Power supply assembly and aerosol generating device

Abstract

This application provides a power supply assembly and an aerosol generating device including the same. The power supply assembly includes: a first housing assembly; a starting assembly, where the starting assembly includes an airflow sensor and a mounting member, and the airflow sensor is accommodated in the mounting member; a start airway, with one end in communication with the outside atmosphere, and the other end in communication with the airflow sensor; an air inlet channel, with one end in communication with the outside atmosphere, and the other end in communication with the start airway; and a partition, where the partition is arranged between the air inlet channel and the start airway, the first housing assembly and / or the starting assembly and the partition jointly form a fluid channel, one end of the fluid channel is in fluid communication with the air inlet channel, and the other end of the fluid channel is in fluid communication with the start airway. In this application, the partition is arranged between the air inlet channel and the start airway to prevent a condensate or an aerosol-forming substrate from directly entering an airflow sensing element, thereby improving sensitivity of the airflow sensor and enhancing atomization efficiency of the aerosol generating device.

Description

TECHNICAL FIELD

[0001] This application relates to the field of atomization technologies, and in particular, to a power supply assembly and an aerosol generating device.BACKGROUND

[0002] An aerosol generating device usually includes an atomizer and a power supply assembly electrically connected to the atomizer. The atomizer generally includes a liquid storage cavity and an atomizing assembly. The liquid storage cavity is configured to store an aerosol-forming substrate, and the atomizing assembly is configured to heat and atomize the aerosol-forming substrate to form an aerosol that can be inhaled by a vaper. The battery assembly is configured to provide electric energy to the atomizer.

[0003] The power supply assembly further includes an airflow sensing element for sensing vaping, which is configured to sense a change in airflow to determine whether a power supply needs to be started to supply power to the atomizing assembly. However, in the existing power supply assembly, the airflow sensing element is in communication with an air inlet channel of the atomizer through a start airway. When a user is vaping, a condensate generated by the atomizer or a leaked aerosol-forming substrate easily enters the airflow sensing element through the start airway. The condensate or the aerosol-forming substrate adheres to the surface of the airflow sensing element or enters the airflow sensing element, resulting in startup insensitivity of or damage to the airflow sensing element, thereby affecting atomization by the aerosol generating device.SUMMARY

[0004] In view of this, embodiments of this application aim to provide a power supply assembly and an aerosol generating device, so as to avoid an impact of a condensate generated by an atomizer or an aerosol-forming substrate on an airflow sensing element.

[0005] Therefore, a first aspect of embodiments of this application provides a power supply assembly, including: a first housing assembly; a starting assembly, where the starting assembly includes an airflow sensor, a mounting member, and a start airway, and the airflow sensor is accommodated in the mounting member; the start airway, with one end in communication with the outside atmosphere, and the other end in communication with the airflow sensor; an air inlet channel, with one end in communication with the outside atmosphere, and the other end in communication with the start airway; and a partition, where the partition is arranged between the air inlet channel and the start airway, the first housing assembly and / or the starting assembly and the partition jointly form a fluid channel, one end of the fluid channel is in fluid communication with the air inlet channel, and the other end of the fluid channel is in fluid communication with the start airway.

[0006] In some embodiments, an end of the fluid channel that is in communication with the start airway is a first communication hole; the fluid channel includes a first fluid communication channel and a second fluid communication channel, an end of the first fluid channel that is in communication with the second fluid channel is a second communication hole, and the second communication hole is located in a side of the start airway away from the air inlet channel.

[0007] In some embodiments, a central axis of the first communication hole and a central axis of the second communication hole are located on a same plane.

[0008] In some embodiments, the partition is an annular protrusion surrounding the circumference of the start airway. In some embodiments, the mounting member is provided with a protrusion, and the start airway runs through the protrusion. In some embodiments, the protrusion is spaced apart from the inner surface of the first housing assembly.

[0009] In some embodiments, the starting assembly is arranged in the first housing assembly and divides the first housing assembly into a first part and a second part, the second part includes a battery cell, and the first part cannot be in fluid communication with the second part.

[0010] In some embodiments, the first housing assembly includes a partition structure, the partition structure is located between the first part and the second part, and the starting assembly seals the partition structure.

