Pouch-type secondary battery and method of manufacturing the same
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United States of America Patent
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Oct 22, 2024
Grant Date -
Jan 28, 2021
app pub date -
Dec 10, 2019
filing date -
Dec 18, 2018
priority date (Note) -
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Abstract
A pouch-type secondary battery and a method of manufacturing same are capable of completely protecting a metal layer from moisture or air by forming an insulating coating layer including a conformal coating layer on the metal layer exposed at a cut surface of a battery case. The method includes a first step of preparing a battery case including an upper case and a lower case by cutting a laminate sheet including an outer coating layer, a metal layer, and an inner coating layer; a second step of receiving an electrode assembly between the upper case and the lower case; a third step of forming a sealing portion by contacting outer peripheries of the upper case and the lower case; and a fourth step of forming a conformal coating layer on a side surface of the sealing portion so as to prevent exposure of the metal layer.
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