CN109398096B - Braking energy recovery control method and device and automobile - Google Patents
Braking energy recovery control method and device and automobile Download PDFInfo
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- CN109398096B CN109398096B CN201811341658.3A CN201811341658A CN109398096B CN 109398096 B CN109398096 B CN 109398096B CN 201811341658 A CN201811341658 A CN 201811341658A CN 109398096 B CN109398096 B CN 109398096B
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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
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
-
- 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
- B60L2240/10—Vehicle control parameters
- B60L2240/12—Speed
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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
- B60L2250/00—Driver interactions
-
- 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
- B60L2250/00—Driver interactions
- B60L2250/12—Driver interactions by confirmation, e.g. of the input
-
- 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
- B60L2250/00—Driver interactions
- B60L2250/26—Driver interactions by pedal actuation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a brake energy recovery control method and device and an automobile. The control method for recovering the braking energy comprises the following steps: acquiring the state of a switch for turning off a creeping mode of a vehicle when the vehicle is in a braking mode; and if the state of the switch indicates that the crawling mode is closed, controlling the motor to output the braking torque until the speed of the vehicle is zero, and recovering energy. According to the embodiment of the invention, the switch for closing the crawling mode is arranged, so that the crawling mode is closed when a user needs the switch, the vehicle speed from the output of the braking torque to the vehicle is zero when the vehicle is braked, the energy recovery efficiency is improved, and the cruising mileage of the vehicle is improved.
Description
Technical Field
The invention relates to the technical field of vehicle energy recovery, in particular to a braking energy recovery control method and device and an automobile.
Background
According to the use habits of users, a common vehicle is provided with a crawling function, aiming at the vehicle with a single-pedal function, under a certain rotating speed of a motor, an accelerator pedal exceeds a certain opening degree of the motor to output positive torque, the vehicle enters an acceleration mode, the accelerator pedal is smaller than a certain opening degree of the motor to output negative torque, the vehicle enters a braking mode, after the vehicle is braked to a crawling speed (such as 6km/h), the motor stops outputting the negative torque, and the vehicle keeps crawling. Through tests, if crawling is cancelled, the motor braking negative torque in the vehicle speed range of 0-6 km/h is increased, and the vehicle endurance mileage can be increased by 2%.
Most of the current market vehicle types have a crawling function, the crawling is directly cancelled in a small part of single-pedal mode, and a key for turning on/off the crawling function is not provided. The crawling mode is cancelled, the braking recovery speed range is reduced to 0km/h, the energy recovery efficiency of the motor can be effectively improved, the driving range is improved, and the energy consumption is reduced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a braking energy recovery control method, a braking energy recovery control device and an automobile, and solves the problems that a crawling mode is directly cancelled, and the driving habits of a user and the mileage of the automobile cannot be balanced.
According to an aspect of the present invention, there is provided a braking energy recovery control method including:
acquiring a state of a switch for turning off a creep mode of a vehicle when the vehicle is in a braking mode;
and if the state of the switch indicates that the creeping mode is closed, controlling the motor to output braking torque and recovering energy until the speed of the vehicle is zero.
Optionally, the switch is a virtual key on the vehicle display screen.
Optionally, the switch is a physical button on the vehicle.
Optionally, the braking energy recovery control method further includes:
and controlling the single-pedal mode of the vehicle to be started, so that the braking torque is adjusted according to the opening degree of an accelerator pedal and the vehicle speed until the vehicle speed is zero.
Optionally, the braking energy recovery control method further includes:
and controlling the energy recovery intensity of the vehicle to be set as a third gear, wherein the energy recovery intensity is provided with a first gear, a second gear and a third gear which are sequentially enhanced.
According to another aspect of the present invention, there is provided a braking energy recovery control apparatus including:
a switch for turning off or on a creep mode of the vehicle;
the switch state acquisition module is used for acquiring the state of the switch when the vehicle is in a braking mode;
and the braking torque output module is used for controlling the motor to output braking torque and recover energy until the speed of the vehicle is zero when the state of the switch indicates that the crawling mode is closed.
Optionally, the switch is a virtual key on the vehicle display screen.
Optionally, the switch is a physical button on the vehicle.
Optionally, the braking energy recovery control device further includes:
and the single-pedal mode starting module is used for controlling the single-pedal mode of the vehicle to be started, so that the braking torque is adjusted according to the opening degree of an accelerator pedal and the vehicle speed until the vehicle speed is zero.
Optionally, the braking energy recovery control device further includes:
and the recovery intensity setting module is used for controlling the energy recovery intensity of the vehicle to be set to a third gear, wherein the energy recovery intensity is provided with a first gear, a second gear and a third gear which are sequentially enhanced.
