Mounting frame for an electrically driven motor vehicle

• US 9,469,182 B2
• Filed: 06/12/2014
• Issued: 10/18/2016
• Est. Priority Date: 06/12/2013
• Status: Active Grant

• Current Assignee: Dr Ing hc F Porsche AG (Volkswagen AG)
• Original Assignee: Dr Ing hc F Porsche AG (Volkswagen AG)
• Inventors: Merkel, Timo Fabian
• Primary Examiner(s): ENGLISH, JAMES A
• Application Number:
  US14/302,652
• Publication Number:
  US 20150360548A1
• Time in Patent Office: 859 Days
• US Class Current: 1/1
• CPC Class Codes: B60K 1/00 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; electric transmission arrangements B60K17/12; electric equipment or propulsion of electrically-propelled vehicles per se B60L; current-collectors for power supply lines of electrically-propelled vehicles B60L5/00
• CPC Class Codes: B60K 2001/0405 characterised by their position
• CPC Class Codes: B60L 50/66 Arrangements of batteries
• CPC Class Codes: B62D 21/155 Sub-frames or underguards
• CPC Class Codes: B62D 25/082 Engine compartments
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A mounting frame (20) for an electrically driven motor vehicle (10) has two frame beams (34, 36) oriented in a longitudinal direction (18) of the motor vehicle (10). An electric drive unit (22) for driving the motor vehicle (10) is mounted on the frame beams (34, 36), and has an electrical component (28) formed separately from the electric drive unit (22). The electrical component (28) is accommodated in a flexurally stiff housing (40) that is mounted on the mounting frame (34, 36). The frame beams (34, 36) form a frame arrangement which is open outwardly in the longitudinal direction (18), and the housing (40) of the electrical component (28) is mechanically fixedly connected to the two frame beams (34, 36) to form a closed frame section together with the frame beams (34, 36).

Claims

1. A mounting frame for an electrically driven motor vehicle, comprising:

two frame beams oriented in a longitudinal direction of the motor vehicle, the frame beams having inwardly facing surfaces opposed to one another;

at least one transverse beam extending between the frame beams;

an electric drive unit for driving the motor vehicle mounted on the frame beams, the electric drive unit being in proximity to a first longitudinal end of the motor vehicle and being at a first elevational position on the vehicle; and

an electrical component formed separately from the electric drive unit, the electrical component being accommodated in a flexurally stiff housing mounted in contact with the inwardly facing surfaces of the frame beams of the mounting frame at a second elevational position on the vehicle that is different from the first elevational position, the frame beams forming a frame arrangement that is open outwardly toward the first longitudinal end in the longitudinal direction, and a plurality of connecting elements fixedly connecting the flexurally stiff housing of the electrical component directly to the two frame beams at a plurality of longitudinal positions along the longitudinal direction between the electric drive unit and the first longitudinal end of the vehicle to form a closed frame together with the frame beams and with the electric drive unit being within the closed frame.

2. The mounting frame of claim 1, wherein the frame beams are substantially parallel to one another.

3. The mounting frame of claim 1, wherein the frame beams are hollow profile beams and have buckling sections for absorbing deformation energy.

4. The mounting frame of claim 1, wherein the electrical component has a flexurally stiff metal plate connected mechanically fixedly to the housing for cooling the electrical component in the flexurally stiff housing.

5. The mounting frame of claim 4, characterized in that the electrical component is a charging unit and is designed for exchanging electrical energy between an external electrical energy source and an electrical energy store of the motor vehicle.

6. The mounting frame of claim 4, wherein the electrical component is an inverter arrangement for controlling the electric drive unit.

7. An electrically driven motor vehicle having a supporting frame and the mounting frame of claim 1, wherein the mounting frame is arranged on the supporting frame and is mechanically fixedly connected to the supporting frame.

8. The mounting frame of claim 1, wherein the flexurally stiff housing is adjacent the transverse beam and between the transverse beam and the first longitudinal end of the motor vehicle.