Atomization assembly and electronic atomization apparatus

Abstract

Disclosed in the present application are an atomization assembly and an electronic atomization apparatus. The electronic atomization apparatus comprises: a liquid storage unit; a measurement electrode, which comprises a first measurement electrode and a second measurement electrode spaced apart from each other; a wicking element, at least a portion of which is sandwiched between the first measurement electrode and the second measurement electrode; a heating element, which is configured to heat a liquid substrate to generate an aerosol; and a circuit, which is electrically connected to the measurement electrode, wherein the circuit is configured to apply a voltage between the first measurement electrode and the second measurement electrode so as to measure a resistance value on a current path between the first measurement electrode and the second measurement electrode, and to determine, on the basis of the resistance value or a change in the resistance value, whether the liquid substrate provided for the heating element is depleted. In the present application, the resistance value of a wicking element can be measured by means of a measurement electrode, and whether a liquid substrate provided for a heating element is depleted is determined on the basis of the resistance value or a change in the resistance value, thereby being conducive to improving a user's vaping experience and preventing the generation of harmful substances such as formaldehyde.

Description

Atomization assembly and electronic atomization device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application No. 202411067199.X filed on August 5, 2024, and entitled “Atomization assembly and electronic atomization device”, the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of electronic atomization, and in particular to an atomization assembly and an electronic atomization device. BACKGROUND

[0004] In the related art, there is another electronic atomization device that generates aerosol for a user to smoke by heating a liquid substrate, such as e-liquid.

[0005] In the above device, generally includes an atomization assembly and a liquid storage cavity, the liquid storage cavity is used to store the liquid substrate, and the atomization assembly is used to absorb the liquid substrate and heat the liquid substrate to generate aerosol for the user to smoke. When the liquid substrate in the liquid storage cavity or the atomization assembly is depleted, dry burning phenomenon is prone to occur, thereby generating harmful substances such as formaldehyde, and reducing the user's smoking experience. SUMMARY

[0006] The present application provides an atomization assembly and an electronic atomization device to solve the problem that the existing electronic atomization device is prone to generate harmful substances such as formaldehyde when the liquid substrate in the liquid storage cavity or the atomization assembly is depleted.

[0007] In one aspect, the present application provides an electronic atomization device, comprising:

[0008] a liquid storage unit configured to store a liquid substrate;

[0009] a detection electrode including a first detection electrode and a second detection electrode arranged at intervals;

[0010] a wicking element made of a capillary material for absorbing and retaining part of the liquid substrate; at least a portion of the wicking element is clamped between the first detection electrode and the second detection electrode;

[0011] a heating element configured to heat the liquid substrate to generate an aerosol;

[0012] a circuit electrically connected to the detection electrode; the circuit is configured to load a voltage between the first detection electrode and the second detection electrode to detect the resistance value on the current path between the first detection electrode and the second detection electrode, and determine whether the liquid substrate provided to the heating element is depleted based on the resistance value or the change of the resistance value.

[0013] In an example, the first detection electrode and the second detection electrode are adjacent to the heating element, or at least a portion of the wicking element is adjacent to the heating element.

[0014] In an example, the first detection electrode or the second detection electrode is part of the heating element.

[0015] In an example, one end of the first detection electrode and one end of the second detection electrode are arranged close to the wicking element, and the other end of the first detection electrode and the other end of the second detection electrode extend towards a direction away from the mouthpiece of the electronic atomization device.

[0016] In an example, one end of the first detection electrode or the second detection electrode is inserted into the wicking element, or the first detection electrode or the second detection electrode is attached to a surface of the wicking element.

[0017] In an example, the wicking element is at least partially arranged in the liquid storage unit, or the wicking element is arranged spaced apart from the liquid storage unit and in fluid communication with the liquid storage unit.

[0018] In an example, a holder for holding the wicking element is further included.

[0019] The holder has a liquid passage to enable fluid communication between the wicking element and the liquid storage unit.

[0020] In an example, the wicking element is at least partially sandwiched between the holder and the heating element.

[0021] One end of the first detection electrode is connected to the holder, and the heating element has a first conductive electrode and a second conductive electrode electrically connected to a power source of the electronic atomization device, and the first conductive electrode or the second conductive electrode constitutes the second detection electrode.

[0022] In an example, the circuit is further configured to determine that the liquid substrate is absent when the resistance or change in resistance is greater than a predetermined threshold.

[0023] In an example, the circuit includes a sampling resistor connected to the first detection electrode or the second detection electrode, thereby constituting a series voltage division detection circuit.

