HEATING CONTROL METHOD, AEROSOL-GENERATING DEVICE, AND COMPUTER-READABLE STORAGE MEDIUM

Description

CROSS-REFERENCE TO PRIOR APPLICATION

Priority is claimed to Chinese Patent Application No. 202311525746.X, filed on Nov. 15, 2023, the entire disclosure of which is hereby incorporated by reference herein.

FIELD

This application relates to the field of atomization technologies, and in particular, to a heating control method, an aerosol-generating device, and a computer-readable storage medium.

BACKGROUND

An aerosol-generating device is configured to heat and atomize an aerosol-generating product containing an atomization medium, to generate aerosol that can be used by a user. An aerosol-generating device can be widely used in the medical, beauty, recreational smoking, and other fields.

In the related art, an aerosol-generating device is proposed, configured to heat a prefilled capsule (an aerosol-generating product) containing an atomization medium, so that the capsule can be discarded to solve the cleaning problem for users. However, this solution also has the problem of being unable to detect the remaining content of the atomization medium in the capsule, which can easily cause dry heating in the final stage and affect user experience.

SUMMARY

In an embodiment, the present invention provides a heating control method, comprising: in a heating stage, obtaining a first heating power and a first heating time of an aerosol-generating product in each atomization stage, and determining atomization energy generated by the first heating power within the first heating time in each atomization stage; and in response, if a difference between a sum of atomization energy generated by a plurality of atomization stages in the heating stage and preset total atomization energy of the aerosol-generating product is less than or equal to a first threshold, controlling a power output function of an aerosol-generating device.

BRIEF DESCRIPTION OF THE DRAWINGS

Subject matter of the present disclosure will be described in even greater detail below based on the exemplary figures. All features described and/or illustrated herein can be used alone or combined in different combinations. The features and advantages of various embodiments will become apparent by reading the following detailed description with reference to the attached drawings, which illustrate the following:

FIG. 1 is a schematic flowchart of an embodiment of a heating control method according to this application;

FIG. 2 is a schematic flowchart of an embodiment of step S1 in FIG. 1;

FIG. 3 is a schematic flowchart of another embodiment of step S1 in FIG. 1;

FIG. 4 shows a power curve of an embodiment of a heating control method according to this application;

FIG. 5 shows a temperature curve of an embodiment of a heating control method according to this application;

FIG. 6 is a schematic structural diagram of an embodiment of an aerosol-generating device according to this application;

FIG. 7 is a schematic structural diagram of another embodiment of an aerosol-generating device according to this application;

FIG. 8 is a structural circuit diagram of an embodiment of an aerosol-generating product detection unit according to this application;

FIG. 9 is a schematic structural diagram of an embodiment of an aerosol-generating device according to this application; and

FIG. 10 is a schematic modular diagram of an embodiment of a computer-readable storage medium according to this application.

DETAILED DESCRIPTION

In an embodiment, the present invention provides a heating control method, an aerosol-generating device, and a computer-readable storage medium, which can solve the problem that an aerosol-generating device is prone to dry heating in the final stage of heating an aerosol-generating product.

To solve the foregoing problem, a technical solution provided by this application is as follows: A heating control method is provided, including: in a heating stage, obtaining a first heating power and a first heating time of an aerosol-generating product in each atomization stage, and determining atomization energy generated by the first heating power within the first heating time in each atomization stage; and in response to that a difference between a sum of atomization energy generated by a plurality of atomization stages in the heating stage and preset total atomization energy of the aerosol-generating product is less than or equal to a first threshold, controlling a power output function of an aerosol-generating device.

In an embodiment, the obtaining a first heating power and a first heating time of an aerosol-generating product in each atomization stage includes: obtaining an atomization basic power corresponding to each moment of each atomization stage, and determining the first heating power corresponding to each moment of the atomization stage based on the atomization basic power; and obtaining the first heating time that corresponds to each moment and that is for heating the aerosol-generating product with the first heating power in each atomization stage.

In an embodiment, the atomization basic power is determined based on an atomization base power, a first proportional coefficient, and a moment corresponding to a current atomization stage.

In an embodiment, the heating stage further includes at least one heat preservation stage; and the obtaining a first heating power and a first heating time of an aerosol-generating product in each atomization stage further includes: obtaining a heat preservation time of a previous heat preservation stage of each current atomization stage; and determining, based on the heat preservation time and the atomization basic power, a first compensation power at each moment corresponding to each current atomization stage, and determining, based on the first compensation power, the first heating power corresponding to each moment of each current atomization stage.

