CN113133558A

CN113133558A - Electronic atomization device and power supply assembly

Info

Publication number: CN113133558A
Application number: CN202110476104.XA
Authority: CN
Inventors: 周军; 方伟明
Original assignee: Shenzhen Smoore Technology Ltd
Current assignee: Shenzhen Smoore Technology Ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-07-20
Also published as: WO2022228007A1

Abstract

The invention relates to an electronic atomization device and a power supply assembly, wherein the power supply assembly comprises a shell, an airflow induction device accommodated in the shell and a negative pressure air passage arranged in the shell; the air flow sensing device is communicated with the negative pressure air passage; the power supply assembly further comprises a vent; the vent hole is communicated with the negative pressure air passage and the outside. This power supply unit is through setting up in the air vent of this negative pressure air flue and outside intercommunication, and then can accelerate the inside negative pressure of release air flue to still appear delaying the problem of heating after having solved and stopping atomizing.

Description

Electronic atomization device and power supply assembly

Technical Field

The present disclosure relates to an atomizer, and more particularly, to an electronic atomizer and a power supply assembly.

Background

Electronic atomization device among the correlation technique adopts air current induction system to start the atomizer usually, though electronic atomization device can work, the problem that can't control the accurate work of atomization device appears easily, for example the problem that causes delayed heating because of the unable timely pressure release of negative pressure air flue appears.

Disclosure of Invention

The invention aims to provide an improved power supply assembly, and further provides an improved electronic atomization device.

The technical scheme adopted by the invention for solving the technical problems is as follows: constructing a power supply assembly, which comprises a shell, an airflow induction device accommodated in the shell and a negative pressure air channel arranged in the shell;

the air flow sensing device is communicated with the negative pressure air passage;

the power supply assembly further comprises a vent; the vent hole is communicated with the negative pressure air passage and the outside.

In some embodiments, the aperture of the vent hole is 0.3-0.8 mm.

In some embodiments, the air flow sensing device comprises a first air vent in communication with the negative pressure air passage;

in some embodiments, the vent hole is located a set distance away from the first vent hole;

the set distance is 0.6-1.2 mm.

In some embodiments, the power supply assembly further comprises an air guide structure disposed in the housing and in communication with the airflow sensing device;

the negative pressure air channel is formed in the air guide structure;

the vent hole is arranged on the air guide structure.

In some embodiments, a gap is left between the air guide structure and the housing, and the gap is communicated with the vent hole to form a communication channel for pressure relief or for external air to enter.

In some embodiments, the housing is provided with a through hole communicating with the vent hole and the outside.

In some embodiments, the power supply assembly further comprises an airflow channel disposed in the housing and in communication with the airflow sensing device and the exterior;

the vent is in communication with the airflow channel.

In some embodiments, the power supply assembly further comprises a support for supporting the air guide structure;

the bracket is provided with a through hole which is arranged corresponding to the vent hole and communicated with the vent hole.

In some embodiments, the air guide structure comprises a first air guide and a second air guide; one end of the first air guide part is communicated with the airflow sensing device; the second air guide part is arranged at one end of the first air guide part, which is far away from the airflow induction device, is connected with the first air guide part and is arranged at a set included angle with the first air guide part;

the first air guide part and the second air guide part are hollow structures with two through ends; the negative pressure air passage is formed in the first air guide part and the second air guide part;

the vent hole is arranged on the first air guide part or the second air guide part.

In some embodiments, the housing comprises a sidewall;

the first air guide comprises a first air guide wall extending from the air flow induction device towards the side wall;

the vent hole is arranged on the first air channel wall.

In some embodiments, the housing includes an opening into which the atomizer fits;

the second air guide part comprises a second air channel wall, one end of the second air channel wall is connected with the first air guide part, and the other end of the second air channel wall extends along the opening direction;

the vent hole is arranged on the second air channel wall.

In some embodiments, the power supply assembly includes a cell housed in the housing;

the housing includes an end wall and an opening disposed opposite the end wall for receiving an atomizer;

the battery cell comprises a first end and a second end, wherein the first end is arranged corresponding to the end wall, and the second end is arranged corresponding to the opening;

the airflow sensing device is installed at the second end of the battery core.

In some embodiments, the distance from the vent to the opening is greater than the distance from the airflow sensing device to the opening.

