Electronic atomization device and heating control method therefor

Abstract

An electronic atomization device and a heating control method. The heating control method comprises: obtaining a current temperature value of a heating assembly, and comparing the current temperature value with a preset temperature value to obtain a first comparison result (S10); respectively determining heating control signals of the heating assembly in at least two control modes, and comparing the heating control signals in the at least two control modes to obtain a second comparison result (S20); on the basis of the first comparison result and the second comparison result, selecting one of the at least two control modes as a set control mode (S30); and on the basis of the set control mode, determining a corresponding heating control signal, and controlling heating of the heating assembly on the basis of the corresponding heating control signal (S40).

Description

Electronic atomizing device and its heating control method Technical Field

[0001] This invention relates to the field of atomization, and more particularly to an electronic atomization device and its heating control method. Background Technology

[0002] Electronic atomizing devices convert electrical energy into heat energy through a heating element, which heats the aerosol-forming matrix to produce an aerosol for the consumer to inhale. To achieve a superior vaping and flavor experience, precise heating control of the heating element is crucial.

[0003] Existing e-cigarette devices typically only have a single control method, and each control method has a corresponding application scenario. For example, low-end e-cigarette devices generally use power control, while high-end e-cigarette devices use temperature control. In another case, because temperature control ultimately relies on controlling the electrical power of the heating element to achieve the temperature target, which is not direct and convenient, some e-cigarette devices use power control for the first few seconds or tens of seconds after heating is started, and then switch to temperature control after the temperature rises.

[0004] Moreover, each individual control method has its own drawbacks. For example, the drawback of power control is the difficulty in ensuring consistency. This is because electronic atomizing devices using this method operate according to the same power curve each time they heat. When the ambient temperature varies, the temperature transferred to the aerosol-forming matrix will also differ, naturally resulting in differences in taste. In particular, when heating a second aerosol-forming matrix immediately after the first unit of aerosol-forming matrix has dissipated, the heating chamber still has a high residual temperature. Repeating the heating according to the preset power curve at this time can, at best, affect the taste, and at worst, burn the aerosol. The drawback of temperature control is its lack of directness and convenience, and its timeliness is difficult to guarantee. Firstly, because there is a certain distance between the heating element and the aerosol-forming matrix, and there are components such as quartz tubes, ceramics, cotton wicks, and cigarette paper between them, the thermal resistance is not negligible. The heat generated by the heating element is not only time-consuming to transfer to the aerosol-forming matrix, but is also attenuated by thermal resistance. Secondly, the temperature controller itself requires a reaction time. The combined effect of these two factors causes a lag in the temperature change of the aerosol-forming matrix, resulting in less than ideal taste. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an electronic atomizing device and its heating control method, addressing the technical problem that existing electronic atomizing devices only have a single control method and each control method has certain defects.

[0006] The technical solution adopted by this invention to solve its technical problem is: a heating control method for an electronic atomizing device, wherein the electronic atomizing device includes a heating component, comprising:

[0007] First comparison step: Obtain the current temperature value of the heating component and compare the current temperature value with a preset temperature value to obtain a first comparison result;

[0008] The second comparison step is to determine the heating control signals of the heating component under at least two control modes, and compare the heating control signals under at least two control modes to obtain a second comparison result.

[0009] Selection step: Based on the first comparison result and the second comparison result, select one of the at least two control methods as the set control method;

[0010] Control steps: Based on the set control mode, determine the corresponding heating control signal, and control the heating component to heat according to the corresponding heating control signal.

[0011] Preferably, at least two of the control methods include at least two of temperature control, power control, and energy control.

