Heating assembly and aerosol generating device

Abstract

The utility model provides a heating assembly and an aerosol generating device, the heating assembly comprises a heating body and a pipe body, and the heating body is arranged on the pipe body; the heating body comprises a heating base body, an infrared emission coating and a conductive pin, the infrared emission coating is arranged on the surface of the heating base body, the heating base body is heated after being powered on and excites the infrared emission coating to radiate infrared light waves, the infrared light waves can penetrate through the tube body, the conductive pin is connected to the heating base body, at least part of the conductive pin is in a sheet shape, and the conductive pin is arranged in the tube body. Therefore, the bending direction of the conductive pin during bending can be fixed, and the assembly tolerance of the heating assembly is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generation, and in particular to a heating component and an aerosol generating device. Background Art

[0002] In a heat-not-burn device, circumferential heating usually involves the heating component transferring heat to the aerosol-generating product through heat conduction. The aerosol-generating product generally atomizes within 350°C, but this heat transfer method requires that the temperature of the heating component cannot be too high, otherwise the aerosol-generating product may burn and affect the user's smoking experience, and preheating for more than 15 seconds is required before smoking to ensure that the aerosol-generating product emits smoke quickly.

[0003] Therefore, in some prior arts, an infrared emitting layer is coated on the surface of the heating element, and infrared light waves are emitted by the infrared emitting layer to perform heating. At this time, the heating element is generally arranged on a light-transmitting heating tube, and current is passed through a conductive pin. However, the cross-sectional area of ​​the conductive pin is generally circular, so that the bending direction of the conductive pin is not fixed when it is bent, and the assembly tolerance of the heating component is large.

[0004] Application Content

[0005] To solve the problem that the bending direction of the conductive pins of the heating component is not fixed and the assembly tolerance of the heating component is large.

[0006] The present application provides a heating component, including a heating element and a tube body, wherein the heating element is arranged on the tube body; the heating element includes a heating base, an infrared emitting coating and a conductive pin, wherein the infrared emitting coating is arranged on the surface of the heating base, and when the heating base is energized, it is heated and excites the infrared emitting coating to radiate infrared light waves, the tube body allows the infrared light waves to pass through, the conductive pin is connected to the heating base, and at least part of the conductive pin is in a sheet shape.

[0007] The present application provides a heating component, wherein the thickness of the conductive pin is 0.05 mm-0.25 mm; and / or the width of the conductive pin is 0.5 mm-2.0 mm.

[0008] The present application provides a heating component, wherein the tube body comprises a first tube body and a second tube body, wherein the second tube body is disposed outside the first tube body, wherein the first tube body and the second tube body jointly define a first accommodating cavity, wherein the heating element is located in the first accommodating cavity, and wherein the first tube body defines an insertion cavity for an aerosol generating product to pass through.

[0009] The present application provides a heating component. The conductive pin includes a first section and a second section connected to each other. The first section is connected to the heating base body. One end of the second section is located inside the first accommodation cavity, and the other end of the second section is located outside the first accommodation cavity. The second section is in a sheet shape.

[0010] The present application provides a heating component. The first section is made of nickel; and / or, the second section is a molybdenum sheet, a nickel-steel alloy sheet or a Fe-Ni-Co alloy sheet.

[0011] The present application provides a heating component. The conductive pin includes a molybdenum sheet, and a nickel layer is plated on the surface of the molybdenum sheet. The nickel layer is located inside the first accommodation cavity and is connected to the heating base body.

[0012] The present application provides a heating component. The two ends of the first tube body and the second tube body are connected by high-temperature melting.

[0013] The present application provides a heating component. The first accommodation cavity is filled with an inert gas;

[0014] and / or, the inside of the first accommodation cavity is in negative pressure; and / or the vacuum degree inside the first accommodation cavity is lower than 10 -2 Pa.

[0015] The present application provides a heating component. There is a gap between the heating element and the second tube body; and / or the distance between the heating element and the second tube body is 0.05 mm - 1 mm.

