Aerosol-generating device and control method therefor

Abstract

Disclosed in the present application are an aerosol-generating device and a control method therefor. The aerosol-generating device comprises a cell; a heater, the heater comprising a first heating portion and a second heating portion; a temperature measurement unit; and a circuit, which is configured to control within a current time period, on the basis of a real-time temperature of the first heating portion, the cell to provide heating energy to the first heating portion, and control within the current time period, on the basis of the total heating energy provided by the cell to the first heating portion within a previous time period, the cell to provide heating energy to the second heating portion. In the aerosol-generating device and the control method therefor, the heating energy of the first heating portion is controlled on the basis of the real-time temperature measured by the temperature measurement unit, thereby realizing temperature control of the first heating portion, and the heating energy of the second heating portion is controlled by following that of the first heating portion, so that in case of no temperature sensing in the second heating portion, it is ensured that the second heating portion is heated by following the first heating portion, thereby realizing temperature control of the second heating portion.

Description

Aerosol-generating device and control method thereof

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application No. 202410903000.6 filed on July 5, 2024, and entitled “Aerosol-generating device and control method thereof”, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] Embodiments of the present application relate to the field of aerosol-generating technology, and relate to an aerosol-generating device and a control method thereof. BACKGROUND

[0004] An aerosol-generating device heats an aerosol-generating article by using a heater to generate an aerosol for a user to smoke. Generally, a user often expects the aerosol-generating device to generate an aerosol as quickly as possible after starting to reduce the time waiting for the aerosol to be generated. In order to enable the aerosol-generating device to quickly generate an aerosol and have a satisfactory consumption experience, some solutions have designed improvements to the heater or the control method.

[0005] In some solutions known to the inventors, the aerosol-generating device generally uses multiple heaters, aiming to control some of the heaters to reach a temperature for generating an aerosol first to sufficiently preheat and roast some of the aerosol-generating articles to generate an aerosol, and then control another part of the heaters to reach a temperature for generating an aerosol to preheat and roast another part of the aerosol-generating articles to generate an aerosol. The above-mentioned method generally requires multiple corresponding temperature detection units to be implemented, which is relatively high in cost.

[0006] SUMMARY

[0007] In view of this, the present application provides an aerosol-generating device and a control method thereof to control the temperature of multiple heaters.

[0008] In a first aspect, an embodiment of the present application provides an aerosol-generating device, comprising: an electric core configured to provide electric power; a heater configured to heat an aerosol-generating article to generate an aerosol; the heater comprising a first heating portion and a second heating portion; a temperature detection unit; and a circuit configured to control the electric core to provide heating energy to the first heating portion in a current time period based on a real-time temperature of the first heating portion detected by the temperature detection unit, and control the electric core to provide heating energy to the second heating portion in the current time period based on a total heating energy provided by the electric core to the first heating portion in a previous time period.

[0009] In an example, the device further comprises a chamber removably receiving the aerosol generating article; the first heating portion and the second heating portion are arranged in sequence along an axial direction of the chamber.

[0010] In an example, the circuitry is configured to control the power supply to provide heating energy to the first heating portion in the current time period based on a real-time temperature of the first heating portion and a target temperature, so that the real-time temperature of the first heating portion approaches the target temperature.

[0011] In an example, the circuitry is configured to, when the power supply provides heating energy to the first heating portion, control the power supply to continue providing heating energy to the first heating portion if the real-time temperature of the first heating portion is less than the target temperature, and control the power supply to stop providing heating energy to the first heating portion if the real-time temperature of the first heating portion is greater than or equal to the target temperature.

[0012] In an example, the circuitry is configured to control the power supply to provide, in the current time period, a total heating energy to the second heating portion that is a product of a total heating energy provided by the power supply to the first heating portion in a previous time period and a preset proportionality coefficient corresponding to the current time period.

[0013] In an example, the circuitry is configured to, when the power supply provides heating energy to the second heating portion, determine a cumulative energy provided by the power supply to the second heating portion, control the power supply to stop providing heating energy to the second heating portion if the cumulative energy is greater than or equal to a product of a total heating energy provided by the power supply to the first heating portion in a previous time period and a preset proportionality coefficient corresponding to the current time period, and control the power supply to continue providing heating energy to the second heating portion if the cumulative energy is less than the product of the total heating energy provided by the power supply to the first heating portion in the previous time period and the preset proportionality coefficient corresponding to the current time period.

[0014] In an example, the current time period comprises a plurality of energy supply periods, and the circuitry is configured to control the power supply to provide, in each energy supply period, a constant heating energy to the second heating portion.

[0015] In an example, the preset proportionality coefficients corresponding to different time periods are different, or the preset proportionality coefficients corresponding to at least two time periods are the same.

[0016] In an example, the circuitry is configured to determine, at an end time point of the current time period, a total heating energy provided by the power supply to the first heating portion in the current time period.

[0017] In an example, the current time period comprises a plurality of energy supply periods; the circuit is configured to control the battery to supply heating energy to the first heating portion and the second heating portion simultaneously or alternately in the energy supply periods.

[0018] In a second aspect, the embodiments of the present application further provide a control method of an aerosol generating device, the aerosol generating device comprising: a battery configured to supply electric power; a heater configured to heat an aerosol generating article to generate an aerosol, the heater comprising a first heating portion and a second heating portion; and a temperature detection unit; the control method comprising: controlling the battery to supply heating energy to the first heating portion in a current time period based on a real-time temperature of the first heating portion detected by the temperature detection unit; and controlling the battery to supply heating energy to the second heating portion in the current time period based on a total heating energy supplied by the battery to the first heating portion in a previous time period.

[0019] In a third aspect, the embodiments of the present application further provide a control method of an aerosol generating device, the control method comprising: controlling a battery to supply heating energy to a first heating portion in a current time period based on a real-time temperature of the first heating portion; and controlling the battery to supply heating energy to a second heating portion in the current time period based on a total heating energy supplied by the battery to the first heating portion in a previous time period.

[0020] The aerosol generating device and the control method thereof provided by the embodiments of the present application, the heating energy of the first heating portion is controlled based on the real-time temperature detected by the temperature detection unit, so as to realize temperature control of the first heating portion; and the heating energy of the second heating portion is controlled following the first heating portion, so as to ensure that the second heating portion is heated following the first heating portion in the case that the second heating portion has no temperature sensing, and realize temperature control of the second heating portion. BRIEF DESCRIPTION OF DRAWINGS

[0021] One or more embodiments are illustrated by way of example in the figures that form a part of this patent document, these example are not intended to limit the embodiments, elements having the same reference numbers in different figures represent the same or similar elements, unless otherwise indicated, the figures in the drawings are not to scale.

