CN220109135U

CN220109135U - Gas mist generating device and heater for gas mist generating device

Info

Publication number: CN220109135U
Application number: CN202320695034.1U
Authority: CN
Inventors: 彭亮; 徐中立; 李永海
Original assignee: Shenzhen FirstUnion Technology Co Ltd
Current assignee: Shenzhen FirstUnion Technology Co Ltd
Priority date: 2023-03-24
Filing date: 2023-03-24
Publication date: 2023-12-01
Anticipated expiration: 2033-03-24

Abstract

The application provides an aerosol-generating device and a heater for the aerosol-generating device; wherein the aerosol-generating device comprises: the heating element includes first and second heating portions arranged at intervals in a longitudinal direction; the battery cell is used for providing power; the circuit is used for connecting the first heating part and the second heating part to the battery core in a serial or parallel mode so as to heat simultaneously; a temperature sensor coupled to the first heating part; the circuit is further configured to control power provided to the first heating portion and the second heating portion based on the sensed temperature of the first heating portion of the temperature sensor to maintain the first heating portion at a first target temperature and to maintain the second heating portion at a second target temperature. The above aerosol-generating device is capable of selectively heating both portions of the heating element simultaneously, either in series or in parallel, and controlling the temperature of both portions based on their power correlation, solely by means of a temperature sensor incorporated into the first heating portion.

Description

Gas mist generating device and heater for gas mist generating device

Technical Field

The embodiment of the application relates to the technical field of heating non-combustion aerosol generation, in particular to an aerosol generation device and a heater for the aerosol generation device.

Background

Smoking articles (e.g., cigarettes, cigars, etc.) burn tobacco during use to produce tobacco smoke. Attempts have been made to replace these tobacco-burning products by making products that release the compounds without burning.

An example of such a product is a heating device that releases a compound by heating rather than burning a material. For example, the material may be an aerosol-generating article comprising tobacco or other non-tobacco products, which may or may not comprise nicotine. Known heating devices, in order to differentially heat different parts of an aerosol-generating article to different temperatures simultaneously, employ a plurality of separate heating elements which individually heat different parts of the aerosol-generating article, the plurality of separate heating elements being individually heated under an electrical power supply.

Disclosure of Invention

One embodiment of the utility model provides an aerosol-generating device configured to heat an aerosol-generating article to generate an aerosol; comprising the following steps:

a heating element for heating the aerosol-generating article; the heating element includes first and second heating portions arranged at intervals in a longitudinal direction;

the battery cell is used for providing power;

A circuit arranged to selectively connect the first and second heating portions to the electrical core in series or parallel such that the first and second heating portions heat simultaneously in series or parallel;

a temperature sensor coupled to the first heating part for sensing a temperature of the first heating part;

the circuit is further configured to control power provided to the first heating portion and the second heating portion based on the sensed temperature of the first heating portion of the temperature sensor to maintain the first heating portion at a first target temperature and the second heating portion at a second target temperature.

In some embodiments, further comprising:

a first electrode, a second electrode, and a third electrode; the first heating part is electrically connected between the first electrode and the second electrode; the second heating part is electrically connected between the first electrode and the third electrode;

the circuit is arranged to selectively connect the first and second heating portions to the electrical cell in series or parallel by connecting the first, second and third electrodes to the electrical cell in different electrical connections.

In some embodiments, the heating element further defines thereon:

a spacing is defined between the first heating portion and the second heating portion in a longitudinal direction to inhibit heat transfer between the first heating portion and the second heating portion.

In some embodiments, the first heating portion and the second heating portion of the heating element are arranged in a spaced apart, but not continuous, arrangement by forming a space between the first heating portion and the second heating portion. And the first heating portion and the second heating portion are non-contact.

In some embodiments, the heating element is provided with a plurality of holes such that the heating element forms a grid pattern.

In some embodiments, the aperture has an extension in a longitudinal direction of the heating element that is greater than an extension in a circumferential direction of the heating element.

In some embodiments, the aperture comprises:

a first hole disposed at the first heating part;

and a second hole disposed at the second heating part.

In some embodiments, the first aperture has an extension in the longitudinal direction of the heating element that is less than the extension of the second aperture in the longitudinal direction of the heating element;

And/or the extension of the first hole along the circumferential direction of the heating element is smaller than the extension of the second hole along the circumferential direction of the heating element;

and/or, in the longitudinal direction and/or the circumferential direction of the heating element, the spacing between adjacent first holes is larger than the spacing between adjacent second holes.

In some embodiments, the first heating portion comprises: a plurality of first resistive conductor paths defined by the first apertures and extending circuitously between the first and second electrodes in a circumferential direction of the heating element;

and/or, the second heating portion comprises: a plurality of second resistive conductor paths defined by the second apertures and extending circuitously between the first and third electrodes in a circumferential direction of the heating element.

In some embodiments, the path length of the first resistive conductor path is less than the path length of the second resistive conductor path; and/or the width of the first resistive conductor path is greater than the width of the second resistive conductor path.

In some embodiments, the heating element further comprises:

and a connection part extending from the first heating part to the second heating part for electrically connecting the first heating part and the second heating part.

In some embodiments, the first heating portion, the second heating portion, and the connecting portion are integrally formed.

In some embodiments, the first electrode is at least partially bonded to the connecting portion.

In some embodiments, the heating element includes first and second ends that are opposite in a longitudinal direction;

the heating element is arranged with a side opening extending from the first end to the second end such that the heating element is non-closed in a circumferential direction.

In some embodiments, the side opening has a first side and a second side facing away in a circumferential direction of the heating element;

the first electrode is arranged on the first side, and the second electrode and the third electrode are arranged on the second side.

In some embodiments, further comprising:

a chamber for receiving an aerosol-generating article;

an opening through which, in use, an aerosol-generating article can be at least partially received within or removed from the chamber;

the heating element is arranged to surround at least a portion of the chamber; and the first heating portion is closer to the opening than the second heating portion.

In some embodiments, further comprising:

a substrate surrounding or defining at least a portion of the chamber;

the heating element comprises a coating or film or conductive track or heating mesh bonded to the substrate; the heating element and the substrate are thermally conductive to each other, thereby enabling the substrate to heat the aerosol-generating article by receiving heat from the heating element.

