CN119837303A - Heating element, method for producing a heating element and aerosol-generating device - Google Patents

Abstract

The embodiment of the application provides a heating element, a preparation method of the heating element and an aerosol generating device, which relate to the technical field of electronic components, wherein the heating element comprises a substrate tube, at least one heating element, at least one temperature measuring element and at least one packaging element, the heating element is covered in a first preset area on the outer wall of the substrate tube, the temperature measuring element is covered in a second preset area on the outer wall of the substrate tube, and the packaging element is covered on part of the heating element and part of the temperature measuring element. The heating element is used for being connected with a power supply, and the temperature measuring element is used for being connected with the controller. According to the heating element provided by the embodiment of the application, the heating element, the temperature measuring element and the packaging element are integrated on the substrate tube to form the highly integrated element, so that the design requirement of the small-volume portable heater or atomizer can be met.

Description

Heating element, method for producing a heating element and aerosol-generating device

Technical Field

The application relates to the technical field of electronic components, in particular to a heating element, a preparation method of the heating element and an aerosol generating device.

Background

At present, a heating component is needed on consumer electronic devices such as portable heaters and atomizers. In addition, in order to have a smaller size and more excellent portability, the heating member is being developed in a small size, a thin thickness, and the like.

In the related art, the conventional portable heater can realize a basic heating function without a temperature monitoring function, and a temperature detection component is additionally arranged on the conventional heater to realize temperature control.

However, the integration level of the heating component is not high enough, and the design requirement of the small-volume portable heater or atomizer cannot be met.

Disclosure of Invention

Based on the above, the application provides a heating element, a preparation method of the heating element and an aerosol generating device, which at least solve the problems that the integration level of a heating component on the conventional portable heater is not high enough and the design requirement of a small-volume portable heater or atomizer cannot be met.

In a first aspect, the present application provides a heating element comprising a substrate tube, at least one heating element, at least one temperature measuring element, and at least one encapsulation;

The heating piece is covered on a first preset area on the outer wall of the substrate tube;

The temperature measuring piece is covered in a second preset area on the outer wall of the substrate tube;

The packaging part is covered on part of the heating part and part of the temperature measuring part;

the heating element is used for being connected with a power supply, and the temperature measuring element is used for being connected with the controller.

In one possible implementation, the heating element is a metal layer or a metal oxide layer or an alloy layer or a non-metal oxide layer.

In one possible implementation, the ratio of the area of the heating element covering the substrate tube to the total area of the periphery of the substrate tube is greater than or equal to 60%.

In one possible implementation, the temperature measuring member includes a temperature measuring portion and a conductive portion, the temperature measuring portion is close to the heating member, and the temperature measuring portion is close to the heating member and is surrounded by the heating member;

The conductive part is connected with the temperature measuring part and is used for being connected with the controller.

In one possible implementation, at least a first electrode and a second electrode are provided in the package, the first electrode being connected to the heating element and being adapted to be connected to the power supply;

the second electrode is connected to the conductive part and is used for being connected with the controller.

In one possible implementation, the temperature measuring part is a metal layer or a metal oxide layer.

In one possible implementation, the temperature measuring part is curved.

In one possible implementation, the heating element and the temperature measuring element both extend to the end of the substrate tube, and the encapsulation is disposed at the end of the substrate tube and covers a portion of the heating element and a portion of the temperature measuring element.

In one possible implementation, the device further comprises a protection piece, and the protection piece is at least arranged on the heating piece and the temperature measuring piece.

In one possible implementation, the protective element is a quartz glass layer or a ceramic layer or a non-metal oxide layer.

In a second aspect, the present application also provides a method of preparing a heating element, comprising:

Providing a substrate tube;

Forming a heating element in a first preset area on the outer wall of the substrate tube;

forming a temperature measuring piece in a second preset area on the outer wall of the substrate tube;

And packaging part of the heating element and part of the temperature measuring element to form a packaging element.

In one possible implementation, forming the heating element in the first predetermined area on the outer wall of the substrate tube includes:

the heating element is formed in a first predetermined pattern by a deposition process.

In one possible implementation, forming the temperature measurement member at the second predetermined area on the outer wall of the substrate tube includes:

And forming the temperature measuring piece according to a second preset pattern through a deposition process.

In one possible implementation, the method further includes:

And forming a protective piece at least on the heating piece and the temperature measuring piece.

In one possible implementation, forming the protective member on at least the heating member and the temperature measuring member includes:

The protector is formed by a passivation process.

