Heating assembly and aerosol generation device

Abstract

The present disclosure provides a heating assembly and an aerosol generation device. The heating assembly comprises an accommodation structure, a plurality of heating films, and a power supply assembly. The accommodation structure is provided with a proximal opening and is used for accommodating an aerosol generation product by means of the proximal opening and radiating infrared rays when being heated so as to heat the aerosol generation product; the plurality of heating films are arranged at intervals on the accommodation structure in the length direction of the accommodation structure and are used for heating the accommodation structure during power-on; the heating films are distributed in a linear shape; the power supply assembly comprises at least three electrodes; the at least three electrodes are respectively used for being coupled to the power supply assembly and are arranged at a first end and / or a second end of the accommodation structure; and every two electrodes form a group and are electrically connected to one heating film so as to supply power to the corresponding heating film. Segmented heating of the heating assembly can be achieved, continuous release and vaping taste of an aerosol are guaranteed, and the phenomenon that the local temperature is too high or too low is avoided; moreover, the energy consumption of the heating assembly is reduced.

Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] The present disclosure claims priority to China Patent Applicant No. 202211132175.9, filed on September 16, 2022, the contents of which are herein incorporated by reference in their entireties.TECHNICAL FIELD

[0002] Embodiments of the present disclosure relate to the technical field of electronic atomization, and in particular to a heating assembly and an aerosol generating device.BACKGROUND

[0003] A traditional aerosol generating article may generate a large amount of harmful substances during a process of being heated. However, a heat-not-burning aerosol generating device is only required to heat a specially designed heating assembly to around 350°C, so as to atomize the aerosol generating article to generate an aerosol, with a noticeable reduction in harmful substances. Different from other electronic atomization devices, the heat-not-burning aerosol generating device controls a baking temperature of the aerosol generating article for generating the aerosol through controlling a temperature of the heating assembly, which becomes more popular among consumers.

[0004] The heating assembly may be divided into two types of forms, including a center-type heating assembly inserted into the aerosol generating article, and a circumferential-type heating assembly wrapped around an outside of the aerosol generating article. Currently, in both the center-type heating assembly and the circumferential-type heating assembly, a heating element is generally uniformly raised to a certain temperature to heat the aerosol generating article along an axial length direction of the aerosol generating article, which may cause a problem of the heating element failing to control different parts of the aerosol generating article individually along the axial direction of the aerosol generating article based on an actual temperature field requirement of the heating element, for example, the heating element fails to separately control two parts of the aerosol generating article. Especially for a relatively long aerosol generating article, when such aerosol generating article is heated as a whole, rather than by parts, a phenomenon of a localized temperature being too high or too low may occur, thereby affecting a taste of the aerosol.SUMMARY OF THE DISCLOSURE

[0005] Some embodiments of the present disclosure provide a heating assembly and an aerosol generating device to address a problem of a current heating assembly failing to control a heating element to control different parts of an aerosol generating article individually along an axial direction of the aerosol generating article based on an actual temperature field requirement of the heating element, for example, the heating element fails to separately control two parts of the aerosol generating article. Especially for a relatively long aerosol generating article, when such aerosol generating article is heated as a whole, rather than by parts, a phenomenon of a localized temperature being too high or too low may occur, thereby affecting a taste of the aerosol.

[0006] To address the technical problems above, some embodiments of the present disclosure provide a heating assembly. The heating assembly includes an accommodating structure, a plurality of heating films, and a power supply assembly. The accommodating structure includes a near-end opening. The accommodating structure is configured to accommodate an aerosol generating article through the near-end opening and radiate infrared light to heat the aerosol generating article when the accommodating structure is heated. The plurality of heating films are spaced apart from each other on the accommodating structure along a length direction of the accommodating structure and are configured to heat the accommodating structure when the plurality of heating films are powered. Each of the plurality of heating films is disposed linearly. The power supply assembly includes three electrodes. The at least three electrodes are configured to be coupled to a power source assembly. The at least three electrodes are disposed on a first end and / or a second end of the accommodating structure. Every two of the at least three electrodes as a group are electrically connected to a corresponding one of the plurality of heating films to supply power to the corresponding one of the plurality of heating films.

[0007] In some embodiments, each of the plurality of heating films includes at least one heating track.

[0008] In some embodiments, each of the plurality of heating films includes at least two heating tracks connected in parallel.

[0009] In some embodiments, at least a part of the at least two heating tracks is a curved track.

[0010] In some embodiments, the curved track is a U-shaped track or an S-shaped track.

[0011] In some embodiments, the plurality of heating films include a first heating film and a second heating film. The power supply assembly includes a first electrode, a second electrode, a third electrode, and a fourth electrode. The first electrode and the second electrode are disposed on the first end of the accommodating structure. Each of the first electrode and the second electrode is electrically connected to the first heating film. The third electrode and the fourth electrode are disposed on the second end of the accommodating structure. Each of the third electrode and the fourth electrode is electrically connected to the second heating film.

[0012] In some embodiments, the first heating film includes more than one heating track. Both ends of each heating track of the first heating film extend to a part of the accommodating structure that is close to the first end, enabling one end of each heating track of the first heating film to be electrically connected to the first electrode and the other end of each heating track of the first heating film to be electrically connected to the second electrode. The second heating film includes more than one heating track. Both ends of each heating track of the second heating film extend to a part of the accommodating structure that is close to the second end, enabling one end of each heating track of the second heating film to be electrically connected to the third electrode and the other end of each heating track of the second heating film to be electrically connected to the fourth electrode.

[0013] In some embodiments, each of the first electrode, the second electrode, the third electrode, and the fourth electrode includes both a coupling part and a connecting part. The coupling part is disposed on an end of the accommodating structure and is configured to be coupled to the power source assembly, to supply power to a corresponding one of the plurality of heating films. The connecting part is electrically connected to the coupling part and extends away from the coupling part along the length direction of the accommodating structure, enabling the connecting part to be electrically connected to an end of each heating track of an adjacent one of the plurality of heating films.

[0014] In some embodiments, the coupling part has an arc structure extending along a circumferential direction of the accommodating structure.

[0015] In some embodiments, each one of the plurality of heating films includes a first heating track and a second heating track that are spaced apart from each other. The first heating track is a curved track extending along a circumferential direction of the accommodating structure. The second heating track surrounds an outer contour of the first heating track.

[0016] In some embodiments, the second heating track includes a first part, a second part, and a third part that are sequentially connected to each other. Along the circumferential direction of the accommodating structure, the first part is disposed on one side of the first heating track, and the third part is disposed on the other side of the first heating track. The first part is a curved track extending along the circumferential direction of the accommodating structure, and the third part is a straight track extending along the length direction of the accommodating structure. The second part is disposed on a side of the first heating track that is close to a central region of the accommodating structure. The second part is a straight track extending along the circumferential direction of the accommodating structure.

[0017] In some embodiments, each of the first part and the first heating track is a U-shaped track that includes at least one U-shaped structure, and each U-shaped structure shares a same shape.

