Mandrel for preparation of jelly-roll type electrode assembly
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United States of America Patent
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Sep 13, 2016
Grant Date -
Dec 5, 2013
app pub date -
Aug 6, 2013
filing date -
Mar 31, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed herein is a mandrel configured to be used in a winding process for manufacturing a jelly roll type electrode assembly using a long sheet type stack of a cathode/separator/anode structure, wherein the mandrel is oval in a section perpendicular to a rotational central axis of the mandrel and is divided into a first mandrel part located at one side of a central region of the mandrel, in which an end of the sheet type stack is fixedly fitted, and a second mandrel part located at the other side of the central region of the mandrel, and the first mandrel part and the second mandrel part each include a main body part having a region in which the sheet type stack is fitted in an engaged state and an exchange part, detachably mounted to the main body part, having an end of a major axis of the mandrel.
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