CN210153858U

CN210153858U - Novel control mode's touch USB rechargeable lighter

Info

Publication number: CN210153858U
Application number: CN201920540890.3U
Authority: CN
Inventors: 黄冰辉; 吴玉花
Original assignee: Quanzhou Haichuan Semiconductor Co ltd
Current assignee: Quanzhou Haichuan Semiconductor Co ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2020-03-17
Anticipated expiration: 2029-04-19

Abstract

The utility model discloses a novel control mode ' S touch USB rechargeable lighter, including integrated chip, integrated chip ' S T foot electric connection respectively has the touch point of establishing ties with R2 resistance, integrated chip EN foot is established ties there is a switch S1, integrated chip ' S VDD foot and the VDD foot electric connection of charging port, integrated chip ' S OUT foot and heater are established ties, integrated chip ' S BAT foot and power electric connection, integrated chip ' S LED1 foot and the LED lamp D1 that connects, D2, D3, D4 that connect in series, integrated chip ' S LED2 foot and the LED lamp D5 that connects, D6, D7 that connect in series; the utility model discloses lower input voltage is just supported to inside integrated battery charge control circuit and cigar lighter switch, adopts touch switch's novel control mode, adopts independent charging system, and the point cigarette when supporting to charge, chip normal start and control when the low-voltage input.

Description

Novel control mode's touch USB rechargeable lighter

Technical Field

The utility model relates to an electronic cigarette lighter field specifically is a novel control mode's touch electronic cigarette lighter.

Background

The electronic cigarette lighter is also called as an electronic cigarette lighter, and the electronic cigarette lighter can charge the built-in lithium ion battery through an external power supply. Which is a commonly used USB charging interface. The USB socket can be directly plugged into a USB socket of a computer to charge the USB socket, and an AC power supply with the USB socket can also be plugged into the USB socket to charge the USB socket. The charging can be fully performed when the charging time is 2 to 3 hours; the fully charged electronic cigarette lighter can be used for lighting cigarettes, and 4 to 5 seconds are needed for lighting cigarettes once. Because the heating wire generates heat to ignite the cigarette, the cigarette is free of open fire, wind and cold weather.

However, the existing electronic cigarette lighter adopts an MCU chip to control and drive, the MCU chip can work only under a certain power voltage, and when the battery voltage is lower, the MCU is easy to crash; and can arouse the unable reset of MCU chip because battery voltage is less than critical voltage, current cigar lighter adopts the MCU chip to control the drive, needs external low resistance mos pipe as the switch-on of battery and heater, and current cigar lighter needs key switch to open the heater work.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel control mode's touch USB rechargeable lighter to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a novel touch electronic cigarette lighter adopting a control mode comprises an integrated chip, wherein a T pin of the integrated chip is respectively and electrically connected with a touch point and a capacitor C3 which are connected with an R2 resistor in series, one end of the capacitor C3 is electrically connected with GND, an EN pin of the integrated chip is connected with a switch S1 in series, one end of the switch S1 is electrically connected with GND, a VDD pin of the integrated chip is electrically connected with a VDD pin of a charging port, an OUT pin of the integrated chip is connected with a heating wire in series, the other end of the heating wire is electrically connected with GND, a BAT pin of the integrated chip is electrically connected with a power supply, an LED1 pin of the integrated chip is connected with LED lamps D1, D2, D3 and D4 in series, the other ends of the connected LED lamps D1, D2, D3 and D4 are electrically connected with GND, an LED2 pin of the integrated chip is connected with LED lamps D5, D6 and D7 in series, and the connected LED lamps D5 are connected in series, The other ends of D6 and D7 are also electrically connected to GND.

Preferably, the GND pin of the integrated chip is electrically connected with the GND of the ground terminal.

Preferably, the VDD pin of the integrated chip is electrically connected to GND through a series capacitor C2.

Preferably, the GND pin of the charging port is also electrically connected to the GND of the ground terminal.

Preferably, a capacitor C1 is connected in parallel to the power supply.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses control circuit need not the mcu chip, and direct integration can be in very low battery voltage work inside the chip, and the switch mos of circuit integrated battery and heater can reduce peripheral circuit device, reduce cost, and the circuit adopts touch switch control heater work. Touch control simultaneously also can use no EN control, uses the inside normal open of EN chip, adopts the operating condition of two LED display chip: the LED1 shows the working state of the resistance wire, and the LED2 shows the state of the EN pin. The interior of A2 has perfect battery charging function, and has functions of constant current, constant voltage, overcurrent, overvoltage, thermal shutoff and the like. When the voltage of the battery is less than 2.7V, the battery is charged in a trickle mode, so that the battery is prevented from being damaged, and the safety is ensured; when the voltage of the battery is close to 4.2V, the charging current is gradually reduced, and the charging is finished. When the chip is in a high-temperature environment and exceeds an internal set temperature point, the charging current is also reduced along with the temperature rise, and the safety is ensured.

