Rechargeable battery with a jelly roll having multiple thicknesses
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United States of America Patent
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Sep 30, 2014
Grant Date -
Feb 13, 2014
app pub date -
Oct 18, 2013
filing date -
Nov 2, 2010
priority date (Note) -
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Abstract
The disclosed embodiments relate to the design of a battery cell with multiple thicknesses. This battery cell includes a jelly roll enclosed in a pouch, wherein the jelly roll includes layers which are wound together, including a cathode with an active coating, a separator, and an anode with an active coating. The jelly roll also includes a first conductive tab coupled to the cathode and a second conductive tab coupled to the anode. The jelly roll is enclosed in a flexible pouch, and the first and second conductive tabs are extended through seals in the pouch to provide terminals for the battery cell. Furthermore, the battery cell has two or more thicknesses, wherein the different thicknesses are created by removing material from one or more of the layers before winding the layers together.
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