Aerosol-generating device and driving control method applied to aerosol-generating device

Abstract

The application relates to the aerosol generating technical field and discloses an aerosol generating device and a driving control method applied to the aerosol generating device. The aerosol generating device comprises a receiving cavity with an opening, which is used for receiving a consumable containing a susceptor through the opening; an induction coil, which is configured to generate a changing magnetic field so as to induce the susceptor to heat and heat the consumable received in the receiving cavity; a power supply, which is electrically connected with the induction coil; and a controller, which is configured to control the power supply to provide a driving signal of a first frequency to the induction coil when the consumable exists in the aerosol generating device, and detect or calculate an electrical parameter associated with the consumable and generated from the induction coil; wherein the controller is further configured to determine a working frequency according to the electrical parameter and a preset reference value, and control the power supply to provide the driving signal to the induction coil according to the working frequency, so as to induce the susceptor to heat. Therefore, the application can determine the working frequency of the consumable, and improve the heating effect of the consumable.

Description

Technical Field

[0001] This application relates to the field of aerosol generation technology, and in particular to an aerosol generation device and a driving control method applied to the aerosol generation device. Background Technology

[0002] Tobacco products (such as cigarettes, cigars, etc.) produce tobacco smoke by burning tobacco during use. Efforts are being made to replace these tobacco-burning products by creating products that release compounds without combustion.

[0003] An example of such products is a heating device that releases compounds by heating rather than burning materials. Known heating devices can receive consumer products containing sensors, generating a changing magnetic field through an induction coil to heat the sensors and thus the consumer product within the receiving cavity. However, due to differences in material, shape, weight, and relative position (such as spacing and coupling angle) of the sensors in different types of consumer products, the heating device outputs a fixed-frequency drive signal upon startup. This makes it impossible to determine the operating frequency of the consumer product, thus preventing it from operating at that frequency and consequently affecting the heating effect. Summary of the Invention

[0004] This application provides an aerosol generating device and a driving control method applied to the aerosol generating device, which can determine the operating frequency of consumer products and improve the heating effect of consumer products.

[0005] At least one embodiment of this application provides an aerosol generating apparatus, comprising:

[0006] A receiving cavity with an opening for receiving a consumer product containing a sensor through the opening; an induction coil configured to generate a changing magnetic field, thereby inducing the sensor to heat up in order to heat the consumer product received in the receiving cavity;

[0007] The power supply is electrically connected to the induction coil;

[0008] A controller, electrically connected to the power supply, is configured to control the power supply to provide a drive signal of a first frequency to the induction coil when the consumer product is present in the aerosol generating device, and to detect or calculate electrical parameters of the consumer product associated with the induction coil.

[0009] The controller is further configured to determine the operating frequency based on the electrical parameters and a preset reference value, and control the power supply to provide a drive signal to the induction coil according to the operating frequency, thereby inducing the sensor to heat up.

[0010] In some embodiments, the receiving cavity is configured to selectively receive one of a first type of consumer product containing a first sensor and a second type of consumer product containing a second sensor through the opening. The operating frequency includes a second frequency and a third frequency. When the first type of consumer product is received in the receiving cavity, the controller controls the power supply to provide a drive signal of the second frequency to the induction coil, thereby inducing the first sensor to heat the first type of consumer product. When the second type of consumer product is received in the receiving cavity, the controller controls the power supply to provide a drive signal of the third frequency to the induction coil, thereby inducing the second sensor to heat the second type of consumer product.

[0011] In some embodiments, the controller stores: a mapping relationship between the electrical parameters and a first heating parameter, and a mapping relationship between the electrical parameters and a second heating parameter, wherein the first heating parameter corresponds to the first type of consumer product, and the second heating parameter corresponds to the second type of consumer product.

[0012] In some embodiments, the first heating parameter includes the second frequency, and the second heating parameter includes the third frequency.

[0013] In some embodiments, the electrical parameters include resonant current, resonant voltage, or quality factor. In some embodiments, the aerosol generating apparatus further includes an airflow sensor, and the controller, in response to triggering by the airflow sensor, controls the power supply to provide a drive signal of a first frequency to the induction coil.

[0014] In some embodiments, when the receiving cavity receives a first type of consumer product containing a first sensor, after the controller determines that the operating frequency is a second frequency in response to the triggering of the airflow sensor, it further controls the power supply to provide a drive signal of the second frequency to the induction coil to induce the first sensor to heat up; when the receiving cavity receives a second type of consumer product containing a second sensor, after the controller determines that the operating frequency is a third frequency in response to the triggering of the airflow sensor, it no longer controls the power supply to provide a drive signal of the third frequency to the induction coil in response to the continuous triggering of the airflow sensor.

[0015] In some embodiments, the electrical parameters include resonant current. The step of determining the operating frequency based on the electrical parameters and a preset reference value, and controlling the power supply to provide a drive signal to the induction coil according to the operating frequency, thereby inducing the sensor to heat up, includes:

[0016] If the resonant current is greater than a preset current threshold, the controller controls the power supply to provide a second frequency drive signal to the induction coil, thereby inducing the first sensor to heat the first type of consumer product.

[0017] If the resonant current is less than a preset current threshold, the controller controls the power supply to provide a third frequency drive signal to the induction coil, thereby inducing the second sensor to heat the second type of consumer product.

