CN109910584A

CN109910584A - Hybrid module and hybrid vehicle

Info

Publication number: CN109910584A
Application number: CN201910080930.5A
Authority: CN
Inventors: 王欢
Original assignee: Schaeffler Technologies AG and Co KG
Current assignee: Schaeffler Technologies AG and Co KG
Priority date: 2019-01-28
Filing date: 2019-01-28
Publication date: 2019-06-21

Abstract

The invention provides a hybrid module and a hybrid vehicle. A hybrid module for mounting between an internal combustion engine and a transmission, comprising a central shaft for connection to the internal combustion engine via the clutch, an electric machine comprising a rotor and a rotor flange, which is connected to the rotor in a rotationally fixed manner, and a clutch, which is arranged at a distance from the electric machine in the axial direction of the central shaft, the clutch comprising a driven disk and a pressure disk, which is connected to the central shaft in a rotationally fixed manner. The hybrid module has the advantages of reasonable structure, low manufacturing cost, high heat capacity of the clutch and small influence of heat generated by friction of the clutch on the motor.

Description

Hybrid power module and hybrid vehicle

Technical field

The present invention relates to motor vehicle driven by mixed power field, and in particular to hybrid power module and including the hybrid power module Hybrid vehicle.

Background technique

In hybrid electric drive system, the hybrid power mould including motor between internal combustion engine and speed changer will be placed in Block is referred to as P2 hybrid power module (hereinafter referred to as P2 module).

Fig. 1 shows a kind of structural schematic diagram of existing P2 module.The P2 module can be used for according to different operating conditions The power of the power of internal combustion engine and/or motor 30 is transmitted to speed changer, and the kinetic energy in vehicle driving is recycled to motor Battery in.The P2 module includes central axis 10, shell 20, motor 30, clutch 40, executive module 50 and flexible disc component 60.Motor 30 and internal combustion engine are the power sources of P2 module.Central axis 10 is power input unit, and flexible disc component 60 is power output Portion.

Motor 30 includes stator 31, rotor 32, rotor field spider 33 and rotor flange 34, wherein rotor 32 is located at stator 31 Radially inner side.The output selectivity of internal combustion engine is transmitted to speed changer under the actuating of executive module 50 by clutch 40.Example Such as, it is remained engaged with when clutch 40 is not activated, is individually fixed in platen 401 and two clutches to platen 402 at this time Piece (hereinafter referred to as a pair of of clutch disc) compresses each other, and executive module 50, which activates clutch 40, at this time can be such that clutch 40 disconnects It engages (a pair of of clutch disc is separated from each other), so that the output for disconnecting internal combustion engine to speed changer is transmitted.Flexible disc component 60 via Screw is fixed to platen 402, rotor field spider 33 is installed to via multiple pins to platen 402, thus by the rotation of rotor 32 It is output to speed changer.

The P2 module of the above-mentioned prior art is faced with following challenge:

(i) industry is usually not intended to the axial dimension of power assembly too big, especially horizontal, front-wheel drive dynamic in engine In power assembly, the axial dimension of power assembly is more limited.And the axial dimension of P2 module occupies in the axial direction of power assembly Larger space.

(ii) be the axial dimension for reducing power assembly, it is a kind of it is contemplated that method be to save vehicle in speed changer to rise It walks element (such as fluid torque-converter or clutch).However, the clutch 40 in P2 module needs after saving vehicle start element Have it is bigger can bearing torque to adapt to such as vehicle shift or restart the torque that power assembly transmits in engine process Variation, in the case where the contact area to transmit torque of the friction plate of clutch 40 is constant, bigger bearing torque So that the fever of the friction plate of clutch 40 is more serious, this is very big challenge to the thermal capacity of clutch 40, and due to clutch Device 40 is installed in motor 30, and the excessively high normal operation that can also threaten motor 30 of the temperature of clutch 40 even makes motor 30 Rotor 32 demagnetizes.

Summary of the invention

In view of the above-mentioned prior art state and make the present invention.The purpose of the present invention is to provide a kind of hybrid power moulds Block is placed between internal combustion engine and speed changer for selectively transmitting power from internal combustion engine and/or from motor Power.

