Battery housing, battery arrangement and method for producing a battery housing

1. A battery housing for structural integration of batteries in a vehicle, the battery housing comprising:

an inner housing for receiving a battery;

an outer housing which surrounds the inner housing such that a cavity is formed between the inner housing and the outer housing; and

a separating layer which is formed in the cavity and connects the inner housing to the outer housing such that the cavity is divided by the separating layer into two separate regions;

wherein the separating layer divides the cavity into two regions which are separated in a fluid-tight manner;

wherein a first of the two regions is configured as an outlet for fluids to be expelled from the cavity and a second of the two regions is configured as an inlet for fluids to ingress into the cavity; and

wherein the inner housing and outer housing are connected together by a plurality of structure-reinforcing pins which are disposed or pierced through the cavity from the outer housing to the inner housing.

2. The battery housing according to claim 1 , wherein the separating layer is a stiffening layer of the battery housing.

3. The battery housing according to claim 1 , wherein the cavity is at least partially filled with a foam material.

4. The battery housing according to claim 1 , wherein the inner housing and the outer housing are formed from plastic and the pins are formed from resin-infiltrated fiber bundles.

5. The battery housing according to claim 1 , wherein the inner housing is configured for receiving the battery in a precisely fitting manner.

6. The battery housing according to claim 1 , wherein the inner housing is of cylindrical design for receiving a cylindrical battery.

7. A battery arrangement comprising at least one battery housing according to claim 1 and comprising at least one battery which is arranged in the inner housing of the at least one battery housing.

8. The battery arrangement according to claim 7 , wherein the at least one battery is fastened in the inner housing.

9. The battery arrangement according to claim 7 , wherein the at least one battery is connected in an integrally bonded manner to the inner housing or is fastened in a mechanically releasable manner to the inner housing.

10. The battery arrangement according to claim 7 , wherein the inner housing together with the battery defines an intermediate space which is filled with a thermally conductive liquid.

11. The battery arrangement according to claim 7 , comprising a plurality of battery housings and a plurality of batteries.

12. The battery arrangement according to claim 11 , wherein the cavities of the individual battery housings are separated off from one another in a fluid-tight manner.

13. The battery arrangement according to claim 7 , wherein the battery arrangement is configured as a sandwich panel, cladding panel, and/or floor panel.

14. An aircraft or spacecraft comprising a battery arrangement according to claim 10 .