CN106809053B - Method for preventing electric vehicle from sliding along ramp - Google Patents
Method for preventing electric vehicle from sliding along ramp Download PDFInfo
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- CN106809053B CN106809053B CN201710039497.1A CN201710039497A CN106809053B CN 106809053 B CN106809053 B CN 106809053B CN 201710039497 A CN201710039497 A CN 201710039497A CN 106809053 B CN106809053 B CN 106809053B
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- motor
- slope
- electric vehicle
- vehicle
- control system
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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
- B60L15/2009—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 for braking
- B60L15/2018—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 for braking for braking on a slope
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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
- 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
- B60L2240/429—Current
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a method for preventing a ramp of an electric vehicle from sliding down, which is characterized in that after the electric vehicle is electrified for the first time, a motor is driven to rotate through a motor control system, so that a positive winding and a reverse winding of the motor are judged and memorized in a single chip microcomputer; when the vehicle is in a slope running state, the control system judges the steering direction of the motor according to the memorized motor winding direction and the motor Hall change sequence, starts the slope sliding prevention function, and opens the three-phase driven lower bridge to enable the vehicle to generate a large resistance to prevent the vehicle from running on the slope, thereby realizing the function of preventing the slope sliding of the ramp of the electric vehicle. When the electric vehicle climbs a slope, the vehicle fails and enters the anti-slide system immediately, so that the timeliness is better, the occurrence of traffic accidents is reduced, current cannot be generated during the anti-slide process, the control system cannot be damaged, and the performance of the product is greatly improved. The invention is completed on the original control system without increasing any whole vehicle cost. Therefore, the invention has obvious advantages and effects.
Description
Technical Field
The invention relates to the field of electric vehicles, in particular to a slope slipping prevention method for a ramp of an electric vehicle.
Background
With the development of society, people have higher and higher requirements on the safety of vehicles. When the electric vehicle frequently climbs a slope, the vehicle fails and slides backwards to cause traffic accidents, and various manufacturers try to solve the problem.
When vehicles are out of order during climbing, the vehicles are realized by starting an anti-theft lock motor and a machine, but the vehicles are not accepted by the market because of timeliness, inconvenience in operation, damage to a controller caused by large current and high cost.
Meanwhile, the anti-slope-sliding function is achieved in the current market by adopting a mechanical anti-slope-sliding device, a key anti-theft mode and the like. The mechanical device is adopted, the cost of the electric vehicle is increased, and the mechanical device is not suitable for being adopted in the market of the electric vehicle with more intense competition. The key anti-theft mode is adopted, on one hand, a key is added on the whole vehicle, and manual point contact removal is needed when a slope slides, so that the timeliness is poor; on the other hand, when the lock is stolen, the controller can generate current to damage the control system, so the anti-theft lock is rarely adopted.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for preventing the slope of the ramp of the electric vehicle from sliding, which solves the problem of the ramp traffic by judging the slope sliding direction of the electric vehicle through a control system and greatly improves the safety of the vehicle and the reliability of products.
The purpose of the invention is realized by the following technical scheme: the method for preventing the slope of the electric vehicle from sliding along the slope comprises the steps that after the electric vehicle is electrified for the first time, a motor is driven to rotate through a motor control system, so that the positive and negative windings of the motor are judged and memorized in a single chip microcomputer; when the vehicle is in a slope slipping state, the control system judges the steering direction of the motor according to the memorized motor winding direction and the motor Hall change sequence, starts the slope slipping prevention function, and opens the lower bridge driven by the three phases to enable the vehicle to generate a large resistance to prevent the vehicle from slipping on the slope, thereby realizing the function of preventing the slope slipping of the ramp of the electric vehicle.
Preferably, the motor winding direction and the motor Hall change sequence are judged by the following methods:
the accelerator is rotated to enable the vehicle to run, when the vehicle is in a forward gear, the control system judges the sequence of the Hall of the motor, and if the Hall of the motor is in a positive sequence, the motor can be judged to be a forward winding; if the sequence is reverse, the reverse winding can be judged; when the vehicle is in a reverse gear, if the Hall of the motor is in a reverse sequence, the motor can be judged to be a forward winding; if the positive sequence is adopted, the reverse winding is judged.
