Temperature control method and aerosol generating device

Abstract

The embodiment of the invention relates to the technical field of electronic atomization, and discloses a temperature control method and an aerosol generation device.According to the temperature control method, the corresponding coil voltage is determined from the Curie temperature of a receptor material according to the Curie temperature of the receptor material, and therefore the mapping relation between the temperature of the receptor and the coil voltage is determined. Finally, when the aerosol generating device is used for baking the aerosol forming product, the coil voltage of the induction coil is controlled by controlling the time when the power supply provides energy for the induction heater assembly, so that the temperature of the induction heater assembly is controlled to be the optimal temperature; the aerosol generated after baking can rapidly reach a smokable state and maintain the smokable state. Besides, by determining the mapping relation between the temperature of the susceptor and the voltage of the coil, dependence on a chip is eliminated, the problem that heat absorption of the aerosol forming matrix is insufficient or excessive due to the fault problem of the chip is avoided, and the hardware cost can be effectively reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of electronic atomization technology, and in particular to a temperature control method and an aerosol generating device. Background Art

[0002] The aerosol generating device uses a heater to heat and bake the aerosol forming matrix to generate aerosol for use by users.

[0003] An aerosol-forming substrate is a substrate that is capable of releasing volatile compounds that can form an aerosol. Such volatile compounds can be released by heating the aerosol-forming substrate.

[0004] Generally, the existing aerosol generating device controls the temperature of the aerosol generating device through a chip to bake the volatile compound. However, this method increases the hardware cost and has a high failure rate. Summary of the invention

[0005] In view of this, some embodiments of the present application provide a temperature control method and an aerosol generating device, which can accurately control the temperature of the aerosol generating device while saving costs.

[0006] In a first aspect, some embodiments of the present application provide a temperature control method, which is applied to an aerosol generating device, wherein the aerosol generating device includes an induction heater assembly and a power supply, wherein the induction heater assembly includes an induction coil and a susceptor, wherein the induction coil is configured to generate a changing magnetic field when a changing current flows through the induction coil, and the susceptor is configured to be penetrated by the changing magnetic field generated by the induction coil to generate heat, thereby heating an aerosol-forming substrate to generate an aerosol, and the power supply is used to provide energy to the induction heater assembly;

[0007] The method comprises:

[0008] Receiving a heating start instruction and entering a heating phase according to the heating instruction;

[0009] In the heating stage, collecting the coil voltage of the induction coil to determine a first sudden change voltage and a second sudden change voltage of the induction coil;

[0010] Determine a mapping relationship between the coil voltage and the receptor temperature according to the first mutation voltage and the second mutation voltage;

[0011] According to the mapping relationship, the time during which the power supply provides energy to the induction heater assembly is controlled to control the temperature of the aerosol generating device.

[0012] In some embodiments, the susceptor includes a first susceptor composed of a first susceptor material and a second susceptor composed of a second susceptor material, and determining the first sudden voltage and the second sudden voltage of the induction coil includes:

[0013] The first sudden change voltage and the second sudden change voltage of the induction coil are determined according to the pre-stored first Curie temperature and the second Curie temperature.

[0014] In some embodiments, the first mutation voltage is a maximum value of the coil voltage, and the second mutation voltage is a minimum value of the coil voltage.

[0015] In some embodiments, determining the mapping relationship between the coil voltage and the sensor temperature according to the first mutation voltage and the second mutation voltage includes:

[0016] Determining a rising value interval of the coil voltage according to the first sudden voltage and the second sudden voltage;

[0017] Determining the slope of the rising numerical interval;

[0018] Based on the slope, a mapping relationship between the coil voltage and the susceptor temperature is determined.

[0019] In some embodiments, the first Curie temperature is 200°C-350°C.

[0020] In some embodiments, the second Curie temperature is 400°C-600°C.

[0021] In some embodiments, controlling the time for the power supply to provide energy to the induction heater assembly according to the mapping relationship to control the temperature of the aerosol generating device includes:

[0022] Acquiring a current coil voltage of the induction coil;

[0023] Based on the current coil voltage and the mapping relationship, the time for the power supply to provide energy to the induction heater assembly is controlled to control the temperature of the aerosol generating device to a preset temperature.