[0011] In some embodiments, an air hole and a liquid storage groove are further provided in an end of a battery assembly close to an atomizer assembly, a lowest point of the air hole is higher than the liquid storage groove, and the air hole is in communication with the air inlet channel.

[0012] A second aspect of embodiments of this application provides an aerosol generating device, including an atomizer assembly and the power supply assembly according to any embodiment of this application, where the atomizer assembly is electrically connected to the power supply assembly.

[0013] This application has the following beneficial effects: Different from the prior art, the power supply assembly and the aerosol generating device including the same are provided. The power supply assembly includes: a first housing assembly; a starting assembly, where the starting assembly includes an airflow sensor and a mounting member, and the airflow sensor is accommodated in the mounting member; a start airway with one end in communication with the outside atmosphere, and the other end in communication with the airflow sensor; an air inlet channel, with one end in communication with the outside atmosphere, and the other end in communication with the start airway; and a partition, where the partition is arranged between the air inlet channel and the start airway, the first housing assembly and / or the starting assembly and the partition jointly form a fluid channel, one end of the fluid channel is in fluid communication with the air inlet channel, and the other end of the fluid channel is in fluid communication with the start airway. In this application, the partition is arranged between the air inlet channel and the start airway to prevent a condensate or an aerosol-forming substrate from directly entering an airflow sensing element, thereby improving sensitivity of the airflow sensor and enhancing atomization efficiency of the aerosol generating device.BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG. 1 is a schematic structural diagram of an aerosol generating device according an embodiment of this application; FIG. 2 is a sectional view of a power supply assembly of the aerosol generating device shown in FIG. 1; FIG. 3 is a sectional view of the power supply assembly of the aerosol generating device shown in FIG. 1 from another perspective; FIG. 4 is an enlarged view of a part A of FIG. 3; FIG. 5 is a schematic structural diagram of a starting assembly of a power supply assembly; FIG. 6 is a schematic structural diagram of a mounting member of a starting assembly; and FIG. 7 is a schematic structural diagram of a battery holder according to this application.

[0015] Description of reference signs 1. Aerosol generating device; 10. Atomizer; 110. Second housing assembly; 120. Air outlet hole; 20. Power supply assembly; 210. First housing assembly; 211. Buffer groove; 212. First through-hole; 213. Battery holder; 2131: Back plate; 2132: Connection base; 2133: Liquid storage groove; 2134: Air inlet post; 2135: Mounting cavity; 2136. Air hole; 2137: First air inlet; 214. Housing; 2141: Air suction hole; 220: Starting assembly; 221: Airflow sensor; 222. Mounting member; 2221: Accommodating groove; 2222: Protrusion; 223: Start airway; 2231. First communication hole; 230. Air inlet channel; 240. Partition; 241. First partition; 242. Second partition; 250. Control circuit; 260. Fluid channel; 261. First fluid channel; 262. Second fluid channel; 2621. Second communication hole; 270. Battery cell; 280. Partition structure.DETAILED DESCRIPTION

[0016] It should be noted that embodiments of this application and technical features in the embodiments may be combined with each other without conflicts. Detailed descriptions in specific implementations should be understood as an explanation of the purpose of this application and should not be regarded as improper limitations on this application.

[0017] In the description of the embodiments of this application, it should be noted that orientation or position relationships indicated by the terms such as "upper", "lower", "top", and "bottom" are based on orientation or position relationships shown in the accompanying drawings. These orientation terms are merely for ease of description of the embodiments of this application and simplification of the description, rather than indicating or implying that the device or element referred to needs to have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. The following further describes this application in detail with reference to the accompanying drawings and specific embodiments.

[0018] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific implementations of the present invention are described in detail with reference to the accompanying drawings. In the following description, many specific details are described for a thorough understanding of the present invention. However, the present invention can be implemented in many manners different from those described herein. A person skilled in the art may make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of such features. In descriptions of the present invention, "a plurality of" means at least two, such as two or three, unless otherwise explicitly and specifically defined.