[0022] FIG. 1 is a schematic diagram of an aerosol generating device according to an embodiment of the present application;

[0023] FIG. 2 is a structural schematic diagram of a heater according to an embodiment of the present application;

[0024] Fig. 3 is an exploded schematic view of the heater of Fig. 2 before assembly of the various parts;

[0025] Fig. 4 is a schematic view of the heating element of Fig. 3 after being unrolled circumferentially;

[0026] Fig. 5 is a schematic view of directing current through the heating element in one embodiment;

[0027] Fig. 6 is a schematic view of directing current through the heating element in another embodiment;

[0028] Fig. 7 is a schematic view of directing current through the heating element in another embodiment;

[0029] Fig. 8 is a schematic view of directing current through the heating element in another embodiment;

[0030] Fig. 9 is a flowchart of a control method in some embodiments of the present application;

[0031] Fig. 10 is a schematic view of temperature variation of the first heating portion and the second heating portion during operation in some embodiments of the present application;

[0032] Fig. 11 is a schematic view of supplying heating energy to the first heating portion and the second heating portion in some embodiments of the present application;

[0033] Fig. 12 is a flowchart of another control method in some embodiments of the present application. DETAILED DESCRIPTION

[0034] The present application will be described in detail below 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 those skilled in the art can make several modifications and improvements without departing from the concept of the present application. These are all within the scope of protection of the present application.

[0035] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0036] It should be noted that the various features in the embodiments of the present application can be combined with each other without conflict, and are all within the scope of protection of the present application. In addition, although the functional modules are divided in the device schematic diagram, and the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order from the module division in the device or the order in the flowchart. In addition, the words "first", "second", "third" and the like used herein do not limit the data and execution order, but only distinguish the same items or similar items with basically the same function and effect.

[0037] Unless otherwise defined, all technical and scientific terms used in the present disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. All publications, patent applications, patents, and other references mentioned in this specification are incorporated by reference. In case of a conflict in terminology, the present specification controls. In this specification, the use of "or" means "and / or" unless stated otherwise. Although methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present application, exemplary

[0038] Furthermore, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0039] One embodiment of the present application proposes an aerosol-generating device 100 for heating, but not burning, an aerosol-generating article 1000, such as a cigarette, to volatilize or release at least one component of the aerosol-generating article 1000 to form an aerosol for smoking, as shown in FIG. 1.

[0040] In an alternative embodiment, the aerosol-generating article 1000 preferably employs a tobacco-containing material that releases volatile compounds from a substrate upon heating; or it can also be a non-tobacco material that is suitable for electrically heated smoking after being heated. The aerosol-generating article 1000 preferably employs a solid substrate, which can include one or more of a powder, granules, shreds, strips, or sheets of one or more of vanilla leaves, dried flowers, volatile flavoring herbs, tobacco leaves, homogenized tobacco, or expanded tobacco; or the solid substrate can contain additional tobacco or non-tobacco volatile flavoring compounds to be released upon heating of the substrate.

[0041] As shown in FIG. 1, after the aerosol-generating article 1000 is received in the aerosol-generating device 100, a portion of the aerosol-generating article 1000, such as a filter, is exposed outside the aerosol-generating device 100, which is advantageous for a user to smoke.

[0042] The configuration of the aerosol-generating device 100 according to one embodiment of the present application can be seen in FIG. 1, in which the overall shape of the device is generally configured as a flat cylinder. The external components of the aerosol-generating device 100 include:

[0043] A housing 10, which substantially defines the outer surface of the aerosol-generating device, has a hollow configuration inside to form an assembly space for necessary functional components, such as electronic and heating components. The housing 10 has a proximal end 110 and a distal end 120 opposite to each other in the longitudinal direction; in use, the proximal end 110 is closer to the user to facilitate the operation of receiving and heating and smoking the aerosol-generating article 1000, and the distal end 120 is away from the user.

[0044] In which,

[0045] The proximal end 110 is provided with a receiving opening 111 through which the aerosol generating article 1000 can be received into the housing 10 for heating or removed from the housing 10;

[0046] The distal end 120 is provided with an air inlet hole 121 for allowing external air to enter into the housing 10 during puffing.

[0047] In some examples, the housing 10 can be formed of a metal or an alloy such as stainless steel, aluminum, or the like. Other suitable materials include various plastics (e.g., polycarbonate), metal-plating over plastic, ceramic, and the like.

[0048] According to Fig. 1, the aerosol generating device 100 further comprises:

[0049] A chamber 200 for accommodating or receiving the aerosol generating article 1000; in use, the aerosol generating article 1000 can be removably received into the chamber 200 through the receiving opening 111.

[0050] And according to Fig. 1, the aerosol generating device 100 further comprises:

[0051] An air passage 150 located between the chamber 200 and the air inlet hole 121; in use, the air passage 150 thus provides a passage path for the external air to enter the chamber 200 / aerosol generating article 1000 through the air inlet hole 121, as indicated by arrow R11 in Fig. 1.

[0052] According to Fig. 1, the aerosol generating device 100 further comprises:

[0053] An electric core 130 for power supply; preferably, the electric core 130 is a rechargeable direct current electric core 130 and can be charged by connecting to an external power source;

[0054] A circuit 140 arranged or integrated with various components for controlling the heating or operation of the aerosol generating device 100.

[0055] According to Fig. 1, the aerosol generating device 100 further comprises:

[0056] A heater 30 at least partially surrounding and defining the chamber 200, the heater 30 at least partially surrounds or encloses the aerosol generating article 1000 and heats from the outer periphery of the aerosol generating article 1000 when the aerosol generating article 1000 is received into the housing 10, and the aerosol generating article 1000 is at least partially accommodated and retained in the heater 30 when received into the housing 10.

[0057] Referring to Figs. 2 and 3, the heater 30 is configured in a substantially longitudinal tubular shape and comprises:

[0058] A tubular base 31 is arranged around the chamber 200; and in implementations, the tubular hollow 330 of the base 31 surrounds and defines the chamber 200 for receiving the aerosol generating article 1000. The base 31 is made of a material having good thermal conductivity, such as ceramic, glass, surface-insulated metal or alloy, such as anodized aluminum material, aluminum alloy, copper alloy, stainless steel, etc.; in use, the base 31 at least partially defines a space for accommodating and holding the aerosol generating article 1000. In some implementations, the base 31 has a thermal conductivity of at least 10 W / m.k, preferably or at least 100 W / m.k; or in some implementations, the base 31 has a thermal conductivity of greater than 200 W / m.k or higher. In some implementations, the base 31 comprises a metal suitable for the above high thermal conductivity, such as aluminum, copper, titanium, or an alloy containing at least one of them, etc.

[0059] In some specific implementations, the base 31 has a wall thickness of about 0.05-1 mm; and the base 31 has an inner diameter of about 5.0-8.0 mm; and the base 31 has a length of about 30-60 mm. In implementations, the length of the aerosol generating article 1000 surrounded or enclosed by the base 31 is greater than 30 mm; or the length of the aerosol generating article 1000 heated by the base 31 is greater than 30 mm.

[0060] Referring to Figs. 2 and 3, the heater 30 further comprises:

[0061] A heating element 32 at least partially surrounds or encloses the base 31; in use, the base 31 is heated by receiving or transferring heat from the heating element 32 to in turn heat the aerosol generating article 1000.