[0024] In some embodiments, based on the current coil voltage and the mapping relationship, controlling the time for the power supply to provide energy to the induction heater assembly to control the temperature of the aerosol generating device to a preset temperature includes:

[0025] Obtaining a preset temperature of the aerosol generating device;

[0026] Based on the mapping relationship, determining a preset coil voltage corresponding to the preset temperature;

[0027] Determine a difference between the current coil voltage and the preset coil voltage, so as to determine a power supply time for the power supply to provide energy according to the difference;

[0028] The aerosol generating device is provided with energy according to the power supply time, so that the temperature of the aerosol generating device is a preset temperature.

[0029] In a second aspect, some embodiments of the present application provide an aerosol generating device, comprising:

[0030] An induction heater assembly, comprising an induction coil and a susceptor, wherein the induction coil is configured to generate a changing magnetic field when a changing current flows through the induction coil, and the susceptor is configured to be penetrated by the changing magnetic field generated by the induction coil to generate heat, thereby heating the aerosol-forming substrate to generate an aerosol;

[0031] a power source for providing energy to the induction heater assembly;

[0032] A controller is connected to the induction heater assembly and the power supply, and is used to execute the temperature control method as described above.

[0033] In some embodiments, the susceptor includes a first susceptor composed of a first susceptor material and a second susceptor composed of a second susceptor material;

[0034] The first sensing material has a positive temperature coefficient of resistance, and the second sensing material has a negative temperature coefficient of resistance.

[0035] Beneficial effects of the embodiments of the present application: Different from the prior art, the temperature control method provided in the embodiments of the present application is applied to an aerosol generating device, which includes an induction heater component and a power supply, the induction heater component includes an induction coil and a sensor, the induction coil is configured to generate a changing magnetic field when a changing current flows through, the sensor is configured to be penetrated by the changing magnetic field generated by the induction coil to generate heat, and then heat the aerosol-forming matrix to generate an aerosol, and the power supply is used to provide energy for the induction heater component; the temperature control method includes receiving a heating start instruction and entering a heating stage according to the heating instruction; in the heating stage, collecting the coil voltage of the induction coil to determine a first mutation voltage and a second mutation voltage of the induction coil; determining a mapping relationship between the coil voltage and the sensor temperature according to the first mutation voltage and the second mutation voltage; according to the mapping relationship, controlling the time for the power supply to provide energy to the induction heater component to control the temperature of the aerosol generating device.

[0036] In this embodiment, starting from the Curie temperature of the material of the receptor, the corresponding coil voltage is determined according to the Curie temperature of the first receptor material and the second receptor material, thereby determining the mapping relationship between the receptor temperature and the coil voltage. Finally, when the aerosol generating device bakes the aerosol-forming matrix, the coil voltage of the induction coil is controlled by controlling the time for the power supply to provide energy to the induction heater assembly, thereby controlling the temperature of the induction heater assembly to the optimal temperature, so that the aerosol generated after baking can quickly reach a smokable state and maintain a smokable state. Furthermore, the taste and suction experience can be improved. In addition, by determining the mapping relationship between the receptor temperature and the coil voltage, the dependence on the chip can be eliminated, and the problem of insufficient or excessive heat absorption of the aerosol-forming matrix due to chip failure can be avoided. In addition, the hardware cost can be effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0038] Figure 1 This is a schematic diagram of the structure of an aerosol generating device in some embodiments of the present application;

[0039] Figure 2 This is a schematic diagram of the structure of an aerosol generating device in some embodiments of the present application;

[0040] Figure 3 This is a schematic diagram of the structure of an aerosol-forming article in some embodiments of the present application;

[0041] Figure 4 is a waveform diagram of the relationship between the temperature of the sensor and the resistance of the sensor in some embodiments of the present application;

[0042] Figure 5 This is a schematic diagram of the flow of the temperature control method in some embodiments of the present application;

[0043] Figure 6 is a waveform diagram of the coil voltage in some embodiments of the present application. DETAILED DESCRIPTION

[0044] The present application is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present application, but do not limit the present application in any form. It should be noted that, for those of ordinary skill in the art, several variations and improvements can also be made without departing from the concept of the present application. These all belong to the protection scope of the present application.