[0020] In the present invention, unless otherwise explicitly specified and limited, the terms such as "mount", "connected", "connection" and "fix" should be broadly understood, for example, the term may be a fixed connection or a detachable connection or an integrated connection; may be a mechanical connection or an electrical connection; and may be a direct connection, or may be an indirect connection through an intermediate medium, or may be internal communication between two elements or an interaction relationship between two elements. A person of ordinary skill in the art may understand specific meanings of the above terms in the present invention based on a specific situation.

[0021] In the present invention, unless otherwise explicitly specified or defined, that the first feature is located "above" or "below" the second feature may be that the first feature is in direct contact with the second feature, or the first feature is in indirect contact with the second feature through an intermediate medium. In addition, that the first feature is "above" the second feature may be that the first feature is over or obliquely above the second feature, or may merely indicate that a level height of the first feature is higher than that of the second feature. That the first feature is "below" the second feature may be that the first feature is under or obliquely below the second feature, or may merely indicate that a level height of the first feature is lower than that of the second feature.

[0022] As shown in FIG. 1, an embodiment of this application provides an atomization device 1 configured to heat and atomize an aerosol-forming substrate to generate an aerosol for a user to use. An atomization manner may be resistance heating, electromagnetic heating, infrared heating, laser heating or microwave heating, and a heat transfer manner may be convection, conduction, radiation or a combination thereof. The aerosol-forming substrate includes, but is not limited to, a drug, a nicotine-containing material, or a nicotine-free material. The aerosol-forming substrate may be in the form of a liquid, a gel, a paste, or a solid. When being a solid, the aerosol-forming substrate may be a solid in a pulverized, granulated, powdered, granular, strip or sheet form. The aerosol-forming substrate includes, but is not limited to, materials used for medical treatment, health preservation, health, and beauty. For example, the aerosol-forming substrate is a medical solution or an oil. Alternatively, the aerosol-forming substrate is a plant material, such as roots, stems, leaves, flowers, buds, and seeds of a plant. The aerosol-forming substrate may alternatively be a material that uses a plant as a main raw material and to which a corresponding aerosol-forming agent and an aroma material are added.

[0023] A type of the aerosol generating device 1 is not specifically limited in the embodiment of this application. For example, the aerosol generating device 1 may be a device needing to use an atomizer 10, such as a medical atomization device, an air humidifier, or an e-cigarette.

[0024] The electronic atomization device 1 is not limited in shape, and may be, for example, in various shapes such as a square column, an elliptic column, a racetrack column, or a cylinder.

[0025] As shown in FIG. 1, an embodiment of this application provides an aerosol generating device 1. The aerosol generating device 1 includes a power supply assembly 20 and an atomizer 10 according to any embodiment of this application. The power supply assembly 20 is electrically connected to the atomizer 10. The power supply assembly 20 is mainly configured to supply power to the atomizer 100 and control an operation, such as turn-on or turn-off, of the entire aerosol generating device 1. The atomizer 10 may be arranged above or below the power supply assembly 20 in an axial direction, and the atomizer 10 may be further arranged on the side surface of the power supply assembly 20 in a horizontal direction. The atomizer 10 and the power supply assembly 20 may be detachably connected together in a manner such as threaded connection, magnetic connection, or snap-fit connection. Certainly, in another embodiment, the atomizer 10 and the power supply assembly 20 may alternatively be combined together in a non-detachable manner.

[0026] In this embodiment, the power supply assembly includes a first housing assembly 210, and the atomizer 10 includes a second housing assembly 110. The first housing assembly 210 and the second housing assembly 110 are two separate housing assemblies. In another embodiment, the first housing assembly 210 and the second housing assembly 110 may alternatively be an integrally-formed same housing assembly.

[0027] The power supply assembly 20 provided in this embodiment includes a first housing assembly 210, a starting assembly 220, an air inlet channel 230, and a partition 240. The starting assembly 220 includes an airflow sensor 221, a mounting member 222, and a start airway 223. The airflow sensor 221 is accommodated in the mounting member 222. One end of the start airway 223 is in communication with the outside atmosphere, and the other end of the start airway 223 is in communication with the airflow sensor 221. One end of the air inlet channel 230 is in communication with the outside atmosphere, and the other end of the air inlet channel 230 is in communication with the start airway 223. The partition 240 is arranged between the air inlet channel 230 and the start airway 223, so that the air inlet channel 230 cannot be in direct fluid communication with the start airway 223.

