CN103802652B - Double-star-planet-gear three-mode electromechanical composite transmission device - Google Patents
Double-star-planet-gear three-mode electromechanical composite transmission device Download PDFInfo
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- CN103802652B CN103802652B CN201410039982.5A CN201410039982A CN103802652B CN 103802652 B CN103802652 B CN 103802652B CN 201410039982 A CN201410039982 A CN 201410039982A CN 103802652 B CN103802652 B CN 103802652B
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Abstract
The invention discloses a double-star-planet-gear three-mode electromechanical composite transmission device which comprises three planet gears, four operation elements and two motors. By means of cooperation of the four operation elements, three different work modes are achieved, and three fixed gears are available.
Description
Technical field
The present invention relates to a kind of driving device of vehicle, particularly relate to the three-mode power transmission device of a kind of motor vehicle driven by mixed power, particularly large-tonnage, heavily loaded motor vehicle driven by mixed power.
Background technology
Motor vehicle driven by mixed power, due to its good power performance and the economy performance, is applied more and more extensive.The motor vehicle driven by mixed power of domestic enterprise's exploitation have employed the scheme of series and parallel connections more, but the motor vehicle driven by mixed power of advanced person mostly adopts series parallel type power drive.Toyota Prius obtains huge success, it is using planet circular system as power connecting mechanism, driving engine outputs power to a certain component of planet circular system, planet circular system presses fixed proportion by torque distribution to electrical generator, converting electric energy is mechanical energy by electrical motor, superposes laggard action edge export with output torque.Owing to have employed planet circular system, when the speed of a motor vehicle changes, regulator generator rotating speed can be carried out by means of the electric energy generated controlling electrical generator, thus stablize engine speed, optimize engine behavior; Also can expand a whole set of transmission system output speed scope, thus play the effect of similar toric transmission.
The project plan comparison of Toyota Company is applicable to being applied to C-class, for heavy-duty vehicle, the overland vehicle of usage condition complexity, if realize big power variable speed, then needs to adopt more high-performance electrical generator, electrical motor.How to reduce the power demand of electrical generator, electrical motor, improve drive train power density, reducing costs, is current large-tonnage, the heavily loaded hybrid electric vehicle technical issues that need to address.
Effective method adopts the electromechanical combined transmission system of multi-mode the most at present, the electromechanical combined transmission system of multi-mode utilizes the continuous conversion of motor self " generating/electronic " state, by coordinating of multiple electric motors and mechanical variable speed device, can under the constant prerequisite of system input speed, zonal cooling changes system output speed, realizes stepless shift function.
AM General company proposes double mode hybrid power scheme, and (patent No.: 5931757), a kind of three-mode power transmission device for motor vehicle driven by mixed power of China's patent (patent No.: ZL201110057445.X) is all applicable to large-tonnage, heavily loaded hybrid electric vehicle.The electromechanical compound gearing that the present invention proposes is different from such scheme, and apparatus structure form is succinct, compact, is easy to carry out engineering design.Three-mode electromechanical compound gearing of the present invention, through retrieving domestic and international patent, finds no the organization plan identical with the present invention.
Summary of the invention
Main purpose of the present invention is to provide a kind of double star row three-mode electromechanical compound gearing, both can be used for continuously tracked vehicle and also can be used for wheeled car, two interior external toothing double star planet rows and a simple planet row is adopted to realize three-mode electromechanical compound gearing by the type of attachment of innovation, apparatus structure form is succinct, compact, is easy to carry out engineering design.
Object of the present invention can be realized by following approach:
This programme is made up of three planet rows, four operating elements and two motor/generators, and wherein first planet row and third planet row are double star planet row, namely have inside and outside two planetary wheels be meshed respectively.Realize three different mode of operations by the cooperating of four operating elements, three static stalls can also be realized in addition.
Input power is delivered to the pinion carrier of first planet row through idle pulley straight gear.The gear ring of first planet row is connected with the sun wheel that third planet is arranged with the pinion carrier of the second planet row.The sun wheel of first planet row is connected with the first motor/generator rotor, and is connected by the gear ring of first clutch with the second planet row.