According to the first aspect of the invention, a kind of hybrid power module is provided, is used to be installed on internal combustion engine and speed changer Between, the hybrid power module includes central axis, motor and clutch, wherein

The central axis is used to be connected via the clutch with the internal combustion engine,

The motor includes rotor and rotor flange, and the rotor flange is torsionally connected with the rotor, the rotor Flange is also torsionally connected with the central axis,

The clutch is arranged in the axial direction of the central axis at interval with the motor, the clutch include from Moving plate and platen, the driven disc are torsionally connected with the central axis.

In at least one embodiment, the clutch is located in two different chambers from the motor.

In at least one embodiment, the shell of the hybrid power module includes outer blocking portion and internal resistance stopper, institute Outer blocking portion is stated to be located at the radial outside of the hybrid power module and be enclosed in each components of the hybrid power module The radially inner side of the outer blocking portion, the internal resistance stopper are connected with the outer blocking portion and to the diameters of the hybrid power module Extend inwardly, the internal resistance stopper inner space of the shell is separated into separated in the axial direction it is described two Different chambers.

In at least one embodiment, control of the engagement or separation of the clutch by executive module, the execution Component includes including concentric slave cylinders and including concentric slave cylinders shell, and the including concentric slave cylinders shell is fixedly installed to the internal resistance stopper simultaneously The inner space of the shell is separated into described two different chambers together with the internal resistance stopper.

In at least one embodiment, the executive module further includes modular clutch actuator, the modularization Clutch actuator is connected with the including concentric slave cylinders by fluid pressure line, and the modular clutch actuator is for adjusting institute The pressure of fluid pressure line inner fluid is stated to drive the including concentric slave cylinders.

In at least one embodiment, control of the engagement or separation of the clutch by executive module, the execution Component includes including concentric slave cylinders and modular clutch actuator, the modular clutch actuator and the including concentric slave cylinders It is connected by fluid pressure line, for adjusting the pressure of the fluid pressure line inner fluid to drive the including concentric slave cylinders, in institute It states internal resistance stopper and offers the conduit for accommodating the fluid pressure line.

In at least one embodiment, the driven disc is greater than the rotor in the size radially of the central axis In the size radially.

In at least one embodiment, one end of the central axis by the clutch and double mass flywheel with it is described Internal combustion engine is connected, and the other end of the central axis is prominent to radial outside and is connected with the rotor flange.

In at least one embodiment, the rotor flange is connected by flexible disc component with the speed changer.

According to the second aspect of the invention, provide it is a kind of it include hybrid power module according to the present invention.

Hybrid power module according to the present invention, structurally reasonable manufacturing cost is low, and the thermal capacity of clutch is high, and because from Influence of the heat that the friction of clutch generates to motor is small.

Detailed description of the invention

Fig. 1 shows a kind of diagrammatic cross-section of the radial side positioned at central axis of existing P2 hybrid power module.

Fig. 2 is the radial side positioned at central axis of P2 hybrid power module according to embodiment of the present invention Diagrammatic cross-section.

Fig. 3 is P2 hybrid power module moving under pure internal combustion engine drive mode according to embodiment of the present invention The schematic diagram of power transmission path.

Fig. 4 is power of the P2 hybrid power module under pure motor drive mode according to embodiment of the present invention The schematic diagram of transmission path.

Fig. 5 is power biography of the P2 hybrid power module under combination drive mode according to embodiment of the present invention Pass the schematic diagram in path.

Fig. 6 is power biography of the P2 hybrid power module in the case where recycling charge mode according to embodiment of the present invention Pass the schematic diagram in path.

Description of symbols

10 central axises；11 flange portions；

20 shells；21 outer blocking portions；22 internal resistance stoppers；201 first chambers；202 second chambers；

30 motors；31 stators；32 rotors；33 rotor field spiders；34 rotor flanges；

40 clutches；41 platens；42 driven discs；

50 executive modules；51CSC；511CSC shell；

60 flexible disc components；70 double mass flywheels；80 rotary transformers.

Specific embodiment

Exemplary embodiments of the present invention are described with reference to the accompanying drawings.It should be appreciated that these specific descriptions are only used for How teaching those skilled in the art implement the present invention, rather than all feasible modes that exhaustion is of the invention, without in It limits the scope of the invention.