Preferably, when the control system does not have a driving motor, the electric vehicle slips down the slope when climbing the slope, so that the slipping direction of the vehicle needs to be judged in time, and the electric vehicle is braked at the fastest speed.
Preferably, the positive and negative rotation of the vehicle is judged by the following method:
the motor is a forward winding motor: the electric vehicle is in a forward gear state, when the electric vehicle slips down on a slope, the control system judges that the Hall of the motor is in a reverse order, and at the moment, the electric vehicle is judged to slip down on the slope backwards; the electric vehicle is in a reverse gear state, when the electric vehicle slides down a slope, the control system judges that the Hall of the motor is a positive sequence, and at the moment, the electric vehicle is judged to slide forward on the slope;
the motor is a reverse winding motor: the electric vehicle is in a forward gear state, when the electric vehicle slips down on a slope, the control system judges that the Hall of the motor is a positive sequence, and at the moment, the control system judges that the motor slips down on the slope backwards; the electric vehicle is in a reverse gear state, when the electric vehicle slides down a slope, the control system judges that the Hall of the motor is in a reverse order, and at the moment, the electric vehicle is judged to slide forward on the slope.
Compared with the prior art, the method has the following beneficial effects:
according to the invention, when the electric vehicle climbs a slope, the vehicle fails and enters the anti-slide system immediately, so that the timeliness is better, the occurrence of traffic accidents is reduced, current cannot be generated during the anti-slide process, the control system cannot be damaged, and the performance of the product is greatly improved. The invention is completed on the original control system without increasing any whole vehicle cost. Therefore, the invention has obvious advantages and effects.
Drawings
Fig. 1 is a flowchart of determining a motor winding direction and a motor hall change sequence in an electric vehicle ramp anti-slope-slipping method according to an embodiment of the present invention.
Fig. 2 is a flowchart of determining the forward and reverse rotation of a vehicle in the method for preventing an electric vehicle from sliding down a slope on a slope according to the embodiment of the invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a method for preventing an electric vehicle from sliding down a slope on a slope, after the electric vehicle is powered on for the first time, a motor control system drives a motor to rotate, so as to determine a positive winding and a reverse winding of the motor, and store the positive winding and the reverse winding in a single chip; when the vehicle is in a slope slipping state, the control system judges the steering direction of the motor according to the memorized motor winding direction and the motor Hall change sequence, starts the slope slipping prevention function, and opens the lower bridge driven by the three phases to enable the vehicle to generate a large resistance to prevent the vehicle from slipping on the slope, thereby realizing the function of preventing the slope slipping of the ramp of the electric vehicle.
Judging the direction of a motor winding and the Hall change sequence of the motor by the following method:
the accelerator is rotated to enable the vehicle to run, when the vehicle is in a forward gear, the control system judges the sequence of the Hall of the motor, and if the Hall of the motor is in a positive sequence, the motor can be judged to be a forward winding; if the sequence is reverse, the reverse winding can be judged; when the vehicle is in a reverse gear, if the Hall of the motor is in a reverse sequence, the motor can be judged to be a forward winding; if the positive sequence is adopted, the direction winding is judged.
When the control system is not provided with a driving motor, the electric vehicle slips when climbing a slope, so that the slipping direction of the vehicle needs to be judged in time, and the electric vehicle is braked at the highest speed.