[0028] Referring to FIG. 2, the starting assembly 220 includes an airflow sensor 221, a mounting member 222, and a start airway 223. A first side of the mounting member 222 away from the start airway 223 is provided with an accommodating groove 2221. The accommodating groove 2221 is configured to accommodate the airflow sensor 221, so that a side of the airflow sensor 221 away from the bottom of the accommodating groove 2221 is in communication with the outside atmosphere. A second side of the mounting member 222 is in communication with the start airway 223.

[0029] When a user vapes from an air outlet hole 120, an external airflow passes through the air inlet channel 230 to enter the start airway 223, and the air pressure in the start airway 223 decreases. The airflow sensor 221 senses that the air pressure decreases, so that the airflow sensor 221 generates an electrical signal indicating that the air pressure in the start airway 223 decreases, and conducts the electrical signal indicating that the air pressure decreases to a control circuit 250. The control circuit 250 determines, by using the electrical signal indicating that the air pressure decreases, that the user performs a vaping action, and controls the atomizer 10 to generate an aerosol by atomization, thereby implementing automatic start and shutdown of the aerosol generating device 1. In some embodiments, the airflow sensor 221 may further control atomization power, temperature, and other heating parameters of the atomizer according to different intensities of inhalation by the user, thereby achieving different degrees of atomization effects and improving user experience.

[0030] The inner wall of the accommodating groove 2221 is provided with a convex rib, and the accommodating groove 2221 is closely combined with the side wall of the airflow sensor 221 through the convex rib. In another optional embodiment, the starting assembly 220 further includes a first elastic member. The first elastic member is arranged between the accommodating groove 2221 and the airflow sensor 221, so that the accommodating groove 2221 and the airflow sensor 221 form a close combination. In another optional embodiment, another sealing form, such as spiral sealing or packing sealing (achieved by a material such as polytetrafluoroethylene), may alternatively be used between the accommodating groove 2221 and the airflow sensor 221. The mounting member 222 is arranged to form a seal with the airflow sensor 221, so that fluids such as an external airflow and the aerosol-forming substrate are prevented from flowing into the power supply assembly through a gap between the accommodating groove 2221 and the airflow sensor 221, thereby improving sensitivity of the airflow sensor.

[0031] It should be noted that, the fluid communication indicates that the airflow / liquid may circulate between the air inlet channel 230 and the start airway 223. The liquid may be the aerosol-forming substrate or a condensate.

[0032] Referring to FIG. 2, the partition 240 may be arranged on the starting assembly 220, or the partition 240 may be arranged on the first housing assembly 210, or the partition 240 may be of a structure independent of the starting assembly 220 and the first housing assembly 210.

[0033] The partition 240 may be a flange or may be a groove. The partition 240 is not limited in shape, and may be in the shape of a curve, such as a ring, an arc, a semi-ring, or a wave, or may be linear. The number of partitions 240 is not limited and may be one or more.

[0034] In this application, the partition 240 is arranged between the air inlet channel 230 and the start airway 223, so that the partition 240 blocks the condensate or the aerosol-forming substrate, to prevent the condensate or the aerosol-forming substrate from directly entering the airflow sensor 221 along the start airway 223, thereby improving sensitivity of the airflow sensor 221, and further improving atomization efficiency of the aerosol generating device 1.

[0035] Optionally, a liquid-absorbing member may be further arranged in the power supply assembly 20. The liquid-absorbing member may be liquid-absorbing cotton, liquid-absorbing paper, a dessicant, or the like. The liquid-absorbing member is configured to absorb a liquid that leaks into the power supply assembly 20. The liquid-absorbing member may be arranged at any position in the power supply assembly 20, for example, the starting assembly 220 or the first housing assembly 210, to avoid damage to the airflow sensor 221 caused by liquid leakage, thereby reducing a risk of failure of the airflow sensor 221, and improving the service life of the airflow sensor 221.