In some embodiments, the air flow inducing device further comprises a second air hole communicating with the outside;

and the end wall is provided with an air inlet communicated with the second air hole.

In some embodiments, a gap is left between the casing and the battery cell, and the gap forms an airflow channel communicated with the air inlet hole and the second air hole.

the aperture of the communicating hole is larger than that of the first air hole;

the aperture of the communicating hole is 0.3-1.0 mm.

In some embodiments, the power supply assembly further comprises a circuit board connected to the cells; and the circuit board is provided with a communicating hole communicated with the negative pressure air passage and the airflow induction device.

In some embodiments, the vent hole is disposed on the wiring board and communicates with the outside.

In some embodiments, the power supply assembly further comprises a circuit board to which the airflow sensing device is mounted;

a plurality of first bonding pads for welding the airflow sensing device are arranged on the circuit board; the plurality of first pads are arranged at intervals, and gaps between two adjacent first pads form the vent holes.

In some embodiments, the gas flow sensing device is a MEMS sensor.

The invention also constructs an electronic atomization device which is characterized by comprising the power supply assembly and an atomizer connected with the power supply assembly; wherein, the electronic atomization device further comprises an air inlet channel, and the air inlet channel is communicated with the negative pressure air channel in the power supply assembly.

The electronic atomization device and the power supply assembly have the following beneficial effects: this power supply unit is through setting up in the air vent of this negative pressure air flue and outside intercommunication, and then can accelerate the inside negative pressure of release air flue to still appear delaying the problem of heating after having solved and stopping atomizing.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a sectional view of an electronic atomizer according to a first embodiment of the present invention;

fig. 2 is a sectional view of an electronic atomizer according to a second embodiment of the present invention;

fig. 3 is a sectional view of an electronic atomizer according to a third embodiment of the present invention;

fig. 4 is a sectional view of an electronic atomizer according to a fourth embodiment of the present invention;

fig. 5 is a sectional view of an electronic atomizer according to a fifth embodiment of the present invention;

fig. 6 is a sectional view of an electronic atomizer according to a sixth embodiment of the present invention;

FIG. 7 is a schematic structural view of a circuit board of an electronic atomizer according to a seventh embodiment of the present invention;

fig. 8 is a schematic bottom structure view of an airflow sensing device of an electronic atomizer according to a seventh embodiment of the present invention.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

Fig. 1 shows a first embodiment of the electronic atomization device of the invention. In this embodiment, the electronic atomizer includes a power supply module 1 and an atomizer 2, wherein the power supply module 1 can be mechanically and/or electrically connected to the atomizer 2 to supply power to the atomizer 2. The atomizer 2 may be used to heat an atomized medium.

As shown in fig. 1, in the present embodiment, the power supply assembly 1 may include a housing 10, a battery cell 20, a circuit board 30, an airflow sensing device 40, and an air guide structure 50. The casing 10 can be used to house the battery cell 20, the circuit board 30, the airflow sensing device 40, and the air guide structure 50. The battery cell 20 may be electrically connected to the circuit board 30, and may be configured to supply power to the atomizer 2. The circuit board 30 may be disposed in the housing 10, may be located between the battery cell 20 and the atomizer 2, and may be electrically connected to the battery cell 20 and the atomizer 2. The airflow sensing device 40 is accommodated in the housing 10, and can be mounted on the circuit board 40 and electrically connected to the circuit board 40. The air guide structure 50 may be disposed in the housing 10 and may be disposed on a side of the circuit board 40 opposite to the airflow sensing device 40.

Further, in the present embodiment, the housing 10 may be a cylindrical structure. The housing 10 may include an end wall 11, an opening 12 disposed opposite the end wall 11, and a side wall 13 disposed on the end wall 11. The end wall 11 may be generally oval or rectangular in shape. The opening 12 can be used for the atomizer 2 to be inserted into the housing 10. The side wall 13 may be disposed along a circumferential direction of the end wall 11, and may form an accommodating cavity around the end wall 11 for accommodating components such as the battery cell 20 and the circuit board 30. In some embodiments, the housing 10 may be an injection molded part, although it is understood that in other embodiments, the housing 10 may not be limited to injection molded parts, and in other embodiments, the housing 10 may be a metal housing. In this embodiment, the end wall 11 may be provided with an air inlet hole 111, the air inlet hole 111 may be communicated with the accommodating cavity, and the air inlet hole 111 may allow external air to enter the airflow sensing device 40.

