Battery rod and aerosol-generating device

Abstract

The utility model provides a battery rod and an aerosol generating device. The battery rod comprises a first shell; the battery support is arranged in the first shell, a receiving cavity is defined by the battery support and the first shell, a collecting cavity is defined in the battery support, a first liquid drainage hole is formed in the end, facing the receiving cavity, of the battery support, and the first liquid drainage hole guides the liquid matrix leaked into the receiving cavity from the smoke cartridge assembly to the collecting cavity; the airflow sensor is arranged in the battery bracket; the first sealing element is kept on the battery bracket and is arranged at one end, facing the receiving cavity, of the battery bracket; wherein the first sealing piece is provided with an air guide part, a first air inlet hole is limited in the air guide part, the first air inlet hole is communicated with one side of the airflow sensor, and the air guide part protrudes towards the receiving cavity, so that the port of the first air inlet hole is higher than the first liquid discharge hole; the liquid matrix leaked by the smoke cartridge assembly or the condensate of the aerosol cannot enter the first air inlet hole to corrode the airflow sensor or make the airflow sensor mistakenly started.

Description

Technical Field

[0001] This application relates to the field of aerosol generation technology, and in particular to aerosol generation apparatus and battery rod. Background Technology

[0002] The battery rod of the aerosol generator includes an airflow sensor. The airflow sensor can sense the airflow and trigger the controller on the circuit board to start the aerosol generator. However, in the past, the sensing air passage of the airflow sensor was usually located above the airflow sensor. The sensing air passage was short and straight. When the cartridge component leaked liquid or the aerosol generated by the cartridge component condensed, the liquid matrix could seep directly into the airflow sensor through the sensing air passage, causing corrosion of the airflow sensor or causing the airflow sensor to be falsely activated. Utility Model Content

[0003] To address the issue of leakage from the cartridge assembly or condensation of aerosols from the cartridge assembly entering the airflow sensor, causing corrosion or false activation of the airflow sensor.

[0004] One embodiment of this application provides a battery rod for use in combination with a cigarette cartridge assembly, comprising:

[0005] First shell;

[0006] A battery holder is disposed within the first housing and defines a receiving cavity for accommodating the cartridge assembly. The battery holder defines a collection cavity for collecting liquid matrix from the cartridge assembly. The battery holder is provided with a first drain hole at one end facing the receiving cavity, which connects the receiving cavity and the collection cavity. The first drain hole guides the liquid matrix leaking from the cartridge assembly into the receiving cavity to the collection cavity.

[0007] An airflow sensor, disposed within the battery holder, is used to sense changes in airflow within the cartridge assembly;

[0008] A first sealing element is held on the battery holder and disposed at one end of the battery holder facing the receiving cavity;

[0009] The first sealing element has an air guide portion, which defines a first air inlet. The first air inlet is connected to one side of the airflow sensor. The air guide portion protrudes toward the receiving cavity, thereby making the port of the first air inlet higher than the first drain hole.

[0010] One embodiment of this application provides a battery rod, wherein the first seal and the battery bracket together define a first air passage, and the first air passage is connected to the first air inlet.

[0011] One embodiment of this application provides a battery rod, the battery holder defining a second air inlet, the second air inlet communicating with a first air passage, and the longitudinal projection of the second air inlet and the first air inlet being offset.

[0012] One embodiment of this application provides a battery rod, wherein a collecting groove is provided at the position of the first seal opposite to the second air inlet, and the first air passage and the second air inlet intersect at the collecting groove.

[0013] One embodiment of this application provides a battery rod, the battery rod further comprising a second seal, the airflow sensor comprising a first surface and a second surface disposed opposite to each other, the second seal being located between the first surface and the battery bracket, the first surface and the second air inlet being in communication.

[0014] One embodiment of this application provides a battery rod, the battery bracket including a first groove, and a second sealing member including a first sealing portion and a second sealing portion, the first sealing portion being located between the first surface and the battery bracket, and the second sealing portion being disposed in the first groove.

