Heater and manufacturing method thereof, aerosol generating device

Abstract

The heater (11), its manufacturing method, and aerosol generating device (100) are disclosed. The heater (11) includes a substrate (111), an electric heating film layer (112) provided on the surface of the substrate (111), and a conductive element configured to supply power to the electric heating film layer (112) so that the flow direction of current in the electric heating film layer (112) extends in the axial direction of the substrate (111), and the conductive element includes at least one electrode (113, 114) extending in the axial direction of the substrate (111) and spaced apart from the electric heating film layer (112). By supplying power to the electrically heated membrane layer (112) via at least one electrode (113, 114) extending in the axial direction of the substrate (111) and spaced apart from the electrically heated membrane layer (112) so that the flow direction of the current in the electrically heated membrane layer (112) extends in the axial direction of the substrate (111), the resistance of the electrically heated membrane layer (112) can be reduced, the heating rate of the aerosol-forming substrate can be increased, and the user experience can be improved.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority to a Chinese patent application filed with the China Patent Office on December 8, 2022, bearing application number 202211573350.8 and entitled "Heater and manufacturing method thereof, aerosol generating device," the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of electronic atomization, and in particular to a heater and its manufacturing method, and an aerosol generating device. [Background technology]

[0003] Smoking articles, such as cigarettes and cigars, burn tobacco leaves to produce vapor during use. As an alternative to these tobacco-burning products, efforts have been made to produce products that release compounds without combustion. One example of such a product is the so-called heat-not-burn product, which releases compounds by heating, rather than burning, tobacco leaves.

[0004] The problems existing in conventional aerosol generating devices are that the resistance of the electrically heated membrane layer is high, the heating rate of the aerosol-forming substrate is slow, and the user experience is poor. Summary of the Invention [Problem to be solved by the invention]

[0005] The present application provides a heater, a manufacturing method thereof, and an aerosol generating device to solve the problems existing in conventional aerosol generating devices, such as a high resistance value of the electrically heated film layer and a slow heating rate of the aerosol-forming substrate. [Means for solving the problem]

[0006] In one aspect of the present application, a heater arranged to heat an aerosol-forming substrate in an aerosol-generating product to generate an aerosol, comprising: a substrate; an electric heating film layer provided on the surface of the substrate; a conductive element configured to supply power to the electrically heated film layer such that a flow direction of current in the electrically heated film layer extends in an axial direction of the substrate; The conductive element provides a heater that extends axially of the substrate and includes at least one electrode spaced apart from the electrically heated membrane layer.

[0007] In another aspect of the present application, the spacing between the electrode and the electrically heated membrane layer may include: coating the conductive element and the electric heating film layer on a surface of the substrate, and then removing a portion of the electric heating film layer adjacent to the electrode from the coated electric heating film layer; Coating an electric heating film layer on a surface of a substrate, then removing the electric heating film layer on a portion of the surface, and finally coating a conductive element partially on the surface of this portion; coating a conductive element partially on a first partial surface of the substrate and an electric heating film layer entirely on a second partial surface of the substrate, or coating a conductive element entirely on the first partial surface of the substrate and an electric heating film layer partially on the second partial surface of the substrate, or coating a conductive element partially on the first partial surface of the substrate and an electric heating film layer partially on the second partial surface of the substrate; coating a conductive element on a first partial surface of the substrate; and coating an electric heating film layer on a second partial surface of the substrate, the first partial surface and the second partial surface being spaced apart.

[0008] In another aspect of the present application, a housing assembly; a heater disposed within the housing assembly; and a battery cell for providing power. [Effects of the Invention]

[0009] According to the heater and manufacturing method thereof, and the aerosol generating device provided in the present application, power is supplied to the electric heating film layer through at least one electrode extending in the axial direction of the substrate and spaced apart from the electric heating film layer so that the flow direction of the current in the electric heating film layer extends in the axial direction of the substrate, thereby reducing the resistance of the electric heating film layer, improving the heating rate of the aerosol-forming substrate, and improving the user experience. [Brief explanation of the drawings]

[0010] One or more embodiments are illustratively described by corresponding drawing figures, but these illustrative descriptions are not intended to be limiting of the embodiments, and elements in the drawings with the same reference numerals are similar elements, and unless otherwise specified, the figures in the drawings are not to scale.

[0011] [Figure 1] 1 is a schematic diagram of an aerosol generating device provided in an embodiment of the present application. [Figure 2] 1 is an exploded schematic view of an aerosol generating device provided in an embodiment of the present application. FIG. [Figure 3] FIG. 2 is a schematic diagram of a first type of heater provided in an embodiment of the present application. [Figure 4] 1 is a planar development schematic diagram of a first type heater provided in an embodiment of the present application. FIG. [Figure 5] 1 is a schematic diagram of a manufacturing method for a first type heater provided in an embodiment of the present application. FIG. [Figure 6] FIG. 2 is a schematic diagram of a second type of heater provided in an embodiment of the present application. [Figure 7] FIG. 2 is a planar development schematic view of a second type of heater provided in an embodiment of the present application. [Figure 8] FIG. 2 is a schematic diagram of a third type of heater provided in an embodiment of the present application. [Figure 9] FIG. 10 is a planar development schematic view of a third type heater provided in an embodiment of the present application. [Figure 10]FIG. 10 is a schematic diagram of a fourth type of heater provided in an embodiment of the present application. [Figure 11] FIG. 10 is a planar development schematic view of a fourth type heater provided in an embodiment of the present application. [Figure 12] FIG. 10 is a schematic diagram of a fifth type of heater provided in an embodiment of the present application. [Figure 13] FIG. 10 is a planar development schematic view of a fifth type heater provided in an embodiment of the present application. [Figure 14] FIG. 10 is a planar development schematic diagram of a sixth type heater provided in an embodiment of the present application. [Figure 15] FIG. 10 is a schematic diagram of a seventh type heater provided in an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0012] In order to facilitate understanding of the present application, the present application will be described in more detail below with reference to the drawings and specific embodiments. It should be noted that when an element is described as being "fixed" to another element, it may be directly located on the other element, or there may be one or more intervening elements therebetween. When an element is described as being "connected" to another element, it may be directly connected to the other element, or there may be one or more intervening elements therebetween. The terms "upper," "lower," "left," "right," "inner," "outer," and similar terms used herein are for illustrative purposes only.

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. As used herein, the terms used in the specification of this application are merely for describing the purpose of specific embodiments and are not intended to limit the scope of this application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0014] 1 and 2 show an aerosol generating device 100 provided in an embodiment of the present application, and the aerosol generating device 100 includes a housing assembly 6 and a heater 11 provided in the housing assembly 6.

[0015] The housing assembly 6 includes an outer housing 61, a fixed housing 62, a base, and a bottom cover 64, and the fixed housing 62 and the base are both fixed within the outer housing 61, where the base is used to fix the heater 11 and is provided within the fixed housing 62, and the bottom cover 64 is provided at one end of the outer housing 61 and is hung on the outer housing 61.