[0062] In some implementations, the heating element 32 comprises an electrically resistive heating element; and the heating element 32 is capable of generating electric resistance Joule heat to heat up when a direct current flows through the heating element 32. In some implementations, the heating element 32 is made of a metal material, a metal alloy, graphite, carbon, an electrically conductive ceramic, or a composite material of other ceramic materials and metal materials having appropriate impedance. Among them, the appropriate metal or alloy material includes at least one of nickel, cobalt, zirconium, titanium, nickel alloy, cobalt alloy, zirconium alloy, titanium alloy, nickel-chromium alloy, nickel-iron alloy, iron-chromium alloy, iron-chromium-aluminum alloy, iron-manganese-aluminum-based alloy, or stainless steel, etc. Or in yet some other implementations, the heating element 32 can also comprise an electromagnetic induction heating element or an infrared heating element, etc.

[0063] Or in yet some other variant implementations, the heater 30 can only comprise the heating element 32, which surrounds or defines the chamber 200 for accommodating the aerosol generating article 1000 and directly transfers heat to the aerosol generating article 1000 for heating.

[0064] Further referring to FIG. 2 and FIG. 3, the heating element 32 is configured to be in a cylindrical shape surrounding or encircling the base 31. Also, the heating element 32 has an extension in the longitudinal direction of the heater 30 that is less than that of the base 31; for example, in some embodiments, the heating element 32 has a length greater than 20-50 mm. For example, specifically, the heater 30 includes an end 310 and an end 320 facing away from each other in the longitudinal direction, according to FIG. 2 and FIG. 3; and in some embodiments, the end 310 and the end 320 are defined by the two ends of the base 31 in the longitudinal direction. The first end of the heating element 32 has a spacing dl from the end 310, which is about 3-10 mm; and the second end of the heating element 32 has a spacing d2 from the end 320, which is about 3-10 mm.

[0065] After assembly, the heating element 32 does not completely wrap or encircle the outer surface of the base 31, so that the outer surface of the base 31 has a first exposed area 311 defined by the spacing dl near the end 310. Also, the outer surface of the base 31 has a second exposed area 312 defined by the spacing d2 near the end 320. In assembly, the aerosol-generating device 100 provides support to the heater 30 through the clamping, supporting or fixing components in combination with the first exposed area defined by the spacing dl and the second exposed area defined by the spacing d2.

[0066] In some embodiments, the heating element 32 is insulated from the base 31. In some conventional embodiments, the outer surface of the base 31 can form a surface insulation layer by surface anodization, spraying, deposition, etc. The surface insulation layer can include at least one of an oxide, a glaze, a ceramic, an organic polymer, etc. Or in yet some embodiments, the heating element 32 is insulated from the base 31 by providing a thin film of an insulating organic polymer therebetween; for example, the thin film of an organic polymer is, for example, a polyimide film, a polytetrafluoroethylene film, etc.

[0067] Referring to FIG. 2 to FIG. 4, the heating element 32 is an electrically resistive heating mesh. In this embodiment, the heating element 32 is a heating element wound by a sheet or mesh substrate. The wound heating element 32 is a tube that is not closed in the circumferential direction, but has a cylindrical shape with a side opening 335 in the longitudinal direction. Also, the side opening 335 extends from the first end to the second end of the heating element 32 in the longitudinal direction. Also, in some embodiments, the side opening 335 has a width of about 2-6 mm.

[0068] In some embodiments, the surface of the substrate 31 is insulated; the heating element 32 is a resistive heating track or film or coating formed on the substrate 31 by printing, spraying, deposition, etc. For example, the heating element 32 is a resistive heating track meandering circumferentially; or, the heating element 32 is a patterned resistive heating track.

[0069] In some other embodiments, the heating element 32 is an infrared-emitting coating formed on the substrate 31 by printing, spraying, deposition, etc.; the heating element 32 is an electrochromic infrared-emitting coating that emits infrared rays into the chamber 200 to heat the aerosol generating article 1000 when an electric current flows through the infrared-emitting coating. The infrared-emitting coating for radiating infrared rays can include oxides of at least one or more metal elements such as Mg, Al, Ti, Zr, Mn, Fe, Co, Ni, Cu, Cr, Zn, etc. that radiate far-infrared rays having a heating effect when heated to an appropriate temperature by electrochromism.

[0070] According to FIGS. 2 to 4, the heating element 32 includes:

[0071] a first heating portion 321 and a second heating portion 322 arranged in an axial or longitudinal direction; the first heating portion 321 is closer to the proximal end 110 and / or the end portion 310, and the second heating portion 322 is closer to the distal end 120 and / or the end portion 320;

[0072] a spacing d3 is defined between the first heating portion 321 and the second heating portion 322; the first heating portion 321 and the second heating portion 322 are discontinuously arranged by the spacing d3. Also, the first heating portion 321 and the second heating portion 322 are separated by the spacing d3, so that they are spaced apart in the longitudinal direction. In some embodiments, the spacing d3 has a length of about 3 to 10 mm. Further, a third exposed area 313 of the surface of the substrate 31 is defined by the spacing d3 after assembly.

[0073] Figure 4 shows a schematic view of the heating element 32 after being unwound along the circumferential direction; in this embodiment, the first heating portion 321 and the second heating portion 322 of the heating element 32 after being unwound are in the shape of a mesh. Also, the length of the heating element 32 after being unwound is greater than the width; for example, in Figure 4, the length of the heating element 32 after being unwound is approximately 32.8 mm, and the width is approximately 18.7 mm. Also, the ratio of the length to the width of the heating element 32 is at least 1.5 or greater, which is advantageous for reducing the resistance and increasing the power under the same area. Also, in some embodiments, by making the ratio of the length to the circumferential extension or the circumference of the heating element 32 at least 1.5 or greater, it is advantageous to further reduce the resistance of the heating element 32 to below 0.6 Ω or lower by guiding the current along the circumferential direction of the heating element 32; or in yet other embodiments, it is advantageous to further reduce the resistance of the heating element 32 to below 0.3 Ω or lower by guiding the current along the circumferential direction of the heating element 32, so that the overall resistance of the heating element 32 is controlled to be between 0.2 and 0.6 Ω.

[0074] Further according to Figure 4, in the unwound heating element 32, the first heating portion 321 is proximate to or defines the first end, and the second heating portion 322 is proximate to or defines the second end. Also, in some embodiments, the extension length of the first heating portion 321 is substantially equal to the extension length of the second heating portion 322; or, the first heating portion 321 and the second heating portion 322 have substantially the same extension length; for example, in a specific embodiment, the first heating portion 321 and / or the second heating portion 322 has a length of approximately 15 mm. Or, in yet other variant embodiments, the extension length of the first heating portion 321 is greater than the extension length of the second heating portion 322; or, the second heating portion 322 is longer than the first heating portion 321.