Further, in the present embodiment, the battery cell 20 may be disposed near the end wall 11. The battery cell 20 may include a battery cell body 21 and an electrode plate 22 disposed on the battery cell body 21 and electrically connected to the circuit board 30. In this embodiment, the electrode sheet 22 may be connected to the circuit board 30 by providing a wire. Of course, it is understood that in other embodiments, the electrode sheet 22 may not be limited to be connected to the circuit board 30 by a conducting wire, but may also be connected to the circuit board 30 by a conducting structure such as a conducting strip or a conducting post. In some embodiments, the cell 20 may include a first end and a second end. The first end may be an end of the cell body 21 disposed opposite the end wall 11, and the second end may be an end of the cell body 21 disposed opposite the opening 12.

Further, in the present embodiment, the circuit board 30 may be mounted at the second end of the battery cell 20, and may be electrically connected to the electrode plate on the battery cell body 21. In some embodiments, the circuit board 30 may be a main control board. In some embodiments, the circuit board 30 may be provided with a communication hole 31, and the communication hole 31 may be used to communicate the air flow inducing device 40 and the air guide structure 50. Alternatively, in some embodiments, the aperture of the communication hole 31 may be 0.3 to 1.0 mm.

Further, in the present embodiment, the airflow sensing device 40 may be attached to the circuit board 30, and specifically, in some embodiments, the airflow sensing device 40 and the circuit board 30 may be fixed by soldering. The airflow sensing device 40 may be a MEMS sensor. Of course, it is understood that in other embodiments, the airflow sensing device 40 may not be limited to a MEMS sensor, and in other embodiments, the airflow sensing device 40 may be a microphone, which may be disposed in the negative pressure airway 53. The air flow sensing device 40 may include a sensing chip 41, a housing 42, a second air hole 43, and a first air hole 44; the sensing chip 41 can be accommodated in the housing 42, the second air hole 43 can be disposed at one side of the housing 42 and can be communicated with the outside, specifically, can be communicated with the air inlet hole 111, the first air hole 44 can be disposed at the other side of the housing 42 and can be isolated from the second air hole 43, and can be communicated with the negative pressure air channel 53 of the air guide structure 50 through the communication hole 31. In some embodiments, the diameter of the first air hole 44 may be smaller than that of the communication hole 31 (i.e., the diameter of the communication hole 31 is larger than that of the first air hole), and the gas flow sensor 40 is relatively easy to start by controlling the diameter of the communication hole 31 to be 0.3-1.0 mm, because if the diameter of the communication hole 31 is smaller than 0.3mm, the gas flow sensor 40 is difficult to start or cannot start due to deviation between the first air hole 44 and the communication hole 31 caused by manufacturing tolerance after the gas flow sensor 40 is attached; if the communication hole 31 is larger than 1.0mm, poor welding or no welding occurs at the first pad sealed by the ring below the airflow sensing device 40 (the communication hole 31 should be smaller than the inner diameter of the first pad sealed by the ring of the airflow sensing device 40), which may cause the air channel leakage to affect the starting difficulty or the starting failure of the silicon microphone.

