CN110388436A - Electric vehicles torque-converters - Google Patents
Electric vehicles torque-converters Download PDFInfo
- Publication number
- CN110388436A CN110388436A CN201910274801.XA CN201910274801A CN110388436A CN 110388436 A CN110388436 A CN 110388436A CN 201910274801 A CN201910274801 A CN 201910274801A CN 110388436 A CN110388436 A CN 110388436A
- Authority
- CN
- China
- Prior art keywords
- torque
- converters
- clutch
- lock
- electric vehicles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H41/00—Rotary fluid gearing of the hydrokinetic type
- F16H41/04—Combined pump-turbine units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H41/00—Rotary fluid gearing of the hydrokinetic type
- F16H41/24—Details
Abstract
Electric vehicles torque-converters is provided, the driving force that not only can be reduced power loss caused by sliding when electric vehicle is started to walk but also needed when can ensure that high load.Electric vehicles torque-converters is configured to, keep the pump impeller (2) connecting with input shaft (32) and the turbine (3) connecting with output shaft (33) arranged opposite, guide wheel (4) are configured between the pump impeller (2) and turbine (3), and is provided with and the lock-up clutch (9) for being under the defined conditions directly coupled input shaft (32) with output shaft (33) is engaged or separated by working hydraulic pressure；And the damping mechanism (8) being arranged between turbine (3) and output shaft (33), it is provided with spring (pressure exerting arrangement) (27) on electric vehicles torque-converters (1), engages lock-up clutch (9) in the low torque of electric vehicle starting；And releasing mechanism, separate the lock-up clutch (9) in engagement state according to transmitting torque.
Description
Technical field
The present invention relates to a kind of electric vehicles being arranged on the electric drive unit for being equipped on electric vehicle (EV vehicle)
Use torque-converters.
Background technique
In recent years, although for the purpose of low-carbon society, hybrid vehicle (the HEV vehicle of limiting emission gas is being promoted
) (for example, referring to patent document 1) and electric vehicle (EV vehicle) it is universal, still, about electric vehicle, when to starting and
The demand of biggish driving force when traction is still very high.
But realize that there are the following problems for this case that high driveization merely with motor: needing the increasing square of motor,
It is not avoided that enlargement and the height of motor are re-quantization.
As the means to solve the above problems, just in the side of the multiple motor of research equipment, additional speed changer and torque-converters
Case, but by the way that multiple motor are arranged, can be realized high drive, on the contrary, there is inevitable cost increases
The problem of.Although in addition, can ensure high drive using miniature motor by additional speed changer, it can generate into
The problem of this rising.
If additional torque-converters, then can ensure necessary driving force while inhibiting cost increase.In addition, setting exists
Torque-converters on electric vehicle is configured to, make with the pump impeller of the output axis connection of motor and with the input axis connection of retarder
Turbine is arranged opposite, guide wheel is configured between the pump impeller and turbine, also, lock-up clutch is arranged, which passes through
Working hydraulic pressure is engaged (ON)/separation (OFF), and under the defined conditions directly joins the output shaft and the input shaft
Knot fills the oil as torque transfer medium in the inside of torque-converters.
Citation
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2017-019394 bulletin
Summary of the invention
But in general torque-converters, in electric vehicle starting, if lock-up clutch is not engaged (connection),
Power loss caused by sliding can then be generated.Here, the spy for the previous torque-converters being arranged on electric vehicle is shown in FIG. 9
Property, in previous torque-converters, phase for being had differences between motor rotary speed (pump impeller revolving speed) and secondary speed (secondary speed)
Between, lock-up clutch is separated into (" LC separation " is shown as in Fig. 9), and so that turbine torque (is transmitted to turbine by torque amplification
Torque) it is bigger than motor torsional moment (output torque of motor).In this case, inevitably occur by motor rotary speed and
Power loss caused by the sliding of the difference of secondary speed.
But in electric vehicle, since the torque fluctuation of the motor as driving source is smaller, can be gentle
Ground starting, therefore, it is desirable to (connection) lock-up clutch will be engaged in starting, will the caused power loss of sliding inhibit compared with
It is low.
But as shown in figure 9, the working hydraulic pressure (locking open hydraulic) for engaging lock-up clutch in starting be 0 or
It is very low, therefore, it is impossible to engage lock-up clutch.In order to engage lock-up clutch in starting, electric oil pump is needed
(EOP) etc. expensive equipment, inevitably makes cost increase.
Moreover, in previous torque-converters, as shown in figure 9, when motor rotary speed and secondary speed become roughly equal
Between point by lock-up clutch engage (being shown as in Fig. 9 " LC engagement "), by the input shaft of motor be connected to the defeated of retarder
Shaft is directly coupled, and improves power transmission efficiency.
