Shift control method, controller and vehicle

Abstract

The present application relates to a kind of gear shift control method, controller and vehicle, comprising: obtaining intention shift request;Determine the shift state of the current execution of quasi-target gear, quasi-target gear is the gear to be executed indicated by the shift request received at last time;When the shift state indicates that it is allowed to switch from the shift process of quasi-target gear to the shift process of new target gear, determine the shift parameter of new target gear according to the shift type of quasi-target gear and new target gear.The present application can determine whether the current quasi-target gear shift process can be adjusted based on the shift state of quasi-target gear during the current quasi-target gear shift process, and when it is determined that the adjustment can be made, timely enter the shift process of new target gear representing the latest intention of driver, flexibly adjust the driving state of vehicle, satisfy the driving demand of driver in real time, and ultimately improve the driving experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a gear shifting control method, a controller and a vehicle. BACKGROUND

[0002] In the actual vehicle driving process, due to the change of driving environment and other factors, there are situations where the current gear shifting request is changed in the gear shifting process controlled by the controller to execute the gear shifting of the actuator. For example, in the process of responding to the gear shifting request for upshift, the driver changes the current intention and needs to change the upshift request to a downshift request.

[0003] Currently, when the gear shifting intention is changed in the gear shifting process, the controller will control the actuator to perform the corresponding gear shifting operation according to the subsequent gear shifting request after the current gear shifting process is completed, that is, two consecutive gear shifting processes need to be performed, thereby making the gear shifting process rigid and inflexible, and unable to meet the current gear shifting demand of the driver in time. SUMMARY

[0004] In order to improve the flexibility of gear shifting in the vehicle driving process, the present application provides a gear shifting control method, which comprises:

[0005] obtaining an intention gear shifting request, the intention gear shifting request indicating the current gear position change intention of the vehicle driver, and the intention gear shifting request including a gear shifting type corresponding to a new target gear position;

[0006] determining a gear shifting state of a current executed quasi-target gear position, the quasi-target gear position being a gear position to be executed indicated by a gear shifting request received at the last time, and the gear shifting request including a gear shifting type of the quasi-target gear position;

[0007] when the gear shifting state indicates that the gear shifting process of the quasi-target gear position is allowed to switch to the gear shifting process of the new target gear position, determining a gear shifting parameter of the new target gear position according to the gear shifting types of the quasi-target gear position and the new target gear position, the gear shifting parameter being used to instruct a gear shifting actuator to execute the gear shifting process of the new target gear position.

[0008] Optionally, the gear shifting control method provided by the embodiment of the present application, the gear shifting state includes a gear shifting stage currently occupied by the quasi-target gear position and a current available energy of a clutch, and the gear shifting stage includes a speed adjustment stage, and the determination of the gear shifting state of the current executed quasi-target gear position comprises:

[0009] determining the gear shifting stage currently occupied by the quasi-target gear position;

[0010] when the gear shifting stage is the speed adjustment stage, determining the current available energy of the clutch corresponding to the quasi-target gear position;

[0011] If the available energy of the clutch of the quasi-target gear position meets the energy condition, it indicates that the shift process of the quasi-target gear position is allowed to switch to the shift process of the new target gear position.

[0012] Optionally, the shift control method provided by the embodiment of the present application, the energy condition comprises that the available energy is not less than the required energy of the clutch of the new target gear position, and the method further comprises:

[0013] determining the required energy of the clutch of the new target gear position.

[0014] Optionally, the shift control method provided by the embodiment of the present application, the determination of the available energy of the clutch of the quasi-target gear position currently comprises:

[0015] determining the actual slip-mo energy of the clutch of the quasi-target gear position currently according to the current slip of the clutch corresponding to the quasi-target gear position and the current clutch torque;

[0016] determining the difference between the maximum clutch slip-mo energy and the actual slip-mo energy as the available energy of the clutch of the quasi-target gear position currently.

[0017] Optionally, the shift control method provided by the embodiment of the present application, the determination of the required energy of the clutch of the new target gear position comprises:

[0018] determining the product of the clutch target slip corresponding to the new target gear position, the clutch torque corresponding to the new target gear position and the minimum speed corresponding to the new target gear position;

[0019] integrating the product in a period to obtain the required energy.

[0020] Optionally, the shift control method provided by the embodiment of the present application, the shift stage further comprises a start stage, a shaft-hanging gear stage and an oil-filling stage, a speed adjustment stage and an in-gear stage, and if the current shift stage of the quasi-target gear position is not the speed adjustment stage, when the current shift stage of the quasi-target gear position is the start stage, the shaft-hanging gear stage or the oil-filling stage, it indicates that the shift process of the quasi-target gear position is allowed to switch to the shift process of the new target gear position.

[0021] Optionally, the shift control method provided by the embodiment of the present application, the obtaining of the intended shift request comprises:

[0022] obtaining the state parameter of the vehicle currently.

[0023] determining the new target gear position according to the state parameter, and generating the intended shift request according to the new target gear position.

[0024] Optionally, the shift control method provided by the embodiment of the present application comprises the following steps:

[0025] determining the shift mode corresponding to the new target gear position according to the shift type of the new target gear position;

[0026] when the shift modes corresponding to the quasi-target gear position and the new target gear position are inconsistent, determining the gear position to be entered and the target rotating speed of the new target gear position according to the shift types of the quasi-target gear position and the new target gear position;

[0027] or, when the shift modes corresponding to the quasi-target gear position and the new target gear position are consistent, determining the target rotating speed of the new target gear position according to the shift types of the quasi-target gear position and the new target gear position.

[0028] In a second aspect, the embodiment of the present application provides a controller, which comprises a processor, a memory, and computer program instructions stored in the memory and executable on the processor, and the processor is configured to implement the shift control method according to the first aspect.

[0029] In a third aspect, the embodiment of the present application provides a vehicle, which comprises the controller according to the second aspect.

[0030] It can be understood that the shift control method, the controller and the vehicle provided by the present application can be used to determine the gear state of the quasi-target gear position when the intention shift request indicating the change of the driver's intention is received during the shift process of the current quasi-target gear position controlled by the vehicle controller, and determine whether the shift process of the new target gear position is allowed to be switched from the shift process of the quasi-target gear position according to the gear state. Then, when it is determined that the shift process of the new target gear position is allowed to be switched, the shift process of the quasi-target gear position is terminated, and the shift process of the new target gear position is executed according to the shift parameters determined according to the shift types of the quasi-target gear position and the new target gear position, so that the vehicle enters the new target gear position meeting the driver's intention at the next moment, thereby realizing the timely and flexible adjustment of the gear switching of the vehicle based on the driver's intention and the current shift state of the vehicle.

