2 LITHIUM ION SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME

The present invention relates to a lithium ion secondary battery and a method for manufacturing the same. A lithium ion secondary battery according to an embodiment of the present invention comprises: a positive electrode which is extended along a first direction; a negative electrode which is exten...

Full description

Saved in:
Bibliographic Details
Main Authors SAKAGUCHI SHINICHIRO, MIZUTA MASATOMO, KIMURA AIKA
Format Patent
LanguageEnglish
Korean
Published 06.10.2016
Subjects
Online AccessGet full text

Cover

Loading…
More Information
Summary:The present invention relates to a lithium ion secondary battery and a method for manufacturing the same. A lithium ion secondary battery according to an embodiment of the present invention comprises: a positive electrode which is extended along a first direction; a negative electrode which is extended along the first direction and is disposed opposite to the positive electrode along a second direction orthogonal to the first direction; and a separator which is extended along the first direction, is provided between the positive electrode and the negative electrode, and has a cross-linked structure. The separator includes an opposite region opposite to the positive electrode and the negative electrode along the second direction, and a surplus region not opposite to the positive electrode and/or the negative electrode along the second direction, and the surplus region has lower porosity than the opposite region. 본 개시의 실시형태에 따른 리튬 이온 2차 전지는, 제1 방향을 따라 연장되는 정극과, 상기 제1 방향을 따라 연장되고, 또한, 상기 제1 방향과 직교하는 제2 방향을 따라 상기 정극과 대향하는 부극과, 상기 제1 방향을 따라 신장되고, 상기 정극과 상기 부극 사이에 형성되고, 또한, 가교 구조를 갖는 세퍼레이터를 구비하고, 상기 세퍼레이터는, 상기 제2 방향을 따라 상기 정극 및 상기 부극과 대향하는 대향 영역과, 상기 제2 방향을 따라 상기 정극 및/또는 상기 부극과 대향하지 않는 잉여 영역을 포함하고, 상기 잉여 영역은, 상기 대향 영역보다 낮은 공공률을 갖는다.
Bibliography:Application Number: KR20160029363