CN114246374A

CN114246374A - Heating element and aerosol forming device

Info

Publication number: CN114246374A
Application number: CN202011592633.8A
Authority: CN
Inventors: 西克宇; 李亚飞; 张立超; 谷岩; 于春生; 郭辉
Original assignee: Shenzhen Smoore Technology Ltd
Current assignee: Shenzhen Smoore Technology Ltd
Priority date: 2020-09-23
Filing date: 2020-12-29
Publication date: 2022-03-29
Also published as: KR20230010751A; EP4218447A1; EP4218447A4; WO2022062444A1; JP7514961B2; JP2023530735A

Abstract

The application provides a heating element and aerosol-forming device. The heating assembly comprises a substrate, a heating body, a first electrode and a second electrode; wherein the substrate is for at least partial insertion into an aerosol-forming substrate and has a first end and a second end; at least one heating body is embedded in the substrate, and the heating body is provided with a first connecting end and a second connecting end opposite to the first connecting end; at least one of the first electrode and the second electrode extends from the first end to the second end, one of the first electrode and the second electrode is electrically connected with the first connection end, and the other electrode is electrically connected with the second connection end; wherein at least one heater is for insertion into the aerosol-forming substrate and is powered by the first and second electrodes to generate heat. The heating component can avoid the problem that the heating body falls off from the substrate to cause failure when the heating body generates heat through high temperature, and greatly improves the reliability of the heating component.

Description

Heating element and aerosol forming device

Technical Field

The invention relates to the technical field of heating non-combustion smoke generating equipment, in particular to a heating component and an aerosol forming device.

Background

Electronic cigarettes are used as cigarette substitutes, and are more and more concerned and favored by people due to the advantages of safe, convenient, healthy, environment-friendly and the like; for example, the electronic cigarette is not heated to burn, which is also called a heating non-combustion aerosol forming apparatus.

The heating mode of the existing heating non-combustible aerosol forming device is generally tubular peripheral heating or central embedded heating; tubular peripheral heating means that a heating tube is wrapped around the outside of an aerosol-forming substrate (e.g. tobacco) to heat the aerosol-forming substrate, and central insert heating is the insertion of a heat-generating component into the aerosol-forming substrate to heat the aerosol-forming substrate. Among them, the heating element is widely used because of its characteristics such as simple manufacture and convenient use. The existing heating component is mainly formed by adopting ceramic or metal subjected to insulation treatment as a substrate, then printing or coating a resistance heating circuit on the substrate, and fixing the resistance heating circuit on the substrate after high-temperature treatment.

However, since the resistive heating circuit on the conventional heating element is a thin film that is post-printed or plated on the substrate, the resistive heating circuit is easily detached from the substrate and has poor stability when heated at high temperature due to bending deformation of the substrate during use of inserting the heating element into the aerosol-forming substrate many times, and the resistive heating circuit is in contact with only the aerosol-forming substrate on the side of the substrate where the resistive heating circuit is provided and is not in contact with the aerosol-forming substrate on the back of the substrate during heating, resulting in poor heating uniformity of the aerosol-forming substrate.

Disclosure of Invention

The application provides a heating element and aerosol forming device, this heating element can solve the resistance heating circuit on the current heating element and when high temperature generates heat, drops from the basement easily, and stability is relatively poor, and at the in-process that generates heat, the relatively poor problem of heating homogeneity of resistance heating circuit to aerosol formation matrix.

In order to solve the technical problem, the application adopts a technical scheme that: providing a heating assembly, wherein the heating assembly comprises a substrate, at least one heating body, a first electrode and a second electrode; wherein the substrate is for at least partial insertion into an aerosol-forming substrate and has a first end and a second end; at least one heating body is embedded in the substrate, and the heating body is provided with a first connecting end and a second connecting end opposite to the first connecting end; at least one of the first electrode and the second electrode extends from the first end to the second end, one of the first electrode and the second electrode is electrically connected with the first connection end, and the other electrode is electrically connected with the second connection end; wherein at least one heater is for insertion into the aerosol-forming substrate and is powered by the first and second electrodes to generate heat.

In order to solve the above technical problem, another technical solution adopted by the present application is: an aerosol-forming device is provided comprising a housing and a heat generating component and a power supply component disposed within the housing; the power supply assembly is connected with the heating assembly and used for supplying power to the heating assembly, and the heating assembly is the heating assembly.

According to the heating component and the aerosol forming device, the heating component is provided with the substrate and the heating body, so that the aerosol forming substrate is heated through the heating body; meanwhile, the heating element is embedded in the substrate, so that the strength of the heating component can be effectively improved, the heating component can be stressed through the substrate in the process of inserting the heating component into the aerosol-forming substrate, and the problem that the heating element is bent due to stress is effectively avoided; compared with the resistance heating circuit formed on the substrate by silk-screen printing or film coating, the substrate and the heating element can be directly and independently inserted into the aerosol forming substrate, the problem of failure caused by the fact that the heating element falls off from the substrate when the heating element generates heat at high temperature is avoided, and the stability of the heating assembly is greatly improved; in addition, the first electrode and the second electrode are arranged, and at least one of the first electrode and the second electrode extends from the first end part to the second end part of the substrate, so that one of the first electrode and the second electrode is electrically connected with the first connecting end of the heating element, and the other electrode is electrically connected with the second connecting end of the heating element, so that the heating element forms a current loop, the short circuit problem can be avoided, the process is simple, and the strength of the heating assembly is high.

Drawings

Fig. 1a is a schematic structural diagram of a heat generating component according to a first embodiment of the present application;

figure 1b is a schematic illustration of a heat generating component inserted into an aerosol-forming substrate according to an embodiment of the present application;

FIG. 2 is a schematic diagram of the product size of the heat generating component shown in FIG. 1a according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of the product size of the heat-generating component shown in FIG. 1a according to another embodiment of the present application;

FIG. 4a is a side view of a heat-generating component according to a first embodiment of the present application;

FIG. 4b is a side view of a heat-generating component provided in accordance with a second embodiment of the present application;

FIG. 4c is a side view of a heat-generating component according to a third embodiment of the present application;

FIG. 5 is a side view of a heat-generating component according to a fourth embodiment of the present application;

FIG. 6 is a side view of a heat generating component provided in accordance with an embodiment of the present application;

fig. 7 is a schematic structural diagram of a heat generating component according to a second embodiment of the present application;

fig. 8a is a schematic structural diagram of a heat generating component according to a third embodiment of the present application;

FIG. 8b is a side view of a heat-generating component according to a fifth embodiment of the present application;

FIG. 9 is a side view of a heat-generating component according to a sixth embodiment of the present application;

fig. 10 is a schematic structural diagram of a heat generating component according to a fourth embodiment of the present application;

FIG. 11 is a side view of a heat-generating component according to a seventh embodiment of the present application;

fig. 12 is a schematic structural diagram of an aerosol-forming device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. All directional indications (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The present application will be described in detail with reference to the accompanying drawings and examples.