[0045] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0046] It should be noted that, if there is no conflict, the various features in the embodiments of the present application can be combined with each other, all within the scope of protection of the present application. In addition, although the functional module division is performed in the device schematic diagram and the logical order is shown in the flow chart, in some cases, the steps shown or described can be performed in a sequence different from the module division in the device or the flow chart. In addition, the words "first", "second", "third", etc. used herein do not limit the data and execution order, but only distinguish the same items or similar items with basically the same functions and effects.

[0047] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification and in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0048] In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0049] Figure 1-Figure 2 An aerosol generating device 10 provided in some embodiments of the present application includes: a chamber 11, an induction heater assembly 12, a power source 14 and a controller 15. The controller 15 is electrically connected to the power source 14 and the induction heater assembly 12.

[0050] The chamber 11 is used to receive the aerosol-forming article 20. The aerosol-forming article 20 can be inserted into or removed from the chamber 11 through the opening A on the aerosol generating device 10.

[0051] like Figure 3 As shown, in some embodiments, the aerosol-forming article 20 includes a filter segment 21 and a matrix material segment 22. The matrix material segment 22 includes an aerosol-forming matrix. The aerosol-forming matrix is ​​a matrix that can release volatile compounds that can form an aerosol. Such volatile compounds can be released by heating the aerosol-forming matrix. The aerosol-forming matrix can be a solid aerosol-forming matrix. Alternatively, the aerosol-forming matrix can include solid and liquid components.

[0052] In certain embodiments, aerosol formation substrate can include tobacco-containing material, which is included in the volatile tobacco flavor compounds released from the substrate when heated. Alternatively, aerosol formation substrate can include non-tobacco material. Aerosol formation substrate can further include aerosol formation. The example of suitable aerosol formation is glycerine and propylene glycol.

[0053] The aerosol generated by heating the matrix material segment 22 is delivered to the user through the filter segment 21, which may be a cellulose acetate filter. The filter segment 21 may be sprayed with a flavoring liquid to provide a flavor, or a separate fiber coated with a flavoring liquid may be inserted into the filter segment to improve the durability of the flavor delivered to the user. The filter segment 21 may also have a capsule in a spherical or cylindrical shape, which may contain a content of a flavoring substance.

[0054] exist Figure 3 Only the components of the aerosol-forming article 20 related to this embodiment are shown. Accordingly, those skilled in the art related to this embodiment should understand that the aerosol-forming article 20 may also include components other than Figure 3 For example, a cooling section for cooling the aerosol generated by heating the matrix material section 22 so that the user can inhale the aerosol cooled to a suitable temperature.

[0055] The power source 14 provides power for operating the aerosol generating device 10. For example, the power source 14 can provide power to the induction heater assembly 12, and the induction heater assembly 12 generates heat after receiving power to generate heating energy, and the power required by the display device, sensor, motor, etc. In addition, the power source 14 can provide the power required to operate other components provided in the aerosol generating device 10, such as the power required by the display device, sensor, motor, etc. The power source 14 can be a rechargeable battery or a disposable battery. The power source 14 can be, but is not limited to, a lithium iron phosphate (LiFePO4) battery. For example, the power source 14 can be a lithium cobalt oxide (LiCo02) battery or a lithium titanate battery.

[0056] When the aerosol-forming article 20 is inserted into the chamber 11, the power provided by the power source 14 can cause the induction heating component 12 to generate heating energy, which is transmitted to the aerosol-forming article 20, so that the temperature of the aerosol-forming substrate therein is increased to generate aerosol. The generated aerosol is transmitted to the user through the filter segment 21 of the aerosol-forming article 20 for inhalation.

[0057] The induction heater assembly 12 is used to heat the aerosol-forming matrix in the aerosol-forming product 20 to generate an inhalable aerosol. The induction heater assembly 12 includes an induction coil 121 and a susceptor 122. When a variable current flows through the induction coil 121, the induction coil 121 generates a variable magnetic field. When the variable magnetic field penetrates the susceptor 122, the susceptor 122 generates heat, thereby directly or indirectly heating the aerosol-forming matrix to generate an aerosol. It can be understood that when the alternating magnetic field penetrates the susceptor 122, due to the electromagnetic and magnetic properties of the susceptor material of the susceptor 122, the susceptor 122 generates hysteresis loss and / or eddy current, thereby starting to generate heat. For example, when the material of the susceptor 122 is a ferromagnetic material or a ferrimagnetic material, hysteresis loss occurs because the magnetic domains in the material are switched under the influence of the alternating magnetic field. At this time, if the susceptor 122 is conductive, eddy currents may be caused.