The positive and negative rotation of the vehicle is judged by the following method:
the motor is a forward winding motor: the electric vehicle is in a forward gear state, when the electric vehicle slips down on a slope, the control system judges that the Hall of the motor is in a reverse order, and at the moment, the electric vehicle is judged to slip down on the slope backwards; the electric vehicle is in a reverse gear state, when the electric vehicle slides down a slope, the control system judges that the Hall of the motor is a positive sequence, and at the moment, the electric vehicle is judged to slide forward on the slope;
the motor is a reverse winding motor: the electric vehicle is in a forward gear state, when the electric vehicle slips down on a slope, the control system judges that the Hall of the motor is a positive sequence, and at the moment, the control system judges that the motor slips down on the slope backwards; the electric vehicle is in a reverse gear state, when the electric vehicle slides down a slope, the control system judges that the Hall of the motor is in a reverse order, and at the moment, the electric vehicle is judged to slide forward on the slope.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (3)
1. The method for preventing the slope of the electric vehicle from sliding along the slope is characterized in that after the electric vehicle is electrified for the first time, a motor is driven to rotate through a motor control system, so that a positive winding and a reverse winding of the motor are judged and memorized in a single chip microcomputer; when the vehicle is in a slope slipping state, the control system judges the steering direction of the motor according to the memorized motor winding direction and the motor Hall change sequence, starts the slope slipping prevention function, and opens the lower bridge driven by three phases to enable the vehicle to generate a large resistance to prevent the vehicle from slipping on the slope, thereby realizing the function of preventing the slope slipping of the ramp of the electric vehicle;
judging the direction of a motor winding and the Hall change sequence of the motor by the following method:
the accelerator is rotated to enable the vehicle to run, when the vehicle is in a forward gear, the control system judges the sequence of the Hall of the motor, and if the Hall of the motor is in a positive sequence, the motor can be judged to be a forward winding; if the sequence is reverse, the reverse winding can be judged; when the vehicle is in a reverse gear, if the Hall of the motor is in a reverse sequence, the motor can be judged to be a forward winding; if the positive sequence is adopted, the reverse winding is judged.
2. The method for preventing the slope slipping of the electric vehicle on the slope according to claim 1, wherein when the control system does not drive the motor, the electric vehicle slips when climbing the slope, so that the direction of the vehicle slipping is judged in time to brake the electric vehicle at the fastest speed.
3. The method for preventing a slope slipping down a slope of an electric vehicle according to claim 1, wherein the forward and reverse rotation of the vehicle is judged by:
the motor is a forward winding motor: the electric vehicle is in a forward gear state, when the electric vehicle slips down on a slope, the control system judges that the Hall of the motor is in a reverse order, and at the moment, the electric vehicle is judged to slip down on the slope backwards; the electric vehicle is in a reverse gear state, when the electric vehicle slides down a slope, the control system judges that the Hall of the motor is a positive sequence, and at the moment, the electric vehicle is judged to slide forward on the slope;
the motor is a reverse winding motor: the electric vehicle is in a forward gear state, when the electric vehicle slips down on a slope, the control system judges that the Hall of the motor is a positive sequence, and at the moment, the control system judges that the motor slips down on the slope backwards; the electric vehicle is in a reverse gear state, when the electric vehicle slides down a slope, the control system judges that the Hall of the motor is in a reverse order, and at the moment, the electric vehicle is judged to slide forward on the slope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710039497.1A CN106809053B (en) | 2017-01-19 | 2017-01-19 | Method for preventing electric vehicle from sliding along ramp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710039497.1A CN106809053B (en) | 2017-01-19 | 2017-01-19 | Method for preventing electric vehicle from sliding along ramp |
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| Publication Number | Publication Date |
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| CN106809053A CN106809053A (en) | 2017-06-09 |
| CN106809053B true CN106809053B (en) | 2020-01-17 |
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| CN201710039497.1A Active CN106809053B (en) | 2017-01-19 | 2017-01-19 | Method for preventing electric vehicle from sliding along ramp |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3225578B2 (en) * | 1992-03-19 | 2001-11-05 | 株式会社日立製作所 | Electric car |
| CN101741291B (en) * | 2008-11-10 | 2013-06-19 | 天津市松正电动科技有限公司 | Method for identifying DC brush-less motor winding direction by utilizing electric vehicle controller |
| CN101554839A (en) * | 2009-03-25 | 2009-10-14 | 胡晓明 | Anti-rear-slip system of electric automobile |
| CN101966822A (en) * | 2010-10-26 | 2011-02-09 | 上海中科深江电动车辆有限公司 | Back-sliding prevention control method of pure electric vehicle via idle speed |
| CN103182952B (en) * | 2011-12-28 | 2016-05-25 | 深圳市汇川技术股份有限公司 | A kind of electric automobile electronics control system in slope and method |
| CN102710195B (en) * | 2012-05-23 | 2015-02-25 | 宁波云控电气有限公司 | Backward slipping preventing motor drive controller for electric vehicle and control method |
| CN106335404A (en) * | 2016-09-23 | 2017-01-18 | 成都雅骏新能源汽车科技股份有限公司 | Anti-running control method based on battery electric vehicle |
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Effective date of registration: 20210610 Granted publication date: 20200117 |