Electronic atomization device, atomization assembly and preparation method

Abstract

The invention provides an electronic atomization device, an atomization assembly and a preparation method. The electronic atomization device comprises a liquid storage cavity used for storing a liquid matrix; a fluid permeable heating element for heating the liquid substrate to generate an aerosol; the heating element includes a plurality of perforations to allow fluid to permeate through the heating element; the porous body is combined on the heating element and is used for sucking the liquid matrix from the liquid storage cavity and delivering the liquid matrix to the heating element; and the material of the porous body is at least partially embedded into the through holes of the heating element. According to the electronic atomization device, the material of the porous body is at least partially embedded into the through holes of the heating element, so that the in-plane thermal deformation of the heating element with the through holes in the heating process is reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of electronic atomization technology, and in particular to an electronic atomization device, an atomization component, and a preparation method. Background Art

[0002] Smoking articles (eg, cigarettes, cigars, etc.) burn tobacco during use to produce tobacco smoke. People have attempted to replace these tobacco-burning articles by creating products that release compounds without combustion.

[0003] An example of such a product is a heating device that releases compounds by heating rather than burning a material. For example, the material may be tobacco or other non-tobacco products that may or may not contain nicotine. As another example, there are aerosol providing products, such as so-called electronic atomization devices. These devices typically contain a liquid that is heated to vaporize it, thereby producing an inhalable aerosol. Known electronic atomization devices include a porous ceramic body to absorb a liquid matrix, and then print or deposit a heating track or a multi-heat film layer on the surface of the porous ceramic body, or mount a heating mesh on the surface of the porous ceramic body, thereby heating at least a portion of the liquid matrix in the porous ceramic body to generate an aerosol. Summary of the invention

[0004] An embodiment of the present application provides an electronic atomization device, comprising:

[0005] A liquid storage chamber, used for storing a liquid matrix;

[0006] a fluid permeable heating element for heating a liquid substrate to generate an aerosol; the heating element comprising a plurality of perforations to allow fluid to penetrate through the heating element;

[0007] A porous body is combined on the heating element and is used for absorbing the liquid matrix from the liquid storage chamber and delivering it to the heating element; and the material of the porous body is at least partially embedded in the through hole of the heating element.

[0008] In some embodiments, the porous body is formed by sintering a green body bonded to the heating element; the green body is made of a material from which the porous body is formed.

[0009] In some embodiments, the porous body and the heating element are connected as one body and are inseparable from each other.

[0010] In some embodiments, the heating element is substantially planar.

[0011] In some embodiments, the heating element comprises:

[0012] A first electrode portion and a second electrode portion are arranged at intervals along a length direction, and a heating portion electrically connected between the first electrode portion and the second electrode portion;

[0013] The perforations are arranged at the heating portion.

[0014] In some embodiments, the first electrode portion and the second electrode portion are dense, and the through-holes avoid the first electrode portion and the second electrode portion.

[0015] In some embodiments, the heating portion comprises a heating mesh woven from a plurality of intersecting conductive threads, and the perforations are defined by pores of the heating mesh.

[0016] In some embodiments, more than 90% of the perforations of the heating portion are embedded with material of the porous body.

[0017] In some embodiments, the maximum radial width or diameter of the perforation is between 20 microns and 4000 microns. In some further preferred embodiments, the maximum radial width or diameter of the perforation is between 500 microns and 3000 microns. In some further preferred embodiments, the maximum radial width or diameter of the perforation is between 1000 microns and 2000 microns.

[0018] In some embodiments, the heating element comprises:

[0019] A heating net is woven from a plurality of crossed conductive threads; the heating net comprises a heating portion and an electrical connection portion;

[0020] The electrode part is firmly bonded to the electrical connection part through a conductive dielectric material to form conductivity; the conductive dielectric material is formed by curing the conductive paste filled between the electrode part and the electrical connection part.