[0036] In some embodiments, the first housing assembly 210 and / or the starting assembly 220 and the partition 240 jointly form a fluid channel 260, one end of the fluid channel 260 is in fluid communication with the air inlet channel 230, and the other end of the fluid channel 260 is in fluid communication with the start airway 223. The partition 240 is closely attached to the inner wall of the first housing assembly 210 and / or the side surface of the starting assembly 220, so that the first housing assembly 210 and / or the starting assembly 220 and the partition 240 jointly form a fluid channel 260, and all gas passing through the air inlet channel 230 is conveyed to the start airway 223 through the fluid channel 260, thereby ensuring an inflow amount of the gas conveyed to an air guide channel 233.

[0037] Specifically, the partition 240 includes a first partition 241 and a second partition 242. The first partition 241 is an annular protrusion surrounding the circumference of the second side of the mounting member 222. The second partition 242 may be a curved / linear protrusion around the start airway 223, and may be, for example, an annular protrusion surrounding the circumference of the start airway 223, may be an arc-shaped protrusion surrounding half the circumference of the start airway 223, or may be a linear protrusion between the air inlet channel 230 and the start airway 223. The first partition 241, the second partition 242, the mounting member 222, and the first housing assembly 210 jointly form a first fluid channel 261. The second partition 242, the mounting member 222, and the first housing assembly 210 jointly form a second fluid channel 262.

[0038] In some embodiments, an end of the start airway 223 that is in communication with the fluid channel 260 is a first communication hole 2231, and an end of the first fluid channel 261 that is in communication with the second fluid channel 262 is a second communication hole 2621.

[0039] The numbers of first communication holes 2231 and second communication holes 2621 are not limited, and may be one or more.

[0040] The first communication hole 2231 and the second communication hole 2621 may be provided in one or more of the partition 240, the first housing assembly 210, and the starting assembly 220. Optionally, the first communication hole 2231 may penetrate in the side wall of the second partition 242.

[0041] The air inlet channel 230, the first fluid channel 261, the second communication hole 2621, the second fluid channel 262, the first communication hole 2231, the start airway 223, and the airflow sensor 221 are sequentially in fluid communication. The first communication hole 2231 and the second communication hole 2621 may be rectangular, circular or trapezoidal, and are not limited in shape herein, provided that the first communication hole 2231 and the second communication hole 2621 can convey the outside atmosphere to the start airway 223.

[0042] In some embodiments, the second communication hole 2621 is located in a side of the start airway 223 away from the air inlet channel 230. Therefore, a length of the fluid channel 260 is increased, thereby delaying the entry of the aerosol-forming substrate into the airflow sensor 221.

[0043] In some embodiments, in a projection of the second side of the mounting member 222, a geometrical center of the first communication hole 2231, a geometrical center of the second communication hole 2621, and a geometrical center of the air inlet channel 230 are located on a same straight line.

[0044] In some optional embodiments, the geometrical center of the first communication hole 2231, the geometrical center of the second communication hole 2621, and the geometrical center of the air inlet channel 230 are located on a same diameter of the first fluid channel 261.

[0045] Preferably, the first communication hole 2231, the second communication hole 2621, and the air inlet channel 230 are located on a straight line of the first housing assembly 210 that is parallel to a central axis, namely a straight line that is parallel to a central axis of the aerosol generating device 1, so that distances between the first communication hole 2231, the second communication hole 2621, and the air inlet channel 230 are the largest. This increases a path length of the fluid channel 260, and increases a buffer space for the aerosol-forming substrate to enter the airflow sensor 221.

[0046] In some embodiments, the mounting member 222 is provided with a protrusion 2222, and the start airway 223 passes through the protrusion 2222, so that a gap is provided between the starting assembly 220 and the first housing assembly 210. The start airway 223 is not limited in shape, and may be, for example, in various shapes such as a straight line, a curve, or a labyrinth. An end of the start airway 223 away from the airflow sensor 221 is a first communication hole 2231. The first communication hole 2231 may be provided in the top surface of the protrusion 2222, or in the side surface of the protrusion 2222. Regardless of the angle or direction in which the power supply assembly 20 is placed, the aerosol-forming substrate flowing into the power supply assembly first fills the gap between the starting assembly and the housing assembly. Only when the liquid level of the aerosol-forming substrate is higher than a lowest point of the first communication hole 2231 can the aerosol-forming substrate flow into the airflow sensor 221. This delays direct entry of the aerosol-forming substrate into the airflow sensor 22.

