US20230138171A1 - Aerosol generation apparatus and control method therefor - Google Patents

Aerosol generation apparatus and control method therefor Download PDF

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Publication number
US20230138171A1
US20230138171A1 US17/914,772 US202117914772A US2023138171A1 US 20230138171 A1 US20230138171 A1 US 20230138171A1 US 202117914772 A US202117914772 A US 202117914772A US 2023138171 A1 US2023138171 A1 US 2023138171A1
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Prior art keywords
heater
heating
preset
time
energy generated
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Pending
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US17/914,772
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English (en)
Inventor
Shengjie Hu
Xiaodong Sun
Zhongli Xu
Yonghai Li
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Shenzhen FirstUnion Technology Co Ltd
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Shenzhen FirstUnion Technology Co Ltd
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Assigned to SHENZHEN FIRST UNION TECHNOLOGY CO., LTD. reassignment SHENZHEN FIRST UNION TECHNOLOGY CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HU, Shengjie, LI, Yonghai, SUN, XIAODONG, XU, Zhongli
Publication of US20230138171A1 publication Critical patent/US20230138171A1/en
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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
    • A24F40/57—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
    • A24F40/50—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
    • A24F40/40—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
    • 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
    • A24F40/20—Devices using solid inhalable precursors

Definitions

  • the present application relates to the technical field of smoking sets, and in particular relates to an aerosol generation apparatus and a control method therefor.
  • Articles (such as cigarettes, cigars, etc.) burn tobacco during use to produce tobacco smoke. Attempts have been made to provide alternatives to these articles that burn tobacco by making products that release compounds without burning. Examples of such products are so-called heat-not-burn products, also known as tobacco heating products or tobacco heating devices, which release compounds by heating a material without burning the material.
  • the material may be tobacco or other non-tobacco products or a combination, such as a blended mixture which may or may not contain nicotine.
  • a heater When a user smokes, a heater needing to be started to heat an aerosol generation substrate from an ambient temperature to an aerosol generation temperature that can form evaporant.
  • the aerosol generation temperature is generally 200° C.-400° C.
  • it is necessary to reach the aerosol generation temperature from the ambient temperature within a short time, and power requirements for heating and power supply components are very high, which may cause some problems.
  • a heating rod of a key-activated resistive heater of a certain brand when the user does not insert a cigarette into the heating rod, if a key is pressed or the key is touched by mistake, the heating rod starts the resistive heater for heating.
  • the resistive heater is in a high temperature working state, there is no cigarette in the heating rod to conduct heat therefor, and a heating component is in a dry-burning state, which is easy to damage the heating component, resulting in a significant reduction in the service life of the heating rod.
  • the present application provides an aerosol generation apparatus and a control method therefor, and aims to solve the problem about how to perform dry-burning detection on the aerosol generation apparatus.
  • a first aspect of the present application provides a control method for an aerosol generation apparatus, where the aerosol generation apparatus includes a heater for heating an aerosol generation substrate to generate an aerosol, and the method includes:
  • determining total energy generated by heating of the heater within a preset time and performing dry-burning detection according to the total energy generated by heating of the heater within the preset time, where the preset time is greater than or equal to duration when the temperature of the heater rises from an initial temperature to a preset target temperature.
  • a second aspect of the present application provides an aerosol generation apparatus.
  • the aerosol generation apparatus includes a heater and a controller, and the controller is configured to execute the control method for an aerosol generation apparatus according to the first aspect.
  • the problem of damage to a heating component when the heater is in a dry-burning state while a cigarette is not inserted into the aerosol generation apparatus is avoided. Therefore, user experience is improved.
  • FIG. 1 is a schematic structural diagram of an aerosol generation apparatus according to an embodiment of the present application
  • FIG. 2 is a schematic structural diagram of a cigarette according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a preheating curve of a heater according to an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a control method for an aerosol generation apparatus according to an embodiment of the present application
  • FIG. 5 is another schematic flowchart of a control method for an aerosol generation apparatus according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a hardware structure of a controller according to an embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of an aerosol generation apparatus according to an embodiment of the present application.
