WELDING METHOD AND WELDING APPARATUS FOR SECONDARY BATTERY, AND MONITORING METHOD AND MONITORING APPARATUS FOR SECONDARY BATTERY WELDING PROCESS

The present invention relates to: a welding method and a welding apparatus for a secondary battery capable of emitting a laser beam into the lower can; and a monitoring method and a monitoring apparatus for a secondary battery welding process capable of checking a welded state during the welding.The...

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Bibliographische Detailangaben
Hauptverfasser:	LEE, Jin Soo, SON, Bu Won, LEE, Jin Yeong
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	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
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Beschreibung
Zusammenfassung:	The present invention relates to: a welding method and a welding apparatus for a secondary battery capable of emitting a laser beam into the lower can; and a monitoring method and a monitoring apparatus for a secondary battery welding process capable of checking a welded state during the welding.The welding apparatus according to the present invention comprises: a laser irradiation apparatus for welding an electrode tab to a lower can by emitting a laser beam to a center hole of the electrode assembly; and a jig for protecting the electrode assembly when the laser beam is emitted.The monitoring apparatus according to the present invention comprises the jig and the laser irradiation apparatus, and the laser irradiation apparatus comprises a welding laser irradiation device, an illumination laser irradiation device, and an image sensor. Here, the welding laser beam and the illumination laser beam are emitted vertically from a top side of the center hole.