A heating element and an electronic atomization device

Abstract

The present application discloses a heating element and an electronic atomization device. The heating element includes: a first heat-conducting substrate, a second heat-conducting substrate, and a heating element; the first heat-conducting substrate, the heating element, and the second heat-conducting substrate are sequentially stacked and fixedly connected. By clamping the heating element between the high-strength first heat-conducting substrate and the second heat-conducting substrate, the overall strength of the heating element is improved, and at the same time, the heat-conducting substrates on both sides of the heating element can achieve uniform heat conduction, so that the heating element generates heat evenly.

Description

Technical Field

[0001] This application belongs to the technical field of electronic atomization devices, and particularly relates to a heating element and an electronic atomization device. Background Art

[0002] Electronic atomization devices such as electronic cigarettes usually adopt an insertable heating element. By at least partially inserting the insertable heating element into tobacco, the heating and atomization of the tobacco can be achieved.

[0003] The existing heating element forms a circuit by directly screen-printing a resistive paste on a ceramic substrate or a metal sheet with an insulating surface, resulting in insufficient strength of the finally formed heating element. Therefore, when the substrate deforms, the circuit is easily damaged, broken, or peeled off, and the heating element is heated unidirectionally, resulting in uneven heating temperatures on opposite sides of the heating element. Summary of the Invention

[0004] This application provides a heating element and an electronic atomization device to solve the above technical problems.

[0005] To solve the above technical problems, a technical solution adopted in this application is: to provide a heating element, the heating element includes:

[0006] A first heat-conducting substrate, a second heat-conducting substrate, and a heating element; the first heat-conducting substrate, the heating element, and the second heat-conducting substrate are sequentially laminated and fixedly connected.

[0007] Optionally, the surfaces of the first heat-conducting substrate and the second heat-conducting substrate that are close to each other are both flat surfaces;

[0008] The heating element includes a first connection portion, a main heating portion, and a second connection portion that are sequentially connected; the first connection portion and the second connection portion are used to be electrically connected to an external power supply so that the main heating portion is electrically connected to the external power supply to achieve heating.

[0009] Optionally, the first heat-conducting substrate, the second heat-conducting substrate, and the heating element are all flat sheet-like structures.

[0010] Optionally, the outer edge of the main heating portion is flush with at least one of the outer edges of the first heat-conducting substrate and / or the second heat-conducting substrate.

[0011] Optionally, the main heating portion includes a first sub-heating portion, a second sub-heating portion, and a third sub-heating portion;

[0012] The first sub-heating part and the second sub-heating part extend along the edges of the first heat-conducting substrate and the second heat-conducting substrate; one end of each of the first sub-heating part and the second sub-heating part is respectively connected to the first connecting part and the second connecting part; the third sub-heating part is arranged between the first sub-heating part and the second sub-heating part, and both ends are respectively connected to the first sub-heating part and the second sub-heating part;

[0013] The other ends of the first sub-heating part and the second sub-heating part are connected to each other or separated from each other.

[0014] Optionally, the first sub-heating part and the second sub-heating part are respectively flush with the outer edges on different sides of the first heat-conducting substrate and the second heat-conducting substrate.

[0015] Optionally, the heating body further includes an edge seal arranged between the first heat-conducting substrate and the second heat-conducting substrate; the edge seal at least partially surrounds the heating element;

[0016] The outer edge of at least one of the first heat-conducting substrate and the second heat-conducting substrate is flush with the outer edge of the edge seal.

[0017] Optionally, the outer edges of the edge seal, the first heat-conducting substrate and the second heat-conducting substrate are flush and form a receiving space; the main heating part is received in the receiving space.

[0018] Optionally, the edge seal is at least one of a metal sheet layer, a ceramic sheet layer or a glaze layer.

[0019] Optionally, the heating element includes a first connecting part, a main heating part and a second connecting part which are connected in sequence; the first connecting part and the second connecting part are used for being electrically connected to an external power supply so that the main heating part is electrically connected to the external power supply to realize heating;

[0020] At least one surface of the first heat-conducting substrate opposite to the second heat-conducting substrate is provided with a groove for receiving the main heating part.

[0021] Optionally, the edges of the first heat-conducting substrate and the second heat-conducting substrate are flush.

[0022] Optionally, both the first heat-conducting substrate and the second heat-conducting substrate include a mounting part and an insertion part, and the width of the insertion part is smaller than the width of the mounting part. The insertion parts on the first heat-conducting substrate and the second heat-conducting substrate together form a plug-in part of the heating body, and the plug-in part is used for at least partially being inserted into a piece to be heated to heat the piece to be heated.

[0023] Optionally, one side of the mounting portion of the second heat-conducting substrate away from the insertion portion has an opening, so that at least partial areas of the first connecting portion and the second connecting portion are exposed from the opening.

[0024] Optionally, a groove is provided on the surface of the first heat-conducting substrate opposite to the second heat-conducting substrate, and the groove accommodates the heating element.

[0025] To solve the above technical problems, another technical solution adopted in this application is: to provide an electronic atomization device, which includes a heating body and a main body portion of the atomization device;

[0026] The heating body is mounted on the main body portion of the atomization device, a power source is arranged in the main body portion of the atomization device, and the power source is electrically connected to the heating body to supply power to the heating body; the heating body is used to heat and atomize the object to be heated; the heating body is the heating body as described above.