[0018] In some embodiments, the electrical parameters include resonant current. The step of determining the operating frequency based on the electrical parameters and a preset reference value, and controlling the power supply to provide a drive signal to the induction coil according to the operating frequency, thereby inducing the sensor to heat up, includes:

[0019] If the resonant current falls within the first preset current range, the controller controls the power supply to provide a second frequency drive signal to the induction coil, thereby inducing the first sensor to heat the first type of consumer product.

[0020] If the resonant current falls within the second preset current range, the controller controls the power supply to provide a third frequency drive signal to the induction coil, thereby inducing the second sensor to heat the second type of consumer product.

[0021] In some embodiments, the number of the first frequencies is multiple, the electrical parameters include resonant current, and the step of determining the operating frequency based on the electrical parameters and a preset reference value, and controlling the power supply to provide a drive signal to the induction coil according to the operating frequency, thereby inducing the sensor to heat up, includes:

[0022] If the resonant currents corresponding to multiple first frequencies are all greater than a preset current threshold, the controller is used to control the power supply to provide a second frequency drive signal to the induction coil, thereby inducing the first sensor to heat the first type of consumer product.

[0023] If the resonant currents corresponding to multiple first frequencies are all less than a preset current threshold, the controller controls the power supply to provide a third frequency drive signal to the induction coil, thereby inducing the second sensor to heat the second type of consumer product.

[0024] In some embodiments, the number of the first frequencies is multiple, the electrical parameters include resonant current, and the step of determining the operating frequency based on the electrical parameters and a preset reference value, and controlling the power supply to provide a drive signal to the induction coil according to the operating frequency, thereby inducing the sensor to heat up, includes:

[0025] If multiple resonant currents corresponding to the first frequency fall within the first preset current range, the controller is used to control the power supply to provide a second frequency driving signal to the induction coil, thereby inducing the first sensor to heat the first type of consumer product.

[0026] If multiple resonant currents corresponding to the first frequency fall within the second preset current range, the controller controls the power supply to provide a third frequency drive signal to the induction coil, thereby inducing the second sensor to heat the second type of consumer product.

[0027] In some embodiments, the preset current threshold is 3A.

[0028] In some embodiments, the first preset current range is 2A to 3A, and the second preset current range is 4.5A to 6.5A.

[0029] In some embodiments, the controller is further configured to, after controlling the power supply to provide a drive signal of a first frequency to the induction coil, detect or calculate electrical parameters of the consumer product originating from the induction coil at preset time intervals.

[0030] In some embodiments, the aerosol generating apparatus further includes a current detection circuit disposed in the current loop between the power supply and the induction coil, the current detection circuit being configured to detect the current value of the current loop.

[0031] In some embodiments, the aerosol generating apparatus further includes:

[0032] An inverter circuit is disposed between the power supply and the induction coil to convert a drive signal of a first frequency provided by the power supply into an alternating current signal flowing through the induction coil.

[0033] The capacitor, together with the induction coil, forms an LC oscillation circuit.

[0034] At least one embodiment of this application provides a drive control method for an aerosol generating device, the aerosol generating device including a receiving cavity with an opening for receiving a consumer product containing a sensor through the opening; an induction coil configured to generate a changing magnetic field, thereby inducing the sensor to heat up to heat the consumer product received in the receiving cavity; and a power supply electrically connected to the induction coil.

[0035] The method includes:

[0036] When the consumer product is present in the aerosol generating device, the power supply is controlled to provide a drive signal of a first frequency to the induction coil, and electrical parameters associated with the consumer product originating from the induction coil are detected or calculated.

[0037] The operating frequency is determined based on the electrical parameters and preset reference values, and the power supply is controlled to provide a drive signal to the induction coil according to the operating frequency, thereby inducing the sensor to heat up.

[0038] The beneficial effects of this application are as follows: the aerosol generating apparatus includes a receiving cavity with an open opening for receiving a consumer product containing a sensor through the opening; an induction coil configured to generate a changing magnetic field, thereby inducing the sensor to heat up to heat the consumer product received in the receiving cavity; a power supply electrically connected to the induction coil; and a controller; wherein the controller is configured to control the power supply to provide a drive signal of a first frequency to the induction coil when the consumer product is present in the aerosol generating apparatus, and to detect or calculate electrical parameters of the consumer product associated with the induction coil; determine the operating frequency based on the electrical parameters and a preset reference value, and control the power supply to provide a drive signal to the induction coil according to the operating frequency, thereby inducing the sensor to heat up, thereby enabling the determination of the operating frequency of the consumer product and improving the heating effect of the consumer product. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the specific embodiments of this application, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0040] Figure 1 This is a schematic diagram of the structure of an aerosol generating device provided in an embodiment of this application;

[0041] Figure 2 This is a schematic diagram of another aerosol generating device provided in the embodiments of this application;

[0042] Figure 3 This is a schematic flowchart of a drive control method for an aerosol generation device provided in an embodiment of this application. Detailed Implementation

[0043] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0044] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0045] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0046] One embodiment of this application provides an aerosol generation system for generating aerosols. In some embodiments, the aerosol generation system may include two or more parts that are separate from or interchangeable with each other, which, when combined, form a complete combined use state of the aerosol generation system and enable the corresponding user operation to generate aerosols.

[0047] In some embodiments, the aerosol generation system includes an aerosol generation device that can be selectively combined with at least two different types of consumer products for use together. For example, in some embodiments, the aerosol generation device can be selectively combined with either a first type of consumer product or a second type of consumer product to form an aerosol generation system to generate aerosols.