[0031] That is, in the above process, when the intention shift request indicating the change of the driver's intention is received during the shift process of the current quasi-target gear position, the shift state of the quasi-target gear position is determined to be adjusted, the shift process of the new target gear position indicating the latest intention of the driver is entered in time, the driving state of the vehicle is flexibly adjusted, the driving demand of the driver is met in real time, and the driving experience is finally improved. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the accompanying drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0033] Figure 1 Structure schematic diagram of a hybrid system in series mode;

[0034] Figure 2 Structure schematic diagram of a hybrid system in parallel mode;

[0035] Figure 3 Principle schematic diagram of a shift mode in which torque is in front and speed is in back;

[0036] Figure 4 Principle schematic diagram of a shift mode in which speed is in front and torque is in back;

[0037] Figure 5 Flow schematic diagram of a shift control method in an embodiment of the present application;

[0038] Figure 6 Frame schematic diagram of a shift control method in an embodiment of the present application;

[0039] Figure 7 Schematic diagram of clutch slip energy change in an intended shift process in an embodiment of the present application;

[0040] Figure 8 Schematic diagram of a switching process in an intended shift in an embodiment of the present application;

[0041] Figure 9 Schematic diagram of a switching process in an intended shift in some embodiments of the present application;

[0042] Figure 10 Schematic diagram of a switching process in an intended shift in some embodiments of the present application;

[0043] Figure 11 Flow schematic diagram of a shift control method in some embodiments of the present application;

[0044] Figure 12 Structure schematic diagram of a shift control device in an embodiment of the present application;

[0045] Figure 13 System structure schematic diagram of an electronic device in a vehicle in an embodiment of the present application. DETAILED DESCRIPTION

[0046] The principles and features of the present application are described below in connection with the attached drawings, which are meant to be exemplary only and not limiting of the present application.

[0047] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, specific embodiments of the present application are described in detail below with reference to the attached drawings. Although some embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be interpreted as being limited to the embodiments set forth herein, but rather these embodiments are provided to make the present application more thorough and complete. It should be understood that the drawings and embodiments of the present application are only for illustrative purposes and are not intended to limit the scope of protection of the present application.

[0048] It should be understood that each step described in the method embodiments of the present application can be performed in different order and / or in parallel. In addition, the method embodiments can include additional steps and / or omit the steps shown. The scope of the present application is not limited in this respect.

[0049] The names of the messages or information exchanged between the devices in the embodiments of the present application are only for illustrative purposes and are not intended to limit the scope of the messages or information.

[0050] It can be understood that, in the technical field of vehicles, with the increasingly stringent requirements for fuel consumption and emissions, and the development of electrical systems, the limitations of battery technology in pure electric vehicle technology systems, hybrid systems are being vigorously promoted. As shown in Figure 1 and Figure 2 The hybrid vehicle includes a first power mechanism and a second power mechanism, the first power mechanism includes an engine (ICE) and a second motor P1 connected thereto, the second motor can be used to generate electricity to charge the battery, drive the engine to start, etc. The second power mechanism includes a first motor P2, which can also be referred to as a drive motor, and a clutch C0 for mode switching is connected between the first motor and the second motor.

[0051] The dual-motor hybrid system motor includes three modes: pure electric mode, series mode and parallel mode. In series mode, P2 drives the wheels, the C0 clutch is not engaged, the engine charges the battery through P1, and P2 drives the wheels. In parallel mode, the C0 clutch is engaged, and the engine directly drives the wheels.

[0052] Figure 1 is a schematic diagram of the driving mode of the hybrid vehicle in series mode, in series mode, the clutch C0 is in a separated state, the engine charges the battery through the second motor, and the first motor is powered, and the first motor drives the wheels through the transmission.

[0053] Figure 2is a schematic diagram of a driving mode of a hybrid vehicle in a parallel mode. In the parallel mode, the clutch is in an engaged state (may also be referred to as a combined state), and the engine and the first motor jointly drive the wheels through the transmission.

[0054] In the above hybrid scenario, the process of the driver's intention to change the gear during vehicle driving is very important throughout the driving process and has a very important influence on drivability.

[0055] For example, when the driver accelerates rapidly, in order to improve the power performance, the automatic transmission will perform a downshift operation, but if the acceleration process occurs in the process of power upshift, the conventional change intention shift control method of rapid acceleration in the process of power upshift needs to perform two consecutive shift processes, i.e., first performing the upshift operation and then performing the downshift operation, which causes a long shift time and affects the shift efficiency, and cannot respond to the driver's driving intention in time.

[0056] Therefore, in the embodiments of the present application, in order to meet the driving demand in time, during the shift process of the controller controlling the actuator of the vehicle, the state parameters of the vehicle reflecting the driver's intention are collected in real time, and when the driver's intention shift request is generated, the shift process being performed is switched according to the shift process being performed, so that the shift process of the vehicle is based on the change of the driver's intention, flexible and timely adjustment is realized, and finally the accurate control of the vehicle driving state is realized.

[0057] It can be understood that the above-mentioned shift process can have different shift modes according to different driving states and scenarios, such as torque phase first-speed phase later (Torque-Speed shift type) and speed phase first-torque phase later (Speed-Torque shift type). Different shift modes can include corresponding stages.

[0058] For example, as shown in FIG. 1, the shift process of the vehicle can include the following stages: the first stage is the process of the driver's intention to change the shift, the second stage is the process of the driver's intention to change the shift, and the third stage is the process of the driver's intention to change the shift. Figure 3As shown, for the torque-first-speed-second shifting mode, the shifting process can specifically include six stages: Begin, New Gear, Prepare, Torque, Speed, and InGear. Specifically, in this shifting type, the off-going clutch undergoes three control processes: In-gear, Disengage, and Neutral; correspondingly, the on-coming clutch undergoes five control processes: Neutral, Prepare, Torque, Speed, and Ingear.

[0059] like Figure 3 As shown, in this shift mode, the engine speed reaches its maximum during the torque phase and is adjusted during the speed adjustment phase. Furthermore, during the torque phase, the clutch torque is altered to achieve clutch disengagement and engagement.

[0060] The specific shift types in this shift mode include power upshift (PwrOnUp) and non-power downshift (PwrOffDwn).

[0061] For example, such as Figure 4 As shown, for gear shifting types where the speed phase precedes the torque phase, the shifting process is divided into five stages: Begin, New Gear, Speed ​​Adjustment, Torque, and In Gear. The Off-going clutch includes four control processes: In-gear, Speed ​​Phase, Disengage, and Neutral. Correspondingly, the On-coming clutch includes four control processes: Neutral, Prepare, Torque Phase, and In Gear.

[0062] The specific shifting process included in this shifting type can be non-power upshift (PwrOffUp) and power downshift (PwrOnDwn).

[0063] It can be understood that, according to the above, in the gear shifting process of the vehicle, the actuators that can be specifically involved include the gear control mechanism and the clutch control mechanism, that is, the gear control mechanism and the clutch control mechanism are coordinated to control the gear combination / separation and the two clutch switching. Finally, in the intention gear shifting process based on the intention of the driver, the change of the gear and the power type are realized, and the target speed is recalculated according to the new target gear.

[0064] It can be understood that the gear shifting control method in the embodiment of the application can be used for the controller in the vehicle, that is, the method can be executed by the controller in the vehicle, such as an automatic transmission control (TCU). The application does not limit this.

