Method and device for producing a prismatic battery cell container
AssigneeSchuler Pressen GmbH
InventorBruno Burkert
Life of this patent
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Abstract
The invention refers to a method and an apparatus (20) for manufacturing of a prismatic unilaterally open battery cell container (21). First an extruded container (41) is formed from a slug (38) by extrusion. The slug (38) consists of a uniform material. The extruded container (41) is then formed by a first ironing in a first ironing station (25) and by a second ironing in a second ironing station (28). During ironing the container is moved by a respective ironing ram (26, 29) only partly through an associated die tool (27, 30) and is reversed when reaching a reversal point (U). After the second ironing a remaining edge (82) of the obtained intermediate container (77) is separated, thereby the battery cell container (21) is obtained.
Claims17
Method for manufacturing a unilaterally open prismatic battery cell container (21) comprising the following steps:
- providing a slug (38) having a length that is at least four to five times longer than the width of the slug (38), the slug (38) having a larger cross-section area in two length end regions adjacent to short sides than in a center region between the two length end regions,
- manufacturing a unilaterally open extruded container (41) by extrusion of the slug (38),
- first ironing of the extruded container (41) into an ironed container (65) in a first ironing station (25), wherein the extruded container (41) is partly moved through a first die tool (27) in working direction (A) and out of the first die tool (27) opposite the working direction (A) in a retracting direction (R) by a first ironing ram (26),
- second ironing of the ironed container (65) into an intermediate container (77) in a second ironing station (28), wherein the ironed container (65) is partly moved through a second die tool (30) in working direction (A) and out of the second die tool (30) opposite the working direction (A) in a retracting direction (R) by a second ironing ram (29),
- separating an upper edge (82) of the intermediate container (77) for forming the battery cell container (21).
Dependencies are inferred from the claim text.