Protective Device for Battery Cells

Abstract

A protective device for battery cells, a plurality of which are assembled to form a module for an electric drive of a vehicle, has a frame made of plastic provided between the battery cells and coated with a fire-retardant coating. The frame laterally separates each battery cell from the other battery cells. A further fire-retardant coating is preferably additionally applied directly onto a housing of the battery cells. An air gap can be provided between each battery cell and each separation chamber of the frame.

Claims

1-4. (canceled)

5. A protective device, comprising: a plurality of battery cells that are combined to form a module for an electrical drive of a vehicle; and a plastic frame, which plastic frame is enveloped with a first fire-suppressing layer and comprises separation chambers that laterally separate each of the plurality of battery cells from one another, wherein the plastic frame is provided between the battery cells.

6. The protective device as claimed in claim 5, further comprising: a second fire-suppressing layer additionally applied directly onto housings of the battery cells.

7. The protective device as claimed in claim 5, wherein an air gap is provided between each battery cell and each separation chamber of the frame.

8. A vehicle comprising a protective device as claimed in claim 5.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG. 1 is a schematic view of a plurality of battery cells in a frame according to an embodiment of the invention; and

[0030] FIG. 2 is a schematic view of a separation chamber of the frame for a battery cell with different layer-envelope alternatives.

DETAILED DESCRIPTION OF THE DRAWINGS

[0031] FIG. 1 shows a protective device for battery cells 1, a plurality of which are combined to form a module for an electrical drive of a vehicle. The protective device comprises in particular a plastic frame 2 between the battery cells 1, an air gap 3 preferably being provided between each battery cell 1 and each separation chamber of the frame 2. The frame 2 creates separation chambers, which laterally separate each battery cell 1 from the other battery cells 1.

[0032] FIG. 2 shows in the middle (black) that the frame 2 is enveloped with a fire-suppressing layer 4a. On the left side of FIG. 2, it is shown (black) that, as an alternative or in addition, the housing of the battery cells 1 may be enveloped with a fire-suppressing layer 4b. The two layers 4a and 4b may be different, and in particular the layer 4b may be thinner or lighter than the layer 4a; this is because the frame 2 is preferably formed by a plastic that is as lightweight and/or thin as possible.