Power supply device
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United States of America Patent
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Feb 27, 2018
Issued Date -
N/A
app pub date -
Apr 11, 2014
filing date -
May 10, 2013
priority date (Note) -
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Abstract
A power supply device includes a battery module in which batteries are connected in series; a negative electrode output terminal to which a negative electrode terminal of the battery module is connected; a positive electrode output terminal to which a positive electrode terminal of the battery module and a connection point between predetermined batteries are individually connected through discharging switches; an output voltage detecting circuit for detecting an output voltage; a charging current adjusting circuit for adjusting the charging current of the battery module; thermistors for detecting the state-of-charge of the battery module; and a control device for controlling the charge and discharge of the battery module, wherein the control device includes means for controlling the discharging switches, so that the output voltage is within a specific range, and means for controlling the charging current adjusting circuit on the basis of the state-of-charge of each battery of the battery module.
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