In some embodiments, the circuit is arranged to selectively connect one of the positive or negative poles of the cell with the second electrode and the other with the third electrode, thereby connecting the first and second heating portions in series to the cell for simultaneous heating.

In some embodiments, the circuit is arranged to selectively connect one of the positive or negative poles of the cell with the first electrode and the other with the second and third electrodes simultaneously, thereby connecting the first and second heating portions in parallel to the cell for simultaneous heating.

In some embodiments, the first heating portion and the second heating portion are connected to the battery cell in parallel and heated at the same time, and the power of the first heating portion is greater than the power of the second heating portion.

In some embodiments, the first heating portion and the second heating portion are connected in series to the electrical core while heating, the power of the first heating portion being less than the power of the second heating portion.

In some embodiments, the circuitry is configured to:

connecting the first and second heating portions in parallel to the electrical core during a first time period to cause the first and second heating portions to heat simultaneously;

the first and second heating portions are connected in series to the electrical cell during a second time period such that the first and second heating portions heat simultaneously.

In some embodiments, the circuitry is further configured to:

controlling the power provided by the electrical core to the first heating portion and the second heating portion to maintain a first temperature difference at a first time period when the temperature of the first heating portion is higher than the temperature of the second heating portion, and to maintain a second temperature difference at a second time period when the temperature of the first heating portion is higher than the temperature of the second heating portion;

the first temperature difference is greater than the second temperature difference.

In some embodiments, the first heating portion extends along a circumference of the heating element by a dimension that is greater than a dimension of the second heating portion extending along a circumference of the heating element.

In some embodiments, the second electrode and the second heating portion are relatively staggered in a longitudinal direction of the heating element.

In some embodiments, the heating element comprises at least one of a resistive heating element or an infrared heating element.

Yet another embodiment of the present application also proposes an aerosol-generating device configured to heat an aerosol-generating article to generate an aerosol; comprising the following steps:

the battery cell is used for providing power;

circuitry configured to:

connecting one of the positive electrode or the negative electrode of the battery cell with the first electrode and the other one with the second electrode and the third electrode at the same time in a first time period, so that the first heating part and the second heating part are connected to the battery cell in parallel to heat simultaneously;

In a second time period, one of the positive electrode or the negative electrode of the cell is connected to the second electrode, and the other is connected to the third electrode, so that the first heating portion and the second heating portion are connected in series to the cell to be heated simultaneously.

the battery cell is used for providing power;

circuitry configured to:

connecting the first heating portion and the second heating portion in parallel to the electrical core during a first time period, such that the power of the first heating portion heats simultaneously at a power greater than the power of the second heating portion;

and in a second time period, connecting the first heating part and the second heating part to the battery cell in series, so that the power of the first heating part is heated simultaneously according to the power smaller than that of the second heating part.

Yet another embodiment of the present application also proposes a heater for an aerosol-generating device, comprising:

A base body arranged in a tubular shape and extending in a length direction of the heater;

a heating element disposed around at least a portion of the substrate; the heating element comprises:

a first heating portion and a second heating portion arranged at intervals in a longitudinal direction;

a spacing defined between the first heating portion and the second heating portion in a longitudinal direction to inhibit heat transfer between the first heating portion and the second heating portion;

and a temperature sensor coupled to the first heating part for sensing a temperature of the first heating part.

The above aerosol-generating device is capable of selectively heating both portions of the heating element simultaneously, either in series or in parallel, and controlling the temperature of both portions based on their power correlation, solely by means of a temperature sensor incorporated into the first heating portion.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

FIG. 1 is a schematic diagram of an aerosol-generating device according to an embodiment;

FIG. 2 is a schematic diagram of one embodiment of the heater of FIG. 1;

FIG. 3 is an exploded view of the heater of FIG. 2 prior to assembly of the various components;

FIG. 4 is a schematic view of the heating element of FIG. 3 after being circumferentially expanded;

FIG. 5 is a schematic diagram of directing current over a heating element in one embodiment;

FIG. 6 is a schematic diagram of a further embodiment of directing current over a heating element;

FIG. 7 is a schematic diagram of a further embodiment of directing current over a heating element;

FIG. 8 is a schematic diagram of a further embodiment of directing current over a heating element;

FIG. 9 is a schematic diagram of a heating profile during heating of a heating element in one embodiment;

FIG. 10 is a schematic view of a heating profile during heating of a heating element in yet another embodiment.

Detailed Description

In order that the application may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

One embodiment of the present application contemplates an aerosol-generating device 100, such as that shown in fig. 1, for heating, rather than 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 inhalation.

In an alternative implementation, the aerosol-generating article 1000 preferably employs tobacco-containing materials that release volatile compounds from a matrix upon heating; or may be a non-tobacco material capable of being heated and thereafter adapted for electrical heating for smoking. The aerosol-generating article 1000 preferably employs a solid substrate, which may comprise one or more of a powder, granules, chip strands, ribbons or flakes of one or more of vanilla leaves, dried flowers, volatilizable flavored herbs, tobacco leaves, homogenized tobacco, expanded tobacco; alternatively, the solid substrate may contain additional volatile flavour compounds, either tobacco or non-tobacco, to be released when the substrate is heated.

And as shown in fig. 1, after the aerosol-generating article 1000 is received in the aerosol-generating device 100, it may be advantageous for a user to draw on, for example, a filter, which is partially exposed to the outside of the aerosol-generating device 100.

The configuration of the aerosol-generating device 100 according to an embodiment of the present application may be seen in fig. 1, the overall device shape being generally configured in a flat cylindrical shape, the external components of the aerosol-generating device 100 comprising:

the housing 10 substantially defines the outer surface of the aerosol-generating device and is hollow in its interior, thereby forming an assembly space for the necessary functional components such as electronics and heating devices. The housing 10 has a proximal end 110 and a distal end 120 opposite in the longitudinal direction; in use, the proximal end 110 is the end that is proximate to the user to facilitate handling of the aerosol-generating article 1000 and heating and drawing; distal end 120 is the end remote from the user. Wherein,

The proximal end 110 is provided with a receiving opening 111 through which receiving opening 111 the aerosol-generating article 1000 may be received within the housing 10 to be heated or removed from the housing 10;

the distal end 120 is provided with an air inlet hole 121; the air intake holes 121 serve to allow outside air to enter into the case 10 during the suction.