[0048] In some embodiments, the aerosol generating device is configured to receive only one consumer product at a time; for example, in some embodiments, the aerosol generating device can only receive one of a first type of consumer product or a second type of consumer product at a time, and cannot receive both of them simultaneously.

[0049] In some embodiments, the aerosol generating apparatus may include a detection unit configured to detect the presence of a first type or second type of consumer product inserted into the aerosol generating apparatus. In some specific alternative embodiments, the detection unit may include a color sensor to determine the type of consumer product by detecting its color. For example, in other variations, the aerosol generating apparatus may determine the type of consumer product by detecting the physical characteristics of electronic components within the product. These physical characteristics may include, for example, one or more of the following: resistance, inductance, voltage, capacitance, magnetism, etc., of the electronic components in the consumer product.

[0050] Alternatively, in some specific implementations, the first type of consumer product or the second type of consumer product may each have different heating elements; the aerosol generating device may determine the type of consumer product by detecting the characteristics of the heating elements in the consumer product.

[0051] In some embodiments, the first type of consumer product may include an atomizer that stores a liquid matrix and vaporizes at least one component of the liquid matrix to generate an aerosol. In some embodiments, the liquid matrix may include glycerol, propylene glycol, etc., which can be heated and vaporized to generate an aerosol.

[0052] In some embodiments, the second type of consumer product may include a solid aerosol-generating article, which is heated to cause at least one component of the solid aerosol-generating article to volatilize or release, forming an inhalable aerosol. In some embodiments, the solid aerosol-generating article preferably uses a tobacco-containing material that releases volatile compounds from a matrix upon heating; or it may be a non-tobacco material suitable for electrically heated smoking after heating. In some specific embodiments, the aerosol-generating article preferably uses a solid matrix, which may include one or more of the following: vanilla leaves, dried flowers, volatile aromatic herbs, tobacco leaves, homogenized tobacco, expanded tobacco, powders, granules, fragments, strips, or sheets; or the solid matrix may contain additional tobacco or non-tobacco volatile aroma compounds to be released when the matrix is ​​heated.

[0053] Please see Figure 1 This application provides an embodiment of an aerosol generating device 100. According to... Figure 1 In the illustrated embodiment, the aerosol generating apparatus 100 includes: a receiving cavity 110 having an opening 111 for receiving a consumer product containing a sensor through the opening 111; an induction coil 120 configured to generate a changing magnetic field to induce the sensor to heat up, thereby heating the consumer product received in the receiving cavity 110; a power supply 130 electrically connected to the induction coil 120; and a controller 140 electrically connected to the power supply 130, configured to control the power supply 130 to provide a drive signal of a first frequency to the induction coil 120 when the consumer product is present in the aerosol generating apparatus 100, and to detect or calculate electrical parameters of the consumer product associated with the induction coil 120; wherein the controller 140 is further configured to determine an operating frequency based on the electrical parameters and a preset reference value, and to control the power supply 130 to provide a drive signal to the induction coil 120 at the operating frequency, thereby inducing the sensor to heat up.

[0054] In some embodiments, the aerosol generating device 100 induces heating of a consumer product by generating a changing magnetic field that passes through the receiving cavity 110; specifically, the consumer product may be provided with an induction heating element that can be heated by the changing magnetic field when the consumer product is received in the receiving cavity 110, thereby consuming the consumer product to generate aerosol.

[0055] according to Figure 1 As shown, the aerosol generating device 100 includes a proximal end 11 and a distal end 12 that are opposite to each other in the longitudinal direction; in use, the proximal end 11 is the end for receiving consumer products such as atomizers or aerosol generating articles.

[0056] The receiving cavity 110 is arranged adjacent to the proximal end 11 and extends longitudinally along the aerosol generating device 100. The receiving cavity 110 has an opening 111 located at the proximal end 11 in the longitudinal direction; in use, consumer products such as atomizers or aerosol generating articles can be received into or removed from the receiving cavity 110 through the opening 111.

[0057] An induction coil 120 is arranged around a receiving cavity 110. The induction coil 120 is electrically connected to a power supply 130, thereby generating a changing magnetic field within the receiving cavity 120 when an alternating current flows through the induction coil 130. In some embodiments, the induction coil 120 has approximately 5 to 15 turns; and the induction coil 120 has an axial length of approximately 5 to 15 mm.

[0058] In some embodiments, the power supply 130 includes a rechargeable battery cell for outputting power; and the battery cell is arranged close to the distal end 12.

[0059] The controller 140 is integrated on a circuit board. In some embodiments, the circuit on the circuit board includes a capacitor, which, together with the induction coil 120, forms an LC resonant circuit. The controller 140 is used to drive the LC resonant circuit to oscillate at a predetermined frequency to generate an alternating current flowing through the induction coil 120, thereby causing the induction coil 120 to generate a changing magnetic field that can penetrate the receiving cavity 110.

[0060] In some embodiments, the frequency of the alternating current supplied by the controller 140 to the induction coil 120 is between 80 kHz and 2000 kHz; more specifically, the frequency can be in the range of approximately 200 kHz to 500 kHz.