[0016] The base includes a base 15 provided at the proximal end of the heater 11 and a base 13 provided at the distal end of the heater 11, and both the base 15 and the base 13 are provided within a fixed housing 62, an intake pipe 641 is protruded from the bottom cover 64, and one end of the base 13 opposite the base 15 is connected to the intake pipe 641, the base 15, the heater 11, the base 13 and the intake pipe 641 are arranged coaxially, the heater 11, the base 13 and the intake pipe 641 are sealed by sealing members, the base 13 and the intake pipe 641 are also sealed, and the intake pipe 641 is connected to the outside air to allow the user to inhale smoothly when smoking.

[0017] The aerosol generating device 100 further includes a circuit 3 and a battery cell 7. The fixed housing 62 includes a front housing 621 and a back housing 622 that are fixedly connected to each other. The circuit 3 and the battery cell 7 are both located within the fixed housing 62. The battery cell 7 is electrically connected to the circuit 3. A button 4 is protruding from the outer housing 61. Pressing the button 4 can energize or deenergize the electric heating film layer of the heater 11. The electric heating film layer includes an electric heating coating, preferably an infrared electric heating coating that can emit infrared light. A charging interface 31 exposed from the bottom cover 64 is further connected to the circuit 3. The charging interface 31 allows users to charge or upgrade the aerosol generating device 100 to ensure continuous use of the aerosol generating device 100.

[0018] The aerosol generating device 100 further includes a thermal insulation tube 17 that is provided within the fixed housing 62 and is provided around the heater 11 to prevent the user's hands from feeling hot due to the transfer of a large amount of heat to the outer housing 61. The thermal insulation tube includes a thermal insulation material that may be insulating rubber, aerogel, aerogel felt, asbestos, aluminum silicate, calcium silicate, diatomaceous earth, zirconium oxide, etc. The thermal insulation tube 17 may also be a vacuum thermal insulation tube. An infrared reflective coating may also be formed within the thermal insulation tube 17 to reflect a portion of the heat radiated by the heater 11 back to the heater 11, thereby improving heating efficiency.

[0019] The aerosol generating device 100 further includes a temperature sensor 2, such as an NTC thermistor, a PTC thermistor or a thermocouple, used to detect the real-time temperature of the heater 11 and transmit the detected real-time temperature to the circuit 3, which adjusts the magnitude of the current flowing through the heater 11 based on the real-time temperature.

[0020] 3 and 4 show a heater provided in a first example of the present application. As shown in FIGS. 3 and 4, the heater 11 is It includes a base 111 having a cavity formed therein suitable for receiving an aerosol-forming substrate.

[0021] Specifically, the substrate 111 includes a proximal end, a distal end, and a surface extending between the proximal and distal ends. The interior of the substrate 111 forms a hollow cavity. The substrate 111 may be tubular, for example, cylindrical, prismatic, or other cylindrical. The substrate 111 is preferably cylindrical, and the cavity is a cylindrical hole that penetrates the center of the substrate 111.

[0022] In one example, the inner diameter of the base 111 is 6 mm to 15 mm, or 7 mm to 15 mm, or 7 mm to 14 mm, or 7 mm to 12 mm, or 7 mm to 10 mm. The axial extension length of the base 111 is 15 mm to 30 mm, or 15 mm to 28 mm, or 15 mm to 25 mm, or 16 mm to 25 mm, or 18 mm to 25 mm, or 18 mm to 24 mm, or 18 mm to 22 mm. The base 111 having these dimensions is applicable to aerosol-generating products with a short and thick shape.

[0023] In one example, the inner diameter of base 111 is 5 mm to 5.9 mm, and in specific examples, it may be 5.5 mm, 5.4 mm, etc. The axial extension length of base 111 is 30 mm to 60 mm, or 30 mm to 55 mm, or 30 mm to 50 mm, or 30 mm to 45 mm, or 30 mm to 40 mm. Base 111 of these dimensions is applied to elongated aerosol-generating products.

[0024] The base 111 may be made of a material that is resistant to high temperatures and is infrared-transmissive, such as quartz glass, ceramics, or mica, or may be made of another material that has high infrared transmittance, for example, a high-temperature resistant material with an infrared transmittance of 95% or more, and is not specifically limited here.

[0025] An aerosol-forming substrate is a substrate capable of releasing a volatile compound capable of forming an aerosol. Such a volatile compound can be released by heating the aerosol-forming substrate. The aerosol-forming substrate may be solid, liquid, or comprise both solid and liquid components. The aerosol-forming substrate may be adsorbed, coated, immersed, or otherwise applied to a carrier or support. Conveniently, the aerosol-forming substrate may be part of the aerosol-generating product.

[0026] The aerosol-forming substrate may contain nicotine. The aerosol-forming substrate may contain tobacco, for example, a tobacco-containing material containing volatile compounds having a tobacco odor, which are released from the aerosol-forming substrate upon heating. The aerosol-forming substrate may contain at least one aerosol-forming agent, which may be any suitable known compound or mixture of compounds that, during use, contributes to the formation of a dense and stable aerosol and is generally resistant to thermal decomposition at the operating temperature of the aerosol-generating system. Suitable aerosol-forming agents are well known in the art and include, but are not limited to, polyols such as triethylene glycol, 1,3-butanediol, and glycerol, esters of polyols such as glyceryl monoacetate, glyceryl diacetate, or glyceryl triacetate, and fatty acid esters of mono-, di-, or polycarboxylic acids such as dimethyl dodecanedioate and dimethyl tetradecanedioate.

[0027] The infrared electrothermal coating 112 generates heat upon receiving electric power and further generates infrared rays of a certain wavelength, for example, far infrared rays of 8 μm to 15 μm, which heat the aerosol-forming substrate in the cavity after passing through the base 111. When the wavelength of the infrared rays matches the absorption wavelength of the aerosol-forming substrate, the infrared energy is easily absorbed by the aerosol-forming substrate.

[0028] The infrared electric heating coating 112 is preferably formed by mixing far-infrared electric heating ink, ceramic powder, and inorganic adhesive sufficiently uniformly, then applying it to the outer surface of the substrate 111, and then baking and curing it for a predetermined time, so that the thickness of the infrared electric heating coating 112 is 30 μm to 50 μm. Of course, the infrared electric heating coating 112 may also be formed by mixing and stirring tin tetrachloride, tin oxide, antimony trichloride, titanium tetrachloride, and anhydrous copper sulfate in a predetermined ratio, and then applying it to the outer surface of the substrate 111. Alternatively, the infrared electric heating coating 112 may ... The infrared electric heating coating 112 may be one of a ceramic layer, an iron-based carbide ceramic layer, a rare earth-based oxide ceramic layer, a rare earth-based nitride ceramic layer, a rare earth-based boride ceramic layer, a rare earth-based carbide ceramic layer, a nickel-cobalt-based oxide ceramic layer, a nickel-cobalt-based nitride ceramic layer, a nickel-cobalt-based boride ceramic layer, a nickel-cobalt-based carbide ceramic layer, or a high-silica molecular sieve ceramic layer, and the infrared electric heating coating 112 may also be other conventional material coatings.

