CN113119747B - Idle speed control method, device and system and vehicle - Google Patents

Idle speed control method, device and system and vehicle Download PDF

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Publication number
CN113119747B
CN113119747B CN202010031844.8A CN202010031844A CN113119747B CN 113119747 B CN113119747 B CN 113119747B CN 202010031844 A CN202010031844 A CN 202010031844A CN 113119747 B CN113119747 B CN 113119747B
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Prior art keywords
torque
vehicle
displacement
speed
controller
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CN113119747A (en
Inventor
张小帅
梁海强
代康伟
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Beijing Electric Vehicle Co Ltd
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Beijing Electric Vehicle Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/44—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18054—Propelling the vehicle related to particular drive situations at stand still, e.g. engine in idling state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/423—Torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/08—Electric propulsion units
    • B60W2710/083—Torque
    • 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
    • Y02T10/72—Electric energy management in electromobility

Abstract

The invention provides an idle speed control method, device and system in a single-pedal driving mode and a vehicle, wherein the method comprises the following steps: when the gear device is in a forward gear, if the current speed of the vehicle is acquired to be higher than a first vehicle speed and the acquired displacement signal of the accelerator pedal sensor is larger than a first displacement, judging that an idle mode is started, and outputting a first torque to a motor controller; if the current speed of the vehicle is collected to be lower than the second vehicle speed and the displacement signal of the brake pedal sensor is collected to be larger than the second displacement, judging that the idling mode is started, and outputting a second torque to the motor controller; and if the current speed of the vehicle is less than the third vehicle speed and the displacement signal of the accelerator pedal sensor is not acquired to be greater than the first displacement or the displacement signal of the brake pedal sensor is not acquired to be greater than the second displacement, judging that the idle mode is closed, and outputting a third torque to the motor controller. The problem of in the daily driving process, idle mode matching nature and driving experience are poor is solved.

Description

Idle speed control method, device and system and vehicle
Technical Field
The invention relates to the technical field of automobiles, in particular to an idle speed control method, device and system in a single-pedal driving mode and a vehicle.
Background
At present, in order to improve economy, the pure electric vehicle has the functions of idling stop and single pedal, the driving range of the vehicle is obviously improved, various large vehicle manufacturers develop the functions, and an idling switch and a single pedal function switch are arranged on a central control or an instrument. However, the idle mode is usually required to be switched by a driver, and the idle mode is not suitable for use and has poor driving experience.
Disclosure of Invention
The embodiment of the invention provides an idle speed control method, device and system in a single-pedal driving mode and a vehicle, which are used for solving the problems of poor idle speed mode matching and poor driving experience in the daily driving process.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides an idle speed control method in a single-pedal driving mode, including:
when the gear device is in a forward gear, if the current speed of the vehicle is acquired to be higher than a first vehicle speed and the displacement signal of the accelerator pedal sensor is acquired to be higher than a first displacement, judging that an idle mode is started, and outputting a first torque to a motor controller;
when the gear device is in a forward gear, if the current speed of the vehicle is acquired to be lower than a second vehicle speed and the acquired displacement signal of the brake pedal sensor is greater than a second displacement, judging that an idle mode is started, and outputting a second torque to the motor controller;
when the gear device is in a forward gear, if the current speed of the vehicle is less than a third vehicle speed and the displacement signal of the accelerator pedal sensor is not acquired and is greater than the first displacement or the displacement signal of the brake pedal sensor is greater than the second displacement, the idle mode is judged to be closed, and a third torque is output to the motor controller.
Optionally, before outputting the first torque, the second torque, or the third torque to the motor controller, the method further includes: receiving maximum allowable feedback power sent by a battery controller, if the first torque, the second torque or the third torque is larger than the maximum allowable feedback torque corresponding to the maximum allowable feedback power, outputting the maximum allowable feedback torque, and otherwise, outputting the first torque, the second torque or the third torque.
Optionally, if the first torque, the second torque, or the third torque exceeds a preset torque, a brake lamp lighting instruction is sent to the vehicle body controller.
