CN117547071A - Aerosol generating device and control method - Google Patents
Aerosol generating device and control method Download PDFInfo
- Publication number
- CN117547071A CN117547071A CN202210933506.2A CN202210933506A CN117547071A CN 117547071 A CN117547071 A CN 117547071A CN 202210933506 A CN202210933506 A CN 202210933506A CN 117547071 A CN117547071 A CN 117547071A
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- aerosol
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- value
- heater
- resistive heater
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000000443 aerosol Substances 0.000 title claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009529 body temperature measurement Methods 0.000 abstract description 2
- 241000208125 Nicotiana Species 0.000 description 11
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 11
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000005070 sampling Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000391 smoking effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 235000019505 tobacco product Nutrition 0.000 description 2
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 1
- 235000009499 Vanilla fragrans Nutrition 0.000 description 1
- 244000263375 Vanilla tahitensis Species 0.000 description 1
- 235000012036 Vanilla tahitensis Nutrition 0.000 description 1
- 235000019506 cigar Nutrition 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229960002715 nicotine Drugs 0.000 description 1
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/50—Control or monitoring
- A24F40/57—Temperature control
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/46—Shape or structure of electric heating means
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/50—Control or monitoring
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/50—Control or monitoring
- A24F40/51—Arrangement of sensors
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/50—Control or monitoring
- A24F40/53—Monitoring, e.g. fault detection
Abstract
The application discloses an aerosol generating device and a control method; wherein the aerosol-generating device comprises: a resistive heater for heating the aerosol-generating article; a controller configured to perform a calibration step to calibrate a correlation between a real-time temperature value and a real-time resistance value of the resistive heater; wherein the calibration step comprises: acquiring a room temperature and an initial resistance value of the resistance heater at the room temperature; and calibrating the correlation between the real-time temperature value and the real-time resistance value of the resistance heater according to the room temperature, the initial resistance value and the resistance temperature coefficient value of the resistance heater. The aerosol generating device can calibrate the correlation between the resistance which generates offset after a period of use and the temperature, and is beneficial to accurate temperature measurement.
Description
Technical Field
The embodiment of the application relates to the technical field of heating non-combustion aerosol generation, in particular to an aerosol generation device and a control method.
Background
Smoking articles (e.g., cigarettes, cigars, etc.) burn tobacco during use to produce tobacco smoke. Attempts have been made to replace these tobacco-burning products by making products that release the compounds without burning.
An example of such a product is a heating device that releases a compound by heating rather than burning a material. For example, the material may be tobacco or other non-tobacco products that may or may not contain nicotine. Heating devices are known for heating tobacco or non-tobacco products by means of a resistive heater; and determining the temperature of the resistive heater by monitoring the resistance value of the resistive heater based on a corresponding curve of the resistance value of the resistive heater and the temperature. In use, a curve of the resistance value versus temperature of the resistive heater is caused to shift as the resistive heater is subjected to cold and hot cycle shock, oxidation, or the like.
Disclosure of Invention
One embodiment of the present application provides an aerosol-generating device configured to heat an aerosol-generating article to generate an aerosol; comprising the following steps:
a resistive heater for heating the aerosol-generating article;
a controller configured to perform a calibration step to calibrate a correlation between a real-time temperature value and a real-time resistance value of the resistive heater; wherein the calibrating step comprises:
acquiring a room temperature and an initial resistance value of the resistance heater at the room temperature;
and calibrating the correlation between the real-time temperature value and the real-time resistance value of the resistance heater according to the room temperature, the initial resistance value and the resistance temperature coefficient value of the resistance heater.
In some embodiments, further comprising:
a battery cell for outputting power to the resistive heater to cause the resistive heater to heat an aerosol-generating article;
the controller is configured to: and in the heating process of the resistance heater, determining the real-time temperature value of the resistance heater according to the real-time resistance value of the resistance heater and the calibrated correlation.
In some embodiments, the controller is configured to:
generating a comparison table of the real-time temperature value and the real-time resistance value of the resistance heater according to the calibrated correlation;
and in the heating process of the resistance heater, the real-time temperature value of the resistance heater is determined by acquiring the real-time resistance value of the resistance heater and looking up a table through the comparison table.
In some embodiments, the controller is configured to perform the calibration step at a predetermined frequency, such as a frequency of at least once a day, once a week, once a month, once a quarter, or once a half year.
In some embodiments, the controller is configured to prevent the calibration step from being performed when the time from the end of heating the aerosol-generating article by the resistive heater is less than a predetermined length of time, for example, 10 minutes.