In an embodiment, the determining, based on the heat preservation time and the atomization basic power, a first compensation power at each moment corresponding to each current atomization stage includes: in response to that the heat preservation time is greater than or equal to a second threshold, determining the atomization basic power corresponding to each moment in the current atomization stage as the first compensation power at each moment corresponding to the current atomization stage; or in response to that the heat preservation time is less than the second threshold, based on the atomization basic power corresponding to each moment in the current atomization stage, the heat preservation time, and the second threshold, determining the first compensation power at each moment corresponding to the current atomization stage.

In an embodiment, the heat preservation stage includes a first heat preservation stage and a second heat preservation stage; and in response to that a cumulative time of the heating stage is less than or equal to a third threshold and the heat preservation stage is the first heat preservation stage, preserving heat of the aerosol-generating product with a first heat preservation power; or in response to that the cumulative time of the heating stage is greater than the third threshold and the heat preservation stage is the second heat preservation stage, preserving heat of the aerosol-generating product with a second heat preservation power; where the first heat preservation power is greater than the second heat preservation power, and the first heat preservation power is less than the atomization basic power.

In an embodiment, the determining, based on the first compensation power, the first heating power corresponding to each moment of each current atomization stage includes: in response to that a sum of first heating times in all atomization stages before the current atomization stage is less than or equal to a fourth threshold, using the first compensation power at each moment corresponding to the current atomization stage as the first heating power at each moment corresponding to the current atomization stage; or in response to that the sum of the first heating times in all the atomization stages before the current atomization stage is greater than the fourth threshold and less than or equal to a fifth threshold, determining the first heating power based on the first compensation power at each moment corresponding to the current atomization stage and a second proportional coefficient.

In an embodiment, the heating control method further includes: in response to that the sum of the first heating times in all the atomization stages before the current atomization stage is greater than the fifth threshold, locking a stop power output function of the aerosol-generating device.

In an embodiment, before the heating stage, the heating control method further includes: preheating the aerosol-generating product for a first preheating time with a first preheating power in a preheating stage; where the first preheating power is greater than or equal to the first heating power.

In an embodiment, the heating control method further includes: after locking the power output function of the aerosol-generating device, in response to replacing the aerosol-generating product, unlocking the power output function of the aerosol-generating device.

To solve the foregoing problem, another technical solution provided by this application is as follows: An aerosol-generating device is provided, including: an atomization unit, configured to heat an aerosol-generating product; an energy storage unit, connected to the atomization unit; and a control unit, connected to the energy storage unit and the atomization unit, where the control unit is configured to control each atomization stage of the energy storage unit in a heating stage, provide a first heating power to the atomization unit to heat the aerosol-generating product, and perform the heating control method according to any one of the foregoing implementations.

In an embodiment, the control unit includes: a control chip; a current detection unit, connected in series on a path of the energy storage unit and the atomization unit, and connected to the control chip, for providing an output current of the energy storage unit to the control chip; and a voltage detection unit, connected in parallel to the energy storage unit and connected to the control chip, and configured to provide an output voltage of the energy storage unit to the control chip; where the control chip obtains, based on the output current provided by the current detection unit and the output voltage provided by the voltage detection unit, the first heating power outputted by the energy storage unit to the atomization unit in each atomization stage.

To solve the foregoing problem, still another technical solution provided by this application is as follows: An aerosol-generating device is provided, including: a memory and a processor, where the memory stores program instructions, and the processor invokes the program instructions from the memory to perform the heating control method according to any one of the foregoing implementations.

To solve the foregoing problem, still another technical solution provided by this application is as follows: A computer-readable storage medium is provided, configured to store a control program, where the control program, when executed by a processor, is configured to implement the heating control method according to any one of the foregoing implementations.

Different from the existing technology, the beneficial effects of this application are as follows: in the heating control method provided by this application, the first heating power and the first heating time of the aerosol-generating product in each atomization stage are obtained, atomization energy generated by the first heating power within the first heating time in each atomization stage is determined, and in response to that the difference between the sum of atomization energy generated by all the atomization stages in the heating stage and the preset total atomization energy of the aerosol-generating product is less than or equal to the first threshold, it is determined that the atomization medium in the aerosol-generating product basically runs out, thereby controlling the power output function of the aerosol-generating device, for example, reducing the power output of the aerosol-generating device and locking the power output function of the aerosol-generating device. This avoids that if atomization continues when the atomization medium in the aerosol-generating product is insufficient, aerosol that does not have the desired characteristic is generated (for example: large aerosol particles or toxic and harmful chemical components), and avoids dry heating and bad user experience.

