Safety circuit for charging devices
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United States of America Patent
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Aug 12, 2014
Grant Date -
Jan 29, 2009
app pub date -
Jul 28, 2007
filing date -
Jul 28, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
Systems and methods for implementing a safety circuit in charging devices are disclosed. In an exemplary embodiment, a method may include closing a latch to stop delivery of a charging current to a battery when voltage produced by the battery indicates that the battery is non-rechargeable. The method may also include dropping a threshold from an initial value for the voltage produced by the battery to a baseline value so that the latch remains closed even if the voltage produced by the non-rechargeable battery drops below the initial value of the threshold. The method may also include resetting the latch each time a battery is connected to the charging device.
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