CN101683816A - Hybrid power drive system and drive method thereof - Google Patents
Hybrid power drive system and drive method thereof Download PDFInfo
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- CN101683816A CN101683816A CN200810216648A CN200810216648A CN101683816A CN 101683816 A CN101683816 A CN 101683816A CN 200810216648 A CN200810216648 A CN 200810216648A CN 200810216648 A CN200810216648 A CN 200810216648A CN 101683816 A CN101683816 A CN 101683816A
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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
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Abstract
The invention provides a hybrid power drive system and a drive method thereof. The drive system comprises an engine, a first clutch, a second clutch, a first motor, a second motor, an energy storing device and a decelerating mechanism. The engine is connected with the decelerating mechanism by the first clutch. The energy storing device is electrically connected with the first motor and the secondmotor respectively. The engine is connected with the first motor, and the second motor is connected with the decelerating mechanism by the second clutch. The drive method comprises the step of controlling the drive system to be in the pure electric working condition, series-connection working condition, hybrid working condition, three-power source working condition, engine working condition or brake working condition in accordance with the required power of the drive system and the energy storing state of the energy storing device. The drive system provided by the invention has simple structure, and the drive method gives priority to motor drive and can flexibly control the drive system to be in various working modes so as to meet the requirement of actual running.
Description
Technical field
The present invention relates to a kind of hybrid electric drive system and driving method thereof.
Background technology
At present, because hybrid vehicle shows excellence aspect energy-conserving and environment-protective, therefore become the developing direction of auto trade gradually.A kind of hybrid electric drive system is disclosed among the CN1118387C, as shown in Figure 1, it comprises driving engine 1, with the output shaft 2 bonded assembly electrical generators 3 of driving engine 1, be used to store the electric power that produces by electrical generator 3 battery 4, by battery 4 drive electric motor 5, with the output shaft 2 bonded assembly Poewr transmission mechanisms 11 of driving engine 1 and with electrical motor 5 and Poewr transmission mechanism 11 bonded assembly reducing gear 6, the output of described reducing gear 6 passes to wheel the most at last.
The driving method of above-mentioned drive system is, in the normal vehicle operation process, driving engine 1 drives electrical generator 3, by electrical motor 5 power being imported reducing gear 6, and finally is delivered to wheel.When vehicle is in emergency circumstances, when damaging as electrical motor 5, the output of driving engine 1 is directly through Poewr transmission mechanism 11 input reducing gear 6, and finally is delivered to wheel.
But, in above-mentioned this drive system, on the one hand, be used for the transmission of power of driving engine 1 is arrived Poewr transmission mechanism 11 complex structures of reducing gear 6, not only comprise power-transfer clutch, also comprise torque converter and another reducing gear, therefore cause whole drive system complex structure, this makes troubles not only for the entire arrangement of system, but also makes tare increase.On the other hand, when the power of driving engine 1 can drive electrical motor 5 idle running directly through Poewr transmission mechanism 11 input reducing gear 6 time, and also can drive electrical generator 3 idle running driving engine 1 operation the time, therefore can produce the certain energy loss.In addition, the drive pattern of this drive system is single, and the energy effective utilization rate is low, the power demand of various complex working conditions in the time of can not satisfying the vehicle actual travel.
Summary of the invention
The purpose of this invention is to provide a kind of hybrid electric drive system, this driving system structure is simple, the capacity usage ratio height, and have multiple mode of operation.
Hybrid electric drive system according to the present invention comprises: driving engine, first clutch, second clutch, first motor, second motor, closed-center system and speed reduction gearing, described driving engine links to each other with speed reduction gearing by first clutch, described closed-center system is electrically connected respectively with first motor and second motor, described driving engine links to each other with first motor, and described second motor links to each other with speed reduction gearing by second clutch.
Another object of the present invention provides a kind of driving method of hybrid electric drive system, and this driving method may command drive system has multiple mode of operation.
Driving method according to hybrid electric drive system of the present invention, wherein said drive system comprises: driving engine, first clutch, second clutch, first motor, second motor, closed-center system and speed reduction gearing, described driving engine links to each other with speed reduction gearing by first clutch, described closed-center system is electrically connected respectively with first motor and second motor, described driving engine links to each other with first motor, and described second motor links to each other with speed reduction gearing by second clutch.Described driving method comprises: according to the demand power of described drive system and the energy storage state of closed-center system, control described drive system and be in pure electronic operating mode, series connection operating mode, operating mode in parallel, series-parallel connection operating mode, three propulsion source operating modes, engine operating condition or damped condition.
Hybrid electric drive system provided by the invention is simple in structure, and the driving method of this drive system can come flexible control-driven system to be in multiple mode of operation according to the demand power of drive system and the energy storage situation of closed-center system, simultaneously, when not needing machine operation, can be in released state by control clutch, improve capacity usage ratio; And this method can make hybrid electric drive system bring into play the usefulness of self well, in the power that satisfies the demands, realize utilization to the energy maximal efficiency, avoid driving engine to be in the operating mode of idling or low-speed running, thereby reach the purpose that improves fuel utilization ratio, reduces exhaust emissions, finally realize the anti-emission carburetor of car load, low oil consumption and kinetic energy.Supplementary features of the present invention and the corresponding advantages specific embodiment below partly is elaborated.