The technical solutions in embodiments of this application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are merely some rather than all of the embodiments of this application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of this application without creative efforts shall fall within the protection scope of this application.

FIG. 1 is a schematic flowchart of an embodiment of a heating control method according to this application. This application provides a heating control method, including:

Step S1: In a heating stage, obtain a first heating power and a first heating time of an aerosol-generating product in each atomization stage, and determine atomization energy generated by the first heating power within the first heating time in each atomization stage.

Types of aerosol-generating products generally include reusable aerosol-generating products and disposable aerosol-generating products such as capsules. Disposable aerosol-generating products are easy to fill and can be discarded after usage, which facilitates cleaning of aerosol-generating devices.

In addition, it should be noted that, reusable aerosol-generating products may be brand new or may have been used before the current heating stage. In this embodiment, determining the atomization energy generated by the first heating power within the first heating time in each atomization stage is determining atomization energy generated by the first heating power within the first heating time in each atomization stage of the entire heating stage.

The following uses a disposable aerosol-generating product as an example. In a heating stage S of heating the aerosol-generating product by the aerosol-generating device, the atomization medium stored in the aerosol-generating product can be used by the user to take a plurality of puffs. One puff is used as one atomization stage S1. A relevant component (for example, a control unit) in the aerosol-generating device obtains a first heating power P1 and a first heating time T1 of the aerosol-generating product of each atomization stage S1 in the entire heating stage S. Then, based on the first heating power P1 and the first heating time T1 of each atomization stage S1, atomization energy generated in each atomization stage S1 can be determined.

Step S2: In response to that a difference between a sum of atomization energy generated by a plurality of atomization stages in the heating stage and preset total atomization energy of the aerosol-generating product is less than or equal to a first threshold, control a power output function of an aerosol-generating device.

An experimenter can obtain, through a large number of experiments and actual tests in advance, the total atomization energy required to heat and atomize the atomization medium in the aerosol-generating product, so that before the aerosol-generating device leaves the factory or a user uses the aerosol-generating product, relevant data is stored in a relevant storage device in the aerosol-generating device or in a cloud server as the preset total atomization energy of the aerosol-generating product.

In response to that the difference between the sum of atomization energy generated by a plurality of atomization stages S1 in the heating stage S and the preset total atomization energy of the aerosol-generating product is less than or equal to the first threshold X1, the control unit determines that if atomization continues when the atomization medium in the aerosol-generating product is insufficient, aerosol that does not have the desired characteristic is generated (for example: large aerosol particles or toxic and harmful chemical components), thereby controlling the power output function of the aerosol-generating device, for example, reducing the power output of the aerosol-generating device and locking the power output function of the aerosol-generating device. This avoids dry heating.

“Locking the power output function of the aerosol-generating device” means that after the power output function of the aerosol-generating device is locked, without replacing a new aerosol-generating product, the aerosol-generating device does not output power to heat the aerosol-generating product in response to a user puff action or a heating control action with a button.

For example, the preset total atomization energy is W_total, and the sum of the atomization energy generated in the plurality of atomization stages S1 is W_sigma, where W_sigma=∫₀^tP1dt, and P1 is the first heating power. When the difference between W_sigma and W_total is less than or equal to the first threshold X1, it is determined that the atomization medium in the aerosol-generating matrix basically runs out, and in this case, the control unit locks the power output function of the aerosol-generating device.

For another example, when the difference between W_sigma and W_total is less than or equal to the first threshold X1, it is determined that a small amount of atomization medium remains in the aerosol-generating matrix, but it is difficult to reach the normal liquid supply standard, and in this case, the control unit lessens the power output function of the aerosol-generating device.

After locking the power output function of the aerosol-generating device, to unlock the power output function of the aerosol-generating device, in an embodiment, the heating control method provided by this application further includes: after locking the power output function of the aerosol-generating device, in response to replacing the aerosol-generating product, unlocking the power output function of the aerosol-generating device.

Specifically, in an embodiment, the aerosol-generating device further includes an aerosol-generating product detection unit, configured to detect whether the aerosol-generating product is filled in the aerosol-generating device, to avoid that if the power output function is started without filling the aerosol-generating product in the aerosol-generating device, safety risks are caused.

In an embodiment, the aerosol-generating product detection unit is further configured to detect whether to replace the aerosol-generating product in the aerosol-generating device. When the control unit detects that the atomization medium in the aerosol-generating product runs out, the power output function of the aerosol-generating device is locked to avoid dry heating. Besides, only after the aerosol-generating product detection unit detects that the aerosol-generating product in the aerosol-generating device is replaced, the control unit unlocks the power output function of the aerosol-generating device.