[0012] Preferably, the magnitude of the heating control signal is positively correlated with the magnitude of the control parameters of the corresponding control mode of the heating component;

[0013] The selection steps include:

[0014] When the difference between the current temperature value and the preset temperature value is greater than a first threshold, the control mode corresponding to the smallest heating control signal among the heating control signals under at least two control modes is taken as the set control mode, wherein the first threshold is greater than or equal to 0;

[0015] When the difference between the current temperature value and the preset temperature value is less than a second threshold, the control mode corresponding to the largest heating control signal among the heating control signals under at least two control modes is taken as the set control mode, wherein the second threshold is less than or equal to 0;

[0016] When the difference between the current temperature value and the preset temperature value is greater than or equal to the second threshold and less than or equal to the first threshold, the current setting control mode remains unchanged.

[0017] Preferably, when the set control mode is power control mode, the step of determining the corresponding heating control signal includes:

[0018] Obtain the preset power value of the heating component, and determine the corresponding heating control signal based on the preset power value;

[0019] or,

[0020] When the control mode is set to energy control mode, the step of determining the corresponding heating control signal includes:

[0021] Obtain the preset energy value of the heating component, and determine the corresponding heating control signal based on the preset energy value.

[0022] Preferably, when the set control mode is temperature control mode, the step of determining the corresponding heating control signal includes:

[0023] The current temperature value and preset temperature value of the heating component are obtained, and the corresponding heating control signal is determined based on the current temperature value and preset temperature value.

[0024] or,

[0025] When the control mode is set to power control mode, the step of determining the corresponding heating control signal includes:

[0026] Obtain the current power value and preset power value of the heating component, and determine the corresponding heating control signal based on the current power value and preset power value;

[0027] or,

[0028] When the control mode is set to energy control mode, the step of determining the corresponding heating control signal includes:

[0029] The current energy value and preset energy value of the heating component are obtained, and the corresponding heating control signal is determined based on the current energy value and the preset energy value.

[0030] Preferably, determining the corresponding heating control signal based on the current temperature value and the preset temperature value includes:

[0031] The PID algorithm is used to determine the corresponding heating control signal based on the current temperature value and the preset temperature value.

[0032] Preferably, determining the corresponding heating control signal based on the current power value and the preset power value includes:

[0033] The PID algorithm is used to determine the corresponding heating control signal based on the current power value and the preset power value.

[0034] The present invention also constructs an electronic atomizing device, comprising:

[0035] Heating components for heating aerosol-forming matrices;

[0036] A battery assembly for providing power to the heating assembly;

[0037] A control component, and the control component is configured to perform:

[0038] Obtain the current temperature value of the heating component and compare the current temperature value with a preset temperature value to obtain a first comparison result;

[0039] The heating control signals of the heating component under at least two control modes are determined respectively, and the heating control signals under at least two control modes are compared to obtain a second comparison result;

[0040] Based on the first comparison result and the second comparison result, one of the at least two control methods is selected as the set control method;

[0041] Based on the set control method, a corresponding heating control signal is determined, and the heating component is controlled to heat according to the corresponding heating control signal.

[0042] Preferably, it further includes:

[0043] A switching transistor connected in series with the heating component, and the heating control signal is used to control the switching transistor to turn on or off.

[0044] Preferably, it further includes:

[0045] A temperature detection component for detecting the temperature of the heating assembly to obtain the current temperature value; and / or,

[0046] A power detection component used to detect the power of the heating component to obtain the current power value.

[0047] The technical solution of this invention allows for the selection of a set control method from at least two control methods based on a comparison between the current temperature value and a preset temperature value, as well as a comparison of heating control signals under at least two control modes. This set control method is then used to control the heating of the heating component. In other words, the electronic atomizing device simultaneously employs at least two control methods, selecting the most suitable one for operation. This compensates for the shortcomings of a single control method, resulting in a better inhalation and flavor experience. Attached Figure Description

[0048] To more clearly illustrate the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0049] Figure 1 is a flowchart of a first embodiment of the heating control method for the electronic atomizing device of the present invention;

[0050] Figure 2A is a schematic diagram of the temperature curve in one embodiment of the present invention;

[0051] Figure 2B is a schematic diagram of the power curve in one embodiment of the present invention;

[0052] Figure 2C is a schematic diagram of the energy curve in one embodiment of the present invention;

[0053] Figure 3 is a schematic diagram showing the relationship between a preset temperature value and a current temperature value in one embodiment of the present invention;

[0054] Figure 4 is a circuit diagram of the heating circuit in one embodiment of the present invention;

[0055] Figure 5 is a logic structure diagram of the temperature control loop in one embodiment of the present invention;

[0056] Figure 6 is a logic structure diagram of the power control loop in one embodiment of the present invention. Detailed Implementation

[0057] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some 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 effort are within the scope of protection of the present invention.