[0027] The beneficial effects of this application are: This application provides an electronic atomization device and its heating body. Among them, by laminating and fixedly connecting the first heat-conducting substrate, the heating element and the second heat-conducting substrate in sequence, the heating element is clamped between the high-strength first heat-conducting substrate and the second heat-conducting substrate, which improves the overall strength of the heating body. At the same time, the heat-conducting substrates on both sides of the heating element can achieve uniform heat conduction, making the heating body heat evenly. Further, by setting the first heat-conducting substrate, the heating element and the second heat-conducting substrate into a flat sheet structure, they can be directly stacked and then fixedly connected by fitting, reducing the assembly difficulty and process requirements. Therefore, the heating body structure formed by adopting this scheme has high structural strength, uniform heating, high stability and reliability, and is simple to assemble and low in cost. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings, where:

[0029] Figure 1 is a schematic structural diagram of an embodiment of a heating body provided by this application;

[0030] Figure 2 is Figure 1 an exploded view of an embodiment of the shown heating body;

[0031] Figure 3 is Figure 1 a cross-sectional view of an embodiment of the shown heating body in the A-A' section;

[0032] Figure 4 is Figure 1 The sectional view of another embodiment of the heating element shown in the A-A' section;

[0033] Figure 5 is Figure 1 The sectional view of another embodiment of the heating element shown in the A-A' section;

[0034] Figure 6 is Figure 1 The sectional view of another embodiment of the heating element shown in the A-A' section

[0035] Figure 7 is Figure 1 The exploded view of another embodiment of the heating element shown;

[0036] Figure 8 is Figure 7 is Figure 1 The sectional view of another embodiment of the heating element shown in the A-A' section;

[0037] Figure 9 is Figure 1 The exploded view of another embodiment of the heating element shown;

[0038] Figure 10 is Figure 1 The sectional view of another embodiment of the heating element shown in the A-A' section;

[0039] Figure 11 The structural schematic diagram of an embodiment of the heating element in the heating element provided by the present application;

[0040] Figure 12 The structural schematic diagram of another embodiment of the heating element in the heating element provided by the present application;

[0041] Figure 13 is Figure 12 The structural schematic diagram of another embodiment of the heating element shown;

[0042] Figure 14 The structural schematic diagram of an embodiment of an electronic atomization device provided by the present application. Specific embodiments

[0043] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with 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 shall fall within the protection scope of the present application.

[0044] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present application, the directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0045] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0046] Please refer to Figures 1 - 3 , Figure 1 which is a schematic structural diagram of an embodiment of a heating element provided by the present application; Figure 2 is Figure 1 an exploded view of an embodiment of the heating element shown; Figure 3 is Figure 1 a cross-sectional view of an embodiment of the heating element shown in the A-A' section.

[0047] The heating element 10 includes a substrate 101 and a heating element 140. Among them, the substrate 101 may include a first heat-conducting substrate 110 and a second heat-conducting substrate 120. The first heat-conducting substrate 110 and the second heat-conducting substrate 120 are arranged oppositely to form an accommodating space; the heating element 140 is at least partially disposed in the accommodating space.

[0048] Specifically, the first heat-conducting substrate 110 and the second heat-conducting substrate 120 may be respectively attached to opposite sides of the heating element 140 and fixedly connected to the heating element 140. Therefore, the solution of the present application can reduce the processing accuracy of the first heat-conducting substrate and the second heat-conducting substrate by respectively attaching the first heat-conducting substrate and the second heat-conducting substrate to opposite sides of the heating element and fixedly connecting them to the heating element. And the first heat-conducting substrate and the second heat-conducting substrate can be made into an edge-sealed substrate to encapsulate the heating element by directly welding or bonding the edges of the first heat-conducting substrate and the second heat-conducting substrate. Therefore, the assembly difficulty can be reduced and the assembly efficiency can be improved. At the same time, the first heat-conducting substrate and the second heat-conducting substrate on both sides of the heating element can achieve uniform heat conduction and improve the heating uniformity of the heating element.

[0049] In this embodiment, after the first heat-conducting substrate 110, the heating element 140, and the second heat-conducting substrate 120 are stacked in sequence, they are fixedly connected by means of welding or bonding.

[0050] Among them, the edges of the substrate 101 can be welded by means of laser spot welding or the like, so that the edges of the first heat-conducting substrate 110 and the second heat-conducting substrate 120 can be welded and fixed, thereby realizing the fixed connection of the first heat-conducting substrate 110, the heating element 140, and the second heat-conducting substrate 120. It can be understood that when the first heat-conducting substrate 110 and the second heat-conducting substrate 120 are fixedly connected by a welding process, metal heat-conducting substrates can be selected.

[0051] Alternatively, a high-temperature-resistant insulating glue can also be used to adhesively connect the first heat-conducting substrate 110, the heating element 140, and the second heat-conducting substrate 120. Among them, the insulating glue can be respectively arranged between the first heat-conducting substrate 110 and the heating element 140 and between the second heat-conducting substrate 120 and the heating element 140. Alternatively, the insulating glue can also be accommodated in the internal space formed by surrounding the first heat-conducting substrate 110, the heating element 140, and the second heat-conducting substrate 120; further, the insulating glue can also be arranged along the edge of the substrate 101, so as to adhesively connect the parts of the first heat-conducting substrate 110, the heating element 140, and the second heat-conducting substrate 120 located in the edge area of the substrate 101. It can be understood that when the first heat-conducting substrate 110 and the second heat-conducting substrate 120 are fixedly connected by an adhesive process, metal heat-conducting substrates or ceramic heat-conducting substrates can be selected.