Even if necessary in order to obtain however, sometimes under high load area in the state of engaging lock-up clutch
Driving force is also wanted to be unable to satisfy such requirement in previous torque-converters using the torque enlarging function of torque-converters.
The present invention is to complete in view of the above problems, and its purpose is to provide a kind of electric vehicles torque-converters, the electricity
Power loss caused by sliding when dynamic Vehicular torque converter can either reduce electric vehicle starting can ensure high load again when
Necessary driving force.
In order to achieve the above objectives, the present invention is a kind of electric vehicles torque-converters 1, is consisted of, and configuration is being slowed down
Between device 40 and the motor 31 of electric motor drive unit 30 for being equipped on electric vehicle, make the input shaft with the motor 31
The pump impeller 2 and turbine 3 of 32 connections are arranged opposite, and turbine 3 is connect with the output shaft 33 for being connected to the retarder 40, in the pump impeller 2
Guide wheel 4 is configured between turbine 3, and being provided under the defined conditions will be described by working hydraulic pressure engagement or separation
The lock-up clutch 9 that input shaft 32 and the output shaft 33 are directly coupled；With setting the turbine 3 and the output shaft 33 it
Between damping mechanism 8, be filled with the oil as torque transfer medium, the feature of the electric vehicles torque-converters 1 exists
In being provided with pressure exerting arrangement 27, engage the lock-up clutch 9 in the low torque of electric vehicle starting；And
Releasing mechanism separates the lock-up clutch 9 in engagement state according to transmitting torque.
Torque-converters according to the present invention makes lock-up clutch by pressure exerting arrangement in the low torque of electric vehicle starting
Therefore engagement will can inhibit lower with the power loss of sliding when starting to walk.In addition, setting makes in engagement state
Lock-up clutch according to transmitting torque and therefore isolated releasing mechanism needs biggish driving force under high load area
In the case where, lock-up clutch separation can be made to amplify torque using the torque amplification of torque-converters by releasing mechanism,
To obtain biggish driving force.As a result, not only can be reduced power loss but also energy caused by sliding when electric vehicle starting
Ensure the driving force needed when high load.
In addition, in the present invention, can be the lock-up clutch 9 have by working hydraulic pressure sliding by the locking from
Clutch 9 engagement or isolated piston 18, the pressure exerting arrangement 27 to the direction for engaging the lock-up clutch 9 to the work
The spring of 18 force of plug is constituted.
In addition, in the present invention, can be the damping mechanism 8 and be configured to, comprising: output block 10, and it is described defeated
Shaft 33 combines；Input part 11,12 can carry out opposite revolve relative to the output block 10 within the scope of predetermined angular
Turn；And power transmitting elastomeric element 13, due to the relative rotation between these input parts 11,12 and output block 10
And flexible deformation occurs, to absorb torque fluctuation, the releasing mechanism has the input part of the damping mechanism 8
11, the relative rotation between 12 and the output block 10 is converted to the cam mechanism of the sliding of the piston 18.
In addition, in the present invention, can be the cam mechanism is by making the cam 28C being formed on piston element 28
It is constituted with the cam 10B engagement being formed on the output block 10, the piston element 28 and the input part 11
It engages and is integrally rotated together with the input part 11, also, the piston element 28 can be axially moveable.
In addition, in the present invention, when can be the releasing mechanism and needing to make to transmit torque amplification under high load area,
The lock-up clutch 9 in engagement state is separated.
According to the present invention, power loss caused by sliding when can either reduce electric vehicle starting, and can ensure height
The driving force needed when load.
Detailed description of the invention
Fig. 1 is the framework map for showing the structure of the electric drive unit with electric vehicles torque-converters of the invention.
Fig. 2 is the half sectional view of electric vehicles torque-converters of the invention.
Fig. 3 is input part, output block and the work for constituting the damping mechanism of electric vehicles torque-converters of the invention
The perspective view of plunger member.
Fig. 4 is the piston element of electric vehicles torque-converters of the invention and the perspective view of output block major part.
Fig. 5 is the portion the A amplification detail view in Fig. 2.
(a) of Fig. 6~(c) is the cross-sectional view for showing the line B-B in Fig. 5 of effect of releasing mechanism.
Fig. 7 is the relative angle for showing the inputoutput unit in the releasing mechanism of electric vehicles torque-converters of the invention
The figure of relationship between input torque.
Fig. 8 is the performance plot of electric vehicles torque-converters of the invention.
Fig. 9 is the performance plot of previous electric vehicles torque-converters.
