SYSTEM AND METHOD OF RESISTIVE JOINING OF METAL SHEETS FOR A BATTERY CELL
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United States of America
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May 5, 2022
app pub date -
Oct 29, 2020
filing date -
Oct 29, 2020
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Abstract
A method of resistive joining of metal sheets for a battery cell is provided. The method comprises providing an asymmetrical stackup comprising a first set of first metal sheets and a second set of second metal sheets. The first metal sheets arranged in sequence relative the second metal sheets defining the asymmetrical stackup. Each of the first and second metal sheets separated by a coating layer. The first metal sheets include a first material of a first melting point and the second metal sheets include a second material of a second melting point. The coating layer includes a third material of a third melting point. The first melting point is greater than the second melting point. The third melting point is greater than the second melting point and less than the first melting point. The method further comprises heating the first metal sheets to a first temperature to allow solid state bonding of the first metal sheets and to allow solid state bonding of the first set to the second set. The method further comprises heating the second metal sheets to a second temperature to allow fusion bonding of the second metal sheets.
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