Description of drawings
Fig. 1 is the structural representation of disclosed hybrid electric drive system among the CN1118387C;
Fig. 2 is the block schematic of first kind of embodiment of hybrid electric drive system provided by the invention;
Fig. 3 is the principle sketch of preferred implementation of first kind of embodiment of hybrid electric drive system provided by the invention;
The transfer of energy distance base diagram of hybrid electric drive system under pure electronic operating mode that Fig. 4 provides for first kind of embodiment of the present invention;
The transfer of energy distance base diagram of hybrid electric drive system under the series connection operating mode that Fig. 5 provides for first kind of embodiment of the present invention;
The transfer of energy distance base diagram of hybrid electric drive system under operating mode in parallel that Fig. 6 provides for first kind of embodiment of the present invention;
The transfer of energy distance base diagram of hybrid electric drive system under the series-parallel connection operating mode that Fig. 7 provides for first kind of embodiment of the present invention;
The transfer of energy distance base diagram of hybrid electric drive system under three propulsion source operating modes that Fig. 8 provides for first kind of embodiment of the present invention; And
The transfer of energy distance base diagram of hybrid electric drive system under engine operating condition that Fig. 9 provides for first kind of embodiment of the present invention;
The transfer of energy distance base diagram of hybrid electric drive system under damped condition that Figure 10 provides for first kind of embodiment of the present invention;
Figure 11 is the block schematic of second kind of embodiment of hybrid electric drive system provided by the invention;
Figure 12 is the block schematic of the third embodiment of hybrid electric drive system provided by the invention.
The specific embodiment
Below, will be in conjunction with the accompanying drawings, the specific embodiment of the present invention is described in detail.
Embodiment one: as shown in Figure 2, hybrid electric drive system provided by the invention comprises: driving engine 100, first clutch 200, first motor 300, second motor 400, closed-center system 500 and speed reduction gearing 600.Described driving engine 100 links to each other with speed reduction gearing 600 by first clutch 200, described driving engine 100 links to each other with first motor 300, described closed-center system 500 is electrically connected respectively with first motor 300 and second motor 400, described drive system also comprises second clutch 800, described second motor 400 links to each other with speed reduction gearing 600 by second clutch 800.
As shown in Figure 3, as a kind of optimal way of present embodiment, in described hybrid electric drive system, described first clutch 200 has first clutch lid 201, and described driving engine 100 links to each other with first motor 300 by first clutch lid 201.
Wherein, described driving engine 100 can be other engine fuels such as spark ignition engine, diesel engine or methyl alcohol, ethanol or the like.Described driving engine 100 links to each other with speed reduction gearing 600 by first clutch 200, thereby be at first clutch 200 under the situation of engagement state, when driving engine 100 work, the power of driving engine 100 can be delivered to speed reduction gearing 600 by first clutch 200.The first clutch lid 201 of described driving engine 100 by first clutch 200 links to each other with first motor 300, therefore when driving engine 100 work, no matter whether first clutch 200 engages, first motor 300 all drives launched machine 100 and turns round, and when 300 work of first motor, equally also will drive driving engine 100 runnings.
Described first motor 300 can be AC alternating current dynamo, switched reluctance machines, direct current permanent magnet motor or the like.According to electromagnetic induction principle, described first motor 300 both can generator mode work, also can electric motor mode work.When working, be used for mechanical energy is converted into electric energy with generator mode.When working, be used for electric energy is converted into mechanical energy with electric motor mode.Specifically, when driving engine 100 work, driving engine 100 drives first motor 300 with generator mode work, is converted into electric energy with the kinetic energy with driving engine 100 and exports closed-center system 500 to.When closed-center system 500 during to the power supply of first motor 300, first motor 300 exports driving engine 100 with electric motor mode work to electric energy is converted into kinetic energy, promptly drives driving engine 100 work.
Described second motor 400 can be AC alternating current dynamo, switched reluctance machines, direct current permanent magnet motor or the like.According to electromagnetic induction principle, described second motor 400 both can generator mode work, also can electric motor mode work.When working, be used for mechanical energy is converted into electric energy with generator mode.When working, be used for electric energy is converted into mechanical energy with electric motor mode.Specifically, when the kinetic energy that is come by speed reduction gearing 600 transmission was passed to second motor 400 by second clutch 800, second motor 400 was converted into electric energy and exports closed-center system 500 to the kinetic energy with speed reduction gearing 600 with generator mode work.When closed-center system 500 during to the power supply of second motor 400, second motor 400 exports speed reduction gearing 600 electric energy is converted into kinetic energy by second clutch 800 with electric motor mode work.
Described closed-center system 500 is controlled energy storing device, for example can be battery pack, fuel cells or the like.Described speed reduction gearing 600 can be reducing gear, change-speed box or the like, and as known to those skilled in the art, the power that is delivered to speed reduction gearing 600 can finally be delivered to wheel of vehicle by coupler, wheel drive shaft etc., travels with powered vehicle.
Under the preferable case, the hybrid electric drive system that present embodiment provided also comprises switch element 501, described switch element 501 is used to control the break-make that is electrically connected between closed-center system 500 and first motor 300, for example can be placed between the closed-center system 500 and first motor 300.In driving engine 100 work, driving engine 100 drives first motor 300 with generator mode work, make the motor 300 of winning that mechanical energy is converted into electric energy, but this moment closed-center system 500 energy storage abundances, need not under the electrically-charged situation, can disconnect being electrically connected between closed-center systems 500 and first motor 300, do not have load owing to first motor 300 like this by described switch element 501, be in idling conditions, therefore outwards do not export electric energy.This moment is because the kinetic energy of drive first motor 300 idle running is very little, so can ignore.
