Atomization device and electronic atomization equipment

Abstract

The utility model relates to the technical field of smoke atomization, and particularly discloses an atomization device and electronic atomization equipment. The heating body is partially or completely positioned in the heating cavity; wherein a first air inlet groove is formed in the side wall of the heating cavity, and a second air inlet groove is formed in the bottom of the heating cavity. Due to the fact that the first air inlet groove is formed in the side wall of the heating cavity, and the second air inlet groove is formed in the bottom of the heating cavity, after the atomization matrix is inserted into the heating cavity, the first air inlet groove and the second air inlet groove form an air inlet channel; according to the arrangement of the air inlet structure, the opening of the heating cavity is directly used as the air inlet structure, an air inlet hole does not need to be additionally formed in the atomization shell, and the appearance of the atomization shell is more complete and attractive; and after the atomization substrate is pulled out, the first air inlet groove and the second air inlet groove are communicated with the heating cavity to form an open structure, tobacco tar is difficult to accumulate in the first air inlet groove and the second air inlet groove, the problem that the air inlet channel is blocked does not exist, and the smoking experience of a user is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke atomization, in particular to an atomization device and an electronic atomization device. Background Art

[0002] In the field of heat-not-burn, the existing air intake mode of the center heating type smoking device needs to set air intake holes on the outer shell of the product, which will cause small holes on the appearance of the product. After long-term use, the accumulated e-liquid will flow out from the small holes and block the small holes, which not only affects the appearance but also affects the user's smoking experience. Summary of the Utility Model

[0003] The atomization device and the electronic atomization device of the utility model are used to solve the problems of blockage of the air intake holes of the shell and affecting the appearance.

[0004] In one embodiment, an atomization device is provided, including:

[0005] An atomization shell, in which there is a heating cavity, the heating cavity has an opening extending out of the atomization shell, and the heating cavity is used for inserting an atomization matrix; and

[0006] A heating element, part or all of which is located in the heating cavity, and the heating element is used for inserting into the interior of the atomization matrix and heating the atomization matrix;

[0007] Wherein, a first air intake groove is provided on the side wall of the heating cavity, a second air intake groove is provided at the bottom of the heating cavity, one end of the first air intake groove extends to the opening, and the other end extends to communicate with the second air intake groove. The first air intake groove and the second air intake groove form an air intake channel for guiding external air from the opening to the end where the atomization matrix is inserted.

[0008] In one embodiment, an installation hole is provided at the bottom of the heating cavity, and the heating element is inserted into the heating cavity from the installation hole; the second air intake groove surrounds the periphery of the installation hole.

[0009] In one embodiment, the second air intake groove includes one or more concentric annular grooves.

[0010] In one embodiment, the second air intake groove includes one or more concentric spiral grooves.

[0011] In one embodiment, the first air intake groove includes one or more straight grooves or curved grooves distributed along the axial direction of the heating cavity.

[0012] In one embodiment, an installation part is provided in the atomization shell, the installation part has the heating cavity, the first air intake groove is located on the inner circumferential side wall of the installation part, and the second air intake groove is located on the inner side wall of the axial end of the installation part.

[0013] In one embodiment, the mounting member is snap-fitted and fixed to the atomizing shell.

[0014] In one embodiment, the mounting member includes a first mounting member and a second mounting member. The first mounting member is a cylinder, and the second mounting member is a cover plate. The cover plate is mounted at one end of the cylinder. The cylinder and the cover plate enclose the heating chamber. The first air inlet groove is located on the inner side wall of the cylinder, and the second air inlet groove is located on the end face of the cover plate.

[0015] In one embodiment, the mounting member includes a first mounting member and a second mounting member. The first mounting member is a cylinder, and the second mounting member is a cap. The cap is mounted at one end of the cylinder. The cylinder and the cap enclose the heating chamber. The first air inlet groove is located on the inner side walls of the cylinder and the cap, and the second air inlet groove is located on the bottom end face of the cap.

[0016] In one embodiment, an electronic atomization device is provided, which includes a circuit board, a battery, and the atomization device described above. The circuit board is electrically connected to the battery and the heating element respectively.

