EP4458192A1 - Aerosolerzeugungsvorrichtung, steuerungsverfahren und steuerungsvorrichtung dafür sowie speichermedium - Google Patents

Aerosolerzeugungsvorrichtung, steuerungsverfahren und steuerungsvorrichtung dafür sowie speichermedium Download PDF

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Publication number
EP4458192A1
EP4458192A1 EP22919935.1A EP22919935A EP4458192A1 EP 4458192 A1 EP4458192 A1 EP 4458192A1 EP 22919935 A EP22919935 A EP 22919935A EP 4458192 A1 EP4458192 A1 EP 4458192A1
Authority
EP
European Patent Office
Prior art keywords
heating element
temperature
voltage value
terminal
electrically connected
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22919935.1A
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English (en)
French (fr)
Other versions
EP4458192A4 (de
Inventor
Xiangzhong LI
Yafei Li
Pengfei HUANG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Maishi Technology Co Ltd
Original Assignee
Shenzhen Merit Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Merit Technology Co Ltd filed Critical Shenzhen Merit Technology Co Ltd
Publication of EP4458192A1 publication Critical patent/EP4458192A1/de
Publication of EP4458192A4 publication Critical patent/EP4458192A4/de
Pending legal-status Critical Current

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    • 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
    • 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
    • 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
    • A24F40/57—Temperature control

