Heating assembly and electronic atomization device

Abstract

The invention provides a heating assembly body and an electronic atomization device. The heating assembly body comprises a heating sheet, a heating element and a heating element, the electrode piece is provided with a first end and a second end which are oppositely arranged, the electrode piece is provided with an installation groove, the installation groove penetrates through the end face and the peripheral surface of the first end of the electrode piece, the groove distance of the installation groove is larger than or equal to the thickness of the heating piece, and at least part of the heating piece is located in the installation groove; the first end of the electrode piece is inserted and assembled in the electrode sleeve in the axial direction, the electrode sleeve is provided with a first positioning structure, the first end of the electrode piece is provided with a second positioning structure, and the first positioning structure and the second positioning structure are matched with each other to form circumferential extrusion force which is applied to the electrode piece and faces inwards, so that the electrode piece clamps the heating piece; therefore, the heating piece and the electrode piece are electrically connected without welding contact, and the electrode piece and the heating piece are in tight ohmic connection. In addition, the heating piece and the mounting groove are in double-face contact, so that the contact resistance between the electrode piece and the heating piece is small.

Description

Technical Field

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

[0002] Electronic atomization devices are widely used in people's lives. For example, air humidifiers, medical atomizers, and electronic suction devices are respectively used to atomize atomizing liquids such as water, liquid medicine, and atomizing oil. An electronic atomization device includes a heating element for heating and atomizing the atomizing liquid and a power supply assembly for supplying power to the heating element. The heating element generates joule heat through an electric current to heat the atomizing liquid, and is generally made of iron-based or nickel-based metal materials such as iron-chromium-aluminum and nickel-chromium-iron, and is connected to the power supply assembly by welding metal electrodes such as nickel at both ends of the heating element. However, heavy metal elements such as nickel and chromium are likely to precipitate at the welding point, resulting in product safety problems.

[0003] In the related art, to solve the above problems, a technical solution of a welding-free heating element is adopted. Specifically, the electrode part of the heating element and the electrode part of the power supply assembly are abutted and contacted by other components, so as to realize the power supply assembly supplying power to the heating element. However, since the electrode part of the heating element and the electrode part of the power supply assembly are prone to looseness, the contact resistance between the two is large, the resistance value is unstable or even an open circuit phenomenon occurs, resulting in extremely unstable operation of the heating element. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a heating assembly and an electronic atomization device, aiming to solve the problem that the connection between the heating element and the power supply assembly in the related art is prone to looseness.

[0005] To solve the above technical problem, the first aspect of the present invention provides a heating assembly, including:

[0006] A heating sheet;

[0007] An electrode member having a first end and a second end disposed opposite to each other. The electrode member is provided with a mounting groove that penetrates the end face and the outer peripheral surface of the first end of the electrode member, and the groove pitch of the mounting groove is greater than or equal to the thickness of the heating sheet. At least a part of the heating sheet is located in the mounting groove; and,

[0008] An electrode sleeve. The first end of the electrode member is axially inserted and assembled in the electrode sleeve. The electrode sleeve is provided with a first positioning structure, and the first end of the electrode member is provided with a second positioning structure. The first positioning structure and the second positioning structure cooperate with each other to form a circumferential squeezing force applied to the electrode member and directed inward, so that the electrode member clamps the heating sheet.

[0009] Optionally, the first positioning structure includes a positioning cavity provided in the electrode sleeve, and the diameter of the positioning cavity at the end closer to the electrode member is larger than that at the end farther from the electrode member; the second positioning structure includes a positioning portion provided at the first end of the electrode member, and the positioning portion is axially inserted and assembled in the positioning cavity.

[0010] Optionally, the diameter of the positioning cavity gradually increases along its insertion direction, and the diameter of the positioning portion gradually decreases along its insertion direction.

[0011] Optionally, the positioning portion is coaxially arranged with the positioning cavity, and at least one limiting plane is provided on the outer side of the positioning portion, and an included angle is formed between the limiting plane and the central axis of the positioning portion.

