CN102717710A - Speed limiting device of electric vehicle - Google Patents
Speed limiting device of electric vehicle Download PDFInfo
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- CN102717710A CN102717710A CN2012101858824A CN201210185882A CN102717710A CN 102717710 A CN102717710 A CN 102717710A CN 2012101858824 A CN2012101858824 A CN 2012101858824A CN 201210185882 A CN201210185882 A CN 201210185882A CN 102717710 A CN102717710 A CN 102717710A
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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
- Y02T10/64—Electric machine technologies in electromobility
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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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Abstract
The invention relates to a speed limiting device of an electric vehicle. The speed limiting device comprises a power supply device, a main control device, a speed regulating device, a motor control device, a speed collecting device and an output control device, wherein the speed collecting device is used for collecting the change speed of a motor Hall device and collecting the change speed of a motor phase line; the output control device is composed of a switch device and a driving circuit and is used for controlling the switching time of the switch device through the size of the duty ratio output by the main control device and therefore controlling the current output to the motor control device; and the power supply device supplies power for the output control device. The speed limiting device has the advantages that the accelerated speed is not calculated according to the output duty ratio, but the actual accelerated speed is directly calculated by judging the speed change value of the speed collecting device in fixed time (T), the maximum power output can be realized in a speed limiting range, and the maximum torque is achieved.
Description
Technical field
The present invention relates to a kind of device of battery-driven car, relate in particular to a kind of device of battery-driven car speed limit.
Background technology
At present, battery-driven car is as a kind of vehicle, and its advantage is exactly energy-conservation, environmental protection, economy is convenient.Preceding 2 is national demand, and back 2 is middle low layer consumer demand.Battery-driven car is to carry out according to the management regulation of unpowered vehicle at present; Equally with bicycle enjoy certain favorable treatment; Exactly because policy is loose; Cause China's battery-driven car quantity growth too fast, the moving velocity of battery-driven car self is also more and more faster, the vehicle that has even surpassed the moving velocity of motor bike.The safety misadventure of battery-driven car also rapidly increases thereupon.Country considers the existence of these synthtic price index, can't fundamentally limit the development of battery-driven car again, therefore progressively imports the speed limit national standard of battery-driven car, and the speed limit of Electrical Bicycle is 20 kilometers/hour at present.But the speed of the dispatching from the factory major part of the battery-driven car of producing has at present all surpassed the standard of this speed limit, if National standard must adopt the speed limit function, but the method for limiting speed that adopts at present, just simple restriction single output duty cycle (PWM).
Though the method can limited speed, produces following shortcoming: the one, to different vehicles and motor, the velocity contrast opposite sex of restriction is bigger.Possessed the speed limit function though cause, because vehicle is different, speed limit is also different.The 2nd, under the situation of limited speed; Also limited the horsepower output of motor; Maximum moment of torsion, particularly electric motor starting can't be provided when motor is low-tach, and this shortcoming is apparent in view under the situation of heavy load work; If use the method to limit the speed of battery-driven car, become a kind of burden for the user.
Summary of the invention
The purpose of this invention is to provide a kind of standard that can both satisfy country, can in the speed limit scope, realize maximum power output again, reach the battery-driven car speed-limit device of the moment of torsion of maximum for the battery-driven car speed limit.
For realizing above-mentioned purpose, the technical scheme that the present invention adopted is:
A kind of battery-driven car speed-limit device, comprising: electric supply installation, master control set, speed regulating device, motor control assembly; Electric supply installation adopts direct supply, and master control set is supplied power; Master control set comprises input sample change-over circuit, main control chip, output circuit; Speed regulating device is made up of the device of adjustable voltage, like pedal or handle regulating voltage; Motor control assembly adopts electrical motor, like the brush DC three phase electric machine; Its characteristics are: this battery-driven car speed-limit device also comprises speed acquisition device and output-controlling device, and the speed acquisition device uses the pace of change of gathering the motor hall device, gathers the pace of change of motor phase line; Output-controlling device is by switching component, and driving circuit is formed, and the size of the dutycycle through above-mentioned master control set output to controlling the switching time of switching component, thereby is controlled the electric current that it outputs to motor control assembly; Output-controlling device is supplied power by electric supply installation.
Advantage of the present invention is: the present invention calculates acceleration/accel according to output duty cycle; But directly through judging the velocity variations value calculating actual acceleration in the speed sampling device set time (T); Can in the speed limit scope, realize maximum power output, reach maximum moment of torsion.
Description of drawings
Fig. 1 is the scheme drawing of speed-limit device of the present invention.
