CN102343796A - Hybrid driving system and vehicle including same - Google Patents

Hybrid driving system and vehicle including same Download PDF

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Publication number
CN102343796A
CN102343796A CN2010102451727A CN201010245172A CN102343796A CN 102343796 A CN102343796 A CN 102343796A CN 2010102451727 A CN2010102451727 A CN 2010102451727A CN 201010245172 A CN201010245172 A CN 201010245172A CN 102343796 A CN102343796 A CN 102343796A
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CN
China
Prior art keywords
transmission device
rotating element
pinion carrier
drg
motor
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Granted
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CN2010102451727A
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Chinese (zh)
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CN102343796B (en
Inventor
谢世滨
阮鸥
翟震
蓝晓东
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BYD Co Ltd
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BYD Co Ltd
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Priority to CN2010102451727A priority Critical patent/CN102343796B/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H3/00Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/72Toothed 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
    • F16H3/724Toothed 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 using external powered electric machines
    • F16H3/725Toothed 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 using external powered electric machines with means to change ratio in the mechanical gearing

Abstract

The invention relates to a hybrid driving system, which comprises an internal-combustion engine, a first motor, a second motor, a power output shaft used for outputting power, a first brake, a second brake, a first transmission mechanism, and a second transmission mechanism. Two connected transmission mechanisms and brakes are arranged in the hybrid driving system. When the two brakes respectively brake, the two transmission mechanisms are in two different connection modes, namely two different transmission ratios (tap positions) are formed, therefore various working modes and corresponding tap positions can be selected according to different driving conditions of a vehicle, and driving requirements of the vehicle under different working conditions can be met further. Besides, by the adoption of the hybrid driving system provided by the invention, the low-speed torsion of the whole vehicle can be increased and the starting is quickened, moreover, the highest efficiency of the internal-combustion engine can be exerted under a high-speed condition, thereby promoting energy conversion efficiency, reducing tail gas emission and energy loss, and finally achieving the effects of low emission, low fuel consumption and high kinetic energy of the whole vehicle.

Description

A kind of hybrid electric drive system and comprise the vehicle of this drive system
Technical field
The present invention relates to a kind of hybrid electric drive system and comprise the vehicle of this drive system.
Background technology
World today's face of mankind energy shortage and ecological deterioration two is challenged greatly, and orthodox car receives the serious puzzlement of oil crises day by day, and energy-conserving and environment-protective become the development topic of auto trade gradually.Given this, the appealing of releasing pure electric automobile grows to even greater heights, but receives the restriction of many factors such as technology, policy, and current pure electric automobile also can't be realized volume production, introducing to the market comprehensively.
Hybrid vehicle was undoubtedly before pure electric automobile is realized industrialization, the most one of Xian Shi technology owing to its outstanding representation aspect energy-conservation and environmental protection.
Prior art discloses a kind of automobile hybrid power drive system; As shown in Figure 5; This drive system comprises combustion engine 100, electrical motor 200 and as the transmission device of power coupling mechanism; This transmission device comprises gear ring 400, planetary pinion carrier 500 and sun wheel 600 is installed; Wherein, Electrical motor 200 is given gear ring 400 through gear 300 with transmission of power; Combustion engine 100 is given sun wheel 600 with transmission of power, then the two power is coupled through pinion carrier and is transferred to the running device of automobile.
Known ground, the combustion engine of automobile or the rotating speed of electrical motor are higher, are delivered to before the drive wheel of automobile by the rotation of combustion engine or electrical motor output, must slow down increase through speed reduction gearing and turn round to drive automobile, and this is same like this on hybrid vehicle.Speed reduction gearing mainly is made up of reduction gear train, and its reduction ratio is changeless after the reducing gearbox manufacturing is accomplished.Car deceleration increases the needs of turning round under the different operating modes in order to adapt to; Orthodox car drive system (promptly only by internal combustion engine drive) is equipped with change speed gear box to carry out the gear position operation of automobile; But; For hybrid vehicle; Because the arrangement form of its actuating unit (being combustion engine and motor) and the restriction of power coupling mechanism; Change speed gear box is installed is not only made driving system structure too complicated, and on mounting structure, also be difficult to realize.Therefore, the main rotating through the control motor of reversing gear of hybrid vehicle realizes that speed change then mainly realizes that through the rotating speed of adjustment electrical motor this is equivalent to a kind of stepless change.
But; This gear shift mode of hybrid vehicle can not adapt to the needs under the different operating modes of automobile; For example; For above-mentioned hybrid electric drive system; When automobile is in climbing (supposing that the gradient is fully loaded following the limiting gradient that can travel of this automobile) situation following time; Output torque after need making internal combustion engine 100 and motor 200 be coupled reaches maximum; This moment, the output torque of motor 200 should reach maximum in this case; But this output speed must pass through reducing gear slow down could the driving automobile climbing to increase moment of torsion (when especially fully loaded the and quality of automobile is big), for the speed reducing ratio that adapts to this kind operating mode reducing gear must design greatlyyer.But; If the reduction ratio that is used as this hybrid electric drive system speed reduction gearing with this bigger reduction ratio but can not adapt to the needs of this other operating mode of automobile; For example; Unloaded and when travelling on flat road surface when this automobile; Require this moment the automobile can be to exercise than higher speed; Yet because the reduction ratio of speed reduction gearing has designed greatlyyer; Even the rotating speed after this moment, electrical motor 200 was coupled with combustion engine 100 reaches maximum; But through the deceleration of the bigger reduction ratio of speed reduction gearing, the moving velocity of automobile is still not ideal enough.