[0047] In some embodiments, the protrusion 2222 may be spaced apart from the inner surface of the first housing assembly 210, that is, a gap is provided between the first communication hole 2231 and the first housing assembly 210. A buffer groove 211 may be provided in a part of the first housing assembly 210 corresponding to the first communication hole 2231, or a height of the protrusion 2222 may be less than a gap distance between the first housing assembly 210 and the mounting member 222 at a position of the protrusion 2222. When the power supply assembly 20 is axially placed in a first direction, the aerosol-forming substrate flowing into the power supply assembly 20 first fills the first fluid channel 261. When the power supply assembly 20 is axially placed in a second direction, the aerosol-forming substrate flowing into the power supply assembly 20 first fills the gap between the first communication hole 2231 and the first housing assembly 210, and / or the aerosol-forming substrate flowing into the power supply assembly 20 first fills the first fluid channel 261.

[0048] In some embodiments, the protrusion 2222 may be closely attached to the inner surface of the first housing assembly 210, and the first communication hole 2231 is provided in the side surface of the protrusion 2222. Regardless of the angle or direction in which the power supply assembly 20 is placed, the aerosol-forming substrate flowing into the power supply assembly 20 first fills the gap between the starting assembly 220 and the first housing assembly 210.

[0049] In some embodiments, the starting assembly 220 is arranged in the first housing assembly 210 and divides the first housing assembly 210 into a first part and a second part, the second part includes a battery cell 270, and the first part cannot be in fluid communication with the second part.

[0050] Specifically, the second part further includes a control circuit 250. That the first part cannot be in fluid communication with the second part generally means that fluids such as the external airflow and the aerosol-forming substrate cannot flow from the first part into the second part.

[0051] In some embodiments, the first housing assembly 210 includes a partition structure 280, the partition structure 280 is located between the first part and the second part, and at least a part of the starting assembly 220 seals the partition structure 280.

[0052] Specifically, the partition structure 280 includes a first through-hole 212 provided in the first housing assembly 210. An end of the first through-hole 212 is in communication with the first part, and the other end of the first through-hole 212 is connected to the second part. At least a part of the starting assembly 220 is arranged in the first through-hole 212, and seals the first through-hole 212. A convex rib is arranged on the wall of the first through-hole 212 or the starting assembly 220. The starting assembly 220 is closely combined with the inner wall of the first through-hole 212 by using the convex rib, and the starting assembly 220 seals the first through-hole 212 by arranging the convex rib. Further, a convex rib may alternatively be directly arranged on the outer wall of the mounting member 222. The mounting member 222 is made of an elastic material. The first through-hole 212 is directly sealed by the mounting member 222. In another optional embodiment, the partition structure 280 further includes a second elastic member, and the second elastic member is arranged between the first through-hole 212 and the starting assembly 220, so that the first through-hole 212 and the starting assembly 220 form a close combination, thereby forming a sealing. The second elastic member may be made of silicone rubber, fluororubber or fluorosilicone rubber.

[0053] In another optional embodiment, another sealing form, such as spiral sealing or packing sealing (achieved by a material such as polytetrafluoroethylene), may alternatively be used between the partition structure 280 and the starting assembly 220. The partition structure 280 forms a seal with the starting assembly 220, so that the structure is simple, thereby avoiding adding another structural assembly and avoiding increasing costs. After the partition structure 280 forms the seal with the starting assembly 220, fluids such as the external airflow and the aerosol-forming substrate are prevented from flowing into the second part from the first part. This improves sensitivity of the airflow sensor, and avoids corrosion of the aerosol-forming substrate to structures in the second part, such as the battery cell and the control circuit, and further prevents the user from inhaling the aerosol mixed with a gas released by the battery cell.

