Subframe for a motor vehicle

• US 9,120,506 B2
• Filed: 11/27/2013
• Issued: 09/01/2015
• Est. Priority Date: 11/29/2012
• Status: Active Grant

• Current Assignee: Audi AG (Volkswagen AG)
• Original Assignee: Audi AG (Volkswagen AG)
• Inventors: Isakiewitsch, Christian, Achhammer, Siegfried, Rugies, Stefan, Elias, Bjrn
• Primary Examiner(s): Dickson, Paul N
• Assistant Examiner(s): Coker, Robert A
• Application Number:
  US14/092,192
• Publication Number:
  US 20140145423A1
• Time in Patent Office: 643 Days
• Field of Search: 180/311, 180/312, 180/68.5, 191/10, 280/781, 280/785, 280/124.109, 320/108
• US Class Current: 1/1
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• CPC Class Codes: B62D 21/11 with resilient means for suspension , e.g. of wheels or engine; sub-frames for mounting engine or suspensions
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

A subframe of a front or rear part of a motor vehicle includes two longitudinal members arranged in spaced-apart relationship in a vehicle transverse direction and connected to one another by a cross member. A reinforcement is connected to the longitudinal members and the cross member for increasing a torsion resistance of the subframe and has integrated therein a charge module which is configured to transmit energy in a contactless manner.

Claims

1. A subframe of a front or rear part of a motor vehicle, comprising:

two longitudinal members arranged in spaced-apart relationship in a vehicle transverse direction;

a cross member connecting the longitudinal members with one another;

a reinforcement connected to the longitudinal members and the cross member for increasing a torsion resistance of the subframe; and

a charge module configured to transmit energy in a contactless manner, said charge module being placed in a free space of the reinforcement and having a marginal area configured for connection to the reinforcement,

wherein the charge module includes a coil unit and a shielding plate placed in relation to the coil unit such as to separate the coil unit from a surrounding ferro-magnetic component.

2. The subframe of claim 1, wherein the longitudinal members are arranged in symmetry to one another.

3. The subframe of claim 1, wherein the longitudinal members are connected via a cast node with the cross member to form an open or closed frame construction.

4. The subframe of claim 1, wherein the free space is provided in midsection of the reinforcement.

5. The subframe of claim 1, wherein the charge module has a bottom side and the reinforcement has a bottom side which extends in alignment with the bottom side of the charge module, when the charge module is attached in the free space of the reinforcement.

6. The subframe of claim 1, wherein the coil unit is disposed below the shielding plate.

7. The subframe, of claim 6, wherein the shielding plate is made of aluminum.

8. The subframe of claim 6, wherein the shielding plate is connected with the reinforcement.

9. The subframe of claim 6, wherein the charge module includes an isolating element arranged between the shielding plate and the coil unit.

10. The subframe of claim 9, wherein the isolating element is configured as a rubber-elastic support of the coil unit upon the shielding plate.

11. The subframe of claim 6, wherein the coil unit is disposed below the shielding plate geodetically in an installed state.

12. The subframe of claim 6, wherein the marginal area is part of the shielding plate and configured for connection with a marginal area of the reinforcement.

13. The subframe of claim 12, further comprising a screw fastener configured to connect the marginal area of the shielding plate and the marginal area of the reinforcement to one another.

14. A motor vehicle, comprising:

a subframe having two longitudinal members arranged in spaced-apart relationship in a direction transverse to a vehicle, a cross member connecting the longitudinal members with one another, a reinforcement connected to the longitudinal members and the cross member for increasing a torsion resistance of the subframe, and a charge module configured to transmit energy in a contactless manner, said charge module being placed in a free space of the reinforcement and having a marginal area configured for connection to the reinforcement, said charge module including a coil unit and a shielding plate placed in relation to the coil unit such as to separate the coil unit from a surrounding ferro-magnetic component; and

an electric energy storage connected to the charge module.

15. The motor vehicle of claim 14, wherein the electric energy storage is a traction battery.

16. The motor vehicle of claim 14, wherein the shielding plate has a marginal area configured for connection with a marginal area of the reinforcement.

17. The motor vehicle of claim 16, further comprising a screw fastener configured to connect the marginal area of the shielding plate and the marginal area of the reinforcement to one another.

18. The motor vehicle of claim 14, wherein the coil unit is disposed below the shielding plate.