Aerosol generating device and control method thereof

Abstract

The invention discloses an aerosol generating device and a control method thereof.The aerosol generating device comprises an atomization control circuit and an atomization core electrically connected with the atomization control circuit, the atomization control circuit comprises a controller, a switch unit and a filtering unit, and the controller is connected with the filtering unit through the switch unit; and the control unit is used for outputting a switch control signal to control the on-off of the switch unit so as to control the filtering unit to output the direct-current voltage with the required waveform, and the filtering unit is electrically connected with the atomization core. According to the aerosol generating device, the atomization control circuit which is electrically connected with the atomization core and comprises the controller, the switch unit and the filtering unit is arranged, the filtering unit is connected with the atomization core, and the controller is adopted to output the corresponding switch control signal to control the on-off state of the switch unit; therefore, the filtering unit is controlled to output the direct-current voltage signal with the required waveform, and the problem that the atomization core is burnt or the aerosol generating device generates peculiar smell due to the fact that the instantaneous power is too large when the output voltage waveform is a rectangular wave is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of aerosol generation, and in particular to an aerosol generating device and a control method thereof. Background Art

[0002] An aerosol generator is a product that heats an aerosol substrate to form an aerosol for users to inhale. Existing aerosol generators usually use a chopping method to output and control the atomization core. However, since the output waveform is a rectangular wave, the instantaneous power depends on the battery voltage. When the battery is fully charged, the instantaneous power is high, which is prone to core burnout or odor. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an aerosol generating device and a control method thereof, so as to control the voltage waveform output to the atomizer core, so as to avoid the problem of the atomizer core being stuck or the aerosol generating device producing odor due to excessive instantaneous power when the output voltage waveform is a rectangular wave.

[0004] In order to solve the above technical problems, the present invention provides an aerosol generating device, including an atomization control circuit and an atomization core, the atomization control circuit is electrically connected to the atomization core, the atomization control circuit includes a controller, a switch unit and a filter unit, the controller is connected to the filter unit through the switch unit, and is used to output a switch control signal to control the on and off of the switch unit, so as to control the filter unit to output a DC voltage of a required waveform, and the filter unit is electrically connected to the atomization core.

[0005] A further technical solution is: the switch control signal is a pulse width modulation signal or a pulse frequency modulation signal to control the on-time and off-time of the switch unit.

[0006] Its further technical solution is: the aerosol generating device also includes a power supply device for providing power, the power supply device is connected to the atomization core through the atomization control circuit, the power supply device is connected to the controller and the switch unit, the switch unit includes a switch tube, the controller is connected to the control end of the switch tube, one end of the switch tube is connected to the power supply device, and the other end of the switch tube is connected to the filter unit.

[0007] Its further technical solution is: the filtering unit includes a filtering capacitor, the power supply device is a battery, the battery, the switching tube and the filtering capacitor are connected in series to form a loop, the positive electrode of the battery is connected to one end of the switching tube, the other end of the switching tube is connected to the first end of the filtering capacitor, and the second end of the filtering capacitor is connected to the ground and the negative electrode of the battery.

[0008] Its further technical solution is: the atomization control circuit also includes a feedback unit, which is respectively connected to the filter unit and the controller, and is used to obtain the current output voltage output by the filter unit and feed it back to the controller, so that the controller adjusts the switch control signal according to the required voltage.

[0009] A further technical solution is: the atomization control circuit also includes a suction detection unit, which is connected to the controller and is used to detect airflow information and transmit it to the controller to determine whether a suction action occurs.

[0010] In order to solve the above technical problems, the present invention also provides a control method for an aerosol generating device, which is applied to the above aerosol generating device. The control method for the aerosol generating device includes the following steps: the controller outputs a switch control signal to the switch unit according to a preset initial switch control signal to control the on and off of the switch unit; the filter unit outputs a DC voltage of the required waveform to the atomization core according to the on and off of the switch unit.

[0011] Its further technical solution is: after the step that the filter unit outputs a DC voltage of a required waveform to the atomizer core according to the on-off of the switch unit, it also includes: when the controller determines that the DC voltage output by the filter unit does not meet the required voltage, the switch control signal is adjusted according to the required voltage and output to the switch unit to control the on-off of the switch unit.

[0012] Its further technical solution is: after the step that the filter unit outputs a DC voltage of a required waveform to the atomizer core according to the on-off of the switch unit, it also includes: the controller calculates the required voltage according to the resistance of the heating wire of the atomizer core obtained by detection and the required power, and adjusts the switch control signal according to the required voltage.