[0054] Referring to FIG. 7, the first housing assembly 210 further includes a battery holder 213. The battery holder 213 includes a back plate 2131 and a connection base 2132 arranged at an end of the back plate 2131. A liquid storage groove 2133 and an air inlet post 2134 are arranged at an end of the connection base 2132 that faces away from the back plate 2131. The back plate 2131 is provided with a mounting cavity 2135. The mounting cavity 2135 is configured to mount the airflow sensor 221, the battery cell 270, the control circuit 250, and the like. The air inlet post 2134 has an air hole 2136. The air hole 2136 is in fluid communication with the liquid storage groove 2133 and the mounting cavity 2135. After the airflow sensor 221 senses a change in airflow in the liquid storage groove 2133 through the air hole 2136, the power supply assembly 20 supplies power to the atomizer 10.

[0055] It should be noted that the fluid communication indicates that the airflow / liquid may circulate between an area of the liquid storage groove 2133 and an area of the air hole 2136.

[0056] In this embodiment, the battery cell 270 and the control circuit 250 are also mounted on the back plate 2131. A housing 214 is provided with an air suction hole 2141. External air flows through the liquid storage groove 2133 through the air suction hole 2141 to flow to the atomizer 10, so as to detect, through the air hole 2136, whether the user vapes on the aerosol generating device 1.

[0057] An external airflow may be in communication with the air inlet channel 230 through a gap between the atomizer 10 and the power supply assembly 20, or the external airflow may be in communication with the air inlet channel 230 through the through-hole in the first housing assembly 210 and / or a through-hole in the second housing assembly 110.

[0058] The air hole 2136 is provided at an end of the air inlet post 2134 away from the bottom wall of the liquid storage groove 2133, so that a height of the air hole 2136 is increased, thereby preventing an accumulated liquid in the liquid storage groove 2133 from being excessive and flowing into the air hole 2136.

[0059] In an implementation, an air inlet hole in the atomizer 10 is provided roughly opposite to the center of the liquid storage groove 2133, and the position of the air inlet post 2134 is misaligned with the position of the air inlet hole of the atomizer 10 to prevent a leaked liquid from falling into the air hole 2136.

[0060] Optionally, referring to FIG. 7, the air hole 2136 may alternatively be provided in the side wall of the air inlet post 2134. This can prevent the aerosol-forming substrate on the atomizer 10 from directly dripping into the air hole 2136.

[0061] In another implementation, the battery holder 213 may alternatively be in another shape. For example, the battery holder 213 is generally prismatic or cylindrical. This is not specifically limited in this application.

[0062] With reference to FIG. 7, at least one first air inlet 2137 is provided in the side wall of the liquid storage groove 2133, and at least one first air inlet 2137 is provided in the side wall of the liquid storage groove 2133 at a position in which the air inlet post 2134 is embedded. Therefore, when flowing into the liquid storage groove 2133 through the first air inlet 2137, outside atmosphere directly passes through the air inlet post 2134, so that an airflow status can be detected more directly and efficiently through the air hole 2136.

[0063] Optionally, the air inlet post 2134 may be arranged inside the liquid storage groove 2133, that is, the air inlet post 2134 is connected to the bottom wall of the liquid storage groove 2133, and the air inlet post 2134 is spaced apart from the side wall of the liquid storage groove 2133. Alternatively, the air inlet post 2134 may be partially or entirely embedded in the side wall of the liquid storage groove 2133, so that there is a relatively long distance from the air inlet hole of the atomizer 10, thereby significantly reducing the risk that the leaked liquid enters the air hole 2136.

[0064] The air inlet hole in the atomizer 10 faces the liquid storage groove 2133, and the liquid storage groove 2133 is mainly configured to contain the leaked liquid leaking from the air inlet hole, so as to prevent the leaked liquid from flowing to devices such as the battery cell 270 and the control circuit 250. An external airflow passes through the liquid storage groove 2133 to lead to the air inlet hole of the atomizer 10. Liquids such as water vapor carried by the airflow and the leaked liquid can be condensed on the end surface of the air inlet post 2134, and even the liquid on the end surface of the battery holder 213 is guided to the air inlet post 2134, leading to a relatively high risk that the air hole 2136 is blocked.

[0065] In this embodiment, the risk that a liquid blocks the air hole 2136 can be significantly reduced, thereby avoiding a case that the airflow sensor 221 cannot sense an airflow change and the aerosol generating device 1 cannot be normally started.