In some embodiments, the controller is configured to perform the calibration step when a predetermined time period, e.g. 10min, from the end of heating the aerosol-generating article by the resistive heater is reached.
In some embodiments, further comprising:
the controller is positioned on the circuit board;
a temperature sensor for acquiring the room temperature;
the temperature sensor is arranged to be located on the circuit board.
In some embodiments, further comprising:
a temperature sensor for acquiring the room temperature;
the temperature sensor is arranged to be in close proximity or fixed or bonded to a surface of the electrical cell and is used to monitor the temperature of the electrical cell as the electrical cell outputs power to the resistive heater.
In some embodiments, further comprising:
a standard resistor;
a first switching tube operatively connecting the resistive heater with the electrical core for causing the electrical core to output power to the resistive heater;
a second switching tube operable to change from a first state to a second state to connect the standard resistor in series with the resistive heater to form a detectable loop, and from the second state to the first state to disconnect the detectable loop;
the controller is configured to obtain an initial resistance value and/or a real-time resistance value of the resistive heater based on the electrical characteristics of the standard resistor in the detectable loop and the electrical characteristics of the resistive heater.
In some embodiments, the standard resistor and resistive heater in the detectable loop are in series;
the electrical characteristic includes a voltage.
In some embodiments, the resistance temperature coefficient value of the resistance heater is constant.
In some embodiments, the resistive heater is configured for insertion into an aerosol-generating article for heating;
the resistance heater includes:
a housing configured as a pin or needle;
a resistive heating coil housed and held within the housing.
Yet another embodiment of the present application also proposes an aerosol-generating device configured to heat an aerosol-generating article to generate an aerosol; comprising the following steps:
a resistive heater for heating the aerosol-generating article;
a controller configured to perform a calibration step to calibrate a correlation between a real-time temperature value and an electrical characteristic of the resistive heater; wherein the calibrating step comprises:
acquiring a room temperature and an initial value of an electrical characteristic of the resistance heater at the room temperature;
and calibrating the correlation between the real-time temperature value and the electrical characteristic of the resistance heater according to the room temperature, the initial value of the electrical characteristic and the resistance temperature coefficient value of the resistance heater.
In some embodiments, further comprising:
a battery cell for outputting electric power to the resistance heater;
a standard resistor;
a first switching tube operatively connecting the resistive heater with the electrical core for causing the electrical core to output power to the resistive heater;
a second switching tube operable to change from a first state to a second state to connect the standard resistor in series or parallel with the resistive heater to form a detectable loop, and from the second state to the first state to disconnect the detectable loop;
the controller is configured to obtain an initial value of an electrical characteristic of the resistive heater at the room temperature by way of the detectable loop.
In some embodiments, the electrical characteristic comprises at least one of a resistance value, a voltage value, a current value, a ratio of a voltage value of the resistance heater to a voltage value of the standard resistor, a ratio of a voltage value of the resistance heater to a voltage value of the battery cell, a ratio of a voltage value of the standard resistor to a voltage value of the battery cell, and a ratio of a current value of the resistance heater to a current value of the standard resistor.
Yet another embodiment of the present application also proposes a control method of an aerosol-generating device comprising:
a resistive heater for heating the aerosol-generating article;
the method comprises the following steps:
acquiring a room temperature and an initial resistance value of the resistance heater at the room temperature;
and calibrating the correlation between the real-time temperature value and the real-time resistance value of the resistance heater according to the room temperature, the initial resistance value and the resistance temperature coefficient value of the resistance heater.
The aerosol generating device can calibrate the correlation between the resistance which generates offset after a period of use and the temperature, and is beneficial to accurate temperature measurement.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.
FIG. 1 is a schematic diagram of an aerosol-generating device according to an embodiment;
FIG. 2 is a schematic diagram of the basic components in one embodiment of the circuit of FIG. 1;
FIG. 3 is a schematic diagram of a further embodiment of the circuit of FIG. 1;
FIG. 4 is a schematic diagram of a method of automatically calibrating a temperature dependence of a resistance value of a resistive heater in one embodiment.
Detailed Description
In order to facilitate an understanding of the present application, the present application will be described in more detail below with reference to the accompanying drawings and detailed description.