[0029] The infrared electric heating coating 112 is formed on the surface of the substrate 111. The infrared electric heating coating 112 may be formed on the outer surface of the substrate 111 or on the inner surface of the substrate 111.

[0030] In a preferred embodiment, the infrared electric heating coating 112 is formed on the outer surface of the substrate 111. In a direction from the proximal end of the substrate 111 to the distal end of the substrate 111, i.e., in the axial direction of the substrate 111, the infrared electric heating coating 112 includes a first infrared electric heating coating S1, a second infrared electric heating coating (S21, S22), a third infrared electric heating coating (S31, S32), and a fourth infrared electric heating coating (S41, S42) that are spaced apart. The second infrared electric thermal coating (S21, S22) includes an infrared electric thermal coating S21 and an infrared electric thermal coating S22 (sub-infrared electric thermal coating) spaced apart in the circumferential direction of the substrate 111, the third infrared electric thermal coating (S31, S32) includes an infrared electric thermal coating S31 and an infrared electric thermal coating S32 spaced apart in the circumferential direction of the substrate 111, and the fourth infrared electric thermal coating (S41, S42) includes an infrared electric thermal coating S41 and an infrared electric thermal coating S42 spaced apart in the circumferential direction of the substrate 111.

[0031] The conductive element includes an electrode 113 and an electrode 114 spaced apart from each other on the substrate 111 and is used to supply the power provided by the battery cell 7 to the infrared electrothermal coating 112 .

[0032] Both the electrode 113 and the electrode 114 are in contact with and electrically connected to the infrared electrothermal coating 112. The electrode 113 and the electrode 114 may be a conductive coating, which may be a metal coating, and the metal coating may include silver, gold, palladium, platinum, copper, nickel, molybdenum, tungsten, niobium, or an alloy material of the above metals.

[0033] The electrodes 113 include an electrode 113a that extends in the axial direction of the base 111 and is elongated, and electrodes 113b, 113c, and 113d that extend in the circumferential direction of the base 111 and are arc-shaped, and the electrodes 113b, 113c, and 113d are arranged in order at intervals in the axial direction of the base 111.

[0034] The electrode 113a is provided at a distance from the infrared electrothermal coating 112. One end of the electrode 113a is provided close to the proximal end of the substrate 111, and the other end is provided close to the distal end of the substrate 111. Preferably, the electrode 113a is provided at a distance from the proximal end or the distal end of the substrate 111, and the distance is 0 to 1 mm, and in specific examples, may be 0.2 mm, 0.4 mm, 0.5 mm, 0.7 mm, etc.

[0035] Electrode 113b is provided close to the proximal end of the substrate 111. Electrode 113b starts from electrode 113a, extends in the circumferential direction of the substrate 111, and then ends at electrode 113a. The circumferential extension length of electrode 113b is greater than the circumferential extension length of the first infrared electrothermal coating S1. Electrode 113b contacts and is electrically connected to the first infrared electrothermal coating S1.

[0036] The electrode 113c is provided adjacent to a middle portion of the substrate 111 and is provided between the second infrared electric thermal coating (S21, S22) and the third infrared electric thermal coating (S31, S32). The electrode 113c starts from the electrode 113a, and a portion thereof extends in a first circumferential direction of the substrate 111, for example, in a clockwise direction, before being provided adjacent to the electrode 114, with this portion of the electrode 113c in contact with and electrically connected to the infrared electric thermal coating S22 and the infrared electric thermal coating S32, and another portion of the electrode 113c extends in a second circumferential direction of the substrate 111, for example, in a counterclockwise direction, before being provided adjacent to the electrode 114, with this other portion of the electrode 113c in contact with and electrically connected to the infrared electric thermal coating S21 and the infrared electric thermal coating S31.

[0037] Electrode 113d is provided adjacent to the distal end of substrate 111. Electrode 113d starts from electrode 113a, and a portion of electrode 113d extends in a first circumferential direction, for example, clockwise, around substrate 111 before being provided adjacent to electrode 114, with this portion of electrode 113d in contact with and electrically connected to infrared electric heating coating S42, and another portion of electrodes 113d extends in a second circumferential direction, for example, counterclockwise, around substrate 111 before being provided adjacent to electrode 114, with this other portion of electrodes 113d in contact with and electrically connected to infrared electric heating coating S41.

[0038] The electrodes 114 include an electrode 114a that extends in the axial direction of the base 111 and is elongated, and electrodes 114b and 114c that extend in the circumferential direction of the base 111 and are arc-shaped, and the electrodes 114b and 114c are arranged in sequence at intervals in the axial direction of the base 111.

[0039] The electrode 114a is spaced apart from the second infrared electrothermal coating (S21, S22), the third infrared electrothermal coating (S31, S32), and the fourth infrared electrothermal coating (S41, S42). The electrode 114a and the electrode 113a are spaced apart in the circumferential direction of the substrate 111, i.e., the electrode 114a is located on both sides of the infrared electrothermal coatings S21, S31, and S41. The axial extension length of the electrode 114a is shorter than the axial extension length of the electrode 113a. One end of the electrode 114a is located adjacent to the first infrared electrothermal coating S1. Preferably, the electrode 114a has one end in contact with the first infrared electrothermal coating S1 and the other end adjacent to the distal end of the substrate 111.

[0040] The electrode 114b is provided between the first infrared electric heating coating S1 and the second infrared electric heating coating (S21, S22), or between the electrode 113b and the electrode 113c. The electrode 114b starts from the electrode 114a, and a portion thereof extends in a first circumferential direction of the substrate 111, for example, in a clockwise direction, and is then provided adjacent to the electrode 113a, with this portion of the electrode 114b in contact with and electrically connected to the infrared electric heating coating S1 and the infrared electric heating coating S21, and another portion of the electrode 114b extends in a second circumferential direction of the substrate 111, for example, in a counterclockwise direction, and is then provided adjacent to the electrode 113a, with this other portion of the electrode 114b in contact with and electrically connected to the infrared electric heating coating S1 and the infrared electric heating coating S22.

[0041] The electrode 114c is provided between the third infrared electric heating coating (S31, S32) and the fourth infrared electric heating coating (S41, S42). The electrode 114c starts from the electrode 114a, and a portion of the electrode 114c extends in a first circumferential direction of the substrate 111, for example, in a clockwise direction, and is then provided adjacent to the electrode 113a, with this portion of the electrode 114c in contact with and electrically connected to the infrared electric heating coating S31 and the infrared electric heating coating S41, and another portion of the electrode 114c extends in a second circumferential direction of the substrate 111, for example, in a counterclockwise direction, and is then provided adjacent to the electrode 113a, with this other portion of the electrode 114c in contact with and electrically connected to the infrared electric heating coating S32 and the infrared electric heating coating S42.