  • the aerosol generation apparatus 10 includes a battery, 101 , a controller 102 and a heater 103 .
  • the aerosol generation apparatus 10 has an interior space defined by a housing, and an aerosol generation article (e.g., a cigarette) can be inserted into the interior space of the aerosol generation apparatus 10 .
  • an aerosol generation article e.g., a cigarette
  • FIG. 1 Only elements, related to the present embodiment, of the aerosol generation apparatus 10 are shown in FIG. 1 . Accordingly, it should be understood by those skilled in the art related to this embodiment that the aerosol generation apparatus 10 may further include general elements in addition to those shown in FIG. 1 .
  • the battery 101 supplies electric power for operating the aerosol generation apparatus 10 .
  • the battery 101 can supply electric power to heat the heater 103 and can supply electric power needed to operate the controller 102 .
  • the battery 101 can supply electric power needed by a display, a sensor, a motor and the like provided in the aerosol generation apparatus 10 .
  • the battery 101 may be, but is not limited to, a lithium iron phosphate (LiFePO4) battery.
  • the battery 101 may be a lithium cobalt oxide (LiCoO2) battery or a lithium titanate battery.
  • the battery 101 may be a rechargeable battery or a disposable battery.
  • the aerosol generation apparatus 10 heats the heater 103 by the electric power supplied by the battery 101 .
  • the heater 103 raises the temperature of an aerosol generation substrate in the cigarette to generate an aerosol.
  • the generated aerosol is delivered to a user via a filter tip section of the cigarette for smoking.
  • the aerosol generation apparatus 10 can also heat the heater 103 even if the cigarette is not inserted into the aerosol generation apparatus 10 .
  • the heater 103 may be in a central heating manner (being in contact with the aerosol generation substrate by the periphery of a heating body or heating unit) or in a peripheral heating manner (the heating body or the heating unit wrapping the aerosol generation substrate), or the heater 103 may heat the aerosol generation substrate by means of one or more of thermal conduction, electromagnetic induction, chemical reaction, infrared action, resonance, photoelectric conversion, and photothermal conversion to generate the aerosol for smoking.
  • the controller 102 can control the overall operation of the aerosol generation apparatus 10 .
  • the controller 102 not only controls the operation of the battery 101 and the heater 103 , but also controls the operation of other elements in the aerosol generation apparatus 10 .
  • the controller 102 can determine whether the aerosol generation apparatus 10 can be operated by checking the status of the elements of the aerosol generation apparatus 10 .
  • the controller 102 includes at least one processor.
  • the processor may include a logic gate array, or may include a combination of a general purpose microprocessor and a memory storing a program executable in the microprocessor.
  • the controller 102 may include another type of hardware.
  • the controller 102 can control the operation of the heater 103 .
  • the controller 102 can control the amount of the electric power supplied to the heater 130 and the time for which the electric power is continuously supplied to the heater 103 such that the heater 103 is heated to a predetermined temperature or maintained at an appropriate temperature.
  • the controller 102 can check the status of the battery 101 (e.g., the remaining power of the battery 101 ) and, if necessary, can generate a notification signal.
  • the controller 102 can check whether the user smokes and smoking intensity, and can count the number of smoked cigarettes. In addition, the controller 102 can check the time for continuous operation of the aerosol generation apparatus 10 .
  • the aerosol generation apparatus 10 may include general elements in addition to the battery 101 , the controller 102 and the heater 103 .
  • the aerosol generation apparatus 10 may include a display for outputting visual information or a motor for outputting tactile information.
  • the controller 102 can send information regarding the status of the aerosol generation apparatus 10 (e.g., whether the aerosol generation apparatus 10 can be used), information regarding the heater 103 (e.g., preheating start, preheating in progress, or preheating complete), information regarding the battery 101 (e.g., the remaining power of the battery 101 , whether the battery 101 can be used), information regarding reset of the aerosol generation apparatus 10 (e.g., reset time, reset in progress, or reset complete), information regarding cleaning of the aerosol generation apparatus 10 (e.g., cleaning time, need to clean, cleaning in progress, or cleaning complete), information regarding charging of the aerosol generation apparatus 10 (e.g., need to charge, charging in progress, or charging complete), information regarding smoking (e.g., the number of smoking times and smoking end notification), or information regarding safety (e.g., use time)
  • the aerosol generation apparatus 10 may include at least one input device (e.g., a key) used by the user to control functions of the aerosol generation apparatus 10 .
  • the user can perform various functions by using the input device of the aerosol generation apparatus 10 .
