BODY FLOOR FOR A BATTERY ELECTRIC VEHICLE

Abstract

A body floor (1) for an electric vehicle (2) has a battery frame (3) that receives battery modules (4). An interior cover (5) separates an interior (6) from the battery modules (4). At least one crossmember (7, 8) extends transverse to a vehicle longitudinal direction (9) and is on the battery side of the interior cover (5). A seat attachment (10) for connecting a vehicle seat (11) is arranged on the interior side of the interior cover (5). The battery modules (4) are attached to the crossmember (7, 8) by the battery frame (3), and the body floor (1) is a supporting component of the body structure of a vehicle (2). The seat attachment (10) is attached to the body floor (1) on the battery side of the interior cover (5). With this construction, the vehicle seat is low while simultaneously arranging battery modules below the vehicle seat.

Claims

1. A body floor that defines a supporting component of a body structure of a battery electric vehicle, comprising: a battery frame that receives a plurality of battery modules; an interior cover for physically separating an interior of the battery electric vehicle from the battery modules; at least one crossmember that extends transverse to a vehicle longitudinal direction when the at least one crossmember is fit in the battery electric vehicle, the at least one crossmember being on a side of the interior coverfacing the battery modules, the battery modules being attached to the at least one crossmember by means of the battery frame; and a seat attachment arranged on the side of the interior cover facing the battery modules and being configured for connecting a vehicle seat to the body floor.

2. The body floor of claim 1, where the seat attachment is surrounded by the crossmember and is integral with the crossmember.

3. The body floor of claim 2, wherein the at least one crossmember comprises first and second crossmembers separated from one another in the vehicle longitudinal direction to define a spacing between the crossmembers in the vehicle longitudinal direction, the seat attachment for the vehicle seat being formed jointly by the first and second crossmembers.

4. The body floor of claim 1, wherein the crossmember is arranged overlapping in the vehicle vertical direction and between the battery modules received in the battery frame in the vehicle longitudinal direction.

5. The body floor of claim 1, wherein the battery electric vehicle has a left sill member and a right sill member that extend in the vehicle longitudinal direction, and the at least one crossmember extends continuously transverse to the vehicle longitudinal direction from the left sill member to the right sill member, the at least one crossmember being disposed and configured to absorb side loads in a side impact.

6. The body floor of claim 5, wherein at least one of the seat attachment and the crossmember comprises a deformation element at the contact point to the sill members.

7. The body floor of claim 5, further comprising a wiring loom received between the interior cover and the battery module, at least part the wiring looms being placed at least in portions in one of the sill members.

8. The body floor of claim 1, further comprising an underseat drawer unit arranged between the interior cover and the vehicle seat.

9. A vehicle that can be driven electrically by battery, comprising a chassis with the body floor of claim 1, an interior and at least one vehicle seat for a passenger, wherein the body floor is a supporting component of a self-supporting body structure of the vehicle, and the at least one of the vehicle seat is fixed to the body floor by the battery-side seat attachment.

10. The vehicle of claim 9, wherein the interior cover is a supporting component of the body floor of the vehicle.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0040] FIG. 1 in extract, a side view of a body floor for a battery electric vehicle.

[0041] FIG. 2 a schematic top view of a battery electric vehicle.

DETAILED DESCRIPTION

[0042] FIG. 1 is a cross-sectional view of a portion of a body floor 1 for a battery electric vehicle 2 taken so that a gravitational direction runs from top to bottom on the page. The body floor 1 comprises a battery frame 3, an interior cover 5, a crossmember 7 and a seat attachment 10. Although one crossmember 7 is shown in FIG. 1, several may be provided, as shown for example in FIG. 2. The interior cover 5 physically (and preferably in safety terms) separates an interior 6, arranged at the top in the drawing, from the battery frame 3 arranged at the bottom in the drawing. The battery frame 3 is designed to receive battery modules 4. The interior cover 5 is a supporting component of the self-supporting body structure of the vehicle 2 and is configured in FIG. 1 as a plate. The interior cover 5 also is flat (at least the portion shown in FIG. 1). In this embodiment, the battery frame 3 surrounds (optionally) a protective cover 20 adjacent to the interior cover 5 above the battery modules 4. The battery frame 3 is connected by a transverse supporting structure 21 to the first crossmember 7 and preferably also to the second crossmember 8, see FIG. 2. More particularly, a frame nut 22 is mounted twist-resistantly or fixed in the crossmember 7, and a frame bolt 23 is screwed in from below. The crossmember 7 extends overlapping in the vehicle vertical direction and between the battery modules 4 in the vehicle longitudinal direction 9.