[0024] In an example, a prompt module is further included, and the prompt module is configured to issue a prompt to a user when the liquid substrate is absent.

[0025] In an example, the control unit is further configured to deactivate the heating element when absence of the liquid substrate is detected.

[0026] In an example, the circuit comprises a control unit configured to determine the remaining amount of the liquid substrate in the liquid storage unit based on the resistance value detected on the current path between the first detection electrode and the second detection electrode.

[0027] In an example, the control unit is further configured to adjust the heating power of the heating element based on the determined remaining amount of the liquid substrate in the liquid storage unit.

[0028] In an example, the first detection electrode or the second detection electrode is configured in a tubular shape surrounding the wicking element.

[0029] In an example, the circuit is further configured to determine the type of the liquid substrate based on the degree of change of the resistance value.

[0030] Another aspect of the present application provides an atomization assembly for atomizing a liquid substrate to generate an aerosol, the atomization assembly comprising:

[0031] a wicking element made of a capillary material for absorbing and holding a portion of the liquid substrate;

[0032] a heating element configured to heat the liquid substrate held in the wicking element to generate the aerosol;

[0033] a holding member configured in a tubular shape surrounding the wicking element;

[0034] a detection electrode comprising a first detection electrode and a second detection electrode arranged in a spaced manner, at least a portion of the wicking element being sandwiched between the first detection electrode and the second detection electrode; the detection electrode being used to detect a resistance value on a current path between the first detection electrode and the second detection electrode;

[0035] wherein at least a portion of the holding member serves as the first detection electrode or the second detection electrode.

[0036] The atomization assembly and the electronic atomization device provided above can detect the resistance value of the wicking element through the detection electrode, and determine whether the liquid substrate provided to the heating element is absent based on the resistance value or the change of the resistance value, which is conducive to improving the user's smoking experience and avoiding the generation of harmful substances such as formaldehyde. BRIEF DESCRIPTION OF DRAWINGS

[0037] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. One or more embodiments are exemplarily described by the pictures in the drawings corresponding to the embodiments, which do not constitute limitation to the embodiments. The elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified. The drawings do not constitute proportional limitation.

[0038] Fig. 1 is a schematic diagram of an electronic atomization device according to an embodiment of the present application;

[0039] Fig. 2 is a schematic diagram of a detection electrode according to an embodiment of the present application;

[0040] Fig. 3 is a schematic diagram of a series voltage division detection circuit according to an embodiment of the present application;

[0041] Fig. 4 is a schematic diagram of a relationship curve between the number of puffs and the weight according to an embodiment of the present application;

[0042] Fig. 5 is a schematic diagram of a relationship curve between the number of puffs and the resistance according to an embodiment of the present application;

[0043] Fig. 6 is a schematic diagram of an electronic atomization device after an experiment according to an embodiment of the present application;

[0044] Fig. 7 is a schematic diagram of another electronic atomization device according to an embodiment of the present application;

[0045] Fig. 8 is a schematic diagram of a cross section of Fig. 7;

[0046] Fig. 9 is a schematic diagram of another cross section of Fig. 7;

[0047] Fig. 10 is a schematic diagram of a combination of a retaining member, a wicking element and a heating element in another electronic atomization device according to an embodiment of the present application;

[0048] Fig. 11 is a schematic diagram of an exploded view of Fig. 10. Embodiments of the present application

[0049] It should be understood that the specific embodiments described herein merely exemplify the application and do not limit the application. In order to facilitate the understanding of the present application, the present application will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or one or more intermediate elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intermediate elements can be present therebetween. The terms "upper", "lower", "left", "right", "inner", "outer" and similar expressions used in the specification are for illustrative purposes only.

[0050] Unless otherwise defined, all technical and scientific terms used in the present disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. All publications, patent applications, patents, and other references mentioned in this specification are herein incorporated by reference in their entirety.

[0051] FIG. 1 is a schematic diagram of an electronic atomization device according to an embodiment of the present application.

[0052] As shown in FIG. 1, the electronic atomization device includes a mouthpiece 11, a liquid storage unit 12, a wicking element 13, a heating element 14, a circuit 15, a power supply 16, and a charging interface 17. In the example of FIG. 1, the above components are integrally formed, and the electronic atomization device is a conventional integrated device. In another example, the electronic atomization device includes an atomization assembly, and a power supply assembly detachably connected to the atomization assembly. The atomization assembly is also commonly referred to as a cartridge, and the power supply assembly is also commonly referred to as a stick. The circuit 15, the power supply 16, and the charging interface 17 are located in the power supply assembly, and the mouthpiece 11, the liquid storage unit 12, the wicking element 13, and the heating element 14 are located in the atomization assembly.