[0042] After the electrodes 113 and 114 are conductive, they simultaneously supply power provided from the battery cell 7 to the first infrared electrothermal coating S1, the second infrared electrothermal coatings (S21, S22), the third infrared electrothermal coatings (S31, S32), and the fourth infrared electrothermal coatings (S41, S42). That is, the first infrared electrothermal coating S1, the second infrared electrothermal coatings (S21, S22), the third infrared electrothermal coatings (S31, S32), and the fourth infrared electrothermal coatings (S41, S42) are connected in parallel between the electrodes 113 and 114. The infrared electrothermal coatings S21 and S22, the infrared electrothermal coatings S31 and S32, and the infrared electrothermal coatings S41 and S42 are also connected in parallel between the electrodes 113 and 114. The parallel connection of multiple infrared electrothermal coatings can reduce the overall resistance of the infrared electrothermal coating 112. Assuming that current flows in from electrode 113 and out from electrode 114, the direction of current flow in the infrared electric heating coating 112 extends almost in the axial direction of the substrate 111 (indicated by the dashed arrow in the figure). Here, the direction of current flow in the first infrared electric heating coating S1 and the third infrared electric heating coating (S31, S32) coincides with the direction of extension from the proximal end of the substrate 111 to the distal end of the substrate 111, and the direction of current flow in the second infrared electric heating coating (S21, S22) and the fourth infrared electric heating coating (S41, S42) coincides with the direction of extension from the distal end of the substrate 111 to the proximal end of the substrate 111, with the current flowing in opposite directions in adjacent infrared electric heating coatings.

[0043] It can be understood that the number of parallel-connected infrared electrothermal coatings is not limited to the number shown in FIGS. 3-4, and may be more or less.

[0044] The parallel-connected infrared heating coatings may have the same, partially the same, or different equivalent resistances, and similarly, the heating powers may be the same, partially the same, or different. By adjusting the equivalent resistance of each infrared heating coating, the power distribution in each region can be adjusted, and therefore the temperature distribution in each region can be adjusted.

[0045] In a preferred embodiment, the first infrared electric heating coating S1 has a relatively small equivalent resistance, a relatively large heating power, and a relatively fast heating rate, so that the portion of the aerosol-forming substrate corresponding to the first infrared electric heating coating S1 can heat up more quickly and generate smokable aerosol compared to the portions of the aerosol-forming substrate corresponding to the other infrared electric heating coatings, thereby shortening the pre-heating time of the aerosol-forming substrate and reducing the waiting time for smoking. The second infrared electric heating coatings (S21, S22), the third infrared electric heating coatings (S31, S32), and the fourth infrared electric heating coatings (S41, S42) may have the same equivalent resistance.

[0046] It should be noted that the heating rate of the first infrared electric heating coating S1 is faster than that of other infrared electric heating coatings, such as the second infrared electric heating coatings (S21, S22), can be verified by the following method: When the same predetermined temperature is set, if the heating temperature of the first infrared electric heating coating S1 reaches the predetermined temperature from an initial temperature (e.g., ambient temperature) and the heating temperature of the second infrared electric heating coatings (S21, S22) is lower than the predetermined temperature, this indicates that the heating rate of the first infrared electric heating coating S1 is faster than that of the second infrared electric heating coatings (S21, S22). The predetermined temperature may be the maximum temperature of the aerosol-generating device 100 or the operating temperature, i.e., the temperature at which aerosol can be generated on the aerosol-forming substrate.

[0047] Due to differences in equivalent resistance, heating power, or heating rate, there is a difference or a large difference in temperature between different infrared electric heating coatings during the pre-heating stage of the aerosol-generating device 100, but there is a relatively small difference in temperature between different infrared electric heating coatings during the warming stage or smoking stage of the aerosol-generating device 100. The pre-heating stage, warming stage, or smoking stage are different durations in the curve of the temperature change of the aerosol-forming product or the infrared electric heating coating with time.

[0048] It should be noted that according to the resistance calculation formula R=ρL / S, when the resistivity ρ is constant (when the infrared thermal coating is applied uniformly, the resistivity ρ is constant), the resistance value of the resistor depends on the values ​​of the parameters L and S. Therefore, by setting the two parameters L and S of the infrared thermal coating, the equivalent resistance value of each infrared thermal coating can be adjusted.

[0049] 3 and 4, the arrangement of electrode 113 and electrode 114 serves as wiring between the battery cell 7, for example, a first conductive wire electrically connected to electrode 113 and a second conductive wire electrically connected to electrode 114, and one end of the first conductive wire and the second conductive wire may be provided at the distal end of the base 111 and the other end may be electrically connected to the battery cell 7. Of course, one end of the first conductive wire may be provided at the distal end of the base 111, and one end of the second conductive wire may be provided at the proximal end of the base 111.

[0050] 3 and 4, the base 111 is further provided with a positioning groove, and in a preferred embodiment, the positioning groove is provided at the end of the distal end of the base 111, for example, formed by recessing a portion of the end of the distal end of the base 111. The positioning groove can position the base 111; for example, during assembly, a protrusion on the base 13 can be engaged with the positioning groove to hold the distal end of the base 111. During manufacturing of the heater 11, a manufacturing tool can be engaged with the positioning groove to determine information such as the orientation and end point of coating the electric heating film layer and electrodes, which is useful for coating the electric heating film layer and electrodes and improves manufacturing efficiency.

[0051] It should be noted that providing the electrode 113a and the infrared electrothermal coating 112 at a distance from each other, and providing the electrode 114a and the second infrared electrothermal coating (S21, S22), the third infrared electrothermal coating (S31, S32) and the fourth infrared electrothermal coating (S41, S42) at a distance from each other, Coating a conductive element on the surface of the substrate 111, then coating an electric heating film layer on the surface of the substrate 111, and finally removing a part of the electric heating film layer adjacent to the electrode 113a and the electrode 114a from the coated electric heating film layer; Coating an electric heating film layer on the surface of the substrate 111, then coating a conductive element on the surface of the substrate 111, and finally removing a portion of the electric heating film layer adjacent to the electrode 113a and the electrode 114a; Coating an electric heating film layer on the surface of the substrate 111, then removing the electric heating film layer on a part of the surface, and finally coating a conductive element partially on the surface of this part (partial coating does not mean coating the conductive element or the electric heating film layer on the entire corresponding surface, and will be referred to similarly below); coating a conductive element partially on a first partial surface of the substrate 111 and an electric heating film layer entirely on a second partial surface of the substrate 111, or coating a conductive element entirely on the first partial surface of the substrate 111 and an electric heating film layer entirely on the second partial surface of the substrate 111, or coating a conductive element partially on the first partial surface of the substrate 111 and an electric heating film layer entirely on the second partial surface of the substrate 111 (coating entirely means coating the conductive element or the electric heating film layer entirely on the corresponding surface); This can be achieved by at least one of coating a conductive element on a first partial surface of the substrate 111, coating an electric heating film layer on a second partial surface of the substrate 111, and providing a gap between the first partial surface and the second partial surface.