Since a user puff takes away some heat, less heat is received in the later part of each atomization stage S1 compared with the early part, thereby affecting the atomization effect of the later part of each atomization stage S1. Therefore, in an embodiment, FIG. 2 is a schematic flowchart of an embodiment of step S1 in FIG. 1. The obtaining the first heating power P1 and the first heating time T1 of the aerosol-generating product in each atomization stage S1 specifically includes:

Step S11: Obtain an atomization basic power corresponding to each moment of each atomization stage, and determine the first heating power corresponding to each moment of the atomization stage based on the atomization basic power. For example, if an atomization stage S1 is 2 s and every 0.2 s corresponds to an atomization moment, the control unit obtains, every 0.2 s, the atomization basic power P11 of atomizing the aerosol-generating product by the device, and then determines, based on the atomization basic power P11, the first heating power P1 corresponding to each moment of the atomization stage S1.

In an embodiment, the atomization basic power P11 is determined based on an atomization base power P, a first proportional coefficient K1, and a moment corresponding to a current atomization stage S1.

Specifically, a formula for obtaining the atomization basic power P11 is:

P11=P+K1×T_puff.

P11 is the atomization basic power. P is the atomization base power. K1 is the first proportional coefficient. T_puff is the moment corresponding to the current atomization stage S1.

P and K1 are preset values that can be determined through experiments.

Step S12: Obtain the first heating time that corresponds to each moment and that is for heating the aerosol-generating product with the first heating power in each atomization stage.

Specifically, the control unit can obtain, based on a puff start action and a puff end action of a user, the first heating time T1 corresponding to the atomization stage S1, and further can determine, based on the first heating power P1 corresponding to each moment of each atomization stage S1 and the first heating time T1, the atomization energy generated in each atomization stage S1.

In an embodiment, an airflow sensing element is provided in the aerosol-generating device. Every time the user puffs and stops puffing, a change of an output electrical parameter of the airflow sensing element is triggered. The control unit can determine the puff start action and the puff end action based on the change of the output electrical parameter of the airflow sensing element, and then determine the first heating time T1 of each atomization stage S1.

In another embodiment, a puff button is provided in the aerosol-generating device. The user controls the puff start action and the puff end action by controlling the puff button. The control unit can determine the puff start action and the puff end action based on the action of the puff button, and then determine the first heating time T1 of each atomization stage S1.

In a non-atomization stage of the heating stage S, for example, gap between puffs of the user and before the first puff, to achieve the effect of instant puff, it needs to be ensured that the aerosol-generating product can be maintained at a relatively high temperature, and the temperature is maintained to not atomize the atomization medium and basically consumes no atomization medium. Therefore, in an embodiment, FIG. 3 is a schematic flowchart of another embodiment of step S1 in FIG. 1, FIG. 4 shows a power curve of an embodiment of a heating control method according to this application, and FIG. 5 shows a temperature curve of an embodiment of a heating control method according to this application. It is set that the heating stage S further includes a heat preservation stage S2. The heat preservation stage S2 is in the non-atomization stage of the heating stage S and is used to maintain the aerosol-generating product at a relatively high temperature without basically consuming the atomization medium.

In this embodiment, the obtaining the first heating power P1 and the first heating time T1 of the aerosol-generating product in each atomization stage S1 further includes:

Step S13: Obtain a heat preservation time of a previous heat preservation stage of each current atomization stage.

In an embodiment, the heat preservation stage S2 includes a first heat preservation stage and a second heat preservation stage, where the first heat preservation stage is a short-time heat preservation stage, and the second heat preservation stage is a long-time heat preservation stage.

Specifically, in response to that the cumulative time of the heating stage is less than or equal to a third threshold X3, in the non-atomization stage of the heating stage S, the control unit controls the aerosol-generating device to enter the first heat preservation stage, to preserve heat of the aerosol-generating product with the first heat preservation power P21. Besides, in response to that the cumulative time of the heating stage is greater than the third threshold X3, in the non-atomization stage of the heating stage S, the control unit controls the aerosol-generating device to enter the second heat preservation stage to preserve heat of the aerosol-generating product with the second heat preservation power P22.