[0052] Among them, the connection method of the first heat-conducting substrate 110, the heating element 140, and the second heat-conducting substrate 120 can be selected according to the sizes of the first heat-conducting substrate 110, the heating element 140, and the second heat-conducting substrate 120, whether the edges are aligned, or the type of the heat-conducting substrate.

[0053] Specifically, please refer further to Figure 3 , in this embodiment, the sizes of the first heat-conducting substrate 110, the heating element 140, and the second heat-conducting substrate 120 in the width direction are equal. Therefore, the opposite sides of the heating element 140 can be respectively aligned with the opposite sides of the first heat-conducting substrate 110 in the width direction and aligned with the opposite sides of the second heat-conducting substrate 120 in the width direction. Here, the opposite sides of the heating element 140 can respectively correspond to the outer side walls of the first sub-heating part 1401 and the second sub-heating part 1402 as described later.

[0054] At this time, an insulating adhesive can be respectively disposed between the first heat-conducting substrate 110 and the heating element 140 and between the second heat-conducting substrate 120 and the heating element 140 to bond and fix the three. It should be noted that since the heating element needs to work in a high-temperature environment, an inorganic high-temperature-resistant adhesive is usually selected for bonding and insulation.

[0055] Please refer to Figure 4 , Figure 4 which Figure 1 is a cross-sectional view of another embodiment of the heating element shown in the A-A' section.

[0056] Similarly, in this embodiment, the first heat-conducting substrate 110 and the second heat-conducting substrate 120 are respectively disposed on opposite sides of the heating element 140; the first heat-conducting substrate 110 and the second heat-conducting substrate 120 are fixedly connected by welding or bonding.

[0057] Among them, a fixing portion 103 can be formed at the edges of the first heat-conducting substrate 110 and the second heat-conducting substrate 120 to fix the edges of the first heat-conducting substrate 110 and the second heat-conducting substrate 120. Among them, the fixing portion 103 can be a welding portion formed by welding the edges of the first heat-conducting substrate 110 and the second heat-conducting substrate 120; or it can also be an adhesive portion formed by adhesively fixing the edges of the first heat-conducting substrate 110 and the second heat-conducting substrate 120.

[0058] The fixing portion 103 is disposed along the edge of the substrate 101; wherein, the first heat-conducting substrate 110, the second heat-conducting substrate 120 and the fixing portion 103 form a receiving space for covering the heating element 140, and the heating element 140 is at least partially received in the receiving space.

[0059] In this embodiment, the outer contours of the first heat-conducting substrate 110 and the second heat-conducting substrate 120 can be set to be the same and substantially the same as the outer shape of the heating element 140.

[0060] When the first heat-conducting substrate 110 and the second heat-conducting substrate 120 are respectively disposed on opposite sides of the heating element 140, the two side walls of the first heat-conducting substrate 110 and the second heat-conducting substrate 120 in the width direction (i.e., the two side walls of the first heat-conducting substrate 110 and the second heat-conducting substrate 120 disposed along the length direction) can be respectively aligned with the opposite sides of the heating element 140. That is, the width dimensions of the first heat-conducting substrate 110, the second heat-conducting substrate 120 and the heating element 140 can be set to be the same.

[0061] In this solution, a fixing portion 103 can be formed in the edge regions of the first heat-conducting substrate 110 and the second heat-conducting substrate 120, so that the first heat-conducting substrate 110 and the second heat-conducting substrate 120 form an edge-sealed receiving space.

[0062] Refer to Figure 5 , Figure 5 which Figure 1 is a cross-sectional view of another embodiment of the heating element shown in the A-A' section.

[0063] The heating element 10 in this embodiment is different from Figure 3 the embodiment provided in that, in this embodiment, the width dimension of one of the first heat-conducting substrate 110 and the second heat-conducting substrate 120 can be set to be greater than the width dimension of the heating element 140.

[0064] In this embodiment, take the width dimension of the first heat-conducting substrate 110 being greater than the width dimension of the heating element 140 as an example.

[0065] Among them, the second heat-conducting substrate 120 is arranged on one side of the heating element 140 and is aligned with both sides of the heating element 140 in the width direction. The first heat-conducting substrate 110 is arranged on the other side of the heating element 140. Among them, one side wall of the first heat-conducting substrate 110 can be aligned with the heating element 140; or, in the width direction, neither of the opposite side walls of the first heat-conducting substrate 110 is aligned with the heating element 140.

[0066] Among them, since the width dimension of the first heat-conducting substrate 110 is greater than the width dimension of the heating element 140, the first heat-conducting substrate 110 can partially extend beyond the side of the heating element 140. At this time, the fixing portion 103 can be formed based on the part of the first heat-conducting substrate 110 that extends beyond the side of the heating element 140.

[0067] Among them, optionally, the cross-section of the fixing portion 103 can be triangular or trapezoidal (or approximately triangular or trapezoidal), so that the side wall of the formed substrate 101 can form an oblique angle, which is convenient for inserting the substrate 101 into the tobacco to be heated, etc.

[0068] It should be noted that the triangular or trapezoidal fixing portion 103 can be formed by grinding the welding area or the bonding area.

[0069] Refer to Figure 6 , Figure 6 which Figure 1 is a cross-sectional view of another embodiment of the heating element shown in the A-A' section.

[0070] The heating element 10 in this embodiment is different from Figure 3 the embodiment provided in that, in this embodiment, the width dimensions of both the first heat-conducting substrate 110 and the second heat-conducting substrate 120 are greater than the width dimension of the heating element 140.

[0071] Among them, in the width direction, the opposite sides of the first heat-conducting substrate 110 and the second heat-conducting substrate 120 are respectively disposed beyond the opposite sides of the heating element 140.