Under the preferable case, described closed-center system 500 has external charge interface (not shown), can directly use external power supply that described closed-center system 500 is charged by this external charge interface, for example can directly use domestic power supply that it is charged, therefore improve ease of use greatly.
Under the preferable case, the hybrid electric drive system that present embodiment provided also comprises the detecting unit (not shown), described detecting unit is electrically connected with described closed-center system 500, is used to detect the energy storage state of described closed-center system 500, promptly is used to detect the state-of-charge of described closed-center system 500.For example can set as required: the state-of-charge that detects described closed-center system 500 when described detecting unit is represented described closed-center system 500 energy storage abundances greater than 40% the time; The state-of-charge that detects described closed-center system 500 when described detecting unit is less than or equal to 40% but greater than 15% the time, represent that described closed-center system 500 is in the not enough state of energy storage; When the state-of-charge that detects described closed-center system 500 when described detecting unit is less than or equal to 15%, represent that described closed-center system 500 is in energy storage wretched insufficiency state.
Below, the driving method of the hybrid electric drive system that present embodiment is provided is elaborated.
The driving method of the hybrid electric drive system that present embodiment provides mainly comprises: according to the demand power of described drive system and the energy storage state of closed-center system, control described drive system and be in pure electronic operating mode, series connection operating mode, operating mode in parallel, series-parallel connection operating mode, three propulsion source operating modes, engine operating condition or damped condition.
Wherein, 1) pure electronic operating mode
When normal smooth-ride of vehicle and closed-center system 500 energy storage abundance, such as the demand power when drive system be less than or equal to the horsepower output of second motor 400, simultaneously the state-of-charge of closed-center system 500 is controlled described drive system and is in pure electronic operating mode greater than 40% the time.Under pure electronic operating mode, has only second motor 400 as the drive power source vehicle '.
Specifically, at this moment, because closed-center system 500 electric energy abundances, and the electric energy that is transported to second motor 400 by closed-center system 500 is enough to satisfy the requirement of vehicle ' through the kinetic energy of exporting after the Conversion of energy, so this moment, driving engine 100 was not worked.Because first motor 300 links to each other with driving engine 100, therefore first motor 300 also is in off position, and first clutch 200 is in released state simultaneously, and second clutch 800 is in bonding state.And closed-center system 500 is in discharge regime, to power to second motor 400, second motor 400 is with electric motor mode work, being converted into kinetic energy and exporting speed reduction gearing 600 to by the electric energy that closed-center system 500 is carried by second clutch 800, final kinetic energy is transported to wheel 700, thereby powered vehicle is travelled.
Transfer of energy path under the pure electronic operating mode is (wherein arrow points is the transfer of energy direction) as shown in Figure 4, at first electric energy transfers to second motor 400 from closed-center system 500, Conversion of energy through second motor 400, electric energy is converted into kinetic energy, the kinetic energy of second motor, 400 outputs is transferred to speed reduction gearing 600 through second clutch 800 then, and finally transfers to wheel 700.
2) series connection operating mode
When the normal smooth-ride of vehicle but closed-center system 500 when being in the not enough state of energy storage, such as the demand power when described drive system be less than or equal to the horsepower output of second motor 400, simultaneously the state-of-charge of closed-center system 500 is less than or equal to 40% but greater than 15% the time, control described drive system and be in the series connection operating mode.Under the series connection operating mode, has only second motor 400 as the drive power source vehicle '.
Specifically, at this moment, because closed-center system 500 electric energy deficiencies, need charging in time, continue to travel with assurance, so start the engine 100, make driving engine 100 drive first motor 300, be delivered to first motor 300 with kinetic energy, make first motor 300, be converted into electric energy with kinetic energy and export closed-center system 500 to it is charged driving engine 100 with generator mode work with driving engine 100.This moment is owing to be transported to the electric energy of second motor 400 is enough to satisfy vehicle ' through the kinetic energy of exporting after the Conversion of energy requirement by closed-center system 500, first clutch 200 is in released state, control second clutch 800 is in bonding state so can control, so the kinetic energy of driving engine 100 can not be delivered to speed reduction gearing 600.Has only closed-center system 500 this moment to 400 power supplies of second motor, make second motor 400 with electric motor mode work, being converted into kinetic energy and exporting speed reduction gearing 600 to by the electric energy that closed-center system 500 is carried by second clutch 800, final kinetic energy is transported to wheel 700, thereby powered vehicle is travelled.
Transfer of energy path under the series connection operating mode is (wherein arrow points is the transfer of energy direction) as shown in Figure 5, at first the kinetic energy of driving engine 100 generations is passed to closed-center system 500 after first motor 300 is converted into electric energy, electric energy in the closed-center system 500 is converted into kinetic energy after second clutch 800 is passed to speed reduction gearing 600 through second motor 400 then, and finally transfers to wheel 700.
3) operating mode in parallel
When vehicle is in climbing or driving cycle such as acceleration and closed-center system 500 energy storage when sufficient, such as when the demand power of drive system greater than the horsepower output of second motor 400 and be less than or equal to the horsepower output of second motor 400 and the horsepower output sum of driving engine, the state-of-charge of closed-center system 500 is controlled described drive system and is in operating mode in parallel greater than 40% the time simultaneously.Under operating mode in parallel, the driving engine 100 and second motor 400 are simultaneously as the drive power source vehicle '.
