Control method for aerosol-generating device and aerosol-generating device

Abstract

The embodiment of the invention provides a control method for an aerosol generating device and the aerosol generating device. The aerosol generating device comprises a power source; the accommodating cavity is used for accommodating at least part of the aerosol generating product; the heating assembly comprises a conductive element with a resistance temperature coefficient characteristic, the resistance value of the conductive element is configured to change based on the temperature change, and the heating assembly is arranged around the accommodating cavity to heat the aerosol generating product; a detection circuit configured to detect an electrical parameter of the conductive element associated with temperature; and a controller; the control method comprises the following steps: detecting an electrical parameter of the conductive element associated with temperature; according to the electrical parameters, the power source is controlled to start energy supply to the heating assembly in the current time period, and the energy supply amount in the current time period meets the set energy.

Description

Technical Field

[0001] Embodiments of the present application relate to the technical field of heat-not-burn aerosol generation, and in particular to a control method for an aerosol generating device and an aerosol generating device. Background Art

[0002] Smoking articles (eg, cigarettes, cigars, etc.) burn tobacco during use to produce tobacco smoke. People have attempted to replace these tobacco-burning articles by creating products that release compounds without combustion.

[0003] An example of such a product is a heating device that releases compounds by heating rather than burning a material. For example, the material may be an aerosol-generating product containing tobacco or other non-tobacco products, which may or may not contain nicotine. Known heating devices require a temperature sensor to provide temperature feedback. Specifically, a PID algorithm is usually used to continuously collect real-time temperature information of the heating element, and the output power of the power supply to the heating element is continuously adjusted and corrected based on the temperature information so that the temperature of the heating element meets the preset heating curve. Therefore, the detection accuracy, reaction sensitivity and feedback speed of the temperature detector are extremely high to prevent the temperature detection or feedback from being inaccurate or delayed, causing the temperature of the heating element to be too high or too low, thereby resulting in high production costs for the heating device. Summary of the invention

[0004] The present application provides a control method for an aerosol generating device and an aerosol generating device, which can meet the demand for heating an aerosol generating product to generate aerosol without adding a more accurate and sensitive temperature sensor, thereby helping to reduce costs.

[0005] One embodiment of the present application provides a method for controlling an aerosol generating device, comprising:

[0006] Power source;

[0007] a receiving chamber for receiving at least a portion of the aerosol generating article;

[0008] a heating assembly including a conductive element having a temperature coefficient of resistance characteristic, the resistance value of the conductive element being configured to change based on a temperature change, and the heating assembly being disposed around the receiving cavity to heat the aerosol generating article;

[0009] a detection circuit configured to detect an electrical parameter of the conductive element associated with temperature; and

[0010] Controller;

[0011] The control method comprises:

[0012] detecting an electrical parameter of the conductive element associated with temperature;

[0013] According to the electrical parameters, the power source is controlled to start supplying energy to the heating element in the current time period, wherein the energy supply amount in the current time period satisfies the set energy.

[0014] One embodiment of the present application provides an aerosol generating device, comprising:

[0015] Power source;

[0016] a receiving chamber for receiving at least a portion of the aerosol generating article;

[0017] a heating assembly including a conductive element having a temperature coefficient of resistance characteristic, the resistance value of the conductive element being configured to change based on a temperature change, and the heating assembly being disposed around the receiving cavity to heat the aerosol generating article;

[0018] a detection circuit configured to detect an electrical parameter of the conductive element associated with temperature; and

[0019] The controller is configured to obtain the electrical parameters and control the power source to start supplying energy to the heating component in a current time period according to the electrical parameters, wherein the energy supply in the current time period meets the set energy.

[0020] One embodiment of the present application provides an aerosol generating device, comprising:

[0021] Power source;

[0022] a receiving chamber for receiving at least a portion of the aerosol generating article;

[0023] a heating assembly comprising a conductive element comprising stainless steel, the conductive element having a resistance value configured to change based on a temperature change, the conductive element being connected to the power source to form a loop, and the conductive element being configured to heat the aerosol-generating article; and

[0024] A detection circuit, comprising a processor having a first acquisition terminal and a second acquisition terminal, wherein the first acquisition terminal and the second acquisition terminal are respectively connected to different positions on the conductive element, and the processor is configured to obtain an electrical parameter of the conductive element associated with temperature based on at least a first parameter acquired by the first acquisition terminal and a second parameter acquired by the second acquisition terminal;

[0025] The controller is configured to obtain the electrical parameters and control the power source to start supplying energy to the heating component in a current time period according to the electrical parameters, wherein the energy supply in the current time period meets the set energy.

[0026] In the above-mentioned control method for an aerosol generating device and an aerosol generating device, the heating component includes a conductive element having a resistance temperature coefficient characteristic, the detection circuit detects the electrical parameters associated with the conductive element and the temperature, and the controller controls the power source to start the energy supply to the heating component in the current time period according to the acquired electrical parameters associated with the conductive element and the temperature, and the energy supply amount in the current time period is set in advance, and the energy supply amount in the current time period is independent of the acquired electrical parameters. Therefore, there is no need to add a more accurate and sensitive temperature sensor to meet the demand for generating aerosols by heating aerosol generating products, thereby reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] Figure 1 is a schematic diagram of an aerosol generating device provided by an embodiment;

[0029] Figure 2 is a schematic diagram of an aerosol generating device provided by an embodiment;

[0030] Figure 3 is a schematic diagram of an aerosol generating device provided by an embodiment;

[0031] Figure 4 is a schematic diagram of an aerosol generating device provided by an embodiment;

[0032] Figure 5 is a schematic diagram of an aerosol generating device provided by an embodiment;

[0033] Figure 6 It is a schematic diagram of electrical connection of an aerosol generating device when the conductive element has a heat conducting function provided by an embodiment;

[0034] Figure 7 It is a schematic diagram of electrical connection of an aerosol generating device when the conductive element has a heating function provided by an embodiment;

[0035] Figure 8 is a schematic diagram of electrical connections of an aerosol generating device when the heating element adopts electromagnetic heating provided by another embodiment;

[0036] Fig. 9 is a schematic diagram of a control method for an aerosol generating device provided by an embodiment;

[0037] Fig.10 is a schematic diagram of a control method of an aerosol generating device provided by another embodiment;

[0038] In the figure:

[0039] 1. Heating component; 11. Accommodating cavity; 12. Conductive element; 13. Heating element; 14. Heat-conducting element; 15. Insulating layer;

[0040] 2. Aerosol generating products;

[0041] 3. Power source;

[0042] 4. Circuit board; 41. Processor; 42. Sampling resistor; 43. Power supply circuit; 44. First resistor; 45. Second resistor; 46. Controllable switch;

[0043] 5. Magnetic field generator. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] The terms "first", "second", "third" in the present application are only used for descriptive purposes, and cannot be interpreted as indicating or suggesting relative importance or implicitly indicating the quantity or order of the indicated technical features. In the present application embodiment, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative position relationship or movement conditions between the components under a certain posture (as shown in the accompanying drawings), and if the posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, the process, method, system, product or equipment comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or equipment.

[0046] Reference to "embodiments" herein means that the features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0047] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be one or more central elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0048] You can refer to Figure 1-Figure 5 One embodiment of the present application provides an aerosol generating device, which is a device that is coupled or interacts with an aerosol generating article 2 to form an inhalable aerosol.