[0013] The beneficial technical effect of the present invention is that the aerosol generating device of the present invention is provided with an atomization control circuit including a controller, a switch unit and a filter unit electrically connected to the atomization core, and the filter unit is connected to the atomization core, so that the controller outputs a corresponding switch control signal to control the on and off of the switch unit, thereby controlling the filter unit to output a DC voltage signal of the required waveform, thereby avoiding the problem of the atomization core being stuck or the aerosol generating device generating odor due to excessive instantaneous power when the output voltage waveform is a rectangular wave, which is conducive to the mass production of the aerosol generating device, and can improve the user experience, with a simple circuit structure and low production cost. The control method of the aerosol generating device of the present invention also has the above functions and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0015] Figure 1 A schematic diagram of the framework of an aerosol generating device provided in an embodiment of the present invention;

[0016] Figure 2 A schematic diagram of the connection between the switch unit and the filter unit of the aerosol generating device provided in an embodiment of the present invention;

[0017] Figure 3 A schematic flow chart of a control method for an aerosol generating device provided in an embodiment of the present invention;

[0018] Figure 4 A schematic diagram of a specific flow chart of a method for controlling an aerosol generating device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1 As shown, Figure 1 A schematic framework diagram of an aerosol generating device provided in an embodiment of the present invention, wherein the aerosol generating device comprises an atomization control circuit 11 and an atomization core 12, wherein the atomization control circuit 11 is electrically connected to the atomization core 12, wherein the atomization control circuit 11 comprises a controller 111, a switch unit 112 and a filter unit 113, wherein the controller 111 is connected to the filter unit 113 via the switch unit 112, and is configured to output a switch control signal to control the on and off of the switch unit 112, so as to control the filter unit 113 to output a DC voltage of a desired waveform, wherein the filter unit 113 is electrically connected to the atomization core 12.

[0021] Among them, the controller 111 can be an MCU, and the aerosol generating device is provided with an atomization control circuit 11 including a controller 111, a switch unit 112 and a filter unit 113 which is electrically connected to the atomization core 12, and the filter unit 113 is connected to the atomization core 12, so that the controller 111 outputs a corresponding switch control signal to control the on and off of the switch unit 112, and then controls the filter unit 113 to output a DC voltage signal of a required waveform, so as to avoid the problem of the atomization core 12 being stuck or the aerosol generating device generating odor due to excessive instantaneous power when the output voltage waveform is a rectangular wave, which is conducive to the mass production of the aerosol generating device, and can improve the user experience, with a simple circuit structure and low production cost.

[0022] Specifically, in this embodiment, the switch control signal is a pulse width modulation signal to control the on-time and off-time of the switch unit 112. The control 111 outputs a pulse width modulation signal to the switch unit 112, and the pulse width can be used to control the on-time and off-time of the switch unit 112, so as to output a corresponding pulse voltage to the filter unit 113 through the switch unit 112, and the filter unit 113 outputs a DC voltage of a desired waveform after filtering, so as to control the operation of the atomizer core 12 through the DC voltage output by the filter unit 113.

[0023] Of course, in other embodiments, the switch control signal is a pulse frequency modulation signal to control the on-time and off-time of the switch unit 112. The controller 111 outputs a pulse frequency modulation signal to the switch unit 112, and the pulse frequency can be used to control the on-time and off-time of the switch unit 112, so as to output a corresponding pulse voltage to the filter unit 113 through the switch unit 112, and the filter unit 113 outputs a DC voltage of a desired waveform after filtering, so as to control the operation of the atomizer core 12 through the DC voltage output by the filter unit 113.

[0024] Specifically, the aerosol generating device further includes a power supply device 13 for providing power, the power supply device is connected to the atomization core 12 through the atomization control circuit 11, the power supply device 13 is connected to the controller 111 and the switch unit 112, the switch unit 112 includes a switch tube, the controller 111 is connected to the control end of the switch tube, one end of the switch tube is connected to the power supply device 13, and the other end of the switch tube is connected to the filter unit 113. The switch tube can be a MOS tube or a triode, and when the switch tube is a MOS tube, the controller 111 is connected to the gate of the MOS tube.

[0025] Specifically, in this embodiment, the atomization control circuit 11 further includes a feedback unit 114, which is connected to the filter unit 113 and the controller 111 respectively, and is used to obtain the current output voltage output by the filter unit 113 and feed it back to the controller 111, so that the controller 111 adjusts the switch control signal according to the required voltage. Among them, by setting the feedback unit 114, the current output voltage output by the filter unit 114 can be detected in real time and fed back to the controller 111, so that the controller 111 adjusts the switch control signal according to the required voltage and outputs it to the switch unit 112, so as to adjust the output of the switch unit 112 by adjusting the switch control signal, and then adjust the output of the filter unit 113, so that the voltage output by the filter unit 113 can be adjusted to the required voltage, with high accuracy and improved safety.

