| 摘要 |
PROBLEM TO BE SOLVED: To install explosion-proof construction stably operating without increasing cost in an alkaline primary battery of the smallest size having a diameter of 8±0.3 mm. SOLUTION: A resin sealing body 2 sealing the opening end of a battery can 5 in which a power generation element is housed is capable of widening a pressure receiving area receiving inner pressure even in the battery having small diameter by regulating the inner diameter and the outer diameter of a shaft part 2a through which an electron collector 3 is passed and forming the pressure receiving part 2b connecting the shaft part 2a and the sealing part 2c in a cone having a prescribed angle, and by forming a thin part 2f in the pressure receiving part 2b, abnormal increase in the inner pressure in the battery can 5 is detected with the pressure receiving part 2b, the thin part 2f is broken to release the inner pressure to the outside. COPYRIGHT: (C)2006,JPO&NCIPI
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