Electronic cigarette light-up circuit and ashtray based on electronic cigarette light-up circuit

[0028] Example 1

[0029] Such as figure 1 As shown, an electronic cigarette lighter circuit is mainly composed of a control chip U1, a transistor Q1, and a transistor Q2. The P pole is connected to the LED1 pin of the control chip U1, and the N pole is connected to the GND pin of the control chip U1. , The P pole is connected to the VDD pin of the control chip U1, the N pole is connected to the GND pin of the control chip U1 through the resistor R1, the anode is connected to the P pole of the light emitting diode D1, and the cathode is connected to the signal light LED The N pole of the capacitor C1 is connected to the AT pin of the control chip U1, and the other end is connected to the heating wire RT1 of the transistor Q2. The P pole is connected to the positive electrode of the capacitor C1, and the N pole is connected to the transistor. The photodiode D2 connected to the collector of Q1, a resistor R2 set in parallel with the photodiode D2, and a resistor R3 connected in series between the base and emitter of the transistor Q2; among them, the GND pin of the control chip U1 and The SW pin of the control chip U1 is connected and grounded, the base of the transistor Q1 is connected to the collector, the collector of the transistor Q1 is connected to the collector of the transistor Q2, and the emitter of the transistor Q1 is connected to the base of the transistor Q2 , The VCC pin of the control chip U1 is used as the charging input terminal of the electronic cigarette lighter circuit and is connected with a USB interface, and the positive electrode of the capacitor C1 is used as the power input terminal of the electronic cigarette lighter circuit and is connected with a battery.

[0030] The positive electrode of the battery is connected with the power input end of the electronic cigarette lighter circuit. The positive terminal of the USB interface is connected with the charging input terminal of the electronic cigarette lighter circuit, and the negative terminal of the USB interface is connected with the negative terminal of the battery.

[0031] The model of the control chip U1 is S089. The chip adopts ASIC design, in the power saving mode, the static current is small, and it can also control the power-on time to better protect the normal use of the product, avoid the circuit from being energized for a long time, and better reduce the power consumption and the probability of damage to various components ; At the same time, the chip also has built-in short-circuit protection, under-voltage protection, over-heat protection, over-current protection and other functions, which improve the safety of the product. The chip can light up the signal lamp when the power is turned on, so that users can better understand the circuit working condition

[0032] When the circuit is working, the battery continues to supply power to the circuit. When there is no obstruction between the light-emitting diode D1 and the photodiode D2, the light-emitting diode D1 will illuminate the photodiode D2, so that the resistance of the photodiode D2 increases, the transistor Q1 is not triggered, and no current flows through the heating wire RT1 No fever. When the light-emitting diode D1 and the photodiode D2 are blocked by an object, the photodiode D2 loses light and its resistance decreases. The current passes through the photodiode D2 and is amplified at the Darlington tube composed of the transistor Q1 and the transistor Q2. The amplified current flows through the heating wire RT1 to make it energized to generate heat to ignite the cigarette; when the current passes through the heating wire to trigger the AT pin of the chip U1, the LED1 pin of the chip U1 outputs the current power signal LED, so that the user can Know the operation of the product.

[0033] When the battery needs to be charged, connect the USB interface to the corresponding USB charging device, and the current enters the VCC pin of the chip U1 through the UBS interface, and then charges the battery through the VDD pin of the chip U1. Due to the independence of the circuit, It can still work to light up cigarettes during charging.

[0034] Example 2

[0035] Such as figure 2 , 3 As shown, an ashtray based on an electronic cigarette lighter circuit includes an ashtray body and an electronic cigarette lighter circuit arranged inside the ashtray body. The ashtray body is also provided with an indicator light position 2, a cigarette inlet 3 and a USB interface Bit 4.

[0036] The ashtray main body is composed of an ashtray upper shell 1 and an ashtray bottom plate 5, and the ashtray upper shell 1 and the ashtray bottom plate 5 are solidly integrated. The upper shell 1 of the ashtray can be designed into different shapes according to actual needs, and can be designed into ordinary geometric shapes or various more aesthetic shapes.

[0037] A fixing hole 6 is provided on the ashtray bottom plate 5, and the ashtray bottom plate 5 and the ashtray upper shell 1 are fixed together by screws. The ashtray bottom plate and the ashtray upper shell are fixed by screws, which can be quickly disassembled when needed, and has good stability when fixed. In addition to the above fixing method, the ashtray bottom plate 5 and the ashtray upper shell 1 can also be fixed together by pasting or using clips.

[0038] The cigarette inlet 3 is arranged on the ashtray upper shell 1, and the top opening of the cigarette inlet 3 is arranged on the upper surface of the ashtray upper shell 1, and the heating wire RT1 in the electronic cigarette lighter circuit is arranged on the cigarette inlet At the bottom of 3, the light emitting diode D1 and the photodiode D2 in the electronic cigarette lighter circuit are arranged on the side wall of the cigarette inlet 3 in cooperation with each other. The diameter of the above-mentioned smoke inlet hole is slightly larger than that of ordinary cigarettes, and the diameter of the smoke inlet hole can be enlarged according to requirements so that it can be used for cigar lighting. The location of the light emitting diode D1 and the photodiode D2 must be at least 1-2CM away from the top of the smoke inlet to avoid false triggering and improve the safety of the product.

[0039] The indicator light position 2 is arranged at any position on the outer wall of the upper shell 1 of the ashtray, and the signal light LED in the electronic cigarette lighter circuit is arranged in the indicator light position 2. The best setting position of the indicator light is the upper outer wall of the upper shell of the ashtray, which can be easily observed when the user uses it.

[0040] The USB interface position 4 is arranged on the side wall of the ashtray upper shell 1, and the USB interface of the electronic cigarette lighter circuit is arranged at the USB interface position 4.