Further, in this embodiment, the air guide structure 50 may be disposed between the circuit board 30 and the sidewall 13 of the housing 10, which may communicate with the communication hole 31, and may perform not only an air guide function but also a sealing function. In some embodiments, the gas directing structure 50 may be a piece of silicone. Of course, it will be appreciated that in other embodiments, the gas directing structure 50 may not be limited to a silicone piece. In some embodiments, the air guide structure 50 may include a first air guide 51 and a second air guide 52; one end of the first air guide part 51 may be communicated with the airflow sensing device 40, and further, one end thereof is connected with the first air hole 44 and may be communicated with the first air hole 44, and specifically, the first air guide part 51 may be disposed perpendicular to the circuit board 30 and the sidewall 13. In some embodiments, the first gas guide 51 is a hollow structure with two ends penetrating; the first air guide 51 may include a first air duct wall 511, and the first air duct wall 511 may extend from the first air hole 44 toward the side wall 13, and be perpendicular to the circuit board 30 and the side wall 13, respectively. The second air guide portion 52 may be disposed at an end of the first air guide portion 51 far from the airflow sensing device 40, and specifically, the second air guide portion 52 may be disposed at an end of the first air guide portion 51 far from the first air hole 44, connected to the first air guide portion 51, and may be disposed at a set included angle with the first air guide portion 51, and in some embodiments, the set included angle may be a right angle. Of course, it is understood that the set angle may not be limited to a right angle in other embodiments. The second air guide 52 may be extended in a direction toward the opening 12 along the length direction of the sidewall 13. The second air guide parts 52 are hollow structures with two through ends, and the second air guide parts 52 may include second air channel walls 521; one end of the second air channel wall 521 may be connected to the first air guide 51, and the other end may extend toward the opening 12. In some embodiments, the power supply module 1 may include a negative pressure air channel 53, and the negative pressure air channel 53 may be disposed in the air guide structure 50. In some embodiments, the first air guide 51 and the second air guide 52 are in communication with each other. The negative pressure air passage 53 may be formed in the first air guide 51 and the second air guide 52. The negative pressure air passage 53 may communicate with the first air hole 44 through the communication hole 31, and may be used to generate a negative pressure.

Further, in the embodiment, the power supply module 1 may further include a bracket 60, the bracket 60 may be disposed in the casing 10 and may be used for supporting the air guide structure 50, and in some embodiments, the bracket 60 may be omitted. In this embodiment, the bracket 60 may be provided with a through hole 61, and the through hole 61 may be disposed corresponding to the through hole 70 of the air guide structure 50 and may be communicated with the through hole 70.

Further, in the present embodiment, the power supply module 1 may further include a vent 70; the vent hole 70 may be disposed on the air guide structure 50, and specifically, the vent hole 70 may be disposed on the first air channel wall 521 on the second air guide portion 52, and is communicated with the negative pressure air channel 53, and disposed corresponding to the through hole 61, and may be communicated with the outside through the through hole 61. It is understood that in other embodiments, the vent hole 70 may be disposed on the first air guide 51 and located on the first air guide wall 511 of the first air guide 51. When the user sucks the electronic atomization device, the vent hole 70 can be used for allowing external air to enter the negative pressure air passage, so that the residual atomization medium in the air flow sensing device 40 and the negative pressure air passage 53 can be conveniently taken out. The vent 70 avoids the problems of delayed heating and false updating of the reference pressure at the end of the user's puff.

In some embodiments, the aperture of the vent hole 70 may preferably be 0.3-0.8 mm, and if the aperture of the vent hole 70 is less than 0.3mm, the venting will be too slow, and if the aperture of the vent hole 70 is greater than 0.8mm, the negative pressure required for starting is larger.

In some embodiments, the vent hole 70 may be located at the upper end of the airflow sensing device 40, i.e., the distance h1 from the vent hole 70 to the opening is smaller than the distance h2 from the airflow sensing device 40 to the opening, and the vent hole 70 may be located at a set distance D from the first air hole 44 (i.e., the vent hole 70 is located on the second air channel wall 521, not directly opposite to the first air hole 44, and is located at a set distance D from the first air hole 44 in the length direction of the second air channel wall 521); alternatively, in some embodiments, the set distance D may be 0.6-1.2 mm. If the distance between the vent hole 70 and the first air hole 44 is less than 0.6mm, the negative pressure required for starting the air flow sensing device 40 is larger, and if the distance between the vent hole 70 and the first air hole 44 is greater than 1.2mm, the pressure relief is too slow.

