| 摘要 |
The present invention relates to a jelly roll-type electrode assembly and, more specifically, relates to a jelly roll-type electrode assembly, which can maximize the performance of a secondary battery by solving the problem due to the expansion of an electrode during charging and discharging. According to the present invention, the jelly roll-type electrode assembly is a jelly roll-type electrode assembly formed by being rolled in a state of a separation sheet and an electrode sheet laminated in an alternate manner. The rolled electrode sheet is formed with a notching groove along the longitudinal direction on an area formed with a curved surface for enabling at least a portion to be separated during the expansion. |