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

As shown in fig. 1, the aerosol-generating device 100 further comprises:

a chamber for receiving or housing the aerosol-generating article 1000; in use, the aerosol-generating article 1000 may be removably received within the chamber by the receiving opening 111.

And as shown in fig. 1, the aerosol-generating device 100 further comprises:

an air passage 150 between the chamber and the air inlet 121; in turn, in use, the air channel 150 provides a channel path from the air inlet 121 into the chamber/aerosol-generating article 1000, as indicated by arrow R11 in fig. 1.

As shown in fig. 1, the aerosol-generating device 100 further comprises:

a battery cell 130 for supplying power; preferably, the battery cell 130 is a rechargeable battery cell 130 and can be charged by being connected to an external power source;

A circuit board 140, on which circuitry is arranged or integrated, for controlling the heating or operation of the aerosol-generating device 100.

As shown in fig. 1, the aerosol-generating device 100 further comprises:

the heater 30 at least partially surrounds and defines a chamber, and when the aerosol-generating article 1000 is received within the housing 10, the heater 30 at least partially surrounds or encloses the aerosol-generating article 1000 and heats from the periphery of the aerosol-generating article 1000. And is at least partially received and retained within the heater 30 when the aerosol-generating article 1000 is received within the housing 10.

Referring to fig. 2 and 3, the heater 30 is configured in a substantially elongated tubular shape, and includes:

a tubular base 31 arranged around the chamber; and in practice, a chamber for receiving the aerosol-generating article 1000 is surrounded and defined by the tubular hollow 330 of the substrate 31. The material of the substrate 31 is a material with good heat conduction performance, such as ceramics, glass, surface-insulated metal or alloy, such as anodized aluminum, aluminum alloy, copper alloy, stainless steel, etc.; in use, the aerosol-generating article 1000 is at least partially defined by the substrate 31 for receiving and retaining. And in some implementations, the thermal conductivity of the matrix 31 is at least 10W/m.k, preferably or at least 100W/m.k; or in some implementations, the thermal conductivity of the matrix 31 is greater than 200W/m.k or higher. In some implementations, the substrate 31 includes a metal suitable for the above high thermal conductivity, such as aluminum, copper, titanium, or alloys containing at least one of them, and the like.

In some embodiments, the substrate 31 has a wall thickness of about 0.05-1 mm; and the base 31 has an inner diameter of about 5.0 to 8.0 mm; and the substrate 31 has a length of about 30 to 60 mm. In practice, the length of the aerosol-generating article 1000 surrounded or encompassed by the substrate 31 is greater than 30mm; or the aerosol-generating article 1000 may be heated by the substrate 31 to a length of greater than 30mm.

Referring to fig. 2 and 3, the heater 30 further includes:

a heating element 32 at least partially surrounding or enclosing the substrate 31; in use, the substrate 31 heats the aerosol-generating article 1000 by receiving or transferring heat from the heating element 32.

In some implementations, the heating element 32 includes a resistive heating element; and, the heating element 32 can generate resistive joule heat to generate heat when a direct current flows through the heating element 32. And in some implementations, the heating element 32 is made of a metallic material, a metallic alloy, graphite, carbon, a conductive ceramic or other ceramic material, and a composite of metallic materials with suitable resistance. Suitable metals or alloy materials include at least one of nickel, cobalt, zirconium, titanium, nickel alloys, cobalt alloys, zirconium alloys, titanium alloys, nichrome, nickel-iron alloys, iron-chromium-aluminum alloys, iron-manganese-aluminum alloys, or stainless steel, among others. Or in still other implementations, the heating element 32 may also include an electromagnetic induction heating element, an infrared heating element, or the like.

Or in yet other variations, the heater 30 may comprise only the heating element 32, with a chamber being surrounded or defined by the heating element 32 for receiving the aerosol-generating article 1000 and directly transferring heat to the aerosol-generating article 1000 for heating.

With further reference to fig. 2 and 3, the heating element 32 is configured in a cylindrical shape that surrounds or encloses the substrate 31. And, an extension dimension of the heating element 32 in the longitudinal direction of the heater 30 is smaller than an extension dimension of the base 31; for example, in some implementations, the heating element 32 has a length greater than 20-50 mm. For example, specifically, as shown in fig. 2 and 3, the heater 30 includes an end 310 and an end 320 facing away in the longitudinal direction; and in particular implementations, ends 310 and 320 are defined by ends of base 31 in the longitudinal direction. The first end of the heating element 32 is spaced from the end 310 by a distance d1, the distance d1 being about 3-10 mm; and the second end of the heating element 32 has a spacing d2 from the end 320, the spacing d2 being approximately 3-10 mm.

After assembly, the heating element 32 does not completely wrap or surround the outer surface of the substrate 31, thereby providing the outer surface of the substrate 31 with a first exposed region 311 adjacent the end 310 defined by a spacing d 1. And, the outer surface of the substrate 31 has a second exposed region 312 adjacent to the end 320 defined by a spacing d 2. In assembly, the aerosol-generating device 100 provides support for the heater 30 by being coupled to a first exposed area defined by the spacing d1 and a second exposed area defined by the spacing d2 by a clamping or support or securing member.

In some implementations, the heating element 32 is insulated from the substrate 31. In some conventional implementations, the outer surface of the substrate 31 may be surface-insulating by surface anodization, spraying, deposition, or the like. The surface insulating layer may include at least one of an oxide, a glaze, a ceramic, an organic polymer, and the like. Or in yet other implementations, the heating element 32 is insulated from the substrate 31 by providing a thin film of an insulating organic polymer therebetween; for example, a film of an organic polymer such as a polyimide film, a polytetrafluoroethylene film, or the like.

Referring to fig. 2-4, the heating element 32 is a resistive heating mesh. In this embodiment, the heating element 32 is a heating element wound from a sheet-like or web-like substrate. The wound heating element 32 is not closed tubular in the circumferential direction, but is tubular with side openings 335 in the longitudinal direction. And, the side opening 335 extends from a first end to a second end of the heating element 32 in the longitudinal direction. And in some implementations, the side openings 335 have a width of approximately 2-6 mm.

Or in still other variations, the surface of the substrate 31 is insulating; the heating element 32 is a resistive heating track or film or coating formed on the substrate 31 by printing, spraying, deposition, or the like. For example, the heating element 32 is a circumferentially serpentine, resistive heating track; alternatively, the heating element 32 is a patterned resistive heating track.