[0052] For ease of understanding, a method for manufacturing the heater 11 in the example shown in FIGS. 3 and 4 will be described below based on one method for providing the heaters at intervals.

[0053] As shown in FIG. 5, the manufacturing method of the heater 11 includes steps S11 and S12.

[0054] In step S11, a substrate 111 is provided, and an infrared electric heating coating and a conductive element are coated on the surface of the substrate 111.

[0055] In this step, the infrared electric thermal coating may be applied first and then the conductive element, or the conductive element may be coated first and then the infrared electric thermal coating may be applied. The conductive element is coated in the shape shown in Figures 3 and 4, and the infrared electric thermal coating is applied around the circumferential direction of the base 111 so that there is a gap between the upper and lower ends of the infrared electric thermal coating and the end of the base 111.

[0056] In step S12, a portion of the infrared thermal coating adjacent to the electrodes 113a and 114a is removed from the applied infrared thermal coating.

[0057] In this step, it is necessary to remove some of the infrared electric heating coating adjacent to electrodes 113a and 114a from the applied infrared electric heating coating to form the first infrared electric heating coating S1, the second infrared electric heating coating (S21, S22), the third infrared electric heating coating (S31, S32) and the fourth infrared electric heating coating (S41, S42) shown in Figure 3 or Figure 4.

[0058] 6 and 7 show a heater provided in a second example of the present application.

[0059] 6 and 7, the infrared electric thermal coating 112 includes a first infrared electric thermal coating S1. The first infrared electric thermal coating S1 is not separated from other infrared electric thermal coatings.

[0060] The electrodes 113 include an electrode 113a that extends in the axial direction of the base body 111 and has an elongated shape, and an electrode 113b that extends in the circumferential direction of the base body 111 and has an arc shape.

[0061] 3 and 4, electrode 113a is spaced apart from the first infrared electrothermal coating S1, with one end located close to the proximal end of the substrate 111 and the other end located close to the distal end of the substrate 111. Electrode 113b is located close to the proximal end of the substrate 111, begins at electrode 113a, extends in the circumferential direction of the substrate 111, and ends at electrode 113a, with the circumferential extension length of electrode 113b being greater than the circumferential extension length of the first infrared electrothermal coating S1 and in contact with and electrically connected to the first infrared electrothermal coating S1.

[0062] 3 and 4 in that the electrode 114 is configured to extend in the circumferential direction of the base 111 and to have an arc shape. The electrode 114 is provided close to the distal end of the base 111. The circumferential extension length of the electrode 114 is the same as the circumferential extension length of the first infrared electrothermal coating S1. The electrode 114 contacts and is electrically connected to the first infrared electrothermal coating S1.

[0063] 3 and 4 in that the inner diameter of the base 111 is 6 mm to 15 mm, or 7 mm to 15 mm, or 7 mm to 14 mm, or 7 mm to 12 mm, or 7 mm to 10 mm. The axial extension length of the base 111 is 15 mm to 30 mm, or 15 mm to 28 mm, or 15 mm to 25 mm, or 16 mm to 25 mm, or 18 mm to 25 mm, or 18 mm to 24 mm, or 18 mm to 22 mm. Base 111 of these dimensions is applicable to a thick and short aerosol-generating product.

[0064] According to the resistance calculation formula R=ρL / S, an infrared electric thermal coating 112 in which the current flow direction extends almost entirely in the axial direction of the substrate 111 has a smaller value for parameter L and a larger value for parameter S than an infrared electric thermal coating in which the current flow direction extends almost entirely in the circumferential direction of the substrate 111. Therefore, the heaters in the examples shown in Figures 6 and 7 can reduce the resistance value of the infrared electric thermal coating 112. As with the examples shown in Figures 3 and 4, the resistance value of the infrared electric thermal coating 112 can be further reduced by connecting multiple infrared electric thermal coatings in parallel.

[0065] Similar to the example shown in FIGS. 3 and 4, the arrangement of the electrodes 113 and 114 is useful for wiring between the battery cells 7.

[0066] It should be noted that in the example shown in FIGS. 6 and 7, other undescribed details regarding the components with the same reference numerals as those in the example shown in FIGS. 3 and 4 can be referred to above, and are similar in the following examples.

[0067] 8 and 9 show a heater provided in a third example of the present application.

[0068] 8 and 9, the dimensions of the base 111 can be designed to be suitable for a short and wide aerosol-generating product or a long and narrow aerosol-generating product. Preferably, the base 111 is designed to be suitable for a short and wide aerosol-generating product, i.e., the inner diameter of the base 111 is 6 mm to 15 mm, or 7 mm to 15 mm, or 7 mm to 14 mm, or 7 mm to 12 mm, or 7 mm to 10 mm. The axial extension length of the base 111 is 15 mm to 30 mm, or 15 mm to 28 mm, or 15 mm to 25 mm, or 16 mm to 25 mm, or 18 mm to 25 mm, or 18 mm to 24 mm, or 18 mm to 22 mm.

[0069] In the example shown in FIGS. 8 and 9, the infrared electric thermal coating 112 includes a first infrared electric thermal coating S1 and a second infrared electric thermal coating S2, and the second infrared electric thermal coating S2 is not partitioned by other infrared electric thermal coatings.

[0070] The electrodes 113 include an electrode 113a that extends in the axial direction of the base body 111 and has an elongated shape, and electrodes 113b and 113c that extend in the circumferential direction of the base body 111 and have an arc shape.

[0071] 3 and 4, electrode 113a is spaced apart from the first infrared electrothermal coating S1 and the second infrared electrothermal coating S2, with one end located close to the proximal end of the substrate 111 and the other end located close to the distal end of the substrate 111. Electrode 113b is located close to the proximal end of the substrate 111, begins at electrode 113a, extends in the circumferential direction of the substrate 111, and ends at electrode 113a, with the circumferential extension length of electrode 113b being greater than the circumferential extension length of the first infrared electrothermal coating S1 and in contact with and electrically connected to the first infrared electrothermal coating S1.

[0072] 3 and 4 in that electrode 113c is provided close to the distal end of substrate 111. One end of electrode 113c originates from electrode 113a, and the other end extends in the second circumferential direction of substrate 111, i.e., the counterclockwise direction, and is then provided close to electrode 114. Electrode 113c is in contact with and electrically connected to second infrared electrothermal coating S2.

[0073] The electrodes 114 include an electrode 114a that extends in the axial direction of the base body 111 and has an elongated shape, and an electrode 114b that extends in the circumferential direction of the base body 111 and has an arc shape.

[0074] 3 and 4 in that electrode 114a is provided close to electrode 113a. The gap between electrode 114a and electrode 113a is 0 to 1 mm, and may be 0.2 mm, 0.4 mm, 0.5 mm, 0.7 mm, etc. in specific examples.

