CN110200326B - A kind of electronic cigarette power incremental control method and system - Google Patents

Abstract

A power incremental control method of an electronic cigarette, which is applied to a control system connected to an atomizing core on an electronic cigarette, comprising: after the atomizing core is connected to work, detecting and obtaining the resistance value of the atomizing core; The value matches the initial corresponding output voltage to the atomizing core; the continuous accumulated working time of the atomizing core is counted; according to the accumulated working time, the output voltage is controlled and adjusted to the atomizing core, wherein the output voltage is positively correlated with the accumulated working time. The technical solution is to adjust the output voltage to the atomizing core and correspondingly adjust the working power of the atomizing core, so that the amount of smoking smoke can be increased at the same smoking time, and the electronic cigarette automatically matches the initial power according to the resistance value of the atomizing core. The power value will change from time to time during work so as to achieve the same smoking time and increase the amount of smoke.

Description

A kind of electronic cigarette power incremental control method and system

technical field

The invention belongs to the technical field of electronic cigarettes, and relates to an incremental control method for electric cigarette power and a control system for realizing the control method.

Background technique

Electronic cigarettes, also known as virtual cigarettes and electronic atomizers, are mainly used to quit smoking and replace cigarettes. They have the same appearance as cigarettes, similar taste to cigarettes, and even more flavor than ordinary cigarettes. Inhale the smoke, inhale the smell and feel it.

The e-liquid used in e-cigarettes is produced with plant extracts, water, and edible flavors as the main raw materials, and is generally stored in e-liquid bottles. Electronic cigarettes generally have two parts: a pod and a cigarette rod. The pod is also called an atomizer. The atomizer includes an atomizing core. The pod part can store the e-liquid, and the e-liquid can be converted into the e-liquid through the atomizing core of the atomizer. Atomization, pods and pods are generally of split design, consumers can choose different pods according to their preferences, and in different pods, the resistance of the atomizing core is different, the existing electronic cigarette, atomization The heating power of the core is generally single, and the user experience is poor. If the heating power of the atomizing core cannot be changed, it is difficult to adapt to different user needs.

Most of the electronic cigarettes in the current technology have a constant heating power when the atomizing core is working. Regardless of the user's suction force or the length of the inhalation time, it is a constant heating power to generate atomization, which is often limited by the oil guide. The longer the user smokes at one time, the less smoke will be produced. It cannot simulate the phenomenon that when smoking a tobacco cigarette, the suction force is large or the inhalation is long, and the smoke volume is large, which makes the user experience insufficient.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a method for increasing the power of an electronic cigarette, which solves the above-mentioned technical problems in the prior art, and achieves the effect that the longer the inhalation time of the user, the greater the increase in the heating power, the more smoke is generated.

In order to achieve the above object, the present invention is achieved through the following technical solutions.

The technical solution of the present invention is an electronic cigarette power incremental control method, which is applied to a control system connected to an atomizing core on an electronic cigarette, including:

After the atomizing core is connected to work, the resistance value of the atomizing core is detected and obtained;

Match the initial corresponding output voltage to the atomizing core according to the resistance value of the atomizing core;

Count the continuous cumulative working time of the atomizing core;

According to the accumulated working time, the output voltage is controlled and adjusted to the atomizing core, wherein the output voltage is positively correlated with the accumulated working time.

The technical solution is to adjust the output voltage to the atomizing core and correspondingly adjust the working power of the atomizing core, so that the amount of smoking smoke can be increased at the same smoking time, and the electronic cigarette automatically matches the initial power according to the resistance value of the atomizing core. The power value will change from time to time during work so as to achieve the same smoking time and increase the amount of smoke.

In an embodiment of the technical solution, the positive correlation between the working time and the output voltage includes:

The output voltage is proportional to the accumulated working time;

Moreover, after the accumulated working time reaches the preset time value, the control output voltage remains unchanged.

