Electric drive device for driving a motor vehicle

Patent metadata

Field	Value
Publication number	US-9969252-B2
Application number	US-201414894261-A
Country	US
Kind code	B2
Filing date	May 27, 2014
Priority date	May 30, 2013
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

The present invention relates to an electrical drive arrangement for driving a motor vehicle comprising an electric motor, a drive shaft driven by means of the electric motor, a housing in which the electric motor is accommodated, which housing has an envelope surface and a substantially annular cross section wherein the horizontal direction of the envelope surface of said housing and hereby said drive shaft are arranged to run substantially transverse to the longitudinal direction of said vehicle, comprising a pendulum suspension for suspension of the electrical drive arrangement, where the pendulum suspension comprises a fastening configuration fixedly connected to the vehicle and at least one pendulum attachment fixedly connected to the envelope surface of the housing and pivotally journaled relative to said fastening configuration by means of a bearing configuration. The invention also relates to a motor vehicle.

First claim

The invention claimed is:

1. An electrical drive arrangement for driving a motor vehicle comprising:
an electric motor,
a drive shaft driven by the electric motor,
a housing in which the electric motor is accommodated, which housing has an envelope surface and a substantially annular cross section, wherein the horizontal direction of the envelope surface of said housing and hereby said drive shaft are arranged to run substantially transverse to the longitudinal direction of said vehicle,
a pendulum suspension for suspension of the electrical drive arrangement, where the pendulum suspension comprises a fastening configuration fixedly connected to the vehicle and at least one pendulum attachment fixedly connected to the envelope surface of the housing and pivotally journaled relative to said fastening configuration by a bearing configuration,
wherein said pendulum attachment is connected to a connection unit, attached at the envelope surface of said housing, for medium supply of the electric motor, and
wherein said medium supply is configured to take place via an opening in the envelope surface of said housing.

2. The electrical drive arrangement of claim 1 , wherein the electric motor has a stator and a rotor arranged to rotate the drive shaft.

3. The electrical drive arrangement of claim 1 , wherein said drive shaft is arranged for driving two output shafts for driving ground engaging members, preferably via suitable transmission configurations and wherein said output shafts are arranged to run substantially transverse to the longitudinal direction of said vehicle.

4. The electrical drive arrangement of claim 1 , wherein said fastening configuration is arranged for suspension of a front and a rear pendulum attachment.

5. The electrical drive arrangement of claim 1 , wherein said bearing configuration comprises slide bearing.

6. The electrical drive arrangement of claim 5 , wherein said slide bearing comprises an outer bearing part fixedly connected to said fastening configuration and an inner bearing part fixedly connected to said pendulum attachment and internally and slidable relative to said outer bearing part.

7. The electrical drive arrangement of claim 6 , wherein said connection unit is connected to said pendulum attachment inside the inner bearing part of said slide bearing.

8. The electrical drive arrangement of claim 1 , wherein said pendulum attachment is arranged between uppermost and lowermost portions of the envelope surface of said housing.

9. The electrical drive arrangement of claim 1 , wherein said pendulum attachment axially is arranged substantially adjacent to a central portion of the envelope surface of said housing.

10. The electrical drive arrangement of claim 1 , wherein the pendulum attachment circumferentially of the envelope surface of the housing is located adjacent to a horizontal centre plane of the envelope surface of the housing.

11. The electrical drive arrangement of claim 1 , wherein said medium supply comprises energy supply by power electronics and/or coolant and lubricant supply.

12. The electrical drive arrangement of claim 1 , wherein an oil sump is arranged at the bottom of the housing in a desired space formed between the electric motor and said housing under a lowermost portion of the envelope surface of the electric motor, for said coolant and lubricant supply.

13. The electrical drive arrangement of claim 12 , wherein the electric motor is eccentrically arranged in the housing such that the centre of rotation of the drive shaft of the electric motor runs substantially parallel to and spaced from an imaginary centre axis of the housing to form said desired space.

14. The electrical drive arrangement of claim 12 , further comprising a differential device having a shaft configuration arranged in the housing in the desired space between the electric motor and the housing.

15. A motor vehicle comprising the electrical drive arrangement of claim 1 .

Assignees

• Bae Systems Haegglunds Ab
• Bae Systems Haegglunds Aktriebolag

Inventors

• Engblom Daniel

Classifications

• B60K1/00 Primary

  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

• B60Y2306/03

  Lubrication · CPC title

• B60K2001/001

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

• B60G9/02

  the axle or housing being pivotally mounted on the vehicle {, e.g. the pivotal axis being parallel to the longitudinal axis of the vehicle (B60G9/003 takes precedence)} · CPC title

• B60Y2200/41

  Construction vehicles, e.g. graders, excavators · CPC title