CN101934720B - Hybrid power driving system and driving method thereof - Google Patents
Hybrid power driving system and driving method thereof Download PDFInfo
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- CN101934720B CN101934720B CN200910108457.3A CN200910108457A CN101934720B CN 101934720 B CN101934720 B CN 101934720B CN 200910108457 A CN200910108457 A CN 200910108457A CN 101934720 B CN101934720 B CN 101934720B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
- F16H3/727—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously with at least two dynamo electric machines for creating an electric power path inside the gearing, e.g. using generator and motor for a variable power torque path
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- General Engineering & Computer Science (AREA)
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- Electric Propulsion And Braking For Vehicles (AREA)
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Abstract
The invention discloses a hybrid power driving system, which comprises an engine, a first motor generator, a second motor generator, an energy storing device, a drive mechanism, a clutch and a differential mechanism, wherein a rotor of the second motor generator is provided with a hollow structure; the differential mechanism is positioned in the hollow structure and comprises a first rotating element, a second rotating element and a third rotating element; the first rotating element is a planet carrier; the engine is connected to the first rotating element through the clutch; a rotor shaft of the first motor generator is connected with the second rotating element; a rotor shaft of the second motor generator is connected with the first rotating element; and the third rotating element is connected with the drive mechanism. The system at least works under the following working condition that: the engine is involved in driving and is operated in an oil consumption economical zone by adjusting the rotating speed of the first motor generator. The invention also provides a driving method of the hybrid power driving system. The hybrid power driving system can ensure that the engine is operated in the oil consumption economical zone, thereby better improving the fuel economy.
Description
Technical field
The present invention relates to hybrid electric vehicle field, relate in particular to a kind of hybrid electric drive system and driving method thereof.
Background technology
Prior art discloses a kind of by driving engine and motor-driven hybrid electric vehicle, comprises driving engine, motor, change-speed box and wheel drive shaft.Change-speed box comprises having the first sun and planet gear to the 3rd rotating element and free-wheel clutch.First rotating element (as sun wheel) of sun and planet gear is connected to the output shaft of driving engine, the second rotating element (as gear ring) is connected to the output shaft of motor, and the 3rd rotating element (as pinion carrier) is connected to wheel drive shaft.Free-wheel clutch is arranged between the first rotating element and driving engine, guarantees that driving engine is along a direction rotation, drags engine inversion while avoiding sun wheel reversion.
According to technique scheme, vehicle can be driven jointly by driving engine and motor, is driven separately, and driven separately by motor by driving engine.In the time that vehicle is driven separately by motor, can make change-speed box at underdrive operating, thereby motor can provide enough propulsive efforts to drive Vehicle Driving Cycle, when free-wheel clutch avoids driving engine not work simultaneously, dragged by counter.
On the basis of this technical scheme, can also between the gear ring of sun and planet gear and sun wheel, arrange power-transfer clutch, or arrange drg between gear ring and case of transmission, or arrange free-wheel clutch between gear ring and sun wheel, or arrange free-wheel clutch between gear ring and wheel drive shaft, etc., to meet different vehicle designing requirements.
In above-mentioned each technical scheme, can realize different vehicular drive patterns.But, the problem of its fuel economy when these technical schemes do not fully take into account driving engine participation work.
Summary of the invention
The present invention does not take into full account the problem of Fuel Economy when solving driving engine participation work in hybrid electric drive system, a kind of hybrid electric drive system is provided, wherein, in the time that driving engine participates in driving, described driving engine can always move in oil consumption economic zone.
A kind of hybrid electric drive system, this system comprises driving engine, the first dynamotor, the second dynamotor, the closed-center system being all connected with the second dynamotor with the first dynamotor, transmission device and power-transfer clutch, wherein, this system also comprises: box of tricks, the rotor of the second dynamotor has hollow structure, described box of tricks is arranged in described the second dynamotor, described box of tricks comprises the first rotating element, the second rotating element and the 3rd rotating element, described the first rotating element is pinion carrier, described driving engine is connected to described the first rotating element by described power-transfer clutch, the rotor shaft of the first dynamotor is connected with described the second rotating element, the rotor shaft of the second dynamotor is connected with described the first rotating element, described the 3rd rotating element is connected with transmission device, this drive system is at least functioning in following operating mode: driving engine participates in driving, by regulating the rotating speed of the first dynamotor, driving engine is moved in oil consumption economic zone.
The present invention also provides a kind of driving method of hybrid electric drive system, wherein this drive system is according to drive system of the present invention, the method comprises that controlling described drive system is at least functioning in following operating mode: described driving engine participates in driving, by regulating the rotating speed of the first dynamotor, driving engine is moved in oil consumption economic zone.
