Gear shifting control method, device and system of vehicle gearbox

Abstract

The invention discloses a gear shifting control method, device and system for a vehicle gearbox, and belongs to the technical field of vehicle control. The method comprises the steps that a gear shifting request is received; under the condition that the current actual input power of the input shaft of the gearbox does not meet the gear shifting condition, an auxiliary gear shifting mode is started, and under the condition that the actual input power meets the auxiliary condition, the actual input power is adjusted according to the auxiliary gear shifting mode; and under the condition that the adjusted actual input power of the input shaft meets the gear shifting condition, gear shifting operation is executed according to the gear shifting request. By means of the method, when the gearbox of the vehicle does not meet the gear shifting condition, the input power of the gearbox can be adjusted according to the auxiliary gear shifting mode, buffering and protecting space is provided for the gearbox, and the problems of gear shifting impact and the like caused by forced gear shifting are effectively avoided.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a gear shift control method, device and system for a vehicle transmission. Background Art

[0002] When a vehicle is driving, when driving conditions such as vehicle speed, load, and road conditions change, it is usually necessary to perform gear shifting operations on the vehicle to adapt to different driving conditions and requirements.

[0003] In order to ensure the comfort, safety, economy, etc. of the vehicle during driving, the gear shifting process needs to be as smooth as possible and the gear shifting time should be as short as possible. In the relevant technology, the gear shifting process of the vehicle can be mainly divided into two steps, including: firstly, the engine speed is adjusted by the motor at the engine end so that the engine speed is adapted to the current vehicle speed; then, the clutch is engaged so that the engine end after speed adjustment is coupled with the wheel end.

[0004] However, the related technology has at least the following technical problems: when adjusting the engine speed, the motor speed control requirement on the engine side is high, and the motor needs to adjust the engine to the target speed within a short response time. In addition, when the motor fails to achieve the speed adjustment target within the target time, the clutch is forced to engage to complete the coupling between the engine side and the wheel side, which will also cause problems such as gear shift shock and clutch hardware wear. Summary of the invention

[0005] The present application provides a vehicle gearbox shift control method, device and system to solve the technical problems existing in the related art, including the following technical solutions.

[0006] In a first aspect, the present application provides a gear shift control method for a vehicle gearbox, comprising: receiving a gear shift request; entering an auxiliary gear shift mode when the current actual input power of the input shaft of the gearbox does not meet the gear shift condition; adjusting the actual input power according to the auxiliary gear shift mode when the actual input power meets the auxiliary condition; and performing a gear shift operation according to the gear shift request when the adjusted actual input power meets the gear shift condition.

[0007] In some possible implementations, the shift condition includes: a time duration during which a difference between the actual input power and an expected input of the transmission corresponding to the shift request falls within a first difference range within a first preset time period reaches a first time threshold.

[0008] In some other possible implementations, the auxiliary condition includes: the time duration during which the difference between the actual input power and the expected input of the transmission corresponding to the shift request falls within a second difference range within a second preset time period reaches a second time threshold.

[0009] In some further possible implementations, the gearbox includes a clutch, and adjusting the actual input power according to the auxiliary shift mode includes: controlling the clutch to enter a slipping state to adjust the actual input power.

[0010] In some further possible implementations, the gearbox includes a first motor drivingly connected to the input shaft, and the actual input power includes: a current rotational speed of the first motor.

[0011] In some other possible implementations, the gearbox includes a second motor drivingly connected to an output shaft of the gearbox. After receiving the gear shift request, the method further includes: determining the expected input based on a rotational speed of the second motor and a transmission ratio between the input shaft and the output shaft corresponding to the gear shift request.

[0012] In some other possible implementations, the vehicle transmission shift control method further includes: in response to the actual input power of the input shaft of the transmission satisfying the shift condition, performing a shift operation according to the shift request.

[0013] In some other possible implementations, the entering the auxiliary shift mode further includes: in response to the actual input power of the input shaft adjusted according to the auxiliary shift mode not satisfying the shift condition, terminating the current shift request.

