Double-control lock key station charging control circuit
The invention relates to a double-control lock key station charging control circuit which comprises a double-control lock key charging module. The double-control lock key charging module comprises a battery charging management chip and a charging state indicating lamp; a BAT pin of the battery charg...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention relates to a double-control lock key station charging control circuit which comprises a double-control lock key charging module. The double-control lock key charging module comprises a battery charging management chip and a charging state indicating lamp; a BAT pin of the battery charging management chip is suitable for being electrically connected with a positive electrode of a lithium battery to be charged, and a grounding pin of the battery charging management chip is suitable for being electrically connected with a negative electrode of the lithium battery; a drain open-circuit charging state output pin of the battery charging management chip is externally connected with a current-limiting resistor, and the current-limiting resistor and the charging state indicating lampare connected between the drain open-circuit charging state output pin and the voltage input pin in series; the drain open-circuit charging state output pin is also externally connected with a pull-upresistor; the pull-up res |
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