Aerosol generating device and heating assembly thereof

Abstract

The utility model relates to an aerosol generating device and a heating assembly thereof, and the heating assembly comprises a substrate tube structure which is provided with a first end for the insertion of an aerosol generating product and a second end opposite to the first end; the heating structure is arranged on the outer side surface of the substrate tube structure and comprises at least two electrodes; and the fixing assembly is arranged at the second end of the base body pipe structure. The fixing assembly comprises a fixing base and at least two conducting strips integrally formed with the fixing base in an injection molding mode, and the at least two conducting strips are electrically connected with the at least two electrodes respectively. The fixing assembly not only has a fixing function, but also has an electric connection function, and is connected with the electrode through the conducting strip, so that the problem caused by lead processing is avoided.

Description

Technical Field

[0001] This utility model relates to the field of aerosol generation technology, and in particular to an aerosol generation device and its heating component. Background Technology

[0002] Aerosol generating devices are used to heat aerosol-generating products (such as tobacco products) to produce aerosols for users to inhale. Tubular heating elements are an important type of heating element in aerosol generating devices. Related technologies use multi-segment heating elements to achieve more uniform energy release during inhalation. However, multi-segment heating elements require more leads to connect the heating element and the controller, increasing material costs. Furthermore, with more leads, it is difficult to weld all leads to the heating element surface at once; the process must be completed in several stages, increasing the number of spot welding operations and sintering costs. Utility Model Content

[0003] This invention provides an improved heating component and further provides an improved aerosol generating device to solve the above-mentioned technical problems.

[0004] The technical solution adopted by this utility model to solve its technical problem is: to provide a heating component, including: a base tube structure having a first end for inserting an aerosol generation product and a second end opposite to the first end; a heating structure disposed on the outer side of the base tube structure and including at least two electrodes; and a fixing component disposed on the second end of the base tube structure;

[0005] The fixing component includes a fixing base and at least two conductive sheets integrally injection molded with the fixing base, wherein the at least two conductive sheets are electrically connected to the at least two electrodes respectively.

[0006] In some embodiments, the conductive sheet is a spring sheet.

[0007] In some embodiments, the conductive sheet includes a body portion and a first connecting portion and a second connecting portion located at both ends of the body portion.

[0008] The main body is embedded in the fixing base.

[0009] Both the first connecting part and the second connecting part are located outside the fixed base, and the first connecting part is electrically connected to the electrode.

[0010] In some embodiments, when the conductive sheet is used for signal detection, the area of ​​the first connection portion is larger than the area of ​​the second connection portion.

[0011] In some embodiments, the body portion is provided with a plurality of through holes spaced apart along the length direction, and / or, the body portion is provided with a plurality of slots spaced apart along the length direction.

[0012] In some embodiments, the groove and the through hole are offset from each other along the length of the body portion.

[0013] In some embodiments, the at least two conductive sheets are arranged at uniform or non-uniform intervals in the circumferential direction of the substrate tube structure.

[0014] In some embodiments, the heating structure includes at least three heating units and at least four electrodes, with each heating unit connected to two of the electrodes.

[0015] There are at least four conductive sheets, and each of the at least four conductive sheets is connected to at least four electrodes in a one-to-one correspondence.

[0016] In some embodiments, the at least three heating units are arranged at intervals along the axial direction of the substrate tube structure.

[0017] In some embodiments, the heating structure includes a base layer, at least one heating unit disposed on the inner side of the base layer, and at least two conductive units disposed on the outer side of the base layer and electrically connected to the at least one heating unit, wherein the electrode is connected to one end of the conductive unit.

[0018] This invention also provides an aerosol generating device, including a heating component as described in any of the above claims and a controller connected to the at least two conductive sheets of the heating component.

[0019] The aerosol generating device and its heating component of this utility model have at least the following beneficial effects: the fixing component is integrally injection molded with a conductive sheet and a fixing seat. The fixing component has both a fixing function and an electrical connection function. The connection with the electrode through the conductive sheet avoids the problems caused by lead wire processing. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0021] Figure 1 This is a longitudinal cross-sectional structural diagram of the aerosol generation system in some embodiments of this utility model;

[0022] Figure 2 This is a three-dimensional structural diagram of the heating component and the controller connected in the first embodiment of this utility model;

[0023] Figure 3 yes Figure 2 A schematic diagram of the longitudinal cross-sectional structure of the heating element;

[0024] Figure 4 yes Figure 3 The exploded structural diagram of the heating component is shown.

[0025] Figure 5 yes Figure 4 A schematic diagram of the exploded structure of the heating element;

[0026] Figure 6 yes Figure 5 Exploded view of the fixed component in the middle;

[0027] Figure 7 yes Figure 6 A three-dimensional structural diagram of the middle electrode connecting piece;

[0028] Figure 8 This is a three-dimensional structural schematic diagram of the electrode connecting piece in some embodiments of this utility model;

[0029] Figure 9 This is a three-dimensional structural schematic diagram of the electrode connecting piece in other embodiments of this utility model;

[0030] Figure 10 This is a three-dimensional structural diagram of the heating component in the second embodiment of this utility model;

[0031] Figure 11 yes Figure 10 A schematic diagram of the longitudinal cross-sectional structure of the heating component shown.

[0032] Figure 12 yes Figure 10 The exploded structural diagram of the heating component is shown.

[0033] Figure 13 This is a three-dimensional structural diagram of the heating component in the third embodiment of this utility model;

[0034] Figure 14 yes Figure 13 The exploded structural diagram of the heating component is shown.

[0035] Figure 15 yes Figure 13 A schematic diagram of the longitudinal cross-sectional structure of the heating component shown.

[0036] Figure 16 yes Figure 13 A schematic diagram of the welding positions of the heating components shown;

[0037] Figure 17 This is a three-dimensional structural diagram of the heating component in the fourth embodiment of this utility model. Detailed Implementation

[0038] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0039] The terms "longitudinal", "lateral", "up", "down", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, four, etc., unless otherwise explicitly specified.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] Figure 1An aerosol generation system 1 according to some embodiments of the present invention is shown. The aerosol generation system 1 may include an aerosol generation device 100 and an aerosol generation article 200. The aerosol generation article 200 is movably inserted into the aerosol generation device 100, facilitating removal and replacement with a new aerosol generation article 200 after heating is complete. The aerosol generation device 100 can heat the aerosol generation article 200 inserted therein after being powered on, to release the aerosol extract in the aerosol generation article 200 in a non-combustible state.