[0053] The mouthpiece 11 is used for a user to inhale the aerosol generated by heating.

[0054] The liquid storage unit 12 is used to store a liquid substrate capable of generating an aerosol. The liquid substrate can be a liquid including a tobacco-containing substance containing volatile tobacco flavor components, or a liquid including a non-tobacco substance. For example, the liquid substrate can include water, a solvent, ethanol, a plant extract, a flavorant, a flavoring agent, or a vitamin mixture. The flavorant can include menthol, peppermint, spearmint oil, various fruit flavor components, etc., but is not limited thereto. The flavoring agent can include components capable of providing a user with a variety of flavors or tastes. The vitamin mixture can be a substance mixed with at least one of vitamin A, vitamin B, vitamin C, and vitamin E, but is not limited thereto. In addition, the liquid substrate can include an aerosol forming agent such as glycerin and propylene glycol.

[0055] The wicking element 13 is made of a wicking material such as cotton fiber, non-woven fabric fiber, sponge, etc. The shape of the wicking element 13 is not limited and can be configured in a tubular shape, a plate shape, or other regular or irregular shapes. In an example, at least a portion of the wicking element 13 is disposed adjacent to the heating element 14. In an example, the wicking element 13 can be entirely disposed in the liquid storage unit 12 to absorb and hold the liquid base, and the heating element 14 can draw the liquid base in the wicking element 13 through another wicking element and heat the liquid base. In an example, the wicking element 13 can be partially disposed in the liquid storage unit 12, and the heating element 14 is disposed on another portion of the wicking element 13, and the wicking element 13 draws the liquid base in the liquid storage unit 12 and is heated by the heating element 14.

[0056] The heating element 14 can be a metal wire, a metal plate, a ceramic heater, etc., but is not limited thereto. In addition, the heating element 14 can be configured by an electrically conductive heating wire such as a nichrome wire and can be disposed to be wound around the wicking element 13. The heating element 14 can be heated by a current supply and transfer heat to the liquid base in contact with the heating element 14 to heat the liquid base, and thus generate an aerosol.

[0057] The circuit 15 can control the overall operation of the electronic atomizing device. In detail, the circuit 15 not only controls the operation of the power supply 16 and the heating element 14, but also controls the operation of other elements in the electronic atomizing device. In addition, the circuit 15 can determine whether the electronic atomizing device can operate by checking the state of the components of the electronic atomizing device.

[0058] The power supply 16 provides power for operating the electronic atomizing device. For example, the power supply 16 can provide power to heat the heating element 14, and can provide power required to operate the circuit 15. In addition, the power supply 16 can provide power required to operate the sensors, motors, etc. provided in the electronic atomizing device.

[0059] The power supply 16 can be, but is not limited to, a lithium iron phosphate (LiFePO4) battery cell provided in the electronic atomizing device. For example, the power supply 16 can be a lithium cobalt oxide (LiCoO2) battery cell or a lithium titanate battery cell. The power supply 16 can be a rechargeable battery cell. In other examples, the power supply 16 can also be a component independent of the electronic atomizing device.

[0060] The charging interface 17 has a voltage output terminal. The voltage output terminal is configured to output a charging voltage. Specifically, when the charging interface 17 is electrically connected to an external power supply device, for example, an external power adapter is inserted into the charging interface 17, the voltage output terminal of the charging interface 17 outputs a charging voltage of 5V.

[0061] It should be noted that FIG. 1 only shows components relevant to the present embodiments. Those skilled in the art should understand that the electronic atomization device can also include other general components in addition to those shown in FIG. 1.

[0062] For example, the electronic atomization device further includes a puff detector (not shown) for detecting a puffing action of a user and generating a corresponding electrical signal, such as detecting whether the electronic atomization device is puffed, the puffing duration, the number of puffs, etc., so that the circuit 15 controls the operation of the power supply 16, the heating element 14, etc. according to the electrical signal, such as controlling the power supply 16 to provide power to the heating element 14, so that the heating element 14 heats the atomized liquid substrate. The puff detector can employ a common pressure sensor, differential pressure sensor, airflow sensor, etc. When the electronic atomization device is puffed, the airflow enters through the charging interface 17, flows through the power supply 16, the circuit 15, the heating element 14, etc., and then flows out through the mouthpiece 11. The dashed arrows in the figure roughly show the airflow path.