[0049] As used herein, the term "aerosol-generating article" refers to an article comprising an aerosol-forming substrate that, when heated, releases volatile compounds that can form an aerosol. In an embodiment, the aerosol-generating article is removably coupled to an aerosol-generating device. The article may be disposable or reusable.

[0050] Aerosol-forming substrates may include solid aerosol-forming substrates.Solid aerosol-forming substrates may include tobacco-containing materials, and the tobacco-containing materials contain volatile tobacco flavor compounds released from the aerosol-forming substrate when heated.Solid aerosol-forming substrates may include non-tobacco materials.Solid aerosol-forming substrates may include tobacco-containing materials and do not contain tobacco materials.

[0051] Aerosol formation matrix can comprise liquid aerosol formation matrix.Liquid aerosol formation matrix can comprise the liquid of tobacco-containing material that contains volatile tobacco flavor component, can also be the liquid that comprises non-tobacco material.Liquid aerosol formation matrix can comprise water, solvent, ethanol, plant extract, spices, flavoring agent or vitamin mixture etc., and spices can comprise betel nut extract, menthol, European mint, green mint oil, various fruity fragrance components etc., but is not limited to this.Flavoring agent can comprise the composition that can provide various fragrance or local flavor to the user.Vitamin mixture can be the mixture that is mixed with at least one in vitamin A, vitamin B, vitamin C and vitamin E, but is not limited to this.

[0052] The aerosol generating device has a containing cavity 11 inside, and at least a part of the aerosol generating product 2 can be combined in the containing cavity 11. The aerosol generating device can be an electrically operated device, and the heating component 1 adapted for the aerosol generating device can be an electric heater, so the heating component 1 can generate heat when electricity is provided, and at least part of the heat is transferred to the aerosol generating product 2 in the containing cavity 11, so that the aerosol generating product 2 is heated.

[0053] The aerosol generating device further includes a power source 3 and a circuit board 4. The power source 3 may include any suitable battery or battery cell. The circuit board 4 has one or more processors 41. The circuit board 4 is electrically connected to the power source 3 and the heating component 1 to control the power source 3 to provide power to the heating component 1. The circuit board 4 can also control other operations of the aerosol generating device, such as controlling a sensory prompter in the aerosol generating device to generate sensory signals such as sound, light or vibration.

[0054] The heating component 1 includes a conductive element 12 having a resistance temperature coefficient characteristic, and the resistance value of the conductive element 12 changes with the change of its temperature. The resistance temperature coefficient of the conductive element 12 can be a positive temperature coefficient, so that the resistance value of the conductive element 12 increases with the increase of temperature; the resistance temperature coefficient of the conductive element 12 can be a negative temperature coefficient, so that the resistance value of the conductive element 12 decreases with the increase of temperature. In one example, the conductive element 12 can generate heat, so that it can cause the temperature to rise by heating itself; in one example, the conductive element 12 can be a non-heating element in the heating component 1, and the conductive element 12 can cause the temperature to rise by absorbing the heat of the heating element in the heating component 1, or absorbing the heat of the aerosol generating article 2.

[0055] Suitable conductive elements 12 include, but are not limited to, stainless steel, nickel alloys, cobalt alloys, chromium alloys, aluminum alloys, titanium alloys, zirconium alloys, hafnium alloys, niobium alloys, molybdenum alloys, tantalum alloys, tungsten alloys, tin alloys, gallium alloys, manganese alloys, or iron-containing alloys.

[0056] Based on this, we can refer to Figure 6-Figure 8 The circuit board 4 may also be provided with a detection circuit, the detection circuit including a processor 41, and the detection circuit is electrically connected to the conductive element 12 to detect an electrical parameter of the conductive element 12 associated with temperature. The electrical parameter includes a voltage value, a current value, a resistance value, or a resistivity, etc. For example, it may be a current value flowing through the conductive element 12, or a voltage value between two detection points on the conductive element 12, or a voltage value across two ends of a sampling resistor 42 connected in series with the conductive element 12, or a current value of a sampling resistor 42 connected in parallel with the conductive element 12, or a resistance value / resistivity of the conductive element 12.

[0057] For more specific information, please refer to Figure 6-Figure 8 A power supply circuit 43 electrically connected to the power source 3 is arranged on the circuit board 4. The processor 41 can be connected to the power source 3 by connecting to the power supply circuit 43. The energy of the power source 3 can be supplied to the heating component 1 through the power supply circuit 43. One or more controllers control the power source 3 to supply energy to the heating component 1 through the power supply circuit 43.

[0058] The conductive element 12 is connected to the power source 3 to form a loop. Figure 6-Figure 8In the illustrated embodiment, the power supply circuit 43 is arranged on the connection loop between the conductive element 12 and the power source 3, the anode output terminal and the cathode output terminal of the power source 3 can be arranged on the power supply circuit 43, and the conductive element 12 is connected between the anode output terminal and the cathode output terminal. More specifically, the detection circuit includes a third circuit and a fourth circuit, and the conductive element 12 is connected to the power supply circuit 43 through the third circuit and the fourth circuit and forms a loop with the power supply circuit 43. The third circuit can connect the anode output terminal and the anode connection terminal of the conductive element 12, and the fourth circuit can connect the cathode output terminal and the cathode connection terminal of the conductive element 12.

[0059] The processor 41 has multiple acquisition terminals for collecting data. Different acquisition terminals can collect data from different connection nodes. The processor 41 obtains the electrical parameters of the conductive element 12 associated with the temperature based on at least part of the collected data.

[0060] In one embodiment, reference may be made to Figure 6-Figure 8 , the acquisition end on the processor 41 includes a first acquisition end ADC1 and a second acquisition end ADC2, the detection circuit also includes a first line and a second line respectively connected to the first acquisition end ADC1 and the second acquisition end ADC2, the first line and the second line are connected to different positions on the conductive element 12, so that the first acquisition end ADC1 and the second acquisition end ADC21 are respectively connected to different positions on the conductive element 12. The first acquisition end ADC1 can collect a first parameter at a connection node between it and the conductive element 12 through the first line, and the second acquisition end ADC2 can collect a second parameter at a connection node between it and the conductive element 12 through the second line. The first parameter and the second parameter are associated with an electrical parameter of the conductive element 12 associated with temperature, and the processor 41 can obtain the electrical parameter of the conductive element 12 associated with temperature based at least on the first parameter and the second parameter.

[0061] For example, the processor 41 can calculate the voltage between two nodes where the conductive element 12 is connected to the first line and the second line based on the first parameter and the second parameter.

[0062] When the resistance value of the conductive element 12 changes due to the temperature change of the conductive element 12, it will inevitably cause the voltage between the two connection nodes of the conductive element 12 to change or the current flowing through the conductive element 12 to change. Therefore, the electrical parameter of the conductive element 12 associated with temperature may include the voltage between the two nodes connected by the first circuit and the second circuit, or the voltage between the two nodes connected by the first circuit and the second circuit may be associated with the electrical parameter of the conductive element 12 associated with temperature, for example, the voltage may be combined with other parameters to further perform calculations to obtain the electrical parameter.