Referring to fig. 1a to fig. 3, in which, fig. 1a is a schematic structural diagram of a heating element according to a first embodiment of the present application; figure 1b is a schematic illustration of a heat generating component inserted into an aerosol-forming substrate according to an embodiment of the present application; FIG. 2 is a schematic diagram of the product size of the heat generating component shown in FIG. 1a according to an embodiment of the present disclosure; FIG. 3 is a schematic diagram of the product size of the heat-generating component shown in FIG. 1a according to another embodiment of the present application; in the present embodiment, a heating element 60 is provided, the heating element 60 being particularly adapted for inserting and heating an aerosol-forming substrate 67, for example, in one embodiment, the heating element 60 is particularly adapted for inserting tobacco for heating the tobacco, as exemplified in the following embodiments; it will be appreciated that in this embodiment, the aerosol-forming substrate 67 may specifically be tobacco; a schematic view of the insertion of the heat generating component 60 into the aerosol-forming substrate 67 may be seen in figure 1 b.

Specifically, referring to fig. 1a, the heating element 60 includes a substrate 61, at least one heating element 62, and a first electrode 63a and a second electrode 63 b. Wherein the substrate 61 is for at least partial insertion into an aerosol-forming substrate 67 and has a first end M and a second end N opposite the first end M; the heating body 62 is used for heating the tobacco after the tobacco is inserted, and the heating body 62 is specifically embedded in the substrate 61, so that the strength of the heating assembly 60 is effectively improved by using the substrate 61, the heating assembly 60 can be stressed through the substrate 61 in the process of inserting the tobacco, and the problem that the heating body 62 is bent or broken due to stress is effectively avoided; simultaneously, compare in current silk screen printing or coating film and the resistance heating circuit that forms on the basement, the base plate 61 and the heat-generating body 62 of this application can directly, independently insert aerosol formation matrix 67, and can not appear through the problem that heat-generating body 62 drops and leads to the inefficacy from base plate 61 when high temperature generates heat, improved heating element 60's reliability greatly. In a specific embodiment, the substrate 61 is inserted into the aerosol-forming substrate 67 at a position corresponding to at least a part of the heat-generating body 62.

Specifically, the heating element 62 has a first connection end E and a second connection end F, at least one of the first electrode 63a and the second electrode 63b extends from the first end M to the second end N, so that one of the first electrode 63a and the second electrode 63b is electrically connected to the first connection end E of the heating element 62, and the other electrode is electrically connected to the second connection end F of the heating element 62, so that the heating element 62 forms a current loop.

In a particular embodiment, at least one of the first electrode 63a and the second electrode 63b extends from the first end M to a position proximate to the second end N. Of course, in other embodiments, the first electrode 63a and the second electrode 63b may be located near the first end portion M or at the middle position of the substrate 61, and may be designed according to the installation position and the serial/parallel connection form of the heating element 62, which is not limited in this embodiment.

Specifically, the substrate 61 may be a rectangular substrate 61, and when the heating element 60 is inserted into the tobacco, the second end N of the substrate 61 is inserted into the tobacco first, so that the second end N of the substrate 61 may be a pointed end, i.e. a triangular structure, and an included angle formed by two adjacent edges of the pointed end is convenient for the heating element 60 to be inserted into the tobaccoα₁In particular, it may be 45 degrees to 90 degrees, for example 60 degrees. Specifically, in this embodiment, the connection between the two sides of the tip and the side of the substrate 61 is a radian, and the radian corresponds to a radius R₁May be 1 to 3 mm, specifically 1 mm.

Specifically, the substrate 61 may be an insulating ceramic substrate, the thermal conductivity of the insulating ceramic substrate may be 4-18W/(m.k), the bending strength may be more than 600MPa, the thermal stability may exceed 450 degrees, and the fire resistance may be higher than 1450 degrees. Of course, in other embodiments, the substrate 61 may also be a metal substrate provided with an insulating coating, such as stainless steel, to improve the strength of the heating element 60, prevent the heating element 60 from bending or breaking, and simultaneously diffuse the heat generated by the heating element 62 to the tobacco contacting the substrate 61, thereby improving the uniformity of heating of the tobacco. The material of the substrate 61 may be a zirconia material in one embodiment, and the zirconia substrate 61 can preserve and transfer heat generated by the heating element 62 to provide energy utilization efficiency of the heating element 60. In other embodiments, the ceramic insulating substrate may be ceramics such as ZTA material (toughened zirconia) and MTA (mullite and alumina composite). In other embodiments, the heating element 62 may be made of a metal alloy or a ceramic alloy made of an iron-silicon-aluminum alloy.

In an embodiment, referring to fig. 2, the substrate 61 may be provided with at least one receiving groove 611 along the length direction thereof, and the heating element 62 is specifically received in the receiving groove 611, so that when the heating element 60 is inserted into the tobacco, the substrate 61 is stressed, thereby preventing the heating element 62 from being directly stressed to cause bending. Specifically, the substrate 61 may be cut by laser according to a preset size to form the receiving groove 611, so that the size precision of the receiving groove 611 is ensured, and distances from the receiving groove 611 to two side edges of the substrate 61 are the same, that is, the receiving groove 611 is disposed in the center along the width direction of the substrate 61. In a specific embodiment, during manufacturing, a glass ceramic material may be coated on the inner side wall of the receiving groove 611 to bond the substrate 61 and the heating element 62 together, and then the insulating ceramic, the glass ceramic and the electrode are sintered together, so that the bonding force between the heating element 62 and the substrate 61 can be effectively improved due to the high viscosity of the glass ceramic, and the use stability is enhanced; specifically, the coating thickness may be specifically 0.05 to 0.1 mm, for example, 0.05 mm.

