DE102017003720B3 - Arrangement and method for closing body openings in the floor panel of a motor vehicle with underfloor battery - Google Patents

Abstract

The invention relates to an arrangement for closing at least one body opening (15) in the floor panel (10) of a motor vehicle, comprising: - a floor panel (10) with at least one body opening (15); - At least one below the floor panel (10) arranged underfloor battery (30); - At least one on the upper side (31) of the underfloor battery (30) arranged foam pad (50) which closes the body opening (15). The invention further relates to a method for closing at least one body opening (15) in the floor panel (10) of a motor vehicle when installing a base battery (30).

Description

The invention relates to an arrangement and a method for closing at least one body opening in the floor panel of a motor vehicle.

Floor panels or bodywork floors of motor vehicles may be provided with openings which serve as suspension and support points in the production of these motor vehicles (on which the bodies are connected, for example, to the transport racks of a production line production) and / or which serve as a paint outlet during the painting process , These body or floor openings must then be closed in the course of vehicle production, what hitherto, for example, plastic plugs or grafting be used.

The DE 101 48 493 A1 describes a sealing plug for sealing an opening in a metal sheet of a body or floor panel of automobiles. The DE 10 2012 103 291 A1 describes a closure element for a body hole.

For closing bottom openings with such plugs, on the one hand, a separate operation is required. On the other hand, several millimeters of installation space are required in the Z direction (vehicle height direction), which is problematical in particular for motor vehicles with underfloor battery due to the already scarce installation space.

The object of the invention is to develop an arrangement for closing at least one body opening and an associated method in which at least one associated with the prior art disadvantage should be avoided or at least reduced.

The object is achieved with an inventive arrangement according to the patent claim 1 and with a method according to the invention according to the independent claim 9. Preferred developments and refinements of the invention will become apparent for both subject invention from the dependent claims, the following description of the invention and the drawings.

• – ein Bodenblech mit wenigstens einer zu verschließenden Karosserie- bzw. Bodenöffnung, wobei dieses Bodenblech insbesondere Bestandteil eines Kraftfahrzeugs bzw. einer Fahrzeugkarosserie (Automobilkarosserie) ist;
• – wenigstens eine unterhalb des Bodenblechs angeordnete Unterflurbatterie, die insbesondere eine Fahrbatterie bzw. Traktionsbatterie (zur elektrischen Versorgung eines elektromotorischen Fahrantriebs des Kraftfahrzeugs) ist;
• – wenigstens ein an der Oberseite der Unterflurbatterie angeordnetes Schaumstoffpad, welches die Karosserieöffnung verschließt.

The arrangement or closure arrangement according to the invention for closing (and sealing) at least one body opening in the floor panel of a motor vehicle comprises:

• A floor panel having at least one body opening or opening to be closed, this floor panel being in particular a component of a motor vehicle or a vehicle body (automobile body);
• - At least one arranged below the floor panel underfloor battery, which is in particular a traction battery or traction battery (for the electrical supply of an electromotive drive of the motor vehicle);
• - At least one arranged on the upper side of the underfloor battery foam pad, which closes the body opening.

The arrangement according to the invention can also be referred to as a system or closure system.

The after the installation of the underfloor battery in the motor vehicle the floor panel facing outer surface of the underfloor battery is referred to as the top. A foam pad is a cushion-like flat cushion formed of a foam material. The Schaumstoffpad presses from below against the body opening in the floor panel, such that the body opening is covered by Schaumstoffpad and sealed. The motor vehicle is in particular an electric car or hybrid car. This can be, for example, a passenger car, a light transporter, a minibus or the like.

The invention has many advantages. A separate operation for closing bottom openings is no longer required. In particular, several bottom openings can be closed simultaneously when installing the underfloor battery. Furthermore, no additional installation space is needed in the Z direction. In addition, there is a better thermal and noise insulation. This is not an exhaustive list.

It is preferably provided that the underfloor battery has a battery housing, wherein the foam pad is arranged on this battery housing and in particular on a housing cover or battery cover of the battery housing.

The foam pad is preferably made of an elastomeric plastic foam (elastomeric foam), z. As a PU foam formed. Furthermore, it is preferably provided that the foam pad is formed of a closed-cell plastic foam or at least of a mixed-cellular plastic foam, which u. a. for the thermal and / or acoustic insulation is advantageous.

The foam pad can be designed and arranged in such a way that a preferably peripheral, perforated edge covering of at least 10 mm and preferably at least 15 mm is achieved at the edge of the hole in the bodywork opening. With a typical opening diameter of about 30 mm (circular hole), the foam pad can thus have a diameter of 50 mm to 60 mm.

The foam pad may have an original thickness of 10 mm to 25 mm, and preferably 15 mm to 20 mm. When closing the body opening, the foam pad can be compressed in the thickness direction by about 40% to 60%. The compression takes place in particular in the area of the hole edge coverage (overlap area).