[0065] In order to better understand the vehicle gear shifting control method provided by the embodiment of the application, the following will be described in detail with reference to the drawings.

[0066] Figure 5 The flowchart of the vehicle gear shifting control method provided by the embodiment of the application is shown in FIG. 1, which specifically includes the following steps. Figure 5

[0067] S110, an intention gear shifting request is acquired, the intention gear shifting request indicating the gear change intention of the driver at present, and the intention gear shifting request including the gear shifting type corresponding to the new target gear.

[0068] S120, the gear shifting state of the current executed quasi-target gear is determined, the quasi-target gear being the gear to be executed indicated by the gear shifting request received at the last time, and the gear shifting type of the quasi-target gear being included in the gear shifting request.

[0069] S130, when the gear shifting state indicates that the gear shifting process of the quasi-target gear is allowed to be switched to the gear shifting process of the new target gear, the gear shifting parameter of the new target gear is determined according to the gear shifting types of the quasi-target gear and the new target gear, and the gear shifting parameter is used to instruct the gear shifting actuator to execute the gear shifting process of the new target gear.

[0070] Specifically, in order to realize the timely adjustment of the gear shifting process, in the process in which the controller of the vehicle controls the gear shifting actuator to perform the gear shifting of the quasi-target gear, the intention gear shifting request reflecting the gear change intention of the driver at present can be acquired.

[0071] The intention gear shifting request includes the gear shifting type of the new target gear.

[0072] The new target gear indicates the intention gear of the driver at present, that is, the gear that the driver needs to drive the vehicle to execute as soon as possible. The gear shifting type in the intention gear shifting request can include the power upshift type or the non-power downshift type; the non-power upshift type or the power downshift type. ​

[0073] As mentioned above, at the last time, the driver steps on the accelerator pedal, so that the controller receives the shift request at the last time, and the shift type indicated by the target gear in the shift request is power upshift. And, the vehicle controller is responding to the shift request, and the control is being executed to implement the power upshift process. At this time, if the driver suddenly steps on the brake pedal, so that the controller receives the intention shift request of the new target gear, that is, the intention shift request of the power downshift of the driver is generated, and indicates that in the current power shift process being executed, the process needs to be changed to implement the shift process of the power downshift.

[0074] Further, after receiving the intention shift request, the controller can determine the shift type and the shift state of the quasi-target gear currently being executed by the actuator.

[0075] The quasi-target gear is the target gear indicated by the gear shift request received by the controller at the last time, that is, the shift request received before the driver intends to change, and the shift target of the quasi-target gear currently being executed can include gear shift of power upshift, non-power downshift type, non-power upshift or power downshift. For example, the shift type of the quasi-target gear in the example above is power upshift.

[0076] The shift state can include the current shift phase of the quasi-target gear. For example, one of the six phases in the torque-first-speed-second shift mode mentioned above, or one of the five phases in the speed-first-torque-second shift mode.

[0077] Alternatively, in other embodiments, the shift state can also include the available energy of the corresponding clutch in the current shift process of the quasi-target gear, etc.

[0078] Further, after determining the shift state of the quasi-target gear, and when the shift state indicates that the shift process can be switched at the current time, that is, the shift process of the quasi-target gear can be terminated and the shift process of the new target gear can be entered, the shift parameters of the new target gear can be determined according to the shift type of the quasi-target gear, that is, the new target gear.

[0079] The shift parameters are used to instruct the shift actuator to implement the shift process of the new target gear, and can specifically include a gear indicator of the new target gear to be entered, a target speed of the motor, etc. That is, the corresponding actuator can enter the switching process of the new target gear according to the shift parameters, such as instructing the gear control mechanism to control the engagement and disengagement of the gear, and instructing the switching of the corresponding clutch, and adjusting the target speed of the target gear, so as to ultimately realize the change of the gear and the power type, so that the vehicle runs in the state of the target gear at the next time.

[0080] In combinationFigure 6 As shown, in the shifting process, the shifting point control module in the controller calculates a new target gear according to the current new state parameter, the shifting point decision module determines whether the new target gear is reasonable and accurate, and outputs to the shifting timing control module. The shifting timing control module determines that the shifting process switching can be performed according to the current shifting state of the target gear, and outputs the shifting parameters of the new target gear to coordinate the gear control module and the clutch control module to control the gear combination / separation and the switching of the two clutches, which can specifically include gear replacement and power type change, and can also include recalculating the target speed according to the new target gear.

[0081] It can be understood that, in the embodiment of the present application, when the driver's intention change intention shifting request is obtained during the shifting process of the current target gear controlled by the vehicle controller, the gear state of the target gear is determined, and it is determined whether the shifting process of the new target gear is allowed to be switched from the shifting process of the target gear according to the gear state. Then, when it is determined that the shifting process of the new target gear is allowed to be switched, the shifting process of the target gear is terminated, and the switching process of the new target gear is performed according to the shifting parameters determined by the shifting types of the target gear and the new target gear, so that the vehicle enters the new target gear that meets the driver's intention at the next moment, thereby realizing the timely and flexible adjustment of the gear switching of the vehicle based on the driver's intention and the current shifting state of the vehicle, meeting the needs of the driver and improving the experience.

[0082] That is, in the above process, after receiving the intention shifting request representing the change of the driver's intention during the shifting process of the current target gear, the shifting state of the target gear is determined to adjust the shifting process of the target gear, and the shifting process of the new target gear representing the latest intention of the driver is entered in time, the driving state of the vehicle is flexibly adjusted, the driving needs of the driver are met in real time, and the driving experience is finally improved.

[0083] Optionally, in some embodiments of the present application, in order to improve the flexibility of the driving state of the vehicle during driving, the driving state of the vehicle is monitored in real time during the switching process of the target gear controlled by the controller, so as to master the change of the driver's intention in real time.

[0084] That is, in S110, the intention shifting request is obtained, which specifically includes the following steps:

[0085] S111, obtaining the current state parameter of the vehicle.

[0086] S112, determining the new target gear according to the state parameter, and generating the intention shifting request according to the new target gear.

[0087] Specifically, in the embodiments of the present application, after the vehicle enters the shift process of the quasi-target gear, the current state parameters of the vehicle can be acquired in real time, and then whether the intention of the driver changes or not is determined by using the acquired current state parameters, and when the change occurs, the corresponding new target gear can be determined according to the acquired current state parameters.

[0088] As shown in the formula (1), the current state parameters can include the throttle opening degree and the input shaft speed, and the acquisition of the current state parameters can be realized by acquiring the detection values of the configured sensors. Alternatively, in some embodiments, the current state parameters can also include the change rates of the throttle opening degree and the input shaft speed, such as the change of the throttle opening degree and the input shaft speed relative to the last time. Figure 6

[0089] For example, in practice, the controller can receive the detection values of the above-mentioned sensors transmitted by the ECU through the CAN bus.

[0090] The change of the current state parameters can represent the change of the intention of the driver, that is, the new target gear corresponding to the change of the driving state of the vehicle at the next moment required by the driver.