[0021] Another embodiment of the present application further provides an atomization assembly for an electronic atomization device, comprising:

[0022] a fluid permeable heating element, the heating element comprising a plurality of perforations to allow fluid to permeate through the heating element;

[0023] A porous body is combined on the heating element; and the material of the porous body is at least partially embedded in the through holes of the heating element.

[0024] Another embodiment of the present application further provides a method for preparing an atomization assembly, comprising:

[0025] obtaining a heating element, the heating element comprising a plurality of perforations to allow fluid to permeate through the heating element;

[0026] The material forming the porous body is prepared into a green embryo having plasticity;

[0027] bonding the green body to the heating element and causing the material of the green body to at least partially embed into the perforations of the heating element by applying pressure;

[0028] The heating element combined with the green body is sintered to form the green body into a porous body.

[0029] In the above electronic atomization device, the material of the porous body is at least partially embedded in the perforations of the heating element, thereby reducing the thermal deformation within the surface of the heating element with perforations during heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0031] Figure 1 is a schematic diagram of an electronic atomization device provided by an embodiment;

[0032] Figure 2 yes Figure 1 A schematic diagram of a specific embodiment of an atomizer;

[0033] Figure 3 yes Figure 2 A cross-sectional schematic diagram of the atomization assembly;

[0034] Figure 4 yes Figure 3 Schematic diagram of the exploded view of the mesoporous body and the heating element;

[0035] Figure 5 is a schematic diagram of combining the green embryo with the heating element in the preparation of the atomization component;

[0036] Figure 6 is a schematic diagram of a heating element according to yet another embodiment;

[0037] Figure 7 In one embodiment, the embryo is combined with Figure 6 A microscopic electron microscope scanning image of a part of the surface of the atomization component sintered after the heating element;

[0038] Figure 8 is a schematic diagram of a heating element according to yet another embodiment;

[0039] Fig. 9 is a schematic diagram of an atomization assembly of yet another embodiment;

[0040] Fig.10is a schematic diagram of a heating element according to yet another embodiment;

[0041] Fig.11 is a schematic diagram of a heating element according to yet another embodiment;

[0042] Fig.12 is a schematic diagram of a heating element according to yet another embodiment;

[0043] Fig.13 is a schematic diagram of a heating element according to yet another embodiment. DETAILED DESCRIPTION

[0044] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific implementation methods.

[0045] One embodiment of the present application provides an electronic atomization device, which can be found in Figure 1 As shown, the invention comprises a nebulizer 100 storing a liquid matrix and atomizing the liquid matrix to generate an aerosol, and a power supply mechanism 200 for supplying power to the nebulizer 100. Figure 1 In the illustrated embodiment, the atomizer 100 and the power supply mechanism 200 of the electronic atomization device are detachable relative to each other; an electronic atomization device having such an atomizer 100 and the power supply mechanism 200 detachable relative to each other, for example, a so-called "replaceable cartridge" electronic atomization device. Or in some other variant embodiments, the atomizer 100 and the power supply mechanism 200 of the electronic atomization device are tightly wrapped and fixed by the shell component of the electronic atomization device, so that the atomizer 100 and the power supply mechanism 200 cannot be detachable relative to each other from the inside of the shell component. An electronic atomization device having such an atomizer 100 and the power supply mechanism 200 that are not detachable relative to each other, for example, a so-called "integrated or disposable" electronic atomization device.

[0046] In an alternative embodiment, for example Figure 1 As shown, the power supply mechanism 200 includes a receiving cavity 270 arranged at one end along the length direction for receiving and accommodating at least a portion of the atomizer 100, and an electrical contact 230 at least partially exposed on the surface of the receiving cavity 270, for supplying power to the atomizer 100 when at least a portion of the atomizer 100 is received and accommodated in the power supply mechanism 200.

[0047] A sealing member 260 is disposed in the power supply mechanism 200, and the sealing member 260 separates at least a portion of the internal space of the power supply mechanism 200 to form the above receiving cavity 270. Figure 1In the exemplary embodiment shown, the seal 260 is configured to extend along the cross-sectional direction of the power mechanism 200, and is preferably made of a flexible material, thereby preventing the liquid matrix that seeps from the atomizer 100 into the receiving chamber 270 from flowing to the controller 220, sensor 250 and other components inside the power mechanism 200.