[0061] When the atomizer is received in the receiving chamber 110, the airflow sensor 150 is used to sense the airflow generated by the user inhaling the atomizer. Based on the sensing result of the airflow sensor 150, the controller 140 controls the power supplied to the atomizer so that the atomizer atomizes the liquid matrix to generate an aerosol.

[0062] A charging interface 160 is provided for charging a rechargeable battery cell; and the charging interface 160 is disposed between the battery cell and the distal end 12.

[0063] In some other embodiments, the aerosol generating apparatus 100 further includes user-operable input elements to generate input signals; the aerosol generating apparatus 100 then controls the heating of the aerosol-generated article based on the user's input signals. In some alternative embodiments, the input elements are selected from mechanical buttons, membrane buttons, mechanical switches, rotary encoders, dials, knobs, capacitive touch buttons, resistive touch buttons, joysticks, sliders, trigger buttons, touch screens, and magnetic switches.

[0064] In some embodiments, the receiving cavity 110 is configured to selectively receive one of a first type of consumer product containing a first sensor and a second type of consumer product containing a second sensor through an opening 111; the operating frequency includes a second frequency and a third frequency, and when the first type of consumer product is received in the receiving cavity 110, the controller 140 controls the power supply 130 to provide a drive signal of the second frequency to the induction coil 120, thereby inducing the first sensor to heat the first type of consumer product; when the second type of consumer product is received in the receiving cavity 110, the controller 140 controls the power supply 130 to provide a drive signal of the third frequency to the induction coil 120, thereby inducing the second sensor to heat the second type of consumer product.

[0065] The first frequency is the identification frequency and is stored in the aerosol generating device 100. When the aerosol generating device 100 starts heating, the controller 140 controls the power supply 130 to provide a drive signal of the first frequency to the induction coil 120 to excite the LC oscillation circuit for identifying the first type of consumer product and the second type of consumer product.

[0066] In some exemplary embodiments, the first frequency can be determined experimentally.

[0067] Specifically, when the first type of consumer product is received in the receiving cavity 110, in response to the start signal received by the aerosol generating device, the control power supply 130 provides a drive signal of the test frequency to the induction coil 120, and detects the first loop impedance associated with the first type of consumer product; when the first type of consumer product is replaced with a second type of consumer product, in response to the start signal received by the aerosol generating device, the control power supply 130 provides a drive signal of the test frequency to the induction coil 120, and detects the second loop impedance associated with the second type of consumer product, obtaining a set of test data formed by the test frequency, the first loop impedance, and the second loop impedance; the control power supply 130 provides several test frequencies to the induction coil 120, and the above test steps are repeated to obtain several sets of test data; the first frequency is determined based on the several sets of test data.

[0068] In some specific embodiments, several test frequencies are provided within a preset frequency range by frequency sweeping. For example, the preset frequency range is 0.9MHz to 1.1MHz, and the step length is set to 0.02MHz. A first type of consumer product is received in the receiving cavity 110. In response to the start signal received by the aerosol generating device, the power supply 130 provides a drive signal of 0.9MHz test frequency to the induction coil 120, and the first loop impedance associated with the first type of consumer product is detected. The first type of consumer product is removed, and a second type of consumer product is received in the receiving cavity 110. In response to the start signal received by the aerosol generating device, the power supply 130 provides a drive signal of 0.9MHz test frequency to the induction coil 120, and the second loop impedance associated with the second type of consumer product is detected, obtaining a first set of test data formed by the test frequency, the first loop impedance, and the second loop impedance. The first type of consumer product is received in... Within the receiving cavity 110, in response to the start signal received by the aerosol generating device, the control power supply 130 provides a drive signal with a test frequency of 0.92MHz to the induction coil 120, and detects the first loop impedance associated with the first type of consumer product; the first type of consumer product is removed and the second type of consumer product is received within the receiving cavity 110, and in response to the start signal received by the aerosol generating device, the control power supply 130 provides a drive signal with a test frequency of 0.92MHz to the induction coil 120, and detects the second loop impedance associated with the second type of consumer product, obtaining a second set of test data formed by the test frequency, the first loop impedance, and the second loop impedance; this process is repeated, step by step, increasing the test frequency, until the frequency sweep of the preset frequency range ends, obtaining several sets of test data; the first frequency is determined based on the several sets of test data.

[0069] In other specific embodiments, several specific test frequencies are provided, such as 0.9MHz, 0.95MHz, 1.0MHz, 1.05MHz, and 1.1MHz. The process for determining the first frequency is similar to that in the above embodiments. Please refer to the relevant implementation schemes, which will not be repeated here.

[0070] In some embodiments, a first frequency is determined based on several sets of test data by the following steps: calculating the difference between the first loop impedance and the second loop impedance in each set of test data; and selecting the test frequency in the set of test data with the largest difference as the first frequency.

[0071] In other embodiments, the first frequency is determined based on several sets of test data by the following steps: calculating the difference between the first loop impedance and the second loop impedance in each set of test data; sorting the several sets of test data according to the magnitude of the difference; and selecting the test frequencies from a preset number of sets of test data as multiple first frequencies according to the sorting.

[0072] Because the first and second sensors have different construction and / or length and / or size and / or shape and / or permeability and / or material characteristics, the electrical parameters associated with the first and second type consumer products, which are also provided with a first frequency drive signal, are significantly different (as shown in Table 1). Table 1 shows the resonant current measured for 10 first type consumer products and 10 second type consumer products at a first frequency of 1.02 MHz.