[0063] For another example, the electronic atomization device further includes a temperature sensor (not shown) for detecting the temperature of the heating element 14. In one example, the temperature sensor can be a device independent of the heating element 14. In another example, the heating element 14 is configured such that its resistance value can change with temperature, i.e. the heating element 14 can be used to heat the liquid substrate and also as a device for sensing the real-time temperature. For example: the resistive material of the heating element 14 can be selected from a metal or alloy material with a suitable temperature coefficient of resistance, such as a positive temperature coefficient or a negative temperature coefficient, so that the heating element 14 can be used to generate heat and also as a sensor for sensing the real-time temperature of the heating element 14.

[0064] For understanding, please refer to FIG. 2, the electronic atomization device further includes a detection electrode 2. In some embodiments, the material of the detection electrode 2 is one or more of stainless steel, gold, silver, platinum, chrome plating, or tin plating, or other metal materials with good conductivity and corrosion resistance; at the same time, the cross-sectional shape of the detection electrode 2 is a long strip or a circle, and the thickness of the detection electrode 2 is between 0.01mm and 1mm.

[0065] The detection electrode 2 includes a first detection electrode 21 and a second detection electrode 22 arranged at intervals, and at least a part of the wicking element 13 is clamped between the first detection electrode 21 and the second detection electrode 22. In one example, the first detection electrode 21 and the second detection electrode 22 are arranged adjacent to the heating element 14. In one example, the first detection electrode 21 or the second detection electrode 22 belongs to a part of the heating element 14.

[0066] In the example shown in the figure, one end of the first detection electrode 21 and the second detection electrode 22 is inserted into the wicking element 13, and the other end of the first detection electrode 21 and the second detection electrode 22 extends out of the liquid storage unit 12. In a preferred implementation, the other end of the first detection electrode 21 and the second detection electrode 22 extends towards a direction away from the mouthpiece 11, i.e. towards the circuit 15 and / or the power supply 16, which on one hand facilitates the layout and structural design of the device, and on the other hand facilitates the electrical connection with the circuit 15 and / or the power supply 16. When the electronic atomization device is composed of an atomization assembly and a power supply assembly which are detachably connected, the first detection electrode 21 and the second detection electrode 22 are arranged in the atomization assembly, and the other end of the first detection electrode 21 and the second detection electrode 22 can be exposed on the surface of the atomization assembly, so as to be in contact with the electrical contacts of the power supply assembly when the atomization assembly and the power supply assembly are connected, thereby forming an electrical connection.

[0067] Since the liquid substrate has certain electrical conductivity, when the wicking element 13 carries the liquid substrate, one end of the first detection electrode 21 and the second detection electrode 22 is immersed in the liquid substrate, which is equivalent to connecting an equivalent resistor between the first detection electrode 21 and the second detection electrode 22. The resistance value of the equivalent resistor changes with the amount of the liquid substrate, and when the type of the liquid substrate is unchanged, the resistance value of the equivalent resistor is negatively correlated with the amount of the liquid substrate, i.e. the more the amount of the liquid substrate, the smaller the resistance value of the equivalent resistor; the less the amount of the liquid substrate, the greater the resistance value of the equivalent resistor. Therefore, by loading a voltage between the first detection electrode 21 and the second detection electrode 22, the resistance value or the change of the resistance value of the equivalent resistor on the current path between the first detection electrode 21 and the second detection electrode 22 can be detected, and based on the resistance value or the change of the resistance value of the equivalent resistor, it can be determined whether the amount of the liquid substrate in the wicking element 13 is sufficient or whether the liquid substrate provided to the heating element 14 is insufficient. Or in other examples, the type of the liquid substrate can be determined based on the degree of change of the resistance value of the equivalent resistor.

[0068] As shown in FIG. 3, in an example, the circuit 15 includes a sampling resistor Rref, one end of the sampling resistor Rref is electrically connected to the wicking element 13 through one of the first detection electrode 21 and the second detection electrode 22, thereby forming a series voltage division detection circuit. Specifically, R0 in the figure is the aforementioned equivalent resistor, the other of the first detection electrode 21 and the second detection electrode 22 is electrically connected to the positive electrode of the power supply 16 (indicated by VCC in the figure), and the other end of the sampling resistor Rref is grounded.

[0069] The circuit 15 includes at least one control unit 151. The control unit 151 can include, but is not limited to, a combination of a microcontroller and a memory for storing programs executable in the microcontroller, and the memory can be integrated in the microcontroller or independent of the microcontroller.