[0015] One embodiment of this application provides a battery rod, wherein the first sealing portion is provided with a first through hole, and the first through hole is connected to the first surface.

[0016] One embodiment of this application provides a battery rod, wherein the second sealing portion has a second groove, one end of the second groove is connected to the second air inlet, and the other end of the second groove is connected to the first through hole.

[0017] One embodiment of this application provides a battery rod, wherein the side wall of the battery holder is provided with a second drain hole communicating with the collection chamber for draining liquid matrix to the outside.

[0018] One embodiment of this application provides a battery rod, which further includes a switch assembly for opening or closing the second drain hole.

[0019] One embodiment of this application provides a battery rod, wherein the second drain hole is configured as an air inlet and supplies the cartridge assembly through the first drain hole.

[0020] One embodiment of this application provides a battery rod, wherein the side wall of the battery bracket is provided with a pressure relief hole communicating with the collection chamber, and the pressure relief hole is higher than the second drain hole.

[0021] One embodiment of this application provides a battery rod, wherein the first seal covers one end of the battery holder facing the receiving cavity and avoids the first drain hole.

[0022] One embodiment of this application provides an aerosol generating device, including a cartridge assembly and the aforementioned battery rod, wherein at least a portion of the cartridge assembly can be held in the receiving cavity, and the battery rod provides electrical energy to the cartridge assembly.

[0023] The first air inlet of the battery rod in this application is higher than the first drain hole, so that the liquid matrix or aerosol condensate leaking from the cartridge assembly will not enter the first air inlet and corrode the airflow sensor or cause the airflow sensor to be falsely activated, and the liquid matrix or aerosol condensate leaking from the cartridge assembly can enter the first drain hole and be collected in the collection chamber. Attached Figure Description

[0024] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0025] Figure 1 This is a schematic diagram of a battery rod according to one embodiment of this application;

[0026] Figure 2 This is a schematic diagram of a battery rod according to one embodiment of this application;

[0027] Figure 3 This is a schematic diagram of a battery rod according to one embodiment of this application;

[0028] Figure 4 This is a schematic diagram of a battery rod according to one embodiment of this application;

[0029] Figure 5 This is a schematic diagram of a battery holder according to one embodiment of this application;

[0030] Figure 6 This is a schematic diagram of a battery holder according to one embodiment of this application;

[0031] Figure 7 This is a schematic diagram of a battery holder according to one embodiment of this application;

[0032] Figure 8 This is a schematic diagram of a battery holder according to one embodiment of this application;

[0033] Figure 9 This is a schematic diagram of a first sealing element according to an embodiment of this application;

[0034] Figure 10 This is a schematic diagram of a first sealing element according to an embodiment of this application;

[0035] Figure 11 This is a schematic diagram of a second seal according to an embodiment of this application;

[0036] Figure 12 This is a schematic diagram of a circuit board and an airflow sensor according to one embodiment of this application;

[0037] Figure 13 This is a schematic diagram of the first housing according to an embodiment of this application;

[0038] Figure 14 This is a schematic diagram of a cigarette cartridge assembly according to an embodiment of this application;

[0039] Figure 15 This is a schematic diagram of a cigarette cartridge assembly according to an embodiment of this application;

[0040] Figure 16 This is a schematic diagram of a cigarette cartridge assembly according to an embodiment of this application;

[0041] Figure 17 This is a schematic diagram of an aerosol generating apparatus according to an embodiment of this application.

[0042] In the picture:

[0043] 10. Aerosol generating device;

[0044] 1. Battery pole;

[0045] 11. First housing; 111. Second through hole; 112. Third through hole; 113. Cover; 114. First snap-fit ​​component; 115. Receiving cavity

[0046] 12. Battery bracket; 121. First drain hole; 122. Second air inlet; 123. Circuit board housing cavity; 124. Battery housing cavity; 125. Collection cavity; 126. Second drain hole; 127. Switch assembly; 128. Pressure relief hole; 129. First groove; 1210. Fourth through hole; 1211. Third groove; 1212. Second snap-fit ​​component; 1213. Fourth groove; 1214. Third seal;