[0058] See also Figure 1-Figure 2 In some embodiments, the induction coil 121 is disposed on the outer surface of the tubular substrate. The tubular substrate is a tubular component along the axial direction of the chamber and surrounding the chamber. In some embodiments, the tubular substrate can be a tubular component made of a heat-insulating material.

[0059] It is understandable that the receptor 122 includes a first receptor composed of a first receptor material and a second receptor composed of a second receptor material, wherein the first receptor material is a paramagnetic, ferromagnetic or ferrimagnetic material having a specific Curie temperature, and the second receptor material is a ferrimagnetic or ferromagnetic material having a specific Curie temperature. Wherein, when the first receptor material is ferromagnetic or ferromagnetic, the Curie temperature of the first receptor material is greater than the Curie temperature of the second receptor material, and in particular, greater than the working temperature of the aerosol generating article 20. Optionally, the first receptor material may include one of aluminum, iron, nickel, copper, bronze, cobalt, ordinary carbon steel, stainless steel, ferritic stainless steel, martensitic stainless steel or austenitic stainless steel, and the second receptor material may include one of nickel-iron high permeability alloy or permalloy.

[0060] In some embodiments, the first sensing material has a positive temperature coefficient of resistance and the second sensing material has a negative temperature coefficient of resistance. Figure 4As shown, the vertical axis is the resistance of the susceptor 122, and the horizontal axis is the temperature of the susceptor 122. When the susceptor 122 is subjected to the alternating magnetic field, the susceptor 122 starts to heat from the room temperature (Tr). When the temperature of the susceptor 122 reaches the Curie temperature (TC) of the second susceptor material, the second susceptor material loses its magnetic properties, causing the resistance of the second susceptor to suddenly decrease. When the temperature of the susceptor 122 further increases to above the Curie temperature of the second susceptor, the resistance (R-min) of the second susceptor is almost zero. At this time, the resistance of the susceptor 122 is reflected by the first susceptor, that is, the resistance of the susceptor 122 increases again toward the working resistance (R-op) at the working temperature (T-op). When the temperature of the susceptor 122 continues to increase, the resistance of the first susceptor also continues to increase. When the temperature of the susceptor 122 reaches the Curie temperature of the first susceptor, the resistance of the susceptor 122 is also the maximum value (not shown in the figure).

[0061] In some embodiments, see Figure 1-Figure 2 , the first susceptor and the second susceptor are in close physical contact with each other, so when the first susceptor and the second susceptor are taken as a whole, if the susceptor 122 is heated by the alternating magnetic field, the first susceptor and the second susceptor have substantially the same temperature. It is understood that each of the first susceptor and the second susceptor or the susceptor 122 can include a variety of geometric configurations, such as Figure 1 As shown, the sensor 122 is a metal tube. In this case, the first sensor may be the two ends of the metal tube, the second sensor may be the tube body of the metal tube, or the first sensor may be the inner wall of the metal tube, and the second sensor may be the outer wall of the metal tube.

[0062] In another embodiment, if Figure 2 As shown, the susceptor 122 is a metal sheet. In this case, the first susceptor and the second susceptor can be in close contact with the left and right structures to form the metal sheet, or in close contact with the upper and lower structures. Based on this, when the aerosol-forming article 20 is inserted into the chamber 11, the susceptor 122 penetrates into the aerosol-forming article 20 and contacts the aerosol-generating substrate. Therefore, when the susceptor 122 heats up, the heating energy can be effectively transferred to the aerosol-forming article 20 to bake the aerosol-forming substrate.

[0063] In some embodiments, a metal sheet or metal needle is built into the aerosol-forming article 20. When the aerosol-forming article 20 is inserted into the chamber 11, the metal sheet or metal needle built therein acts as a susceptor 122, and generates heat under the action of the changing magnetic field generated by the induction coil 121 to bake the aerosol-forming substrate.

