Airflow sensor, power supply assembly and electronic atomization device

Abstract

The present application discloses an airflow sensor, a power supply assembly and an electronic atomization device, wherein the airflow sensor comprises a housing, a diaphragm and a pressure sensor, wherein the housing is provided with a first through hole and a second through hole, the diaphragm is arranged in the housing, the diaphragm divides the internal space of the housing into a first cavity and a second cavity, the first through hole is connected to the first cavity, the second through hole is connected to the second cavity, the pressure sensor is arranged in the housing and contacts the diaphragm, wherein when there is a pressure difference between the first cavity and the second cavity, the diaphragm applies pressure to the pressure sensor, and the pressure sensor is used to detect pressure. Through the above arrangement, whether to inhale is determined according to the pressure, and the aerosol generating matrix volatilizes and condenses into liquid or leaks and flows onto the diaphragm, which will not cause a change in the voltage value, thereby avoiding misjudgment of the airflow sensor due to leakage, and improving the accuracy of the airflow sensor detection.

Description

Technical Field

[0001] The present application relates to the field of atomization technology, and in particular to an airflow sensor, a power supply component and an electronic atomization device. Background Art

[0002] The airflow sensing module in the existing electronic atomization device is a capacitive airflow sensor based on microphone technology. When the diaphragm is subjected to negative pressure, it deforms and causes a change in capacitance. The chip collects the change in capacitance and triggers the suction function.

[0003] However, when the aerosol-generating matrix evaporates and condenses into liquid or leaks onto the membrane, a change in capacitance will occur, causing the chip to misjudge and thus causing the electronic atomization device to atomize. Summary of the invention

[0004] The present application mainly provides an airflow sensor, a power supply assembly and an electronic atomization device to solve the problem in the prior art that leakage causes misjudgment of the capacitive airflow sensor, causing the electronic atomization device to atomize.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide an airflow sensor, comprising: a shell, on which a first through hole and a second through hole are provided; a diaphragm, arranged in the shell; the diaphragm divides the internal space of the shell into a first cavity and a second cavity; the first through hole is connected to the first cavity; the second through hole is connected to the second cavity; a pressure sensor, arranged in the shell and in contact with the diaphragm; wherein, when there is a pressure difference between the first cavity and the second cavity, the diaphragm applies pressure to the pressure sensor; the pressure sensor is used to detect the pressure.

[0006] Wherein, the diaphragm is elastic; when there is a pressure difference between the first cavity and the second cavity, the diaphragm is deformed to apply pressure to the pressure sensor; or

[0007] The diaphragm is rigid and movably arranged in the housing; when there is a pressure difference between the first cavity and the second cavity, the diaphragm is displaced to apply pressure to the pressure sensor.

[0008] Wherein, the pressure sensor includes piezoelectric material or piezoresistive material.

[0009] Wherein, the pressure sensor comprises a piezoresistive material, and the piezoresistive material is a porous conductive elastomer.

[0010] Wherein, the airflow sensor further includes two electrodes, and the two electrodes are electrically connected to the piezoelectric material or the piezoresistive material, and are used to detect the voltage of the piezoelectric material or the resistivity of the piezoresistive material.

[0011] Wherein, the electrode is arranged on the diaphragm; the diaphragm is an insulating sheet, or the diaphragm is a conductive sheet and an insulating layer is arranged on the surface in contact with the electrode.

[0012] It also includes a controller, which is arranged in the first cavity or the second cavity; the controller is electrically connected to the two electrodes, and the controller is used to detect the voltage change of the piezoelectric material or the resistivity change of the piezoresistive material and detect the pressure applied by the diaphragm to the pressure sensor according to the voltage change of the piezoelectric material or the resistivity change of the piezoresistive material.

[0013] In order to solve the above technical problems, another technical solution adopted in the present application is: providing a power supply component, comprising an airflow sensor and a processor as described in any of the above items; the processor is electrically connected to the pressure sensor, and is used to control the operation of the electronic atomization device according to the pressure applied by the diaphragm to the pressure sensor detected by the pressure sensor.