[0014] In a second aspect, the present application provides a shift control device for a vehicle transmission, comprising: a receiving module for receiving a shift request; a control module for entering an auxiliary shift mode when the current actual input power of the input shaft of the transmission does not meet the shift condition; adjusting the actual input power according to the auxiliary shift mode when the actual input power meets the auxiliary condition; and the control module is also used to perform a shift operation according to the shift request when the adjusted actual input power meets the shift condition.

[0015] In some possible implementations, the shift condition includes: a time duration during which a difference between the actual input power and an expected input of the transmission corresponding to the shift request falls within a first difference range within a first preset time period reaches a first time threshold.

[0016] In some other possible implementations, the gearbox includes a clutch, and the control module is further used to control the clutch to enter a slipping state to adjust the actual input power.

[0017] In some further possible implementations, the gearbox includes a first motor drivingly connected to the input shaft, and the actual input power includes: a current rotational speed of the first motor.

[0018] In some other possible embodiments, the gearbox includes a second motor drivingly connected to the output shaft of the gearbox. After receiving the gear shift request, the control module is further used to determine the expected input based on the rotational speed of the second motor and the transmission ratio between the input shaft and the output shaft corresponding to the gear shift request.

[0019] In some further possible implementations, the control module is further configured to execute a gear shift operation according to the gear shift request in response to a current actual input power of the input shaft of the gearbox satisfying a gear shift condition.

[0020] In some further possible implementations, the control module is further configured to terminate the current gear shift request in response to the actual input power of the input shaft adjusted according to the auxiliary gear shift mode not satisfying a gear shift condition.

[0021] In a third aspect, the present application provides a computer-readable storage medium having stored thereon program instructions for vehicle transmission shift control. When the program instructions are executed by the control unit, the method in the first aspect of the present application or any possible implementation scheme of the first aspect is implemented.

[0022] In a fourth aspect, an electronic device is provided, comprising a memory and a processor, wherein the memory stores at least one computer program, and the at least one computer program is loaded and executed by the processor so that the electronic device implements the method in the first aspect of the present application or any possible implementation manner of the first aspect.

[0023] In the fifth aspect, the present application provides a vehicle system for gear shift control of a gearbox, comprising: a gearbox for adjusting the gear position of the vehicle; a controller, the controller being communicatively connected to the gearbox, and being used to execute the method in the first aspect of the present application or any possible implementation manner of the first aspect, so as to control the gear shift of the gearbox.

[0024] In a sixth aspect, a computer program (product) is provided, which includes a computer program / instructions, and the computer program / instructions are executed by a processor to enable a computer to implement the method in the first aspect or any possible implementation of the first aspect.

[0025] The beneficial effects of the technical solution provided by this application include at least:

[0026] Compared with the method of receiving a gear shift request and adjusting the speed, and then directly executing the gear shift operation, the present application identifies the current actual input power of the input shaft of the gearbox during gear shifting through the gear shift conditions, so that gear shift requests that may cause gear shift shock or still cause gear shift shock after motor speed adjustment can enter the auxiliary gear shift mode to avoid gear shift shock.

[0027] In addition, the present application also identifies the current actual input power of the input shaft of the gearbox during gear shifting through auxiliary conditions, so that the gear shifting requests that meet the auxiliary conditions can be completed with the assistance of the auxiliary gear shifting mode, thereby reducing the requirements for motor speed control, so that some gear shifting requests that still cause gear shifting shock after motor speed adjustment can be completed with the assistance of the auxiliary gear shifting mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 is a structural schematic diagram of a vehicle transmission system provided in an embodiment of the present application;

[0030] Figure 2 is a flow chart of a gear shift control method for a vehicle transmission provided in an embodiment of the present application;

[0031] Figure 3 is a structural schematic diagram of a shift control device for a vehicle transmission provided in an embodiment of the present application;

[0032] Figure 4 is a schematic diagram of the structure of an electronic device for vehicle transmission shift control provided in an embodiment of the present application;

[0033] Figure 5 It is a schematic diagram of a vehicle system for gear shift control of a transmission provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0036] The process of vehicle shifting is essentially to adjust the transmission ratio of the vehicle's transmission system, thereby changing the torque and speed output from the vehicle's engine to the wheel. During vehicle driving, shifting can optimize the vehicle's power output, making the engine speed adapt to the current wheel speed, which plays an important role in optimizing vehicle performance and improving vehicle driving safety, economy, and comfort.