[0075] In use, by arranging the electrodes at intervals along the circumferential direction, the current is guided along the circumferential direction of the first heating portion 321 and the second heating portion 322 of the heating element 32. The unwound heating element 32 includes a first side 3210 and a second side 3220 facing away from each other along the width direction. The heater 30 further includes:

[0076] a first electrode 331, for example an elongated conductive lead, extending from the first end to the second end of the heating element 32 outside; and the first electrode 331 is simultaneously combined and conductive with the first heating portion 321 and the second heating portion 322 at the first side 3210;

[0077] a second electrode 332, for example an elongated conductive lead, combined and conductive with the first heating portion 321 at the second side 3220;

[0078] A third electrode 333, such as an elongated conductive lead, is coupled to and electrically conducts with the second heating portion 322 at the second side 3220.

[0079] After being arranged on the base 31, the first side 3210 and the second side 3220 define a side opening 335; or, in the circumferential direction, the side opening 335 is located between the first side 3210 and the second side 3220.

[0080] The material of the first electrode 331 and / or the second electrode 332 and / or the third electrode 333 is made of a relatively low-resistivity, excellent conductor metal, such as gold, silver, copper, or an alloy containing them. In use, the first electrode 331 and / or the second electrode 332 and / or the third electrode 333 can guide the electric current in the circumferential direction of the first heating portion 321 and the second heating portion 322. In addition, the first electrode 331 and / or the second electrode 332 and / or the third electrode 333 is firmly coupled to the heating element 32 by welding or the like and forms an electrically conductive.

[0081] In addition, the heating element 32 is arranged with holes, which are basically in a matrix or array or regular arrangement, so that the heating element 32 has a mesh shape. In the embodiment shown in FIG. 4, the holes are rectangular in shape; and the size of the holes in the length direction of the heating element 32 is greater than the size in the circumferential or width direction. Alternatively, the holes extend in the length direction of the heating element 32.

[0082] Alternatively, in some further embodiments, the heating element 32 also has more heating portions, such as a third heating portion arranged in sequence along the longitudinal direction and spaced apart from the second heating portion 322; or it can also include a fourth heating portion, a fifth heating portion, and so on.

[0083] Correspondingly, the heater 30 can also include more electrodes. In addition, some of them can serve as common electrodes for multiple heating portions. For example, in some specific embodiments, the heater 30 can include:

[0084] The first heating portion 321, the second heating portion 322, and the third heating portion;

[0085] The first electrode 331 is arranged at the first side 3210, extends from the first heating portion 321 to the second heating portion 322, and electrically conducts with the first heating portion 321 and the second heating portion 322 at the same time;

[0086] The second electrode 332 is arranged at the second side 3220, and only coupled to the first heating portion 321 to form an electrically conductive;

[0087] The third electrode 333 is arranged on the second side 3220 and extends from the second heating portion 321 to the third heating portion, and is electrically conductive with the second heating portion 322 and the third heating portion at the same time;

[0088] The fourth electrode is arranged on the first side 3210 and is electrically conductive only on the third heating portion.

[0089] In implementation, the first heating portion 321, the second heating portion 322 and the third heating portion can be selectively heated individually, in parallel or in series, or in parallel or in series or in mixed connection, by adjusting the connection mode of the above electrodes and circuits.

[0090] Specifically, the holes on the heating element 32 include:

[0091] The holes 3211 are arranged on the first heating portion 321;

[0092] The holes 3221 are arranged on the second heating portion 322.

[0093] In some embodiments, the holes 3211 on the first heating portion 321 and / or the holes 3221 on the second heating portion 322 are formed by laser cutting or etching on the sheet-shaped base material before winding to form the heating element 32. The holes 3211 on the first heating portion 321 are arranged in an array, so that the first heating portion 321 has a grid shape; and the holes 3221 on the second heating portion 322 are arranged in an array, so that the second heating portion 322 has a grid shape.

[0094] In the embodiments of FIGS. 2 and 4, the holes 3211 and / or the holes 3221 are rectangular holes. Alternatively, in some other embodiments, the holes 3211 and / or the holes 3221 can also be circular, triangular or polygonal in shape.

[0095] In some embodiments, the area of the holes 3211 on the first heating portion 321 is smaller than the area of the holes 3221 on the second heating portion 322. Alternatively, the length of the holes 3211 on the first heating portion 321 is smaller than the length of the holes 3221 on the second heating portion 322; or the width of the holes 3211 on the first heating portion 321 is smaller than the width of the holes 3221 on the second heating portion 322. For example, in some embodiments, the holes 3211 have a length of about 3-7 mm and a width of about 0.2-0.8 mm; and the holes 3221 have a length of about 4-8 mm and a width of about 0.7-1.2 mm.

[0096] Or in yet some other embodiments, the holes 3211 and / or the holes 3221 can also be arranged to have an extension dimension along the circumferential direction of the heating element 32 that is greater than an extension dimension along the longitudinal direction of the heating element 32; i.e. the holes 3211 and / or the holes 3221 have a shape that is longer in the circumferential direction.

[0097] In the embodiment shown in Fig. 4, the distance d31 between adjacent holes 3211 in the first heating portion 321 is about 0.5 mm in the width direction; and the distance d32 between adjacent holes 3211 is about 0.5 mm in the length direction. And in the embodiment shown in Fig. 4, the distance d33 between adjacent holes 3221 in the second heating portion 322 is about 0.2 mm in the width direction; and the distance d34 between adjacent holes 3221 is about 0.2 mm in the length direction.

[0098] According to Fig. 4, the heating element 32 further comprises:

[0099] The connecting portion 324 is arranged at the first side 3210; the connecting portion 324 extends from the first heating portion 321 to the second heating portion 322 for electrically connecting the first heating portion 321 and the second heating portion 322. The distance d33 is closed at the first side 3210 and open at the second side 3220 by the connecting portion 324.

[0100] In some embodiments, the heating element 32 including the first heating portion 321, the connecting portion 324 and the second heating portion 322 is integrally formed or prepared. For example, the first heating portion 321, the connecting portion 324 and the second heating portion 322 are integrally obtained by etching, cutting or the like to remove the excess part of a sheet-like substrate precursor.

[0101] In embodiments, the first electrodes 331 are in electrical connection with the connecting portion 324; thus it is advantageous to improve the stability of the electrical connection between the first electrodes 331 and the first heating portion 321 and the second heating portion 322.

[0102] In the embodiment shown in Fig. 4, the width of the first heating portion 321 can be greater than the width of the second heating portion 322; thus when the first heating portion 321 and the second heating portion 322 are flush at the first side 3210, the first heating portion 321 slightly protrudes relative to the second heating portion 322 at the second side 3220. Then after welding the second electrode 332 and the third electrode 333, the elongated second electrode 332 and the third electrode 333 / second heating portion 322 are staggered in the longitudinal direction of the heating element 32, which is advantageous for preventing short circuit therebetween.

