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|1. (WO2017039398) CABLE-TYPE SECONDARY BATTERY AND METHOD FOR PRODUCING SAME|
|Applicants:||LG CHEM, LTD.
|Title:||CABLE-TYPE SECONDARY BATTERY AND METHOD FOR PRODUCING SAME|
The purposes of the present invention are to significantly improve flexibility, even if an external force is applied to a cable-type secondary battery, by forming a packaging tightly on the outer surface of an electrode assembly and to improve the cycle life properties of the battery by preventing a decrease in the capacity of the battery. The present invention provides a cable-type secondary battery and a method for producing same, the cable-type secondary battery comprising: an electrode assembly comprising an inner electrode, a separation layer formed to surround the inner electrode, and an outer electrode formed to surround the outer surface of the separation layer; and wing parts, which are provided with packagings formed on the upper and lower surfaces of the electrode assembly, with the overlapping parts thereof thermally compressed and sealed, and are formed at the end of the packagings and folded along the circumference of the packagings.