[0012] Optionally, an exhaust cavity is further provided in the electrode sleeve, the exhaust cavity penetrates through the end of the electrode sleeve far from the electrode member, and the exhaust cavity communicates with the positioning cavity.

[0013] Optionally, the opposite side walls of the mounting groove are arranged in parallel, and in the insertion direction of the electrode member, the distance gradient between the opposite side walls of the mounting groove increases or remains unchanged.

[0014] Optionally, the opposite side walls of the mounting groove have an included angle, and in the insertion direction of the electrode member, the distance between the opposite side walls of the mounting groove gradually increases.

[0015] Optionally, the ratio range of the groove pitch of the mounting groove to the thickness of the heating sheet is within 1:1 - 1:5.

[0016] Optionally, the heating sheet includes a heating portion and two electrode portions respectively connected to both ends of the heating portion, there are two electrode members, and the ends of the two electrode portions far from the heating portion are respectively arranged in the mounting grooves of the two electrode members.

[0017] Optionally, the top end of the mounting groove penetrates through the end face of the first end, and the bottom end is located inside the electrode member; the ratio of the groove pitch of the mounting groove to the difference between the groove pitch of the mounting groove and the thickness of the electrode portion is greater than or equal to the ratio of the distance between the longitudinal center of the electrode portion and the top end of the mounting groove to the distance between the longitudinal center of the electrode portion and the bottom end of the mounting groove.

[0018] Optionally, the electrode portion is provided with a positioning hole, and the positioning hole is located at the end where the electrode portion is connected to the heating portion.

[0019] In a second aspect of the present invention, an electronic atomization device is provided, including the heating assembly as described in any one of the above.

[0020] Compared with related technologies, a heating assembly and an electronic atomization device in the present invention have the following beneficial effects: when the electrode member is inserted and assembled in the electrode sleeve, the first positioning structure and the second positioning structure cooperate with each other to convert the axial force during the assembly process into a circumferential squeezing force applied to the electrode member and directed inward. The circumferential squeezing force is transmitted to the position where the electrode member contacts the heating sheet, causing the electrode member to clamp and press the heating sheet tightly, so that the heating sheet and the electrode member are in contact electrical connection without welding. Moreover, when the two sides of the heating sheet are respectively in contact with the opposite side walls of the installation groove, the clamping of the electrode member on the heating sheet is very firm, realizing a firm ohmic connection between the electrode member and the heating sheet. In addition, the two sides of the heating sheet are respectively in contact with the opposite side walls of the installation groove, realizing double-sided contact, which results in a larger contact area, can improve the connection reliability between the electrode member and the heating sheet, and at the same time reduces the contact resistance between the electrode member and the heating sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 is a schematic diagram of the overall structure of the heating assembly provided by an embodiment of the present invention;

[0023] Figure 2 is an assembly diagram between the electrode member and the heating sheet in the heating assembly provided by an embodiment of the present invention;

[0024] Figure 3 is a cross-sectional view of the heating assembly after the electrode member and the electrode sleeve are assembled provided by an embodiment of the present invention.

[0025] In the drawings, each reference numeral represents: 1, heating sheet; 11, heating part; 12, electrode part; 121, positioning hole; 2, electrode member; 21, installation groove; 22, positioning part; 3, electrode sleeve; 31, positioning cavity; 32, exhaust cavity. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will describe in detail the embodiments of the present invention. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present invention.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying 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 one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0029] Embodiment:

[0030] An embodiment of the present invention provides an electronic atomization device, which includes a liquid storage assembly, a heating assembly, and a power supply assembly. The heating assembly is respectively connected to the liquid storage assembly and the power supply assembly. The liquid storage assembly is used for storing atomization liquid, the heating assembly is used for heating and atomizing the atomization liquid, and the power supply assembly is used for supplying power to the heating assembly; wherein, the atomization liquid can be water, liquid medicine, e-liquid, etc. In a specific example, the atomization liquid is e-liquid, the liquid storage assembly can be an oil cup assembly, the power supply assembly can be a battery rod assembly, and the heating assembly is used for heating the e-liquid to atomize and generate aerosol for the user to inhale.

