Method and device for connecting composite metal foils for pouch cells with a pre-sealing tape

1. A method for connecting a pre-sealing tape to a composite metal foil for pouch cells, comprising at least the following steps:

a) creating a texture in at least a partial area of the composite metal foil;

b) applying a pre-sealing tape onto the composite metal foil, whereby the texture is at least partially covered by the pre-sealing tape;

c) connecting the pre-sealing tape to the composite metal foil to form a composite body; and

d) cutting the composite body to the predefined finished contour,

whereby, prior to step a), the composite metal foil is inserted into a shaping device having a recess, and

whereby the texture on the composite metal foil is created in step a) by means of an insert in a hold-down device in the shaping device.

2. The method according to claim 1 , whereby the pre-sealing tape is connected to the composite metal foil by means of adhesion brought about by the texture that has been previously created.

3. The method according to claim 1 , whereby, prior to step a), the composite metal foil is shaped by means of deep-drawing.

4. The method according to claim 3 , whereby the composite metal foil is shaped in a method step while it is inside the recess.

5. The method according to claim 1 , whereby a composite aluminum foil is used as the composite metal foil.

6. The method according to claim 1 , whereby a foil thickness between approximately 120 μm and 180 μm is selected for the composite metal foil.