[0073]

[0074] Table 1

[0075] Therefore, the first type of consumer product and the second type of consumer product can be identified by electrical parameters. Thus, the controller 140 can control the power supply 130 to provide a second frequency drive signal to the induction coil 120, thereby inducing the first sensor to heat the first type of consumer product, or control the power supply 130 to provide a third frequency drive signal to the induction coil 120, thereby inducing the second sensor to heat the second type of consumer product.

[0076] In some specific embodiments, the second frequency is the resonant frequency of the induction coil 120 associated with the first type of consumer product when the first type of consumer product is received in the receiving cavity 110. The third frequency is the resonant frequency of the induction coil 120 associated with the second type of consumer product when the second type of consumer product is received in the receiving cavity 110.

[0077] The resonant frequency can be obtained through experimental testing or theoretical calculation.

[0078] In some specific embodiments, a first type of consumer product is received in the receiving cavity 110. In response to a start signal received by the aerosol generating device 100, the control power supply 130 provides a drive signal with a resonant test frequency to the induction coil 120, and detects the resonant voltage originating from the induction coil 120 associated with the first type of consumer product. The above steps are repeated by frequency sweeping to obtain several resonant voltages originating from the induction coil 120 associated with the first type of consumer product. The test frequency corresponding to the maximum resonant voltage is selected as the resonant frequency originating from the induction coil 120 associated with the first type of consumer product, i.e., the second frequency. Figure 2In the illustrated embodiment, the voltage across the AC resistance Rs of the first sensor equivalent to the primary coil is measured to be 80V when the 1.0MHz drive signal output by voltage source U1 is measured to be 90V when the 1.03MHz drive signal output by voltage source U1 is measured to be 90V when the 1.06MHz drive signal output by voltage source U1 is measured to be 100V when the 1.09MHz drive signal output by voltage source U1 is measured to be 110V when the 1.09MHz drive signal output by voltage source U1 is measured to be 110V when the 1.09MHz drive signal output by voltage source U1 is measured to be 110V when the 1.09MHz drive signal output by voltage source U1 is measured to be 110V. Thus, 1.09MHz is selected as the resonant frequency of the first type of consumer product, i.e., the second frequency.

[0079] The calculation process for the resonant frequency of the second type of consumer product derived from the induction coil 120 is the same as that for the resonant frequency of the first type of consumer product derived from the induction coil 120, and will not be repeated here.

[0080] In some embodiments, the controller 140 stores a mapping relationship between electrical parameters and a first heating parameter, and a mapping relationship between electrical parameters and a second heating parameter, wherein the first heating parameter corresponds to a first type of consumer product and the second heating parameter corresponds to a second type of consumer product.

[0081] In a further embodiment, the first heating parameter includes a second frequency, and the second heating parameter includes a third frequency.

[0082] When a first type of consumer product is received in the receiving cavity 110, in response to a start signal received by the aerosol generating device, the power supply 130 is controlled to provide a drive signal of a first frequency to the induction coil 120, and electrical parameters associated with the first type of consumer product originating from the induction coil 120 are detected or calculated; a mapping relationship between the electrical parameters and a second frequency is established and stored in the aerosol generating device 100; when a second type of consumer product is received in the receiving cavity 110, in response to a start signal received by the aerosol generating device, the power supply 130 is controlled to provide a drive signal of a first frequency to the induction coil 120, and electrical parameters associated with the second type of consumer product originating from the induction coil 120 are detected or calculated; a mapping relationship between the electrical parameters and a third frequency is established and stored in the aerosol generating device.

[0083] Based on the foregoing, the controller 140 is further configured to determine the operating frequency according to the mapping relationship between the electrical parameters and the second frequency, and control the power supply 130 to provide a drive signal to the induction coil 120 according to the operating frequency, thereby inducing the sensor to heat up.

[0084] In other embodiments, the first heating parameter and the second heating parameter also include power, energy, time-temperature curve, etc.

[0085] Based on this, in some embodiments, the controller 140 is also configured to call a first heating parameter or a second heating parameter according to the electrical parameters, thereby automatically matching the driving frequency, heating power, time-temperature curve, etc., so as to realize the adaptive selection of the heating mode corresponding to the first type of consumer product and the second type of consumer product without user operation.

[0086] In some embodiments, electrical parameters include resonant current, resonant voltage, or quality factor.

[0087] There is a linear relationship between resonant current and quality factor. After the resonant current is detected, the quality factor can also be calculated through the linear relationship between the resonant current and the quality factor.

[0088] In some embodiments, the controller 140, in response to the triggering of the airflow sensor 150, controls the power supply 130 to provide a drive signal of a first frequency to the induction coil 120.

[0089] When the receiving cavity 110 receives a first type of consumer product containing a first sensor, after the controller 140 determines the operating frequency to be a second frequency in response to the trigger of the airflow sensor 150, it further controls the power supply 130 to provide a drive signal of the second frequency to the induction coil 120 to induce the first sensor to heat up; when the receiving cavity 110 receives a second type of consumer product containing a second sensor, after the controller 140 determines the operating frequency to be a third frequency in response to the trigger of the airflow sensor 150, it no longer controls the power supply 130 to provide a drive signal of the third frequency to the induction coil 120 in response to the continuous triggering of the airflow sensor 150.