Specifically, referring to fig. 2, in an embodiment, the substrate 61 may be provided with three receiving grooves 611 disposed at intervals along a length direction thereof, and the interval distance L34 may be specifically 2 to 3 mm, for example, 2.90 mm; specifically, the cross section of the receiving groove 611 may be a strip shape and may be bent or curved, for example, a V-shaped (see fig. 2) or a straight-line-shaped structure (see fig. 8 a); specifically, the heating element 62 formed or disposed therein is also bent or curved corresponding to the shape of the accommodating groove 611, specifically, when the accommodating groove 611 is similar to a V-shaped structure, the heating element is also similar to a V-shaped structure, and when the accommodating groove 611 is a straight-line structure, the heating element is also similar to a straight-line structure, that is, the shape of the heating element 62 matches the shape of the accommodating groove 611; in the embodiment, the V-shaped bottom of the heating element 62 faces the first end M, and the resistance at the bottom is relatively large, which conforms to the design of the heat of the heating element 62 spreading from bottom to top, so that the overall temperature of the heating element 62 is relatively uniform. It is understood that the cross-sectional shape of the containing groove 611 is not limited, and may be designed according to the shape of the heating element 62.

In an embodiment, the dimension of the substrate 61 with the V-shaped accommodating groove 611 is as shown in fig. 2 and 3; specifically, the length L31 of the substrate 61 may be 10 to 15 mm, such as 13.20 mm, and the width W31 may be 4 to 6 mm, such as 5 mm; the length L35 of the V-shaped accommodation groove 611 formed in the substrate 61 may be 3-4 mm, such as 3.00 mm, the corresponding effective length is 4.2 mm, the thickness may be 0.3-0.6 mm, such as 0.5 mm, and the radius R corresponding to the radian formed at the middle of the edge of the inner ring₂Can be 0.5-1 mm, such as 0.75 mm, and the radian formed by the middle part of the edge of the outer ring corresponds to the radius R₃May be 0.5-1 mm, such as 0.75 mm, and has rounded inner wall R₄The radius may be 0.2-0.5 mm, for example 0.25 mm, and the outside radius R may be rounded₅The radius may be 1-2 mm, for example 1 mm, from the bottom of the inner rim edge toThe distance W32 between the bottom of the outer ring edge and the top of the inner ring edge may be 1-2 mm, such as 1.15 mm, the distance W33 between the bottom of the inner ring edge and the top of the inner ring edge may be 0.5-1 mm, such as 0.82 mm, the distance L32 between the bottom of the inner ring edge and the top of the second end N of the base plate 61 may be 3-4 mm, such as 3.94 mm, and the arc α formed by the outer ring edge may be 1-2 mm, such as 1.15 mm₂Can be 45 ° -90 °, e.g., 90 °; the inner concave portion of the V-shaped accommodation groove 611 is defined as an inner ring edge, and the outer convex portion is defined as an outer ring edge.

Specifically, the substrate 61 has a first surface C and a second surface D opposite to the first surface C, the accommodating groove 611 specifically may be a through groove penetrating through the first surface C and the second surface D, the heating element 62 is specifically accommodated in the through groove, and in an embodiment, the heating element 62 has a first heating surface and a second heating surface opposite to the first heating surface, and in an embodiment, the first heating surface and the second heating surface of the heating element 62 accommodated in the accommodating groove 611 are flush with the first surface C and the second surface D of the substrate 61; wherein, through setting storage tank 611 to logical groove structure, can make the heat-generating body 62 of holding in this storage tank 611 expose from one side of the first surface of base plate 61 and one side of second surface respectively, and then make two surfaces of heat-generating body 62 all can with tobacco direct contact after this heat-generating body 62 inserts tobacco, not only energy utilization is high, and the heating is comparatively even, and predetermined temperature field border is clear, especially low pressure starts power instant control and design of being convenient for. It is understood that the receiving groove 611 may be a blind groove or a blind hole.

In other embodiments, the first heating surface and the second heating surface of the heating element 62 may also slightly protrude from the first surface C and the second surface D of the substrate 61 or slightly recess in the first surface C and the second surface D, respectively, according to the actual requirement of the temperature field distribution during heating; thus, when the first heating surface and the second heating surface of the heating element 62 protrude from the first surface C and the second surface D of the substrate 61, the higher temperature of the heating element 62 can be concentrated on the first heating surface and the second heating surface of the heating element 62 and the tobacco contacted with the first heating surface and the second heating surface can be baked at higher temperature, so that the smoke can meet stronger requirements; and when the first heating surface and the second heating surface of the heating element 62 are slightly recessed (i.e., lower than) the first surface C and the second surface D of the substrate 61, the first heating surface and the second heating surface of the heating element 62 are in loose contact with tobacco due to the blocking effect of the substrate 61, so that the baking temperature of the heating element 62 on the tobacco can be slightly reduced, and the requirement of soft smoke can be met.

Among them, the heating element 62 may be specifically one or more; and in one embodiment, the heating element 62 may be a self-supporting structure, i.e., the heating element 62 can exist independently without attaching to other carriers; compared with the existing resistance heating circuit formed by printing or coating on the substrate, the heating element 62 with the self-supporting structure can effectively avoid the problem that the heating element 62 is dropped from the substrate 61 when heated at high temperature or the substrate 61 is deformed, and greatly improves the reliability of the heating component 60; and because this heat-generating body 62 is the self-supporting structure, and can expose from one side of the first surface of base plate 61 and one side of second surface simultaneously, effectively provided heat utilization efficiency and heating homogeneity.

Specifically, the shape of the heating element 62 is not limited and may be designed as needed. In one embodiment, the heating element 62 may be a strip extending along the width direction of the substrate 61 and bent or curved. In an embodiment, a bending part or a bent part is formed in the middle of the strip-shaped heating element 62, and an included angle of the bending part or the bent part may be greater than 45 degrees, for example, may be 90 degrees, 120 degrees or 145 degrees.

