| 摘要 |
PROBLEM TO BE SOLVED: To perform determination on defective or non-defective product with a high degree of accuracy without causing damages to separators, and to accurately select good products with less losses. SOLUTION: An inspection method for a separator used for a cell with a hydrophilic treatment applied thereto includes a current-value measuring process for applying a constant AC voltage E (V) causing no partial discharge in between a pair of electrodes 11, 12, in order to measure a current value I (mA) across metallic electrodes, under such condition that the front and back sides of the separator 10 is sandwiched by the pair of metallic electrodes 11, 12 with a surfacial area S (cm<SP>2</SP>) and a gap t (mm) between the electrodes; and a withstanding-factor measuring process for measuring a withstanding factor Z (Z=I×t/SE), based on the current value I (mA) measured at the current-value measuring process. The measured separator is screened out as defective if the measured withstanding factor Z is above a predetermined constant level. COPYRIGHT: (C)2010,JPO&INPIT
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