ELECTRODE ASSEMBLY AND SECONDARY BATTERY COMPRISING THE SAME

The present invention relates to an electrode assembly in which a first electrode, a separator, and a second electrode are stacked and wound, wherein the first electrode includes a current collector and an electrode active material layer provided on the current collector, an edge part of the current...

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Bibliographic Details
Main Authors PARK INBOK, WOO JAE YOUNG, YANG DONGHYEONG
Format Patent
LanguageEnglish
Korean
Published 26.05.2023
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:The present invention relates to an electrode assembly in which a first electrode, a separator, and a second electrode are stacked and wound, wherein the first electrode includes a current collector and an electrode active material layer provided on the current collector, an edge part of the current collector provided on one end of the winding axis of the electrode assembly includes an uncoated unit not provided with an electrode active material layer, and the uncoated unit of the first electrode is bent one or more times from the winding center of the electrode assembly in the outer direction of the electrode assembly. 본 발명은 제1 전극, 분리막 및 제2 전극이 적층되어 권취된 전극 조립체로서, 상기 제1 전극은 집전체 및 상기 집전체 상에 구비된 전극 활물질층을 포함하고, 상기 전극 조립체의 권취축의 일 단부측에 구비된 상기 집전체의 가장자리부는 전극 활물질층이 구비되지 않은 무지부를 포함하며, 상기 제1 전극의 무지부는 상기 전극 조립체의 권취 중심으로부터 상기 전극 조립체의 외곽 방향으로 1회 이상 절곡된 것인 전극 조립체에 관한 것이다.
Bibliography:Application Number: KR20220155692