Definitions

  • the present invention relates to the field of atomization technology, and particularly to an aerosol generation device, a control method and a control device thereof, and a storage medium.
  • aerosol atomization technology achieves the atomization by heating an aerosol-forming substrate via a heating element to generate aerosol.
  • the heating element needs to be maintained at a certain temperature in order to atomize the aerosol-forming substrate. Therefore, it is necessary to obtain the current temperature of the heating element as feedback and then perform heating control based on the current temperature. Accordingly, in order to achieve the reliable operation of the aerosol generation device, the temperature of the heating element needs to be acquired accurately.
  • An aerosol generation device including:
  • the detection assembly includes a reference resistor and a detection switch
  • control assembly includes:
  • the controller is configured to control the detection switch to be turned on when the PWM signal controls the power switch to be in the off state, and acquire the first voltage value and the second voltage value to determine the temperature of the heating element.
  • T K * V 2 V 1 ⁇ V 2 + b , where, T represents the temperature of the heating element, K represents a preset temperature coefficient, V1 represents the first voltage value, V2 represents the second voltage value, and b represents a preset correction constant.
  • a control method for an aerosol generation device includes a heating element, a power supply and a detection assembly, the heating element is configured to heat an aerosol-forming substrate to generate aerosol, the detection assembly is electrically connected to the heating element and the power supply respectively; the control method includes:
  • the detection assembly includes a reference resistor, a first terminal of the reference resistor is electrically connected to the power supply, and a second terminal of the reference resistor is electrically connected to the heating element;
  • the electrical parameter of the detection assembly includes a first voltage value at the first terminal of the reference resistor and a second voltage value at the second terminal of the reference resistor;
  • the determining the temperature of the heating element according to the preset corresponding relationship includes: determining the temperature of the heating element according to the first voltage value, the second voltage value and the corresponding relationship.
  • the aerosol atomization device further includes a power switch, a first terminal of the power switch is connected to the heating element, and a second terminal of the power switch is electrically connected to the power supply; the regulating the electric energy provided by the power supply to the heating element according to the temperature and the preset target temperature of the heating element includes:
  • the detection assembly further includes a detection switch, a first terminal of the detection switch is electrically connected to the power supply, and a second terminal of the detection switch is electrically connected to the first terminal of the reference resistor;
  • the control method further includes:
  • T K * V 2 V 1 ⁇ V 2 + b , where T represents the temperature of the heating element, K represents a preset temperature coefficient, V1 represents the first voltage value, V2 represents the second voltage value, and b represents a preset correction constant.
  • a control device for an aerosol generation device includes a heating element, a power supply, and a detection assembly, the heating element is configured to heat an aerosol-forming substrate to generate aerosol, the detection assembly is electrically connected to the heating element and the power supply respectively;
  • the control device includes:
  • An aerosol atomization device including:
  • a computer-readable storage medium on which a computer program is stored, the computer program, when executed by a processor, causes the processor to implement the steps of:
  • the detection assembly is electrically connected to the power supply and the heating element.
  • the resistance value may also increase, thereby causing the electrical parameter of the detection assembly electrically connected to the heating element to change. Accordingly, the temperature of the heating element can be determined through the corresponding relationship between the electrical parameter of the detection assembly and the temperature of the heating element, and then the electric energy provided by the power supply to the heating element is regulated according to the temperature and the preset target temperature of the heating element, to maintain the actual temperature of the heating element within the target temperature range, thereby implementing the accurate detection of the temperature.
  • connection in the following embodiments should be understood as “electrical connection”, “communication connection”, etc., if there is transmission of electrical signals or data between the connected objects.
  • an aerosol generation device which may include a heating element 110, a power supply 120, a detection assembly 130, and a control assembly 140.
  • the heating element 110 is configured to heat an aerosol-forming substrate to generate aerosol.
  • the heating element 110 may be a heating wire, which is equivalent to a resistor.
  • the power supply 120 is electrically connected to the heating element 110 and is configured to output electric energy to the heating element 110 to allow the heating element 110 to generate heat.
  • the detection assembly 130 is electrically connected to the heating element 110 and the power supply 120 respectively.
  • the control assembly 140 is electrically connected to the detection assembly 130, and is configured to acquire an electrical parameter of the detection assembly 130, determine a temperature of the heating element 110 according to a preset corresponding relationship, and regulate the electric energy provided by the power supply 120 to the heating element 110 according to the temperature and a preset target temperature of the heating element 110, to maintain the actual temperature of the heating element 110 within a target temperature range.
  • the corresponding relationship refers to the corresponding relationship between the electrical parameter of the detection assembly 130 and the temperature of the heating element 110.
