CN116447315A - Control method, device, equipment and storage medium for speed change and gear shift of hybrid vehicle - Google Patents

Control method, device, equipment and storage medium for speed change and gear shift of hybrid vehicle Download PDF

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Publication number
CN116447315A
CN116447315A CN202310659937.9A CN202310659937A CN116447315A CN 116447315 A CN116447315 A CN 116447315A CN 202310659937 A CN202310659937 A CN 202310659937A CN 116447315 A CN116447315 A CN 116447315A
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CN
China
Prior art keywords
gear
transmission
starting
hybrid vehicle
gear shifting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310659937.9A
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Chinese (zh)
Inventor
李�瑞
吕二华
于维东
裴国权
赵强
张国栋
刘子鹏
杨明臻
卫泽锋
徐利文
张植兴
张延恢
李冶
侯启龙
陈春思
张金鑫
李洋洋
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FAW Jiefang Automotive Co Ltd
Original Assignee
FAW Jiefang Automotive Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by FAW Jiefang Automotive Co Ltd filed Critical FAW Jiefang Automotive Co Ltd
Priority to CN202310659937.9A priority Critical patent/CN116447315A/en
Publication of CN116447315A publication Critical patent/CN116447315A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/60—Inputs being a function of ambient conditions
    • F16H59/66—Road conditions, e.g. slope, slippery
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/50—Inputs being a function of the status of the machine, e.g. position of doors or safety belts
    • F16H59/52—Inputs being a function of the status of the machine, e.g. position of doors or safety belts dependent on the weight of the machine, e.g. change in weight resulting from passengers boarding a bus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/68—Inputs being a function of gearing status
    • F16H59/70—Inputs being a function of gearing status dependent on the ratio established
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/74—Inputs being a function of engine parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
    • F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/60—Inputs being a function of ambient conditions
    • F16H59/66—Road conditions, e.g. slope, slippery
    • F16H2059/663—Road slope
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)

Abstract

The invention discloses a control method, a device, equipment and a medium for speed change and gear shift of a hybrid vehicle. The method comprises the following steps: determining a starting transmission gear according to a starting environment and a starting power mode of the hybrid vehicle; after the hybrid vehicle starts with the starting transmission gear, determining a transmission gear shifting route according to the starting transmission gear, a current power mode and a road gradient; performing shift running according to the transmission shift route; wherein the transmission shift line skips a portion of the full range of the transmission. The embodiment of the invention can improve the smoothness when the vehicle switches the gear of the transmission.

Description

Control method, device, equipment and storage medium for speed change and gear shift of hybrid vehicle
Technical Field
The invention relates to the technical field of gear shifting, in particular to a control method, a device, equipment and a storage medium for speed change and gear shifting of a hybrid vehicle.
Background
In recent years, with the continuous rising of oil prices and the strong support of new energy policies by countries, more and more heavy commercial vehicle users are focusing on new energy vehicle types. The heavy hybrid commercial vehicle is used as a new energy vehicle type, has better fuel-saving advantage compared with the traditional vehicle, can solve the problem of driving mileage anxiety compared with the pure electric vehicle, and is an ideal scheme of the new energy vehicle.
Compared with the traditional fuel oil vehicle, the gear of the gearbox of the hybrid commercial vehicle is more complicated in gear control due to the fact that two sets of power systems of a motor and an engine are involved at the same time. Therefore, how to select a reasonable transmission gear in the current running state of the vehicle according to the working condition of the whole vehicle is also important and difficult for the hybrid electric vehicle, and has great influence on the dynamic property, economy and smoothness of the whole vehicle.
At present, the domestic heavy-duty hybrid commercial vehicle type is less, and the technical route is different from foreign ones. The domestic heavy hybrid commercial vehicle is still in a starting stage, the control method of the speed change and gear shift of the hybrid electric vehicle is still immature, and the method and strategy for gear selection are lacking, so that the dynamic property, economy and smoothness of the vehicle are affected.
Disclosure of Invention
The invention provides a control method, a device, equipment and a storage medium for speed change and gear shift of a hybrid vehicle, which aim to improve smoothness when the vehicle switches a transmission gear.