Specifically, at this moment, because the kinetic energy of second motor, 400 outputs can't satisfy the vehicle ' requirement, need driving engine 100 to provide power-assisted for it, so start the engine 100, and make first clutch 200 be in engagement state, thereby can be delivered to speed reduction gearing 600 by the kinetic energy that first clutch 200 is exported driving engine 100.Simultaneously, the closed-center system 500 of electric energy abundance is in discharge regime, to power to second motor 400, second motor 400 is with electric motor mode work, control second clutch 800 simultaneously and also be in bonding state, second motor 400 is being converted into kinetic energy and being exported to speed reduction gearing 600 by second clutch by the electric energy that closed-center system 500 is carried.The kinetic energy that is delivered to speed reduction gearing 600 the most all is delivered to wheel 700, travels with powered vehicle.At this moment, because closed-center system 500 electric energy abundances, so need not it is charged, but this moment, driving engine 100 was in running order, and driving engine 100 can drive first motor 300, makes the motor 300 of winning that mechanical energy is converted into electric energy and exports, therefore can disconnect being electrically connected between closed-center systems 500 and first motor 300 by switch element 501 this moment, because first motor 300 does not have load, be in idling conditions like this, therefore can outwards do not export electric energy.The kinetic energy that drives 300 idle running of first motor this moment is very little, can ignore.
Transfer of energy path under the operating mode in parallel is (wherein arrow points is the transfer of energy direction) as shown in Figure 6, and a transfer of energy path is: the kinetic energy that driving engine 100 produces is passed to speed reduction gearing 600 through first clutch 200, and finally transfers to wheel 700; Another transfer of energy path is: the electric energy in the closed-center system 500 is converted into kinetic energy after second clutch 800 is passed to speed reduction gearing 600 by second motor 400, and finally transfers to wheel 700.
4) series-parallel connection operating mode
When vehicle is in climbing or driving cycle such as acceleration but closed-center system 500 when being in the not enough state of energy storage, such as when the demand power of drive system greater than the horsepower output of second motor 400 and be less than or equal to the horsepower output of second motor 400 and the horsepower output sum of driving engine, the state-of-charge of closed-center system 500 is less than or equal to 40% but greater than 15% the time, control described drive system and be in the series-parallel connection operating mode simultaneously.Under the series-parallel connection operating mode, the driving engine 100 and second motor 400 are simultaneously as the drive power source vehicle '.
Specifically, at this moment, on the one hand, because the kinetic energy of second motor, 400 outputs can't satisfy the vehicle ' requirement, need driving engine 100 to provide power-assisted for it, so start the engine 100, and make first clutch 200 be in engagement state, thus can be delivered to speed reduction gearing 600 by the kinetic energy that first clutch 200 is exported driving engine 100.Simultaneously, control second clutch 800 is in bonding state, to 400 power supplies of second motor, second motor 400 is with electric motor mode work, will be converted into kinetic energy by the electric energy that closed-center system 500 is carried and export speed reduction gearing 600 to through second clutch 800 by closed-center system 500.The kinetic energy that is delivered to speed reduction gearing 600 the most all is delivered to wheel 700, travels with powered vehicle.On the other hand, because closed-center system 500 electric energy deficiencies, need charging in time, continue to travel with assurance, so under the in running order situation of driving engine 100, can make driving engine 100 drive first motor 300 by the first clutch lid 201 of first clutch 200, be delivered to first motor 300 with kinetic energy with driving engine 100, first motor 300 is converted into electric energy and exports closed-center system 500 to so that it is charged with the kinetic energy with driving engine 100 with generator mode work at this moment.
Transfer of energy path under the series-parallel connection operating mode is (wherein arrow points is the transfer of energy direction) as shown in Figure 7, article one, the transfer of energy path is: the part kinetic energy that driving engine 100 produces is passed to speed reduction gearing 600 through first clutch 200, and finally transfers to wheel 700; Another transfer of energy path is: another part kinetic energy that driving engine 100 produces is passed to closed-center system 500 after first motor 300 is converted into electric energy; A transfer of energy path is again: the electric energy in the closed-center system 500 is converted into kinetic energy after second clutch 800 is passed to speed reduction gearing 600 through second motor 400, and finally transfers to wheel 700.
5) three propulsion source operating modes
When vehicle is in extremely abominable driving cycle,, controls described drive system and be in three propulsion source operating modes such as when the demand power of drive system during greater than the horsepower output sum of the horsepower output of second motor 400 and driving engine.Under three propulsion source operating modes, driving engine 100, first motor 300 and second motor 400 are simultaneously as the drive power source vehicle '.
Specifically, at this moment, on the one hand, start the engine 100 makes first clutch 200 be in engagement state, by first clutch 200 kinetic energy that driving engine 100 self produces is delivered to speed reduction gearing 600.On the other hand, power to first motor 300 by closed-center system 500, first motor 300 is with electric motor mode work, be converted into kinetic energy and the first clutch lid 201 by first clutch 200 exports driving engine 100 to the electric energy that closed-center system 500 is carried, because this moment, first clutch 200 was in engagement state, therefore can will transmit next transport of kinetic energy to speed reduction gearing 600 by first motor 300 by first clutch 200.Meanwhile, make second clutch 800 be in bonding state, because closed-center system 500 is also to the power supply of second motor 400, second motor 400 is with electric motor mode work, exports speed reduction gearing 600 to will be converted into the kinetic energy second clutch 800 of going forward side by side by the electric energy that closed-center system 500 is carried.The kinetic energy that is delivered to speed reduction gearing 600 the most all is delivered to wheel 700, travels with powered vehicle.