[0016] The present application provides a heating component. A reflective layer is provided on the surface of the second tube body, and the reflective layer includes an aluminum layer or a chromium layer.

[0017] The present application provides a heating component. The heating element and the first tube body are in interference fit;

[0018] and / or, the thickness of the first tube body or the second tube body is 0.1 mm - 0.5 mm.

[0019] The present application provides a heating component. The tube body is made of at least one single crystal or polycrystal light-transmitting material among diamond, spinel, quartz glass, zinc selenide, gallium arsenide, gallium phosphide, zinc selenide, zinc sulfide and magnesium fluoride;

[0020] and / or, the heating base body includes nickel-chromium alloy, iron-chromium alloy, stainless steel or tungsten.

[0021] The present application provides an aerosol generating device. The heating base body is an annular metal mesh formed by etching.

[0022] The present application provides a heating component. The conductive pins include a first conductive pin and a second conductive pin, and the first conductive pin and the second conductive pin are evenly distributed in the circumferential direction of the heating base body.

[0023] The present application provides a heating component, and the conductive pins are located on the inner surface or the outer surface of the heating base body.

[0024] The present application provides an aerosol generating device, which includes a battery assembly and the above-mentioned heating component, and the battery assembly supplies electric energy to the heating component.

[0025] At least part of the conductive pins of the heating component provided by the present application is in a sheet shape, so that the bending direction of the conductive pins during bending can be fixed, and the assembly tolerance of the heating component can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplary illustrations do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the drawings in the drawings do not constitute a proportional limitation.

[0027] Figure 1 It is a schematic diagram of a heating component according to an embodiment of the present application;

[0028] Figure 2 It is a schematic diagram of a heating component according to an embodiment of the present application;

[0029] Figure 3 It is a schematic diagram of a heating element according to an embodiment of the present application;

[0030] Figure 4 It is a schematic diagram of an aerosol generating device according to an embodiment of the present application.

[0031] In the figure:

[0032] 10. Heating component;

[0033] 1. Heating element; 11. Heating base body; 12. Infrared emission coating; 13. Conductive pin; 131. First section; 132. Second section; 133. First conductive pin; 134. Second conductive pin;

[0034] 2. Tube body; 21. First tube body; 211. Insertion cavity; 22. Second tube body; 221. First accommodation cavity; 23. Welding part;

[0035] 20. Battery assembly;

[0036] 100. Aerosol generating device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0038] The terms "first", "second", and "third" in the present application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity or order of the indicated technical features. All directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship or movement situation between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include steps or units not listed, or may optionally further include other steps or units inherent to these processes, methods, products, or devices.

[0039] Referring to "embodiments" in this context means that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0040] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element, or there may be one or more intermediate elements therebetween. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0041] The present application provides a heating component 10, including a heating body 1 and a tube body 2. The heating body 1 is disposed in the tube body 2; the heating body 1 includes a heating base 11, an infrared emission coating 12, and a conductive pin 13. The infrared emission coating 12 is disposed on the surface of the heating base 11. After the heating base 11 is powered on, it heats up and excites the infrared emission coating 12 to radiate infrared light waves. The tube body 2 allows the infrared light waves to pass through. The conductive pin 13 is connected to the heating base 11, and at least part of the conductive pin 13 is in a sheet shape.

[0042] The conductive pins 13 of the heating component 10 provided in this application are at least partially sheet-shaped, so that the bending direction of the conductive pins 13 during bending can be fixed, thereby the conductive pins 13 can be fixed at a preset position, reducing the assembly tolerance of the heating component 13.

[0043] It should be noted that different materials have different transmittances for infrared light of different wavelengths. Optionally, the tube body 2 can be made of at least one single crystal or polycrystalline light-transmitting material among diamond, spinel, quartz glass, zinc selenide, gallium arsenide, gallium phosphide, zinc selenide, zinc sulfide, and magnesium fluoride. Among them, the crystal with a diamond structure has the advantages of high transmittance and a relatively wide transmission band. The infrared optical material of the tube body 2 can be a single crystal. For example, the material of the tube body 2 is quartz glass, and the tube body 2 made of quartz glass can have a heat-resistant temperature of up to more than 1000 °C, and the infrared transmittance can reach more than 90%.

