Electric drive device for a motor vehicle, in particular for a motor car

Patent metadata

Field	Value
Publication number	US-12253152-B2
Application number	US-202218724332-A
Country	US
Kind code	B2
Filing date	Dec 14, 2022
Priority date	Jan 3, 2022
Publication date	Mar 18, 2025
Grant date	Mar 18, 2025

Abstract

An electric drive device includes a transmission with a first planetary gear set having a first element, a second element, and a third element. The transmission includes a second planetary gear set having a fourth element connected to the third element for conjoint rotation, a fifth element and a sixth element. A first output shaft is connected to the fifth element for conjoint rotation and a second output shaft is connected to the fourth element for conjoint rotation. A first electric machine has a first rotor that is or can be coupled to the sixth element such that torques provided by the first rotor can be introduced into the transmission via the sixth element.

First claim

The invention claimed is:

1. An electric drive device for a motor vehicle, the electric drive device comprising:
a transmission comprising
a first planetary gear set having a first element, a second element, and a third element;
a second planetary gear set having a fourth element connected to the third element to conjointly rotate, a fifth element, and a sixth element;
a first output shaft connected to the fifth element to conjointly rotate and via which torques are dischargeable from the transmission, and
a second output shaft connected to the fourth element to conjointly rotate and via which torques are dischargeable from the transmission,

a first electric machine having a first rotor coupled or couplable to the sixth element such that torques provided by the first rotor are introducible into the transmission via the sixth element; and
a second electric machine having a second rotor coupled to the second element such that torques provided by the second rotor are introducible into the transmission via the second element,
wherein the second planetary gear set is arranged axially overlapping and radially surrounding the first planetary gear set.

2. The electric drive device of claim 1 , wherein the first element is coupled or couplable to the fifth element to conjointly rotate.

3. The electric drive device of claim 1 , further comprising:
a third planetary gear set having a seventh element connected to the fourth element to conjointly rotate, an eighth element connected to the fifth element to conjointly rotate, and a ninth element;
a first switching unit configured to connect the first rotor to the ninth element to conjointly rotate; and
a second switching unit configured to connect the first rotor to the sixth element to conjointly rotate.

4. The electric drive device of claim 3 , wherein the seventh element is a third sun gear, the eighth element is a third planetary carrier that is a double planetary carrier, and the ninth element is a third ring gear.

5. The electric drive device of claim 3 , further comprising:
a third switching unit configured to connect the first element to the fifth element to conjointly rotate.

6. The electric drive device of claim 5 , wherein the first electric machine, the third planetary gear set, the first planetary gear set, the third switching unit, and the second electric machine are arranged one after the other as viewed in an axial direction of the transmission in an order that follows, the first electric machine, the third planetary gear set, the first planetary gear set, the third switching unit, and the second electric machine.

7. The electric drive device of claim 3 , wherein the third element is a first sum shaft of the first planetary gear set, the fifth element is a second sum shaft of the second planetary gear set, and the ninth element is a third sum shaft of the third planetary gear set.

8. The electric drive device of claim 3 , wherein the first switching unit and the second switching unit are a double switching unit configured to switch into at least two switching positions by a single actuator.

9. The electric drive device of claim 1 , wherein the first element is a first sun gear, the second element is a first planetary carrier, the third element is a first ring gear, the fourth element is a second sun gear, the fifth element is a second planetary carrier, and the sixth element is a second ring gear.

10. The electric drive of claim 9 , wherein the first planetary carrier is a double planetary carrier and the second planetary carrier is a single planetary carrier.

Assignees

• Mercedes Benz Group Ag

Inventors

• Schilder Tobias
• Gitt Carsten
• Haerter Tobias
• Zeibig Jonathan

Classifications

• F16H2200/201

  with three sets of orbital gears · CPC title

• F16H2200/0034

  the gear ratios comprising two forward speeds · CPC title

• F16H2200/0021

  specially adapted for electric vehicles · CPC title

• F16H2048/364

  using electric or hydraulic motors · CPC title

• F16H2048/106

  characterised by two sun gears · CPC title