Pouch-type secondary battery including electrode lead having current limiting function
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United States of America Patent
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May 26, 2020
Grant Date -
Apr 12, 2018
app pub date -
May 4, 2016
filing date -
May 7, 2015
priority date (Note) -
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Abstract
A pouch-type secondary battery includes an electrode assembly equipped with an electrode tab, an electrode lead connected to the tab, a pouch housing accommodating and sealing the electrode assembly such that the lead is exposed partly and equipped with a sealing zone at the edge thereof, a first sealant interposed between the top surface of the lead and the inner surface of the housing and a second sealant interposed between the lower surface of the lead and the inner surface of the housing. The lead includes a joint portion joined to the tab, a terminal portion exposed to the outside of the housing and a fuse portion therebetween. The fuse portion includes a separating groove separated from the sealing zone toward the joint portion and including at least a horizontal slit and a breaking portion connected to the separating groove for separating the terminal portion from the joint portion.
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