In a second aspect, an embodiment of the present invention provides an idle speed control apparatus in a single-pedal driving mode, including:
the idling module is used for judging that an idling mode is started and outputting a first torque to the motor controller if the current speed of the vehicle is greater than a first vehicle speed and the displacement signal of the accelerator pedal sensor is greater than a first displacement when the gear shifting device is in a forward gear;
the idling module is further used for judging that an idling mode is started and outputting a second torque to the motor controller if the current speed of the vehicle is lower than a second vehicle speed and the displacement signal of the brake pedal sensor is greater than a second displacement when the gear shifting device is in a forward gear;
the idling module is further used for judging that the idling mode is closed and outputting a third torque to the motor controller if the current speed of the vehicle is smaller than a third vehicle speed and the displacement signal of the accelerator pedal sensor is larger than the first displacement or the displacement signal of the brake pedal sensor is larger than the second displacement when the gear shifting device is in a forward gear.
Optionally, the idle speed control device further includes: the control module is used for sending maximum allowable feedback power to the idling module; the idle speed module is further configured to output the maximum allowable feedback torque to the motor controller when the first torque, the second torque, or the third torque is greater than the maximum allowable feedback torque corresponding to the maximum allowable feedback power, and otherwise output the first torque, the second torque, or the third torque to the motor controller.
Optionally, the idle speed control device further includes an output module, where the output module is configured to send a brake lamp lighting instruction to a vehicle body controller if the first torque, the second torque, or the third torque exceeds a preset torque.
In a third aspect, an embodiment of the present invention provides an idle speed control system in a single-pedal driving mode, including: the system comprises a motor controller, a vehicle control unit, an accelerator pedal sensor, a brake pedal sensor, a speed sensor and a gear device, wherein the motor controller, the gear device and the speed sensor are respectively connected with the vehicle control unit through a controller local area network, and the accelerator pedal sensor and the brake pedal sensor are respectively connected with the vehicle control unit through hard wires;
the gear device is used for controlling the driving gears of the vehicle, and the gears comprise a forward gear;
the accelerator pedal sensor is used for acquiring displacement information of an accelerator pedal;
the brake pedal sensor is used for acquiring displacement information of a brake pedal;
the speed sensor is used for acquiring the current running speed information of the vehicle;
the vehicle control unit is used for judging that an idle mode is started and outputting a first torque to a motor controller if the current speed of the vehicle is higher than a first vehicle speed and the displacement signal of the accelerator pedal sensor is higher than a first displacement when the gear device is in a forward gear;
the vehicle controller is further used for judging that an idle mode is started and outputting a second torque to the motor controller if the current speed of the vehicle is acquired to be lower than a second vehicle speed and the displacement signal of the brake pedal sensor is acquired to be larger than a second displacement when the gear device is in a forward gear;
the vehicle control unit is further used for judging that an idle mode is closed and outputting a third torque to the motor controller if the current speed of the vehicle is lower than a third vehicle speed and a displacement signal of the accelerator pedal sensor is not acquired to be larger than the first displacement or a displacement signal of the brake pedal sensor is not acquired to be larger than the second displacement when the gear shifting device is in a forward gear;
the motor controller is used for receiving the first torque, the second torque or the third torque and sending a control command to the motor.
Optionally, the idle speed control system further includes a battery controller, where the battery controller is connected to the vehicle controller through a controller area network, and is configured to send maximum allowable feedback power to the vehicle controller; the vehicle controller is further configured to output the maximum allowable feedback torque to the motor controller when the first torque, the second torque, or the third torque is greater than the maximum allowable feedback torque corresponding to the maximum allowable feedback power, otherwise output the first torque, the second torque, or the third torque to the motor controller, and the motor controller is further configured to receive the maximum allowable feedback torque and send a control instruction to the motor.
Optionally, the idle speed control system further includes a vehicle body controller, the vehicle body controller is connected to the vehicle controller through a controller area network, and the vehicle controller is configured to send a brake lamp lighting instruction to the vehicle body controller if the first torque, the second torque, or the third torque exceeds a preset torque; and the automobile body controller is used for lighting the brake lamp according to the brake lamp lighting instruction.
In a fourth aspect, embodiments of the present invention provide a vehicle including an idle speed control system in a single-pedal driving mode as described in the third aspect.
