CN102079253A - Drive mode of multi-direct current hub motor electromobile - Google Patents
Drive mode of multi-direct current hub motor electromobile Download PDFInfo
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- CN102079253A CN102079253A CN2010101549094A CN201010154909A CN102079253A CN 102079253 A CN102079253 A CN 102079253A CN 2010101549094 A CN2010101549094 A CN 2010101549094A CN 201010154909 A CN201010154909 A CN 201010154909A CN 102079253 A CN102079253 A CN 102079253A
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- drive
- hub motor
- motor
- electromobile
- direct current
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- 238000004804 winding Methods 0.000 claims description 13
- 230000008859 change Effects 0.000 abstract description 13
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- 230000001141 propulsive effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- UPLPHRJJTCUQAY-WIRWPRASSA-N 2,3-thioepoxy madol Chemical compound C([C@@H]1CC2)[C@@H]3S[C@@H]3C[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@](C)(O)[C@@]2(C)CC1 UPLPHRJJTCUQAY-WIRWPRASSA-N 0.000 description 1
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- 150000001875 compounds Chemical class 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
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- 238000007599 discharging Methods 0.000 description 1
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- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
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- 230000009466 transformation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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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 drive mode of a multi-direct current hub motor electromobile, in particular to the technical field of automatic differential speed and stepless speed change drive of multi-direct current hub motor electromobiles. The drive mode is characterized by mainly comprising a plurality of direct current hub motors with same specifications, short-circuit switches correspondingly connected in parallel with the hub motors, a booster, a PWM (Pulse Width Modulation) speed controller and a battery pack. The invention has the functions of automatic differential drive of a hub motor, drive relief of individual hub motors, stepless speed change and the like, and is suitable for the electromobile with freely-arranged drive wheels and two or more wheels, driven by a direct-current hub motor. The electromobile adopting the technical scheme has the advantages of simple structure, reliability for work, good smoothness of driving, simpleness and reasonability of total arrangement of the vehicle, low manufacture and use costs and longer service life.
Description
Technical field
The present invention relates to a kind of drive pattern of many DC hub motors battery-driven car, be specifically related to a kind of automatic differential, stepless change actuation techniques field of many DC hub motors battery-driven car.
Background technology
Along with the develop rapidly of auto-industry, a large amount of dischargings of harmful tail gas and noise havoc existent environment of people, the energy resource consumption that sharply increases and waste the human following existence has been constituted serious threat.Elec. vehicle is pollution-free with it, noise is little, can directly or indirectly utilize the advantage of the clean energy resource and the renewable sources of energy, is subjected to government, car production producer, scientific research institutions and the unprecedented attention of numerous scientific research personnel.
At present, the type of drive of electronlmobil is to use for reference the type of drive of orthodox car mostly, promptly replaces driving engine as propulsion source with electrical motor, and power (speed and moment of torsion) is by power-transfer clutch (or turbine transformer), change speed gear box, be transferred to diff, distribute to drive wheel then and implement to drive.There is following problem in this drive pattern because the transmission of power link: the one, and complex structure, dead weight of vehicle is big, general layout is difficult, waste of material is serious; The 2nd, the gearing friction pair is many, and reactive loss such as heat and vibration are big; The 3rd, because above-mentioned two problems, cause that energy dissipation is big, flying power is poor; The 4th, functional reliability is lower.
Many wheel hub motors battery-driven car, total propulsive effort is allocated on each drive wheel, has overcome the deficiency of above-mentioned battery-driven car drive pattern, and the machine driven system link is greatly simplified, and driving efficiency height, consumptive material power consumption are less, reliable operation height, life-span be long.When the vehicle general design, be easy to adopt the all-independent suspension design, simplify vehicle general layout greatly, increase inner effectively usage space, improve the vehicle ' ride comfort.
Since DC machine have good adjustable speed, overload capacity change easily by force, anyway switch, motor generator is reversible changes, and is easy to satisfy the requirement of travelling of elec. vehicle energy feedback in stepless change, reversing, descending or braking procedure vehicles such as (increase flying powers).Therefore, the research to many DC hub motors battery-driven car drive pattern has great realistic significance.