[0031] Please refer to Figure 1 、 Figure 2 and Figure 3 , the heating assembly includes a heating sheet 1, an electrode member 2, and an electrode sleeve 3. The electrode member 2 has a first end and a second end arranged oppositely. The electrode member 2 is provided with a mounting groove 21, and the mounting groove 21 penetrates through the end face and the outer peripheral surface of the first end of the electrode member 2, and the groove pitch of the mounting groove 21 is greater than or equal to the thickness of the heating sheet 1. At least a part of the heating sheet 1 is located in the mounting groove 21; the first end of the electrode member 2 is axially inserted and assembled in the electrode sleeve 3. The electrode sleeve 3 is provided with a first positioning structure, and the first end of the electrode member 2 is provided with a second positioning structure. The first positioning structure and the second positioning structure cooperate with each other to form a circumferential squeezing force applied to the electrode member 2 and directed inward, so as to clamp the heating sheet 1 by the electrode member 2.

[0032] When the electrode member 2 is inserted and assembled into the electrode sleeve 3, the first positioning structure and the second positioning structure cooperate with each other to convert the axial force during the assembly process into a circumferential extrusion force applied to the electrode member 2 and directed inward. The circumferential extrusion force is transmitted to the position where the electrode member 2 contacts the heating sheet 1, causing the electrode member 2 to clamp and press the heating sheet 1, so that the heating sheet 1 and the electrode member 2 are in non-welded electrical contact. Moreover, when the two sides of the heating sheet 1 are respectively in contact with the opposite side walls of the installation groove 21, the electrode member 2 clamps the heating sheet 1 very tightly, realizing a firm ohmic connection between the electrode member 2 and the heating sheet 1. Furthermore, when the two sides of the heating sheet 1 are respectively in contact with the opposite side walls of the installation groove 21, double-sided contact can be achieved, and the contact area is relatively large, which can improve the connection reliability between the electrode member 2 and the heating sheet 1, and at the same time make the contact resistance between the electrode member 2 and the heating sheet 1 relatively small.

[0033] It should be noted that an electronic atomization device for generating an aerosol is generally slender (ultra-thin) and has sufficient space in the length direction, but there is no space to realize the clamping (extrusion) function in the thickness direction. However, the technical solution provided by the embodiment of the present invention can realize a stable non-welded connection process between the electrode member 2 and the heating sheet 1 without changing the ultra-thin structure of the electronic atomization device. Moreover, the technical solution provided by the embodiment of the present invention does not require adding the number of parts and can be modified on the original structure. The electrode member 2 is made of metal. When the heating sheet 1 works, based on the similar thermal expansion coefficients of metals, the clamping force is affected by thermal expansion and contraction, so as to ensure that a sufficient large clamping force is provided to clamp the heating sheet 1.

[0034] Please refer to Figure 3 , the first positioning structure includes a positioning cavity 31 provided in the electrode sleeve 3. The diameter of the end of the positioning cavity 31 closer to the electrode member 2 is larger than the diameter of the end farther from the electrode member 2. The second positioning structure includes a positioning portion 22 provided at the first end of the electrode member 2. The positioning portion 22 is axially inserted and assembled into the positioning cavity 31, so that the axial force during the assembly process can be converted into a circumferential extrusion force applied to the electrode member 2 and directed inward, and then the heating sheet 1 is clamped and fixed in the installation groove 21, realizing a stable and reliable connection between the electrode member 2 and the heating sheet 1.

