CN102303515B - Power system of hybrid electric vehicle - Google Patents
Power system of hybrid electric vehicle Download PDFInfo
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- CN102303515B CN102303515B CN201110155593.5A CN201110155593A CN102303515B CN 102303515 B CN102303515 B CN 102303515B CN 201110155593 A CN201110155593 A CN 201110155593A CN 102303515 B CN102303515 B CN 102303515B
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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
- Y02T10/62—Hybrid vehicles
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Abstract
The invention provides a power system of a hybrid electric vehicle (HEV). The power system comprises the following main components: two motors, an engine, a planetary gear train, two electromagnetic clutches, a battery and an inverter, wherein the engine is connected with the annular inner gear of the planetary gear train; a first motor is connected with the sun gear of the planetary gear train through a sleeve shaft; the planetary rack of the planetary gear train can be fixed on a tank body by virtue of a second electromagnetic clutch and can also be connected with the output shaft of a second motor through a first electromagnetic clutch; and the output shaft of the second motor is connected with a primary change gear. The power system provided by the invention has three operation modes, namely pure electromotion, series hybrid power and parallel hybrid power. By utilizing the power system, the pure electromotion under most of conditions can be ensured, and formula operation can be increased when in necessary, thereby maximally realizing the convenience, low energy consumption and zero emission (or the lowest emission).
Description
Technical field
The present invention relates to automobile dynamic system, more particularly to a kind of dynamical system of hybrid vehicle.
Background technology
Hybrid vehicle has the advantages that fuel-economizing and low emission, but still provides power by fuel oil.Pure electric automobile is then without fuel oil, but under current battery technical conditions, and the mileage that once charges is limited.Stroke lengthening hybrid power automobile can comprehensive electric automobile and orthodox car advantage, in necessarily design mileage, it can realize zero oil consumption and zero-emission with pure motor driving.If necessary to travel over long distances, then it can be run in the case where increasing journey pattern.The hybrid power system used at present in auto industry circle（Including increasing journey design）Usually serial hybrid system either parallel hybrid system, complex structure, manufacturing cost costliness, and operational mode is limited.
The content of the invention
The purpose of the present invention is a kind of dynamical system of hybrid vehicle, to realize low energy consumption, low emission or zero-emission.The system of the present invention possesses pure electronic, series hybrid-power and parallel hybrid power Three models.The automobile for equipping this system can be completely pure electronic in certain mileage.If necessary to drive over long distances, then it can be run with series hybrid mode or parallel hybrid mode.
The present invention provides a kind of dynamical system of hybrid vehicle, and it includes following critical piece：
Two motors, one engine, one planet circular system, two electromagnetic clutch, battery and inverter, engine are connected with the ring internal gear of planet circular system, first motor is connected by covering axle with the sun gear of planet circular system, the planet carrier of planet circular system can be fixed on casing by the second electromagnetic clutch, can also be connected by the first electromagnetic clutch with the second motor output shaft, the second motor output shaft is connected with main change gear；
This patent automobile dynamic system has three operational modes：It is pure electronic, series hybrid-power, parallel hybrid power；
Pure electric operation pattern：Automobile is in this mode operation, and the first electromagnetic clutch and the second electromagnetic clutch are all in open operating mode, and engine and the first motor are all closed, and automobile is driven by the motor of motor second, and all driving forces are provided by battery；
Series hybrid mode：Automobile is in this mode operation, second electromagnetic clutch is closed, first electromagnetic clutch is opened, because the second electromagnetic clutch is closed, the planet carrier of planet circular system is fixed on casing, when entering this pattern, engine is first by the first electric motor starting, then the first electric power generation is supplied power to by planet circular system, in such a mode, automobile is still driven by the second motor, this pattern is actually series operation pattern, that is, the electric power generation of engine driving first, the electric energy sent is supplied to the second electromobile, unnecessary electric energy can also be charged the battery by inverter, this pattern be adapted in low-power operating mode when to increase journey mode operation；
Parallel hybrid mode：Automobile is in this mode operation, and the second electromagnetic clutch is opened, and the first electromagnetic clutch closure, this pattern is adapted to automobile high power requirements operating mode, and this pattern is actually a kind of electronic CVT mode, mainly as extended-range mode operation.