Can be known that by last analysis the gear shift mode of traditional automobile hybrid power drive system can not satisfy the needs that travel under the different operating modes of automobile, this is a more insoluble problem on the automobile hybrid power Design of Driving System always.
Summary of the invention
The present invention provides a kind of vehicle that can satisfy the hybrid electric drive system of the needs that travel under the different operating modes of automobile and comprise this drive system for solving the technical matters that the gear shift mode that has hybrid electric drive system now can not satisfy the needs that travel under the different operating modes of automobile.
One aspect of the present invention provides a kind of hybrid electric drive system; Comprise combustion engine; First motor; Second motor and the power take-off shaft that is used for outputting power; Wherein, Said hybrid electric drive system also comprises first drg; Second drg; First transmission device and second transmission device; Said combustion engine; First motor; First transmission device; Second transmission device is connected with second motor successively; Said first transmission device and second transmission device include first rotating element that can cooperate transmission; Second rotating element and the 3rd rotating element; The center of turn of first rotating element of said first transmission device and first rotating element of second transmission device; The center of turn of one in second rotating element and the 3rd rotating element is captiveed joint; Second rotating element of said first transmission device and first rotating element of second transmission device; In second rotating element and the 3rd rotating element in addition one among boths' center of turn captive joint; The center of turn of the 3rd rotating element of said first transmission device is connected with said first motor; First rotating element of said second transmission device; The third party's in second rotating element and the 3rd rotating element center of turn all is connected with said power take-off shaft with said second motor; First rotating element of said first transmission device also is connected with said first drg, and second rotating element of said first transmission device also is connected with said second drg.
Further, said first transmission device and second transmission device are sun and planet gear.
Further; First rotating element of said first transmission device; Second rotating element and the 3rd rotating element are respectively pinion carrier; Sun wheel and gear ring; First rotating element of said second transmission device; Second rotating element and the 3rd rotating element are respectively pinion carrier; Sun wheel and gear ring; The pinion carrier of said first transmission device is captiveed joint with the sun wheel of said second transmission device; The sun wheel of said first transmission device is captiveed joint with the pinion carrier of said second transmission device; The gear ring of said first transmission device is connected with first motor; The gear ring of said second transmission device is connected with said power take-off shaft; The pinion carrier of said first transmission device also is connected with said first drg, and the sun wheel of said first transmission device also is connected with said second drg through the pinion carrier of said second transmission device.
First rotating element of said first transmission device; Second rotating element and the 3rd rotating element are respectively gear ring; Sun wheel and pinion carrier; First rotating element of said second transmission device; Second rotating element and the 3rd rotating element are respectively gear ring; Sun wheel and pinion carrier; The gear ring of said first transmission device is captiveed joint with the sun wheel of second transmission device; The sun wheel of said first transmission device is captiveed joint with the pinion carrier of said second transmission device; The pinion carrier of said first transmission device is connected with said first motor; The gear ring of said second transmission device is connected with said power take-off shaft; The gear ring of said first transmission device also is connected with said first drg, and the sun wheel of said first transmission device also is connected with said second drg through the pinion carrier of said second transmission device.
First rotating element of said first transmission device; Second rotating element and the 3rd rotating element are respectively pinion carrier; Gear ring and sun wheel; First rotating element of said second transmission device; Second rotating element and the 3rd rotating element are respectively pinion carrier; Gear ring and sun wheel; The pinion carrier of said first transmission device is captiveed joint with the sun wheel of said second transmission device; The gear ring of said first transmission device is captiveed joint with the pinion carrier of said second transmission device; The sun wheel of said first transmission device is connected with said first motor; The gear ring of said second transmission device is connected with said power take-off shaft; The pinion carrier of said first transmission device also is connected with said first drg, and the gear ring of said first transmission device is also captiveed joint with said second drg through the pinion carrier of said second transmission device.
First rotating element of said first transmission device; Second rotating element and the 3rd rotating element are respectively pinion carrier; Sun wheel and gear ring; First rotating element of said second transmission device; Second rotating element and the 3rd rotating element are respectively pinion carrier; Sun wheel and gear ring; The pinion carrier of said first transmission device is captiveed joint with the gear ring of said second transmission device; The sun wheel of said first transmission device is captiveed joint with the pinion carrier of said second transmission device; The gear ring of said first transmission device is connected with said first motor; The sun wheel of said second transmission device is connected with said power take-off shaft; The pinion carrier of said first transmission device also is connected with said first drg, and the sun wheel of said first transmission device also is connected with said second drg through the pinion carrier of said second transmission device.
Said hybrid electric drive system also comprises diff, and said diff is connected with said power take-off shaft.
Said hybrid electric drive system also comprises retarder, and said power take-off shaft is connected with said diff through said retarder.
The output shaft of the output shaft of the output shaft of said combustion engine, first motor and second motor is positioned on the same axis.
Said first transmission device and second transmission device are single twin-stage sun and planet gear.
First drg and second drg are oil-immersed multi-disk brake.
The present invention also provides a kind of vehicle on the other hand, and wherein, said vehicle comprises above-mentioned hybrid electric drive system.
