Granted Patent B2

US 12,344,098 · App. 18/559,144 · Granted Jul 1, 2025

Inventors: Stefan Beck (Eriskirch, DE); Johannes Kaltenbach (Friedrichshafen, DE); Michael Wechs (Weißensberg, DE); Fabian Kutter (Kressbronn, DE); Thomas Martin (Weissensberg, DE); Martin Brehmer (Tettnang, DE); Max Bachmann (Friedrichshafen, DE); Peter Ziemer (Bad Woerishofen, DE); Christian Michel (Ravensburg, DE); Matthias Horn (Tettnang, DE); Mladjan Radic (Langenargen, DE); Ingo Pfannkuchen (Friedrichshafen, DE)

Assignee: ZF Friedrichshafen AG

B60K6/547B60K6/365B60K6/40B60K6/442F16H37/0806B60Y2200/92F16H2200/2005F16H2200/2043

Abstract

Claims (41)

1. A hybrid transmission device ( 1 ) for a motor vehicle ( 100 ), comprising:

a first transmission input shaft ( 2 ) for connecting an internal combustion engine ( 3 );

a second transmission input shaft ( 4 ) for connecting a rotor of a first electric machine ( 5 );

a superposition gear unit ( 6 ) arranged axially parallel to the first transmission input shaft ( 2 ) and to the second transmission input shaft ( 4 ), the superposition gear unit ( 6 ) configured for connecting the first electric machine ( 5 ), the superposition gear unit ( 6 ) comprising a first planetary gear set (P 1 ) with a sun gear (P 11 ), a ring gear (P 12 ), and a planet carrier (P 13 ) with planet gears (P 14 ) rotatably arranged thereon;

a gear reduction stage ( 7 ) comprising a first spur gear pair (ST 1 ) and a second spur gear pair (ST 2 ) for connecting the superposition gear unit ( 6 ) to a differential ( 8 ), wherein the differential ( 8 ) comprises a first axle shaft ( 9 a ) and a second axle shaft ( 9 b ), each of the first and second axle shafts ( 9 a , 9 b ) configured for connecting a wheel of the motor vehicle, wherein the second axle shaft ( 9 b ) extends axially at least through the superposition gear unit ( 6 );

a plurality of shift elements comprising a first shift element (A), a second shift element (B), and a third shift element (C) configured for implementing an electrodynamic driving-off process and a purely electric or hybridized drive of the motor vehicle, the first shift element (A), in the engaged condition, drivingly connecting the ring gear (P 12 ) or the sun gear (P 11 ) of the first planetary gear set (P 1 ) of the superposition gear unit ( 6 ) to the internal combustion engine ( 3 ); and

a multi-speed transmission ( 14 ) operatively connected on an input side to the first transmission input shaft ( 2 ) and on an output side to a countershaft ( 13 ) of the gear reduction stage ( 7 ).

2. The hybrid transmission device ( 1 ) of claim 1 , wherein the first transmission input shaft ( 2 ) is operatively connected to the first shift element (A) at least via a first traction mechanism ( 36 ) or via at least a first intermediate gear.

3. The hybrid transmission device ( 1 ) of claim 1 , wherein the second transmission input shaft ( 4 ) is operatively connected at least via a second traction mechanism ( 37 ) and/or via at least a first intermediate gear to the sun gear (P 11 ) or to the ring gear (P 12 ) of the first planetary gear set (P 1 ) of the superposition gear unit ( 6 ).

4. The hybrid transmission device ( 1 ) of claim 1 , wherein the planet carrier (P 13 ) of the superposition gear unit ( 6 ) is operatively connected to the second spur gear pair (ST 2 ) of the gear reduction stage ( 7 ).

5. The hybrid transmission device ( 1 ) of claim 1 , wherein two of the first, second, and third shift elements (A, B, C) are formed as a double shift unit (DS).

6. The hybrid transmission device ( 1 ) of claim 1 , wherein at least two of the first, second, and third shift elements (A, B, C) are arranged axially between a point of connection of the first transmission input shaft ( 2 ) and the first planetary gear set (P 1 ) of the superposition gear unit ( 6 ).