[0090] In other words, when the receiving cavity 110 receives a first-type consumer product containing a first sensor, the triggering of the airflow sensor 150 can control the power supply 130 to provide a second-frequency drive signal to the induction coil 120 to induce the first sensor to heat up; when the receiving cavity 110 receives a second-type consumer product containing a second sensor, the triggering of the airflow sensor 150 cannot control the power supply 130 to provide a third-frequency drive signal to the induction coil 120. That is, the airflow sensor 150 can not only determine the second frequency of the first-type consumer product, but also initiate heating of the first-type consumer product. The first triggering of the airflow sensor 150 can determine the third frequency of the second-type consumer product, but subsequent triggering of the airflow sensor 150 cannot initiate heating of the second-type consumer product. In other words, the airflow sensor 150 only initiates heating in response to the triggering of the first-type consumer product.

[0091] In some embodiments, the electrical parameters include resonant current. The operating frequency is determined based on the electrical parameters and a preset reference value. The power supply 130 is controlled to provide a drive signal to the induction coil 120 according to the operating frequency, thereby inducing the sensor to heat up. This includes: if the resonant current is greater than a preset current threshold, the controller 140 controls the power supply 130 to provide a drive signal of a second frequency to the induction coil 120, thereby inducing the first sensor to heat the first type of consumer product; if the resonant current is less than the preset current threshold, the controller 140 controls the power supply 130 to provide a drive signal of a third frequency to the induction coil 120, thereby inducing the second sensor to heat the second type of consumer product.

[0092] In other embodiments, there are multiple first frequencies, and the electrical parameters include resonant current. The operating frequency is determined based on the electrical parameters and a preset reference value. The power supply 130 is controlled to provide a drive signal to the induction coil 120 according to the operating frequency, thereby inducing the sensor to heat up. This includes: if the resonant current corresponding to multiple first frequencies is greater than a preset current threshold, the controller 140 controls the power supply 130 to provide a drive signal of a second frequency to the induction coil 120, thereby inducing the first sensor to heat the first type of consumer product; if the resonant current corresponding to multiple first frequencies is less than the preset current threshold, the controller 140 controls the power supply 130 to provide a drive signal of a third frequency to the induction coil 120, thereby inducing the second sensor to heat the second type of consumer product.

[0093] By sequentially exciting multiple electrical parameters at multiple first frequencies, the loop impedance of the consumer product can be calculated. Multiple loop impedances can more reliably identify the first type and the second type of consumer product, thereby reducing false judgments, improving the identification success rate, and ensuring that different types of consumer products operate at the optimal operating frequency to achieve better heating effects.

[0094] In some specific embodiments, the preset current threshold is 3A.

[0095] In some embodiments, the electrical parameters include resonant current. The operating frequency is determined based on the electrical parameters and a preset reference value. The power supply 130 is controlled to provide a drive signal to the induction coil 120 according to the operating frequency, thereby inducing the sensor to heat up. This includes: if the resonant current falls within a first preset current range, the controller 140 controls the power supply 130 to provide a drive signal of a second frequency to the induction coil 120, thereby inducing the first sensor to heat the first type of consumer product; if the resonant current falls within a second preset current range, the controller 140 controls the power supply 130 to provide a drive signal of a third frequency to the induction coil 120, thereby inducing the second sensor to heat the second type of consumer product.

[0096] In other embodiments, there are multiple first frequencies, and the electrical parameters include resonant current. The operating frequency is determined based on the electrical parameters and a preset reference value. The power supply 130 is controlled to provide a drive signal to the induction coil 120 according to the operating frequency, thereby inducing the sensor to heat up. This includes: if the resonant currents corresponding to multiple first frequencies all fall within a first preset current range, the controller 140 controls the power supply 130 to provide a drive signal of a second frequency to the induction coil 120, thereby inducing the first sensor to heat the first type of consumer product; if the resonant currents corresponding to multiple first frequencies all fall within a second preset current range, the controller 140 controls the power supply 130 to provide a drive signal of a third frequency to the induction coil 120, thereby inducing the second sensor to heat the second type of consumer product.

[0097] In some specific embodiments, the first preset current range is 2A to 3A, and the second preset current range is 4.5A to 6.5A.

[0098] In some embodiments, the controller 140 is further configured to detect or calculate electrical parameters associated with the consumer product originating from the induction coil 120 at preset intervals after the control power supply 130 provides a drive signal of a first frequency to the induction coil 120.

[0099] In some exemplary embodiments, the preset time is 10ms.

[0100] During the initial 0-10ms of heating initiated by the aerosol generating device 100, the current signal fluctuates significantly. The operating frequency determined by the control power supply 130 based on the resonant current collected during this period is unreliable and cannot guarantee that different types of consumer products will operate at their optimal operating frequency, thus affecting the heating effect. After 10ms, the current signal stabilizes, and this phase of the current signal can be collected as the resonant current associated with the consumer product originating from the induction coil 120. For example, after the controller 140 controls the power supply 130 to provide a first-frequency drive signal to the induction coil 120, it waits 100ms for data acquisition.

[0101] In some embodiments, please refer to Figure 2 The aerosol generating device 100 also includes a current detection circuit 170, which is disposed in the current loop between the power supply 130 and the induction coil 120. The current detection circuit 170 is configured to detect the resonant current of the current loop.

[0102] In a further embodiment, the aerosol generating device 100 further includes:

[0103] An inverter circuit 180 is disposed between a power supply 130 and an induction coil 120, and is used to convert a drive signal of a first frequency provided by the power supply 130 into an alternating current signal flowing through the induction coil 120.