[0017] For an atomization device and an electronic atomization device according to the above embodiments, since the first air inlet groove is provided on the side wall of the heating chamber and the second air inlet groove is provided at the bottom of the heating chamber, after the heating chamber is inserted into the atomization matrix, the first air inlet groove and the second air inlet groove will form an air inlet channel, and the air at the opening of the heating chamber can be introduced to the end where the atomization matrix is inserted, realizing the suction air intake of the atomization matrix; the setting of this air intake structure directly uses the opening of the heating chamber as the air intake structure, without additionally setting air inlet holes on the atomizing shell, and the appearance of the atomizing shell is more complete and beautiful; and after the atomization matrix is pulled out, the first air inlet groove and the second air inlet groove are communicated with the heating chamber to form an open structure, and it is difficult for e-liquid to accumulate in the first air inlet groove and the second air inlet groove, so there is no problem of blocking the air inlet channel, that is, it does not affect the user's suction experience. Description of the Drawings

[0018] Figure 1 It is a cross-sectional view of an atomization device in one embodiment;

[0019] Figure 2 It is a cross-sectional view of the atomization device inserting the atomization matrix in one embodiment;

[0020] Figure 3 It is a schematic structural diagram of the mounting member in one embodiment;

[0021] Figure 4 It is a top view of the mounting member in one embodiment;

[0022] Figure 5 It is a cross-sectional view of the mounting member in one embodiment;

[0023] Figure 6 Schematic diagram of air intake for the installation member to insert the atomization matrix in an embodiment;

[0024] Figure 7 Exploded sectional view of the installation member in an embodiment;

[0025] Figure 8 Side view of an electronic atomization device in an embodiment;

[0026] Figure 9 Cross-sectional view of an electronic atomization device in an embodiment;

[0027] The reference numerals are as follows:

[0028] 1 - atomization shell, 11 - connection structure;

[0029] 2 - installation member, 21 - heating chamber, 22 - installation hole, 23 - first air intake groove, 24 - second air intake groove, 25 - clamping portion, 2a - first installation member, 2b - second installation member.

[0030] 3 - heating element;

[0031] 4 - atomization matrix;

[0032] 5 - heating element mounting seat;

[0033] 6 - circuit board;

[0034] 7 - battery. Detailed implementation manners

[0035] The present utility model will be further described in detail below in conjunction with the accompanying drawings through specific implementation manners. Similar elements in different implementation manners are labeled with related similar reference numerals. In the following implementation manners, many detailed descriptions are provided to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification to avoid the core part of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the descriptions in the specification and the general technical knowledge in the art.

[0036] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0037] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0038] In one embodiment, an atomizer device is provided. The atomizer device is a heat-not-burn smoking device, which is used to insert a cigarette-shaped atomizer matrix, and can internally heat the inserted atomizer matrix. The atomizer device combines an air intake channel with a heating chamber, that is, an air intake channel is provided on the side wall of the heating chamber, and there is no need to provide a separate air intake channel in the atomizer device, so that the shell of the atomizer device does not need to be provided with a separate air intake port, which can improve the aesthetics of the atomizer device. The air intake channel is an open structure, which is not easy to be blocked by oil and does not affect the user's smoking experience.

[0039] Please refer to Figures 1 to 6 The atomizing device of this embodiment mainly includes an atomizing shell 1, a mounting member 2 and a heating body 3. A receiving cavity is provided in the atomizing shell 1. The mounting member 2 is installed in the receiving cavity of the atomizing shell 1. The mounting member 2 and the atomizing shell 1 can be fixedly connected by means of clamping, bonding, screw connection, etc.

[0040] The atomizer shell 1 can be composed of a plurality of shells, and the plurality of shells can be connected by non-detachable snap-fitting, and some of the shells can also be fixed by detachable snap-fitting. For example, the bottom shell of the atomizer shell 1 is configured as a detachable structure, and the internal components of the atomizer shell 1 can be maintained and replaced by removing the bottom shell.