[0044] In some embodiments, the aerosol generating article 200 may be cylindrical. Of course, in other embodiments, the aerosol generating article 200 may also be elliptical, polygonal, or other columnar shapes. The aerosol generating article 200 includes an aerosol generating matrix 210, which may include solid materials in the form of strips, flakes, or granules made from the leaves and / or stems of plants (e.g., tobacco or tea leaves), and aroma components may be further added to the solid material.

[0045] The aerosol generating device 100 may include a housing 20 and a heating element 10 disposed within the housing 20. One end of the housing 20 has a socket 21 for inserting an aerosol generating article 200. The shape of the socket 21 is adapted to the cross-sectional shape of the aerosol generating article 200; for example, the socket 21 is circular. Of course, the socket 21 may also be circular or other shapes, as long as it allows the aerosol generating article 200 to pass through.

[0046] The heating element 10 is used to heat the aerosol generating article 200, which is at least partially inserted into the aerosol generating device 100, after being powered on.

[0047] In some embodiments, the aerosol generating device 100 further includes a battery cell 30 and a controller 40 disposed in the housing 20. The controller 40 is provided with a control circuit, which is electrically connected to both the battery cell 30 and the heating element 10 to control the power supply between the battery cell 30 and the heating element 10. Furthermore, the control circuit can also control the power output of the battery cell 30 to the heating element 10.

[0048] The heating method used by the heating component 10 is not limited. For example, it can be one or more of the following: resistance heating, electromagnetic heating, infrared heating, laser heating, microwave heating, etc.

[0049] Figures 2 to 6A heating element 10 according to a first embodiment of the present invention is shown. The heating element 10 includes a heating tube 50. The heating tube 50 is tubular, such as a cylindrical tube, and has a channel 110 formed therein. The aerosol generating article 200 can be at least partially housed in the channel 110, and the heating element 10 heats the aerosol generating article 200 housed therein after being energized.

[0050] In some embodiments, the heating element 50 can be a hollow structure with both ends open. Specifically, the heating element 50 has a first end 101 and a second end 102 arranged opposite each other in the axial direction. The first end 101 (shown as the upper end) is the end near the insertion port 21 (i.e., near the suction end of the aerosol generating device 100), and the second end 102 (shown as the lower end) is the end away from the insertion port 21. The first end 101 of the heating element 50 has an opening through which the aerosol generating article can be inserted into the channel 110.

[0051] The second end 102 of the heating element 50 may also have an opening. Of course, in other embodiments, the second end 102 of the heating element 50 may also be provided with a bottom wall, which can be used to position the aerosol generating article 200 against.

[0052] The heating element 50 may include a base tube structure 17 and a heating structure 16 disposed on the base tube structure 17. The heating structure 16 may be disposed on the inner and / or outer surfaces of the base tube structure 17, and is capable of converting electrical energy into heat energy to heat the aerosol-generated article contained in the heating element 50.

[0053] In some embodiments, the heating structure 16 may be disposed on the outer surface of the base tube structure 17. The base tube structure 17 includes a base tube 11, which may be made of a material with high thermal conductivity to better transfer the heat from the heating structure 16 to the aerosol-generating article. In some embodiments, the base tube 11 may be made of a metallic material, such as stainless steel (e.g., 430 or 316L), aluminum, aluminum alloy, etc. Metallic materials have advantages such as high thermal conductivity, low cost, and high strength.

[0054] Accordingly, the base tube structure 17 also includes an isolation layer 12 disposed between the base tube 11 and the heating structure 16, which insulatingly separates the base tube 11 from the heating structure 16. The isolation layer 12 can be made of an insulating material with a high thermal conductivity to better transfer the heat from the heating structure 16 to the aerosol-generated product. The isolation layer 12 can be an insulating glaze layer (such as a glass glaze layer), which can be prepared by dip coating sintering or other methods. In addition, by providing the isolation layer 12, the strength of the base tube 11 can be improved, which is beneficial for the thinning design of the base tube 11. Understandably, in other embodiments, an isolation layer can also be provided on the inner surface of the base tube 11.

[0055] In some embodiments, the thickness of the isolation layer 12 can be 10 μm to 50 μm (including the values ​​at both ends), for example, 20 μm to 30 μm. The wall thickness of the base tube 11 can be 0.1 mm to 0.15 mm (including the values ​​at both ends). This thickness dimension can ensure the supporting strength while facilitating the miniaturization of the base tube 11.

[0056] Of course, in other embodiments, the substrate tube 11 may also be made of an insulating material with a high thermal conductivity, such as ceramic materials (e.g., zirconium oxide), quartz glass, or other non-metallic materials. Thus, the substrate tube structure 17 may or may not include an insulating layer 12.

[0057] In other embodiments, the heating structure 16 may also be disposed on the inner side of the base tube 11. Accordingly, the base tube 11 may be made of a material with a low thermal conductivity, which is beneficial to reduce the heat diffused outward by the heating structure 16 and reduce heat loss.

[0058] In some other embodiments, the heating structure 16 may be partially disposed on the outer side of the base tube 11 and partially disposed on the inner side of the base tube 11. For example, the heating structure 16 may include a resistive heating unit disposed on the outer side of the base tube 11 and an infrared layer disposed on the inner side of the base tube 11.

[0059] The base tube 11 may include a main body 111 and a flared portion 112 disposed at one end of the main body 111. The flared portion 112 and the main body 111 may be coaxially arranged from the first end 101 to the second end 102. The aerosol generating article can be smoothly inserted into the main body 111 through the flared portion 112.

[0060] The cross-sectional area of ​​the flared portion 112 gradually decreases from the first end 101 to the second end 102. Furthermore, the flared portion 112 and the main body 111 can be smoothly connected, facilitating the insertion of the aerosol-generated article and making it easy to process and shape. The flared portion 112 can be formed with rounded corners or beveled openings; in other words, the inner wall surface of the flared portion 112 can be an arc surface or a beveled surface. Of course, in other embodiments, the inner wall surface of the flared portion 112 can also be partially an arc surface and partially a beveled surface.