[0103] Or in yet another embodiment, the width of the first heating portion 321 can be equal to the width of the second heating portion 322; then after welding the elongated second electrode 332 and the third electrode 333, respectively, by sleeving an insulating tube or spraying a surface insulating layer on the second electrode 332 and the third electrode 333 to provide insulation to prevent them from contacting and forming a short circuit in assembly.

[0104] In use, by selectively connecting any two or three of the first electrode 331, the second electrode 332 and the third electrode 333 to the circuit 140, the current can be selectively guided on the first heating portion 321 and / or the second heating portion 322 of the heating element 32. Specifically, for example, the first electrode 331, the second electrode 332 and the third electrode 333 are selectively connected to the circuit 140 by a switch tube, for example, a MOS tube, which can be switched between a conduction state and a disconnection state, so that the heating zone of the heating element 32 on the aerosol generating article 1000 can be changed.

[0105] By selectively connecting the first electrode 331, the second electrode 332 and the third electrode 333 to the circuit 140 in different electrical connection modes, the first heating portion 321 and the second heating portion 322 can be selectively heated individually or simultaneously in series or parallel.

[0106] Specifically, for example, one of the first heating portion 321 or the second heating portion 322 can be individually activated for heating, and the other one is not activated for not heating, so as to individually heat a partial section of the aerosol generating article 1000; for another example, the first heating portion 321 or the second heating portion 322 is connected to the circuit 140 in different series or parallel modes, so that the first heating portion 321 or the second heating portion 322 can simultaneously heat different sections of the aerosol generating article 1000 with different powers, respectively, so that the section of the aerosol generating article 1000 surrounded by the first heating portion 321 or the second heating portion 322 forms different temperatures and different aerosol generating efficiencies.

[0107] Specifically, for example, FIG. 5 shows a schematic diagram of an embodiment in which the first electrode 331 and the second electrode 332 are connected to the circuit 140, respectively, and then connected to the positive electrode and the negative electrode of the battery 130 to form a loop to guide the current i11 on the first heating portion 321. According to the connection mode shown in FIG. 5, only the circumferential working current is formed on the first heating portion 321, and no current is formed on the second heating portion 322.

[0108] According to Fig. 5, when the current is led through the first electrode 331 and the second electrode 332 on the first heating portion 321, several electrically resistive conductor paths are formed on the first heating portion 321, which extend circumferentially from the first electrode 331 to the second electrode 332; these several electrically resistive conductor paths extend substantially in a meandering manner; and these several electrically resistive conductor paths are formed by the several holes 3211.

[0109] Specifically, for example, Fig. 6 shows a schematic diagram of leading the current i21 through the first electrode 331 and the third electrode 333 in another embodiment, in which the first electrode 331 and the third electrode 333 are connected to the positive electrode and the negative electrode of the battery cell 130 respectively to form a loop. According to Fig. 6, in the connection mode of forming a closed loop in the manner of Fig. 6, only the circumferential working current is formed on the second heating portion 322, and no current is formed on the first heating portion 321. According to Fig. 6, when the current is led through the first electrode 331 and the third electrode 333 on the second heating portion 322, several electrically resistive conductor paths are formed on the second heating portion 322, which extend circumferentially from the first electrode 331 to the third electrode 333; these several electrically resistive conductor paths extend substantially in a meandering manner; and these several electrically resistive conductor paths are formed by the several holes 3221.

[0110] In the embodiments of Fig. 5 and Fig. 6, the path width of the current i11 is greater than the path width of the current i21. Thus, when the current is led circumferentially on the first heating portion 321 and the second heating portion 322 in the manner of Fig. 5 or Fig. 6, the resistance value of the first heating portion 321 is smaller than the resistance value of the second heating portion 322.

[0111] Fig. 7 shows a schematic diagram of leading the current through the first heating portion 321 and the second heating portion 322 in parallel in another embodiment; in Fig. 7, the first electrode 331 is connected to the circuit 140 and thus to the positive electrode of the battery cell 130, and the second electrode 332 and the third electrode 333 are connected to the circuit 140 and thus to the negative electrode of the battery cell 130. Then, the circumferential current i12 on the first heating portion 321 and the circumferential current i22 on the second heating portion 322 can be formed simultaneously, so that the first heating portion 321 and the second heating portion 322 are heated simultaneously. At this time, the voltage across the parallel first heating portion 321 and the second heating portion 322 is the same; thus, according to the formula P=U2 / R of the relationship between power, voltage and resistance, the resistance of the first heating portion 321 is relatively smaller, so that the first heating portion 321 has a greater heating power than the second heating portion 322.

[0112] Figure 8 shows a schematic diagram of another embodiment in which the first heating portion 321 and the second heating portion 322 are simultaneously connected in series to direct the current. In Figure 8, the second electrode 332 is connected to the circuit 140 to be in contact with the positive electrode of the battery cell 130, and the third electrode 333 is connected to the circuit 140 to be in contact with the negative electrode of the battery cell 130; and in this embodiment, the first electrode 331 is not connected to the circuit, thereby forming the series connection of the first heating portion 321 and the second heating portion 322 in Figure 8. In Figure 8, the total current i13 on the first heating portion 321 and the total current i23 on the second heating portion 322 are the same. From the power-current-resistance relationship formula P = I 2 × R, it can be known that when the resistance of the first heating portion 321 is less than the resistance of the second heating portion 322, the power of the first heating portion 321 is less than the power of the second heating portion 322.

[0113] Therefore, in the implementation, the circuit 140 can supply power to the heating element 32 by selectively using any one of the modes in Figures 5 to 8, so that the first heating portion 321 and the second heating portion 322 heat only one of them or heat simultaneously.

[0114] Or in some other variant embodiments, the heater 30 further comprises:

[0115] A heat-insulating element for surrounding or enclosing the heating element 32 on the outside to provide heat insulation on the outside. The heat-insulating element is, for example, a rolled aerogel felt, or a porous material or a vacuum tube, etc. Or in some other variant embodiments, the heat-insulating element of the heater 30 is a tube with an inner heat-insulating cavity; there is a heat-insulating cavity between the inner surface and the outer surface of the tubular heat-insulating element, and the pressure of the heat-insulating cavity is less than the external pressure, i.e. the heat-insulating element is a vacuum heat-insulating tube with a vacuum degree. Or in some other variant embodiments, there is a heat-insulating cavity between the inner surface and the outer surface of the tubular heat-insulating element, and the heat-insulating cavity is filled with a heat-insulating gas, such as argon; the thermal conductivity of argon is about one-third smaller than that of air at the same pressure and temperature, effectively providing heat insulation.

[0116] Or in some other variant embodiments, the heater 30 further comprises:

[0117] A temperature detection unit 323 for sensing the temperature of the first heating portion 321 by being attached to the first heating portion 321. The temperature detection unit 323 includes but is not limited to a thermocouple, an NTC thermistor (Negative Temperature Coefficient thermistor) or a PTC thermistor (Positive Temperature Coefficient thermistor), etc.