In a third aspect, the present application also provides an aerosol-generating device comprising a device body and a heating element disposed on the device body, the heating element being any one of the heating elements provided in the first aspect;

or the heating element is obtained by a method of manufacturing any one of the heating elements provided in the second aspect.

The heating element comprises a substrate tube, at least one heating element, at least one temperature measuring element and at least one packaging element, wherein a heating cavity is arranged in the substrate tube and can be used for placing aerosol generating products and the like, the heating element is covered on a first preset area on the outer wall of the substrate tube and is used for heating, the temperature measuring element is covered on a second preset area on the outer wall of the substrate tube and is used for detecting the temperature of the substrate tube, the packaging element is covered on part of the heating element and part of the temperature measuring element, the heating element is used for being connected with a power supply to supply power to the heating element, and the temperature measuring element is used for being connected with a controller to convert a measurement signal on the temperature measuring element into temperature information through the controller. Therefore, the heating element provided by the application forms a highly integrated element by integrating the heating element, the temperature measuring element and the packaging element on the substrate tube, has smaller size, can meet the design requirement of the small-volume portable heater or atomizer, and is more convenient.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of a heating element according to an embodiment of the present application;

FIG. 2 is a schematic view of the main section of FIG. 1;

Fig. 3 is a flowchart of a method for manufacturing a heating element according to an embodiment of the present application.

Reference numerals:

100 parts of substrate tube, 101 parts of heating cavity;

200, heating element;

300 parts of temperature measuring piece, 310 parts of temperature measuring part, 320 parts of conductive part;

400 package, 410 first electrode, 420 second electrode;

500 parts of protection piece.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of methods and apparatus consistent with aspects of the application as detailed in the accompanying claims.

The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

As to the background art, in some heating devices, the heating resistor is first disposed on the substrate, and then the temperature sensor is disposed on the heating resistor, which increases design and manufacturing costs, and has complex process, and in the actual use process, there is additional contact thermal resistance between the temperature sensor and the internal heating body, which increases instability for temperature control. Other heating devices fix temperature sensors at specific positions, and measure the temperature of the fixed positions in the form of temperature probes, and the temperature sensor data are connected to the PCB board of the controller through additional conductive lines. The separation of the heating and temperature monitoring structures greatly increases the complexity of the device and the additional dimensional requirements and reduces the accuracy of the temperature measurement.

The present application is directed to a heating element, a method for manufacturing a heating element, and an aerosol-generating device. The heating element comprises a substrate tube, at least one heating element, at least one temperature measuring element and at least one packaging element, wherein a heating cavity is arranged in the substrate tube and can be used for placing aerosol generating products and the like, the heating element is covered on a first preset area on the outer wall of the substrate tube and is used for heating, the temperature measuring element is covered on a second preset area on the outer wall of the substrate tube and is used for detecting the temperature of the substrate tube, the packaging element is covered on part of the heating element and part of the temperature measuring element, the heating element is used for being connected with a power supply to supply power for the heating element, the temperature measuring element is used for being connected with a controller, so that a measuring signal on the temperature measuring element is converted into temperature information through the controller, namely, the heating element, the temperature measuring element and the packaging element are integrated on the substrate tube to form a high-integration element, the high-integration element has smaller size, and can meet the design requirements of a small-volume portable heater or atomizer, and is more convenient.

The technical scheme of the application is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.

Referring to fig. 1-2, a heating element is provided according to an embodiment of the present application, which includes a substrate tube 100, at least one heating element 200, at least one temperature measuring element 300, and at least one package 400.

The heating member 200 covers a first predetermined area on the outer wall of the substrate tube 100.

The temperature measuring member 300 is disposed on a second predetermined area of the outer wall of the substrate tube 100.

The package 400 is coated on a portion of the heating member 200 and a portion of the temperature measuring member 300.

Wherein, heating element 200 is used for being connected with the power, and temperature measurement element 300 is used for being connected with the controller.

The heating element in the embodiment can be used for equipment such as a portable heater, an atomizer and the like, such as an aerosol generating device, and can meet the requirements of small volume, small size and the like.

The base pipe 100 in this embodiment may be made of quartz glass or ceramic or the like, and may be made into a cylindrical pipe, a prismatic pipe, or the like according to the shape of the object to be heated. The substrate tube 100 has a heating chamber 101 therein, and the inner wall of the heating chamber 101 is in contact with the object to be heated.