Specifically, the material of heat-generating body 62 specifically can be conductive ceramic, compares in current metal material, and this conductive ceramic material's heat-generating body 62 conductive efficiency is higher, and the temperature that generates heat and produce is comparatively even: the heating body 62 made of the conductive ceramics can be adjusted and designed at 3-4 watts, and the conductivity can reach 1 x 10^-4Ohm-1 x 10^-6Ohm, specifically 5 x 10^-5Ohm is suitable for low-voltage start, so that the power is controlled and designed in real time, the bending strength of the conductive ceramic can be more than 40MPa, and the fire resistance can be higher than 1200 ℃; and the heating body 62 made of the conductive ceramics hasThe characteristic of the full-stroke starting voltage.

Specifically, the heating element 62 made of the conductive ceramic is made of a material which can select an electromagnetic heating wavelength as a middle infrared wavelength, so that the tobacco tar can be atomized, and the taste can be improved; in addition, the crystalline phase structure of the heating element 62 made of the conductive ceramic is high-temperature stable oxide ceramic, and the oxide ceramic has good fatigue resistance, high strength and high density, so that the problems of volatilization of harmful heavy metals and dust can be effectively avoided, and the service life of the heating element 62 is greatly prolonged.

The heating element 62 is made of the ceramic whole piece, so that the area of the highest temperature hot spot can be reduced, the risks of fatigue cracking and fatigue resistance increase are eliminated, and the consistency is better; and because of the high strength of the ceramic heating material and the smoothness brought by the microcrystalline structure, the surface of the heating element 62 is easy to clean and not easy to adhere; in addition, the heating element 62 made of ceramic materials is manufactured by adopting a ceramic production process, so that the process is simple and convenient to control, the cost is low, and the popularization of production and the improvement of economic benefits are facilitated.

Specifically, the heating element 62 made of the conductive ceramic specifically includes a main component and a crystal component; the main component is used for conducting electricity and enabling the conductive ceramic to form a certain resistance, and the main component can be one or more of manganese, strontium, lanthanum, tin, antimony, zinc, bismuth, silicon and titanium; the crystal component, i.e., the main material of the ceramic material, is mainly used for forming the shape and structure of the conductive ceramic, and may be one or more of lanthanum manganate, lanthanum strontium manganate, tin oxide, zinc oxide, antimony oxide, bismuth oxide, silicon oxide, and yttrium oxide. In other embodiments, the heating element 62 may be made of a metal alloy or a ceramic alloy in which an sendust alloy and a ceramic are mixed.

Specifically, the conductive ceramic is a material having TCR characteristics, that is, the temperature and the resistance have a corresponding relationship, so that a temperature value can be obtained by detecting the resistance in the use process to control the temperature of the heating element 62.

Wherein, the first electrode 63a and the second electrode 63b can be formed by coating; specifically, in one embodiment, the first electrode 63a and the second electrode 63b are both provided on the substrate 61 and electrically connected to the heating element 62; in one embodiment, the first electrode 63a is directly formed on the surface of the substrate 61, for example, on the first surface 63a or the second surface 63b of the substrate 61; in another embodiment, the substrate 61 is formed with two grooves disposed oppositely, and the first electrode 63a and the second electrode 63b are respectively formed in the two grooves and are respectively electrically connected to the first connection end E and the second connection end F of the heating element 62.

In one embodiment, referring to fig. 4a, fig. 4a is a side view of a heat generating component provided in the first embodiment of the present application; the first electrode 63a and the second electrode 63b include a first portion and a second portion, respectively; wherein a first portion of at least one of the first electrode 63a and the second electrode 63b forms a surface with the substrate, and a second portion forms a surface of the heating element 62; further, a first groove is formed in the substrate 61 at a position corresponding to the first portion of the electrode, and the first portion of the electrode is disposed in the first groove; the heating element 62 is provided with a second groove at a position corresponding to the second part of the electrode, and the second part of the electrode is disposed in the second groove. And in a specific embodiment, the thickness of the first portion of the electrode is the same as the depth of the first groove, and the thickness of the second portion of the electrode is the same as the thickness of the second groove.

Further, in one embodiment, referring to fig. 4b, fig. 4b is a side view of a heat generating component provided in a second embodiment of the present application; specifically, the first electrode 63a and the second electrode 63b further include a third portion, and the third portion of at least one of the first electrode 63a and the second electrode 63b extends to the side surface of the heating element 62 which is in contact with the substrate 61.

In another embodiment, one of the first electrode 63a and the second electrode 63b is provided on the substrate 61, and the other electrode is provided on the heating element 62; and the electrode provided on the heating element 62 may be directly formed on the surface of the heating element 62 or provided in a groove of the heating element 62 and electrically connected to the heating element 62. Specifically, the first electrode 63a and the second electrode 63b can be formed on the substrate 61 and/or the heating element 62 by coating, and the first electrode 63a and the second electrode 63b can be formed on the substrate 61 and the heating element 62 by coatingAnd/or a bonding force between the heating elements 62, thereby improving connection stability between the electrode leads 66 connected to the first and

second electrodes

63a and 63b and the heating elements 62; it is understood that the ceramic has a micro-porous structure, and the micro-porous structure of the ceramic enables the bonding force between the first and

second electrodes

63a and 63b and the substrate 61 and/or the heating body 62 to be formed to be strong even though the coating thickness is large, thereby greatly improving the bonding force between the first and

second electrodes

63a and 63b and the substrate 61 and/or the heating body 62. Specifically, the coating material may be silver paste. It will be appreciated that the first electrode 63a and the second electrode 63b may also be formed by depositing a metal film, for example gold, platinum, copper or the like in a range of more than 1 x 10^-6An ohmic metallic material; the length of the coating may be 5-8 mm, for example 6.5 mm, and the thickness of the silver coating may be 0.05-0.1 mm, for example 0.06 mm.

In the present embodiment, the first electrode 63a and the second electrode 63b are provided on the substrate 61 as an example; specifically, the first electrode 63a and the second electrode 63b are disposed on the same surface of the substrate 61, for example, on the first surface C or the second surface D of the substrate 61; in other embodiments, the first electrode 63a and the second electrode 63b may also be disposed on two surfaces, for example, the first electrode 63a is disposed on the first surface C, and the second electrode 63b is disposed on the second surface D, which may be selected according to the requirement of the actual lead space. Of course, in other embodiments, the first electrode 63a and the second electrode 63b may be disposed on both surfaces of the substrate 61 at the same time, that is, the number of the first electrode 63a and the second electrode 63b is two; thus, the conductive component of the conductive ceramic close to the two surfaces of the conductive ceramic can have a shorter current path, so that the temperature fields of the two surfaces of the heating body 62 are more uniform; simultaneously, not only make things convenient for the welding, and can increase as far as possible with the area of contact of conductive ceramic's heat-generating body 62 in order to reduce contact resistance to produce less heat when heat-generating body 62 circular telegram, reduce the temperature, and circular telegram simultaneously at two surfaces of conductive ceramic's heat-generating body 62, two surfaces form the same electric potential, are favorable to making the electrically conductive composition electric field between two surfaces even, and the effect of generating heat is better.