[0035] Please refer to Figure 3, in some embodiments, the diameter of the positioning cavity 31 gradually increases along its insertion direction, and the diameter of the positioning portion 22 gradually decreases along its insertion direction. For example, both the positioning cavity 31 and the positioning portion 22 are conical, and the positioning portion 22 and the positioning cavity 31 are adapted to each other, that is, the conical surface angles of the positioning portion 22 and the positioning cavity 31 are the same, and the diameter of the end of the positioning portion 22 close to the electrode sleeve 3 is smaller than the diameter of the end far from the electrode sleeve 3, and the diameter of the end of the positioning cavity 31 close to the electrode member 2 is larger than the diameter of the end far from the electrode member 2. Thus, during the process of inserting the electrode member 2 into the electrode sleeve 3, the electrode sleeve 3 can abut against the positioning portion 22 to generate a circumferential extrusion force, promoting the tight connection between the heating sheet 1 and the electrode member 2.

[0036] It should be noted that the positioning cavity 31 and the positioning portion 22 can also be columnar. Compared with the columnar positioning cavity 31 and the positioning portion 22, the conical positioning cavity 31 and the positioning portion 22 in this embodiment can further promote the tight contact between the heating sheet 1 and the electrode member 2 and prevent poor contact.

[0037] Preferably, the positioning portion 22 is coaxially arranged with the positioning cavity 31, and at least one limiting plane is provided on the outer side of the positioning portion 22. There is an included angle between the limiting plane and the central axis of the positioning portion 22, so that the limiting plane can limit the rotation of the positioning portion 22 relative to the electrode sleeve 3 in the positioning cavity 31, thereby realizing the positioning of the electrode member 2. According to actual needs, one limiting plane can be provided, or two, three, etc. can be provided, and multiple limiting planes can be continuously distributed or spaced apart. The included angle between the limiting plane and the central axis of the positioning portion 22 can be 10°, 15°, 20°, etc. The positioning portion 22 can be square, circular, or other complex special shapes, such as polygons.

[0038] In some other embodiments, the positioning cavity 31 can be a stepped cavity, and the cooperation between the positioning portion 22 and the stepped cavity can also form a circumferential extrusion force directed inward on the electrode member 2 to clamp the heating sheet 1 by the electrode member 2.

[0039] Please refer to Figure 3 , an exhaust cavity 32 is further provided in the electrode sleeve 3. The exhaust cavity 32 penetrates through the end of the electrode sleeve 3 far from the electrode member 2, and the exhaust cavity 32 communicates with the positioning cavity 31. The arrangement of the exhaust cavity 32 can discharge the air in the positioning cavity 31, thereby reducing the difficulty of inserting the positioning portion 22 into the positioning cavity 31, improving the smoothness of the insertion of the positioning portion 22, and further improving the clamping tightness between the electrode member 2 and the heating sheet 1.

[0040] It should be noted that, as Figure 3 shown, in the axial direction, the length of the positioning cavity 31 is greater than the length of the positioning portion 22, which can not only ensure that the positioning cavity 31 has enough space to accommodate the positioning portion 22, but also is beneficial to discharging air.

[0041] In some embodiments, the electrode member 2 is made of metal, such as copper-based (brass, pure copper), iron-based (stainless steel), nickel-based (pure nickel), aluminum (pure aluminum)-based, and is formed by cold heading or turning. The resistivity of the electrode member 2 is less than 1*10 -6 Ω·m, and the electrode resistance is less than 0.1 Ω after being connected in series with the heating element. The electrode sleeve 3 can be made of a metal material or a plastic material. When the first end of the electrode member 2 is electrically connected to the power supply assembly, the electrode sleeve 3 can be made of a metal material or have an insulating end face made of a plastic material. When the electrode sleeve 3 is made of a plastic material, the end face of the electrode sleeve 3 far from the electrode member 2 has an opening, so that the first end of the electrode member 2 is exposed to directly contact the conductive lead of the power supply assembly. When the second end of the electrode member 2 is electrically connected to the power supply assembly, the electrode sleeve 3 can be made of a metal material or a plastic material.