The heating element 200 in this embodiment may be a heating resistor or the like, which covers a first predetermined area on the outer wall of the substrate tube 100, that is, a partial area of the outer wall of the substrate tube 100 where the heating element 200 covers.

As shown in fig. 1, the heating element 200 may include a first heating section, a second heating section and a third heating section, where the first heating section and the third heating section are disposed on two sides of the outer wall of the substrate tube 100, the second heating section is connected to the same side ends of the first heating section and the third heating section, a reserved area for installing the temperature measuring element 300 is reserved between the first heating section, the second heating section and the third heating section, and the sections of the first heating section, the second heating section and the third heating section are approximately U-shaped, so that when a voltage is applied to two open ends of the U-shape, heating can be achieved.

The temperature measuring element 300 in this embodiment may be a PTC (Positive Temperature Coefficient) positive temperature coefficient thermistor, which covers a second preset area on the outer wall of the substrate tube 100, that is, the temperature measuring element 300 also covers a partial area on the outer wall of the substrate tube 100. The temperature measuring member 300 may be close to the heating member 200, so as to ensure accuracy of temperature measurement, that is, the outer wall of the substrate tube 100 includes a first preset area and a second preset area, and the first preset area and the second preset area do not overlap.

It should be noted that the specific sizes, shapes, positions, etc. of the first preset area and the second preset area may be determined according to actual requirements.

The package 400 in this embodiment is used to package the heating element 200 and the temperature measuring element 300 on the substrate tube 100, which may be made of polyimide or ceramic, and the package 400 covers the heating element 200 and the temperature measuring element 300.

Wherein the heating element 200 may be connected to a power source via electrodes or other conductive means to provide power. Accordingly, the temperature sensing member 300 may also be connected to the controller via electrodes or other conductive members to transmit electrical signals.

It will be appreciated that the application of the heating element in the embodiments of the present application, by integrating the heating element 200, the temperature measuring element 300 and the package 400 on the substrate tube 100, forms a highly integrated element, has a smaller size, and can meet the design requirements of a small-volume portable heater or atomizer, more conveniently, compared to the application of the heating element without integration of the heating element and the temperature sensor.

Therefore, the heating element provided by the embodiment of the application includes the substrate tube 100, at least one heating element 200, at least one temperature measuring element 300 and at least one packaging element 400, by arranging the heating cavity 101 in the substrate tube 100, the heating element can be used for placing aerosol generating products and the like, by covering the heating element 200 on the first preset area on the outer wall of the substrate tube 100 for heating, by covering the temperature measuring element 300 on the second preset area on the outer wall of the substrate tube 100 for detecting the temperature of the substrate tube 100, by covering the packaging element 400 on a part of the heating element 200 and a part of the temperature measuring element 300, wherein the heating element 200 is used for being connected with a power supply to supply power to the heating element 200, and the temperature measuring element 300 is used for being connected with a controller to convert the measurement signals on the temperature measuring element 300 into temperature information through the controller, that is, by integrating the heating element 200, the temperature measuring element 300 and the packaging element 400 on the substrate tube 100 to form a highly integrated element, which has smaller size, and can meet the design requirements of a small-size portable heater or atomizer.

In one possible design, the heating element 200 is a metal layer or a metal oxide layer or an alloy layer or a non-metal oxide layer.

Specifically, when voltage is applied to both ends of the heating member 200, resistance heat can be generated to achieve a heating function for a designated area, and a metal layer or a metal oxide layer or an alloy layer or a non-metal oxide layer can be formed on the outer wall of the substrate tube 100 through a deposition process.

The specific material, thickness, etc. of the heating element 200 may be determined according to practical requirements, and are not limited in this embodiment.

In some embodiments, the ratio of the area of the heating element 200 covering the substrate tube 100 to the total area of the outer periphery of the substrate tube 100 is greater than or equal to 60%.

By this arrangement, the heating efficiency on the substrate tube 100 can be improved, and the temperature uniformity can be improved. The specific ratio may be determined according to the actual requirement, and is not limited in this embodiment.

In some embodiments, the temperature measuring member 300 includes a temperature measuring portion 310 and a conductive portion 320, the temperature measuring portion 310 being adjacent to the heating member 200 and surrounded by the heating member 200.

The conductive part 320 is connected to the temperature measuring part 310 and is used for being connected to a controller.