  • the detection assembly 130 is electrically connected to the power supply 120 and the heating element 110. As the temperature of the heating element 110 increases, a resistance value thereof may also increase, thereby changing the electrical parameter of the detection assembly 130 electrically connected to the heating element 110. Accordingly, the temperature of the heating element 110 can be determined through the corresponding relationship between the electrical parameter of the detection assembly 130 and the temperature of the heating element 110. Afterwards, the electric energy provided by the power supply 120 to the heating element 110 is regulated according to the temperature and the preset target temperature of the heating element 110, to maintain the actual temperature of the heating element 110 within the target temperature range.
  • the electrical parameter of the detection assembly 130 may be a resistance value, a voltage value across both ends, a power, a current, etc.
  • a voltage value across the detection assembly 130 is taken as an example for description.
  • control assembly 140 can control a heating temperature of the heating element 110 by controlling the power outputted by the power supply 120 to the heating element 110 or a duration of the output, so that the heating element 110 is maintained at a temperature for stabilizing the atomization and generating the aerosol.
  • the power supply 120 may further have another connection path with the heating element 110, that is, when there is no need to perform the detection, the power supply 120 supplies power to the heating element through this path.
  • the resistance value of the heating element 110 may change with the temperature. As the temperature increases, the resistance value of the heating element 110 may also increase.
  • the control assembly 140 can keep the resistance value of the detection assembly 130 constant by limiting a power-on duration of the detection assembly 130. Based on the voltage value division principle, the voltage value across the detection assembly 130 may reflect the temperature of the heating element 110, and the temperature of the heating element 110 can be determined according to the voltage value across the detection assembly 130 and the preset corresponding relationship.
  • connection mode of the detection assembly 130, the heating element 110 and the power supply 120 as shown in FIG. 1 that the detection assembly 130 is arranged between the heating element 110 and the power supply 120
  • the detection assembly 130 it is also possible to arrange the detection assembly 130 between the heating element 110 and the ground, that is, any connection method that can form a voltage value divider structure between the detection assembly 130 and the heating element can be chosen, which is not limited to the connection mode as shown in FIG. 1 .
  • a voltage value divider circuit is formed by arranging the detection assembly 130 and the heating element 110. Since the voltage value across the detection assembly 130 depends on the resistance value of the heating element 110 and the resistance value of the detection assembly 130, when the temperature of the heating element 110 changes, the resistance value may also change accordingly, thereby causing the voltage value across the detection assembly 130 to change.
  • the temperature of the heating element 110 can be determined through the corresponding relationship between the voltage value across the detection assembly 130 and the temperature of the heating element 110, and then the electrical power supplied by the power supply 120 to the heating element 110 is regulated according to the temperature and the preset target temperature of the heating element 110, to maintain the actual temperature of the heating element 110 in the target temperature range, thereby implementing the accurate detection of the temperature.
  • the circuit design of the aerosol generation device provided in the present application is simpler and has lower cost. Compared to the direct detection of the resistance value of the heating element 110 to perform the temperature detection, since the detection assembly 130 is not affected by the temperature, the measurement accuracy is higher.
  • the detection assembly 130 may include: a reference resistor RS and a detection switch Q1.
  • a first terminal of the detection switch Q1 is electrically connected to the power supply 120, a second terminal of the detection switch Q1 is electrically connected to a first terminal of the reference resistor RS, and a control terminal of the detection switch Q1 is electrically connected to the control assembly 140.
  • a second terminal of the reference resistor RS is electrically connected to the heating element 110.
  • the electrical parameter is a voltage value across the reference resistor RS.
  • the control assembly 140 is configured to acquire a first voltage value V1 at the first terminal of the reference resistor RS and a second voltage value V2 at the second terminal of the reference resistor RS, and determine the temperature of the heating element 110 according to the first voltage value V1, the second voltage value V2 and the corresponding relationship.
  • the control assembly 140 is further configured to control the detection switch Q1 to be turned on or off to implement the turn-on or turn-off of the detection mode.
  • the voltage value outputted by the power supply is VS.
  • the control assembly 140 controls the detection switch Q 1 to be turned on, and the power supply provides power (i.e., the power supply voltage value VS) to the reference resistor RS and the heating element 110 connected in series.
  • the control assembly 140 acquires the voltage values at both ends of the reference resistor RS, namely the first voltage value V1 and the second voltage value V2.
  • the first voltage value V1 is the output voltage value of the power supply 120, so that the first voltage value V1 may be maintained within a relatively stable voltage value range, while the second voltage value V2 may be affected by the change in the resistance value of the heating element 110.
  • the second voltage value V2 can be configured to characterize the resistance value of the heating element 110, so that the current temperature of the heating element 110 can be determined according to the first voltage value V 1, the second voltage value V2 and the preset corresponding relationship.
  • control assembly 140 may acquire a plurality of groups of first voltage values V1 and second voltage values V2 in the detection mode, take an average value of the first voltage values and an average value of the second voltage values after filtering out maximum values and minimum values of the first voltage values V1 and the second voltage values V2, and finally determine the temperature of the heating element 110 by using the average value of the first voltage values V1 and the average value of the second voltage values V2, thereby reducing the detection error.
  • control assembly 140 controls the detection switch Q 1 to be turned off to cut off a branch where the reference resistor RS is located. At the moment, the power supply 120 supplies power to the heating element 110 through another branch.