[0063] As an example, see Figure 6-Figure 8, a first resistor 44 is provided on the first circuit, and the first acquisition terminal ADC1 is connected to a connection node of the conductive element 12 through the first resistor 44, a second resistor 45 is provided on the third circuit, and the second acquisition terminal ADC2 is connected to another connection node of the conductive element 12 through the second resistor 45, and the first resistor 44 and the second resistor 45 have a large resistance value to reduce the contact resistance or parasitic resistance between the first circuit and the connection node of the conductive element 12, and reduce the contact resistance or parasitic resistance between the second circuit and another connection node of the conductive element 12, which helps to reduce the influence of the contact resistance or parasitic resistance on the acquisition parameters, for example, it can reduce the interference with the detection result of the voltage between the two connection nodes on the conductive element 12. More specifically, the resistance value of the first resistor 44 and the second resistor 45 can be greater than or equal to 1000Ω, or the resistance value of the first resistor 44 and the second resistor 45 can be greater than or equal to 1000 times the low contact resistance or parasitic resistance between the circuit and the connection node.

[0064] In one embodiment, reference may be made to Figure 6-Figure 8 The detection circuit also includes a sampling resistor 42. The sampling resistor 42 is arranged on the circuit board 4 and thus away from the heating component 1. Therefore, the heat generated by the heating component 1 has little effect on the temperature of the sampling resistor 42. The sampling resistor 42 can be made of a material that does not have a resistance temperature coefficient characteristic or has a very weak resistance temperature coefficient characteristic. During the operation of the heating component 1 or after the aerosol generating device is started, the resistance value of the sampling resistor 42 is substantially constant.

[0065] The sampling resistor 42 may be disposed in a loop between the conductive element 12 and the power source, that is, may be disposed in the third circuit or the fourth circuit and connected in series with the conductive element 12 .

[0066] The processor 41 is provided with a third acquisition terminal ADC3, which is connected to one side of the sampling resistor 42 and is used to acquire a third parameter. The processor 41 can acquire the electrical parameter associated with the temperature of the conductive element 12 based on the third parameter, including acquiring the electrical parameter associated with the temperature of the conductive element 12 based on the third parameter alone, or acquiring the above electrical parameter based on the third parameter combined with other parameters (such as the first parameter and / or the second parameter, etc.).

[0067] As an example, the third parameter is a voltage parameter, and the processor 41 can calculate the current value in the loop between the conductive element 12 and the power supply circuit 43 based on the third parameter and the resistance value of the sampling resistor 42, thereby obtaining the current flowing through the conductive element 12.

[0068] When the resistance value of the conductive element 12 changes due to the temperature change of the conductive element 12, it will inevitably cause the voltage between the two connection nodes of the conductive element 12 to change or the current flowing through the conductive element 12 to change. Therefore, the electrical parameter associated with the temperature of the conductive element 12 may include the current value in the loop between the conductive element 12 and the power supply circuit 43, or the processor 41 may obtain the electrical parameter associated with the temperature of the conductive element 12 based on the current value in the loop between the conductive element 12 and the power supply circuit 43 in combination with other parameters.

[0069] As an example, the processor 41 is provided with a first acquisition terminal ADC1, a second acquisition terminal ADC2, and a third acquisition terminal ADC3. The processor 41 can obtain the voltage between the two connection nodes of the conductive element 12 based on the first parameter and the second parameter collected by the first acquisition terminal ADC1 and the second acquisition terminal ADC2, and obtain the current value flowing through the conductive element 12 based on the third parameter and the resistance value of the sampling resistor 42, and then obtain the resistance value between the two connection nodes of the conductive element 12 or obtain the resistivity of the conductive element 12 based on the voltage and current values. The electrical parameter of the conductive element 12 associated with temperature may include the resistance value or resistivity of the conductive element 12.

[0070] Alternatively, the processor 41 can obtain the voltage between the two connection nodes of the conductive element 12 based on the first parameter and the second parameter collected by the first acquisition terminal ADC1 and the second acquisition terminal ADC2, and simultaneously obtain the current value flowing through the conductive element 12 based on the third parameter and the resistance value of the sampling resistor 42, and then obtain the electric power of the conductive element 12 based on the voltage and current values. The electrical parameters of the conductive element 12 associated with the temperature may include the electric power.

[0071] As an example, the sampling resistor 42 is arranged between the anode output terminal of the power source and the anode connection terminal of the conductive element. In other words, the sampling resistor 42 is arranged on the third circuit. In addition, the third acquisition terminal ADC3 is connected between the sampling resistor 42 and the anode output terminal. Based on this, the processor 41 can obtain the current value on the third circuit based on the third parameter, or the processor 41 can calculate the voltage across the sampling resistor 42 in combination with the third parameter and the second parameter.

[0072] When the resistance value of the conductive element 12 changes due to the temperature change of the conductive element 12 , it will inevitably cause the voltage between the two ends of the sampling resistor 42 connected in series with the conductive element 12 to change or the current flowing through the sampling resistor 42 to change.

[0073] The electrical parameter of the conductive element 12 associated with temperature may include the voltage across the sampling resistor 42 or the current value flowing through the sampling resistor 42, or the processor 42 may obtain the electrical parameter of the conductive element 12 associated with temperature based on the current value or voltage combined with other parameters.

[0074] As an example, the resistance values ​​of the first resistor 44 and the second resistor 45 may be much greater than the resistance value of the sampling resistor 42 . For example, the resistance values ​​of the first resistor 44 and the second resistor 45 may be more than 1000 times the resistance value of the sampling resistor 42 .

[0075] It should be noted that in other embodiments where the detection circuit includes the sampling resistor 42 , the sampling resistor 42 may be connected in parallel with the conductive element 12 .

[0076] The first aspect of this application can be referred to Figure 7 The provided conductive element 12 is capable of generating heat, that is, the conductive element 12 belongs to the heating element 13 in the heating component 1 , or is a component of the heating element 13 in the heating component 1 .

[0077] Based on an embodiment of the first aspect, the heating component 1 also includes a heat-conducting element 14, which can provide support for the conductive element 12 or improve the heat transfer efficiency of the conductive element 12. The conductive element 12 can be joined to the heat-conducting element 14 and, based on this, be retained in the heating component 1 to form a component of the heating component 1.

[0078] As an example, the heat-conducting element 14 is closer to the aerosol-generating article 2 in the accommodating cavity 11 than the conductive element 12 , and the heat generated by the conductive element 12 needs to be conducted through the heat-conducting element 14 to heat the aerosol-generating article 2 .

[0079] In order to reduce the heat consumption of the heat-conducting element 14 when conducting heat, the heat-conducting element 14 can be made of a good heat conductor, and the thermal conductivity of the good heat conductor at 23°C and 50% relative humidity is at least 10W / (m·k), preferably at least 40W / (m·k), and more preferably at least 100W / (m·k). Suitable good heat conductors include but are not limited to: graphite, graphene, aluminum, copper, zinc, steel, silver, thermally conductive polymers, stainless steel, aluminum alloys, or any combination or alloy thereof. The heat-conducting element 14 can be made of the same material as the conductive element 12. The heat-conducting element 14 can be configured in a tubular shape.

[0080] The conductive element 12 may be a metal tube, a metal mesh or a metal wire; the conductive element 12 may be a heating layer printed on / deposited on or formed in other ways on the thermal conductive element 14 .

[0081] It should be noted that the heat-conducting element 14 is optional but not mandatory, that is, the conductive element 12 can directly heat the aerosol generating article 2 , thereby eliminating the need for the heat-conducting element 14 to transfer heat to the aerosol generating article 2 .