[0048] exist Figure 1 In the exemplary embodiment shown, the power supply mechanism 200 also includes a battery cell 210 for supplying power at the other end away from the receiving cavity 270 along the length direction; and a controller 220 arranged between the battery cell 210 and the receiving cavity, which can be operated to guide current between the battery cell 210 and the electrical contact 230.

[0049] During use, the power supply mechanism 200 includes a sensor 250 for sensing the suction airflow generated when the atomizer 100 is inhaled, and then the controller 220 controls the battery cell 210 to output current to the atomizer 100 according to the detection signal of the sensor 250 .

[0050] exist Figure 1 In the exemplary embodiment shown, the power supply mechanism 200 is provided with a charging interface 240 at the other end away from the receiving cavity 270 for charging the battery cell 210 .

[0051] Figure 2 Shows Figure 1 The schematic structural diagram of an embodiment of the atomizer 100 includes:

[0052] Main housing 10; Figure 2 As shown, the main housing 10 is generally in the shape of a vertically long cylinder, and of course the interior thereof is hollow and is a necessary functional component for storing and atomizing liquid matrix; the main housing 10 has a proximal end 110 and a distal end 120 which are opposite to each other along the length direction. The proximal end 110 is configured as an end for the user to inhale aerosol, and an air outlet 111 for the user to inhale is provided at the proximal end 110; and the distal end 120 is used as an end for combining with the power supply mechanism 200.

[0053] See also Figure 2 As shown, the main housing 10 is provided with a liquid storage chamber 12 for storing liquid matrix, and an atomizing assembly for sucking liquid matrix from the liquid storage chamber 12 and heating and atomizing the liquid matrix. Figure 2 In the schematic diagram shown, an aerosol transmission tube 11 is axially arranged in the main shell 10, and the space between the aerosol transmission tube 11 and the inner wall of the main shell 10 forms a liquid storage chamber 12 for storing a liquid matrix; the aerosol transmission tube 11 extends to or ends at the air outlet 111, so as to transmit the generated aerosol to the air outlet 111 for inhalation.

[0054] In some optional embodiments, the aerosol transmission tube 11 and the main shell 10 are integrally molded using a moldable material, thereby defining a liquid storage chamber 12 between the aerosol transmission tube 11 and the main shell 10, and the liquid storage chamber 12 has an opening toward the distal end 120.

[0055] See also Figure 2 and Figure 3 As shown, the nebulizer 100 further includes a nebulizing component for nebulizing at least a portion of the liquid matrix to generate an aerosol. Figure 2 As shown, the atomization assembly includes:

[0056] The porous body 30 is in fluid communication with the liquid storage chamber 12, and thus absorbs the liquid matrix;

[0057] The heating element 40 is combined with the porous body 30 to heat at least a portion of the liquid matrix in the porous body 30 to generate aerosol.

[0058] according to Figure 2 As shown in the figure, the porous body 30 is contained or held in the flexible sealing element 20. Also, the sealing element 20 basically surrounds the porous body 30, and the sealing element 20 is at least partially used to provide a seal between the main housing 10 and the porous body 30. The flexible sealing element 20 is made of a flexible material including silicone or a thermoplastic elastomer.

[0059] according to Figure 2 As shown, the porous body 30 is accommodated and retained in the sealing element 20, and the porous body 30 is in fluid communication with the liquid storage chamber 12 through the liquid channel 13 defined by the sealing element 20 to receive the liquid matrix. Figure 2 As shown by the middle arrow R1, the liquid in the liquid storage chamber 12 flows to the porous body 30 through the liquid channel 13 and is then absorbed and heated; and the aerosol generated is then output to the air outlet 111 through the aerosol transmission tube 11 to be inhaled by the user. Figure 2 As shown by the arrow R2.