[0037] Among them, the gear shifting operation is usually achieved through the gearbox. The input shaft and output shaft of the gearbox are directly or indirectly connected to the engine end and the wheel end respectively, and are the core components of the transmission system. The gearbox can adjust the torque and speed output from the engine end to the wheel end by changing the transmission ratio between the input shaft and the output shaft to complete the gear shifting operation and adapt to different driving conditions of the vehicle.

[0038] Figure 1 is a schematic diagram of the structure of the vehicle transmission system provided in the embodiment of the present application, see Figure 1 The engine end of the vehicle transmission system 100 may include an engine 101; the wheel end of the vehicle may include a wheel drive shaft 102; the gearbox of the vehicle may include a clutch 103, a first motor 104, a second motor 105, an input shaft 106 and an output shaft 107.

[0039] like Figure 1 As shown, the engine 101 at the engine end of the vehicle is connected to the gearbox through the input shaft 106 of the gearbox, and the wheel drive shaft 102 at the wheel end of the vehicle is connected to the gearbox through the output shaft 107 of the gearbox. The power output from the engine end can be transmitted to the wheel end through the gearbox to drive the vehicle forward. The first motor 104 located at the input shaft 106 of the gearbox is connected to the input shaft 106 of the gearbox in a transmission manner and can be used to adjust the speed of the engine 101. The second motor 105 located at the output shaft 107 of the gearbox can drive the wheel rotating shaft 102 to rotate. A clutch 103 is provided between the input shaft 106 and the output shaft 107 of the gearbox, which can be used to disconnect or connect the power transmission between the engine 101 and the wheel drive shaft 102.

[0040] When the vehicle shifts gears, the gearbox controls the clutch 103 to disconnect the power transmission between the engine 101 and the wheel drive shaft 102, and the gearbox adjusts the transmission ratio between the input shaft 106 and the output shaft 107 of the gearbox. Then, the gearbox controls the clutch 103 to reconnect the power transmission between the engine 101 and the wheel drive shaft 102.

[0041] Among them, when the power transmission between the engine 101 and the wheel drive shaft 102 is disconnected, the input shaft 106 of the gearbox includes a first end connected to the engine 101 and a second output end connected to the wheel drive shaft 102. At this time, the speed of the engine 101 can be adjusted to the desired speed by the first motor 104, and the speed of the first section connected to the engine 101 is consistent with that of the engine and is input into the input shaft 106 of the gearbox from the first end; while the second end of the input shaft 106 of the gearbox connected to the wheel drive shaft 102 continues to be connected to the wheel drive shaft 102, and the speed of the second end changes when the transmission ratio between the input shaft 106 and the output shaft 107 of the gearbox is adjusted inside the gearbox. When the power transmission between the engine 101 and the wheel drive shaft 102 is connected again, the adjusted speed of the engine 101 should be adapted to the speed of the wheel drive shaft 102, otherwise it will cause the speed difference between the first end and the second end of the input shaft 106 of the gearbox to be too large, thereby causing gear shift shock.

[0042] As mentioned above, in the related technology, the method of regulating the engine speed through the motor and then directly shifting gears is highly dependent on the motor control, requiring the motor to have a relatively wide adjustment range and precise adjustment ability for the engine speed, and the technical difficulty is relatively high. In addition, when the motor fails to achieve the speed regulation target, the actual input power of the input shaft of the gearbox will be too different from the expected input of the input shaft of the gearbox during the gear shift. At this time, the forced combination of the driving gear and the driven gear of the clutch will cause gear shift shock, causing problems such as wear of the clutch hardware.

