Heating module and electronic atomization device

Abstract

The utility model discloses a heating module and an electronic atomization device, and the heating module comprises an electrode assembly which comprises an electrode cap and a columnar electrode, and the electrode cap is provided with a fixing hole matched with the electrode in an inserted manner; the heating assembly comprises a heating body and a conductive connecting piece, one end of the conductive connecting piece is electrically connected with the heating body, and at least part of the other end of the conductive connecting piece is arranged in the fixing hole in a penetrating mode and clamped between the electrode cap and the electrode. In the embodiment of the invention, the conductive connecting piece is clamped between the inner wall of the electrode cap and the outer wall of the electrode column, and the electrode cap provides pressure for pressing the conductive connecting piece on the electrode, so that the contact stability of the electrode and the conductive connecting piece is ensured; each conductive connecting piece can be matched with an electrode through an independent electrode cap, so that the assembly flexibility can be improved; in addition, the contact resistance between the conductive connecting piece and the electrode can be reduced through the pressure of clamping the conductive connecting piece on the electrode by arranging the electrode cap.

Description

Technical Field

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

[0002] In the e-cigarette industry, the heating element is the core component of the e-cigarette. The heating element generates Joule heat through electric current to heat the e-liquid to produce aerosol. The heating element is usually made of iron-based or nickel-based metal materials such as iron-chromium-aluminum and nickel-chromium-iron. The power supply is connected by welding metal materials such as nickel electrodes at both ends of the heating element to form a conductive circuit.

[0003] At present, in order to solve the safety problem caused by the precipitation of heavy metal elements such as nickel and chromium at the welding points during the use of electronic cigarettes, welding-free heating elements are usually used, that is, the heating element and the battery electrodes are not connected by welding.

[0004] However, conventional solder-free heating elements often have large contact resistance, unstable resistance or even open circuit phenomenon, which makes the heating element work extremely unstable. Utility Model Content

[0005] In view of this, the present application provides a heating module and an electronic atomization device, which aim to effectively improve the connection stability between the heating element and the electrode in the welding-free heating element, while effectively reducing the contact resistance between the heating element and the electrode.

[0006] The heating module of the embodiment of the present application includes:

[0007] An electrode assembly, comprising an electrode cap and a columnar electrode, wherein the electrode cap is provided with a fixing hole for plugging and matching with the electrode;

[0008] The heating component comprises a heating element and a conductive connector, wherein one end of the conductive connector is electrically connected to the heating element, and the other end of the conductive connector is at least partially inserted into the fixing hole and clamped between the electrode cap and the electrode.

[0009] Furthermore, the conductive connector includes a first part, which is at least partially inserted into the fixing hole and abuts against the electrode, wherein the first part is an elastic metal sheet and is arranged at an angle with the axis of the fixing hole.

[0010] Furthermore, the conductive connector also includes a second part having one end connected to the first part, and the other end of the second part is used to be electrically connected to the heating element, wherein the second part is arranged at an angle to the first part.

[0011] Furthermore, the electrode cap includes a body and a receiving portion, the fixing hole is arranged on the body, one end of the receiving portion is connected to the body, and the other end of the receiving portion is a free end and extends in a radial direction away from the fixing hole, wherein the receiving portion abuts against the second part.

[0012] Further, the cross-sectional profile of the fixing hole includes a curved segment, and the curved segment at least partially matches the profile of the electrode.

[0013] Furthermore, the electrode cap and the electrode are interference fit.

[0014] Further, the surface of the portion where the conductive connector abuts against the electrode is provided with a noble metal layer; or, the surface where the conductive connector abuts against the electrode is a rough surface, and the roughness of the rough surface is less than the roughness of the remaining surfaces of the conductive connector.

[0015] Furthermore, a noble metal layer is provided at a portion of the conductive connecting member abutting against the electrode, and the thickness of the noble metal layer is 0.5 μm to 10 μm.

[0016] Furthermore, the rough surface includes an etched area formed by etching or a laser area formed by laser, and the depth of the etched area or the laser area is 0.001-0.05 mm.

[0017] Furthermore, at least a portion of the surface of the conductive connector that abuts against the electrode is provided with a plurality of rows of grooves arranged at intervals to form an uneven rough surface.

[0018] Furthermore, the depth of the groove is 0.001-0.05 mm.