[0018] In some embodiments, the plurality of heating films include a first heating film and a second heating film. The power supply assembly includes a first electrode, a second electrode, and a third electrode. The first electrode is disposed on the first end of the accommodating structure and is electrically connected to the first heating film. The second electrode is disposed on the second end of the accommodating structure and is electrically connected to the second heating film. The third electrode is disposed on a same end of the accommodating structure with the first electrode or the second electrode and is electrically connected to each of the first heating film and the second heating film.

[0019] In some embodiments, the first electrode and / or the second electrode has an arc structure extending along a circumferential direction of the accommodating structure. The third electrode includes a common coupling part and a common connecting part. The common coupling part is disposed on a same end of the accommodating structure with the first electrode or the second electrode and is configured to be coupled to the power source assembly. The common connecting part is electrically connected to the common coupling part and extends away from the common coupling part along the length direction of the accommodating structure, enabling the common connecting part to be electrically connected to each of the first heating film and the second heating film.

[0020] In some embodiments, each of the first heating film and the second heating film includes more than one heating track. Each heating track of the first heating film and each heating track of the second heating film are curved tracks extending along the length direction of the accommodating structure.

[0021] In some embodiments, the first heating film includes a first connecting part and a second connecting part, a first end of each heating track of the first heating film is connected to the first connecting part, enabling each heating track of the first heating film to be electrically connected to the first electrode through a part of the first connecting part; a second end of each heating track of the first heating film is connected to the second connecting part, enabling each heating track of the first heating film to be electrically connected to the third electrode through a part of the second connecting part; and / or, the second heating film includes a third connecting part and a fourth connecting part, a first end of each heating track of the second heating film is connected to the third connecting part, enabling each heating track of the second heating film to be electrically connected to the second electrode through a part of the third connecting part; a second end of each heating track of the second heating film is connected to the fourth connecting part, enabling each heating track of the second heating film to be electrically connected to the third electrode through a part of the fourth connecting part.

[0022] In some embodiments, the accommodating structure further includes a substrate and a radiating layer. The substrate has a hollow tubular shape and is configured to accommodate the aerosol generating article. The radiating layer is disposed on an inner surface of a sidewall of the substrate and is configured to radiate infrared light to heat the aerosol generating article when the radiating layer is heated. The plurality of heating films are disposed on a side of the substrate away from the radiating layer.

[0023] In some embodiments, the accommodating structure further includes a substrate and a radiating layer. The substrate has a hollow tubular shape and is configured to accommodate the aerosol generating article. The radiating layer is disposed on an outer surface of a sidewall of the substrate and is configured to radiate infrared light to heat the aerosol generating article when the radiating layer is heated. The plurality of heating films are disposed on a side of the radiating layer away from the substrate.

[0024] In some embodiments, the accommodating structure further includes a substrate. The substrate has a hollow tubular shape. The substrate includes a main body and an infrared radiation material dispersed within the main body. The substrate is configured to accommodate the aerosol generating article and radiate infrared light to heat the aerosol generating article when the substrate is heated. The plurality of heating films are disposed on an outer surface of a sidewall of the substrate.

[0025] In some embodiments, the substrate is a transparent substrate.

[0026] To address the technical problems above, some embodiments of the present disclosure provide an aerosol generating device. The aerosol generating device includes the heating assembly mentioned above and a power source assembly. The power source assembly is electrically connected to the heating assembly and is configured to supply power to the heating assembly.

[0027] Different from the related art, some technical effects of the present disclosure may be the following. Some embodiments of the present disclosure provide the heating assembly and the aerosol generating device. The heating assembly includes the accommodating structure and the plurality of heating films. The plurality of heating films are spaced apart from each other along the length direction of the accommodating structure. Each of the plurality of heating films is disposed linearly. The plurality of heating films are configured to heat the accommodating structure when the plurality of heating films are powered, which enables the accommodating structure to be heated to radiate the infrared light. The infrared light is further configured to heat and atomize the aerosol generating article that is accommodated in the accommodating structure. Since the infrared light has a certain degree of penetrability, does not require medium, and provides a relatively high heating efficiency, heating the aerosol generating article through the infrared light may effectively improve the preheating efficiency of the aerosol generating article and reduce the temperature difference between the interior of the aerosol generating article and the exterior of the aerosol generating article, thereby ensuring the uniform roasting of the aerosol generating article and reducing a risk of the aerosol generating article being scorched due to a localized high temperature. In addition, the power source assembly that includes at least three electrodes is provided. Every two of the at least three electrodes as a group are electrically connected to a corresponding one of the plurality of heating films, which enables each group of electrodes to supply power to a corresponding one of the plurality of heating films, thereby further enabling the plurality of heating films that are spaced apart from each other to receive electrical power from the power source assembly based on the corresponding group of electrodes in an independent manner, forming multiple heating regions on the accommodating structure along the length direction of the accommodating structure, and allowing for a segmented heating of the heating assembly. Thus, the heating assembly is enabled to control a heating temperature of each heating region based on an actual temperature field requirement, ensuring a continuous generation of the aerosol and a consistent taste before and after user inhalation, and providing an avoidance of a phenomenon that a localized temperature becomes too high or too low. Besides, the at least three electrodes that are configured to be coupled to the power source assembly are disposed on the first end and / or the second end of the accommodating structure, not only enabling the at least three electrodes to supply power to the plurality of heating films in the independent manner to realize the segmented heating function of the heating assembly, but also reducing the need for setting an additional electrode to be coupled to the power source in the middle region of the accommodating structure along the length direction thereof. In this way, the risk of the additional electrode in the middle region conducting thermal heat to the outside when the additional electrode is in contact with other metals may be effectively reduced, which not only reduces the energy consumption of the heating assembly but also ensures the temperature consistency between the middle region and other regions of the accommodating structure that are adjacent to the middle region, thereby improving the atomization effect of the aerosol generating article corresponding to the middle region of the accommodating structure and enhancing the user's inhalation experience or inhalation taste.BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG. 1 is a schematic structural view of an aerosol generating system according to some embodiments of the present disclosure. FIG. 2 is a schematic structural view of an aerosol generating device according to some embodiments of the present disclosure. FIG. 3 is a schematic cross-sectional view of a heating assembly according to a first embodiment of the present disclosure. FIG. 4 is a schematic perspective view of a heating assembly according to some embodiments of the present disclosure. FIG. 5a is an exploded schematic view of the heating assembly shown in FIG. 4 from a first viewing angle. FIG. 5b is an exploded schematic view of the heating assembly shown in FIG. 4 from a second viewing angle. FIG. 6 is a schematic cross-sectional view of a heating assembly according to some embodiments of the present disclosure. FIG. 7 is a schematic structural view illustrating that an aerosol generating article is accommodated in an accommodating structure according to some embodiments of the present disclosure. FIG. 8 is a schematic structural view illustrating that an aerosol generating article is accommodated in an accommodating structure according to some other embodiments of the present disclosure. FIG. 9a is a schematic view illustrating that a plurality of heating films and a power supply assembly shown in FIG. 4 unfold along a circumferential direction of an accommodating structure. FIG. 9b is a schematic structural view of a first heating film, a first electrode, and a second electrode shown in FIG. 9a. FIG. 10 is a schematic view illustrating that a plurality of heating films and a power supply assembly unfold along a circumferential direction of an accommodating structure according to some other embodiments of the present disclosure. FIG. 11 is a schematic perspective view of a heating assembly according to some other embodiments of the present disclosure. FIG. 12 is an exploded schematic view of the heating assembly shown in FIG. 11. FIG. 13 is a schematic view illustrating that a plurality of heating films and a power supply assembly shown in FIG. 11 unfold along a circumferential direction of an accommodating structure. FIG. 14 is a schematic view illustrating that a plurality of heating films and a power supply assembly unfold along a circumferential direction of an accommodating structure according to still some other embodiments of the present disclosure. FIG. 15 is a schematic cross-sectional view of a heating assembly according to a second embodiment of the present disclosure. FIG. 16 is a schematic cross-sectional view of a heating assembly according to another embodiment of the present disclosure. FIG. 17 is a schematic cross-sectional view of a heating assembly according to a third embodiment of the present disclosure.

