Welding method, welding device, metal laminate, electrical component, and electrical product

• Main Authors: SUGA SAYO, SAKAI TOSHIAKI, UMENO KAZUYUKI, MATSUMOTO NOBUYASU, KANEKO MASAMITSU, TERADA JUN, YASUOKA TOMOMICHI, YOON DAE-YEOL, NISHINO FUMIKA
• Format: Patent
• Language: Chinese; English
• Published: 03.02.2023
• 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

In a welding method, for example, a plurality of metal foils that overlap in a first direction on a first surface of a metal member are welded to the metal member by irradiating laser light from the opposite side of the metal member, the laser light including a first laser light having a wavelength of 800 [nm] to 1200 [nm] and a second laser light having a wavelength of 500 [nm] or less, the first laser light having a wavelength of 800 [nm] or more and the second laser light having a wavelength of 500 [nm] or less. A laser beam is irradiated on a second surface of the metal foil farthest from the metal member in the first direction among the plurality of metal foils on the opposite side from the metal member. Furthermore, in the welding method, the wavelength of the second laser beam may be 400 [nm] or more and 500 [nm] or less. 在焊接方法中，例如通过对在金属构件的第一面上沿第一方向重叠的多个金属箔从金属构件的相反侧照射激光，从而将金属构件与多个金属箔焊接，激光包括800[nm]以上且1200[nm]以下的波长的第一激光以及500[nm]以下的波长的第二激光，将激光照射于多个金属箔中的在第一方向上最远离金属构件的金属箔的与金属构件相反的一侧的第二面上。另外，在焊接方法中，也可以是，第二激光