[0064] In some embodiments, the sensor 122 is arranged upstream of the air inlet channel and is not in direct contact with the aerosol-generating substrate. When the sensor 122 is heated, the heating energy can be effectively transferred to the airflow passing through it, so that the heated airflow enters the aerosol-forming product 20 to bake the aerosol-forming substrate.

[0065] The controller 15 can control the overall operation of the aerosol generating device 10. Specifically, the controller 15 controls the operation of the power supply 14 and the induction heater assembly 12, and can also control the operation of other devices. In some embodiments, the controller 15 includes a memory for storing program instructions corresponding to the temperature control method in any of the following method embodiments, and also includes a monitoring circuit or timer for monitoring the power supply time, a detection circuit for collecting the coil voltage, etc. Thus, the temperature control method in any of the following method embodiments is implemented, and the time for providing energy is controlled through the mapping relationship between the coil voltage and the receptor temperature, thereby controlling the temperature of the aerosol generating device to produce an aerosol with a good taste, and the amount of aerosol can be maintained in a smokeable state, thereby improving the taste and suction experience. In addition, getting rid of dependence on the chip, avoiding the problem of insufficient or excessive heat absorption of the aerosol forming matrix due to chip failure problems, and effectively reducing hardware costs.

[0066] The following describes the temperature control methods provided in some embodiments of the present application in conjunction with the exemplary application and implementation of the aerosol generating device provided in the embodiments of the present application. Figure 5 , Figure 5 It is a flow chart of the temperature control method provided in some embodiments of the present application. It can be understood that the execution subject of the control method can be one or more controllers.

[0067] like Figure 5 As shown, the method includes:

[0068] S10, receiving a heating start instruction, and entering a temperature rise phase according to the heating instruction.

[0069] The heating start instruction can be a signal generated by the user operating an input element, or it can be obtained by relying on a detection signal from a sensor, such as a trigger signal of the aerosol-forming product being inserted into the aerosol generating device through a pressure sensor or an electrical parameter sensor, or a signal detected by an airflow sensor to start the process through the user's inhalation.

[0070] When the aerosol generating device receives the start heating instruction, it controls the power supply to output direct current according to the start heating instruction to control the induction heater component to heat. Based on the heating principle of the aforementioned induction heater component, it can be known that the induction heater component first converts the electrical energy of the power supply into magnetic field energy, and then converts the magnetic field energy into heating energy. In other words, the heating energy of the induction heater component can be controlled according to the DC voltage output by the power supply.

[0071] The heating stage refers to a period of time after the aerosol generating device starts to heat up. During the heating stage, the temperature of the aerosol generating device needs to quickly reach a preset temperature. The preset temperature refers to the working temperature of the aerosol generating device. By controlling the aerosol generating device to reach the working temperature, the aerosol generating product is in the best baking state. It should be noted that before controlling the aerosol generating device to reach the preset temperature, the temperature of the aerosol generating device also needs to be controlled to reach the Curie temperature of the first receptor and the second receptor to determine the mapping relationship between the temperature of the receptor and the coil voltage of the induction coil. The working temperature of the aerosol generating device is less than the first Curie temperature of the first receptor and greater than the second Curie temperature of the second receptor.

[0072] S20. During the temperature rising stage, collecting the coil voltage of the induction coil to determine a first sudden change voltage and a second sudden change voltage of the induction coil.

[0073] Specifically, when the power supply inputs electric energy to the induction heater assembly and the induction coil forms an alternating current based on the electric energy, the induction coil will output a corresponding coil voltage of the induction coil based on the alternating current. At this time, the controller will collect the coil voltage of the induction coil based on the sampling frequency, and store the coil voltage of the induction coil according to the sampling time. Optionally, the sampling frequency can be in microseconds or milliseconds.

