Motor vehicle having an electric hybrid drive or electric drive and a crash energy-absorption device

Abstract

A motor vehicle having a crash energy-absorption device includes a body, an electric hybrid drive or electric drive with an electrical machine and a vehicle battery, and an axle support. A support of the axle support is provided between the body-in-white of the motor vehicle and the axle support and/or a crash cross-beam for the axle support is provided.

Claims

1. A motor vehicle having a crash energy-absorption device, comprising: a body shell; an electric hybrid or electric drive with an electrical machine and a traction battery; and an axle support, wherein a supporting apparatus of the axle support is provided between the body shell of the motor vehicle and the axle support, and/or a crash crossmember is provided for the axle support.

2. The motor vehicle according to claim 1, wherein the electrical machine is arranged in front of the traction battery in a direction of travel of the motor vehicle.

3. The motor vehicle according to claim 2, wherein the axle support is a front axle support.

4. The motor vehicle according to claim 1, wherein the supporting apparatus of the axle support is configured as a delta element which is fitted between a longitudinal member and the axle support of the motor vehicle.

5. The motor vehicle according to claim 1, wherein the body shell has a supporting element as an abutment for the supporting apparatus.

6. The motor vehicle according to claim 1, wherein the crash crossmember is configured for introducing a load in an event of a crash into a carrying structure of a housing of the traction battery.

7. The motor vehicle according to claim 6, wherein the carrying structure is configured as a lower part which is an annular armature.

8. The motor vehicle according to claim 2, further comprising: a deformation element which is fitted to the electrical machine arranged in front of said electrical machine.

9. The motor vehicle according to claim 8, wherein the deformation element has a honeycomb or sandwich structure.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 schematically shows a body shell of a motor vehicle.

(2) FIG. 1A shows a horizontal section (plan view) of a front end of the motor vehicle.

(3) FIG. 2 to FIG. 4 each show a vertical section through the front end.

DETAILED DESCRIPTION OF THE DRAWINGS

(4) FIG. 1 schematically shows, in a highly simplified manner, a body shell (a body-in-white) 11 of a motor vehicle which is designed as a passenger car. The body shell 11 has a front end 10 in the front region (with respect to a direction of travel of the motor vehicle in the forward direction). The body shell is provided with a bumper crossmember 12 and also with an integral member 19 which connects a left-hand-side longitudinal member 16 and a right-hand-side longitudinal member 18 to one another.

(5) Furthermore, FIG. 1 shows a crossmember 21 (below a windshield which is not identified by a reference symbol) and also a front roof frame 23. An A-pillar of the motor vehicle is identified by reference symbol 25, and a B-pillar is identified by reference symbol 27.

(6) In FIG. 1A, the front end 10 of the motor vehicle has the abovementioned bumper crossmember 12 which is adjoined by a crash box 14. The left-hand-side longitudinal member 16 and the right-hand-side longitudinal member 18 extend from the crash box 14.

(7) An electrical machine 24 is held at the sides by two bearing blocks (carrying blocks) 20, 22 which are connected to a front axle support 42 (FIG. 4) by means of bearings (not provided with reference symbols) and the front axle support is, in turn, connected to the longitudinal members 16 and, respectively, 18 of the body shell 11.

(8) A deformation element 26 which is fitted to the electrical machine 24 and the bearing blocks (carrying blocks) 20, 22 extends forward from the electrical machine 24. A traction battery 28 is located behind the electrical machine 24.

(9) FIG. 2 shows the electrical machine 24 (partially concealed by a transmission 40 of the drive unit) with the deformation element 26 protruding forward from the electrical machine.

(10) A crash crossmember 36 is provided between the bearing block 20 of the electrical machine 24 and the front axle support 42.

(11) As shown in FIG. 3, a supporting element 50, which is of triangular design (in the form of a “delta element”) in vertical section, is arranged between the body shell 11 and the front axle support 42. A supporting element (supporting region) 51 of the body shell 11 serves as an abutment for force support here. The area which is bordered by a dashed line in FIG. 3 illustrates which parts belong to the front axle support 42.

(12) FIG. 4 once again illustrates the electrical machine 24, the deformation element 26 which is fitted to it, the transmission 40, the bearing block 20, the front axle support 42 and the crash crossmember 36. The electrical machine 24 and the traction battery 28 are located at approximately the same height.

(13) The crash crossmember 36 is located to the left of the dash-and-dot line in FIG. 4, and the traction battery 28 is located to the right of the line.

(14) The traction battery 28 has schematically illustrated rows 30, 32 of battery cells. The traction battery 28 is held by a lower part 60 which is designed as an annular armature and, as a carrying structure, forms part of a housing of the traction battery (high-voltage storage) 28.

LIST OF REFERENCE SYMBOLS

(15) 10 Front end 11 Body shell 12 Bumper crossmember 14 Crash box 16 Longitudinal member of the body shell 18 Longitudinal member of the body shell 20 Bearing block (carrying block) 21 Crossmember 22 Bearing block (carrying block) 23 Roof frame at the front 24 Electrical machine 25 A-pillar 26 Deformation element 27 B-pillar 28 Traction battery 30 Battery cells 32 Battery cells 36 Crash crossmember 40 Transmission 42 Front axle support 50 Supporting apparatus (Delta element) 51 Supporting element 52 Body shell 60 Lower part (annular armature)