When airflow induction system is the miaow head, negative pressure passageway 53 designs the overlength and leads to negative pressure passageway 53 to be unable in time pressure release easily, and then leads to appearing delayed heating after atomizing, can make this negative pressure passageway 53 quick pressure release through setting up this air vent 70, and then avoids atomizing back atomizer to appear delayed heating problem. When the airflow sensing device is a MEMS sensor, the MEMS sensor has the following differences from a conventional microphone: 1) the starting negative pressure threshold value of the MEMS sensor (-100Pa to-300 Pa) is lower than that of the oil-proof microphone (-400Pa), because the delay heating after the pumping is stopped is easier to occur when the sensitivity is higher; 2) the MEMS sensor only has a single first air hole 44 (negative pressure receiving hole) with the diameter of 0.2mm, and the microphone has 6 negative pressure receiving holes with the diameter of 0.6mm in total, because a certain node of the negative pressure air passage is reduced, the pressure relief speed is influenced; 3) the MEMS sensor adopts epoxy resin or high-temperature glue to seal and isolate the negative pressure receiving surface and the atmospheric pressure surface, and the microphone is assembled and sealed to isolate the negative pressure receiving surface and the atmospheric pressure surface by tightly matching the inner wall of the microphone shell and the outer wall of the metal ring stuck with the vibrating membrane, so that a certain gap is formed between the wall and the microphone shell, and a certain air leakage function is realized; 4) the MEMS sensor reference pressure update mechanism (default reference pressure is atmospheric pressure) is different from the microphone reference pressure update mechanism. Since the MEMS sensor differs from a conventional microphone in the following way, it is more necessary to provide the venting hole for venting when using the MEMS sensor as an activation nebulizer element than when using a microphone as an activation nebulizer element.

In the normal atomization process, when atomization is stopped immediately, because negative pressure in the negative pressure air passage 53 cannot be released immediately, heating may be delayed after atomization is stopped, and the reference air pressure is updated by mistake (which is more likely to occur when strong suction or long suction is performed); if the surface of the MEMS sensor and the interior of the negative pressure air passage 53 are internally provided with the atomized medium or the condensate, the atomized medium and the condensate are difficult to be brought out during suction; particularly, the two situations are more likely to occur when the negative pressure air passage 53 is too long or the oil-storing negative pressure air passage 53 is designed; moreover, when the reference air pressure is updated by mistake, the starting negative pressure is raised after the air pressure is started again or the air pressure enters into a back-blowing prevention protection mechanism after the air pressure is stopped; in addition, the blocking of the negative airway pressure 53 by the atomizing medium and condensate can affect the sensitivity of suction initiation or poor suction initiation. The reference air pressure is updated by mistake, namely the reference air pressure is the atmospheric pressure under the condition of normal work, but when the external environment of the electronic atomization device changes, such as an airplane or an elevator is seated, the reference air pressure needs to be updated, namely, the reference air pressure is updated to the atmospheric pressure value of the current external environment, and the normal work of the electronic atomization device can be ensured. However, under the condition of strong suction or long suction, the pressure relief is slow, so that the MEMS sensor can mistakenly think that the electronic atomization device is in a low-pressure environment, the reference voltage is mistakenly updated, and the problem that the electronic atomization device enters a back-flushing prevention protection mechanism after being restarted, raised and started by negative pressure or stopped is further caused. Through setting up this air vent 70, can solve still delay the heating after stopping atomizing and avoided the problem that benchmark atmospheric pressure mistake was renewed to thereby can take out remaining atomizing medium in air current induction system and/or the negative pressure air flue more easily for the gas gets into when the suction.

Further, in the present embodiment, a gap is left between the casing 10 and the battery cell 20, and the gap may form an airflow channel 80. The air flow passage 80 may communicate with the air intake hole 111 and the second air hole 43, and may further communicate the second air hole 43 with the outside.

Further, in this embodiment, a gap may be left between the air guide structure 50 and the casing 10, and the gap may form a communication channel 90; specifically, a communication passage 90 may be formed between the sidewall 13 of the housing 10 and the bracket 60. The communication channel 90 may extend toward one end of the battery cell 20, may be in communication with the vent hole 70 and the airflow channel 80, and may be used for pressure relief or external air entering the vent hole 70. When the suction stops, the air pressure in the negative pressure air passage 53 can be output to the air flow passage 80 through the vent hole 70, the through hole 61 on the bracket and the communication passage 90, so that the pressure in the negative pressure air passage 53 is quickly released to reach the atmospheric pressure value.

Further, in the present embodiment, the power supply assembly may further include an intake passage 100; the air intake passage 100 may be provided in the housing 10, and in particular, may be formed between the housing 10 and the atomizer 2. The air inlet passage 100 can be in communication with the opening 12 and the nebulizer 2, can be used to provide air into the nebulizer 2, and in some embodiments, the air inlet passage 100 can be in communication with the negative pressure air channel 53.

