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US 12,126,032 B2Granted
Method for forming metal composite films for battery cells
AssigneeVolkswagen Aktiengesellschaft
InventorsFrederik Grau, Kartik Jamadar, Christian Theuerkauf
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Abstract
A method for forming a metal composite film for battery cells includes at least the following steps: (a) inserting the metal composite film into a forming apparatus having a recess; (b) fixing the metal composite film in place by closing a film holder; (c) preforming the metal composite film within the recess in a first direction; and (d) final forming of the metal composite film within the recess in a second direction.
Claims6
A method for forming a metal composite film for battery cells,
- comprising at least the following steps:
- a) inserting the metal composite film into a forming apparatus having a first section and a second section that together define a recess, wherein a part of the recess defines a final form, and wherein on at least one side of the recess is mounted an electrical coil configured to emit an electromagnetic pulse;
- b) fixing the metal composite film in place within the recess by closing a film holder;
- c) using at least a first electromagnetic pulse, preforming the metal composite film within the recess in a first direction;
- and
- d) using at least a second electromagnetic pulse, final forming of the metal composite film within the recess in a second direction that is selected to be opposite to the first direction.
3 more elements
Dependencies are inferred from the claim text.