the starting type of the vehicle is pure electric sliding friction starting, the control strategy corresponding to the determined starting type is adopted to jointly control the mode clutch and the starting clutch, including: determining whether the starting clutch and the mode clutch are both in the separated state; if yes, determining whether the drive motor speed is greater than a preset speed threshold value; if yes, controlling the starting clutch to be engaged.

11. The method of any one of claims 1-3, 5-6, 8-9, wherein, If the starting type of the vehicle is pure electric starting, the control strategy corresponding to the determined starting type is adopted to jointly control the mode clutch and the starting clutch, including: determining whether the starting clutch is in the locked state and the mode clutch is in the separated state; if yes, determining whether the drive motor torque is greater than a preset torque threshold value; if yes, controlling the starting clutch to be engaged.

12. A vehicle start-up control device characterized by comprising: including: a collection module, configured to collect sensing signals of sensors of the vehicle; the sensing signals include: a first position sensing signal of an accelerator pedal position sensor, a second position sensing signal of a brake pedal position sensor, a torque size sensing signal of a drive motor torque sensor, a power size sensing signal of a drive motor power sensor, and an oil pressure size sensing signal of an oil pressure sensor; an analysis module, configured to determine the starting type of the vehicle according to the sensing signals of the sensors, the determined starting type being one of parallel starting, engine direct starting, pure electric sliding friction starting, and pure electric starting; a control module, configured to adopt a control strategy corresponding to the determined starting type to jointly control the mode clutch and the starting clutch.

13. An electronic device, comprising: including: a processor, and a memory connected with the processor in communication; the memory stores computer execution instructions; the processor executes the computer execution instructions stored in the memory to realize the method of any one of claims 1-11.

14. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer execution instructions, and the computer execution instructions are executed by the processor to realize the method of any one of claims 1-11.

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