[0058] Figure 1 is a flowchart of a first embodiment of the heating control method for the electronic atomization device of the present invention. Firstly, it should be noted that the electronic atomization device includes a control component, a heating component, and a battery component. The battery component provides power to the heating component. The heating component can be, for example, a resistance heating component, an electromagnetic heating component, an infrared heating component, a microwave heating component, etc., and is used to heat the aerosol forming matrix. The control component controls the heating of the heating component.

[0059] As shown in Figure 1, the heating control method of this embodiment includes:

[0060] First comparison step S10: Obtain the current temperature value of the heating component and compare the current temperature value with a preset temperature value to obtain a first comparison result;

[0061] In this step, the current temperature value can be the temperature detected in real time or a temperature value determined by other means. Additionally, the electronic atomizing device stores a preset temperature curve, i.e., a curve showing how the temperature changes over time, as shown in Figure 2A. Therefore, each point in time after heating is initiated corresponds to a preset temperature value. In this step, the first comparison result is obtained by comparing the current temperature value with the preset temperature value.

[0062] Second comparison step S20: Determine the heating control signals of the heating component under at least two control modes respectively, and compare the heating control signals under at least two control modes to obtain a second comparison result;

[0063] In this step, heating control signals determined using various different control methods are compared to obtain a second comparison result.

[0064] Selection step S30: Based on the first comparison result and the second comparison result, select one of the at least two control methods as the set control method;

[0065] Control step S40: Determine the corresponding heating control signal according to the set control mode, and control the heating component to heat according to the corresponding heating control signal.

[0066] In the technical solution of this embodiment, based on the comparison result between the current temperature value and the preset temperature value, and the comparison result of the heating control signals under at least two control methods, one of the at least two control methods can be selected as the set control method, and the heating component is controlled by the set control method. That is to say, multiple control methods exist in the electronic atomization device at the same time, and the most suitable control method can be selected to work. In this way, the defects of a single control method can be made up for, thereby obtaining a better inhalation and taste experience.

[0067] Regarding steps S10 to S40 in the above embodiments, it should be noted that in some applications, steps S10 to S40 can be executed cyclically according to a set control cycle (e.g., 20ms-100ms). That is, at the beginning of each control cycle, based on the comparison result between the current temperature value and the preset temperature value, and the comparison result of the heating control signals under at least two control methods, one of the at least two control methods is selected as the set control method for the current control cycle, and the heating component is controlled using the set control method within the current control cycle. In other applications, steps S10 to S40 can be executed when it is determined that the set internal or external conditions are met. For example, steps S10 to S40 can be started when a trigger signal input by the user through a button or attitude sensor on the electronic atomizing device is received.

[0068] Furthermore, in an optional embodiment, at least two of the control methods include at least two of temperature control, power control, and energy control.

[0069] In some embodiments, it should be noted that the electronic atomizing device stores not only a temperature curve, but also a preset power curve and a preset energy curve. The power curve is a curve showing power changing over time, as shown in Figure 2B; the energy curve is a curve showing energy changing over time, as shown in Figure 2C. The vertical axis of the energy curve represents energy in joules (J), and the horizontal axis represents time in seconds. After the electronic atomizing device starts heating, as heating progresses, the heat absorbed by the aerosol-forming matrix increases, and the energy increases monotonically over time. This energy curve has at least two meanings: first, it indicates the maximum duration the electronic atomizing device can burn without inhalation (i.e., without vaping), corresponding to the horizontal axis value at the rightmost endpoint of the curve; second, it indicates the cumulative energy output by the electronic atomizing device at a given moment. It should be noted that the temperature, power, and energy curves shown in Figures 2A, 2B, and 2C are only schematic diagrams. In actual applications, the temperature, power, and energy curves may vary depending on the specific electronic atomizing device product. Furthermore, there is not necessarily a corresponding relationship between the temperature curve, power curve, and energy curve.