In the embodiment of the invention, the idling mode is opened or closed through the operation of stepping on the accelerator or the brake by the driver, so that the idling self-adaptation is carried out, more users can be better matched, and the driving experience and the economical efficiency are improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic flow chart of an idle speed control method according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of an idle speed control method according to another embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an idle speed control device according to an embodiment of the present invention connected to related components;
fig. 4 is a schematic structural diagram of an idle speed control system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides an idle speed control method in a single pedal driving mode, including:
step 11: when the gear device is in a forward gear, if the current speed of the vehicle is acquired to be higher than a first vehicle speed and the acquired displacement signal of the accelerator pedal sensor is larger than a first displacement, judging that an idle mode is started, and outputting a first torque to a motor controller;
step 12: when the gear device is in a forward gear, if the current speed of the vehicle is acquired to be lower than a second vehicle speed and the acquired displacement signal of the brake pedal sensor is greater than a second displacement, judging that an idle mode is started, and outputting a second torque to the motor controller;
step 13: when the gear device is in a forward gear, if the current speed of the vehicle is less than a third vehicle speed and the displacement signal of the accelerator pedal sensor is not acquired and is greater than the first displacement or the displacement signal of the brake pedal sensor is greater than the second displacement, the idle mode is judged to be closed, and a third torque is output to the motor controller.
In the embodiment of the invention, the first vehicle speed, the second vehicle speed, the third vehicle speed, the first displacement and the second displacement can be obtained by experimental statistics of a specific vehicle, for example, the first vehicle speed is 15km/h, the second vehicle speed is 30km/h, the third vehicle speed is 15km/h, the first displacement is 3mm and the second displacement is 3 mm.
The vehicle speed can be obtained by directly acquiring a speed sensor through a vehicle controller, and can also be directly displayed through a vehicle instrument panel.
When the vehicle is in a single-pedal driving mode (only stepping on an accelerator pedal or only stepping on a brake pedal), the opening or closing of the idle mode is flexibly controlled by the accelerator or the brake pedal of a user, and under other working conditions, the opening and closing of the idle mode are not switched, please refer to fig. 2:
when the idle mode of the vehicle is closed, when the gear device is in a forward gear, if the current speed of the vehicle is acquired to be greater than 15km/h and the displacement signal of the accelerator pedal sensor is acquired to be greater than 3mm, the idle mode is judged to be opened, and a first torque is output to the motor controller;
when the idle mode of the vehicle is closed, when the gear device is in a forward gear, if the current speed of the vehicle is acquired to be less than 30km/h and the acquired displacement signal of the brake pedal sensor is greater than 3mm, judging that the idle mode is opened, and outputting a second torque to the motor controller;
when the idle mode of the vehicle is started, when the gear device is in a forward gear, if the current speed of the vehicle is acquired to be less than 15km/h and the displacement signal of the accelerator pedal sensor is greater than 3mm or the displacement signal of the brake pedal sensor is greater than 3mm, the idle mode is judged to be closed, and third torque is output to the motor controller.
In the embodiment of the invention, the idling mode is opened or closed through the operation of stepping on the accelerator or the brake by the driver, so that the idling self-adaptation is carried out, more users can be better matched, and the driving experience and the economical efficiency are improved.
In some embodiments of the present invention, optionally, before the outputting the first torque, the second torque, or the third torque to the motor controller, the method further includes: receiving maximum allowable feedback power sent by a battery controller, if the first torque, the second torque or the third torque is larger than the maximum allowable feedback torque corresponding to the maximum allowable feedback power, outputting the maximum allowable feedback torque, otherwise, outputting the first torque, the second torque or the third torque.
In the embodiment of the invention, the battery controller is a vehicle available releasing and recovering power unit and is used for judging the energy recovery upper limit value after the vehicle switches on and off the idling function, and an energy boundary is provided for the vehicle in the self-adaptive process of the idling function so as to protect the battery system and the vehicle.
In some embodiments of the present invention, optionally, if the first torque, the second torque or the third torque exceeds a preset torque, a brake lamp lighting instruction is sent to the vehicle body controller.
In the embodiment of the invention, when the idle torque output to the motor controller exceeds the preset range, the brake lamp can be lightened, so that the safety of the vehicle before and after the idle mode is turned on or off is improved, and the warning of an external vehicle to pay attention to the current vehicle running state is facilitated.