[0061] In some embodiments, the cross-sections of the flared portion 112 and the main body portion 111 can be circular. The inner diameter of the flared portion 112 gradually decreases in the direction from the first end 101 to the second end 102, and the inner diameter of the main body portion 111 is equal to the inner diameter of the proximal end (the end closest to the flared portion 112) of the flared portion 112. Furthermore, the outer diameter of the flared portion 112 also gradually decreases in the direction from the first end 101 to the second end 102, and the outer diameter of the main body portion 111 is equal to the outer diameter of the proximal end of the flared portion 112.

[0062] In some embodiments, the inner diameter of the distal end (the end furthest from the flared portion 112) of the flared portion 112 is 0.5 mm to 0.25 mm larger than the inner diameter of the main body portion 111 (including both end values). That is, the inner diameter of the first end 101 of the flared portion 112 is 0.5 mm to 0.25 mm larger than the inner diameter of the proximal end of the flared portion 112 (including both end values). The height (axial length) of the flared portion 112 can be 0.3 mm to 1.2 mm (including both end values), for example, 0.5 ± 0.1 mm. The compact design of the flared portion 112 facilitates the installation and sealing of the heating element 50 in the housing 20.

[0063] The heating structure 16 is disposed on the outside of the insulating layer 12. The heating structure 16 may include a base layer 14, at least one heating unit 13 disposed on the inner side of the base layer 14, and at least two conductive units 15 disposed on the outer side of the base layer 14.

[0064] Each heating unit 13 is electrically connected to two conductive units 15, and then electrically connected to a control circuit. Specifically, each heating unit 13 includes a heating body 131 and two electrodes (a first electrode 132 and a second electrode 133) located at both ends of the heating body 131. Each heating unit 13 is electrically connected to the two conductive units 15 through the first electrode 132 and the second electrode 133, respectively.

[0065] The first electrode 132 and the second electrode 133 of each heating unit 13 can be staggered in the circumferential direction (circumferential direction of the base tube 11) of the heating tube 50. Of course, in other embodiments, the first electrode 132 and the second electrode 133 of each heating unit 13 can also be staggered in the axial direction of the heating tube 50, or the first electrode 132 and the second electrode 133 of each heating unit 13 can also be staggered in both the circumferential and axial directions of the heating tube 50.

[0066] The substrate layer 14 is made of an insulating material. In some embodiments, the substrate layer 14 can be a glass film strip or a ceramic film strip formed by casting or other methods. The thickness of the substrate layer 14 can be 90 μm to 160 μm (including the two ends), preferably 110 μm to 140 μm.

[0067] The substrate layer 14 serves as insulation and protection. It supports the heating element 13 and the conductive element 15, insulating and separating them. It also isolates the heating element 13 from the outside air, reducing the corrosive effects of oxygen and impurities on the heating element 13. The connection between at least one heating element 13 and at least two conductive elements 15 can be achieved by drilling holes (not shown) in the substrate layer 14.

[0068] The heating unit 13 includes a conductive material that can convert electrical energy into heat energy by utilizing the resistance heating effect generated when an electric current passes through the conductive material. In some embodiments, the heating unit 13 may include a metallic material, or a mixture of a metallic material and a non-metallic material (e.g., glass). At least two conductive units 15 are used to connect to the controller 40, thereby connecting at least one heating unit 13 to the controller 40. The conductive units 15 can be connected to the controller 40 via electrical connectors such as leads, conductive sheets 61, and electrode posts.

[0069] By placing the heating unit 13 and the conductive unit 15 on different sides of the base layer 14, the placement space of at least one heating unit 13 can be increased, the heating area can be increased, the heating consistency can be improved, and the suction taste consistency can be improved.

[0070] The heating element 13 can be a heating film formed by screen printing or deposition. Of course, in other embodiments, the heating element 13 can also be a mesh, array or fabric formed of conductive wires or conductive sheets.

[0071] The conductive unit 15 can be a conductive film, such as a conductive metal film (e.g., a copper film or a silver film) or a non-metallic film formed on the substrate layer 14 by screen printing. It is understood that in other embodiments, the conductive unit 15 is not limited to being formed on the substrate layer 14 by screen printing, but can also be fixed to the substrate layer 14 by adhesive bonding or by soldering.

[0072] In some embodiments, the conductive unit 15 may also have a high thermal conductivity. For example, the conductive unit 15 may be made of pure silver or a silver alloy. Silver has low resistivity, good electrical conductivity, and high thermal conductivity. With appropriate shape design, it can also achieve the effect of heat equalization, reducing the temperature difference of the heating unit 13 and uniformly distributing heat.

[0073] In some embodiments, there are multiple heating units 13 (e.g., two, three, or more). Each heating unit 13 is electrically connected to a control circuit. Alternatively, multiple heating units 13 can be electrically connected to the control circuit in parallel, and the control circuit can control the power supply to or off of each heating unit 13 individually. The shapes of the heating units 13 may be the same or different.

[0074] Multiple heating units 13 can be arranged at intervals along the axial and / or circumferential directions of the heating tube 50, enabling zoned heating of the aerosol generating matrix. This results in more concentrated local energy in the aerosol generating matrix, faster smoke generation, shorter preheating time, reduced energy consumption, a smaller maximum discharge current for the battery cell, and easier battery cell selection. Compared to a single heating unit 13, the matrix area corresponding to each heating unit 13 is smaller with multiple heating units 13, resulting in a more uniform temperature field in the heating area and thus improving the inhalation experience of the aerosol generating matrix. Furthermore, the heating units 13 can heat different areas of the aerosol generating matrix at different times depending on the heating status, thereby improving consistency during the inhalation process.

[0075] In some embodiments, multiple heating elements 13 are spaced apart along the axial direction of the heating tube 50, and each heating element 13 extends at least partially along the circumference of the heating tube 50 in a bent or straight manner. In this embodiment, the heating body 131 of each heating element 13 extends uniformly in a serpentine shape along the circumference of the heating tube 50. The serpentine shape is beneficial for increasing the heating area, while the uniform serpentine shape is beneficial for the uniform distribution of heat in the circumferential direction.

[0076] In some embodiments, the first electrodes 132 of the plurality of heating units 13 are all connected to the same conductive unit 15, and the second electrodes 133 of the plurality of heating units 13 are respectively connected to other conductive units 15, thereby reducing the number of conductive units 15 required.