In an embodiment of the technical solution, each time the accumulated working time increases by an interval time value, the control output voltage increases by a fixed ratio of the initial corresponding output voltage, and when the accumulated working time reaches the preset time value, the control output voltage is controlled. constant.

In an embodiment of the technical solution, it also includes:

After the atomizing core stops working, the accumulated working time is cleared.

Another technical solution of the present invention is an electronic cigarette power incremental control system, which is connected to the atomizing core and includes:

The impedance detection circuit is used to detect the resistance value of the atomizing core after the atomizing core is connected to work;

The control circuit is used to obtain the resistance value of the atomizing core, match the initial output voltage according to the resistance value, send a control signal to the voltage regulation circuit, and count the cumulative working time of the atomizing core;

The voltage adjustment circuit is used to adjust the output voltage to the atomizing core after receiving the control signal from the control circuit;

Among them, the output voltage is positively correlated with the accumulated working time.

In an embodiment of the technical solution, the control circuit is respectively connected with the impedance detection circuit and the voltage adjustment circuit; the impedance detection circuit is respectively connected with the atomizing core; the voltage adjustment circuit is also connected with the power supply;

The voltage regulating circuit includes a MOS tube voltage regulating circuit and a MOS tube driving circuit. The MOS tube voltage regulating circuit is connected to the power supply, and the output voltage is generated after the power supply is regulated to the atomizing core. The MOS tube driving circuit is connected to the control circuit and receives the control circuit. The control signal drives the MOS tube voltage regulator circuit to adjust the output voltage.

In one embodiment of the technical solution, the MOS transistor driver circuit includes a MOS transistor driver chip U11, the MOS transistor voltage regulator circuit includes three MOS transistors Q4, Q5, and Q6; the input terminal IN of the MOS transistor driver chip U11 receives a control circuit PWM1H signal, its control output pin HG1 is connected to the gates of MOS transistors Q4 and Q5 at the same time, the MOS transistors Q4 and Q5 are connected in parallel and the drain is connected to the power supply at the same time, and the source is connected in parallel to the output terminal VOUT as the output voltage, which is connected to the atomizing core; The control output pin LG1 of the tube driver chip is connected to the gate of the MOS tube Q6, the drain of the MOS tube Q6 is connected to the sources of the MOS tubes Q4 and Q5 at the same time, and the sources are grounded.

In an embodiment of this technical solution, the sources of the MOS transistors Q4 and Q5 are used as the output terminal VOUT of the output voltage after passing through the inductor L2, and the output terminal VOUT also passes through four capacitors C29, C30, C31, C39 connected in parallel with each other. back ground.

In an embodiment of the technical solution, the impedance detection circuit includes an impedance measurement chip U13, the signal input pin IN+ of the impedance measurement chip U13 is connected to the output voltage of the voltage adjustment circuit, and the signal input pin IN- is connected to the current limiting resistor R42 in parallel with each other. And R43 is followed by the output voltage of the voltage regulation circuit, and its output terminal OUT is connected to the control circuit after the resistor R47.

Description of drawings

In order to explain the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments of the present invention. The drawings in the following description are only for some embodiments. For those of ordinary skill, other drawings can also be obtained from these drawings without creative labor.

FIG. 1 shows a step diagram of a power increasing control method according to Embodiment 1 of the present application.

FIG. 2 shows a processing flow chart of the power increasing control method according to Embodiment 1 of the present application.

FIG. 3 shows a structural principle block diagram of the electronic cigarette according to the second embodiment of the present application.

FIG. 4 shows a circuit diagram of a power supply circuit key module of the electronic cigarette according to the second embodiment of the present application.

FIG. 5 shows a circuit diagram of the impedance detection circuit of the electronic cigarette according to the second embodiment of the present application.

FIG. 6 shows a circuit diagram of the control circuit of the electronic cigarette according to the second embodiment of the present application.

FIG. 7 shows a circuit diagram of the MOS tube driving circuit of the electronic cigarette according to the second embodiment of the present application.