[0042] Please refer to Figure 3 , in some embodiments, the opposite side walls of the installation groove 21 are arranged in parallel, and in the insertion direction of the electrode member 2, the distance gradient between the opposite side walls of the installation groove 21 increases or remains unchanged. Specifically, when the distance gradient between the opposite side walls of the installation groove 21 increases, the groove spacing of the installation groove 21 is multiple widths, and the distance between the opposite side walls of the installation groove 21 near the electrode sleeve 3 is greater than the distance between the opposite side walls of the end far from the electrode sleeve 3, which is beneficial to both inserting the heating sheet 1 into the installation groove 21 and clamping the heating sheet 1 by the electrode member 2; when the distance between the opposite side walls of the installation groove 21 remains unchanged, it is beneficial to the formation of the installation groove 21. In other embodiments, an uneven structure or a corrugated structure can also be provided in the groove to further improve the clamping tightness between the heating sheet 1 and the electrode member 2, thereby reducing the contact resistance.

[0043] In other embodiments, the opposite side walls of the installation groove 21 have an included angle, and in the insertion direction of the electrode member 2, the distance between the opposite side walls of the installation groove 21 gradually increases. At this time, the opposite side walls of the installation groove 21 are inclined planes, that is, the installation groove 21 forms a flared opening on the electrode member 2, which is beneficial to both inserting the heating sheet 1 into the installation groove 21 and clamping the heating sheet 1 by the electrode member 2.

[0044] It should be noted that the ratio range of the groove spacing of the installation groove 21 to the thickness of the heating sheet 1 is within 1:1 - 1:5. For example, 1:1, 1:1.5, 1:2, 1:3, 1:5, etc. Among them, the thickness of the heating sheet 1 is between 0.06 mm and 0.2 mm. For example, 0.06 mm, 0.08 mm, 0.1 mm, 0.15 mm, 0.2 mm, etc.

[0045] Please refer to Figure 1 and Figure 2, in some embodiments, the heating sheet 1 includes a heating part 11 and two electrode parts 12 respectively connected to both ends of the heating part 11. The heating part 11 is configured to generate heat after being powered on, and the electrode parts 12 are configured to conduct the heating part 11. There are two electrode members 2, and the ends of the two electrode parts 12 away from the heating part 11 are respectively arranged in the installation grooves 21 of the two electrode members 2, so as to realize the stable connection between the heating sheet 1 and the electrode members 2 by clamping the electrode parts 12 in the installation grooves 21; moreover, after the electrode parts 12 are clamped within the electrode members 2, by setting, the magnitude of the clamping force can be increased, thereby further ensuring the connection stability between the heating sheet 1 and the electrode members 2 and realizing the tight ohmic connection between the electrode members 2 and the heating sheet 1. The electrode part 12 is at least provided with a contact plane, and the contact plane is coplanar with the heating part 11. The coplanar setting can prevent the heating sheet 1 from deforming during the clamping process.

[0046] Please refer to Figure 1 and Figure 2 , the top end of the installation groove 21 penetrates through the end face of the first end, and the bottom end is located within the electrode member 2; the ratio of the groove pitch of the installation groove 21 and the difference between the groove pitch of the installation groove 21 and the thickness of the electrode part 12 is greater than or equal to the ratio of the distance between the longitudinal center of the electrode part 12 and the top end of the installation groove 21 and the distance between the longitudinal center of the electrode part 12 and the bottom end of the installation groove 21; wherein, the longitudinal center of the electrode part 12 is the middle position of the side plate surface of the electrode part 12 in contact with the electrode member 2. For example, the distance between the longitudinal center of the electrode part 12 and the top end of the installation groove 21 is 20 mm, the distance between the longitudinal center of the electrode part 12 and the bottom end of the installation groove 21 is 4 mm, the groove pitch of the installation groove 21 is 0.1 mm, and the thickness of the electrode part 12 is 0.08 mm. Then the ratio of the distance between the longitudinal center of the electrode part 12 and the top end of the installation groove 21 and the distance between the longitudinal center of the electrode part 12 and the bottom end of the installation groove 21 is 5, and the ratio of the groove pitch of the installation groove 21 and the difference between the groove pitch of the installation groove 21 and the thickness of the electrode part 12 is also 5, thereby ensuring the connection stability between the heating sheet 1 and the electrode member 2.