Label declaration
1: torque-converters；2: pump impeller；3: turbine；4: guide wheel；5: torque-converters cover；6: one-way clutch；8: damping mechanism；9: lock
Only clutch；10: output block；10A: the flange part of output block；10B: the cam of output block；11,12: input part；
13: compression helical spring (power transmitting elastomeric element)；15,16: coupling pin；18: piston；19: friction clutch；27: bullet
Spring (pressure exerting arrangement)；28: piston element；28A: the main part of piston element: 28B: the push projection of piston element；28C: piston
The cam of component；30: electric motor drive unit；31: motor；32: input shaft；33: output shaft；40: retarder；50: differential
Device；60: driving wheel
Specific embodiment
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[structure of electric drive unit]
Firstly, below according to Fig. 1 to electric vehicles torque-converters (hreinafter referred to as " torque-converters ") of the invention
The structure of electric drive unit is illustrated.
Fig. 1 is the framework map for showing the structure of electric drive unit, and the electric motor drive unit 30 of diagram is mounted in electricity
Motor-car (EV vehicle), there is the motor 31 as driving source.Here, motor 31 is in the present embodiment by 3 phases
Brushless motor is constituted, and is had the hollow rotor 31a being rotatably received in its shell (not shown) and is fixed at this
Cricoid guide wheel 31b around rotor 31a.Moreover, although it is not shown, still, permanent magnet, In are built-in in rotor 31a
There are three the coils of phase for the installation of winding ground on guide wheel 31b.
Run through to be connected in the axis center of the rotor 31a of above-mentioned motor 31 and match along vehicle width direction (left and right directions of Fig. 1)
The cylindric input shaft 32 set, the input shaft 32 are coupled with the pump impeller 2 of torque-converters 1 of the invention.Here, bending moment of the invention
The details of the structure of device 1 illustrates that the torque-converters 1 includes the turbine 3 arranged opposite with the pump impeller 2, is mounted on the whirlpool later
Damping mechanism 8 and lock-up clutch 9 on wheel 3.
Output shaft 33 is from the center of the turbine 3 of above-mentioned torque-converters 1 through the axis center of the input shaft 32 and along vehicle width side
To horizontal extension, the gear 41 of the path of retarder 40 is fixed in the end (right part of Fig. 1) of the output shaft 33.Moreover,
The gear 41 is engaged with the gear 43 for the major diameter for being fixed in the countershaft 42 configured in parallel with output shaft 33.In addition, in countershaft
The gear 44 of path is fixed on 42, the gear 44 and the gear ring 45 for the major diameter for being fixed in differential gear (differential gear) 50 are nibbled
It closes.Here, the different gear 41 and gear 43 and gear 44 and gear ring 45 of the diameter being engaged with each other is respectively in retarder
Reduction gearing column are constituted in 40.
Above-mentioned differential gear 50 is to will enter into this torque to be divided into two parts of devices for being transmitted to the axle 51 of left and right, left and right
Axle 51 end be separately installed with left and right driving wheel 60.
In the electric motor drive unit 30 of above-mentioned composition, the motor 31 as driving source is started, thus input shaft
After 32 rotate together with the rotor 31a of the motor 31, which is passed to output shaft 33 via torque-converters 1, thus should
Output shaft 33 is rotated.In addition, about the thin of torque-converters 1 and the damping mechanism 8 that is disposed thereon and lock-up clutch 9
Section, illustrates later.
Then, the rotation of output shaft 33 is decelerated and is passed to via gear 41, the gear 43 of composition reduction gearing column
The rotation of countershaft 42, the countershaft 42 is passed to differential gear 50 via the gear 44 and gear ring 45 for constituting reduction gearing column.In
In differential gear 50, therefore the axle 51 that the torque for being transmitted to this is divided into two parts and is transmitted to left and right is mounted on the vehicle of left and right
The driving wheel 60 of left and right on axis 51 is rotated by driving respectively, so that electric vehicle travels.
[structure of torque-converters]
Next, being illustrated below with respect to details of Fig. 2~Fig. 6 to the structure of torque-converters 1 of the invention.
Fig. 2 is the half sectional view of Vehicular torque converter of the invention, and Fig. 3 is the input part and output block of damping mechanism
And the perspective view of piston element, Fig. 4 are the piston element of the same damping mechanism and the perspective view of output block major part,
Fig. 5 is the portion the A amplification detail view in Fig. 2, and (a)~(c) in Fig. 6 is the cross-sectional view of the line B-B in Fig. 5, the bending moment of diagram
Device is to pass to the power exported from motor shown in FIG. 1 to input shaft to output shaft via the oil as torque transfer medium
Component, have the function of gentle clutch and torque enlarging function.
Torque-converters 1 shown in Fig. 2 have by input shaft 32 shown in FIG. 1 carry out rotation driving pump impeller 2 and with the pump impeller 2
Turbine 3 arranged opposite is configured with guide wheel 4 between the pump impeller 2 and turbine 3.