[0041] One end of the atomizer shell 1 is provided with an opening, the mounting member 2 is a cylindrical structure, a heating chamber 21 is provided in the mounting member 2, one end of the heating chamber 21 is provided with an opening, the opening of the heating chamber 21 is axially aligned and communicated with the opening of the atomizer shell 1, and the atomizer matrix 4 can be inserted into the heating chamber 21 from the opening of the atomizer shell 1. The heating chamber 21 and the accommodating chamber of the atomizer shell 1 are independent of each other, which can prevent the smoke oil in the heating chamber 21 from entering the accommodating chamber in the atomizer shell 1 and affecting other components in the atomizer shell 1, especially electronic components.

[0042] One end of the heating chamber 21 away from the opening is the bottom of the heating chamber 21 , and the bottom of the heating chamber 21 is used to support and limit the inserted atomized substrate 4 .

[0043] The bottom of the heating chamber 21 is provided with a mounting hole 22. The heating element 3 can be a needle-shaped resistance heating structure. One end of the heating element 3 passes through the mounting hole 22 and inserts into the heating chamber 21, and the other end of the heating element 3 is located outside the heating chamber 21. The heating element 3 is used to insert into the interior of the atomization matrix 4 to heat the interior of the atomization matrix 4.

[0044] In other embodiments, the heating element 3 can also be entirely located within the heating chamber 21, and the mounting hole 22 at the bottom of the heating chamber 21 is used to pass through and connect the cable of the heating element 3.

[0045] In this embodiment, the inner diameter of the mounting hole 22 is the same as the outer diameter of the heating element 3, and a sealed connection can be provided between the mounting hole 22 and the heating element 3, so that the smoke oil generated by the atomization matrix 4 will not enter the accommodation cavity of the atomization shell 1 from the mounting hole 22, and the influence of the smoke oil on other components within the atomization shell 1 can be avoided.

[0046] In other embodiments, the inner diameter of the mounting hole 22 can also be larger than the outer diameter of the heating element 3, and a sealing structure is provided on the outer side of the mounting hole 22. The sealing structure is used to block the gap between the mounting hole 22 and the heating element 3, and it can also prevent the smoke oil within the heating chamber 21 from entering the accommodation cavity of the atomization shell 1.

[0047] In this embodiment, the side wall of the heating chamber 21 is provided with a first air inlet groove 23, and the bottom of the heating chamber 21 is provided with a second air inlet groove 24, that is, the circumferential inner side wall of the mounting member 2 is provided with the first air inlet groove 23, and the axial inner end face of the mounting member 2 is provided with the second air inlet groove 24. One end of the first air inlet groove 23 extends to the opening of the heating chamber 21, and the other end of the first air inlet groove 23 extends to communicate with the second air inlet groove 24. The first air inlet groove 23 and the second air inlet groove 24 communicate to form an air inlet passage. When the atomization matrix 4 is inserted into the heating chamber 21, the circumferential side surface of the atomization matrix 4 is an airtight surface, and the circumferential side surface of the atomization matrix 4 and the first air inlet groove 23 enclose to form the air inlet passage. The end of the atomization section of the atomization matrix 4 is an air-permeable surface, and the end air-permeable surface of the atomization matrix 4 communicates with the second air inlet groove 24, so that external air can enter the second air inlet groove 24 along the first air inlet groove 23, and then enter the atomization matrix 4 from the end air-permeable surface of the atomization section of the atomization matrix 4. In other words, in the state where the atomization matrix 4 is not inserted, the first air inlet groove 23 and the second air inlet groove 24 communicate with the heating chamber 21, which is an open structure; in the state where the atomization matrix 4 is inserted, under the combination of the atomization matrix 4, the first air inlet groove 23 and the second air inlet groove 24 are enclosed to form an air inlet passage, and external air can be introduced to the end of the insertion end of the atomization matrix 4.

[0048] In this embodiment, the first air inlet groove 23 may include one or more straight grooves distributed along the axial direction of the heating cavity 21, and the one or more straight grooves are all communicated with the second air inlet groove 24. For example, the first air inlet groove 23 includes two symmetrically arranged straight grooves. The number, groove width and groove depth of the first air inlet groove 23 can be set as required to meet the required air intake volume.