[0082] Based on an embodiment of the first aspect, reference can be made to Figure 7, the conductive element 12 includes a resistive heating element. The conductive element 12 is electrically connected to the power source 3 or the power supply circuit 43, and generates Joule heat based on the energy provided by the power source 3. In one example, a detection circuit is electrically connected between the power supply circuit 43 and the conductive element 12, and the power supply circuit 43 can supply power to the conductive element 12 to generate Joule heat through the third circuit and the fourth circuit in the detection circuit. At the same time, the detection circuit can detect the electrical parameters of the conductive element 12 associated with the temperature, so that the conductive element 12 can generate Joule heat while the detection circuit detects the electrical parameters of the conductive element 12 associated with the temperature. In one example, reference can be made to Figure 7 The detection circuit includes a sampling resistor 42 and a controllable switch 46 connected in parallel with the sampling resistor 42. The processor 41 is electrically connected to the controllable switch 46, and the processor 41 can control the controllable switch 46 to be turned on or off. When the controllable switch 46 is turned on, the sampling resistor 42 is short-circuited. When it is necessary to provide power to the conductive element 12 so that the conductive element 12 generates Joule heat, the controllable switch 46 can be controlled to be turned on, so that the sampling resistor 42 is short-circuited. When it is necessary to detect the electrical parameters related to the temperature of the conductive element 12, the controllable switch 46 can be controlled to be turned off. It should be noted that the controllable switch 46 is optional but not mandatory.

[0083] Based on an embodiment of the first aspect, reference can be made to Figure 2 , Figure 4 , Figure 5 and Figure 7 , the conductive element 12 includes an electromagnetic heating element, which can generate heat in a changing magnetic field. Therefore, the aerosol generating device is also provided with a magnetic field generator 5 for generating a changing magnetic field. The magnetic field generator 5 can generate a changing magnetic field based on the energy supplied by the power source 3. The magnetic field heater 5 can be one or more induction coils, and the electromagnetic heating element is arranged within the range of the magnetic field generated by the magnetic field generator 5.

[0084] The electromagnetic heating element may include metal or carbon. In one embodiment, the electromagnetic heating element may include ferromagnetic materials, such as ferrite, ferromagnetic steel or stainless steel. In one embodiment, the electromagnetic heating element includes nickel-iron alloy. In one embodiment, the electromagnetic heating element includes 400 series stainless steel, and the 400 series stainless steel includes 410 grade, 420 grade or 430 grade stainless steel.

[0085] In this embodiment, the power supply circuit 43 is electrically connected to the magnetic field heater 5 to provide the magnetic field heater 5 with power to generate a changing magnetic field, and the conductive element 12 of the electromagnetic heating element is heated accordingly. The power supply circuit 43 can be connected to the magnetic field generator alone to provide power for the magnetic field generator to generate a changing magnetic field. The power supply circuit 43 can provide voltage or current to the conductive element 12 through the third circuit and the fourth circuit in the detection circuit. At the same time, the detection circuit can detect the electrical parameters of the conductive element 12 associated with the temperature based on this. In order to ensure the accuracy of the detected electrical parameters, the controller can control the power supply circuit 43 to intermittently provide power to the magnetic field heater 5. At the same time, in the gap when the power supply circuit 43 stops providing power to the magnetic field heater 5, the processor 41 controls the detection circuit to detect the electrical parameters of the conductive element 12 associated with the temperature, that is, the magnetic field heater 5 and the detection circuit can be controlled to work in turns.

[0086] Based on the first aspect, the conductive element 12 can generate heat, is the heating element 13 in the heating component 1 or is a component of the heating element 13, and the electrical parameter of the conductive element 12 associated with the temperature is an electrical parameter directly associated with the heating element 13. Then, the controller can control the start time or end time of the heating of the conductive element 12 based on the electrical parameter, or perform real-time heating power regulation on the conductive element 12, or perform heating limit on the heating component 1.

[0087] The second aspect of this application can refer to Figure 6 and Figure 8 The provided conductive element 12 is a non-heating element in the heating component 1. The conductive element 12 can conduct heat or absorb heat. The heating component 1 also includes a heating element 13. The conductive element 14 increases the temperature by absorbing the heat generated by the heating element 13.

[0088] Based on an embodiment of the second aspect, at least a portion of the conductive element 12 forms a heat-conducting element 14 close to the heating element 13 or forms a component of the heat-conducting element 14, and the heating element 13 can be joined to the heat-conducting element 14, thereby being retained in the heating component 1 to form a component of the heating component 1.

[0089] The heating element 13 may be any suitable heating element 13, for example, a resistive heating element, or an electromagnetic heating element, etc. The heating element 13 may be a metal tube, a metal mesh, or a metal wire; the heating element 13 may be a heating layer printed / deposited on or formed on the heat-conducting element 14 by other means.

[0090] As an example, see Figure 6The heating element 13 is a resistive heating element. The power supply circuit 43 can be connected to the heating element 13 alone to provide power for the heating element 13 to generate Joule heat. The power supply circuit 43 can provide voltage or current to the conductive element 12 through the third circuit and the fourth circuit in the detection circuit. At the same time, the detection circuit can detect the electrical parameters of the conductive element 12 associated with the temperature based on this.

[0091] In this example, detecting the electrical parameter of the conductive element 12 associated with temperature and causing the heating element 13 to generate heat may be independent of each other, and the two may be performed simultaneously or separately.

[0092] As an example, see Figure 2-6 The heating element 13 is an electromagnetic heating element. The power supply circuit 43 can be connected to the magnetic field generator alone to provide power for the magnetic field generator to generate a changing magnetic field. The power supply circuit 43 can provide a voltage or current to the conductive element 12 through the third circuit and the fourth circuit in the detection circuit. At the same time, the detection circuit can detect the electrical parameters of the conductive element 12 associated with the temperature based on this.

[0093] In this example, detecting the electrical parameter of the conductive element 12 associated with temperature and causing the heating element 13 to generate heat may be independent of each other, and the two may be performed simultaneously or separately.

[0094] When the heating element 13 is connected to the conductive element 12 , an insulating layer 15 is provided between the heating element 13 and the conductive element 12 . The insulating layer 15 may be a high temperature adhesive tape or an insulating oxide.

[0095] Based on an embodiment of the second aspect, reference can be made to Figure 6 and Figure 8 The conductive element 12 is closer to the aerosol generating product 2 in the accommodating cavity 11 than the heating element 13 , and the heat generated by the heating element 13 needs to be conducted through the conductive element 12 to heat the aerosol generating product 2 .

[0096] Based on an embodiment of the second aspect, the conductive element 12 includes a magnetic field generator 5 capable of generating a changing magnetic field, the power source 3 supplies energy for generating a changing magnetic field to the magnetic field generator 5, and the heating element 13 is an electromagnetic heating element capable of generating heat in a changing magnetic field.

[0097] In this embodiment, the electromagnetic heating element is a component of the aerosol generating device and is within the range of the magnetic field generated by the magnetic field generator 5 .

[0098] In this embodiment, the conductive element 12 includes a magnetic field generator 5, and the electrical parameters of the conductive element 12 associated with temperature may include the degree of coupling between the magnetic field generator 5 and the electromagnetic heating element, or may be the quality factor of the magnetic field generator 5, or may be the voltage across the magnetic field generator 5 or other electrical parameters that can characterize the temperature of the conductive element 12.