For driving engine, according to characteristic performance curve, each driving engine has definite oil consumption economic zone, and it is corresponding with the range of speed of driving engine.When engine operation is during in its oil consumption economic zone, fuel oil is most economical, oil consumption is minimum.
In technique scheme, described driving engine is connected to described the first rotating element by described power-transfer clutch, described drg is connected with described the second rotating element by the rotor shaft of the first dynamotor, the rotor shaft of described the second dynamotor is connected with described the first rotating element, and described the 3rd rotating element is connected with transmission device.Therefore, according to the rotation speed relation between three of box of tricks rotating elements, by controlling the rotating speed of the first dynamotor, rotating speed that can control engine, always makes it in the operation of oil consumption economic zone, thereby reduces better the oil consumption of driving engine.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment structural representation of hybrid electric drive system of the present invention;
Fig. 2 is according to the schematic diagram of rotation speed relation between the expression left half axle gear of one embodiment of the present invention, pinion carrier and right axle shaft gear.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are elaborated.
According to one embodiment of the present invention, as shown in Figure 1, a kind of hybrid electric drive system, this system comprises driving engine 1, the first dynamotor 8, the second dynamotor 4, the closed-center system 3 being all connected with the second dynamotor 4 with the first dynamotor 8, transmission device 6 and power-transfer clutch 2, wherein, this system also comprises: box of tricks 5, the rotor of the second dynamotor 4 has hollow structure, box of tricks 5 is arranged in the second dynamotor 4, box of tricks 5 comprises the first rotating element 51, the second rotating element 52 and the 3rd rotating element 53, the first rotating element 51 is pinion carrier, driving engine 1 is connected to the first rotating element 51 by power-transfer clutch 2, the rotor shaft of the first dynamotor 8 is connected with the second rotating element 52, the rotor shaft of the second dynamotor 4 is connected with the first rotating element 51, the 3rd rotating element 53 is connected with transmission device 6, this drive system is at least functioning in following operating mode: driving engine 1 participates in driving, by regulating the rotating speed of the first dynamotor 8, driving engine 1 is moved in oil consumption economic zone.
Further, this drive system also comprises drg 9, and drg 9 is connected with the second rotating element 52 by the rotor shaft of the first dynamotor 8.
The second rotating element 52 can be left half axle gear or right axle shaft gear, and the 3rd rotating element 53 can be right axle shaft gear or left half axle gear.
As a kind of embodiment, the second rotating element 52 is left half axle gear, and the 3rd rotating element 53 is right axle shaft gear.Pinion carrier is connected with the output shaft of driving engine 1 by power-transfer clutch 2, and pinion carrier is also connected with the rotor shaft of the second dynamotor 4 simultaneously.The rotor shaft of pinion carrier and the second dynamotor 4 can link together by various suitable modes, for example the rotor shaft of the shell of box of tricks and the second dynamotor 4 is made of one, in the time that the second dynamotor 4 rotates, can drive like this pinion carrier to rotate, in the time that pinion carrier is rotated, also can drive the second dynamotor 4 to rotate simultaneously.Left half axle gear is connected with drg by the rotor shaft of the first dynamotor 8, thereby for example passes through the rotor shaft of the first dynamotor 8 to extend being connected of realization and left half axle gear and drg 9.Now, the rotor shaft of the first dynamotor 8 can have hollow structure, the transmission shaft that connects pinion carrier and power-transfer clutch 2 can pass the hollow rotor shaft of the first dynamotor 8, thereby is conducive to arrange driving engine 1 and the first dynamotor 8, effectively saves installing space.
Because the rotor of the second dynamotor 4 has hollow structure, box of tricks 5 is arranged in the second dynamotor 4 inside and is positioned at the hollow structure of its rotor shaft, thereby is conducive to save installing space, makes whole driving system structure compacter.
Driving engine 1 can adopt gasoline or diesel oil etc. as fuel, and can pass through the outside outputting power of output shaft.
The first dynamotor 8 and the second dynamotor 4 are alternating current dynamo, as permagnetic synchronous motor; These two dynamotors all can be used as electrical generator and electrical motor uses, and now its mode of operation is respectively generating and electronic mode of operation.
Closed-center system 3 is a controlled energy storage units, can be lithium cell, iron cell, Ni-MH battery, Ni-Cr battery etc.Closed-center system 3 of the present invention can also have external charge interface (not shown), and therefore drive system of the present invention also has external power charging operating mode.Be, that closed-center system 3 charges by external charge interface.By this operating mode, charge period at low power consumption, for example evening or the late into the night, can reasonably utilize civil power.And, utilize many that commercial power charged Billy will be low by fuel engines cost of electricity-generating, therefore reduce the use cost of vehicle, and reduced environmental pollution.