Above-mentioned pump impeller 2 is configured to the inner surface in the peripheral part close to bowl-shape pump case 2A circumferentially between equal angles
Away from multiple impeller blade 2a are arranged, pump case 2A is engaged with identical bowl-shape torque-converters cover 5.Then, pass through pump case 2A and torque-converters
Cover 5 forms confined space S, filled with the low oil of viscosity as torque transfer medium in confined space S.
The turbine 3 also identicallyly as pump impeller 2, is configured in peripheral part close to bowl-shape turbine case 3A and pump impeller 2
Circumferentially with the multiple turbine wheel 3a of equal angles spacing arrangement on opposed inner surface.Moreover, matching between pump impeller 2 and turbine 3
It is equipped with the guide wheel 4 as impeller, on the periphery of the guide wheel 4, is rectified for the flowing to oil and carries out torque and put
Big multiple guide wheel piece 4a are circumferentially with equal angles spacing arrangement.In addition, being provided with one-way clutch 6 on the guide wheel 4, lead
Wheel 4 being capable of or idle running static by the effect of one-way clutch 6.Here, pump impeller 2 and guide wheel 4 are located at axis between the two
The bearing of (thrust bearing) 7 is held as being capable of relative rotation.
But in the torque-converters of present embodiment 1, hold between the turbine 3 and torque-converters cover 5 of the confined space S
Receiving has damping mechanism 8 and lock-up clutch (LC) 9.
Above-mentioned damping mechanism 8 is used to absorb the torque fluctuation of motor 31 shown in FIG. 1, and it includes: disk-shaped for consisting of
Output block 10, with output shaft 33 shown in FIG. 1 by spline it is chimeric combine；Cricoid input part 11,12, matches
Being set to being capable of relative rotation in the two sides of the flange part 10A extended outward from the periphery of the output block 10 towards diameter；And 4
A compression helical spring 13 (referring to Fig. 3), they, which are compressed, is mounted between output block 10 and two input parts 11,12.
In addition, damping mechanism 8 and guide wheel 4 are located at the bearing of bearing (thrust bearing) 14 between the two as being capable of relative rotation.In addition,
4 compression helical springs 13 are circumferentially with the configuration of equal angles spacing (referring to Fig. 3).
Here, two input parts 11,12 are coupled by multiple (6) coupling pins 15, each coupling pin 15 is penetratingly formed at
The longer 6 long hole 10a of circumferential direction on the flange part 10A of output block 10 (referring to Fig. 3).In addition, as shown in figure 3,6 long holes
10a is circumferentially with equal angles spacing (60 ° of spacing) formation.
Therefore, each coupling pin 15 can be in each long hole 10a on the flange part 10A for being formed in output block 10 circumferentially
In mobile angular range, two input parts 11,12 can carry out relative rotation relative to output block 10.In addition, same
Two, ground input part 11,12 and turbine 3 (turbine case 3A) are coupled by coupling pin 16, and coupling pin 16 is penetratingly formed at output section
Long hole 10b on the flange part 10A of part 10, so that two input parts 11,12 and turbine 3 (are coupled in defined angular range
Pin 16 can be circumferentially moved in long hole 10b angular range) can relative to output block 10 carry out relative rotation, such as hereinafter
It is described, via turbine 3 transmit motor 31 torque fluctuation by with damping mechanism 8 two input parts 11,12 with it is defeated
Out the relative rotation of component 10 and the flexible deformation of 4 compression helical springs 13 that generates absorbs.
The lock-up clutch (LC) 9 by annular plate-like piston 18 and be set to the piston 18 peripheral part friction from
Clutch 19 is constituted, wherein the periphery of piston 18 and wheel hub 17 spline in a manner of it can slide along axial direction (left and right directions of Fig. 2)
It is chimeric.Here, be bonded to retainer 20 on the inner surface of torque-converters cover 5, retainer 21 by pin 22 be installed in two it is defeated
On the peripheral part for entering component 11,12.Moreover, friction clutch 19 include its peripheral part in a manner of it can be axially moveable with
2 friction plates 23 of the inner circumferential engagement of retainer 20；It can be in a manner of being axially moveable with retainer 21 with its inner peripheral portion
2 plates 24 of periphery engagement, the friction plate 23 and plate 24 are alternately arranged in the axial direction.
Above-mentioned each 2 friction plates 23 being alternately arranged in the axial direction and plate 24 are fixed in the inner circumferential of retainer 20
The peripheral part of retainer 25 and piston 18 is seized on both sides by the arms, they are pressed into 25 side of retainer by disk spring 26.
