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Lithium ion rechargeable battery

  • US 20070154789A1
  • Filed: 12/28/2006
  • Published: 07/05/2007
  • Est. Priority Date: 12/29/2005
  • Status: Active Grant
First Claim
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1. A lithium ion secondary battery comprising:

  • a case having an open top end and a closed bottom end;

    an electrode assembly disposed inside the case;

    a cap assembly disposed on the top end of the case, the cap assembly sealing the open top end of the case; and

    a lower insulating plate disposed between the electrode assembly and the bottom end of the case, a recess with a depth formed on a surface of the lower insulating plate.

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