Hybrid electric drive system of the present invention and comprise the vehicle of this drive system; Be provided with two continuous transmission devices and drg; When two drgs difference glancing impacts; Two transmission devices have formed two kinds of different connection modes; Two different transmitting ratios (gear) have promptly been formed; And then can select various mode of operations and each respective notch flexibly, so well satisfied the travel needs of vehicle under different operating modes according to the different driving cycles of vehicle.In addition; Hybrid electric drive system with two D Drive levels of the present invention can make that the car load low speed torque increases, starting is faster; And under at a high speed, can give play to the peak efficiency of combustion engine better; Improved energy conversion efficiency; Reduce exhaust emissions and waste of power, finally reached effects such as the anti-emission carburetor of car load, low oil consumption and kinetic energy.
Description of drawings
Fig. 1 is the scheme drawing of first kind of embodiment of the hybrid electric drive system that provides of the embodiment of the invention;
Fig. 2 is the scheme drawing of second kind of embodiment of the hybrid electric drive system that provides of the embodiment of the invention;
Fig. 3 is the scheme drawing of the third embodiment of the hybrid electric drive system that provides of the embodiment of the invention;
Fig. 4 is the scheme drawing of the 4th kind of embodiment of the hybrid electric drive system that provides of the embodiment of the invention;
Fig. 5 is the scheme drawing of the automobile hybrid power drive system that provides of prior art.
The specific embodiment
Clearer for technical matters, technical scheme and beneficial effect that the present invention is solved, below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
According to one embodiment of the present invention; Shown in Fig. 1-4; One aspect of the present invention provides a kind of hybrid electric drive system; Comprise combustion engine 1; First motor 3; Second motor 10 and the power take-off shaft that is used for outputting power; Wherein, This hybrid electric drive system also comprises first drg 2; Second drg 4; First transmission device and second transmission device; Combustion engine 1; First motor 3; First transmission device; Second transmission device is connected with second motor 10 successively; First transmission device and second transmission device include first rotating element that can cooperate transmission; Second rotating element and the 3rd rotating element; First rotating element 8 of the center of turn of first rotating element 5 of first transmission device and second transmission device; The center of turn of one in second rotating element 9 and the 3rd rotating element 12 is captiveed joint; First rotating element 8 of the center of turn of second rotating element 6 of first transmission device and second transmission device; In second rotating element 9 and the 3rd rotating element 12 in addition one among boths' center of turn captive joint; The center of turn of the 3rd rotating element 7 of first transmission device is connected with first motor 3; First rotating element 8 of second transmission device; The third party's in second rotating element 9 and the 3rd rotating element 12 center of turn all is connected with power take-off shaft with second motor 10; First rotating element 5 of first transmission device also is connected with first drg 2, and second rotating element 6 of first transmission device also is connected with second drg 4.
Further, first transmission device and second transmission device are sun and planet gear.Those skilled in the art can also be designed to triple axle power input/output unit with two transmission devices as required.
Further, this hybrid electric drive system also comprises diff 11, and diff 11 is connected with power take-off shaft.
Further, this hybrid electric drive system also comprises retarder 13, and power take-off shaft is connected with diff 11 through retarder 13.
Power take-off shaft is used for the power of combustion engine 1 (with first motor 3) and the power of second motor 10 are flowed to diff 11, power take-off shaft can for independently the axle; Also can be the output shaft of second motor 10, those skilled in the art are choose reasonable as required.
Combustion engine 1 can be other fuel combustions such as spark ignition engine, diesel engine or methyl alcohol, ethanol or the like.Combustion engine 1 is connected with the rotor of first motor 3, thereby the power of the power of combustion engine 1 and first motor 3 can be exported together, and perhaps the transmission of power of combustion engine 1 gives first motor 3 to produce electric energy.
Specifically, be under the situation of braking mode at first drg 2 or second drg 4, when combustion engine 1 work, the power of combustion engine 1 can be delivered to power take-off shaft through first transmission device and second transmission device.Because combustion engine 1 links to each other with the rotor of first motor 3, therefore when combustion engine 1 work, the rotor of first motor 3 all will be under the drive of combustion engine 1 and turn round, and when first motor 3 is worked, equally also will drive combustion engine 1 and turn round.
First motor 3 can be AC alternating current dynamo, switched reluctance machines, direct current permanent magnet motor or the like.First motor 3 both can generator mode work, also can electric motor mode work.When working with generator mode, first motor 3 is used for mechanical energy is converted into electric energy.When working with electric motor mode, first motor 3 is used for electric energy is converted into mechanical energy.Specifically, when combustion engine 1 work, when combustion engine 1 drive first motor 3 was worked with generator mode, first motor 3 was converted into electric energy with the mechanical energy of combustion engine 1.When first motor 3 is worked with electric motor mode; Electric energy is converted into mechanical energy; And export combustion engine 1 to; Thereby drive the output shaft rotation (no matter first drg 2 or second drg 4 whether brake) of combustion engine 1, perhaps export power take-off shaft (when first drg 2 or second drg, 4 glancing impacts) to.
Owing to have said structure; Thereby first motor 3 can be as the starter motor of combustion engine 1; Thereby need not extra starter motor to be set for combustion engine 1; First motor 3 can also be to the power take-off shaft outputting power simultaneously; Thereby; Satisfying under the situation of power demand, saving the part installing space.In addition; When needs vehicle reverse gear, 10 counter-rotatings of second motor can be realized, thereby need not to be provided with extra gear reversing device; Thereby further saved the installing space that gear reversing device is installed, made hybrid electric drive system provided by the present invention have comparatively compact integral structure.