[0019] The heating module and electronic atomization device of the embodiments of the present application have at least the following beneficial effects: the conductive connector is contacted and matched with the electrode through the electrode cap, the electrode cap is detachably mounted on the electrode, the conductive connector is clamped between the inner wall of the electrode cap and the outer wall of the electrode column, and the electrode cap provides pressure to press the conductive connector on the electrode to ensure the contact stability between the electrode and the conductive connector. The conductive connector is clamped and fixed to the electrode through the electrode cap, and each conductive connector can be matched with the electrode through a separate electrode cap, so that the flexibility of assembly can be improved; in addition, the greater the pressure, the smaller the contraction resistance between the conductive connector and the electrode, so the contact resistance between the conductive connector and the electrode can be reduced by setting the pressure of the electrode cap to clamp the conductive connector on the electrode.

[0020] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present application is further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 This is a schematic diagram of the decomposed structure of a heating module in one embodiment of the present application;

[0023] Figure 2 This is a schematic diagram of the assembly structure of a heating module in one embodiment of the present application;

[0024] Figure 3 This is a schematic diagram of the structure of a heating component in an embodiment of the present application;

[0025] Figure 4 This is a schematic diagram of the structure of an electrode cap in one embodiment of the present application;

[0026] Figure 5 This is a schematic diagram of the decomposed structure of a heating module in another embodiment of the present application;

[0027] Figure 6 This is a schematic diagram of the assembly structure of a heating module in another embodiment of the present application.

[0028] Reference numerals:

[0029] 110, electrode cap; 111, fixing hole; 1111, first wall surface; 1112, second wall surface; 112, body; 113, receiving portion; 120, electrode;

[0030] 210, heating element; 220, conductive connecting member; 221, first part; 222, second part;

[0031] 300, bracket; 310, fixing cavity; 320, installation cavity;

[0032] 400, oil guide body; 500, fixing seat. DETAILED DESCRIPTION

[0033] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0034] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] In the description of this application, "several" means more than one, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0037] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0038] In one aspect, an embodiment of the present application provides an electronic atomization device, including a heating module, wherein the heating module is used to heat atomization liquid to form an aerosol that can be inhaled.

[0039] Another aspect of the present application provides a heating module, see Figures 1 to 3 The heating module includes an electrode assembly and a heating assembly, wherein the electrode assembly is electrically connected to the heating assembly, and the heating assembly is connected to a power supply assembly of the electronic atomization device through the electrode assembly.

[0040] See also Figures 1 to 3 The electrode assembly includes an electrode cap 110 and a columnar electrode 120. The electrode cap 110 is provided with a fixing hole 111 for plugging and matching with the electrode 120. During assembly, the electrode 120 is inserted into the fixing hole 111 of the electrode cap 110, and the electrode 120 is at least partially clamped between the electrode cap 110 and the electrode 120.

[0041] The fixing hole 111 may be a through hole or a blind hole, which is not limited here.

[0042] It is worth to be understood that the cross-sectional profile of the electrode 120 may be circular, elliptical, polygonal or other special shapes.

[0043] It should be pointed out that in the embodiment of the present application, the electrode 120 may specifically include a sheet-shaped electrode 120 , which is not limited here.

[0044] In some embodiments of the present application, the electrode 120 is made of metal.

[0045] For example, the electrode 120 is made of copper (brass, copper), iron (stainless steel), nickel (pure nickel), aluminum (pure aluminum) by cold heading or turning. The resistivity of the electrode 120 is less than 1*10 -6 Ω·m.

[0046] See also Figures 1 to 3 The heating component includes a heating element 210 and a conductive connector 220, one end of the conductive connector 220 is electrically connected to the heating element 210, and the other end of the conductive connector 220 is at least partially inserted into the fixing hole 111 and clamped between the electrode cap 110 and the electrode 120, so that the conductive connector 220 is electrically connected to the electrode 120.

[0047] During assembly, the electrode 120 and the conductive connector 220 are inserted into the fixing hole 111 , and the fixing hole 111 can clamp the conductive connector 220 and the electrode 120 so that the conductive connector 220 maintains good contact with the electrode 120 , which is beneficial to improving the connection stability.

[0048] It should be understood that the heating element 210 and the conductive connector 220 may be an integrally formed structure, or may be a structure formed separately and then fixedly connected, which is not limited here.

[0049] It is worth understanding that the contact resistance between conductors includes contraction resistance, membrane resistance, etc., which are mainly affected by factors such as contact material, positive pressure, surface state, operating voltage and current.

