Electrically driven axle of a two-track vehicle

Patent metadata

Field	Value
Publication number	US-8991530-B2
Application number	US-201313874810-A
Country	US
Kind code	B2
Filing date	May 1, 2013
Priority date	Nov 15, 2010
Publication date	Mar 31, 2015
Grant date	Mar 31, 2015

Abstract

An electrically driven axle of a two-track vehicle is provided having drive shafts which are assigned to the wheels and an axle carrier with a plurality of wheel-guiding steering arms which are attached thereto. At least one electric motor is attached to the axle carrier, and furthermore a housing containing elements for making available electrical energy for the electric motor is attached to the axle carrier or forms a component of the axle carrier in the form of a base body. At least one of the wheel-guiding steering arms is connected to the base body or housing, and arms extend from the base body of the axle carrier, on the end regions of which arms the vehicle body is supported via rubber bearings. The underfloor of the base body or housing facing the roadway is preferably essentially planar.

First claim

What is claimed is:

1. An electrically driven axle of a two-track vehicle, comprising:
drive shafts respectively assigned to wheels of the vehicle;
an axle carrier housing comprising a base and a cover;
a plurality of wheel-guiding control members fastened to the axle carrier housing;
at least one electric motor fastened to the base of the axle carrier housing; and
an energy storage device configured to provide electric power to the at least one electric motor, the energy storage device being disposed within the axle carrier housing; and
arms that extend from the base of the axle carrier housing, wherein
end regions of the arms support a vehicle body via rubber bearings, and
the axle carrier housing creates a sealed enclosure that isolates the at least one electric motor and the energy storage device from other parts of the vehicle.

2. The electrically driven axle according to claim 1 , wherein an assigned electric motor is provided for each wheel.

3. The electrically driven axle according to claim 1 , wherein only one electric motor is fastened to the base of the axle carrier housing, the one electric motor having a power divider or differential connected on an output side for driving two drive shafts.

4. The electrically driven axle according to claim 1 , wherein an underside of the base of the axle carrier housing that faces a roadway is configured essentially planar.

5. An electrically driven axle of a two-track vehicle, comprising:
drive shafts respectively assigned to wheels of the vehicle;
a housing that encloses therewithin at least one electric motor;
a plurality of wheel-guiding control members fastened to the housing; and
an energy storage device that is enclosed within the housing, wherein
the housing creates a sealed enclosure that isolates the at least one electric motor and the energy storage device from other parts of the vehicle.

6. The electrically driven axle according to claim 5 , wherein the housing has a substantially cuboidal shape.

7. The electrically driven axle according to claim 6 , wherein the electric motor and the energy storage device are substantially horizontally coplanar.

8. The electrically driven axle according to claim 7 , wherein the electric motor is offset from an imaginary line connecting the drive shafts.

9. The electrically driven axle according to claim 5 , wherein an assigned electric motor is provided for each wheel.

10. The electrically driven axle according to claim 5 , wherein only one electric motor is enclosed within the housing, the one electric motor having a power divider or differential connected on an output side for driving two drive shafts.

11. The electrically driven axle according to claim 5 , further comprising arms that extend from the housing, end regions of the arms supporting a vehicle body via rubber bearings.

12. The electrically driven axle according to claim 5 , wherein an underside of the housing that faces a roadway is configured essentially planar.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Langer Juergen
• Lorenz Tobias

Classifications

• B60K7/0007

  the motor being electric · CPC title

• B60K2001/0438

  Arrangement under the floor · CPC title

• B60K2001/0416

  Arrangement in the rear part of the vehicle · CPC title

• B60K2001/001

  one motor mounted on a propulsion axle for rotating right and left wheels of this axle · CPC title

• B60K1/00

  Arrangement or mounting of electrical propulsion units (B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00) · CPC title