Pouch type secondary battery
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United States of America Patent
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Feb 22, 2022
Grant Date -
Jan 2, 2020
app pub date -
Aug 9, 2018
filing date -
Sep 7, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A pouch type secondary battery includes: an electrode assembly having an electrode including a positive electrode, a negative electrode, and a separator laminated therein; a battery case having a pouch shape to accommodate the electrode assembly; an electrode tab connected to the electrode and protruding from one side of the electrode; a first electrode lead having one end connected to the electrode tab; a second electrode lead having one end connected to the other end of the first electrode lead and the other end protruding to outside the battery case; and a connection part bonding the first electrode lead to the second electrode lead to connect the first and second electrode leads to each other. In at least one of the first and second electrode leads, a notch is on a bonding surface on which the first and second electrode leads are bonded together through the connection part.
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