An embodiment of the present application proposes an aerosol-generating device, the configuration of which may be seen in fig. 1, comprising:
a chamber having an opening 50, an aerosol-generating article 1000, such as a cigarette, being removably received within the chamber through the opening 50;
a resistive heater 30, at least a portion of which extends within the chamber, thereby heating the aerosol-generating article 1000, such as a cigarette, to volatilize at least one component of the aerosol-generating article 1000 to form an aerosol for inhalation;
the battery cell 10 is a chargeable battery cell and can output direct current;
the circuit 20 is electrically connected to the rechargeable battery cell 10 by suitable electrical connections for conducting electrical current between the battery cell 10 and the heater 30.
In a preferred embodiment, the DC supply voltage provided by the battery cell 10 is in the range of about 2.5V to about 9.0V, and the amperage of the DC current that the battery cell 10 can provide is in the range of about 2.5A to about 20A.
In a preferred embodiment, the resistive heater 30 is generally in the shape of a pin or needle or cylinder or rod, which is advantageous for insertion into the aerosol-generating article 1000. Meanwhile, the heater 30 may have a length of about 12 to 19 mm, and a diameter of 2.0 to 2.6 mm.
And, after assembly, the pin or needle-like resistive heater 30, having approximately a sharp or tapered free front end, is exposed within the chamber for ease of insertion into the aerosol-generating article 1000; and the resistive heater 30 also has a distal end facing away from the free front end for being held or retained by the aerosol-generating device for mounting and securing.
Or in still other variations, the resistive heater 30 is configured to be chamber-surrounding, such as tubular in shape; the tubular resistive heater 30 of this kind heats the aerosol-generating article 1000 from the outer periphery by surrounding the outer surface of the aerosol-generating article 1000.
Further in an alternative implementation, the aerosol-generating article 1000 preferably employs tobacco-containing materials that release volatile compounds from a matrix upon heating; or may be a non-tobacco material capable of being heated and thereafter adapted for electrical heating for smoking. The aerosol-generating article 1000 preferably employs a solid matrix, which may comprise one or more of powders, granules, shredded strips, ribbons or flakes of one or more of vanilla leaves, tobacco leaves, homogenized tobacco, expanded tobacco; alternatively, the solid substrate may contain additional volatile flavour compounds, either tobacco or non-tobacco, to be released when the substrate is heated.
Further fig. 2 shows a schematic diagram of the structure of the circuit 20 in one embodiment, the circuit 20 comprising:
a switching tube 222 for conducting a current between the resistive heater 30 and a voltage output terminal, e.g., a positive electrode, of the battery cell 10, i.e., for supplying power to the resistive heater 30;
the MCU controller 223 controls the power supplied to the resistance heater 30 by controlling the on or off of the switching tube 222;
the standard voltage dividing resistor 224 is used for forming a detection loop with the resistance heater 30, so that the MCU controller 223 can detect the electrical characteristic parameters of the resistance heater 30. The electrical characteristic parameters typically include voltage, current, resistance, etc. of the resistive heater 30; the MCU controller 223 then obtains the temperature of the resistive heater 30 based on the sampled electrical characteristics. In a specific implementation, for example, the standard voltage dividing resistor 224 and the resistive heater 30 form a series voltage division, and the MCU controller 223 samples the voltage value of the point b between the standard voltage dividing resistor 224 and the resistive heater 30, and then performs the series voltage division by the formula Vbat/vb= (R 30 +R 224 )/R 30 The resistance value of the resistance heater 30 can be calculated. Wherein Vbat is the supply voltage provided by the circuit 20 to the detection loop, and is generally the output voltage of the battery cell 10; vb is the sampled voltage at site b; r is R 30 A real-time resistance value for the resistive heater 30; r is R 224 Is the resistance value of the standard voltage dividing resistor 224. And then based on the correlation curve of the resistance value and the temperature of the resistance heater 30, the real-time temperature of the resistance heater 30 can be calculated and obtained.
Or in still other variant embodiments, the real-time resistance value R of the resistive heater 30 is based on the above partial pressure formula 30 Is replaceable by Vbat/Vb, in yet other embodiments, the MCU controller 223 establishes a correlation between one of the voltage of the resistive heater 30, the current, the ratio of the voltage value of the resistive heater 30 to the voltage value of the cell 10, or the ratio of the voltage value of the resistive heater 30 to the voltage value of the standard voltage dividing resistor 224; then detecting the initial value of at least one of the above voltage, current, ratio of the voltage value of the resistance heater 30 to the voltage value of the battery cell 10 or the ratio of the voltage value of the resistance heater 30 to the voltage value of the standard voltage dividing resistor 224 at room temperature; and according to TCR, replacing the resistance value as the calibration parameter of the real-time temperature value, and then detecting heatingAt least one of the real-time voltage value of the resistance heater 30, the real-time current, the real-time ratio of the voltage value of the resistance heater 30 to the voltage value of the battery cell 10, or the real-time ratio of the voltage value of the resistance heater 30 to the voltage value of the standard voltage dividing resistor 224 is performed in the process, so as to determine the current real-time temperature.