FIG. 8 shows a circuit diagram of the MOS tube voltage regulating circuit of the electronic cigarette according to the second embodiment of the present application.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore It should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist. , is not within the scope of the disclosure of the present invention.

In the following description, suffixes such as "module", "component", "component" or "unit" are used only to facilitate the description of the present invention, and have no specific meaning per se. Therefore, it can be used in combination.

The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

As shown in FIGS. 1 to 2 , the first embodiment of the present application is a method for increasing the power of an electronic cigarette, which is applied to an electronic cigarette control system to control the working power of the atomizing core, and includes the following steps:

S1. After the atomizing core is connected to work, detect and obtain the resistance value of the atomizing core;

The atomizing core is the e-liquid atomizing part of the electronic cigarette. It is connected to the battery and starts to work after the atomizing core is powered on. The atomizing core has a fixed resistance value, and the resistance range of the heating wire of the atomizing core is selected. It is 0.06Ω-5Ω, and its corresponding heating power range is 2w-95w.

S2. Match the initial corresponding output voltage to the atomizing core according to the resistance value of the atomizing core;

After obtaining the resistance value of the atomizing core, match the atomizing core with an initial output voltage to make the atomizing core work. The initial output voltage is usually set in advance. For example, the atomizing core needs to work at the power value P , according to the obtained resistance value R of the atomizing core, according to the formula P=UI=U ² /R, it can be known that the initial output voltage U can be recognized, and the size of the output voltage determines the size of the power value P, where U is the fog The voltage value at both ends of the atomizing core, I is the current value flowing through the atomizing core.

S3. Count the continuous cumulative working time of the atomizing core;

When the atomizing core is connected to work, it starts to count the current continuous cumulative working time. One way is to check whether the atomizing core is working by detecting the working current or the working voltage of the atomizing core. The cumulative working time is The continuous continuous working time after one connection, when the current or voltage stops, it will end, waiting for the next reconnection.

S4. According to the accumulated working time, control and adjust the output voltage to the atomizing core, and the output voltage is positively correlated with the accumulated working time;

When smoking, in order to make the inhalation time longer in one inhalation, the power of the atomizing core also increases, and the effect of generating more smoke. According to the cumulative working time of the atomizing core, the output voltage is controlled and adjusted. The output voltage is proportional to the accumulated working time; and, after the accumulated working time reaches the preset time value, the control output voltage remains unchanged.

In this embodiment, when the accumulated working time increases by one 0.5 second, the control output voltage increases by 2% of the initial corresponding output voltage, and when the accumulated working time reaches 8 seconds, the control output voltage remains unchanged, that is, the output The voltage can be increased by up to 32%. In other embodiments, the interval time and the increase value of the output voltage can also be adjusted and selected as required.

S5. After the atomizing core stops working, reset the accumulated working time;

After the atomizing core stops working, reset the accumulated working time of the last time, and wait for the next reconnection.

As shown in Figure 3, the second embodiment is an electronic cigarette, including an atomizing core 1, a battery assembly 2, and a power incremental control system for controlling the operation of the atomizing core. The power incremental control system includes a control circuit 3, an impedance detection Circuit 4, voltage regulation circuit 5 and power supply circuit 6, the battery assembly provides power for the atomizing core and the control system, wherein the control circuit is respectively connected with the impedance detection circuit and the voltage regulating circuit, and the impedance detection circuit is connected with the atomizing core; The voltage regulation circuit is also connected to the power supply circuit.

As shown in Figure 4, the power supply circuit is used to process the output power of the battery assembly and convert it into different voltages to supply other components. The power supply circuit also includes a button module, which is used to switch the power supply of the electronic cigarette, such as 4 is a circuit diagram of the button module of this embodiment. In other embodiments, the power supply circuit may further include a sensor module. The sensor module is used to sense inhalation, connect the power of the atomizing core, and make the atomizing core work.

