Electronic cigarette battery reverse connection protection device and method for using the same

1. An electronic cigarette battery reverse connection protection device, comprising: a battery, a switch circuit, an alarm circuit, a discharge control circuit and a load circuit;

wherein the battery is connected with the switch circuit; the switch circuit is connected with the discharge control circuit and the alarm circuit respectively; and the discharge control circuit is connected with the load circuit;

wherein the switch circuit is configured to determine whether the battery is reversely connected according to a power signal provided by the battery; when the battery is reversely connected, the discharge control circuit is turned off, and the alarm circuit is turned on and generates an alarm signal; and when the battery is correctly connected, the discharge control circuit controls the load circuit working;

wherein the switch circuit includes a first switch circuit and a second switch circuit;

the first switch circuit is connected with the discharge control circuit the first switch circuit is configured to turn the discharge control circuit off when the battery is determined as being reversely connected; and

the second switch circuit is connected with the alarm circuit the second switch circuit is configured to turn the alarm circuit on when the battery is determined as being reversely connected; and thereby reminding that the battery is reversely connected.

2. The electronic cigarette battery reverse connection protection device according to claim 1 , wherein, the first switch circuit includes a first MOS transistor, the first MOS transistor is a P type MOS transistor, a gate of the first MOS transistor is connected with a cathode of the battery; a drain of the first MOS transistor is connected with an anode of the battery; and a source of the first MOS transistor is connected with the discharge control circuit.

3. The electronic cigarette battery reverse connection protection device according to claim 1 , wherein, the first switch circuit includes a first MOS transistor, the first MOS transistor is an N type MOS transistor, a gate of the first MOS transistor is connected with an anode of the battery, a drain of the first MOS transistor is connected with a cathode of the battery; a source of the first MOS transistor is connected with the discharge control circuit.

4. The electronic cigarette battery reverse connection protection device according to claim 1 , wherein, the second switch circuit includes a second MOS transistor, the second MOS transistor is a P type MOS transistor, a gate of the second MOS transistor is connected with an anode of the battery; a drain of the second MOS transistor is connected with a cathode of the battery; a source of the second MOS transistor is connected with the discharge control circuit.

5. The electronic cigarette battery reverse connection protection device according to claim 4 , wherein, the second switch circuit includes a diode, a cathode of the diode is connected with the anode of the battery; an anode of the diode is connected with the alarm circuit; and the diode is configured to control the alarm circuit to be turned on and off by unilateral conductivity thereof.

6. The electronic cigarette battery reverse connection protection device according to claim 5 , wherein, the alarm circuit includes a light-emitting diode and a current-limiting resistor, a cathode of the light-emitting diode is connected with the source of the second MOS transistor; an anode of the light-emitting diode is connected with one end of the current-limiting resistor; the other end of the current-limiting resistor is connected with the gate of the second MOS transistor.

7. The electronic cigarette battery reverse connection protection device according to claim 5 , wherein, the alarm circuit includes a light-emitting diode and a current-limiting resistor, a cathode of the light-emitting diode is connected with the anode of the diode; an anode of the light-emitting diode is connected with one end of the current-limiting resistor; the other end of the current-limiting resistor is connected with the cathode of the battery.

8. The electronic cigarette battery reverse connection protection device according to claim 1 , wherein, the second switch circuit includes a second MOS transistor, the second MOS transistor is an N type MOS transistor, a gate of the second MOS transistor is connected with a cathode of the battery; a drain of the second MOS transistor is connected with an anode of the battery; a source of the second MOS transistor is connected with the discharge control circuit.

9. The electronic cigarette battery reverse connection protection device according to claim 8 , wherein, the alarm circuit includes a light-emitting diode and a current-limiting resistor, a cathode of the light-emitting diode is connected with the gate of the second MOS transistor; an anode of the light-emitting diode is connected with one end of the current-limiting resistor; and the other end of the current-limiting resistor is connected with the source of the second MOS transistor.

10. The electronic cigarette battery reverse connection protection device according to claim 9 , wherein, the alarm circuit further includes a buzzer, and a series branch formed by the light-emitting diode and the current-limiting resistor is connected with the buzzer in parallel.

11. An electronic cigarette battery reverse connection protection method, comprising the following steps:

S1, using a switch circuit to detect a power signal provided by a battery;

S2, using the switch circuit to determine whether the battery is reversely connected, if YES, turning to the step S3; if NO, turning to the step S4;

S3, turning off a first switch circuit, and using the first switch circuit to control a discharge control circuit to be turned off;

S4, turning a second switch circuit on, using the second switch circuit to control an alarm circuit to generate an alarm signal, wherein the alarm signal includes flashing light and/or sirens sound alarm;

S5, when the battery is successfully set, using the discharge control circuit to control a load circuit to work.