According to another aspect of the present invention, there is provided an automobile including the braking energy recovery control apparatus.
The embodiment of the invention has the beneficial effects that:
the embodiment of the invention provides a braking energy recovery control method and device and an automobile. The switch for closing the crawling function is arranged, so that a user can conveniently select the crawling function to be turned on or off. When the user selects to close the crawling function, the vehicle is braked until the speed is zero, the energy recovery efficiency can be effectively improved, the driving range of the vehicle is increased, the energy consumption of the whole vehicle is reduced, and the problems that the crawling mode is directly cancelled, the driving habits of the user cannot be balanced, and the mileage of the vehicle cannot be increased are solved.
Drawings
FIG. 1 illustrates a flow chart of a braking energy recovery control method of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a virtual key according to an embodiment of the invention;
FIG. 3 illustrates an energy recovery logic control diagram according to an embodiment of the present invention;
fig. 4 is a block diagram showing a structure of a braking energy recovery control device according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
An embodiment of the present invention provides a braking energy recovery control method, as shown in fig. 1, including:
and 11, acquiring the state of a switch for closing the creeping mode of the vehicle when the vehicle is in the braking mode.
And 12, if the state of the switch indicates that the crawling mode is closed, controlling the motor to output braking torque and recovering energy until the speed of the vehicle is zero.
In this embodiment, a switch for turning off and on the crawling mode is additionally arranged on the vehicle, the switch is controlled by a user, and the user selects to turn off or turn on the crawling mode according to the requirement of the user. And when the vehicle is in a braking mode, judging whether the crawling mode is closed or not by acquiring the state of the switch.
When the vehicle is in a braking mode, if a user starts the creeping mode, the motor outputs a braking torque to brake to the creeping speed (such as 6km/h), and then the output of the braking torque is stopped, and the vehicle keeps creeping; and if the crawling mode is closed by the user, the motor outputs the braking torque until the speed of the vehicle is zero. By turning off the crawling function, the recovery of the braking energy of the vehicle from the crawling speed to the complete stop can be increased, and the endurance mileage of the vehicle is improved.
When the vehicle is subjected to a New European Driving Cycle (NEDC), a creeping function is cancelled, namely the braking torque of the motor in a vehicle speed range of 0-6 km/h is increased, the cruising mileage of the vehicle can be effectively increased by more than 2%, the energy consumption of the whole vehicle is reduced, and the cost is saved.
According to the braking energy recovery control method, the driving habits of the user are considered, meanwhile, the efficiency of braking energy recovery is improved, the endurance mileage of the vehicle is improved, and the problems that the driving habits of the user cannot be balanced and the mileage of the vehicle cannot be improved due to the fact that the crawling mode is directly cancelled are solved.
Specifically, as shown in fig. 2, the switch is a virtual key on the vehicle display screen.
In this embodiment, the switch is disposed ON a display screen of the vehicle, and is a virtual key, and is divided into two states, i.e., ON and OFF, where ON is the crawling mode and OFF is the crawling mode. The user can select the opening or closing of the crawling mode according to the driving habits of the user so as to reduce the occurrence of bad accidents.
Further, the switch is a physical key on the vehicle.
In this embodiment, the switch is disposed ON the vehicle and is a physical button, and is divided into two states, i.e., ON and OFF, where ON is the creep mode and OFF is the creep mode. The physical keys can enable a vehicle which is not provided with a display screen to be provided with a switch for selecting to turn on or turn off the crawling function, so that a user can select to turn on or turn off the crawling mode according to own driving habits, and the occurrence of adverse accidents is reduced.
Preferably, the braking energy recovery control method further includes:
and controlling the single-pedal mode of the vehicle to be started, so that the braking torque is adjusted according to the opening degree of an accelerator pedal and the vehicle speed until the vehicle speed is zero.
In this embodiment, the single pedal mode is enabled to further improve the energy recovery efficiency of the vehicle based on the creeping mode. As shown in fig. 2, the single pedal mode is turned on and off, and a user selects the mode according to his or her own needs by providing a corresponding switch on the vehicle.
In this embodiment, the switch of the single pedal mode is disposed ON the display screen of the vehicle, and is a virtual key, and is divided into two states, i.e., ON and OFF, where ON is the single pedal mode and ON, and OFF is the single pedal mode and OFF.