Transfer of energy path under the three propulsion source operating modes is (wherein arrow points is the transfer of energy direction) as shown in Figure 8, article one, the transfer of energy path is: the kinetic energy that driving engine 100 self produces is passed to speed reduction gearing 600 through first clutch 200, and finally transfers to wheel 700; Another transfer of energy path is: the electric energy in the closed-center system 500 is passed to speed reduction gearing 600 through driving engine 100 and first clutch 200 again after first motor 300 is converted into kinetic energy, and finally transfers to wheel 700; A transfer of energy path is again: the electric energy in the closed-center system 500 is converted into kinetic energy after second clutch 800 is passed to speed reduction gearing 600 through second motor 400, and finally transfers to wheel 700.
6) engine operating condition
When closed-center system 500 is in energy storage wretched insufficiency state and vehicle and is in preferably driving cycle, be less than or equal to 15% such as state-of-charge when closed-center system 500, be not enough to drive second motor 400, when the demand power of drive system is less than the horsepower output of driving engine simultaneously, has controlled described drive system and be in engine operating condition.Under engine operating condition, only by driving engine 100 as the drive power source vehicle '.
Specifically, at this moment,, therefore need charging in time, continue to travel guaranteeing because the electric energy of closed-center system 500 wretched insufficiency has been not enough to drive second motor 400.Simultaneously, the kinetic energy that driving engine 100 produces is closed-center system 500 chargings except having more than needed in addition the powered vehicle cruising to drive first motor 300 and second motor 400 simultaneously.So in the case, start the engine 100, and make first clutch 200 be in engagement state, a part of kinetic energy that driving engine 100 produces is delivered to speed reduction gearing 600 by first clutch 200.Simultaneously because under the in running order situation of driving engine 100, driving engine 100 can drive first motor 300 by the first clutch lid 201 of first clutch 200, therefore another part kinetic energy that driving engine 100 produces can be delivered to first motor 300, this moment, first motor 300 was with generator mode work, being converted into electric energy and being exported to closed-center system 500 so that it is charged by the kinetic energy that driving engine 100 transmits.And, control second clutch 800 combinations this moment, the a part of kinetic energy that is delivered to speed reduction gearing 600 finally is delivered to wheel 700 and is travelled with powered vehicle, another part kinetic energy then is passed to second motor 400 by second clutch 800, this moment, second motor 400 was with generator mode work, being converted into electric energy and being exported to closed-center system 500 so that it is charged by the kinetic energy that speed reduction gearing 600 transmission come.When described closed-center system 500 chargings are finished, can disconnect being electrically connected between closed-center systems 500 and first motor 300 by switch element 501, by separate second clutch 800 disconnect speed reduction gearings 600 and second motor 400 be connected, avoid driving engine to continue to drive second motor 400 and rotate and cause unnecessary degradation of energy and waste.
Transfer of energy path under the engine operating condition is (wherein arrow points is the transfer of energy direction) as shown in Figure 9, article one, the transfer of energy path is: the part kinetic energy that driving engine 100 produces is after first clutch 200 is passed to speed reduction gearing 600, and wherein a part finally transfers to wheel 700; Another transfer of energy path is: the part kinetic energy that driving engine 100 produces is after first clutch 200 is passed to speed reduction gearing 600, wherein another part is passed to closed-center system 500 be transferred to second motor 400 through second clutch 800 after second motor 400 is converted into electric energy; A transfer of energy path is again: another part kinetic energy that driving engine 100 produces is passed to closed-center system 500 after first motor 300 is converted into electric energy.
7) damped condition
When vehicle enters braking state, brake pedal is operated, and Das Gaspedal is released, and control second clutch 800 and enter bonding state this moment, from the kinetic energy process speed reduction gearing 600 of wheel 700, drive 400 generatings of second motor with recuperated energy by second clutch 800.By this mode of operation, can be dragged by second motor 400 and be realized vehicle braked.When second motor 400 is dragged generation deficiency with abrupt deceleration vehicle, can also be by engaging the first clutch 200 anti-driving engines 100 that drag with further raising braking potential.Certainly, also can use the drg on the vehicle to realize the vehicle braked operation.
Transfer of energy path under the damped condition is (wherein arrow points is the transfer of energy direction) as shown in figure 10, the transfer of energy path is: the kinetic energy of wheel 700 is transferred to second motor 400 through speed reduction gearing 600, second clutch 800, is passed to closed-center system 500 after second motor 400 is converted into electric energy.
8) external power charging operating mode
Because described closed-center system 500 has the external charge interface, therefore when vehicle stops, can directly use external power supply by this external charge interface, as domestic power supply to as described in closed-center system 500 charge, to improve ease of use.At this moment, driving engine 100, first motor 300 and second motor 400 are not worked, and first clutch 200 is in released state or engagement state.
In addition, need to prove that when car brakeing, the kinetic energy of driving engine 100 can reclaim by first motor 300 and second motor 400, so that first motor 300 and second motor 400 be all with generator mode work, thereby be that closed-center system 500 charges.
Embodiment two: as shown in figure 11, the hybrid electric drive system that present embodiment provides comprises: driving engine 100, first clutch 200, first motor 300, second motor 400, three-clutch 900, closed-center system 500 and speed reduction gearing 600.Wherein said driving engine 100 links to each other with speed reduction gearing 600 by first clutch 200, described closed-center system 500 is electrically connected respectively with first motor 300 and second motor 400, described second motor 400 links to each other with speed reduction gearing 600, and described driving engine 100 links to each other by three-clutch 900 with first motor 300.