[0077] In this embodiment, there are four heating units 13, which are spaced apart along the axial direction of the heating tube 50 (the axial direction of the base tube 11). In the direction from the first end 101 to the second end 102, the four heating units 13 are respectively the first heating unit 13a, the second heating unit 13b, the third heating unit 13c, and the fourth heating unit 13d.

[0078] There are five conductive units 15, namely the first conductive unit 151, the second conductive unit 152, the third conductive unit 153, the fourth conductive unit 154, and the fifth conductive unit 155.

[0079] The first electrodes 132 of the first heating unit 13a, the second heating unit 13b, the third heating unit 13c, and the fourth heating unit 13d are all connected to the first conductive unit 151. The second electrodes 133 of the first heating unit 13a, the second heating unit 13b, the third heating unit 13c, and the fourth heating unit 13d are respectively connected to the second conductive unit 152, the third conductive unit 153, the fourth conductive unit 154, and the fifth conductive unit 155. In this way, the four heating units 13 only need to be connected to the control circuit through five conductive units 15.

[0080] In some embodiments, the heating structure 16 can be prepared using a roll-to-roll process, which can be formed by winding a sheet-like heating structure onto a substrate tube structure 17. The specific preparation method of the heating structure 16 is as follows: First, a sheet-like substrate layer 14 is prepared by processes such as tape casting. Heating units 13 are printed on one side of the sheet-like substrate layer 14, and conductive units 15 are printed on the other side of the sheet-like substrate layer 14. Then, the sheet-like substrate layer 14 with the printed heating units 13 and conductive units 15 is wound onto a substrate tube 11 and sintered to form the structure.

[0081] The starting order of the first heating unit 13a, the second heating unit 13b, the third heating unit 13c, and the fourth heating unit 13d can be set arbitrarily as needed.

[0082] Considering that the first heating unit 13a is closest to the suction end of the aerosol generating device 100, it is preferable to start the first heating unit 13a first for heating, which can achieve the effect of rapid smoke production. The fourth heating unit 13d, which is furthest from the suction end, can be started last. The residual heating temperature of the previously started heating unit 13 can preheat the aerosol generating matrix area corresponding to the fourth heating unit 13d, thus making condensation less likely to occur.

[0083] In some embodiments, the first heating unit 13a, the second heating unit 13b, the third heating unit 13c, and the fourth heating unit 13d may be activated sequentially.

[0084] In some embodiments, the heating unit 13 (first heating unit 13a) near the first end 101 of the base tube 11 has the smallest projected area on the base tube 11, that is, the heating area is the smallest. This allows energy to be concentrated to heat a small portion, achieving a rapid smoke-generating effect and reducing preheating time. Furthermore, the reduced heating area decreases the capacity required by the battery cell 30, thereby reducing the maximum discharge current to the battery cell 30 and simplifying battery cell selection.

[0085] Typically, the heating area of ​​the heating unit 13 can be reduced by decreasing one or more of the line length, line width, height, etc. of the heating unit 13.

[0086] For example, in some embodiments, the height of the heating unit 13 (e.g., the first heating unit 13a) near the first end 101 of the base tube 11 in the axial direction is less than the height of the other heating units 13 in the axial direction of the base tube 11, such that the projected area of ​​the heating unit 13 near the first end 101 of the base tube 11 on the base tube 11 is less than the projected area of ​​the other heating units 13 on the base tube 11. As another example, the height of the plurality of heating units 13 in the axial direction of the base tube 11 gradually decreases from the first end 101 to the second end 102. Specifically, in this embodiment, the heights of the first heating unit 13a, the second heating unit 13b, the third heating unit 13c, and the fourth heating unit 13d in the axial direction of the base tube 11 gradually increase.

[0087] For example, the line length of the heating unit 13 (e.g., the first heating unit 13a) near the first end 101 of the substrate tube 11 is less than the line length of the other heating units 13. Alternatively, the line length of the multiple heating units 13 gradually decreases from the first end 101 to the second end 102.

[0088] In some embodiments, the line width of the heating unit 13 can be 0.4mm to 1.2mm, preferably about 1.0mm. Within this range, it can avoid the line being too narrow, which would easily break and cause an open circuit, and avoid the line being too wide, which would easily shrink and cause the membrane tape to crack.

[0089] Each conductive unit 15 includes a conductive connection portion 150. The conductive connection portion 150 mainly performs the function of electrical connection. The line width of the conductive connection portion 150 is small to reduce energy consumption and save materials and costs. In some embodiments, the line width of the conductive connection portion 150 can be 1.2mm to 2.5mm, preferably about 2.0mm. If the line width of the conductive connection portion 150 is too large, it will easily increase energy consumption; if it is too small, it will be difficult to ensure the reliability of the connection with electrical connectors such as leads, electrode posts, and conductive sheets 61.

[0090] At least one conductive unit 15 includes a heat-spreading section 156. The heat-spreading section 156 primarily performs heat-spreading functions and has a relatively large line width. The heat-spreading section 156 extends circumferentially and axially along the base tube structure 17, thereby obtaining a larger heat-spreading area and better heat-spreading effect. The heat-spreading section 156 can cover at least a portion of the heating unit 13, thereby reducing the temperature difference of the corresponding heating unit 13 and playing a role in uniform heat distribution. Preferably, the heat-spreading section 156 can cover at least a portion of the heating unit 13 closest to the suction end (first heating unit 13a), improving the consistency during the first suction.

[0091] Of course, both the conductive connection part 150 and the heat-spreading part 156 can simultaneously perform the functions of heat spreading and electrical conduction. By incorporating these two functions into one material, costs can be saved.

[0092] In some embodiments, the conductive connection portion 150 and the heat-spreading portion 156 can be printed and formed in one step using the same material, such as silver paste screen printing and sintering. The process is simple and silver has a high thermal conductivity.

[0093] In other embodiments, the conductive connection portion 150 and the heat-spreading portion 156 can also be arranged in two layers. The conductive connection portion 150 uses one material (e.g., silver paste), and the heat-spreading portion 156 uses another material (e.g., graphite sheet). This can reduce the difficulty of matching the sintering process and improve the yield.

[0094] In this embodiment, in order to reduce energy consumption, only the second conductive unit 152 and the third conductive unit 153 are provided with heat equalization section 156 to heat the first heating unit 13a and the second heating unit 13b closest to the suction end, respectively.

