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PROTECTIVE ELEMENT AND SECONDARY BATTERY DEVICE

  • US 20110012704A1
  • Filed: 05/14/2009
  • Published: 01/20/2011
  • Est. Priority Date: 05/23/2008
  • Status: Active Grant
First Claim
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1. A protection element comprising:

  • a soluble conductor which is disposed on an insulation baseboard, which is connected to a power supply path of a device targeted to be protected, and which causes a blowout when a predetermined abnormal electric power amount is supplied;

    an insulation cover member which is mounted on the baseboard, and which covers the soluble conductor with a predetermined space; and

    a flux coated on a surface of the soluble conductor and positioned in the space;

    wherein, in a case where the abnormal electric power amount is supplied to the device targeted to be protected, the soluble conductor causes the blowout, and a current path thereof is shut off; and

    wherein said protection element comprises a stepped portion which is formed on an interior face of the insulation cover member opposite to the soluble conductor, for retaining the flux at a predetermined position in the space in contact with the flux.

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