Pouch-type secondary battery and battery module having thereof

• Main Authors: SEO JAE MAN, SON JEONG SAM, KIM TAE IL, CHUNG GYU JIN
• Format: Patent
• Language: English; Korean
• Published: 09.12.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

According to an embodiment of the present invention, a pouch-type secondary battery includes: an electrode assembly; and a pouch member comprising an accommodating portion configured to accommodate the electrode assembly therein, a sealing portion formed at an edge of the accommodating portion, and an indent portion formed of a cutting edge cut at a plurality of angles and a rounded edge cut to connect the cutting edges adjacent to each other in a portion of the sealing portion corresponding to a vertex of the accommodating portion, thereby solving the problem that the battery capacity is relatively decreased. 본 발명의 일 실시예에 따른 파우치형 이차전지는 전극조립체 및 내부에 상기 전극조립체가 수용되는 수용부, 상기 수용부의 가장자리에 형성된 실링부와, 상기 수용부의 꼭지점 부분에 대응되는 상기 실링부의 부분에 복수의 각도로 절단된 절단변과 서로 이웃하는 절단변들을 연결하게 절단된 라운드변으로 형성된 함몰부를 구비한 파우치부재를 포함할 수 있다.