[0099] Based on the second aspect, the conductive element 12 includes a thermal conductive element 14 or a component of the thermal conductive element 14. The temperature of the conductive element 12 is affected by the heating element 13. For example, the thermal conductive element 12 can absorb at least part of the heat released by the heating element 13 to increase the temperature, so that the temperature of the conductive element 12 is associated with the temperature of the heating element 13. The temperature of the heating element 13 can be characterized by the temperature-related electrical parameters of the conductive element 12, so that the temperature-related electrical parameters of the conductive element 12 are indirectly associated with the heating element 12, and then the controller can control the heating start time or heating end time of the heating element 12 based on the electrical parameters, or perform real-time heating power regulation of the heating element 13.

[0100] The third aspect of this application can refer to Figure 3 The conductive element 12 provided belongs to the non-heating element in the heating component 1. The heating component 1 also includes a magnetic field generator 5 for generating a changing magnetic field. The aerosol generating device is adapted to the aerosol generating product 2 having an electromagnetic heating element 13 inside. When the aerosol generating product 2 is combined with the accommodating cavity 11, the conductive element 12 contacts the aerosol generating product 2, or the conductive element 12 is adjacent to the aerosol generating product 2, so that the conductive element 12 can absorb the heat of the aerosol generating product 2 to increase the temperature. The heating element 13 may not be provided inside the aerosol generating device, and the heating element 13 may be provided in the aerosol generating product 2.

[0101] When the aerosol generating product 2 is combined with the containing cavity 11 , the electromagnetic heating element 13 inside the aerosol generating product 2 is within the range of the magnetic field generated by the magnetic field generator 5 .

[0102] Based on the third aspect, the temperature of the conductive element 12 is affected by the aerosol generating product 2, so that the temperature of the conductive element 12 is correlated with the temperature of the aerosol generating product 2, and the temperature of the aerosol generating product 2 can be characterized by the electrical parameters of the conductive element 12 that are correlated with the temperature, and then the controller can control the working start time or working end time of the magnetic field generator 5 in one time period or multiple time periods based on the electrical parameters, or perform real-time regulation on the size of the magnetic field generated by the magnetic field generator 5.

[0103] Based on the first aspect and the second aspect, in one embodiment, reference may be made to Figure 4The heating assembly 1 includes an internal heater, at least part of which is arranged in the accommodating cavity 11 and is used to be inserted into the interior of the aerosol generating article 2, so as to heat the aerosol generating article 2 inside the aerosol generating article 2.

[0104] The electrically conductive element 12 is a constituent part of the internal heater, which may be at least partially inserted into the interior of the aerosol-generating article 2 .

[0105] Based on the first aspect and the second aspect, in one embodiment, reference may be made to Figure 1-Figure 3 The heating assembly 1 comprises an external heater, which surrounds at least a portion of the accommodating cavity 11 and is capable of heating the aerosol generating product 2 accommodated therein.

[0106] The conductive element 12 is a component of the external heater and can be configured in a tubular shape. The tubular conductive element 12 can be made of a metal tube, or can be formed by curling a metal mesh into a tubular shape, or can be formed by curling a metal sheet, or can be formed by winding a metal wire into a spiral shape. The tubular conductive element 12 can define at least part of the circumferential boundary of the accommodating cavity 11.

[0107] Based on the first aspect and the second aspect, in one embodiment, reference may be made to Figure 5 The heating component 1 includes an air heater, which is arranged upstream of the accommodating cavity 11 along the air flow direction, and is used to heat the air flowing through so that the air flowing through forms hot air. The hot air then enters the aerosol generating product 2 in the accommodating cavity 11 to heat the aerosol generating product 2.

[0108] Based on the first aspect, the second aspect and the third aspect, the cycle of the heating component 1 baking an aerosol generating product may include multiple time periods, and the controller on the circuit board 4 can control the power source 3 to supply the preset energy corresponding to the time period to the heating component 1 in one or more time periods, and the "preset energy" is a pre-set energy, which is an energy supply amount that does not need to be regulated according to the real-time temperature of the conductive element 12. In other words, the amount of preset energy supplied to the heating component 1 by the power source 3 in the corresponding time period is basically not affected by the electrical parameters associated with the temperature of the conductive element 12. The controller can regulate the amount of energy supplied to the heating component 1 in the corresponding time period without the temperature feedback of the heating component 1 provided by the detection circuit. Therefore, there is no need to add a more accurate and sensitive temperature sensor to meet the demand for heating aerosol generating products to generate aerosols, so the cost can be reduced.

[0109] In a fourth aspect of the present application, a control method for an aerosol generating device is provided, wherein the controller is configured to control the power source 3 to supply preset energy corresponding to the time period to the heating component 1 in multiple time periods. The method comprises:

[0110] The power source 3 is controlled to start supplying energy to the heating component 1 during the current time period, wherein the energy supply during the current time period satisfies the set energy.

[0111] Based on the first embodiment of the fourth aspect, before controlling the power source 3 to start the energy supply of the heating component 1 in the current time period, the control method further includes detecting the electrical parameter associated with the temperature of the conductive element 12, and then starting the energy supply of the heating component 1 in the current time period based on the electrical parameter. Therefore, the electrical parameter can be used as the basis for the controller to start the energy supply of the heating component 1 in the current time period, rather than the basis for the amount of energy supply provided by the power source 3 to the heating component 1 in the current time period. The generation of aerosol by the aerosol generating article 2 depends on the heat absorbed by it, which is not equivalent to the temperature of the heating component 1. Therefore, the preset energy of the corresponding time period of the present application is set according to the heat required to be absorbed by the aerosol generating article 2 to generate aerosol in the corresponding time period. Therefore, the present application can only detect the electrical parameter associated with the temperature of the conductive element 12. Although there may be hysteresis or other problems when using the electrical parameter to characterize the temperature of the conductive element 12, it is sufficient to meet the demand of heating the aerosol generating article 2 to generate aerosol in combination with the supply of preset energy in multiple time periods.

[0112] As an example of starting the current energy supply according to the electrical parameters, the aerosol generating device heats the aerosol generating product 2 in two stages: a preheating stage and a puffing stage. The preheating stage is used to quickly or significantly raise the temperature of the heating component 1 or the aerosol generating product 2 from room temperature or from the initial temperature to the target temperature to meet the user's need to quickly take the first puff. The user's puffing of the aerosol generating product 2 mainly occurs in the puffing stage.

[0113] Based on this example, in the preheating stage, the aerosol generating device can use a temperature sensor or can use the electrical parameters associated with the temperature of the conductive element 12 to feed back the temperature of the heating component 1 to the controller in real time, and then the controller can adjust the power or energy provided by the power source 3 to the heating component 1 based on the temperature feedback result. However, in multiple time periods in the puffing stage, the electrical parameters associated with the temperature of the conductive element 12 are mainly used as the basis for the controller to start the energy supply to the heating component 1 in the current time period, and are not used as the basis for the controller to terminate the energy supply of the power source 3 to the heating component 1, nor as the basis for the controller to adjust the energy supply amount provided by the power source 3 to the heating component 1. In multiple time periods in the puffing stage, the controller controls the power source 3 to supply the heating component 1 with energy to meet the preset energy requirements of the corresponding time period.

[0114] In the suction stage, the preset energy of different time periods can be the same. Based on the energy formula: Q = P·t, Q is energy, P is electric power, and t is the duration of output electric power. In order to ensure that the preset energy of different time periods in the suction stage is the same, for example: the controller can control the power source 3 to output the same electric power to the heating component 1 in each time period according to the preheating energy of each time period, and adjust the power source 3 to output the electric power of the heating component 1 in each time period to be equal; or for example: the controller can control the power source 3 to output different electric powers to the heating component 1 in each time period according to the preheating energy of each time period, and adjust the power source 3 to output the electric power of the heating component 1 in each time period to be unequal. It only needs to be adjusted to satisfy the product of the electric power and the output electric power duration in each time period to be equal.

