| 摘要 |
PURPOSE: A current blocking device is provided to improve stability to overcharging or abnormal heating by providing uniform fracture pressure. CONSTITUTION: A current blocking device(210) comprises a disk(211); a protrusion part(212) protruded upwards from the center of the disk; a fracture part(213) with a smaller thickness than the thickness of the disk, connecting the protrusion part to the disk; and a plurality of through holes which are formed on the disk to transfer the gas pressure to the safety vent.
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