[0043] In view of this, an embodiment of the present application provides a method for controlling vehicle transmission shifting, which optimizes the vehicle's shifting process. Before the shifting operation, the current actual input power of the transmission input shaft is identified through shifting conditions and auxiliary conditions, thereby avoiding shifting shock and reducing the requirements for engine speed regulation, making the shifting process more scientific and reasonable, thereby solving the technical problems mentioned above and ensuring the safety and smoothness of the shifting process.

[0044] Figure 2 is a flow chart of a shift control method for a vehicle transmission provided in an embodiment of the present application. The method may be executed by a control system installed in a vehicle, for example, and the present application is not limited in this regard. Figure 2The vehicle transmission shift control method provided in the embodiment of the present application may include the following steps:

[0045] Step S210, receiving a gear shift request.

[0046] The shift request may be, for example, issued by the vehicle when the driver operates the clutch and the gear lever, or automatically issued by the vehicle, based on the driving conditions of the vehicle, the performance requirements of the vehicle, etc. In some embodiments, the shift request may be issued, for example, by an HCU (Hybrid Control Unit), a V CU (Vehicle Control Unit), a PDCU (Powertrain Domain Control Unit), or any other control system that can communicate with the gearbox and control the gearbox to perform a shift operation, through a communication network carried by the vehicle. The communication network carried by the vehicle may be, for example, a CAN (Controller Area Network) bus, a LIN (Local Interconnect Network) bus, a FlexRay (Flexible Ray) bus, an in-vehicle Ethernet, or any other communication network, and the embodiments of the present application do not impose any restrictions in this regard.

[0047] Step S220: When the actual input power of the input shaft of the gearbox does not satisfy the gear shifting condition, the auxiliary gear shifting mode is entered.

[0048] Among them, the current actual input power of the input shaft of the gearbox can be used to indicate the current rotation speed of the vehicle wheel end, and the gear shifting condition can be used to identify the current actual input power of the input shaft. As mentioned above, during the gear shifting process, the engine speed after adjustment should be adapted to the rotation speed of the vehicle wheel end, otherwise it will cause gear shifting shock. In view of this, after receiving the gear shifting request, the current actual input power of the gearbox can be identified through the gear shifting condition to determine whether the current actual input power of the input shaft of the gearbox will cause gear shifting shock when the gear shifting request is received. If the gear shifting request will cause gear shifting shock, the auxiliary gear shifting mode is entered, thereby avoiding problems such as gear shifting shock that may be caused by direct gear shifting.

[0049] In order to facilitate the acquisition of the actual input power of the input shaft of the gearbox, a motor drivingly connected to the input shaft of the gearbox may be provided at the input shaft of the gearbox, and the current actual input power of the input shaft of the gearbox is indicated by the rotation speed of the motor. In one embodiment, the gearbox may include, for example, a first motor drivingly connected to the input shaft of the gearbox, and the current actual input power of the input shaft of the gearbox may include, for example, the current rotation speed of the first motor.

[0050] In one embodiment, the shifting condition may include, for example: the difference between the current actual input power of the input shaft of the gearbox and the expected input of the gearbox corresponding to the gearshift request, and the duration of falling into the first difference range within the first preset time period reaches the first duration threshold. The setting of the first difference range may refer to the following standard: the range of values ​​formed by the maximum and minimum values ​​of the expected input that may cause the gear shift shock, centered on the current actual input power. The first preset time period may be used to ensure the instantaneousness of the gear shifting process; the first duration threshold may be used to provide a fluctuation space for the current actual input power of the input shaft of the gearbox, and those skilled in the art may adjust it according to the actual application situation, and the present application does not impose any restrictions in this regard.