Drawings

FIG. 1 is a schematic circuit block diagram of the present invention;

FIG. 2 is a functional block diagram of the present invention;

fig. 3 is a schematic circuit diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The same reference numbers in different drawings identify the same or similar elements; it should be further understood that terms such as "first," "second," "third," "upper," "lower," "front," "rear," "inner," "outer," "end," "portion," "section," "width," "thickness," "zone," and the like, may be used solely for convenience in reference to the figures and to aid in describing the invention, and are not intended to limit the invention.

Referring to fig. 1-3, the present invention provides a technical solution: a novel touch electronic cigarette lighter adopting a control mode comprises an integrated chip, wherein a T pin of the integrated chip is respectively and electrically connected with a touch point and a capacitor C3 which are connected with an R2 resistor in series, and the touch point is used for controlling the working state of a heating wire in the electronic cigarette lighter; one end of the capacitor C3 is electrically connected with GND, the EN pin of the integrated chip is connected in series with a switch S1, one end of the switch S1 is electrically connected with GND, and the switch S1 can control a switch which can be used by a touch point; the VDD pin of the integrated chip is electrically connected with the VDD pin of the charging port, the OUT pin of the integrated chip is connected with the heating wire in series, the other end of the heating wire is electrically connected with GND, the heating wire can generate heat when being electrified, and then the cigarette is ignited; the BAT pin of the integrated chip is electrically connected with a power supply, the LED1 pin of the integrated chip is connected with the connected LED lamps D1, D2, D3 and D4 in series, the other ends of the connected LED lamps D1, D2, D3 and D4 are electrically connected with GND, the LED2 pin of the integrated chip is connected with the connected LED lamps D5, D6 and D7 in series, the other ends of the connected LED lamps D5, D6 and D7 are also electrically connected with GND, and the LED lamp at the position is used for displaying the working state of the electronic cigarette lighter.

Specifically, the GND pin of the integrated chip is electrically connected with the GND of the ground terminal, so that the circuit can be implemented as a loop, and the integrated chip can stably and normally work.

Specifically, the VDD pin of the ic is electrically connected to GND through the series capacitor C2, and the capacitor C2 is used to prevent the ic from being damaged by voltage fluctuation.

Specifically, the GND pin of the charging port is electrically connected to the GND pin of the ground terminal, so that the charging port can stably and normally operate.

Specifically, a capacitor C1 is connected in parallel to the power supply, and the capacitor C1 is used for filtering out noise generated by the power supply to ensure the stability of the circuit.

The working principle is as follows: when EN is suspended, the touch switch is invalid; when EN is connected to GND, the touch function is active. When the touch is performed for the first time, the heating wire starts to work, and if the touch is not performed for the second time within 9s, the heating wire is turned off after the work starts for 9 s; and if the touch is performed for the second time within 9s of starting the work, the heating wire stops working immediately. Touch control simultaneously also can use no EN control, uses the inside normal open of EN chip, adopts the operating condition of two LED display chip: LED1 shows resistance wire operating condition, and LED2 shows the state of EN foot, and LED1 operating condition: OUT on is, fade-on (time about 1s) -normally-on (time about 8s) -flash twice (1/2 duty cycle, 2 HZ); LED2 operating state: EN to GND is always on and EN is off when suspended. The interior of A2 has perfect battery charging function, and has functions of constant current, constant voltage, overcurrent, overvoltage, thermal shutoff and the like. When the voltage of the battery is less than 2.7V, the battery is charged in a trickle mode, so that the battery is prevented from being damaged, and the safety is ensured; when the voltage of the battery is close to 4.2V, the charging current is gradually reduced, and the charging is finished. When the chip is in a high-temperature environment and exceeds an internal set temperature point, the charging current is also reduced along with the temperature rise, and the safety is ensured.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel control mode's touch USB rechargeable lighter, includes integrated chip, its characterized in that: the T pin of the integrated chip is respectively and electrically connected with a touch point and a capacitor C3 which are connected with an R2 resistor in series, one end of the capacitor C3 is electrically connected with GND, the EN pin of the integrated chip is connected with a switch S1 in series, one end of the switch S1 is electrically connected with GND, the VDD pin of the integrated chip is electrically connected with the VDD pin of a charging port, the OUT pin of the integrated chip is connected with a heating wire in series, the other end of the heating wire is electrically connected with GND, the BAT pin of the integrated chip is electrically connected with a power supply, the LED1 pin of the integrated chip is connected with connected LED lamps D1, D2, D3 and D4 in series, the other ends of the connected LED lamps D1, D2, D3 and D4 are electrically connected with GND, the LED2 pin of the integrated chip is connected with connected LED lamps D5, D6 and D7 in series, and the other ends of the connected LED lamps D5, D6 and D7 are also electrically connected with GND 67.

2. The novel touch electronic cigarette lighter of control mode according to claim 1, characterized in that: and the GND pin of the integrated chip is electrically connected with the GND of the grounding end.

3. The novel touch electronic cigarette lighter of control mode according to claim 1, characterized in that: and the VDD pin of the integrated chip is electrically connected with GND through a series capacitor C2.

4. The novel touch electronic cigarette lighter of control mode according to claim 1, characterized in that: and the GND pin of the charging port is electrically connected with the GND of the grounding end.

5. The novel touch electronic cigarette lighter of control mode according to claim 1, characterized in that: a capacitor C1 is connected in parallel to the power supply.