Referring to fig. 3, the present invention also provides an idle speed control apparatus 2 in a single-pedal driving mode, including:
the idling module 201 is used for judging that an idling mode is started and outputting a first torque to the motor controller 205 if the current speed of the vehicle is acquired to be higher than a first vehicle speed and the displacement signal of the accelerator pedal sensor 203 is acquired to be higher than a first displacement when the gear shifting device 202 is in a forward gear;
the idling module 201 is further configured to, when the shifter 202 is in a forward gear, determine that an idling mode is started if the current speed of the vehicle is acquired to be lower than a second vehicle speed and the acquired displacement signal of the brake pedal sensor 204 is greater than a second displacement, and output a second torque to the motor controller 205;
the idling module 201 is further configured to, when the gear shifting unit 202 is in a forward gear, determine that an idling mode is closed if the current speed of the vehicle is less than a third vehicle speed and a displacement signal of the accelerator pedal sensor 203 is greater than the first displacement or a displacement signal of the brake pedal sensor 204 is greater than the second displacement, and output a third torque to the motor controller 205.
In the embodiment of the invention, the idle speed control device can open or close the idle speed mode through the operation of stepping on an accelerator or a brake by a driver to carry out idle speed self-adaptation, so that more users can be better matched, and the driving experience and the economy are improved.
In some embodiments of the present invention, optionally, the idle speed control device further includes: a control module 208, the control module 208 configured to send a maximum allowed back power to the idle module 201; the idle speed module 201 is further configured to output the maximum allowable feedback torque to the motor controller 205 when the first torque, the second torque, or the third torque is greater than the maximum allowable feedback torque corresponding to the maximum allowable feedback power, and otherwise output the first torque, the second torque, or the third torque to the motor controller 205.
In the embodiment of the invention, the control module is an available releasing and recovering power unit and is used for judging the energy recovery upper limit value after the idle speed control device switches the idle speed function, and an energy boundary is provided for the idle speed control device in the idle speed function self-adaption process so as to protect the idle speed control device.
In some embodiments of the present invention, optionally, the idle speed control device further includes an output module 207, and the output module 207 is configured to send a brake lamp lighting instruction to the body controller 201 if the first torque, the second torque, or the third torque exceeds a preset torque.
In the embodiment of the invention, when the torque output to the motor controller exceeds the preset range, the brake lamp can be lightened, so that the safety of the idle speed control device is improved, and the external vehicle can be reminded of paying attention to the current vehicle running state.
Referring to fig. 4, the present invention also provides an idle speed control system 3 in a single pedal driving mode, comprising: the system comprises a motor controller 205, a vehicle controller 301, an accelerator pedal sensor 203, a brake pedal sensor 204, a speed sensor 302 and a gear shifter 202, wherein the motor controller 205, the gear shifter 202 and the speed sensor 302 are respectively connected with the vehicle controller 301 through a controller area network, and the accelerator pedal sensor 203 and the brake pedal sensor 204 are respectively connected with the vehicle controller 301 through hard wires;
the gear device 202 is used for controlling the driving gears of the vehicle, and the gears comprise a forward gear;
the accelerator pedal sensor 203 is used for acquiring displacement information of an accelerator pedal;
the brake pedal sensor 204 is used for acquiring displacement information of a brake pedal;
the speed sensor 302 is used for acquiring the current running speed information of the vehicle;
the vehicle control unit 301 is configured to, when the gear shifting unit 202 is in a forward gear, determine that an idle mode is started if the current speed of the vehicle is acquired to be higher than a first vehicle speed and the acquired displacement signal of the accelerator pedal sensor 203 is higher than a first displacement, and output a first torque to the motor controller 205;
the vehicle control unit 301 is further configured to, when the shifter 202 is in a forward gear, determine that an idle mode is started if the current speed of the vehicle is acquired to be lower than a second vehicle speed and the acquired displacement signal of the brake pedal sensor 204 is greater than a second displacement, and output a second torque to the motor controller 205;
the vehicle controller 301 is further configured to, when the gear shifter 202 is in a forward gear, determine that an idle mode is closed if the current speed of the vehicle is less than a third vehicle speed and a displacement signal of the accelerator pedal sensor 203 is not acquired to be greater than the first displacement or a displacement signal of the brake pedal sensor 204 is not acquired to be greater than the second displacement, and output a third torque to the motor controller 205;
the motor controller 205 is configured to send a control instruction to the motor 303 after receiving the first torque, the second torque, or the third torque.