[0070] The control unit 151 can sample the voltage (indicated by Vref in the figure) at one of the detection electrode ends of the first detection electrode 21 and the second detection electrode 22, which is the voltage across the sampling resistor Rref. Based on the known resistance value of the sampling resistor Rref and the voltage of the power supply 16, the resistance value or the change in the resistance value of the equivalent resistor R0 can be calculated according to Ohm's law.

[0071] The inventors of the present application have verified the conclusion that the resistance value of the equivalent resistor is negatively correlated with the amount of liquid matrix in the wicking element 13 through experimental means. Specifically,

[0072] First, four electronic atomization devices (numbered #1~#4) are selected, and the four electronic atomization devices are all of the same structure. The detection electrodes 2 of each electronic atomization device can be arranged in the manner of FIG. 2, and the detection circuit can be built in the manner of FIG. 3. The difference is that the types of the liquid matrix injected into the four electronic atomization devices are different.

[0073] Then, during the test, the electronic atomization device is sucked by a suction machine, and the suction machine is set to suck for 3 seconds (s) each time, and to suck again after an interval of 27 seconds. The voltage across the sampling resistor Rref can be sampled after each suction, and then the resistance value of the equivalent resistor R0 can be calculated. Alternatively, the voltage across the sampling resistor Rref can be sampled after a predetermined number of times of suction, and then the resistance value of the equivalent resistor R0 can be calculated. After the resistance value of the equivalent resistor R0 is calculated, the #1~#4 electronic atomization devices are weighed respectively, and the weight of the electronic atomization device at this time is recorded.

[0074] Finally, the data obtained during the test is sorted and graphed to obtain the relationship curve between the number of suction times and the weight shown in FIG. 4, and the relationship curve between the number of suction times and the resistance value shown in FIG. 5.

[0075] As shown in FIG. 4: in FIG. 4, the abscissa represents the number of suction times, and the first number (indicated by 1 in the figure) represents 25 times of suction, and the difference between the two adjacent numbers is 25; the ordinate represents the weight of the electronic atomization device, and the unit is mg (milligram). As can be seen from the figure, as the number of suction times increases, the weight of the #1~#4 electronic atomization devices decreases; thus it can be determined that as the number of suction times increases, the amount of liquid matrix in the wicking element 13 also decreases. FIG. 6 is the situation of the liquid storage units 12 in the #1~#4 electronic atomization devices after the test (i.e. after about 150 times of suction), and it can be seen with the naked eye that the amount of liquid matrix in the wicking element 13 has decreased a lot compared to before the test.

[0076] As shown in FIG. 5: in FIG. 5, the abscissa represents the number of puffs, the first number (shown as 1 in the figure) represents 25 puffs, and the difference between the two adjacent numbers is 25; the ordinate represents the resistance value of the equivalent resistance R0, with the unit of KΩ (kilo-ohm). As can be seen from the figure, with the increase of the number of puffs, the resistance value of the equivalent resistance R0 in the electronic atomization device #1~#4 decreases.

[0077] Therefore, in combination with FIG. 4 and FIG. 5, it can be determined that for different types of liquid matrix, the resistance value of the equivalent resistance R0 is negatively correlated with the amount of liquid matrix in the wicking element 13, that is, the more the amount of liquid matrix in the wicking element 13, the smaller the resistance value of the equivalent resistance R0; the less the amount of liquid matrix in the wicking element 13, the greater the resistance value of the equivalent resistance R0.

[0078] It should be noted that for the case where the first detection electrode 21 and the second detection electrode 22 are inserted into the wicking element 13 as shown in FIG. 2, the distance L at which the first detection electrode 21 or the second detection electrode 22 is inserted into the wicking element 13, and the interval distance d between the first detection electrode 21 and the second detection electrode 22, all have an influence on the resistance value of the equivalent resistance R0. By adjusting the size of L and / or d, the ordinate value shown in FIG. 5 will also change, but the resistance value of the equivalent resistance R0 is still negatively correlated with the amount of liquid matrix in the wicking element 13.

[0079] It should be noted that in other examples, it is also feasible to have the first detection electrode 21 or the second detection electrode 22 abutting against the surface of the wicking element 13. For example, the first detection electrode 21 or the second detection electrode 22 is inserted downward along the gap between the wicking element 13 and the liquid storage unit 12, so that the first detection electrode 21 or the second detection electrode 22 is clamped between the outer surface of the wicking element 13 and the inner surface of the liquid storage unit 12.

