| 摘要 |
PURPOSE:To quickly and accurately detect the airtightness condition of a battery by measuring the insulating resistance between a positive electrode or a negative electrode and the outer wall of a welded part or a bonded part of a battery jar and a cover, with an insulation resistance tester. CONSTITUTION:One terminal 10a of an insulation resistance tester 10 is connected to a negative terminal 6, for example, and the other terminal 10b to the outer wall of a bonded part 4 of a battery jar 2 and a cover 4, and the contact resistance is measured. If there are pinholes or the like damaging airtightness in a joint part 4 of a battery in which an electrolyte is poured, the electrolyte leaks to the outside, and the insulating resistance between the terminal 6 and the outer wall surface is remarkably lowered. The airtight state of the battery can be detected thereby. By forming the tip of the terminal 10b, which is brought into contact with the outer wall, of the tester 10 in a ciliary state, time required to inspection is shortened to several seconds to several tens of seconds. |