According to an aspect of the present invention, there is provided a control method of gear shifting of a hybrid vehicle, including:
determining a starting transmission gear according to a starting environment and a starting power mode of the hybrid vehicle;
after the hybrid vehicle starts with the starting transmission gear, determining a transmission gear shifting route according to the starting transmission gear, a current power mode and a road gradient;
performing shift running according to the transmission shift route;
wherein the transmission shift line skips a portion of the full range of the transmission.
According to another aspect of the present invention, there is provided a control device for shifting gears of a hybrid vehicle, including:
the starting gear determining module is used for determining the gear of the starting transmission according to the starting environment and the starting power mode of the hybrid vehicle;
the gear shifting route determining module is used for determining a gear shifting route of the transmission according to the starting transmission gear, the current power mode and the road gradient after the hybrid vehicle starts with the starting transmission gear;
the gear shifting route using module is used for performing gear shifting running according to the gear shifting route of the transmission;
wherein the transmission shift line skips a portion of the full range of the transmission.
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to execute the hybrid vehicle shift control method according to any one of the embodiments of the present invention.
According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to execute a control method for gear shifting of a hybrid vehicle according to any one of the embodiments of the present invention.
According to the embodiment of the invention, the driving condition and the driving intention are identified, before the vehicle starts, the driving mode, the total weight of the vehicle and the ramp signal are collected, the driving force required by the whole vehicle starting is determined by combining the related parameters of the whole vehicle transmission system, and the proper transmission gear is selected to smoothly start; during running, different transmission gear change routes are adopted according to the current driving mode (pure electric mode/hybrid electric mode), so that the frequency of gear shifting is reduced, and the smoothness of the vehicle when the transmission gear is switched is improved.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1A is a flow chart of a method for controlling a hybrid vehicle shift change according to one embodiment of the present invention;
FIG. 1B is a simplified schematic illustration of a heavy duty hybrid commercial vehicle according to an embodiment of the present invention;
FIG. 2A is a flow chart of a method for controlling a hybrid vehicle shift change according to yet another embodiment of the present invention;
fig. 2B is a flow chart of a method for controlling a starting gear of a transmission according to a further embodiment of the invention;
FIG. 2C is a flow chart of shift control during travel according to yet another embodiment of the present invention;
FIG. 3 is a schematic structural view of a control device for gear shifting of a hybrid vehicle according to still another embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device implementing an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1A is a flowchart of a method for controlling gear shifting of a hybrid vehicle according to an embodiment of the present invention, where the method may be implemented by a device for controlling gear shifting of a hybrid vehicle, and the device may be implemented in hardware and/or software, and the device may be configured in an electronic device with corresponding computing capabilities, such as a transmission controller, where after a user drives a heavy-duty hybrid commercial vehicle with an automatic gear and selects the driving gear as the automatic gear, the transmission controller automatically determines and switches the transmission gear during starting and driving according to the road condition and the power mode during starting and driving. As shown in fig. 1A, the method includes:
s110, determining a starting transmission gear according to the starting environment and the starting power mode of the hybrid vehicle.
S120, after the hybrid vehicle starts with the starting transmission gear, determining a transmission gear shifting route according to the starting transmission gear, the current power mode and the road gradient.
And S130, performing shift running according to the transmission shift line.
The transmission gear shifting route skips part of gears in the complete gear of the transmission, and the transmission gear is incomplete in practice. For example, the transmission is in a full gear 1-2-3-4-5-6-7-8-9-10-11-12 for a total of 12 gears, and the shift line is in a 4-6-8-9-10-11-12 for a total of 7 gears, under which the transmission can be upshifted from 4 to 6 without first upshifting to 5 gears, i.e., the shift line skips 5 gears including 1-2-3-5-7 over the full gear. The power modes include a pure electric mode, a hybrid mode, and an engine-only mode.
