阅读说明：本技术 用于机动车的混动模块以及动力总成 (Hybrid module for motor vehicle and power assembly ) 是由 弗洛里安·纳赫特曼 于 2020-03-24 设计创作，主要内容包括：本发明涉及一种用于耦联内燃机以及变速器的用于机动车的混动模块以及一种用于机动车的动力总成,包括根据本发明的混动模块。用于耦联内燃机以及变速器的用于机动车的混动模块(1)包括：具有转子(11)的电机(10),其中所述转子(11)设置在转子承载件(13)上；以及构成为多盘式离合器的离合器装置(20),其中所述离合器装置(20)的压板(30)和中间板(40)经由板簧(23,24)与所述转子承载件(13)机械连接,以便用弹簧力沿轴向方向加载相应的板(30,40)。借助根据本发明的混动模块以及配设有其的动力总成可以在成本适宜的设计方案中确保长的使用寿命。(The invention relates to a hybrid module for a motor vehicle for coupling an internal combustion engine and a transmission, and to a drive train for a motor vehicle, comprising a hybrid module according to the invention. Hybrid module (1) for a motor vehicle for coupling an internal combustion engine and a transmission, comprising: an electric machine (10) having a rotor (11), wherein the rotor (11) is arranged on a rotor carrier (13); and a clutch device (20) designed as a multi-disk clutch, wherein a pressure plate (30) and an intermediate plate (40) of the clutch device (20) are mechanically connected to the rotor carrier (13) via leaf springs (23, 24) in order to apply a spring force to the respective plate (30, 40) in the axial direction. With the hybrid module according to the invention and the drive train equipped therewith, a long service life can be ensured in a cost-effective design.)

1. Hybrid module (1) for a motor vehicle for coupling an internal combustion engine and a transmission, having: an electric machine (10) having a rotor (11), wherein the rotor (11) is arranged on a rotor carrier (13); and a clutch device (20) designed as a multi-disk clutch, wherein a pressure plate (30) and an intermediate plate (40) of the clutch device (20) are mechanically connected to the rotor carrier (13) via leaf springs (23, 24) in order to apply a spring force to the respective plate (30, 40) in the axial direction.

2. The hybrid module (1) of claim 1,

it is characterized in that the preparation method is characterized in that,

leaf springs (23, 24) connecting the plates (30, 40) to the rotor carrier (13) are arranged in an alternating manner on substantially the same circumference of the rotor carrier (13).

3. The mixing module (1) according to one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the intermediate plate (40) comprises at least one contact means (43) for contacting a leaf spring (23) connecting the rotor carrier (13) to the pressure plate (30).

4. The hybrid module (1) of claim 3,

it is characterized in that the preparation method is characterized in that,

the axial length of the abutment device (43) is adjustable in order to adjust the axial distance between the intermediate plate (40) and the pressure plate (30).

5. The mixing module (1) according to any of claims 3 and 4,

it is characterized in that the preparation method is characterized in that,

the bearing device (43) and the leaf spring (23) bearing thereon are arranged between the pressure plate (30) and the rotor support (13) in such a way that the bearing device (43) bears on the leaf spring (23) essentially at half the distance between the mechanical fastening of the leaf spring (23) to the pressure plate (30) and the mechanical fastening of the leaf spring (23) to the rotor support (13).

6. Hybrid module (1) according to claim 5,

it is characterized in that the preparation method is characterized in that,

the mechanical connection between the rotor carrier (13) and the plates (30, 40) is effected radially outside the radially inner side of the rotor (11).

7. Hybrid module (1) according to claim 5,

it is characterized in that the preparation method is characterized in that,

the mechanical connection between the rotor carrier (13) and the plates (30, 40) is realized radially within a space enclosed by a stator (12) of the electrical machine (10).

8. The mixing module (1) according to one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the intermediate plate (40) has a recess (42) at its radially outer edge (33) for the passage of a pulling anchor (31) of the pressure plate (30).

9. The mixing module (1) according to one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the plates (30, 40) and the friction plates (22) of the clutch device (20) are arranged at least partially within a space (16) radially enclosed by the rotor carrier (13).