The nebulizer 2 can be partially installed into the housing 10 from the opening 12, and in some embodiments, the nebulizer 2 can include a nebulizing housing 201 and a nebulizing assembly 202; the atomizing housing 201 can be used to mount the atomizing assembly 202. An air passage 2011 for outputting atomized air formed after the atomization assembly 202 atomizes the atomized medium is disposed on the atomization shell 201, and the air passage 2011 can be communicated with the air inlet channel 100 and the outside. The atomizing assembly 202 can be used to heat an atomizing medium. In some embodiments, the atomizing assembly 202 may include an atomizing core 2021, a heating element disposed on the atomizing core 2021, and a conductive connecting portion 2022 electrically connected to the heating element and the circuit board 40.

Fig. 2 shows a second embodiment of the electronic atomizer of the present invention, which differs from the first embodiment in that the communication channel 90 may be omitted, and the housing 10 is provided with a through hole 131; the through hole 131 can communicate with the vent hole 70, and in this embodiment, the through hole 131 can be disposed opposite to the vent hole 70.

Fig. 3 shows a third embodiment of the electronic atomizer of the present invention, which is different from the first embodiment in that the communication passage 90 may be omitted, and the vent hole 70 may be opened in the first air passage wall 511 of the first air guide 51 and may communicate with the air flow passage 80.

Fig. 4 shows a fourth embodiment of the electronic atomizer device according to the present invention, which is different from the first embodiment in that the communication channel 90 may be omitted, and the vent hole 70 may be opened at a side of the second air guide 52 where the second air guide wall 521 is disposed opposite to the circuit board 30, and may communicate with the air flow channel 80.

Fig. 5 shows a fifth embodiment of the electronic atomizer of the present invention, which is different from the fourth embodiment in that the air vent 70 is not limited to be provided on the air guide structure 50, and in this embodiment, the air vent 70 may be provided on the circuit board 30 and may be spaced apart from the communication hole 31.

Fig. 6 shows a sixth embodiment of the electronic atomizer of the present invention, which is different from the first embodiment in that the vent hole 70 may be disposed at the lower end of the airflow sensor 40, i.e., the distance h1 from the vent hole 70 to the opening 12 is greater than the distance h2 from the airflow sensor 40 to the opening 12. By providing the air vent 70 at the lower end of the air flow sensing device 40, the suction signal can be detected more accurately.

Fig. 7 and 8 show a seventh embodiment of the electronic atomizer of the present invention, which is different from the first embodiment in that the vent holes 70 are not limited to be disposed on the air guide structure 50, and may be disposed on the circuit board 30, the circuit board 30 may be disposed with the first pads 31, the first pads 31 may be plural, the first pads 31 may be disposed at intervals and may be used for soldering with the airflow sensor 40, and a gap between two adjacent first pads 31 may communicate with the outside and the negative pressure air duct 53, and the gap may form the vent hole 70. In this embodiment, the airflow sensing device 40 is provided with a second pad 45, the second pad 45 may be annular and located at the periphery of the first air hole 44, and when the airflow sensing device 40 is disposed on the circuit board 30, the second pad 45 may be located on the plurality of first pads 31 and may be fixedly connected to the first pads 31 by welding.

It is to be understood that the foregoing examples, while indicating the preferred embodiments of the invention, are given by way of illustration and description, and are not to be construed as limiting the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.

Claims

1. A power supply assembly is characterized by comprising a shell (10), an airflow induction device (40) accommodated in the shell (10), and a negative pressure air channel (53) arranged in the shell (10);

the air flow sensing device (40) is communicated with the negative pressure air channel (53);

the power supply assembly further comprises a vent hole (70), and the vent hole (70) is communicated with the negative pressure air channel (53) and the outside.

2. The power supply assembly according to claim 1, wherein the aperture of the vent hole (70) is 0.3-0.8 mm.

3. The power supply assembly of claim 1, wherein the airflow sensing device (40) includes a first air vent (44) in communication with a negative pressure air passageway.

4. A power supply assembly according to claim 3, wherein the vent hole (70) is located a set distance away from the first air hole (44);

the set distance is 0.6-1.2 mm.

5. The power supply assembly according to claim 1, further comprising an air guide structure (50) disposed in the housing (10) and in communication with the air flow inducing device (40);

the negative pressure air channel (53) is formed in the air guide structure (50);

the vent hole (70) is arranged on the air guide structure (50).

