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Cell safety valve and cell having same

  • US 20030131880A1
  • Filed: 12/19/2002
  • Published: 07/17/2003
  • Est. Priority Date: 12/20/2001
  • Status: Active Grant
First Claim
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1. A cell safety valve comprising a valve plate having a thickness, an annular-shaped break groove formed on the valve plate, and one or more of break aiding grooves in an inner area of the break groove, wherein the break aiding groove comprises such configurations that remaining thickness of the valve plate at the break aiding groove is thicker than remaining thickness of the valve plate at the break groove, and at least one end of the break aiding groove is connected with the break groove.

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