Specifically, as shown in a schematic structural diagram of a heavy-duty hybrid commercial vehicle in fig. 1B, the hybrid vehicle of the present invention includes an engine 1, a clutch 2, a motor 3, and a transmission 4 in a vehicle structure. When the vehicle needs to start, the starting required torque for smoothly starting the vehicle is calculated according to the starting environment (such as road gradient) of the vehicle. It can be understood that the speed ratios of the speed change devices providing the same torque are not the same in different power modes, so the invention calculates the speed change device starting speed ratio providing the torque required by the starting of the speed change device in the power mode according to the starting power mode when the vehicle starts, and takes the speed change device gear corresponding to the speed change device starting speed ratio as the starting speed change device gear when the vehicle starts, and the vehicle starts in the speed change device gear in the power mode. When the vehicle speed is greater than a certain value after the vehicle starts and the driving gear is the forward gear, the vehicle is determined to be in a running state, at the moment, a gear shifting route is determined according to the current power mode of the vehicle, the starting speed changer gear and the road gradient, and specific determination rules are written into the speed changer controller in advance. For example, when the starting gear is 4, the pure electric mode is adopted, and the road gradient is smaller than a certain value, the transmission shifting route is 4-6-8-9-10-11-12, and 5-7 gears can be skipped to shift gears, so that the frequency of shifting gears is reduced, the vehicle is quickly upshifted, and the smoothness is improved. After determining the transmission shift line, the transmission controller will control the transmission to shift in accordance with the incomplete gear in the shift line.
According to the embodiment of the invention, the driving condition and the driving intention are identified, before the vehicle starts, the driving mode, the total weight of the vehicle and the ramp signal are collected, the driving force required by the whole vehicle starting is determined by combining the related parameters of the whole vehicle transmission system, and the proper transmission gear is selected to smoothly start; during running, different transmission gear change routes are adopted according to the current driving mode (pure electric mode/hybrid electric mode), so that the frequency of gear shifting is reduced, and the smoothness of the vehicle when the transmission gear is switched is improved.
Fig. 2A is a flowchart of a control method for gear shifting of a hybrid vehicle according to still another embodiment of the present invention, where the embodiment is optimized and improved based on the foregoing embodiment. As shown in fig. 2A, the method includes:
s210, when a starting condition is met, determining a torque required for starting according to the whole vehicle weight of the hybrid vehicle, the road gradient, the wheel rolling radius and the safety coefficient;
s220, determining a transmission starting speed ratio of the transmission according to the torque required by starting, the main speed reduction ratio, the backup torque factor and the power mode related torque;
s230, determining the starting speed changer gear according to the speed changer starting speed ratio.
Wherein the starting condition comprises that the vehicle speed is zero and the driving gear is a forward gear.
Specifically, as shown in the flowchart of the transmission start gear control method shown in fig. 2B, when the vehicle speed is 0 and the driving gear is the forward gear, it is determined that there is a subsequent start intention of the driver. The transmission controller starts to calculate the torque required for starting according to the vehicle weight signal, the ramp signal and the like. The resistance to be overcome when the whole vehicle starts is the sum of ramp resistance and rolling resistance multiplied by a certain specific safety coefficient, and the corresponding torque calculation formula for starting the whole vehicle is as follows:
T VEH ＝(Gsinα+Gcosαf)×k×r
wherein T is VEH The vehicle-mounted hydraulic control system is characterized in that the vehicle-mounted hydraulic control system is a torque required for starting the whole vehicle, G is the weight of the whole vehicle, alpha is a ramp angle, k is a safety coefficient, and r is the rolling radius of wheels.
And calculating the starting speed ratio of the transmission required by the current starting according to the torque required by the starting of the whole vehicle. Optionally, the transmission starting speed ratio i n Is determined by the following formula:
i n ＝T VEH ÷T 1 ÷i 0 ÷k 1
wherein T is VEH To start the required torque i 0 Is the main speed reduction ratio, k 1 For the backup torque factor, in the pure mode, the power mode is associated with torque T 1 For peak motor torque, in hybrid/engine-only mode, power mode is associated with torque T 1 The available torque is summed for the motor and the engine. The matched transmission starting gear is determined on the basis of the transmission starting speed ratio, the actual speed ratio of the starting gear being greater than the starting speed ratio. After the determination of the starting gear, if the current gear of the transmission is not consistent with the starting gear, the current gear of the transmission is shifted to the starting gear.
S240, after the hybrid vehicle starts with the starting transmission gear, determining a transmission gear shifting route according to the starting transmission gear, the current power mode and the road gradient.