The at least one foam pad can be glued to the underfloor battery or its housing or housing cover. The foam pad can be formed, for example, with a self-adhesive side. Furthermore, it can be provided that the Schaumstoffpad is formed and in particular molded. D. h., Forming and connecting the foam pad can be done in one operation. The Schaumstoffpad can already in the manufacture of the battery, d. H. also be applied to a supplier, or in the course of the installation preparation (pre-assembly) at the relevant point. The relevant point is preferably marked.

• – Bereitstellen des Kraftfahrzeugs bzw. der Kraftfahrzeugkarosserie, dessen/deren Bodenblech wenigstens eine zu verschließende Karosserieöffnung aufweist;
• – Bereitstellen einer Unterflurbatterie, die an ihrer Oberseite wenigstens ein Schaumstoffpad aufweist;
• – Einbau bzw. Montage der Unterflurbatterie unter das Bodenblech, insbesondere derart, dass die Unterflurbatterie von unten an das Bodenblech angenähert wird, wobei die Karosserieöffnung von dem Schaumstoffpad verschlossen wird.

The method according to the invention for closing at least one body opening or bottom opening in the floor panel of a motor vehicle has the steps:

• - Providing the motor vehicle or the vehicle body, whose / whose bottom plate has at least one body opening to be closed;
• - Providing a base battery having at least one foam pad on its upper side;
• - Installation or mounting of the underfloor battery under the floor panel, in particular such that the underfloor battery is approached from below to the floor panel, wherein the body opening is closed by the Schaumstoffpad.

The invention will be explained in more detail with reference to the drawing. Regardless of certain feature combinations, the features shown in the single figure of the drawing and / or explained below may be general features of the invention and further develop the invention accordingly.

1 shows in a schematic and not to scale sectional view a section of a floor panel on a motor vehicle with a closed bottom opening according to the invention.

The bottom plate formed from several sheet metal parts 10 (Floor panel assembly), which forms the vehicle floor of a motor vehicle, has in the area shown a body or bottom opening 15 on, with a surrounding plate-like depression or increase 17 is trained. Inside is located on the bottom plate 10 a floor covering 20 ,

Below the bottom plate 10 is a so-called underfloor battery 30 arranged and fastened in a suitable manner. The underfloor battery 30 and the floor panel 10 are, at least in the area of the opening shown 15 , formed with complementary molding areas when installing the underfloor battery 30 to a predetermined distance or gap 40 be approximated. On the floor panel 10 facing top 31 the underfloor battery 30 is a foam pad 50 arranged with which the bottom opening 15 is sealed from below.

The foam pad 50 is space-neutral in the gap 40 between the top 31 the underfloor battery 30 and the bottom or outside of the floor panel 10 , Starting from its original contour 55 becomes the foam pad 50 when installing the underfloor battery 30 compressed in the region of the hole edge coverage B by the contact pressure in the Z direction, thereby producing a sealing effect.

The bottom plate or bottom plate assembly 10 can have several bottom openings 15 have, in the same way, ie with more on the same underfloor battery 30 or on at least one other underfloor battery 30 arranged foam pads 50 , are closed. It may, for example, be provided that several closely spaced floor openings 15 together with a suitably sized foam pad 50 are closed. The bottom openings 15 may also have a different horizontal surface orientation from that shown.

Claims (9)

Arrangement for closing at least one body opening ( 15 ) in the floor panel ( 10 ) of a motor vehicle, comprising: - a floor panel ( 10 ) with at least one body opening ( 15 ); At least one below the floor panel ( 10 ) arranged underground battery ( 30 ); - at least one at the top ( 31 ) of the underfloor battery ( 30 ) arranged foam pad ( 50 ), which the body opening ( 15 ) closes. Arrangement according to claim 1, characterized in that the underfloor battery ( 30 ) has a battery housing, wherein the foam pad ( 50 ) is arranged on the housing cover. Arrangement according to one of the preceding claims, characterized in that the Foam pad ( 50 ) is formed of an elastomeric plastic foam. Arrangement according to one of the preceding claims and in particular according to claim 3, characterized in that the foam pad ( 50 ) is formed of a closed-cell plastic foam. Arrangement according to one of the preceding claims, characterized in that the hole edge covering (B) of the foam pad ( 50 ) is at least 10 mm and preferably at least 15 mm. Arrangement according to one of the preceding claims, characterized in that the foam pad ( 50 ) has an original thickness of 10 mm to 25 mm, preferably 15 mm to 20 mm, and when closing the body opening ( 15 ) is compressed in the thickness direction by 40% to 60%. Arrangement according to one of the preceding claims 1 to 6, characterized in that the foam pad ( 50 ) is glued. Arrangement according to one of the preceding claims 1 to 6, characterized in that the foam pad ( 50 ) is formed. Method for closing at least one body opening ( 15 ) in the floor panel ( 10 ) of a motor vehicle, comprising the steps of: - providing the motor vehicle whose bottom plate ( 10 ) at least one body opening to be closed ( 15 ) having; - Provision of a bottom battery ( 30 ) at the top ( 31 ) at least one foam pad ( 50 ) having; - Installation of the underfloor battery ( 30 ) under the floor panel ( 10 ), wherein the body opening ( 15 ) from the foam pad ( 50 ) is closed.

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