[0029] Reference signs: 1, aerosol generating device; 2, aerosol generating article; 10, heating assembly; 20, power source assembly; 11, accommodating structure; 111, substrate; 110, accommodating chamber; a, first end; b, second end; 112, radiating layer; 113, first insulting layer; 114, second insulating layer; 12, heating film; 12a, first heating film; 12b, second heating film; 121, first heating track; 122, second heating track; 123, first connecting part; 124, second connecting part; 125, third connecting part; 126, fourth connecting part; 13, power supply assembly; 131 / 136, first electrode; 132 / 137, second electrode; 133 / 138, third electrode; 134, fourth electrode; 135a, coupling part; 135b, connecting part; 139a, common coupling part; 139b, common connecting part.DETAILED DESCRIPTION

[0030] The technical solutions in some embodiments of the present disclosure will be described clearly and comprehensively with reference to figures in some embodiments of the present disclosure. Obviously, the described embodiments are merely some embodiments of the present disclosure, not all embodiments of the present disclosure. Based on the embodiments of the present disclosure, any other embodiments derived by those skilled in the art without creative efforts fall within the scope of the present disclosure.

[0031] The terms "first", "second", "third", and etc. in the present disclosure are used merely for descriptive purposes and should not be construed to indicate or imply relative importance or specify the quantity of the referenced technical features. Consequently, features defined by "first", "second", "third", or etc., may explicitly or implicitly include at least one of such features. The term "plurality" refers to at least two, such as two or three, unless explicitly stated otherwise. In the embodiments of the present disclosure, all directional indications (such as up, down, left, right, front, back, and etc.) are used merely to explain the relative positional relationship, movement, and etc., between components in a specific orientation (as shown in the figures). When the specific orientation changes, the directional indications will accordingly change as well. Besides, the terms "comprising", "including", and "having", as well as their variations, are intended to cover inclusive rather than exclusive arrangements. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0032] References to the term "embodiment" herein means that the specific features, structures, or characteristics described in connection with the embodiment may be included in at least one embodiment of the present disclosure. The term "embodiment" used in various locations of the specification does not necessarily refer to the same embodiment, nor does it imply a mutually exclusive independent or alternative embodiment. Those skilled in the art explicitly or implicitly understand that the embodiments described herein may be combined with other embodiments.

[0033] The present disclosure is described in detail below with reference to the figures and the embodiments.

[0034] As shown in FIG. 1, FIG. 1 is a schematic structural view of an aerosol generating system according to some embodiments of the present disclosure.

[0035] In some embodiment, an aerosol generating system is provided. The aerosol generating system includes an aerosol generating device 1 and an aerosol generating article 2 accommodated in the aerosol generating device 1. The aerosol generating device 1 is configured to heat and atomize the aerosol generating article 2 to generate an aerosol for a user to inhale. The aerosol generating device 1 may be applicable in fields such as medical, cosmetic, health care, electronic atomization, and etc. Specific structures and functions of the aerosol generating device 1 may refer to the following embodiments. The aerosol generating article 2 may be a solid substance, including one or more powders, granules, fragments, strips, or sheets of plant leaves, such as tobacco, vanilla leaves, tea leaves, mint leaves, or the like. In some embodiments, the solid substrate may include an additional volatile aromatic compound that is able to be released when the solid substrate is heated. In some embodiments, the aerosol generating article 2 may be a liquid substance or a paste substance, such as oils, medicinal liquids, or the like, which contains aromatic components.

[0036] As shown in FIG. 2, FIG. 2 is a schematic structural view of an aerosol generating device 1 according to some embodiments of the present disclosure.

[0037] In some embodiments, an aerosol generating device 1 is provided. The aerosol generating device 1 includes a heating assembly 10 and a power source assembly 20. The heating assembly 10 is configured to accommodate the aerosol generating article 2 and atomize the aerosol generating article 2 to generate an aerosol when the heating assembly 10 is powered. Specific structures and functions of the heating assembly 10 may refer to the heating assembly 10 in any one of the following embodiments. The power source assembly 20 is electrically connected to the heating assembly 10 and is configured to supply power to the heating assembly 10. In some embodiments, the power source assembly 20 may be a lithium-ion battery.

[0038] As shown in FIGS. 3 and 4, FIG. 3 is a schematic cross-sectional view of a heating assembly according to a first embodiment of the present disclosure, and FIG. 4 is a schematic perspective view of a heating assembly according to some embodiments of the present disclosure. In the first embodiment, a heating assembly 10 is provided. The heating assembly 10 includes an accommodating structure 11, a plurality of heating films 12, and a power supply assembly 13.

[0039] As shown in FIG. 3, the accommodating structure 11 includes a substrate 111 and a radiating layer 112. The substrate 111 is in shape of a hollow tube. The substrate 111 defines an accommodating chamber 110, a near-end opening, and a far-end opening. The near-end opening and the far-end opening are both communicated with the accommodating chamber 110 and are arranged in opposite to each other along a length direction C of the substrate 111. In the following, the near-end opening is defined on a first end a of the accommodating structure 11 and the far-end opening is defined on a second end b of the accommodating structure 11. The accommodating chamber 110 is configured to accommodate the aerosol generating article 2. The aerosol generating article 2 is enabled to be received in or be removed from the accommodating chamber 110 along the length direction C of the accommodating chamber 110 through the near-end opening. The near-end opening is an end of the heating assembly 10 that is closer to a mouthpiece. In some embodiments, the substrate 111 has a hollow tubular structure that encircles or defines the accommodating chamber 110. In some embodiments, an outer diameter of the substrate 111 is constant along the length direction C thereof. In some embodiments, the substrate 111 may be in shape of a hollow cylinder.

[0040] In some embodiments, the substrate 111 may be made of an insulating material. For example, the substrate 111 may be a quartz tube, a ceramic tube, or a mica tube, etc. In some embodiments, the substrate 111 is a transparent quartz tube that facilitates a transmission of the infrared light. Alternatively, the substrate 111 may be made of a non-insulating material, such as a stainless steel, a stainless aluminum, or other metals.