Second motor 10 can be AC alternating current dynamo, switched reluctance machines, direct current permanent magnet motor or the like.Second motor 10 both can generator mode work, also can electric motor mode work.When working with generator mode, second motor 10 is used for mechanical energy is converted into electric energy.When working with electric motor mode, second motor 10 is used for electric energy is converted into mechanical energy.Specifically, when the mechanical energy of being come by diff 11 transmission is passed to second motor 10 (as when descending or brake process the time), second motor 10 is with generator mode work, thereby the mechanical energy that diff 11 is sent is converted into electric energy.When second motor 10 is worked with electric motor mode, electric energy is converted into mechanical energy, and exports diff 11 to.Generally, vehicle drives through second motor 10.
The output shaft (rotor shaft) of the output shaft of the output shaft of combustion engine 1, first motor 3 (rotor shaft) and second motor 10 is on the same axis, thereby can simplify the mounting structure of drive system, helps conserve space.
Hybrid electric drive system of the present invention also comprises the closed-center system (not shown), and this closed-center system is electrically connected with first motor 3 and second motor 10 respectively.This closed-center system is used for electrical power storage that first motor 3 and second motor 10 are produced as electrical generator the time, so that in needs, again to first motor 3 and/or 10 power supplies of second motor.This closed-center system is the electric energy unit that can repeatedly discharge and recharge, like lithium rechargeable battery etc.
Further, this closed-center system can also be connected with the electric energy power input device, promptly charges to closed-center system through the electric energy power input device, thereby constitutes " plug-in type " hybrid electric drive system.
Generally speaking, can there be vibration in the power of combustion engine 1 output, in order to reduce this vibration, on the output shaft of combustion engine 1, can be provided with dampings such as torsion vibration absorber.According to one embodiment of the present invention, further, this hybrid electric drive system also comprises the double mass flywheel (not shown), and combustion engine 1 is connected with first motor 3 through double mass flywheel.
Double mass flywheel is divided into two parts with an original flywheel exactly, and a part is retained on the position of original combustion engine one side, plays the effect of original flywheel, is used to start and transmit the driving torque of combustion engine, and this part is called elementary quality.Another part then is placed on transmission system gear shift device one side, the rotor inertia that is used to improve change-speed box, and this part is called secondary mass.A ring-like oil pocket is arranged between two parts flywheel, jounce bumper is housed in the chamber, connect two parts flywheel as a whole by jounce bumper.Because secondary mass can improve the moment of inertia of transmission system under the prerequisite of the moment of inertia that does not increase flywheel, make resonance speed drop to below the idling speed.
Double mass flywheel is the best device of vibration isolation and damping effect on the current automobile; Therefore this double mass flywheel is provided with the vibration isolation and damping that can realize between the combustion engine 1 and first motor 3; Help reducing the adverse effect of 1 pair first motor 3 of combustion engine, thereby improved the real work performance of first motor 3.
Retarder 13 can adopt various suitable speed reduction gearings, and as being primary gear speed reducing device, secondary gear reducer etc., those skilled in the art can make choose reasonable as required.
Diff 11 is the main parts that drive sedan-chair; The effect of diff is exactly in the semiaxis transferring power of both sides; Allow the both sides semiaxis to rotate, satisfy two sidecar wheels and do equidistantly not travel with the form of pure rolling as far as possible, reduce tire and ground-surface friction with different rotating speed.Open differential is made up of parts such as satellite gear, planetary wheel carrier (differential gear box), axle side gears.Power gets into diff, and the direct drive planetary wheel carrier drives left and right two semiaxis by satellite gear again, respectively the driving left and right wheel.
First drg 2 and second drg 4 can be selected various suitable brake types, as long as can brake the rotating element of transmission device.For the better braking effect that reaches, satisfy the heat radiation and the life requirements of drg, preferably, first drg 2 and second drg 4 are oil-immersed multi-disk brake.
First drg 2 and second drg 4 are similar with the structure of car brake commonly used with principle.Be connected with the gear ring of first transmission device like first drg 2; First drg 2 can be on the partial-length of the outer peripheral face of gear ring, brake shoe brake cheek or slipper to be set; And handle this brake shoe brake cheek or slipper through fluid pressure type brake operating mechanism (not shown); Optionally engaging or to separate, thereby make gear ring fix or can freely rotate with the outer peripheral face of gear ring.
Known ground, sun and planet gear comprises gear ring, the pinion carrier and the sun wheel of a plurality of satellite gears is installed, and its matching relationship is known as satellite gear and is engaged between sun wheel and the gear ring.This sun and planet gear is generally simple planetary arrangement.Group number according to satellite gear between sun wheel and the gear ring is different, and sun and planet gear is divided into single-stage planetary gear mechanism and twin-stage sun and planet gear.The single-stage planetary gear mechanism has only one group of satellite gear between sun wheel and gear ring, each satellite gear both meshed with sun wheel, also meshed with gear ring; The twin-stage sun and planet gear has two groups of intermeshing satellite gears between sun wheel and gear ring, wherein one group of satellite gear of outside and gear ring engagement, and the one group of satellite gear and the sun wheel of the inside mesh.