[0091] In practice, after the state parameters are acquired, the new target gear can be determined by using the pre-stored reference table. That is, the reference table stored can include the corresponding relationship of the gear, the power type, the throttle opening degree, the input shaft and the driving speed of the vehicle.

[0092] Further, when the new target gear is determined by using the acquired state parameters, the shift type of the new target gear can also be determined at the same time.

[0093] For example, the current gear is two gears, and the quasi-target gear currently being executed is power upshift, that is, the vehicle is currently in the process of power upshift from two gears to three gears. When it is determined that the intention of the driver changes by detection, that is, the new target gear is determined to be one gear by the state parameters, it means that the shift type of the new target gear is power downshift.

[0094] Alternatively, in some other embodiments, when the acquired state parameters are the change rates detected by the sensors, such as the change of the throttle opening degree and the change of the input shaft speed, the new target gear and its shift type can be directly determined according to the quasi-target gear and the change.

[0095] It can be understood that in the embodiments of the present application, during the process of gear shifting of the vehicle, the change of the intention of the driver is detected in real time by real-time monitoring of the state parameters, and then the new target gear is determined according to the change of the intention of the driver, so as to timely switch the currently executed gear shifting, to realize the timely and flexible adjustment of the driving state of the vehicle, to meet the requirements of the driver.​

[0096] It can also be understood that, for the progress of the quasi-target gear, different shift types correspond to different shift processes, i.e., being in any one of the above-mentioned five stages or one of the six stages.

[0097] For example, for the speed adjustment (Speed) stage in the vehicle shift progress, the actual engine speed is synchronized to the gear speed corresponding to the clutch. In this stage, the clutch currently available energy reaches the required condition, so as to realize smooth shift.

[0098] Correspondingly, in the process of implementing the shift adjustment of the gear progress in the embodiments of the present application, if the shift progress of the quasi-target gear is in this stage, it is also necessary to combine the current clutch energy to determine whether to allow the shift progress from the quasi-target gear to the new target gear to be switched.

[0099] That is, in other embodiments of the present application, the shift state of the quasi-target gear currently being executed is determined to determine whether the current shift state is running to execute the shift of the gear. Specifically, it includes:

[0100] S121, determining the shift stage in which the quasi-target gear currently is.

[0101] S122, if the current shift stage is the speed adjustment stage, determining the current available energy of the clutch corresponding to the quasi-target gear; wherein, if the current available energy of the clutch meets the energy condition, it means that the shift progress from the quasi-target gear to the new target gear is allowed to be switched.

[0102] Specifically, in some embodiments of the present application, in the process of determining whether the shift progress from the quasi-target gear to the new target gear can be executed according to the shift state of the quasi-target gear, first, by determining the shift stage of the quasi-target gear and the current shift progress being in the speed adjustment stage, the current available energy of the clutch is determined to meet the energy condition.

[0103] It can be understood that, in this speed adjustment stage, when the available energy meets the energy condition, it means that the shift progress from the quasi-target gear to the new target gear is allowed to be switched.

[0104] The energy condition can be specifically that the current available energy of the clutch is not less than the required energy of the clutch of the new target gear.

[0105] For example, the required energy is compared with the available energy, and when the available energy exceeds the required energy, it means that the energy condition is met. Or, the difference between the two exceeds the set threshold, which can mean that the energy condition is met. That is, the current shift progress to the target gear progress can be switched.

[0106] Optionally, in some embodiments of the present application, the value of the available energy of the clutch can be determined by the difference between the maximum clutch slip energy and the actual clutch slip energy, that is, the current available energy of the clutch of the quasi-target gear position specifically includes:

[0107] S1201, determining the current actual slip energy of the clutch of the quasi-target gear position according to the current slip of the clutch corresponding to the quasi-target gear position and the current clutch torque.

[0108] S1202, determining the difference between the maximum clutch slip energy and the actual slip energy as the current available energy of the clutch of the quasi-target gear position.

[0109] Specifically, the actual clutch slip energy is the sum of the current slip and the current gear, i.e., the clutch torque of the quasi-target gear position currently being executed.

[0110] That is:

[0111]

[0112] Wherein, n is the calculation period, i.e., the number of stages to be executed when performing gear shifting, t is the number of stages when performing gear shifting, and the sum is the time period from the start time to the completion time of gear shifting.

[0113] Further, for the energy required for clutch slip, different gear shifting types correspond to the calculation of the corresponding clutch slip energy.

[0114] For example, for power upshift and non-power downshift gear shifting, the clutch slip energy is calculated according to the clutch slip of the clutch to be engaged. For non-power upshift and power downshift gear shifting, the clutch slip energy is calculated based on the clutch slip of the clutch to be separated.

[0115] Further, the required energy of the clutch of the new target gear position specifically includes:

[0116] S1203, determining the product of the target slip of the clutch corresponding to the new target gear position, the clutch torque corresponding to the new target gear position and the minimum speed corresponding to the new target gear position;

[0117] S1204, integrating the product in the execution period to obtain the required energy.

[0118] Specifically, the actual can be represented by the following formula:

[0119] The required energy of the clutch of the new target gear position =

[0120]

[0121] Where n is the calculation period, i.e. the shift stage to be executed, t is the number of stages when the shift is executed, and the sum is the time period from the start time of the shift to the completion time.

[0122] In practice, such as Figure 7 As shown, the clutch slip energy varies under different shift types.

[0123] For example, during upshifting, as the clutch slip decreases, the slip energy during a power upshift is less than that during a non-power upshift, starting in response to the intended shift request. Conversely, during downshifting, the slip energy required for a power downshift is greater than that for a non-power downshift.

[0124] It is understood that in some embodiments of the present invention, during the speed adjustment stage described above, when it is determined by calculation that the available energy of the clutch meets the energy requirements of the clutch in the new target gear, the shifting process of the new target gear can be executed according to the timing logic.

[0125] Alternatively, in some other embodiments, when the shifting phase of the quasi-target gear in the shifting state is in the speed adjustment phase, but the energy of the clutch does not meet the energy condition, it means that the switching process of the new target gear is not allowed to be executed.

[0126] It is understood that, in this embodiment of the invention, in order to achieve flexible adjustment of the shifting process and ensure that the clutch does not overheat, during the speed adjustment phase, the energy required by the clutch of the new target gear and the available energy during the shifting process of the quasi-target gear are calculated. That is, the actual slip energy of the clutch is calculated by using the current slip and current clutch torque, and the energy required by the clutch of the new target gear is calculated by using the target slip, clutch torque and minimum speed phase time of the clutch corresponding to the new target gear. Thus, it is determined whether the clutch of the new target gear meets the energy conditions based on the available energy and the required energy. If the energy conditions are met, the shifting process from the quasi-target gear to the new target gear is executed. That is, in this embodiment of the invention, the clutch temperature sensor does not need to participate in the control process, which can effectively protect the clutch during the driver's intended shifting process, effectively avoid the clutch overheating problem, improve the safety and reliability of the shifting process, and save multiple clutch temperature sensors. This plays an important role in improving drivability and clutch temperature control, making the fulfillment of the driver's intention changes more accurate and flexible.