[0047] Please refer to Figure 1 and Figure 2 , the electrode part 12 is provided with a positioning hole 121. The positioning hole 121 is located at the end of the electrode part 12 connected to the heating part 11. The positioning hole 121 is used to position the heating sheet 1, so as to facilitate the insertion of the electrode part 12 into the installation groove 21; moreover, during the process of clamping the electrode part 12 by the electrode member 2, the force conduction along the heating sheet 1 to the middle position of the heating sheet 1 can be interrupted, avoiding deformation of the heating sheet 1, thereby playing a supporting role.

[0048] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A heating assembly, characterized in that, it includes: a heating sheet; an electrode member having a first end and a second end arranged oppositely, the electrode member is provided with a mounting groove, the mounting groove penetrates through the end face and the outer peripheral surface of the first end of the electrode member, and the groove pitch of the mounting groove is greater than or equal to the thickness of the heating sheet, and at least a part of the heating sheet is located in the mounting groove; and, an electrode sleeve, the first end of the electrode member is axially inserted and assembled in the electrode sleeve, the electrode sleeve is provided with a first positioning structure, the first end of the electrode member is provided with a second positioning structure, and the first positioning structure and the second positioning structure cooperate with each other to form a circumferential squeezing force applied to the electrode member and directed inward, so that the electrode member clamps the heating sheet.

2. The heating assembly according to claim 1, characterized in that, the first positioning structure includes a positioning cavity arranged in the electrode sleeve, and the diameter of the end of the positioning cavity closer to the electrode member is larger than the diameter of the end farther from the electrode member; the second positioning structure includes a positioning portion arranged at the first end of the electrode member, and the positioning portion is axially inserted and assembled in the positioning cavity.

3. The heating assembly according to claim 2, characterized in that, the diameter of the positioning cavity gradually increases along its insertion direction, and the diameter of the positioning portion gradually decreases along its insertion direction.

4. The heating assembly according to claim 3, characterized in that, the positioning portion and the positioning cavity are coaxially arranged, and at least one limiting plane is arranged on the outer periphery of the positioning portion, and an included angle is formed between the limiting plane and the central axis of the positioning portion.

5. The heating assembly according to claim 2, characterized in that, an exhaust cavity is further arranged in the electrode sleeve, the exhaust cavity penetrates through the end of the electrode sleeve away from the electrode member, and the exhaust cavity communicates with the positioning cavity.

6. The heating assembly according to claim 1, characterized in that, the opposite side walls of the mounting groove are arranged in parallel, and along the insertion direction of the electrode member, the distance gradient between the opposite side walls of the mounting groove increases or remains unchanged.

7. The heating assembly according to claim 1, characterized in that, the opposite side walls of the mounting groove have an included angle, and along the insertion direction of the electrode member, the distance between the opposite side walls of the mounting groove gradually increases.

8. The heating assembly according to claim 1, characterized in that, the ratio range of the groove pitch of the mounting groove to the thickness of the heating sheet is within 1:1 - 1:

5.

9. The heating assembly according to claim 1, characterized in that, the heating sheet includes a heating portion and two electrode portions respectively connected to both ends of the heating portion, there are two electrode members, and the ends of the two electrode portions far from the heating portion are respectively arranged in the mounting grooves of the two electrode members.

10. The heating assembly according to claim 9, characterized in that, The top end of the installation groove penetrates through the end face of the first end, and the bottom end is located inside the electrode component; the ratio of the groove pitch of the installation groove to the difference between the groove pitch of the installation groove and the thickness of the electrode portion is greater than or equal to the ratio of the distance between the longitudinal center of the electrode portion and the top end of the installation groove to the distance between the longitudinal center of the electrode portion and the bottom end of the installation groove.

11. The heating assembly according to claim 9, wherein, the electrode portion is provided with a positioning hole, and the positioning hole is located at one end of the electrode portion connected to the heating portion.

12. An electronic atomization device, wherein, it includes the heating assembly according to any one of claims 1-11.

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