[0047] 13. Circuit board; 131. Fifth through hole;

[0048] 14. Airflow sensor; 141. First side; 142. Second side;

[0049] 15. First seal; 151. First air inlet; 152. First air passage; 153. Collection groove; 154. Air guide section;

[0050] 16. Second sealing element; 161. First sealing part; 1611. First through hole; 162. Second sealing part; 1621. Second groove;

[0051] 17. Battery;

[0052] 18. Electrode;

[0053] 19. First magnetic component;

[0054] 2. E-cigarette cartridge assembly;

[0055] 21. Second housing; 211. Liquid storage cavity; 212. Positioning protrusion; 2121. First surface; 2122. Second surface; 2123. Third surface;

[0056] 22. Base; 221. Third air inlet; 222. Receiving groove; 223. Liquid suction component; 224. Positioning groove;

[0057] 23. Second magnetic component;

[0058] 24. Atomizing component. Detailed Implementation

[0059] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0060] The terms "first," "second," and "third" used in this application are for descriptive purposes only and should not be construed as indicating or implying the quantity or order of the indicated technical features relative to their importance. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship or movement of the components in a specific orientation (as shown in the accompanying drawings). If the specific orientation changes, the directional indication will also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0061] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0062] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be intervening elements. When an element is referred to as being "connected to" another element, it can be directly connected to the other element, or there may be one or more intervening elements. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0063] One embodiment of this application provides a battery rod 1 for use in combination with a tobacco cartridge assembly, including a first housing 11, a battery holder 12, an airflow sensor 14, and a first seal 15. The battery holder 12 is disposed within the first housing 11 and defines a receiving cavity 115 for accommodating the tobacco cartridge assembly 2. The battery holder 12 defines a collection cavity 125 for collecting liquid matrix from the tobacco cartridge assembly 2. A first drain hole 121 communicating between the receiving cavity 115 and the collection cavity 125 is provided at one end of the battery holder 12 facing the receiving cavity 115. The first drain hole 121 guides the liquid matrix leaking from the tobacco cartridge assembly 2 into the receiving cavity 115 to the collection cavity 125. The airflow sensor 14 is disposed within the battery holder 12 for sensing changes in airflow within the tobacco cartridge assembly 2. The first seal 15 is held on the battery holder 12 and disposed at the end of the battery holder 12 facing the receiving cavity 115. The first sealing member 15 has an air guide portion 154, which defines a first air inlet 151. The first air inlet 151 is connected to one side of the airflow sensor 14. The air guide portion 154 protrudes toward the receiving cavity 115, so that the port of the first air inlet 151 is higher than the first drain hole 121.

[0064] In this application, the port of the first air inlet 151 of the battery rod 1 is higher than the first drain hole 121, so that the liquid matrix or aerosol condensate leaking from the cartridge assembly 2 will not enter the first air inlet 151 to corrode the airflow sensor 14 or cause the airflow sensor 14 to be falsely activated, and the liquid matrix or aerosol condensate leaking from the cartridge assembly 2 can enter the first drain hole 121 and be collected in the collection chamber 125.

[0065] In one embodiment of this application, the battery rod 1 includes a circuit board 13 disposed within the battery holder 12, and an airflow sensor 14 is electrically connected to the circuit board 13. In another embodiment of this application, the airflow smoking device 14 may be disposed on the circuit board.

[0066] In one embodiment of this application, the liquid matrix may comprise a liquid containing tobacco-containing substances with volatile tobacco aroma components, or it may be a liquid containing non-tobacco substances. The liquid matrix may comprise water, pharmaceutical solutions, solvents, ethanol, plant extracts, fragrances, flavorings, or vitamin mixtures, etc. Fragrances may include menthol, peppermint, spearmint oil, various fruit flavoring components, etc., but are not limited to these. Flavorings contain ingredients that can provide the user with various fragrances or flavors. Vitamin mixtures may be mixtures containing at least one of vitamin A, vitamin B, vitamin C, and vitamin E, but are not limited to these. Based on the different properties of the liquid matrix, aerosol matrix reservoirs can be used in different fields, such as medical and electronic aerosol atomization.