The temperature measuring part 310 is surrounded by the heating element 200 to further ensure the accuracy of temperature measurement, and the temperature measuring part 310 can be deposited and adhered on the substrate tube 100. The conductive part 320 is connected to the temperature measuring part 310, and is used for transmitting a measurement signal of the temperature measuring part 310 to the controller, which can be also deposited and stuck on the substrate tube 100.

Preferably, the conductive portion 320 may be electrically connected by a film technique and a micro connection technique, which may be formed on the substrate tube 100 by a deposition process (e.g., evaporation or sputtering, etc.).

Further, in the present embodiment, at least a first electrode 410 and a second electrode 420 are disposed in the package 400, and the first electrode 410 is connected to the heating element 200 and is used for connection to a power source.

The second electrode 420 is connected to the conductive part 320 and is used for connection with a controller.

Specifically, as shown in fig. 1, a first electrode 410 (i.e., a pin) in the package 400 is connected to the heating element 200 and is used for connection to a power source, where the first electrode 410 includes at least a first lead-in portion and a first lead-out portion, and the first lead-in portion and the first lead-out portion respectively correspond to a positive electrode and a negative electrode of the power source to form a loop. The second electrode 420 (i.e., a pin) in the package 400 is connected to the conductive portion 320 and is used for being connected to the controller, where the second electrode 420 includes at least a second lead-in portion and a second lead-out portion, and the second lead-in portion and the second lead-out portion respectively correspond to two terminals of the detection circuit on the controller to form a loop.

Thus, the detection signal on the temperature measuring part 310 can be transmitted to the second electrode 420 through the conductive part 320. Wherein the number of conductive parts 320 corresponds to the number of second electrodes 420.

More specifically, in the present embodiment, the temperature measuring portion 310 is a metal layer or a metal oxide layer.

Specifically, the temperature measuring part 310 may form a metal layer or a metal oxide layer on the outer wall of the substrate tube 100 through a deposition process. In particular, a platinum (Pt) metal layer is used, which has a stable resistance-temperature relationship, and an annealing treatment is used during the preparation process to avoid zero drift in the resistance-temperature relationship.

Further, in the present embodiment, the temperature measuring portion 310 is curved.

By the arrangement, the length of the temperature measuring part 310 can be controlled in a limited space so as to meet the temperature measuring requirement. The specific material, shape, thickness, etc. of the temperature measuring part 310 may be determined according to actual requirements, and are not limited in this embodiment.

In some embodiments, the heating member 200 and the temperature measuring member 300 each extend to an end of the substrate tube 100, and the encapsulation member 400 is disposed at the end of the substrate tube 100 and covers a portion of the heating member 200 and a portion of the temperature measuring member 300.

Thus, a set of the heating element 200, the temperature measuring element 300 and the package 400 can be formed at one end of the substrate tube 100, and a set of the heating element 200, the temperature measuring element 300 and the package 400 can be formed at the other end of the substrate tube 100 for selectively heating, measuring temperature, etc. different sections of the substrate tube 100.

In some embodiments, a protective member 500 is further included, and the protective member 500 is at least coated on the heating member 200 and the temperature measuring member 300.

By this arrangement, the heating element 200 and the temperature measuring element 300 can be wrapped to form a protection.

Specifically, in the present embodiment, the protector 500 is a quartz glass layer or a ceramic layer or a non-metal oxide layer.

Wherein, the quartz glass layer or the ceramic layer or the non-metal oxide layer can be covered on the heating member 200 and the temperature measuring member 300 through a passivation process to form a passivation protection layer with a thickness of about 100nm, so that durability and stability can be enhanced, and the internal structure can be prevented or reduced from being influenced by external environment.

Of course, the protection member 500 may be replaced by other similar materials, and is not limited thereto.

In a second aspect, as shown in fig. 3, an embodiment of the present application further provides a method for manufacturing a heating element, which is used for the heating element provided in any one of the foregoing embodiments, including:

S100, providing a substrate tube 100.

Specifically, the substrate tube 100 may be selected according to the shape, size, etc. of the heated product.

S200, forming a heating element 200 in a first preset area on the outer wall of the substrate tube 100.

Specifically, the heating member 200 may be formed by deposition, adhesion, or the like at a first predetermined region on the outer wall of the substrate tube 100.

S300, forming a temperature measuring piece 300 in a second preset area on the outer wall of the substrate tube 100.

Specifically, the temperature measuring member 300 may be formed in a second preset area on the outer wall of the substrate tube 100 by deposition, adhesion, or the like, so that the temperature measuring member 300 may be close to the heating member 200 or surrounded by the heating member 200, thereby ensuring the accuracy of temperature measurement.