[0104] Capacitor 190, together with induction coil 120, constitutes an LC oscillation circuit.

[0105] As one example, the aerosol generating device 100 employs a half-bridge inverter series resonant mode. Figure 2 The diagram shows a half-bridge inverter series resonant topology. The inverter circuit 180 is a half-bridge inverter circuit, including a first switch Q1 and a second switch Q2. The capacitor 190 is connected in series with the induction coil 120, and the inductor is equivalent to the AC resistance Rs of the primary coil.

[0106] In some embodiments, the power supply 130 includes a voltage source U1, and the current detection circuit 170 includes a current detection IC.

[0107] When the aerosol generating device 100 receives the consumer product, it forms a loop with the voltage source U1, the current detection circuit 170, the induction coil 120, and the capacitor 190. The loop impedance Z is calculated using the following formula:

[0108]

[0109] in, The impedance is 0 when the LC oscillator circuit is in resonance, at which point the circuit impedance Z = R. S This is a constant term when the LC oscillating circuit is not in a resonant state.

[0110] It should be noted that the AC resistance Rs of the sensor equivalent to the primary coil for different types of consumer products is unique, depending on the material, shape, weight, and relative position to the coil (such as spacing and coupling angle). Therefore, the loop impedance Z is also unique. The output voltage U of voltage source U1, the current detection circuit 170 detects the loop resonant current I, and the output voltage U, resonant current I, and loop impedance Z have the following relationship:

[0111]

[0112] It can be seen that when the voltage source U1 is a constant voltage source and the output voltage U is constant, the resonant current I and the loop impedance Z have an inverse proportional relationship. The resonant current I can characterize the loop impedance Z corresponding to the sensor of different types of consumer products.

[0113] The aerosol generating apparatus provided in this application includes an open receiving cavity for receiving a consumer product containing a sensor through the open cavity; an induction coil configured to generate a changing magnetic field, thereby inducing the sensor to heat up and heat the consumer product received in the receiving cavity; a power supply electrically connected to the induction coil; and a controller; wherein the controller is configured to control the power supply to provide a drive signal of a first frequency to the induction coil when the consumer product is present in the aerosol generating apparatus, and to detect or calculate electrical parameters of the consumer product associated with the induction coil; determine an operating frequency based on the electrical parameters and a preset reference value, and control the power supply to provide a drive signal to the induction coil according to the operating frequency, thereby inducing the sensor to heat up, thereby enabling the determination of the operating frequency of the consumer product and improving the heating effect of the consumer product.

[0114] Please see Figure 3 This application provides a driving control method for an aerosol generating device. The aerosol generating device includes a receiving cavity with an open opening for receiving a consumer product containing a sensor; an induction coil configured to generate a changing magnetic field, thereby inducing the sensor to heat up and heat the consumer product received in the receiving cavity; and a power supply electrically connected to the induction coil. Figure 3 As shown, the method includes:

[0115] Step S31: When the consumer product is present in the aerosol generating device, the control power supply provides a drive signal of a first frequency to the induction coil and detects or calculates electrical parameters related to the consumer product originating from the induction coil.

[0116] Step S32: Determine the operating frequency based on electrical parameters and preset reference values, and control the power supply to provide a drive signal to the induction coil according to the operating frequency, thereby inducing the sensor to heat up.

[0117] The above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An aerosol generating device, characterized in that, include: A receiving cavity with an open opening for receiving a consumer product containing a sensor through the opening; An induction coil configured to generate a changing magnetic field, thereby inducing the sensor to heat up in order to heat a consumer product received within the receiving cavity; A power source is electrically connected to the induction coil. A controller, electrically connected to the power supply, is configured to control the power supply to provide a drive signal of a first frequency to the induction coil when the consumer product is present in the aerosol generating device, and to detect or calculate electrical parameters of the consumer product associated with the induction coil. The controller is further configured to determine the operating frequency based on the electrical parameters and a preset reference value, and control the power supply to provide a drive signal to the induction coil according to the operating frequency, thereby inducing the sensor to heat up.

2. The aerosol generating apparatus according to claim 1, characterized in that, The receiving cavity is configured to selectively receive one of a first type of consumer product containing a first sensor and a second type of consumer product containing a second sensor through the opening. The operating frequency includes a second frequency and a third frequency. When the first type of consumer product is received in the receiving cavity, the controller controls the power supply to provide a drive signal of the second frequency to the induction coil, thereby inducing the first sensor to heat the first type of consumer product. When the second type of consumer product is received in the receiving cavity, the controller controls the power supply to provide a drive signal of the third frequency to the induction coil, thereby inducing the second sensor to heat the second type of consumer product.

3. The aerosol generating apparatus according to claim 2, characterized in that, The controller stores: The mapping relationship between the electrical parameters and the first heating parameter, and the mapping relationship between the electrical parameters and the second heating parameter, wherein the first heating parameter corresponds to the first type of consumer product, and the second heating parameter corresponds to the second type of consumer product.

4. The aerosol generating apparatus according to claim 3, characterized in that, The first heating parameter includes the second frequency, and the second heating parameter includes the third frequency.

5. The aerosol generating apparatus according to claim 1, characterized in that, The electrical parameters include resonant current, resonant voltage, or quality factor.