[0044] According to the wavelength of infrared light, the infrared spectrum is usually divided into three regions: the near-infrared region (0.75 μm - 2.5 μm), the mid-infrared region (2.5 μm - 25 μm), and the far-infrared region (25 μm - 1000 μm). The infrared optical material of the heating component 10 has a transmittance of ≥90% for infrared rays in the mid-infrared region within the range of 2.5 μm - 25 μm, and the main infrared light absorption band of the aerosol generating article is 3 μm - 14 μm. Therefore, the heating component 10 can be used to heat the aerosol generating article with infrared light.

[0045] In an embodiment of this application, the thickness of the conductive pin can be 0.05 mm - 0.25 mm. For example, the thickness of the conductive pin can be 0.05 mm, 0.10 mm, 0.15 mm, 0.20 mm, or 0.25 mm. In an embodiment of this application, the width of the conductive pin can be 0.5 mm - 2.0 mm. For example, the width of the conductive pin can be 0.5 mm, 1.0 mm, 1.5 mm, or 2.0 mm. In an embodiment of this application, the length of the conductive pin 13 can be set according to the overall length of the heating component 10 and the assembly requirements of the heating component 10.

[0046] In an embodiment of this application, the conductive pin 13 is sheet-shaped at a position close to the tube body 2, so that the part of the conductive pin 13 close to the tube body 2 is convenient for bending.

[0047] In an embodiment of this application, the tube body 2 includes a first tube body 21 and a second tube body 22. The second tube body 22 is sleeved outside the first tube body 21. The first tube body 21 and the second tube body 22 jointly define a first accommodation cavity 221. The heating element 1 is located in the first accommodation cavity 221. An insertion cavity 211 for the aerosol generating article to pass through is defined in the first tube body 21.

[0048] In one embodiment of the present application, the conductive pin 13 includes a first section 131 and a second section 132 that are connected to each other. The first section 132 is connected to the heating substrate 11. One end of the second section 132 is located inside the first accommodation cavity 221, and the other end of the second section 132 is located outside the first accommodation cavity 221. The second section 132 is in a sheet shape. For example, as Figure 3 shown, one end of the sheet-shaped second section 132 of the conductive pin 13 is located inside the first accommodation cavity 221, and the other end is located outside the first accommodation cavity 221, so that the conductive pin 13 is in a sheet shape at the end of the tube body 2, which facilitates the conductive pin 13 to be bent in a predetermined direction during the bending process.

[0049] In one embodiment of the present application, the heating substrate 11 may include nickel-chromium alloy, iron-chromium alloy, stainless steel, or tungsten. In one embodiment of the present application, the heating substrate 11 has a TCR effect. The TCR effect refers to the resistance temperature coefficient effect, which refers to the degree to which the resistance value of a thin film resistor changes with temperature. The heating substrate 11 has TCR characteristics, so that the temperature of the heating substrate 11 can be reflected according to the resistance of the heating substrate 11, and the temperature measuring element can be omitted.

[0050] In one embodiment of the present application, the first section 131 may be made of nickel. The first section 131 made of nickel has better welding performance with the heating substrate 11 made of nickel-chromium alloy, iron-chromium alloy, stainless steel, or tungsten material. In one embodiment of the present application, electrical connection between the heating substrate 11 and the conductive pin 13 can be achieved by means of welding, riveting, or bonding with a conductive adhesive, etc. In one embodiment of the present application, the first section 131 of the conductive pin 13 may be in a sheet shape, and the first section 131 in a sheet shape is welded to the heating substrate 11. The sheet-shaped first section 131 and the heating substrate 11 have a better contact area, which is convenient for reducing the contact resistance between the conductive pin 13 and the heating substrate 11. In other embodiments of the present application, the first section 131 may also be in other shapes such as a cylindrical shape.

[0051] In one embodiment of the present application, the second section 132 may be a molybdenum sheet, a nickel-steel alloy sheet, or a nickel-iron-cobalt alloy sheet.

