Titles:
2 - Stack-folding Type Electrode Assembly Comprising Two Kinds of Separators
2종의 분리막을 포함하는 스택-폴딩형 전극조립체
Abstracts:
The present invention relates to an electrode assembly having a structure in which a plurality of unit cells are wound by a sheet-like folding separator, wherein each of the unit cells is bonded to each other by thermal fusion bonding with a lamination separator interposed between the anode and the cathode, And the separator is superior in mechanical properties and thermal properties as compared with the lamination separator.
본 발명은 복수의 단위셀들을 시트형의 폴딩 분리막으로 권취한 구조의 전극조립체로서, 상기 단위셀들 각각은 양극과 음극 사이에 라미네이션 분리막이 개재된 상태에서 상호 열융착에 의해 접합되어 있으며, 상기 폴딩 분리막은 라미네이션 분리막에 비해 상대적으로 기계적 물성 및 열적 물성이 우수한 것을 특징으로 하는 전극조립체에 대한 것입니다.
Applicant:
LG CHEMICAL LTD [KR] (주식회사 엘지화학)
Inventors:
LEE YOUNG HOON [KR] (이영훈)
PARK CHAN KI [KR] (박찬기)
LEE JIN KYU [KR] (이진규)
Title:
ELECTRODE STACK AND BATTERY MANUFACTURING METHOD
Abstract:
Provided is an electrode stack formed by integrating a first separator, a first electrode plate, a second separator, and a second electrode plate. The first separator has a first separator body, and a first bonding layer that is formed on a principal surface of the first separator body and contains first polyethylene particles. The second separator has a second separator body, and a second bonding layer that is formed on a principal surface of the second separator body and contains second polyethylene particles. The number of particles of the first polyethylene particles per unit area of the first bonding layer is larger than the number of particles of the second polyethylene particles per unit area of the second bonding layer.