Characteristics according to single-stage planetary gear mechanism and twin-stage sun and planet gear; The input torque of supposing sun wheel is Ts; The required moment of torsion of braking pinion carrier is Th; The output torque of gear ring is Tr; Transmitting ratio between sun wheel and the gear ring is the gear ring number of teeth and the ratio of the number of teeth of sun wheel is K; Then for the single-stage planetary gear mechanism, Th=(K+1) Ts; For the twin-stage sun and planet gear, Th=(K-1) Ts.When the input torque of sun wheel equates, and sun wheel is when transmitting ratio between the gear ring also equates, the required brake torque of twin-stage sun and planet gear is significantly less than the required brake torque of single-stage planetary gear mechanism.So preferably, first transmission device and second transmission device are single twin-stage sun and planet gear.
When first transmission device and second transmission device are single twin-stage sun and planet gear; When especially first drg 2 and second drg 4 are braked the pinion carrier of first transmission device and second transmission device respectively; Because required brake torque is less; So can reduce the volume of first drg 2 and second drg 4; Reduce and the oil pressure of the hydraulic efficiency pressure system of hydraulic pressure is provided for first drg 2 and second drg 4, thereby help improving the safety factor and the service life of first drg 2 and second drg 4.
On the other hand; When guaranteeing that combustion engine 1 provides power combustion engine 1 and wheel turn to consistent; If adopt single single-stage planetary gear mechanism; Then need in retarder 13, increase the one-level idle pulley turns or will exchange about the combustion engine in the internal combustion cabin; Thereby changed the layout in internal combustion cabin; And then cause the radial space of whole drive system to heighten, be unfavorable for the layout of hybrid electric drive system.First transmission device and second transmission device are single twin-stage sun and planet gear; Just can make that turning to of combustion engine 1 and wheel is consistent and need not increase the volume of retarder; Help reducing the volume of whole hybrid electric drive system, make that the structure of whole drive system is compact more, effective.
Hybrid electric drive system of the present invention is through being provided with two continuous transmission devices and having realized two gears through two drgs.
First rotating element 5 of first transmission device can with first rotating element 8, second rotating element 9 and the 3rd rotating element 12 of second transmission device in any one captive joint, second rotating element 6 of first transmission device can with first rotating element 8, second rotating element 9 and the 3rd rotating element 12 of second transmission device in addition any one among both captive joint.In order reasonably to utilize first transmission mechanism and second transmission mechanism to constitute a gearratio jointly; Preferably; In first rotating element 5 of first transmission mechanism and second rotating element 9 of second transmission mechanism and the 3rd rotating element 12 any one fixedlyed connected; In second rotating element 6 of first transmission mechanism and first rotating element 8 of second transmission mechanism and the 3rd rotating element 12 any one fixedlyed connected and is not connected on the same rotating element with first rotating element 5 of first transmission mechanism; The 3rd rotating element 7 of first transmission mechanism is connected with first motor 3, and the rotating element that is not connected with the rotating element of first transmission mechanism in first rotating element 8, second rotating element 9 and the 3rd rotating element 12 of second transmission mechanism is connected with power output shaft.
Captive joint between the rotating element of first transmission device and second transmission device can realize that as passing through welding, riveted joint waits and is fixed together through various suitable manner.If no special instructions, the captive joint between the rotating element of first transmission device and second transmission device is meant the connection of center of turn separately of two rotating elements.
When first drg 2 and second drg 4 glancing impact not, first transmission device and second transmission device be transferring power not all, and at this moment, the power of second motor 10 can not be delivered to combustion engine 1, promptly can instead not drag combustion engine 1.If combustion engine 1 starts, the power of combustion engine 1 can not be delivered to diff 11 yet.At this moment, two drive mechanisms can play the effect of power-transfer clutch.
When the braking of first drg 2 and second drg 4 glancing impact not; First rotating element 5 of first transmission device is with to captive joint the rotating element of second transmission device with it all locked; The power of combustion engine 1 is through the 3rd rotating element 7 inputs of first transmission device; And output to second transmission device through second rotating element 6; Rotating element (not with the first transmission device bonded assembly rotating element) from second transmission device outputs to power take-off shaft again, and then is delivered to wheel through diff.At this moment, first transmission device and second transmission device have been realized a gear (having formed a transmitting ratio K1) of vehicle jointly.At this moment, two transmission devices can play the effect of a shifting gear.
When first drg 2 is not braked and second drg, 4 glancing impacts; All locked in second transmission device with second rotating element 6 of second drg, the 4 bonded assembly rotating elements and first transmission device; The power of combustion engine is through the 3rd rotating element 7 inputs of first transmission device; And output to second transmission device through first rotating element 5; Rotating element (not with the first transmission device bonded assembly rotating element) from second transmission device outputs to power take-off shaft again, and then is delivered to wheel through diff.At this moment, first transmission device and second transmission device have been realized another gear (having formed another transmitting ratio K2) of vehicle jointly.At this moment, two transmission devices can play the effect of another shifting gear.
The present invention just can make two transmission devices play the effect of power-transfer clutch or shifting gear through the brake operating to two drgs, thereby need not to be provided with in addition power-transfer clutch through two transmission devices and two drgs are set.Promptly use the vehicle of this hybrid electric drive system and can cancel structures such as pedal of clutch and gear handle, and then simplified the integral structure of vehicle.The cancellation pedal of clutch can alleviate the driving fatigue of chaufeur, the injury that pedal of clutch possibly cause chaufeur when avoiding car accident; Simultaneously, can simplify vehicle structure greatly, reduce the vehicle cost.Cancellation gear handle can adopt two drg brakings of ride control such as button, is about to traditional manual shift and converts the button gearshift into, helps alleviating the gearshift fatigue of chaufeur; The cancellation of gear handle simultaneously can also make interior space openr, helps improving the traveling comfort of vehicle ride.