6. The power supply assembly according to claim 5, wherein a gap is left between the air guide structure (50) and the housing (10), and the gap is communicated with the vent hole (70) to form a communication channel (90) for pressure relief or for external air to enter.

7. The power supply assembly according to claim 5, wherein the housing (10) is formed with a through hole (131) communicating with the vent hole (70) and the outside.

8. The power supply assembly according to claim 5, further comprising an air flow channel (80) provided in the housing (10) and communicating with the air flow inducing device (40) and the outside;

the vent (70) is in communication with the airflow passage (80).

9. A power supply assembly according to claim 5, characterized in that it further comprises a support (60) for supporting the air guide structure (50);

the bracket (60) is provided with a through hole (61) which is arranged corresponding to the vent hole (70) and communicated with the vent hole (70).

10. A power supply assembly according to claim 5, characterized in that the air guide structure (50) comprises a first air guide (51) and a second air guide (52); one end of the first air guide part (51) is communicated with the air flow induction device (40); the second air guide part (52) is arranged at one end, far away from the airflow induction device (40), of the first air guide part (51), is connected with the first air guide part (51), and is arranged at a set included angle with the first air guide part (51);

the negative pressure air passage (53) is formed in the first air guide (51) and the second air guide (52);

the vent hole (70) is provided on the first air guide section (51) or on the second air guide section (52).

11. A power supply assembly according to claim 10, characterized in that the casing (10) comprises a side wall (13);

the first air guide (51) comprises a first air guide wall (511) extending from the air flow inducing means (40) towards the side wall (13);

the vent hole (70) is provided in the first air passage wall (511).

12. The power supply assembly according to claim 10, characterized in that the housing (10) comprises an opening (12) for the housing of the atomizer (2);

the second air guide (52) includes a second air passage wall (521) having one end connected to the first air guide (51) and the other end extending in the direction of the opening (12);

the vent hole (70) is provided in the second air passage wall (521).

13. The power supply assembly according to claim 1, characterized in that it comprises a battery cell (20) housed in the casing (10);

the housing (10) comprises an end wall (11) and an opening (12) arranged opposite to the end wall (11) for the atomizer (2) to be inserted;

the battery cell (20) comprises a first end arranged corresponding to the end wall (11) and a second end arranged corresponding to the opening (12);

the airflow induction device (40) is installed at the second end of the battery core (20).

14. A power supply assembly according to claim 13, characterized in that the distance of the vent hole (70) to the opening is larger than the distance of the air flow inducing device (40) to the opening (12).

15. A power supply assembly according to claim 13, characterized in that said air flow inducing means (40) further comprise a second air hole (43) communicating with the outside;

and the end wall (11) is provided with an air inlet hole (111) communicated with the second air hole (43) and the outside.

16. The power supply assembly according to claim 15, wherein a gap is left between the housing (10) and the battery cell (20), the gap forming an air flow channel (80) communicating with the air inlet hole (111) and the second air hole (43).

17. The power supply assembly of claim 13, further comprising a circuit board (30) connected to the battery cell (20); and the circuit board (30) is provided with a communication hole (31) communicated with the negative pressure air channel (53) and the airflow induction device (40).

18. A power supply assembly according to claim 17, wherein the air flow inducing means (40) comprises a first air vent (44) communicating with a negative pressure air duct;

the aperture of the communication hole (31) is larger than the aperture of the first air hole (44);

the aperture of the communicating hole (31) is 0.3-1.0 mm.

19. The power supply assembly according to claim 17, wherein the vent hole (70) is provided on the wiring board (30) and communicates with the outside.

20. A power supply assembly according to claim 17, further comprising a circuit board (30) to which the air flow induction device is mounted;

a plurality of first welding pads (31) for welding the airflow sensing device (40) are arranged on the circuit board (30); the first pads (31) are arranged at intervals, and gaps between two adjacent first pads (31) form the vent holes (70).

21. A power supply assembly according to claim 1, characterized in that the air flow sensing means (40) is a MEMS sensor.

22. An electronic atomizer device, characterized by comprising a power supply unit (1) according to any one of claims 1 to 21, and an atomizer (2) connected to the power supply unit (1); wherein the electronic atomization device further comprises an air inlet channel (100), and the air inlet channel (100) is communicated with the negative pressure air channel (53) in the power supply assembly (1).