[0075] 3 and 4 in that electrode 114b is provided between the first infrared electrothermal coating S1 and the second infrared electrothermal coating S2. One end of electrode 114b originates from electrode 114a, and the other end extends in the first circumferential direction, i.e., clockwise, of the substrate 111, and is provided adjacent to electrode 113a. Electrode 114b contacts and is electrically connected to the first infrared electrothermal coating S1 and the second infrared electrothermal coating S2.

[0076] Similar to the example shown in FIGS. 3 and 4, electrodes 113 and 114 conduct electricity and then simultaneously supply power from the battery cell 7 to the first infrared electric heating coating S1 and the second infrared electric heating coating S2. This corresponds to the first infrared electric heating coating S1 and the second infrared electric heating coating S2 being connected in parallel between electrodes 113 and 114. Assuming that current flows in from electrode 113 and flows out from electrode 114, the direction of current flow in the infrared electric heating coating 112 extends almost in the axial direction of the substrate 111 (as indicated by the dashed arrow in the figure), thereby reducing the resistance of the infrared electric heating coating 112. Furthermore, by connecting multiple infrared electric heating coatings in parallel, the overall resistance of the infrared electric heating coating 112 can be reduced.

[0077] Similar to the example shown in FIGS. 3 and 4, the arrangement of electrodes 113 and 114 is useful for wiring between battery cells 7. The resistance value of the infrared thermal coating 112 can be reduced overall. By adjusting the equivalent resistance value of each infrared thermal coating, the power distribution in each region can be adjusted, and therefore the temperature distribution in each region can be adjusted.

[0078] 10 and 11 show a heater provided in a fourth example of the present application.

[0079] In the examples shown in Figures 10 and 11, the dimensions of the base 111 can be designed to be suitable for a short, thick aerosol-generating product or a long, thin aerosol-generating product, and are preferably designed to be suitable for a short, thick aerosol-generating product.

[0080] 8 and 9 in that the conductive element further includes electrodes 115 provided on the base 111 at intervals.

[0081] 8 and 9 in that one end of electrode 113c originates from electrode 113a, and the other end extends in the second circumferential direction of substrate 111, i.e., counterclockwise, and is then provided adjacent to electrode 115. Electrode 113c is provided at a distance from second infrared electrothermal coating S2.

[0082] 8 and 9 in that the electrode 114 further includes an arc-shaped electrode 114c that extends in the circumferential direction of the base 111. One end of the electrode 114c originates from the electrode 114a, and the other end extends in the first circumferential direction of the base 111, i.e., in the clockwise direction, and is provided adjacent to the electrode 115. The electrode 114c is provided at a distance from the second infrared electrothermal coating S2.

[0083] The electrodes 115 include electrodes 115a and 115b, which extend in the circumferential direction of the substrate 111 and are arc-shaped. Electrode 115a is in contact with and electrically connected to the second infrared electrothermal coating S2, and its circumferential extension length is the same as that of the second infrared electrothermal coating S2. Electrode 115b is connected to electrode 115a, and its circumferential extension length is shorter than that of electrode 115a.

[0084] Similar to the example shown in FIGS. 8 and 9, the arrangement of the electrodes 113, 114, and 115 is useful for wiring between the battery cells 7.

[0085] Compared to an infrared electric thermal coating in which the direction of current flow extends almost in the circumferential direction of the substrate 111, the equivalent resistance value of the infrared electric thermal coating of the example shown in FIGS. 10 to 11 is low.

[0086] Similar to the example shown in FIGS. 8 and 9, power can be simultaneously supplied to the infrared-thermal coating by controlling the conductivity of electrodes 113, 114, and 115. After electrodes 113, 114, and 115 are conductive, they simultaneously supply power provided by the battery cell 7 to the first infrared-thermal coating S1 and the second infrared-thermal coating S2. This corresponds to the first infrared-thermal coating S1 and the second infrared-thermal coating S2 being connected in parallel between electrodes 113, 114, and 115. The parallel connection of multiple infrared-thermal coatings can reduce the overall resistance of the infrared-thermal coating 112. Assuming that current flows in from electrodes 113 and 115 and flows out from electrode 114, the direction of current flow in the infrared-thermal coating 112 is essentially along the axial direction of the substrate 111 (as indicated by the dashed arrows in the figures).

[0087] 8 and 9 in that the aerosol-forming substrate can be heated in stages by controlling the order in which electrodes 113, 114, and 115 are conductive. For example, first, electrodes 113 and 114 are controlled to be conductive, and the first infrared electrothermal coating S1 is activated to heat the aerosol-forming substrate in the area corresponding to the first infrared electrothermal coating S1, and then electrodes 114 and 115 are controlled to be conductive, and the second infrared electrothermal coating S2 is activated to heat the aerosol-forming substrate in the area corresponding to the second infrared electrothermal coating S2.

[0088] 12 and 13 show a heater provided in a fifth example of the present application.

[0089] 12 and 13, the dimensions of the base 111 can be designed to be suitable for a short and wide aerosol-generating product or a long and narrow aerosol-generating product. Preferably, the base 111 is designed to be suitable for a short and wide aerosol-generating product, i.e., the inner diameter of the base 111 is 6 mm to 15 mm, or 7 mm to 15 mm, or 7 mm to 14 mm, or 7 mm to 12 mm, or 7 mm to 10 mm. The axial extension length of the base 111 is 15 mm to 30 mm, or 15 mm to 28 mm, or 15 mm to 25 mm, or 16 mm to 25 mm, or 18 mm to 25 mm, or 18 mm to 24 mm, or 18 mm to 22 mm.

[0090] In the example shown in FIGS. 12 and 13, the infrared electric thermal coating 112 includes a first infrared electric thermal coating S1 and a second infrared electric thermal coating S2, and the second infrared electric thermal coating S2 is divided into an infrared electric thermal coating S21 and an infrared electric thermal coating S22.

[0091] The electrodes 113 include an electrode 113a that extends in the axial direction of the base body 111 and has an elongated shape, and electrodes 113b and 113c that extend in the circumferential direction of the base body 111 and have an arc shape.

[0092] 3 and 4, electrode 113a is spaced apart from the first infrared electrothermal coating S1 and the second infrared electrothermal coating S2, with one end located close to the proximal end of the substrate 111 and the other end located close to the distal end of the substrate 111. Electrode 113b is located close to the proximal end of the substrate 111, begins at electrode 113a, extends in the circumferential direction of the substrate 111, and ends at electrode 113a, with the circumferential extension length of electrode 113b being greater than the circumferential extension length of the first infrared electrothermal coating S1 and in contact with and electrically connected to the first infrared electrothermal coating S1.

[0093] 3 and 4 in that the electrode 113c is provided close to the distal end of the base 111.

[0094] Similar to the example shown in Figures 3 and 4, electrode 113c starts from electrode 113a, and a portion of electrode 113c extends in a first circumferential direction of base 111, for example in a clockwise direction, before being arranged close to electrode 114, and this portion of electrode 113c is in contact with and electrically connected to infrared electric heating coating S22, and another portion of electrode 113c extends in a second circumferential direction of base 111, for example in a counterclockwise direction, before being arranged close to electrode 114, and this other portion of electrode 113c is in contact with and electrically connected to infrared electric heating coating S21.