[0051] The expected input of the gearbox can be used to indicate the expected speed of the vehicle engine corresponding to the gear shift request when shifting. As mentioned above, the purpose of shifting can be, for example, to optimize the power output of the vehicle so that the engine speed is adapted to the current speed of the wheel. In other words, the process of shifting is to adjust the engine speed according to the current speed of the wheel so that the engine speed reaches the expected speed. In view of this, in order to facilitate calculation, the expected input of the gearbox can include, for example: the expected speed of the vehicle engine. Further, the expected speed of the engine can be determined, for example, by the current speed of the wheel and the gear shift request. For example, a motor can be set at the output shaft of the gearbox that is transmission-connected to the wheel end of the vehicle, and the expected speed of the engine is determined by the speed of the motor and the gear shift request, thereby determining the expected input of the gearbox. In one embodiment, the gearbox includes a second motor that is transmission-connected to the output shaft of the gearbox. After receiving the gear shift request, the method for controlling the gear shift of the vehicle gearbox also includes: determining the expected input according to the speed of the second motor and the transmission ratio between the input shaft and the output shaft corresponding to the gear shift request.

[0052] The transmission ratio between the input shaft and the output shaft corresponding to the gear shift request may be, for example, the first transmission ratio; and the desired input may be determined according to the rotation speed of the second motor and the transmission ratio between the input shaft and the output shaft corresponding to the gear shift request, for example, by the following formula (1):

[0053] Expected input = speed of the second motor × first transmission ratio formula (1)

[0054] Considering that the current actual input power of the input shaft of the gearbox can be indicated by the rotation speed of the first motor, for the convenience of calculation, the expected input of the input shaft of the gearbox corresponding to the shift request can be further converted into the expected rotation speed of the first motor. In one embodiment, the expected input of the input shaft of the gearbox corresponding to the shift request can be converted into the expected rotation speed of the first motor, for example, according to the expected input of the input shaft of the gearbox and the transmission ratio between the input shaft of the gearbox and the first motor.

[0055] The transmission ratio between the input shaft of the gearbox and the first motor may be, for example, the second transmission ratio. The desired rotational speed of the first motor may be determined according to the desired input of the input shaft of the gearbox and the transmission ratio between the input shaft of the gearbox and the first motor, for example, by the following formula (2):

[0056] Expected speed of the first motor = expected input / second transmission ratio formula (2)

[0057] As described above, the expected input can be determined according to the speed of the second motor and the first transmission ratio. In view of this, the expected speed of the first motor can also be determined according to the speed of the second motor, the first transmission ratio and the second transmission ratio. In one embodiment, determining the expected speed of the first motor according to the speed of the second motor, the first transmission ratio and the second transmission ratio can be achieved, for example, by formula (3) as shown below:

[0058] Expected speed of the first motor = speed of the second motor × first transmission ratio ÷ second transmission ratio Formula (3)

[0059] As described above, the gear shift condition can be used to identify the current actual input power of the input shaft, and determine whether the current actual input power of the input shaft of the gearbox will cause a gear shift shock when a gear shift request is received. If the current gear shift request will cause a gear shift shock, the auxiliary gear shift mode is entered; if it will not cause a gear shift shock, the gear shift operation can be performed according to the gear shift request. In one embodiment, the method for controlling the gear shift of a vehicle gearbox further includes: in response to the current actual input power of the input shaft of the gearbox satisfying the gear shift condition, the gear shift operation is performed according to the gear shift request.

[0060] Step S230: If the actual input power meets the auxiliary condition, the actual input power is adjusted according to the auxiliary shift mode.

[0061] Among them, the auxiliary shift mode can be used to identify the current actual input power of the input shaft according to the auxiliary conditions, and adjust the actual input power of the input shaft of the gearbox that meets the auxiliary conditions. Considering that when adjusting the actual input power that meets the auxiliary conditions, the adjustment ability of the auxiliary shift mode may have a limit in the adjustment range and / or adjustment accuracy. In view of this, the current actual input power of the input shaft of the gearbox can be identified by the auxiliary conditions to determine whether the current actual input power of the input shaft of the gearbox exceeds the adjustment ability of the auxiliary shift mode. If the current actual input power of the input shaft of the gearbox does not exceed the adjustment ability of the auxiliary shift mode, the current actual input power of the input shaft of the gearbox can be adjusted according to the auxiliary shift mode.

[0062] In some embodiments, the auxiliary shift mode can be adjusted by, for example, controlling the speed of the motor connected to the engine end to adjust the actual input power of the input shaft of the gearbox; or, it can be controlled by the clutch in the gearbox to enter a slipping state, so that the clutch is in a semi-coupled state in which the driving gear and the driven gear slide relative to each other to change the speed of the engine, thereby adjusting the actual input power of the input shaft of the gearbox.

