INSPECTION METHOD FOR SEALED LEAD-ACID BATTERY

PURPOSE:To detect the scratch and perforation of film surface, the separation of the fused part of a film, the electrification of an outer case and the like by applying voltage between the outer case and the terminal of a battery housed therein, and detecting continuity current or the extent of a vo...

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Bibliographic Details
Main Authors KOIKE KIICHI, KOBAYASHI KENJI, SANO AKIHIKO
Format Patent
LanguageEnglish
Published 22.03.1991
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:PURPOSE:To detect the scratch and perforation of film surface, the separation of the fused part of a film, the electrification of an outer case and the like by applying voltage between the outer case and the terminal of a battery housed therein, and detecting continuity current or the extent of a voltage drop. CONSTITUTION:Voltage is applied between a terminal (a) and an outer case 1, and continuity current or a voltage drop is detected for making inspection. If a scratch, perforation or the like exists on the film surface of a sealed lead acid battery constitution cell 2, electric discharge takes place between the case 1 and a plate during the application of voltage and continuity current increases, thereby enabling inspection.
Bibliography:Application Number: JP19890203302