[0070] Furthermore, for temperature control, the goal is to ensure that the actual temperature of the heating element at each moment equals the preset temperature value on the temperature curve for that moment. For power control, the goal is to ensure that the actual power output of the heating element at each moment equals the preset power value on the power curve for that moment. For energy control, the goal is to ensure that the actual energy of the heating element at each moment equals the preset energy value on the energy curve for that moment.

[0071] Further, in an optional embodiment, the magnitude of the heating control signal is positively correlated with the magnitude of the control parameters of the corresponding control mode of the heating component, and the control parameters include at least two of temperature, power, and energy. The selection step S30 includes:

[0072] When the difference between the current temperature value and the preset temperature value is greater than a first threshold, the control mode corresponding to the smallest heating control signal among the heating control signals under at least two control modes is taken as the set control mode, wherein the first threshold is greater than or equal to 0;

[0073] When the difference between the current temperature value and the preset temperature value is less than a second threshold, the control mode corresponding to the largest heating control signal among the heating control signals under at least two control modes is taken as the set control mode, wherein the second threshold is less than or equal to 0;

[0074] When the difference between the current temperature value and the preset temperature value is greater than or equal to the second threshold and less than or equal to the first threshold, the current setting control mode remains unchanged.

[0075] In one specific embodiment, referring to Figure 3, an upper hysteresis loop is set based on a preset temperature value Ts, for example, region A31, according to a first threshold, and a lower hysteresis loop is set based on a second threshold, for example, region A32.

[0076] Referring to Figure 3, when the current temperature value is in region A1, that is, when the difference between the current temperature value and the preset temperature value is greater than the first threshold, it indicates that the actual temperature has reached or far exceeded the preset temperature. In this case, a smaller heating control signal should be selected to better cool the heating component. Therefore, in this situation, the principle of "smallest signal, control" is adopted, that is, the control mode corresponding to the smallest heating control signal among at least two control modes is selected as the set control mode.

[0077] Referring to Figure 3, when the current temperature value is in region A2, that is, when the difference between the current temperature value and the preset temperature value is less than the second threshold, it indicates that the actual temperature has not yet reached or is far from reaching the preset temperature. In this case, a larger heating control signal should be selected to facilitate the heating of the heating component. Therefore, in this situation, the principle of "whoever is larger controls" is adopted, that is, the control mode corresponding to the largest heating control signal among at least two control modes is used as the set control mode.

[0078] Referring to Figure 3, when the current temperature value is in region A31 or region A32, that is, when the difference between the current temperature value and the preset temperature value is greater than or equal to the second threshold and less than or equal to the first threshold, it indicates that the actual temperature is close to the preset temperature. In this case, maintaining the existing control method will keep the actual temperature close to the preset temperature. Therefore, in this situation, the "first-come, first-served" principle is adopted, that is, the current setting control method remains unchanged.

[0079] Regarding the above embodiments, it should also be noted that the absolute values ​​of the first threshold and the second threshold may be equal or unequal; that is, the widths of the upper hysteresis loop and the lower hysteresis loop may be equal or unequal. In practical applications, these can be flexibly adjusted according to the actual situation. Furthermore, setting the upper and lower hysteresis loops based on a preset temperature value aims to avoid frequent switching between various control methods. Of course, in other embodiments, the upper and lower hysteresis loops may not be set, i.e., both the first and second thresholds are 0.