  • the detection switch Q1 if the internal resistance of the detection switch Q1 is not much different from the resistance value of the heating element 110, the detection switch Q1, the reference resistor RS and the heating element form a series voltage value divider.
  • the first voltage value V1 may also change suddenly.
  • the first voltage value V1 and the second voltage value V2 are used together to perform the temperature detection, and the accuracy of identification can still be guaranteed.
  • the detection switch Q1 may be an electronic switch such as a triode, a metal oxide semiconductor (MOS) transistor, or an insulated-gate bipolar transistor (IGBT), etc.
  • MOS metal oxide semiconductor
  • IGBT insulated-gate bipolar transistor
  • the electrical parameter of the detection assembly 130 may also be the resistance value of the reference resistor RS, the power of the reference resistor RS, or the current flowing through the reference resistor RS.
  • control assembly 140 may include a power switch Q2 and a controller 141.
  • a first terminal of the power switch Q2 is connected to the heating element 110, and a second terminal of the power switch Q2 is electrically connected to the power supply 120.
  • the controller 141 is electrically connected to the control terminal of the detection switch Q1, the reference resistor RS, and the control terminal of the power switch Q2 respectively, and is configured to acquire a first voltage value V1 at the first terminal of the reference resistor RS and a second voltage value V2 at the second terminal of the reference resistor RS, determine the temperature of the heating element 110 according to the first voltage value V1, the second voltage value V2 and the corresponding relationship, and output a pulse width modulation (PWM) signal to the power switch Q2 according to the temperature and the preset target temperature of the heating element 110.
  • PWM pulse width modulation
  • the PWM signal is configured to control the power switch Q2 to periodically switch between the on and off states to maintain the actual temperature of the heating element 110 within the target temperature range.
  • the controller 141 can change the output power of the power supply 120 by changing a duty cycle of the PWM signal, thereby regulating the temperature of the heating element 110, and determining the temperature of the heating element 110 according to the first voltage value V1, the second voltage value V2 and the corresponding relationship.
  • the PWM signal is regulated to increase the output power of the power supply 120 and increase the temperature of the heating element 110.
  • the PWM signal is regulated to reduce the output power of the power supply 120 and reduce the temperature of the heating element 110, thereby implementing the precise control of the temperature.
  • the controller 141 is configured to control the detection switch Q1 to be turned on when the PWM signal controls the power switch Q2 to be in the off state, and acquire the first voltage value V1 and the second voltage value V2 to determine the temperature of the heating element 110.
  • the detection switch Q1 can be controlled to be turned on when the power switch Q2 is controlled by the PWM signal to be in the off state, thereby implementing the detection.
  • T K * V 2 V 1 ⁇ V 2 + b ; where, T represents the temperature of the heating element 110, K represents a preset temperature coefficient, V1 represents the first voltage value, V2 represents the second voltage value, and b represents a preset correction constant.
  • the temperature coefficient K and the correction constant b are preset by means of a pre-calibration and can be implemented in the production stage. Specifically, a plurality of temperature values of the heating element 110 in the heating process are measured, a first voltage value V1 and a second voltage value V2 corresponding to each temperature value are recorded, and the temperature coefficient K and the correction constant b are calculated according to the above relational expression, thereby implementing the presetting.
  • the aerosol generation device may include a heating element, a power supply, and a detection assembly.
  • the heating element is configured to heat an aerosol-forming substrate to generate the aerosol.
  • the detection assembly is electrically connected to the heating element and the power supply respectively.
  • the control method may include the following steps.
  • Step 401 an electrical parameter of the detection assembly is acquired.
  • Step 402 a temperature of the heating element is determined according to a preset corresponding relationship between the electrical parameter of the detection assembly and the temperature of the heating element.
  • Step 403 electric energy provided by the power supply to the heating element is regulated according to the temperature and a preset target temperature of the heating element, to maintain an actual temperature of the heating element within a target temperature range.
  • the detection assembly may include a reference resistor.
  • a first terminal of the reference resistor is electrically connected to the power supply, and a second terminal of the reference resistor is electrically connected to the heating element.
  • a voltage value across the detection assembly may include a first voltage value at the first terminal of the reference resistor and a second voltage value at the second terminal of the reference resistor.
  • the step of determining the temperature of the heating element according to the preset corresponding relationship may include: the temperature of the heating element is determined according to the first voltage value, the second voltage value and the corresponding relationship.
  • the aerosol atomization device may further include a power switch.
  • a first terminal of the power switch is connected to the heating element, and a second terminal of the power switch is electrically connected to the power supply.
  • the step of regulating the electric energy provided by the power supply to the heating element according to the temperature and the preset target temperature of the heating element may include: a PWM signal is output to the power switch according to the temperature and the preset target temperature of the heating element.
  • the PWM signal is configured to control the power switch to periodically switch between on and off states to maintain the actual temperature of the heating element within the target temperature range.
  • the detection assembly may further include a detection switch.
  • a first terminal of the detection switch is electrically connected to the power supply, and a second terminal of the detection switch is electrically connected to the first terminal of the reference resistor.