The first heat preservation power P21 is greater than the second heat preservation power P22. Specifically, if the cumulative time of the current heating stage is greater than the third threshold X3, it indicates that a temperature of the atomization unit configured to heat the aerosol-generating product in the aerosol-generating device and a temperature of the aerosol-generating product are already high. In this case, the smaller second heat preservation power P22 is used to preserve heat of the aerosol-generating product in the heat preservation stage S2, to prevent the temperature of the device from being excessively high and save energy consumption. If the cumulative time of the current heating stage is smaller than or equal to the third threshold X3, it indicates that the temperature of the atomization unit configured to heat the aerosol-generating product in the aerosol-generating device and the temperature of the aerosol-generating product are not excessively high. To prevent the temperatures of the atomization unit and the aerosol-generating product from dropping excessively quickly in the heat preservation stage S2, which affects the next user puff experience, for example, slows smoke release, the higher first heat preservation power P21 is used to preserve heat of the aerosol-generating product in the heat preservation stage S2, to maintain the aerosol-generating product at a higher temperature, which facilitates instant puff and improves user experience.

In addition, it should be noted that the first heat preservation power P21 needs to be smaller than the atomization basic power P11, to avoid that the atomization medium is heated to generate aerosol in the heat preservation stage S2, resulting in waste.

Step S14: Determine, based on the heat preservation time and the atomization basic power, a first compensation power at each moment corresponding to each current atomization stage, and determine, based on the first compensation power, the first heating power corresponding to each moment of each current atomization stage.

Specifically, in the heat preservation stage S2, the device and the atomization medium gradually cool to a lower equilibrium temperature. Therefore, the first compensation power P12 needs to be outputted to compensate for the lost heat in a positive manner.

The determining, based on the heat preservation time T2 and the atomization basic power P11, a first compensation power P12 at each moment corresponding to each current atomization stage S1 specifically includes:

in response to that the heat preservation time T2 is greater than or equal to a second threshold X2, determining the atomization basic power P11 corresponding to each moment in the current atomization stage S1 as the first compensation power P12 at each moment corresponding to the current atomization stage S1.

The second threshold X2 may be the same as or different from the third threshold X3. Specifically, in response to that the heat preservation time T2 is greater than or equal to the second threshold X2, it indicates the long-time second heat preservation stage. Therefore, the aerosol-generating product may lose more heat. In this case, the atomization basic power P11 corresponding to each moment in the current atomization stage S1 is used as the first compensation power P12 at each moment corresponding to the current atomization stage S1.

In this embodiment, a calculation formula of the first compensation power P12 is:

P12=P11.

P11 is the atomization basic power. P12 is the first compensation power.

In response to that the heat preservation time T2 is smaller than the second threshold X2, the first compensation power P12 at each moment corresponding to the current atomization stage S1 is determined based on the atomization basic power P11 corresponding to each moment in the current atomization stage S1, the heat preservation time T2, and the second threshold X2.

Specifically, in response to that the heat preservation time T2 is less than the second threshold X2, it indicates the short-time second heat preservation stage. Therefore, the aerosol-generating product may dissipate less heat. In this case, the first compensation power P12 at each moment corresponding to the current atomization stage S1 is determined based on the atomization basic power P11 corresponding to each moment in the current atomization stage S1, the heat preservation time T2, and the second threshold X2.

In this embodiment, a calculation formula of the first compensation power P12 is:

P12=P11×(0.8+0.2×T2/X2).

P11 is the atomization basic power. P12 is the first compensation power. T2 is a heat preservation time of a previous heat preservation stage S2 of the current atomization stage S1. X2 is the second threshold.

K1 is a preset value that can be determined through experiments.

As the heating stage S proceeds, the atomization medium in the aerosol-generating product is also gradually consumed. Therefore, in this application, the impact of power output on the different remaining amounts of the atomization medium in the aerosol-generating product is also considered, and the remaining amounts of the atomization medium are divided into roughly three stages: a stage of a large amount of remaining atomization medium, a stage of a small amount of remaining atomization medium, and a stage of no remaining atomization medium, which are determined based on the sum of the first heating times T1 in all the atomization stages S1 before the current atomization stage S1 and a fourth threshold X4.

Specifically, in different stages of the remaining atomization medium, the first heating power P1 outputted by the aerosol-generating device is different, thereby preventing dry heating.

Therefore, in this embodiment, the determining, based on the first compensation power P12, the first heating power P1 corresponding to each moment of each current atomization stage S1 specifically includes:

• • in response to that a sum of first heating times T1 in all atomization stages S1 before the current atomization stage S1 is less than or equal to a fourth threshold X4, using the first compensation power P12 at each moment corresponding to the current atomization stage S1 as the first heating power P1 at each moment corresponding to the current atomization stage S1.

