Wilson Greatbatch Technologies, Inc.

Greatbatch Ltd.

Wilson Greatbatch Ltd.

Steven Davis

Esther S Takeuchi

Hong Gan

Robert S Rubino

Ashish Shah

David M Spillman

Sally Ann Smesko

Paul W Krehl

Donald Kaiser

Paul Krehl

The current invention describes a lithium/carbon monofluoride (Li/CF) cell capable of delivering sufficient power to supply an ICD or similar demanding device. The cell exhibits the typical excellent long-term stability and predictability of the CFsystem, as well as its high energy density (greater than about 300 Ah/cc, greater than about 600 Wh/cc). Additionally, the cell is capable of delivering about 0.5 W/cc of cathode volume for greater than 5 seconds with a voltage above 1.70 V (FIG.). The following invention embodiments can be applied individually or in conjunction with each other.

Lithium/fluorinated carbon cell for high-rate pulsatlie applications

A battery pack having a first secondary cell and a second secondary cell, preferably of a non-aqueous chemistry, is described. Each secondary cell has a discharge capacity and an internal resistance to a direct charge current. To diminish and alleviate problems associated with extended cycling of battery packs, the internal resistance to the direct charge current and the discharge capacity of each secondary cell is substantially matched. Thereby, the battery packs have longer running voltages and increased energy density.

Matching cells for a battery pack

The minimization or elimination of swelling in lithium cells containing CF as part of the cathode electrode and discharged under high rate applications is described. When CF materials are synthesized from fibrous carbonaceous materials, in comparison to petroleum coke, cell swelling is greatly reduced, and in some cases eliminated. Preferred precursors are carbon fibers and MCMB.

Control of cell swelling by the proper choice of carbon monofluoride (CFx) cathode materials in high rate defibrillator cells

The invention includes a method of using a cell, such as a battery. In a method according to the invention, the cell is charged, discharged, and a voltage of the cell is measured after the discharge period. The measured voltage is compared to a standard voltage, and then the cell is charged again.

Method of using a cell

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Batavia, NY, United States of America

Steven Davis