[0118] Or in yet other embodiments, the heater 30 further comprises:

[0119] A thermoplastic close-fitting member surrounds the temperature detection unit 323 outside the heater 30 for wrapping and fastening the first temperature detection unit.

[0120] In some embodiments, the thermoplastic close-fitting member comprises at least one of heat-resistant synthetic resin, polytetrafluoroethylene as Teflon, and silicon; in yet other embodiments, the thermoplastic close-fitting member comprises a heat-shrinkable tube or a high-temperature-resistant adhesive tape.

[0121] Or in yet other embodiments, the temperature detection unit 323 is not in contact with the first heating portion 321, but can still sense the temperature of the first heating portion 321.

[0122] The control method provided by some embodiments of the present application will be described below in combination with the exemplary application and implementation of the aerosol generating device provided by the embodiments of the present application. Please refer to FIG. 9, which is a flowchart of the control method provided by some embodiments of the present application. It can be understood that the execution subject of the control method can be one or more control units of a circuit, such as a microcontroller.

[0123] As shown in FIG. 9, the method S10 can specifically include the following steps:

[0124] S11: based on the real-time temperature of the first heating portion detected by the temperature detection unit, controlling the power supply to provide heating energy to the first heating portion in a current time period; and based on the total heating energy provided by the power supply to the first heating portion in a previous time period, controlling the power supply to provide heating energy to the second heating portion in the current time period.

[0125] It can be understood that the duration from the start of heating after the start of the aerosol generating device to the end of heating of the aerosol generating device can be divided into different heating stages according to the temperature jump of the first heating portion or the second heating portion.

[0126] For example, in FIG. 10, curve A is the temperature-time relationship curve of the first heating portion, and curve B is the temperature-time relationship curve of the second heating portion; in the entire duration, it can be divided into a first heating stage T1, a second heating stage T2, a third heating stage T3, and a fourth heating stage T4, and the duration of each heating stage is T1, T2, T3, and T4. Of course, the duration can also be divided into different heating stages according to other parameters, such as the proportion coefficient of the heating energy provided to the second heating portion and the heating energy provided to the first heating portion, the duration of heating, etc. The number of heating stages is not limited to the above cases.

[0127] In the first heating stage T1, the temperature of the first heating portion needs to be quickly raised, for example, from an initial temperature (ambient temperature) to 200-350°C, specifically 280°C, to generate aerosol or to generate a satisfactory amount of aerosol to meet the user's smoking needs. Generally, the first heating stage T1 occupies a short time, for example, 15-30s. In some examples, the curve A portion corresponding to the first heating stage T1 also includes a holding stage, that is, after the temperature of the first heating portion is raised to the maximum working temperature, the first heating portion is controlled to maintain at the maximum working temperature for a period of time.

[0128] In the first heating stage T1, the temperature of the second heating portion is slowly raised from an initial temperature (ambient temperature) to a first target temperature, which is less than the maximum working temperature of the first heating portion, for example, about 120°C. The first target temperature can raise the temperature of the substrate in the portion of the aerosol generating article corresponding to the second heating portion, but it is not enough to make the portion of the substrate generate aerosol. The second heating portion can be heated simultaneously with the first heating portion, or the second heating portion can be heated after the temperature of the first heating portion is raised to the maximum working temperature.

[0129] At the end of the first heating stage T1, the aerosol generating device outputs a prompt signal of the smokable aerosol to prompt the user to smoke. The prompt can be vibration, sound, light (for example, LED light always on or flashing), and the like.

[0130] In the second heating stage T2, the user can smoke the aerosol generated by the first heating portion. In the second heating stage T2, the temperature of the first heating portion is lowered to and maintained at a first preset temperature, for example, lowered to 250°C and maintained at the temperature. The temperature of the second heating portion is slowly raised from the first target temperature to a second target temperature, which is still less than the maximum working temperature of the first heating portion or less than the first preset temperature of the first heating portion, for example, about 180°C. The second target temperature further raises the temperature of the substrate in the portion of the aerosol generating article corresponding to the second heating portion, but it is still not enough to make the portion of the substrate generate aerosol.

[0131] In the third heating stage T3, the temperature of the first heating portion is still maintained at the first preset temperature. In this heating stage, the substrate in the portion of the aerosol generating article corresponding to the first heating portion will gradually decrease, and the substrate in the portion of the aerosol generating article corresponding to the second heating portion needs to be supplemented to avoid the problem that the amount of aerosol or the amount of substances contained in the aerosol smoked by the user is reduced, resulting in a decrease in the user's smoking experience. Therefore, the temperature of the second heating portion needs to be raised from the second target temperature to the first preset temperature and generate aerosol.

[0132] In the fourth heating stage T4, the substrate in the portion of the aerosol generating article corresponding to the first heating portion will be further reduced or almost exhausted, at this time, the temperature of the first heating portion can be lowered to and maintained at a second preset temperature, for example, lowered to 230°C and maintained at this temperature. While the temperature of the second heating portion still needs to be maintained at the first preset temperature to further provide the smokable aerosol.

[0133] In the above-mentioned first heating stage T1 to fourth heating stage T4, the electric core is controlled to provide heating energy to the first heating portion and the second heating portion, so that the first heating portion and the second heating portion operate according to the predetermined desired temperature curve.

[0134] In an example, the above-mentioned heating stage, for example, the second heating stage T2, is divided into a plurality of time periods, and the duration of each time period can be the same or different. Preferably, the duration of each time period is the same, for example, the duration of each time period is t. In some embodiments, the duration of the time period can range from 100 ms to 1 s. Taking the duration of the time period as 200 ms and the second heating stage T2 as 60 s as an example, the second heating stage T2 can be divided into 300 time periods, and the duration of each time period is the same.

[0135] In the above-mentioned at least one time period, in order to realize temperature control of the first heating portion, the control unit controls the electric core to provide heating energy to the first heating portion based on the real-time temperature of the first heating portion detected by the temperature detection unit.

[0136] In an example, the control unit controls the electric core to provide heating energy to the first heating portion in the at least one time period based on the real-time temperature and the target temperature of the first heating portion, so that the real-time temperature of the first heating portion approaches the target temperature.

[0137] Specifically, when the battery provides the heating energy to the first heating part, if the real-time temperature of the first heating part is less than the target temperature, the battery is controlled to continue to provide the heating energy to the first heating part; if the real-time temperature of the first heating part is greater than or equal to the target temperature, the battery is controlled to stop providing the heating energy to the first heating part. For example, in a time period of the second heating stage T2, if the real-time temperature of the first heating part is greater than or equal to the first preset temperature, the battery is controlled to stop providing the heating energy to the first heating part, so that the temperature of the first heating part starts to decrease; if the real-time temperature of the first heating part is greater than the first preset temperature, the battery is controlled to continue to provide the heating energy to the first heating part, so that the temperature of the first heating part starts to increase, thereby controlling the temperature of the first heating part to maintain at the first preset temperature for a period of time.