Here, the connection room S1 and open chamber S2 divided by piston 18 is formed in confined space S, when working oil (pressure
Power oil) when being supplied to connection room S1 from oil pump (not shown), the piston 18 of the pressure by the working oil is moved to the right of Fig. 2
It is dynamic, so that the friction plate 23 of friction clutch 19 and plate 24 are pressed into retainer 25, therefore, the friction plate 23 and plate 24
Become engagement state and power can be transmitted by the way that frictional resistance therebetween occurs, so that lock-up clutch 9 becomes
(connection) state of engagement.In contrast, when working oil is supplied to open chamber S2 from oil pump (not shown), by the working oil
Pressure piston 18 it is mobile to release the friction plate 23 of friction clutch 19 and the joint shape of plate 24 to the left of Fig. 2
State, therefore, lock-up clutch 9 become to separate (cutting) state.
But in the present embodiment, electric vehicle starting low torque when (cannot to connection room S1 provide in order to
When making the engagement of lock-up clutch 9 and the state of the working oil of the pressure of needs), it is provided with the pressure for engaging lock-up clutch 9
Mechanism, the pressure exerting arrangement is by spring (the spiral bullet that is mounted between the piston 18 of lock-up clutch 9 and torque-converters cover 5 by compression
Spring) 27 compositions.
In addition, in the present embodiment, being provided with divides the lock-up clutch 9 in engagement state according to transmitting torque
From releasing mechanism.The releasing mechanism has cam mechanism, when the input part 11,12 and output block 10 of damping mechanism 8 are logical
Cross motor 31 via in engagement state lock-up clutch 9 be transmitted to damping mechanism 8 torque (input torque) and into
When row relative rotation, which is converted to the relative rotation the axial displacement of piston element 28.
Here, details is such as shown in Figure 4, above-mentioned piston element 28 is configured to, in the main part 28A of annular plate-like
A surface (surface of the side opposed with piston 18) on circumferentially integrally protruded with equal angles spacing (60 ° of spacing)
6 push projection 28B are provided with, circumferentially with equal on another surface (surface of the side opposed with output block 10)
Angle spacing (90 ° of spacing) has integrally been provided projectingly 4 cam 28C.Moreover, the piston element 28 is installed into: being formed in
The joint fastener 11a of 6 claw-likes in the inner peripheral portion of one input part 11 is engaged in be formed between adjacent push projection 28B
Incision-like engaging groove 28a, push projection 28B is provided projectingly on piston element 28, thus piston element 28 and the input unit
Part 11 integrally rotates.In addition, 6 joint fastener 11a being formed on input part 11 are circumferentially with (60 ° of equal angles spacing
Spacing) configuration.
On the other hand, as shown in figure 4, on the surface opposed with piston element 28 of the output block 10 of damping mechanism 8
Around central part, 4 cam 10B, these cams have circumferentially been provided projectingly integrally with equal angles spacing (90 ° of spacing)
10B can be engaged with the cam 28C being provided projectingly on piston element 28, by these cams 10B, 28C to constitute
State cam mechanism.In addition, in each cam 28C being provided projectingly on piston element 28 and being provided projectingly on output block 10
The cam surface 10c of the conical surface (inclined-plane) shape is respectively formed on each cam 10B.In addition, as shown in Fig. 2, piston element 28 and piston
18 are located at the bearing of bearings (thrust bearing) 29 between the two as being capable of relative rotation.
[effect of torque-converters]
Next, being illustrated to the effect of the torque-converters 1 of above-mentioned composition.
In electric vehicle, the torque fluctuation of the motor 31 (referring to Fig.1) as driving source is smaller, so can be gentle
Ground starting, therefore, as previously mentioned, expectation engages (connection) lock-up clutch 9 in starting, power loss suppression caused by sliding
It is made lower.
But the working hydraulic pressure (locking open hydraulic) for engaging lock-up clutch 9 in electric vehicle starting be 0 or
It is very low, therefore, lock-up clutch 9 cannot in the past engaged.