Fig. 2 shows the structural schematic diagram of P2 module according to embodiment of the present invention, which can make For the example of the dynamic coupling device for power car.In Fig. 2, A indicates the axial direction of P2 module, axial direction A and central axis 10 axial direction is consistent；R indicates the radial direction of P2 module, radial direction R and central axis 10 it is radially consistent.On the axial A of the P2 module Side (left side in Fig. 2) may be coupled to internal combustion engine, the other side (right side in Fig. 2) on the axial A of the P2 module can To be connected to speed changer.Fig. 2 show the structure of the radial side of central axis 10.

Referring to Fig. 2, P2 module mainly include shell 20 and positioned at shell 20 radial R inside central axis 10, double Mass flywheel 70, clutch 40, motor 30 and flexible disc component 60.Central axis 10 and flexible disc component 60 are torsionally (both i.e. It connects relatively unrotatablely).

Outer blocking portion 21 of the shell 20 including generally axially A extension is big with the radially inner side for being inscribed in outer blocking portion 21 The internal resistance stopper 22 that radially R extends is caused, the inside of shell 20 is separated into the axial A positioned at internal resistance stopper 22 by internal resistance stopper 22 Two sides the first chamber 201 and the second chamber 202.

Clutch 40 is located in the first chamber 201 comprising platen 41 and driven disc 42, driven disc 42 and central axis 10 are antitorque Ground connection, the driving of active receiving actuator of the platen 41 on axial A.Preferably, clutch 40 is the wear-self-compensation of dry type Clutch, about abrasion from supplement clutch dependency structure, such as be referred to patent CN102884333B or The full content of above-mentioned two pieces patent is incorporated herein by reference by CN101952613B, the application.In the present embodiment, by It will not be interfered on radial R in clutch 40 and motor 30, therefore clutch 40 can have biggish radial dimension, example As the friction plate of clutch 40 is greater than size of the rotor 32 on radial R in the size on radial R.The radial dimension of friction plate is got over Greatly, thermal capacity it is bigger, can bearing torque it is bigger, in the present embodiment, the biggish radial dimension of clutch 40 makes it Can bearing torque be 250Nm.Due to clutch 40 have it is biggish can bearing torque and thermal capacity, using according to the present embodiment P2 module power assembly can not have the vehicle start element such as the clutch in speed changer, without influence such as vehicle It shifts gears or restarts the torque transmitting in engine process in power assembly.

Preferably, the executive module 50 of clutch includes two executive components, respectively including concentric slave cylinders 51 (Concentric Slave Cylinder, below also abbreviation CSC) and modular clutch actuator (Modular Clutch Actuator, below also abbreviation MCA).Wherein, CSC 51 is mounted in the CSC shell 511 of the inside of shell 20, CSC shell 511 can be connected by screw to internal resistance stopper 22, and there are between lesser on radial R between CSC shell 511 and central axis 10 Every, in the interval be equipped with bearing (not shown) enable CSC shell 511 relatively central axis 10 be rotationally coupled to central axis 10.More than, internal resistance stopper 22 together constitutes the spacer portion of P2 inside modules together with CSC shell 511, so that 201 He of the first chamber Second chamber 202 is separated with certain tightness.

The release bearing of CSC 51 can be moved to push and most connect with CSC 51 on axial A by hydraulic pressure effect Close platen 41 acts.MCA is mounted on the external (not shown) of shell 20, and MCA passes through fluid pressure line (not shown) It is connected with CSC 51.MCA is acted on by motor and is established pressure to the oil liquid in fluid pressure line, by adjusting the oil in fluid pressure line The pressure of liquid can control the movement of the release bearing of CSC.MCA fast response time when carrying out control operation, low energy consumption.

Preferably, MCA is mounted on the outer wall of outer blocking portion 21, and internal resistance stopper 22 has the conduit substantially radially extended, The conduit is connected to the inside and outside of shell 20, and fluid pressure line is embedded in conduit.

Motor 30 is located in the second chamber 202.Motor 30 include stator 31 and positioned at stator 31 radial R inside rotor 32.Rotor 32 is torsionally connected with rotor flange 34, and rotor flange 34 is torsionally connected with central axis 10.Specifically, central axis One end of 10 close flexible disc component 60 is prominent to the outside of radial R and forms flange portion 11, rotor flange 34, central axis 10 Together with capable of being torsionally connected in flange portion 11 by pin with flexible disc component 60 this three.Rotor flange 34 is in radial R It is upper that CSC shell 511 is pivotally connected to by bearing.

