BATTERY VOLTAGE BALANCE APPARATUS AND BATTERY CHARGE APPARATUS
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United States of America Patent
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Issued Date -
May 12, 2011
app pub date -
Sep 27, 2010
filing date -
Nov 12, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A battery voltage balance apparatus including a balance determining unit and a converting unit is provided. The balance determining unit is coupled to a plurality of battery units and determines whether to perform a battery voltage balance process according to battery voltages of each battery units. The converting unit has an energy storage circuit and is coupled to the battery units. In the battery voltage balance process, the converting unit stores energy in the energy storage circuit and selectively charging at least one of the battery units by the energy storage circuit, so that the voltage differences between any two of the battery units are reduced to be lower than a predetermined value or a predetermined percentage.
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