[0052] In one embodiment of the present application, the conductive pin 13 includes a molybdenum sheet, and the surface of the molybdenum sheet is plated with a nickel layer. The nickel layer is located inside the first accommodation cavity and is connected to the heating substrate, so that the molybdenum sheet is welded to the heating substrate 11 through the nickel layer, and the welding performance between the conductive pin 13 and the heating substrate 11 is good.

[0053] In an embodiment of the present application, both ends of the first tube body 21 and the second tube body 22 can be connected by high-temperature melting. After the first tube body 21 and the second tube body 22 are connected by high-temperature melting, a welded portion 23 is formed at the ends of the first tube body 21 and the second tube body 22. The surface of the welded portion 23 formed by high-temperature melting has a high smoothness and no burr structure. After the first tube body 21 and the second tube body 22 are connected by high-temperature melting, a sealed first accommodation cavity 221 is formed. In an embodiment of the present application, an inert gas is filled in the first accommodation cavity 221, and different filled inert gases can excite infrared light waves with different wavelengths.

[0054] In an embodiment of the present application, a negative pressure exists in the first accommodation cavity 221. In an embodiment of the present application, the vacuum degree in the first accommodation cavity 221 is lower than 10 -2 Pa.

[0055] In an embodiment of the present application, the inner diameter of the first tube body 21 is slightly larger than the diameter of the aerosol generating article, so that the aerosol generating article can be inserted into the insertion cavity 211 defined by the first tube body 21. In an embodiment of the present application, the heating element 1 and the first tube body 21 are in interference fit.

[0056] In an embodiment of the present application, the thickness of the first tube body 21 or the second tube body 22 can be 0.1 mm - 0.5 mm. In this way, the first tube body 21 and the second tube body 22 are more easily connected together by high-temperature melting. In an embodiment of the present application, both the first tube body 21 and the second tube body 22 are made of quartz glass, and the melting point of quartz glass is 1750 °C, so that the heating element 1 can be heated to a relatively high temperature without the tube body 1 being deformed.

[0057] An embodiment of the present application provides a method for preparing a heating assembly, including: melting one end of the first tube body 21 and the second tube body 22 together by a high-temperature spray gun; placing the heating element 1 into the first accommodation cavity 221 formed by the first tube body 21 and the second tube body 22; melting the other ends of the first tube body 21 and the second tube body 22 at high temperature.

[0058] In an embodiment of the present application, during the process of melting the other ends of the first tube body 21 and the second tube body 22 at high temperature, it further includes leaving a small glass tube at the welded portion 23 of the first tube body 21 and the second tube body 22 during the high-temperature melting process. In an embodiment of the present application, the small glass tube is connected to a vacuum pumping instrument, and the first accommodation cavity 221 is evacuated so that the vacuum degree in the first accommodation cavity 221 is less than 10 -2Pa. In an embodiment of the present application, after evacuating the first accommodating cavity 221, an inert gas can also be filled into the first accommodating cavity 221. In an embodiment of the present application, after evacuating the first accommodating cavity 221 or filling an inert gas into the first accommodating cavity 221, the small glass tube remaining at the welding portion 23 of the first tube body 21 and the second tube body is sealed by high-temperature melting.

[0059] In an embodiment of the present application, the temperature of the spray gun during the high-temperature melting process is greater than 2000 °C. In an embodiment of the present application, during the high-temperature welding process, a jig for preventing the first tube body 21 from shrinking is provided inside the first tube body 21. The inner diameter of the jig is substantially the same as the inner diameter of the first tube body 21, and the material of the jig is generally graphite.

