POUCH-TYPE SECONDARY BATTERY INCLUDING ELECTRODE LEAD HAVING CURRENT LIMITING FUNCTION

• Main Authors: JEONG GI-SU, KIM JIN-YOUNG, JEONG WON-SEOK, CHO SEUNG-SU, CHOI SEUNG-DON, HWANG WON-PILL
• Format: Patent
• Language: Chinese; English
• Published: 05.01.2018
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

Provided is a pouch-type secondary battery which is a pouch-type secondary battery comprising: an electrode assembly having an electrode tab; an electrode lead connected to the electrode tab; a pouchcover material housing and sealing the electrode assembly such that a portion of the electrode lead is exposed, and having a sealing region at the edge thereof; a first sealant interposed between thetop surface of the electrode lead and an inner side surface of the pouch cover material; and a second sealant interposed between the bottom surface of the electrode lead and an inner side surface of the pouch cover material. The electrode lead comprises: a connecting part connected to the electrode tab; a terminal part exposed to the outside of the pouch cover material; and a fuse part between theconnecting part and the terminal part. The fuse part comprises: a separating groove separated from the sealing region towards the connecting part, and at least including a horizontal slit which is parallel to the width directi