[0127] Optionally, in some embodiments of the present invention, the shifting state of the target gear is determined, that is, when it is determined that the current shifting stage of the target gear is not the speed adjustment stage, it is further determined whether it is in the starting stage, shaft engagement stage and oil filling stage.

[0128] If the shift state is in the start phase, the shaft-engaging phase or the oil filling phase, it means that the shift from the shift process of the quasi-target gear to the shift process of the new target gear is allowed. That is, the shift process of the new target gear can be executed according to the time sequence logic.

[0129] It can be understood that in this embodiment, the gear state only includes the shift phase, such as the start phase, the shaft-engaging phase or the oil filling phase.

[0130] That is, when the shift process of the quasi-target gear is in any phase other than the speed adjustment and torque phase, any intended shift request can be executed.

[0131] For example, for the start phase of the two shift modes, which is the initial phase of the shift process of the quasi-target gear, the shift process has not formally started, and the purpose of this phase is to confirm that the current clutch state meets the expected state, that is, any possible intended shift request can be executed in this phase.

[0132] For example, for the quasi-target gear shift mode, the oil filling phase can also execute any intended shift request.

[0133] For example, for the shaft-engaging phase of the two shift modes, which is the phase of engaging the corresponding shaft of the side clutch, any possible intended shift request can also be executed in this phase.

[0134] Optionally, in some embodiments of the present application, when it is determined through the shift state that the shift from the shift process of the quasi-target gear to the shift process of the new target gear is allowed, the shift parameters of the new target gear can be determined according to the shift type of the quasi-target gear and the new target gear according to the shift mode corresponding to the quasi-target gear and the new target gear, to instruct the shift execution mechanism to execute the shift from the shift process of the quasi-target gear to the shift process of the new target gear.

[0135] The method specifically includes:

[0136] S131, determining the shift mode corresponding to the new target gear according to the shift type of the new target gear.

[0137] S132, when the shift modes corresponding to the quasi-target gear and the new target gear are inconsistent, determining the gear to be entered by the new target gear and the target speed according to the shift type of the quasi-target gear and the new target gear. Or, when the shift modes corresponding to the quasi-target gear and the new target gear are consistent, determining the target speed of the new target gear according to the shift type of the quasi-target gear and the new target gear.

[0138] Specifically, after receiving the new target gear request, the corresponding shift mode can be determined according to the information indicating the shift type included therein.

[0139] For example, if the shift type of the new target gear is non-power upshift, it indicates that the shift mode is speed-leading-torque-lagging, and if the shift type of the new target gear is power upshift, it indicates that the shift mode is torque-leading-speed-lagging.

[0140] Further, after the quasi-target shift mode and the new target shift mode are determined, the switching process of the new target gear can be taken according to whether the shift modes of the two are the same or not.

[0141] For example, in some embodiments, when the shift modes of the quasi-target gear and the new target gear are inconsistent, such as the quasi-target gear mode is torque-leading-speed-lagging and the shift mode of the new target gear is speed-leading-torque-lagging, or the quasi-target gear is speed-leading-torque-lagging and the new target gear is torque-leading-speed-lagging, the gear to be entered and the target rotational speed are determined according to the transmitted torque in the shift phase of the quasi-target gear and the shift type of the new target gear.

[0142] Specifically, in the speed adjustment phase, if it is determined that the clutch energy condition is met and the shift process is switched, if the shift modes of the quasi-target gear and the new target gear are inconsistent, indicating that the power type has changed, when the gear process is switched, the shift type to be entered needs to be determined through the transmitted torque of the quasi-target gear at present and the new target gear. At the same time, the target synchronous rotational speed needs to be calculated according to the shift type of the target gear. Finally, the corresponding executing mechanism, such as the gear control module and the clutch control module, can be instructed to control the gear combination / separation and the clutch switching according to the determined gear to be entered and the target rotational speed.

[0143] For example, if the shift mode of the quasi-target gear is torque-leading-speed-lagging and the shift mode of the new target gear is speed-leading-torque-lagging, the target rotational speed will be recalculated according to the new target gear at present and the rotational speed phase will be entered, such as changing the intention from power upshift to power downshift in the power upshift process, determining the corresponding shift type to be entered according to the gear with the current transmitted torque and the target at present, and calculating the target synchronous rotational speed.

[0144] For another example, if the shift mode of the quasi-target gear is speed-leading-torque-lagging and the shift mode of the new target gear is torque-leading-speed-lagging, the target rotational speed will be recalculated according to the new target gear at present and the rotational speed phase will be entered, such as changing the intention from non-power upshift to power upshift in the non-power upshift process, determining the corresponding shift type to be entered according to the gear with the current transmitted torque and the target at present, and calculating the target synchronous rotational speed.

[0145] As Figure 8 shown, if the shift type of the quasi-target gear is power upshift in the shift mode of torque in front-speed in back, and when the shift of the quasi-target gear is in the shaft engagement stage, the driver's intention changes, and the intention shift request indicates power downshift in the shift mode of speed in front-torque in back. Then in this stage, the throttle opening appears a rising edge in the shaft engagement stage, which indicates that the driver's intention changes, and the state of maintaining a large opening after the change. Correspondingly, the new target gear changes from upshift state to downshift state in this stage, and maintains the downshift state in the subsequent stage.

[0146] That is, as Figure 8 shown, in this process, the shift mode changes from torque in front-speed in back to speed in front-torque in back, that is, in the process of shift switching, the engine speed can be calculated and adjusted according to the purpose of the new target gear to enter the corresponding speed phase to meet the new target gear, that is, the vehicle speed is maintained in time in the process of power downshift.

[0147] Further, in the process of torque adjustment, that is, in the case of ensuring that the speed of the transmission meets the above requirements, the torque of the engine meets the requirements of the new target gear.

[0148] Correspondingly, for two clutches, such as clutch Y and clutch X. In the process of combining the corresponding shafts of the side clutches to engage the gears, such as clutch Y, due to the generation of the intention shift request, the corresponding power type changes, and after the speed adjustment stage is completed, its torque changes, that is, the separation operation is performed, so that it is in a separated state in the engagement stage. At the same time, the other clutch, i.e. clutch X, adjusts its torque after the speed adjustment stage is completed, so that its torque increases after the speed adjustment stage, realizes combination, and is in a combined state in the engagement stage, finally meeting the requirements of the new target gear.

[0149] Correspondingly, the torque of the input shaft corresponding to the clutch changes with the torque of the clutch, that is, the input shaft X gradually increases in the speed adjustment stage and reaches a stable state. The input shaft Y, however, is always in a stable state in the subsequent stages due to the change of intention.

[0150] As in some other embodiments, if the shift modes of the quasi-target gear and the new target gear are consistent, such as the shift modes of the quasi-target gear and the new target gear are both torque in front-speed in back, or the shift modes of the quasi-target gear and the new target gear are both speed in front-torque in back, the method specifically comprises: determining the target speed of the new target gear according to the shift types of the quasi-target gear and the new target gear.