The gear ring of the second planet row is also connected with the first drg except the sun wheel of being arranged by first clutch and first planet is connected with the first motor/generator rotor.The sun wheel of the second planet row is connected with the second motor/generator rotor, and is connected by the pinion carrier that second clutch and third planet are arranged.
The pinion carrier of third planet row is also connected with second brake except the sun wheel by second clutch and the second planet row is connected with the second motor/generator rotor.The gear ring of third planet row is connected with the output shaft of straight speed change system.
First motor/generator, the second motor/generator are connected with controller by wire, and controller is connected with closed-center system by wire.Closed-center system can select chemical storage batteries, also can select super capacitor or flying wheel battery etc.
Described drg is wet multi-disk brake, and described power-transfer clutch is multi-disc wet clutch.
The first described motor/generator, the second motor/generator are permagnetic synchronous motor, and rotor is hollow shaft.
Advantage of the present invention is: have higher low speed high torque output characteristic, can meet the demand of vehicle climb very steep slopes; Can realize three different combination drive patterns by the operation of clutch brake, and can realize switching without fast differential force between adjacent two patterns, output speed is that continuously linear exports under three mode of operations; The slightly little motor of power can be selected to drive, still can meet the requirement of power performance index.
Mode of operation one: the first drg and second brake combine, and can export larger torque, meet the demand of vehicle acceleration and climbing.
Mode of operation two: first clutch and second brake combine, and are connected mutually, the traveling of the low speed of a motor vehicle in can realizing with the maximum speed of mode of operation one.
Mode of operation three: first clutch and second clutch combine, and have higher output speed, is applicable to the middle high speed of a motor vehicle and travels.
Three mode of operations cover all vehicle speed ranges of vehicle, and meet the low speed climbing demand of vehicle.Due to the regulating action of power coupling mechanism, match selection can be optimized to the rotating speed of driving engine under each different speed of a motor vehicle, improve the fuel economy of vehicle.
In addition, the present invention can also realize three static stalls, when motor cannot normally work, can use as third gear four-degree-of-freedom change speed gear box.First clutch is combined with the first drg, second brake simultaneously, realizes fixed gear one grade; First clutch, second clutch are combined with second brake simultaneously, realize fixed gear second gear; First clutch, second clutch are combined with the first drg simultaneously, realize fixed gear third gear.Fixed gear pattern can as the alternative scheme of vehicle under emergency work condition, also may be used for driven to travel, by the switching of control policy to combination drive pattern and fixed gear pattern, improve the efficiency of driving system further, obtain higher fuel economy.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of hybrid transmissions for implementing the present invention program.
Fig. 2 is EVT1 mode power flow diagram.
Fig. 3 is EVT2 mode power flow diagram.
Fig. 4 is EVT3 mode power flow diagram.
Fig. 5 is the rotation speed relation figure implementing the present invention program.
Detailed description of the invention
Figure 1 shows that a kind of electromechanical compound gearing representative embodiments for embodiment the solution of the present invention.This electromechanical compound gearing 60 is made up of three planet rows, two drgs and two power-transfer clutchs, two motor/generators, and wherein first planet row and third planet row are double star planet row, that is, namely have inside and outside two planetary wheels be meshed respectively.The rotor 82 of the first motor/generator 80 is connected with the sun wheel 29 of first planet row of electromechanical compound gearing electromechanical compound gearing 60, be connected by the gear ring 31 of first clutch 12 and electromechanical compound gearing electromechanical compound gearing 60 second planet rows, and brake by the first drg 13.The pinion carrier 33 of gear ring 28 and electromechanical compound gearing electromechanical compound gearing second planet row of electromechanical compound gearing electromechanical compound gearing first planet row is connected and is connected with the sun wheel 36 that electromechanical compound gearing third planet is arranged.The sun wheel 32 of electromechanical compound gearing second planet row is connected with the rotor 92 of the second motor/generator 90, and is connected by the pinion carrier 34 that second clutch 14 and electromechanical compound gearing third planet are arranged and also can be braked by Z second brake 15.The gear ring 35 of electromechanical compound gearing the 3rd planet row is connected with power take-off shaft 37.