Further, between closed-center system 3 and two dynamotors, can also be connected with respectively the first power inverter and the second power inverter (not shown), the first power inverter and the second power inverter can carry out two-way power conversion, thereby by the conversion of power conversion unit, the electric energy that two dynamotors can store closed-center system 3 is converted to power output, meanwhile, two dynamotors can also be that electrical power storage is in closed-center system 3 by power conversion.
Transmission device 6 generally includes transmission shaft, retarder, diff and the semiaxis etc. of vehicle.Semiaxis is connected with wheel 7, thereby can be by transmission of power to wheel 7 and then driving Vehicle Driving Cycle.
Control for convenient, drg 9 is preferably electric clipper control brake.
For driving engine, according to characteristic performance curve, each driving engine has definite oil consumption economic zone, and it is corresponding with the range of speed of driving engine.
Fig. 2 is according to the schematic diagram of rotation speed relation between the expression left half axle gear of one embodiment of the present invention, pinion carrier and right axle shaft gear.Wherein, N1 represents the rotating speed of the first dynamotor 8; N2 represents the rotating speed of driving engine 1 or driving engine 1 and the second dynamotor 4; N3 represents the rotating speed that input speed of transmission device 6 is exported from box of tricks 5.In Fig. 2, the joint of each rotation speed relation connection lead represents the rotating speed in the corresponding oil consumption of driving engine 1 economic zone.Rotation speed relation between three rotating elements is: N1+N3=2N2.As shown in Figure 2, in the time that Vehicle Speed is determined, the input speed of transmission device 6 is determined, the rotating speed that is operated in oil consumption economic zone due to driving engine 1 is definite, rotation speed relation according between three rotating elements: N1+N3=2N2, by regulating the rotating speed of the first dynamotor 8 can make rotating speed, the rotating speed of driving engine 1 and the input speed of transmission device 6 of the first dynamotor 8 meet the rotation speed relation between three rotating elements.The now rotating speed of the rotating speed of driving engine 1 in oil consumption economic zone.Therefore, technical scheme of the present invention can make driving engine 1 be operated in oil consumption economic zone, thereby can reduce better the oil consumption of driving engine 1, improves the fuel economy of whole drive system.
Further, as shown in Figure 2, in the time that driving engine 1 is operated in oil consumption economic zone, by regulating the rotating speed of the first dynamotor 8, the rotating speed of transmission device 6 can gradually change in certain speed range, can realize the infinite speed variation in certain limit.When driving engine 1 is during corresponding to other rotating speed, by regulating the rotating speed of the first dynamotor 8, the rotating speed of transmission device 6 also can change thereupon, so just can realize infinite speed variation.This drive system can realize infinite speed variation.
The present invention also provides a kind of driving method of hybrid electric drive system, wherein drive system is above-mentioned drive system, wherein, this driving method comprises that controlling this drive system is at least functioning in following operating mode: driving engine 1 participates in driving, by regulating the rotating speed of the first dynamotor 8, driving engine 1 is moved in oil consumption economic zone.。
Further, this drive system also comprises drg 9, and drg 9 is connected with the second rotating element 52 by the rotor shaft of the first dynamotor 8.
When Vehicle Driving Cycle needs larger moment of torsion, as climbing or while giving it the gun, driving engine 1 and dynamotor can drive Vehicle Driving Cycle jointly, and this driving method also comprises and controls this drive system in one of following operating mode:
Series-parallel connection operating mode 1: by the first dynamotor 8 and the common Vehicle Driving Cycle that drives of driving engine 1, now power-transfer clutch 2 combinations, drg 9 separates, also drive the second dynamotor 8 generate electricity and charge to closed-center system 3 simultaneously, be now that driving engine 1 is operated in oil consumption economic zone by regulating the rotating speed of the first dynamotor 8 can make the rotating speed of driving engine 1 in the rotating speed in oil consumption economic zone, in the time that driving engine 1 is operated in oil consumption economic zone, by regulating the rotating speed of the first dynamotor 8, the rotating speed of transmission device 6 can gradually change in certain speed range, can realize the infinite speed variation in certain limit,
Operating mode in parallel: by the common Vehicle Driving Cycle that drives of the first dynamotor 8, the second dynamotor 4 and driving engine 1, power-transfer clutch 2 combinations, drg 9 separates, be now that driving engine 1 is operated in oil consumption economic zone by regulating the rotating speed of the first dynamotor 8 can make the rotating speed of driving engine 1 in the rotating speed in oil consumption economic zone, in the time that driving engine 1 is operated in oil consumption economic zone, by regulating the rotating speed of the first dynamotor 8, the rotating speed of transmission device 6 can gradually change in certain speed range, can realize the infinite speed variation in certain limit.
