WO2015113316A1

WO2015113316A1 - Electronic cigarette control circuit supporting selection of heating wire resistance value, and electronic cigarette

Info

Publication number: WO2015113316A1
Application number: PCT/CN2014/072784
Authority: WO
Inventors: 刘秋明
Original assignee: 吉瑞高新科技股份有限公司
Priority date: 2014-01-29
Filing date: 2014-03-03
Publication date: 2015-08-06
Also published as: CN107077112A; CN203630559U

Abstract

An electronic cigarette control circuit supporting selection of a heating wire resistance value, and an electronic cigarette; adding a resistance value detection circuit for a simple heating wire D in the electronic cigarette realizes atomizer power control according to the detected resistance value of the heating wire D, thus reducing production difficulty and production cost while ensuring product consistency. The electronic cigarette control circuit supporting selection of a heating wire resistance value is used in an electronic cigarette consisting of the resistor of the heating wire D and a battery pole, the electronic cigarette comprising a sensor, a controller, a light emitting diode D1, a diode D2, a capacitor C1, a field effect tube Q1, a selection device S1, a selection device S2, a selection device S3, a resistor R1, a resistor R2, a resistor R3 and a resistor R4.

Description

Electronic cigarette control circuit and electronic cigarette with electric wire resistance value selection function

This application claims priority to Chinese Patent Application No. 201420057364.9, entitled "Electronic Smoke Control Circuit with Electric Wire Resistance Value Selection Function and Electronic Cigarette", which was filed on January 29, 2014. The entire contents are incorporated herein by reference. Technical field

The utility model relates to the technical field of electronic cigarettes, in particular to an electronic cigarette control circuit and an electronic cigarette with a heating wire resistance value selection function.

Background technique

Electronic cigarettes are a relatively common type of simulated cigarette electronics, which mainly include atomizers and battery rods. The battery rod supplies electric energy to the atomizer, causes the heating wire in the atomizer to generate heat, and then vaporizes the oil in the oil guiding rope of the atomizer to emit oil mist, thereby achieving the effect of simulating the cigarette.

At present, in the production of electronic cigarettes, in order to save costs, most of the electronic cigarettes do not contain the resistance detecting function of the heating wire. For this type of electronic cigarette, the amount of smoke is controlled by controlling its power, and the control power is controlled by the heating wire resistance. Therefore, in the production, the resistance value of the electric heating wire of the atomizer of a certain product is controlled by a resistance range. Guarantee the product's pass rate by controlling the resistance space. Some of the slightly higher-end products that are not very sensitive to cost also have resistance resistance detection.

For products without resistance detection function, they have higher requirements for the resistance swing range of the atomizer in production, which is easy to increase the production burden, and it is also easier to increase the product cost due to the need for high-precision manufacturing level. Increasing the defective product of the atomizer product; If the resistance range of the heating wire is tolerated, the power of the product is difficult to control, which may cause the difference in the amount of smoke between the products to be too large, which makes the consistency of the product challenge. For products with resistance detection function, it is necessary to add additional components, such as increasing the detection resistance to sample current, which will lead to an increase in product cost. In addition, the increase of control program code, the high cost of detecting resistors, and the increase of components Factors such as increasing the area of the PCB will further affect products with resistance detection capabilities.

Therefore, in view of the above situation, how to realize the resistance detecting function of the electric heating wire of the low-cost atomizer in the electronic cigarette to solve the above problem has become an important technical problem to be solved by those skilled in the art.

Summary of the invention

The utility model discloses an electronic cigarette control circuit with a heating wire resistance value selection function and The electronic cigarette can control the atomizer power according to the detected resistance value of the heating wire D by adding the resistance resistance detecting circuit of the single heating wire D in the electronic cigarette, thereby maintaining product consistency while maintaining product consistency. Reduce the production difficulty and production cost of the product.