It should be noted that being connected between drg and the rotating element can be direct connection, also can be indirect connection, and first drg 2 and second drg 4 can be respectively and two rotating element direct connections of first transmission device (or second transmission device); Also can be that first drg 2 is connected with a rotating element (first rotating element) of first transmission device; Second drg 4 is connected with a rotating element of second transmission device; At this moment; The rotating element of this second transmission device is captiveed joint with a rotating element (second rotating element) of first transmission device, and promptly this moment, second drg 4 was connected with second rotating element of first transmission device indirectly.Those skilled in the art can rationally be provided with two drgs as required.
Below, specify the annexation of first transmission device and second transmission device and the annexation between first drg, second drg and each rotating element in conjunction with embodiment:
As shown in Figure 1; First rotating element 5, second rotating element 6 and the 3rd rotating element 7 of first transmission device are respectively pinion carrier, sun wheel and gear ring, and first rotating element 8, second rotating element 9 and the 3rd rotating element 12 of second transmission device are respectively pinion carrier, sun wheel and gear ring.The pinion carrier of first transmission device is captiveed joint with the sun wheel of second transmission device; The sun wheel of first transmission device is captiveed joint with the pinion carrier of second transmission device; The gear ring of first transmission device is connected with first motor 3, and the gear ring of second transmission device is connected with power take-off shaft.
It should be noted that pinion carrier, sun wheel and gear ring can be respectively each rotating element of transmission device, those skilled in the art can rationally set as required; Simultaneously first rotating element 8 of first rotating element 5, second rotating element 6 and the 3rd rotating element 7 and second transmission device of first transmission device, second rotating element 9 can be identical respectively with the 3rd rotating element 12; Also can be different; Preferably, first rotating element 8, second rotating element 9 of first rotating element 5, second rotating element 6 and the 3rd rotating element 7 and second transmission device of first transmission device are corresponding identical with the 3rd rotating element 12.
First drg 2 and the pinion carrier of first transmission device are connected and are used to control the locking or the release of pinion carrier.
Second drg 4 is connected with the pinion carrier of second transmission device; Because the pinion carrier of second transmission device is captiveed joint with the sun wheel of first transmission device; When second drg, 4 glancing impacts, the sun wheel of the pinion carrier of second transmission device and first transmission device all is braked.Promptly second drg 4 is used to control the locking or the release of the sun wheel of first transmission device.
When the braking of first drg 2 and second drg 4 glancing impact not; The power of combustion engine 1 is through the gear ring input of first transmission device; And be input to the pinion carrier of second transmission device, and then output to diff 11 through the gear ring of second transmission device through sun wheel.
When the braking of second drg 4 and first drg 2 glancing impact not; The power of combustion engine 1 is through the gear ring input of first transmission device; And be input to the sun wheel of second transmission device, and then output to diff 11 through the gear ring of second transmission device through pinion carrier.
As shown in Figure 2; First rotating element 5, second rotating element 6 and the 3rd rotating element 7 of first transmission device are respectively gear ring, sun wheel and pinion carrier, and first rotating element 8, second rotating element 9 and the 3rd rotating element 12 of second transmission device are respectively gear ring, sun wheel and pinion carrier.The gear ring of first transmission device is captiveed joint with the sun wheel of second transmission device, and the sun wheel of first transmission device is captiveed joint with the pinion carrier of second transmission device.The first planetary pinion carrier is connected with first motor 3, and the gear ring of second transmission device is connected with power take-off shaft.
First drg 2 and the gear ring of first transmission device are connected and are used to control the locking or the release of gear ring.
Second drg 4 is connected with the pinion carrier of second transmission device; Because the pinion carrier of second transmission device is captiveed joint with the sun wheel of first transmission device; When second drg, 4 glancing impacts, the sun wheel of the pinion carrier of second transmission device and first transmission device all is braked.Promptly second drg 4 is used to control the locking or the release of the sun wheel of first transmission device.
When the braking of first drg 2 and second drg 4 glancing impact not; The power of combustion engine 1 is through the pinion carrier input of first transmission device; And be input to the pinion carrier of second transmission device, and then output to diff 11 through the gear ring of second transmission device through sun wheel.
When the braking of second drg 4 and first drg 2 glancing impact not; The power of combustion engine 1 is through the pinion carrier input of first transmission device; And be input to the sun wheel of second transmission device, and then output to diff 11 through the gear ring of second transmission device through gear ring.
As shown in Figure 3; First rotating element 5, second rotating element 6 and the 3rd rotating element 7 of first transmission device are respectively pinion carrier, gear ring and sun wheel, and first rotating element 8, second rotating element 9 and the 3rd rotating element 12 of second transmission device are respectively pinion carrier, gear ring and sun wheel.The pinion carrier of first transmission device is captiveed joint with the sun wheel of second transmission device; The gear ring of first transmission device is captiveed joint with the pinion carrier of second transmission device; The sun wheel of first transmission device is connected with first motor, and the gear ring of second transmission device is connected with power take-off shaft.
First drg 2 and the pinion carrier of first transmission device are connected and are used to control the locking or the release of pinion carrier.