[0050] In the embodiment of the present application, the conductive connector 220 is contacted and matched with the electrode 120 through the electrode cap 110, and the electrode cap 110 is detachably mounted on the electrode 120. The conductive connector 220 is clamped between the inner wall of the electrode cap 110 and the outer wall of the electrode column. The electrode cap 110 provides pressure to press the conductive connector 220 on the electrode 120 to ensure the contact stability between the electrode 120 and the conductive connector 220. The conductive connector 220 is clamped and fixed on the electrode 120 by the electrode cap 110, and each conductive connector 220 can be matched with the electrode 120 through a separate electrode cap 110, so that the flexibility of assembly can be improved; in addition, the greater the pressure, the smaller the contraction resistance between the conductive connector 220 and the electrode 120. Therefore, the contact resistance between the conductive connector 220 and the electrode 120 can be reduced by setting the pressure of the electrode cap 110 to clamp the conductive connector 220 on the electrode 120.

[0051] In some embodiments of the present application, see Figure 3 As shown, the conductive connector 220 includes a first part 221, which is at least partially inserted into the fixing hole 111 and abuts against the electrode 120. The first part 221 is an elastic metal sheet, and the first part 221 is arranged at an angle with the axis of the fixing hole 111, that is, along the direction in which the electrode 120 is inserted into the fixing hole 111, the distance between the first part 221 and the axis of the fixing hole 111 gradually decreases. When the electrode 120 and the first part 221 are both inserted into the fixing hole 111, the free end of the first part 221 is squeezed open by the electrode 120, so that the first part 221 can fully abut and squeeze against the outer wall of the electrode 120, which is conducive to reducing the contact resistance. At the same time, when the first part 221 is at least partially inserted into the fixing hole 111, the fixing hole 111 can play a positioning and fixing role on the first part 221, so that the contact position between the first part 221 and the electrode 120 can be kept relatively stable, which is conducive to ensuring the connection stability of the conductive connector 220 and the electrode 120.

[0052] Furthermore, the profile of the fixing hole 111 near the first portion 221 matches the first portion 221. In this way, the gap between the first portion 221 and the hole wall of the fixing hole 111 can be reduced, which helps to reduce the volume of the electrode cap 110.

[0053] As one implementation method, see Figure 4 and Figure 6 As shown, the first portion 221 is in a sheet shape, and the contour of the portion where the fixing hole 111 cooperates with the first portion 221 is a plane, that is, the hole wall of the fixing hole 111 includes a flat second wall surface 1112 .

[0054] As another implementation manner, the profile of the first portion 221 may be an arc surface or other curved surface.

[0055] Furthermore, a groove matching the first part 221 may be provided at the portion where the electrode 120 abuts against the first part 221 , so as to increase the contact area between the first part 221 and the electrode 120 , while ensuring connection stability.

[0056] In some embodiments of the present application, see Figures 1 to 4 The electrode cap 110 is made of polymer material, and one side of the inner surface of the electrode cap 110 is a plane (i.e., the second wall 1112) matching the conductive connector 220, and the other side (i.e., the first wall 1111) is a cylindrical surface, and the diameter of the first wall 1111 is slightly smaller than the diameter of the electrode 120, and has an interference fit with the electrode 120. In some embodiments of the present application, see Figures 1 to 4As shown, the conductive connector 220 also includes a second part 222 connected to the first part 221 at one end, and the other end of the second part 222 is used to be electrically connected to the heating element, wherein the second part 222 is arranged at an angle to the first part 221. In this way, the structural design inside the electronic atomization device can be optimized, which is conducive to optimizing the assembly work of the conductive connector 220 and the electrode 120.

[0057] In some embodiments, the free end of the first portion 221 may extend in a direction away from the electrode 120, that is, the first portion 221 is bent upward relative to the second portion 222, and during assembly, the first portion 221 may be inserted into the fixing hole 111 from one end of the fixing hole 111 close to the electrode 120. In this embodiment, the direction in which the first portion 221 is inserted into the fixing hole 111 is consistent with the direction in which the electrode 120 is inserted into the fixing hole 111.

[0058] During assembly, the first part 221 is first inserted into the fixing hole 111, and then the electrode 120 is inserted into the fixing hole 111; or, the first part 221 and the electrode 120 are inserted into the fixing hole 111 at the same time. In this way, during the assembly process, when the electrode 120 is inserted into the fixing hole 111, the first part 221 can be pressed synchronously by means of the squeezing effect of the electrode 120 and the limiting effect of the fixing hole 111, thereby fixing the conductive connector 220; at the same time, since the extension direction of the first part is consistent with the insertion direction of the electrode 120 during assembly, it can be avoided that the first part 221 of the conductive connector 220 is pushed out of the fixing hole 111 during the insertion of the electrode 120 into the fixing hole 111.

[0059] Of course, in some other embodiments, the specific bending direction of the first portion 221 can also be set accordingly according to the structural design. For example, the free end of the first portion 221 can also be set toward the end close to the electrode 120, that is, the first portion 221 is bent downward relative to the second portion 222, so that during assembly, the first portion 221 can be inserted into the fixing hole 111 from the end of the fixing hole 111 away from the electrode 120.