In one embodiment, there are at least two heating elements 62, and at least two heating elements 62 are arranged in parallel between the first electrode 63a and the second electrode 63 b; because at least two heating elements 62 in this embodiment are in parallel, the size of each heating element 62 can be made smaller, so that it is not necessary to additionally provide a support boss 65 (see fig. 4c below) in the containing groove 611 of the substrate 61 to support each heating element 62, and a better bonding force can be provided between the heating elements 62 and the substrate 61; meanwhile, the whole heating body 62 can be made to be small in size, so that electric energy is saved, and the heating body is easy to process. Specifically, a first electrode 63a and a second electrode 63b are arranged in parallel and at intervals and both extend from a first end M to a second end N of the substrate 61, three heating elements 62 are arranged in parallel and at intervals along the length direction of the substrate 61 between the first electrode 63a and the second electrode 63b, and one end of each heating element 62 is electrically connected with the first electrode 63a and the other end is electrically connected with the second electrode 63 b. In a specific embodiment, portions of the first electrode 63a and the second electrode 63b may be coated on the surface of the end portion of the heating element 62 to achieve electrical connection of the heating element 62 with the first electrode 63a and the second electrode 63 b.

Of course, in other embodiments, see fig. 4c and 5, where fig. 4c is a side view of a heat generating component provided in a third embodiment of the present application; FIG. 5 is a side view of a heat-generating component according to a fourth embodiment of the present application; a support boss 65 may be disposed on the inner wall surface of the accommodating groove 611 at a position close to the second surface of the substrate 61, and the heating element 62 is specifically overlapped on the surface of the support boss 65 away from the second surface of the substrate 61; specifically, in this embodiment, the thickness of the heating element 62 may be smaller than that of the substrate 61, and one side surface of the heating element 62 is flush with the first surface C of the substrate 61, and the other side surface is lower than the second surface D, and the specific structure can be seen in fig. 4C; of course, the thickness of the heating element 62 may also be the same as the thickness of the substrate 61, and two opposite surfaces of the heating element 62 are flush with the first surface C and the second surface D of the substrate 61, respectively, and meanwhile, a position-giving portion is provided at a position where the heating element 62 corresponds to the supporting boss 65, so that the heating element 62 is lapped on the supporting boss 65, and further the heating element 62 is prevented from falling from the accommodating groove 611 of the substrate 61, and the specific structure can be seen in fig. 5.

Specifically, referring to fig. 1a to 3, three heating elements 62 may be provided, the three heating elements 62 are arranged at intervals along the length direction of the substrate 61, and the interval distance L34 may be 2-3 mm, for example, 2.90 mm; the first connection end E and the second connection end F of the heating element 62 are oppositely arranged along the width direction of the substrate 61; specifically, the three heating elements 62 are specifically accommodated in the accommodating groove 611 of the substrate 61 shown in fig. 2 or fig. 3, and the corresponding structure and size are the same as those of the accommodating groove 611 shown in fig. 2 and fig. 3, which can be referred to the above text. In the present embodiment, the substrate 61 is inserted with the aerosol-forming substrate 67 at least at a position corresponding to the heating element 62.

Specifically, in this embodiment, the first electrode 63a and the second electrode 63b are both provided on the substrate 61, and both extend from the first end portion M of the substrate 61 to a position near the second end portion N; specifically, the first electrode 63a and the second electrode 63b are located at opposite sides of the heating elements 62, and the first connection end E and the second connection end F of each heating element 62 extend toward both sides of the substrate 61 to be connected to the first electrode 63a and the second electrode 63b, respectively, thereby forming a current loop while allowing the heating elements 62 to be arranged in parallel. Specifically, the silver electrode coating may have a thickness of 0.05 to 0.1 mm, for example, 0.06 mm.

In a specific embodiment, referring to fig. 6, fig. 6 is a side view of a heat generating component provided in an embodiment of the present application. A protective layer 64 is further coated on at least one surface of the substrate 61, the protective layer 64 covering the heating element 62 and the first and

second electrodes

63a and 63b to prevent soot formed when tobacco is heated from damaging the first and

second electrodes

63a and 63b and the heating element 62; further, the protective layer 64 may cover the entire substrate 61, so that the entire heat generating component 60 has a smooth surface. The protective layer 64 may be a glass glaze layer.

The heating element 60 provided in this embodiment is provided with a substrate 61 and a heating element 62, so that tobacco is heated by the heating element 62; meanwhile, the heating element 62 is embedded in the substrate 61, so that the strength of the heating component 60 can be effectively improved, the heating component 60 can be stressed through the substrate 61 in the process of inserting tobacco, and the problem that the heating element 62 is bent or broken due to stress is effectively solved; compared with the existing resistance heating circuit with silk screen printing or film coating on the substrate, the substrate 61 and the heating element 62 can be directly and independently inserted into the aerosol formation substrate 67, the problem that the heating element 62 falls off from the substrate 61 to cause failure when the substrate 61 is heated at high temperature or deformed is avoided, and the reliability of the heating component 60 is greatly improved; in addition, the heating element 62 forms a current loop by providing the first electrode 63a and the second electrode 63b, and extending at least one of the first electrode 63a and the second electrode 63b from the first end M to the second end N of the substrate 61 so that one of the first electrode 63a and the second electrode 63b is electrically connected to the first connection end E of the heating element 62 and the other electrode is electrically connected to the second connection end F of the heating element 62; in addition, by providing the protective layer 64, it is possible to effectively prevent the first electrode 63a, the second electrode 63b, and the heating element 62 from being damaged by smoke generated when tobacco is heated.