[0067] In one embodiment of this application, the first seal 151 and the battery holder 12 together define a first air passage 152, which is connected to the first air inlet 151. In another embodiment of this application, the first air passage 152 extends in a direction perpendicular to the axis of the battery rod 1.

[0068] In one embodiment of this application, the first seal 151 may define a first air passage, and the first air passage and the first air inlet 151 are connected. In one embodiment of this application, the extending direction of the first air passage and the extending direction of the first air inlet 151 are not on the same straight line.

[0069] In one embodiment of this application, the battery holder 12 defines a second air inlet 122, which is connected to a first air passage 152. In another embodiment of this application, the first air inlet 151, the first air passage 152, and the second air inlet 122 together define a sensing air passage for the airflow sensor 14. The first air inlet 151, the first air passage 152, and the second air inlet 122 are connected to the first surface 141 of the airflow sensor 14, allowing the first surface 141 of the airflow sensor 14 to sense changes in airflow near the first air inlet 151. However, the first air inlet 151 and the second air inlet 122 are not on the same straight line, making it difficult for liquid matrix or condensate around the first air inlet 151 to enter the second air inlet 122. Furthermore, when liquid matrix or condensate enters from the first air inlet 151, the air pressure in the first air passage 152 decreases, thereby preventing the liquid matrix or condensate from entering the first air inlet 151. In one embodiment of this application, the first air inlet 151, the first air passage 152, and the second air inlet 122 form an S-shape.

[0070] In one embodiment of this application, an airflow sensor 14 is disposed on a circuit board 13, with a first surface 141 facing the circuit board 13 and a second surface 142 facing away from the first surface 141. The circuit board 13 is provided with a fifth through hole 131, and the first surface 141 is connected to the second air inlet 122 through the fifth through hole 131.

[0071] In one embodiment of this application, the longitudinal projections of the second air inlet 122 and the first air inlet 151 are offset. In another embodiment of this application, the extending direction of the second air inlet 122 and the extending direction of the first air inlet 151 are not on the same straight line.

[0072] In one embodiment of this application, a collecting groove 153 is provided opposite to the second air inlet 122, and the first air passage 152 and the second air inlet 122 intersect at the collecting groove 153. In one embodiment of this application, the opening of the collecting groove 153 is circular.

[0073] In one embodiment of this application, the battery rod 1 further includes a second seal 16 located between the first surface 141 of the airflow sensor 14 and the battery holder 12, with the first surface 141 and the second air inlet 122 being interconnected. The second seal 16 seals the airflow sensor 14 and the battery holder 12, while allowing the first surface 141 and the second air inlet 122 of the airflow sensor 14 to be interconnected.

[0074] In one embodiment of this application, the battery holder 12 includes a circuit board receiving cavity 123 and a battery receiving cavity 124. The circuit board receiving cavity 123 is used to receive a circuit board 13, and the battery receiving cavity 124 is used to receive a battery 17.

[0075] In one embodiment of this application, the battery holder 12 includes a first groove 129, and the second seal 16 includes a first sealing portion 161 and a second sealing portion 162. The first sealing portion 161 is located between the first surface 141 and the battery holder 12, and the second sealing portion 162 is disposed in the first groove 129.

[0076] In one embodiment of this application, the first sealing portion 161 is provided with a first through hole 1611, which communicates with the first surface 141. In one embodiment of this application, the second sealing portion 162 is formed with a second groove 1621, one end of which communicates with the second air inlet 122, and the other end of which communicates with the first through hole 1611. In one embodiment of this application, the opening of the second groove 1621 faces the second air inlet 122.