[0041] The radiating layer 112 is disposed on an inner surface of a sidewall of the substrate 111 and is configured to radiate infrared light when the radiating layer 112 is heated. The infrared light being radiated is then configured to heat and atomize the aerosol generating article 2 in the accommodating chamber 110. Since the infrared light has a certain degree of penetrability, does not require medium, and provides a relatively high heating efficiency, heating the aerosol generating article 2 through the infrared light as mentioned above may effectively improve a preheating efficiency of the aerosol generating article 2 and reduce a temperature difference between an interior of the aerosol generating article 2 and an exterior of the aerosol generating article 2, thereby ensuring an uniform roasting of the aerosol generating article 2 and reducing a risk of the aerosol generating article 2 being scorched due to a localized high temperature. In addition, since the radiating layer 112 is disposed on the inner surface of the substrate 111, the radiating layer 112 radiates the infrared light directly to the aerosol generating article 2 without passing through the substrate 111, thereby enhancing an infrared utilization efficiency.

[0042] The radiating layer 112 may be formed on the entire inner surface of the sidewall of the substrate 111 through methods such as a screen printing, a sputtering, a coating, or a printing, etc. In some embodiments, the radiating layer 112 may be an infrared layer that is made of a material with high infrared emissivity, such as at least one of a perovskite system, a spinel system, a carbide, a silicide, a nitride, an oxide, or a rare-earth material, etc.

[0043] As shown in FIGS. 3-5b, FIG. 5a is an exploded schematic view of the heating assembly shown in FIG. 4 from a first viewing angle, FIG. 5b is an exploded schematic view of the heating assembly shown in FIG. 4 from a second viewing angle. The plurality of heating films 12 are disposed on a side of the substrate 111 away from the radiating layer 112 and are spaced apart from each other along the length direction C of the accommodating structure 11. When the plurality of heating films 12 are powered, the plurality of heating films 12 are configured to generate thermal energy to heat the radiating layer 112, enabling the radiating layer 112 to be heated to radiate the infrared light. In some embodiments, the plurality of heating films 12 include a resistance material that releases Joule heat after being powered. For example, the plurality of heating films 12 may include a thick-film printed resistive layer, a thin-film printed resistive layer, or a nano-resistive layer, etc.

[0044] As shown in FIG. 3, when the substrate 111 is an insulating substrate 111, the plurality of heating films 12 are disposed on the surface of the side of the substrate 111 away from the radiating layer 112. The thermal energy generated by the plurality of heating films 12 is conducted through the substrate 111 to the radiating layer 112. It can be understood that in some embodiments, the plurality of heating films 12 are directly disposed on the surface of the accommodating structure 11. That is, the plurality of heating films 12 are directly in contact with the surface of the accommodating structure 11. In some embodiments, when the substrate 111 is a non-insulating substrate 111, a material of the substrate 111 includes a metal, such as a stainless steel. As shown in FIG. 6, FIG. 6 is a schematic cross-sectional view of a heating assembly 10 according to some embodiments of the present disclosure. A first insulating layer 113 that resists a high temperature is disposed on the surface of the substrate 111 away the radiating layer 112. In some embodiments, the plurality of heating films 12 are disposed on a surface of the first insulating layer 113 away from the substrate 111 to reduce a risk of short circuit between the plurality of heating films 12 and the substrate 111. In this case, the thermal energy generated by the plurality of heating films 12 is conducted sequentially through the first insulating layer 113 and the substrate 111 to the radiating layer 112, so as to heat the radiating layer 112. It can be understood that in some embodiments, the plurality of heating films 12 are disposed on the accommodating structure 11 through the first insulating layer 113. That is, the plurality of heating films 12 are indirectly in contact with the surface of the accommodating structure 11. In some embodiments, the first insulating layer 113 is an enamel layer.

[0045] In some embodiments, to enhance a heat utilization rate of the heating assembly 10 and further improve a heating efficiency of the aerosol generating article 2, as shown in FIG. 7, FIG. 7 is a schematic structural view illustrating that an aerosol generating article 2 is accommodated in an accommodating structure 11 according to some embodiments of the present disclosure. When the aerosol generating article 2 is accommodated in the accommodating chamber 110, the aerosol generating article 2 is directly in contact with an inner surface of a sidewall of the accommodating structure 11, e.g., a surface of the radiating layer 112. Thus, in addition to heating the aerosol generating article 2 through radiating the infrared light to the interior of the aerosol generating article 2, the thermal energy generated by the plurality of heating films 12 may be conducted through the accommodating structure 11, e.g., the radiating layer 112, to the aerosol generating article 2, thereby further enhancing the heat utilization rate, speeding up an atomization process, and increasing an aerosol generation rate.

[0046] In some embodiments, as shown in FIG. 8, FIG. 8 is a schematic structural view illustrating that an aerosol generating article 2 is accommodated in an accommodating structure 11 according to some other embodiments of the present disclosure. When the aerosol generating article 2 is accommodated in the accommodating chamber 110, the aerosol generating article 2 may be spaced apart from the inner surface of the sidewall of the accommodating structure 11, e.g., the radiating layer 112, to reduce a risk of the aerosol generating article 2 scratching or damaging the radiating layer 112. It can be understood that in some embodiments, the aerosol generating article 2 is heated mainly through the radiated infrared light. Furthermore, a surface of the plurality of heating films 12 and / or a surface of the radiating layer 112 may be coated with a protective layer. The protective layer may be an enamel layer. A thickness of the radiating layer 112 may range from 10 to 100 micrometers. In some embodiments, the thickness of the radiating layer 112 is in a range of 20 to 40 micrometers. In this case, the radiating layer 112 may be formed through a thick-film printing. A material of the radiating layer 112 may include at least one of a black silicon, a cordierite, a transition metal oxide-based spinel, a rare earth oxide, an ion co-doped perovskite, a silicon carbide, a zircon, and a boron nitride, etc. Alternatively, the thickness of the radiating layer 112 may range from 1 to 10 micrometers. In some embodiments, the thickness of the radiating layer 112 is in a range of 1 to 5 micrometers. In this case, the radiating layer 112 is a thin-film coating film. The material of the radiating layer 112 may include a chromium carbide (CrC) film, a titanium carbo-nitride (TiCN) film, or a diamond-like carbon (DLC) film, etc.

[0047] As shown in FIG. 9a, FIG. 9a is a schematic view illustrating that the plurality of heating films and the power supply assembly shown in FIG. 4 unfold along a circumferential direction of the accommodating structure 11. Each heating film 12 includes at least one heating track. In some embodiments, each heating film 12 includes at least two heating tracks 121, 122 connected in parallel. Each heating track 121 / 122 extends linearly along the length direction C (as shown in FIG. 13 below) of the accommodating structure 11 or the circumferential direction (as shown in FIG. 9a) of the accommodating structure 11. It can be understood that a length of the linear heating track 121 is much greater than a width of the linear heating track 121.

[0048] In some embodiments, as shown in FIG. 9a, at least one of the two heating tracks 121, 122 is a curved track. In some embodiments, the at least two heating tracks 121, 122 in each heating film 12 are all curved tracks. The curved track may be a U-shaped track or an S-shaped track. Obviously, in some other embodiments, each heating track 121, 122 may include any other irregularly bent track, such as a combination of an S-shaped track and a U-shaped track, which is not limited herein.

