Hybrid drive configuration for a motor vehicle

Patent metadata

Field	Value
Publication number	US-9387757-B2
Application number	US-201514730669-A
Country	US
Kind code	B2
Filing date	Jun 4, 2015
Priority date	Dec 10, 2012
Publication date	Jul 12, 2016
Grant date	Jul 12, 2016

Abstract

A hybrid drive configuration for a motor vehicle includes a first, a second, and a third planetary gear set. The web of the third planetary gear set is connected to an input shaft, wherein either the sun gear or the internal gear of the third planetary gear set is connected to the rotor of a first electric machine and correspondingly either the internal gear or the sun gear of the third planetary gear set is coupled via a brake to the transmission housing, or the sun gear of the third planetary gear set is coupled via the brake to the transmission housing, wherein either the web or the internal gear of the third planetary gear set is connected to the input shaft and correspondingly either the internal gear or the web of the third planetary gear set is connected to the web of the second planetary gear set.

First claim

What is claimed is:

1. A hybrid drive configuration for a motor vehicle, comprising:
a transmission housing;
a first and a second electric machine each having a rotor and each having a stator fixedly connected to said transmission housing, said first and said second electric machine each being operable both in a motor mode and in a generator mode and, by way of power electronics, being connectable to one another and to an electrical energy store;
an input shaft, which is connectable to an internal combustion engine, and an output shaft, which is connectable to a drivetrain output section;
a first brake and a second brake;
a first clutch and a second clutch;
a first planetary gear set having a sun gear, a web, and an internal gear, said sun gear of said first planetary gear set being connected to said rotor of said second electric machine, said web of said first planetary gear set being connected to said output shaft, and said internal gear of said first planetary gear set being coupled by way of said first brake to said transmission housing;
a second planetary gear set having a sun gear, a web, and an internal gear, said sun gear of said second planetary gear set being both coupled by way of said first clutch to said internal gear of said first planetary gear set and connected to said rotor of said first electric machine, said web of said second planetary gear set being coupled by way of said second clutch to said web of said first planetary gear set, and said internal gear of said second planetary gear set being connected to said input shaft; and
a third planetary gear set having a sun gear, a web, and an internal gear, said web of said third planetary gear set being connected to said input shaft, wherein
either said sun gear of said third planetary gear set or said internal gear of said third planetary gear set is connected to said rotor of said first electric machine, and
correspondingly either said internal gear of said third planetary gear or said sun gear of said third planetary gear set is coupled by way of said second brake to said transmission housing,

or
said sun gear of said third planetary gear set is coupled by way of said second brake to said transmission housing, wherein
either said web of said third planetary gear set or said internal gear of said third planetary gear set is connected to said input shaft, and
correspondingly either said internal gear of said third planetary gear set or said web of said third planetary gear set is connected to said web of said second planetary gear set.

2. The hybrid drive configuration according to claim 1 , including a third clutch, wherein said web of said first planetary gear set is coupled by way of said third clutch to said internal gear of said first planetary gear set.

3. The hybrid drive configuration according to claim 1 , including a third brake, wherein said rotor of said second electric machine is coupled by way of said third brake to said transmission housing.

4. The hybrid drive configuration according to claim 1 , including a further clutch, wherein said input shaft is coupled by way of said further clutch to said rotor of said second electric machine.

5. The hybrid drive configuration according to claim 2 , including a fourth clutch, wherein said input shaft is coupled by way of said fourth clutch to said rotor of said second electric machine.

6. The hybrid drive configuration according to claim 1 , wherein said input shaft and said output shaft are disposed axially adjacent one another, and respective attachment points of said input shaft and of said output shaft are situated at edges on opposite axial sides of the hybrid drive configuration.

7. The hybrid drive configuration according to claim 1 , wherein said output shaft is embodied as a hollow shaft extending coaxially around said input shaft.

8. The hybrid drive configuration according to claim 6 , wherein respective attachment points of said input shaft and of said output shaft are situated at an edge on a common axial side of the hybrid drive configuration.

Assignees

• Volkswagen Ag

Inventors

• Scholz Norbert

Classifications

• Y02T10/62

  Hybrid vehicles · CPC title

• F16H2037/107

  with switching means to provide three variator modes or ranges · CPC title

• F16H2200/201

  with three sets of orbital gears · CPC title

• F16H3/728

  with means to change ratio in the mechanical gearing · CPC title

• Y02T10/6239

  Cross-Sectional Technologies · mapped topic