To be that the position of described power-transfer clutch is provided with different for present embodiment and the difference of embodiment one as can be seen, and replace as a kind of equivalence of power-transfer clutch among the embodiment two, can use a double-clutch to substitute first clutch 200 and three-clutch 900 in the present embodiment, this belongs to the equivalence replacement that those skilled in the art just can simply make without creative work, does not repeat them here.
Because three-clutch 900 is arranged between the described driving engine 100 and first motor 300, can control the break-make of power between the driving engine 100 and first motor 300, therefore directly be electrically connected between first motor 300 in the present embodiment and the closed-center system 500, switch element 501 is not set, when closed-center system 500 energy storage abundances, need not under the electrically-charged situation, can control three-clutch 900 separates, the energy that combustion cutoff 100 passes to first motor 300, prevent that driving engine 100 from driving that first motor 300 continues rotation and the degradation of energy that causes, what also prevented that closed-center system 500 from causing because of overcharging simultaneously damages closed-center system 500 in-to-ins.
Control method among the driving method of the hybrid electric drive system that present embodiment provides and the embodiment one is basic identical, controls described drive system equally and is in pure electronic operating mode, series connection operating mode, operating mode in parallel, series-parallel connection operating mode, three propulsion source operating modes, engine operating condition or damped condition.Difference be in each operating mode to the control of power-transfer clutch, as follows:
Under the pure electronic operating mode, three-clutch 900 is in released state, and first motor 300 is in off position, and first clutch 200 is in released state simultaneously.And closed-center system 500 is in discharge regime, to power to second motor 400, second motor 400 is with electric motor mode work, being converted into kinetic energy and being exported to speed reduction gearing 600 by the electric energy that closed-center system 500 is carried, final kinetic energy is transported to wheel 700, thereby powered vehicle is travelled; Under the series connection operating mode, control first clutch 200 is in released state, and three-clutch 900 is in bonding state, and driving engine 100 drives 300 generatings of first motor, and closed-center system 500 is powered to second motor 400, thereby drives vehicle '; Under the operating mode in parallel, first clutch 200 is in bonding state, and three-clutch 900 is in released state, has realized that the driving engine 100 and second motor 400 are simultaneously as the drive power source vehicle '; Under the series-parallel connection operating mode, first clutch 200 and three-clutch 900 are in bonding state simultaneously, on the one hand, realize that the driving engine 100 and second motor 400 are simultaneously as the drive power source vehicle ', on the other hand, make driving engine 100 drive 300 generatings of first motor by three-clutch 900, to closed-center system 500 power supplies; Under the three propulsion source operating modes, first clutch 200 and three-clutch 900 all are in bonding state, and first motor 300, driving engine 100 and second motor 400 are simultaneously as the drive power source vehicle '; Under the engine operating condition, first clutch 200 combinations, the power part of driving engine 100 is by speed reduction gearing 600 drive wheels 700, another part then drives 400 generatings of second motor by speed reduction gearing 600, simultaneously, three-clutch 900 is in bonding state, and driving engine part power drives first electrical generator and generates electricity; Damped condition is the same with description among external power charging operating mode and described first embodiment.
Wherein, the transfer of energy route of each operating mode among the transfer of energy route in the various operating modes described in the present embodiment and the embodiment one is identical.
Embodiment three: as shown in figure 12, the hybrid electric drive system that present embodiment provides comprises: driving engine 100, first clutch 200, second clutch 800, first motor 300, second motor 400, three-clutch 900, closed-center system 500 and speed reduction gearing 600.Wherein said driving engine 100 links to each other with speed reduction gearing 600 by first clutch 200, described closed-center system 500 is electrically connected respectively with first motor 300 and second motor 400, described second motor 400 links to each other with speed reduction gearing 600 by second clutch 800, and described driving engine 100 links to each other by three-clutch 900 with first motor 300.
Hybrid electric drive system in the present embodiment comprises first clutch 200, second clutch 800 and three-clutch 900 simultaneously, not only saved switch element 501, when not needing first motor 300 to work on, prevent that driving engine 100 from driving that first motor 300 continues rotation and the degradation of energy that causes, what also prevented that closed-center system 500 from causing because of overcharging simultaneously damages closed-center system 500 in-to-ins.And when not needing the work of second motor 400, can disconnect being connected between second motor 400 and the speed reduction gearing 600 by second clutch 800, and saved energy, improved capacity usage ratio.
The described drive system of the same control of the control method that hybrid electric drive system in the present embodiment provides is in pure electronic operating mode, series connection operating mode, operating mode in parallel, series-parallel connection operating mode, three propulsion source operating modes, engine operating condition or damped condition.Wherein with first embodiment and second embodiment in unique different place be control to power-transfer clutch.
