| 摘要 |
There is provided a cap assembly for a rectangular battery comprising a cap cover in which a vent hole is formed, a positive electrode terminal whic h has a through hole leading to the discgarge hole and combines with the upper porti on of the cap cover having an insulating plate interposed therebetween, a positive electrode tab connected to a positive electrode of an electrode assembly, a conductive safety vent support having a hollow rivet protrusion passing thro ugh the vent hole of the cap cover and the through hole of the positive electrode te rminal to be coupled to the positive electrode terminal, and a conic conductive saf ety vent whose upper circumferential portion combines with the bottom surface of thesafety vent support to seal the hollow of the rivet protrusion, and whose vertexcontacts the upper surface of the positive elect rode tab, wherein the vertex of the safety vent separates from the positive electrode tab and the safety vent is destroyed when the internal pressure of the battery increases to a predeterm inedlevel. |