[0049] As shown in FIGS. 4 and 9a, the power source assembly 13 includes at least three electrodes. Each of the at least three electrodes is coupled to the power source assembly 20. Every two of the at least three electrodes form an independent power supply group and are electrically connected to a corresponding one of the plurality of heating films 12, so as to supply power to the corresponding one of the plurality of heating films 12. In this way, both a power and a heating time of each power supply group may be independently controlled by an electronic control panel of the aerosol generating device 1, which enables the plurality of heating films 12 that are spaced apart from each other to receive electrical power from the power source assembly 20 based on the power supply groups in an independent manner, thereby forming multiple heating regions on the accommodating structure 11 along the length direction C of the accommodating structure 11, allowing for a segmented heating along the length direction C of the heating assembly 10. Thus, the heating assembly 10 is enabled to control a heating temperature of each heating region based on an actual temperature field requirement, ensuring a continuous generation of the aerosol and a consistent taste before and after user inhalation, and providing an avoidance of a phenomenon that a localized temperature becomes too high or too low. Each heating film 12 is connected to corresponding two of the at least three electrodes. Each of the at least three electrodes may be made of a highly conductive metal material such as a silver, a gold, a copper, or an alloy that includes the silver, the gold, and the copper, etc.

[0050] In some embodiments, as shown in FIG. 4, the at least three electrodes are disposed on the first end a and / or the second end b of the accommodating structure 11. The at least three electrodes that are configured to be coupled to the power source assembly 20 are disposed on the first end a and / or the second end b of the accommodating structure 11, not only enabling the at least three electrodes to supply power to the plurality of heating films 12 in the independent manner to realize the segmented heating function of the heating assembly 10, but also reducing the need for setting an additional electrode to be coupled to the power source in a middle region of the accommodating structure 11 along the length direction C thereof. In this way, a risk of the additional electrode in the middle region conducting thermal heat to an outside when the additional electrode is in contact with other metals may be effectively reduced, which not only reduces an energy consumption of the heating assembly 10 but also ensures a temperature consistency between the middle region and other regions of the accommodating structure 11 that are adjacent to the middle region, thereby improving an atomization effect of the aerosol generating article 2 corresponding to the middle region of the accommodating structure 11 and enhancing the user's inhalation experience or inhalation taste.

[0051] In some embodiments, as shown in FIGS. 4-9a, the number of the plurality of heating films 12 is two. The plurality of heating films 12 include a first heating film 12a and a second heating film 12b. The first heating film 12a and the second heating film 12b are spaced apart from each other along the length direction C of the accommodating structure 11. The first heating film 12a is disposed near the first end a of the accommodating structure 11. The second heating film 12b is disposed near the second end b of the accommodating structure 11. In some embodiments, the first heating film 12a and the second heating film 12b are disposed on opposite sides of a central cross-section of the accommodating structure 11 and are symmetrically disposed with respect to the central cross-section. The central cross-section of the accommodating structure 11 may refer to a transverse section of the accommodating structure 11. The transverse section passes through a midpoint of the accommodating structure 11 along the length direction C of the accommodating structure 11.

[0052] In some embodiments, as shown in FIG. 9a, the first heating film 12a and / or the second heating film 12b includes two heating tracks that are spaced apart from each other. In the following, the first heating film 12a, which includes the first heating track 121 and the second heating track 122, is taken as an example. The first heating track 121 extends along the circumferential direction of the accommodating structure 11 as a U-shaped track. The U-shaped track includes at least one U-shaped structure that opens in a direction substantially parallel to the length direction C of the accommodating structure 11. The second heating track 122 includes a gate-like structure that surrounds an outer contour of the first heating track 121.

[0053] In some embodiments, as shown in FIG. 9b, FIG. 9b is a schematic structural view of the first heating film, the first electrode, and the second electrode shown in FIG. 9a. The second heating track 122 includes a first part 122a, a second part 122b, and a third part 122c. One end of the first part 122a is electrically connected to the first electrode 131. The other end of the first part 112a is connected to the second part 122b. One end of the third part 122c is electrically connected to the second electrode 132. The other end of the third part 122c is electrically connected to the second part 122b.

[0054] In some embodiments, along the circumferential direction of the accommodating structure 11, the first part 122a of the second heating track 122 is disposed on one side of the first heating track 121, and the third part 122c of the second heating track 122 is disposed on the other side of the first heating track 121. The third part 122c of the second heating track 122 extends along the length direction C of the accommodating structure 11 toward the first end a linearly.

[0055] The first part 122a of the second heating track 122 is a U-shaped track extending along the circumferential direction of the accommodating structure 11. In some embodiments, the first part 122a and the first heating track 121 are disposed on a same height along the length direction of the accommodating structure 11. Each of the first part 122a and the first heating track 121 is a U-shaped track. Each U-shaped structure of the U-shaped track shares a same size.

[0056] The second part 122b of the second heating track 122 is disposed on a side of the first heating track 121 that is close to a central region of the accommodating structure 11. The second part 122b extends linearly along the circumferential direction of the accommodating structure 11 and is constructed into an arc structure.

[0057] Specific structures of the second heating film 12b are similar to the structure of the first heating film 12a in that the second heating film 12b includes two heating tracks spaced apart from each other. Those skilled in the art may understand that the third part 122c of the second heating track 122 in the second heating film 12b extends toward the second end b of the accommodating structure 11.

[0058] As shown in FIG. 9a, the power source assembly 13 includes four electrodes, including the first electrode 131, the second electrode 132, a third electrode 133, and a fourth electrode 134. The first electrode 131 and the second electrode 132 are disposed on the first end a of the accommodating structure 11. Each of the first electrode 131 and the second electrode 132 is electrically connected to the first heating film 12a. The third electrode 133 and the fourth electrode 134 are disposed on the second end b of the accommodating structure 11. Each of the third electrode 133 and the fourth electrode 134 is electrically connected to the second heating film 12b.

[0059] In some embodiments, both ends of the first heating track 121 of the first heating film 12a extend to a position near the first end a of the accommodating structure 11, enabling the first heating track 121 of the first heating film 12a to be electrically connected to each of the first electrode 131 and the second electrode 132. Both ends of the second heating track 122 of the first heating film 12a extend to another position near the first end a of the accommodating structure 11, enabling the second heating track 122 of the first heating film 12a to be electrically connected to each of the first electrode 131 and the second electrode 132. In this way, each of multiple heating tracks of the first heating film 12a is enabled to be electrically connected to both the first electrode 131 and the second electrode 132.

[0060] Both ends of the first heating track 121 of the second heating film 12b extend to a position near the second end b of the accommodating structure 11, enabling the first heating track 121 of the second heating film 12b to be electrically connected to each of the third electrode 133 and the fourth electrode 134. Both ends of the second heating track 122 of the second heating film 12b extend to another position near the second end b of the accommodating structure 11, enabling the second heating track 122 of the second heating film 12b to be electrically connected to each of the third electrode 133 and the fourth electrode 134. In this way, each of the multiple heating tracks of the second heating film 12b is enabled to be electrically connected to both the third electrode 133 and the fourth electrode 134.

[0061] In some embodiments, as shown in FIG. 9a, each of the first electrode 131, the second electrode 132, the third electrode 133, and the fourth electrode 134 includes a coupling part 135a and a connecting part 135b. The coupling part 135a is disposed on an end of the accommodating structure 11 and is configured to be coupled to the power source assembly 20, to supply power to a corresponding one of the plurality of heating films 12. In some embodiments, the coupling part 135a is constructed into an arc structure extending along the circumferential direction of the accommodating structure 11. The coupling parts 135a of any two electrodes disposed on a same end of the accommodating structure 11 are spaced apart from each other.