S400, packaging part of the heating element 200 and part of the temperature measuring element 300 to form the packaging element 400.

Specifically, the heating member 200 and the temperature measuring member 300 are packaged on the substrate tube 100 to form a package 400, form an integrated structure, and form protection. The first electrode 410 may be connected to the heating member 200, and the second electrode 420 may be connected to the temperature measuring member 300 to form a pin.

In this way, the integrated design integrates the heating element 200 and the temperature measuring element 300 on one element, which reduces the requirements of external sensors, reduces the complexity of equipment and the additional size requirements, improves the integration level, and can realize efficient heating and accurate temperature control by accurate temperature measurement and regulation of an external control unit, thereby improving the heating efficiency and the safety.

In some embodiments, forming the heating member 200 at a first predetermined area on the outer wall of the substrate tube 100 includes:

the heating member 200 is formed in a first preset pattern through a deposition process.

Specifically, the first preset pattern may be projected onto the outer wall of the substrate tube 100 by applying a paste, depositing a metal or metal oxide or alloy or non-metal oxide on the first preset area by evaporation, and forming the heating member 200 of the first preset pattern by photoresist stripping.

Of course, other steps may be included in the above process, such as cleaning, drying, curing, etc., and may be determined according to actual needs, which is not limited in this embodiment.

In some embodiments, forming the temperature measurement member 300 in the second predetermined area on the outer wall of the substrate tube 100 includes:

the temperature measuring member 300 is formed in a second preset pattern through a deposition process.

Specifically, the second preset pattern may be projected onto the adhesive by applying the adhesive on the outer wall of the substrate tube 100, depositing the metal or metal oxide on the second preset area by sputtering, and forming the temperature measuring member 300 of the second preset pattern by photoresist stripping.

More specifically, the temperature measuring member 300 is formed as follows:

1) The first glue coating is performed on the outer wall of the substrate tube 100, a pattern corresponding to the temperature measuring part 310 is projected onto the glue, metal or metal oxide is deposited in a second preset area through sputtering, and the temperature measuring part 310 with the second preset pattern is formed through photoresist stripping (or stripping).

2) And (3) performing second gluing on the outer wall of the substrate tube 100, projecting a pattern corresponding to the conductive part 320 onto the glue, depositing conductive metal on a second preset area through evaporation or sputtering, and removing (or stripping) the glue to form the conductive part 320 with the second preset pattern.

Of course, other steps, such as cleaning, drying, curing, etc., may be included in the above process, and may be determined according to practical needs, which is not limited in this embodiment.

In some embodiments, further comprising:

s500, forming a protecting member 500 at least on the heating member 200 and the temperature measuring member 300.

In this way, the heating element 200 and the temperature measuring element 300 can be protected by reinforcement.

More specifically, in the present embodiment, forming the protector 500 at least on the heating member 200 and the temperature measuring member 300 includes:

the protector 500 is formed through a passivation process.

Specifically, quartz glass or ceramic or nonmetallic oxide may be molded on the heating member 200 and the temperature measuring member 300 by a passivation process, but it is also possible to use the outer wall of the substrate tube 100. In addition, the protection member 500 may have one or more layers, and may be determined according to practical requirements, which is not particularly limited in this embodiment.

In a third aspect, an embodiment of the present application further provides an aerosol-generating device, including a device body and a heating element disposed on the device body, the heating element being a heating element provided in any of the above embodiments.

Or the heating element is obtained by the preparation method of the heating element provided by any embodiment.

The structure of the heating element is described in detail in the above embodiments, and will not be described here again.

Illustratively, the heating element may be disposed within the body of the aerosol-generating device, the aerosol-generating article being disposed within the substrate tube 100, the heating element 200 being capable of heating the aerosol-generating article, and the temperature measuring element 300 being capable of monitoring the temperature of the substrate tube 100 in real-time.

It will be appreciated that the aerosol-generating device provided in the embodiments of the present application may be used for placing an aerosol-generating article or the like by configuring a heating element including a substrate tube 100, at least one heating element 200, at least one temperature measuring element 300 and at least one package 400, by providing a heating chamber 101 in the substrate tube 100, by covering the heating element 200 on a first preset area on an outer wall of the substrate tube 100 for heating, by covering the temperature measuring element 300 on a second preset area on an outer wall of the substrate tube 100 for detecting a temperature of the substrate tube 100, by covering the package 400 on a part of the heating element 200 and a part of the temperature measuring element 300, wherein the heating element 200 is used for being connected to a power supply for supplying power to the heating element 200, and the temperature measuring element 300 is used for being connected to a controller for converting a measurement signal on the temperature measuring element 300 into temperature information by the controller, that is, by integrating the heating element 200, the temperature measuring element 300 and the package 400 on the substrate tube 100 into a highly integrated element, having smaller dimensions, and being capable of satisfying requirements of a small-volume heater or more convenient design.

