Multilayer film for lead tab and secondary battery comprising same

• Main Authors: CHA SUN O, SEO NAM SEOK, KIM WON HEON, WOO JE MIN, LEE CHUNG WON, AHN DONG IL, LEE GYEONG EUN
• Format: Patent
• Language: English; Korean
• Published: 29.03.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TRANSPORTING

The present invention relates to a multilayer film comprising an outer layer, a middle layer, and an inner layer. The present invention relates to the multilayer film for a lead tab and a secondary battery including the same. The multilayer film has a total thickness of 200 to 400 μm and a thickness of the middle layer is 35 to 60% of the total thickness of the multilayer film. 본 발명은 외층; 중간층; 및 내층;을 포함하는 다층 필름으로, 상기 다층 필름은 총 두께가 200 내지 400 ㎛이고, 중간층의 두께가 다층 필름 총 두께의 35 내지 60%인 것을 특징으로 하는 리드 탭용 다층 필름과 이를 포함하는 이차전지에 관한 것이다.