[0043] The crossmember 7 is configured for connection to a seat attachment 10 for a vehicle seat 11, so that the vehicle seat 11 is fixed in the battery electric vehicle 2 by means of the crossmember 7. The seat attachment 10 is formed by a threaded nut, mounted twist-resistantly or fixedly in the crossmember 7. The vehicle seat 11 is bolted by an underseat structure 24 to the seat attachment 10 via a seat bolt 25. The vehicle seat 11 comprises a seat rail 26 for individual adjustment of the seating position between the underseat structure 24 and the seat cushion 27 of the vehicle seat 11. In this embodiment, the interior cover 5 is flat with no reinforcing beads or other structures. Thus, a space is formed between the interior cover 5 and the underside of the seat cushion 27, for example for an underseat drawer unit 29.

[0044] The seat attachment 10 is positioned inside the first crossmember 7, which is positioned below the interior cover 5, and hence overlaps with the battery frame 3 in the vehicle vertical direction. Thus, a sports-car seating position can be achieved inside the battery electric vehicle 2, despite an arrangement of the battery modules 4 below the vehicle seat 11. In this embodiment, the crossmember 7 comprises or defines a receiver for a wiring loom 19 of a vehicle electrical system 18.

[0045] FIG. 2 shows a schematic top view of a battery electric vehicle 2 where the vehicle longitudinal direction 9 is oriented horizontally. The battery electric vehicle 2 comprises a plurality of wheels 28, a left sill member 13, a right sill member 14, a first crossmember 7 and a second crossmember 8. The first crossmember 7 and the second crossmember 8 have a spacing 12 in the vehicle longitudinal direction 9. In this embodiment, the crossmembers 7, 8 are positioned transversely to the vehicle longitudinal direction 9 and extend between the sill members 13, 14 and adjoin the two sill members 13, 14. The sill members 13, 14 and the crossmembers 7, 8 are surrounded by a common vehicle chassis 15. The crossmembers 7, 8 are configured at their contact points 16 to the respective side member 13, 14 (at the top or bottom respectively in the drawing) as deformation elements 17 for the case of a crash. The deformation elements 17, which are designed for example as bellows, reduce and/or delay the effect of a side impact on the seat attachment 10. In this way, the effect on the vehicle seat 11 is also reduced and/or transmitted with a delay, and hence the person seated on the vehicle seat 11 is well protected in the event of a side impact.

[0046] With the body floor proposed here for a battery electric vehicle, it is possible to arrange a vehicle seat low down (typical of a sports car) while simultaneously arranging battery modules below the vehicle seat.

LIST OF REFERENCE SIGNS

[0047] 1 Body floor [0048] 2 Battery electric vehicle [0049] 3 Battery frame [0050] 4 Battery module [0051] 5 Interior cover [0052] 6 Interior [0053] 7 First crossmember [0054] 8 Second crossmember [0055] 9 Vehicle longitudinal direction [0056] 10 Seat attachment [0057] 11 Vehicle seat [0058] 12 Distance in vehicle longitudinal direction [0059] 13 Left sill member [0060] 14 Right sill member [0061] 15 Chassis [0062] 16 Contact point [0063] 17 Deformation element [0064] 18 Vehicle electrical system [0065] 19 Wiring loom [0066] 20 Protective cover [0067] 21 Transverse supporting structure of battery frame [0068] 22 Frame nut [0069] 23 Frame bolt [0070] 24 Underseat structure [0071] 25 Seat bolt [0072] 26 Seat bolt [0073] 27 Seat cushion [0074] 28 Wheel [0075] 29 Underseat drawer unit