[0095] Specifically, the first conductive unit 151 is simultaneously connected to the first electrodes 132 of the four heating units 13, and may only have conductive connection portions 150. The first conductive unit 151 may extend linearly along the axial direction of the base tube structure 17.

[0096] The fourth conductive unit 154 and the fifth conductive unit 155 only have a conductive connection portion 150. The conductive connection portion 150 first extends along the axial direction of the base tube structure 17, and then bends and extends along the circumferential direction of the base tube structure 17.

[0097] Both the second conductive unit 152 and the third conductive unit 153 include a conductive connection portion 150 and a heat-spreading portion 156. The conductive connection portion 150 can extend linearly along the axial direction of the base tube structure 17, and the heat-spreading portion 156 extends from the upper end of the conductive connection portion 150 along the circumferential direction of the base tube structure 17.

[0098] The projection of the heat-spreading portion 156 of the second conductive unit 152 onto the base tube structure 17 can cover most of the first heating unit 13a, reducing the temperature difference of the first heating unit 13a. Preferably, the axial height of the heat-spreading portion 156 of the second conductive unit 152 on the base tube structure 17 is comparable to (e.g., equal to, slightly greater than, or slightly less than) the axial height of the first heating unit 13a on the base tube structure 17. The two axial end faces of the heat-spreading portion 156 of the second conductive unit 152 can be approximately at the same height as the two axial end faces of the first heating unit 13a. This ensures good heat spread and saves materials while reducing energy consumption. For example, the axial height of the first heating unit 13a on the base tube structure 17 is 2.6 ± 0.1 mm, and the axial height of the heat-spreading portion 156 of the second conductive unit 152 on the base tube structure 17 is also 2.6 ± 0.1 mm.

[0099] Similarly, the projection of the heat-spreading portion 156 of the third conductive unit 153 onto the base tube structure 17 can cover most of the second heating unit 13b, reducing the temperature difference of the second heating unit 13b. Preferably, the axial height of the heat-spreading portion 156 of the third conductive unit 153 on the base tube structure 17 is comparable to (e.g., equal to, slightly greater than, or slightly less than) the axial height of the second heating unit 13b on the base tube structure 17. The two axial end faces of the heat-spreading portion 156 of the third conductive unit 153 can be approximately at the same height as the two axial end faces of the second heating unit 13b, respectively. This ensures good heat spread and saves materials while reducing energy consumption. For example, the axial height of the second heating unit 13b on the base tube structure 17 is 4.2 ± 0.1 mm, and the axial height of the heat-spreading portion 156 of the third conductive unit 153 on the base tube structure 17 is also 4.2 ± 0.1 mm.

[0100] The heating element 50 has multiple electrodes 157 on its outer side. Generally, each electrode 157 is located at the lower end of each conductive unit 15. Each conductive unit 15 can be connected to the controller 40 through the electrodes 157.

[0101] Electrodes 157 are distributed at the bottom of the heating tube 50. The distance between the electrodes 157 and the lower end face of the heating tube 50 can be 1.0mm to 8.0mm, which is beneficial for processing and for other structures (such as cylindrical aerogel) to wrap the heating tube 50.

[0102] In some embodiments, the heating element 10 further includes a fixing element 60. The fixing element 60 includes a fixing seat 62, on which the lower end of the heating element 50 can be mounted and installed in the housing 20 via the fixing seat 62.

[0103] The mounting base 62 can be made of plastic, or other insulating materials such as ceramic. Furthermore, the mounting base 62 can be made of a material with low thermal conductivity to reduce heat transfer. The mounting base 62 can be a single piece or assembled from two or more components.

[0104] A mounting cavity 625 is formed on the fixing base 62, and the lower end of the heating tube 50 can be embedded in the mounting cavity 625. The mounting cavity 625 can be coaxially arranged with the fixing base 62, but is not limited to being coaxially arranged.

[0105] The mounting base 62 may include a cylindrical sidewall 621 and a bottom wall 622 disposed at one end of the cylindrical sidewall 621. The cylindrical sidewall 621 and the bottom wall 622 together define the mounting cavity 625. The bottom wall 622 can be used to provide abutment and limit when the aerosol generating article 200 is inserted.

[0106] In some embodiments, a stepped surface 626 may be formed on the inner wall surface of the mounting cavity 625, and the stepped surface 626 is spaced apart from the bottom wall 622. The lower end face of the heating tube 50 may abut against the stepped surface 626. Of course, in other embodiments, the stepped surface 626 may not be formed in the mounting cavity 625, and the lower end face of the heating tube 50 may directly abut against the bottom wall 622.

[0107] The cylindrical sidewall 621 may include a first cylindrical portion 6211 with a smaller outer diameter and a second cylindrical portion 6212 with a larger outer diameter. The second cylindrical portion 6212 is located at the lower end of the first cylindrical portion 6211 and can be used for installation and positioning when the mounting base 62 is engaged with other components.

[0108] In some embodiments, the fixing component 60 includes a conductive sheet 61, and the electrode 157 is electrically connected to the controller 40 through the conductive sheet 61.

[0109] The conductive sheet 61 can be a metal sheet with good electrical conductivity, such as a copper sheet. The conductive sheet 61 is preferably a spring sheet, which can better connect to the electrode 157 and the controller 40 through elastic force. Of course, in other embodiments, the conductive sheet 61 can also be rigid and without elastic force.

[0110] In some embodiments, the conductive sheet 61 can be electrically connected to the electrode 157 and / or the controller 40 in a contact manner, which can avoid problems caused by wire processing (soldering, etc.) and reduce the total cost of the heating component 10. In addition, the conductive sheet 61 can be separated from the electrode 157 and / or the controller 40, thereby reducing the cost of use by replacing some components.

[0111] In other embodiments, the conductive sheet 61 and the electrode 157 and / or the conductive sheet 61 and the controller 40 can also be welded together (e.g., soldering or laser welding), which can avoid the problem of reduced electrical connection reliability when the heating component 10 is used for a long time in a high-temperature environment.

[0112] The conductive sheet 61 can be fixed to the fixing base 62. Specifically, the conductive sheet 61 can be partially embedded in the fixing base 62 for fixation. In some embodiments, the conductive sheet 61 and the fixing base 62 can be integrally combined by injection molding to form an integral fixing component 60, which makes the fixing of the conductive sheet 61 more secure and improves the reliability of the electrical connection. Of course, in other embodiments, the conductive sheet 61 and the fixing base 62 can also be fixed to each other by snap-fit ​​connection, riveting, or other methods.