Preferably, rotor flange 34 is equipped with the rotor portions of rotary transformer 8, and the stator department of rotary transformer 80 is installed on CSC shell 511.

More than, by the way that clutch 40 and motor 30 are separately positioned on the two sides on the axial A of internal resistance stopper 22, on the one hand So that size of the clutch 40 on radial R is not limited by motor 30, i.e., clutch 40 can be designed to have biggish Radial dimension is to have biggish maximum can bearing torque；On the other hand, clutch 40 and motor 30 are had on axial A Compartment of terrain separates, so that clutch 40 is greatly reduced due to influence of the heat generated to motor 30 that rub.

Next it is dynamic under four kinds of different operating modes P2 module according to the present embodiment to be introduced in conjunction with Fig. 3 to 6 Power transfer mode.These four operating modes are respectively as follows: (a) pure internal combustion engine drive mode, and (b) pure motor drive mode (c) mixes Drive mode and (d) recycle charge mode.

(a) pure internal combustion engine drive mode

Solid arrow in Fig. 3 shows the power transfer path of P2 module under pure internal combustion engine drive mode.In the work Under mode, executive module 50 control clutch 40 driven disc 42 engaged with the frictional disk of double mass flywheel 70 (hereinafter referred to as from Clutch is in engagement state).Since driven disc 42 and central axis 10 are torsionally connected, the torque that internal combustion engine generates successively is transferred to Double mass flywheel 70, driven disc 42, central axis 10 and flexible disc component 60, are ultimately transferred to the speed changer in downstream.

(b) pure motor drive mode

Dotted arrow in Fig. 4 shows the power transfer path of P2 module under pure motor drive mode.In the Working mould Under formula, clutch is in discrete state.The torque that the rotor 32 of motor 30 generates successively is transferred to rotor flange 34, central axis 10 With flexible disc component 60, it is ultimately transferred to the speed changer in downstream.

(c) combination drive mode

Solid arrow and dotted arrow in Fig. 5 respectively illustrate the power from internal combustion engine and the power from motor 30 Transmit the power transfer path of (i.e. combination drive) simultaneously in P2 module, the power transfer path under the operating mode is (a) The superposition of power transfer path under pure internal combustion engine drive mode and (b) pure motor drive mode.In this operating mode, clutch Device is in engagement state.The torque that internal combustion engine generates is transferred to central axis 10, motor via double mass flywheel 70 and driven disc 42 The torque that 30 rotor 32 generates is transferred to central axis 10 via rotor flange 34, this two parts power drives central axis 10 jointly Rotation, central axis 10 transfers a torque to flexible disc component 60 in turn, and is ultimately transferred to the speed changer in downstream.

(d) charge mode is recycled

Dash-dot arrows in Fig. 6 show the power transfer path of P2 module under recycling charge mode, the operating mode Under power transfer path it is opposite with the power transfer path under (b) pure motor drive mode.In this operating mode, central axis 10 driving torque passes to rotor 32 via rotor flange 34.The mechanical energy that transmitting comes can be converted to electric energy simultaneously by motor 30 It is stored by energy storage components such as batteries.

The part beneficial effect of above embodiment of the invention is briefly described below.

(i) clutch 40 and motor 30 are spaced apart on axial A, and by the internal resistance stopper 22 and CSC shell 511 of shell 20 Separate in two different chambers, the conduction this considerably reduce the heat of the friction generation of clutch 40 to motor 30, motor 30 are not easy to demagnetize because temperature is excessively high.

(ii) size of the clutch 40 on radial R is not influenced by the radial dimension of of motor 30, the size energy of friction plate It enough does greatly, make clutch 40 bears torque increase, and the thermal capacity of clutch 40 is big, the service life is long；On this basis, using root The vehicle start element such as the clutch in speed changer can be saved according to the power assembly of the P2 module of present embodiment, thus Reduce the size of power assembly in the axial direction.

(iii) CSC and MCA, which cooperates, constitutes the executive module 50 of clutch 40, and cost is relatively low and it for the components of MCA Fast response time, low energy consumption.Substantially radially R is embedded in interior blocking portion 22 fluid pressure line of connection MCA and CSC, has saved P2 The inner space of module.