In another embodiment, referring to fig. 7, fig. 7 is a schematic structural diagram of a heat generating component according to a second embodiment of the present application; a heating element 60 is provided, which is different from the heating element 60 provided in the first embodiment described above in that three heating elements 62 are connected in series to form a heating element, and only one of the first electrode 63a and the second electrode 63b extends from the first end M of the substrate 61 to a position where the substrate 61 is close to the second end N. In one embodiment, the first electrode 63a may extend from the first end M of the substrate 61 to a position where the substrate 61 is close to the second end N, and the second electrode 63b is disposed at the first end M of the substrate 61 (see fig. 7), for example, in the following embodiments; of course, the second electrode 63b may extend from the first end M of the substrate 61 to a position where the substrate 61 is close to the second end N, and the first electrode 63a may be disposed at the first end M of the substrate 61.

Specifically, referring to fig. 7, in this embodiment, the number of the heating elements 62 may be specifically three, and the second connection end F of one heating element 62 and the first connection end E of another heating element 62 in every two adjacent heating elements 62 are connected to form an integral bending type heating element; one end of the heating element is connected to the first electrode 63a, and the other end is connected to the second electrode 63b to form a whole current loop. Of course, in other embodiments, the first electrode 63a and the second electrode 63b may extend to a position close to the second end N of the substrate 61, and this embodiment is not limited thereto as long as one end of the heating element is connected to the first electrode 63a and the other end is connected to the second electrode 63 b.

Compared with the heating assembly 60 provided by the first embodiment, the heating assembly 60 provided by the embodiment can effectively improve the strength of the heating assembly 60, so that the heating assembly 60 can be stressed through the substrate 61 in the process of inserting tobacco, and the problem that the heating body 62 is bent due to stress is effectively avoided; meanwhile, the second electrode 63b does not need to extend to the position of the substrate 61 close to the second end portion N, the process is simpler, the cost is lower, and at least two heating elements 62 are connected into a whole heating element to be connected with the first electrode 63a and the second electrode 63b, so that the problem that a part of the heating elements 62 is in poor contact with the first electrode 63a and/or the second electrode 63b to cause failure can be avoided.

In another embodiment, referring to fig. 8a, fig. 8a is a schematic structural diagram of a heat generating component according to a third embodiment of the present application; the difference from the heating element assembly 60 provided in the first and second embodiments described above is that the heating element 62 extends along the longitudinal direction of the substrate 61. Specifically, one of the first electrode 63a and the second electrode 63b is provided on the substrate 61 and extends from the first end M to a position close to the second end N, and is electrically connected to the second connection end F of the heating body 62, and the other electrode is provided at the first connection end E of the heating body 62.

Specifically, in this embodiment, the heating element 62 extends from the first end M of the substrate 61 to a position close to the second end N, and may be in a strip shape, and a portion of the heating element 62 close to the first end M is formed as the first connection end E of the heating element 62, and a portion of the heating element 62 close to the second end N is formed as the second connection end F of the heating element 62. In a specific embodiment, the first electrode 63a of the first electrode 63a and the second electrode 63b extends from the first end portion M of the substrate 61 to a position of the second end portion N of the substrate 61 to be electrically connected to the second connection end F of the heating body 62, and the second electrode 63b is disposed at the first connection end E of the heating body 62. In one embodiment, referring to fig. 8b, fig. 8b is a side view of a heat generating component provided in a fifth embodiment of the present application; the heating element 62 is positioned lower than the surface of the substrate 61 corresponding to the second electrode 63b to form a recess, and the second electrode 63b is specifically formed in the recess.

Specifically, in one embodiment, referring to fig. 8a, the first electrode 63a may specifically include a vertically disposed first electrode portion 63a₁And a second electrode portion 63a₂Wherein the first electrode portion 63a₁A second electrode part 63a disposed on one side surface of the substrate 61 connected to the first surface C and extending from the first end part M of the substrate 61 to a position near the second end part N₂And the first electrode portion 63a₁One end close to the second end N is electrically connected and disposed on the first surface C of the substrate 61 and close to the second end N to be electrically connected to the second connection terminal F.

Specifically, in this embodiment, the heating element 62 includes a first heating area a and a second heating area B connected to the first heating area a, wherein the first heating area a is a main atomization area into which tobacco is inserted for heating, the atomization temperature of the first heating area a is concentrated at 280 ℃ to 350 ℃ and occupies more than 75% of the area of the atomization area, and the second heating area B is a main matching section of the heating element 62, and the temperature is below 150 ℃; in one embodiment, the second electrode 63B is provided specifically in the second heat generation region B of the heat generating body 62 to lower the atomization temperature of the heat generating body 62 made of ceramics; specifically, the ratio of the heat generation temperature of the first heat generation region a to the heat generation temperature of the second heat generation region B of the heat generation body 62 is greater than 2.

In a specific embodiment, the resistivity of the material of the part of the heating element 62 located in the second heat generation region B is smaller than the resistivity of the material of the part of the heating element 62 located in the first heat generation region a, so that the temperature of the first heat generation region a of the heating element 62 is higher than the temperature of the second heat generation region B; meanwhile, materials with different resistivities are arranged in different heating areas, so that the temperatures of the different heating areas are regulated and controlled through resistivity differences; specifically, the ceramic material main body components of the part of the heating element 62 located in the first heating area a and the part of the heating element 62 located in the second heating area B are basically the same and are integrally molded, but the proportion of the ceramic material of the part of the heating element 62 located in the first heating area a and the proportion of the ceramic material of the part of the heating element 62 located in the second heating area B are different or other components are different, so that the resistivity of the part of the heating element 62 located in the first heating area a is different from that of the part of the heating element 62 located in the second heating area B. Compared with the prior art, the scheme that the first heating area A and the second heating area B are made of different conductive materials, such as an aluminum film and a gold film, and the two different conductive materials are spliced can effectively avoid the problem that the conductors of the first heating area A and the second heating area B of the heating body 62 are broken.

In this embodiment, referring to fig. 9, fig. 9 is a side view of a heat generating component provided in a sixth embodiment of the present application; in order to ensure the bonding force between the heating element 62 and the substrate 61 and prevent the heating element 62 from falling from the containing groove 611 of the substrate 61, a supporting boss 65 having a thickness smaller than that of the heating element 62 in the thickness direction of the heating element 62 may be provided on the inner side wall of the containing groove 611 close to the second surface D of the substrate 61 to support the heating element 62, and the specific structure can be seen in fig. 9. Specifically, in an embodiment, the thickness H of the heating element 62 may be specifically 0.4 to 0.5 mm, for example, 0.4 mm; the resistance can be 0.3-1 ohm, 0.6 ohm, and the resistivity can be 1 x 10^-4-3*10^-4Ohm, e.g. 2 x 10^-4Ohm; the power used may be 1 watt to 3 watts, and may specifically be 2.5 watts.