That is, in response to the stage of a large amount of remaining atomization medium, the control unit uses the first compensation power P12 at each moment corresponding to the current atomization stage S1 as the first heating power P1 at each moment corresponding to the current atomization stage S1. The stage of a large amount of remaining atomization medium can indicate that the remaining amount of the atomization medium in the aerosol-generating product is greater than or equal to ⅓.

In this embodiment, a calculation formula of the first heating power P1 is:

P1=P12.

P1 is the first heating power. P12 is the first compensation power.

In response to that the sum of the first heating times T1 in all the atomization stages S1 before the current atomization stage S1 is greater than the fourth threshold X4 and less than or equal to a fifth threshold X5, the first heating power P1 is determined based on the first compensation power P12 at each moment corresponding to the current atomization stage S1 and a second proportional coefficient K2.

That is, in response to the stage of a small amount of remaining atomization medium, the control unit determines the first heating power P1 based on the first compensation power P12 at each moment corresponding to the current atomization stage S1 and the second proportional coefficient K2. The stage of a small amount of remaining atomization medium can indicate that the remaining amount of the atomization medium in the aerosol-generating product is smaller than ⅓ and greater than 0.

In this embodiment, a calculation formula of the first heating power P1 is:

P ⁢ 1 = K ⁢ 2 × P 12.

P1 is the first heating power. P12 is the first compensation power. K2 is the second proportional coefficient.

A calculation formula of the second proportional coefficient K2 is:

K ⁢ 2 = 1. - ( 1. - K ⁢ 3 ) × ( T_total ⁢ _puff - T ⁢ 4 ) / ( T ⁢ 5 - T ⁢ 4 ) .

K2 is the second proportional coefficient. K3 is a remaining proportional coefficient of the atomization medium. T_total_puff is the sum of the first heating times T1 in all current atomization stages S1. T4 is the fourth threshold. T5 is the fifth threshold.

The heating control method further includes: in response to that the sum of the first heating times T1 in all the atomization stages S1 before the current atomization stage S1 is greater than the fifth threshold X5, locking a stop power output function of the aerosol-generating device.

That is, the control unit stops the power output of the aerosol-generating device in response to the stage of no remaining atomization medium, that is, the first heating power P1 is 0, thereby avoiding dry heating. Since different types of aerosol-generating products have different heating and atomization methods, such as instant-puff-type aerosol-generating products or preheating-type aerosol-generating products, referring to FIG. 4 or FIG. 5, in an embodiment, for preheating-type aerosol-generating products, before the heating stage S, the heating control method further includes: preheating the aerosol-generating product for a first preheating time T3 with a first preheating power P3 in a preheating stage Y;

• • where the first preheating power P3 is greater than or equal to the first heating power P1.

It is understandable that to enable a user to inhale the aerosol in the shortest time, the aerosol-generating product needs to reach a higher temperature, such as an atomization critical temperature, in a short time. Therefore, the first preheating power P3 is set to be greater than or equal to the first heating power P1, thereby achieving rapid heating of the aerosol-generating product to improve user experience.

It should be noted that, the preheating stage Y only needs to make the aerosol-generating product reach a relatively high temperature in a short time without atomizing the atomization medium. Therefore, in the preheating stage Y, the atomization medium basically is not consumed.

Specifically, in the heating control method provided by this application, in response to that the difference between the sum of atomization energy generated by all atomization stages S1 in the heating stage S and the preset total atomization energy of the aerosol-generating product is less than or equal to the first threshold X1, it is determined that if atomization continues when the atomization medium in the aerosol-generating product is insufficient, aerosol that does not have the desired characteristic is generated (for example: large aerosol particles or toxic and harmful chemical components), thereby controlling the power output function of the aerosol-generating device, for example, reducing the power output of the aerosol-generating device and locking the power output function of the aerosol-generating device. This avoids dry heating, thereby improving user experience.