[0060] In an embodiment of the present application, the second section 132 can be a molybdenum sheet. The thermal expansion coefficient of the molybdenum sheet is substantially the same as that of the quartz glass, which is convenient for sealing the connection between the heating element 1 and the tube body 2. In the related art, if the thermal expansion coefficients of the materials at the connection between the heating element and the tube body are quite different, during the heating process of the heating component, the thermal expansion coefficients of the heating element and the tube body are inconsistent. Due to thermal expansion, it is difficult to ensure the sealing performance of the first accommodating cavity, resulting in air entering the first accommodating cavity, difficulty in maintaining the vacuum state, disappearance of the negative pressure in the first accommodating cavity, increased risk of leakage of inert gas, oxidation of the heating substrate, and the heating substrate no longer generating heat. Therefore, by selecting a molybdenum sheet and quartz glass with substantially the same thermal expansion coefficient, the molybdenum sheet and the quartz glass can have substantially the same amount of deformation at the connection, which is convenient for sealing the connection between the molybdenum sheet and the quartz glass, and can effectively prevent gaps from appearing at the connection between the heating element 1 and the tube body 2, so that the first accommodating cavity maintains a vacuum state.

[0061] In an embodiment of the present application, there is a gap between the heating element 1 and the second tube body 22, which can provide a good heat insulation effect between the heating element 1 and the second tube body 22, reducing the possibility of the second tube body 22 conducting heat to other non-heating areas. In an embodiment of the present application, the distance between the heating element 1 and the second tube body 22 is 0.05 mm - 1 mm. In an embodiment of the present application, the distance between the heating element 1 and the second tube body 22 can be 0.05 mm, 0.1 mm, 0.2 mm, 0.5 mm, 0.8 mm, or 1 mm.

[0062] In one embodiment of the present application, a reflective layer 222 may be provided on the surface of the second tube body 22. The reflective layer 222 may include an aluminum layer or a chromium layer. The reflective layer 22 can reflect the heat generated by the heating element 1 towards the inside of the second tube body 22, thereby preventing the heat of the heating element 1 from dissipating. In addition, the heat conducted by the second tube body 22 to the user is reduced, and the temperature of the surface of the aerosol generating device 100 is lowered. In one embodiment of the present application, when the second tube body 22 is made of quartz glass, the reflective layer 222 is provided on the inner surface or the outer surface of the second tube body 22. Since quartz glass has the property of transmitting infrared light waves, providing the reflective layer 222 on the inner surface or the outer surface of the second tube body 22 can achieve the effect of reflecting infrared light waves.

[0063] In some embodiments, the thickness of the reflective layer 222 may be 100μm - 400μm. For example, the thickness of the reflective layer 222 may be 100μm, 120μm, 150μm, 170μm, 190μm, 200μm, 220μm, 280μm, 300μm or 400μm, etc. Of course, it may also be other values within the above range, which are not limited herein.

[0064] It can be understood that by providing the reflective layer 222, most of the energy generated by the heating assembly 10 is concentrated at the aerosol generating article in the form of infrared light. Therefore, the energy utilization rate of the heating assembly 10 is high, and at the same time, this structure can play an effective heat insulation role to prevent other components located outside the heating assembly 10 from overheating.

[0065] In one embodiment of the present application, the heating substrate 11 is an etched annular metal mesh. Compared with being formed by winding a sheet metal mesh, the shape of the etched annular metal mesh is determined, and it is easier to be installed into the first accommodation cavity 221 formed by the first tube body 21 and the second tube body 22.

[0066] In one embodiment of the present application, the conductive pins 13 include a first conductive pin 133 and a second conductive pin 134. The first conductive pin 133 and the second conductive pin 134 are evenly distributed in the circumferential direction of the heating substrate 11, so that the area of the metal mesh between the first conductive pin 133 and the second conductive pin 134 is substantially the same. Furthermore, the resistance between the respective parts of the metal mesh separated by the first conductive pin 133 and the second conductive pin 134 is substantially the same, so that the heating substrate 11 can heat evenly.

[0067] In one embodiment of the present application, the conductive pin 133 is located on the inner surface or the outer surface of the heating substrate 11, so that the contact area between the conductive pin 13 and the heating substrate 11 is larger and the contact resistance is smaller. In one embodiment of the present application, the conductive pin 13 is located on the inner surface of the heating substrate 11, so that during the preparation process of the heating component 10, it is easy to control the distance between the heating element 1 and the second tube body 22.