[0151] Specifically, in this case, since the shift pattern of the quasi-target gear position and the shift pattern of the new target gear position are consistent, i.e. the shift pattern in the shift process currently being performed is consistent with the shift pattern in the shift process to be switched, it indicates that there is no need to switch the power type, and only the speed adjustment needs to be performed.

[0152] For example, if the shift patterns of the quasi-target gear position and the new target gear position are both speed in front-torque in back, if the quasi-target gear position, i.e. the shift of the power downshift, is in the shaft engagement stage, if the driver requests a lower gear at this time, the shaft engagement continues to complete the next stage after the combination of the final target gear position, responds to the intention shift request, and performs the switching of the shift process of the quasi-target shift process to the shift process of the new target shift. Since the shift patterns are consistent, the shaft engagement stage is continued, i.e. the target speed is recalculated according to the current new target gear position and enters the speed phase.

[0153] For another example, when the shift patterns of the quasi-target gear position and the new target gear position are both torque in front-speed in back, such as Figure 9 as shown, the quasi-target gear position performs a shift of a non-power downshift, when the driver performs a pedal operation, i.e. the shift intention changes, the vehicle needs to meet the intention of the driver, and immediately performs a shift process of a power upshift. During the non-power downshift, the pedal operation does not change the shift type, and the shift ends after the engine speed reaches the target speed.

[0154] As shown in Figure 9 , in the speed adjustment stage, if it is determined through the energy calculation of the clutch that the energy condition is met, the switching from the process of the non-power upshift to the process of the power upshift is performed, i.e. the shift intention of the driver changes in the speed adjustment stage. That is, the actual gear position in the figure, as the quasi-target gear position, its shift process switches to the target gear position in the speed adjustment stage. Correspondingly, the pedal opening appears a rising edge in this stage, and the torque of the clutch Y decreases to the stable state of disengagement after the speed adjustment stage, while the clutch X appears a rise after the speed adjustment stage to realize the shift.

[0155] Correspondingly, for the shift pattern of the quasi-target gear position and the shift pattern of the new target gear position are both speed in front-torque in back, the speed can also be updated to realize the switching of the gear process.

[0156] It can be understood that in the embodiments of the present application, when the switching of the shift process capable of executing the new target gear is determined through the shift process of the quasi-target gear, the shift mode of the quasi-target gear and the new target gear is further determined, and when the shift modes of the two are consistent, since the power type does not change, the target speed is directly recalculated when the shift process is switched, so that the corresponding operating mechanism executes the target speed, and the switching of the shift process is realized; when the shift modes of the two are inconsistent, the gear type to be entered is first determined according to the shift stage of the current quasi-target gear and the new target gear, and the target speed is recalculated, and then the corresponding operating mechanism executes the shift process of the new target gear according to the determined gear type to be entered and the target speed, so as to realize the shift adjustment representing the intention of the driver in the current shift process, timely and flexibly meet the demand of the driver, and improve the driving experience.

[0157] It can also be understood that for the in-gear stage in the two different shift modes, that is, the current quasi-target shift process is completed, that is, it has ended. In this state, in practice, if a shift request is detected, it means that it is a new shift request at the next moment, that is, the shift process of the next shift request can be executed according to the time sequence.

[0158] It can also be understood that in some embodiments of the present application, when it is determined that the shift stage of the quasi-target gear is in the torque stage, the shift process is not allowed to be switched since the stage is combined with the stage of the side clutch being engaged.

[0159] In some embodiments of the present application, after the stage receives the intended shift request, it can enter the waiting stage, that is, the torque stage of the current quasi-target gear continues to be executed. After the stage is completed, it enters the speed adjustment stage to realize the flexible change of the shift process.

[0160] That is, for each stage of the two shift modes except the speed adjustment stage, the torque stage cannot execute any intended shift request, that is, if the driver changes the intention in the Torque stage, the Torque stage of the current quasi-target gear shift continues, and after it is completed, it enters the next target stage. In some embodiments of the present application, when the shift stage of the quasi-target gear in the shift state is in the torque stage, the switching process of the new target gear is not allowed to be executed.

[0161] For example, in the case that the quasi-target gear is power upshift and the new target gear is power downshift, the torque stage of the power upshift shift process is changed to power downshift, that is, the current torque stage is continued, and after it is ended, it enters the speed stage of the power downshift, and the target speed is recalculated.

[0162] For example, in the case that the quasi-target gear is power upshift and the new target gear is power downshift, the torque stage of the power upshift shift process is changed to power downshift, that is, the current torque stage is continued, and after it is ended, it enters the speed stage of the power downshift, and the target speed is recalculated. Figure 10As shown, the actual gear, i.e. the quasi-target gear is power upshift, and proceeds to the torque phase. At this time, an intended shift request indicating power downshift is received, i.e. in this phase, the accelerator opening degree rises, indicating that the driver's intention changes, and the process of power downshift needs to be performed. Then the clutch X and the clutch Y are continuously executed.

[0163] It can be understood that, in the torque phase of the combined side combination in the embodiment of the application, in order to be able to implement the intended shift request, after the completion of the phase, the intended shift request reflecting the change of the driver's intention is immediately responded to, so as to perform the shift process switching operation in response to the shift process switching operation in the speed adjustment phase after the end of the torque phase, so as to realize the timely adjustment of the gear transformation in the gear transformation process, meet the flexible control of the driver on the vehicle running state, and improve the driving experience.

[0164] In order to better understand the shift control method provided by the embodiment of the application, the following will be described in detail. Figure 11

[0165] As shown in the figure, the method specifically comprises: Figure 11

[0166] S01, whether to enter the shift process of the quasi-target gear.

[0167] S02, whether an intended shift request is received, the intended shift request being used to switch the shift process.

[0168] S03, determining the shift mode of the quasi-target gear and the new target gear, the shift type of the quasi-target gear and the new target gear, and the current shift phase of the quasi-target gear.

[0169] S04, determining whether the shift phase of the quasi-target gear is in the speed adjustment phase.

[0170] S05, determining whether the clutch energy of the quasi-target gear and the new target gear meets the energy condition.

[0171] S06, determining whether the shift phase of the quasi-target gear is in the switchable phase.

[0172] S07, when the clutch energy of the quasi-target gear and the new target gear meets the energy condition, or when the clutch energy of the quasi-target gear and the new target gear meets the energy condition, instructing the actuator to perform the shift process switching.

[0173] Specifically, in the embodiment of the application, in order to improve the flexibility of vehicle driving, when the controller receives the shift request of the quasi-target gear during operation, it indicates that the vehicle currently enters the shift phase.

[0174] ​​Further, after entering the quasi-target shift stage, the state parameters of the vehicle are detected in real time to determine whether the driver has changed the shift intention, i.e. when the analysis of the state parameters determines that the driver has changed the shift intention, an intention shift request indicating the change of the driver's shift intention is generated, and the new target gear of the driver's shift intention is represented.