[0062] Since the coupling part 135a coupled to the power source assembly 20 is disposed on the end of the accommodating structure 11, no additional coupling part is disposed in the middle region of the accommodating structure 11 along the length direction C thereof, which effectively reduces a risk of the coupling part in the middle region being in contact with other metals to conduct thermal heat to the outside, thereby not only reducing the energy consumption of the heating assembly 10 but also ensuring the temperature consistency between the middle region and other regions of the accommodating structure 11 that are adjacent to the middle region, and improving the atomization effect of the aerosol generating article 2 corresponding to the middle region of the accommodating structure 11.

[0063] The connecting part 135b is electrically connected to the coupling part 135a and protrudes in a direction away from the coupling part 135a connected thereto along the length direction C of the accommodating structure 11, enabling the connecting part 135b to be electrically connected to an end of each heating track of an adjacent one of the plurality of heating films 12.

[0064] Obviously, in some other embodiments, as shown in FIG. 10, FIG. 10 is a schematic view illustrating that a plurality of heating films and a power supply assembly unfold according to some other embodiments of the present disclosure. The coupling part 135a of each of the first electrode 131, the second electrode 132, the third electrode 133, and the fourth electrode 134 may be disposed on a same end of the accommodating structure 11. For example, the coupling parts 135a of each of the first electrode 131, the second electrode 132, the third electrode 133, and the fourth electrode 134 may be disposed on the second end b of the accommodating structure 11. In the above embodiments, the connecting part 135b of each of the first electrode 131 and the second electrode 132 may extend toward the first end a of the accommodating structure 11 and be electrically connected to an end of each of the multiple heating tracks of the first heating film 12a. Obviously, in some embodiments, both ends of each heating track of the first heating film 12a extend along the circumferential direction of the accommodating structure 11, which is not limited herein.

[0065] In some other embodiments, as shown in FIGS. 11-13, FIG. 11 is a schematic perspective view of a heating assembly according to some other embodiments of the present disclosure, FIG. 12 is an exploded schematic view of the heating assembly shown in FIG. 11, and FIG. 13 is a schematic view illustrating that the plurality of heating films and the power supply assembly shown in FIG. 11 unfold along the circumferential direction of the accommodating structure. Some embodiments provide another type of heating assembly 10, which differs from the heating assembly 10 provided by the first embodiment above in that the power source assembly 13 includes a first electrode 136, a second electrode 137, and a third electrode 138.

[0066] As shown in FIG. 11, the first electrode 136 is disposed on the first end a of the accommodating structure 11 and is electrically connected to the first heating film 12a. The first electrode 136 has an arc structure extending along the circumferential direction of the accommodating structure 11. The second electrode 137 is disposed on the second end b of the accommodating structure 11 and is electrically connected to the second heating film 12b. The second electrode 137 has an arc structure extending along the circumferential direction of the accommodating structure 11.

[0067] The third electrode 138 is disposed on a same end of the accommodating structure 11 with the first electrode 136 or the second electrode 137 and is electrically connected to each of the first heating film 12a and the second heating film 12b. It can be understood that one of the first electrode 136 and the third electrode 138 is electrically connected to a cathode of the power source, and the other one of the first electrode 136 and the third electrode 138 is electrically connected to an anode of the power source. Both the first electrode 136 and the second electrode 137 are electrically connected to either the cathode or the anode of the power source.

[0068] As shown in FIG. 13, the third electrode 138 includes a common coupling part 139a and a common connecting part 139b. The common coupling part 139a is disposed on a same end of the accommodating structure 11 with the first electrode 136 or the second electrode 137 and is configured to be coupled with the power source assembly 20. In some embodiments, the common coupling part 139a may be disposed on the second end b of the accommodating structure 11. The common connecting part 139b is electrically connected to the common coupling part 139a. The common connecting part 139b extends along the length direction C of the accommodating structure 11 away from the common coupling part 139a, to be electrically connected to each of the first heating film 12a and the second heating film 12b. In some embodiments, the common connecting part 139b extends to a position between the first heating film 12a and the second heating film 12b.

[0069] In the embodiments above, as shown in FIG. 13, the multiple heating tracks of each of the first heating film 12a and the second heating film 12b are curved tracks extending along the length direction C of the accommodating structure 11. For example, each of the first heating track 121 of the first heating film 12a, the second heating track 122 of the first heating film 12a, the first heating track 121 of the second heating film 12b, and the second heating track 122 of the second heating film 12b is a U-shaped track extending along the length direction of the accommodating structure 11. The U-shaped track includes at least one U-shaped structure that opens in a direction substantially perpendicular to the length direction C of the accommodating structure 11.

[0070] In some embodiments, the first heating track 121 of the first heating film 12a and the second heating track 122 of the first heating film 12a are symmetrically disposed with respect to a central axis M of a width direction of the first heating film 12a; and / or the first heating track 121 of the second heating film 12b and the second heating track 122 of the second heating film 12b are symmetrically disposed with respect to a central axis N of the width direction of the second heating film 12b.

[0071] In some embodiments, as shown in FIG. 13, the first heating film 12a includes multiple heating tracks. A first end of each heating track of the first heating film 12a is connected together and further electrically connected to the first electrode 136. A second end of each heating track of the first heating film 12a is connected together and further electrically connected to an end of the common connecting part 139b that is away from the common coupling part 139a. For example, the first end of the first heating track 121 of the first heating film 12a and the first end of the second heating track 122 of the first heating film 12a are connected together. The second end of the first heating track 121 of the first heating film 12a and the second end of the second heating track 122 of the first heating film 12a are connected together.

[0072] In some embodiments, the first heating film 12a may further include a first connecting part 123. The first connecting part 123 extends along the circumferential direction of the accommodating structure 11. The first end of the first heating track 121 of the first heating film 12a and the first end of the second heating track 122 of the first heating film 12a are respectively connected to the first connecting part 123, thereby being further electrically connected to the first electrode 136 through a part of the first connecting part 123 that protrudes toward the first electrode 136.

[0073] In some embodiments, the first heating film 12a may further include a second connecting part 124. The second connecting part 124 extends along the circumferential direction of the accommodating structure 11. The second end of the first heating track 121 of the first heating film 12a and the second end of the second heating track 122 of the first heating film 12a are respectively connected to the second connecting part 124, thereby being further electrically connected to the end of the common connecting part 139b that is away from the common coupling part 139a.

[0074] Similarly, the second heating film 12b may include a third connecting part 125. The third connecting part 125 extends along the circumferential direction of the accommodating structure 11. The first end of the first heating track 121 of the second heating film 12b and the first end of the second heating track 122 of the second heating film 12b are respectively connected to the third connecting part 125, thereby being further electrically connected to the second electrode 137 through a part of the third connecting part 125 that protrudes toward the second electrode 137.