[0074] In some embodiments, Figure 6As shown, the horizontal axis is the operating time of the aerosol generating device, and the vertical axis is the coil voltage value collected by the controller based on the sampling frequency during the operating time. Among them, before the t2 moment is the heating stage. When the aerosol generating device receives the start heating instruction, the power supply will output a DC voltage to the induction heater component to make the induction heater component enter the heating stage. In this heating stage, the temperature of the sensor will continue to rise, and due to the characteristics of the negative temperature coefficient of the second sensor, when the temperature of the sensor reaches the second Curie temperature corresponding to the second sensor, the coil voltage collected by the controller is the second mutation voltage, that is, the minimum value of the coil voltage (t1 moment); when the temperature of the sensor continues to rise, the resistance of the second sensor is almost zero. At this time, only the first sensor is working. As the temperature rises, the coil voltage of the induction coil also increases. When the temperature of the sensor reaches the first Curie temperature corresponding to the first sensor, the coil voltage collected by the controller is the first mutation voltage, that is, the maximum value of the coil voltage (t2 moment). Optionally, the first Curie temperature is 200℃-350℃. The second Curie temperature is 400℃-600℃.

[0075] S30: Determine a mapping relationship between the coil voltage and the receptor temperature according to the first mutation voltage and the second mutation voltage.

[0076] When the induction heater assembly enters the heating stage, the rising value interval of the coil voltage is determined based on the first sudden voltage and the second sudden voltage, such as Figure 6 As shown, the second mutation voltage is at time t1, and the first mutation voltage is at time t2. The slope of the rising numerical interval can be calculated according to the first Curie temperature, the first mutation voltage, the second Curie temperature, and the second mutation voltage. Based on the slope, the mapping relationship between the coil voltage and the sensor temperature can be determined. The slope of the rising numerical interval can be determined based on the linear function, the Curie temperature, and the mutation voltage corresponding to the Curie temperature. It should be noted that the linear function is a linear function. By substituting the Curie temperature and the corresponding mutation voltage into the analytical expression of the linear function, the slope of the rising numerical interval can be determined.

[0077] S40. According to the mapping relationship, control the time for the power supply to provide energy to the induction heater assembly to control the temperature of the aerosol generating device.

[0078] It is understandable that the aerosol generating device also includes a suction stage. During the suction stage, the user will inhale the smoke that has been generated, and a new cold air flow will enter the interior of the aerosol generating product, causing the temperature of the receptor to drop rapidly and the coil voltage to drop accordingly. At this time, based on the current coil voltage and the mapping relationship, the power supply is controlled to provide energy to the induction heater assembly for a time, so that the temperature of the receptor is increased to control the temperature of the aerosol generating device to a preset temperature. Among them, the preset temperature is the working temperature of the receptor. When the temperature of the receptor is at the preset temperature, the aerosol generated after baking can quickly reach a smokable state and maintain a smokable state.

[0079] It can be known that after determining the mapping relationship between the coil voltage and the sensor temperature, the coil voltage of the induction coil can be adjusted according to the mapping relationship by adjusting the time when the power supply outputs energy, thereby adjusting the temperature of the sensor.

[0080] In some embodiments, after obtaining the current coil voltage of the induction coil, the preset temperature of the aerosol generating device is obtained, and the preset coil voltage corresponding to the preset temperature is determined according to the mapping relationship, and the difference between the preset coil voltage and the current coil voltage is determined to determine the power supply time for the power supply to provide energy according to the difference, and finally, energy is provided to the aerosol generating device according to the power supply time so that the temperature of the aerosol generating device is the preset temperature.

[0081] In summary, the temperature control method provided in the embodiment of the present application determines the mapping relationship between the receptor temperature and the coil voltage by determining the corresponding coil voltage based on the Curie temperature of the material of the receptor and the Curie temperature of the first receptor material and the second receptor material. Finally, when the aerosol generating device bakes the aerosol-forming matrix, the coil voltage of the induction coil is controlled by controlling the time for the power supply to provide energy to the induction heater assembly, thereby controlling the temperature of the induction heater assembly to the optimal temperature, so that the aerosol generated after baking can quickly reach a smokable state and maintain a smokable state. Furthermore, the taste and suction experience can be improved. In addition, by determining the mapping relationship between the receptor temperature and the coil voltage, the dependence on the chip can be eliminated, and the problem of insufficient or excessive heat absorption of the aerosol-forming matrix due to chip failure can be avoided. In addition, the hardware cost can be effectively reduced.