[0014] Wherein, the airflow sensor is any of the airflow sensors described above; the processor includes a pressure sensor identification module and an atomization control module, the pressure sensor identification module is used to receive the change of the electrical parameters of the pressure sensor and detect the pressure value of the pressure sensor, and the atomization control module is used to convert the pressure value detected by the pressure sensor identification module to obtain the suction force and output different powers according to the size of the suction force;

[0015] Or, the airflow sensor is any one of the airflow sensors described above; the processor includes an atomization control module; the controller is used to receive changes in electrical parameters of the pressure sensor and detect the pressure value of the pressure sensor, and the atomization control module is used to convert the suction force according to the pressure value detected by the controller and output different powers according to the size of the suction force.

[0016] In order to solve the above technical problems, another technical solution adopted in the present application is: to provide an electronic atomization device, comprising: an atomizer for storing and atomizing an aerosol-generating matrix; the atomizer has an atomization channel; a power supply component, and the power supply component is the power supply component described in any one of the above items; the first cavity or the second cavity is connected to a suction channel, and the suction channel is connected to the atomization channel.

[0017] The beneficial effects of the present application are as follows: Different from the prior art, the present application discloses an airflow sensor, a power supply assembly and an electronic atomization device, wherein the airflow sensor comprises a housing, a diaphragm and a pressure sensor; the housing is provided with a first through hole and a second through hole; the diaphragm is arranged in the housing, and the diaphragm divides the internal space of the housing into a first cavity and a second cavity, the first through hole is connected to the first cavity, and the second through hole is connected to the second cavity; the pressure sensor is arranged in the housing and in contact with the diaphragm, wherein when there is a pressure difference between the first cavity and the second cavity, the diaphragm applies pressure to the pressure sensor, and the pressure sensor is used to detect pressure. Through the above arrangement, whether to inhale is determined according to the pressure, and the aerosol generating matrix volatilizes and condenses into liquid or leaks onto the diaphragm, which will not cause a change in the voltage value, thereby avoiding misjudgment of the airflow sensor due to leakage, and improving the accuracy of the airflow sensor detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0019] Figure 1 is a structural schematic diagram of the first embodiment of the airflow sensor provided by the present application;

[0020] Figure 2 yes Figure 1 A schematic diagram of the structure of the air flow sensor from top view;

[0021] Figure 3 yes Figure 1 A schematic diagram of the structure of the air flow sensor from top view;

[0022] Figure 4 yes Figure 1 A cross-sectional schematic diagram of the air flow sensor in a stopped state;

[0023] Figure 5 yes Figure 1 A cross-sectional schematic diagram of the airflow sensor in the working state;

[0024] Figure 6 yes Figure 1 A schematic diagram of the structure of a pressure sensor and an electrode in an airflow sensor in one embodiment;

[0025] Figure 7 yes Figure 1 A schematic diagram of the structure of another embodiment of the pressure sensor and the electrode in the air flow sensor;

[0026] Figure 8It is a structural schematic diagram of an embodiment of a power supply assembly provided by the present application;

[0027] Fig. 9 yes Figure 8 A schematic diagram of the structure of a power supply assembly in one embodiment;

[0028] Fig.10 yes Figure 8 A schematic diagram of the structure of another embodiment of the power supply assembly;

[0029] Fig.11 It is a schematic diagram of the structure of the electronic atomization device provided in this application. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] The terms "first", "second", "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0032] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] See also Figures 1 to 5 , Figure 1 is a structural schematic diagram of the first embodiment of the airflow sensor provided by the present application, Figure 2 yes Figure 1 Schematic diagram of the top view of the airflow sensor. Figure 3 yes Figure 1 Schematic diagram of the top view of the airflow sensor. Figure 4 yes Figure 1 The cross-sectional diagram of the air flow sensor in the stopped state, Figure 5 yes Figure 1 Schematic diagram of the cross section of the airflow sensor in working state.