[0113] The fixing component 60 has a conductive sheet 61 and a fixing seat 62 that are fixed to each other, so that the fixing component 60 has both a fixing function, which can fix the heating tube 50 through the fixing seat 62, and an electrical connection function, which can achieve electrical connection with the heating tube 50 through the conductive sheet 61.

[0114] The conductive sheet 61 may also have a portion located outside the mounting base 62 for connection to the electrode 157, and another portion located outside the mounting base 62 for connection to the controller 40.

[0115] Specifically, the conductive sheet 61 may include a body portion 612 and a first connecting portion 611 and a second connecting portion 613 located at both ends of the body portion 612. The body portion 612 is embedded in the fixing base 62. The first connecting portion 611 is located outside the fixing base 62, specifically, it can protrude from the upper end of the cylindrical sidewall 621, thereby enabling it to be electrically connected to the electrode 157. The second connecting portion 613 is located outside the fixing base 62, specifically, it can protrude from the bottom wall 622, thereby enabling it to be electrically connected to the controller 40. The second connecting portion 613 can be directly connected to the circuit board of the controller 40 by means of welding or contact, or it can be connected to the controller 40 by other connectors.

[0116] The number of conductive sheets 61 can be the same as the number of electrodes 157, with multiple conductive sheets 61 connected one-to-one with multiple electrodes 157. In this embodiment, there are five conductive sheets 61, namely conductive sheet 61a, conductive sheet 61b, conductive sheet 61c, conductive sheet 61d, and conductive sheet 61e.

[0117] The conductive sheets 61 can be arranged at uniform or non-uniform intervals along the circumference of the heating tube 50. A certain interval is maintained between each conductive sheet 61 to ensure mutual insulation.

[0118] The conductive sheet 61 can also be a sheet with at least one bend, such as conductive sheet 61a, conductive sheet 61b, conductive sheet 61c, conductive sheet 61d, and conductive sheet 61e. For example, the body portion 612 of the conductive sheet 61 includes a first portion 6121 and a second portion 6122 formed by laterally bending the lower end of the first portion 6121. The first portion 6121 can be embedded in the cylindrical sidewall 621, and the second portion 6122 can be embedded in the bottom wall 622. The second connecting portion 613 can be formed by vertically bending the end of the second portion 6122 away from the first portion 6121. The first connecting portion 611 can also be bent to form a V-shape, which is beneficial for better electrical connection with the electrode 157.

[0119] Of course, in other embodiments, the conductive sheet 61 can also be in the form of a flat sheet, for example... Figure 8 The conductive sheet 61f shown and Figure 9 The conductive sheet shown weighs 61g.

[0120] The conductive sheet 61 can be designed in different shapes and / or made of different materials according to different requirements such as thermal conductivity, electrical conductivity, signal transmission, and signal detection. For example, Figure 7 As shown, if the conductive sheet 61 is mainly used for conducting electricity, then under the premise of ensuring the strength of the conductive sheet 61, the heat flow path of the conductive sheet 61 can be reduced by drilling holes, cutting grooves, etc., thereby reducing the heat transfer of the conductive sheet 61 and reducing heat loss.

[0121] In some embodiments, a plurality of through holes 610 may be formed on the body portion 612 of the conductive sheet 61. The through holes 610 penetrate the body portion 612 along the thickness direction, and the plurality of through holes 610 may be arranged at intervals along the length direction of the body portion 612. The through holes 610 can reduce heat conduction of the conductive sheet 61. In addition, when the conductive sheet 61 and the fixing base 62 are injection molded, the through holes 610 can also improve the bonding strength between the conductive sheet 61 and the fixing base 62.

[0122] The first connecting part 611 and the second connecting part 613 may or may not have through holes 610, depending on the width of the connecting part. When the width of the connecting part is small, through holes 610 may not be provided on the connecting part to ensure the reliability of the electrical connection. However, when the width of the connecting part is large, through holes 610 may be provided on the connecting part.

[0123] In some embodiments, the body portion 612 of the conductive sheet 61 may also be provided with a groove 614. By providing the groove 614, the body portion 612 can be locally narrowed, which can also reduce heat conduction. There may be multiple grooves 614, which are spaced apart along the length of the body portion 612. The grooves 614 may extend inward from both sides of the width of the body portion 612 to locally narrow the body portion 612; specifically, the grooves 614 may be symmetrically provided on both sides of the width of the body portion 612. Of course, in other embodiments, the grooves 614 may extend inward only from one side of the width of the body portion 612.

[0124] The slot 614 and the through hole 610 are staggered along the length of the conductive sheet 61, which reduces the impact on the strength of the conductive sheet 61. By setting the slot 614 and the through hole 610, a multi-stage filtration can be formed on the conductive sheet 61, reducing the heat conduction of the conductive sheet 61, thereby reducing the heat conducted from the heating element 50 to the outside of the conductive sheet 61.

[0125] like Figure 7 As shown, the main body 612 has four slots 614 spaced apart along its length, and the main body 612 of the conductive sheet 61a has six through holes 610 spaced apart along its length. One through hole 610 can be provided between every two adjacent slots 614, or multiple (e.g., two or three) through holes 610 can be provided. The four slots 614 can form a four-stage filtration system, thereby reducing the heat conducted from the heating element 50 to the outside by the conductive sheet 61.

[0126] like Figure 8 and Figure 9 As shown, different shapes can be designed to ensure the signal detection effect of the conductive sheet 61. The first connecting part 611 is the detection end, and the second connecting part 613 is the connection end. To obtain better signal detection performance, the area of ​​the detection end should be as large as possible, while the area of ​​the connection end should be as small as possible. Considering that the thickness of the conductive sheet 61 is roughly uniform, the width of the detection end can generally be made as large as possible, while the width of the connection end can be made as small as possible.