[0049] In other embodiments, the first air inlet groove 23 may also include one or more curved grooves distributed along the axial direction of the heating cavity 21. The curved grooves can increase the path length of the first air inlet groove 23, so that after the atomization matrix 4 is heated, the diffused heat can be fully absorbed by the incoming air and then introduced into the atomization matrix 4, which can improve the heat recovery rate and thus improve the heating efficiency.

[0050] In this embodiment, the second air inlet groove 24 may include one or more concentric annular grooves surrounding the installation hole 22. When the second air inlet groove 24 includes a plurality of annular grooves, the second air inlet groove 24 further includes connecting grooves connecting the plurality of annular grooves so that the plurality of annular grooves communicate with each other. The number, groove width and groove depth of the annular grooves of the second air inlet groove 24 can be set as required to meet the required air intake volume.

[0051] In other embodiments, the second air inlet groove 24 may include one or more spiral grooves in a spiral structure. The plurality of spiral grooves can communicate with each other or can be respectively communicated with the plurality of first air inlet grooves 23 in one-to-one correspondence. The number, groove width and groove depth of the spiral grooves of the second air inlet groove 24 can be set as required to meet the required air intake volume.

[0052] In other embodiments, the first air inlet groove 23 and the second air inlet groove 24 may also be in other shapes. For example, the first air inlet groove 23 and the second air inlet groove 24 are in shapes such as broken lines and parabolas.

[0053] In this embodiment, the first air inlet groove 23 and the second air inlet groove 24 are formed by sinking the inner side wall and the end face of the installation member 2. The first air inlet groove 23 and the second air inlet groove 24 can also be provided with corresponding convex structures on the inner side wall and the end face of the installation member 2, and the convex structures are arranged at intervals to form the first air inlet groove 23 and the second air inlet groove 24.

[0054] In the atomizing device of this embodiment, since the first air inlet groove 23 is provided on the side wall of the heating chamber 21 and the second air inlet groove 24 is provided at the bottom of the heating chamber 21, after the heating chamber 21 is inserted into the atomizing matrix 4, the first air inlet groove 23 and the second air inlet groove 24 will form an air inlet channel, which can introduce the air at the opening of the heating chamber 21 to the end where the atomizing matrix 4 is inserted, realizing the suction intake of the atomizing matrix 4; with the setting of this air intake structure, the opening of the heating chamber 21 is directly used as the air intake structure, without additionally setting air inlet holes on the atomizing shell 1, making the appearance of the atomizing shell 1 more complete and beautiful; and after the atomizing matrix 4 is pulled out, the first air inlet groove 23 and the second air inlet groove 24 are communicated with the heating chamber 21 to form an open structure, making it difficult for e-liquid to accumulate in the first air inlet groove 23 and the second air inlet groove 24, and thus there is no problem of blocking the air inlet channel, that is, it does not affect the user's suction experience.

[0055] In one embodiment, a plurality of protrusions are provided on the side wall and the bottom of the heating chamber 21. The protrusions can be dot protrusions, strip protrusions or protrusions of other shapes. Regular or irregular first air inlet grooves 23 and second air inlet grooves 24 are formed between the protrusions. With this structure, an air inlet channel can also be formed after the heating chamber 21 is inserted into the atomizing matrix 4, for introducing air from the opening of the heating chamber 21 to the end of the atomizing matrix 4; and open first air inlet grooves 23 and second air inlet grooves 24 are formed, which can prevent oil blockage in the first air inlet groove 23 and the second air inlet groove 24.

[0056] Please refer to Figures 3 to 5 , in one embodiment, the mounting member 2 is fixedly connected to the atomizing shell 1. A protruding clamping portion 25 is provided on the outer side surface of the mounting member 2. The atomizing shell 1 is provided with a corresponding clamping portion, or a connecting structure 11 is installed on the atomizing shell 1, and a corresponding clamping portion is provided on the connecting structure 11. The mounting member 2 can be clamped and fixed to the atomizing shell 1 through the clamping portion 25.