[0080] Based on the above electronic atomization device, in an example, the control unit 151 is configured to load a voltage between the first detection electrode 21 and the second detection electrode 22 to detect the resistance value on the current path between the first detection electrode 21 and the second detection electrode 22, and determine whether the liquid matrix provided to the heating element 14 is missing based on the resistance value or the change of the resistance value.

[0081] Specifically, since the resistance value of the equivalent resistance R0 is negatively correlated with the amount of liquid substrate in the wicking element 13, the resistance value or the change of the resistance value of the equivalent resistance R0 corresponding to the absence of the liquid substrate provided to the heating element 14 can be determined in advance by experiment, and the resistance value or the change of the resistance value of the equivalent resistance R0 is stored in the memory of the control unit 151 as a predetermined threshold. After the control unit 151 samples the voltage across the sampling resistor Rref and calculates the resistance value or the change of the resistance value of the equivalent resistance R0, the control unit 151 can compare the calculated resistance value or the change of the resistance value of the equivalent resistance R0 with the predetermined threshold. If the calculated resistance value or the change of the resistance value of the equivalent resistance R0 is greater than the predetermined threshold, it is determined that the liquid substrate provided to the heating element 14 is absent.

[0082] In a further implementation, when it is determined that the liquid substrate provided to the heating element 14 is absent, the heating element 14 is deactivated, for example, the control unit 151 controls the electrical connection between the heating element 14 and the power supply 16 to be disconnected, or the control unit 151 stops outputting the driving signal to the switching circuit.

[0083] In another further implementation, the electronic atomization device further comprises a prompting module 3 configured to issue a prompt to the user when it is determined that the liquid substrate provided to the heating element 14 is absent.

[0084] The prompting module 3 can be in the form of sound, light, vibration, etc. feedback to the user, thereby reminding the user that the amount of liquid substrate in the electronic atomization device has been substantially depleted or completely depleted, and injecting liquid substrate or replacing the atomization assembly in time.

[0085] In an example, the control unit 151 is configured to determine the remaining amount of liquid substrate in the liquid storage unit 12 based on the resistance value on the current path between the first detection electrode 21 and the second detection electrode 22.

[0086] Specifically, since the resistance value of the equivalent resistance R0 is negatively correlated with the amount of liquid substrate in the wicking element 13, the resistance value or the change of the resistance value of the equivalent resistance R0 corresponding to the absence of the liquid substrate provided to the heating element 14 can be determined in advance by experiment, and the resistance value or the change of the resistance value of the equivalent resistance R0 is stored in the memory of the control unit 151 as a predetermined threshold. After the control unit 151 samples the voltage across the sampling resistor Rref and calculates the resistance value or the change of the resistance value of the equivalent resistance R0, the control unit 151 can compare the calculated resistance value or the change of the resistance value of the equivalent resistance R0 with the predetermined threshold. If the calculated resistance value or the change of the resistance value of the equivalent resistance R0 is greater than the predetermined threshold, it is determined that the liquid substrate provided to the heating element 14 is absent.

[0087] In a further implementation, the control unit 151 can adjust the heating power of the heating element 14 based on the determined remaining amount of liquid substrate in the liquid storage unit 12.

[0088] For example, when the amount of liquid substrate in the wicking element 13 is sufficient, the heating power of the heating element 14 can be appropriately increased; and when the amount of liquid substrate in the wicking element 13 is insufficient, the heating power of the heating element 14 can be appropriately decreased.

[0089] In an example, the control unit 151 is configured to determine the type of the liquid substrate based on the degree of change in the resistance value of the current path between the first detection electrode 21 and the second detection electrode 22.

[0090] Specifically, it can be determined from FIG. 5 and the foregoing that the types of the liquid substrates injected into the electronic atomization devices #1-#4 are different, and for different types of the liquid substrates, the degree of change in the resistance value of the corresponding equivalent resistance R0 is different as the number of puffs (or the amount of the liquid substrate in the wicking element 13) increases.

[0091] Therefore, the degree of change in the resistance value of the wicking element 13 corresponding to a certain amount of different types of liquid substrates can be obtained through experiments in advance, and the experimental data can be stored in the memory of the control unit 151. After the control unit 151 samples the voltage across the sampling resistance Rref and calculates the degree of change in the resistance value of the equivalent resistance R0, the type of the liquid substrate in the liquid storage unit 12 can be determined. For example, when the calculated degree of change in the resistance value of the equivalent resistance R0 is the same as or close to the degree of change in the resistance value corresponding to a certain type of liquid substrate stored in the memory of the control unit 151, it can be determined that the type of the liquid substrate in the liquid storage unit 12 is the certain type of liquid substrate.