10. Drive assembly for a motor vehicle, comprising a hybrid module (1) according to at least one of claims 1 to 9 and a drive device, in particular an internal combustion engine, and a transmission, wherein the hybrid module (1) is connected on the input side (3) to the drive device and on the output side (4) to the transmission.

Technical Field

The invention relates to a hybrid module for a motor vehicle for coupling an internal combustion engine and a transmission, and to a drive train for a motor vehicle, comprising a hybrid module according to the invention.

Background

Hybrid modules for mechanically coupling an internal combustion engine and a transmission are known from the prior art. This hybrid module includes: a clutch device, by means of which torque can be transmitted from the internal combustion engine to the hybrid module and by means of which the hybrid module can be decoupled from the internal combustion engine; and a motor having a rotor for generating a driving torque. The electric machine enables electric driving, power augmentation for the operation of the internal combustion engine and energy recovery. The clutch device and its actuating system are used for coupling or uncoupling an internal combustion engine.

For an axially compact design, it is known to provide the clutch device at least partially axially within the electric machine, in particular within a space enclosed by the rotor or the rotor carrier of the electric machine.

The clutch device is usually designed as a friction clutch, wherein it comprises at least one counter plate and a pressure plate. The counter pressure plate is fixedly connected with a rotor bearing piece of the motor, which bears the rotor. The pressure plate is likewise connected to the rotor carrier, but has a degree of freedom in the axial direction in order to open and close the clutch device.

For the axial movement, the pressure plate has a first side of the toothing and the rotor carrier has a second side of the toothing, which is complementary to the first side, wherein the toothing of the pressure plate is movable along the toothing of the rotor carrier so that the pressure plate is movable relative to the rotor carrier.

When the clutch device of the hybrid module according to the prior art is actuated, friction between the teeth of the pressure plate and the rotor carrier therefore occurs. From which a lower contact pressure is obtained during the actuation. Furthermore, friction occurs in the toothing by the movement.

Disclosure of Invention

The invention is based on the object of providing a hybrid module and a drive train equipped therewith, which ensure long-term operation in a cost-effective design.

This object is achieved by a mixing module according to the invention according to claim 1. Advantageous embodiments of the mixing module emerge from the dependent claims 2 to 9. In addition, a drive train for a motor vehicle is proposed according to claim 10, which has a hybrid module.

The features of the claims can be combined in any technically meaningful way and in any technically meaningful way, wherein the features set forth in the description below and in the drawings can also be considered, which comprise additional embodiments of the invention.

The terms axial, radial and circumferential direction always relate to the axis of rotation of the hybrid module or clutch device within the scope of the invention.

The invention relates to a hybrid module for a motor vehicle for coupling an internal combustion engine and a transmission, comprising: an electric machine with a rotor, wherein the rotor is arranged on a rotor carrier; and a clutch device having a multi-disc clutch. The pressure plate and the intermediate plate of the clutch device are connected to the rotor carrier via leaf springs for loading the respective plate in the axial direction with a spring force.

Furthermore, a leaf spring is provided for transmitting a torque from the rotor carrier to the plate and also in the opposite direction.

That is to say, the plate is constructed without radially oriented teeth and can be moved axially without overcoming the friction forces in the teeth. The plate here comprises a corresponding number of axially and/or radially extending pulling anchors for the purpose of connecting the leaf spring.

Likewise, the rotor carrier has a corresponding number of webs or flanges for connecting the leaf springs.

The multi-disk clutch can preferably be designed as a twin-disk clutch.

The clutch device can perform multiple functions, wherein the clutch device is not only used for a clutch process during the starting of a motor vehicle equipped with the hybrid module according to the invention, but is also provided for coupling and decoupling an internal combustion engine from a drive train of a motor vehicle equipped with the hybrid module according to the invention.

By the possibility of using the clutch device as a starting clutch and as a separating clutch, additional clutch devices, such as, for example, separating clutches, can be dispensed with correspondingly.

According to a further aspect of the invention, leaf springs connecting the plates with the rotor carrier are arranged in an alternating manner on substantially the same circumference of the rotor carrier.

That is to say, the leaf springs of the first set of leaf springs connect the pressure plate to the rotor carrier and are adjacent in the circumferential direction to the leaf springs of the second set of leaf springs, which connect the intermediate plate to the rotor carrier.