S250, determining a gear shifting basic rotating speed of each transmission gear in a gear shifting route of the transmission according to a current power mode, and acquiring gear shifting rotating speed compensation values under different running and gear shifting states;
s260, determining a gear shifting target rotating speed required for switching to an adjacent transmission gear in the gear shifting route of the transmission according to the gear shifting rotating speed compensation value in the current driving and gear-shifting state and the gear shifting basic rotating speed of the adjacent transmission gear of the current transmission gear;
and S270, shifting gears of adjacent transmission gears according to the current main power source rotating speed and the shifting target rotating speed, wherein the main power source rotating speed is the motor rotating speed or the engine rotating speed.
The driving state comprises an accelerator opening degree, a total weight of the vehicle and a gradient angle, and the gear shifting basic rotation speed of any transmission gear comprises an up-shifting basic rotation speed increased to the transmission gear and a down-shifting basic rotation speed decreased to the transmission gear.
Specifically, after a transmission gear shifting route is determined, the basic gear shifting speed of the gear shifting of each transmission in the gear shifting route is formulated according to the current power mode, and meanwhile preset gear shifting speed compensation values under different accelerator opening degrees, total weight of the vehicle, road gradient and gear shifting state are obtained. During running of the vehicle, the transmission controller determines a gear shifting rotation speed compensation value in the current running and gear shifting state according to the current running and gear shifting state of the vehicle, sums the gear shifting basic rotation speed of the current transmission gear in the adjacent gear in the gear shifting route with the gear shifting rotation speed compensation value, and after the gear shifting basic rotation speed and the rotation speed compensation value are added, the gear shifting target rotation speed of the adjacent transmission gear is obtained. And comparing the current main power source rotation speed with the up-shift target rotation speed of the adjacent transmission gear, and when the comparison result meets the gear shifting condition, the transmission controller increases the current transmission gear to the adjacent transmission gear or decreases the current transmission gear to the adjacent transmission gear.
Optionally, the gear shifting is performed according to the current main power source rotation speed and the gear shifting target rotation speed, including:
if the current main power source rotating speed is larger than the gear shifting target rotating speed and the gear is a high gear of the current gear, upshifting is performed based on the adjacent gear;
and if the current main power source rotating speed is smaller than the gear shifting target rotating speed and the adjacent gear is a low gear of the current gear, downshifting based on the adjacent gear.
Specifically, as shown in the shift control flowchart in the running process of fig. 2C, after determining the current main power source rotation speed, the upshift target rotation speed of the adjacent high gear, and the upshift target rotation speed of the adjacent low gear, upshift judgment is performed. And taking the upshift target rotation speed of the adjacent high gear as the upper rotation speed limit of the current transmission gear, and taking the downshift target rotation speed of the adjacent low gear as the lower rotation speed limit of the current transmission gear, so as to obtain the rotation speed interval of the current transmission gear. If the rotating speed of the main power source exceeds the upper limit of the rotating speed interval, namely, is larger than the upshift target rotating speed of the adjacent high gear, upshifting to the adjacent high gear; if the main power source rotation speed is lower than the rotation speed interval lower limit, namely lower than the downshift target rotation speed of the adjacent low gear, downshifting to the adjacent high gear.
According to the embodiment of the invention, the rotating speed of the main power source is used as the judging basis of the gear shifting time of the transmission, the power performance and economy of the whole vehicle are used as targets to set the basic gear shifting rotating speed, and meanwhile, the current accelerator opening, gradient, weight of the whole vehicle, gear jump and other working condition parameters are taken into consideration to carry out gear shifting rotating speed compensation, so that the smoothness of the vehicle when the gear of the transmission is switched is further improved.
Fig. 3 is a schematic structural diagram of a control device for gear shifting of a hybrid vehicle according to still another embodiment of the present invention. As shown in fig. 3, the apparatus includes:
a starting gear determination module 310 for determining a starting transmission gear according to a starting environment and a starting power mode of the hybrid vehicle;
a shift route determination module 320 configured to determine a transmission shift route according to the starting transmission gear, a current power mode, and a road grade after the hybrid vehicle starts with the starting transmission gear;
a shift line usage module 330 for performing shift travel according to the transmission shift line;
wherein the transmission shift line skips a portion of the full range of the transmission.