[0082] It should be noted that the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0083] Through the description of the above implementation methods, ordinary technicians in this field can clearly understand that each implementation method can be implemented by means of software plus a general hardware platform, and of course, it can also be implemented by hardware. Ordinary technicians in this field can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Under the concept of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present application as described above, which are not provided in detail for the sake of simplicity. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A temperature control method, applied to an aerosol generating device, characterized in that: The aerosol generating device comprises an induction heater assembly and a power source, wherein the induction heater assembly comprises an induction coil and a susceptor, wherein the induction coil is configured to generate a changing magnetic field when a changing current flows through the induction coil, and the susceptor is configured to be penetrated by the changing magnetic field generated by the induction coil to generate heat, thereby heating the aerosol-forming substrate to generate an aerosol, and the power source is used to provide energy to the induction heater assembly; The method comprises: Receiving a heating start instruction and entering a heating phase according to the heating instruction; In the heating stage, collecting the coil voltage of the induction coil to determine a first sudden change voltage and a second sudden change voltage of the induction coil; Determine a mapping relationship between the coil voltage and the receptor temperature according to the first mutation voltage and the second mutation voltage; According to the mapping relationship, the time during which the power supply provides energy to the induction heater assembly is controlled to control the temperature of the aerosol generating device.

2. The method according to claim 1, characterized in that The receptor comprises a first receptor composed of a first receptor material and a second receptor composed of a second receptor material, and the first sudden voltage and the second sudden voltage of the induction coil are determined, comprising: The first sudden change voltage and the second sudden change voltage of the induction coil are determined according to the pre-stored first Curie temperature and the second Curie temperature.

3. The method according to claim 2, characterized in that The first sudden change voltage is the maximum value of the coil voltage, and the second sudden change voltage is the minimum value of the coil voltage.

4. The method according to claim 3, characterized in that The determining the mapping relationship between the coil voltage and the sensor temperature according to the first mutation voltage and the second mutation voltage includes: Determining a rising value interval of the coil voltage according to the first sudden voltage and the second sudden voltage; Determining the slope of the rising numerical interval; Based on the slope, a mapping relationship between the coil voltage and the susceptor temperature is determined.

5. The method according to claim 2, characterized in that: The first Curie temperature is 200°C-350°C.

6. The method according to claim 5, characterized in that The second Curie temperature is 400°C-600°C.

7. The method according to claim 1, characterized in that According to the mapping relationship, controlling the time for the power supply to provide energy to the induction heater assembly to control the temperature of the aerosol generating device includes: Acquiring a current coil voltage of the induction coil; Based on the current coil voltage and the mapping relationship, the time for the power supply to provide energy to the induction heater assembly is controlled to control the temperature of the aerosol generating device to a preset temperature.

8. The method according to claim 7, characterized in that The controlling the time for the power supply to provide energy to the induction heater assembly based on the current coil voltage and the mapping relationship, so as to control the temperature of the aerosol generating device to a preset temperature, comprises: Obtaining a preset temperature of the aerosol generating device; Based on the mapping relationship, determining a preset coil voltage corresponding to the preset temperature; Determine a difference between the current coil voltage and the preset coil voltage, so as to determine a power supply time for the power supply to provide energy according to the difference; The aerosol generating device is provided with energy according to the power supply time, so that the temperature of the aerosol generating device is a preset temperature.

9. An aerosol generating device, characterized in that: include: An induction heater assembly, comprising an induction coil and a susceptor, wherein the induction coil is configured to generate a changing magnetic field when a changing current flows through the induction coil, and the susceptor is configured to be penetrated by the changing magnetic field generated by the induction coil to generate heat, thereby heating the aerosol-forming substrate to generate an aerosol; a power source for providing energy to the induction heater assembly; A controller, wherein the controller is connected to the induction heater assembly and the power supply, and is used to execute the temperature control method according to any one of claims 1 to 8.

10. The aerosol generating device according to claim 9, characterized in that The susceptor comprises a first susceptor composed of a first susceptor material and a second susceptor composed of a second susceptor material; The first sensing material has a positive temperature coefficient of resistance, and the second sensing material has a negative temperature coefficient of resistance.

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