[0095] The electrodes 114 include an electrode 114a that extends in the axial direction of the base body 111 and has an elongated shape, and an electrode 114b that extends in the circumferential direction of the base body 111 and has an arc shape.

[0096] 3 and 4, the electrode 114a is spaced apart from the second infrared electric heating coating S2. The electrode 114a and the electrode 113a are spaced apart, i.e., they are located on either side of the infrared electric heating coating S21. The axial extension length of the electrode 114a is smaller than the axial extension length of the electrode 113a. The electrode 114a has one end adjacent to the first infrared electric heating coating S1, and preferably, the electrode 114a has one end in contact with the first infrared electric heating coating S1 and the other end adjacent to the distal end of the substrate 111.

[0097] 3 and 4, electrode 114b is provided between first infrared electric heating coating S1 and second infrared electric heating coating S2. Electrode 114b starts from electrode 114a, and a portion thereof extends in a first circumferential direction of substrate 111, for example, clockwise, before being provided adjacent to electrode 113a, with this portion of electrode 114b in contact with and electrically connected to infrared electric heating coating S1 and infrared electric heating coating S21, while another portion of electrode 114b extends in a second circumferential direction of substrate 111, for example, counterclockwise, before being provided adjacent to electrode 113a, with this other portion of electrode 114b in contact with and electrically connected to infrared electric heating coating S1 and infrared electric heating coating S22.

[0098] Similar to the example shown in Figures 3 and 4, electrodes 113 and 114 conduct electricity and then simultaneously supply power provided by battery cell 7 to first infrared electric heating coating S1, infrared electric heating coating S21, and infrared electric heating coating S22. In other words, first infrared electric heating coating S1, infrared electric heating coating S21, and infrared electric heating coating S22 are connected in parallel between electrodes 113 and 114. The parallel connection of multiple infrared electric heating coatings can reduce the overall resistance of the infrared electric heating coating 112. Assuming that current flows in from electrode 113 and flows out from electrode 114, the direction of current flow in the infrared electric heating coating 112 extends almost entirely in the axial direction of the substrate 111 (as indicated by the dashed arrow in the figure).

[0099] Similar to the example shown in Figures 3 and 4, the arrangement of electrodes 113 and 114 is useful for wiring between battery cells 7. The resistance value of the infrared electric heating coating 112 can be reduced overall. By adjusting the equivalent resistance value of each infrared electric heating coating, the power distribution in each region can be adjusted, and therefore the temperature distribution in each region can be adjusted.

[0100] FIG. 14 shows a heater provided in the sixth example of the present application.

[0101] This example differs from the examples shown in FIGS. 12 and 13 in that the first infrared electric thermal coating S1 is divided into an infrared electric thermal coating S11 and an infrared electric thermal coating S12.

[0102] Similar to the example shown in FIGS. 12 and 13, the resistance value of the infrared electrothermal coating 112 can be further reduced overall.

[0103] FIG. 15 shows a heater provided in the seventh example of the present application.

[0104] In the example shown in Figure 15, the infrared electric heating coating 112 includes a first infrared electric heating coating S1, a second infrared electric heating coating S2, a third infrared electric heating coating S3, a fourth infrared electric heating coating S4, and a fifth infrared electric heating coating S5 arranged in order in the axial direction of the substrate 111.

[0105] In the example shown in FIG. 15, the conductive element includes an electrode 113, an electrode 114, an electrode 115, an electrode 116, an electrode 117, and an electrode 118 provided on a substrate 111 at intervals.

[0106] An electrode 113 is provided adjacent to the proximal end of the substrate 111 and is in contact with and electrically connected to the first infrared electrothermal coating S1.

[0107] The electrode 114 is in contact with and electrically connected to the first infrared electrothermal coating S1 and the second infrared electrothermal coating S2.

[0108] The electrode 115 is in contact with and electrically connected to the second infrared electrothermal coating S2 and the third infrared electrothermal coating S3.

[0109] The electrode 116 is in contact with and electrically connected to the third infrared electrothermal coating S3 and the fourth infrared electrothermal coating S4.

[0110] The electrode 117 is in contact with and electrically connected to the fourth infrared electrothermal coating S4 and the fifth infrared electrothermal coating S5.

[0111] The electrode 118 is in contact with and electrically connected to the fifth infrared electrothermal coating S5.

[0112] By controlling the conduction sequence of electrodes 113, 114, 115, 116, 117, and 118, stepwise heating of the aerosol-forming substrate can be achieved.

[0113] For example, electrode 113 may be controlled to be electrically connected to the positive electrode of battery cell 7, and then electrodes 114, 115, 116, 117, and 118 may be controlled to be electrically connected to the negative electrode of battery cell 7 one by one in sequence. As a result, when electrodes 113 and 114 are electrically connected to battery cell 7, the first infrared electric heating coating S1 is activated to heat. When electrodes 113 and 115 are electrically connected to battery cell 7 (electrode 114 is disconnected from battery cell 7), the first infrared electric heating coating S1 and second infrared electric heating coating S2 are activated to heat. When electrodes 113 and 116 are electrically connected to battery cell 7 (electrodes 114 and 115 are disconnected from battery cell 7), the first infrared electric heating coating S1, second infrared electric heating coating S2, and third infrared electric heating coating S3 are activated to heat. When electrodes 113 and 117 are electrically connected to the battery cell 7 (electrodes 114, 115, and 116 are disconnected from the battery cell 7), the first infrared electrothermal coating S1, the second infrared electrothermal coating S2, the third infrared electrothermal coating S3, and the fourth infrared electrothermal coating S4 are activated to heat the battery cell 7. When electrodes 113 and 118 are electrically connected to the battery cell 7 (electrodes 114, 115, 116, and 117 are disconnected from the battery cell 7), the first infrared electrothermal coating S1, the second infrared electrothermal coating S2, the third infrared electrothermal coating S3, the fourth infrared electrothermal coating S4, and the fifth infrared electrothermal coating S5 are activated to heat the battery cell 7.

[0114] Furthermore, for example, first, electrodes 113 and 114 may be controlled to be electrically connected to the battery cell 7, the first infrared electric heating coating S1 may be activated to heat the battery, and after electrodes 113 and 114 are electrically connected to the battery cell 7, electrode 115 may be controlled to be electrically connected to the battery cell 7, thereby activating the first infrared electric heating coating S1 and the second infrared electric heating coating S2 to heat the battery, and control may be continued in this order until all electrodes are electrically connected to the battery cell 7.