[0060] In some embodiments of the present application, see Figure 2 and Figure 4 The electrode cap 110 includes a body 112 and a receiving portion 113, one end of the receiving portion 113 is connected to the body 112, and the other end of the receiving portion 113 is a free end and extends in a radial direction away from the fixing hole 111. The fixing hole 111 is provided on the body 112, and the receiving portion 113 abuts against the second portion 222.

[0061] In some embodiments of the present application, see Figure 4 As shown, the cross-sectional profile of the fixing hole 111 includes a curved segment, which at least partially matches the profile of the electrode 120 .

[0062] In some embodiments of the present application, the electrode cap 110 and the electrode 120 are interference fit, that is, when the electrode 120 is inserted into the fixing hole 111, the electrode 120 can squeeze the first part 221 of the conductive connector 220 located in the fixing hole 111, so that the electrode 120 maintains good contact with the first part 221.

[0063] In some embodiments of the present application, a noble metal layer is provided on the surface of the portion where the conductive connector 220 contacts the electrode 120. The noble metal layer is made of a noble metal material with stable chemical properties and has good electrical conductivity and stability. Thus, the use of a noble metal material with stable chemical properties as the noble metal layer can avoid the appearance of an oxide layer on the surface of the conductive connector 220; at the same time, the noble metal layer with good electrical conductivity can effectively reduce the contact resistance between the conductive connector 220 and the electrode 120, thereby reducing the contact resistance between the heating element 210 and the electrode 120.

[0064] It should be noted that the noble metal layer can be made of noble metal materials, and the noble metal materials can specifically be materials such as gold and silver that have good electrical conductivity and stability.

[0065] For example, the noble metal layer is made of gold, which has high electrical conductivity and good plastic deformation rate, and can effectively reduce the contact resistance between the heating element 210 and the electrode 120 .

[0066] In some embodiments of the present application, the surface of the conductive connector 220 abutting against the electrode 120 is a rough surface, and the roughness of the rough surface is less than the roughness of the remaining surface of the conductive connector 220. In this way, the contact resistance between the conductive connector 220 and the electrode 120 can be reduced.

[0067] In some embodiments of the present application, see Figure 3 As shown, at least a portion of the surface of the conductive connecting member 220 that abuts against the electrode 120 is provided with multiple rows of grooves arranged at intervals to form an uneven rough surface.

[0068] As one of the implementation methods, in order to reduce the contact resistance, the conductive connector 220 at the riveting position with the electrode 120 is half-etched to etch multiple rows of grooves with regular shapes, which can stabilize the connection between the conductive connector 220 and the electrode 120. Specifically, the roughness of the surface of the heating sheet can be increased by the local half-etching method without changing the thickness of the heating sheet, which can effectively increase the effective contact area during the riveting process, remove the oxide layer, and reduce the contact resistance.

[0069] In some embodiments of the present application, the depth of the groove is 0.001-0.05 mm. In practical applications, the depth of the groove can be set to 0.005 mm, 0.01 mm, 0.02 mm, 0.03 mm, 0.04 mm, etc. according to actual needs.

[0070] In some embodiments of the present application, the rough surface includes an etched area formed by etching or a laser area formed by laser. The depth of the etched area or the laser area is 0.001 mm to 0.05 mm. It is worth understanding that the specific depth of the etched area or the laser area can be specifically set as needed. Exemplarily, the depth of the etched area or the laser area can be specifically set to 0.005 μm, 0.01 μm, 0.02 μm, 0.03 μm, 0.04 μm, etc. according to actual needs.

[0071] In some embodiments of the present application, the surface of the conductive connector 220 and the electrode 120 abutting portion is provided with an etching area or a laser area. Specifically, the electrode 120 corresponds to the etching area or the laser area of ​​the conductive connector 220, and the outer diameter of the electrode 120 increases synchronously, and the increase in the outer diameter is the depth of the etching area or the laser area to ensure the interference between the electrode 120 and the conductive connector 220, so that the conductive connector 220 and the electrode 120. It is worth understanding that laser is also called laser carving.

[0072] In the above embodiment, chemical etching or laser engraving can increase the roughness of the surface of the conductive connector 220, which can effectively increase the effective contact area between the electrode 120 and the conductive connector 220 during the extrusion process and reduce the contact resistance; at the same time, chemical etching or laser engraving can destroy the original oxide layer of the conductive connector 220, increase the conductivity of the heat-generating conductive connector 220, and thus reduce the contact resistance between the conductive connector 220 and the electrode 120.