In addition, since a user puff takes away some heat, less heat is received in the later part of each atomization stage S1 compared with the early part, thereby affecting the atomization effect of the later part of each atomization stage S1. Therefore, an atomization basic power P11 corresponding to each moment of each atomization stage S1 is further obtained, and the first heating power P1 corresponding to each moment of the atomization stage S1 is determined based on the atomization basic power P11. In a non-atomization stage of the heating stage S, to achieve the effect of instant puff, it needs to be ensured that the aerosol-generating product can be maintained at a relatively high temperature, and the temperature is maintained to not atomize the atomization medium and basically consumes no atomization medium. Therefore, a first compensation power P12 at each moment corresponding to each current atomization stage S1 is further determined based on the heat preservation time T2 and the atomization basic power P11, and the first heating power P1 corresponding to each moment of each current atomization stage S1 is determined based on the first compensation power P12. In consideration of the impact of the power output on the different remaining amounts of the atomization medium in the aerosol-generating product, in response to that a sum of first heating times T1 in all atomization stages S1 before the current atomization stage S1 is less than or equal to a fourth threshold X4, the first compensation power P12 at each moment corresponding to the current atomization stage S1 is used as the first heating power P1 at each moment corresponding to the current atomization stage S1. Alternatively, in response to that the sum of the first heating times T1 in all the atomization stages S1 before the current atomization stage S1 is greater than the fourth threshold X4 and less than or equal to a fifth threshold X5, the first heating power P1 is determined based on the first compensation power P12 at each moment corresponding to the current atomization stage S1 and a second proportional coefficient K2.

FIG. 6 is a schematic structural diagram of an embodiment of an aerosol-generating device according to this application. This application further provides an aerosol-generating device 100, including an atomization unit 10, an energy storage unit 20, and a control unit 30.

The atomization unit 10 is configured to heat an aerosol-generating product. A heating form of the atomization unit 10 can be electromagnetic heating, center needle heating, laser heating, and the like, and is not limited herein.

The energy storage unit 20 is connected to the atomization unit 10 and is configured to provide electric energy to the atomization unit 10. The energy storage unit 20 may be a cell, a battery, or other components or discharge devices that can provide electrical energy.

The control unit 30 is connected to the energy storage unit 20 and the atomization unit 10, where the control unit 30 is configured to control each atomization stage S1 of the energy storage unit 20 in a heating stage S, and provide a first heating power P1 to the atomization unit 10 to heat the aerosol-generating product. The control unit 30 further performs the heating control method provided in the above embodiment.

FIG. 7 is a schematic structural diagram of another embodiment of an aerosol-generating device according to this application. In an embodiment, the control unit 30 includes a control chip 31, a current detection unit 32, and a voltage detection unit 33.

Specifically, the current detection unit 32 is connected in series on a path of the energy storage unit 20 and the atomization unit 10, and connected to the control chip 31, for providing an output current of the energy storage unit 20 to the control chip 31. The voltage detection unit 33 is connected in parallel to the energy storage unit 20 and connected to the control chip 31, and configured to provide an output voltage of the energy storage unit 20 to the control chip 31. The control chip 31 obtains, based on the output current provided by the current detection unit 32 and the output voltage provided by the voltage detection unit 33, the first heating power P1 outputted by the energy storage unit 20 to the atomization unit 10 in each atomization stage S1.

In an embodiment, still referring to FIG. 7, the control unit 30 further includes a timer, and the aerosol-generating device 100 further includes a switch element 40 connected to the timer.

Specifically, the switch element 40 can be an airflow sensing element or a puff button, and is configured to detect or control whether the aerosol-generating device 100 is in an atomization stage S1. The timer is configured to time when the aerosol-generating device 100 is in the atomization stage S1, thereby obtaining a first heating time T1 corresponding to each atomization stage S1.

In an embodiment, the aerosol-generating device 100 further includes an aerosol-generating product detection unit, configured to detect whether the aerosol-generating product is filled in the aerosol-generating device 100.

FIG. 8 is a structural circuit diagram of an embodiment of an aerosol-generating product detection unit according to this application. In an embodiment, a circuit structure of the aerosol-generating product detection unit includes a first inductor L1, a first capacitor C1, a first switch Q1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, and a comparator A.

Specifically, the first inductor L1 and the first capacitor C1 are connected in parallel and have a first node n1 and a second node n2. The first node n1 is connected to a first power terminal Vbat (for example, the energy storage unit 20), a first electrode plate of the first capacitor, and a first end of the second resistor R2, and the second node n2 is connected to a second electrode plate of the first capacitor C1 and a first path end of the first switch Q1. A second path end of the first switch Q1 is connected to the ground. A control end of the first switch Q1 is connected to the control unit 30 or a corresponding detection switch, and a second end of the first resistor R1 is connected to a first end of the third resistor R3 and a first input end of the comparator A. A second end of the second resistor R2 is connected to a first end of the fourth resistor R4 and a second input end of the comparator A, and second ends of the third resistor R3 and the fourth resistor R4 are connected to the ground. An output end of the comparator A is connected to the control unit 30.