Many DC wheel hub motors drive and want to be applied to preferably battery-driven car, must solve: problems such as drive wheel differential, indivedual drive wheel skid, motor weight is big.Be exactly specifically: 1. each drive wheel differential in the vehicle ' process drives, eliminating the circulating of power of vehicle in the uneven road surface process that turns to, travels, the hard steering that causes (f-w-d), steering system and transmission system overload, tire undue wear, the problem that reactive loss is big.2. individual wheel is on ice and snow road or in the mire, because tire adhesion force is little, and tyre skidding, car load loses propulsive effort.3. owing to use wheel hub motor, drive wheel weight (nonspring carried mass) is big, and the vehicle ' ride comfort is poor.
At present, many DC hub motors being driven differential generally is to adopt the electron steering pattern.Owing to used more sensor, computer and complicated circuit, cost an arm and a leg, functional reliability is poor, the troubleshooting difficulty, vehicle is purchased and the use cost height, has restricted popularizing of battery-driven car.
Up till now, also there are not a kind of reliable operation, simple in structure, dynamical many DC hub motors battery-driven car drive pattern.
Summary of the invention
The drive pattern that the purpose of this invention is to provide a kind of many DC hub motors battery-driven car, possess functions such as driving automatic differential, infinite speed variation, releasing part motor-driven, have wheel hub motor (or non-spring carries) quality is little, reliable operation, easy operation, lower-cost characteristics.
The present invention is by the following technical solutions: drive system of electric motor vehicle is mainly by the DC hub motor M of several same specification
i, short circuiting switch K
i, booster, PWM pulse duration modulation governor and battery pack constitute.Wherein: the booster structure is made of inverter, step-up transformer and rectifier for " straight-as to hand over-boost-straight " type; The quantity of motor and corresponding short circuiting switch thereof is determined according to the vehicle design needs.
The objective function of connecting mode and parts: 1. DC hub motor M
i(winding) connects successively, realizes that the motor differential drives.2. short circuiting switch K
iRespectively with motor M
iCorresponding one by one in parallel.When indivedual drive wheels skidded, closed its short circuiting switch was removed the wheel hub motor short circuit is temporarily driven, and other wheel hub motors obtain bigger energy.3. booster promotes battery voltage, reduces motor weight.4. PWM pulse duration modulation governor direct control and change battery pack power are exported to booster, realize stepless change.
Compare with common electronically controlled motor driving differential pattern, this pattern has following advantage: 1. do not need the differential control circuit, just can realize the automatic differential of drive wheel in the driving process.2. electronic devices and components such as sensor, control and executive circuit, computer use and lack, technology maturations such as PWM pulse duration modulation speed governing, inversion, transformation and rectification, and PWM pulse duration modulation governor is arranged in low tension terminal.So simple in structure, reliable operation, cost are low.3. individual wheel is skidded vehicle when losing propulsive effort, is easy to switch the drive wheel (with switch electrical short circuit winding, making it not work in driving power circuit) that skids, and whole vehicle is recovered or obtains propulsive effort.4. Applicable scope is wide, and simplicity of design can be used for the elec. vehicle of two-wheeled and above drive wheel.
The present invention is further detailed explanation below in conjunction with drawings and Examples.
Description of drawings
Accompanying drawing is structure diagram of the present invention (left part) and equivalent circuit (right side part).
Except that having indicated, the cooresponding title of symbol is as follows among the figure in the accompanying drawing:
M
1, M
2M
n: be the 1st to n DC hub motor;
K
1, K
2K
n: be respectively and motor M
1, M
2M
nCooresponding short circuiting switch;
E: battery pack;
V: Equivalent DC power line voltage;
R
0: be total equivalent resistance of the Equivalent DC power supply except that machine winding, circuit;
I: intensity of current;
L
1, L
2L
n: be the 1st winding to n DC hub motor;
R: be the 1st equivalent resistance to n DC hub motor winding;
ε
1, ε
2ε
n: the counter electromotive force that winding moves in magnetic field and produces when being the 1st to n DC hub motor driving.
(annotate: above intensity of current I and counter electromotive force ε are all instantaneous value.)
Specific embodiment
According to equivalent circuit in the accompanying drawing, DC machine is carried out transient analsis:
1, automatic differential
Know, have for series connected DC motor winding by physics knowledge:
I＝(V-∑ε
i)/(R
0+nR)………………………………(1)
∑ε
i＝ε
1+ε
2+…+ε
n ………………………………(2)
Analyze deduction from formula: because the construction parameter of DC machine is all identical, when we are together in series them and at both ends when applying voltage, at any time, no matter how different motor speed (Vehicular turns or travel on uneven road surface), the total current that each machine winding is passed through is all identical.Furtherly, be exactly in above-mentioned situation, no matter the version of DC machine is shunt excitation, series excitation, compound DC machine, or permanent magnet DC motor, each rotor DC machine and electric current all identical respectively (permanent magnet DC motor has only stator or rotor) in the stator winding.The torque (propulsive effort) of each DC machine is all identical so, at this moment.This is the theoretical basis that realizes automatic differential.
