| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inspection method for a welded spot of a battery capable of properly and easily determining the quality of welding of a welded spot of a battery where a first battery component member and a second battery component member are welded. Ž<P>SOLUTION: The inspection method for the welded spot of the battery includes the steps of: irradiating ultrasonic wave irradiating portion 115S containing the surface 115Y of the welded spot 115X of a battery of the outer surface 115c of a sealing member 115 (the second battery component member) with ultrasonic waves transmitted from a probe 12 (an ultrasonic wave transmitter-receiver) and receiving reflected ultrasonic waves reflected by the sealing member 115 and a negative electrode current collecting member 130 (the first battery component member) by the probe 12 (measuring steps S2, S3); and determining the quality of welding of the welded spot 115X from the strength of specified reflected ultrasonic waves of received reflected-ultrasonic waves through the welded spot 115X reflected by the back surface 131b of the negative electrode current collecting member 130 (determining steps S4 to S7). Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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