[0063] In one embodiment, adjusting the actual input power according to the auxiliary shift mode may include, for example, controlling the clutch in the gearbox to enter a slipping state to adjust the actual input power of the gearbox input shaft. In another embodiment, in order to reduce the degree of wear of the clutch and other hardware in the gearbox under the slipping state, the torque of the input shaft of the gearbox connected to the clutch may also be cleared.

[0064] As mentioned above, when the auxiliary shift mode adjusts the current actual input power of the input shaft of the gearbox, there may be limits on the adjustment range and precision. In order to ensure the effectiveness of the shift program and the efficiency of the shift, auxiliary conditions can be set according to the adjustment range and precision of the auxiliary shift mode and the current actual input power. In one embodiment, the auxiliary conditions may include, for example: the difference between the actual input power and the expected input of the gearbox corresponding to the shift request, and the duration of falling into the second difference range within the second preset time period reaches the second duration threshold. Among them, the setting of the second difference range refers to the following standard: when the current actual input power is adjusted according to the auxiliary shift mode, the difference between the maximum value and the minimum value that the actual input power of the input shaft of the gearbox can reach is set. The second preset time period can be used to ensure the instantaneousness of the shift process; the second duration threshold can be used to provide a fluctuation space for the actual input power of the input shaft of the gearbox. Those skilled in the art can do it according to the actual application situation, and the present application does not make any restrictions in this regard.

[0065] Step S240 , when the actual input power of the input shaft after adjustment meets the gear shifting condition, a gear shifting operation is performed according to the gear shifting request.

[0066] In the embodiment of the present application, the auxiliary shift mode can also be used to identify the actual input power of the input shaft adjusted according to the auxiliary shift mode, so as to execute the shift request corresponding to the actual input power that satisfies the shift condition. The auxiliary shift mode can identify the actual input power of the input shaft adjusted according to the auxiliary shift mode, for example, by judging whether the actual input power of the input shaft adjusted according to the auxiliary shift mode will cause a shift shock according to the shift condition, and if the actual input power of the input shaft adjusted according to the auxiliary shift mode will not cause a shift shock, then perform a shift operation according to the shift request, and adjust the gear position of the vehicle to the gear position corresponding to the shift request.

[0067] Considering that in actual application scenarios, there may be unscientific shift requests received due to driver operation errors, vehicle failures or other situations, so that the shift conditions cannot be met after adjustment according to the auxiliary shift mode. In view of this, for unscientific shift requests, the shift request can be terminated. In one embodiment, the processing procedure of the auxiliary shift mode also includes: in response to the actual input power of the input shaft after adjustment according to the auxiliary shift mode not meeting the shift condition, the shift request is terminated.

[0068] In some embodiments, when there is an unscientific shift request, in order to ensure the safety of vehicle driving, the vehicle transmission shift control method provided in the embodiment of the present application can also issue a warning to remind the driver to drive safely. For example, the warning can be issued by displaying a prompt message on a display screen, or by playing a voice. The present application does not limit the warning method.

[0069] Compared with the method of receiving a shift request and adjusting the speed, and then directly executing the shift operation, the present application identifies the actual current input power of the input shaft of the gearbox during the shift through the shift condition, so that the shift request that may cause a shift shock or still cause a shift shock after the motor speed adjustment can enter the auxiliary shift mode to avoid the shift shock. Furthermore, the present application also identifies the actual current input power of the input shaft of the gearbox during the shift through the auxiliary condition, so that the shift request that meets the auxiliary condition can complete the shift with the assistance of the auxiliary shift mode, so as to reduce the requirements for the motor speed control, so that some shift requests that still cause a shift shock after the motor speed adjustment can complete the shift with the assistance of the auxiliary shift mode.