[0034] The present application provides an airflow sensor 100, which includes a housing 10, a diaphragm 20 and a pressure sensor 30. The housing 10 is provided with a first through hole 11 and a second through hole 12, and the diaphragm 20 is arranged in the housing 10. The diaphragm 20 divides the internal space of the housing 10 into a first cavity 101 and a second cavity 102. The first through hole 11 is connected to the first cavity 101, and the second through hole 12 is connected to the second cavity 102. The pressure sensor 30 is arranged in the housing 10 and contacts the diaphragm 20. When there is a pressure difference between the first cavity 101 and the second cavity 102, the diaphragm 20 applies pressure to the pressure sensor 30, and the pressure sensor 30 is used to detect the pressure. Whether suction is judged according to the pressure, and the aerosol generation matrix volatilizes and condenses into liquid or leaks and flows onto the diaphragm 20, which will not cause a change in the voltage value, thereby avoiding misjudgment of the airflow sensor 100 due to liquid leakage, and improving the accuracy of the airflow sensor 100 detection. When the airflow sensor 100 is applied to the electronic atomization device 400, the magnitude of the suction force can be identified according to the magnitude of the pressure value, so that the electronic atomization device 400 can output different powers according to the magnitude of the suction force, thereby improving the user experience.

[0035] See also Figures 1 to 3 In this embodiment, the shell 10 is a hollow cylindrical structure, and the first through hole 11 and the second through hole 12 are respectively provided on the two end faces along the axial direction of the shell 10, and the shapes of the first through hole 11 and the second through hole 12 are both circular holes. In other embodiments, the shell 10 can also be set to any shape such as an elliptical cylinder, a cuboid, a cube, etc.; the first through hole 11 and the second through hole 12 can also be set to any shape such as a rectangle, a rhombus, a square, an ellipse, etc.; the number of the first through hole 11 and the second through hole 12 can be set to one or more, and the shape and number of the first through hole 11 and the second through hole 12 can be the same or different, which is not limited here. The shell 10 can be a battery holder for the electronic atomization device 400.

[0036] join Figure 4The diaphragm 20 is arranged inside the shell 10, and is located in the cavity formed by the shell 10. The diaphragm 20 is an elastic structural member, which is elastic and can be deformed. The diaphragm 20 can be set to any shape such as a rectangle, a rhombus, a square, an ellipse, etc. corresponding to the shape of the shell 10. In the present embodiment, the diaphragm 20 has a circular sheet structure. The diaphragm 20 divides the internal space of the shell 10 into two parts, namely the first cavity 101 and the second cavity 102, wherein the first cavity 101 is connected to the first through hole 11, and the second cavity 102 is connected to the second through hole 12.

[0037] In this embodiment, the pressure sensor 30 is disposed in the housing 10 and is disposed in contact with the diaphragm 20. The pressure sensor 30 may be located in the first cavity 101 or in the second cavity 102, that is, the pressure sensor 30 may be disposed on any surface of the diaphragm 20 located in the first cavity 101 or the second cavity 102. Since the diaphragm 20 is an elastic structural member and has elasticity, when there is a pressure difference between the first cavity 101 and the second cavity 102, the diaphragm 20 will deform, thereby applying pressure to the pressure sensor 30, and the pressure sensor 30 will detect the pressure applied to it by the deformation of the diaphragm 20.

[0038] The pressure sensor 30 may include a piezoelectric material or a piezoresistive material. In some embodiments, the pressure sensor 30 includes a piezoresistive material, and the resistivity of the piezoresistive material increases as the pressure value to which the pressure sensor 30 is subjected increases, and decreases as the pressure value to which the pressure sensor 30 is subjected decreases. In some embodiments, the pressure sensor 30 includes a piezoelectric material, and the voltage value generated by the deformation of the piezoelectric material increases as the pressure value to which the pressure sensor 30 is subjected increases, and decreases as the pressure value to which the pressure sensor 30 is subjected decreases. In this embodiment, the pressure sensor 30 is a piezoresistive material, and this is used as an example for a specific description.