[0080] Further, in a specific embodiment, as shown in Figure 4, the heating component is a resistance heating component Rt, and the electronic atomization device also includes a switching transistor K, which is connected in series with the resistance heating component Rt. Thus, the battery assembly, switching transistor K, and resistance heating component Rt constitute a heating circuit. The switching transistor is generally a MOSFET power device. The heating control signal can be a PWM signal, which controls the power of the heating component by controlling the on / off state of the switching transistor K. Specifically, when the switching transistor K is closed, the heating circuit is on; when the switching transistor K is open, the heating circuit is off. Therefore, the larger the duty cycle of the PWM signal, the more electrical energy the resistance heating component receives per unit time, and the higher the temperature; conversely, the lower the temperature. Therefore, regardless of whether it is a power control method, a temperature control method, or an energy control method, the magnitude of the PWM signal duty cycle is positively correlated with the temperature and / or power and / or energy of the heating component.

[0081] It should be understood that in other embodiments, if the switching transistor is connected in parallel with the heating component, then the duty cycle of the PWM signal is negatively correlated with the temperature and / or power and / or energy of the heating component. In this circuit structure, when selecting the control mode in step S30, the principles of "smaller value controls" and "larger value controls" should be reversed.

[0082] Furthermore, in an optional embodiment, when the control mode is set to temperature control mode, the step of determining the corresponding heating control signal in control step S40 includes:

[0083] The current temperature value and preset temperature value of the heating component are obtained, and the corresponding heating control signal is determined based on the current temperature value and preset temperature value.

[0084] In this embodiment, in the temperature control method, the heating control signal is determined by detecting the actual temperature value of the heating component and combining it with a preset temperature value.

[0085] Further, in an optional embodiment, determining the corresponding heating control signal based on the current temperature value and the preset temperature value includes:

[0086] The PID algorithm is used to determine the corresponding heating control signal based on the current temperature value and the preset temperature value.

[0087] In this embodiment, referring to Figure 5, a PID algorithm is used. The difference between the preset temperature value Ts and the measured current temperature value Td is input to the PID controller to obtain a PWM signal (heating control signal) with a corresponding duty cycle. This PWM signal controls the heating of the heating element by controlling the on / off state of the switching transistor, so that the measured temperature matches the preset temperature. It should also be noted that because there is no explicit one-to-one correspondence between the PWM signal output to the heating element and the temperature of the heating element, open-loop control cannot be used for temperature control. However, thanks to the positive correlation between the duty cycle of the PWM signal and the temperature of the heating element—the larger the PWM, the higher the temperature, and vice versa—closed-loop control can achieve the temperature control target.

[0088] Furthermore, in an optional embodiment, when the control mode is set to power control mode, the step of determining the corresponding heating control signal in control step S40 includes:

[0089] Obtain the preset power value of the heating component, and determine the corresponding heating control signal based on the preset power value.

[0090] In this embodiment, given that the battery voltage and heating component are known, there is a one-to-one correspondence between the preset power value of the heating component and the heating control signal. Therefore, power control can use open-loop control, that is, the heating control signal of the heating component can be determined based solely on the preset power value.

[0091] Furthermore, in another optional embodiment, when the control mode is set to power control mode, the step of determining the corresponding heating control signal in control step S40 includes:

[0092] The current power value and preset power value of the heating component are obtained, and the corresponding heating control signal is determined based on the current power value and preset power value.

[0093] In this embodiment, compared to the power control method (open loop) of the previous embodiment, the closed loop control method of this embodiment adds the actual current power value as feedback data. This control method is more accurate because it can eliminate the influence of the internal resistance of the switching transistor, the internal resistance of the battery cell, the lead resistance, etc.

[0094] Further, in an optional embodiment, determining the corresponding heating control signal based on the current power value and the preset power value includes:

[0095] The PID algorithm is used to determine the corresponding heating control signal based on the current power value and the preset power value.