[0092] FIGS. 7-11 are schematic diagrams of another electronic atomization device provided in an embodiment of the present application.

[0093] Unlike the foregoing example, the liquid storage unit 12 is not provided with the wicking element 13. The wicking element 13 is spaced apart from the liquid storage unit 12 and is in fluid communication with the liquid storage unit 12. Specifically, a support 18 is provided in the atomization assembly 10, and at least part of the boundary of the liquid storage unit 12 is defined between the support 18 and the housing of the atomization assembly 10.

[0094] The atomization assembly 10 further comprises a holder 19 for holding the wicking element 13; the holder 19 is configured as a tubular structure surrounding the wicking element 13, one end of which is held on the bracket 18 and the other end of which is in communication with the suction nozzle 11. The wicking element 13 and the heating element 14 are both arranged in the holder 19 in a tubular structure, wherein the wicking element 13 is at least partially sandwiched between the holder 19 and the heating element 14. In this way, the holder 19 is arranged between the wicking element 13 and the liquid storage unit 12, so that the wicking element 13 and the liquid storage unit 12 are arranged in a spaced-apart manner; the holder 19 has a liquid passage 191 to enable the wicking element 13 and the liquid storage unit 12 to be in fluid communication, i.e. the liquid matrix stored in the liquid storage unit 12 flows to the wicking element 13 through the liquid passage 191 and is drawn by the wicking element 13 to the heating element 14, so that the heating element 14 is heated to form an aerosol. In further embodiments, part of the wicking element 13 can be in fluid communication with the liquid storage unit 12 through a gap slot 192 on the holder 19.

[0095] In this example, the wicking element 13 is also configured as a tubular structure, and the outer surface of the wicking element 13 is in contact with the inner surface of the holder 19. The heating element 14 is surrounded by the mesh structure of the conductive heating wire to form a tubular structure with a gap, and the heating element 14 is arranged against the inner surface of the wicking element 13.

[0096] In this example, the heating element 14 also has a first conductive electrode 141 and a second conductive electrode 142 electrically connected to the power source 16, for example, one end of the first conductive electrode 141 and the second conductive electrode 142 passes through the bracket 18, so as to be electrically connected to the power source 16.

[0097] In this example, the holder 19 also has an extension 193 extending through the bracket 18, the extension 193 constituting the aforementioned first detection electrode 21; the first conductive electrode 141 or the second conductive electrode 142 constituting the aforementioned second detection electrode 22. In this way, one end of the first detection electrode 21 and the second detection electrode 22 are arranged close to the wicking element 13. Through the first detection electrode 21 and the second detection electrode 22, the resistance value or the change of the resistance value of the equivalent resistance R0 of the wicking element 13 can be detected, and based on the resistance value or the change of the resistance value of the equivalent resistance, the remaining amount of the liquid matrix in the current wicking element 13 can be determined or it can be determined whether the liquid matrix provided to the heating element 14 is missing; or in other examples, the type of liquid matrix can be determined based on the degree of change of the resistance value of the equivalent resistance. For details, please refer to the foregoing part. It can be understood that in the above-mentioned holder 19, the extension 193 and the other parts of the holder 19 are made of different materials (the other parts of the holder 19 have conductivity). In other examples, the extension 193 and the other parts of the holder 19 can be made of the same material, for example, one or more of the aforementioned stainless steel, gold, silver, platinum, chrome plating, or tin plating, or other metal materials with good conductivity and corrosion resistance; in this way, the holder 19 is configured as a tubular around the wicking element 13, and the whole or at least a part can be used as the first detection electrode 21.

[0098] In further implementations, since the temperature of the wicking element 13 changes constantly during operation, and the change of temperature affects the detection accuracy of the liquid matrix saturation of the wicking element 13, a temperature sensor can be provided (for details, please refer to the foregoing part), and the temperature of the heating element 14 is detected in real time by the temperature sensor, and the detected temperature of the heating element 14 is combined with the temperature influence coefficient of the liquid matrix saturation to compensate for the temperature of the detected liquid matrix saturation of the wicking element 13, so that the detection of the liquid matrix saturation is more accurate. In this way, the liquid matrix saturation of the wicking element 13 is measured with fast response time, sensitive reaction, wide applicable temperature range (which can be applied in the range of -40°C~800°C), strong anti-pollution and anti-interference ability, and long service life.