[0077] In one embodiment of this application, the battery holder 12 defines a collection cavity 125, which communicates with a first drain hole 121. The collection cavity 125 is used to collect condensate from a liquid matrix or aerosol. In another embodiment of this application, a second drain hole 126 communicating with the collection cavity 125 is provided on the side wall of the collection cavity 125. When a large amount of liquid matrix or condensate accumulates in the collection cavity 125, the liquid matrix or condensate can be discharged from the second drain hole 126. In another embodiment of this application, the battery rod 1 further includes a switch assembly 127, which is disposed in the second drain hole 126 and can open or close the second drain hole 126. In another embodiment of this application, a second through hole 111 is provided on the first housing 11, through which the switch assembly 127 is exposed to the first housing 11.

[0078] In one embodiment of this application, the side wall of the battery holder 12 is provided with a pressure relief hole 128 communicating with the collection chamber 125. When the liquid matrix or condensate enters the collection chamber 125 from the first drain hole 121, the air pressure in the collection chamber 125 increases, and the air in the collection chamber 125 can be discharged through the pressure relief hole 128, facilitating the smooth entry of the liquid matrix or condensate into the first drain hole 121. In one embodiment of this application, the first housing 11 is provided with a third through hole 112, and the pressure relief hole 128 communicates with the external air through the third through hole 112. In one embodiment of this application, the pressure relief hole 128 is higher than the second drain hole 126.

[0079] In one embodiment of this application, the second drain hole 126 is configured as an air inlet and is supplied to the cartridge assembly 2 through the first drain hole 121.

[0080] In one embodiment of this application, the first seal 15 covers the end of the battery holder 12 facing the receiving cavity 115 and avoids the first drain hole 121.

[0081] In one embodiment of this application, the battery rod 1 further includes a cover 113, which and the battery holder 12 together define a collection cavity 125. The collection cavity 125 has an opening on the side facing the cover 113, so that the battery holder 12 can be easily demolded after molding.

[0082] In one embodiment of this application, the cross-sectional area of ​​the first air inlet 151 is less than or equal to the cross-sectional area of ​​the first drain hole 121, making it easier for the liquid matrix or condensate to enter the first drain hole 121.

[0083] In one embodiment of this application, the battery rod 1 includes an electrode 18, and the battery bracket 12 also includes a fourth through hole 1210. The electrode 18 is connected to the circuit board 13 through the fourth through hole 1210, and the atomizing component of the cartridge assembly 2 provides the electrode 18 to be connected to the circuit board 13.

[0084] In one embodiment of this application, the battery rod 1 includes a first magnetic element 19, and the battery bracket 12 further includes a third groove 1211, wherein the first magnetic element 19 is disposed in the third groove 1211.

[0085] In one embodiment of this application, the first housing 11 includes a first snap-fit ​​connector 114, and the battery bracket 12 includes a second snap-fit ​​connector 1212. The first housing 11 and the battery bracket 12 are connected by the first snap-fit ​​connector 114 and the second snap-fit ​​connector 1212.

[0086] In one embodiment of this application, the battery holder 12 includes a fourth groove 1213, and the battery rod 1 also includes a third seal 1214. The third seal 1214 is disposed between the battery holder 12 and the first housing 11, and the third seal 1214 is located in the fourth groove, so that the first housing 11 and the battery holder 12 are sealed, so that the user can obtain a suitable suction resistance when sucking.

[0087] An embodiment of this application also provides an aerosol generating device 10, including a cartridge assembly 2 and the aforementioned battery rod 1, wherein at least a portion of the cartridge assembly can be held in a receiving cavity 115, and the battery rod 1 provides electrical energy to the cartridge assembly 2.

[0088] In one embodiment of this application, the cartridge assembly 2 includes a second housing 21 and a base 22, which are connected by a first snap-fit ​​portion and a second snap-fit ​​portion. The second housing 21 and the base 22 together define a liquid storage cavity 211 for storing a liquid matrix.

[0089] In one embodiment of this application, a second magnetic element 23 is provided on the base 22 of the cartridge assembly 2, and the cartridge assembly 2 and the battery rod 1 are connected by a first magnetic element 19 and a second magnetic element 23.