7. The hybrid transmission device ( 1 ) of claim 1 , wherein a point of connection of the first transmission input shaft ( 2 ) is arranged axially between at least two of the first, second, and third shift elements (A, B, C) and the first planetary gear set (P 1 ) of the superposition gear unit ( 6 ).

8. The hybrid transmission device ( 1 ) of claim 1 , further comprising a third transmission input shaft ( 10 ) for connecting a rotor of a second electric machine ( 11 ), wherein the third transmission input shaft ( 10 ) is operatively connected or operatively connectable to the first transmission input shaft ( 2 ).

9. A motor vehicle ( 100 ), comprising the internal combustion engine ( 3 ) and the hybrid transmission device ( 1 ) of claim 1 , wherein the internal combustion engine ( 3 ) is arranged axially parallel to the first electric machine ( 5 ) of the hybrid transmission device ( 1 ).

10. A hybrid transmission device ( 1 ) for a motor vehicle ( 100 ), comprising:

a first transmission input shaft ( 2 ) for connecting an internal combustion engine ( 3 );

a second transmission input shaft ( 4 ) for connecting a rotor of a first electric machine ( 5 );

a superposition gear unit ( 6 ) arranged axially parallel to the first transmission input shaft ( 2 ) and to the second transmission input shaft ( 4 ), the superposition gear unit ( 6 ) configured for connecting the first electric machine ( 5 ), the superposition gear unit ( 6 ) comprising a first planetary gear set (P 1 ) with a sun gear (P 11 ), a ring gear (P 12 ), and a planet carrier (P 13 ) with planet gears (P 14 ) rotatably arranged thereon;

a gear reduction stage ( 7 ) comprising a first spur gear pair (ST 1 ) and a second spur gear pair (ST 2 ) for connecting the superposition gear unit ( 6 ) to a differential ( 8 ), wherein the differential ( 8 ) comprises a first axle shaft ( 9 a ) and a second axle shaft ( 9 b ), each of the first and second axle shafts ( 9 a , 9 b ) configured for connecting a wheel of the motor vehicle, wherein the second axle shaft ( 9 b ) extends axially at least through the superposition gear unit ( 6 );

a plurality of shift elements comprising a first shift element (A), a second shift element (B), and a third shift element (C) configured for implementing an electrodynamic driving-off process and a purely electric or hybridized drive of the motor vehicle, the second shift element (B), in the engaged condition, connecting the ring gear (P 12 ) of the first planetary gear set (P 1 ) of the superposition gear unit ( 6 ) or the sun gear (P 11 ) of the first planetary gear set (P 1 ) of the superposition gear unit ( 6 ) to a housing (G); and

a multi-speed transmission ( 14 ) operatively connected on an input side to the first transmission input shaft ( 2 ) and on an output side to a countershaft ( 13 ) of the gear reduction stage ( 7 ).

11. A motor vehicle ( 100 ), comprising the internal combustion engine ( 3 ) and the hybrid transmission device ( 1 ) of claim 10 , wherein the internal combustion engine ( 3 ) is arranged axially parallel to the first electric machine ( 5 ) of the hybrid transmission device ( 1 ).

12. A hybrid transmission device ( 1 ) for a motor vehicle ( 100 ), comprising:

a first transmission input shaft ( 2 ) for connecting an internal combustion engine ( 3 );

a second transmission input shaft ( 4 ) for connecting a rotor of a first electric machine ( 5 );

a superposition gear unit ( 6 ) arranged axially parallel to the first transmission input shaft ( 2 ) and to the second transmission input shaft ( 4 ), the superposition gear unit ( 6 ) configured for connecting the first electric machine ( 5 ), the superposition gear unit ( 6 ) comprising a first planetary gear set (P 1 ) with a sun gear (P 11 ), a ring gear (P 12 ), and a planet carrier (P 13 ) with planet gears (P 14 ) rotatably arranged thereon;