[0099] It should be noted that the preferred embodiments of the present application are described in the specification and its attached drawings, but the present application can be implemented in many different forms and is not limited to the embodiments described in the specification, and these embodiments are not intended to be additional limitations on the content of the present application, and the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Furthermore, each of the above technical features continues to combine to form various embodiments not listed above, which are considered to be within the scope of the present application specification; further, for those skilled in the art, the above description can be improved or changed, and all these improvements and changes shall fall within the scope of protection of the claims of the present application.

Claims

1. An electronic atomizing device, characterized by, The electronic atomization device comprises: a liquid storage unit for storing a liquid medium; a detection electrode comprising a first detection electrode and a second detection electrode arranged in a spaced manner; a wicking element made of a capillary material for absorbing and holding part of the liquid medium; at least a portion of the wicking element is clamped between the first detection electrode and the second detection electrode; a heating element configured to heat the liquid medium to generate an aerosol; a circuit electrically connected to the detection electrode; the circuit is configured to load a voltage between the first detection electrode and the second detection electrode to detect a resistance value on a current path between the first detection electrode and the second detection electrode, and determine whether the liquid medium provided to the heating element is missing based on the resistance value or a change in the resistance value.

2. The electronic atomizing device of claim 1, wherein, The first detection electrode and the second detection electrode are adjacent to the heating element, or at least a portion of the wicking element is adjacent to the heating element.

3. The electronic atomizing device of claim 1, wherein, The first detection electrode or the second detection electrode is part of the heating element.

4. The electronic atomizing device of claim 1, wherein, One end of the first detection electrode and one end of the second detection electrode are arranged close to the wicking element, and the other end of the first detection electrode and the other end of the second detection electrode extend towards the direction away from the mouthpiece of the electronic atomization device.

5. The electronic atomizing device of claim 1, wherein, One end of the first detection electrode or the second detection electrode is inserted into the wicking element; or the first detection electrode or the second detection electrode is attached to the surface of the wicking element.

6. The electronic atomizing device of claim 1, wherein, The wicking element is at least partially arranged in the liquid storage unit, or the wicking element is arranged in a spaced manner and in fluid communication with the liquid storage unit.

7. The electronic atomizing device of claim 6, wherein, Further comprising a holder for holding the wicking element; The holder has a liquid passage to enable fluid communication between the wicking element and the liquid storage unit.

8. The electronic atomizing device of claim 7, wherein, The wicking element is at least partially clamped between the holder and the heating element; One end of the first detection electrode is connected to the holder, and the heating element has a first conductive electrode and a second conductive electrode electrically connected to a power supply of the electronic atomization device, and the first conductive electrode or the second conductive electrode constitutes the second detection electrode.

9. The electronic atomizing device of claim 1, wherein, The circuit is further configured to determine that the liquid medium is missing when the resistance value or the change in the resistance value is greater than a predetermined threshold value.

10. The electronic atomizing device of claim 1, wherein, The circuit comprises a sampling resistor connected to the first detection electrode or the second detection electrode to constitute a series voltage division detection circuit.

11. The electronic atomizing device of claim 1, wherein, Further comprising a prompt module configured to issue a prompt to a user when the liquid medium is missing.

12. The electronic atomizing device of claim 1, wherein, The circuit comprises a control unit configured to determine the remaining amount of the liquid medium in the liquid storage unit based on the detected resistance value on the current path between the first detection electrode and the second detection electrode.

13. The electronic atomizing device of claim 12, wherein, The control unit is further configured to disable the heating element when the liquid medium is missing.

14. The electronic atomizing device of claim 12, wherein, The control unit is further configured to adjust the heating power of the heating element based on the determined remaining amount of the liquid medium in the liquid storage unit.

15. The electronic atomizing device of claim 1, wherein, The first detection electrode or the second detection electrode is configured in a tubular shape around the wicking element.

16. The electronic atomizing device of claim 1, wherein, The circuit is further configured to determine a type of the liquid base based on a degree of change in the resistance value.

17. An atomisation assembly for atomising a liquid substrate to generate an aerosol, characterised by, The atomization assembly comprises: a wicking element made of a capillary wicking material for adsorbing and holding a portion of the liquid base; a heating element configured to heat the liquid base held in the wicking element to generate an aerosol; a holder configured in a tubular shape around the wicking element; a detection electrode comprising a first detection electrode and a second detection electrode arranged at intervals, at least a portion of the wicking element being sandwiched between the first detection electrode and the second detection electrode, the detection electrode being used to detect a resistance value on a current path between the first detection electrode and the second detection electrode; wherein at least a portion of the holder serves as the first detection electrode or the second detection electrode.

Images