[0115] Furthermore, for example, first, the electrodes 113 and 114 may be controlled to be electrically connected to the battery cell 7, and the first infrared electric heating coating S1 may be activated to heat them, and then the electrodes 114 and 115 may be controlled to be electrically connected to the battery cell 7 (the electrode 113 may be disconnected from the battery cell 7), and the second infrared electric heating coating S2 may be activated to heat them, and control may be performed in this order until the electrodes 117 and 118 are electrically connected to the battery cell 7.

[0116] It should be noted that the conduction order of the electrodes 113, 114, 115, 116, 117, and 118 is not limited to the above-mentioned cases.

[0117] It should be noted that in the example shown in Figure 15, the dimensions of the base 111 can be designed to be suitable for a short, thick aerosol-generating product or a long, thin aerosol-generating product, and are preferably designed to be suitable for a long, thin aerosol-generating product.

[0118] It should be noted that although the specification and drawings of this application show preferred embodiments of the present application, the present application can be realized in many different forms and is not limited to the embodiments described herein, and these embodiments do not further limit the content of the present application. The purpose of providing these embodiments is to provide a more complete and comprehensive understanding of the disclosure of this application. In addition, the above technical features may be further combined to form various embodiments not listed above, and all of these embodiments are within the scope of the specification of this application. Furthermore, those skilled in the art may make improvements and modifications based on the above description, and all of these improvements and modifications are intended to be protected by the scope of the appended claims of this application.

Claims

1. a heater positioned to heat an aerosol-forming substrate in the aerosol-generating product to generate an aerosol; a substrate; an electric heating film layer provided on the surface of the substrate; a conductive element configured to supply power to the electrically heated film layer such that a flow direction of current in the electrically heated film layer extends in an axial direction of the substrate; The heater according to claim 1, wherein the conductive element includes at least one electrode extending axially of the substrate and spaced apart from the electrically heated film layer.

2. the substrate is configured as a tubular structure; 2. The heater according to claim 1, wherein the base has an inner diameter of 6 mm to 15 mm and an axial extension length of 15 mm to 30 mm.

3. 2. The heater according to claim 1, wherein the base is further provided with a positioning groove for positioning the base.

4. 2. The heater of claim 1, wherein the electrically heated film layer includes an infrared electric heating coating for receiving electrical power to generate heat and produce infrared radiation.

5. The electric heating film layer includes a plurality of electric heating film layers that are distributed at intervals in the axial direction of the substrate and connected in parallel, 2. The heater of claim 1, wherein the conductive element is configured to simultaneously supply power to the plurality of electrically heated film layers such that at least one of the flow directions of current in the plurality of electrically heated film layers extends in an axial direction of the substrate.

6. 6. The heater according to claim 5, wherein the currents flow in two adjacent electric heating film layers of the plurality of electric heating film layers in opposite directions.

7. 6. The heater according to claim 5, wherein at least one of the plurality of electric heating film layers has a plurality of sub-electric heating film layers distributed at intervals in the circumferential direction of the substrate.

8. 8. The heater according to claim 7, wherein at least one of the plurality of sub-electric heating film layers has a resistance different from that of the other sub-electric heating film layers, or the plurality of sub-electric heating film layers all have the same resistance.

9. 6. The heater of claim 5, wherein at least one of said plurality of electric heating film layers has a resistance different from the resistance of the other electric heating film layers.

10. the substrate includes a proximal end and a distal end; 6. The heater of claim 5, wherein the electric heating film layer closest to the substrate-proximal end among the plurality of electric heating film layers has a resistance lower than that of the other electric heating film layers.

11. the conductive element includes a first electrode and a second electrode spaced apart, the first electrode and the second electrode simultaneously supplying electrical power to the plurality of electrically heated film layers; the first electrode includes a third electrode extending in the axial direction of the base body and a fourth electrode extending in the circumferential direction of the base body, the second electrode includes a fifth electrode extending in the axial direction of the base body and a sixth electrode extending in the circumferential direction of the base body, 6. The heater of claim 5, wherein the third electrode and the fifth electrode are spaced apart from the plurality of electric heating film layers, and the fourth electrode and the sixth electrode are in contact with and electrically connected to the plurality of electric heating film layers.

12. 12. The heater according to claim 11, wherein the third electrode is provided adjacent to the fifth electrode in the circumferential direction of the substrate, or the third electrode and the fifth electrode are provided on both sides of a portion of the electric heating film layer.

13. 12. The heater of claim 11, wherein the third electrode has an axial extension length greater than the axial extension length of the fifth electrode.

14. the substrate includes a proximal end and a distal end; 12. The heater of claim 11, wherein the third electrode has one end located near the proximal end of the substrate and the other end located near the distal end of the substrate, and the fifth electrode has one end located near the distal end of the substrate.

15. the first electrode includes a plurality of the fourth electrodes, and the second electrode includes one or a plurality of the sixth electrodes; 12. The heater according to claim 11, wherein one sixth electrode is provided between two adjacent fourth electrodes in the axial direction of the substrate.

16. 12. The heater of claim 11, wherein the fourth electrode is configured to start from the third electrode, extend in a circumferential direction of the substrate, and then terminate at the third electrode, and / or the fourth electrode is configured to start from the third electrode, extend in a circumferential direction of the substrate, and then be provided adjacent to the fifth electrode.

17. The heater of claim 11 , wherein the sixth electrode is configured to start from the fifth electrode, extend in a circumferential direction of the substrate, and then be provided adjacent to the third electrode.

18. the conductive element further includes a seventh electrode, and the first electrode, the second electrode, and the seventh electrode simultaneously supply power to the plurality of electrically heated film layers; The heater of claim 11 , wherein the seventh electrode extends in a circumferential direction of the substrate and is configured to contact and be electrically connected to at least one of the plurality of electric heating film layers.

19. 12. The heater according to claim 11, wherein the third electrode and the fifth electrode are configured as elongated electrodes extending in the axial direction of the base, and / or the fourth electrode and the sixth electrode are configured as arc-shaped electrodes extending in the circumferential direction of the base.

20. A method for manufacturing a heater according to any one of claims 1 to 19, comprising: The step of spacing the electrode and the electrically heated film layer further comprises: coating the conductive element and the electric heating film layer on a surface of the substrate, and then removing a portion of the electric heating film layer adjacent to the electrode from the coated electric heating film layer; Coating an electric heating film layer on a surface of a substrate, then removing the electric heating film layer on a portion of the surface, and finally coating a conductive element partially on the surface of this portion; coating a first partial surface of the substrate with a conductive element and an entire second partial surface of the substrate with an electric heating film layer, or coating a first partial surface of the substrate with a conductive element and an entire second partial surface of the substrate with an electric heating film layer, or coating a first partial surface of the substrate with a conductive element and an entire second partial surface of the substrate with an electric heating film layer; 20. The method of claim 1, wherein the method is realized by at least one of coating a conductive element on a first partial surface of a substrate, and coating an electric heating film layer on a second partial surface of the substrate, the first partial surface and the second partial surface being spaced apart.

21. a housing assembly; a heater according to any one of claims 1 to 19 disposed within the housing assembly; and and a battery cell for providing power.

Images