[0127] exist Figure 8 In the conductive sheet 61f, the first connecting portion 611 is not widened, and the second connecting portion 613 is not narrowed; that is, the widths of the first connecting portion 611, the second connecting portion 613, and the portion 6124 of the main body 612 without the notch 614 are equal. Figure 9In the conductive sheet 61g, the first connecting portion 611 is widened, and the second connecting portion 613 is narrowed. Specifically, the width of the first connecting portion 611 is greater than the width of the portion 6124 of the main body 612 without the notch 614, while the width of the second connecting portion 613 is less than the width of the portion 6124 of the main body 612 without the notch 614. Compared to the conductive sheet 61f, the conductive sheet 61g achieves better signal detection performance.

[0128] Figures 10 to 13 The heating component 10 in the second embodiment of this embodiment is shown. In this embodiment, the heating component 10 also includes at least a heat insulation cylinder 70 sleeved outside the heating tube 50 and an end cap 80 disposed at the end of the heating tube 50 away from the fixing seat 62.

[0129] The end cap 80 can be made of a material with low thermal conductivity, which helps to reduce the heat conducted from the heating element 50 to the outside through the end cap 80. A through hole 83 is formed inside the end cap 80, through which the aerosol generating product 200 can pass and be inserted into the heating element 50.

[0130] The end cap 80 can be abutted against the upper end face of the heating tube 50, or it can be sleeved onto the upper end of the heating tube 50. In this embodiment, the end cap 80 includes a cylindrical body 81, the lower end of which is sleeved over the upper end of the heating tube 50.

[0131] The heat insulation cylinder 70 uses heat insulation materials, such as aerogel. The heat insulation cylinder 70 can effectively reduce the heat transferred from the heating element 50 to the outer casing 20.

[0132] The upper end of the cylinder 81 can protrude outward to form a flange 82. The heat insulation cylinder 70 can be sleeved on the cylinder 81, the heating tube 50 and the first cylindrical part 6211 of the fixing seat 62. The lower end of the heat insulation cylinder 70 abuts against the upper end surface of the second cylindrical part 6212, and the upper end of the heat insulation cylinder 70 abuts against the flange 82, thereby fixing the heat insulation cylinder 70.

[0133] By using conductive sheet 61 instead of lead wire, more space can be provided for heat insulation cylinder 70, making installation easier. Heat insulation cylinder 70 can better wrap around heating tube 50, thereby achieving better heat insulation effect.

[0134] Furthermore, in this embodiment, an electrode connecting piece 19 is also provided on the outer side of the heating tube 50. The electrode connecting piece 19 is disposed on the outer side of the electrode 157 and is electrically connected to the electrode 157. Specifically, the electrode connecting piece 19 and the electrode 157 can at least partially overlap to improve the reliability of the electrical connection.

[0135] The electrode connecting piece 19 can be a metal sheet with good electrical conductivity. In some embodiments, the electrode connecting piece 19, the electrode 157, and the connecting material (e.g., solder or adhesive) used to connect the electrode connecting piece 19 and the electrode 157 can be made of the same material with the same or similar coefficients of thermal expansion, facilitating bonding by welding, sintering, or other methods. Preferably, the electrode connecting piece 19 is a silver sheet (including pure silver sheet and silver alloy sheet), the electrode 157 is a silver film, and the connecting material used to connect the electrode connecting piece 19 and the electrode 157 is also a silver material. Silver material has good bonding strength, low resistivity, and good electrical conductivity.

[0136] In some embodiments, the electrode connecting piece 19 and the electrode 157 can be welded together. The electrode 157 is sintered from silver paste (including pure silver paste and silver alloy paste), and the electrode connecting piece 19 is a silver sheet. The solder used to connect the electrode connecting piece 19 and the electrode 157 is silver paste. In this way, the electrode connecting piece 19 and the electrode 157 are less likely to detach due to local high temperature during welding.

[0137] In other embodiments, the electrode connecting piece 19 and the electrode 157 can also be sintered together. The adhesive material used to connect the electrode connecting piece 19 and the electrode 157 is silver paste, which has the same or similar coefficient of thermal expansion as the electrode connecting piece 19 and the electrode 157, and can be sintered together.

[0138] Of course, in other embodiments, the electrode connecting piece 19, the electrode 157, and the connecting material used to connect the electrode connecting piece 19 and the electrode 157 can also be made of different materials, as long as a reliable connection between the electrode connecting piece 19 and the electrode 157 can be achieved.

[0139] The conductive sheet 61 is electrically connected to the electrode connecting piece 19, and then electrically connected to the electrode 157 through the electrode connecting piece 19.

[0140] The conductive sheet 61 and the electrode connecting sheet 19 can be fixedly connected together by welding or sintering, or the conductive sheet 61 and the electrode connecting sheet 19 can also be electrically connected by contact or other means.

[0141] Because the electrode 157 is very thin, typically only 10μm to 30μm (e.g., 20μm), and the conductive sheet 61 and the electrode 157 are generally made of different materials, welding the conductive sheet 61 and the electrode 157 is quite difficult. However, by providing the electrode connecting piece 19, the welding difficulty can be reduced.

[0142] If a contact conduction method is used, the conductive sheet 61 may easily scratch the electrode 157 when it comes into contact with the electrode 157. By setting the electrode connecting piece 19, the conductive sheet 61 can be made to contact and conduct with the electrode connecting piece 19, which can also avoid scratching damage to the electrode 157.

[0143] In this embodiment, the welding point of the conductive sheet 61 and the electrode connecting piece 19 coincides with the position of the electrode 157. Specifically, the lower end surface of the electrode connecting piece 19 is flush with the lower end surface of the electrode 157, and the upper end of the conductive sheet 61 is welded to the lower end of the electrode connecting piece 19.

[0144] Of course, in other embodiments, the solder joint can be moved away from the electrode 157 by extending a portion of the electrode connecting piece 19 beyond the electrode 157, thereby avoiding adverse effects on the electrode 157 during the soldering of the conductive piece 61 and the electrode connecting piece 19.

[0145] Figures 14 to 16 The heating component 10 in the third embodiment of this example is shown. The difference between this and the second embodiment is that the electrode connecting piece 19 in this embodiment includes a first electrode portion 191 that overlaps with the electrode 157 and a second electrode portion 192 that does not overlap with the electrode 157. The conductive sheet 61 can be soldered to the second electrode portion 192. This allows the solder joint to be offset from the electrode 157, avoiding the problem of the electrode 157 easily detaching due to high temperature or force caused by the solder joint coinciding with the electrode 157.

