Wound cell stack design for enhanced battery performance
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United States of America Patent
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May 7, 2002
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app pub date -
Oct 11, 2001
filing date -
Mar 4, 1999
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Abstract
An electrochemical cell comprising an electrode assembly in which overlayed electrodes are wound together in a bi-directional fashion yielding a high energy density cell stack with low internal impedance is described. The overlayed electrodes are such that either a single cathode is paired with two anodes or a single anode is paired with two cathodes prior to winding of the cell stack assembly. For example, the electrode assembly is formed by overlapping the two anode electrodes on opposite sides of the cathode electrode across a midportion and then winding the electrode strips bi-directionally about the midportion.
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