[0060] according to Figure 2 As shown, the porous body 30 is basically arranged perpendicular to the longitudinal direction of the main housing 10; and an atomization chamber 340 is defined between the porous body 30 and the distal end 120 of the main housing 10, and the atomization chamber 340 is located on the side of the porous body 30 away from the liquid storage chamber 12; the atomization chamber 340 is used to contain the released aerosol. At least a portion of the heating element 40 is exposed in the atomization chamber 340. When inhaling, external air enters the atomization chamber 340 from the air inlet 22 of the distal end 120, and carries the aerosol in the atomization chamber 340 to the aerosol transmission tube 11, and then is inhaled by the user at the air outlet 111.

[0061] according to Figure 2As shown, the atomizer 100 further includes:

[0062] The electrical contact 21 penetrates from the distal end 120 into the atomizer 100 and is electrically connected to the heating element 40 by abutment or welding, so as to guide the current on the heating element 40 .

[0063] See also Figures 2 to 4 As shown, the porous body 30 is roughly configured to be in the shape of a plate or sheet. In some embodiments, the plate-like or sheet-like porous body 30 indicates that their thickness may be substantially smaller than its length and width. In some embodiments, the thickness of the porous body 30 is 0.1 mm to 3 mm; and the length dimension of the porous body 30 is 8 to 12 mm; and the width dimension of the porous body 30 is approximately between 2.5 and 4 mm. In some other variations, the porous body 30 may have more shapes, such as an arched, cup-shaped, trough-shaped, trapezoidal shape, and the like. Or, for example, the applicant provides details about the shape of an arched porous body element with an internal channel in Chinese patent application CN215684777U, and the configuration details of the porous body element for absorbing a liquid matrix and atomizing a liquid matrix, and the above-mentioned document is incorporated herein by reference in its entirety.

[0064] In some embodiments, the porous body 30 includes a conventional rigid porous material, such as a rigid foam metal, porous ceramic, porous glass, etc. formed by sintering the raw materials for preparing the porous body 30 and a pore-forming agent; and a large number of disordered micropores arranged inside the porous body 30 defined by sintering of the pore-forming agent to absorb and transfer the liquid matrix.

[0065] See also Figures 2 to 4 As shown, the porous body 30 has a first surface 310 and a second surface 320 that are opposite to each other; the first surface 310 is arranged toward the liquid storage chamber 12 and is fluidly connected to the liquid storage chamber 12 to absorb the liquid matrix; the heating element 40 is basically a planar heating element, which is combined on the second surface 320 of the porous body 30 and is used to heat at least part of the liquid matrix in the porous body 30 to generate an aerosol.

[0066] See also Figures 2 to 4 As shown, the porous body 30 is configured in a sheet or plate shape; the first surface 310 and the second surface 320 are flat extended planes; or in some other variations, the first surface 310 and the second surface 320 are curved surfaces, such as concave arc surfaces or convex arc surfaces. Figures 2 to 4 In the embodiment, the porous body 30 is in a square shape; in more variations, the shape of the porous body 30 may be a regular rectangle, a circle, an ellipse, or an irregular shape.

[0067] See also Figures 2 to 4As shown, the heating element 40 is arranged as a substantially planar heating element; and the heating element 40 includes a first electrode portion 41 and a second electrode portion 42 opposite to each other in the length direction, and a heating portion 43 extending between the first electrode portion 41 and the second electrode portion 42; the heating portion 43 is used to heat the liquid matrix to generate an aerosol, and the first electrode portion 41 and the second electrode portion 42 are used to guide current on the heating portion 43. After assembly, the electrical contact 21 passes through the distal end 120 into the atomizer 100 and abuts against the first electrode portion 41 and the second electrode portion 42, so as to be used to power the heating element 40.

