Secondary battery manufacturing method and secondary battery manufacturing apparatus used therefor

• Main Authors: KIM DAE HONG, CHOI NAK SUNG, PARK HYEON UK, KIM GI MAN
• Format: Patent
• Language: English; Korean
• Published: 16.08.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; ELECTRICITY; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The present invention relates to a secondary battery manufacturing method to suppress expansion of fine cracks in a welded area and a secondary battery manufacturing apparatus used for the same and, more specifically, to a secondary battery manufacturing method for manufacturing a secondary battery including a plurality of electronic device taps and electrode leads and a secondary battery manufacturing apparatus used for the same. According to the present invention, the secondary battery manufacturing method comprises: a tab-lead laminate welding step of welding a tab-lead laminate in which a plurality of electrode tabs and electrode leads are stacked to connect the electrode tabs and the electrode leads; and a tab-lead laminate processing step of continuously pressing a welded part in the longitudinal direction to process the welded part of the tab-lead laminate. 본 발명은 이차전지 제조방법 및 이에 이용되는 이차전지 제조장치에 관한 것으로서 보다 상세하게는 복수의 전극 탭 및 전극 리드를 포함하는 이차전지를 제조하는 이차전지 제조방법 및 이에 이용되는 이차전지 제조장치에 관한 것이다. 본 발명은, 복수의 전극 탭과 전극 리드가 적층된 탭-리드 적층체에 용접을 수행하여 상기 전극 탭과 상기 전극 리드를 연결하는 탭-리드 적층체 용접단계; 및 상기 탭-리드 적층체의 용접 부위를 길이 방향을 따라 연속적으로 가압하여 상기 용접 부위를 가공하는 탭-리드 적층체 가공단계를 포함하는 이차전지 제조방법을 제공한다.