LASER WELDING DEVICE AND LASER WELDING METHOD
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United States of America Patent
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Issued Date -
Aug 15, 2024
app pub date -
Dec 27, 2023
filing date -
Feb 10, 2023
priority date (Note) -
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Abstract
There is provided a laser welding device that welds an object to be welded including two or more conductors contacting each other. The laser welding device includes: a welding laser irradiation unit that faces a first face of the object, the welding laser irradiation unit welding the object by irradiating the object with laser light; and a preheating device preheating the object. The preheating device includes a first electrode including a first contact part contacting the first face, and a second electrode including a second contact part contacting a second face of the object, the second face being on an opposite side to the first face. The preheating device heats at least part of the object by heat generated when a current flows in the object via the first electrode and the second electrode.
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