[0072] At this time, fixing portions 103 can be respectively formed on the opposite sides of the first heat-conducting substrate 110 and the second heat-conducting substrate 120, so that the first heat-conducting substrate 110 and the second heat-conducting substrate 120 can be fixedly connected.

[0073] In the above embodiment, both the first heat-conducting substrate 110 and the second heat-conducting substrate 120 are in a planar sheet structure. Here, the planar sheet structure can be expressed as that the surfaces of the first heat-conducting substrate 110 and the second heat-conducting substrate 120 that are close to each other are both planar, and the surfaces of the first heat-conducting substrate 110 and the second heat-conducting substrate 120 that are far from each other are also both planar.

[0074] In other embodiments, the surface of at least one of the first heat-conducting substrate 110 and the second heat-conducting substrate 120 on the side away from the other can be set as a curved surface, and this curved surface can be an arc surface or can also be a wavy surface. The advantage of this solution is that by setting at least one outer surface of the substrate 101 formed by the first heat-conducting substrate 110 and the second heat-conducting substrate 120 as a curved surface, the contact area between the substrate 101 and the tobacco to be heated, etc., can be increased, and the heating efficiency can be improved.

[0075] In the above Figures 3 - 6 In the provided embodiment, the substrate 101 is fixed by directly welding or directly bonding the edges of the first heat-conducting substrate 110 and the second heat-conducting substrate 120. In other embodiments, an edge seal can also be provided.

[0076] For details, please refer to Figure 1 、 Figures 7 - 8 , Figure 7 is Figure 1 the exploded view of another embodiment of the heating element shown; Figure 8 is Figure 7 is Figure 1 the cross-sectional view of another embodiment of the heating element shown in the A-A' section.

[0077] Among them, the substrate 101 can also include an edge seal 130. The first heat-conducting substrate 110, the second heat-conducting substrate 120, and the edge seal 130 can be separately formed components. By setting the edge seal 130 between the first heat-conducting substrate 110 and the second heat-conducting substrate 120, and making the opposite sides of the edge seal 130 respectively connected to the edge regions of the first heat-conducting substrate 110 and the second heat-conducting substrate 120, and then welding or bonding the position of the edge seal 130, the above-mentioned accommodation space can be formed for placing the heating element 140.

[0078] In this embodiment, the outer contour dimensions of the first heat-conducting substrate 110 and the second heat-conducting substrate 120 can both be set to be larger than the outer contour dimensions of the heating element 140. Therefore, when the first heat-conducting substrate 110, the heating element 140, and the second heat-conducting substrate 120 are stacked in sequence, the opposite sides of the outer contour of the heating element 140 are not aligned with the opposite sides of the substrate 101. That is, the opposite sides of the outer contour of the heating element 140 are recessed inward relative to the opposite sides of the substrate 101, and the edge seal 130 can be used to fill the recess. By welding or bonding the first heat-conducting substrate 110, the second heat-conducting substrate 120, and the edge seal 130, the first heat-conducting substrate 110, the second heat-conducting substrate 120, and the edge seal 130 can be fixedly connected to form the substrate 101, and the first heat-conducting substrate 110, the second heat-conducting substrate 120, and the edge seal 130 can enclose a receiving space for the heating element 140.

[0079] Among them, the edge seal 130 is at least one of a metal sheet layer, a ceramic sheet layer, or a glaze layer. It should be noted that different from the setting methods of the metal sheet layer and the ceramic sheet layer, the glaze layer can directly fill the glaze in the recess and be solidified into the structure of the edge seal 130 through high-temperature sintering and other methods.

[0080] In the above embodiment, the edge seal 130 and the first heat-conducting substrate 110 and the second heat-conducting substrate 120 are separate components respectively. In other embodiments, the edge seal 130 can also be integrally formed with one of the first heat-conducting substrate 110 and the second heat-conducting substrate 120.

[0081] Specifically, please refer to Figure 1 、 Figure 9 and Figure 10 。 Figure 9 is Figure 1 the exploded view of another embodiment of the heating element shown. Figure 10 is Figure 1 the cross-sectional view of another embodiment of the heating element shown in the A-A' section.

[0082] In this embodiment, the edge seal can be integrally formed with the first heat-conducting substrate 110. The edge seal can be arranged along the edge of the first heat-conducting substrate 110, so as to enclose a groove portion 111 for placing the heating element 140. The second heat-conducting substrate 120 can then cover the opening of the groove portion 111.

[0083] Optionally, a heat-conducting material may be filled on the surface of the heating element 140 to form a heat-conducting layer 150. The heat-conducting layer 150 can enable the heating element 140 to quickly transfer to the substrate 101, avoiding heat accumulation and thus preventing the problem of uneven temperature distribution in different parts of the substrate 101.

[0084] In an implementation manner of this embodiment, the depth of the groove portion 111 on the first heat-conducting substrate 110 may be set to be less than the thickness of the heating element 140. That is, when the heating element 140 is placed in the groove portion 111, a part of the heating element 140 is located outside the groove portion 111. At this time, the second heat-conducting substrate 120 can be attached to the surface of the heating element 140 facing away from the bottom of the groove portion 111, so that the first heat-conducting substrate 110 and the second heat-conducting substrate 120 do not contact and are connected by an edge seal 130.

[0085] The advantage of this solution is that the position of the heating element 140 can be positioned by setting the groove portion 111, and the depth of the groove portion 111 only needs to be set to be less than the thickness of the heating element 140, which can reduce the processing precision requirements of the groove portion 111, thereby reducing the processing difficulty of the first heat-conducting substrate 110.

