Battery pack for miner's cap lamp with charging and discharging control module
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United States of America Patent
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May 20, 2014
Grant Date -
Jul 17, 2008
app pub date -
Jan 14, 2008
filing date -
Jan 12, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A battery pack features a shock-absorbing and sealed construction and an electronic control module that provides automatic recovery circuitry in the event of a short circuit in the load whereby the power is terminated and then restarted at a lower level so that removal of the short circuit may be detected. Full power is restored to the load when the short circuit is removed. In addition, the electronic control module of the battery pack uses the battery pack load, such as a cap lamp, to provide an indication of a low battery charge level. The electronic control module also provides a soft-start feature where the power provided to the bulb is ramped up to avoid current in-rush to the bulb during startup.
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