Underfloor unit for a motor vehicle

Patent metadata

Field	Value
Publication number	US-2016272245-A1
Application number	US-201615050676-A
Country	US
Kind code	A1
Filing date	Feb 23, 2016
Priority date	Mar 17, 2015
Publication date	Sep 22, 2016
Grant date	—

Abstract

An underfloor unit ( 10 ) for protecting components of a motor vehicle, in particular a traction battery for electrically driving the motor vehicle, from ground impacts is provided. The underfloor unit ( 10 ) has a floor panel ( 12 ) for covering the motor vehicle component on the ground side and a plurality of separate impact protection tiles ( 16 ) connected to the floor panel ( 12 ) and intended for taking up ground impacts. As a result of the multiplicity of impact protection tiles ( 16 ), only individual impact protection tiles ( 16 ) need be exchanged on being subjected to a hard absorbed ground impact, thus making it possible to have a motor vehicle with low maintenance and/or repair costs.

First claim

What is claimed is:

1 . An underfloor unit for protecting components of a motor vehicle, in particular a traction battery for electrically driving the motor vehicle, from ground impacts, comprising:
a floor panel for covering a side of the motor vehicle component facing the ground; and a plurality of separate impact protection tiles connected to the floor panel at positions for taking up ground impacts.

2 . The underfloor unit of claim 1 , wherein the impact protection tiles are produced from at least one of steel, aluminum and a fiber composite.

3 . The underfloor unit of claim 1 , wherein the floor panel has a cooling duct open toward the impact protection tile and configured for cooling the motor vehicle component.

4 . The underfloor unit of claim 3 , further comprising a resilient and/or flexible sealing mat between the floor panel and the impact protection tile for sealing the cooling duct with respect to the impact protection tile.

5 . The underfloor unit of claim 1 , wherein a plurality of identically formed impact protection tiles are provided.

6 . The underfloor unit of claim 1 , wherein at least two impact protection tiles are connected to the floor panel so as to be behind one another in a direction of travel and/or at least two impact protection tiles are connected to the floor panel so as to be next to one another transverse to the direction of travel, wherein, for a number N of impact protection tiles arranged behind one another in the direction of travel and next to one another transverse to the direction of travel is such that 2≦N≦30.

7 . The underfloor unit of claim 1 , wherein the impact protection tiles are countersunk in corresponding depressions of the floor panel so that impact protection sides of the impact protection tiles that face the roadway surface are in a common plane with an underside of a frame part of the underfloor that is provided outside the impact protection tiles.

8 . The underfloor unit of claim 1 , wherein each of the impact protection tiles has at least one fastening opening for fastening the impact protection tiles to the underfloor, and wherein a releasable fastening is inserted and countersunk in the fastening opening.

9 . The underfloor unit of claim 1 , wherein the impact protection tiles are designed to absorb impact energy by plastic deformation and/or breaking.

10 . An electrically drivable motor vehicle, comprising: a traction battery for purely electrically driving the motor vehicle and the underfloor unit of claim 1 and disposed in a position for covering the traction battery on a ground side.

Assignees

• Porsche Ag

Inventors

• Berger Dennis
• Werner Michael

Classifications

• B62D25/2072 Primary

  Floor protection, e.g. from corrosion or scratching (floor mats B60N3/04, armour F41H7/042, insulation B60R13/08, streamlining B62D35/02) · CPC title

• B62D29/041

  Understructures · CPC title

• B62D29/007

  predominantly of special steel or specially treated steel, e.g. stainless steel or locally surface hardened steel · CPC title

• B62D29/008

  predominantly of light alloys, e.g. extruded · CPC title

• 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