SECONDARY BATTERY
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United States of America Patent
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Issued Date -
May 2, 2013
app pub date -
Aug 21, 2012
filing date -
Nov 2, 2011
priority date (Note) -
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Abstract
A secondary battery includes a plurality of unit batteries, a circuit board having at least one heat dissipation opening therethrough, and a balancing circuit on the circuit board, the balancing circuit including at least one balancing switch configured to switch ON/OFF states according to an output signal of a control unit, and at least one balancing resistor configured to form a discharge circuit of the plurality of unit batteries according to the ON/OFF states of the balancing switch, at least a part of the balancing resistor being exposed through the at least one heat dissipation opening in the circuit board.
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