SECONDARY BATTERY PROTECTION CIRCUIT AND BATTERY DEVICE
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United States of America Patent
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Issued Date -
Mar 31, 2016
app pub date -
Sep 23, 2015
filing date -
Sep 26, 2014
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Abstract
To realize an overcharge detection device capable of bring about a state of reducing current consumption thereof except for when a lithium ion secondary battery becomes overcharged, and provide a secondary battery protection circuit and a battery device low in power consumption and safe. There is provided a secondary battery protection circuit which is provided with a second detection circuit having a detection voltage threshold identical to or lower than a detection voltage threshold of an overcharge detection circuit and reduces current consumption of the overcharge detection device when the voltage of the secondary battery is less than the detection voltage threshold of the second detection circuit.
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