As shown in Figure 5, the impedance detection circuit is used to detect the resistance of the atomizing core after the atomizing core is turned on and working. The impedance detection circuit includes an impedance measurement chip U13, and the signal input pin IN+ of the impedance measurement chip U13 is connected to the voltage regulator. The output voltage VOUT of the circuit, the signal input pin IN- is connected to the output voltage VOUT of the voltage regulation circuit through the two current limiting resistors R42 and R43 in parallel with each other, and the signal input pin IN- is also connected to the electrical connection terminal F+ of the atomizing core. connected.

The two ends of the atomizing core are connected to the electric terminal F+ and the electric terminal F- respectively. When the atomizing core is working, the output voltage VOUT will form a current path to the ground through the current limiting resistors R42 and R43 and the atomizing core, and Since the current limiting resistors R42 and R43 are connected in parallel, the two ends of the parallel connection are respectively connected to the two signal input pins IN+ and IN- of the impedance measurement chip U13, that is to say, the voltage difference between the two signal input pins IN+ and IN- It is the voltage across the current limiting resistors R42 and R43. By detecting the voltage across the current limiting resistors R42 and R43, the resistance value of the atomizing core can be detected.

The output pin OUT of the impedance measurement chip U13 is connected to the processor CPU of the control circuit in FIG. 6 through the resistor R47, and transmits the RES ADC1 signal with resistance value information to the processor CPU of the control circuit.

As shown in Figure 6, the control circuit is used to obtain the resistance value of the atomizing core, match the initial output voltage according to the resistance value, send a control signal to the voltage regulation circuit, and count the cumulative working time of the atomizing core. The control circuit includes a processor CPU. The PA1 pin of the processor CPU receives the resistance value of the atomizing core from the impedance measurement chip U13, matches the initial output circuit VOUT, and sends a PWM1H pulse signal through the PA9 pin to control the voltage output of the voltage adjustment circuit. . At the same time, the control circuit also starts to count the accumulated working time of the atomizing core according to the power-on trigger signal such as the power supply circuit.

As shown in Figures 7 and 8, the voltage adjustment circuit is used to adjust the output voltage to the atomizing core after receiving the control signal from the control circuit. The voltage regulating circuit includes a MOS tube voltage regulating circuit 6 and a MOS tube driving circuit 7, wherein the MOS tube driving circuit includes a MOS tube driving chip U11, and the MOS tube voltage regulating circuit includes three MOS tubes Q4, Q5 and Q6.

The input pin IN of the MOS transistor driver chip U11 receives the PWM1H signal of the processor CPU of the control circuit, and its control output pin HG1 is simultaneously connected to the gates of the MOS transistors Q4 and Q5. The MOS transistor Q4 and the MOS transistor Q5 are connected in parallel and the drain is simultaneously connected to The power output terminal VBAT of the power supply circuit, the MOS transistor Q4 and the source of the MOS transistor Q5 are connected in parallel; the control output pin LG1 of the MOS transistor driver chip is connected to the gate of the MOS transistor Q6, and the drain of the MOS transistor Q6 is connected to the MOS transistor at the same time. Q4, the source of the MOS transistor Q5, and the source of the MOS transistor Q6 are grounded.

The sources of the MOS transistors Q4 and Q5 are connected to the atomizing core as the output voltage VOUT after passing through the inductor L2. At the same time, the output voltage VOUT is also grounded after four parallel capacitors C29, C30, C31, and C39 to realize the output voltage VOUT. stabilizing filter. In this embodiment, the three MOS transistors Q4, Q5, and Q6 are eight-pin SMD MOS transistors.

The control process of increasing the power of the electronic cigarette in this embodiment is that when the atomizing core is powered on and working, the impedance measurement chip U13 will detect the resistance value of the atomizing core, and transmit the RES ADC1 signal with resistance value information to the output pin OUT. The processor CPU of the control circuit, the processor CPU automatically matches the initial working voltage of the atomizing core according to the resistance value, and controls the MOS driver chip through the PWM1H pulse signal. The MOS driver chip outputs the HG1 signal and the LG1 signal to control the three MOS tubes Q4, The gate operating voltages of Q5 and Q6 are used to control the initial output voltage VOUT by using three MOS transistors.

