Two-stage plunger press systems and methods for forming battery cell tabs
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United States of America Patent
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Jul 12, 2022
Grant Date -
Sep 9, 2021
app pub date -
Mar 9, 2020
filing date -
Mar 9, 2020
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Abstract
Presented are metalworking systems for forming metallic workpieces, methods for making/operating such systems, and battery packs with cell terminals bent by a two-stage plunger press. A metalworking system includes a first plunger with a plunger cavity extending through the first plunger's body, and one or more die cavities recessed into the first plunger's contact face. The die cavity includes one surface that contacts and bends a first workpiece a first angle, and another surface that contacts and bends a second workpiece a second angle. A second plunger includes one or more die cavities recessed into the second plunger's contact face. This die cavity includes one surface that contacts and bends the first workpiece a third angle, and another surface that contacts and bends the second workpiece a fourth angle. The second plunger passes through the plunger cavity such that the first and second plungers bend the metallic workpieces in tandem.
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