Control circuit and method for a portable charging carrying case for providing uninterruptible power to charge electronic cigarette batteries

A control circuit for an electronic cigarette box, comprising:

• a charge management module,
• an inner battery,
• a control module,
• a voltage booster,
• a battery voltage detective module,
• a charge interface module configured to separately connect to the voltage booster and a charge load,
• a load detective module and
• an indicative module;
• wherein, the control module is separately connected to the charge management module, the inner battery, the voltage booster, the battery voltage detective module, the load detective module and the indicative module, the charge management module is connected to the voltage booster and the inner battery coupled to the battery voltage detective module;
• wherein, the charge management module, inputted a voltage from an external power source, outputs a charge voltage to charge the inner battery and sends a battery charge signal to the control module;
• the inner battery is configure to output a charge voltage when there is no voltage from the external power source;
• wherein, the battery voltage detective module is configured to detect the inner battery voltage and transmit a battery voltage signal to the control module in real time;
• wherein, the load detective module is configured to detect whether or not the charge load is connected and transmit a load detective signal to the control module in real time;
• wherein, the control module, according to the battery voltage signal, the load detective signal and the battery charge signal, controls the voltage booster adjusting the charge voltage and charging the charge load, and further controls the indicative module displaying a charge state of the inner battery in real time;
• wherein the load detective signal is a plugging load signal or an unplugging load signal;
• the charge state includes information of the inner battery such as:
• power level, in charge, full charge, low battery voltage and discharge;
• wherein when the external power source is supplied, the control module receives the battery voltage signal and the battery charge signal, and calculates a power level of the inner battery and further controls the indicative module displaying the power level of the inner battery;
• the control module also controls the indicative module displaying in charge or full charge according to the charge state;
• the control module further controls an operation state of the voltage booster according to the plugging or unplugging load signal;
• wherein when no external power source is supplied, the control module receives the battery voltage signal, calculates a power level of the inner battery according to the battery voltage signal, and further controls the indicative module displaying the power level of the inner battery;
• the control module, when the battery voltage is less than a preset low voltage, further controls the voltage booster stopping operation and the indicative module displaying a low battery voltage;
• the control module, when the battery voltage is greater than or equal to the preset low voltage, controls an operation state of the voltage booster and the indicative module displaying or not displaying discharge due to the plugging or unplugging load signal;
• wherein, the charge interface module comprises a battery bar charge interface and a Micro-USB charge interface;
• wherein the control circuit includes a battery protective module, the battery protective module is connected to the inner battery and is configured to protect the inner battery when over current occurs;
• wherein the control circuit includes an current and full charge detective module, the current and full charge detective module is separately connected to the control module and the charge interface module;
• the current and full charge detective module is configured to detect a charging current to the charge load which is connected to the charge interface module, the control module, according to the charging current, controls the voltage booster operative state and further adjusting the charging current, or controls the voltage booster stopping operation when it judges that the charge load is in full charge state according to the charge current;
• wherein, the control module includes a microprocessor;
• wherein the indicative module includes at least one first LED diode and at least one second LED diode;
• the first LED is configured to display the information of charge in, charge full, low battery voltage or discharge of the inner battery;
• the second LED is configured to display power level of the inner battery;
• wherein, the load detective module includes a key switch and a trigger switch, an end of the key switch is connected to the ground, an end of the key switch is connected to the microprocessor;
• an end of the trigger switch is connected to the negative of the charge interface, an end of the trigger switch is connected to the microprocessor;
• and wherein, the key switch is configured to detect a charge load plugging or unplugging via the Micro-USB charge interface, and the trigger switch is configured to detect a charge load plugging or unplugging via the battery bar charge interface.