[0068] exist Figures 2 to 4 In the embodiment, the heating portion 43 of the heating element 40 is fluid permeable; as used herein, "fluid permeable" means that an aerosol in a gas phase can easily pass through the heating portion 43. For example, in Figure 4 As shown in FIG. 4 , the heating portion 43 is provided with array-arranged perforations 431, so that the heating portion 43 is basically arranged in a net-like shape and is fluid-permeable. Figure 3 and Figure 4 In the embodiment, the first electrode portion 41 and the second electrode portion 42 are dense and impermeable to fluid.

[0069] In some specific embodiments, each perforation 431 of the plurality of perforations 431 of the fluid permeable heating portion 43 may have a diameter between 20 microns and 4000 microns. In some embodiments, each perforation 431 is between 20 microns and 4000 microns. In some further preferred embodiments, each perforation 431 is between 500 microns and 3000 microns. In some further preferred embodiments, the diameter of each perforation 431 is between 1000 microns and 2000 microns.

[0070] exist Figures 2 to 4 As shown, the heating element 40 is prepared independently; for example, the heating element 40 is prepared by forming a through hole 431 on a sheet-like resistive substrate; the heating element 40 includes a resistive material such as a metal material, a metal alloy, graphite, carbon, a conductive ceramic or other ceramic material and a metal material. Among them, suitable metal or alloy materials include at least one of nickel, cobalt, zirconium, titanium, nickel alloy, cobalt alloy, zirconium alloy, titanium alloy, nickel-chromium alloy, nickel-iron alloy, iron-chromium alloy, iron-chromium-aluminum alloy, iron-manganese-aluminum-based alloy or stainless steel.

[0071] In an embodiment, the porous body 30 and the heating element 40 are connected as one and cannot be separated. Figures 2 to 4 In the figure, the material of the porous body 30 is at least partially embedded in the heating element 40, specifically, the material of the porous body 30 is at least partially embedded in the through-holes 431 of the heating portion 43. Figure 4The mesoporous body 30 has an embedding portion 321 embedded in or extending into the through hole 431 of the heating portion 43 .

[0072] In some embodiments, the embedded portion 321 of the porous body 30 is made of a green material for preparing the porous body 30, which is embedded into the through hole 431 of the heating portion 43 and then sintered into a whole with the heating element 40. Figure 5 As shown, including:

[0073] S10, mixing raw materials such as ceramics and glass to form the porous body 30 with a pore-forming agent and a liquid additive into a slurry, and forming the slurry into a plastic green body 30a by mold injection molding, cast lamination, 3D printing, etc.; and Figure 5 As shown, the green embryo 30a has a first surface 310a and a second surface 320a; and a structure where no embedded portion 321 is formed on the second surface 320a;

[0074] S20, combining the plastic green embryo 30a with the heating element 40 by die casting, pressing, or warm isostatic pressing, as shown by arrow P1, and making the material of the green embryo 30a at least partially embedded in the through hole 431 of the heating part 43 during the die casting, pressing, or warm isostatic pressing;

[0075] S30, the die-cast or pressed green body 30a and the heating element 40 are sintered, and then the porous body 30 is formed by sintering, which is tightly sintered into one with the heating element 40 and has an embedded part 321 embedded in the through hole 431 of the heating part 43. Based on the green body 30a of a common porous ceramic material, the sintering temperature of S30 is controlled to be about 600°C, such as 500-800°C, which is slightly lower than the common ceramic sintering temperature; to avoid excessively high temperatures, such as above 1000°C, which may cause the heating element 40 to be overheated, deformed or oxidized.

[0076] In the preparation of the above atomizing assembly, the heating element 40 is prefabricated independently; the porous body 30 is formed by combining the raw material-prepared plastic embryo 30a with the heating element 40 and then sintering. Compared with the method of printing or mounting the heating element 40 on the surface of the prefabricated porous body 30, the material of the porous body 30 is at least partially embedded in the perforation 431 of the heating part 43, which reduces the thermal deformation of the heating element 40 in the plane during the heating process and helps to evenly and dispersely supply the liquid matrix to the heating part 43.