[0115] During the inhalation phase, the preset energies of at least two time periods may be different. For example, as the aerosol generating substrate is consumed, the aerosol amount will decrease. In order to balance the aerosol amount, the controller may control the preset energy of at least one subsequent time period to be greater than the preset energy of at least one previous time period.

[0116] In the suction phase, the duration of at least two time periods may be the same or different. In some examples, each time period includes an energy supply time and a cooling time, so the duration of a time period may be the sum of the energy supply time and the cooling time. In the energy supply time, the power source 3 supplies energy to the heating component 1, and the total amount of energy supply is the preset energy corresponding to the time period; in the cooling time, the power source 3 stops the energy supply to the heating component 1 in the current time period. The "stopping the energy supply to the heating component 1 in the current time period" described in this application may include the power source 3 not supplying energy to the heating component 1, or only having a small amount of energy supply, so that the heating component 1 can cool naturally.

[0117] In the inhalation stage, the duration of a time period may be between 2.5s and 6s, preferably between 2.5s and 5s; further preferably between 3s and 5s; further preferably between 3s and 4s, so as to ensure the supply of sufficient aerosol during the inhalation stage.

[0118] As an example of starting the current energy supply according to the electrical parameters, the aerosol generating device heating the aerosol generating product 2 may include a preheating stage and a suction stage, wherein the preheating stage includes one or more time periods, and in the preheating stage, the electrical parameters of the conductive element 12 associated with the temperature may be used as the basis for the controller to start the energy supply to the heating component 1 in the current time period, but not as the basis for the controller to terminate the energy supply of the power source 3 to the heating component 1, nor as the basis for the controller to adjust the energy supply amount provided by the power source 3 to the heating component 1. In one or more time periods of the preheating stage, the controller controls the power source 3 to supply the heating component 1 with an amount of energy that meets the preset energy requirements of the corresponding time period.

[0119] The number of time periods in the puffing stage may be greater than or equal to the number of time periods in the preheating stage. The puffing stage may have 6-20 time periods. The cycle of the heating component 1 baking an aerosol generating product may have a total of 6-30 time periods, that is, the time periods in which the power source 3 supplies preset energy to the heating component 1 may have 6-30. The number of puffs that can be puffed of the aerosol generating product 2 adapted to the aerosol generating device may be less than or equal to the number of time periods in which the power source 3 supplies preset energy to the heating component 1. In one example, in the puffing stage of the aerosol generating device, each time period in which the power source 3 supplies energy to the heating component 1 can enable the aerosol generated by the aerosol generating product 2 to meet the user's one-puff puffing needs. Therefore, in at least two time periods, the preset energy supplied by the power source 3 to the heating component 1 may be the same or different; the duration of at least two time periods may be different or the same.

[0120] The preset energy supplied by the power source 3 to the heating component 1 in at least one time period in the preheating stage may be greater than the preset energy supplied by the power source 3 to the heating component 1 in any time period in the inhalation stage. For example, the ratio of the sum of the energy supplied by the power source 3 to the heating component 1 in the preheating stage to the sum of the energy supplied by the power source to the heating component 1 in the inhalation stage may be between 1:1 and 1:0.8. The total energy in the inhalation stage depends on the thermal insulation performance of the aerosol generating device. In the case of good thermal insulation performance, the total energy in the inhalation stage may be slightly less than the total energy in the preheating stage, or may be equal to the total energy in the preheating stage. In the case of poor thermal insulation performance, the heat loss in the inhalation stage is large, and more energy needs to be supplemented accordingly.

[0121] Since different heating methods lose different amounts of heat during the puffing phase, the total energy during the puffing phase also depends on the heating method used. For example, in an aerosol generating device heated by an external heater, the ratio of the total energy supplied by the power source 3 to the heating component 1 during the preheating phase to the total energy supplied by the power source 3 to the heating component 1 during the puffing phase may be between 1:1. In an aerosol generating device heated by an internal heater, the ratio of the total energy supplied by the power source 3 to the heating component 1 during the preheating phase to the total energy supplied by the power source 3 to the heating component 1 during the puffing phase may be between 3:5.

[0122] In the process of the power source 3 supplying energy to the heating component 1 in each time period, the power source 3 may supply energy to the heating component 1 in a pulsed manner, that is, intermittent energy supply, such as sawtooth wave energy supply. Thus, there may be a time interval between two adjacent energy pulses, so that the energy supplied by the power source 3 to the heating component 1 may not be continuous. Among them, at least two energy pulses may be equal in size, or at least two energy pulses may be unequal in size.

[0123] The energy, electric power and duration of an energy pulse also satisfy the energy formula. The preset energy supplied by the power source 3 to the heating component 1 in the current time period is equal to the sum of the energies of each energy pulse. Because there is a time interval between two adjacent energy pulses, the duration of the current time period is greater than the sum of the durations of each energy pulse.

[0124] In one example, by supplying energy in pulsed mode or intermittently, the controller can control and calculate the output of preset energy of the power source 3 to the heating component 1 in a time period by adjusting the time interval between two adjacent energy pulses, or adjusting the amplitude of the energy pulse, or adjusting the duration of a single energy pulse.

[0125] In the process of the power source 3 supplying energy to the heating component 1 in each time period, the power source 3 can supply energy to the heating component 1 in a continuous manner, such as a ripple energy supply. Therefore, the energy supplied by the power source 3 to the heating component 1 in each time period is continuous, and there is no interruption in the energy supply during this process. By continuously supplying energy, the controller can control and calculate the output of the preset energy of the power source 3 to the heating component 1 in a time period through the functional relationship satisfied by the energy wave.

[0126] As an example of starting the current energy supply according to the electrical parameters, the controller controls the processor 41 to collect and obtain the electrical parameters associated with the temperature of the conductive element 12 at a certain frequency or continuously, for example, the control detection circuit detects the electrical parameters associated with the temperature of the conductive element 12 during the cooling time, and when the electrical parameters meet the first condition, the controller determines that the previous time period ends, and controls the power source 3 to start the supply of the preset energy of the current time period to the heating component 1. That is, the electrical parameter meets the first condition as an instruction for the controller to start the power source 3 to supply the preset energy to the heating component 1 during the current time period. When the electrical parameter meets the first condition, the cooling time of the previous time period ends, and the energy supply time of the current time period can start.

[0127] If the detected electrical parameter associated with the temperature of the conductive element 12 does not reach the first condition, the conductive element 12 continues to cool naturally, the cooling time continues, the temperature of the heating component 1 or the temperature of the conductive element 12 continues to decrease, and the electrical parameter associated with the temperature of the conductive element 12 changes with the continued natural cooling until the first condition is reached. In other words, the electrical parameter associated with the temperature of the conductive element 12 reaches the first condition, that is, reaches the preset value, and the temperature of the conductive element represented by the first condition or the preset value is the lowest temperature of the conductive element 12 for natural cooling. When the electrical parameter associated with the temperature of the conductive element 12 reaches the first condition or the preset value, the controller can control the start-up power source 3 to supply energy to the heating component 1 for the next time period.