[0068] The conductive pin 13 of the heating component 10 provided by the present application is at least partially sheet-shaped, which can fix the bending direction of the conductive pin 13 when it is bent and reduce the assembly tolerance of the heating component 10.

[0069] The present application provides an aerosol generating device 100, which includes a battery assembly 20 and the above-mentioned heating component 10, and the battery assembly 20 provides electric energy for the heating component 10.

[0070] One embodiment of the present application proposes to heat rather than burn an aerosol generating article such as a cigarette, so that at least one component of the aerosol generating article volatilizes or is released to form an aerosol for inhalation.

[0071] In an alternative embodiment, the aerosol generating article preferably uses a tobacco-containing material that releases volatile compounds from the matrix when heated; or it can also be a non-tobacco material suitable for electric heating to generate smoke. The aerosol generating article preferably uses a solid matrix, which can include one or more of powder, granule, fragment, strip, ribbon or sheet of vanilla leaf, tobacco leaf, homogenized tobacco, expanded tobacco, etc.; alternatively, the solid matrix can contain additional tobacco or non-tobacco volatile flavor compounds to be released when the matrix is heated.

[0072] When the aerosol generating article is received in the aerosol generating device 100, part of it, such as the filter tip, is exposed outside the aerosol generating device 100, which is beneficial for the user to inhale.

[0073] The overall shape of the aerosol generating device 100 according to one embodiment of the present application is generally constructed in a longitudinally elongated shape. The aerosol generating device 100 includes:

[0074] A housing that basically defines the outer surface of the aerosol generating device 100 and has a proximal end and a distal end that are opposite to each other in the length direction; in use, the proximal end is the end close to the user for easily operating to receive the aerosol generating article and inhaling; the distal end is the end far from the user.

[0075] In some examples, the housing can be formed of a metal or alloy such as stainless steel, aluminum, etc. Other suitable materials include various plastics (e.g., polycarbonate), metal-plating over plastic, ceramics, etc.

[0076] The aerosol generating device 100 further includes a circuit and a charging interface. In some embodiments of the present application, the battery assembly 20, the circuit and the charging interface are integrally formed, and the aerosol generating device 100 is a common integrated device.

[0077] The circuit can control the overall operation of the aerosol generating device 100. Specifically, the circuit not only controls the operations of the battery assembly 20 and the heating assembly 10, but also controls the operations of other components in the aerosol generating device 100. In addition, the circuit can determine whether the aerosol generating device 100 can operate by checking the status of the components of the aerosol generating device 100.

[0078] For example, by accommodating the above-mentioned heating element 1 in the vacuum cavity of the infrared transmissive member, the heating element 1 can be quickly heated up after being electrically heated, and is not easily oxidized during long-term use. The infrared light generated by the heating element 1 can pass through the infrared transmissive member to perform non-contact heating on the aerosol generating article, which can avoid generating odors of metals and ceramics and heavy metal migration; and by providing a reflective layer on the outer surface of the infrared transmissive member, the utilization rate of the calorific value can be improved, and it can also play a heat insulation role to prevent the outer shell of the aerosol generating device from overheating.

[0079] The circuit includes at least one control unit. The control unit may include, but is not limited to, a combination of a microcontroller and a memory for storing executable programs in the microcontroller, and the memory may be integrated in the microcontroller or independent of the microcontroller.

[0080] The battery assembly 20 provides the power for operating the aerosol generating device 100. For example, the battery assembly 20 can provide power to heat the heating assembly 10, and can provide the power required to operate the circuit. In addition, the battery assembly 20 can provide the power required to operate sensors, motors, etc. provided in the aerosol generating device 100.

[0081] The battery assembly 20 may be, but is not limited to, a lithium iron phosphate (LiFePO4) battery cell. For example, the battery assembly 20 may be a lithium cobalt oxide (LiCoO2) battery cell or a lithium titanate battery cell. The battery assembly 20 may be a rechargeable battery cell.