In addition, a plurality of temperature measuring pieces 300 can be arranged in the heating element in different areas and even between different layers on the substrate tube 100, so that the multi-point three-dimensional monitoring of the temperature field inside the substrate tube 100 is realized, and more detailed temperature distribution data is provided for temperature monitoring.

Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It is to be understood that the application is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (16)

1.A heating element, comprising:

A substrate tube (100);

at least one heating element (200), said heating element (200) covering a first predetermined area on the outer wall of said substrate tube (100);

at least one temperature measuring piece (300), wherein the temperature measuring piece (300) is covered on a second preset area on the outer wall of the substrate tube (100);

at least one encapsulation (400), wherein the encapsulation (400) is arranged on part of the heating element (200) and part of the temperature measuring element (300);

The heating element (200) is used for being connected with a power supply, and the temperature measuring element (300) is used for being connected with a controller.

2. A heating element according to claim 1, characterized in that the heating element (200) is a metal layer or a metal oxide layer or an alloy layer or a non-metal oxide layer.

3. The heating element according to claim 1, characterized in that the ratio of the area of the heating element (200) covering the substrate tube (100) to the total area of the outer circumference of the substrate tube (100) is greater than or equal to 60%.

4. The heating element according to claim 1, wherein the temperature measuring member (300) comprises a temperature measuring portion (310) and a conductive portion (320), the temperature measuring portion (310) being adjacent to the heating member (200) and surrounded by the heating member (200);

The conductive part (320) is connected with the temperature measuring part (310) and is used for being connected with the controller.

5. The heating element according to claim 4, wherein at least a first electrode (410) and a second electrode (420) are provided in the package (400), the first electrode (410) being connected to the heating element (200) and being adapted to be connected to the power supply;

The second electrode (420) is connected to the conductive portion (320) and is configured to be connected to the controller.

6. The heating element according to claim 4, wherein the temperature measuring part (310) is a metal layer or a metal oxide layer.

7. The heating element according to claim 4, wherein the thermometric section (310) is curved.

8. The heating element of claim 1, wherein the heating element (200) and the temperature measuring element (300) each extend to an end of the substrate tube (100), and the encapsulation (400) is disposed at the end of the substrate tube (100) and covers a portion of the heating element (200) and a portion of the temperature measuring element (300).

9. The heating element according to any one of claims 1 to 8, further comprising a protector (500), the protector (500) being provided at least over the heating element (200) and the temperature measuring element (300).

10. A heating element according to claim 9, characterized in that the protection (500) is a quartz glass layer or a ceramic layer or a non-metal oxide layer.

11. A method of making a heating element comprising:

providing a substrate tube (100);

Forming a heating element (200) in a first predetermined area on the outer wall of the substrate tube (100);

Forming a temperature measuring piece (300) in a second preset area on the outer wall of the substrate tube (100);

and packaging part of the heating piece (200) and part of the temperature measuring piece (300) to form a packaging piece (400).

12. The method of manufacturing a heating element according to claim 11, wherein forming the heating element (200) in the first predetermined area on the outer wall of the substrate tube (100) comprises:

The heating element (200) is formed in a first preset pattern by a deposition process.

13. The method of manufacturing a heating element according to claim 11, wherein forming a temperature measurement member (300) at a second predetermined area on an outer wall of the substrate tube (100) comprises:

the temperature measuring member (300) is formed in a second preset pattern by a deposition process.

14. A method of preparing a heating element according to any one of claims 11 to 13, further comprising:

A protective element (500) is formed at least on the heating element (200) and the temperature measuring element (300).

15. The method of manufacturing a heating element according to claim 14, wherein forming a protective member (500) on at least the heating member (200) and the temperature measuring member (300) comprises:

The protector (500) is formed by a passivation process.

16. An aerosol-generating device comprising a device body and a heating element disposed on the device body, the heating element being the heating element of claims 1 to 10;

Or the heating element is obtained from the method of manufacturing a heating element according to claims 11 to 15.