Then, in the present embodiment, the compression of the spring 27 as precompressed mechanism is mounted on to the piston of lock-up clutch 9
Between 18 and torque-converters cover 5, even if also utilizing the right side of the spring 27 to Fig. 1 when the starting of sufficient working hydraulic pressure can not be obtained
Side exerts a force to piston 18 and connects friction clutch 19, therefore lock-up clutch 9 is engaged, motor 31 shown in FIG. 1 it is defeated
The output shaft 33 for entering axis 32 and being connected with retarder 40 is directly coupled.That is, the input shaft 32 in torque-converters 1, with motor 31
The rotation of the torque-converters cover 5 rotated together is via the lock-up clutch 9 and damping mechanism 8 for being in engagement state directly (without warp
By oil) it is transmitted to output shaft 33, therefore, it can will press down with pump impeller 2 and the power loss of the sliding (rotation speed is poor) of turbine 3
It is made lower, it is ensured that higher power transmission efficiency.Here, the characteristic of the torque-converters 1 of present embodiment, In is shown in FIG. 8
When electric vehicle is started to walk, if lock-up clutch 9 becomes engagement state (being shown as " LC engagement " in Fig. 8), motor rotary speed (pump impeller
2 revolving speed) it is roughly the same with secondary speed (revolving speed of turbine 3), it therefore, can will be with the dynamic of pump impeller 2 and the sliding of turbine 3
Power loss inhibits lower, so that it is guaranteed that higher power transmission efficiency.In addition, in the state that lock-up clutch 9 is engaged,
The torque fluctuation for being transmitted to damping mechanism 8 of motor 31 be damped input part 11,12 in mechanism 8 and output block 10 it
Between relative rotation caused by compression helical spring 13 flexible deformation absorb.
Moreover, electric vehicle as described above in the state that lock-up clutch 9 is engaged when driving, if motor 31
Torque (motor torsional moment) is more than certain value as shown in Figure 8 and increases, then releasing mechanism separates lock-up clutch 9, utilizes bending moment
The torque amplification of device 1 improves turbine torque (torque for being transmitted to output shaft 33).
Here, the locking clutch realized according to Fig. 6 and Fig. 7 to the effect of the cam mechanism by being set to releasing mechanism
The separating action of device 9 is illustrated.
Fig. 7 is to show relative angle (damper windup-degree) θ of input part 11,12 and output block 10 relative to defeated
The figure for entering the relationship to the input torque T of damping mechanism 8, when input torque T is 0, as shown in (a) in Fig. 6, in input unit
Relative rotation (torsion) is not generated between part 11 (piston element 28) and output block 10, input part 11 and output section at this time
The relative angle θ of part 10 is 0.Then, when input torque T rises to Tb as shown in Figure 7, as shown in (b) in Fig. 6, defeated
Enter and generates relative rotation between component 11 (piston element 28) and output block 10, input part 11 and output block 10 at this time
Relative angle θ such as Fig. 6 in (b) and Fig. 8 shown in become θ b.
In the state of shown in (b) in Fig. 6, due to the cam 28C that is provided projectingly on piston element 28 not with protrusion
Cam 10B engagement on output block 10 is set, and therefore, piston element 28 is not axially moveable, and the maintenance of lock-up clutch 9 connects
Conjunction state.
Then, the input part 11 when input torque further increases and is increased to Tc as shown in Figure 8, in damping mechanism 8
The relative rotation (torsion) of (piston element 28) and output block 10 is further enlarged, and the relative angle θ of the two is shown in Fig. 6
(c) and the value of θ c shown in Fig. 7.At this point, being provided projectingly on the cam 28C of piston element 28 as shown in (c) in Fig. 6 and dashing forward
The cam 10B for being set to output block 10 out is engaged with each other, and therefore, piston element 28 is to graphic arrow direction ((c) in Fig. 6
Left) it is mobile, the push projection 28B of the piston element 28 applies piston 18 to the same direction by bearing (thrust bearing) 29
Power.As a result, piston 18 is mobile to the direction for keeping lock-up clutch 9 isolated, and therefore, the lock-up clutch in engagement state
9 are separated, by the effect of torque-converters 1 described below, as shown in figure 8, turbine torque is amplified relative to motor torsional moment, compared with
Big driving force is passed to output shaft 33 shown in FIG. 1.In addition, as shown in figure 8, in the isolated state of lock-up clutch 9 (figure
" LC separation " is shown as in 8) under, it is poor to generate between motor rotary speed and secondary speed, therefore, it may occur that with pump impeller 2 and whirlpool
The power loss of the sliding of wheel 3.Here, in Fig. 6 (b), in (c), the opposite rotation of piston element 28 is shown by a dotted line
Position (position shown in (a) in Fig. 6) before turning.
Here, the effect of the torque-converters 1 when being in discrete state to lock-up clutch 9 below is illustrated.
That is, when lock-up clutch 9 is in discrete state, the pump that is connect with the input shaft 32 of motor 31 shown in FIG. 1
Wheel 2 is integrally rotated with input shaft 32.In this way, the oil rotated together by viscosity with pump impeller 2 is since centrifugal force is from pump impeller 2
Periphery is sent out towards turbine 3, which flows into turbine 3 along the inner surface of pump case 2A.Then, the oil collision for having flowed into the turbine 3 is more
A turbine wheel 3a, therefore, turbine 3 is rotated due to inertia force, the oil rotated in turbine 3 from periphery towards center, from this
Also the turbine 3 is rotated using reaction force when turbine 3 flows out.
