Hybrid drive device for a motor vehicle

Patent metadata

Field	Value
Publication number	US-11794567-B2
Application number	US-201917282791-A
Country	US
Kind code	B2
Filing date	Sep 27, 2019
Priority date	Oct 5, 2018
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

A hybrid drive device for a motor vehicle with an internal combustion engine includes a first electric motor and a second electric motor. A transmission includes a first partial transmission connected to the first electric motor and a second partial transmission connected to the second electric motor, each being connectable to an output shaft. The internal combustion engine can selectively be uncoupled from the transmission or can be connected in a form-fit manner to the first or the second partial transmission. The first electric motor is connected at a constant gear ratio to a first drive shaft of the first partial transmission, and the second electric motor is connected at a constant gear ratio to a second drive shaft of the second partial transmission. The internal combustion engine can also be connected in a form-fit manner to the output shaft by way of a direct gear-change means.

First claim

The invention claimed is:

1. A hybrid drive device ( 1 ) for a motor vehicle, comprising:
an internal combustion engine ( 2 );
a first electric motor ( 4 );
a first pinion gear ( 6 ) arranged on a shaft of the first electric motor ( 4 );
a second electric motor ( 5 );
a second pinion gear ( 6 ′) arranged on shaft of the second electric motor ( 5 );
a transmission, comprising
a first partial transmission ( 9 ) having
a first drive shaft ( 7 ),
a first input gear ( 8 ) mounted on the first drive shaft ( 7 ),
a first small output gear ( 13 ), and
a first large output gear ( 14 ), the first small output gear ( 13 ) and the first large output gear ( 14 ) being selectively coupleable to the first drive shaft ( 7 ), and

a second partial transmission ( 9 ′) having
a second drive shaft ( 7 ′),
a second input gear ( 8 ′) mounted on second drive shaft ( 7 ′),
a second small output gear ( 13 ′), and

a second large output gear ( 14 ′), the second small output gear ( 13 ′) and the second large output gear ( 14 ′) being selectively coupleable to the second drive shaft ( 7 ′); and an output shaft ( 11 ) of the hybrid drive device ( 1 ), the output shaft ( 11 ) being
coupled to the first partial transmission ( 9 ) by a gear-wheel mesh with the first small output gear ( 13 ) and by a gear-wheel mesh with the first large output gear ( 14 ) and being

coupled to the second partial transmission ( 9 ′) by a gear-wheel mesh with the second small output gear ( 13 ′) and by a gear-wheel mesh with the second large output gear ( 14 ′), wherein at least two different transmission ratios between the two electric motors ( 4 , 5 ) and the output shaft ( 11 ) can be specified with the transmission,
wherein the first electric motor ( 4 ) is connected to the first partial transmission ( 9 ) by a gear-wheel mesh of the first pinion gear ( 6 ) with the first input gear ( 8 ), and
wherein the second electric motor ( 5 ) is connected to the second partial transmission ( 9 ′) by a gear-wheel mesh of the second pinion gear ( 6 ′) with the second input gear ( 8 ′), and
wherein the internal combustion engine ( 2 ) can be selectively uncoupled from the transmission or coupled to at least one partial transmission ( 9 , 9 ′), and
wherein the internal combustion engine ( 2 ) is connectable simultaneously to the first partial transmission ( 9 ) and to the second partial transmission ( 9 ′).

2. The hybrid drive device ( 1 ) according to claim 1 ,
wherein the internal combustion engine ( 2 ) is connectable either to the first partial transmission ( 9 ) or to the second partial transmission ( 9 ′).

3. The hybrid drive device ( 1 ) according to claim 1 ,
wherein the first electric motor ( 4 ) is connected at a constant gear ratio to the first drive shaft ( 7 ) of the first partial transmission ( 9 ), and
wherein the second electric motor ( 5 ) is connected at a constant gear ratio to the second drive shaft ( 7 ′) of the second partial transmission ( 9 ′).

4. The hybrid drive device ( 1 ) according to claim 3 ,
wherein the internal combustion engine ( 2 ) is connectable in a form-fit manner to the first drive shaft ( 7 ) of the first partial transmission ( 9 ) or to the second drive shaft ( 7 ′) of the second partial transmission ( 9 ′).

5. The hybrid drive device ( 1 ) according to claim 1 ,
wherein the first partial transmission ( 9 ) and the second partial transmission ( 9 ′) each make possible two different transmission ratios which can be specified selectively by means of a gear-change means ( 15 , 15 ′).