In the embodiment of the invention, the idle speed control system can start or close the idle speed mode through the operation of stepping on the accelerator or the brake by the driver, and performs the adaptive switching of the idle speed mode, so that more users can be better matched, and the driving experience and the economical efficiency are improved.
In some embodiments of the present invention, optionally, the idle speed control system 3 further includes a battery controller 206, where the battery controller 206 is connected to the vehicle control unit 301 through a controller area network, and is configured to send maximum allowable feedback power to the vehicle control unit 301; the vehicle controller 301 is further configured to output the maximum allowable feedback torque to the motor controller 206 when the first torque, the second torque, or the third torque is greater than the maximum allowable feedback torque corresponding to the maximum allowable feedback power, or otherwise output the first torque, the second torque, or the third torque to the motor controller 206; the motor controller 206 is further configured to receive the maximum allowable feedback torque and send a control command to the motor 303.
In the embodiment of the invention, the battery controller is a vehicle available releasing and recovering power unit and is used for judging the energy recovery upper limit value after the vehicle switches on and off the idling function, and an energy boundary is provided for the vehicle in the self-adaption process of the idling function so as to protect a battery system and the vehicle.
Optionally, the idle speed control system 3 further includes a vehicle body controller 208, the vehicle body controller 208 is connected to the vehicle controller 301 through a controller area network, and the vehicle controller 301 is configured to send a brake lamp lighting instruction to the vehicle body controller 208 if the first torque, the second torque, or the third torque exceeds a preset torque; the vehicle body controller 208 is configured to light the stop lamp 304 according to the stop lamp lighting instruction.
In the embodiment of the invention, when the idle torque output to the motor controller exceeds the preset range, the brake lamp can be lightened, so that the safety of the idle speed control system is improved, and the warning of an external vehicle to pay attention to the current vehicle running state is facilitated.
The invention also provides a vehicle comprising the idle speed control system in the single-pedal driving mode.
In the embodiment of the invention, the vehicle can be a pure electric vehicle or a hybrid electric vehicle.
In the embodiment of the invention, the vehicle can perform the self-adaptive switching of the idle speed mode through the operation of stepping on the accelerator or the brake by the driver, so that more users can be better matched, and the driving experience and the economical efficiency are improved.
While the present invention has been described with reference to the particular illustrative embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications, equivalent arrangements, and equivalents thereof, which may be made by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. An idle speed control method in a single pedal driving mode, comprising:
when the gear device is in a forward gear, if the current speed of the vehicle is acquired to be higher than a first vehicle speed and the displacement signal of the accelerator pedal sensor is acquired to be higher than a first displacement, judging that an idle mode is started, and outputting a first torque to a motor controller;
when the gear device is in a forward gear, if the current speed of the vehicle is acquired to be lower than a second vehicle speed and the acquired displacement signal of the brake pedal sensor is greater than a second displacement, judging that an idle mode is started, and outputting a second torque to the motor controller;
when the gear device is in a forward gear, if the current speed of the vehicle is acquired to be less than a third vehicle speed and the displacement signal of the accelerator pedal sensor is not acquired to be greater than a first displacement or the displacement signal of the brake pedal sensor is greater than a second displacement, the idle mode is judged to be closed, and a third torque is output to the motor controller.
2. The idle control method of claim 1 further comprising, prior to the outputting the first torque, the second torque, or the third torque to the motor controller: receiving maximum allowable feedback power sent by a battery controller, if the first torque, the second torque or the third torque is larger than the maximum allowable feedback torque corresponding to the maximum allowable feedback power, outputting the maximum allowable feedback torque, otherwise, outputting the first torque, the second torque or the third torque.
3. The idle speed control method of claim 1 wherein a brake light on command is sent to a vehicle body controller if the first torque, the second torque, or the third torque exceeds a predetermined torque.