As shown in fig. 3, when the switch of the single pedal mode is in an ON state, the single pedal mode is turned ON, the torque recovery program of the vehicle is an X-Y-Z matrix table in which the torque of the motor varies with the opening of the accelerator pedal and the rotational speed of the motor, the motor with the accelerator pedal exceeding a certain opening outputs a positive torque, the vehicle enters an acceleration mode, the motor with the accelerator pedal smaller than a certain opening outputs a negative torque, and the vehicle enters a braking mode. When the switch of the single pedal mode is in an OFF state, the single pedal mode is closed, the vehicle is in a common recovery mode, the recovery torque program of the vehicle is an X-Y torque meter of which the braking torque and the sliding torque of the motor change along with the rotating speed of the motor, and the sliding torque and the braking torque are constant values. The single pedal mode is enabled to further improve the energy recovery efficiency of the vehicle.
Preferably, the braking energy recovery control method further includes:
and controlling the energy recovery intensity of the vehicle to be set as a third gear, wherein the energy recovery intensity is provided with a first gear, a second gear and a third gear which are sequentially enhanced.
In this embodiment, the energy recovery intensity of the vehicle is divided into a first gear, a second gear and a third gear, and the recovery intensity is sequentially enhanced. When the energy recovery intensity of the vehicle is set to be in the third gear, the energy recovery efficiency of the vehicle is the highest, and the energy recovery efficiency of the vehicle can be further improved on the basis that the vehicle is in the crawling mode and the single pedal mode is started.
As shown in fig. 2, a user can select a corresponding energy recovery gear through a virtual button on a vehicle display screen according to his or her own needs, wherein "1" represents a first gear, "2" represents a second gear, and "3" represents a third gear.
As shown in fig. 3, when the user selects the crawling mode to be closed, the single pedal mode is opened, and the energy recovery intensity of the vehicle is arranged in the third gear, the recovery torque program of the vehicle is an intensity 3 and an X-Y-Z, A type matrix table of which the motor torque changes along with the opening degree of an accelerator pedal and the rotating speed of the motor, at the moment, the energy recovery intensity of the motor reaches the maximum, the recovery electric quantity of the battery is effectively increased, the driving range of the vehicle is increased, the energy consumption of the whole vehicle is reduced, or the requirement on the available electric quantity of the battery is reduced on the basis of the unchanged range development target, and the battery cost is effectively saved.
According to the braking energy recovery control method provided by the embodiment of the invention, the switch for closing the crawling function is arranged, so that a user can conveniently select to turn on and turn off the crawling function. When the user selects to close the crawling function, the vehicle is braked until the speed is zero, the energy recovery efficiency can be effectively improved, the driving range of the vehicle is increased, the energy consumption of the whole vehicle is reduced, and the problems that the crawling mode is directly cancelled, the driving habits of the user cannot be balanced, and the mileage of the vehicle cannot be increased are solved. The embodiment further improves the vehicle energy recovery efficiency by starting the single pedal mode and setting the energy recovery to the third gear, so as to carry out the energy recovery to the maximum extent.
An embodiment of the present invention also provides a braking energy recovery control apparatus, as shown in fig. 4, including:
a switch 41 for turning off or on a creep mode of the vehicle.
Optionally, the switch is a virtual key on the vehicle display screen.
Optionally, the switch is a physical button on the vehicle.
A switch state acquisition module 42 for acquiring the state of the switch when the vehicle is in a braking mode.
And the braking torque output module 43 is used for controlling the motor to output braking torque and perform energy recovery until the vehicle speed of the vehicle is zero when the state of the switch indicates that the creeping mode is closed.
Preferably, the braking energy recovery control device further includes:
and the single-pedal mode starting module is used for controlling the single-pedal mode of the vehicle to be started, so that the braking torque is adjusted according to the opening degree of an accelerator pedal and the vehicle speed until the vehicle speed is zero.
Preferably, the braking energy recovery control device further includes:
and the recovery intensity setting module is used for controlling the energy recovery intensity of the vehicle to be set to a third gear, wherein the energy recovery intensity is provided with a first gear, a second gear and a third gear which are sequentially enhanced.
According to the braking energy recovery control device provided by the embodiment of the invention, the switch for closing the crawling function is arranged, so that a user can conveniently select to turn on and turn off the crawling function. When the user selects to close the crawling function, the vehicle is braked until the speed is zero, the energy recovery efficiency can be effectively improved, the driving range of the vehicle is increased, the energy consumption of the whole vehicle is reduced, and the problems that the crawling mode is directly cancelled, the driving habits of the user cannot be balanced and the mileage of the vehicle cannot be increased are solved. The embodiment further improves the vehicle energy recovery efficiency by starting the single pedal mode and setting the energy recovery to the third gear, so as to carry out the energy recovery to the maximum extent.