In the accompanying drawing
1, electric supply installation 2, speed acquisition device 3, speed regulating device 4, master control set
5, output-controlling device 6, motor control assembly
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is further described:
A kind of battery-driven car speed-limit device, as shown in Figure 1, comprising: electric supply installation 1, master control set 4, speed regulating device 3, motor control assembly 6; Electric supply installation 1 adopts direct supply, to master control set 4 power supplies; Master control set 4 comprises input sample change-over circuit, main control chip, output circuit; The maximum voltage value of the velocity amplitude of the main collection through speed sampling device 2 of master control set 4 and the qualification of speed regulating device 3 is according to the different big or small output voltage dutycycles (PWM) of speed limit scope output of inner setting.Speed regulating device 3 is made up of the device of adjustable voltage, like pedal or handle regulating voltage; Motor control assembly 6 adopts electrical motor, like the brush DC three phase electric machine; Motor control assembly 6 is according to the voltage duty cycle of master control set 4 outputs, and change outputs to the size of current on the motor, thus control rate and moment of torsion.This battery-driven car speed-limit device also comprises speed acquisition device 2 and output-controlling device 5, and speed acquisition device 2 uses the pace of change of gathering the motor hall device, gathers the pace of change of motor phase line; Output-controlling device 5 is by switching component, and driving circuit is formed, and the size of the dutycycle through above-mentioned master control set 4 outputs to controlling the switching time of switching component, thereby is controlled the electric current that it outputs to motor control assembly 6; Output-controlling device 5 is by electric supply installation 1 power supply.
Principle of work of the present invention and parameter
Motor control assembly is controlled electrical motor, like the brush DC three phase electric machine, and exportable phase line waveform or change waveform when this electrical motor rotates through Hall element output Hall.
Electric supply installation generally adopts direct supply such as battery or DC regulated power supply, and master control set and output-controlling device are supplied power.
The speed acquisition device rotates the motor phase line waveform or the Hall variation waveform that produce to motor and outputs in the master control set through behind the shaping filter.
Speed regulating device generally is made up of the device of an adjustable voltage, and the user can pass through pedal or handle regulating voltage, and this magnitude of voltage can be input in the master control set.
Output-controlling device generally comprises switching component, and driving circuit is formed, and the size of the dutycycle through master control set output to controlling the switching time of switching component, thereby is controlled the electric current that it outputs to motor control assembly.
Master control set generally comprises the input sample change-over circuit, main control chip, and output circuit is formed, and the sample conversion circuit can convert digital value into through A/D convertor circuit to the analogue value that is input in the master control set.The value that main control chip obtains according to sampling is carried out logical calculated and is confirmed that the size of output duty cycle outputs in the output-controlling device.
Because the speed of battery-driven car is the parameter (speed=rate of onset+acceleration/accel * time) that adds up a kind of time; The moment of torsion that motor control assembly adjustment output duty cycle can be adjusted battery-driven car produces acceleration/accel; But because actual road conditions; Resistance is different, and the moment of torsion of theoretical output can not hundred-percently be converted into acceleration/accel.Therefore the present invention calculates acceleration/accel according to output duty cycle, but directly calculates actual acceleration through the velocity variations value in judgement speed sampling device set time (T).
Further; The present invention has increased the upper and lower bound speed range in the limited speed value that requires; The upper and lower bound velocity amplitude is a dynamic velocity amplitude; Establishing method is in the set time (T), is constant acceleration with the acceleration/accel of time opening, calculates the maximum speed that possibly reach in this set time through speed formula.If the qualification velocity amplitude that maximum speed equals to set is the lower limit speed value with this speed then.Otherwise can get the upper limit speed value.
Further, if present speed is lower than lower limit speed, and the do not outpace maximum duty cycle of the maximum voltage decision that control apparatus sets of current output duty cycle, then master control set can increase output duty cycle., present speed do not surpass upper limit speed if being higher than lower limit speed; Even current output duty cycle is lower than the maximum duty cycle of the maximum voltage decision of speed regulating device setting; It is constant that then master control set can keep this dutycycle; If current output output duty cycle is higher than the maximum duty cycle of the maximum voltage decision of speed regulating device setting, then master control set can reduce output duty cycle.If present speed is higher than upper limit speed, the maximum duty cycle that the maximum voltage that control apparatus is set even current output duty cycle does not outpace is set, master control set can reduce output duty cycle.
Further, master control set can be according to the current value adjustment output duty cycle that limits.
Embodiment recited above describes preferred implementation of the present invention; Be not that design of the present invention and protection domain are limited; Under the prerequisite that does not break away from design concept of the present invention; Common engineering staff make technical scheme of the present invention in this area various modification and improvement all should fall into protection scope of the present invention.