4. An idle speed control apparatus in a single pedal driving mode, comprising:
the idling module is used for judging that an idling mode is started and outputting a first torque to the motor controller if the current speed of the vehicle is greater than a first vehicle speed and the displacement signal of the accelerator pedal sensor is greater than a first displacement when the gear shifting device is in a forward gear;
the idling module is further used for judging that an idling mode is started and outputting a second torque to the motor controller if the current speed of the vehicle is acquired to be lower than a second vehicle speed and the displacement signal of the brake pedal sensor is acquired to be larger than a second displacement when the gear shifting device is in a forward gear;
the idling module is further used for judging that the idling mode is closed and outputting a third torque to the motor controller if the current speed of the vehicle is smaller than a third vehicle speed and the displacement signal of the accelerator pedal sensor is larger than the first displacement or the displacement signal of the brake pedal sensor is larger than the second displacement when the gear shifting device is in a forward gear.
5. The idle speed control device of claim 4 further comprising: the control module is used for sending maximum allowable feedback power to the idling module;
the idle speed module is further configured to output the maximum allowable feedback torque to the motor controller when the first torque, the second torque, or the third torque is greater than the maximum allowable feedback torque corresponding to the maximum allowable feedback power, and otherwise output the first torque, the second torque, or the third torque to the motor controller.
6. The idle speed control device of claim 4 further comprising an output module configured to send a brake light on command to the body controller if the first torque, the second torque, or the third torque exceeds a predetermined torque.
7. An idle control system in a single pedal drive mode, comprising: the system comprises a motor controller, a whole vehicle controller, an accelerator pedal sensor, a brake pedal sensor, a speed sensor and a gear device, wherein the motor controller, the gear device and the speed sensor are respectively connected with the whole vehicle controller through a controller local area network, and the accelerator pedal sensor and the brake pedal sensor are respectively connected with the whole vehicle controller through hard wires;
the gear device is used for controlling the driving gears of the vehicle, and the gears comprise a forward gear;
the accelerator pedal sensor is used for acquiring displacement information of an accelerator pedal;
the brake pedal sensor is used for acquiring displacement information of a brake pedal;
the speed sensor is used for acquiring the current running speed information of the vehicle;
the vehicle control unit is used for judging that an idle mode is started and outputting a first torque to a motor controller if the current speed of the vehicle is acquired to be higher than a first vehicle speed and the displacement signal of the accelerator pedal sensor is acquired to be higher than a first displacement when the gear shifting device is in a forward gear;
the vehicle control unit is further used for judging that an idle mode is started and outputting a second torque to the motor controller if the current speed of the vehicle is lower than a second vehicle speed and the displacement signal of the brake pedal sensor is greater than a second displacement when the gear device is in a forward gear;
the vehicle control unit is further used for judging that an idle mode is closed and outputting a third torque to the motor controller if the current speed of the vehicle is lower than a third vehicle speed and a displacement signal of the accelerator pedal sensor is not acquired to be larger than the first displacement or a displacement signal of the brake pedal sensor is not acquired to be larger than the second displacement when the gear shifting device is in a forward gear;
the motor controller is used for receiving the first torque, the second torque or the third torque and sending a control command to the motor.
8. The idle control system of claim 7 further comprising a battery controller connected to the vehicle control unit via a controller area network for sending maximum allowable back power to the vehicle control unit;
the vehicle controller is further configured to output the maximum allowable feedback torque to the motor controller when the first torque, the second torque, or the third torque is greater than the maximum allowable feedback torque corresponding to the maximum allowable feedback power, otherwise output the first torque, the second torque, or the third torque to the motor controller;
the motor controller is also used for receiving the maximum allowable feedback torque and sending a control instruction to the motor.
9. The idle control system of claim 7 further comprising a vehicle body controller connected to the vehicle controller via a controller area network, the vehicle controller configured to send a brake light on command to the vehicle body controller if the first torque, the second torque, or the third torque exceeds a preset torque; and the automobile body controller is used for lighting the brake lamp according to the brake lamp lighting instruction.
10. A vehicle comprising an idle speed control system as claimed in any one of claims 7 to 9.
CN202010031844.8A 2020-01-13 2020-01-13 Idle speed control method, device and system and vehicle Active CN113119747B (en)

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