Later, the oil flowed out from turbine 3 is by the change direction of guide wheel 4 and from immediate vicinity inflow pump impeller 2 and in the pump impeller 2
After rotation, it is added to around the back side of the pump impeller 2 in initial flowing.By repeating the flowing of such a series of oil,
The torque for being transmitted to turbine 3 from pump impeller 2 is amplified, and amplified torque is transmitted to damping mechanism 8 from turbine 3, utilizes the damping
The torque fluctuation of the absorption motor 31 of mechanism 8.In addition, there are during rotational difference between pump impeller 2 and turbine wheel 3, guide wheel 4
It is static and play torque enlarging function, in the rotation speed of pump impeller 2 and turbine wheel 3 after, torque amplification that guide wheel 4 generates
Decreased effectiveness, guide wheel 4 hinders the flowing of oil instead, and due to the effect of one-way clutch 6, guide wheel 4 rotates (empty together with turbine 3
Turn).
As previously mentioned, torque is transmitted to from the output block 10 of the damping mechanism 8 when torque is transmitted to damping mechanism 8
Output shaft 33 shown in FIG. 1, so that the output shaft 33 is rotated by driving, the rotation of the output shaft 33 is via electricity shown in FIG. 1
The retarder 40 and differential gear 50 of motivation unit 30 are transmitted to the axle 51 of left and right, are mounted on the left and right on the axle 51 of left and right
Driving wheel 60 rotated respectively by driving.
As previously discussed, torque-converters 1 according to the present embodiment, in the low torque of electric vehicle starting, by by bullet
The pressure exerting arrangement that spring 27 is constituted engages lock-up clutch 9, therefore, can will inhibit with the power loss of sliding when starting to walk
It obtains smaller.In addition, the releasing mechanism that setting keeps the lock-up clutch 9 in engagement state isolated according to transmitting torque, therefore,
In the case where needing biggish driving force under high load area, lock-up clutch 9 can be made to separate by releasing mechanism, and benefit
Amplify torque with the torque amplification of torque-converters 1 and obtains biggish driving force.As a result, following effect can be obtained:
The driving force needed when can either reduce power loss caused by sliding when electric vehicle is started to walk, and can ensure that high load.
In addition, in the above embodiment, pressure exerting arrangement is constituted by spring (helical spring) 27, and still, pressure
Mechanism is able to use the arbitrary means other than spring 27.
In addition, in the above embodiment, as the releasing machine for making lock-up clutch 9 isolated under high load area
Structure, use following mechanism: be utilized by damping mechanism 8 input part 11 and output block 10 due to input torque and
Caused relative rotation is converted to the axially displaced cam mechanism of piston element 28.But as long as under high load area
Lock-up clutch 9 is separated, other arbitrary mechanisms are also able to use.
In addition, the present invention is not limited to apply in the embodiment described above, in claims, the description and the appended drawings
Various modifications are able to carry out in the range of documented technical idea.
Claims (5)
1. a kind of electric vehicles torque-converters, which is configured in retarder and is equipped on electric vehicle
Between the motor of electric motor drive unit,
The electric vehicles torque-converters is configured to, and keeps pump impeller arranged opposite with turbine, the input of the pump impeller and the motor
Axis connection, the turbine and the output axis connection for being connected to the retarder are configured with guide wheel between the pump impeller and turbine, and
And the electric vehicles torque-converters is provided with
Lock-up clutch is engaged or is separated by working hydraulic pressure, under the defined conditions by the input shaft and described defeated
Shaft is directly coupled；And
Damping mechanism is arranged between the turbine and the output shaft,
The electric vehicles torque-converters is filled with the oil as torque transfer medium,
The electric vehicles torque-converters is characterized in that, is provided with
Pressure exerting arrangement engages the lock-up clutch in the low torque of electric vehicle starting；And
Releasing mechanism separates the lock-up clutch in engagement state according to transmitting torque.
2. electric vehicles torque-converters according to claim 1, which is characterized in that
The lock-up clutch, which has, is engaged the lock-up clutch or isolated piston by working hydraulic pressure sliding,
The pressure exerting arrangement is made of spring, which exerts a force to the piston to the direction for engaging the lock-up clutch.
3. electric vehicles torque-converters according to claim 2, which is characterized in that
The damping mechanism is configured to, comprising:
Output block, in conjunction with the output shaft；
Input part can carry out relative rotation relative to the output block in defined angular range；And
Power transmitting elastomeric element, occurs flexible deformation due to the relative rotation of the input part and output block, from
And torque fluctuation is absorbed,
The releasing mechanism has cam mechanism, and the cam mechanism is by the input part of the damping mechanism and the output
Relative rotation between component is converted to the sliding of the piston.
