Composite system to shield and protect batteries from radiation and fire
A composite system is described, comprising at least one carrier layer; at least one layer designed as a fire protection fleece; and at least one component for shielding electrical, magnetic and/or electromagnetic radiation. Furthermore, a method for its manufacture and use is described.
1 . A composite system comprising at least one carrier layer including a silicate fibre needle mat and a stainless steel foil;
at least one fire protection layer; and
at least one component for shielding at least one from the group consisting of electrical, magnetic, and electromagnetic radiation,
the at least one component for shielding formed by at least one from the group consisting of (1) an aluminium foil placed outside the at least one carrier layer and the at least one fire protection layer and (2) at least one from the group consisting of glass fibres coated with metal and basalt fibres coated with metal.
2 . The composite system according to claim 1 , wherein the at least one from the group consisting of glass fibres coated with metal and basalt fibres coated with metal are coated with aluminium and have at least one of the following parameters:
i) a filament diameter of 5 to 24 μm;
ii) a thickness of the aluminium coating of 0.1 to 3 μm; and
iii) a filament fibre length of 1 to 20 mm.
3 . The composite system according to claim 1 , wherein the silicate fibre needle mat and the stainless steel foil are directly adjacent.
4 . The composite system according to claim 1 , wherein the at least one fire protection layer comprises a glass fibre fabric.
5 . The composite system according to claim 4 , wherein the glass fibre fabric is coated with a fire protection composition.
6 . The composite system according to claim 4 , wherein the glass fibre fabric is provided with a fire-protection composition that contains, as binders, urea resins, modified polyvinyl alcohol, polyacrylic acid, water glasses, PU binders and mixtures of the aforementioned binders and at least one ablative compound, the ablative compound being ceramifying, carbonizing, sublimating, or expandable under the action of heat.
7 . The composite system according to claim 4 , wherein the glass fibre fabric is impregnated with a fire protection composition.
8 . The composite system according to claim 1 , wherein the at least one component for shielding includes at least one foil of aluminium.
9 . The composite system according to claim 1 , wherein the composite system has the following layer structure:
a) aluminium foil, adjacent to
b) a layer designed as a fire protection fleece, adjacent to the
c) carrier layer, adjacent to
d) a layer designed as a fire protection fleece, adjacent to the
e) aluminium foil.
10 . A composite system according to claim 1 , wherein the at least one component for shielding includes at least one from the group consisting of aluminium-coated glass fibres and aluminium-coated basalt fibres.
11 . The composite system according to claim 10 , wherein the at least one from the group consisting of coated glass fibres and aluminium-coated basalt fibres are present in a plastic layer that surrounds the at least one fire protection layer and the at least one carrier layer.
12 . A method of producing a composite system according to claim 1 , wherein the individual layers are provided and bonded together by means of a hot-melt adhesive and under the action of pressure.