The leaf springs of the first group of leaf springs are configured differently from the leaf springs of the second group of leaf springs. For example, the leaf springs may have different lengths in the circumferential direction or different lengths tangential to the circumferential direction.

According to a further advantageous embodiment, the intermediate plate comprises at least one abutment means for abutment against a leaf spring connecting the rotor carrier to the pressure plate.

Preferably, three such abutment devices are provided distributed over the circumference of the rotor carrier.

In a further embodiment of the invention, the axial length of the abutment device is adjustable in order to adjust the axial distance between the intermediate plate and the pressure plate.

The abutment device can be designed as a screw, wherein the axial distance is adjusted correspondingly via the length of the screw or the axial position of the screw in its fastening.

In particular, it is proposed that the adjustment of the axial distance between the intermediate plate and the pressure plate only takes effect in a path-limiting manner in the open position of the clutch device. The axial distance between the intermediate plate and the pressure plate remains unaffected by the adjusted axial length of the abutment device in the closed position of the clutch device.

The contact means and the leaf spring contacting the contact means can be arranged between the pressure plate and the rotor carrier such that the contact means contacts the leaf spring essentially at half the distance between the mechanical fastening of the leaf spring at the pressure plate and the mechanical fastening of the leaf spring at the rotor carrier.

This results in the intermediate plate, when the clutch is closed or open, only moving on a path that is half as large as the corresponding path of the pressure plate.

Advantageously, the mechanical connection between the rotor carrier and the plate is effected radially outside the radially inner side of the rotor.

In particular, it can be provided that the mechanical connection between the rotor carrier and the plate is also realized on the axial side between the rotor and the input side of the hybrid module. The input side of the hybrid module can be formed, for example, by a damper unit. The mechanical connection is preferably realized here directly axially next to the rotor of the electric machine.

Furthermore, the mechanical connection between the rotor carrier and the plate can be realized radially within the space enclosed by the stator of the electrical machine.

In particular, it can be provided that the mechanical connection between the rotor support and the plate is realized radially inside the stator of the electric machine and radially outside the rotor support.

According to another embodiment, the intermediate plate has a recess on its radially outer edge for the passage of the pulling anchor of the pressure plate. The recess is effective in particular with regard to the radial installation space requirement.

In a further aspect of the hybrid module, the plates and the friction plates of the clutch device are arranged at least partially within a space radially enclosed by the rotor carrier.

That is to say, some of the friction disks or plates of the clutch device can be arranged within the space radially enclosed by the rotor carrier, wherein other friction disks or plates of the clutch device are arranged outside said space.

The hybrid module can furthermore comprise an actuation system for actuating the clutch by applying an axially acting force to the pressure plate.

By mounting the movable plate of the clutch device via a leaf spring, the use of plug-in toothing can be dispensed with, as a result of which wear occurring in such toothing and heat occurring in the toothing during the actuation of the clutch device can be completely avoided. The hybrid module according to the invention has the advantage of low wear and thus a long service life.

The use of a multiple disk clutch results in a distribution of the frictional heat occurring by the use of a plurality of friction surfaces and thus a lower local heat load. Despite the presence of a plurality of matching plates and associated friction linings, a reliable opening of the clutch device is ensured by the coupling according to the invention via the leaf spring.

Furthermore, according to the invention, a drive train for a motor vehicle is provided, having a hybrid module according to the invention, a drive device, in particular an internal combustion engine, and a transmission, wherein the hybrid module is connected on the input side to the drive device and on the output side to the transmission.

Drawings

The invention described above is explained in more detail below in the context of the relevant art with reference to the accompanying drawings, which show preferred embodiments. The invention is not limited in any way by the purely schematic view, wherein it is to be noted that the embodiments shown in the figures are not limited to the dimensions shown. In which is shown:

figure 1 shows a perspective view of a pressure plate of the clutch device,

figure 2 shows a perspective view of the intermediate plate of the clutch device,

figure 3 shows a front view of the clutch device,

figure 4 shows a side view of the motor rotor together with an integrated clutch device on the rotor carrier,

figure 5 shows a first cut-away side view of a mixing module according to the invention,

FIG. 6 shows a second cut-away side view of a hybrid module according to the invention, an

Fig. 7 shows a third cut-away side view of a hybrid module according to the invention.