[0175] i.e. when the intention shift request is obtained, the current shift stage of the quasi-target gear is determined, and when it is determined that the shift stage is the speed adjustment stage, the current clutch available energy of the quasi-target gear and the clutch required energy of the new target gear are further determined.

[0176] Further, when the clutch energy determined satisfies the energy condition, it indicates that the shift from the shift process of the quasi-target gear to the shift process of the new target gear can be performed.

[0177] Alternatively, on the other hand, when the shift stage of the quasi-target gear is not in the speed adjustment stage, it is further determined whether the shift process of the quasi-target gear is in the switchable stage, such as the start stage, the shaft engagement stage, the oil filling stage, etc. When it is in the allowable stage, it indicates that the shift from the shift process of the quasi-target gear to the shift process of the new target gear can be performed.

[0178] Further, when it is determined that the shift from the shift process of the quasi-target gear to the shift process of the new target gear can be performed through the above analysis, the shift of the new target gear can be performed according to the shift timing of the quasi-target gear and the new target gear, i.e. the switching instruction can be generated to instruct the actuator to perform the shift process of the new target gear according to the shift parameters determined in the above embodiments.

[0179] It can be understood that the shift control method, the controller and the vehicle provided by the present application, in the shift process of the current quasi-target gear position of the vehicle controller, when the shift request indicating the change of the driver's intention is obtained, the gear state of the quasi-target gear position is determined, and it is determined whether the shift process from the quasi-target gear position to the shift process of the new target gear position is allowed according to the gear state. When it is determined that the shift process of the new target gear position is allowed to be switched in, the shift process of the quasi-target gear position is terminated, and the shift parameter of the new target gear position is determined according to the shift type of the quasi-target gear position and the new target gear position, so that the vehicle enters the new gear position meeting the driver's intention at the next moment, thereby guiding the driver's intention, and realizing the timely and flexible adjustment of the gear position switching of the vehicle according to the current shift state of the vehicle. That is, in the above process, after the shift request indicating the change of the driver's intention is received in the shift process of the current quasi-target gear position, it is determined whether the shift process of the current quasi-target gear position can be adjusted according to the shift state of the quasi-target gear position, and when it is determined that the adjustment can be made, the shift process of the new target gear position indicating the latest intention of the driver is entered in time, the driving state of the vehicle is flexibly adjusted, the driving demand of the driver is met in real time, and the driving experience is finally improved.

[0180] In another aspect, the present application provides a shift control device, as shown in the figure, the device comprises: Figure 12

[0181] The obtaining module 210 is configured to obtain the shift request, the shift request indicating the gear change intention of the driver of the vehicle, and the shift request including the shift type corresponding to the new target gear position.

[0182] The first determining module 220 is configured to determine the shift state of the quasi-target gear position currently executed, the quasi-target gear position being the gear position to be executed indicated by the shift request received at the last moment, and the shift request including the shift type of the quasi-target gear position.

[0183] The second determining module 230 is configured to determine the shift parameter of the new target gear position according to the shift type of the quasi-target gear position and the new target gear position when the shift state indicates that the shift process from the quasi-target gear position to the shift process of the new target gear position is allowed to be switched, and the shift parameter being used to instruct the shift execution mechanism to execute the shift process of the new target gear position.

[0184] Optionally, the shift control device provided by the present application comprises:

[0185] The first determining unit 221 is configured to determine the shift stage of the quasi-target gear position currently executed.

[0186] ​The second determining unit 222 determines the current available energy of the clutch corresponding to the quasi-target gear when the shift stage is the speed adjustment stage; and if the current available energy of the clutch meets the energy condition, it indicates that the shift process from the quasi-target gear to the shift process of the new target gear is allowed to switch.

[0187] Optionally, the shift control device provided by the embodiment of the present application, the energy condition comprises that the available energy is not less than the required energy of the clutch of the new target gear, and the third determining unit 223 is configured to:

[0188] determine the required energy of the clutch of the new target gear.

[0189] Optionally, the shift control device provided by the embodiment of the present application, the second determining unit is configured to:

[0190] determine the current actual slip friction energy of the clutch corresponding to the quasi-target gear according to the current slip of the clutch corresponding to the quasi-target gear and the current clutch torque;

[0191] determine the difference between the maximum clutch slip friction energy and the actual slip friction energy as the current available energy of the clutch corresponding to the quasi-target gear.

[0192] Optionally, the shift control device provided by the embodiment of the present application, the third determining unit is configured to:

[0193] determine the product of the target slip of the clutch corresponding to the new target gear, the clutch torque corresponding to the new target gear and the minimum speed corresponding to the new target gear;

[0194] integrate the product in the execution period to obtain the required energy.

[0195] Optionally, the shift control device provided by the embodiment of the present application, the shift stage further comprises a start stage, a shaft gear stage and an oil filling stage, a speed adjustment stage and an in-gear stage, and if the current shift stage of the quasi-target gear is not the speed adjustment stage, when the current shift stage of the quasi-target gear is the start stage, the shaft gear stage or the oil filling stage, it indicates that the shift process from the quasi-target gear to the shift process of the new target gear is allowed to switch.

[0196] Optionally, the shift control device provided by the embodiment of the present application, the acquisition module 210 is specifically configured to:

[0197] acquire the current state parameter of the vehicle.

[0198] determine the new target gear according to the state parameter, and generate an intended shift request according to the new target gear.

[0199] Optionally, the shift control device provided by the embodiment of the present application, the second determining module is specifically configured to:

[0200] The shift mode corresponding to the new target gear is determined according to the shift type of the new target gear, and the shift mode includes torque first-speed second or speed first-torque second;

[0201] When the shift modes corresponding to the quasi-target gear and the new target gear are inconsistent, the gear to be entered by the new target gear and the target rotating speed are determined according to the shift types of the quasi-target gear and the new target gear;

[0202] Or, when the shift modes corresponding to the quasi-target gear and the new target gear are consistent, the target rotating speed of the new target gear is determined according to the shift types of the quasi-target gear and the new target gear.

[0203] In another aspect, the embodiment of the present application further provides a controller, which can be a vehicle control unit (VCU) and can perform data transmission with the navigation system.

[0204] The controller includes a processor, a memory, and computer program instructions stored in the memory and executable on the processor, and the processor is configured to implement the vehicle thermal management energy-saving method as described above when executing the computer program instructions.

[0205] In another embodiment of the present application, a vehicle is also provided, which includes the controller of the above-mentioned embodiment.

[0206] In another aspect, the controller provided by the embodiment of the present application further includes a memory, a processor, and computer program instructions stored in the memory and executable on the processor, and the processor is configured to implement the shift control method as described above when executing the program.

[0207] Reference will be made to the accompanying drawings Figure 13 , Figure 13 The structure of the electronic device of the controller of the embodiment of the present application is shown in the figure.