We test with real-world operation, and above-mentioned conclusion has been carried out correctness and feasibility checking.
2, remove the energy input of the drive wheel that skids individually, recover or acquisition car load propulsive effort
When indivedual drive wheels travelled in ice and snow road or mire, vehicle wheel rotational speed can increase sharply and skid, and car load loses driving.Its reason is: these (or individual) wheel hub motors impose on ground-surface earth-grasping force greater than ground-surface adhesive ability by tire, tyre slip, and motor speed rises rapidly, and the counter electromotive force ε of described motor rises rapidly simultaneously, by (1) formula ∑ ε as can be known
iIncrease rapidly, cause I to reduce rapidly, each drive wheel output torque also reduces rapidly.When until V=∑ ε
iThe time, the energy of battery pack output is almost all supplied with the drive wheel that trackslips, and car load loses propulsive effort.
In these cases, if closure is trackslipped the cooresponding short circuiting switch of drive wheel (wheel hub motor) with the machine winding short circuit, these (or individual) wheel hub motors are got rid of outside whole drive system, still be communicated with and drive power circuit, the energy of battery pack output is supplied with remaining wheel hub motor (drive wheel), vehicle is recovered or obtain propulsive effort to move ahead." differential locking-device " of this similar general automobile.
3, stepless change
PWM pulse-width modulation circuit technology by very ripe PMW pulse duration modulation governor, the output of control and change battery pack average current intensity (power or energy), thereby control and change the output speed and the moment of torsion of each DC hub motor, realize the battery-driven car stepless change.Because the output of PWM pulse duration modulation governor direct control low pressure has improved functional reliability, has reduced cost.
4, rising drives the DC machine driving voltage, reduces motor weight, improves the vehicle ' ride comfort
In conjunction with analysis, (1) formula is further analyzed automatic differential:
If still adopt low voltage drive, adopt the motor tandem drive, (R
0+ nR) certainly will increase, certainly will cause that electric current I reduces, cause each DC machine to be exerted oneself and reduce.For reaching the driving requirement of vehicle, must increase electric current I, promptly can only reduce (R
0+ nR).Because R
0Determine by the vehicle structure parameter, can only reduce R, promptly increase winding wire diameter.What bring like this is not only the increase owing to motor weight, the problem that the vehicle ' ride comfort descends, but also brings because R
0The dividing potential drop increase causes the problem that idle waste of heat increases, the vehicle flying power descends.
Adopt " straight-as to hand over-boost-straight " booster to amplify the output voltage of battery pack,, solved the problems referred to above effectively to improve the driving voltage of each DC hub motor.Simultaneously, can also optimize type selecting, reduce the motor winding wire footpath to greatest extent, reduce motor weight, improve the vehicle ' ride comfort by motor.
In sum, be somebody's turn to do " drive pattern of many DC hub motors battery-driven car ", can satisfy battery-driven car fully and drive, handle and take requirement.Adopt the battery-driven car of the technical program not only to possess functions such as differential, differential locking-device, stepless change, and functional reliability and riding comfort height, low, the easy operation of manufacturing cost and use cost, battery-driven car universal had very positive facilitation.
Claims (5)
1. the drive pattern of DC hub motor battery-driven car more than a kind is characterized in that: this pattern by battery pack, PWM pulse duration modulation governor, booster with the identical DC hub motor of, several specifications and with its one to one short circuiting switch form.
2. drive pattern as claimed in claim 1 is characterized in that: each DC hub motor windings in series is connected to the booster mouth.
3. drive pattern as claimed in claim 1 is characterized in that: each DC hub motor short circuiting switch all in parallel.
4. drive pattern as claimed in claim 1 is characterized in that: booster is made up of inverter, step-up transformer and rectifier etc.