[0090] In one embodiment of this application, a third air inlet 221 is also provided on the base 22 of the cartridge assembly 2. In one embodiment of this application, when the switch assembly 127 is in the open state, external air can enter the collection chamber through the second through hole 111 on the first housing 11 of the battery rod 1 and the second drain hole 126 on the battery bracket 12, and then enter the third air inlet 211 of the cartridge assembly 2 through the first drain hole 121, thereby bringing the aerosol generated by the heating of the atomizing component 24 in the cartridge assembly 2 to the user. In one embodiment of this application, external air can enter the collection chamber 125 through the third through hole 112 on the first housing 11 of the battery rod 1 and the pressure relief hole 128 on the battery bracket 12, and then enter the third air inlet 211 of the cartridge assembly 2 through the first drain hole 121, thereby bringing the aerosol generated by the heating of the atomizing component 24 in the cartridge assembly 2 to the user. External air enters the cartridge assembly 2 only after passing through the collection chamber 125, allowing the user to obtain a suitable draw resistance when inhaling. Furthermore, the condensate in the aerosol when the user exhales can be collected in the collection chamber, preventing corrosion of the airflow sensor 14 or the battery 17.

[0091] In one embodiment of this application, the cartridge assembly 2 includes an atomizing assembly 24, which includes a support tube, a liquid guiding component, and a heating element. The liquid guiding component has a liquid guiding surface and a heating surface disposed opposite to each other. The liquid guiding surface is in fluid communication with the liquid storage chamber. The liquid guiding component guides the liquid matrix from the liquid guiding surface to the heating surface. One side of the heating surface is an atomizing chamber. Under the heating of the heating element on the heating surface, the liquid matrix is ​​atomized to generate an aerosol that enters the atomizing chamber. In one embodiment of this application, the liquid guiding component includes a porous body, which can be a fiber, such as cotton fiber, polypropylene fiber, polyester fiber, or nylon fiber. The porous body can be porous ceramic or porous metal. This application does not limit the structure and composition of the porous body. In one embodiment of this application, the support tube is a steel pipe.

[0092] In one embodiment of this application, the atomizing component 24 may include an ultrasonic element capable of high-frequency vibration under ultrasonic drive, wherein the atomizing component 24 utilizes ultrasonic vibration to atomize the liquid matrix into an aerosol. Of course, the atomizing component 24 may also include other elements capable of atomizing the liquid matrix into an aerosol.

[0093] In one embodiment of this application, the base 22 is provided with a receiving groove 222, and a liquid-absorbing member 223 is provided in the receiving groove 222. The liquid-absorbing member 223 can absorb the liquid matrix or condensate in the aerosol leaked from the cartridge assembly 2.

[0094] In one embodiment of this application, the liquid-absorbing element 223 can be made of an elastic organic porous material. The liquid-absorbing element 223 can have a hardness or flexibility between that of typical flexible plant cotton / non-woven fabric (Shore hardness less than 20A) and rigid porous ceramic / microporous metal (Shore hardness greater than 80A), thus exhibiting structural stability with extremely low expansion after absorbing and wetting the liquid matrix, while also possessing a certain degree of hardness for easy fixation and retention. In one embodiment of this application, the liquid-absorbing element 223 can be made of rigid synthetic cotton.

[0095] In one embodiment of this application, the second housing 21 includes a positioning protrusion 212, and the base 22 includes a positioning groove 224. The second housing 21 and the base 22 are positioned by the positioning protrusion 212 and the positioning groove 224.

[0096] In one embodiment of this application, the positioning protrusion 212 includes a first surface 2121, a second surface 2122, and a third surface 2123. The first surface 2121 and the second surface 2122 are disposed opposite to each other, and the first surface 2121 and the outer surface of the second housing 21 are on the same plane. The third surface 2123 is located between the first surface 2121 and the second surface 2122. In one embodiment of this application, the area of ​​the first surface 2121 is smaller than the area of ​​the second surface 2122, and the third surface 2123 is a slope or an arc surface.

[0097] In one embodiment of this application, the shape of the positioning groove 224 is adapted to the shape of the positioning protrusion 212.