The embodiment of the invention also provides an automobile which comprises the braking energy recovery control device.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (11)
1. A braking energy recovery control method characterized by comprising:
acquiring a state of a switch for turning off a creep mode of a vehicle when the vehicle is in a braking mode;
and if the state of the switch indicates that the creeping mode is closed, controlling the motor to output braking torque and recovering energy until the speed of the vehicle is zero.
2. The braking energy recovery control method of claim 1, wherein the switch is a virtual key on the vehicle display screen.
3. The braking energy recovery control method of claim 1, wherein the switch is a physical button on the vehicle.
4. The braking energy recovery control method of claim 1, further comprising:
and controlling the single-pedal mode of the vehicle to be started, so that the braking torque is adjusted according to the opening degree of an accelerator pedal and the vehicle speed until the vehicle speed is zero.
5. The braking energy recovery control method of claim 1, further comprising:
and controlling the energy recovery intensity of the vehicle to be set as a third gear, wherein the energy recovery intensity is provided with a first gear, a second gear and a third gear which are sequentially enhanced.
6. A braking energy recovery control apparatus, characterized by comprising:
a switch for turning off or on a creep mode of the vehicle;
the switch state acquisition module is used for acquiring the state of the switch when the vehicle is in a braking mode;
and the braking torque output module is used for controlling the motor to output braking torque and recover energy until the speed of the vehicle is zero when the state of the switch indicates that the crawling mode is closed.
7. The braking energy recovery control device of claim 6, wherein the switch is a virtual key on the vehicle display screen.
8. The braking energy recovery control device of claim 6, wherein the switch is a physical button on the vehicle.
9. The braking energy recovery control device of claim 6, further comprising:
and the single-pedal mode starting module is used for controlling the single-pedal mode of the vehicle to be started, so that the braking torque is adjusted according to the opening degree of an accelerator pedal and the vehicle speed until the vehicle speed is zero.
10. The braking energy recovery control device of claim 6, further comprising:
and the recovery intensity setting module is used for controlling the energy recovery intensity of the vehicle to be set to a third gear, wherein the energy recovery intensity is provided with a first gear, a second gear and a third gear which are sequentially enhanced.
11. An automobile, characterized by comprising the braking energy recovery control device as defined in any one of claims 6 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811341658.3A CN109398096B (en) | 2018-11-12 | 2018-11-12 | Braking energy recovery control method and device and automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811341658.3A CN109398096B (en) | 2018-11-12 | 2018-11-12 | Braking energy recovery control method and device and automobile |
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| Publication Number | Publication Date |
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| CN109398096A CN109398096A (en) | 2019-03-01 |
| CN109398096B true CN109398096B (en) | 2021-03-23 |
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| CN201811341658.3A Active CN109398096B (en) | 2018-11-12 | 2018-11-12 | Braking energy recovery control method and device and automobile |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112297872B (en) * | 2019-08-02 | 2022-04-08 | 北京新能源汽车股份有限公司 | Automobile torque control method and device, control equipment and automobile |
| CN111845750A (en) * | 2020-06-24 | 2020-10-30 | 宝能(广州)汽车研究院有限公司 | Coasting control method for vehicle and vehicle |
| CN115610244A (en) * | 2022-10-31 | 2023-01-17 | 重庆长安汽车股份有限公司 | Automobile power saving control method and device, control equipment, automobile and storage medium |
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|---|---|---|---|---|
| CN102971178A (en) * | 2010-06-30 | 2013-03-13 | 日产自动车株式会社 | Creeping-cut control apparatus for electrically driven vehicle |
| CN107627901A (en) * | 2017-08-30 | 2018-01-26 | 北京新能源汽车股份有限公司 | Output torque control method, device and the automobile of a kind of motor |
| CN207164508U (en) * | 2017-08-29 | 2018-03-30 | 上海金脉电子科技有限公司 | For realizing the vehicle control unit of electric vehicle of multi-functional control |
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2018
- 2018-11-12 CN CN201811341658.3A patent/CN109398096B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102971178A (en) * | 2010-06-30 | 2013-03-13 | 日产自动车株式会社 | Creeping-cut control apparatus for electrically driven vehicle |
| CN207164508U (en) * | 2017-08-29 | 2018-03-30 | 上海金脉电子科技有限公司 | For realizing the vehicle control unit of electric vehicle of multi-functional control |
| CN107627901A (en) * | 2017-08-30 | 2018-01-26 | 北京新能源汽车股份有限公司 | Output torque control method, device and the automobile of a kind of motor |
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