[0077] In the porous body 30 sintered after the green body 30 a is press-bonded to the heating element 40 , the pores defined by the pore former are interconnected, so that the liquid matrix can be delivered from the first surface 310 to the heating element 40 in any direction.

[0078] The atomizer assembly is sintered after the green embryo 30a is pressed and combined with the heating element 40, and the porous body 30 and the heating element 40 are inseparable. After the applicant's preliminary comparative test of the bonding force in the laboratory, the atomizer assembly of the porous body 30 and the heating element 40 of the present application is subjected to a simple test of hot and cold cycles, and the hot and cold cycles include repeatedly supplying power to the heating element 40 so that it is heated from room temperature to 350°C and then kept for about 3s before cooling to room temperature; when the number of hot and cold cycles of the atomizer assembly of the present application is about 395 times, the heating element 40 has no defects such as breakage, warping, or falling off or separation from the porous body 30; and when the applicant tested the conventional hot and cold cycles of the heating track printed on the porous body 30 to the same 395 times, visible cracks appeared on the printed heating track, and the edges of the heating area were blackened.

[0079] or Figure 6 A schematic diagram of a heating element 40a of yet another embodiment is shown, in which the heating element 40a comprises:

[0080] The first electrode portion 41a and the second electrode portion 42a are arranged in a spaced relationship, and the fluid-permeable heating portion 43a is located between the first electrode portion 41a and the second electrode portion 42a; the first electrode portion 41a and the second electrode portion 42a are arranged in opposite directions along the length direction of the heating element 40a. Figure 6 In the embodiment, the first electrode portion 41a and the second electrode portion 42a are configured to be square in shape; or in some other variations, the first electrode portion 41a and the second electrode portion 42a can also be configured to be circular, semicircular, elliptical, or the like.

[0081] In some implementations, the first electrode portion 41a and / or the second electrode portion 42a are made of a relatively low resistivity metal or alloy; for example, the first electrode portion 41a and / or the second electrode portion 42a include gold, silver, copper, nickel, or an alloy containing at least one of them. The first electrode portion 41a and / or the second electrode portion 42a mainly define an electrical connection area or portion of the heating element 40a. In addition, the first electrode portion 41a and / or the second electrode portion 42a are dense or non-fluid permeable.

[0082] In some implementations, the fluid permeable heating portion 43a is the portion mainly used for heating. In an embodiment, the heating portion 43a is a mesh woven by conductive wires, and then connected between the first electrode portion 41a and the second electrode portion 42a by welding or the like. For example, in some specific implementations, the heating portion 43a is formed by weaving with transverse conductive wires arranged along the length direction of the heating portion 43a and longitudinal conductive wires arranged along the width direction of the heating portion 43a. The perforations 431a in the woven mesh heating portion 43a make the heating portion 43a fluid permeable.

[0083] In some implementations, the resistivity of the conductive wire of the braided heating portion 43a is between 0.5 and 2 Ω mm 2 / m. And, in some implementations, suitable conductive wires include metal conductive wires: at least one of 430 / 304 / 316 / 316L / 317 / 317L / 904 stainless steel conductive wires, iron-chromium-aluminum conductive wires, nickel-iron alloy wires, Hastelloy wires, Inconel alloy wires, nickel-chromium alloy wires, and monel alloy wires. And in some implementations, the diameter of the conductive wire may range from about 10 μm to 100 μm. Or in some specific implementations, the diameter of the conductive wire is 15 to 20 μm.

[0084] In some embodiments, the ratio of the maximum radial width of the through hole 431a of the heating portion 43a woven by the conductive thread to the diameter of the conductive thread is greater than or equal to 2. Also, the maximum radial width of the through hole 431a of the heating portion 43a is between 0.02 and 2 mm.

[0085] Or in some other implementations, the conductive wires of the braided heating portion 43a are composite fiber wires, for example, the composite fiber wires are twisted or mixed with metal wires and inorganic fiber wires, such as carbon fiber wires, glass fiber wires, and the like.