[0096] In this embodiment, referring to Figure 6, a PID algorithm is used to calculate the difference between the preset power value Ps and the measured current power value Pd and input it into the PID controller to obtain a PWM signal (heating control signal) with a corresponding duty cycle. This PWM signal controls the heating of the heating component by controlling the on and off of the switching transistor, so that the measured power is consistent with the preset power.

[0097] In the embodiment of the power control method described above, since a PWM signal is used to control the switching on and off of the switching transistor, that is, the power supply to the heating component is intermittently cut off through PWM pulse width modulation, the battery module only outputs power to the heating component when the switching transistor is on, and does not output power to the heating component when the switching transistor is off. The preset power value at each moment in the power curve is the average power. Therefore, the current power value of the heating component must also be the average power. In fact, when detecting the power of the heating component, often only the peak power, that is, the power when the switching transistor is on, can be measured, while its average value needs to be calculated.

[0098] In the open-loop power control mode, the duty cycle of the PWM signal can be determined as follows: Referring to Figure 4, firstly, detect the voltage U and resistance R of the heating component when the switching transistor K is turned on (e.g., at time t), and then use the formula P = Calculate the power of the heating element when the switching transistor K is turned on; this power is the peak power P. 峰 (t) Peak power is the maximum power that the heating component can obtain under the condition that the battery voltage and the resistance of the heating component are constant. However, during the suction process, it is not necessary to maintain maximum power continuously, so a PWM signal is needed to intermittently cut off the power supply to ensure that the equivalent (average) power obtained by the heating component remains consistent with the preset power. Therefore, the peak power P at time t is determined... 峰 After (t), the preset power value Ps(t) corresponding to time t can be found in the power curve. This power is the average power. Therefore, the duty cycle of the PWM signal at this time is... for:

[0099]

[0100] As can be seen from the above formula, under the condition that the battery voltage and the resistance of the heating component are constant, the peak power P 峰Since t is constant, the duty cycle of the PWM signal is only related to the power preset value Ps(t).

[0101] In the power closed-loop control method, the duty cycle of the PWM signal can be determined as follows: Referring to Figure 4, firstly, detect the voltage U and resistance R of the heating component when the switching transistor K is turned on (e.g., at time t), and then use the formula P = Calculate the power of the heating element when the switching transistor K is turned on; this power is the peak power P. 峰 Next, the duty cycle of the current PWM signal is obtained, and the peak power is multiplied by the current duty cycle to obtain the power detection value Pd(t) (average power) at time t. Then, the preset power value Ps(t) corresponding to time t is found in the power curve; this power is the average power. Finally, the difference between the preset power value Ps(t) and the measured power value Pd(t) is input into the PID controller to obtain the PWM signal (heating control signal) with the corresponding duty cycle.

[0102] Furthermore, in an optional embodiment, when the control mode is set to energy control mode, the step of determining the corresponding heating control signal in control step S40 includes:

[0103] Obtain the preset energy value of the heating component, and determine the corresponding heating control signal based on the preset energy value.

[0104] In this embodiment, given that the battery voltage and heating component are known, there is a one-to-one correspondence between the preset energy value of the heating component and the heating control signal. Therefore, energy control can use open-loop control, that is, the heating control signal of the heating component can be determined based solely on the preset energy value.

[0105] Furthermore, in another optional embodiment, when the control mode is set to energy control mode, the step of determining the corresponding heating control signal in control step S40 includes:

[0106] The current energy value and preset energy value of the heating component are obtained, and the corresponding heating control signal is determined based on the current energy value and preset energy value.

[0107] In this embodiment, compared to the energy control method (open loop) of the previous embodiment, the closed loop control method of this embodiment adds the actual current energy value as feedback data. This control method is more accurate because it can eliminate the influence of the internal resistance of the switching transistor, the internal resistance of the battery cell, the resistance of the lead wire, etc.

[0108] Further, in an optional embodiment, determining the corresponding heating control signal based on the current energy value and the preset energy value includes:

[0109] The PID algorithm is used to determine the corresponding heating control signal based on the current energy value and the preset energy value.