During pure electronic operating mode, control first clutch 200 is in released state, and second clutch 800 is in bonding state.And closed-center system 500 is in discharge regime, to power to second motor 400, second motor 400 is with electric motor mode work, being converted into kinetic energy and exporting speed reduction gearing 600 to by the electric energy that closed-center system 500 is carried by second clutch 800, final kinetic energy is transported to wheel 700, thereby powered vehicle is travelled; During the series connection operating mode, control first clutch 200 is in released state, control second clutch 800 and three-clutch 900 are in bonding state, driving engine 100 drives 300 generatings of first motor, being converted into electric energy with the kinetic energy with driving engine 100 exports closed-center system 500 to it is charged, closed-center system 500 is to 400 power supplies of second motor, make second motor 400 with electric motor mode work, being converted into kinetic energy and exporting speed reduction gearing 600 to by the electric energy that closed-center system 500 is carried by second clutch 800, final kinetic energy is transported to wheel 700, thereby powered vehicle is travelled; During the parallel connection operating mode, system controls three-clutch 900 and is in released state, control first clutch 200 and second clutch 800 are in bonding state, thereby the kinetic energy of driving engine 100 is delivered to speed reduction gearing 600 by first clutch 200, and second motor 400 is being converted into kinetic energy and being exported to speed reduction gearing 600 by second clutch 800 by the electric energy that closed-center system 500 is carried simultaneously.The kinetic energy that is delivered to speed reduction gearing 600 the most all is delivered to wheel 700, travels with powered vehicle; During the series-parallel connection operating mode, control clutch 200,800,900 is in bonding state simultaneously, start on the one hand a part of kinetic energy of 100 to be delivered to speed reduction gearing 600 by first clutch 200, another part kinetic energy of driving engine 100 drives 300 generatings of first motor on the other hand, in closed-center system 500, second motor 400 is being converted into kinetic energy and being exported to speed reduction gearing 600 by second clutch 800 by the electric energy that closed-center system 500 is carried simultaneously with electrical power storage.The kinetic energy that is delivered to speed reduction gearing 600 the most all is delivered to wheel 700, travels with powered vehicle; During three propulsion source operating modes, system controls three power-transfer clutchs 200,800 equally, and 900 is in bonding state simultaneously, realizes driving engine 100, first motor 300 and second motor, 400 while drive wheels; Under the engine operating condition, control three power-transfer clutchs and be in bonding state simultaneously, a part of kinetic energy that driving engine 100 is produced is delivered to first motor 300, this moment, first motor 300 was with generator mode work, being converted into electric energy and being exported to closed-center system 500 so that it is charged by the kinetic energy that driving engine 100 transmits.Another part kinetic energy of driving engine 100 generations simultaneously is delivered to speed reduction gearing 600, the a part of kinetic energy that is delivered to speed reduction gearing 600 finally is delivered to wheel 700 and is travelled with powered vehicle, another part kinetic energy then is passed to second motor 400 by second clutch 800, this moment, second motor 400 was with generator mode work, being converted into electric energy and being exported to closed-center system 500 so that it is charged by the kinetic energy that speed reduction gearing 600 transmission come.During damped condition, 800 combinations of control second clutch will drive 400 generatings of second motor with recuperated energy by second clutch 800 from the kinetic energy process speed reduction gearing 600 of wheel 700; Under external source battery charger condition, when using the external charge mouth that closed-center system is charged, control clutch 200,800 and 900 is in combination or released state.
Transfer of energy path in the above operating mode of present embodiment is identical with the transfer of energy path of corresponding operating mode among the embodiment one, and specifically 4-accompanying drawing 10 does not with reference to the accompanying drawings repeat them here.
The driving method of hybrid electric drive system provided by the invention can be according to the actual travel operating mode of vehicle, control-driven system is in various mode of operations flexibly, and drive system is based on motor-driven, and make engine operation in its maximal efficiency district, not only realize the purpose that energy rationally utilizes, and can realize the purpose of energy-conserving and environment-protective.
Claims (10)
1, a kind of hybrid electric drive system, described drive system comprises: driving engine (100), first clutch (200), first motor (300), second motor (400), closed-center system (500), and speed reduction gearing (600), described driving engine (100) links to each other with speed reduction gearing (600) by first clutch (200), described closed-center system (500) is electrically connected respectively with first motor (300) and second motor (400), described driving engine (100) links to each other with first motor (300), wherein, described hybrid electric drive system also comprises second clutch (800), and described second motor (400) links to each other by second clutch (800) with speed reduction gearing (600).
2, drive system according to claim 1 is characterized in that: described first clutch (200) has first clutch lid (201), and described driving engine (100) links to each other with first motor (300) by first clutch lid (201).
3, a kind of driving method of hybrid electric drive system, wherein said drive system comprises: driving engine (100), first clutch (200), first motor (300), second motor (400), second clutch (800), closed-center system (500), and speed reduction gearing (600), wherein said driving engine (100) links to each other with speed reduction gearing (600) by first clutch (200), described driving engine (100) links to each other with first motor (300), described closed-center system (500) is electrically connected respectively with first motor (300) and second motor (400), described second motor (400) links to each other with speed reduction gearing (600) by second clutch (800), and described driving method comprises:
According to the demand power of described drive system and the energy storage state of closed-center system (500), control described drive system and be in pure electronic operating mode, series connection operating mode, series-parallel connection operating mode, three propulsion source operating modes, engine operating condition or damped condition.