[0075] In some embodiments, the second heating film 12b may further include a fourth connecting part 126. The fourth connecting part 126 extends along the circumferential direction of the accommodating structure 11. The second end of the first heating track 121 of the second heating film 12b and the second end of the second heating track 122 of the second heating film 12b are respectively connected to the fourth connecting part 126, thereby being further electrically connected to the end of the common connecting part 139b that is away from the common coupling part 139a. The fourth connecting part 126 and the second connecting part 124 are disposed adjacently along the length direction C of the accommodating structure 11.

[0076] Obviously, in some other embodiments, as shown in FIG. 14, FIG. 14 is a schematic view illustrating that a plurality of heating films and a power supply assembly unfold according to still some other embodiments of the present disclosure. The first electrode 136 or the second electrode 137 may include a coupling part and a connecting part. The coupling part of the first electrode 136, the coupling part of the second electrode 137, and the common coupling part 139a of the third electrode 138 may all be disposed on a same end of the accommodating structure 11. For example, the coupling part of the first electrode 136, the coupling part of the second electrode 137, and the common coupling part 139a of the third electrode 138 may all be disposed on the second end b of the accommodating structure 11. In the above embodiments, the connecting part of the first electrode 136 may extend toward the first end a of the accommodating structure 11 and further be electrically connected to the first connecting part 123 of the first heating film 12a.

[0077] The heating assembly 10 provided by the two previously mentioned embodiments includes the accommodating structure 11 and the plurality of heating films 12. The plurality of heating films 12 are spaced apart from each other along the length direction C of the accommodating structure 11. Each of the plurality of heating films 12 is disposed linearly. The plurality of heating films 12 are configured to heat the accommodating structure 11 when the plurality of heating films 12 are powered, which enables the accommodating structure 11 to be heated to radiate the infrared light. The infrared light is further configured to heat and atomize the aerosol generating article 2 that is accommodated in the accommodating structure 11. Since the infrared light has a certain degree of penetrability, does not require medium, and provides a relatively high heating efficiency, heating the aerosol generating article 2 through the infrared light may effectively improve the preheating efficiency of the aerosol generating article 2 and reduce the temperature difference between the interior of the aerosol generating article 2 and the exterior of the aerosol generating article 2, thereby ensuring the uniform roasting of the aerosol generating article 2 and reducing a risk of the aerosol generating article 2 being scorched due to a localized high temperature. In addition, the power source assembly 13 that includes at least three electrodes is provided. Every two of the at least three electrodes as a group are electrically connected to a corresponding one of the plurality of heating films 12, which enables each group of electrodes to supply power to a corresponding one of the plurality of heating films 12, thereby further enabling the plurality of heating films 12 that are spaced apart from each other to receive electrical power from the power source assembly 20 based on the corresponding group of electrodes in an independent manner, forming multiple heating regions on the accommodating structure 11 along the length direction C of the accommodating structure 11, and allowing for a segmented heating of the heating assembly 10. Thus, the heating assembly 10 is enabled to control a heating temperature of each heating region based on an actual temperature field requirement, ensuring a continuous generation of the aerosol and a consistent taste before and after user inhalation, and providing an avoidance of a phenomenon that a localized temperature becomes too high or too low. Besides, the at least three electrodes that are configured to be coupled to the power source assembly 20 are disposed on the first end a and / or the second end b of the accommodating structure 11, not only enabling the at least three electrodes to supply power to the plurality of heating films 12 in the independent manner to realize the segmented heating function of the heating assembly 10, but also reducing the need for setting an additional electrode to be coupled to the power source in the middle region of the accommodating structure 11 along the length direction C thereof. In this way, the risk of the additional electrode in the middle region conducting thermal heat to the outside when the additional electrode is in contact with other metals may be effectively reduced, which not only reduces the energy consumption of the heating assembly 10 but also ensures the temperature consistency between the middle region and other regions of the accommodating structure 11 that are adjacent to the middle region, thereby improving the atomization effect of the aerosol generating article 2 corresponding to the middle region of the accommodating structure 11 and enhancing the user's inhalation experience or inhalation taste.

[0078] In a second embodiment, as shown in FIG. 15, FIG. 15 is a schematic cross-sectional view of a heating assembly 10 according to the second embodiment of the present disclosure. The second embodiment provides a second type of heating assembly 10. The second type of heating assembly 10 is different from the heating assembly 10 provided by the first embodiment in that the radiating layer 112 is disposed on an outer surface of the side wall of the substrate 111.

[0079] In the second embodiment, as shown in FIG. 15, when the radiating layer 112 is an insulating radiating layer 112, the plurality of heating films 12 are disposed on a surface of a side of the radiating layer 112 away from the substrate 111. When the plurality of heating films 12 are powered, the thermal energy generated by the plurality of heating films 12 is directly conducted to the radiating layer 112. The radiating layer 112 is heated to generate infrared light. The infrared light penetrates the substrate 111 that is transparent and enters the accommodating chamber 110 to heat the aerosol generating article 2 accommodated in the accommodating chamber 110. In the second embodiment, the aerosol generating article 2 may be directly in contact with the transparent substrate 111, enabling the thermal energy from the substrate 111 to be directly conducted to the aerosol generating article 2 for heating. Alternatively, the aerosol generating article 2 may be spaced apart from the substrate 111.

[0080] When the radiating layer 112 is made of a non-insulating material, as shown in FIG. 16, FIG. 16 is a schematic cross-sectional view of a heating assembly according to some other embodiments of the present disclosure. To reduce a risk of short circuit of the plurality of heating films 12, a second insulating layer 114 is disposed on a surface of the radiating layer 112 away from the substrate 111. The second insulating layer 114 is disposed between the radiating layer 112 and the plurality of heating films 12.

[0081] In a third embodiment, as shown in FIG. 17, FIG. 17 is a schematic cross-sectional view of a heating assembly according to the third embodiment of the present disclosure. The third embodiment provides yet another type of heating assembly 10. The yet another type of heating assembly 10 is different from the heating assembly 10 provided in the above embodiments in that the accommodating structure 11 includes the substrate 111. The plurality of heating films 12 are disposed on an outer surface of a sidewall of the substrate 111.

[0082] The substrate 111 is in shape of a hollow tube. The substrate 111 includes a main body and an infrared radiation material dispersed within the main body. The main body defines the accommodating chamber 110 and the near-end opening communicated with the accommodating chamber 110, to accommodate the aerosol generating article 2. When the substrate 111 is heated, the substrate 111 radiates infrared light to heat the aerosol generating article 2. It can be understood that in the third embodiment, the substrate 111 itself radiates the infrared light when the substrate 111 is heated, and no additional infrared layer is disposed on the surface of the substrate 111. In some embodiments, the substrate 111 may be a quartz tube.

[0083] In some embodiments, to increase the amount of infrared light being radiated and the heating speed, a radiating infrared layer may further be disposed on the surface of the substrate 111, which may refer to the embodiments above and will not be repeated herein.

[0084] The above are only some embodiments of the present disclosure and may not limit the scope of the present disclosure. Any equivalent transformation in structures or process based on the description and drawings of the present disclosure, or a direct or indirect application of the description and drawings of the present disclosure in other related technical fields, may fall within the scope of the present disclosure for the same reason.

