Stepped electrochemical cells with folded sealed portion
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United States of America Patent
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Nov 9, 2021
Grant Date -
Sep 28, 2017
app pub date -
Mar 25, 2016
filing date -
Mar 25, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A pouched energy storage device can include a cell housing portion and a sealed portion. The device can also include a stack of electrodes housed within an inner region of the cell housing portion. Each electrode can have dimensions of width, length, and thickness. One or more electrodes can have at least one of the dimensions smaller than a corresponding dimension of other electrodes in the stack of electrodes. The device can also include an indentation on the cell housing portion adjacent the sealed portion. The indentation can form a stepped region in the inner region that is complimentary to the one or more electrodes having at least one of the dimensions smaller than a corresponding dimension of other electrodes in the stack of electrodes. The sealed portion can be folded onto the cell housing portion so that at least a part of the sealed portion resides in the indentation.
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