6. The aerosol generating apparatus according to any one of claims 2 to 5, characterized in that, The aerosol generating device further includes an airflow sensor, and the controller, in response to the triggering of the airflow sensor, controls the power supply to provide a drive signal of a first frequency to the induction coil.

7. The aerosol generating apparatus according to claim 6, characterized in that, When the receiving cavity receives a first type of consumer product containing a first sensor, after the controller determines the operating frequency to be a second frequency in response to the triggering of the airflow sensor, it further controls the power supply to provide a second frequency drive signal to the induction coil to induce the first sensor to heat up; when the receiving cavity receives a second type of consumer product containing a second sensor, after the controller determines the operating frequency to be a third frequency in response to the triggering of the airflow sensor, it no longer controls the power supply to provide a third frequency drive signal to the induction coil in response to the continuous triggering of the airflow sensor.

8. The aerosol generating apparatus according to claim 2, characterized in that, The electrical parameters include resonant current. The step of determining the operating frequency based on the electrical parameters and a preset reference value, and controlling the power supply to provide a drive signal to the induction coil according to the operating frequency, thereby inducing the sensor to heat up, includes: If the resonant current is greater than a preset current threshold, the controller controls the power supply to provide a second frequency drive signal to the induction coil, thereby inducing the first sensor to heat the first type of consumer product. If the resonant current is less than a preset current threshold, the controller controls the power supply to provide a third frequency drive signal to the induction coil, thereby inducing the second sensor to heat the second type of consumer product.

9. The aerosol generating apparatus according to claim 2, characterized in that, The electrical parameters include resonant current. The step of determining the operating frequency based on the electrical parameters and a preset reference value, and controlling the power supply to provide a drive signal to the induction coil according to the operating frequency, thereby inducing the sensor to heat up, includes: If the resonant current falls within the first preset current range, the controller controls the power supply to provide a second frequency drive signal to the induction coil, thereby inducing the first sensor to heat the first type of consumer product. If the resonant current falls within the second preset current range, the controller controls the power supply to provide a third frequency drive signal to the induction coil, thereby inducing the second sensor to heat the second type of consumer product.

10. The aerosol generating apparatus according to claim 2, characterized in that, The first frequency has multiple values, the electrical parameters include resonant current, and the step of determining the operating frequency based on the electrical parameters and a preset reference value, and controlling the power supply to provide a drive signal to the induction coil according to the operating frequency, thereby inducing the sensor to heat up, includes: If the resonant currents corresponding to multiple first frequencies are all greater than a preset current threshold, the controller is used to control the power supply to provide a second frequency drive signal to the induction coil, thereby inducing the first sensor to heat the first type of consumer product. If the resonant currents corresponding to multiple first frequencies are all less than a preset current threshold, the controller controls the power supply to provide a third frequency drive signal to the induction coil, thereby inducing the second sensor to heat the second type of consumer product.

11. The aerosol generating apparatus according to claim 2, characterized in that, The first frequency has multiple values, the electrical parameters include resonant current, and the step of determining the operating frequency based on the electrical parameters and a preset reference value, and controlling the power supply to provide a drive signal to the induction coil according to the operating frequency, thereby inducing the sensor to heat up, includes: If multiple resonant currents corresponding to the first frequency fall within the first preset current range, the controller is used to control the power supply to provide a second frequency driving signal to the induction coil, thereby inducing the first sensor to heat the first type of consumer product. If multiple resonant currents corresponding to the first frequency fall within the second preset current range, the controller controls the power supply to provide a third frequency driving signal to the induction coil, thereby inducing the second sensor to heat the second type of consumer product.

12. The aerosol generating apparatus according to claim 8 or 10, characterized in that, Its features are, The preset current threshold is 3A.

13. The aerosol generating apparatus according to claim 9 or 11, characterized in that, The first preset current range is 2A to 3A, and the second preset current range is 4.5A to 6.5A.

14. The aerosol generating apparatus according to claim 1, characterized in that, The controller is also configured to, after controlling the power supply to provide a drive signal of a first frequency to the induction coil, detect or calculate electrical parameters related to the consumer product originating from the induction coil at preset time intervals.

15. The aerosol generating apparatus according to claim 1, characterized in that, The aerosol generating device further includes a current detection circuit disposed in the current loop between the power supply and the induction coil, the current detection circuit being configured to detect the current value of the current loop.

16. The aerosol generating apparatus according to claim 15, characterized in that, The aerosol generating device further includes: An inverter circuit is disposed between the power supply and the induction coil to convert a drive signal of a first frequency provided by the power supply into an alternating current signal flowing through the induction coil. The capacitor, together with the induction coil, forms an LC oscillation circuit.

17. A drive control method for an aerosol generation device, characterized in that, The aerosol generating device includes a receiving cavity with an opening for receiving a consumer product containing a sensor through the opening; and an induction coil configured to generate a changing magnetic field, thereby inducing the sensor to heat up in order to heat the consumer product received in the receiving cavity. A power source is electrically connected to the induction coil. The method includes: When the consumer product is present in the aerosol generating device, the power supply is controlled to provide a drive signal of a first frequency to the induction coil, and electrical parameters associated with the consumer product originating from the induction coil are detected or calculated. The operating frequency is determined based on the electrical parameters and preset reference values, and the power supply is controlled to provide a drive signal to the induction coil according to the operating frequency, thereby inducing the sensor to heat up.

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