[0138] In the at least one time period, in order to ensure that the second heating part follows the first heating part to heat without temperature sensing, and to realize temperature control of the second heating part, the control unit can control the battery to provide the heating energy to the second heating part based on the total heating energy provided by the battery to the first heating part in the previous time period and a preset proportion coefficient corresponding to the at least one time period.

[0139] The control unit can determine the total heating energy provided by the battery to the first heating part in the previous time period at the end of the previous time period. The preset proportion coefficient is pre-stored in the memory of the control unit or independent of the memory of the control unit, and can be an experimental value or an empirical value. Each time period has a corresponding preset proportion coefficient. For example, if the second heating stage T2 is divided into 300 time periods, each of the 300 time periods has a corresponding preset proportion coefficient. Generally, the preset proportion coefficients corresponding to different time periods can be different, or the preset proportion coefficients corresponding to at least two time periods are the same.

[0140] In this way, in the at least one time period, the battery can be controlled to provide the heating energy to the second heating part based on the total heating energy provided by the battery to the first heating part in the previous time period and the preset proportion coefficient corresponding to the at least one time period.

[0141] In an example, the control unit controls the total heating energy provided by the battery to the second heating part in the at least one time period to be a product of the total heating energy provided by the battery to the first heating part in the previous time period and the preset proportion coefficient corresponding to the at least one time period.

[0142] Assuming Q1(T-1) represents the total heating energy provided by the battery to the first heating portion in the T-1th time period, Q2(T) represents the total heating energy provided by the battery to the second heating portion in the Tth time period, and K represents a preset proportional coefficient corresponding to the Tth time period. Then Q2(T) = K*Q1(T-1).

[0143] Specifically, when the battery provides heating energy to the second heating portion, the cumulative energy provided by the battery to the second heating portion is determined. If the cumulative energy is greater than or equal to the product of the total heating energy provided by the battery to the first heating portion in the previous time period and the preset proportional coefficient corresponding to the at least one time period, the battery is controlled to stop providing heating energy to the second heating portion. If the cumulative energy is less than the product of the total heating energy provided by the battery to the first heating portion in the at least one time period and the preset proportional coefficient corresponding to the at least one time period, the battery is controlled to continue providing heating energy to the second heating portion.

[0144] It can be understood that in the above implementation, through the preset proportional coefficient, the second heating portion is ensured to follow the first heating portion to heat without temperature sensing, thereby achieving temperature control of the second heating portion. In other examples, the total heating energy provided by the battery to the second heating portion in the at least one time period can be obtained through other calculation methods, for example, based on the total heating energy provided by the battery to the first heating portion in the previous time period, the total heating energy provided by the battery to the second heating portion in the at least one time period is calculated by using a fitted curve equation.

[0145] In an example, the at least one time period is divided into a plurality of energy supply periods, and in each energy supply period, the control unit controls the battery to provide heating energy to the second heating portion to remain unchanged.

[0146] In a specific implementation, the battery can provide heating energy to the second heating portion at fixed intervals (the energy supply periods can be the same or different), or provide heating energy to the second heating portion in a fixed energy supply period.

[0147] At the end of the energy supply period, the cumulative heating energy provided by the battery to the second heating portion is accumulated. If the cumulative energy is greater than or equal to the product of the total heating energy provided by the battery to the first heating portion in the previous time period and the preset proportional coefficient corresponding to the at least one time period, the battery is controlled to stop providing heating energy to the second heating portion. Otherwise, the battery is controlled to continue providing heating energy to the second heating portion.

[0148] In the at least one time period, the battery cell can provide heating energy to the first heating part and the second heating part simultaneously (i.e., control the first heating part and the second heating part to start heating at the same time, or control the first heating part and the second heating part to stop heating at the same time), or alternately provide heating energy to the first heating part and the second heating part. Controlling the battery cell to alternately provide heating energy to the first heating part and the second heating part is suitable for the case where the resistance values of the first heating part and the second heating part are small. Avoiding the problem that the current is too large and the battery cell cannot support when the first heating part and the second heating part are heated at the same time.

[0149] The following describes the alternately providing heating energy:

[0150] As shown in FIG. 11, the at least one time period is divided into a plurality of energy supply periods. In the energy supply period, the battery cell is controlled to alternately provide heating energy to the first heating part and the second heating part. Here, alternately means that at a certain time, the battery cell only provides heating energy to one of the first heating part and the second heating part, and does not provide heating energy to the first heating part and the second heating part at the same time. When the heating energy provided to the first heating part is ended, the heating energy provided to the second heating part is started. When the heating energy provided to the second heating part is ended, the heating energy provided to the first heating part is started.

[0151] In the energy supply period, the battery cell is controlled to alternately provide heating energy to the first heating part and the second heating part, so that the first heating part and the second heating part are alternately heated, and the number of alternations is at least one. That is, in some embodiments, the first heating part and the second heating part can be alternately heated multiple times in the energy supply period.

[0152] By dividing the time period into a plurality of energy supply periods, since the time length set in the energy supply period is relatively short, for example, 1 ms, 5 ms, 10 ms, 15 ms, 20 ms, the time (also referred to as the natural cooling stage) of the first heating part or the second heating part in the natural cooling state without being provided with heating energy in the energy supply period is also very short, so the temperature drop of the first heating part or the second heating part in the natural cooling state is also very limited. Moreover, in the next energy supply period, the temperature drop of the first heating part or the second heating part due to natural cooling will be quickly compensated by heating energy to maintain and / or improve the temperature, and will not affect the speed of generating aerosol. Compared with the case of simultaneously heating the first heating part and the second heating part, alternately providing heating energy to the first heating part and the second heating part can effectively save power consumption and improve the endurance.

[0153] In some embodiments, each energy supply period comprises a first partial energy supply period and a second partial energy supply period. In the first partial energy supply period, the control unit controls the power supply unit to supply the first heating portion with heating energy and stop supplying the second heating portion with heating energy. In the second partial energy supply period, the control unit controls the power supply unit to supply the second heating portion with heating energy and stop supplying the first heating portion with heating energy.

[0154] In this embodiment, the control unit controls the power supply unit to supply the first heating portion and the second heating portion with heating energy alternately according to the set time length, so that the first heating portion and the second heating portion can heat alternately accurately, thereby uniformly baking the aerosol generating article, providing aerosol with good taste, and effectively saving power consumption and improving the endurance.

[0155] In some embodiments, in each energy supply period, when the first heating portion is in a natural cooling state or the power supply unit stops supplying the first heating portion with heating energy or the control unit controls the power supply unit to supply the second heating portion with heating energy, the control unit controls the power supply unit to supply the first heating portion with heating energy and stop supplying the second heating portion with heating energy based on the real-time temperature of the first heating portion.

[0156] In some embodiments, in each energy supply period, when the first heating portion is in a natural cooling state or the power supply unit stops supplying the first heating portion with heating energy or the control unit controls the power supply unit to supply the second heating portion with heating energy, the control unit controls the power supply unit to supply the first heating portion with heating energy and stop supplying the second heating portion with heating energy based on the real-time temperature of the first heating portion.

