×

Medical device having lithium-ion battery

  • US 7,682,745 B2
  • Filed: 10/29/2004
  • Issued: 03/23/2010
  • Est. Priority Date: 10/29/2004
  • Status: Active Grant
First Claim
Patent Images

1. A medical device comprising:

  • a rechargeable lithium-ion battery for providing power to the medical device, the lithium-ion battery comprising;

    a positive electrode comprising a current collector and an active material comprising a material selected from the group consisting of LiCoO2, LiMn2O4, LiNi1/3Co1/3Mn1/3O2, LiAlxCoyNi(1−

    x−

    y)
    O2 where x is between approximately 0.05 and 0.3 and y is between approximately 0.1 and 0.3, LiTixCoyNi(1−

    x−

    y)
    O2 where x is between approximately 0.05 and 0.3 and y is between approximately 0.1 and 0.3, and combinations thereof;

    a negative electrode comprising a foil current collector and an active material comprising a lithium titanate material, the current collector of the negative electrode comprising a material selected from the group consisting of aluminum, titanium, and combinations thereof;

    a liquid electrolyte; and

    a polymeric separator provided intermediate the positive electrode and the negative electrode that includes pores for allowing the liquid electrolyte to flow through the separator;

    whereby the battery is configured for cycling to near-zero-voltage conditions without a substantial loss of battery capacity.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×