  • control method may further include the following steps.
  • Step 501 it is determined whether the power switch is in the off state according to the PWM signal.
  • Step 502 when the power switch is in the off state, the detection switch is controlled to be turned on.
  • Step 503 when the power switch is in the on state, the detection switch is controlled to be turned off.
  • T K * V 2 V 1 ⁇ V 2 + b ; where T represents the temperature of the heating element, K represents the preset temperature coefficient, V1 represents the first voltage value, V2 represents the second voltage value, and b represents the preset correction constant.
  • steps in the flow charts of FIG. 4 to FIG. 5 are displayed sequentially as indicated by arrows, these steps are not definitely executed sequentially in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order limitation for the execution of these steps, and these steps may be executed in other orders. Moreover, at least part of the steps in FIGS. 4 to 5 may include multiple steps or multiple stages. These steps or stages are not definitely performed at the same time, but can be performed at different moments. The execution order of these steps or stages is not definitely sequential, but can be performed in turns or alternately with other steps or at least part of the steps or stages in other steps.
  • a control device 600 for an aerosol generation device may include a heating element, a power supply, and a detection assembly.
  • the heating element is configured to heat an aerosol-forming substrate to generate aerosol.
  • the detection assembly is electrically connected to the heating element and the power supply respectively.
  • the control device may include:
  • the modules in the above-mentioned control device for the aerosol generation device may be implemented in whole or in part by software, hardware or a combination thereof.
  • the above modules may be embedded in or independent of a processor in a computer device in the form of hardware, or may be stored in a memory in the computer device in the form of software, so that the processor can invoke and execute operations corresponding to the above modules.
  • the division of modules in the embodiments of the present invention is schematic and is merely a logical function division. There may be other division modes in actual implementations.
  • an aerosol atomization device which may include: a heating element, a power supply, a detection assembly, and a control assembly.
  • the heating element is configured to heat an aerosol-forming substrate to generate aerosol.
  • the power supply is electrically connected to the heating element.
  • the detection assembly is electrically connected to the heating element and the power supply respectively.
  • the control assembly may include a processor and a memory storing a computer program, and the processor, when executing the computer program, implements the following steps of:
  • the processor when executing the computer program, may further implement the following step of: determining the temperature of the heating element according to the first voltage value, the second voltage value and the corresponding relationship.
  • the processor when executing the computer program, may further implement the following step of: outputting a PWM signal to the power switch according to the temperature and the preset target temperature of the heating element.
  • the PWM signal is configured to control the power switch to periodically switch between on and off states to maintain the actual temperature of the heating element within the target temperature range.
  • the processor when executing the computer program, may further implement the following steps of:
  • a computer-readable storage medium on which a computer program is stored.
  • the computer program when executed by a processor, may cause the processor to implement the following steps of:
  • the computer program when executed by the processor, may cause the processor to further implement the following step of: determining the temperature of the heating element according to the first voltage value, the second voltage value and the corresponding relationship.
  • the computer program when executed by the processor, may cause the processor to further implement the following step of: outputting a PWM signal to the power switch according to the temperature and the preset target temperature of the heating element.
  • the PWM signal is configured to control the power switch to periodically switch between on and off states to maintain the actual temperature of the heating element within the target temperature range.
  • the computer program when executed by the processor, may cause the processor to further implement the following steps of:
  • any reference to memory, storage, database or other media used in the embodiments provided in the present application may include at least one of a non-transitory memory and a transitory memory.
  • the non-transitory memory may include a Read-Only Memory (ROM), a magnetic tape, a floppy disk, a flash memory or an optical storage, etc.
  • the transitory memory may include a Random Access Memory (RAM) or an external cache memory.
  • the RAM may be in various forms, such as a static random access memory (SRAM) or a dynamic random access memory (DRAM), etc.
  • the aerosol generation device may be a heat-not-burn electronic cigarette
  • the aerosol-forming substrate may be a solid aerosol-forming substrate 200.
  • the solid aerosol-forming substrate 200 is inserted into the aerosol generation device and heated to generate aerosol for inhalation by a user.
  • the aerosol generation device may be configured to use a liquid aerosol-forming substrate for atomization.
  • a liquid storage chamber 150 configured to receive the aerosol-forming substrate may be provided in the aerosol generation device, and the heating element may heat the aerosol-forming substrate in the liquid storage chamber to generate the aerosol for inhalation by the user.

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  • Control Of Resistance Heating (AREA)
EP22919935.1A 2022-01-14 2022-11-21 Aerosolerzeugungsvorrichtung, steuerungsverfahren und steuerungsvorrichtung dafür sowie speichermedium Pending EP4458192A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210044758.XA CN114376275A (zh) 2022-01-14 2022-01-14 气溶胶产生装置及其控制方法、控制装置和存储介质
PCT/CN2022/133129 WO2023134302A1 (zh) 2022-01-14 2022-11-21 气溶胶产生装置及其控制方法、控制装置和存储介质

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EP4458192A1 true EP4458192A1 (de) 2024-11-06
EP4458192A4 EP4458192A4 (de) 2025-04-09

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EP (1) EP4458192A4 (de)
JP (1) JP2024546395A (de)
KR (1) KR20240126063A (de)
CN (1) CN114376275A (de)
WO (1) WO2023134302A1 (de)

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