Detailed Description

Fig. 1 shows a perspective view of a pressure plate 30 of a clutch device for a hybrid module according to the invention. The pressure plate 30 comprises three tension anchors 31 distributed at regular intervals around the circumference for connection to a rotor carrier of the electric machine, not shown here, via leaf springs. The respective pulling anchor 31 extends from a radially outer edge 33 of the pressure plate 30 in the axial direction away from the pressure plate 30 by means of an axial section 32 and then radially outward.

Fig. 2 shows a perspective view of an intermediate plate 40 of a clutch device for a hybrid module according to the invention. The intermediate plate 40, like the pressure plate in fig. 1, comprises three tension anchors 41, wherein the intermediate plate 40 furthermore has three receiving elements 45 and three recesses 42.

The pulling anchors 41 are arranged distributed at regular intervals around the circumference on the radially outer edge 36 of the intermediate plate 40 and extend substantially radially outwards. A recess 42 extending radially inwards and a receiving element 45 extending substantially radially outwards are likewise provided on the radially outer edge 36 of the intermediate plate 40. The pulling anchor 41, the receiving element 45 and the recess 42 of the intermediate plate 40 are each arranged circumferentially in the stated order. As already explained for the tension anchor of the pressure plate in fig. 1, the tension anchor 41 of the intermediate plate 40 serves for a connection, not shown here, to the rotor carrier of the electric machine via a leaf spring. The receiving element 45 is part of an abutment device 43 for abutment against a leaf spring connecting the rotor carrier to the pressure plate. The recess 42 serves for the passage of the pulling anchor of the pressure plate when the pressure plate and the intermediate plate 40 are arranged coaxially and axially adjacent to one another.

Fig. 3 shows a front view of a clutch device 20 designed as a two-disk clutch, comprising a pressure plate 30 according to fig. 1, an intermediate plate 40 according to fig. 2, a counter-pressure plate 21 and a first and a second set of leaf springs 23, 24.

The counter pressure plate 21 covers the pressure plate 30 or the intermediate plate 40 as far as possible here, so that only its pulling anchors 31, 41 or the receiving elements 45 are visible here.

It can be seen here that the pull anchors 31 of the pressure plate 30 are each connected via the leaf springs 23 of the first group of leaf springs to a web 17 of the rotor carrier 13 of the electric motor (not shown), and the pull anchor 41 of the intermediate plate 40 is connected via the leaf springs 24 of the second group of leaf springs to another web 17 of the rotor carrier 13 of the electric motor. The abutment 43 of the intermediate plate 40 rests here on the leaf spring 23 of the first group of leaf springs which connects the pressure plate 30 to the rotor carrier 13.

The mechanical connection between the pulling anchors 31, 41 or the receiving element 45 and the webs 17 and the leaf springs 23, 24 is realized by means of connecting bolts 47, such as, for example, rivets.

In addition to fig. 3, fig. 4 now shows a side view of the rotor 11 of the electric machine 10 on the rotor carrier 13 together with the integrated clutch device 20.

The rotor 11 is arranged here for rotation about the axis of rotation 2 on a rotatable rotor carrier 13.

In this case, it is clear from the side view that the bearing means 43 and the leaf spring 23 bearing thereon are arranged between the pressure plate 30 and the rotor carrier 13 in such a way that the bearing means 43 bears on the leaf spring 23 by means of a bearing pin 44 arranged in a receiving element 45 essentially at half the distance between the connection of the leaf spring 23 to the pressure plate 30 and the connection of the leaf spring 23 to the rotor carrier 13.

It can also be seen that the mechanical connection between the rotor carrier 13 and the plates 30, 40 is realized via leaf springs 23, 24 radially outside the rotor carrier 13 and axially beside the rotor 11 of the electric machine 10.

The rotor carrier 13 of the electric machine 10 furthermore comprises a recess 18 through which the pulling anchors 31, 41 or the receiving elements 45 of the pressure plate 30 and of the intermediate plate 40 pass for the connection on the rotor carrier 13 that is realized radially outside the rotor carrier 13, and in which recess the plates 30, 40 can be moved axially for opening or closing the clutch device 20.