[0057] In other embodiments, the mounting member 2 can also be fixedly connected to the atomizing shell 1 in other ways. For example, the mounting member 2 can be provided with an external thread, and the atomizing shell 1 is provided with a corresponding internal thread, or the connecting structure 11 connected to the atomizing shell 1 is provided with a corresponding internal thread, and the mounting member 2 and the atomizing shell 1 are fixedly connected by means of screw connection.

[0058] In other embodiments, the mounting member 2 can also be detachably connected to the atomizing shell 1 to realize the disassembly and cleaning of the mounting member 2. The mounting member 2 can be detachably connected to the atomizing shell 1 by means of screw connection or clamping.

[0059] Please refer to Figure 7In one embodiment, the mounting member 2 includes a first mounting member 2a and a second mounting member 2b. The first mounting member 2a is a cylinder with openings at both ends, and the second mounting member 2b is a cover plate. The cover plate is fixed to one end of the cylinder by means of snap connection, bonding, interference fit, etc., and seals one end opening of the cylinder. The cylinder and the cover plate enclose a heating chamber 21.

[0060] The first air inlet groove 23 is located on the inner side wall of the cylinder, and the second air inlet groove 24 is located on the end face of the cover plate. The mounting member 2 is provided as the first mounting member 2a and the second mounting member 2b, which is convenient for the processing of the first air inlet groove 23 and the second air inlet groove 24.

[0061] In other embodiments, the mounting member 2 includes a first mounting member 2a and a second mounting member 2b. The first mounting member 2a is a cylinder with openings at both ends, and the second mounting member 2b is a cap. The cap is fixed to one end of the cylinder by means of snap connection, bonding, interference fit, etc., and seals one end opening of the cylinder. The cylinder and the cap enclose a heating chamber 21.

[0062] The first air inlet groove 23 is located on the inner side walls of the cylinder and the cap, and the second air inlet groove 24 is located on the bottom end face of the cap. The mounting member 2 is provided as the first mounting member 2a and the second mounting member 2b, which is convenient for the processing of the first air inlet groove 23 and the second air inlet groove 24.

[0063] In other embodiments, the mounting member 2 can also be an integral structure. The mounting member 2 is integrally formed with a heating chamber 21 having a first air inlet groove 23 and a second air inlet groove 24 by means of casting or 3D printing, etc.

[0064] Please refer to Figure 1 and Figure 2 In one embodiment, a heating element mounting seat 5 can also be provided in the atomization shell 1. The heating element mounting seat 5 is mounted in the accommodating cavity of the atomization shell 1 by means of snap connection and screw connection. One end of the heating element 3 located outside the heating chamber 21 is fixed to the heating element mounting seat 5, and the heating element mounting seat 5 plays a role in fixedly mounting the heating element 3.

[0065] The heating element mounting seat 5 can be made of an insulating and heat-insulating material to prevent the heat generated by the heating element 3 from being transferred to the atomization shell 1 through the heating element mounting seat 5, and the heat loss of the heating element 3 can be avoided.

[0066] In one embodiment, the mounting member 2 can be made of an insulating and heat-insulating material. For example, the mounting member 2 can be a plastic such as PEEK, nylon, PPSU, etc. that can withstand high temperatures of 200°C - 400°C, or it can also be a high-temperature resistant ceramic material. The mounting member 2 forms a heat-insulating cover that wraps the heat energy generated by the heating element 3 in the heating chamber 21, which can reduce heat loss and improve the heating efficiency of the heating chamber 21.

[0067] In one embodiment, the mounting member 2 can also be a double-layer hollow structure. The air layer inside the mounting member 2 can play a role in air insulation and further improve the heat insulation effect of the mounting member 2.

[0068] Please refer to Figure 8 and Figure 9 , in one embodiment, an electronic atomization device is provided. The electronic atomization device includes a circuit board 6, a battery 7, and the atomization device in any of the above embodiments.

[0069] The circuit board 6 and the battery 7 are installed in the atomization shell 1. The circuit board 6 is electrically connected to the battery 7 and the heating element 3 respectively. The battery 7 is used to store electrical energy, and the battery 7 provides electrical energy for the operation of the circuit board 6 and the heating element 3. The circuit board 6 is used to control the heating of the heating element 3.