[0082] The charging interface outputs a certain charging voltage to the battery assembly 20 to charge the battery assembly 20 when the charging interface is electrically connected to an external power supply device, for example, when an external power adapter is inserted into the charging interface. When the charging is completed, the electrical connection between the charging interface and the external power supply device can be disconnected, that is, the external power adapter is pulled out from the charging interface.

[0083] It should be noted that the description and drawings of the present application provide preferred embodiments of the present application, but are not limited to the embodiments described in this specification. Further, for those of ordinary skill in the art, improvements or modifications can be made based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims of the present application.

Claims

1. A heating component, characterized in that, It includes a heating element and a tube body, and the heating element is disposed in the tube body; The heating element includes a heating substrate, an infrared emission coating, and conductive pins. The infrared emission coating is disposed on the surface of the heating substrate. After the heating substrate is powered on, it is heated and excites the infrared emission coating to radiate infrared light waves. The tube body allows the infrared light waves to pass through. The conductive pins are connected to the heating substrate, and at least part of the conductive pins is in a sheet shape.

2. The heating component according to claim 1, characterized in that, The thickness of the conductive pin is 0.05 mm - 0.25 mm; and / or the width of the conductive pin is 0.5 mm - 2.0 mm.

3. The aerosol generating device according to claim 1, characterized in that, The tube body includes a first tube body and a second tube body. The second tube body is sleeved outside the first tube body. The first tube body and the second tube body jointly define a first accommodation cavity. The heating element is located in the first accommodation cavity. An insertion cavity for an aerosol generating article to pass through is defined in the first tube body.

4. The heating component according to claim 3, characterized in that The conductive pin includes a first section and a second section connected to each other. The first section is connected to the heating substrate. One end of the second section is located inside the first accommodation cavity, and the other end of the second section is located outside the first accommodation cavity. The second section is in a sheet shape.

5. The heating component according to claim 4, characterized in that The first section is a nickel product; and / or the second section is a molybdenum sheet, a nickel-steel alloy sheet, or a Fe-Ni-Co alloy sheet.

6. The heating component according to claim 3, characterized in that The conductive pin includes a molybdenum sheet, and a nickel layer is plated on the surface of the molybdenum sheet. The nickel layer is located inside the first accommodation cavity and is connected to the heating substrate.

7. The heating component according to claim 3, characterized in that Both ends of the first tube body and the second tube body are connected by high-temperature melting.

8. The heating component according to claim 3, wherein The first accommodation cavity is filled with an inert gas; and / or, the first accommodating cavity is in a negative pressure state; and / or the vacuum degree in the first accommodating cavity is lower than 10 -2 Pa.

9. The heating component according to claim 3, wherein There is a gap between the heating element and the second tube body; and / or the distance between the heating element and the second tube body is 0.05 mm - 1 mm.

10. The heating component according to claim 3, wherein A reflective layer is provided on the surface of the second tube body, and the reflective layer includes an aluminum layer or a chromium layer.

11. The heating component according to claim 3, characterized in that, The heating element and the first tube body are in interference fit; and / or the thickness of the first tube body or the second tube body is 0.1 mm - 0.5 mm.

12. The heating component according to claim 1, wherein The tube body is made of at least one single crystal or polycrystalline light-transmitting material among diamond, spinel, fused quartz, zinc selenide, gallium arsenide, gallium phosphide, zinc selenide, zinc sulfide, and magnesium fluoride; and / or the heating substrate includes nickel-chromium alloy, iron-chromium alloy, stainless steel, or tungsten.

13. The heating component according to claim 1, characterized in that, The heating substrate is an etched annular metal mesh.

14. The heating component according to claim 13, characterized in that, The conductive pin includes a first conductive pin and a second conductive pin, and the first conductive pin and the second conductive pin are evenly distributed in the circumferential direction of the heating substrate.

15. The heating component according to claim 1, characterized in that, The conductive pin is located on the inner surface or the outer surface of the heating substrate.

16. An aerosol generating device, characterized in that, It includes a battery assembly and the heating assembly according to any one of claims 1 - 15, and the battery assembly supplies electrical energy to the heating assembly.

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