VOLTAGE EQUALIZER FOR BATTERY ASSEMBLY
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United States of America Patent
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Issued Date -
Aug 2, 2012
app pub date -
Sep 19, 2011
filing date -
Jan 28, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A voltage equalizer is applied to balance voltages among multiple battery units that are connected in series as a battery assembly. The voltage equalizer has a transformer, a switch and a controller. The transformer has a primary winding connected to the battery assembly and the controller through the switch, and further has multiple secondary windings connected to the battery units respectively. When the switch is alternately turned on and off, the transformer draws energy from the battery units with the higher voltage and couples the energy to the secondary windings to charge the battery unit with the lower voltage for balancing the voltages of the battery units.
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