Lewis Roca Rothgerber Christie LLP
Method for manufacturing secondary battery and secondary battery using same
The present invention relates to a method for manufacturing a secondary battery and a secondary battery using the same, which can improve the quality of a cut surface of an electrode plate and improve the reliability of the secondary battery. For example, disclosed is a method for manufacturing a secondary battery, the method comprising: an active material layer forming step of forming an active material layer by coating an active material on both surfaces of a collector plate; an active material layer removing step of removing a part of the active material layer by irradiating a laser beam to the both surfaces of the collector plate; and a cutting step of cutting the collector plate by irradiating a laser beam onto the collector plate from which the active material layer has been removed in the active material layer removing step.
Samsung SDI Co., Ltd.
Won Shik Jung Hyuck
Park Choi