Figure 2 shows that the poower flow of straight variable part during this device employing EVT1 pattern.Now the first drg 13 is braked with second brake 15, and first clutch 12 and second clutch 14 disconnect.The pinion carrier 27 that engine power is arranged by electromechanical compound gearing first planet inputs, and the sun wheel 29 of being arranged by electromechanical compound gearing first planet respectively and gear ring 28 export.The power that the sun wheel 29 of being arranged by first planet exports flows into the first motor/generator 80, and now the first motor/generator 80 serves as electrical power generators, and provides electric energy to the second motor/generator 90.The gear ring 28 of another route electromechanical compound gearing first planet row exports, and through electromechanical compound gearing second planet row and third planet row, is exported by power take-off shaft 37.Meanwhile the second motor/generator 90 serves as output power of motor.This power enters electromechanical compound gearing third planet row through the sun wheel 32 of electromechanical compound gearing second planet row and pinion carrier 33, is finally exported by power take-off shaft 37.Under this pattern, vehicle can export larger torque, meets the demand of climbing large slope.
Figure 3 shows that the poower flow of straight variable part during this device employing EVT3 pattern.Now the first drg 13 is separated with second clutch 14, and first clutch 12 is combined with second brake 15.The pinion carrier 27 that engine power is arranged by electromechanical compound gearing first planet inputs, and the gear ring 28 arranged by electromechanical compound gearing first planet exports.This road power is at electromechanical compound gearing second planet row punishment stream.One tunnel enters electromechanical compound gearing third planet row and is finally exported by power take-off shaft 37.Another road power flows into the pinion carrier 33 of electromechanical compound gearing second planet row, and now this power is divided into two parts.A part of power sent through gear ring 31 and first motor/generator 80 of electromechanical compound gearing second planet row together flows into the sun wheel 29 of first planet row.Power is inputted the second motor/generator 90 through the sun wheel 32 of electromechanical compound gearing second planet row by another part, and now it provides electric energy as electrical generator and for the first motor/generator 80.This pattern be applicable to vehicle in the low speed of a motor vehicle travel.
Figure 4 shows that the poower flow of straight variable part during this device employing EVT2 pattern.Now the first drg 13 is separated with second brake 15, and first clutch 12 is combined with second clutch 14.The pinion carrier 27 that engine power is arranged by electromechanical compound gearing first planet inputs, and the gear ring 28 arranged by electromechanical compound gearing first planet exports.This road power is at electromechanical compound gearing second planet row punishment stream.One tunnel enters electromechanical compound gearing third planet row and is finally exported by power take-off shaft 37.Another road power flows into the pinion carrier 33 of electromechanical compound gearing second planet row, and now this power is divided into two parts.A part flows into electromechanical compound gearing first planet row through the gear ring 31 of electromechanical compound gearing second planet row and the sun wheel 29 of electromechanical compound gearing first planet row.Another part converges through the power that sun wheel 32 and second motor/generator 90 of electromechanical compound gearing second planet row provides and enters electromechanical compound gearing third planet through second clutch 14 and arrange, and is finally exported by power take-off shaft 37.Simultaneously the first motor/generator 80 absorbs the power generation flowing through electromechanical compound gearing first planet row sun wheel 29 as electrical generator, and provides electric energy for the second motor/generator 90.This pattern is applicable to vehicle and travels in the middle high speed of a motor vehicle and maximum speed.
Figure 5 shows that the speed diagram of input link, output link and two motors when implementing the present invention program.
Certainly; the above is only one embodiment of the present invention; should be understood that those skilled in the art; under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications all belong within the protection domain of the claims in the present invention.