The electronic cigarette control circuit with the electric resistance selection function of the electric heating wire is provided in the electronic cigarette composed of the electric resistance of the electric heating wire D and the battery rod, including the inductor, the controller, the light emitting diode D1, and the diode D2. Capacitor Cl, FET Ql, selection device S1, selection device S2, selection device S3, resistor R1, resistor R2, resistor R3 and resistor R4;

a positive pole of the battery is connected to a third pin of the inductor, one end of the resistor R1, a forward input end of the diode D2, and one end of the resistor R3; a second pin of the inductor, a source of the FET Q1, one end of the resistor R2, and one end of the resistor R4;

The controller includes a pin PIN1, a pin PIN2, a pin PIN3, a pin PIN4, a pin PIN5, a pin PIN6, a pin PIN7, a pin PIN8, a pin PIN9, and a pin PIN10; Connected to one end of the capacitor C1 and the inverting input terminal of the diode D2; the pin PIN2 is connected to the second pin of the inductor; the pin PIN3 and the other end of the resistor R3 The other end of the resistor R4 is connected; the pin PIN4 is connected to the gate of the FET Q1; the pin PIN5 is connected to the inverting input terminal of the LED D1; the pin PIN6 is One end of the selection device S1 is connected; the pin PIN7 is connected to one end of the selection device S2; the pin PIN8 is connected to one end of the selection device S3; the pin PIN9 and the resistor R2 are The other end is connected; the pin PIN10 is grounded;

a forward input end of the light emitting diode D1 is connected to the other end of the resistor R1; the other end of the capacitor C1, the other end of the selection device S1, the other end of the selection device S2, and the selection device The other end of S3 is grounded;

One end of the heating wire D is connected to one end of the resistor R3; the other end of the heating wire D is connected to one end of the resistor R4.

Preferably,

The controller is an SNSP2711B chip.

Preferably,

The selection device includes the selection device S1, the selection device S2, and the selection device S3; The selection device is a switching device or two pins that are connected by a shorting block control. Preferably,

The electronic cigarette control circuit further includes a charging interface;

The positive terminal J1 of the charging interface is connected to the positive pole of the battery rod;

The negative terminal J2 of the charging interface is connected to the negative pole of the battery rod.

Preferably,

The electronic cigarette control circuit further includes at least one light emitting diode;

The positive input end of the light emitting diode is connected to the positive pole of the battery rod through a resistor; the reverse input end of the light emitting diode is connected to the pin PIN5.

The electronic cigarette provided by the utility model comprises an atomizer and a battery rod, and further comprises the above-mentioned electronic cigarette control circuit with a heating wire resistance value selection function.

The electronic cigarette control circuit and the electronic smoking article with the function of selecting the resistance of the electric wire of the electric wire have the following beneficial effects:

1. The electronic cigarette control circuit structure of the utility model has the function of selecting the electric resistance of the electric wire, and is easy to produce;

2. Compared with ordinary electronic cigarettes, after increasing the resistance identification circuit, the cost of the product is basically not increased, so that the product function can be increased under the control of the cost, and the competitiveness of the product is increased;

3. In the production stage of electronic cigarette products, the requirements for the resistance swing range of the atomizer in production are relatively less tight, which can reduce the burden of production and reduce the product defect rate;

4. It is convenient for the power control of the electronic cigarette product, reducing the excessive difference in the amount of smoke between the same batch of products, so that the consistency of the product is well satisfied, thereby increasing the excellent pass rate of the product.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and obviously, the attached in the following description The drawings are only some embodiments of the present invention, and those skilled in the art can obtain other drawings according to the drawings without any creative work.

Figure 1 is a circuit diagram of an electronic cigarette control circuit with a resistance value selection function of the electric heating wire;

Figure 2 shows the electronic cigarette control circuit with the resistance selection function of the electric heating wire a circuit diagram of a light emitting diode;

Fig. 3 is a circuit diagram of the electronic cigarette control circuit with the charging function of the electric heating wire resistance value selection function of the present invention.

detailed description

The utility model discloses an electronic cigarette control circuit and an electronic cigarette with a heating wire resistance value selection function, which can realize the detection according to the method of increasing the resistance resistance detecting circuit of the single heating wire D in the electronic cigarette. The resistance of the heating wire D controls the power of the atomizer, thereby reducing the production difficulty and production cost of the product while maintaining product consistency.

Pulse Width Modulation (PWM), called Pulse Width Modulation, is a very effective technique for controlling analog circuits by using the digital output of the processor. It is widely used in measurement, communication, power control and transformation. In many areas.

The technical solutions in the embodiments of the present invention are clearly and in detail described in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. . Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts are within the scope of the present invention.