[0039] In this embodiment, the pressure sensor 30 includes a piezoresistive material, which is a porous conductive elastomer. It can be understood that the porous elastic material can make the pressure sensor 30 more likely to undergo elastic deformation when subjected to pressure, so that the pressure sensor 30 can detect the pressure value more accurately and with higher detection accuracy. Specifically, the resistivity of the porous conductive elastomer will increase as the pressure value to which the pressure sensor 30 is subjected increases. By detecting the change in the resistivity of the porous conductive elastomer, the pressure value to which the pressure sensor 30 is subjected can be obtained, and the magnitude of the suction force can be identified by the magnitude of the pressure value.

[0040] See also Figure 6 , Figure 6 yes Figure 1 A schematic diagram of the structure of a pressure sensor and an electrode in an air flow sensor in one embodiment, Figure 7 yes Figure 1A schematic diagram of the structure of another embodiment of the pressure sensor and electrodes in the air flow sensor.

[0041] The airflow sensor 100 further includes two electrodes 40 , which are electrically connected to the porous conductive elastomer of the pressure sensor 30 , so as to detect the resistivity of the porous conductive elastomer, and further detect the pressure value of the porous conductive elastomer.

[0042] In one embodiment, two electrodes 40 are disposed on the diaphragm 20, and the two electrodes 40 are spaced apart from each other, and the diaphragm 20 is insulated from the two electrodes 40. Specifically, the diaphragm 20 can be made of an insulating material, for example, the diaphragm 20 can be made of an insulating material such as plastic, and the two electrodes 40 are spaced apart on the same surface of the diaphragm 20, and are electrically connected to the pressure sensor 30; or, the diaphragm 20 can also be made of a conductive material, for example, the diaphragm 20 can be made of a material such as metal, an insulating layer is disposed on the diaphragm 20, and the two electrodes 40 are disposed on the insulating layer of the diaphragm 20, so as to achieve an insulated contact between the diaphragm 20 and the electrodes 40, and the pressure sensor 30 and the electrodes 40 are electrically connected.

[0043] Alternatively, if Figure 6 As shown, the pressure sensor 30 can be arranged on the side of the two electrodes 40 away from the diaphragm 20, and the electrical connection between the electrode 40 and the porous conductive elastomer is achieved by direct contact between the pressure sensor 30 and the electrode 40, and the connection method is relatively simple.

[0044] Alternatively, if Figure 7 As shown, the pressure sensor 30 can be disposed between two electrodes 40 on the diaphragm 20 , and electrical connection between the porous conductive elastomer and the electrodes 40 can be achieved by connecting wires or welding between the pressure sensor 30 and the electrodes 40 .

[0045] In one embodiment, two electrodes 40 are located on the pressure sensor 30 to achieve electrical connection between the electrodes 40 and the porous conductive elastomer, thereby detecting the resistivity of the porous conductive elastomer.

[0046] In this embodiment, the airflow sensor 100 further includes a bracket 50, which is located inside the housing 10 and is used to fix the periphery of the diaphragm 20. Specifically, the bracket 50 is annular, connected to the inner surface of the side wall of the housing 10, and is in close contact with the inner side wall of the housing 10. A groove is provided on the side wall of the bracket 50, and the groove is an annular groove along the circumference of the bracket 50. The structure and size of the groove are matched with the periphery of the diaphragm 20. It can be understood that the bracket 50 is an optional structure, and a card slot can be provided on the inner wall surface of the side wall of the housing 10, and the diaphragm 20 can be directly installed in the card slot on the inner wall surface of the housing 10, so that the diaphragm 20 is fixed inside the housing 10, and there is no need to provide a separate bracket 50.

[0047] The airflow sensor 100 further includes a controller 60, which can be disposed in the first cavity 101 or in the second cavity 102. The controller 60 is electrically connected to the pressure sensor 30 to receive the pressure value detected by the pressure sensor 30. When there is a pressure difference between the first cavity 101 and the second cavity 102, the diaphragm 20 undergoes elastic deformation to apply pressure to the pressure sensor 30, and the resistivity of the porous elastic conductor changes after being subjected to the pressure. The controller 60 applies a voltage or current to the pressure sensor 30, and detects the magnitude of the pressure applied to the pressure sensor 30 by detecting the magnitude of the resistivity of the porous conductive elastic body of the pressure sensor 30.