Second drg 4 is connected with the pinion carrier of second transmission device; Because the pinion carrier of second transmission device is captiveed joint with the gear ring of first transmission device; When second drg, 4 glancing impacts, the gear ring of the pinion carrier of second transmission device and first transmission device all is braked.Promptly second drg 4 is used to control the locking or the release of the gear ring of first transmission device.
When the braking of first drg 2 and second drg 4 glancing impact not; The power of combustion engine 1 is through the sun wheel input of first transmission device; And be input to the pinion carrier of second transmission device, and then output to diff 11 through the gear ring of second transmission device through gear ring.
When the braking of second drg 4 and first drg 2 glancing impact not; The power of combustion engine 1 is through the sun wheel input of first transmission device; And be input to the sun wheel of second transmission device, and then output to diff 11 through the gear ring of second transmission device through pinion carrier.
More than first transmission device and second transmission device among three embodiment be single twin-stage sun and planet gear.
As shown in Figure 4; First rotating element 5, second rotating element 6 and the 3rd rotating element 7 of first transmission device are respectively pinion carrier, sun wheel and gear ring, and first rotating element 8, second rotating element 9 and the 3rd rotating element 12 of second transmission device are respectively pinion carrier, sun wheel and gear ring.The pinion carrier of first transmission device is captiveed joint with the gear ring of second transmission device; The sun wheel of first transmission device is captiveed joint with the pinion carrier of second transmission device; The gear ring of first transmission device is connected with first motor, and the sun wheel of second transmission device is connected with power take-off shaft.
First drg 2 and the pinion carrier of first transmission device are connected and are used to control the locking or the release of pinion carrier.
Second drg 4 is connected with the pinion carrier of second transmission device; Because the pinion carrier of second transmission device is captiveed joint with the sun wheel of first transmission device; When second drg, 4 glancing impacts, the sun wheel of the pinion carrier of second transmission device and first transmission device all is braked.Promptly second drg 4 is used to control the locking or the release of the sun wheel of first transmission device.
When the braking of first drg 2 and second drg 4 glancing impact not; The power of combustion engine 1 is through the gear ring input of first transmission device; And be input to the pinion carrier of second transmission device, and then output to diff 11 through the sun wheel of second transmission device through sun wheel.
When the braking of second drg 4 and first drg 2 glancing impact not; The power of combustion engine 1 is through the gear ring input of first transmission device; And be input to the gear ring of second transmission device, and then output to diff 11 through the sun wheel of second transmission device through pinion carrier.
First transmission device in this instance and second transmission device are single single-stage planetary gear mechanism.
Art technology person can also be designed to single single-stage planetary gear mechanism and single twin-stage sun and planet gear respectively with first transmission device and second transmission device as required; Perhaps be designed to single twin-stage sun and planet gear and single single-stage planetary gear mechanism respectively, as long as can realize two gears.
Only need two drgs can realize the switching of gear in the hybrid electric drive system of the present invention; Simultaneously; When the equal glancing impact not of two drgs, there is not power transmission relationship between the combustion engine 1 and second motor 10, therefore there is not power-transfer clutch in the whole drive system.
So,,, then to consider half friction problem of dry type clutch, like the service life of dry type clutch, the impact of powershift etc. if employing is dry type clutch for adopting power-transfer clutch to realize the hybrid electric drive system of powershift.
If the liquid clutch that adopts then will be considered following problem: the manufacturing process of liquid clutch is complicated, and cost is higher, and oil pressure leaks easily, needs the oil pump continuous firing or uses energy storage.
In the hybrid electric drive system of the present invention owing to there is not the existence of power-transfer clutch, so just do not have above-mentioned problem yet.And the dredge oil amount of oil-immersed multi-disk brake is less, and oil pump only needs intermittent use to get final product, and the oil-immersed multi-disk brake manufacturing is simple, and cost is lower.So hybrid electric drive system of the present invention is simple and compact for structure, cost is low and be easy to maintenance.
Hybrid electric drive system of the present invention can be operated in common mode of operations such as electric-only mode (it is main that the present invention can drive with second motor 10), series model, paralleling model, parking power generation mode, energy feeding braking pattern as required.The present invention also provides a kind of vehicle on the other hand, and wherein, said vehicle comprises above-mentioned hybrid electric drive system.
Hybrid electric drive system of the present invention only need be braked two drgs respectively just can realize two different gears.When the equal glancing impact not of two drgs, two drive mechanisms can play the effect of power-transfer clutch.Be that hybrid electric drive system of the present invention can need not to be provided with devices such as power-transfer clutch and gear handle, help simplifying vehicle structure, alleviate tare, reduce fuel oil consumption, improve the travelled distance of vehicle; Simultaneously can increase the vehicle inside space, improve the traveling comfort of vehicle ride.