4. electric vehicles torque-converters according to claim 3, which is characterized in that
The cam mechanism is connect by the cam for making the cam being formed on piston element and being formed on the output block
It closes come what is constituted, the piston element is engaged with the input part and integrally rotated together with the input part, and institute
Stating piston element can be axially moveable.
5. electric vehicles torque-converters described in any 1 according to claim 1~4, which is characterized in that
When needing to make to transmit torque amplification under high load area, the releasing mechanism make the locking in engagement state from
Clutch separation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018081910A JP2019190521A (en) | 2018-04-20 | 2018-04-20 | Torque converter for electrically-driven vehicle |
| JP2018-081910 | 2018-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110388436A true CN110388436A (en) | 2019-10-29 |
Family
ID=68284930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910274801.XA Withdrawn CN110388436A (en) | 2018-04-20 | 2019-04-08 | Electric vehicles torque-converters |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2019190521A (en) |
| CN (1) | CN110388436A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021203658A1 (en) | 2021-04-14 | 2022-10-20 | Zf Friedrichshafen Ag | Motor vehicle, method and drive device for a motor vehicle |
| CN116201865A (en) | 2021-11-30 | 2023-06-02 | 通用汽车环球科技运作有限责任公司 | Hydraulically actuated clutch system and control logic for a torque converter assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009156425A (en) * | 2007-12-27 | 2009-07-16 | Aisin Aw Co Ltd | Automatic transmission |
| JP2011080541A (en) * | 2009-10-07 | 2011-04-21 | Toyota Motor Corp | Fluid transmission device |
| JP2011220374A (en) * | 2010-04-05 | 2011-11-04 | Toyota Motor Corp | Drive control device |
| JP2011231857A (en) * | 2010-04-27 | 2011-11-17 | Toyota Motor Corp | Driving device |
| JP2015010669A (en) * | 2013-06-28 | 2015-01-19 | ダイハツ工業株式会社 | Power transmission mechanism |
-
2018
- 2018-04-20 JP JP2018081910A patent/JP2019190521A/en not_active Ceased
-
2019
- 2019-04-08 CN CN201910274801.XA patent/CN110388436A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009156425A (en) * | 2007-12-27 | 2009-07-16 | Aisin Aw Co Ltd | Automatic transmission |
| JP2011080541A (en) * | 2009-10-07 | 2011-04-21 | Toyota Motor Corp | Fluid transmission device |
| JP2011220374A (en) * | 2010-04-05 | 2011-11-04 | Toyota Motor Corp | Drive control device |
| JP2011231857A (en) * | 2010-04-27 | 2011-11-17 | Toyota Motor Corp | Driving device |
| JP2015010669A (en) * | 2013-06-28 | 2015-01-19 | ダイハツ工業株式会社 | Power transmission mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019190521A (en) | 2019-10-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5455328B2 (en) | Hydrodynamic coupling device for hybrid vehicles | |
| US7992661B2 (en) | Hybrid vehicle drive device | |
| US9316265B2 (en) | Torque damper apparatus | |
| US20120178567A1 (en) | Dual damper isolation for a motor vehicle hybrid powertrain | |
| US20070251792A1 (en) | One-way clutch with dampening | |
| JP5553487B2 (en) | Torque converter with anti-rattle and cooling flow arrangement | |
| US20220219525A1 (en) | P2 module architecture | |
| JP2009019772A (en) | Two pass multi-function torque converter | |
| US6899210B2 (en) | Piston coupling mechanism and lockup device for fluid-type torque transmission device equipped with the same | |
| CN110388436A (en) | Electric vehicles torque-converters | |
| JPH07502325A (en) | Dampers and bypass clutches for fluid torque converters | |
| US9181992B2 (en) | Torque converter for motor vehicle | |
| US11904695B2 (en) | Integrated torque converter and P2 module | |
| US20240001755A1 (en) | Hybrid driving module | |
| JP2022532175A (en) | Hydrodynamic torque coupling device with lockup clutch with dual piston assembly and selectable one-way clutch | |
| US7849985B2 (en) | Pilot plate torque transmitting assembly for a torque converter | |
| US7360633B2 (en) | Lockup device of hydraulic torque transmission device | |
| KR20160021111A (en) | System and method for actuating a mechanical diode clutch assembly | |
| US10082190B2 (en) | Lock-up device for torque converter | |
| JPH11141617A (en) | Damper device | |
| US10012298B2 (en) | Torque converter for manual transmission and method of controlling the same | |
| JP7429661B2 (en) | torque converter | |
| JP7374291B2 (en) | Hydrodynamic torque coupling device with lock-up clutch including dual piston assembly | |
| JP7303230B2 (en) | Transmission with dynamic damper and torque converter | |
| JP2008281201A (en) | Stator blade of 3 section configurations |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191029 |