  • the desired function among the plurality of functions of the aerosol generation apparatus 10 can be performed by adjusting the number of times the user presses the input device (e.g., once or twice) or the time the user continues to press the input device (e.g., 0.1 s or 0.2 s).
  • the aerosol generation apparatus 10 can perform the function of heating the heater 103 , the function of adjusting the temperature of the heater 103 , the function of cleaning a space into which the cigarette is inserted, the function of checking whether the aerosol generation apparatus 10 can be operated, the function of displaying the remaining power (available electric power) of the battery 101 , and the function of resetting the aerosol generation apparatus 10 .
  • the functions of the aerosol generation apparatus 10 are not limited thereto.
  • FIG. 2 is a schematic structural diagram of a cigarette according to an embodiment of the present application.
  • a cigarette 20 includes a filter tip section 21 and a tobacco section 22 .
  • the tobacco section 22 includes an aerosol generation substrate.
  • the aerosol generation substrate is a substrate capable of releasing volatile compounds that can form an aerosol, and the volatile compounds can be released by heating the aerosol generation substrate.
  • the aerosol generation substrate may be a solid aerosol generation substrate.
  • the aerosol generation substrate may include solid and liquid components.
  • the aerosol generation substrate may include a tobacco-containing material containing volatile compounds with a tobacco flavor which are released from the substrate upon heating.
  • the aerosol generation substrate may include a non-tobacco material.
  • the aerosol generation substrate may further include an aerosol generation substance. Examples of suitable aerosol generation substances are glycerine and propylene glycol.
  • the aerosol produced by heating the tobacco section 22 is delivered to the user via the filter tip section 21 , and the filter tip section 21 may be a cellulose acetate filter tip.
  • the filter tip section 21 can be sprayed with flavoring liquid to provide fragrance, or separate fibers coated with the flavoring liquid can be inserted into the filter tip section 21 to improve the durability of the flavor delivered to the user.
  • the filter tip section 21 may also have a capsule of a spherical or cylindrical shape, which may contain the contents of flavoring substances.
  • the cigarette 20 may further include general components in addition to those shown in FIG. 2 , e.g., a cooling section for cooling the aerosol produced by heating the tobacco section 22 , such that the user can inhale the aerosol cooled to a suitable temperature.
  • a cooling section for cooling the aerosol produced by heating the tobacco section 22 , such that the user can inhale the aerosol cooled to a suitable temperature.
  • FIG. 3 is a schematic diagram of a preheating curve of a heater according to an embodiment of the present application.
  • a temperature curve of the heater 103 over time includes a heating phase and a heat preservation phase.
  • the temperature of the heater 103 is raised from an initial temperature T0 (or an ambient temperature) to a preset target temperature T1.
  • the preset target temperature T1 is set such that the desired volatile compounds vaporize from the aerosol generation substrate, and undesired compounds with higher vaporization temperatures do not vaporize.
  • the preset target temperature T1 may be 200° C.-400° C.
  • the temperature of the heater 103 is maintained at the preset target temperature T1 for a period of time, such that the aerosol generation substrate is sufficiently preheated and the smoking feeling of the user is improved.
  • the duration of the heating phase is t0-t1
  • the duration of the heat preservation phase is t1-t2
  • t0-t2 is a preheating time of the heater 103 .
  • the preheating time of the heater 103 is 5 s to 30 s.
  • FIG. 3 only shows a schematic diagram of a temperature curve related to this embodiment.
  • the heater 103 is in the smoking phase, that is, the user can smoke the aerosol generated by heating of the aerosol generation apparatus 10 .
  • the temperature of the heater 103 is maintained within a certain preset temperature range or at a certain preset temperature for a period of time.
  • FIG. 4 is a schematic flowchart of a control method for an aerosol generation apparatus according to an embodiment of the present application.
  • a controller 102 determines total energy generated by heating of a heater 103 within a preset time.
  • the preset time may be determined according to a preheating time of the heater 103 . As shown in FIG. 3 , the preset time is greater than or equal to duration t0-t1 when the temperature of the heater 103 rises from an initial temperature to a preset target temperature.
  • the preset time is less than or equal to the preheating time t0-t2 of the heater 103 .
  • the preset time is capable of being divided into one or more heating time periods according to heating power of the heater 103 .
  • the controller 102 determines energy generated by heating of the heater 103 within each heating time period according to the heating power of the heater 103 corresponding to each heating time period within the preset time, and then obtains the total energy generated by heating of the heater 103 within the preset time according to the energy generated by heating of the heater 103 within each heating time period.