Referring to FIG. 1 to FIG. 3 , the electronic cigarette control circuit with the electric resistance selection function of the hot wire resistance is applied to the electronic cigarette composed of the atomizer and the battery rod, including the inductor, the controller and the light emitting diode. Dl, diode D2, capacitor Cl, FET Ql, select device S1, select device S2, select device S3, resistor Rl, resistor R2, resistor R3 and resistor R4;

The controller includes a pin PIN1, a pin PIN2, a pin PIN3, a pin PIN4, a pin PIN5, a pin PIN6, a pin PIN7, a pin PIN8, a pin PIN9, and a pin PIN10; Connected to one end of the capacitor C1 and the inverting input terminal of the diode D2; the pin PIN2 is connected to the second pin of the inductor; the pin PIN3 and the other end of the resistor R3 The other end of the resistor R4 is connected; the pin PIN4 is connected to the gate of the field effect transistor Q1; The pin PIN5 is connected to the inverting input terminal of the light emitting diode D1; the pin PIN6 is connected to one end of the selecting device S1; the pin PIN7 is connected to one end of the selecting device S2; a pin PIN8 is connected to one end of the selection device S3; the pin PIN9 is connected to the other end of the resistor R2; the pin PIN10 is grounded;

The working process of the electronic cigarette control circuit with the electric wire resistance value selection function of the utility model is as follows: When smoking, the sensor transmits the smoking signal to the controller, and the controller controls the FET Q1 in the switch assembly to be turned on, thereby The battery rod is powered by the resistance of the heating wire D, so that the resistance of the heating wire D atomizes the oil and the switch indicator D1 is illuminated. The capacitor C1 is used to supply power to the controller when a short circuit occurs between the positive and negative terminals of the charging interface, so that the controller has a buffering time to turn off the FET Q1, thereby avoiding a dangerous situation.

The pin PIN6, pin PIN7 and pin PIN8 of the controller of the utility model are resistor selection bits, and the three resistor selection bits have 8 combinations, for example, it can be 000B, 001B, 010B, 011B, 100B, 101B, 1 respectively. 111B, the above combination can be obtained by controlling the on/off combination of the selection device S1, the selection device S2, and the selection device S3 connected to the pin PIN6, the pin PIN7, and the pin PIN8, respectively. The above controller may use only one or two of the pin PIN6, the pin PIN7 and the pin PIN8 as the resistance selection bit, which may be set according to the production control requirement, and is not limited herein. It should be noted that when different controllers are used, more resistor selection bits may be used for combination, which is not limited herein.

In the production of the detecting resistor, different resistance ranges can be given to each combination or several combinations thereof, and different resistance ranges correspond to different control of the resistance power of the heating wire D by the controller, and the control method of the electronic cigarette Preferably, the controller detects a potential of a pin of the controller for identifying the resistance value of the heating wire D; secondly, the controller controls the flow of the electric wire through the electric wire according to the potential of the pin Average current. Specifically: when the controller is powered on, first detect the potential of the pin PIN6, the pin PIN7 and the pin PIN8, and the combination of the resistance of the heating wire D can be obtained. Therefore, the resistance value of the heating wire D can be determined, for example, it can be within the resistance range corresponding to 010B, and then the controller can control the resistance power of the heating wire D to reach the power range corresponding to the combination, specifically, the power corresponding to 010B can be reached. The range, and thus the adjustment of the heating wire D, can ensure the consistency of the electronic cigarettes having different electric resistances of the heating wire D. The process of the controller controlling the resistance power of the heating wire D to reach the power range corresponding to the combination may include: the controller uses different PWM duty cycles to control the power of different resistance values, so that all products reach the same effective power; For example, for a product with a large resistance of the heating wire D, the controller will increase its PWM duty ratio accordingly. For a product with a small resistance of the heating wire D, the controller will reduce its PWM duty cycle.

It should be noted that the above controller detects the potential of the pin PIN6, the pin PIN7 and the pin PIN8 to obtain the heating wire D, and only one of the methods of obtaining the heating wire D, and can also monitor the heating wire D in real time. The manner of resistance resistance is not limited herein.

Preferably,

The controller is an SNSP2711B chip.

Preferably,

The selection device includes the selection device Sl, the selection device S2, and the selection device S3; the selection device is a switching device or two pins connected by a shorting block control.

The selection device can be a switching device or two pins that are connected by a shorting block control. In the specific implementation, when the selection device is the two pins connected through the short-circuit block control, the pins are soldered on the PCB board. When the port is specifically selected, the short-circuit block is connected to the pin, when the short-circuit block connection of the device S1 is selected. In the upper state, the controller reads the value 0 on the pin PIN6 connected to the selection device S1, and when the selection device S1 removes the short-circuit block, the controller reads the value as 1. In the specific implementation, the short-circuit block can also be replaced by direct soldering, which can further reduce the cost of the circuit of the present invention.