And further according to the implementation of fig. 2, the detection loop formed by the conduction of the switching tube Q1 is formed by the standard voltage dividing resistor 224 and the resistive heater 30. In practice, the switching tube Q1 is located between the voltage output of the cell 10, for example, the positive pole, and the standard voltage divider resistor 224. When the switching tube 222 is turned on, the switching tube Q1 is in an off state for supplying power to heat the resistance heater 30; when the switching tube 222 is turned off, the switching tube Q1 is in an on state, and a series voltage division detection loop is formed for sampling or detecting the resistance value of the resistance heater 30.
Or in yet another variant, a detection loop is formed by a standard resistor operatively connected in parallel with the resistive heater 30 through a switching tube, the resistance value is calculated by sampling or detecting the current value of the resistive heater 30 in the detection loop in practice, etc.
In yet another embodiment of the present application, the circuit 20 further comprises:
the temperature sensor 225 may be directly mounted on a circuit board, such as a PCB board, on which the carrier circuit 20 is located. The temperature sensor 225 is used to sense the temperature of the environment, i.e., the initial temperature value of the resistive heater 30 when heating is not activated, otherwise known as the ambient temperature or cold temperature. The temperature sensor 225 is, for example, PT1000 or a thermocouple.
Or in a preferred implementation, the above temperature sensor 225 may be attached or affixed or bonded to the surface of the cell 10; sensing cold temperature when the resistive heater 30 is inactive or unheated, and also as sensing the temperature of the cell 10 when the resistive heater 30 is heating or active, is advantageous for overheat protection of the cell 10. And, the temperature sensor 225 is connected with the MCU controller 223, so that the MCU controller 223 can sample and acquire the sensing result of the temperature sensor 225 in use.
Yet another embodiment of the present application further proposes a method for automatically calibrating a stored temperature-dependent resistance value curve of the resistive heater 30 by the MCU controller 223, the method comprising the steps of:
s10, the temperature sensor 225 monitors and acquires the cold temperature or the room temperature T 0 ；
S20, sampling or monitoring the initial resistance R of the resistance heater 30 at room temperature or in a cold state when the resistance heater 30 is not in operation or heating 0 The method comprises the steps of carrying out a first treatment on the surface of the Of course, in a preferred embodiment, the initial resistance R 0 The method is capable of being obtained and calculated and determined through the partial pressure monitoring loop connected in series;
s30, updating or calibrating a correlation curve of the resistance value and the temperature of the resistance heater 30 based on a calculation formula of the resistance temperature coefficient of the resistance heater 30.
Wherein, the calculation formula of the temperature coefficient of resistance is:
after the calculation formula is further converted, the correlation between the calibrated real-time resistance value and the real-time temperature value is obtained as follows:
where TCR is the temperature coefficient of resistance of the resistive heater 30; r is a real-time resistance value, and T is a real-time temperature value.
In the above formula, the temperature coefficient of resistance TCR of the resistive heater 30 is mainly determined by the material, and the temperature coefficient of resistance TCR is substantially constant for a given resistive heater 30; then the new initial resistance value R is re-acquired at intervals according to the preset frequency 0 And a cold temperature T 0 The real-time resistance and the real-time temperature of the resistance heater 30 can be calibrated by using the calculation formula of the temperature coefficient of resistance TCRCorrelation of values.
After calibration, the MCU controller 223 in heating use can accurately calculate and determine the real-time temperature of the resistive heater 30 through a formula by sampling the real-time resistance value of the resistive heater 30.
Or after calibration, recalculating a comparison table for obtaining a real-time resistance value and a real-time temperature value according to the correlation between the calibrated resistance and the temperature, and storing the comparison table in the MCU controller 223; the MCU controller 223 can then accurately determine the real-time temperature of the resistive heater 30 by looking up a table after sampling the real-time temperature value of the resistive heater 30 during heating use.