[0026] Preferably, in some embodiments, the feedback unit 114 is connected to the heating wire of the atomizer core 12, and is used to measure the resistance of the heating wire of the atomizer core 12 and feed it back to the controller 111, so that the controller 111 calculates the required voltage according to the required output power combined with the resistance of the heating wire and adjusts the switch control signal according to the required voltage. When the atomizer core 12 is required to output a constant power, the feedback unit 114 can detect the resistance of the heating wire of the atomizer core 12 and feed it back to the controller 111, so that the controller 111 calculates the required voltage according to the required output power combined with the resistance of the heating wire obtained by the detection.

[0027] Specifically, the atomization control circuit 11 further includes a suction detection unit 115, which is connected to the controller 111 and is used to detect airflow information and transmit it to the controller 111 to determine whether a suction action occurs. By setting the suction detection unit 115, the controller 111 is driven to output a switch control signal only when a suction action occurs.

[0028] Preferably, the atomization control circuit 11 further includes a display unit, which is connected to the controller 111 , and can be used to display the power level of the power supply device 13 and / or the remaining amount of the aerosol substrate of the atomization core 12 .

[0029] Based on the above design, when working, the controller outputs a switch control signal to the switch unit according to a preset initial switch control signal to control the on and off of the switch unit. The filter unit outputs a DC voltage of a required waveform to the atomizer core according to the on and off of the switch unit. The feedback unit obtains the current output voltage output by the filter unit and feeds it back to the controller, so that the controller adjusts the switch control signal according to the required voltage and outputs it to the switch unit, thereby adjusting the output of the switch unit by adjusting the switch control signal, and then adjusting the output of the filter unit, so that the voltage output by the filter unit can be adjusted to the required voltage, with high accuracy and improved safety.

[0030] Combination Figure 2 Specifically, the filtering unit 113 includes a filtering capacitor C4, and the power supply device 13 is a battery. Figure 2 The switch tube is simplified as a switch, denoted as S4, the battery, the switch tube and the filter capacitor C4 are connected in series to form a loop, the positive electrode of the battery is connected to one end of the switch tube, the other end of the switch tube is connected to the first end of the filter capacitor C4, and the second end of the filter capacitor C4 is connected to the ground and the negative electrode of the battery. Among them, the two ends of the filter capacitor C4 are used as the output ends of the filter unit 113, which are used to be connected to the atomizer core 12 to output the DC voltage of the required waveform to the atomizer core 12, and accurately control the operation of the atomizer core 12. Filtering is performed by the filter capacitor C4, the structure is simple, and the production cost is low. The waveform of the DC voltage output by the filter unit 113 is related to the frequency of the filter unit 113 and the switch control signal. It is filtered by the filter capacitor C4. When the capacitance value of the filter capacitor C4 is larger, the waveform of the corresponding output DC voltage is smaller; when the frequency of the switch control signal is higher, under the same waveform, the capacitance value of the required filter capacitor C4 is smaller.

[0031] See also Figure 3 As shown, Figure 3 : is a flow chart of a control method of an aerosol generating device provided in an embodiment of the present invention. The control method of an aerosol generating device is applied to the above-mentioned aerosol generating device, and comprises the following steps:

[0032] Step S10, the controller outputs a switch control signal to the switch unit according to a preset initial switch control signal to control the on and off of the switch unit;

[0033] Step S20: The filter unit outputs a DC voltage of a required waveform to the atomizer core according to the on / off state of the switch unit.

[0034] Among them, the control method of the aerosol generating device outputs a switch control signal to the switch unit according to a preset initial switch control signal through a controller to control the on and off of the switch unit; the filter unit outputs a DC voltage of the required waveform to the atomization core according to the on and off of the switch unit, thereby avoiding the problem of the atomization core being stuck or the aerosol generating device producing odor due to excessive instantaneous power when the output voltage waveform is a rectangular wave.

[0035] Combination Figure 4 Specifically, before step S10, the step further includes:

[0036] Step S101: The controller determines whether a suction action occurs according to the airflow information obtained by detection, and if so, executes step S10. By detecting the airflow information to determine whether a suction action occurs or not, the atomization operation start control can be performed, which can improve safety.

[0037] Preferably, before step S10, the step further includes:

[0038] The controller presets a signal parameter corresponding to the initial switch control signal according to the input setting. The signal parameter corresponding to the preset initial switch control signal may be a pulse width or a pulse frequency.

