MOTOR VEHICLE

Abstract

A motor vehicle having a vehicle body an electrical traction machine, and at least one electrical energy accumulator designed as a traction battery for temporarily storing electrical energy for operating the traction machine. The vehicle body and/or a battery housing of the traction battery is/are provided at least in some regions within intumescent fire protection coating.

Claims

1-10. (canceled)

11. A motor vehicle comprising: a vehicle body, an electrical traction machine, and at least one energy accumulator designed as traction battery for temporarily storing electrical energy for operating the traction machine, wherein the vehicle body and/or a battery housing of the traction battery is/are provided at least in some regions with an intumescent fire protection coating.

12. The motor vehicle as claimed in claim 11, wherein the vehicle body has a vehicle body component which delimits a battery receptacle space for accommodating the traction battery and is provided with the fire protection coating on its side facing toward the battery receptacle space.

13. The motor vehicle as claimed in claim 11, wherein the vehicle body component has the fire protection coating on its side facing away from the battery receptacle space.

14. The motor vehicle as claimed in claim 11, wherein the vehicle body component is a floor panel of the motor vehicle.

15. The motor vehicle as claimed in claim 11, wherein the battery receptacle space is designed to be weatherproof.

16. The motor vehicle as claimed in claim 11, wherein the battery housing has the fire protection coating on its outside.

17. The motor vehicle as claimed in claim 11, wherein the fire protection coating has ammonium polyphosphate, polyurethane, and/or sodium silicate.

18. The motor vehicle as claimed in claim 11, wherein the polyurethane is foamed.

19. The motor vehicle as claimed in claim 11, wherein the fire-protection coating is a multiple coating, which has multiple fire protection layers.

20. The motor vehicle as claimed in claim 11, wherein the fire protection coating is designed as an acoustic insulation layer.

21. The motor vehicle as claimed in claim 12, wherein the vehicle body component has the fire protection coating on its side facing away from the battery receptacle space.

22. The motor vehicle as claimed in claim 12, wherein the vehicle body component is a floor panel of the motor vehicle.

23. The motor vehicle as claimed in claim 13, wherein the vehicle body component is a floor panel of the motor vehicle.

24. The motor vehicle as claimed in claim 12, wherein the battery receptacle space is designed to be weatherproof.

25. The motor vehicle as claimed in claim 13, wherein the battery receptacle space is designed to be weatherproof.

26. The motor vehicle as claimed in claim 14, wherein the battery receptacle space is designed to be weatherproof.

27. The motor vehicle as claimed in claim 12, wherein the battery housing has the fire protection coating on its outside.

28. The motor vehicle as claimed in claim 13, wherein the battery housing has the fire protection coating on its outside.

29. The motor vehicle as claimed in claim 14, wherein the battery housing has the fire protection coating on its outside.

30. The motor vehicle as claimed in claim 15, wherein the battery housing has the fire protection coating on its outside.

Description

[0020] In the following, the invention will be explained in greater detail with reference to the exemplary embodiments depicted in the drawings, without the invention being restricted. In the single FIGURE

[0021] FIGURE shows a schematic illustration of a motor vehicle.

[0022] The FIGURE shows a schematic illustration of a motor vehicle 1, which has a vehicle body 2. The motor vehicle 1 has an electrical traction machine (not shown here) and a traction battery 3, in which electrical energy for operating the traction machine can be temporarily stored. The traction battery 3 is preferably composed of a plurality of battery cells 4, only a few of which are identified by way of example. The battery cells 4 are arranged in a battery housing 5, which in turn is located in a battery receptacle space 6 of the motor vehicle 1.

[0023] The battery receptacle space 6 is delimited at least in regions by the vehicle body 2, namely a vehicle body component 7 of the vehicle body 2. The vehicle body component 7 is preferably arranged as shown here between a passenger compartment 8 of the motor vehicle 1 and the traction battery 3. For example, the vehicle body component 7 is provided in the form of a floor panel of the motor vehicle 1. The battery receptacle space 6 can be designed to be weatherproof by means of a cover 9. The cover 9 is preferably fastened to the vehicle body 2, in particular fastened so it is detachable without damage, so that easy replacement of the traction battery 3 is ensured.

[0024] An intumescent fire protection coating 10 is applied to the body component 7 at least in some regions or over the entire surface. The fire protection coating 10 is designed in such a way that it foams up, i.e., increases its material thickness, in case of fire of the traction battery 3 or if the temperature in the battery receptacle space 6 exceeds a limiting value. As a result, the thermal conductivity of the fire protection coating 10 is significantly reduced, so that in particular the passenger compartment 8 is protected from a thermal influence of the traction battery 3.

[0025] The fire protection coating 10 preferably additionally serves as an acoustic insulation layer, so that the separate attachment or application of such an acoustic insulation layer can be dispensed with. Of course, however, it can alternatively be provided that the fire protection coating 10 is applied to an acoustic insulation layer. A compact formation is also achieved in this case.

[0026] The described design of the motor vehicle 1 has the advantage that the vehicle body 2 and above all a passenger compartment 8 is reliably protected from a thermal influence of the traction battery 3, in particular in case of fire. The intumescent fire protection coating 10 is used for this purpose, which has, for example, ammonium phosphate, polyurethane, and/or sodium silicate.