[0110] The present invention also provides an electronic atomization device, comprising: a heating component, a battery component, and a control component. The heating component is used to heat the aerosol forming matrix; the battery component provides power to the heating component; and the control component is configured to perform:

[0111] Obtain the current temperature value of the heating component and compare the current temperature value with a preset temperature value to obtain a first comparison result;

[0112] The heating control signals of the heating component under at least two control modes are determined respectively, and the heating control signals under at least two control modes are compared to obtain a second comparison result, wherein;

[0113] Based on the first comparison result and the second comparison result, one of the at least two control methods is selected as the set control method;

[0114] Based on the set control method, a corresponding heating control signal is determined, and the heating component is controlled to heat according to the corresponding heating control signal.

[0115] It should be understood that in some embodiments, the control component may be an MCU, and the MCU implements the steps of the heating control method of the above-described heating non-combustible device by executing a corresponding computer program. In other embodiments, the control component may also be constructed from discrete components. Furthermore, the embodiments of the heating non-combustible device and the embodiments of the above-described heating control method belong to the same concept, so the technical features in the embodiments of the heating control method are all applicable to the embodiments of the heating non-combustible device, and will not be repeated here.

[0116] Furthermore, in an optional embodiment, the electronic atomizing device also includes a switching tube connected in series with the heating component, and a heating control signal is used to control the switching tube to turn on or off.

[0117] In one specific embodiment, as shown in Figure 4, the heating component is a resistance heating component Rt, and the switching transistor K is generally a MOSFET power device. The battery assembly, switching transistor K, and resistance heating component Rt constitute a heating circuit. The heating control signal can be a PWM signal, used to control the on / off state of the switching transistor K. Specifically, when the switching transistor K is closed, the heating circuit is on; when the switching transistor K is open, the heating circuit is off. Therefore, the larger the duty cycle of the PWM signal, the more electrical energy the resistance heating component receives per unit time, and the higher the temperature; conversely, the lower the temperature. Therefore, regardless of whether it is a power control method or a temperature control method, the magnitude of the heating control signal is achieved by adjusting the duty cycle of the PWM signal, and the magnitude of the PWM signal duty cycle is positively correlated with the temperature and / or power of the heating component.

[0118] It should be understood that in other embodiments, if the switching transistor is connected in parallel with the heating component, then the duty cycle of the PWM signal is negatively correlated with the temperature and / or power of the heating component. In this circuit structure, the principle of "smaller value controls" and "larger value controls" should be reversed when selecting the control mode.

[0119] Furthermore, in an optional embodiment, the electronic atomizing device further includes a temperature detection component and / or a power detection component, wherein the temperature detection component is used to detect the temperature of the heating component to obtain a current temperature value; and the power detection component is used to detect the power of the heating component to obtain a current power value.

[0120] In some specific embodiments, the temperature detection component may be a temperature sensor, thermistor, or the like, mounted on the heating component. In other specific embodiments, the power detection component can detect the power by detecting parameters such as the voltage, resistance, and current of the heating component. However, it should be understood that when using a PWM signal as the heating control signal, the detected power is the peak power, and the average power should be calculated based on the peak power.

[0121] Finally, it should be noted that although the terms "first," "second," etc., may be used herein to describe various information, such information should not be limited by these terms. As used herein, the term "and / or" includes any and all combinations of one or more associated listed items. The examples of temperature, time, and other values ​​in this document and its accompanying figures relate to the material / size of the heating assembly, the composition / size of the aerosol-forming matrix, and the power supply, components, etc., used; therefore, these temperature and time values ​​should not be limited by these examples.

[0122] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A heating control method for an electronic atomizing device, the electronic atomizing device comprising a heating component, characterized in that, include: First comparison step: Obtain the current temperature value of the heating component and compare the current temperature value with a preset temperature value to obtain a first comparison result; The second comparison step is to determine the heating control signals of the heating component under at least two control modes, and compare the heating control signals under at least two control modes to obtain a second comparison result. Selection step: Based on the first comparison result and the second comparison result, select one of the at least two control methods as the set control method; Control steps: Based on the set control mode, determine the corresponding heating control signal, and control the heating component to heat according to the corresponding heating control signal.