[0086] In another implementation manner, the depth of the groove portion 111 on the first heat-conducting substrate 110 may also be set to be greater than or equal to the thickness of the heating element 140.

[0087] Both the first heat-conducting substrate 110 and the second heat-conducting substrate 120 may be metal sheets. Optionally, the groove portion 111 may be formed by laser cutting the first heat-conducting substrate 110. Or it may also be formed by machining.

[0088] Furthermore, in this implementation manner, when the first heat-conducting substrate 110 and the second heat-conducting substrate 120 are respectively arranged on opposite sides of the heating element 140, a heat-conducting insulating glue may be filled in the gap between the first heat-conducting substrate 110, the second heat-conducting substrate 120, and the heating element 140. The heat-conducting insulating glue can be used to fix the positions of the first heat-conducting substrate 110, the heating element 140, and the second heat-conducting substrate 120, facilitating subsequent welding or bonding and fixing of the first heat-conducting substrate 110 and the second heat-conducting substrate 120. At the same time, it can also enable the heat inside the heating element 140 to be quickly transmitted to the substrate 101, improving the temperature uniformity of the substrate 101.

[0089] Further, in this embodiment, the first heat-conducting substrate 110, the second heat-conducting substrate 120, and the edge seal 130 are all metal sheets. After the first heat-conducting substrate 110, the edge seal 130, and the second heat-conducting substrate 120 are stacked in sequence and fixedly connected, the substrate 101 as described above is formed. Among them, the surfaces of the first heat-conducting substrate 110 and the second heat-conducting substrate 120 facing each other are both flat surfaces.

[0090] Among them, the heating element 140 includes a conductive body and an insulating layer coated on the outer surface of the conductive body, so that the heating element 140 is insulated from the substrate 101 formed by the first heat-conducting substrate 110 and the second heat-conducting substrate 120.

[0091] Therefore, by coating the insulating layer on the conductive body of the heating element 140, it is not necessary to insulate the first heat-conducting substrate 110 and the second heat-conducting substrate 120. Therefore, when processing the first heat-conducting substrate 110 and the second heat-conducting substrate 120, the outer surfaces of the first heat-conducting substrate 110 and the second heat-conducting substrate 120 can be set as smooth surfaces, so as to ensure the smoothness of the outer surfaces of the first heat-conducting substrate 110 and the second heat-conducting substrate 120.

[0092] Further, in this embodiment, the heating body 10 can be at least partially inserted into the tobacco, so as to heat and atomize the tobacco or e-liquid. Therefore, ensuring the smoothness of the outer surfaces of the first heat-conducting substrate 110 and the second heat-conducting substrate 120 can prevent the problem of tobacco adhesion on the outer surfaces of the second heat-conducting substrate 120 and the first heat-conducting substrate 110.

[0093] In this embodiment, the substrate 101 can protect the heating element 140. At the same time, the first heat-conducting substrate 110 and the second heat-conducting substrate 120 can both be metal sheets. Among them, the first heat-conducting substrate 110, the second heat-conducting substrate 120, and the edge seal 130 can all be made of materials with good thermal conductivity. For example, the first heat-conducting substrate 110, the second heat-conducting substrate 120, and the edge seal 130 can be made of at least one of stainless steel, titanium-based composite materials, tungsten-based composite materials, titanium metal, or titanium alloy.

[0094] Further, the first end of the substrate 101 is used to form a plug-in portion 1011, and the plug-in portion 1011 is used to be at least partially inserted into the object to be heated to heat the object to be heated; the second end of the substrate 101 opposite to the first end has an opening 102, so that a part of the heating element 140 is exposed. Among them, the part of the heating element 140 exposed to the opening 102 can be used to be electrically connected to an external power source, and the heating element 140 is powered by the external power source, so that the heating element 140 can generate heat, and then heat the object to be heated.

[0095] Specifically, both the first heat-conducting substrate 110 and the second heat-conducting substrate 120 include an inserted portion and a mounting portion connected to each other. Moreover, the mounting portions of the first heat-conducting substrate 110 and the second heat-conducting substrate 120 are oppositely butted to jointly form the mounting portion 1012 of the substrate 101; the inserted portions of the first heat-conducting substrate 110 and the second heat-conducting substrate 120 are oppositely butted to form the inserted portion 1013 of the substrate 101. Among them, one end of the inserted portion 1013 of the substrate 101 away from the mounting portion 1012 is a tip, and this tip can form the plugging portion 1011 of the substrate 101.

[0096] Among them, one side of the second heat-conducting substrate 120 away from the plugging portion 1011 of the substrate 101 has a notch, so that the first heat-conducting substrate 110 and the second heat-conducting substrate 120 can form the opening 102 described above after cooperation, and the heating element can be partially exposed through this notch; at this time, the edge seal 130 is arranged corresponding to the entire edge of the inserted portion and the other edges of the mounting portion except the notch.

[0097] In one embodiment, the first heat-conducting substrate 110 is strip-shaped and one end of the first heat-conducting substrate 110 is chamfered to form the plugging portion 1011, and the other end is a flush structure. That is to say, the first heat-conducting substrate 110 includes a rectangular portion and a triangular portion arranged at one end of the rectangular portion.

[0098] When the first heat-conducting substrate 110 and / or the second heat-conducting substrate 120 are provided with a groove portion 111, the groove portion 111 also includes a rectangular portion and a triangular portion arranged at one end of the rectangular portion. The shape of the second heat-conducting substrate 120 matches the shape of the first heat-conducting substrate 110.