Or in still other variations, the heating element 32 is an infrared-emitting coating formed on the substrate 31 by printing, spraying, depositing, or the like; the heating element 32 is an electrically-induced infrared-emitting coating that emits infrared light into the chamber to heat the aerosol-generating article 1000 when an electrical current is passed through the infrared-emitting coating. The infrared emission coating for radiating infrared rays may include oxides of at least one or more metal elements such as Mg, al, ti, zr, mn, fe, co, ni, cu, cr, zn, which are capable of radiating far infrared rays having heating effect when electrically heated to an appropriate temperature.

As shown in fig. 2 to 4, the heating element 32 includes:

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

the first heating portion 321 and the second heating portion 322 define a space d3 therebetween; the first heating portion 321 and the second heating portion 322 are discontinuously arranged by the interval d 3. And, the first heating portion 321 and the second heating portion 322 are separated by a space d3 so that they are arranged at intervals in the longitudinal direction. In some embodiments, the spacing d3 has a length of about 3-10 mm. Further, after assembly, a third exposed region 313 of the surface of the substrate 31 is defined by the distance d 3.

FIG. 4 shows a schematic view of the heating element 32 after circumferential deployment; in this embodiment, the first heating portion 321 and the second heating portion 322 of the post-deployment heating element 32 are net-like in shape. And, the length of the deployed heating element 32 is greater than the width; for example, in fig. 4, the length dimension of the heating element 32 after deployment is approximately 32.8mm and the width dimension is approximately 18.7mm. And a ratio of the length dimension to the width dimension of the heating element 32 of at least 1.5 or more is advantageous for reducing the resistance boost power at the same area. And in some implementations, by having a ratio of the length dimension of the heating element 32 to the extension dimension in the circumferential direction or circumference of at least 1.5 or more, the resistance of the heating element 32 may be advantageously further reduced to below 0.6Ω or less by directing current in the circumferential direction of the heating element 32; or in still other implementations, directing current in the circumferential direction of the heating element 32 may further reduce the resistance of the heating element 32 to below 0.3 Ω or less, with the overall resistance of the heating element 32 advantageously being controlled to be between 0.2 Ω and 0.6 Ω.

And further with reference to fig. 4, in the deployed heating element 32, the first heating portion 321 is adjacent to or defines a first end and the second heating portion 322 is adjacent to or defines a second end. And in some implementations, the extension length of the first heating portion 321 is substantially equal to the extension length of the second heating portion 322; alternatively, the first heating portion 321 and the second heating portion 322 have substantially the same extension length; for example, in one particular implementation, the first heating portion 321 and/or the second heating portion 322 have a length of about 15 mm. Or in still other variations, the first heating portion 321 has an extension that is greater than the extension of the second heating portion 322; alternatively, the second heating portion 322 is longer than the first heating portion 321.

In use, by arranging the electrodes at intervals in the circumferential direction, the current is further directed in the circumferential direction of the first heating portion 321 and the second heating portion 322 of the heating element 32. The deployed heating element 32 includes a first side 3210 and a second side 3220 that face away from each other in a width direction. The heater 30 further includes:

a first electrode 331, such as an elongated conductive lead, extends from the first end of the heating element 32 to outside the second end; and, the first electrode 331 is simultaneously combined with and electrically conductive with the first heating portion 321 and the second heating portion 322 at the first side 3210;

a second electrode 332, such as an elongated conductive lead, is coupled to and electrically conductive with the first heating portion 321 at a second side 3220;

a third electrode 333, such as an elongated conductive lead, is coupled to and electrically conductive with second heating portion 322 at second side 3220.

After being disposed on the base 31, the first side 3210 and the second side 3220 define a side opening 335; alternatively, side opening 335 is located between first side 3210 and second side 3220 in a circumferential direction.

The material of the first electrode 331 and/or the second electrode 332 and/or the third electrode 333 is made of a material of a good conductor metal having a relatively low resistivity, such as gold, silver, copper or an alloy containing them. In use, an electric current can be directed in the circumferential direction of the first heating portion 321 and the second heating portion 322 by the first electrode 331 and/or the second electrode 332 and/or the third electrode 333. And, the first electrode 331 and/or the second electrode 332 and/or the third electrode 333 are securely bonded to the heating element 32 by welding or the like and are formed to be conductive.

And the heating element 32 has disposed thereon: the holes are substantially in a matrix or array or regular arrangement, thereby providing the heating element 32 with a net shape. In the implementation shown in fig. 4, the aperture is rectangular in shape; and the dimension of the aperture along the length of the heating element 32 is greater than the dimension along the circumferential or width direction. Alternatively, the holes may extend along the length of the heating element 32.

Or in still other variations, the heating element 32 may have more heating portions, such as a third heating portion spaced longitudinally from the second heating portion 322 in sequence; or may also include a fourth heating portion, a fifth heating portion, and so on.

Accordingly, the heater 30 may further include: more electrodes. And some of the electrodes may serve as common electrodes for the plurality of heating portions. For example, in some specific embodiments, the heater 30 may include:

a first heating portion 321, a second heating portion 322, and a third heating portion;

a first electrode 331 disposed on the first side 3210, extending from the first heating portion 321 to the second heating portion 322, and being electrically conductive with the first heating portion 321 and the second heating portion 322;

A second electrode 332 disposed on the second side 3220 and bonded only to the first heating portion 321 to form electrical conduction;

a third electrode 333 disposed on the second side 3220, extending from the second heating portion 321 to the third heating portion, and electrically conductive with the second heating portion 322 and the third heating portion;

and a fourth electrode disposed on the first side 3210 and coupled to the third heating part only to form electrical conduction.

In practice, one of the first heating portion 321, the second heating portion 322, and the third heating portion may be selectively heated alone, two in parallel or in series, or three simultaneously in parallel or in series-parallel by adjusting the connection manner of the above electrodes to the circuit.

Specifically, the holes in the heating element 32 include:

a hole 3211 disposed on the first heating portion 321;

an aperture 3221 is disposed on the second heating portion 322.

In some implementations, the apertures 3211 in the first heating portion 321 and/or the apertures 3221 in the second heating portion 322 are formed by laser cutting or etching or the like on the sheet-like substrate prior to winding to form the heating element 32. The holes 3211 on the first heating portion 321 are arranged in an array such that the first heating portion 321 takes a mesh shape; and, the holes 3221 of the second heating portion 322 are arranged in an array such that the second heating portion 322 has a mesh shape.