  • the controller 102 controls the heating power (assuming the power is constant) supplied by a battery 101 to the heater 103 to be W1; and in the heat preservation phase t1-t2 of the heater 103 , the controller 102 controls the heating power (assuming the power is constant) supplied by the battery 101 to the heater 103 to be W2.
  • step S 12 the controller 102 performs dry-burning detection according to the total energy generated by heating of the heater 103 within the preset time.
  • the controller 102 compares the total energy generated by heating of the heater 103 within the preset time with a preset energy threshold, if the total energy generated by heating of the heater 103 within the preset time is less than the preset energy threshold, determines that dry-burning occurs; and otherwise, determines that no dry-burning occurs.
  • the preset energy threshold may be an experimental value or empirical value.
  • the heater 103 is used to preheat a cigarette 20 of a certain type, and the total energy Qn generated by the heater 103 heating such type of cigarette 20 within the preheating time t0-t2 is tested, and after several tests, an average value is obtained to serve as the preset energy threshold.
  • the controller 102 controls the heater 103 to stop heating, so as to prevent the heater 103 from being in a dry-burning state all the time, resulting in damage to the heater 103 . Furthermore, the user can be prompted that the heater 103 is in the dry-burning state by means of an indicator lamp or vibration.
  • the controller 102 controls the heater 103 to continue to perform the next phase, e.g., completing the heat preservation phase, entering a smoking phase, and so on.
  • FIG. 5 is another schematic flowchart of a control method for an aerosol generation apparatus according to an embodiment of the present application.
  • step S 21 in a heating phase t0-t1, a controller 102 controls a heater 103 to perform heating with first heating power.
  • the controller 102 controls the heater 103 to perform heating with constant heating power, and the first heating power may be the maximum heating power supplied by a battery 101 to the heater 103 under the control of the controller 102 .
  • a resistance value of the heater 103 may change with the change of temperature, resulting in that the heating power supplied to the heater 103 also changes. Therefore, furthermore, the controller 102 can also control the heater 103 to perform heating with the constant heating power by the following steps:
  • determining a real-time resistance of the heater 103 determining a real-time resistance of the heater 103 ; determining a real-time voltage supplied to the heater 103 according to the real-time resistance of the heater 103 and the first heating power; and adjusting a voltage supplied to the heater 103 to the real-time voltage.
  • the real-time resistance of the heater 103 can be determined by measuring the voltage applied to the heater 103 and the current flowing through the heater 103 .
  • step S 21 in the heat preservation phase t1-t2, the controller 102 controls the heater 103 to perform heating with second heating power, and linearly adjusts the second heating power according to a preset target temperature T1, where the second heating power is less than the first heating power.
  • the controller 102 determines the real-time resistance of the heater 103 , and determines a real-time temperature of the heater 103 according to the real-time resistance of the heater 103 .
  • the second heating power is linearly increased according to a first preset step value.
  • the second heating power is linearly decreased according to a second preset step value.
  • the resistance value of the heater 103 changes with the change of temperature.
  • the resistance value and temperature of the heating unit 101 can form a corresponding relationship between the resistance value and the temperature, and different temperatures correspond to different resistances. Therefore, the real-time temperature of the heater 103 can be determined by determining the real-time resistance of the heater 103 .
  • the first preset step value and the second preset step value may be the same.
  • FIG. 5 only shows the schematic flowchart of the control method for an aerosol generation apparatus related to this embodiment.
  • the heater 103 is in the smoking phase, that is, the user can smoke the aerosol generated by heating of the aerosol generation apparatus 10 .
  • the controller 102 controls the temperature of the heater 103 to be maintained within a certain preset temperature range or at a certain preset temperature for a period of time.
  • the controller 102 controls the heater 103 to enter the heating phase. Specifically, the controller 102 can control the heater 103 to perform heating with the constant heating power of 6 W. During the heating process of the heater 103 , the resistance value of the heater 103 may change with the change of temperature, resulting in that the heating power supplied to the heater 103 also changes. Therefore, the controller 102 determines the real-time resistance of the heater 103 , determines the real-time voltage supplied to the heater 103 according to the real-time resistance of the heater 103 and the constant heating power of 6 W, and adjusts the voltage supplied to the heater 103 to the real-time voltage.