In practice, the automatic calibration of the correlation curves of the resistance values and the temperatures in the steps S10 to S30 is performed according to the preset frequency. For example, when the usage time of the aerosol-generating device reaches the preset time, the MCU controller 223 performs the above steps S10 to S30 to calibrate the relationship or the comparison table between the real-time temperature value and the real-time resistance value. For another example, in some implementations, to ensure that the resistive heater 30 has the same cold temperature as the cell 10 or circuit board, a calibration procedure may be initiated after the resistive heater 30 has been heated for a period of time; for example greater than 30 minutes, or greater than 120 minutes, from the time at which the last resistive heater 30 was operated. And, the frequency of calibration may be set to be once per day, or once per week, or once per month, or once per quarter, or once per half year; because the resistance value of the resistive heater 30 changes or shifts more slowly. In some embodiments, when the MCU controller 223 performs the calibration steps of steps S10-S30 above, the end time from the last heating of the aerosol-generating article 1000 by the resistive heater 30 is up to 10 minutes; it is advantageous to calibrate the resistive heater 30 after it has cooled sufficiently to room temperature. Alternatively, when the end time from heating the aerosol-generating article 1000 is up to 10 minutes, meaning that it has not been completely cooled, the calibration may be prevented from being performed.
Or in yet other embodiments, the resistive heater 30 heats the aerosol-generating article 1000 for a predetermined length of time for suction; the heating period of each heating is then the puff length of the aerosol-generating article 1000, i.e. the user has completed a puff of one aerosol-generating article 1000. Accordingly, the frequency of calibration may be based on the amount of the resistive heater 30 heating the aerosol-generating article 1000. For example, when the number of heated aerosol-generating articles 1000 reaches 100, 200 or 400, meaning that the user has drawn the corresponding number of aerosol-generating articles 1000, it is advantageous to correspondingly perform the calibration step.
Or after each calibration, the latest initial resistance value R obtained in the calibration process is also used for 0 And the corresponding cold temperature T 0 Writing into the memory cell of MCU controller 223 to replace the original initial resistance value R 0 And the corresponding cold temperature T 0 。
In this embodiment, the resistive heater 30 is generally in the shape of a pin or needle. Or in further embodiments, the resistive heater 30 includes: a pin or needle shaped housing, and a resistive heating coil positioned within the housing. Details regarding the configuration of the resistive heater 30 with the housing and resistive heating coil are provided in particular by the applicant, for example, in chinese patent application publication No. CN114642278A, which is incorporated herein by reference in its entirety.
Or in yet other implementations, the resistive heater 30 has a generally tubular shape. Or in further embodiments, the resistive heater 30 includes: a tubular electrically insulating liner, and a resistive heating mesh surrounding or wrapped or wound around the electrically insulating liner. Details regarding the configuration of the resistive heater 30 with resistive heating mesh are provided in particular by the applicant, for example, in chinese patent application publication No. CN207341183U, which is incorporated herein by reference in its entirety.
It should be noted that the description and drawings of the present application show preferred embodiments of the present application, but are not limited to the embodiments described in the present application, and further, those skilled in the art can make modifications or changes according to the above description, and all such modifications and changes should fall within the scope of the appended claims.
Claims (18)
1. An aerosol-generating device configured to heat an aerosol-generating article to generate an aerosol; characterized by comprising the following steps:
a resistive heater for heating the aerosol-generating article;
a battery cell for outputting power to the resistive heater to cause the resistive heater to heat an aerosol-generating article;
a controller configured to perform a calibration step to calibrate a correlation between a real-time temperature value and a real-time resistance value of the resistive heater; wherein the calibrating step comprises:
acquiring a room temperature and an initial resistance value of the resistance heater at the room temperature;
and calibrating the correlation between the real-time temperature value and the real-time resistance value of the resistance heater according to the room temperature, the initial resistance value and the resistance temperature coefficient value of the resistance heater.
2. The aerosol-generating device of claim 1, further comprising:
the controller is configured to: and in the heating process of the resistance heater, determining the real-time temperature value of the resistance heater according to the real-time resistance value of the resistance heater and the calibrated correlation.
3. The aerosol-generating device of claim 2, wherein the controller is configured to:
generating a comparison table of the real-time temperature value and the real-time resistance value of the resistance heater according to the calibrated correlation;
and in the heating process of the resistance heater, the real-time temperature value of the resistance heater is determined by acquiring the real-time resistance value of the resistance heater and looking up a table through the comparison table.
4. An aerosol-generating device according to any of claims 1 to 3, wherein the controller is configured to perform the calibration step at a predetermined frequency.
5. An aerosol-generating device according to any of claims 1 to 3, wherein the controller is configured to prevent the calibration step from being performed when the time from the end of heating the aerosol-generating article by the resistive heater is less than a predetermined length of time.