2. The heating control method for the electronic atomizing device according to claim 1, characterized in that, The at least two control methods include at least two of the following: temperature control, power control, and energy control.

3. The heating control method for the electronic atomizing device according to claim 2, characterized in that, The magnitude of the heating control signal is positively correlated with the magnitude of the control parameters of the corresponding control mode of the heating component; The selection steps include: When the difference between the current temperature value and the preset temperature value is greater than a first threshold, the control mode corresponding to the smallest heating control signal among the heating control signals under at least two control modes is taken as the set control mode, wherein the first threshold is greater than or equal to 0; When the difference between the current temperature value and the preset temperature value is less than a second threshold, the control mode corresponding to the largest heating control signal among the heating control signals under at least two control modes is taken as the set control mode, wherein the second threshold is less than or equal to 0; When the difference between the current temperature value and the preset temperature value is greater than or equal to the second threshold and less than or equal to the first threshold, the current setting control mode remains unchanged.

4. The heating control method for the electronic atomizing device according to claim 2 or 3, characterized in that, When the control mode is set to power control mode, the step of determining the corresponding heating control signal includes: Obtain the preset power value of the heating component, and determine the corresponding heating control signal based on the preset power value; or, When the control mode is set to energy control mode, the step of determining the corresponding heating control signal includes: Obtain the preset energy value of the heating component, and determine the corresponding heating control signal based on the preset energy value.

5. The heating control method for the electronic atomizing device according to claim 2 or 3, characterized in that, When the control mode is set to temperature control mode, the step of determining the corresponding heating control signal includes: The current temperature value and preset temperature value of the heating component are obtained, and the corresponding heating control signal is determined based on the current temperature value and preset temperature value. or, When the control mode is set to power control mode, the step of determining the corresponding heating control signal includes: Obtain the current power value and preset power value of the heating component, and determine the corresponding heating control signal based on the current power value and preset power value; or, When the control mode is set to energy control mode, the step of determining the corresponding heating control signal includes: The current energy value and preset energy value of the heating component are obtained, and the corresponding heating control signal is determined based on the current energy value and the preset energy value.

6. The heating control method for the electronic atomizing device according to claim 5, characterized in that, The step of determining the corresponding heating control signal based on the current temperature value and the preset temperature value includes: The PID algorithm is used to determine the corresponding heating control signal based on the current temperature value and the preset temperature value.

7. The heating control method for the electronic atomizing device according to claim 5, characterized in that, The step of determining the corresponding heating control signal based on the current power value and the preset power value includes: The PID algorithm is used to determine the corresponding heating control signal based on the current power value and the preset power value.

8. An electronic atomizing device, characterized in that, include: Heating components for heating aerosol-forming matrices; A battery assembly for providing power to the heating assembly; A control component, and the control component is configured to perform: Obtain the current temperature value of the heating component and compare the current temperature value with a preset temperature value to obtain a first comparison result; The heating control signals of the heating component under at least two control modes are determined respectively, and the heating control signals under at least two control modes are compared to obtain a second comparison result; Based on the first comparison result and the second comparison result, one of the at least two control methods is selected as the set control method; Based on the set control method, a corresponding heating control signal is determined, and the heating component is controlled to heat according to the corresponding heating control signal.

9. The electronic atomizing device according to claim 8, characterized in that, Also includes: A switching transistor connected in series with the heating component, and the heating control signal is used to control the switching transistor to turn on or off.

10. The electronic atomizing device according to claim 8, characterized in that, Also includes: A temperature detection component used to detect the temperature of the heating component to obtain the current temperature value; And / or, A power detection component used to detect the power of the heating component to obtain the current power value.

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