[0208] As Figure 13As shown, the electronic device of the controller includes a central processing unit (CPU) 301, which can perform various appropriate actions and processes in accordance with a program stored in a read only memory (ROM) 302 or a program loaded from a storage section 308 into a random access memory (RAM) 303. In the RAM 303, various programs and data required for the operation of the electronic device 300 are also stored. The CPU 301, the ROM 302, and the RAM 303 are connected to each other through a bus 304. An input / output (I / O) interface 305 is also connected to the bus 304. In some embodiments, the following components are connected to the I / O interface 305: an input section 306 including a keyboard, a mouse, etc.; an output section 307 including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; the storage section 308 including a hard disk, etc.; and a communication section 309 including a network interface card such as a LAN card, a modem, etc. The communication section 309 performs communication processing via a network such as the Internet. A drive 310 is also connected to the I / O interface 305 as necessary. A removable media 311 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is attached to the drive 310 as necessary, so that a computer program read therefrom is installed into the storage section 308 as necessary. In particular, the processes described above with reference to the flowcharts can be implemented as a computer software program in accordance with embodiments of the present application. For example, embodiments of the present application include a computer program product comprising a computer program carried on a machine-readable medium, the computer program comprising program code for executing the methods illustrated by the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via the communication section 309, and / or installed from the removable media 311. When the computer program is executed by the central processing unit (CPU) 301, the above-described functions defined in the electronic device of the present application are performed.

[0209] It should be noted that the computer-readable medium in the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination thereof. The computer-readable storage medium may, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor electronic device, device or apparatus, or any combination thereof. More specific examples of computer-readable storage media can include, but are not limited to, an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present application, the computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution electronic device, device or apparatus. In the present application, the computer-readable signal medium can include a data signal carried in a baseband or as a part of a carrier wave, which carries computer-readable program code. Such a propagated data signal can take many forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination thereof. The computer-readable signal medium can also be any computer-readable medium other than the computer-readable storage medium, which can send, propagate or transmit a program for use by or in conjunction with an instruction execution electronic device, device or apparatus. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wire, optical cable, RF, etc., or any suitable combination thereof.

[0210] The flowcharts and block diagrams in the drawings illustrate the possible implementation architectures, functions and operations of electronic devices, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowcharts or block diagrams can represent a module, a program segment or a part of code, which contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur in different order than that shown in the drawings. For example, two blocks that are shown in succession can actually be executed substantially in parallel, and they can also be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and the combination of blocks in the block diagrams and / or flowcharts, can be implemented by a dedicated hardware-based electronic device that performs the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0211] The units or modules described in the embodiments of the present application can be implemented by software or by hardware. The described units or modules can also be arranged in a processor.

[0212] As another aspect, the present application also provides a computer readable storage medium, which can be included in the electronic device described in the above embodiments, or can exist separately without being assembled into the electronic device. The computer readable storage medium stores one or more computer programs, when the computer programs are used by one or more processors to execute the shift control method described in the present application: obtaining an intended shift request, the intended shift request indicating a current gear shift intention of a driver of a vehicle, the intended shift request including a shift type corresponding to a new target gear; determining a shift state of a current executed quasi-target gear, the quasi-target gear being a gear to be executed indicated by a shift request received at a previous time, the shift request including a shift type of the quasi-target gear; when the shift state indicates that a shift process from the quasi-target gear to the new target gear is allowed to switch, determining a shift parameter of the new target gear according to the shift types of the quasi-target gear and the new target gear, the shift parameter being used to instruct a shift execution mechanism to execute a shift process of the new target gear.

[0213] It should be understood that, in the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0214] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A shift control method characterized by, The method comprises: obtaining an intention shift request, the intention shift request representing a current gear shift intention of a driver, and the intention shift request comprising a shift type corresponding to a new target gear; determining a shift state of a current execution of a quasi-target gear, the quasi-target gear being a gear to be executed indicated by a shift request received at a previous time, and the shift request comprising a shift type of the quasi-target gear; when the shift state indicates that a shift process of the quasi-target gear is allowed to switch to a shift process of the new target gear, determining a shift parameter of the new target gear according to the shift types of the quasi-target gear and the new target gear, the shift parameter being used to instruct a shift execution mechanism to execute the shift process of the new target gear; the shift state comprises a shift stage currently occupied by the quasi-target gear and a current available energy of a clutch, and the determining of the shift state of the current execution of the quasi-target gear comprises: determining a shift stage currently occupied by the quasi-target gear, the shift stage comprising a speed adjustment stage; when the shift stage is the speed adjustment stage, determining a current available energy of the clutch corresponding to the quasi-target gear; wherein, if the current available energy of the clutch satisfies an energy condition, it indicates that the shift process of the quasi-target gear is allowed to switch to the shift process of the new target gear; the determining of the current available energy of the clutch corresponding to the quasi-target gear comprises: determining an actual slip friction energy of the clutch corresponding to the quasi-target gear according to a current slip of the clutch and a current clutch torque of the clutch corresponding to the quasi-target gear; determining a difference between a maximum clutch slip friction energy and the actual slip friction energy as the current available energy of the clutch corresponding to the quasi-target gear.

2. The shift control method according to claim 1, characterized by, the energy condition comprises that the available energy is not less than a required energy of a clutch of the new target gear, the shift control method further comprises: determining the required energy of the clutch of the new target gear.

3. The shift control method according to claim 2, characterized by, the determining of the required energy of the clutch of the new target gear comprises: determining a product of a clutch target slip corresponding to the new target gear, a clutch torque corresponding to the new target gear, and a minimum speed corresponding to the new target gear; integrating the product within a shift execution switching time to obtain the required energy.

4. The shift control method according to claim 1, characterized by, the shift stage further comprises a start stage, an axle gear engagement stage, an oil filling stage, a torque stage, and an in-gear stage, if the shift stage currently occupied by the quasi-target gear is not the speed adjustment stage, and when the shift stage currently occupied by the quasi-target gear is the start stage, the axle gear engagement stage, or the oil filling stage, it indicates that the shift process of the quasi-target gear is allowed to switch to the shift process of the new target gear.

5. The shift control method according to any one of claims 1-4, characterized by, the obtaining of the intention shift request comprises: obtaining a current state parameter of a vehicle; determining the new target gear according to the state parameter, and generating the intention shift request according to the new target gear.

6. The shift control method according to claim 5, characterized by, the determining of the shift parameter of the new target gear according to the shift types of the quasi-target gear and the new target gear comprises: determining a shift mode corresponding to the new target gear according to a shift type of the new target gear, the shift mode including torque first-speed second or speed first-torque second; when the shift modes corresponding to the quasi target gear and the new target gear are inconsistent, determining a gear to be entered by the new target gear and a target rotating speed of the new target gear according to shift types of the quasi target gear and the new target gear; or, when the shift modes corresponding to the quasi target gear and the new target gear are consistent, determining a target rotating speed of the new target gear according to shift types of the quasi target gear and the new target gear.

7. A controller characterized by comprising: The controller comprises a processor, a memory, and computer program instructions stored on the memory and executable on the processor, and the processor, when executing the computer program instructions, is configured to implement the shift control method according to any one of claims 1 to 6.

8. A vehicle characterized by comprising: The vehicle comprises the controller according to claim 7. The vehicle comprises the controller according to claim 7.

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