[0066] It may be understood that, an end of the air inlet post 2134 away from the bottom wall of the liquid storage groove 2133 is in a chamfered design, so that the end of the air inlet post 2134 away from the bottom wall of the liquid storage groove 2133 is divided into a first end surface and a flow guide slope. Compared with a non-chamfered design, the flow guide slope can reduce a platform area of the end surface of the air inlet post 2134 away from the bottom wall of the liquid storage groove 2133, thereby reducing an amount of liquid accumulated on the air inlet post 2134. In addition, the liquid can more easily flow into the liquid storage groove 2133 through the flow guide slope, thereby reducing the risk that the liquid flows into the air hole 2136.

[0067] In the descriptions of this application, descriptions using reference terms "an embodiment", "some embodiments", "some other embodiments", "yet other embodiments", or "for example" mean that specific features, structures, materials, or characteristics described with reference to the embodiments or examples are included in at least one embodiment or example of the embodiments of this application. In this application, exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a proper manner in any one or more embodiments or examples. Additionally, without mutual contradiction, a person skilled in the art may combine different embodiments or examples described in this application, as well as features of the different embodiments or examples.

[0068] The foregoing descriptions are merely preferred embodiments of this application, and are not intended to limit this application. For a person skilled in the art, various modifications and variations may be made to this application.

Claims

1. A power supply assembly (20), comprising: a first housing assembly (210); a starting assembly (220), wherein the starting assembly (220) comprises an airflow sensor (221) and a mounting member (222), and the airflow sensor (221) is accommodated in the mounting member (222); a start airway (223), with one end in communication with the outside atmosphere, and the other end in communication with the starting assembly (220); an air inlet channel (230), with one end in communication with the outside atmosphere, and the other end in communication with the start airway (223); and a partition (240), wherein the partition (240) is arranged between the air inlet channel (230) and the start airway (223), the first housing assembly (210) and / or the starting assembly (220) and the partition (240) jointly form a fluid channel (260), one end of the fluid channel (260) is in fluid communication with the air inlet channel (230), and the other end of the fluid channel (260) is in fluid communication with the start airway (223).

2. The power supply assembly (20) of claim 1, wherein an end of the fluid channel (260) that is in communication with the start airway (223) is a first communication hole (2231); the fluid channel (260) comprises a first fluid communication channel and a second fluid communication channel, an end of the first fluid communication channel that is in communication with the second communication fluid channel is a second communication hole (2621), and the second communication hole (2621) is located in a side of the start airway (223) away from the air inlet channel (230).

3. The power supply assembly (20) of claim 2, wherein a central axis of the first communication hole (2231) and a central axis of the second communication hole (2621) are located on a same plane.

4. The power supply assembly (20) of any one of claims 1 to 3, wherein the partition (240) is an annular protrusion surrounding the circumference of the start airway (223).

5. The power supply assembly (20) of claim 1, wherein the mounting member (222) is provided with a protrusion (2222), and the start airway (223) runs through the protrusion (2222).

6. The power supply assembly (20) of claim 5, wherein the protrusion (2222) is spaced apart from the inner surface of the first housing assembly (210).

7. The power supply assembly (20) of claim 1, wherein the starting assembly (220) is arranged in the first housing assembly (210) and divides the first housing assembly (210) into a first part and a second part, the second part comprises a battery cell (270), and the first part is incapable of being in fluid communication with the second part.

8. The power supply assembly (20) of claim 7, wherein the first housing assembly (210) comprises a partition structure (280), the partition structure (280) is located between the first part and the second part, and at least a part of the starting assembly (220) seals the partition structure (280).

9. The power supply assembly (20) of claim 1, wherein an air hole (2136) and a liquid storage groove (2133) are further provided in an end of a battery assembly close to an atomizer assembly, a lowest point of the air hole (2136) is higher than the liquid storage groove (2133), and the air hole (2136) is in communication with the air inlet channel (230).

10. An aerosol generating device (1), comprising an atomizer assembly and the power supply assembly (20) of any one of claims 1 to 9, wherein the atomizer assembly is electrically connected to the power supply assembly.

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