6. An aerosol-generating device according to any of claims 1 to 3, wherein the controller is configured to perform the calibration step when a predetermined time period has elapsed since the end of heating the aerosol-generating article by the resistive heater.
7. An aerosol-generating device according to any of claims 1 to 3, wherein the controller is configured to perform the calibration step when the number of aerosol-generating articles heated by the resistive heater reaches a predetermined number.
8. An aerosol-generating device according to any one of claims 1 to 3, further comprising:
the controller is positioned on the circuit board;
a temperature sensor for acquiring the room temperature;
the temperature sensor is arranged to be located on the circuit board.
9. An aerosol-generating device according to any one of claims 1 to 3, further comprising:
a temperature sensor for acquiring the room temperature;
the temperature sensor is arranged to be in close proximity or fixed or bonded to a surface of the electrical cell and is used to monitor the temperature of the electrical cell as the electrical cell outputs power to the resistive heater.
10. An aerosol-generating device according to any one of claims 1 to 3, further comprising:
a standard resistor;
a first switching tube operatively connecting the resistive heater with the electrical core for causing the electrical core to output power to the resistive heater;
a second switching tube operable to change from a first state to a second state to connect the standard resistor in series with the resistive heater to form a detectable loop, and from the second state to the first state to disconnect the detectable loop;
the controller is configured to obtain an initial resistance value and/or a real-time resistance value of the resistive heater based on the electrical characteristics of the standard resistor in the detectable loop and the electrical characteristics of the resistive heater.
11. The aerosol-generating device of claim 10, wherein the standard resistor and resistive heater in the detectable circuit are in series;
the electrical characteristic includes a voltage.
12. An aerosol-generating device according to any one of claims 1 to 3, wherein the resistance temperature coefficient value of the resistive heater is constant.
13. An aerosol-generating device according to any of claims 1 to 3, wherein the resistive heater is configured for insertion into an aerosol-generating article for heating;
the resistance heater includes:
a housing configured as a pin or needle;
a resistive heating coil housed and held within the housing.
14. An aerosol-generating device configured to heat an aerosol-generating article to generate an aerosol; characterized by comprising the following steps:
a resistive heater for heating the aerosol-generating article;
a controller configured to perform a calibration step to calibrate a correlation between a real-time temperature value and an electrical characteristic of the resistive heater; wherein the calibrating step comprises:
acquiring a room temperature and an initial value of an electrical characteristic of the resistance heater at the room temperature;
and calibrating the correlation between the real-time temperature value and the electrical characteristic of the resistance heater according to the room temperature, the initial value of the electrical characteristic and the resistance temperature coefficient value of the resistance heater.
15. The aerosol-generating device of claim 14, further comprising:
a battery cell for outputting electric power to the resistance heater;
a standard resistor;
a first switching tube operatively connecting the resistive heater with the electrical core for causing the electrical core to output power to the resistive heater;
a second switching tube operable to change from a first state to a second state to connect the standard resistor in series or parallel with the resistive heater to form a detectable loop, and from the second state to the first state to disconnect the detectable loop;
the controller is configured to obtain an initial value of an electrical characteristic of the resistive heater at the room temperature by way of the detectable loop.
16. The aerosol-generating device of claim 15, wherein the electrical characteristic comprises at least one of a resistance value, a voltage value, a current value, a ratio of a voltage value of the resistive heater to a voltage value of the standard resistor, a ratio of a voltage value of the resistive heater to a voltage value of the battery cell, a ratio of a voltage value of the standard resistor to a voltage value of the battery cell, and a ratio of a current value of the resistive heater to a current value of the standard resistor.
17. A control method of an aerosol-generating device, the aerosol-generating device comprising:
a resistive heater for heating the aerosol-generating article;
characterized in that the method comprises:
obtaining room temperature;
acquiring an initial resistance value of the resistance heater at the room temperature;
and calibrating the correlation between the real-time temperature value and the real-time resistance value of the resistance heater according to the room temperature, the initial resistance value and the resistance temperature coefficient value of the resistance heater.
18. The control method according to claim 17, characterized by further comprising:
acquiring a real-time resistance value of the heating process of the resistance heater;
according to the real-time resistance value and the calibrated correlation;
a real-time temperature value of the resistive heater is determined.
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| CN202210933506.2A CN117547071A (en) | 2022-08-04 | 2022-08-04 | Aerosol generating device and control method |
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| CN202210933506.2A CN117547071A (en) | 2022-08-04 | 2022-08-04 | Aerosol generating device and control method |
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