Claims (1)
1. battery-driven car speed-limit device, comprising: electric supply installation (1), master control set (4), speed regulating device (3), motor control assembly (6); Electric supply installation (1) adopts direct supply, and master control set (4) is supplied power; Master control set (4) comprises input sample change-over circuit, main control chip, output circuit; Speed regulating device (3) is made up of the device of adjustable voltage, like pedal or handle regulating voltage; Motor control assembly (6) adopts electrical motor, like the brush DC three phase electric machine; It is characterized in that: this battery-driven car speed-limit device also comprises speed acquisition device (2) and output-controlling device (5), and speed acquisition device (2) uses the pace of change of gathering the motor hall device, gathers the pace of change of motor phase line; Output-controlling device (5) is by switching component, and driving circuit is formed, and the size of the dutycycle through above-mentioned master control set (4) output to controlling the switching time of switching component, thereby is controlled the electric current that it outputs to motor control assembly (6); Output-controlling device (5) is supplied power by electric supply installation (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101858824A CN102717710A (en) | 2012-05-29 | 2012-05-29 | Speed limiting device of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101858824A CN102717710A (en) | 2012-05-29 | 2012-05-29 | Speed limiting device of electric vehicle |
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| CN102717710A true CN102717710A (en) | 2012-10-10 |
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| CN2012101858824A Pending CN102717710A (en) | 2012-05-29 | 2012-05-29 | Speed limiting device of electric vehicle |
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| CN (1) | CN102717710A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910088A (en) * | 2012-11-09 | 2013-02-06 | 苏州海格新能源汽车电控系统科技有限公司 | Electric vehicle speed control method |
| CN103231661A (en) * | 2013-04-17 | 2013-08-07 | 孔令斌 | Electric vehicle driven by Stirling engine |
| CN104129318A (en) * | 2014-07-31 | 2014-11-05 | 深圳先进技术研究院 | Method and device for optimizing running condition of electric automobile |
| CN104175903A (en) * | 2014-08-26 | 2014-12-03 | 无锡新势力电机科技有限公司 | Motor speed limiting device with amplifying circuit and for electric vehicle |
| CN105539197A (en) * | 2015-12-15 | 2016-05-04 | 阳光电源股份有限公司 | Electric vehicle, electric vehicle motor controller and control method and device of electric vehicle motor controller |
| CN106740271A (en) * | 2016-12-05 | 2017-05-31 | 潍柴动力股份有限公司 | A kind of max. speed method for limiting and device for being applied to electric automobile |
| CN107336638A (en) * | 2016-11-30 | 2017-11-10 | 安徽江淮汽车集团股份有限公司 | The method and system for preventing electric vehicle from exceeding the speed limit |
| WO2018196312A1 (en) * | 2017-04-24 | 2018-11-01 | 太仓市悦博电动科技有限公司 | Motor control method, motor control device and electric bicycle |
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| CN202656872U (en) * | 2012-05-29 | 2013-01-09 | 山东润峰电子科技有限公司 | Device for limiting speed of electric vehicle |
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Patent Citations (6)
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| US5594413A (en) * | 1993-12-27 | 1997-01-14 | Hyundai Electronics Industries Co., Ltd. | Car collision prevention apparatus and method using dual processor and automatic sensor switching function |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910088A (en) * | 2012-11-09 | 2013-02-06 | 苏州海格新能源汽车电控系统科技有限公司 | Electric vehicle speed control method |
| CN102910088B (en) * | 2012-11-09 | 2015-04-22 | 苏州海格新能源汽车电控系统科技有限公司 | Electric vehicle speed control method |
| CN103231661A (en) * | 2013-04-17 | 2013-08-07 | 孔令斌 | Electric vehicle driven by Stirling engine |
| CN104129318A (en) * | 2014-07-31 | 2014-11-05 | 深圳先进技术研究院 | Method and device for optimizing running condition of electric automobile |
| CN104175903A (en) * | 2014-08-26 | 2014-12-03 | 无锡新势力电机科技有限公司 | Motor speed limiting device with amplifying circuit and for electric vehicle |
| CN105539197A (en) * | 2015-12-15 | 2016-05-04 | 阳光电源股份有限公司 | Electric vehicle, electric vehicle motor controller and control method and device of electric vehicle motor controller |
| CN107336638A (en) * | 2016-11-30 | 2017-11-10 | 安徽江淮汽车集团股份有限公司 | The method and system for preventing electric vehicle from exceeding the speed limit |
| CN107336638B (en) * | 2016-11-30 | 2019-05-07 | 安徽江淮汽车集团股份有限公司 | The method and system for preventing electric vehicle from exceeding the speed limit |
| CN106740271A (en) * | 2016-12-05 | 2017-05-31 | 潍柴动力股份有限公司 | A kind of max. speed method for limiting and device for being applied to electric automobile |
| CN106740271B (en) * | 2016-12-05 | 2019-05-28 | 潍柴动力股份有限公司 | A kind of max. speed method for limiting and device applied to electric car |
| WO2018196312A1 (en) * | 2017-04-24 | 2018-11-01 | 太仓市悦博电动科技有限公司 | Motor control method, motor control device and electric bicycle |
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Application publication date: 20121010 |