[0157] When the first heating portion is in the natural cooling state, the temperature detection unit detects the real-time temperature of the first heating portion. If the real-time temperature is lower than the preset target temperature, the control unit controls the power supply unit to supply the first heating portion with heating energy and stop supplying the second heating portion with heating energy.

[0158] Specifically, in a certain energy supply period, the first heating portion is in a natural cooling state, i.e., the power supply unit stops supplying the first heating portion with heating energy. Since the power supply unit supplies the first heating portion and the second heating portion with heating energy alternately, when the first heating portion is in the natural cooling state, the power supply unit supplies the second heating portion with heating energy. During this period, if the real-time temperature of the first heating portion is detected to be lower than the target temperature, the power supply unit needs to be controlled to supply the first heating portion with heating energy immediately and stop supplying the second heating portion with heating energy to ensure the temperature of the first heating portion.

[0159] In this embodiment, during the energy supply period, by detecting the real-time temperature of the first heating part, if the real-time temperature is less than or equal to the preset temperature threshold, the control unit controls the power supply to provide heating energy to the first heating part and stops providing heating energy to the second heating part, so as to ensure that the first heating part can quickly reach the predetermined temperature without causing the temperature of the first heating part to be excessively reduced due to heat dissipation in the natural cooling state, affecting the heating work of the aerosol generating device, uniformly baking the aerosol generating article, providing aerosol with good taste, and effectively saving power consumption and improving the endurance.

[0160] It should be noted that in the foregoing examples, the temperature detection unit detects the temperature of the first heating part, and the second heating part follows the first heating part to control the temperature. In other examples, the temperature detection unit detects the temperature of the second heating part, and the first heating part follows the second heating part to control the temperature, which is also feasible.

[0161] Referring to FIG. 12, FIG. 12 is a flowchart of another control method provided by some embodiments of the present application. It can be understood that the execution subject of the control method can be one or more control units of a circuit, such as a microcontroller.

[0162] As shown in FIG. 12, the method S20 can specifically include the following steps:

[0163] S21: based on the real-time temperature of the first heating part, controlling the power supply to provide heating energy to the first heating part in the current time period; and based on the total heating energy provided by the power supply to the first heating part in the previous time period, controlling the power supply to provide heating energy to the second heating part in the current time period.

[0164] It should be noted that the device embodiments described above are only schematic, wherein the units described as separate components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., they can be located in one place, or distributed on multiple network units. According to actual needs, part or all of the modules can be selected to achieve the purpose of the embodiment scheme.

[0165] Through the above description of the embodiments, those skilled in the art can clearly understand that the embodiments can be implemented by means of software plus a general hardware platform, and of course can also be implemented by hardware. Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by a computer program instructing related hardware, and the program can be stored in a computer readable storage medium. When the program is executed, it can include the processes of the above-mentioned embodiment methods. The storage medium can be a magnetic disc, an optical disc, a read-only memory (ROM) or a random access memory (RAM) and the like.

[0166] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; under the idea of the present application, the technical features of the above examples or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of the different aspects of the present application as described above. In order to be brief, they are not provided in detail; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An aerosol-generating device, characterized by, Comprise: an electric core for providing electric power; a heater for heating an aerosol generating article to generate an aerosol; the heater comprising a first heating portion and a second heating portion; a temperature detection unit; a circuit configured to control the electric core to provide heating energy to the first heating portion in a current time period based on a real-time temperature of the first heating portion detected by the temperature detection unit, and to control the electric core to provide heating energy to the second heating portion in the current time period based on a total heating energy provided by the electric core to the first heating portion in a previous time period.

2. The aerosol-generating device of claim 1, wherein, Further comprise a chamber removably receiving the aerosol generating article; the first heating portion and the second heating portion are arranged in sequence along an axial direction of the chamber.

3. The aerosol-generating device of claim 1, wherein, The circuit is configured to control the electric core to provide heating energy to the first heating portion in the current time period based on the real-time temperature of the first heating portion and a target temperature, so that the real-time temperature of the first heating portion approaches the target temperature.

4. The aerosol-generating device of claim 3, wherein, The circuit is configured to control the electric core to continue providing heating energy to the first heating portion if the real-time temperature of the first heating portion is less than the target temperature, and to control the electric core to stop providing heating energy to the first heating portion if the real-time temperature of the first heating portion is greater than or equal to the target temperature, when the electric core provides heating energy to the first heating portion.

5. The aerosol-generating device of claim 1, wherein, The circuit is configured to control the electric core to provide a total heating energy to the second heating portion in the current time period as a product of a total heating energy provided by the electric core to the first heating portion in a previous time period and a preset proportionality coefficient corresponding to the current time period.

6. The aerosol-generating device of claim 5, wherein, The circuit is configured to determine a cumulative energy provided by the electric core to the second heating portion when the electric core provides heating energy to the second heating portion; If the cumulative energy is greater than or equal to a product of a total heating energy provided by the electric core to the first heating portion in a previous time period and a preset proportionality coefficient corresponding to the current time period, the circuit controls the electric core to stop providing heating energy to the second heating portion. If the cumulative energy is less than the product of the total heating energy provided by the electric core to the first heating portion in the previous time period and the preset proportionality coefficient corresponding to the current time period, the circuit controls the electric core to continue providing heating energy to the second heating portion.

7. The aerosol-generating device of claim 5, wherein, The current time period comprises a plurality of energy supply periods; The circuit is configured to control the electric core to keep the heating energy provided to the second heating portion unchanged in each energy supply period.

8. The aerosol-generating device of claim 1, wherein, The preset proportionality coefficients corresponding to different time periods are different, or the preset proportionality coefficients corresponding to at least two time periods are the same.

9. The aerosol-generating device of claim 1, wherein, The circuit is configured to determine a total heating energy provided by the electric core to the first heating portion in the current time period at an end time of the current time period. 10.The aerosol-generating device of claim 1, wherein, The current time period comprises a plurality of energy supply periods; The circuit is configured to control the battery cell to provide heating energy to the first heating portion and the second heating portion simultaneously or alternately during the energy supply period. 11.A control method of an aerosol generating device, the control method comprising: The aerosol generating device comprises: a battery cell for providing electric power; a heater for heating an aerosol generating article to generate an aerosol; the heater comprises a first heating portion and a second heating portion; a temperature detection unit; The control method comprises: controlling the battery cell to provide heating energy to the first heating portion in a current time period based on a real-time temperature of the first heating portion detected by the temperature detection unit; and controlling the battery cell to provide heating energy to the second heating portion in the current time period based on a total heating energy provided by the battery cell to the first heating portion in a previous time period. 12.A control method of an aerosol generating device, the control method comprising: The control method comprises: controlling the battery cell to provide heating energy to the first heating portion in a current time period based on a real-time temperature of the first heating portion; and controlling the battery cell to provide heating energy to the second heating portion in the current time period based on a total heating energy provided by the battery cell to the first heating portion in a previous time period.

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