Preferably, engine is connected with the ring internal gear of planet circular system, first motor is connected with the sun gear of planet circular system, and the planet carrier of planet circular system can be connected by the second electromagnetic clutch and casing, can also be connected by the first electromagnetic clutch with the second motor output shaft.
Preferably, it has three operational modes, i.e. electric-only mode, series hybrid mode and parallel hybrid mode, because with this three patterns, the vehicle for equipping this system can be in certain mileage by pure electric operation, when needing long distance running, increasing journey pattern can be used（Series hybrid-power or parallel hybrid mode）Operation.
Preferably, it has the first electromagnetic clutch and the second electromagnetic clutch, and the planet carrier of planet circular system is fixed on casing by the second electromagnetic clutch when closing, and the planet carrier of planet circular system is connected by the first electromagnetic clutch when closing with the second motor output shaft.
Comprehensive hybrid power system for automobile proposed by the present invention is designed using planetary gear, simple in construction, possesses pure electronic, series hybrid-power, and three kinds of operational modes of parallel hybrid power are a kind of extended-range hybrid powers of Almightiness type.The system present invention solves the hybrid vehicle that presently, there are and pure electric automobile high cost, the short technical problem such as with complex structure of mileage.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the present invention.
Accompanying drawing 2 is the operation principle schematic diagram of the electric-only mode of the present invention.
Accompanying drawing 3 is the operation principle schematic diagram of the series hybrid mode power of the present invention.
Accompanying drawing 4 is the operation principle schematic diagram of the parallel hybrid mode of the present invention.
In accompanying drawing：1st, the first motor；2nd, the second motor；3rd, planet carrier；4th, sun gear；5th, ring internal gear；6th, engine；7th, battery；8th, the first electromagnetic clutch；9th, the second electromagnetic clutch；10th, inverter；11st, axle is covered；12nd, the second motor output shaft；13rd, main change gear.
Embodiment
Presently preferred embodiments of the present invention is described in detail 1-4 below in conjunction with the accompanying drawings, so that advantages and features of the invention can be easier to be understood by the person skilled in the art, and apparent is clearly defined so as to be made to protection scope of the present invention.
The power system architecture of hybrid vehicle proposed by the invention is as shown in Figure 1.This system includes an engine 6, the first motor 1 and the second motor 2, a planet circular system, the first electromagnetic clutch 8 and the second electromagnetic clutch 9, a Battery pack 7 and drive electronic system（That is inverter 10）.Engine 6 is connected with the ring internal gear 5 of planet circular system, first motor 1 is connected by covering axle 11 with the sun gear 4 of planet circular system, the planet carrier 3 of planet circular system can be connected by the second electromagnetic clutch 9 and casing, can also be connected by the first electromagnetic clutch 8 with the second motor output shaft 12.Second motor output shaft 12 is connected with the input shaft of main change gear 13.
Structure as shown in Figure 1 is adapted to front-wheel drive, rear wheel drive and four-wheel drive.Different driving system is that output end further part shown in accompanying drawing 1 is different.The power system operational principle for the hybrid vehicle invented is as described below.
Electric-only mode：
In such a mode, engine 6 is closed with the first motor 1.First electromagnetic clutch 8 and the second electromagnetic clutch 9 are in open state.This mode adaptive vehicle starting, reversing, low cruise and cruising condition.Suitable velocity interval is about -30 kilometers/hour to 50 kilometers/hour, 0 to 30 kilowatt of power demand scope.This mode power is all provided by battery 7, and its power transmission line is as shown in Figure 2.
As the final ratio after the second motor output shaft 12 is
, then the relation between driving wheel and the second motor 2 between torque and rotating speed be：
Herein,
With
For the rotating speed and torque of the second motor 2,
With
For the rotating speed and torque of driving wheel.
Series hybrid mode：
In such a mode, the second electromagnetic clutch 9 is closed, and the first electromagnetic clutch 8 is opened.Because the second electromagnetic clutch 9 is closed, the planet carrier 3 of planet circular system is fixed on casing.When automobile enters this operational mode, engine 6 is started by the first motor 1 first.Then engine 6 drives the first motor 1 to generate electricity by planet circular system.The electric power sent can directly drive the second motor 2 and drive or charge the battery.It is about 0 ~ 50 kilometer/hour that this pattern, which is adapted to velocity interval, and power bracket is about 30 ~ 50Kw.
The power transmission line of this pattern is as shown in Figure 3.
There are following rotating speed and moment conditions between first motor 1 under this pattern, the second motor 2, engine 6, driving wheel：
Herein,
,
Respectively engine 6 and the rotating speed of ring internal gear 5,
,
The respectively moment of torsion of the first motor 1 and engine 6,
For planetary gear parameter, it is equal to the number of teeth of ring internal gear 5 divided by the number of teeth of sun gear 4.
Parallel connection mixing mixed mode：
In such a mode, the second electromagnetic clutch 9 is opened, and the first electromagnetic clutch 8 is closed.This pattern is adapted to high power requirements operating mode, and the suitable velocity interval of institute is more than 50 kilometers/hour, and power demand scope is more than 50 kilowatts.Power transmission line is as shown in Figure 4 under this pattern.
In such a mode, there is following rotating speed and torque relationship between engine 6, the first motor 1 and the second motor 2, driving wheel：
The switching of operational mode：
According to different operating modes and battery charge, automobile switches between three patterns.For convenience of description, electric-only mode is now defined as pattern one, series hybrid mode is defined as pattern two, and parallel connection mixing mixed mode is defined as pattern three.
Switch between Three models as described below：
One → pattern of pattern two：Automobile is when pattern one is run, engine 6, the first motor 1, and planetary gear remains static.Because planet circular system has two frees degree, the second electromagnetic clutch 9 can be engaged smoothly easily.After the engagement of second electromagnetic clutch 9, the first motor 1 first starts engine 6, is run subsequently into pattern two.
Two → pattern of pattern three：When slave pattern two switches to pattern three, first depart from the second electromagnetic clutch 9, then the rotating speed at the two ends of the first electromagnetic clutch 8 is reached after synchronization by controlling the rotating speed of the first motor 1, then the first electromagnetic clutch 8 is closed.Thus can efficiently it be switched with the steady of implementation pattern two to pattern three.
One → pattern of pattern three：Under vehicle control unit controls, automobile elder generation slave pattern one is switched to pattern two, and then slave pattern two is switched to pattern three again.
Two → pattern of pattern one：The second electromagnetic clutch 9 need to only be separated, engine 6 stops working, the power-off of the first motor 1.
Three → pattern of pattern one：The first electromagnetic clutch 8 need to only be separated, engine 6 stops working, the power-off of the first motor 1.
Three → pattern of pattern two：The first electromagnetic clutch 8 is separated first, then makes planet carrier 3 and rotating speed be zero by controlling the rotating speed of the first motor 1, then makes the second electromagnetic clutch 9 without the steady combination of impact.
Various patterns as described above are selected according to vehicle behavior and the charge volume of battery 7, to reach dynamic property, comfortableness, low energy consumption, the optimum results of low emission.Because electric-only mode can reach the stroke of 100 kms according to design requirement, the dynamical system of such a hybrid vehicle can ensure pure electric operation in most circumstances, and extended-range is run if necessary, so as to realize convenience to the full extent, low energy consumption, zero-emission（Or minimum discharge）.
Detailed technology elaboration has been carried out to the power system architecture and principle and embodiment of hybrid vehicle proposed by the present invention above.It is obvious that on the basis of without departing from scope and spirit of the present invention, can be to existing invention（Including technical matters）Modify, in the technical field of the invention, a GPRS technical minimum, it is possible in the range of the technology main idea of the present invention carries out various changes.
Claims (1)
1. a kind of dynamical system of hybrid vehicle, it is characterised in that：It includes following critical piece：
Two motors, one engine, one planet circular system, two electromagnetic clutch, battery and inverter, engine are connected with the ring internal gear of planet circular system, first motor is connected by covering axle with the sun gear of planet circular system, the planet carrier of planet circular system can be fixed on casing by the second electromagnetic clutch, can also be connected by the first electromagnetic clutch with the second motor output shaft, the second motor output shaft is connected with main change gear；
This dynamical system has three operational modes：It is pure electronic, series hybrid-power, parallel hybrid power；
Pure electric operation pattern：Automobile is in this mode operation, and the first electromagnetic clutch and the second electromagnetic clutch are all in open operating mode, and engine and the first motor are all closed, and automobile is driven by the motor of motor second, and all driving forces are provided by battery；
Series hybrid mode：Automobile is in this mode operation, second electromagnetic clutch is closed, first electromagnetic clutch is opened, because the second electromagnetic clutch is closed, the planet carrier of planet circular system is fixed on casing, when entering this pattern, engine is first by the first electric motor starting, then the first electric power generation is supplied power to by planet circular system, in such a mode, automobile is still driven by the second motor, this pattern is actually series operation pattern, that is, the electric power generation of engine driving first, the electric energy sent is supplied to the second electromobile, unnecessary electric energy can also be charged the battery by inverter, this pattern be adapted in low-power requirements operating mode when to increase journey mode operation；
Parallel hybrid mode：Automobile is in this mode operation, and the second electromagnetic clutch is opened, and the first electromagnetic clutch closure, this pattern is adapted to automobile high power requirements operating mode, and this pattern is actually a kind of electronic CVT mode, mainly as extended-range mode operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110155593.5A CN102303515B (en) | 2011-06-10 | 2011-06-10 | Power system of hybrid electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110155593.5A CN102303515B (en) | 2011-06-10 | 2011-06-10 | Power system of hybrid electric vehicle |
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| CN102303515A CN102303515A (en) | 2012-01-04 |
| CN102303515B true CN102303515B (en) | 2014-03-19 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107600257B (en) * | 2017-09-06 | 2020-10-30 | 长沙小新新能源科技有限公司 | Scooter for disabled people |
| CN108839551B (en) * | 2018-06-28 | 2020-05-08 | 奇瑞汽车股份有限公司 | Hybrid power system and control method |
| CN108839550B (en) * | 2018-06-28 | 2020-09-04 | 奇瑞汽车股份有限公司 | Hybrid power system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1176903A (en) * | 1996-09-13 | 1998-03-25 | 丰田自动车株式会社 | Power output apparatus and method of controlling same |
| US7057304B2 (en) * | 2004-02-25 | 2006-06-06 | Nissan Motor Co., Ltd. | Drive control of hybrid electric vehicle |
| CN101628542A (en) * | 2008-07-15 | 2010-01-20 | 中国北方车辆研究所 | Power-split hybrid driving device with blocking function |
| CN202174928U (en) * | 2011-06-10 | 2012-03-28 | 苏州安远新能源动力有限公司 | Power system of hybrid vehicle |
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2011
- 2011-06-10 CN CN201110155593.5A patent/CN102303515B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1176903A (en) * | 1996-09-13 | 1998-03-25 | 丰田自动车株式会社 | Power output apparatus and method of controlling same |
| US7057304B2 (en) * | 2004-02-25 | 2006-06-06 | Nissan Motor Co., Ltd. | Drive control of hybrid electric vehicle |
| CN101628542A (en) * | 2008-07-15 | 2010-01-20 | 中国北方车辆研究所 | Power-split hybrid driving device with blocking function |
| CN202174928U (en) * | 2011-06-10 | 2012-03-28 | 苏州安远新能源动力有限公司 | Power system of hybrid vehicle |
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Granted publication date: 20140319 Termination date: 20200610 |