[0099] Among them, the second end portion of the first heat-conducting substrate 110 close to the substrate 101 is exposed relative to the second heat-conducting substrate 120, so that the heating element 140 is partially exposed. Specifically, the length of the second heat-conducting substrate 120 can be set to be less than the length of the first heat-conducting substrate 110. At the position close to the second end of the substrate 101, the side of the heating element 140 close to the second heat-conducting substrate 120 can be used as the exposed surface of the heating element 140, and this exposed surface can be used for electrical connection with an external power supply.

[0100] Among them, the exposed portion of the heating element 140 located at the second end of the substrate 101 can be electrically connected to an external power supply through a welding wire. Among them, the length H of the exposed portion of the heating element 140 located at the second end of the substrate 101 can be 2-3 mm, such as the length H can be 2 mm, 2.5 mm or 3 mm.

[0101] In the above-described embodiments, the insertion portion 1013 formed by the tips of the first heat-conducting substrate 110 and the second heat-conducting substrate 120 can be used as the plugging top end for plugging into the tobacco to be heated. The mounting portion 1012 formed by the first heat-conducting substrate 110 and the second heat-conducting substrate 120 can be used to be fixedly connected to a preset mounting member. Among them, the width of the insertion portion 1013 is smaller than the width of the mounting portion 1012.

[0102] In this solution, by setting the width of the mounting portion 1012 to be greater than the width of the insertion portion 1013, the strength of the mounting portion 1012 of the substrate 101 can be improved, and the mounting stability of the substrate 101 can be improved.

[0103] Optionally, in the embodiments shown above, the second heat-conducting substrate 120 and the first heat-conducting substrate 110 can be fixedly connected by welding or by bonding with a high-temperature resistant inorganic adhesive. For example, the second heat-conducting substrate 120 and the first heat-conducting substrate 110 can be welded and fixed by welding methods such as spot welding or laser welding, or the second heat-conducting substrate 120 and the first heat-conducting substrate 110 can also be adhesively fixed with an insulating adhesive having good heat resistance.

[0104] Please further refer to Figure 11 。 Figure 11 It is a schematic structural diagram of an embodiment of a heating element in a heating body provided by the present application.

[0105] Among them, the heating element 140 includes a first connection portion 141, a main heating portion 142, a second connection portion 143, and two connection wires 144 connected in sequence.

[0106] The first connection portion 141 and the second connection portion 143 are arranged side by side and spaced apart at the second end of the substrate 101 and are exposed through the opening 102; the first connection portion 141 and the second connection portion 143 are used for electrically connecting to an external power source so that the main heating portion 142 is electrically connected to the external power source and then generates heat. Among them, the impedance of both the first connection portion 141 and the second connection portion 143 is smaller than the impedance of the main heating portion 142. Specifically, the cross-sectional areas of both the first connection portion 141 and the second connection portion 143 are larger than the cross-sectional area of the main heating portion 142.

[0107] In this embodiment, the two connection wires 144 can be electrically connected to the first connection portion 141 and the second connection portion 143 respectively, so that the first connection portion 141 and the second connection portion 143 can be electrically connected to an external power source. Specifically, one end of each of the two connection wires 144 can be electrically connected to the first connection portion 141 and the second connection portion 143 respectively; the other ends of the two connection wires 144 can be electrically connected to the positive and negative electrodes of an external power source respectively.

[0108] One end of each of the two connecting wires 144 can be electrically connected to the exposed portions of the first connecting portion 141 and the second connecting portion 143 respectively from the opening 102. For example, they can be fixed by welding. And an insulating protective layer (not shown in the figure) can be covered at the connection of the connecting wire 144 and the first connecting portion 141 or the second connecting portion 143. Through the insulating protective layer, the connecting wire 144 and the first connecting portion 141 or the second connecting portion 143 can be covered, so as to protect the exposed portions of the connecting wire 144 and the first connecting portion 141 or the second connecting portion 143.

[0109] In this embodiment, the insulating protective layer can be formed by sintering an insulating material. Specifically, after one end of each of the two connecting wires 144 is electrically connected to the first connecting portion 141 and the second connecting portion 143 respectively, the connected part can be glazed and sealed.

[0110] Among them, the main heating part 142 can be in the form of continuous broken lines. Specifically, the main heating part 142 can include a plurality of transverse heating parts 1421 and a plurality of longitudinal heating parts 1422, and the plurality of transverse heating parts 1421 and the plurality of longitudinal heating parts 1422 are alternately connected in sequence.

[0111] Please refer to Figure 7 , the main heating part 142 includes a plurality of transverse heating parts 1421, a plurality of longitudinal heating parts 1422 and diagonal heating parts 1423. Among them, the main heating part 142 can be divided into a first sub-heating area 145 and a second sub-heating area 146. Both the first sub-heating area 145 and the second sub-heating area 146 can include a plurality of transverse heating parts 1421, a plurality of longitudinal heating parts 1422 and at least one diagonal heating part 1423.

[0112] Among them, both the first sub-heating area 145 and the second sub-heating area 146 can include one diagonal heating part 1423, and one ends of the two diagonal heating parts 1423 are connected to match the tip shape of the plugging part 1011. After the two diagonal heating parts 1423 are connected, they can be arranged at the position corresponding to the plugging part 1011 to supply heat to the area of the plugging part 1011.

[0113] One ends of the first sub-heating area 145 and the second sub-heating area 146 far from their respective diagonal heating parts 1423 can be connected to the first connecting portion 141 and the second connecting portion 143 respectively.