[0086] Accordingly, the green embryo 30a is further bonded to the heating element 40a by pressing, and at least part of the material of the green embryo 30a is embedded in the through hole 431a of the heating portion 43a, and then the green embryo 30a is sintered to form the porous body 30. Figure 7 FIG. 1 shows a partial surface electron microscope scanning image of an atomizing component that is sintered after pressing and bonding a green body 30a to a heating element 40a; FIG. Figure 7 The through holes 431a of the middle heating portion 43a are substantially filled with the material of the embedded porous body 30. Figure 7 As shown in the results, more than 90% of the through holes 431a of the heating portion 43a are embedded with the material of the porous body 30; or in a more preferred embodiment, more than 95% of the through holes 431a of the heating portion 43a are embedded with the material of the porous body 30.

[0087] Fig. 9 and Fig.10 A schematic diagram of an atomization assembly of another embodiment is shown; in this embodiment, the heating element 40b is configured to be a mesh shape woven from conductive wires; in this embodiment, the mesh-shaped fluid-permeable heating element 40b is basically a rectangular shape with a constant width. And, in the mesh-shaped heating element 40b, the first electrical connection part 410b and the second electrical connection part 420b woven by the conductive wire define the electrical connection part of the heating element 40b. And in the prepared atomization assembly, the material of the porous body 30b is also embedded in the perforations of the first electrical connection part 410b and the second electrical connection part 420b.

[0088] In this embodiment, the atomization assembly further comprises:

[0089] The dense first electrode part 41b and the second electrode part 42b are defined by a metal alloy sheet with low resistivity, such as gold, silver, copper or an alloy containing them; the first electrode part 41b is combined with the first electrical connection part 410b, and the second electrode part 42b is combined with the second electrical connection part 420b; and the first electrode part 41b and the first electrical connection part 410b are tightly bonded by filling a conductive paste such as a conductive silver paste between them, and then the conductive paste such as a conductive silver paste is sintered and solidified to form a conductive dielectric material of the first electrode part 41b and the first electrical connection part 410b to tightly bond them and make them conductive. The filled conductive paste such as the conductive silver paste is at least partially embedded in the through-holes of the first electrical connection part 410b and the second electrical connection part 420b, and the conductive dielectric material formed by sintering and solidifying the conductive paste is also at least partially embedded in the through-holes of the first electrical connection part. Then, after preparation, the dense first electrode part 41b and the second electrode part 42b guide the current on the heating part 43b. exist Fig. 9 In the embodiment, the first electrode portion 41b and the second electrode portion 42b are configured to be square in shape; or in some other variations, the first electrode portion 41b and the second electrode portion 42b can also be configured to be circular, semicircular, elliptical, or the like.

[0090] or Fig.10 A schematic diagram of a heating element 40c woven from conductive threads in another embodiment is shown. In this embodiment, two connected fan-shaped notches 432c are arranged on both sides of the width of the heating portion 43c of the woven heating element 40c; or the notches 432c are wavy, etc. Fig.10 In the embodiment, the number of the notches 432c is two, and a protruding pointed tooth 433c is defined between them; this is beneficial for promoting uniform distribution of heat on the heating portion 43c.

[0091] or Fig.11A schematic diagram of a heating element 40d woven from a conductive wire mesh according to another embodiment is shown. In this embodiment, arc-shaped notches 432d are arranged on both sides of the width of the heating portion 43d of the woven heating element 40d, which is beneficial for promoting uniform distribution of heat on the heating portion 43c.

[0092] or Fig.11 A schematic diagram of a heating element 40e woven of conductive wires in another embodiment is shown, arc-shaped notches 432e are arranged on both sides of the width of the heating portion 43e of the heating element 40e; a first hole 411e is arranged on the first electrical connection portion 410e, and a second hole 421e is arranged on the second electrical connection portion 420e; the first hole 411e and / or the second hole 421e are more embedded by the material of the porous body 30 to improve the stability of the combination. In addition, a third hole 433e is arranged on the heating portion 43e; the third hole 433e is beneficial for promoting the increase of the resistance of the heating portion 43e and improving the uniformity of heat distribution.