Fig. 5 shows a first sectional side view of a hybrid module 1 according to the invention.

The hybrid module 1 comprises an input shaft 50, a clutch device 20 according to fig. 3 and 4, an electric motor 10, a driven shaft 54 and a housing 60.

When the hybrid module 1 is integrated into a drive train of a motor vehicle, the input shaft 50 serves on the input side 3 of the hybrid module 1 for coupling the hybrid module 1 to an internal combustion engine of the drive train, and the output shaft 54 serves on the output side 4 of the hybrid module 1 for coupling the hybrid module 1 to a transmission unit of the drive train.

The coupling between the internal combustion engine and the input shaft 50 is realized here via a damper unit 52 which is arranged on the axial side of the input shaft 50 facing the internal combustion engine and is connected to the input shaft 50 on the input side 3 of the hybrid module 1 and serves as a damper.

The input shaft 50 is connected in a rotationally fixed manner to two friction disks 22 as input elements of the clutch device 20. According to fig. 3 and 4, the clutch device 20 comprises a pressure plate 30, an intermediate plate 40 and a counter plate 21, wherein the counter plate 21 is directly fixedly connected to the rotor carrier 13 of the electric machine 10 in the radial and axial directions. The pressure plate 30 and the intermediate plate 40 are connected to the rotor carrier 13 of the electric machine 10 in an axially displaceable manner, as shown in fig. 3 and 4. The friction plates 22 are each arranged axially between the intermediate plate 40 and one of the two further plates 21, 30. The cross-sectional stretching is performed in fig. 5 through the pull anchor 31 of the pressure plate 30. It can be seen that the axial section 32 of the tension anchor 31 of the pressure plate 30 extends radially between the friction plate 22 or intermediate plate 40 and the rotor carrier 13. Subsequently, the pulling anchor 31 of the pressure plate 30 extends radially outward through the recess 18 in the rotor carrier 13 and is connected by means of the connecting bolt 47 with the leaf springs 23 of the first set of leaf springs for connection to the rotor carrier 13.

The clutch device 20, i.e. the plates 21, 30, 40 and the friction disks 22, are arranged in the space 16 radially enclosed by the rotor carrier 13, i.e. radially between the input shaft 50 and the rotor carrier 13. The rotor 11 of the electric machine 10 is arranged on the rotor carrier 13, wherein the stator 12 of the electric machine 10 is fixedly connected to the housing 60. The rotor carrier 13 is supported for rotation of the rotor 11 about the rotational axis 2 of the hybrid module 1 by means of the axial rotor carrier sections 15 of the radially inwardly extending support sections 14 via support bearings 71 on the wall sections 62 of the housing wall 61 of the housing 60.

The input shaft 50 is supported radially on the outside on a support sleeve 51 via a rolling bearing 70 designed as a double-row ball bearing, wherein the support sleeve 51 is supported axially on the axial rotor carrier section 15 radially on the inside of the input shaft 50.

The input shaft 50 is thus indirectly supported on the housing 60 in the radial direction via the support sleeve 51 and the rotor carrier 13 and via the bearings 70, 71. The housing wall 61 extends in the radial direction on the side of the hybrid module 1 facing the transmission unit and the wall section 62 extends from the radially inner end of the housing wall 61 in the axial direction partially between the rotor carrier 13 and the driven shaft 54 to accommodate bearings 70, 71 for supporting the rotor carrier 13 and the input shaft 50.

For opening or closing the clutch device 20, the hybrid module 1 furthermore comprises an actuating system 53, which is designed as an annular piston-cylinder unit and is arranged on the housing wall 61 or the wall section 62. The actuating system 53 is arranged in the axial direction on the side of the rotor carrier 13 opposite the clutch device 20 or on the side of the support section 14 of the rotor carrier 13 opposite the clutch device. For actuating the clutch device 20, the actuating system 53 passes through the rotor carrier 13 or the support section 14 of the rotor carrier 13 in the axial direction.

Radially inside, the output shaft 54 is coupled in a rotationally fixed manner to the axial rotor carrier section 15 of the rotor carrier 13, wherein the output shaft 54 as the output side 4 of the hybrid module 1 extends radially inside a wall section 62 of a housing wall 61 of the housing 60.