Specifically, in the present embodiment, the aerosol-forming substrate 67 is inserted into at least a part or all of the substrate 61 corresponding to the first heat-generating region a of the heat-generating body 62; of course, in other embodiments, the aerosol-forming substrate 67 may also be inserted into a portion of the substrate 61 corresponding to the second heat-generating region B of the heat-generating body 62.

In the heating element 60 of the present embodiment, compared with the heating element 60 of the second embodiment, the first electrode 63a is extended to a position of the substrate 61 near the second end N to be electrically connected to the second connection terminal F of the heating element 62; the second electrode 63b is directly arranged on the first connection end E of the heating body 62 to ensure the effective connection of the two, and the first connection end E and the second connection end E of the heating body 62 are connectedA current loop is formed between the connecting ends F; wherein the first electrode portion 63a of the second electrode 63b is formed by₁Is disposed on one side surface of the substrate 61 to prevent the first electrode portion 63a₁The utilization rate of the surface of the substrate 61 is effectively improved while the short circuit problem with the heating element 62 occurs.

In another embodiment, referring to fig. 10, fig. 10 is a schematic structural diagram of a heat generating component according to a fourth embodiment of the present application; unlike the third embodiment described above, the first electrode portion 63a₁A second electrode part 63a disposed entirely on the first surface C of the substrate 61 and adjacent to the second end N of the substrate 61₂Electrically connected to the second connection terminal F of the heating element 62; specifically, in this embodiment, the second electrode 63b is also provided at the first connection end E of the heating element 62.

In the heating element 60 of the present embodiment, the first electrode portion 63a is formed to be smaller than that of the heating element 60 of the third embodiment₁The first electrode 63a is provided on the first surface C of the substrate 61, and the first electrode portion 63a can be secured not only to ensure that the first electrode 63a and the second electrode 63b communicate with each other with the heating element 62 but also to ensure that the heating element is connected to each other₁The short circuit problem will not occur with the heating element 62, and the tobacco tar formed during heating tobacco can be prevented from permeating into the first electrode part 63a under the action of gravity₁The gap between the substrate 61 and the side surface of the substrate, so that the bonding force between the substrate and the substrate is influenced; and the second electrode portion 63a is effectively secured₂Bonding strength with the substrate 61; in addition, this can further reduce the volume of the heat generating component 60.

Specifically, in this embodiment, referring to fig. 11, fig. 11 is a side view of a heat generating component according to a seventh embodiment of the present application; in order to ensure the bonding force between the heating element 62 and the substrate 61 and prevent the heating element 62 from falling from the containing groove 611 of the substrate 61, a supporting boss 65 may be provided on the inner wall surface of the containing groove 611 of the heating element 62 to support the heating element 62, and the specific structure can be seen in fig. 11; in particular embodiments, the support bosses 65 may be integrally formed with the base plate 61 to provide support strength.

Referring to fig. 12, fig. 12 is a schematic structural diagram of an electronic atomization device according to an embodiment of the present disclosure; in this embodiment, an aerosol-forming device 600 is provided, the aerosol-forming device 600 comprising a housing 601 and a heat generating component 60, a mounting 70 and a power supply component 80 arranged within the housing 601.

The heating element 60 may be the heating element 60 provided in any of the above embodiments, and the specific structure and function thereof may be described in the above related text, which is not described herein again; specifically, the heating element 60 is disposed on the mounting seat 70, and is fixedly mounted on the inner wall surface of the housing 601 through the mounting seat 70; the power supply module 80 is connected to the heating module 60, and supplies power to the heating module 60; and in one embodiment, the power supply assembly 80 may be embodied as a rechargeable lithium ion battery.

Specifically, the specific structure of the heat generating component 60 mounted on the mounting seat 70 can be seen in fig. 1a, 7 and 8 a; specifically, referring to fig. 1a, the mounting seat 70 includes a mounting body 71 and a mounting hole 72, and the heat generating component 60 is specifically inserted into the mounting hole 72 of the mounting seat 70 to be fixed with the mounting seat 70; the portion of the substrate 61 where the heating element 62 is not provided is inserted into the mounting hole 72 of the mounting base 70.

Specifically, when the heat generating component 60 has the structure shown in fig. 8a, the second heat generating region B of the heat generating component 60 is inserted into the mounting hole 72 of the mounting seat 70 to be fixed with the mounting seat 70; and after the tobacco is inserted, the end of the tobacco abuts the upper surface of the mounting seat 70. Specifically, an avoiding groove is provided on a side wall of the mounting hole 72, and the electrode lead 66 specifically extends into the mounting seat 70 through the avoiding groove to be connected with the first electrode 63a and the second electrode 63 b. Further, referring to fig. 8a, at least two clamping portions 73 are further disposed on the mounting main body 71, and the mounting base 70 is fixed to the housing 601 of the aerosol-forming device 600 through the clamping portions 73.

Further, referring to fig. 8a, one side of the mounting body 71 may further be provided with an extending groove 74 communicating with the mounting hole 72, the extending groove 74 may be specifically provided on a side surface facing away from the second end portion N of the substrate 61, and the extending groove 74 is consistent with a shape of a portion of the heat generating component 60 for being inserted into the mounting seat 70, for example, if a shape of a portion of the heat generating component 60 for being inserted into the mounting seat 70 is a rectangle, a shape of the extending groove 74 is also a rectangle, and the extending groove 74 is matched with a size of a portion of the heat generating component 60 for being inserted into the mounting seat 70, so as to reinforce the portion of the heat generating component 60 inserted into the mounting seat 70 through the extending groove 74 to prevent breakage thereof. In one embodiment, two extension slots 74 are provided on the mounting block 70, and the two extension slots 74 are perpendicularly crossed.

Specifically, the material of the mounting seat 70 may be an organic or inorganic material having a melting point higher than 160 degrees, for example, PEEK material; the mounting seat 70 may be bonded to the heat generating component 60 by an adhesive, which may be a high temperature resistant glue.