[0146] Specifically, in this embodiment, the second electrode portion 192 is located at the lower end of the first electrode portion 191 (the end facing the second end 102). The extending direction of the conductive sheet 61 is substantially parallel to the axial direction of the heating element 10. The distance d1 between the lower end face of the electrode 157 and the lower end face of the substrate tube structure 17 can be 3mm to 8mm, preferably about 5.5mm or 6mm. The second electrode portion 192 extends from the first electrode portion 191 toward the lower end face of the substrate tube structure 17, but there is a certain gap between them. In some embodiments, the distance d2 between the lower end face of the electrode connecting piece 19 and the lower end face of the substrate tube structure 17 can be 0.1mm to 2mm, preferably about 0.5mm or 1mm. Generally, an excessively large size will lead to an increase in the size of the heating element 10, which is not conducive to miniaturization design; an excessively small size is not conducive to processing.

[0147] Of course, in other embodiments, the second electrode portion 192 may also be located at the upper end or the lateral end of the first electrode portion 191, or the second electrode portion 192 may also be inclined or bent, as long as the second electrode portion 192 does not overlap with the electrode 157.

[0148] The first electrode portion 191 overlaps with the electrode 157, and the first electrode portion 191 and the electrode 157 can be welded together (e.g., spot welding or laser welding). The length d3 of the first electrode portion 191 can be 1mm to 4mm, preferably around 2mm. A length that is too large will increase material costs, while a length that is too small will make processing difficult.

[0149] The electrode connecting piece 19, the electrode 157, and the solder used for welding the electrode connecting piece 19 and the electrode 157 are preferably made of the same material. For example, the electrode 157 is sintered from silver paste, the electrode connecting piece 19 is a silver sheet, and the solder is silver paste. In this way, the electrode connecting piece 19 and the electrode 157 are less likely to detach due to local high temperature during welding.

[0150] Of course, in other embodiments, the electrode connecting piece 19 and the electrode 157 can also be sintered together using an adhesive material (e.g., silver paste).

[0151] The conductive sheet 61 and the second electrode portion 192 are also partially overlapped to facilitate welding (e.g., spot welding, soldering, or laser welding) or sintering connections. The connection point 18 connecting the conductive sheet 61 and the second electrode portion 192 (e.g., the solder joint where the conductive sheet 61 and the second electrode portion 192 are welded) can be selected at the lower end of the second electrode portion 192 (i.e., the end of the second electrode portion 192 away from the first electrode portion 191), so that the connection point 18 is as far away from the electrode 157 as possible. Considering the diameter requirements of the solder joint and the overall size requirements of the heating element 10, the length d4 of the overlapping portion between the conductive sheet 61 and the second electrode portion 192 can be 0.5 to 2 mm, preferably about 1 mm.

[0152] The length d5 ​​of the second electrode portion 192 can be 2.5mm to 6mm, for example, about 4mm. By selecting an appropriate size range, a suitable distance is formed between the connection point 18 and the first electrode portion 191 / electrode 157, for example, at least 2mm (preferably 3mm), reducing the adverse effects on the electrode 157 during the welding of the conductive sheet 61 and the second electrode portion 192. During the welding process of the conductive sheet 61 and the second electrode portion 192, the electrode 157 is not directly heated or compressed, and the electrode 157 is not easily detached.

[0153] Of course, in other embodiments, the second electrode portion 192 is not necessarily connected to the conductive sheet 61; it can be connected to other electrical connectors. For example, in Figure 17 In the embodiment shown, the second electrode portion 192 is connected to the lead wire 63, and the connection point 18 (e.g., the solder joint where the second electrode portion 192 and the lead wire 63 are welded) is also offset from the electrode 157, so that the electrode 157 will not be adversely affected during the welding process.

[0154] The above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A heating assembly for an aerosol-generating device, the heating assembly comprising: The heating assembly (10) comprises: a base tube structure (17) having a first end (101) for insertion of an aerosol generating article and a second end (102) opposite to the first end (101); a heating structure (16) disposed on an outer side of the base tube structure (17) and comprising at least two electrodes (157); and a fixing assembly (60) disposed at the second end (102) of the base tube structure (17); the fixing assembly (60) comprises a fixing seat (62) and at least two conductive sheets (61) integrally injection molded with the fixing seat (62), and the at least two conductive sheets (61) are electrically connected with the at least two electrodes (157) respectively.

2. The heat generating component of claim 1, wherein, The conductive sheet (61) is a spring sheet.

3. The heat generating component of claim 1, wherein, The conductive sheet (61) comprises a body portion (612) and a first connecting portion (611) and a second connecting portion (613) respectively located at both ends of the body portion (612), the body portion (612) is embedded in the fixing seat (62), the first connecting portion (611) and the second connecting portion (613) are both located outside the fixing seat (62), and the first connecting portion (611) is electrically connected with the electrode (157).

4. The heat generating assembly of claim 3, wherein, When the conductive sheet (61) is used for signal detection, the area of the first connecting portion (611) is greater than the area of the second connecting portion (613).

5. The heat generating component of claim 3, wherein, A plurality of through holes (610) are arranged on the body portion (612) in the length direction, and / or a plurality of cutting grooves (614) are arranged on the body portion (612) in the length direction.

6. The heat generating assembly of claim 5, wherein, The cutting grooves (614) and the through holes (610) are arranged staggered in the length direction of the body portion (612).

7. A heat generating assembly according to any of claims 1-6, characterized in that The heating structure (16) comprises at least three heating units (13), and the electrodes (157) are at least four, each of the heating units (13) is connected with two electrodes (157), the conductive sheet (61) is at least four, and the at least four conductive sheets (61) are connected with the at least four electrodes (157) one by one.

8. The heat generating component of claim 6, wherein, The at least three heating units (13) are arranged spaced apart in the axial direction of the base tube structure (17).

9. A heat generating component according to any of claims 1-6, characterized in that The heating structure (16) comprises a substrate layer (14), at least one heating unit (13) disposed on the inner side of the substrate layer (14), and at least two conductive units (15) disposed on the outer side of the substrate layer (14) and electrically connected with the at least one heating unit (13), and the electrodes (157) are connected with one end of the conductive units (15).

10. An aerosol-generating device comprising: The heating assembly (10) comprises: The heating assembly (10) comprises: and a controller (40) connected with the at least two conductive sheets (61) of the heating assembly (10).

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