DC backup power supply system
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United States of America Patent
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Feb 24, 2009
Grant Date -
Sep 22, 2005
app pub date -
May 17, 2005
filing date -
Apr 16, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A DC backup power supply system having a battery a charge-discharge circuit for charging and discharging a power between the battery and a DC line and a control circuit for controlling the charge-discharge circuit, wherein the battery has a number of battery cells and cylindrical portions of the battery cells are laid on an approximately horizontal plane.
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