[0098] In one embodiment of this application, the opening of the positioning groove 224 decreases in the direction from the axis of the cartridge assembly 2 toward the second housing 21. During the positioning process of the positioning protrusion 212 and the positioning groove 224, the positioning groove 224 can provide a force to the positioning protrusion 212 in the direction from the axis of the second housing 21 toward the cartridge assembly 2, thereby preventing the second housing 21 from expanding and deforming during the installation of the base 22 and the second housing 21.

[0099] In one embodiment of this application, the side of the positioning groove 224 away from the second housing 21 is a closed end. The closed end can abut against the positioning protrusion 212 in the axial direction of the cartridge assembly 2, so as to facilitate the installation of the second housing 21 and the base 22.

[0100] It should be noted that the preferred embodiments of this application are given in the specification and accompanying drawings, but are not limited to the embodiments described in this specification. Furthermore, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A battery rod for use in combination with a cartridge assembly, characterized in that, The battery rod comprises: a first housing; a battery support arranged in the first housing and defining a receiving cavity with the first housing for accommodating the cartridge assembly, the battery support defining a collection cavity for collecting liquid substrate from the cartridge assembly, and the battery support being provided with a first liquid discharge hole communicating the receiving cavity and the collection cavity at one end of the battery support, the first liquid discharge hole guiding the liquid substrate leaked from the cartridge assembly into the receiving cavity to the collection cavity; an airflow sensor arranged in the battery support for sensing airflow change in the cartridge assembly; a first seal retained on the battery support and arranged at one end of the battery support towards the receiving cavity; wherein the first seal has a gas guide portion defining a first air inlet hole communicating with one side of the airflow sensor, the gas guide portion protruding towards the receiving cavity so that the port of the first air inlet hole is higher than the first liquid discharge hole.

2. The battery rod according to claim 1, wherein: the first seal and the battery support jointly define a first air passage, and the first air passage and the first air inlet hole are in communication.

3. The battery rod according to claim 2, wherein: the battery support defines a second air inlet hole, the second air inlet hole is in communication with the first air passage, and the longitudinal projection of the second air inlet hole is offset from the first air inlet hole.

4. The battery rod according to claim 3, wherein: the first seal is provided with a collection groove opposite the second air inlet hole, and the first air passage and the second air inlet hole intersect at the collection groove.

5. The battery rod according to claim 3, wherein: the battery rod further comprises a second seal, the airflow sensor comprises a first face and a second face arranged opposite to each other, the second seal is located between the first face and the battery support, and the first face is in communication with the second air inlet hole.

6. The battery rod according to claim 5, wherein: the battery support comprises a first recess, the second seal comprises a first sealing portion and a second sealing portion, the first sealing portion is located between the first face and the battery support, and the second sealing portion is arranged in the first recess.

7. The battery rod according to claim 6, wherein: the first sealing portion is provided with a first through hole, and the first through hole is in communication with the first face.

8. The battery rod according to claim 7, wherein: the second sealing portion is formed with a second recess, one end of the second recess is in communication with the second air inlet hole, and the other end of the second recess is in communication with the first through hole.

9. The battery rod according to claim 1, wherein: a side wall of the battery support is provided with a second liquid discharge hole communicating the collection cavity for discharging liquid substrate to the outside.

10. The battery rod according to claim 9, wherein: the battery rod further comprises a switch assembly for opening or closing the second liquid discharge hole.

11. The battery pole of claim 9 or 10, wherein, The second liquid discharge hole is configured as an air inlet, and the first liquid discharge hole provides air to the cartridge assembly.

12. The battery bar of claim 10, wherein, A side wall of the battery holder is provided with a pressure relief hole communicating with the collection cavity, the pressure relief hole being higher than the second liquid discharge hole.

13. The battery pole of claim 1, wherein, The first seal covers an end of the battery holder facing the receiving cavity and avoids the first liquid discharge hole.

14. An aerosol-generating device comprising: A cartridge assembly and the battery bar of any one of claims 1-13, at least a portion of the cartridge assembly being retainable in the receiving cavity, the battery bar providing electrical power to the cartridge assembly.

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