To maintain high reliability, even in a utilization environment where vibration is applied at all times, in a storage element having a structure such that current collection leads, extended to the side of a plate type laminated electrode body, are connected to an external lead terminal through ultrasonic welding.
In the storage element wherein a plurality of current collection leads, extended to the side of the plate-type laminated electrode body 20, are connected to the external lead terminal mechanically and electrically through ultrasonic welding; the current collection leads and the external lead terminal are connected mutually a plurality number of times by ultrasonic welding, and the plurality of welded locations are partially superimposed.
KATSUBE YASUYUKI
UEKI SHINICHI
OGAWA TAKUSHI
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