[0128] The first condition can prevent the conductive element 12 from being naturally cooled excessively, prevent the temperature of the heating component 1 or the aerosol generating product 2 from being too low during the preheating stage and / or the inhalation stage, and prevent the power source 3 from being unable to make the heating component 1 generate enough heat to heat the aerosol generating product 2 within a preset time in the next time period, or prevent the temperature of the heating component 1 from failing to reach a preset temperature range or the duration of the temperature of the heating component 1 within the preset temperature range after the power source 3 provides preset energy to the heating component 1 in the next time period. By setting the first condition or preset value of the electrical parameter associated with the temperature of the conductive element 12 as the basis for the controller to control the power source 3 to start the energy supply to the heating component 1 in the next time period, it can ensure that the aerosol generating product 2 generates aerosol as required in the next time period.

[0129] As an example, see Figure 6-Figure 8 , the conductive element 12 is connected in series with the sampling resistor 42, and the processor 41 is configured to obtain the resistance value of the conductive element 12. The electrical parameter of the conductive element 12 associated with temperature is the resistance value of the conductive element 12, and the first condition is a reference resistance value.

[0130] If the resistance temperature coefficient of the conductive element 12 is a positive temperature coefficient, the reference resistance value is less than the resistance value of the conductive element 12 when the power source 3 supplies energy to the heating component 1. After the power source 3 stops supplying energy to the heating component 1 in the current time period, as the heating component 1 cools naturally, the resistance value of the conductive element 12 gradually decreases. Therefore, when the resistance value of the conductive element 12 is less than or equal to the reference resistance value, the processor 41 controls the power source 3 to start supplying the preset energy to the heating component 1 in the next time period.

[0131] If the resistance temperature coefficient of the conductive element 12 is a negative temperature coefficient, the reference resistance value is greater than the resistance value of the conductive element 12 when the power source 3 supplies energy to the heating component 1. After the power source 3 stops supplying energy to the heating component 1 in the current time period, as the heating component 1 cools naturally, the resistance value of the conductive element 12 gradually increases. Therefore, when the resistance value of the conductive element 12 is greater than or equal to the reference resistance value, the controller controls the power source 3 to start supplying the preset energy to the heating component 1 in the next time period.

[0132] Based on the second embodiment of the fourth aspect, after controlling the power source 3 to start the energy supply of the heating component 1 in the current time period, the control method further includes:

[0133] Monitoring the supplied energy of the power source in the current time period;

[0134] If the supplied energy reaches the set energy corresponding to the current time period, the power source is controlled to stop supplying energy to the heating component in the current time period.

[0135] As an example, the power source 3 supplies energy to the heating component 1 with constant power in the current time period, and the controller monitors the duration of the power source 3 supplying energy to the heating component 1 in the current time period. When the duration reaches the preset energy supply time of the current time period, or when the remaining energy supply time in the current time period (the remaining energy supply time is the difference between the preset energy supply time of the current time period and the energy supply duration already provided) is reduced to zero, the power source 3 is controlled to stop supplying energy to the heating component 1 in the current time period.

[0136] As an example, the power source 3 supplies energy to the heating component 1 in a pulsed manner, and the controller monitors the number of pulses supplied by the power source 3 to the heating component 1 in the current time period. When the number of pulses reaches the preset number of pulses in the current time period, or when the number of remaining pulses in the current time period (the remaining number of pulses is the difference between the preset number of pulses in the current time period and the number of pulses already provided) is reduced to zero, the power source 3 is controlled to stop supplying energy to the heating component 1 in the current time period. Among them, different pulses can have the same energy, but this is not limited to this.

[0137] As an example, after stopping the preset energy supply to the heating component 1 in the current time period, the preset energy supply to the heating component 1 in the next time period can be started immediately. That is, there may be no cooling time in the time period, or there may be no cooling time between two adjacent time periods.

[0138] As an example, there is an energy supply time and a cooling time within a time period, or there is a cooling time between two adjacent time periods.

[0139] After the energy supply of the power source 3 to the heating component 1 reaches the preset energy of the current time period, the conductive element 12 enters the cooling time and starts natural cooling. The controller monitors and determines the duration of natural cooling, that is, determines the duration of the power source 3 stopping the energy supply of the current time period. If the duration meets the preset cooling time of the current time period, the current time period is controlled to end, or the next time period is controlled to enter and the power source 3 is started to supply the preset energy to the heating component 1. In this example, the end of the current time period or the start of the preset energy supply to the heating component 1 in the next time period may be independent of the electrical parameters of the conductive element 12 associated with the temperature.

[0140] Based on the third embodiment of the fourth aspect, in the process of controlling the power source 3 to supply current energy to the heating component 1, the processor 41 collects and obtains the electrical parameters associated with the temperature of the conductive element 12 at a certain frequency or continuously; when the electrical parameters meet the second condition, the controller controls the aerosol generating device to generate sensory prompt information or controls the power source 3 to stop the current energy supply to the heating component 1, or controls the aerosol generating device to shut down, etc., thereby limiting the heating of the heating component 1 to prevent the heating component 1 from being too hot or too cold.

[0141] That is, in the process of the power source 3 supplying energy to the heating component 1, the second condition is an abnormality judgment condition, and the controller determines whether an abnormality occurs in the heating component 1 or the aerosol generating device by identifying the electrical parameters of the conductive element 12 associated with the temperature. For example, whether an abnormal short circuit or open circuit occurs in the circuit. For example, the abnormality is that in the process of the power source 3 providing energy to the heating component 1, the heating component 1 cannot obtain enough power from the power source 1, so that the actual temperature of the conductive element 12 drops below the preset temperature, or remains below the preset temperature for a long time; for example, the abnormality is that in the process of the power source 3 providing energy to the heating component 1 or in the process of stopping providing energy to the heating component 1, the actual temperature of the conductive element 12 rises to above the safe temperature, or is out of the normal temperature fluctuation range of the heating component 1 or the conductive element 12. For example, the abnormality is that in the process of the power source 3 stopping providing energy to the heating component 1, the actual temperature of the conductive element 12 continues to rise.

[0142] For example: during the current energy supply from the power source 3 to the heating component 1, before the energy supplied from the power source 3 to the heating component 1 reaches the preset energy for the current time period, the temperature of the heating component 1 or the conductive element 12 exceeds the preset temperature fluctuation range and reaches the second condition, and the controller determines that an abnormality has occurred in the heating component 1 or the aerosol generating device. When an abnormality is found, the controller 1 can control the power source 3 to stop the current energy supply to the heating component 1 to ensure safety.

[0143] Under normal circumstances, before the energy supplied by the power source 3 to the heating component 1 reaches the preset energy of the current time period, the electrical parameters of the conductive element 12 associated with the temperature are within the normal range, and the second condition will not be met.

[0144] The second condition can be used to prevent the heating component 1 or the aerosol generating device from having an abnormality that causes it to malfunction or cause a safety accident.