[0048] The controller 60 can be disposed in the same cavity as the pressure sensor 30, or in different cavities. When the controller 60 and the pressure sensor 30 are disposed in the same cavity, the controller 60 and the pressure sensor 30 can be directly electrically connected, and the connection method is relatively simple.

[0049] When the controller 60 and the pressure sensor 30 are respectively arranged in different cavities, it is necessary to route between the first cavity 101 and the second cavity 102 to electrically connect the controller 60 and the pressure sensor 30. Specifically, a wiring slot can be opened on the housing 10 and / or the bracket 50, and the two ends of the wiring slot are respectively connected to the first cavity 101 and the second cavity 102, and an electrical connection line is arranged in the wiring slot, and the two ends of the electrical connection line are respectively connected to the controller 60 and the pressure sensor 30 located in different cavities. For example, in one embodiment, wiring is arranged on the side wall of the housing 10 and the bottom wall of the second cavity 102, and the controller 60 is electrically connected to the wiring of the bottom wall of the second cavity 102; wirings connected to the two electrodes 40 are arranged on the surface of the diaphragm 20, and the wirings extend to the side walls of the diaphragm 20 respectively; when the diaphragm 20 is arranged in the housing 10, the wiring of the side wall of the diaphragm 20 is electrically connected to the wiring of the side wall of the housing 10, so that the controller 60 and the pressure sensor 30 are electrically connected.

[0050] In one embodiment, the present application also provides another airflow sensor 100. Figure 1 The structure of the airflow sensor 100 shown is basically the same, except that the diaphragm 20 in the airflow sensor 100 in this embodiment is rigid and not prone to elastic deformation. The arrangement of the remaining structures is the same as that in the first embodiment of the airflow sensor 100 and will not be repeated here.

[0051] In this embodiment, the diaphragm 20 is rigid and movably arranged inside the shell 10. When there is a pressure difference between the first cavity 101 and the second cavity 102, the diaphragm 20 slides in the shell 10, and the diaphragm 20 is displaced to apply pressure to the pressure sensor 30. The pressure sensor 30 detects the magnitude of the pressure value applied to it by the displacement of the diaphragm 20.

[0052] Specifically, a bracket 50 is provided inside the housing 10. The bracket 50 is an elastic structural member with elasticity, and it will deform elastically when subjected to pressure. A groove is provided on the side wall of the bracket 50. The groove is an annular groove along the circumference of the bracket 50. The structure and size of the groove are matched with the periphery of the diaphragm 20. The diaphragm 20 divides the internal space of the housing 10 into a first cavity 101 and a second cavity 102. When there is a pressure difference between the first cavity 101 and the second cavity 102, the bracket 50 will deform, causing the diaphragm 20 installed on the bracket 50 to displace. The displacement of the diaphragm 20 will apply pressure to the pressure sensor 30. The pressure sensor 30 is used to detect the pressure value applied to it by the diaphragm 20.

[0053] When the airflow sensor 100 is an integral vertical structure, a slide groove is provided on the side wall of the housing 10, and the diaphragm 20 is installed in the slide groove of the housing 10. When there is a pressure difference between the first cavity 101 and the second cavity 102, the diaphragm 20 moves in the slide groove of the housing 10. The movement of the diaphragm 20 applies pressure to the pressure sensor 30, and the pressure sensor 30 detects the pressure value applied by the diaphragm 20. It should be noted that the vertical structure refers to the vertical structure of the housing 10. Figure 1 The airflow sensor 100 shown is rotated 90 degrees for use. At this time, the gravity of the diaphragm 20 will not affect its sliding in the slide groove, thereby ensuring the detection accuracy of the pressure sensor 30.

[0054] See also Figures 8 to 10 , Figure 8 is a schematic diagram of the structure of an embodiment of a power supply assembly provided by the present application, Fig. 9 yes Figure 8 A schematic diagram of the structure of a power supply assembly in one embodiment, Fig.10 yes Figure 8 A schematic structural diagram of another embodiment of the power supply assembly.