[0093] In an embodiment, the first hole 411e, the second hole 421e and the third hole 433e are formed on the mesh heating element 40e by shearing, stamping, etc.; obviously, the diameters of the first hole 411e, the second hole 421e and the third hole 433e are larger than the maximum radial width of the perforation of the mesh heating element 40e; and the diameter of the third hole 433e is larger than the diameter of the first hole 411e and / or the second hole 421e.

[0094] or Fig.13 A schematic diagram of a heating element 40f of another embodiment is shown; in this embodiment, the heating element 40f is prepared by sheet etching or stamping, laser cutting, and the heating element 40f includes:

[0095] The first electrode portion 41f and the second electrode portion 42f, and the heating portion 43f located between the first electrode portion 41f and the second electrode portion 42f. The heating portion 43f is formed with a plurality of through holes 431f by etching or cutting, and the plurality of through holes 431f are arranged in an array so that the heating portion 43f is in a mesh shape; and the first electrode portion 41f and the second electrode portion 42f have no through holes 431f.

[0096] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application, but are not limited to the embodiments described in the specification. Furthermore, it is possible for a person of ordinary skill in the art to make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to the present application.

Claims

1. An electronic atomization device, characterized in that: include: A liquid storage chamber, used for storing a liquid matrix; a fluid permeable heating element for heating the liquid matrix to generate the aerosol; The heating element includes a plurality of perforations to allow fluid to penetrate through the heating element; A porous body is combined on the heating element and is used for absorbing the liquid matrix from the liquid storage chamber and delivering it to the heating element; and the material of the porous body is at least partially embedded in the through hole of the heating element.

2. The electronic atomization device according to claim 1, characterized in that: The porous body is formed by sintering a green body combined with the heating element; the green body is prepared from a material for forming the porous body.

3. The electronic atomization device according to claim 1 or 2, characterized in that: The porous body and the heating element are connected as one body and are inseparable from each other.

4. The electronic atomization device according to claim 1 or 2, characterized in that: The heating element is substantially planar.

5. The electronic atomization device according to claim 1 or 2, characterized in that: The heating element comprises: A first electrode portion and a second electrode portion are arranged at intervals along a length direction, and a heating portion electrically connected between the first electrode portion and the second electrode portion; The perforations are arranged at the heating portion.

6. The electronic atomization device according to claim 5, characterized in that: The first electrode portion and the second electrode portion are dense, and the through holes avoid the first electrode portion and the second electrode portion.

7. The electronic atomization device according to claim 5, characterized in that: More than 90% of the perforations of the heating portion are embedded with material of the porous body.

8. The electronic atomization device according to claim 5, characterized in that: The heating portion includes a heating mesh woven from a plurality of intersecting conductive threads, and the through holes are defined by pores of the heating mesh.

9. The atomizer according to claim 1 or 2, characterized in that: The heating element comprises: A heating net is woven from a plurality of crossed conductive threads; the heating net comprises a heating portion and an electrical connection portion; The electrode part is firmly bonded to the electrical connection part through a conductive dielectric material to form conductivity; the conductive dielectric material is formed by curing the conductive paste filled between the electrode part and the electrical connection part.

10. An atomization assembly for an electronic atomization device, characterized in that: include: a fluid permeable heating element, the heating element comprising a plurality of perforations to allow fluid to permeate through the heating element; a porous body, combined with the heating element; And the material of the porous body is at least partially embedded in the through holes of the heating element.

11. A method for preparing an atomization component for an electronic atomization device, characterized in that: include: obtaining a heating element, the heating element comprising a plurality of perforations to allow fluid to permeate through the heating element; The material forming the porous body is prepared into a green embryo having plasticity; bonding the green body to the heating element and causing the material of the green body to at least partially embed into the perforations of the heating element by applying pressure; The heating element combined with the green body is sintered to form the green body into a porous body.

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