(iv) each element of P2 module according to the present embodiment reasonable Arrangement, rotor flange in limited axial space 34 close to central axis 10 flange portion, enable rotor flange 34, central axis 10 and this three of flexible disc component 60 for example, by The connectors such as pin link together to transmit the torque from motor 30 and/or internal combustion engine.

(v) present embodiment is smaller to the change of each element of P2 module itself, such as MCA, CSC, clutch 40 and double Mass flywheel 70 can directly acquire from the prior art, so that the manufacturing cost of P2 module is low.

It should be appreciated that above embodiment is merely exemplary, it is not used in the limitation present invention.Those skilled in the art can be with Various modifications and changes are made to above embodiment under the teachings of the present invention, without departing from the scope of the present invention.Such as:

(i) double mass flywheel 70 in present embodiment can also be replaced by other dampers.

(ii) executive module 50 in present embodiment can also be such as CSC+ fluid pressure type actuator (Hydraulic Clutch Actuator, also abbreviation HCA), or be single use lever actuator (Lever Actuator, also referred to as LA) combination of CSC+MCA or CSC+HA is replaced.

Claims

1. a kind of hybrid power module, is used to be installed between internal combustion engine and speed changer, during the hybrid power module includes Mandrel (10), motor (30) and clutch (40), wherein

The central axis (10) is used to be connected via the clutch (40) with the internal combustion engine,

The motor (30) includes rotor (32) and rotor flange (34), and the rotor flange (34) and the rotor (32) are antitorque Ground connection, the rotor flange (34) are also torsionally connected with the central axis (10),

The clutch (40) is arranged in the axial direction of the central axis (10) at interval with the motor (30), the clutch Device (40) includes driven disc (42) and platen (41), and the driven disc (42) is torsionally connected with the central axis (10).

2. hybrid power module according to claim 1, which is characterized in that the clutch (40) and the motor (30) In the chamber different positioned at two.

3. hybrid power module according to claim 2, which is characterized in that the shell (20) of the hybrid power module wraps Outer blocking portion (21) and internal resistance stopper (22) are included, the outer blocking portion (21) is located at the radial outside of the hybrid power module simultaneously Each components of the hybrid power module are enclosed in the radially inner side of the outer blocking portion (21), the internal resistance stopper (22) It is connected with the outer blocking portion (21) and extends to the radially inner side of the hybrid power module, the internal resistance stopper (22) is by institute The inner space for stating shell (20) is separated into the described two different chambers separated in the axial direction.

4. hybrid power module according to claim 3, which is characterized in that the engagement of the clutch (40) or separation by The control of executive module (50), the executive module (50) include including concentric slave cylinders (51) and including concentric slave cylinders shell (511), institute It states including concentric slave cylinders shell (511) and is fixedly installed to the internal resistance stopper (22) and together will be described with the internal resistance stopper (22) The inner space of shell (20) is separated into described two different chambers.

5. hybrid power module according to claim 4, which is characterized in that the executive module (50) further includes modularization Clutch actuator, the modular clutch actuator is connected with the including concentric slave cylinders (51) by fluid pressure line, described Modular clutch actuator is used to adjust the pressure of the fluid pressure line inner fluid to drive the including concentric slave cylinders (51).

6. hybrid power module according to claim 3, which is characterized in that

The engagement of the clutch (40) or separation by executive module (50) control, the executive module (50) include with one heart from Dynamic cylinder (51) and modular clutch actuator, the modular clutch actuator and the including concentric slave cylinders (51) pass through liquid Pressure pipe road is connected, and drives the including concentric slave cylinders (51) for adjusting the pressure of the fluid pressure line inner fluid,

The conduit for accommodating the fluid pressure line is offered in the internal resistance stopper (22).

7. hybrid power module according to any one of claim 1 to 6, which is characterized in that the driven disc (42) exists The size radially of the central axis (10) is greater than the rotor (32) in the size radially.

8. hybrid power module according to any one of claim 1 to 6, which is characterized in that the central axis (10) One end is connected by the clutch (40) and double mass flywheel with the internal combustion engine, and the other end of the central axis (10) is to diameter It protrudes outward and is connected with the rotor flange (34).

9. hybrid power module according to any one of claim 1 to 6, which is characterized in that the rotor flange (34) It is connected by flexible disc component (60) with the speed changer.

10. a kind of hybrid vehicle comprising hybrid power module described in any one of claims 1 to 9.