Hybrid electric drive system of the present invention and comprise the vehicle of this drive system; Be provided with two continuous transmission devices and drg; When two drgs difference glancing impacts; Two transmission devices have formed two kinds of different connection modes; Two different transmitting ratios (gear) have promptly been formed; And then can select various mode of operations and each respective notch flexibly, so well satisfied the travel needs of vehicle under different operating modes according to the different driving cycles of vehicle.In addition; Hybrid electric drive system with two D Drive levels of the present invention can make that the car load low speed torque increases, starting is faster; And under at a high speed, can give play to the peak efficiency of combustion engine better; Improved energy conversion efficiency; Reduce exhaust emissions and waste of power, finally reached effects such as the anti-emission carburetor of car load, low oil consumption and kinetic energy.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims (12)

1. hybrid electric drive system; Comprise combustion engine; First motor; Second motor and the power take-off shaft that is used for outputting power; It is characterized in that; Said hybrid electric drive system also comprises first drg; Second drg; First transmission device and second transmission device; Said combustion engine; First motor; First transmission device; Second transmission device is connected with second motor successively; Said first transmission device and second transmission device include first rotating element that can cooperate transmission; Second rotating element and the 3rd rotating element; The center of turn of first rotating element of said first transmission device and first rotating element of second transmission device; The center of turn of one in second rotating element and the 3rd rotating element is captiveed joint; Second rotating element of said first transmission device and first rotating element of second transmission device; In second rotating element and the 3rd rotating element in addition one among boths' center of turn captive joint; The center of turn of the 3rd rotating element of said first transmission device is connected with said first motor; First rotating element of said second transmission device; The third party's in second rotating element and the 3rd rotating element center of turn all is connected with said power take-off shaft with said second motor; First rotating element of said first transmission device also is connected with said first drg, and second rotating element of said first transmission device also is connected with said second drg.
2. hybrid electric drive system as claimed in claim 1 is characterized in that, said first transmission device and second transmission device are sun and planet gear.
3. hybrid electric drive system as claimed in claim 2; It is characterized in that; First rotating element of said first transmission device; Second rotating element and the 3rd rotating element are respectively pinion carrier; Sun wheel and gear ring; First rotating element of said second transmission device; Second rotating element and the 3rd rotating element are respectively pinion carrier; Sun wheel and gear ring; The pinion carrier of said first transmission device is captiveed joint with the sun wheel of said second transmission device; The sun wheel of said first transmission device is captiveed joint with the pinion carrier of said second transmission device; The gear ring of said first transmission device is connected with first motor; The gear ring of said second transmission device is connected with said power take-off shaft; The pinion carrier of said first transmission device also is connected with said first drg, and the sun wheel of said first transmission device also is connected with said second drg through the pinion carrier of said second transmission device.
4. hybrid electric drive system as claimed in claim 2; It is characterized in that; First rotating element of said first transmission device; Second rotating element and the 3rd rotating element are respectively gear ring; Sun wheel and pinion carrier; First rotating element of said second transmission device; Second rotating element and the 3rd rotating element are respectively gear ring; Sun wheel and pinion carrier; The gear ring of said first transmission device is captiveed joint with the sun wheel of second transmission device; The sun wheel of said first transmission device is captiveed joint with the pinion carrier of said second transmission device; The pinion carrier of said first transmission device is connected with said first motor; The gear ring of said second transmission device is connected with said power take-off shaft; The gear ring of said first transmission device also is connected with said first drg, and the sun wheel of said first transmission device also is connected with said second drg through the pinion carrier of said second transmission device.
5. hybrid electric drive system as claimed in claim 2; It is characterized in that; First rotating element of said first transmission device; Second rotating element and the 3rd rotating element are respectively pinion carrier; Gear ring and sun wheel; First rotating element of said second transmission device; Second rotating element and the 3rd rotating element are respectively pinion carrier; Gear ring and sun wheel; The pinion carrier of said first transmission device is captiveed joint with the sun wheel of said second transmission device; The gear ring of said first transmission device is captiveed joint with the pinion carrier of said second transmission device; The sun wheel of said first transmission device is connected with said first motor; The gear ring of said second transmission device is connected with said power take-off shaft; The pinion carrier of said first transmission device also is connected with said first drg, and the gear ring of said first transmission device is also captiveed joint with said second drg through the pinion carrier of said second transmission device.
6. hybrid electric drive system as claimed in claim 2; It is characterized in that; First rotating element of said first transmission device; Second rotating element and the 3rd rotating element are respectively pinion carrier; Sun wheel and gear ring; First rotating element of said second transmission device; Second rotating element and the 3rd rotating element are respectively pinion carrier; Sun wheel and gear ring; The pinion carrier of said first transmission device is captiveed joint with the gear ring of said second transmission device; The sun wheel of said first transmission device is captiveed joint with the pinion carrier of said second transmission device; The gear ring of said first transmission device is connected with said first motor; The sun wheel of said second transmission device is connected with said power take-off shaft; The pinion carrier of said first transmission device also is connected with said first drg, and the sun wheel of said first transmission device also is connected with said second drg through the pinion carrier of said second transmission device.
7. hybrid electric drive system as claimed in claim 1 is characterized in that said hybrid electric drive system also comprises diff, and said diff is connected with said power take-off shaft.
8. hybrid electric drive system as claimed in claim 7 is characterized in that said hybrid electric drive system also comprises retarder, and said power take-off shaft is connected with said diff through said retarder.
9. hybrid electric drive system as claimed in claim 1 is characterized in that, the output shaft of the output shaft of said combustion engine, first motor and the output shaft of second motor are positioned on the same axis.
10. hybrid electric drive system as claimed in claim 2 is characterized in that, said first transmission device and second transmission device are single twin-stage sun and planet gear.
11. hybrid electric drive system as claimed in claim 1 is characterized in that, first drg and second drg are oil-immersed multi-disk brake.
12. a vehicle is characterized in that, said vehicle comprises any described hybrid electric drive system among the claim 1-11.
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