[0070] Among them, the heating element 3 can be electrically connected to the circuit board 6 through a cable, or the heating element 3 can also be directly electrically connected to the circuit board 6 through a contact.

[0071] In this embodiment, the atomization device included in the electronic atomization device, due to the first air inlet groove 23 provided on the side wall of the heating cavity 21 and the second air inlet groove 24 provided at the bottom of the heating cavity 21, after the heating cavity 21 is inserted into the atomization matrix 4, the first air inlet groove 23 and the second air inlet groove 24 will form an air inlet channel, and the air at the opening of the heating cavity 21 can be introduced to the end where the atomization matrix 4 is inserted, realizing the suction air intake of the atomization matrix 4; the setting of this air intake structure directly uses the opening of the heating cavity 21 as the air intake structure, without additionally setting air inlet holes on the atomization shell 1, and the appearance of the atomization shell 1 is more complete and beautiful; and after the atomization matrix 4 is pulled out, the first air inlet groove 23 and the second air inlet groove 24 are communicated with the heating cavity 21 to form an open structure, and it is difficult to accumulate e-liquid in the first air inlet groove 23 and the second air inlet groove 24, and thus there is no problem of blocking the air inlet channel, that is, it does not affect the user's suction experience.

[0072] The above uses specific examples to elaborate on the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the technical field to which the present invention belongs, according to the idea of the present invention, several simple deductions, deformations or substitutions can also be made.

Claims

1. An atomizing device, characterized in that: include: An atomizing shell, wherein the atomizing shell has a heating chamber therein, the heating chamber has an opening extending out of the atomizing shell, and the heating chamber is used for inserting an atomizing substrate; as well as A heating body, part or all of which is located in the heating chamber, and the heating body is used to be inserted into the atomized substrate and heat the atomized substrate; In which, a first air inlet groove is provided on the side wall of the heating chamber, and a second air inlet groove is provided on the bottom of the heating chamber. One end of the first air inlet groove extends to the opening, and the other end extends to communicate with the second air inlet groove. The first air inlet groove and the second air inlet groove form an air inlet channel for guiding external air from the opening to the end where the atomizing matrix is ​​inserted.

2. The atomizing device according to claim 1, characterized in that A mounting hole is provided at the bottom of the heating chamber, and the heating body is inserted into the heating chamber through the mounting hole; the second air inlet groove surrounds the mounting hole.

3. The atomizing device according to claim 2, characterized in that The second air inlet groove includes one or more concentric annular grooves.

4. The atomizing device according to claim 2, characterized in that: The second air inlet groove includes one or more concentric spiral grooves.

5. The atomizing device according to claim 1, characterized in that: The first air inlet groove includes one or more straight grooves or curved grooves distributed along the axial direction of the heating chamber.

6. The atomizing device according to any one of claims 1 to 5, characterized in that: A mounting piece is arranged in the atomizing shell, and the mounting piece has the heating chamber. The first air inlet groove is located on the circumferential inner side wall of the mounting piece, and the second air inlet groove is located on the inner side wall of the axial end of the mounting piece.

7. The atomizing device according to claim 6, characterized in that The mounting piece is clamped and fixed to the atomizing shell.

8. The atomizing device according to claim 6, characterized in that: The mounting member includes a first mounting member and a second mounting member, the first mounting member is a cylinder, the second mounting member is a cover plate, the cover plate is mounted on one end of the cylinder, the cylinder and the cover plate enclose the heating chamber, the first air inlet groove is located on the inner side wall of the cylinder, and the second air inlet groove is located on the end surface of the cover plate.

9. The atomizing device according to claim 6, characterized in that: The mounting member includes a first mounting member and a second mounting member, the first mounting member is a cylinder, the second mounting member is a cap, the cap is mounted on one end of the cylinder, the cylinder and the cap enclose the heating chamber, the first air inlet groove is located on the inner side walls of the cylinder and the cap, and the second air inlet groove is located on the bottom end surface of the cap.

10. An electronic atomization device, characterized in that: The invention comprises a circuit board, a battery and an atomizing device as claimed in any one of claims 1 to 9, wherein the circuit board is electrically connected to the battery and the heating body respectively.

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