a gear reduction stage ( 7 ) comprising a first spur gear pair (ST 1 ) and a second spur gear pair (ST 2 ) for connecting the superposition gear unit ( 6 ) to a differential ( 8 ), wherein the differential ( 8 ) comprises a first axle shaft ( 9 a ) and a second axle shaft ( 9 b ), each of the first and second axle shafts ( 9 a , 9 b ) configured for connecting a wheel of the motor vehicle, wherein the second axle shaft ( 9 b ) extends axially at least through the superposition gear unit ( 6 ); and

a plurality of shift elements comprising a first shift element (A), a second shift element (B), and a third shift element (C) configured for implementing an electrodynamic driving-off process and a purely electric or hybridized drive of the motor vehicle, the third shift element (C) being configured for interlocking the first planetary gear set (P 1 ) of the superposition gear unit ( 6 ).

13. A motor vehicle ( 100 ), comprising the internal combustion engine ( 3 ) and the hybrid transmission device ( 1 ) of claim 12 , wherein the internal combustion engine ( 3 ) is arranged axially parallel to the first electric machine ( 5 ) of the hybrid transmission device ( 1 ).

14. The hybrid transmission device ( 1 ) of claim 12 , wherein a multi-speed transmission ( 14 ) is operatively connected on an input side to the first transmission input shaft ( 2 ) and on an output side to a countershaft ( 13 ) of the gear reduction stage ( 7 ).

15. A hybrid transmission device ( 1 ) for a motor vehicle ( 100 ), comprising:

a first transmission input shaft ( 2 ) for connecting an internal combustion engine ( 3 );

a second transmission input shaft ( 4 ) for connecting a rotor of a first electric machine ( 5 );

a superposition gear unit ( 6 ) arranged axially parallel to the first transmission input shaft ( 2 ) and to the second transmission input shaft ( 4 ), the superposition gear unit ( 6 ) configured for connecting the first electric machine ( 5 ), the superposition gear unit ( 6 ) comprising a first planetary gear set (P 1 ) with a sun gear (P 11 ), a ring gear (P 12 ), and a planet carrier (P 13 ) with planet gears (P 14 ) rotatably arranged thereon;

a gear reduction stage ( 7 ) comprising a first spur gear pair (ST 1 ) and a second spur gear pair (ST 2 ) operatively connecting the superposition gear unit ( 6 ) to a differential ( 8 ), wherein the differential ( 8 ) comprises a first axle shaft ( 9 a ) and a second axle shaft ( 9 b ), each of the first and second axle shafts ( 9 a , 9 b ) configured for connecting a wheel of the motor vehicle, wherein the second axle shaft ( 9 b ) extends axially at least through the superposition gear unit ( 6 );

a plurality of shift elements comprising a first shift element (A), a second shift element (B), and a third shift element (C) configured for implementing an electrodynamic driving-off process and a purely electric or hybridized drive of the motor vehicle; and

a gear change transmission ( 2 ) arranged axially parallel to the first transmission input shaft ( 2 ), wherein the gear change transmission ( 12 ) comprises a third spur gear pair (ST 3 ) and a fourth shift element (D) for shifting the hybrid transmission device ( 1 ) between at least two gear steps.

16. The hybrid transmission device ( 1 ) of claim 15 , wherein the gear change transmission ( 12 ) comprises a fifth shift element (E) for shifting the hybrid transmission device ( 1 ) between at least three gear steps.

17. A motor vehicle ( 100 ), comprising the internal combustion engine ( 3 ) and the hybrid transmission device ( 1 ) of claim 15 , wherein the internal combustion engine ( 3 ) is arranged axially parallel to the first electric machine ( 5 ) of the hybrid transmission device ( 1 ).

18. The hybrid transmission device ( 1 ) of claim 15 , wherein a multi-speed transmission ( 14 ) is operatively connected on an input side to the first transmission input shaft ( 2 ) and on an output side to a countershaft ( 13 ) of the gear reduction stage ( 7 ).

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (26)