5. drive pattern as claimed in claim 1 is characterized in that: PWM pulse duration modulation governor direct control battery pack power is exported to booster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101549094A CN102079253B (en) | 2010-03-31 | 2010-03-31 | Drive mode of multi-direct current hub motor electromobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101549094A CN102079253B (en) | 2010-03-31 | 2010-03-31 | Drive mode of multi-direct current hub motor electromobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102079253A true CN102079253A (en) | 2011-06-01 |
| CN102079253B CN102079253B (en) | 2013-02-20 |
Family
ID=44085516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101549094A Active CN102079253B (en) | 2010-03-31 | 2010-03-31 | Drive mode of multi-direct current hub motor electromobile |
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| Country | Link |
|---|---|
| CN (1) | CN102079253B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5880574A (en) * | 1995-12-29 | 1999-03-09 | Honda Giken Kogyo Kabushiki Kaisha | Control system for electric vehicle |
| CN2839021Y (en) * | 2005-10-23 | 2006-11-22 | 刘宗锋 | Electric motor vehicle |
| CN2863536Y (en) * | 2006-02-14 | 2007-01-31 | 刘宗锋 | Full speed electric automobile |
| CN200987123Y (en) * | 2006-12-26 | 2007-12-05 | 深圳市锐明视讯技术有限公司 | Vehicle mounted electrical source switching device |
| CN101524968A (en) * | 2008-03-05 | 2009-09-09 | 刘进玉 | Four-wheel drive mechanism |
-
2010
- 2010-03-31 CN CN2010101549094A patent/CN102079253B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5880574A (en) * | 1995-12-29 | 1999-03-09 | Honda Giken Kogyo Kabushiki Kaisha | Control system for electric vehicle |
| CN2839021Y (en) * | 2005-10-23 | 2006-11-22 | 刘宗锋 | Electric motor vehicle |
| CN2863536Y (en) * | 2006-02-14 | 2007-01-31 | 刘宗锋 | Full speed electric automobile |
| CN200987123Y (en) * | 2006-12-26 | 2007-12-05 | 深圳市锐明视讯技术有限公司 | Vehicle mounted electrical source switching device |
| CN101524968A (en) * | 2008-03-05 | 2009-09-09 | 刘进玉 | Four-wheel drive mechanism |
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| Publication number | Publication date |
|---|---|
| CN102079253B (en) | 2013-02-20 |
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Fan Yongjian Inventor after: Chu Weitao Inventor after: Wang Yanning Inventor after: Wang Meng Inventor after: Qin Yuquan Inventor after: Fan Honglei Inventor after: Chen Bing Inventor after: Fan Hongfei Inventor after: Fan Hongcheng Inventor before: Fan Yongjian Inventor before: Chu Weitao Inventor before: Wang Yanning Inventor before: Tan Qinggang Inventor before: Qin Yuquan Inventor before: Fan Honglei Inventor before: Chen Bing Inventor before: Fan Hongfei Inventor before: Fan Hongcheng |
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Free format text: CORRECT: INVENTOR; FROM: FAN YONGJIAN CHU WEITAO WANG YANNING TAN QINGGANG QIN YUQUAN FAN HONGLEI CHEN BING FAN HONGFEI FAN HONGCHENG TO: FAN YONGJIAN CHU WEITAO WANG YANNING WANG MENG QIN YUQUAN FAN HONGLEI CHEN BING FAN HONGFEI FAN HONGCHENG |
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Inventor after: Fan Yongjian Inventor after: Kang Shouwu Inventor after: Kang Zhenyi Inventor after: Chu Weitao Inventor after: Wang Yanning Inventor after: Wang Meng Inventor after: Qin Yuquan Inventor after: Fan Honglei Inventor after: Chen Bing Inventor after: Fan Hongfei Inventor after: Fan Hongcheng Inventor before: Fan Yongjian Inventor before: Chu Weitao Inventor before: Wang Yanning Inventor before: Wang Meng Inventor before: Qin Yuquan Inventor before: Fan Honglei Inventor before: Chen Bing Inventor before: Fan Hongfei Inventor before: Fan Hongcheng |
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Effective date of registration: 20160715 Address after: 030000 Shanxi Province, Taiyuan city Yingze District State Road No. 35 Patentee after: Rabbit Network Technology Co., Ltd. Address before: 261031 Shandong Province, Weifang city Kuiwei District Yuhe Road No. 436 Dongtai garden 7-3-402 Patentee before: Fan Yongjian |
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Effective date of registration: 20210902 Address after: 030000 room 610, 6 / F, building 1, headquarters park, No. 52, Longsheng street, Tanghuai Park, Taiyuan, Shanxi comprehensive reform demonstration zone, Taiyuan, Shanxi Province Patentee after: Yutu New Energy Vehicle Co.,Ltd. Address before: No.35 Bingzhou North Road, Yingze District, Taiyuan City, Shanxi Province Patentee before: Rabbit Network Technology Co.,Ltd. |
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