[0070] In some possible implementations, the present application also provides a shift control device for a vehicle transmission. Figure 3 is a schematic diagram of the structure of the shift control device of the vehicle transmission provided in the embodiment of the present application, see Figure 3 The shift control device 300 of the vehicle transmission provided in the embodiment of the present application includes:

[0071] The receiving module 310 is used to receive a gear shift request.

[0072] The control module 320 is used to enter the auxiliary shift mode when the current actual input power of the input shaft of the transmission does not meet the shift condition; adjust the actual input power according to the auxiliary shift mode when the actual input power meets the auxiliary condition; and perform the shift operation according to the shift request when the adjusted actual input power meets the shift condition.

[0073] In some embodiments, the shift condition includes: a difference between the actual input power and the expected input of the transmission corresponding to the shift request, and a time duration falling within a first difference range within a first preset time period reaches a first time duration threshold.

[0074] In other embodiments, the transmission includes a clutch, and the control module 320 is further configured to control the clutch to enter a slipping state so as to adjust the actual input power.

[0075] In some further embodiments, the gearbox includes a first motor drivingly connected to the input shaft, and the actual input power includes: a current rotational speed of the first motor.

[0076] In some other embodiments, the gearbox includes a second motor drivingly connected to the output shaft of the gearbox. After receiving a gear shift request, the control module 320 is further used to determine the expected input based on the rotational speed of the second motor and the transmission ratio between the input shaft and the output shaft corresponding to the gear shift request.

[0077] In some other embodiments, the control module 320 is further configured to execute a gear shift operation according to a gear shift request in response to the actual input power of the input shaft of the transmission satisfying a gear shift condition.

[0078] In some other possible implementations, the control module 320 is further configured to terminate the current gear shift request in response to the actual input power of the input shaft adjusted according to the auxiliary gear shift mode not satisfying the gear shift condition.

[0079] In some other possible implementations, the present application also provides an electronic device for vehicle transmission shift control. Figure 4 is a structural schematic diagram of an electronic device for vehicle transmission shift control provided in an embodiment of the present application, see Figure 4 The electronic device 400 for vehicle transmission shift control provided in the embodiment of the present application includes:

[0080] The memory 410 stores at least one program instruction for vehicle transmission shift control.

[0081] Processor 420, when the above program instructions are executed by processor 420, the vehicle realizes the above combination Figure 2 The described method and steps of multiple embodiments thereof. Depending on the implementation, the processor 420 may be a CPU (central processing unit), a GPU (graphics processing unit), or one or more types of processors in other general and / or special processors, including but not limited to a DSP (digital signal processor), an ASIC (application specific integrated circuit), an FPGA (field-programmable gate array), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc., and the number of such processors may be determined according to actual needs.

[0082] In some further possible implementations, the present application also provides a vehicle system for controlling gear shifting of a transmission. Figure 5 is a schematic diagram of a vehicle system for gear shift control of a transmission provided in an embodiment of the present application, see Figure 5 , a vehicle system 500 for gear shift control of a transmission provided in an embodiment of the present application includes:

[0083] A gearbox 510, used to adjust the gear position of the vehicle;

[0084] Controller 520, which is connected to the gearbox 510 for executing the above combination Figure 2 The described method and steps of its multiple embodiments are used to control the gear shifting of the transmission 510 .

[0085] In some embodiments, the vehicle system 500 for shift control of a transmission further includes an engine 530 and a wheel end 540. The engine 530 can be used as a first power source of the vehicle to provide power to the vehicle, the wheel end 540 can be used to convert the power provided by the engine 530 into a linear motion of the vehicle to propel the vehicle forward or backward, and the transmission 510 can also be used to disconnect or connect the power transmission between the engine 530 and the wheel end 540.

[0086] In some embodiments, the gearbox 510 includes an input shaft connected to the engine 530 and an output shaft connected to the wheel end 540. When the power transmission between the engine 530 and the wheel end 540 is connected, the power output by the engine 530 can be input into the gearbox 510 through the input shaft and transmitted to the wheel end 540 through the output shaft to drive the vehicle.