6. The hybrid drive device ( 1 ) according to claim 1 ,
wherein the internal combustion engine ( 2 ) is connectable to the output shaft ( 11 ) of the transmission in a form-fit manner with a direct gear-change means ( 12 ).

7. The hybrid drive device ( 1 ) according to claim 1 ,
wherein the internal combustion engine ( 2 ) can be selectively coupled directly to the output shaft ( 11 ).

8. The hybrid drive device ( 1 ) according to claim 1 ,
wherein the internal combustion engine ( 2 ) can be selectively coupled either
to the first partial transmission ( 9 ) by a gear-wheel mesh with the first input gear ( 8 ) or
to the second partial transmission ( 9 ′) by a gear-wheel mesh with the second input gear ( 8 ′).

9. The hybrid drive device ( 1 ) according to claim 1 ,
wherein the internal combustion engine ( 2 ) can be selectively coupled to the output shaft
without intermeshing gears by a sliding sleeve ( 16 ), or
by the first partial transmission ( 9 ) through a first gear-wheel mesh with the first input gear ( 8 ) and a second gear-wheel mesh with either the first small output gear ( 13 ) or the first large output gear ( 14 ), or
by the second partial transmission ( 9 ′) through a first gear-wheel mesh with the second input gear ( 8 ′) and a second gear-wheel mesh with either the second small output gear ( 13 ′) or the second large output gear ( 14 ′).

10. A hybrid drive device ( 1 ) for a motor vehicle, comprising:
an internal combustion engine ( 2 );
a first electric motor ( 4 );
a first pinion gear ( 6 ) arranged on a shaft of the first electric motor ( 4 );
a second electric motor ( 5 );
a second pinion gear ( 6 ′) arranged on shaft of the second electric motor ( 5 );
a transmission, comprising
a first partial transmission ( 9 ) having
a first drive shaft ( 7 ),
a first input gear ( 8 ) mounted on the first drive shaft ( 7 ),
a first small output gear ( 13 ), and
a first large output gear ( 14 ), the first small output gear ( 13 ) and the first large output gear ( 14 ) being selectively coupleable to the first drive shaft ( 7 ), and

a second partial transmission ( 9 ′) having
a second drive shaft ( 7 ′),
a second input gear ( 8 ′) mounted on second drive shaft ( 7 ′),
a second small output gear ( 13 ′), and

a second large output gear ( 14 ′), the second small output gear ( 13 ′) and the second large output gear ( 14 ′) being selectively coupleable to the second drive shaft ( 7 ′); and an output shaft ( 11 ) of the hybrid drive device ( 1 ), the output shaft ( 11 ) being
coupled to the first partial transmission ( 9 ) by a gear-wheel mesh with the first small output gear ( 13 ) and by a gear-wheel mesh with the first large output gear ( 14 ) and being

coupled to the second partial transmission ( 9 ′) by a gear-wheel mesh with the second small output gear ( 13 ′) and by a gear-wheel mesh with the second large output gear ( 14 ′), wherein at least two different transmission ratios between the two electric motors ( 4 , 5 ) and the output shaft ( 11 ) can be specified with the transmission,
wherein the first electric motor ( 4 ) is connected to the first partial transmission ( 9 ) by a gear-wheel mesh of the first pinion gear ( 6 ) with the first input gear ( 8 ), and
wherein the second electric motor ( 5 ) is connected to the second partial transmission ( 9 ′) by a gear-wheel mesh of the second pinion gear ( 6 ′) with the second input gear ( 8 ′), and
wherein the internal combustion engine ( 2 ) can be selectively uncoupled from the transmission or coupled to at least one partial transmission ( 9 , 9 ′), and
wherein the internal combustion engine ( 2 ) can be selectively coupled directly to the output shaft ( 11 ).

11. The hybrid drive device ( 1 ) according to claim 10 ,
wherein the internal combustion engine ( 2 ) is connectable either to the first partial transmission ( 9 ) or to the second partial transmission ( 9 ′).

12. The hybrid drive device ( 1 ) according to claim 10 ,
wherein the internal combustion engine ( 2 ) is connectable simultaneously to the first partial transmission ( 9 ) and to the second parti

Assignees

• Univ Darmstadt Tech

Inventors

• Rinderknecht Stephan
• Schleiffer Jean-Eric
• Viehmann Andreas

Classifications

• B60K6/547 Primary

  the transmission being a stepped gearing · CPC title

• B60K6/36

  characterised by the transmission gearings · CPC title

• B60K6/48

  Parallel type · CPC title

• F16H3/093

  with two or more countershafts · CPC title

• B60K6/387

  Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means · CPC title