[0114] Among them, for the first sub-heating area 145, multiple transverse heating parts 1421 and multiple longitudinal heating parts 1422 arranged between the first connecting part 141 and its diagonal heating part 1423 can be connected alternately in sequence; similarly, for the second sub-heating area 146, multiple transverse heating parts 1421 and multiple longitudinal heating parts 1422 arranged between the second connecting part 143 and its diagonal heating part 1423 can also be connected alternately in sequence. And a broken line groove 147 with equal width at each place can be formed between the first sub-heating area 145 and the second sub-heating area 146.

[0115] Alternatively, in other embodiments, the heating element 140 can also be set to other shapes.

[0116] Please refer to Figure 12 , Figure 12 which is a schematic structural diagram of another embodiment of the heating element in the heating body provided by the present application.

[0117] In this embodiment, the heating element 140 includes a first connecting part 141, a main heating part 142, a second connecting part 143, and two connecting wires 144 connected in sequence. The connection relationship among the first connecting part 141, the main heating part 142, the second connecting part 143, and the two connecting wires 144 is the same as that in Figure 7 the embodiment shown.

[0118] Among them, in this embodiment, the main heating part 142 includes a first sub-heating part 1401, a second sub-heating part 1402, and a third sub-heating part 1403.

[0119] The first sub-heating part 1401 and the second sub-heating part 1402 extend along the edge of the substrate 101; one end of each of the first sub-heating part 1401 and the second sub-heating part 1402 is respectively connected to the first connecting part 141 and the second connecting part 143; the other ends of the first sub-heating part 1401 and the second sub-heating part 1402 both extend towards the first end of the substrate 101 and are connected to each other; the third sub-heating part 1403 is arranged between the first sub-heating part 1401 and the second sub-heating part 1402, and both ends are respectively connected to the first sub-heating part 1401 and the second sub-heating part 1402.

[0120] Among them, optionally, the first sub-heating part 1401 and the second sub-heating part 1402 near the first end of the substrate 101 can respectively include a broken line part, and the first sub-heating part 1401 and the second sub-heating part 1402 are arranged close to each other and connected to each other. At this time, the broken line parts on the first sub-heating part 1401 and the second sub-heating part 1402 can form a triangle matching the insertion part 1011 of the substrate 101.

[0121] In this embodiment, the number of the third sub-heating parts 1403 can be 1, or can also be 2 or more than 2, and the number can be set as needed. By setting the third sub-heating parts 1403, the overall strength of the heating element 140 can be improved, and the stability of the overall shape of the heating element 140 can be improved.

[0122] Please refer to Figure 13 . Figure 13 It is Figure 12 a schematic structural diagram of another embodiment of the heating element shown.

[0123] In this embodiment, the difference from the Figure 12 heating element shown is that in this embodiment, the first sub-heating part 1401 and the second sub-heating part 1402 are spaced apart (i.e., the electrical connection is disconnected) at the position near the first end of the substrate 101. At this time, the first sub-heating part 1401 and the second sub-heating part 1402 can be electrically connected through the third sub-heating part 1403 in the middle area.

[0124] Optionally, the heating element 140 can be a self-supporting metal heating element. The heating element 140 can be a metal sheet, and the conductive body of the heating element 140 can be a metal conductor with a certain strength and not easy to deform; the metal conductor can be made of one or more of nickel-chromium alloy, iron-chromium-aluminum alloy, nickel or tungsten. For example, a conductive body with a predetermined pattern is formed by cutting or etching a self-supporting metal sheet. The insulating layer of the heating element 140 can be formed on the surface of the conductive body by coating, sputtering, chemical etching or electrophoresis forming methods.

[0125] The coating forming method can include coating a nano-silica insulating coating on the surface of the conductive body to form an insulating layer; the sputtering forming method can include sputtering nitrides, oxides, carbides, etc. on the surface of the conductive body to form an insulating layer; the chemical etching and electrophoresis forming method can include immersing the conductive body in a phosphate compound solution, and then forming an insulating layer on the surface of the conductive body by chemical etching, or forming an insulating layer on the surface of the conductive body by electrophoresis processing technology.

[0126] After the surface of the heating element 140 is insulated, the heating element 140 can be placed between the first heat-conducting substrate 110 and the second heat-conducting substrate 120, and the heating element 140 can be encapsulated.

[0127] Furthermore, based on the same inventive concept, the present application also provides an electronic atomization device. Please refer to Figure 14 , Figure 14 a schematic structural diagram of an embodiment of an electronic atomization device provided by the present application.

[0128] The electronic atomization device 20 includes the heating element 10 and the atomization device main body 210 as described above; the heating element 10 can be installed on the atomization device main body 210 through the mounting base 201. A power source is provided inside the atomization device main body 210, and the power source is electrically connected to the heating element 10 to supply power to the heating element 10, so that the heating element 10 can be used to heat and atomize the object to be heated. Among them, the electronic atomization device 20 can be an electronic cigarette or an atomizer, etc., which is not further limited here.

