Patent ID: 9350181
Filing Date: 2016-05-24
CPC Classification: A24F,H02J,Y02B

Claim Text:
1. An efficient electronic cigarette charging device, comprising an electronic cigarette case and a battery rod; the battery rod including a charging management unit and an electronic cigarette battery unit; wherein the electronic cigarette case includes an electronic cigarette case battery unit, a current sample unit, a micro-control unit, and a voltage regulator unit; wherein the voltage regulator unit is connected to the electronic cigarette case battery unit, the micro-control unit, and the charging management unit respectively, and the current sample unit is connected to the charging management unit and the micro-control unit respectively; wherein the current sample unit is configured to sample actual charging current of the charging management unit, and the micro-control unit is configured to determine whether a difference between default battery constant charging current and the actual charging current is within a preset range, and is further configured to control transmission of a control signal to the voltage regulator unit to adjust a charging voltage outputted to the charging management unit; wherein the voltage regulator unit includes a DC-DC output circuit and a voltage regulation output circuit, the DC-DC output circuit is configured to convert a power voltage provided by the electronic cigarette case battery unit to a stable DC voltage and output the stable DC voltage to the voltage regulation output circuit, and the voltage regulation output circuit is configured to regulate the stable DC voltage according to the control signal and then generate the charging voltage that is regulated; wherein the voltage regulation output circuit includes a MOS transistor and a capacitor, a drain of the MOS transistor is connected to the charging management unit, a source of the MOS transistor is connected to the DC-DC output circuit, a gate of the MOS transistor is connected to the micro-control unit, one end of the capacitor is connected to the drain of the MOS transistor, and the other end of the capacitor is grounded; and wherein the MOS transistor is configured to receive the stable DC voltage from the source thereof and receive the control signal from the gate thereof, and the control signal controls the conduction and cut-off of the MOS transistor, and hence controls the charging voltage.