Claims (5)
1. a double star row three-mode electromechanical compound gearing, is made up of three planet rows, four operating elements and two motor/generators, it is characterized in that: wherein first planet row and third planet row are double star planet row; This double star row three-mode electromechanical compound gearing realizes three different mode of operations by the cooperating of four operating elements, and can realize switching without fast differential force between adjacent two patterns, output speed is continuously linear output under three mode of operations; In addition, this double star row three-mode electromechanical compound gearing also has three static stalls;
Input power is delivered to the pinion carrier of first planet row through idle pulley straight gear; The gear ring of first planet row is connected with the sun wheel that third planet is arranged with the pinion carrier of the second planet row; The sun wheel of first planet row is connected with the first motor/generator rotor, and is connected by the gear ring of first clutch with the second planet row;
The gear ring of the second planet row is also connected with the first drg except the sun wheel of being arranged by first clutch and first planet is connected with the first motor/generator rotor; The sun wheel of the second planet row is connected with the second motor/generator rotor, and is connected by the pinion carrier that second clutch and third planet are arranged;
The pinion carrier of third planet row is also connected with second brake except the sun wheel by second clutch and the second planet row is connected with the second motor/generator rotor; The gear ring of third planet row is connected with the output shaft that this double star arranges three-mode electromechanical compound gearing.
2. double star row three-mode electromechanical compound gearing according to claim 1, is characterized in that: the first motor/generator, the second motor/generator are connected with controller by wire, and controller is connected with closed-center system by wire.
3. double star according to claim 2 row three-mode electromechanical compound gearing, is characterized in that: closed-center system is chemical storage batteries, or super capacitor or flying wheel battery.
4. double star row three-mode electromechanical compound gearing according to claim 1, it is characterized in that: the first drg and second brake are wet multi-disk brake, first clutch and second clutch are multi-disc wet clutch.
5. double star row three-mode electromechanical compound gearing according to claim 1, is characterized in that: the first described motor/generator, the second motor/generator are permagnetic synchronous motor, and rotor is hollow shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410039982.5A CN103802652B (en) | 2014-01-26 | 2014-01-26 | Double-star-planet-gear three-mode electromechanical composite transmission device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410039982.5A CN103802652B (en) | 2014-01-26 | 2014-01-26 | Double-star-planet-gear three-mode electromechanical composite transmission device |
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| Publication Number | Publication Date |
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| CN103802652A CN103802652A (en) | 2014-05-21 |
| CN103802652B true CN103802652B (en) | 2015-07-08 |
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| CN201410039982.5A Expired - Fee Related CN103802652B (en) | 2014-01-26 | 2014-01-26 | Double-star-planet-gear three-mode electromechanical composite transmission device |
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| CN106183784B (en) * | 2016-08-30 | 2018-06-05 | 山东科技大学 | A kind of oil electric mixed dynamic automatic transmission and its method of work |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5168946A (en) * | 1991-09-09 | 1992-12-08 | General Electric Company | Track-laying vehicle electric drive system |
| CN102229319A (en) * | 2011-04-26 | 2011-11-02 | 中国北方车辆研究所 | Electromechanical compound transmission device of tracked vehicle |
| CN102514477A (en) * | 2011-12-27 | 2012-06-27 | 东北大学 | Planet coupled hybrid system for caterpillar and control method for same |
| CN103465777A (en) * | 2013-07-22 | 2013-12-25 | 北京理工大学 | Double-differential electromechanical compound transmission device for crawler vehicle |
-
2014
- 2014-01-26 CN CN201410039982.5A patent/CN103802652B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5168946A (en) * | 1991-09-09 | 1992-12-08 | General Electric Company | Track-laying vehicle electric drive system |
| CN102229319A (en) * | 2011-04-26 | 2011-11-02 | 中国北方车辆研究所 | Electromechanical compound transmission device of tracked vehicle |
| CN102514477A (en) * | 2011-12-27 | 2012-06-27 | 东北大学 | Planet coupled hybrid system for caterpillar and control method for same |
| CN103465777A (en) * | 2013-07-22 | 2013-12-25 | 北京理工大学 | Double-differential electromechanical compound transmission device for crawler vehicle |
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