4, driving method according to claim 3, wherein,
When described drive system is in pure electronic operating mode, driving engine (100) and first motor (300) are not worked, first clutch (200) is in released state, second clutch (800) is in bonding state, closed-center system (500) is in discharge regime, power to second motor (400) by closed-center system (500), second motor (400) is passed to speed reduction gearing (600) with electric motor mode work and output kinetic energy through second clutch (800), and second motor this moment (400) is as the drive power source vehicle ';
When described drive system is in the series connection operating mode, driving engine (100) is worked and is driven first motor (300) with generator mode work, thereby closed-center system (500) is charged, first clutch (200) is in released state, second clutch (800) is in bonding state, power to second motor (400) by closed-center system (500), second motor (400) passes through second clutch (800) to speed reduction gearing (600) with electric motor mode work and output kinetic energy, and second motor this moment (400) is as the drive power source vehicle ';
When described drive system is in the series-parallel connection operating mode, driving engine (100) is worked and is driven first motor (300) with generator mode work, thereby closed-center system (500) is charged, first clutch (200) is in engagement state, be passed to speed reduction gearing (600) with kinetic energy with driving engine (100) output, power to second motor (400) by closed-center system (500) simultaneously, second clutch (800) is in bonding state, second motor (400) with electric motor mode work and through second clutch Ei (800) output kinetic energy to speed reduction gearing (600), driving engine (100) and second motor (400) while this moment is as the drive power source vehicle ';
When described drive system is in three propulsion source operating modes, driving engine (100) work, first clutch (200) is in engagement state, be passed to speed reduction gearing (600) with kinetic energy with driving engine (100) output, closed-center system (500) is simultaneously to first motor (300) and second motor (400) power supply, first motor (300) is with electric motor mode work and drive driving engine (100), thereby kinetic energy is passed to speed reduction gearing (600) by first clutch (200), second clutch (800) also is in bonding state simultaneously, second motor (400) is passed to speed reduction gearing (600) with electric motor mode work and output kinetic energy through second clutch (800), at this moment driving engine (100), first motor (300), and second motor (400) simultaneously as the drive power source vehicle ';
When described drive system is in engine operating condition, driving engine (100) work, first clutch (200) all is in engagement state with second clutch (800), be passed to speed reduction gearing (600) with kinetic energy with driving engine (100) output, the a part of kinetic energy that is passed to speed reduction gearing (600) is used for powered vehicle and travels, another part kinetic energy is passed to second motor (400), so that second motor (400) charges with generator mode work and to closed-center system (500), driving engine (100) drives first motor (300) with generator mode work simultaneously, thereby closed-center system (500) is charged, and driving engine this moment (100) is as the drive power source vehicle '; And
When described drive system is in damped condition, second clutch (800) is in bonding state, kinetic energy from wheel (700) drives second motor (400) generating with recuperated energy through speed reduction gearing (600), second clutch (800), thereby closed-center system (500) is charged.
5, driving method according to claim 4, wherein, described drive system also comprises the switch element (501) that is used to control the break-make that is electrically connected between closed-center system (500) and first motor (300), described driving method comprises that also the described drive system of control is in operating mode in parallel, when described drive system is in operating mode in parallel, driving engine (100) work, first clutch (200) is in engagement state with second clutch (800), be passed to speed reduction gearing (600) with kinetic energy with driving engine (100) output, power to second motor (400) by closed-center system (500), second motor (400) is passed to speed reduction gearing (600) with electric motor mode work and output kinetic energy through second clutch (800), disconnect being electrically connected between closed-center system (500) and first motor (300) by described switch element (501), thereby driving engine (100) is though drive first motor (300) work, but first motor (300) is in idling conditions, closed-center system (500) is not charged, closed-center system (500) is in discharge regime, and this moment, driving engine (100) and second motor (400) were simultaneously as the drive power source vehicle '.
6, driving method according to claim 5, wherein, described closed-center system (500) has the external charge interface, described driving method comprises that also the described drive system of control is in the external power charging operating mode, when described drive system is in the external power charging operating mode, vehicle stops, driving engine (100), first motor (300), and second motor (400) do not work, first clutch (200) is in released state with second clutch (800), uses external source to charge as closed-center system (500) by the external charge interface on the described closed-center system (500).
7. driving method according to claim 5, wherein,
When described demand power is less than or equal to the horsepower output of second motor (400), controls described drive system and be in pure electronic operating mode or series connection operating mode;
When described demand power greater than the horsepower output of second motor (400) and be less than or equal to the horsepower output of second motor (400) and during the horsepower output sum of driving engine (100), control described drive system and be in operating mode in parallel or series-parallel connection operating mode; And
When described demand power during, control described drive system and be in three propulsion source operating modes greater than the horsepower output sum of the horsepower output of second motor (400) and driving engine (100).
8, driving method according to claim 7, wherein, when described demand power is less than or equal to the horsepower output of second motor (400), further judge the energy storage state of closed-center system (500):
When closed-center system (500) is in energy storage deficiency state, controls described drive system and be in the series connection operating mode; Otherwise control described drive system and be in pure electronic operating mode;
When described demand power greater than the horsepower output of second motor (400) and be less than or equal to the horsepower output of second motor (400) and during the horsepower output sum of driving engine (100), further judge the energy storage state of closed-center system (500):
When closed-center system (500) is in energy storage deficiency state, controls described drive system and be in the series-parallel connection operating mode; Otherwise control described drive system and be in operating mode in parallel.
9, driving method according to claim 5, wherein, when closed-center system (500) is in energy storage wretched insufficiency state, and described demand power is controlled described drive system and is in engine operating condition during less than the horsepower output of driving engine (100).
10. driving method according to claim 3, wherein, the energy storage state of described closed-center system (500) obtains by the detecting unit that is electrically connected with described closed-center system (500).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104918812A (en) * | 2012-12-19 | 2015-09-16 | 捷豹路虎有限公司 | Hybrid vehicle powertrain |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104918812A (en) * | 2012-12-19 | 2015-09-16 | 捷豹路虎有限公司 | Hybrid vehicle powertrain |
| US9718344B2 (en) | 2012-12-19 | 2017-08-01 | Jaguar Land Rover Limited | Hybrid vehicle powertrain |
| CN104918812B (en) * | 2012-12-19 | 2017-12-29 | 捷豹路虎有限公司 | The PWTN of hybrid vehicle |
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