[0039] Specifically, after step S20, the method further includes:

[0040] Step S30: When the controller determines that the DC voltage output by the filter unit does not meet the required voltage, the switch control signal is adjusted according to the required voltage and output to the switch unit to control the on and off of the switch unit. The current output voltage output by the filter unit is detected in real time and fed back to the controller, so that the controller adjusts the switch control signal according to the required voltage and outputs it to the switch unit, so as to adjust the output of the switch unit by adjusting the switch control signal, and then adjust the output of the filter unit, so that the voltage output by the filter unit can be adjusted to the required voltage, with high accuracy and improved safety.

[0041] Preferably, after step S20, the method further includes:

[0042] The controller calculates the required voltage based on the resistance of the heating wire of the atomizer core and the required power, and adjusts the switch control signal according to the required voltage. By detecting the resistance of the heating wire of the atomizer core and the required power, the required voltage is calculated, and the switch control signal is adjusted according to the required voltage, so that the atomizer core can output constant power.

[0043] In summary, the aerosol generating device of the present invention is provided with an atomization control circuit including a controller, a switch unit and a filter unit electrically connected to the atomization core, and the filter unit is connected to the atomization core, so that the controller outputs a corresponding switch control signal to control the on and off of the switch unit, thereby controlling the filter unit to output a DC voltage signal of the required waveform, thereby avoiding the problem of the atomization core being stuck or the aerosol generating device producing odor due to excessive instantaneous power when the output voltage waveform is a rectangular wave, which is conducive to the mass production of the aerosol generating device, and can improve the user experience, with a simple circuit structure and low production cost. The control method of the aerosol generating device of the present invention also has the above functions.

[0044] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. An aerosol generating device, characterized in that: It includes an atomization control circuit and an atomization core, wherein the atomization control circuit is electrically connected to the atomization core, and the atomization control circuit includes a controller, a switch unit and a filter unit. The controller is connected to the filter unit through the switch unit and is used to output a switch control signal to control the on and off of the switch unit so as to control the filter unit to output a DC voltage of a required waveform, and the filter unit is electrically connected to the atomization core.

2. The aerosol generating device according to claim 1, characterized in that: The switch control signal is a pulse width modulation signal or a pulse frequency modulation signal to control the on-time and off-time of the switch unit.

3. The aerosol generating device according to claim 1, characterized in that: The aerosol generating device also includes a power supply device for providing power. The power supply device is connected to the atomization core through the atomization control circuit. The power supply device is connected to the controller and the switch unit. The switch unit includes a switch tube. The controller is connected to the control end of the switch tube, one end of the switch tube is connected to the power supply device, and the other end of the switch tube is connected to the filter unit.

4. The aerosol generating device according to claim 3, characterized in that: The filtering unit includes a filtering capacitor, the power supply device is a battery, the battery, the switching tube and the filtering capacitor are connected in series to form a loop, the positive electrode of the battery is connected to one end of the switching tube, the other end of the switching tube is connected to the first end of the filtering capacitor, and the second end of the filtering capacitor is connected to the ground and the negative electrode of the battery.

5. The aerosol generating device according to claim 1, characterized in that: The atomization control circuit also includes a feedback unit, which is connected to the filter unit and the controller respectively, and is used to obtain the current output voltage output by the filter unit and feed it back to the controller, so that the controller adjusts the switch control signal according to the required voltage.

6. The aerosol generating device according to claim 5, characterized in that: The feedback unit is connected to the heating wire of the atomizer core, and is used to measure the resistance of the heating wire of the atomizer core and feed it back to the controller, so that the controller calculates the required voltage according to the required output power combined with the resistance of the heating wire and adjusts the switch control signal according to the required voltage.

7. The aerosol generating device according to claim 1, characterized in that: The atomization control circuit further includes a suction detection unit, which is connected to the controller and is used to detect airflow information and transmit it to the controller to determine whether a suction action occurs.

8. A method for controlling an aerosol generating device, characterized in that: Applied to the aerosol generating device according to any one of claims 1 to 7, the control method of the aerosol generating device comprises the following steps: The controller outputs a switch control signal to the switch unit according to a preset initial switch control signal to control the on and off of the switch unit; The filter unit outputs a DC voltage of a required waveform to the atomizer core according to the on-off of the switch unit.

9. The control method of the aerosol generating device according to claim 8, characterized in that: After the step of the filter unit outputting a DC voltage of a required waveform to the atomizer core according to the on-off of the switch unit, the method further includes: When the controller determines that the DC voltage output by the filter unit does not meet the required voltage, the controller adjusts the switch control signal according to the required voltage and outputs the signal to the switch unit to control the on and off of the switch unit.

10. The control method of the aerosol generating device according to claim 8, characterized in that: After the step of the filter unit outputting a DC voltage of a required waveform to the atomizer core according to the on-off of the switch unit, the method further includes: The controller calculates the required voltage according to the resistance of the heating wire of the atomizer core obtained by detection and the required power, and adjusts the switch control signal according to the required voltage.

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