Battery unit
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United States of America Patent
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Nov 7, 2017
Issued Date -
N/A
app pub date -
Jan 11, 2012
filing date -
Jan 11, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
The battery unit (1) includes a flat battery (2) having a cylindrical positive electrode can (10) with a bottom and a cylindrical negative electrode can (20) with a bottom that covers an opening side of the positive electrode can and having a side wall of the positive electrode can on the opening side fitted to an outer circumferential surface of a side wall of the negative electrode can and a substrate (61) provided on a flat surface of one of the negative electrode can and the positive electrode can and mounted with circuit components (62) thereon. The other of the negative electrode can and the positive electrode can that has a flat surface on an opposite side to the substrate in a thickness-wise direction of the flat battery serves as an external terminal for one of a positive electrode and a negative electrode.
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