Claims

1. A heating assembly, comprising: an accommodating structure, comprising a near-end opening, and configured to accommodate an aerosol generating article through the near-end opening and radiate an infrared light to heat the aerosol generating article when the accommodating structure is heated; a plurality of heating films, spaced apart from each other on the accommodating structure along a length direction of the accommodating structure, and configured to heat the accommodating structure when the plurality of heating films are powered, wherein each of the plurality of heating films is disposed linearly; and a power supply assembly, comprising at least three electrodes, wherein the at least three electrodes are configured to be coupled to a power source assembly, the at least three electrodes are disposed on a first end and / or a second end of the accommodating structure, and every two of the at least three electrodes as a group are electrically connected to a corresponding one of the plurality of heating films to supply power to the corresponding one of the plurality of heating films.

2. The heating assembly as claimed in claim 1, wherein each of the plurality of heating films comprises at least one heating track.

3. The heating assembly as claimed in claim 2, wherein each of the plurality of heating films comprises at least two heating tracks connected in parallel.

4. The heating assembly as claimed in claim 3, wherein at least a part of the at least two heating tracks is a curved track.

5. The heating assembly as claimed in claim 4, wherein the curved track is a U-shaped track or an S-shaped track.

6. The heating assembly as claimed in claim 1, wherein the plurality of heating films comprise a first heating film and a second heating film; the power supply assembly comprises a first electrode, a second electrode, a third electrode, and a fourth electrode; the first electrode and the second electrode are disposed on the first end of the accommodating structure, and each of the first electrode and the second electrode is electrically connected to the first heating film; and the third electrode and the fourth electrode are disposed on the second end of the accommodating structure, and each of the third electrode and the fourth electrode is electrically connected to the second heating film.

7. The heating assembly as claimed in claim 6, wherein the first heating film comprises more than one heating track, both ends of each heating track of the first heating film extend to a part of the accommodating structure that is close to the first end, enabling one end of each heating track of the first heating film to be electrically connected to the first electrode and the other end of each heating track of the first heating film to be electrically connected to the second electrode; and the second heating film comprises more than one heating track, both ends of each heating track of the second heating film extend to a part of the accommodating structure that is close to the second end, enabling one end of each heating track of the second heating film to be electrically connected to the third electrode and the other end of each heating track of the second heating film to be electrically connected to the fourth electrode.

8. The heating assembly as claimed in claim 7, wherein each of the first electrode, the second electrode, the third electrode, and the fourth electrode comprises both a coupling part and a connecting part; the coupling part is disposed on an end of the accommodating structure and is configured to be coupled to the power source assembly, to supply power to a corresponding one of the plurality of heating films; and the connecting part is electrically connected to the coupling part and extends away from the coupling part along the length direction of the accommodating structure, enabling the connecting part to be electrically connected to an end of each heating track of an adjacent one of the plurality of heating films.

9. The heating assembly as claimed in claim 8, wherein the coupling part has an arc structure extending along a circumferential direction of the accommodating structure.

10. The heating assembly as claimed in claim 7, wherein each one of the plurality of heating films comprises a first heating track and a second heating track that are spaced apart from each other, the first heating track is a curved track extending along a circumferential direction of the accommodating structure, and the second heating track surrounds an outer contour of the first heating track.

11. The heating assembly as claimed in claim 10, wherein the second heating track comprises a first part, a second part, and a third part that are sequentially connected to each other; along the circumferential direction of the accommodating structure, the first part is disposed on one side of the first heating track, and the third part is disposed on the other side of the first heating track; the first part is a curved track extending along the circumferential direction of the accommodating structure, and the third part is a straight track extending along the length direction of the accommodating structure; and the second part is disposed on a side of the first heating track that is close to a central region of the accommodating structure, and the second part is a straight track extending along the circumferential direction of the accommodating structure.

12. The heating assembly as claimed in claim 11, wherein each of the first part and the first heating track is a U-shaped track that comprises at least one U-shaped structure, and each U-shaped structure shares a same shape.

13. The heating assembly as claimed in claim 1, wherein the plurality of heating films comprise a first heating film and a second heating film; the power supply assembly comprises a first electrode, a second electrode, and a third electrode; and the first electrode is disposed on the first end of the accommodating structure and is electrically connected to the first heating film, the second electrode is disposed on the second end of the accommodating structure and is electrically connected to the second heating film, the third electrode is disposed on a same end of the accommodating structure with the first electrode or the second electrode and is electrically connected to each of the first heating film and the second heating film.

14. The heating assembly as claimed in claim 13, wherein the first electrode and / or the second electrode has an arc structure extending along a circumferential direction of the accommodating structure; the third electrode comprises a common coupling part and a common connecting part, the common coupling part is disposed on a same end of the accommodating structure with the first electrode or the second electrode and is configured to be coupled to the power source assembly; and the common connecting part is electrically connected to the common coupling part and extends away from the common coupling part along the length direction of the accommodating structure, enabling the common connecting part to be electrically connected to each of the first heating film and the second heating film.

15. The heating assembly as claimed in claim 14, wherein each of the first heating film and the second heating film comprises more than one heating track, each heating track of the first heating film and each heating track of the second heating film are curved tracks extending along the length direction of the accommodating structure.

16. The heating assembly as claimed in claim 15, wherein the first heating film comprises a first connecting part and a second connecting part, a first end of each heating track of the first heating film is connected to the first connecting part, enabling each heating track of the first heating film to be electrically connected to the first electrode through a part of the first connecting part; a second end of each heating track of the first heating film is connected to the second connecting part, enabling each heating track of the first heating film to be electrically connected to the third electrode through a part of the second connecting part; and / or the second heating film comprises a third connecting part and a fourth connecting part, a first end of each heating track of the second heating film is connected to the third connecting part, enabling each heating track of the second heating film to be electrically connected to the second electrode through a part of the third connecting part; a second end of each heating track of the second heating film is connected to the fourth connecting part, enabling each heating track of the second heating film to be electrically connected to the third electrode through a part of the fourth connecting part.

17. The heating assembly as claimed in claim 1, wherein the accommodating structure further comprises: a substrate, having a hollow tubular shape, and configured to accommodate the aerosol generating article; and a radiating layer, disposed on an inner surface of a sidewall of the substrate, and configured to radiate infrared light to heat the aerosol generating article when the radiating layer is heated, wherein the plurality of heating films are disposed on a side of the substrate away from the radiating layer.

18. The heating assembly as claimed in claim 1, wherein the accommodating structure further comprises: a substrate, having a hollow tubular shape, and configured to accommodate the aerosol generating article; and a radiating layer, disposed on an outer surface of a sidewall of the substrate, and configured to radiate infrared light to heat the aerosol generating article when the radiating layer is heated, wherein the plurality of heating films are disposed on a side of the radiating layer away from the substrate.

19. The heating assembly as claimed in claim 1, wherein the accommodating structure further comprises: a substrate, having a hollow tubular shape, comprising a main body and an infrared radiation material dispersed within the main body, and configured to accommodate the aerosol generating article and radiate infrared light to heat the aerosol generating article when the substrate is heated, wherein the plurality of heating films are disposed on an outer surface of a sidewall of the substrate.

20. The heating assembly as claimed in claim 17, wherein the substrate is a transparent substrate.

21. An aerosol generating device, comprising: the heating assembly as claimed in any one of claims 1-20; and a power source assembly, electrically connected to the heating assembly and configured to supply power to the heating assembly.

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