Specifically, when the control end of the first switch Q1 is turned on, the first inductor L1 and the first capacitor C1 send detection pulses with a preset frequency, and the control unit 30 determines, based on a number of pulses outputted by the output end of the comparator A and received within a preset waiting time, whether the aerosol-generating product is filled in the aerosol-generating device 100.

A resistance value of the first resistor R1 is related to the aerosol-generating product. When the aerosol-generating product is filled in the aerosol-generating device 100, the equivalent resistance value of the first resistor R1 becomes larger, and the control unit 30 receives, within a preset waiting time, a smaller number of pulses outputted by the output end of the comparator A. When the aerosol-generating product is not filled in the aerosol-generating device 100, the equivalent resistance value of the first resistor R1 becomes smaller, and the control unit 30 receives, within a preset waiting time, a larger number of pulses outputted by the output end of the comparator A. Therefore, the control unit 30 determines, based on a number of pulses outputted by the output end of the comparator A and received within a preset waiting time, whether the aerosol-generating product is filled in the aerosol-generating device 100.

FIG. 9 is a schematic structural diagram of an embodiment of an aerosol-generating device according to this application. The aerosol-generating device 200 includes a memory 201 and a processor 202. The memory 201 stores program instructions, and the processor 202 invokes the program instructions from the memory 201 to execute the heating control method provided in any one of the foregoing embodiments.

The processor 202 may also be referred to as a central processing unit (CPU). The processor 202 may be an integrated circuit chip with a signal processing capability. The processor 202 may further be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, a discrete gate or a transistor logic device, a discrete hardware component. The general-purpose processor may be a microprocessor, or the processor 202 may be any conventional processor or the like.

The memory 201 may be a memory stick, a TF card or the like, and may store all information in the electronic device of the device, and input original data, a computer program, an intermediate running result and a final running result are all stored in the memory 201. The memory stores and reads the information according to a position determined by a controller. With the memory 201, the electronic device has a memory function, so as to ensure a normal operation. The memory 201 of the electronic device is divided into a main memory (internal memory) and an auxiliary memory (external memory) according to the purpose, and there is also a classification method dividing the memory into an external memory and an internal memory. The external memory usually is a magnetic medium or an optical disk or the like, which can store information for a long time. The internal memory is a storage component on a mainboard, configured to store data and programs being executed currently, but merely configured to store the programs and the data temporarily. The data is lost when the power is turned off or there is a power failure.

FIG. 10 is a schematic modular diagram of an embodiment of a computer-readable storage medium according to this application. This application further provides a computer-readable storage medium 300, configured to store a control program 301, where the control program 301, when executed by the processor 202, is configured to implement the heating control method according to any one of the foregoing implementations.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other manners. For example, the described device embodiments are merely schematic. For example, the unit division is merely logical function division and may be other division in actual implementation. For example, a plurality of units or components may be combined or integrated into another system, or some features may be ignored or not performed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections may be implemented by using some interfaces. The indirect couplings or communication connections between the devices or units may be implemented in electronic, mechanical, or other forms.

In addition, functional units in the embodiments of this application may be integrated into one processing unit, or each of the units may be physically separated, or two or more units may be integrated into one unit. The integrated unit may be implemented in the form of hardware, or may be implemented in a form of a software functional unit.

The foregoing descriptions are merely implementations of this application, and the patent scope of this application is not limited thereto. All equivalent structure or process changes made according to the content of this specification and accompanying drawings in this application or by directly or indirectly applying this application in other related technical fields shall fall within the protection scope of this application.

While the invention has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive. It will be understood that changes and modifications may be made by those of ordinary skill within the scope of the following claims. In particular, the present invention covers further embodiments with any combination of features from different embodiments described above and below. Additionally, statements made herein characterizing the invention refer to an embodiment of the invention and not necessarily all embodiments.

The terms used in the claims should be construed to have the broadest reasonable interpretation consistent with the foregoing description. For example, the use of the article “a” or “the” in introducing an element should not be interpreted as being exclusive of a plurality of elements. Likewise, the recitation of “or” should be interpreted as being inclusive, such that the recitation of “A or B” is not exclusive of “A and B,” unless it is clear from the context or the foregoing description that only one of A and B is intended. Further, the recitation of “at least one of A, B and C” should be interpreted as one or more of a group of elements consisting of A, B and C, and should not be interpreted as requiring at least one of each of the listed elements A, B and C, regardless of whether A, B and C are related as categories or otherwise. Moreover, the recitation of “A, B and/or C” or “at least one of A, B or C” should be interpreted as including any singular entity from the listed elements, e.g., A, any subset from the listed elements, e.g., A and B, or the entire list of elements A, B and C.