In the aerosol-forming device 600 according to the present embodiment, the heating element 60 is provided, and the heating element 60 is provided with the substrate 61 and the heating element 62 to heat the tobacco by the heating element 62; meanwhile, the heating element 62 is embedded in the substrate 61, so that the strength of the heating component 60 can be effectively improved, the heating component 60 can be stressed through the substrate 61 in the process of inserting tobacco, and the problem that the heating element 62 is bent due to stress is effectively avoided; compared with the resistance heating circuit formed on the substrate by silk-screen printing or film coating, the substrate 61 and the heating element 62 can be directly and independently inserted into the aerosol formation substrate 67, the problem that the heating element 62 falls off from the substrate 61 to cause failure when heating at high temperature is avoided, and the reliability of the heating component 60 is greatly improved; in addition, the first electrode 63a and the second electrode 63b are provided, and at least one of the first electrode 63a and the second electrode 63b extends from the first end M to the second end N of the substrate 61, so that one of the first electrode 63a and the second electrode 63b is electrically connected to the first connection end E of the heating element 62, and the other electrode is electrically connected to the second connection end F of the heating element 62, so that the heating element 62 forms a current loop, which not only can avoid the short circuit problem, but also has a simple process and high strength of the heating element 60.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A heat generating component, comprising:

a substrate for at least partial insertion into an aerosol-forming substrate, the substrate having a first end and a second end;

the heating body is embedded in the substrate and is provided with a first connecting end and a second connecting end opposite to the first connecting end;

a first electrode and a second electrode, at least one of which extends from the first end portion to the second end portion, and one of which is electrically connected to the first connection terminal and the other of which is electrically connected to the second connection terminal; wherein the at least one heating element is for insertion into the aerosol-forming substrate and is powered by the first and second electrodes to generate heat.

2. The heat generating component as claimed in claim 1, wherein at least one of the first electrode and the second electrode is formed on a surface of the substrate and electrically connected to the heat generating body.

3. The heat generating component according to claim 2, wherein the first electrode and the second electrode include a first portion and a second portion, respectively, wherein the first portion of at least one of the first electrode and the second electrode is formed on the surface of the substrate, and the second portion is formed on the surface of the heat generating body.

4. The heating element as claimed in claim 2, wherein the substrate is provided with a first groove corresponding to the first portion of the electrode, and the first portion of the electrode is disposed in the first groove; and a second groove is formed in the position, corresponding to the second part of the electrode, of the heating body, and the second part of the electrode is arranged in the second groove.

5. The heating assembly of claim 4 wherein the thickness of the first portion of the electrode is the same as the depth of the first groove; the thickness of the second portion of the electrode is the same as the depth of the second groove.

6. The heat generating component according to claim 3, wherein the first electrode and the second electrode further comprise a third portion, and the third portion of at least one of the first electrode and the second electrode extends to a side surface of the heat generating body abutting against the substrate.

7. The heat-generating assembly of claim 1, wherein at least one of the first electrode and the second electrode extends from the first end to a location proximate the second end.

8. The heating element as claimed in claim 7, wherein the substrate is an insulating ceramic and a receiving groove is disposed on the substrate; the heating body is conductive ceramic and is embedded in the accommodating groove.

9. The heat generating component as claimed in claim 8, wherein the receiving groove is a through groove penetrating the substrate, so that the heat generating body is exposed from two opposite surfaces of the substrate.

10. The heat-generating assembly of claim 7, wherein the first electrode and the second electrode each extend from a first end of the substrate to a location proximate to the second end; the heating elements are at least two, the at least two heating elements are arranged at intervals along the length direction of the substrate, and the at least two heating elements are arranged between the first electrode and the second electrode in parallel.

11. The heat generating component as claimed in claim 10, wherein the heat generating body is in a strip shape and is bent or curved.

12. The heating assembly of claim 7 wherein only one of the first electrode and the second electrode extends from the first end of the substrate to a position proximate the second end; the number of the heating bodies is at least two, and the at least two heating bodies are arranged between the first electrode and the second electrode in series.

13. The heating assembly of claim 7 wherein only said first electrode of said first and second electrodes extends from a first end of said substrate to a location proximate to said second end; the heating element extends from the first end portion of the substrate to a position close to the second end portion.

14. The heater assembly of claim 13, wherein the first electrode includes a first electrode portion and a second electrode portion disposed vertically; the first electrode part is arranged on one side surface of the substrate connected with the first surface and extends from the first end part of the substrate to a position close to the second end part; the second electrode part is electrically connected with one end, close to the second end, of the first electrode part, and is arranged on the first surface of the substrate and at a position close to the second end so as to be electrically connected with the second connecting end; the second electrode is arranged on the first connecting end of the heating body and is electrically connected with the first connecting end.

15. The heating element according to claim 14, wherein the second electrode is entirely provided on the heating element, and a position of the heating element corresponding to the second electrode is lower than a surface of the substrate to form a groove in which the second electrode is formed.

16. The heating assembly as claimed in claim 15, wherein the heating element comprises a first heating region and a second heating region connected to the first heating region, the first electrode is disposed in the second heating region of the heating element, and the second electrode portion is electrically connected to the second connection terminal of the first heating region of the heating element; the ratio of the heating temperature of the first heating area to the heating temperature of the second heating area is more than 2.

17. The heat generating component according to claim 1, further comprising a protective layer that is coated on the surface of the substrate and covers the heat generating body, the first electrode, and the second electrode.

18. The heat generating component according to claim 1, wherein the heat generating body includes a main component and a crystal component; the main component is one or more of manganese, strontium, lanthanum, tin, antimony, zinc, bismuth, silicon and titanium, and the crystal component is one or more of lanthanum manganate, lanthanum strontium manganate, tin oxide, zinc oxide, antimony oxide, bismuth oxide, silicon oxide and yttrium oxide.

19. The heat generating component of claim 1, wherein said heat generating body has a first heating surface and a second heating surface opposite to said first heating surface; the first heating surface is flush with the first surface of the substrate, or is recessed or protruded from the first surface of the substrate; the second heating surface is flush with the second surface of the substrate, or is recessed or protruded from the second surface of the substrate.

20. An aerosol-forming device, comprising: the heating module and the power supply module are arranged in the shell; wherein the power supply component is connected to the heat generating component for supplying power to the heat generating component, and the heat generating component is the heat generating component according to any one of claims 1 to 19.