In the embodiment of fig. 2 and 4, aperture 3211 and/or aperture 3221 are rectangular apertures. Or in still other variations, the apertures 3211 and/or 3221 may also be circular, triangular, polygonal, or the like in shape.

In some embodiments, the area of aperture 3211 on first heating portion 321 is smaller than the area of aperture 3221 on second heating portion 322. Alternatively, the length of the aperture 3211 in the first heating portion 321 is less than the length of the aperture 3221 in the second heating portion 322; alternatively, the width of the aperture 3211 in the first heating portion 321 is smaller than the width of the aperture 3221 in the second heating portion 322. For example, in some implementations, the aperture 3211 has a length of approximately 3-7 mm and a width of 0.2-0.8 mm; and, aperture 3221 has a length of about 4-8 mm, a width of 0.7-1.2 mm.

Or in still other variations, the apertures 3211 and/or 3221 may also be arranged to be an extension in the circumferential direction of the heating element 32 that is greater than an extension in the longitudinal direction of the heating element 32; i.e. the holes 3211 and/or the holes 3221 have a shape which is longer in the circumferential direction.

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

As shown in fig. 4, the heating element 32 further includes:

a connection portion 324 disposed at the first side 3210; the connection portion 324 extends from the first heating portion 321 to the second heating portion 322, and is used to connect the first heating portion 321 and the second heating portion 322 to be electrically conductive. Further, by the connection portion 324, the space d33 is closed at the first side 3210, and the space d33 is opened at the second side 3220.

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 fabricated. For example, the first heating portion 321, the connecting portion 324, and the second heating portion 322 are integrally obtained by removing unnecessary portions of the sheet-like base material precursor by etching, cutting, or the like.

In an embodiment, the first electrodes 331 are combined with the connection portions 324 and electrically conductive to each other; thereby being advantageous for improving stability of the electrical connection of the first electrode 331 with the second heating portion 322 of the first heating portion 321.

In the embodiment shown in fig. 4, the width of the first heating portion 321 may be greater than the width of the second heating portion 322; so that when the first heating portion 321 and the second heating portion 322 are flush at the first side 3210, the first heating portion 321 protrudes slightly at the second side 3220 relative to the second heating portion 322. The second electrode 332 and the third electrode 333 are welded, and the elongated second electrode 332 is offset from the third electrode 333/second heating portion 322 in the longitudinal direction of the heating element 32, which is advantageous in preventing a short circuit or the like therebetween.

Or in still other variations, the width of the first heating portion 321 may be equal to the width of the second heating portion 322; then after welding the elongated second electrode 332 and third electrode 333, insulation is provided by sleeving an insulating tube or spraying a surface insulation layer over the second electrode 332 and third electrode 333, respectively, to prevent them from coming into contact during assembly to form a short circuit.

In use, current can be selectively directed on the first heating portion 321 and/or the second heating portion 322 of the heating element 32 by selectively connecting any two or three of the first electrode 331, the second electrode 332, and the third electrode 333 to the circuit board 140. In particular, for example, the first electrode 331, the second electrode 332 and the third electrode 333 are selectively connected to the circuit board 140 by a switching tube, such as a MOS tube, which can be switched between an on state and an off state, so that the heating section of the heating element 32 to the aerosol-generating article 1000 can be changed.

By selectively connecting the first electrode 331, the second electrode 332, and the third electrode 333 to the circuit board 140 in different electrical connection manners, it is possible to selectively heat only one of the first heating part 321 and the second heating part 322 alone, or it is also possible to selectively heat the first heating part 321 and the second heating part 322 simultaneously in series or in parallel.

Specifically, for example, one of the first heating portion 321 or the second heating portion 322 may be individually activated to heat, the other not activated to not heat, 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 may be connected to the circuit board 140 in different series or parallel connection, such that the first heating portion 321 or the second heating portion 322 may simultaneously respectively apply different powers to different sections of the aerosol-generating article 1000, such that sections of the aerosol-generating article 1000 surrounded by the first heating portion 321 or the second heating portion 322 may have different temperatures, resulting in different aerosol-generating efficiencies.

Specifically, fig. 5 shows a schematic diagram of conducting the current i11 on the first heating portion 321 by connecting the first electrode 331 and the second electrode 332 to the positive electrode and the negative electrode of the battery cell 130, respectively, after connecting the first electrode 331 and the second electrode 332 to the circuit board 140, respectively. According to the connection form shown in fig. 5, in which a closed loop is formed in the manner of fig. 5, a circumferential operating current is formed only on the first heating portion 321, and no current is formed on the second heating portion 322.

According to fig. 5, when a current is conducted on the first heating portion 321 through the first electrode 331 and the second electrode 332, a plurality of resistive conductor paths are formed on the first heating portion 321 from the first electrode 331 to the second electrode 332 in the circumferential direction; the plurality of resistive conductor paths are substantially meander-shaped; and these resistive conductor paths are defined by holes 3211.

Specifically, fig. 6 shows a schematic diagram of a circuit formed by connecting the first electrode 331 and the third electrode 333 to the positive electrode and the negative electrode of the battery cell 130 respectively after the first electrode 331 and the third electrode 333 are connected to the circuit board 140 respectively in another embodiment, so as to guide the current i21 on the second heating portion 322. According to the connection form in which the closed loop is formed in the manner of fig. 6, as shown in fig. 6, the circumferential operating current is formed only on the second heating portion 322, and no current is formed on the first heating portion 321. According to fig. 6, when a current is conducted on the second heating portion 322 through the first electrode 331 and the second electrode 332, several resistive conductor paths are formed on the second heating portion 322 from the first electrode 331 to the third electrode 333 in the circumferential direction; the plurality of resistive conductor paths are substantially meander-shaped; and these resistive conductor paths are defined by holes 3221.

In the embodiment of fig. 5 and 6, the path width of current i11 is greater than the path width of current i 21. So that the resistance value of the first heating portion 321 is smaller than the resistance value of the second heating portion 322 when current is guided in the circumferential direction of the circumferential first heating portion 321 and the second heating portion 322 in the manner of fig. 5 or 6.