[0129] In summary, in this application, the first heat-conducting substrate, the heating element, and the second heat-conducting substrate are sequentially laminated and fixedly connected, and the heating element is clamped between the high-strength first heat-conducting substrate and the second heat-conducting substrate, which improves the overall strength of the heating element. At the same time, the heat-conducting substrates on both sides of the heating element can achieve uniform heat conduction, making the heating element heat evenly. Further, by setting the first heat-conducting substrate, the heating element, and the second heat-conducting substrate as a planar sheet structure, they can be directly stacked and then fixedly bonded, reducing the assembly difficulty and process requirements. Therefore, the heating element structure formed by this solution has high structural strength, uniform heating, high stability and reliability, and is simple to assemble and low in cost. Further, in the above solution of this application, heat-conducting materials are filled in the gaps between the substrates and the heating element, so as to improve the efficiency of heat conduction from the heating element to the substrates, and further improve the uniformity of heat distribution on the substrates; further, by setting edge seals at the edges of the first heat-conducting substrate and the second heat-conducting substrate, an accommodation space for placing the heating element is formed after the first heat-conducting substrate, the second heat-conducting substrate, and the edge seals are fixedly connected, which can reduce the overall processing and assembly difficulty of the substrates, and thus improve the production efficiency of the heating element. By providing groove portions on the first heat-conducting substrate and / or the second heat-conducting substrate, the setting position of the heating element can be positioned, and the depth of the groove portion only needs to be set to be less than the thickness of the heating element, which can reduce the processing precision requirements of the groove portion, and thus reduce the processing difficulty of the first heat-conducting substrate. By setting the width of the installation portion to be greater than the width of the insertion portion, the strength of the installation portion of the substrate can be improved, and the installation stability of the substrate can be improved.

[0130] The above are only the embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A heating element, characterized in that, The heating element includes: a first heat-conducting substrate, a second heat-conducting substrate, and a heating element; The first heat-conducting substrate, the heating element, and the second heat-conducting substrate are sequentially stacked and fixedly connected; The heating element includes a main heating portion, and the outer edge of the main heating portion is flush with the outer edge of at least one of the first heat-conducting substrate and / or the second heat-conducting substrate; The heating element further includes an edge seal disposed between the first heat-conducting substrate and the second heat-conducting substrate, and the edge seal at least partially surrounds the heating element; the first heat-conducting substrate, the second heat-conducting substrate, and the edge seal jointly enclose a receiving space for receiving the heating element; the edge seal is a metal sheet layer; At least one surface of the first heat-conducting substrate opposite to the second heat-conducting substrate is provided with a groove portion for receiving the main heating portion, and the depth of the groove portion is less than the thickness of the heating element; in the thickness direction of the heating element, the heating element is partially located outside the groove portion, and the first heat-conducting substrate and the second heat-conducting substrate do not contact and are connected by the edge seal.

2. The heating element according to claim 1, characterized in that, The surfaces of the first heat-conducting substrate and the second heat-conducting substrate that are close to each other are both flat; The heating element includes a first connecting portion, the main heating portion, and a second connecting portion that are sequentially connected; the first connecting portion and the second connecting portion are used for electrically connecting to an external power source so that the main heating portion is electrically connected to the external power source to realize heating.

3. The heating element according to claim 2, wherein The first heat-conducting substrate, the second heat-conducting substrate, and the heating element are all in a planar sheet structure.

4. The heating element according to claim 2, wherein The main heating portion includes a first sub-heating portion, a second sub-heating portion, and a third sub-heating portion; The first sub-heating portion and the second sub-heating portion extend along the edges of the first heat-conducting substrate and the second heat-conducting substrate; one end of each of the first sub-heating portion and the second sub-heating portion is respectively connected to the first connecting portion and the second connecting portion; the third sub-heating portion is disposed between the first sub-heating portion and the second sub-heating portion, and both ends are respectively connected to the first sub-heating portion and the second sub-heating portion; The other ends of the first sub-heating portion and the second sub-heating portion are connected to or separated from each other.

5. The heating element according to claim 4, characterized in that, The first sub-heating portion and the second sub-heating portion are respectively flush with the outer edges on different sides of the first heat-conducting substrate and the second heat-conducting substrate.

6. The heating element according to claim 2, wherein The outer edge of at least one of the first heat-conducting substrate and the second heat-conducting substrate is flush with the outer edge of the edge seal.

7. The heating element according to claim 6, wherein The outer edges of the edge seal, the first heat-conducting substrate, and the second heat-conducting substrate are flush and form a receiving space; the main heating portion is received in the receiving space.

8. The heating element according to claim 1, characterized in that, The heating element includes a first connecting portion, a main heating portion, and a second connecting portion that are sequentially connected; the first connecting portion and the second connecting portion are used for electrically connecting to an external power source so that the main heating portion is electrically connected to the external power source to realize heating.

9. The heating element according to claim 8, wherein, The edges of the first heat-conducting substrate and the second heat-conducting substrate are flush.

10. The heating element according to claim 2 or 6, characterized in that, The first heat-conducting substrate and the second heat-conducting substrate both include a mounting portion and an insertion portion, and the width of the insertion portion is smaller than the width of the mounting portion. The insertion portions on the first heat-conducting substrate and the second heat-conducting substrate together form a plug-in portion of the heating element, and the plug-in portion is used to be at least partially inserted into the object to be heated to heat the object to be heated.

11. The heating element according to claim 10, characterized in that, One side of the mounting portion of the second heat-conducting substrate away from the insertion portion has an opening, so that at least partial regions of the first connecting portion and the second connecting portion are exposed from the opening.

12. The heating element according to claim 11, wherein, The surface of the first heat-conducting substrate opposite to the second heat-conducting substrate is provided with the groove portion, and the groove portion accommodates the heating element.

13. An electronic atomization device, characterized in that, The electronic atomization device includes a heating element and an atomization device main body portion; The heating element is mounted on the atomization device main body portion, and a power source is arranged in the atomization device main body portion. The power source is electrically connected to the heating element to supply power to the heating element; the heating element is used to heat and atomize the object to be heated; the heating element is the heating element according to any one of claims 1-12.

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