[0087] In some embodiments, the gearbox 510 further includes a first motor drivingly connected to the input shaft of the gearbox and a second motor drivingly connected to the output shaft of the gearbox, wherein the first motor can be used to adjust the speed of the engine 530, and the second motor can be used as a second power source of the vehicle to provide power to the vehicle.

[0088] In some embodiments, the transmission 510 also includes a clutch, and the transmission 510 can disconnect or connect the power transmission between the engine 530 and the wheel end 540 through the clutch to perform operations such as shifting gears, changing speeds, and / or changing the vehicle driving mode (for example, driving the vehicle through the engine 530, driving the vehicle through the second motor, or driving the vehicle together with the engine 530 and the second motor).

[0089] In some other possible implementations, the present application further provides a computer program (product), the computer program (product) comprising a computer program / instruction, the computer program / instruction being executed by a processor to enable a computer to implement the above-mentioned combination Figure 2 The method and steps of its various embodiments are described.

[0090] In some other possible implementations, the present application further provides a computer-readable storage medium on which program instructions for vehicle transmission shift control are stored. When the program instructions are executed by one or more processors, the above combined Figure 2 The described method and steps of multiple embodiments thereof. The computer readable storage medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection with one or more wires, a portable disk, 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 of the above.

[0091] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. The term "plurality" refers to two or more, unless otherwise clearly defined.

[0092] The term "and / or" in the embodiments of the present application is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone.

[0093] The above description is only for the purpose of facilitating the understanding of the technical solution of the present application by those skilled in the art, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A gear shift control method for a vehicle transmission, characterized in that: include: receiving a gear shift request; When the actual input power of the input shaft of the gearbox does not meet the gear shifting condition, the auxiliary gear shifting mode is entered: When the actual input power meets the auxiliary condition, adjusting the actual input power according to the auxiliary shift mode; When the adjusted actual input power satisfies the shift condition, a shift operation is performed according to the shift request.

2. The method according to claim 1, characterized in that The shift condition includes: a difference between the actual input power and an expected input of the transmission corresponding to the shift request, and a time duration during which the difference falls within a first difference range within a first preset time period reaches a first time duration threshold.

3. The method according to claim 1, characterized in that The auxiliary condition includes: a time duration during which a difference between the actual input power and an expected input of the transmission corresponding to the shift request falls within a second difference range within a second preset time period reaches a second time threshold.

4. The method according to claim 1, characterized in that: The gearbox includes a clutch, and adjusting the actual input power according to the auxiliary shift mode includes: The clutch is controlled to enter a slipping state to adjust the actual input power.

5. The method according to claim 1, characterized in that The gearbox includes a first motor drivingly connected to the input shaft, and the actual input power includes: a current rotation speed of the first motor.

6. The method according to claim 2 or 3, characterized in that: The gearbox includes a second motor drivingly connected to an output shaft of the gearbox. After receiving the gear shift request, the method further includes: The expected input is determined according to the rotation speed of the second motor and a gear ratio between the input shaft and the output shaft corresponding to the shift request.

7. The method according to claim 1, characterized in that The shift control method of the vehicle transmission further includes: In response to the actual input power of the input shaft of the transmission satisfying a gear shift condition, a gear shift operation is performed according to the gear shift request.

8. The method according to claim 1, characterized in that The step of entering the auxiliary shift mode further includes: In response to the actual input power of the input shaft adjusted according to the auxiliary shift mode not satisfying a shift condition, the current shift request is terminated.

9. A gear shift control device for a vehicle transmission, characterized in that: include: A receiving module, used for receiving a gear shift request; A control module, configured to enter an auxiliary shift mode when the actual input power of the input shaft of the gearbox does not satisfy the shift condition; and to adjust the actual input power according to the auxiliary shift mode when the actual input power satisfies the auxiliary condition; as well as The control module is further configured to execute a gear shift operation according to the gear shift request when the adjusted actual input power satisfies the gear shift condition.

10. A vehicle system for shift control of a transmission, characterized in that: include: The gearbox is used to adjust the gear position of the vehicle; A controller, the controller is communicatively connected to the gearbox, and is used to execute the method described in any one of claims 1-8 to control the gearbox to shift.

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