Fig. 7 shows a schematic diagram of a further embodiment in which the first heating portion 321 and the second heating portion 322 are simultaneously connected in parallel to conduct an electric current; in fig. 7, the first electrode 331 is connected to the circuit board 140 to be connected to the positive electrode of the battery cell 130, and the second electrode 332 and the third electrode 333 are connected to the circuit board 140 to be connected to the negative electrode of the battery cell 130. The circumferential current i12 on the first heating portion 321 and the circumferential current i22 on the second heating portion 322 can be simultaneously formed so that the first heating portion 321 and the second heating portion 322 are simultaneously heated. And at this time, voltages across the first heating portion 321 and the second heating portion 322 connected in parallel are the same; it can be seen from the power-voltage-and-resistance relation formula p=u2/R that the resistance of the first heating portion 321 is relatively smaller such that the first heating portion 321 has a heating power greater than that of the second heating portion 322.

Fig. 8 shows a schematic diagram of a further embodiment in which the first heating portion 321 and the second heating portion 322 are simultaneously connected in series to conduct an electric current. In fig. 8, the second electrode 332 is connected to the circuit board 140 and is connected to the positive electrode of the battery cell 130, and the third electrode 333 is connected to the circuit board 140 and is connected to the negative electrode of the battery cell 130; and in this embodiment, the first electrode 331 is not connected to a circuit, thereby forming a series arrangement of the first heating portion 321 and the second heating portion 322 in fig. 8. And in fig. 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. As can be seen from the power-to-current-and-resistance relationship formula p=i2×r, when the resistance of the first heating portion 321 is smaller than that of the second heating portion 322, the power of the first heating portion 321 is smaller than that of the second heating portion 322.

In practice, the circuit board 140 can supply power to the heating element 32 by selectively using any one of fig. 5 to 8, so that the first heating portion 321 and the second heating portion 322 heat only one or both.

Or in still other variations, the heater 30 further comprises:

The insulating element is used to surround or enclose the heating elements 32 on the outside to provide insulation on their outside. The insulating element is for example a rolled aerogel blanket, or a porous material or a vacuum tube, etc. Or in still other variations, the insulating element of heater 30 is a tube having an internal insulating cavity; between the inner and outer surfaces of the tubular insulating element there is an insulating cavity, the pressure of which is smaller than the pressure of the outside, i.e. the insulating element is a vacuum insulating pipe with a vacuum. Or in yet other variations, a thermally insulating cavity is provided between the inner and outer surfaces of the tubular thermally insulating element, the thermally insulating cavity being filled with a thermally insulating gas, such as argon; argon has a thermal conductivity less than about one third that of air at equivalent pressure and temperature, effectively providing thermal insulation.

Or in still other variations, the heater 30 further comprises:

the temperature sensor is attached to the first heating portion 321 to sense the temperature of the first heating portion 321.

Or in still other variations, the heater 30 further comprises:

a thermoplastic cling member surrounds the temperature sensor on the exterior of the heater 30 for wrapping and securing the first temperature sensor.

In some embodiments, the thermoplastic cling member comprises at least one of a heat resistant synthetic resin, polytetrafluoroethylene as teflon, and silicon; in still other variations, the thermoplastic cling members include heat shrink tubing or high temperature resistant tape.

For example, in one particular embodiment, the heating process for the aerosol-generating article 1000 comprises:

a first time period S10, in which the first electrode 331 and the second electrode 332 are connected to the circuit board 140 by using the electrical connection method of fig. 5, so as to conduct a current on the first heating portion 321; causing the aerosol-generating article 1000 to be heated by a first section surrounded by the first heating portion 321;

a second time period S20, in which the second electrode 332 and the third electrode 333 are connected to the circuit board 140 by using the electrical connection method of fig. 8 to connect the positive electrode and the negative electrode of the battery cell 130, so that the first heating portion 321 and the second heating portion 322 are connected in series and heated simultaneously; in this stage, the first heating portion 321 is heated at a lower power than the second heating portion 322.

In this manner, the first section of the aerosol-generating article 1000 surrounded by the first heating portion 321 can be rapidly heated first during a pre-heating phase, e.g., the first time phase S10; then in a second time period S20, both the first section of the aerosol-generating article 1000 surrounded by the first heating portion 321 and the second section surrounded by the second heating portion 322 are heated, and the temperature of the second section of the aerosol-generating article 1000 surrounded by the second heating portion 322 is gradually increased to be close to the temperature of the first section surrounded by the first heating portion 321, reducing their temperature difference due to the first time period S10 heating only the first section.

In some embodiments, the first time period S10 and the second time period S20 are continuous; or in still other variant embodiments, the first time period S10 and the second time period S20 may be discontinuous, e.g. spaced apart.

Or in yet another variation, the heating process of the aerosol-generating article 1000 comprises:

a first time period S10a, connecting the first electrode 331 and the second electrode 332 to the circuit board 140 by using the electrical connection method of fig. 5, so as to conduct current on the first heating portion 321; causing the aerosol-generating article 1000 to be heated by a first section surrounded by the first heating portion 321;

a second time period S20a, in which the first electrode 331 is connected to the positive electrode of the cell 130 and the second electrode 332 and the third electrode 333 are connected to the negative electrode of the cell 130 in an electrical connection manner as shown in fig. 7, so that the first heating portion 321 and the second heating portion 322 are heated while being connected in parallel; in this second time period, the first heating portion 321 is heated at a higher power than the second heating portion 322.

In this manner, the first section of the aerosol-generating article 1000 surrounded by the first heating portion 321 can be rapidly heated first during a pre-heating phase, e.g., the first time phase S10 a; and then in a second time period S20a, heating the first section of the aerosol-generating article 1000 surrounded by the first heating portion 321 and the second section surrounded by the second heating portion 322 simultaneously, and gradually increasing the temperature of the first section of the aerosol-generating article 1000 surrounded by the first heating portion 321 to a greater temperature difference than the temperature of the second section surrounded by the second heating portion 322.

in the first time period S10b, the second electrode 332 and the third electrode 333 are connected to the circuit board 140 by adopting the electrical connection manner in fig. 7 to connect the positive electrode and the negative electrode of the battery cell 130 respectively, so that the first heating portion 321 and the second heating portion 322 are connected in parallel and heated simultaneously; in this stage, the first heating portion 321 heats up at a greater power than the second heating portion 322, causing the first section of the aerosol-generating article 1000 surrounded by the first heating portion 321 to heat up to a higher temperature than the second section;

a second time period S20b, in which the second electrode 332 and the third electrode 333 are connected to the circuit board 140 by using the electrical connection method of fig. 8 to connect the positive electrode and the negative electrode of the battery cell 130, so that the first heating portion 321 and the second heating portion 322 are connected in series and heated simultaneously; in this stage, the first heating portion 321 is heated at a lower power than the second heating portion 322, thereby gradually shrinking the temperature difference of the first heating portion 321 and the second heating portion 322 due to the first time period S10 b.