Now, this driving method also comprises and controls this drive system in following operating mode:
Series-parallel connection operating mode 2: by the second dynamotor 4 and the common Vehicle Driving Cycle that drives of driving engine 1, now power-transfer clutch 2 combinations, drg 9 separates, and also drives the first dynamotor 8 generate electricity and charge to closed-center system 3 simultaneously.
In the time that driving engine drives separately, this driving method also comprises controls this drive system in one of following operating mode:
Engine drive operating mode 1: under this operating mode, vehicle is driven and travels separately by driving engine 1, power-transfer clutch 2 combinations, drg 9 is in conjunction with (i.e. braking), driving engine 1 can also drive the second dynamotor 4 generate electricity and charge to closed-center system 3 simultaneously, now, the second dynamotor 4 also can dally and not generate electricity;
Engine drive operating mode 2: under this operating mode, vehicle drives separately Vehicle Driving Cycle by driving engine 1, power-transfer clutch 2 combinations, drg 9 separates (not braking), driving engine 1 can also drive the first dynamotor 8 and the second dynamotor 4 jointly generate electricity and charge to closed-center system 3 simultaneously, now, the first dynamotor 8 and the second dynamotor 4 also can all dally and not generate electricity, or the second dynamotor 4 dallies and do not generate electricity and the first dynamotor 8 generates electricity and charges to closed-center system 3.
In the time that the energy in closed-center system 3 is sufficient, drive system can be operated under following pure electronic operating mode:
Pure electronic operating mode 1: drive separately Vehicle Driving Cycle by the second dynamotor 4, now power-transfer clutch 2 separates, drg 9 combinations;
Pure electronic operating mode 2: jointly driven by the first dynamotor 8 and the second dynamotor 4, now power-transfer clutch 2 separates, and drg 9 separates.
Hybrid electric drive system of the present invention can also be in following generating operation mode:
Power generation in parking operating mode: driving engine 1 starts, power-transfer clutch 2 combinations, when drg 9 separates, driving engine 1 can drive the first dynamotor 8 and the second dynamotor 4 to generate electricity simultaneously, also can drive separately the first dynamotor 8 to generate electricity, when drg 9 in conjunction with time, driving engine 1 can drive separately the second dynamotor 4 to generate electricity;
Feedback generating operation mode 1: power-transfer clutch 2 separates, drg 9 separates, and transmission device 6 drives the first dynamotor 8 and the second dynamotor 4 to generate electricity simultaneously;
Feedback generating operation mode 2: power-transfer clutch 2 separates, drg 9 combinations, transmission device 6 drives the second dynamotor 4 to generate electricity.
As mentioned above, because three rotating elements of box of tricks 5 are that the first rotating element 51, the second rotating element 52 are connected with transmission device 6 with driving engine 1, the first dynamotor 8 respectively with the 3rd rotating element 53, therefore, rotation speed relation between driving engine 1, the first dynamotor 8 and transmission device 6 threes meets the rotation speed relation between three rotating elements of box of tricks 5, as shown in Figure 2.Therefore, by controlling the rotating speed of the first dynamotor 8, can make driving engine 1 in the operation of oil consumption economic zone, thereby can reduce better the oil consumption of driving engine 1, improve fuel economy.
Claims (7)
1. a hybrid electric drive system, this system comprises driving engine, the first dynamotor, the second dynamotor, the closed-center system being all connected with the second dynamotor with the first dynamotor, transmission device and power-transfer clutch, it is characterized in that, this system also comprises: box of tricks and drg, the rotor of the second dynamotor has hollow structure, described box of tricks is arranged in described hollow structure, described box of tricks comprises the first rotating element, the second rotating element and the 3rd rotating element, described the first rotating element is pinion carrier, described driving engine is connected to described the first rotating element by described power-transfer clutch, the rotor shaft of the first dynamotor is connected with described the second rotating element, the rotor shaft of the second dynamotor is connected with described the first rotating element, described the 3rd rotating element is connected with transmission device, described drg is connected with described the second rotating element by the rotor shaft of the first dynamotor, this drive system is at least functioning in following operating mode: driving engine participates in driving, by regulating the rotating speed of the first dynamotor, driving engine is moved in oil consumption economic zone,
By regulating the rotating speed of the first dynamotor, make rotating speed, the rotating speed of driving engine and the input speed of transmission device of the first dynamotor meet following relational expression:
N1+N3=2N2, wherein N1 represents the rotating speed of the first dynamotor, and N2 represents the rotating speed of driving engine, and N3 represents the input speed of transmission device.