[0145] As an example, during the current energy supply from the power source 3 to the heating component 1, the conductive element 12 may have a temperature rise phase and / or a temperature maintenance phase in which the temperature is maintained within a preset temperature fluctuation range until the energy supplied by the power source 3 to the heating component 1 reaches the preset energy for the current time period. In this process, the electrical parameter associated with the temperature of the conductive element 12 may change sensitively with the change of its temperature, or the electrical parameter may not change significantly or may change significantly between the first condition and the second condition, or the controller may obtain the electrical parameter in a timely or delayed manner. In either case, the controller can start the power source 3 for the next time period based on the first condition to provide the preset energy for the heating component 1, and start the heating restriction based on the second condition to ensure the safe and normal use of the aerosol generating device, and in each time period the energy provided by the power source 3 to the heating component 1 meets the preset energy of the time period. Therefore, between the first condition and the second condition, there is no need to terminate, reduce or increase the electric power or the time for providing electric power provided by the power source 3 to the heating component 1 according to the electrical parameters. Therefore, even if the controller obtains the electrical parameters with a lag or in a timely manner, it will not cause the heating temperature of the aerosol generating product 2 by the heating component 1 to be too high, resulting in the aerosol generating product 2 being burnt, or the heating temperature of the aerosol generating product 2 by the heating component 1 to be insufficient, resulting in a small amount of aerosol and a poor taste.

[0146] In other embodiments, the aerosol generating device may include a temperature sensor instead of the detection circuit. In this embodiment, the heating component is used to heat the aerosol generating product, and may include a conductive element, but the conductive element mainly plays a heat conduction or support role, or may not include a heat conduction element. The temperature sensor is connected to the heating component to detect the temperature of the heating component. The controller can control the power source to start the energy supply to the heating component in the current time period based on the result of the temperature sensor detecting the temperature, wherein the energy supply amount in the current time period meets the set energy. In other words, the result of the temperature sensor detecting the temperature is the basis for the controller to start the power source to supply the preset energy to the heating component, rather than the basis for adjusting the energy supply amount or electric power size of the power source to the heating component.

[0147] In the above-mentioned control method for an aerosol generating device and an aerosol generating device, the heating component includes a conductive element having a resistance temperature coefficient characteristic, the detection circuit detects the electrical parameters associated with the conductive element and the temperature, and the controller controls the power source to start the energy supply to the heating component in the current time period according to the acquired electrical parameters associated with the conductive element and the temperature, and the energy supply amount in the current time period is set in advance, and the energy supply amount in the current time period is independent of the acquired electrical parameters. Therefore, there is no need to add a more accurate and sensitive temperature sensor to meet the demand for generating aerosols by heating aerosol generating products, thereby reducing costs.

[0148] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application, but are not limited to the embodiments described in the specification. Furthermore, it is possible for a person of ordinary skill in the art to make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to the present application.

Claims

1. A control method for an aerosol generating device, characterized in that: The aerosol generating device comprises: Power source; a receiving chamber for receiving at least a portion of the aerosol generating article; a heating assembly including a conductive element having a temperature coefficient of resistance characteristic, the resistance value of the conductive element being configured to change based on a temperature change, and the heating assembly being disposed around the receiving cavity to heat the aerosol generating article; a detection circuit configured to detect an electrical parameter of the conductive element associated with temperature; and Controller; The control method comprises: detecting an electrical parameter of the conductive element associated with temperature; According to the electrical parameters, the power source is controlled to start supplying energy to the heating component in the current time period, wherein the energy supply amount in the current time period satisfies the set energy.

2. The control method according to claim 1, characterized in that: After the power source starts supplying energy in the current time period, the control method further includes: Monitoring the energy supplied by the power source in the current time period; If the supplied energy reaches the set energy corresponding to the current time period, the power source is controlled to stop supplying energy to the heating component in the current time period.

3. The control method according to claim 2, characterized in that: After the power source stops supplying energy to the heating component in the current time period, the control method further includes: The electrical parameter in the current time period is monitored, and when the electrical parameter reaches a preset value, the energy supply to the heating component for the next time period is controlled to be started; wherein the temperature of the conductive element represented by the preset value is the lowest temperature of the conductive element for natural cooling.

4. The control method according to claim 1, characterized in that: The power source has multiple time periods for supplying energy to the heating component. In at least two time periods, the preset energy supplied by the power source to the heating component is the same, or in at least two time periods, the preset energy supplied by the power source to the heating component is different.

5. The control method according to claim 1, characterized in that: The power source supplies the heating component with preset energy for 6-30 time periods.

6. The control method according to claim 1, characterized in that: The control method further comprises: The electrical parameter in a current time period is monitored, and heating restriction is initiated according to the electrical parameter.

7. The control method according to claim 1, characterized in that: The conductive element is configured to generate heat; or The electrically conductive element is configured to be thermally conductive.

8. The control method according to claim 1, characterized in that: The conductive element comprises stainless steel.

9. The control method according to claim 1, characterized in that: The heating assembly further comprises a heating element supported by the conductive element, wherein the thermally conductive element is configured to absorb at least part of the heat released by the heating element to increase the temperature; The heating element is connected to the power source to form a loop; or The heating element is configured to generate heat in a changing magnetic field.

10. The control method according to claim 1, characterized in that: The conductive element is connected to the power source to form a loop; the detection circuit includes a processor having a first acquisition terminal and a second acquisition terminal, and the first acquisition terminal and the second acquisition terminal are respectively connected to different positions on the conductive element; The processor is configured to acquire the electrical parameter based on at least a first parameter collected by the first collection end and a second parameter collected by the second collection end.

11. The control method according to claim 10, characterized in that: A first resistor is connected between the first collecting terminal and the conductive element, and a second resistor is connected between the second collecting terminal and the conductive element; The resistance values ​​of the first resistor and the second resistor are both greater than or equal to 1000Ω.

12. The control method according to claim 10, characterized in that: The detection circuit further comprises a sampling resistor, which is arranged in a loop between the conductive element and the power source; The processor is also provided with a third acquisition terminal, and the third acquisition terminal is connected to one side of the sampling resistor; The processor is configured to also acquire the electrical parameter based on a third parameter acquired by the third acquisition terminal.

13. The control method according to claim 12, characterized in that: The sampling resistor is arranged between the anode output terminal of the power source and the anode connection terminal of the conductive element, and the third collection terminal is connected between the sampling resistor and the anode output terminal.

14. The control method according to claim 10, characterized in that: The electrical parameter includes at least a partial voltage, resistance, resistivity of the conductive element, or a current flowing through the conductive element.

15. An aerosol generating device, characterized in that: include: Power source; a receiving chamber for receiving at least a portion of the aerosol generating article; a heating assembly including a conductive element having a temperature coefficient of resistance characteristic, the resistance value of the conductive element being configured to change based on a temperature change, and the heating assembly being disposed around the receiving cavity to heat the aerosol generating article; A detection circuit configured to detect an electrical parameter of the conductive element associated with temperature; and The controller is configured to obtain the electrical parameters and control the power source to start supplying energy to the heating component in a current time period according to the electrical parameters, wherein the energy supply in the current time period meets the set energy.

16. An aerosol generating device, characterized in that: include: Power source; a receiving chamber for receiving at least a portion of the aerosol generating article; a heating assembly comprising a conductive element comprising stainless steel, the conductive element having a resistance value configured to change based on a temperature change, the conductive element being connected to the power source to form a loop, and the conductive element being configured to heat the aerosol generating article; and A detection circuit, comprising a processor having a first acquisition terminal and a second acquisition terminal, wherein the first acquisition terminal and the second acquisition terminal are respectively connected to different positions on the conductive element, and the processor is configured to obtain an electrical parameter of the conductive element associated with temperature based on at least a first parameter acquired by the first acquisition terminal and a second parameter acquired by the second acquisition terminal; The controller is configured to obtain the electrical parameters and control the power source to start supplying energy to the heating component in a current time period according to the electrical parameters, wherein the energy supply in the current time period meets the set energy.

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