For example, in the first time period S10b, the first heating portion 321 is heated to a higher temperature than the second heating portion 322, and they are made to have a first temperature difference; while at the second time stage S20b they are heated simultaneously and the temperature of the second heating portion 322 is raised faster, thereby shrinking them from the first temperature difference to the second temperature difference.

And in this embodiment, the first heating portion 321 and the second heating portion 322 are always heated simultaneously based on the heating process, i.e., in the first time period S10b and the second time period S20 b. Their power is correlated when they are heated simultaneously; the temperature at which they are heated at the same time may also be related based on the power dependence; further, in the embodiment, the temperature of the second heating part 321 having the correlation can be determined by a temperature sensor coupled only to the first heating part 321 to sense the temperature of the first heating part 321 while based on the temperature of the first heating part 321 sensed by the temperature sensor. Thus, in the control, the circuit can control the power supplied to the first heating portion 321 and the second heating portion 322 when they are simultaneously heated based on only the temperature of the first heating portion 321 sensed by the temperature sensor, so that they can individually maintain a desired target temperature. And, in an embodiment, there may be no temperature sensor coupled to the second heating part 322 on the heater 30 for sensing the temperature of the second heating part 322.

Also for example, in one embodiment, the first heating portion 321 and the second heating portion 322 are electrically connected such that the first section and the second section of the aerosol-generating article 1000 are heated simultaneously in parallel, all the while using the electrical connection shown in fig. 7. During heating, the first and second sections of the aerosol-generating article 1000 always have different temperatures. Specifically, the temperature profile during heating using the electrical connection of fig. 7 throughout this embodiment can be seen in fig. 9, where the profile S1 in fig. 9 is the temperature profile of the first heating portion 321 and the profile S2 is the temperature profile of the second heating portion 322; the heating process comprises the following steps:

In the time period of 0 to T1, the first heating portion 321 is controlled to quickly rise to the target temperature T1 for preheating; and during this first time period, the second heating portion 322 heats up at a lower rate than the first heating portion 321 due to the lower power, so that the second section of the aerosol-generating article 1000 heats up slower than the first section and cannot heat up to the temperature T1 as quickly;

during the time period T1-T2, the heating temperature of the first heating portion 321 is maintained substantially at the target temperature T1 for heating, such that the first section of the surrounded aerosol-generating article 1000 heats to generate an aerosol. In this second time period, the heating temperature of the second heating portion 322 is substantially gradually increased, but the temperature is still lower than that of the first heating portion 321;

during the time period from T2 to T4, the first heating portion 321 is brought to and maintained at a higher temperature T2 at T3 earlier or faster than T4; of course, in this third time period, the second heating portion 322 still heats up to a temperature T2 lower than the first heating portion 321;

at the time period from T4 to T5, the heating temperature of the first heating portion 321 is controlled to be kept at the target temperature T2 for heating until the suction is completed.

In some embodiments, the curve S1 in fig. 9 may be used as a target temperature curve during the heating of the first heating portion 321; and the curve S2 may be a target temperature curve during the heating of the second heating portion 322. And, the circuit may maintain the heating temperature of the first heating portion 321 at the target temperature on the curve S1 only by the sensing result of the temperature sensor coupled to the first heating portion 321; the heating temperature of the second heating portion 322 can also be maintained at the target temperature of the curve S2 based on the correlation of the power as well.

In some implementations shown in fig. 9, the target temperature of the first heating portion 321 at the time period of 0 to T1 and the time period of T1 to T2 is set to a temperature T1, and the temperature T1 may be set to 200 to 450 ℃.

In the embodiment shown in fig. 9, the target temperatures of the second heating portion 322 in the time periods T2 to T4 and the time periods T4 to T5 may be set to the temperature T1 as well, which is the same as the target temperatures of the first heating portion 321 in the time periods 0 to T1 and the time periods T1 to T2.

In the implementation shown in fig. 9, the target temperature of the second heating portion 322 at time periods t 2-t 4 and time periods t 4-t 5 may be higher or lower than the target temperature of the first heating portion 321 at time periods 0-t 1 and time periods t 1-t 2.

In the implementation shown in fig. 9, the rapid warm-up and warm-up time for the 0-t 1 time period may be set to about 5-20 s; the time of the suction in the time period from t1 to t2 is about 40 to 80 seconds; the time of the time period from t2 to t4 is about 5 to 20 seconds; the time of the suction in the time period t4 to t5 is about 40 to 100 seconds.

In the implementation shown in fig. 9, the 0-t 1 time period and the t 1-t 2 time period rapidly cause the first heating portion 321 to heat the section of the aerosol-generating article 1000 surrounded by to rapidly generate aerosol; and heating again in the time period from t2 to t4 and the time period from t4 to t 5.

Or in the implementation shown in fig. 9, the length of the time period t 4-t 5 may be greater than the length of the time period t 1-t 2 to compensate for heating the section of the aerosol-generating article 1000 surrounded by the second heating portion 322.

And in the above implementation, the heating temperature of the first heating portion 321 and/or the second heating portion 322 is not decreased. Such as a stepwise temperature increase at the first heating portion 321 and/or the second heating portion 322.