The control device for the speed change and gear shift of the hybrid vehicle provided by the embodiment of the invention can execute the control method for the speed change and gear shift of the hybrid vehicle provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Optionally, the starting gear determination module 310 includes:
the starting torque determining unit is used for determining the torque required for starting according to the whole vehicle weight of the hybrid vehicle, the road gradient, the wheel rolling radius and the safety coefficient when the starting condition is met;
a starting speed ratio determining unit for determining a transmission starting speed ratio of the transmission according to the torque required for starting, the main speed reduction ratio, the backup torque factor and the power mode related torque;
and the starting gear position determining unit is used for determining the starting transmission gear position according to the transmission starting speed ratio.
Optionally, the transmission starting speed ratio i n Is determined by the following formula:
i n ＝T VEH ÷T 1 ÷i 0 ÷k 1
wherein T is VEH Required for startingMoment, i 0 Is the main speed reduction ratio, k 1 For the backup torque factor, in the pure mode, the power mode is associated with torque T 1 For peak motor torque, in hybrid/engine-only mode, power mode is associated with torque T 1 The available torque is summed for the motor and the engine.
Optionally, the starting condition includes a vehicle speed being zero and a driving gear being a forward gear.
Optionally, the shift route usage module 330 includes:
the basic rotation speed determining unit is used for determining the basic rotation speed of gear shifting of each transmission gear in the transmission gear shifting route according to the current power mode and obtaining gear shifting rotation speed compensation values under different running and gear shifting states;
a target rotation speed determining unit, configured to determine a shift target rotation speed required for switching to an adjacent transmission gear in the transmission shift path according to a shift rotation speed compensation value in a current driving and gear-skip state and a shift basic rotation speed of the adjacent transmission gear in the current transmission gear;
and the adjacent gear shifting unit is used for shifting gears of adjacent transmission according to the current main power source rotating speed and the gear shifting target rotating speed, wherein the main power source rotating speed is the motor rotating speed or the engine rotating speed.
Optionally, the adjacent gear shifting unit is specifically identical to:
if the current main power source rotation speed is greater than the gear shifting target rotation speed and the adjacent transmission gear is a high gear of the current transmission gear, upshifting based on the adjacent transmission gear;
and if the current main power source rotation speed is smaller than the gear shifting target rotation speed and the adjacent transmission gear is a low gear of the current transmission gear, downshifting based on the adjacent transmission gear.
Optionally, the driving state includes an accelerator opening degree, a total vehicle weight and a gradient angle.
The further explained control device for speed change and gear shift of the hybrid vehicle can also execute the control method for speed change and gear shift of the hybrid vehicle provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Fig. 4 shows a schematic diagram of an electronic device 40 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 4, the electronic device 40 includes at least one processor 41, and a memory communicatively connected to the at least one processor 41, such as a Read Only Memory (ROM) 42, a Random Access Memory (RAM) 43, etc., in which the memory stores a computer program executable by the at least one processor, and the processor 41 may perform various suitable actions and processes according to the computer program stored in the Read Only Memory (ROM) 42 or the computer program loaded from the storage unit 48 into the Random Access Memory (RAM) 43. In the RAM 43, various programs and data required for the operation of the electronic device 40 may also be stored. The processor 41, the ROM 42 and the RAM 43 are connected to each other via a bus 44. An input/output (I/O) interface 45 is also connected to bus 44.
Various components in electronic device 40 are connected to I/O interface 45, including: an input unit 46 such as a keyboard, a mouse, etc.; an output unit 47 such as various types of displays, speakers, and the like; a storage unit 48 such as a magnetic disk, an optical disk, or the like; and a communication unit 49 such as a network card, modem, wireless communication transceiver, etc. The communication unit 49 allows the electronic device 40 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 41 may be various general and/or special purpose processing components with processing and computing capabilities. Some examples of processor 41 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 41 executes the various methods and processes described above, such as a control method for a hybrid vehicle gear shift.
In some embodiments, the hybrid vehicle shift control method may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as the storage unit 48. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 40 via the ROM 42 and/or the communication unit 49. When the computer program is loaded into the RAM 43 and executed by the processor 41, one or more steps of the hybrid vehicle shift control method described above may be performed. Alternatively, in other embodiments, the processor 41 may be configured to execute the hybrid vehicle shift control method in any other suitable manner (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on 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 disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims (10)

1. A method for controlling a hybrid vehicle gear shift, the method comprising:
determining a starting transmission gear according to a starting environment and a starting power mode of the hybrid vehicle;
after the hybrid vehicle starts with the starting transmission gear, determining a transmission gear shifting route according to the starting transmission gear, a current power mode and a road gradient;
performing shift running according to the transmission shift route;
wherein the transmission shift line skips a portion of the full range of the transmission.
2. The method of claim 1, wherein said determining a transmission shift line from the starting transmission gear, a current power mode, and a road grade after the hybrid vehicle starts with the starting transmission gear comprises:
when the starting conditions are met, determining the torque required for starting according to the whole vehicle weight of the hybrid vehicle, the road gradient, the wheel rolling radius and the safety coefficient;
determining a transmission starting speed ratio of the transmission according to the torque required for starting, the main speed reduction ratio, the backup torque factor and the power mode related torque;
and determining the starting transmission gear according to the transmission starting speed ratio.
3. The method of claim 2, wherein the transmission launch speed ratio i n Is determined by the following formula:
i n ＝T VEH ÷T 1 ÷i 0 ÷k 1
wherein T is VEH To start the required torque i 0 Is the main speed reduction ratio, k 1 For the backup torque factor, in the pure mode, the power mode is associated with torque T 1 Is an electric motorPeak torque, power mode related torque T in hybrid/pure engine mode 1 The available torque is summed for the motor and the engine.
4. A method according to claim 2, characterized in that the start condition comprises a vehicle speed of zero and a driving gear of forward gear.
5. The method of claim 1, wherein said shift traveling according to the transmission shift line comprises:
determining a gear shifting basic rotating speed of each transmission gear in a gear shifting route of the transmission according to a current power mode, and acquiring gear shifting rotating speed compensation values under different running and gear shifting states;
determining a gear shifting target rotating speed required for switching to an adjacent transmission gear in the gear shifting route of the transmission according to a gear shifting rotating speed compensation value in the current driving and gear shifting state and a gear shifting basic rotating speed of the adjacent transmission gear of the current transmission gear;
and shifting gears of adjacent transmission gears according to the current main power source rotating speed and the shifting target rotating speed, wherein the main power source rotating speed is the motor rotating speed or the engine rotating speed.
6. The method of claim 5, wherein shifting adjacent transmission gear according to the current primary power source speed and the shift target speed comprises:
if the current main power source rotation speed is greater than the gear shifting target rotation speed and the adjacent transmission gear is a high gear of the current transmission gear, upshifting based on the adjacent transmission gear;
and if the current main power source rotation speed is smaller than the gear shifting target rotation speed and the adjacent transmission gear is a low gear of the current transmission gear, downshifting based on the adjacent transmission gear.
7. The method of claim 5, wherein the driving conditions include accelerator opening, total vehicle weight, and grade angle.
8. A control device for a hybrid vehicle gear change, the device comprising:
the starting gear determining module is used for determining the gear of the starting transmission according to the starting environment and the starting power mode of the hybrid vehicle;
the gear shifting route determining module is used for determining a gear shifting route of the transmission according to the starting transmission gear, the current power mode and the road gradient after the hybrid vehicle starts with the starting transmission gear;
the gear shifting route using module is used for performing gear shifting running according to the gear shifting route of the transmission;
wherein the transmission shift line skips a portion of the full range of the transmission.
9. An electronic device, the electronic device comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the hybrid vehicle shift control method of any one of claims 1-7.
10. A computer readable storage medium storing computer instructions for causing a processor to execute the method of controlling gear shifting of a hybrid vehicle according to any one of claims 1 to 7.
CN202310659937.9A 2023-06-05 2023-06-05 Control method, device, equipment and storage medium for speed change and gear shift of hybrid vehicle Pending CN116447315A (en)

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Application Number Priority Date Filing Date Title
CN202310659937.9A CN116447315A (en) 2023-06-05 2023-06-05 Control method, device, equipment and storage medium for speed change and gear shift of hybrid vehicle

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CN116447315A true CN116447315A (en) 2023-07-18

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