Preferably,

The electronic cigarette control circuit further includes a charging interface;

Preferably,

The positive input end of the light emitting diode is connected to the positive pole of the battery rod through a resistor; The inverting input of the light emitting diode is connected to the pin PIN5.

The electronic cigarette control circuit with the function of selecting the resistance value of the electric heating wire resistance of the present invention is described above. The electronic cigarette control circuit with the function of selecting the resistance value of the electric heating wire resistance of the present invention has the following beneficial effects:

The following describes an embodiment of an electronic cigarette according to an embodiment of the present invention. The electronic cigarette of the present invention includes an atomizer and a battery rod, and further includes the above-mentioned electronic cigarette control circuit with a function of selecting a resistance of the hot wire resistance.

Since the electronic cigarette of the present invention further includes the above-mentioned electronic cigarette control circuit with the function of selecting the resistance of the hot wire resistance, the electronic cigarette of the present invention should also have the same technical effect. The atomizer is an existing atomizer, and the battery rod is an existing battery rod, which will not be described herein.

The electronic cigarette control circuit and the electronic cigarette with the function of selecting the resistance of the hot wire resistance provided by the utility model are described in detail above. The principles and embodiments of the present invention have been described in the context of specific examples, and the description of the above embodiments is merely to assist in understanding the method of the present invention and its core idea. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention. These improvements and modifications also fall within the protection of the present invention. Within the scope.

Claims

Rights request

1. An electronic cigarette control circuit with a heating wire resistance resistance selection function, which is used in an electronic cigarette composed of an atomizer and a battery rod. It is characterized by including a sensor, a controller, a light-emitting diode Dl, and a diode D2. , capacitor Cl, field effect transistor Ql, selection device Sl, selection device S2, selection device S3, resistor Rl, resistor R2, resistor R3 and resistor R4;

The positive electrode of the battery ^ is connected to the third pin of the inductor, one end of the resistor R1, the forward input end of the diode D2, and one end of the resistor R3; the negative electrode of the battery rod is connected to the The second pin of the inductor, the source of the field effect transistor Q1, one end of the resistor R2 and one end of the resistor R4 are connected;

The controller includes pin PIN1, pin PIN2, pin PIN3, pin PIN4, pin PIN5, pin PIN6, pin PIN7, pin PIN8, pin PIN9 and pin PIN10; the pin PIN1 Connected to one end of the capacitor C1 and the reverse input end of the diode D2; The pin PIN2 is connected to the second pin of the inductor; The pin PIN3 is connected to the other end of the resistor R3 and The other end of the resistor R4 is connected; the pin PIN4 is connected to the gate of the field effect transistor Q1; the pin PIN5 is connected to the reverse input end of the light-emitting diode D1; the pin PIN6 is connected to One end of the selection device S1 is connected; the pin PIN7 is connected to one end of the selection device S2; the pin PIN8 is connected to one end of the selection device S3; the pin PIN9 is connected to the resistor R2 The other end is connected; the pin PIN10 is connected to ground;

The forward input end of the light-emitting diode D1 is connected to the other end of the resistor R1; the other end of the capacitor C1, the other end of the selection device S1, the other end of the selection device S2 and the selection device The other end of S3 is connected to ground;

One end of the electric heating wire D is connected to one end of the resistor R3; the other end of the electric heating wire D is connected to one end of the resistor R4.

2. The electronic cigarette control circuit with a heating wire resistance value selection function according to claim 1, characterized in that the controller is an SNSP2711B chip.

3. The electronic cigarette control circuit with a heating wire resistance resistance selection function according to claim 1, wherein the selection device includes the selection device S1, the selection device S2 and the selection device S3;

The selection device is a switching device or two pins connected through a short-circuit block control.

4. The electronic cigarette control circuit with a heating wire resistance resistance selection function according to claim 1, characterized in that, the electronic cigarette control circuit further includes a charging interface;

The positive terminal J1 of the charging interface is connected to the positive terminal of the battery rod;

The negative terminal J2 of the charging interface is connected to the negative terminal of the battery rod.

5. The electronic cigarette control circuit with a heating wire resistance resistance selection function according to claim 1, characterized in that the electronic cigarette control circuit further includes at least one light-emitting diode;

The forward input end of the light-emitting diode is connected to the positive electrode of the battery rod through a resistor; the reverse input end of the light-emitting diode is connected to the pin PIN5.

6. An electronic cigarette, including an atomizer and a battery rod, characterized in that it also includes an electronic cigarette control circuit with a heating wire resistance resistance selection function as described in any one of claims 1 to 5.