2. drive system according to claim 1, is characterized in that, described the second rotating element is left half axle gear, and described the 3rd rotating element is right axle shaft gear.
3. the driving method of a hybrid electric drive system, wherein said drive system is drive system according to claim 1, it is characterized in that, this driving method comprises that controlling described drive system is at least functioning in following operating mode: described driving engine participates in driving, by regulating the rotating speed of the first dynamotor, driving engine is moved in oil consumption economic zone.
4. driving method according to claim 3, is characterized in that, this driving method also comprises controls described drive system in one of following operating mode:
Series-parallel connection operating mode 1: jointly driven by the first dynamotor and driving engine, power-transfer clutch combination, drg separates, and drives the second dynamotor generating simultaneously, now, by regulating the rotating speed of the first dynamotor, driving engine is moved in oil consumption economic zone;
Operating mode in parallel: jointly driven by the first dynamotor, the second dynamotor and driving engine, power-transfer clutch combination, drg separates, and now, by regulating the rotating speed of the first dynamotor, driving engine is moved in oil consumption economic zone.
5. driving method according to claim 3, is characterized in that, this driving method also comprises that control described drive system realizes infinite speed variation under series-parallel connection operating mode 1 and operating mode in parallel.
6. driving method according to claim 3, is characterized in that, this driving method also comprises controls described drive system in following operating mode:
Series-parallel connection operating mode 2: jointly driven by the second dynamotor and driving engine, power-transfer clutch combination, drg separates, and drives the first dynamotor generating simultaneously.
7. driving method according to claim 3, is characterized in that, this driving method also comprises controls described drive system in one of following operating mode:
Engine drive operating mode 1: driven separately power-transfer clutch combination, drg combination, engine drive the second dynamotor generating simultaneously by driving engine;
Engine drive operating mode 2: driven separately by driving engine, power-transfer clutch combination, drg separates, and now driving engine also drives the first dynamotor and the generating of the second dynamotor simultaneously.
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| CN200910108457.3A CN101934720B (en) | 2009-06-30 | 2009-06-30 | Hybrid power driving system and driving method thereof |
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| CN200910108457.3A CN101934720B (en) | 2009-06-30 | 2009-06-30 | Hybrid power driving system and driving method thereof |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2768918C (en) * | 2011-02-24 | 2019-03-19 | Tai-Her Yang | Clutch device structured with controllable epicycle gear set and applied power train thereof |
| CN102166947B (en) * | 2011-03-10 | 2013-05-01 | 上海交通大学 | Multimode stepless speed-changing hybrid driving system |
| CN102381177B (en) * | 2011-08-18 | 2014-10-01 | 奇瑞汽车股份有限公司 | Electric four-drive hybrid system and control method thereof |
| CN106394224A (en) * | 2016-06-01 | 2017-02-15 | 中国第汽车股份有限公司 | Dual power input differential coupled continuously variable transmission system |
| CN106608175A (en) * | 2016-10-26 | 2017-05-03 | 联合汽车电子有限公司 | Hybrid electric vehicle power system and power transmission method thereof |
| CN107546912B (en) * | 2017-08-15 | 2019-04-16 | 河海大学 | A kind of compound four-quadrant motor speed regulation system of differential planet gear |
| CN109334428B (en) * | 2018-11-19 | 2023-09-12 | 吉林省晟林汽车传动科技有限公司 | Transmission special for hybrid electric vehicle |
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| WO2003035422A1 (en) * | 2001-10-23 | 2003-05-01 | The Timken Company | Output power split hybrid electric drive system |
| KR101028402B1 (en) * | 2005-04-11 | 2011-04-13 | 현대다이모스(주) | power train for a hybrid electric vehicle |
| CN100421979C (en) * | 2007-02-02 | 2008-10-01 | 吉林大学 | Power coupler for mixed power automobile |
| CN101450607B (en) * | 2007-12-03 | 2014-04-02 | 比亚迪股份有限公司 | Hybrid drive system and method |
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| CN200992139Y (en) * | 2006-12-19 | 2007-12-19 | 比亚迪股份有限公司 | Drive system of hybrid-power vehicle |
| CN101204922A (en) * | 2006-12-20 | 2008-06-25 | 比亚迪股份有限公司 | Mixed motor vehicle driving system |
| CN101465577A (en) * | 2007-12-18 | 2009-06-24 | 罗伯特.博世有限公司 | Compact servo driving device |
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