For example, fig. 10 shows a temperature profile of a first heating portion 321 and a second heating portion 322 of a heating element 32 in a particular embodiment heating a first section and a second section of an aerosol-generating article 1000, respectively; in fig. 10, a curve S1 is a temperature curve of the first heating portion 321, and a curve S2 is a temperature curve of the second heating portion 322; as shown in fig. 10, the heating process includes:

In the first time period S10c (time 0 to T1), the first heating portion 321 is rapidly warmed up to the target temperature T1 in parallel electrical connection in fig. 7, and the temperature of the second heating portion 322 is lower than the target temperature T1;

in the second time period S20c (time t1 to t 2), the second heating portion 322 is relatively faster warmed up in the series electrical connection manner of fig. 8, thereby gradually decreasing the temperature difference from the first heating portion 321; until time T2 they reach substantially the same or close target temperature T2;

in the third time period S30c (time t2 to t 3), the first heating portion 321 and the second heating portion 322 are continuously kept heated at the same time in the electrical connection manner of fig. 8; but adjusting the power output by the battery cell 130 to enable the second heating part 322 to continuously rise to a higher target temperature T3, and keeping the temperature of the first heating part 321 at the target temperature T2;

in a fourth time period S40c (time T3 to T4), for example, a warm-keeping period, the electrical connection of fig. 8 or 6 is maintained to adjust the power output from the battery cell 130, so that the second heating portion 322 is kept substantially at the target temperature T3 to be heated until the end of the pumping; while the first heating portion 321 has volatilized relatively quickly due to the rapid heating in advance in the first and second time periods S10c and S20c, the temperature of the second heating portion 322 is maintained in the fourth time period S40c to decrease the temperature of the first heating portion 321 or to stop the heating of the first heating portion 321 to naturally cool down.

In some embodiments shown in FIG. 10, the rapid warm-up and warm-up time for the 0-t 1 time period may be set to about 5-20 seconds; the time of the suction in the time period from t1 to t2 is about 40 to 80 seconds; the time of the time period from t2 to t3 is about 5 to 20 seconds; the time of the suction of the time period t3 to t4 is about 40 to 100 seconds.

In some specific implementations shown in fig. 10, the higher temperatures of the 0-t 1 time period and the t 1-t 2 time period rapidly cause the first heating portion 321 to heat the first section of the surrounding aerosol-generating article 1000 to rapidly generate an aerosol; and heating again in the time period from t2 to t3 and the time period from t3 to t 4.

It should be noted that the description of the application and the accompanying drawings show preferred embodiments of the application, but are not limited to the embodiments described in the description, and further, that modifications or variations can be made by a person skilled in the art from the above description, and all such modifications and variations are intended to fall within the scope of the appended claims.

Claims

1. An aerosol-generating device configured to heat an aerosol-generating article to generate an aerosol; characterized by comprising the following steps:

The battery cell is used for providing power;

2. The aerosol-generating device of claim 1, further comprising:

3. The aerosol-generating device of claim 1 or 2, wherein the heating element further defines thereon:

4. An aerosol-generating device according to claim 1 or 2, wherein the first heating portion has a dimension extending in the circumferential direction of the heating element that is greater than the dimension of the second heating portion extending in the circumferential direction of the heating element.

5. The aerosol-generating device according to claim 2, wherein the second electrode and the second heating portion are relatively staggered in a longitudinal direction of the heating element.

6. The aerosol-generating device of claim 2, wherein the heating element is provided with a plurality of apertures such that the heating element forms a grid pattern.

7. The aerosol-generating device according to claim 6, wherein the aperture has an extension in the longitudinal direction of the heating element that is greater than an extension in the circumferential direction of the heating element.

8. The aerosol-generating device of claim 6, wherein the aperture comprises:

A first hole disposed at the first heating part;

and a second hole disposed at the second heating part.

9. The aerosol-generating device of claim 8, wherein an extension of the first aperture along the longitudinal direction of the heating element is less than an extension of the second aperture along the longitudinal direction of the heating element;

10. The aerosol-generating device of claim 8, wherein the first heating portion comprises: a plurality of first resistive conductor paths defined by the first apertures and extending circuitously between the first and second electrodes in a circumferential direction of the heating element;

11. The aerosol-generating device of claim 10, wherein a path length of the first resistive conductor path is less than a path length of the second resistive conductor path; and/or the width of the first resistive conductor path is greater than the width of the second resistive conductor path.

12. The aerosol-generating device of claim 2, wherein the heating element further comprises:

13. The aerosol-generating device according to claim 12, wherein the first heating portion, the second heating portion and the connecting portion are integrally formed.

14. The aerosol-generating device of claim 12, wherein the first electrode is at least partially bonded to the connecting portion.

15. The aerosol-generating device of claim 2, wherein the heating element comprises first and second ends that are opposite in a longitudinal direction;

16. The aerosol-generating device of claim 15, wherein the side opening has first and second sides facing away in a circumferential direction of the heating element;

17. The aerosol-generating device according to claim 1 or 2, further comprising:

a chamber for receiving an aerosol-generating article;

18. The aerosol-generating device of claim 17, further comprising:

a substrate surrounding or defining at least a portion of the chamber;

19. The aerosol-generating device of claim 2, wherein the circuit is arranged to selectively connect one of the positive or negative poles of the electrical cell with the second electrode and the other with the third electrode, thereby connecting the first and second heating portions in series to the electrical cell for simultaneous heating.

20. The aerosol-generating device of claim 2, wherein the circuitry is arranged to selectively connect one of the positive or negative poles of the electrical cell with the first electrode and the other with the second and third electrodes simultaneously, thereby connecting the first and second heating portions in parallel to the electrical cell for simultaneous heating.

21. The aerosol-generating device according to claim 1 or 2, wherein the first heating portion and the second heating portion are connected to the battery cell in parallel and heated at the same time, and the power of the first heating portion is larger than the power of the second heating portion.

22. The aerosol-generating device according to claim 1 or 2, wherein the first heating portion and the second heating portion are connected in series to the electrical core while heating, and the power of the first heating portion is smaller than the power of the second heating portion.

23. The aerosol-generating device of claim 1 or 2, wherein the circuitry is configured to:

24. The aerosol-generating device of claim 1 or 2, wherein the circuitry is further configured to:

25. The aerosol-generating device of claim 1 or 2, wherein the heating element comprises at least one of a resistive heating element or an infrared heating element.

26. An aerosol-generating device according to claim 1 or 2, wherein the aerosol-generating device is devoid of a temperature sensor incorporated into the second heating portion to sense the temperature of the second heating portion.

27. An aerosol-generating device configured to heat an aerosol-generating article to generate an aerosol; characterized by comprising the following steps:

the battery cell is used for providing power;

circuitry configured to:

28. An aerosol-generating device configured to heat an aerosol-generating article to generate an aerosol; characterized by comprising the following steps:

the battery cell is used for providing power;

circuitry configured to:

29. A heater for an aerosol-generating device, comprising: