Heating assembly and aerosol generating device
By setting a first conductive sheet on the conductive electrode and combining it with the electrode lead by sintering, the problem of electrode lead detachment is solved, and the stability and reliability of the electrode connection are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2026-03-06
AI Technical Summary
In the existing technology, the electrode leads are not firmly soldered directly onto the printed electrodes, and are prone to loosening or falling off during assembly.
A first conductive sheet is placed on a conductive electrode, and electrode leads are welded to the first conductive sheet by sintering to form a stable bond.
This prevents the electrode leads from loosening or falling off during assembly, thus improving the stability and reliability of the electrode connection.
Smart Images
Figure CN223968663U_ABST
Abstract
Description
[Technical Field]
[0001] This application relates to the field of aerosol technology, and more particularly to a heating component and aerosol generating device for heating aerosol products to generate aerosols. [Background Technology]
[0002] Traditional tobacco products (e.g., cigarettes, cigars, etc.) produce tobacco smoke by burning tobacco during use. Existing technologies offer alternatives to these traditional tobacco products by releasing compounds through heating without combustion. Examples of such products include aerosol generating devices, which typically include a housing chamber and a heating element. The housing chamber houses the aerosol-generating product (e.g., a cigarette) used in conjunction with the aerosol generating device, while the heating element heats the aerosol-generating product, causing at least a portion of its active substances to volatilize and generate an aerosol. The user inhales this aerosol by puffing into the aerosol-generating product.
[0003] The heating components of such devices typically employ circumferential heating tubes to heat the aerosol-generated articles. The circumferential heating tubes are hollow to form the aforementioned containment chambers. Heating elements are attached to the outer wall of the heating tubes, thereby transferring heat circumferentially to the aerosol-generated articles within the containment chambers.
[0004] The aforementioned heating tubes typically have electrodes electrically connected to the heating element printed on their outer walls using thick film printing. Electrode leads are then soldered onto the electrodes. These leads are used to guide the current supplied by an external voltage source to the heating assembly. However, since the electrodes are printed electrodes, the electrode leads are not securely soldered onto them, which can easily lead to the electrode leads loosening or even falling off during the assembly of the aerosol generating device. [Utility Model Content]
[0005] This application provides a heating component and an aerosol generating device to solve the technical problem in the prior art that the electrode leads directly soldered onto the printed electrode are not secure enough and are prone to loosening or falling off during assembly.
[0006] At least one embodiment of this application provides a heating assembly for use in an aerosol generating apparatus to heat an aerosol generating article to generate an aerosol, including:
[0007] The matrix defines a chamber for housing at least a portion of the aerosol-generating article;
[0008] A heating element, incorporated in the substrate, is used to heat the aerosol-generating article to produce an aerosol;
[0009] Conductive electrodes are printed on the substrate to be electrically connected to the heating element;
[0010] Electrode leads are electrically connected to the conductive electrodes, and the electrode leads are used to electrically connect to an external voltage source;
[0011] The conductive electrode is provided with a first conductive sheet, the electrode lead is soldered to the first conductive sheet, and the first conductive sheet is bonded to the conductive electrode by sintering.
[0012] In one embodiment, the first conductive sheet has a thickness of 0.01 mm to 1 mm.
[0013] In one embodiment, the first conductive sheet has a diameter of 0.1 mm. 2 ~100mm 2 Surface area.
[0014] In one embodiment, the heating assembly further includes an empty electrode covering the outer surface of the substrate, wherein a temperature sensing element is disposed on the empty electrode for monitoring the temperature of the heating element.
[0015] In one embodiment, the heating assembly further includes a second conductive sheet bonded to the empty electrode by sintering, and the temperature sensing element includes a thermocouple welded to the second conductive sheet.
[0016] In one embodiment, the first conductive sheet is sintered onto the conductive electrode using conductive silver paste.
[0017] In one embodiment, the first conductive sheet is a metallic silver sheet or a silver-plated copper sheet.
[0018] In one embodiment, a conductive silver paste layer is formed between the first conductive sheet and the conductive electrode, the conductive silver paste layer having a thickness of 20 μm to 200 μm.
[0019] In one embodiment, the heating element includes a first heating element and a second heating element spaced apart along the length of the substrate, a first conductive electrode electrically connected to the first heating element and a second conductive electrode electrically connected to the second heating element, wherein the first conductive electrode and the second conductive electrode are each provided with a first conductive sheet, and the two first conductive sheets are staggered along the length of the substrate.
[0020] At least one embodiment of this application also provides an aerosol generating apparatus, including the heating component described in the above embodiments, and a power supply unit for providing electrical energy to the heating component.
[0021] The heating assembly provided in the above embodiments, by sintering the first conductive sheet onto the printed electrode and then bonding the electrode leads to the first conductive sheet by welding or other methods, can firmly bond the electrode leads to the printed electrode, avoiding the electrode leads from becoming loose or falling off during the assembly process. [Attached Image Description]
[0022] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.
[0023] Figure 1 This is a schematic diagram of the structure of an aerosol generating apparatus provided in an embodiment of this application;
[0024] Figure 2 for Figure 1 A three-dimensional schematic diagram of the heating components of the aerosol generation device in one direction;
[0025] Figure 3 for Figure 2 A three-dimensional schematic diagram of the heating element from another direction;
[0026] Figure 4 for Figure 2 A three-dimensional schematic diagram of the heating element after the electrode leads are hidden.
Detailed Implementation Methods
[0027] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" or "attached to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only.
[0028] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.
[0029] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.
[0030] In the embodiments of this application, "installation" includes fixing or restricting a component or device to a specific position or place by means of welding, screwing, snapping, bonding, etc. The component or device may remain stationary in the specific position or place or may move within a limited range. After the component or device is fixed or restricted to the specific position or place, it may or may not be disassembled. This application does not impose any restrictions.
[0031] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0032] One embodiment of this application provides an aerosol generating device 100, such as... Figure 1 As shown, the aerosol generating device 100 includes a power supply unit 10, a main board 20, and a heating component 30. The main board 20 is equipped with a controller for the aerosol generating device 100. The power supply unit 10 and the heating component 30 are electrically connected to the controller, allowing the controller to control the power supply unit 10 to provide electrical energy to the heating component 30. The heating component 30 forms a chamber 31, which is used to contain the aerosol generating product 200 used in conjunction with the aerosol generating device 100. When the aerosol generating product 200 is contained in the chamber 31, the heating component 30 heats the aerosol generating product 200, causing some of the active substances filling the aerosol generating product 200 to volatilize and generate aerosol. Users can inhale the aerosol by sucking it from the aerosol generating product 200. The power supply unit 10 can be a rechargeable or non-rechargeable battery.
[0033] The aerosol-generating article 200 preferably uses a tobacco-containing material from which volatile compounds are released upon heating; or it may be a non-tobacco material suitable for electric heating and smoke generation after heating. The aerosol-generating article 200 preferably uses a solid matrix, which may include one or more of the following: vanilla leaves, tobacco leaves, homogenized tobacco, expanded tobacco, powder, granules, fragments, strips, or sheets; or the solid matrix may contain additional tobacco or non-tobacco volatile aroma compounds to be released when the matrix is heated.
[0034] like Figure 1As shown, the aerosol generating device 100 also includes an air inlet 40 for external air to enter, and an airflow channel 50 in fluid communication with the air inlet 40. The airflow channel 50 is connected to the chamber 31. When a user inhales onto the aerosol generating product 200, external air enters the aerosol generating device 100 through the air inlet 40, then enters the chamber 31 along the airflow channel 50, and finally enters the aerosol generating product 200, carrying the aerosol generated in the aerosol generating product 200 out for the user to inhale.
[0035] like Figure 2 As shown, the heating assembly 30 includes a base 32 and a heating element 33 attached to the base 32. The base 32 has a first end 321 and a second end 322 disposed opposite to each other along its length. The base 32 is hollow to define a chamber 31. The chamber 31 extends from the first end 321 to the second end 322. The first end 321 is open to provide an inlet for the aerosol generating article 200 to enter the chamber 31. The second end 322 may also be open to allow air to enter the chamber 31. Thus, when a user uses the aerosol generating article 200 for inhalation, external air enters the chamber 31 through the opening of the second end 322, and then further enters the aerosol generating article 200, carrying away the aerosol generated by the volatilization of the aerosol generating article 200 for the user to inhale.
[0036] Please continue reading. Figure 2 The heating element 33 can be attached to the outer surface of the substrate 32 by any of the following methods: thick film printing, surface spraying, electroplating, PVD or CVD coating, laser engraving, etc. For example, the heating element 33 can be a thick film resistive heating material, which can be printed onto the outer surface of the substrate 32 by thick film printing. The substrate 32 then transfers the heat from the heating element 33 to the chamber 31 to heat the aerosol and generate the product 200. In this case, the substrate 32 is made of a high thermal conductivity material to efficiently conduct the heat generated by the heating element 33 into the chamber 31. The high thermal conductivity material can be a metal or a ceramic material, and the ceramic material can be any of oxides, nitrides, carbides, borides, etc.
[0037] Alternatively, the heating element 33 can be an infrared electrothermal coating, which can be applied to the outer surface of the substrate 32 by spraying. When the infrared electrothermal coating is energized and heated, it generates infrared radiation, which then passes through the substrate 32 and is transmitted into the chamber 31. The aerosol-generating product 200 within the chamber 31 absorbs this infrared radiation and generates heat. To improve heating efficiency, the substrate 32 is preferably made of ceramic or quartz glass to ensure efficient infrared radiation into the chamber 31.
[0038] Alternatively, the heating element can be embedded in the substrate 32. For example, the heating component 30 is a ceramic heating tube. A ceramic heating tube is a type of heating element, mainly composed of a ceramic substrate 32 and a heating element. The substrate 32 is made of ceramic materials with high temperature resistance and good insulation properties, such as alumina ceramics. The heating element is made of metal heating wire (such as nickel-chromium alloy wire). The heating element is embedded inside the ceramic substrate 32, thereby forming a ceramic heating tube.
[0039] Please continue reading. Figure 2 The heating assembly 30 also includes a conductive electrode 34, which is made by printing a conductive active material onto a substrate 32 using thick film technology. The conductive electrode 34 is electrically connected to the heating element 33. The heating assembly 30 also includes an electrode lead 35 for electrically connecting to the conductive electrode 34. The electrode lead 35 is used to electrically connect to a voltage source to conduct electrical energy to the heating element 33. The heating element 33 can then heat the aerosol generating product 200 by working. It is easy to understand that the voltage source can be the output voltage of the power supply unit 10 or the voltage at a certain node.
[0040] Please continue reading. Figure 2 The heating assembly 30 also includes a first conductive sheet 36 disposed on the conductive electrode 34, and an electrode lead 35 can be welded to the first conductive sheet 36. The first conductive sheet 36 is bonded to the conductive electrode 34 by sintering, thereby forming a stable bond between the first conductive sheet 36 and the conductive electrode 34. Since the electrode 34 is fabricated using a thick-film printing method, if the electrode lead 35 is directly welded to the conductive electrode 34, the bond between the electrode lead 35 and the conductive electrode 34 will not be strong enough, and the electrode lead 35 may easily loosen or even fall off during assembly. However, in this embodiment, the electrode lead 35 is welded to the first conductive sheet 36. Since the first conductive sheet 36 is bonded to the conductive electrode 34 by sintering, it has a stable bond. Therefore, during the assembly of the aerosol generating device 100, the electrode lead 35 can be prevented from loosening or falling off.
[0041] Specifically, after the substrate 32 is prepared, a conductive paste is applied to the conductive electrode 34, and then the first conductive sheet 36 is attached to the part of the conductive electrode 34 where the conductive paste is applied. After the first conductive sheet 36 is attached, it is dried appropriately at room temperature or in an oven, and finally sintered using methods such as high temperature or light irradiation. This process can also use a robotic arm for automated patch application, which is beneficial for large-scale mass production, further improving production efficiency and reducing production costs.
[0042] During sintering, the smaller the mass and the larger the surface area of the first conductive sheet 36, the stronger the adhesion of the conductive paste to the first conductive sheet 36 when it is bonded to the conductive paste. This results in a more robust bond between the first conductive sheet 36 and the conductive electrode 34 after sintering. Therefore, in some embodiments, the first conductive sheet 36 has a thickness of 0.01 mm to 1 mm, or a thickness of 0.1 mm. 2 ~100mm 2 Surface area.
[0043] In some embodiments, to improve the reliability of the electrical contact between the first conductive sheet 36 and the conductive electrode 34 after sintering, conductive silver paste is used as the conductive paste. Conductive silver paste has good conductivity, so it can maintain good electrical contact between the first conductive sheet 36 and the conductive electrode 34 after sintering.
[0044] Furthermore, in some embodiments, to further improve the bonding force between the first conductive sheet 36 and the conductive electrode 34 after sintering, the first conductive sheet 36 is made of metallic silver or silver-plated copper, so that the first conductive sheet 36 and the conductive silver paste contain the same material, metallic silver. The same material can improve the bonding force between the first conductive sheet 36 and the conductive electrode 34 after sintering.
[0045] It is easy to understand that after sintering, a conductive silver paste layer will form between the first conductive sheet 36 and the conductive electrode 34. The thickness of the conductive silver paste layer will affect the bonding force between the first conductive sheet 36 and the conductive electrode 34 after sintering. The thinner the conductive silver paste layer, the weaker the bonding force between the first conductive sheet 36 and the conductive electrode 34 after sintering; conversely, the thicker the conductive silver paste layer, the stronger the bonding force between the first conductive sheet 36 and the conductive electrode 34 after sintering. However, if the conductive silver paste layer is too thick, it will reduce the current transmission efficiency. Therefore, the conductive silver paste layer needs to have a suitable thickness. In some embodiments, the conductive silver paste layer has a thickness of 20μm to 200μm. Within this thickness range, on the one hand, it can ensure a good bonding force between the first conductive sheet 36 and the conductive electrode 34 after sintering, and on the other hand, it can avoid reducing the current transmission efficiency.
[0046] In some embodiments, such as Figure 3 As shown, a blank electrode 37 is also printed on the base 32. The blank electrode 37 is not electrically connected to the heating element 33. Some sensing elements can be set on the blank electrode 37 to monitor some physical quantities in the heating assembly. In this embodiment, a temperature sensing element 38 is set on the blank electrode 37. The temperature sensing element 38 is used to monitor the temperature of the heating element 33.
[0047] In some embodiments, the temperature sensing element 38 is a thermocouple, and the heating assembly 30 also includes a second conductive sheet 39 disposed on the empty electrode 37. The second conductive sheet 39 is also bonded to the empty electrode 37 by sintering, and the thermocouple is welded to the second conductive sheet 39, thereby avoiding the thermocouple from becoming loose or falling off the heating assembly 30 during the assembly of the aerosol generating device 100.
[0048] In some embodiments, such as Figure 4 As shown, the heating element 33 includes a first heating element 331 and a second heating element 332 that are spaced apart and independent of each other along the length of the substrate 32. The corresponding electrode 34 includes a first conductive electrode 341 and a second conductive electrode 342 that are spaced apart along the length of the substrate 32. The first conductive electrode 341 is electrically connected to the first heating element 331, while the second heating element 342 is electrically connected to the second heating element 332. The substrate 32 also includes a common electrode (not shown) shared by the first heating element 331 and the second heating element 332. When the first conductive electrode 341 and the common electrode form a circuit, the first heating element 331 is energized; and when the second conductive electrode 342 and the common electrode form a circuit, the second heating element 332 is energized. In this way, the heating element 33 can perform segmented heating of the aerosol-generating product 200, thereby flexibly controlling the heating area of the heating element 33.
[0049] Both the first heating element 331 and the second heating element 332 are provided with first conductive sheets 36, and the two first conductive sheets 36 are staggered along the length direction of the substrate 32, such as... Figure 4 The staggered distance d shown in the figure is to avoid the electrode leads of the first heating element 331 and the electrode leads of the second heating element 332 overlapping each other when assembling the heating assembly 30, which would make wiring inconvenient.
[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this application as described above, which are not provided in detail for the sake of brevity; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A heating assembly for use in an aerosol-generating device to heat an aerosol-generating article to generate an aerosol, the heating assembly comprising: The heating assembly comprises: a base body defining a cavity for receiving at least a portion of the aerosol generating article; a heating element coupled to the base body for heating the aerosol generating article to generate aerosol; a conductive electrode printed on the base body to electrically connect with the heating element; an electrode lead wire electrically connected with the conductive electrode, the electrode lead wire being configured to electrically connect with an external voltage source; wherein the conductive electrode is provided with a first conductive sheet, the electrode lead wire is welded to the first conductive sheet, and the first conductive sheet is sintered to the conductive electrode.
2. The heating assembly of claim 1, wherein, The first conductive sheet has a thickness of 0.01mm to 1mm.
3. The heating assembly of claim 1, wherein, The first conductive sheet has a surface area of 0.1 mm 2 ~ 100 mm 2 .
4. The heating assembly of claim 1, wherein, The heating assembly further comprises an empty electrode covering an outer surface of the base body, the empty electrode being provided with a temperature measuring element for monitoring a temperature of the heating element.
5. The heating assembly of claim 4, wherein, The heating assembly further comprises a second conductive sheet sintered to the empty electrode, and the temperature measuring element comprises a thermocouple welded to the second conductive sheet.
6. The heating assembly of claim 1, wherein, The first conductive sheet is sintered to the conductive electrode by conductive silver paste.
7. The heating assembly of claim 6, wherein, The first conductive sheet is a silver sheet or a silver-plated copper sheet.
8. The heating assembly of claim 6, wherein, A conductive silver paste layer is formed between the first conductive sheet and the conductive electrode, and the conductive silver paste layer has a thickness of 20μm to 200μm.
9. The heating assembly of claim 1, wherein, The heating element comprises a first heating element and a second heating element arranged at intervals along a length direction of the base body, a first conductive electrode electrically connected with the first heating element, and a second conductive electrode electrically connected with the second heating element, the first conductive electrode and the second conductive electrode are both provided with the first conductive sheet, and the two first conductive sheets are staggered along the length direction of the base body.
10. An aerosol-generating device comprising: The heating assembly comprises: a base body defining a cavity for receiving at least a portion of the aerosol generating article; a heating element coupled to the base body for heating the aerosol generating article to generate aerosol; a conductive electrode printed on the base body to electrically connect with the heating element; an electrode lead wire electrically connected with the conductive electrode, the electrode lead wire being configured to electrically connect with an external voltage source; wherein the conductive electrode is provided with a first conductive sheet, the electrode lead wire is welded to the first conductive sheet, and the first conductive sheet is sintered to the conductive electrode. The first conductive sheet has a thickness of 0.01mm to 1mm. The heating assembly further comprises an empty electrode covering an outer surface of the base body, the empty electrode being provided with a temperature measuring element for monitoring a temperature of the heating element. The heating assembly further comprises a second conductive sheet sintered to the empty electrode, and the temperature measuring element comprises a thermocouple welded to the second conductive sheet. The first conductive sheet is sintered to the conductive electrode by conductive silver paste. The first conductive sheet is a silver sheet or a silver-plated copper sheet. A conductive silver paste layer is formed between the first conductive sheet and the conductive electrode, and the conductive silver paste layer has a thickness of 20μm to 200μm. The heating element comprises a first heating element and a second heating element arranged at intervals along a length direction of the base body, a first conductive electrode electrically connected with the first heating element, and a second conductive electrode electrically connected with the second heating element, the first conductive electrode and the second conductive electrode are both provided with the first conductive sheet, and the two first conductive sheets are staggered along the length direction of the base body. The heating assembly comprises: a base body defining a cavity for receiving at least a portion of the aerosol generating article; a heating element coupled to the base body for heating the aerosol generating article to generate aerosol; a conductive electrode printed on the base body to electrically connect with the heating element; an electrode lead wire electrically connected with the conductive electrode, the electrode lead wire being configured to electrically connect with an external voltage source; wherein the conductive electrode is provided with a first conductive sheet, the electrode lead wire is welded to the first conductive sheet, and the first conductive sheet is sintered to the conductive electrode. The first conductive sheet has a thickness of 0.01mm to 1mm. The heating assembly further comprises an empty electrode covering an outer surface of the base body, the empty electrode being provided with a temperature measuring element for monitoring a temperature of the heating element. The heating assembly further comprises a second conductive sheet sintered to the empty electrode, and the temperature measuring element comprises a thermocouple welded to the second conductive sheet. The first conductive sheet is sintered to the conductive electrode by conductive silver paste. The first conductive sheet is a silver sheet or a silver-plated copper sheet. A conductive silver paste layer is formed between the first conductive sheet and the conductive electrode, and the conductive silver paste layer has a thickness of 20μm to 200μm. The heating element comprises a first heating element and a second heating element arranged at intervals along a length direction of the base body, a first conductive electrode electrically connected with the first heating element, and a second conductive electrode electrically connected with the second heating element, the first conductive electrode and the second conductive electrode are both provided with the first conductive sheet, and the two first conductive sheets are staggered along the length direction of the base body.