[0055] See also Figure 8 The present application provides a power supply assembly 200, which is used in an electronic atomization device 400. The power supply assembly 200 includes an airflow sensor 100 in any embodiment of the airflow sensor 100 provided in the present application and a processor 210. The processor 210 is electrically connected to the pressure sensor 30, and is used to control the operation of the electronic atomization device 400 according to the pressure applied by the diaphragm 20 to the pressure sensor 30 detected by the pressure sensor 30.

[0056] In one embodiment, if Fig. 9 As shown, the airflow sensor 100 in the power assembly 200 does not include the controller 60, and the remaining structures are the same as those in the first embodiment of the airflow sensor 100, and will not be described in detail. The power assembly 200 also includes a processor 210, which is electrically connected to the pressure sensor 30 to receive the pressure value applied to the pressure sensor 30 by the deformation of the diaphragm 20 detected by the pressure sensor 30. The user's suction action causes negative pressure to be generated in the first cavity 101 and the second cavity 102. The diaphragm 20 is deformed due to the negative pressure, and pressure is applied to the pressure sensor 30. The processor 210 detects the pressure it is subjected to through the change in the resistivity of the pressure sensor 30. The processor 210 converts the received pressure value into a suction force, and controls the electronic atomization device 400 according to the size of the converted suction force.

[0057] Specifically, the processor 210 includes a pressure sensor identification module 211 and an atomization control module 212. The pressure sensor identification module 211 is used to receive the resistivity change of the pressure sensor 30 and detect the pressure value of the pressure sensor 30. The atomization control module 212 is used to convert the suction force according to the pressure value detected by the pressure sensor identification module 211 and control the power supply component 200 to output different powers according to the suction force, so as to control the atomization process of the electronic atomization device 400.

[0058] Optionally, the processor 210 may further include a plurality of modules such as a lithium battery charging management module 213, a battery voltage detection module 214, and an LED driving module 215 for indicating a user's puffing function.

[0059] In one embodiment, if Fig.10 As shown, Fig.10 The airflow sensor 100 in the power supply assembly 200 includes a controller 60, and the processor 210 does not include a pressure sensor identification module 211. Fig.10 The rest of the structure of the power supply assembly 200 is the same as Fig. 9 At this time, the controller 60 is used to receive the resistivity change of the pressure sensor 30 and detect the pressure value applied to the pressure sensor 30 by the deformation of the diaphragm 20, and the atomization control module 212 in the processor 210 is used to convert the pressure value received by the controller 60 into the suction force generated by the user's inhalation, and control the operation of the electronic atomization device 400 according to the size of the converted suction force.

[0060] Optionally, the processor 210 further includes a plurality of modules such as a lithium battery charging management module 213, a battery voltage detection module 214, and an LED driving module 215 for indicating a user's puffing function.

[0061] See also Fig.11 , Fig.11 It is a schematic diagram of the structure of the electronic atomization device provided in this application.

[0062] The present application also provides an electronic atomization device 400, which is used to heat an atomized aerosol-generating substrate to generate an aerosol for a user to inhale.

[0063] Specifically, the electronic atomization device 400 includes an atomizer 300 and a power supply assembly 200, and the atomizer 300 and the power supply assembly 200 are electrically connected. The atomizer 300 is used to store and heat the atomized aerosol generating substrate, and an atomization channel is provided in the atomizer 300. The aerosol generating substrate is atomized in the atomization channel to generate aerosol, and the user inhales the aerosol through the port of the atomization channel.

[0064] The power supply assembly 200 includes any one of the power supply assembly 200 embodiments provided in the present application, and is used to provide energy for the atomizer 300 and control the electronic atomization device 400 to operate.