  • the controller 102 controls the heater 103 to enter the heat preservation phase. Specifically, the controller 102 controls the heater 103 to perform heating with power less than the constant heating power of 6 W, for example, the heating power of 4 W. At the same time, the controller 102 determines the real-time resistance of the heater 103 , and determines the real-time temperature of the heater 103 according to the real-time resistance of the heater 103 .
  • the heating power of 4 W is linearly increased according to the preset step value of 0.05 W, that is, the controller 102 controls the heater 103 to perform heating with the power of 4.05 W, so as to reduce the temperature of the heater 103 and maintain the same at 350° C.
  • the heating power of 4 W is linearly decreased according to the preset step value of 0.05 W, that is, the controller 102 controls the heater 103 to perform heating with the power of 3.95 W, so as to raise the temperature of the heater 103 and maintain the same at 350° C.
  • the above preheating time is generally 20 s.
  • the controller 102 determines the total energy generated by heating of the heater 103 within the preheating time, and compares the total energy generated by heating of the heater 103 within the preheating time with a preset energy threshold, if the total energy generated by heating of the heater 103 within the preset time is less than the preset energy threshold, determines that dry-burning occurs; and otherwise, determines that no dry-burning occurs.
  • the controller 102 controls the heater 103 to stop heating, so as to prevent the heater 103 from being in a dry-burning state all the time, resulting in damage to the heater 103 . Furthermore, the user can be prompted that the heater 103 is in the dry-burning state by means of an indicator lamp or vibration.
  • the controller 102 controls the heater 103 to entering a smoking phase, and prompts the user to smoke.
  • FIG. 6 is a schematic diagram of a hardware structure of a controller 102 according to an embodiment of the present application. As shown in FIG. 6 , the controller 102 includes one or more processors 1021 and a memory 1022 . One processor 1021 is taken as an example in FIG. 6 .
  • the processor 1021 and the memory 1022 can be connected by a bus or in other ways, and connection by a bus is taken as an example in FIG. 6 .
  • the memory 1022 can be configured to store non-volatile software programs, non-volatile computer-executable programs and modules, such as program instructions/modules corresponding to the control method for an aerosol generation apparatus in embodiments of the present invention.
  • the processor 1021 executes the control method for an aerosol generation apparatus and data processing according to the above various embodiments by running non-volatile software programs, instructions and modules stored in the memory 1022 .
  • the memory 1022 may include a high-speed random access memory and may further include a non-volatile memory, e.g., at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state memory device.
  • the memory 1022 may optionally include memories located remotely with respect to the processor 1021 , and these remote memories can be connected to the processor 1021 via a network. Examples of the above network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.
  • the program instructions/modules are stored in the memory 1022 , and when executed by the one or more processors 1021 , execute the control method for an aerosol generation apparatus according to any of the above method embodiments, for example, so as to execute the control method for an aerosol generation apparatus and data processing according to each embodiment.
  • An embodiment of the present invention provides a non-transitory computer-readable storage medium, where the non-transitory computer-readable storage medium stores computer-executable instructions that cause an electronic device to execute the control method for an aerosol generation apparatus according to any one described above.
  • An embodiment of the present invention provides a computer program product, where the computer program product includes a computer program stored on a non-volatile computer-readable storage medium, and the computer program includes program instructions that, when executed by an electronic device, cause the electronic device to execute the control method for an aerosol generation apparatus according to any one described above.
  • unit modules illustrated as separate components may or may not be physically separate, and the components shown as unit modules may or may not be physical units, that is, may be located in one place, or may also be distributed over a plurality of network units. A part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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US17/914,772 2020-03-28 2021-03-26 Aerosol generation apparatus and control method therefor Pending US20230138171A1 (en)

Applications Claiming Priority (3)

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CN202010232894.2A CN113439881A (zh) 2020-03-28 2020-03-28 气溶胶生成装置及其控制方法
CN202010232894.2 2020-03-28
PCT/CN2021/083347 WO2021197232A1 (zh) 2020-03-28 2021-03-26 气溶胶生成装置及其控制方法

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EP (1) EP4129099A4 (zh)
JP (1) JP7503359B2 (zh)
KR (1) KR20220160110A (zh)
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WO (1) WO2021197232A1 (zh)

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KR20220160110A (ko) 2022-12-05
JP2023519691A (ja) 2023-05-12
WO2021197232A1 (zh) 2021-10-07
CN113439881A (zh) 2021-09-28
EP4129099A1 (en) 2023-02-08
JP7503359B2 (ja) 2024-06-20

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