METHOD FOR INSPECTING SECONDARY BATTERY PRECURSOR, ITS INSPECTION DEVICE, AND METHOD FOR MANUFACTURING SECONDARY BATTERY USING THE METHOD

摘要

PROBLEM TO BE SOLVED: To provide a novel inspection method for effectively and reliably inspecting a secondary battery precursor (electrode plate group), a manufacturing method for the secondary battery using the inspection method, and an inspection device for use in the inspection.

SOLUTION: Before filling an electrolyte liquid into between a pair of electrodes, a current flowing in along an inspection voltage being applied while applying the inspection voltage which is constant between the pair of electrodes. When a current value exceeding a reference current value 13 that is previously set is detected in a time period from when voltage application to a normal secondary battery precursor is started to when the current becomes constant, the precursor is determined as being defective.

COPYRIGHT: (C)2004,JPO