[0065] Specifically, in this embodiment, in the airflow sensor 100 in the power assembly 200, the second through hole 12 is used to connect the second cavity 102 with the external air, so that the pressure in the second cavity 102 is consistent with the atmospheric pressure. The first through hole 11 is used to connect the first cavity 101 and the suction channel, and the suction channel is connected to the atomization channel. When the user draws air at the port of the atomization channel, the pressure in the first cavity 101 connected to the suction channel changes, thereby causing a pressure difference between the first cavity 101 and the second cavity 102. The diaphragm 20 is deformed, and pressure is applied to the pressure sensor 30. The pressure sensor 30 detects the pressure value and converts the pressure value into a suction force generated by the user's suction. The power output of the power supply assembly 200 to the atomizer 300 is controlled according to the suction force, so as to control the electronic atomization device 400 to work, so that the electronic atomization device 400 has higher working efficiency and better performance. At the same time, when the aerosol-generated matrix evaporates and condenses into liquid or leaks onto the diaphragm 20, it will not cause a change in the voltage value, thereby avoiding misjudgment of the airflow sensor 100 due to leakage, thereby improving the accuracy of the airflow sensor 100 detection.

[0066] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An airflow sensor, characterized in that: include: A housing, wherein a first through hole and a second through hole are provided on the housing; A diaphragm is disposed in the housing; the diaphragm divides the internal space of the housing into a first cavity and a second cavity; the first through hole is connected to the first cavity; the second through hole is connected to the second cavity; a pressure sensor, disposed in the housing and in contact with the diaphragm; wherein when there is a pressure difference between the first cavity and the second cavity, the diaphragm applies pressure to the pressure sensor; and the pressure sensor is used to detect the pressure; Wherein, the diaphragm is elastic; when there is a pressure difference between the first cavity and the second cavity, the diaphragm is deformed to apply pressure to the pressure sensor; or The diaphragm is rigid and movably arranged in the housing; when there is a pressure difference between the first cavity and the second cavity, the diaphragm is displaced to apply pressure to the pressure sensor.

2. The airflow sensor according to claim 1, characterized in that: The pressure sensor includes a piezoelectric material or a piezoresistive material.

3. The airflow sensor according to claim 2, characterized in that: The pressure sensor includes a piezoresistive material, which is a porous conductive elastomer.

4. The airflow sensor according to claim 2, characterized in that: The airflow sensor further includes two electrodes, which are electrically connected to the piezoelectric material or the piezoresistive material and are used to detect the voltage of the piezoelectric material or the resistivity of the piezoresistive material.

5. The airflow sensor according to claim 4, characterized in that: The electrodes are arranged on the diaphragm; the diaphragm is an insulating sheet, or the diaphragm is a conductive sheet and an insulating layer is arranged on the surface in contact with the electrodes.

6. The airflow sensor according to claim 4, characterized in that: It also includes a controller, which is arranged in the first cavity or the second cavity; the controller is electrically connected to the two electrodes, and the controller is used to detect the voltage change of the piezoelectric material or the resistivity change of the piezoresistive material and detect the pressure applied by the diaphragm to the pressure sensor based on the voltage change of the piezoelectric material or the resistivity change of the piezoresistive material.

7. A power supply assembly for an electronic atomization device, characterized in that: include: The airflow sensor and processor according to any one of claims 1 to 6; The processor is electrically connected to the pressure sensor, and is used to control the operation of the electronic atomization device according to the pressure applied by the diaphragm to the pressure sensor detected by the pressure sensor.

8. The power supply assembly according to claim 7, characterized in that: The airflow sensor is the airflow sensor according to any one of claims 1 to 5; the processor comprises a pressure sensor identification module and an atomization control module, the pressure sensor identification module is used to receive the change of the electrical parameters of the pressure sensor and detect the pressure value of the pressure sensor, the atomization control module is used to convert the pressure value detected by the pressure sensor identification module to obtain the suction force and output different powers according to the size of the suction force; Or, the airflow sensor is the airflow sensor according to claim 6; the processor includes an atomization control module; the controller is used to receive changes in electrical parameters of the pressure sensor and detect the pressure value of the pressure sensor, and the atomization control module is used to convert the suction force according to the pressure value detected by the controller and output different powers according to the size of the suction force.

9. An electronic atomization device, characterized in that: include: a nebulizer for storing and nebulizing the aerosol-generating matrix; The atomizer has an atomization channel; A power supply assembly, wherein the power supply assembly is the power supply assembly according to claim 7 or 8; The first cavity or the second cavity is communicated with a suction channel, and the suction channel is communicated with the atomization channel.

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