BATTERY AND METHOD FOR MANUFACTURING BATTERY
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United States of America Patent
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Issued Date -
Jul 23, 2020
app pub date -
Apr 9, 2020
filing date -
Feb 16, 2011
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Abstract
A manufacturing method of a battery including attaching a first current collector lead to a first electrode plate; attaching a second current collector lead to a second electrode plate; a step of fabricating a wound electrode group by winding the first electrode plate and the second electrode plate around a winding core member with a separator interposed therebetween; accommodating the wound electrode group in a closed-end cylindrical metal case being a first electrode terminal; joining the first current collector lead to an inner sidewall surface of the metal case (step X); joining the second current collector lead to a sealing member being a second electrode terminal; and sealing the metal case, before step X, a joint portion of the first current collector lead with the inner sidewall surface of the metal case is curved in a same direction as a curve of the inner sidewall surface of the metal case.
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