When the cumulative working time increases by 0.5 seconds, the processor CPU controls the MOS transistor driver chip through the PWM1H pulse signal, and the MOS transistor driver chip outputs the HG1 signal and the LG1 signal to control the gate operating voltage of the three MOS transistors Q4, Q5, and Q6. The output voltage VOUT is increased by 2% of the initial corresponding output voltage, and the output voltage VOUT can be changed with the accumulated working time. When the accumulated working time exceeds 8 seconds, the PWM1H pulse signal is controlled to be stable, so that the output voltage VOUT is stable and unchanged. , that is, the output voltage VOUT can be increased by up to 32%.

In the description of this specification, reference is made to the description of the terms "one embodiment", "some embodiments", "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. It is intended that a particular feature, structure, material or characteristic described in connection with this embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above content is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art to which the present invention pertains, some simple deductions or substitutions can be made without departing from the concept of the present invention.

Claims (3)

1. an electronic cigarette power incremental control system, is characterized in that, comprises: The impedance detection circuit is used to detect the resistance value of the atomizing core after the atomizing core is connected to work; The control circuit is used to obtain the resistance value of the atomizing core, match the initial output voltage according to the resistance value, send a control signal to the voltage regulation circuit, and count the cumulative working time of the atomizing core; The voltage regulation circuit is used to adjust the output voltage to the atomizing core after receiving the control signal from the control circuit; the output voltage is proportional to the accumulated working time. Every time the accumulated working time increases by an interval time value, the control output voltage increases the initial output. A fixed ratio of the voltage, and after the accumulated working time reaches the preset time value, the control output voltage remains unchanged; The control circuit is respectively connected with the impedance detection circuit and the voltage adjustment circuit; the impedance detection circuit is connected with the atomizing core; the voltage adjustment circuit is also connected with the power supply; The voltage regulating circuit includes a MOS tube voltage regulating circuit and a MOS tube driving circuit. The MOS tube voltage regulating circuit is connected to the power supply, and the output voltage is generated after the power supply is regulated to the atomizing core. The MOS tube driving circuit is connected to the control circuit and receives the control circuit. The control signal drives the MOS tube voltage regulator circuit to adjust the output voltage; The MOS tube driving circuit includes a MOS tube driving chip U11, and the MOS tube voltage regulating circuit includes three MOS tubes Q4, Q5, Q6; the input terminal IN of the MOS tube driving chip U11 receives the PWM1H signal of the control circuit, which controls the output pin HG1 At the same time, the gates of MOS transistors Q4 and Q5 are connected, the MOS transistors Q4 and Q5 are connected in parallel and the drain is connected to the power supply at the same time, and the source is connected in parallel to the output terminal VOUT of the output voltage, which is connected to the atomizer core; the control output pin LG1 of the MOS transistor driver chip is connected to The gate of the MOS transistor Q6 and the drain of the MOS transistor Q6 are connected to the sources of the MOS transistors Q4 and Q5 at the same time, and their sources are grounded; The sources of the MOS transistors Q4 and Q5 pass through the inductor L2 as the output terminal VOUT of the output voltage, and the output terminal VOUT also passes through four capacitors C29, C30, C31 and C39 in parallel with each other and then grounds. 2. The electronic cigarette power incremental control system according to claim 1, wherein the impedance detection circuit comprises an impedance measurement chip U13, and the signal input pin IN+ of the impedance measurement chip U13 is connected to the output voltage of the voltage adjustment circuit, and the signal The input pin IN- is connected to the output voltage of the voltage regulation circuit through the parallel current limiting resistors R42 and R43, and the output terminal OUT is connected to the control circuit through the resistor R47. 3. An electronic cigarette, comprising the electronic cigarette power increasing control system according to any one of claims 1 to 2.

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