The torque provided by the internal combustion engine is thus transmitted via the damper unit 52 to the input shaft 50 and thus to the friction plates 22 of the clutch device 20. When the clutch device 20 is closed, the torque of the internal combustion engine is further transmitted via the plates 21, 22, 30, 40 to the rotor carrier 13, wherein the torque is then transmitted via the output shaft 10 to the input of the transmission and is used by the electric machine 10 in generator operation.

In the opposite direction, the connected internal combustion engine can be started in operation of the electric machine 10.

When the clutch device 20 is open, the torque provided by the electric machine 10 alone is transmitted via the rotor carrier 13 to the output shaft 10, and conversely the electric machine 10 is operated in the energy recovery mode.

Fig. 6 shows a second sectional side view of the mixing module 1 according to the invention.

In contrast to the section of the first sectional side view in fig. 5, the section of the second sectional side view of the hybrid module 1 according to the invention here runs through the pulling anchor 41 of the intermediate plate 40.

It can be seen that the pulling anchor 41 extends radially outward through the recess 18 in the rotor carrier 13 and is connected by means of a connecting bolt 47 with the leaf springs 24 of the second set of leaf springs for connection to the rotor carrier 13.

Fig. 7 shows a third cut-away side view of the mixing module 1 according to the invention.

The section extends through the receiving element 45 or the abutment pin 44 of the abutment device 43 of the intermediate plate 40.

It can be seen that the receiving element 45 extends radially outward through the recess 18 in the rotor carrier 13. The abutment pin 44 is arranged in the receiving element 45 and extends in the axial direction for abutment against the leaf spring 23 of the first set of leaf springs.

The intermediate plate 40 is therefore supported in the axial direction via the bearing means 43 on the leaf springs 23 of the first set of leaf springs, which connect the pressure plate 30 and the rotor carrier 13. As already shown in fig. 4, the abutment 43 is here arranged on the leaf spring 23 at half the distance between the connection of the leaf spring 23 to the pressure plate 30 and the connection of the leaf spring 23 to the rotor carrier 13.

This results in the intermediate plate 40, when the pressure plate 30 is moved in the axial direction, only moving on a path that is half as large as the corresponding path of the pressure plate 30.

It is therefore clear from fig. 3 to 7 that, when the clutch device 20 is opened, the pressure plate 30 is moved in the axial direction away from the friction lining 22 pressed against it, up to its maximum open position defined by the radial sections of the rotor carrier 13.

The intermediate plate 40 is likewise moved in the axial direction away from the friction linings 22 pressed against it, wherein the maximum open position of the intermediate plate 40 is defined by the contact of the contact means 43 on the leaf springs 23 of the first set of leaf springs, which connect the pressure plate 30 to the rotor carrier 13.

By means of the abutment device 43 or by means of the length of the abutment pins 44 or the arrangement in the receiving element 45, it can be ensured that the intermediate plate 40 and the pressure plate 30 have the same axial distance from the respective friction disk 22, which they press against in the closed position, in the open position of the clutch device 20, so that it is ensured that the clutch device 20 opens the torque transmission path consistently and reliably.

With the hybrid module according to the invention and the drive train equipped therewith, a long service life can be ensured in a cost-effective design.

Description of the reference numerals

1 mixing module

2 axis of rotation

3 input side of the hybrid module

4 output side of the hybrid module

10 electric machine

11 rotor

12 stator

13 rotor carrier

14 support section of rotor carrier

15 axial rotor carrier section

16 space radially enclosed

17 Tab of rotor carrier

18 recess

20 Clutch device

21 counter pressure plate

22 friction plate

23 leaf spring of the first set of leaf springs

24 leaf spring of the second set of leaf springs

30 pressing plate

31-platen pull anchor

32-platen axial segment of a pulling anchor

33 radially outer edge of the pressure plate

40 middle plate

41 pulling anchor of intermediate plate

42 space part

43 attaching device

44 abutting bolt

45 receiving element

46 radially outer edge of the intermediate plate

47 connecting bolt

50 input shaft

51 support sleeve

52 shock absorber unit

53 operating system

54 driven shaft

60 case

61 casing wall

62 wall section

70 rolling bearing

71 support bearing