Rechargeable battery

1. A rechargeable battery comprising:

at least one storage module for electrical energy; and

at least one cooling device for cooling or controlling the temperature of the at least one storage module;

wherein the cooling device has a single-layer or multi-layer film and is lying with this film against the at least one storage module;

wherein the single-layer or multi-layer film forms multiple coolant channels;

wherein liquid-tight seams are formed between the coolant channels;

wherein the cooling device has an inner surface and an outer surface opposite the inner surface;

wherein the inner surface borders the coolant channels;

wherein the cooling device is provided with at least one stiffening element;

wherein the stiffening element is an at least concavely and/or convexly curved surface element arranged partially distanced from the single-layer or multi-layer film, forming an intermediate space between the outer surface and the stiffening element; and

wherein the stiffening element is provided with beadings forming seam support elements for liquid-tight seams of the single-layer or multi-layer film.

2. The rechargeable battery according to claim 1 , wherein the concavely or convexly curved surface element is integrated into or at least partially forms a rechargeable battery lid.

3. The rechargeable battery according to claim 1 , wherein a foam element or a casting resin element is arranged in the intermediate space.

4. The rechargeable battery according to claim 3 , wherein the concavely or convexly curved surface element and/or the single-layer or multi-layer film is connected to the foam element or the casting resin element.

5. The rechargeable battery according to claim 1 , wherein the stiffening element is provided with a traction element.

6. The rechargeable battery according to claim 3 , wherein the liquid-tight seams are provided with at least one further seam support element.

7. The rechargeable battery according to claim 6 , wherein the further seam support element is formed by the at least one foam element or the casting resin element, which abuts on the liquid-tight seams for this purpose.

8. The rechargeable battery according to claim 6 , wherein the liquid-tight seams are provided with further seam support elements on first and second sides of the seams.

9. The rechargeable battery according to claim 1 , further comprising at least one stiffening rib formed on the surface element.

10. The rechargeable battery according to claim 1 , wherein the cooling device comprises at least one coolant inlet and at least one coolant outlet, wherein the coolant inlet and the coolant outlet are arranged in an integral mold piece.

11. The rechargeable battery according to claim 10 , wherein at least one sealing element is integrated into the mold piece for the sealing connection of the mold piece to the single-layer or multi-layer film.