[0073] In some embodiments of the present application, a noble metal layer is provided at the portion where the conductive connector 220 contacts the electrode 120, and the thickness of the noble metal layer is 0.5 μm to 10 μm. In practical applications, the thickness of the noble metal layer can be set to 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, etc. as required.

[0074] In some embodiments of the present application, the electronic atomization device further includes a liquid storage tank, a liquid guide component and a suction nozzle. The liquid storage tank has a liquid storage cavity for storing atomized liquid. The liquid guide component is used to guide the atomized liquid in the liquid storage cavity to the heating element 210. The heating element 210 generates an aerosol by heating the atomized liquid delivered by the liquid guide component. The electronic atomization device also has an atomization channel. The atomized liquid generated by the heating element 210 heating the atomized liquid is guided to the suction nozzle through the atomization channel for the user to inhale.

[0075] In some embodiments of the present application, see Figures 5 and 6 The heating module also includes a bracket 300, which has an installation cavity 320 for installing the heating component and a fixing cavity 310 for installing the electrode cap 110, wherein the heating element 210 is arranged in the installation cavity 320, and the electrode cap 110 is at least partially installed in the fixing cavity 310. In this way, after assembly, the electrode 120 can press the conductive connector 220; at the same time, since the electrode cap 110 is installed in the fixing cavity 310, the position of the electrode cap 110 is relatively fixed after assembly, so that the relative position of the electrode cap 110 and the conductive connector 220 is relatively fixed. In this way, it is beneficial to improve the connection stability between the conductive connector 220 and the electrode 120.

[0076] In some specific embodiments, the heating module also includes an oil guide body 400 and a fixed seat 500, wherein the fixed seat 500, the heating element 210 and the oil guide body 400 are sequentially connected from the inside to the outside to form an atomization core of the electronic atomization device, and the heating element 210 and the oil guide body 400 can be inserted into the installation cavity 320 of the bracket 300 through the fixed seat 500, the fixed seat 500 is used to support the heating element 210 and the oil guide body 400, and the oil guide body 400 is used to guide the atomized liquid in the liquid storage tank of the electronic atomization device to the heating element 210, wherein an atomization airway connected to the nozzle is also formed in the fixed seat 500, and the heating element 210 heats the atomized liquid on the oil guide body 400 to atomize to form an aerosol that enters the atomization airway and flows to the nozzle with the suction airflow to be inhaled by the user.

[0077] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A heating module, characterized in that: include: An electrode assembly, comprising an electrode cap and a columnar electrode, wherein the electrode cap is provided with a fixing hole for plugging and matching with the electrode; The heating component comprises a heating element and a conductive connector, wherein one end of the conductive connector is electrically connected to the heating element, and the other end of the conductive connector is at least partially inserted into the fixing hole and clamped between the electrode cap and the electrode.

2. The heating module according to claim 1, characterized in that: The conductive connector includes a first portion, the first portion is at least partially inserted into the fixing hole and abuts against the electrode, wherein the first portion is an elastic metal sheet, and the first portion is arranged at an angle with the axis of the fixing hole.

3. The heating module according to claim 2, characterized in that: The conductive connector also includes a second part having one end connected to the first part, and the other end of the second part is used for being electrically connected to the heating element, wherein the second part is arranged at an angle to the first part.

4. The heating module according to claim 3, characterized in that: The electrode cap includes a body and a receiving portion, the fixing hole is arranged on the body, one end of the receiving portion is connected to the body, and the other end of the receiving portion is a free end and extends in a radial direction away from the fixing hole, wherein the receiving portion abuts against the second portion.

5. The heating module according to any one of claims 1 to 4, characterized in that: The electrode cap is interference fit with the electrode.

6. The heating module according to claim 1, characterized in that: The surface of the portion where the conductive connector contacts the electrode is provided with a noble metal layer; or the surface where the conductive connector contacts the electrode is a rough surface, the roughness of which is less than the roughness of the remaining surfaces of the conductive connector.

7. The heating module according to claim 6, characterized in that: The thickness of the noble metal layer is 0.5 μm to 10 μm.

8. The heating module according to claim 6, characterized in that: At least a portion of the surface of the conductive connecting member abutting against the electrode is provided with a plurality of rows of grooves arranged at intervals to form the rough surface with uneven surfaces.

9. The heating module according to claim 6 or 8, characterized in that: The rough surface includes an etched area formed by etching or a laser area formed by laser, and the depth of the etched area or the laser area is 0.001-0.05 mm.

10. An electronic atomization device, characterized in that: It comprises the heating module according to any one of claims 1 to 9.

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