Control circuit, and aerosol generating device and control method therefor

Abstract

The present application discloses a control circuit, and an aerosol generating device and a control method therefor. The control circuit comprises: a power circuit; a controller comprising a plurality of output ports for outputting enable signals; a switching circuit having a plurality of different switching states and being configured to send a corresponding output signal to the controller on the basis of a switching state; two or more switch circuits, each switch circuit being electrically connected between the power circuit and a corresponding heating element, and each switch circuit being connected to the corresponding output port to receive an enable signal; and a trigger circuit configured to send a trigger signal to the controller in response to a trigger action. The controller is configured to selectively activate one or more output ports on the basis of the output signal, and output an enable signal to the corresponding switch circuit via the activated output port on the basis of the trigger signal, so as to control the switch circuit to be turned on or off. Therefore, embodiments of the present application can increase the control modes for heating elements.

Description

Control circuit, aerosol generating device and its control method

[0001]

[0002] Cross-reference of related applications

[0003] This application claims priority to Chinese Patent Application No. 202411527773.5, filed on October 30, 2024, entitled "Control Circuit, Aerosol Generating Device and Control Method Thereof", the entire contents of which are incorporated herein by reference.

[0004] Technical Field

[0005] This application relates to the field of electronic atomization technology, and in particular to a control circuit, an aerosol generating device, and a control method thereof. Background Technology

[0006] The aerosol generating device includes a liquid reservoir. An inhalable aerosol is generated by heating an aerosol forming matrix within the liquid reservoir. The aerosol forming matrix can be a liquid matrix, such as glycerol, propylene glycol, nicotine salts, or other functional ingredients.

[0007] In one prior art example, the aerosol generating device includes a battery cell, two or more liquid storage chambers for storing different matrix components, and a heating element disposed in each liquid storage chamber. Single-shot control of the two or more liquid storage chambers for storing different matrix components is achieved by selecting the current circuit between the battery cell and the heating element in each liquid storage chamber. However, the above method only allows for single-shot control and lacks a multi-shot control method. Therefore, it cannot achieve mixing of different matrix components in two or more liquid storage chambers, reducing the flavor function of the aerosol generating device and lowering the user experience. Summary of the Invention

[0008] This application aims to provide a control circuit, an aerosol generating device, and a control method thereof, which can control only one heating element to start working or control at least two heating elements to start working simultaneously, thereby increasing the control methods for more than two heating elements, thereby increasing the flavor function of the aerosol generating device and improving the user experience.

[0009] In a first aspect, embodiments of this application provide a control circuit for an aerosol generating device, the aerosol generating device including two or more heating elements, and the control circuit including:

[0010] The power supply circuit is used to provide power to the heating element.

[0011] The controller is electrically connected to the power supply circuit and the heating element, and includes multiple output ports for outputting enable signals.

[0012] The switching circuit is electrically connected between the power supply circuit and the controller. The switching circuit has multiple different switching states and is configured to send corresponding output signals to the controller according to the switching state.

[0013] Two or more switching circuits, each of which is electrically connected between the power supply circuit and the corresponding heating element, and the switching circuit is connected to the corresponding output port to receive the enable signal;

[0014] The trigger circuit is electrically connected to the power supply circuit and the controller respectively. The trigger circuit is configured to send a trigger signal to the controller in response to a triggering action.

[0015] The controller is configured to selectively activate one or more output ports based on the output signal, and is configured to output an enable signal to the corresponding switching circuit through the activated output port based on the trigger signal, thereby controlling its conduction or shutdown.

[0016] In some embodiments, the output signal includes an output voltage, and the controller is further configured to select and activate one or more output ports based on the magnitude of the output voltage.

[0017] In some embodiments, the output voltage includes at least a first output voltage and a second output voltage, and the controller is further configured to activate only one of the output ports when the first output voltage is received, thereby enabling the corresponding heating element to start working; and to activate at least two output ports when the second output voltage is received, thereby enabling the corresponding at least two heating elements to start working simultaneously.

[0018] In some embodiments, the switching circuit includes:

[0019] Turn the toggle switch to connect it electrically to the controller;

[0020] A voltage divider circuit is electrically connected between the power supply circuit and the ground terminal, and is also electrically connected to the toggle switch. The voltage divider circuit has an output node corresponding to the switching state, and is configured to send the output voltage of the corresponding output node to the controller according to the switching state of the toggle switch.

[0021] In some embodiments, the output signal includes a switch signal, which includes at least a first switch signal and a second switch signal. The controller is further configured to activate only one of the output ports when the first switch signal is received, thereby enabling the corresponding heating element to start working; and to activate at least two output ports when the second switch signal is received, thereby enabling the corresponding at least two heating elements to start working simultaneously.

[0022] In some embodiments, the switching circuit includes a pull-up resistor and a DIP switch, wherein the number of DIP switch buttons is the same as the number of heating elements.

[0023] One end of each DIP switch is electrically connected to the power supply circuit and the controller via a corresponding pull-up resistor, and the other end of each DIP switch is grounded. The DIP switches are configured to output a switch signal to the controller according to the switch state combination of their DIP switches, wherein each switch state combination corresponds to the switching state of a switching circuit.

[0024] In some embodiments, the toggle switch includes:

[0025] Common contact, the common contact is electrically connected to the controller;

[0026] The number of active contacts is at least one more than the number of heating elements, and each active contact is electrically connected to the corresponding output node.

[0027] In some embodiments, the aerosol generating device includes two heating elements, the toggle switch includes a common contact, a first active contact, a second active contact and a third active contact, the voltage divider circuit includes a first resistor and a second resistor connected in series, and the voltage divider circuit has a first output node, a second output node and a third output node corresponding to the switching state of the toggle switch.

[0028] The first output node is located between the power supply circuit and the first resistor and is electrically connected to the first active contact; the second output node is located between the first resistor and the second resistor and is electrically connected to the second active contact; and the third output node is located between the second resistor and the ground terminal and is electrically connected to the third active contact.

[0029] In some embodiments, the aerosol generating device includes three heating elements, and the switching circuit includes a first pull-up resistor, a second pull-up resistor, a third pull-up resistor, and a DIP switch, wherein the DIP switch includes a first DIP button, a second DIP button, and a third DIP button.

[0030] The first DIP switch has one end electrically connected to the power supply circuit via a first pull-up resistor, the second DIP switch has one end electrically connected to the power supply circuit via a second pull-up resistor, and the third DIP switch has one end electrically connected to the power supply circuit via a third pull-up resistor. One end of each of the three DIP switches is electrically connected to the controller. The other ends of each of the three DIP switches are grounded.

[0031] In some embodiments, the switching circuit includes a third resistor, a fourth resistor, and an NMOS transistor; the third resistor is electrically connected between the controller and the gate of the NMOS transistor, the fourth resistor is electrically connected between the gate of the NMOS transistor and the ground terminal, the source of the NMOS transistor is grounded, and the drain of the NMOS transistor is electrically connected to a corresponding heating element.

[0032] In some embodiments, the trigger circuit includes an airflow sensor and / or a tactile switch.

[0033] In some embodiments, a display circuit is also included, electrically connected between the power supply circuit and the controller, the display circuit being used to indicate the operating status of the aerosol generating device.

[0034] In some embodiments, a charging circuit is also included, electrically connected to the controller, the charging circuit being used to provide a charging voltage to the power supply circuit via an external power source.

[0035] Secondly, embodiments of this application provide an aerosol generating apparatus, including the control circuit of any of the above embodiments.

[0036] Thirdly, embodiments of this application provide a control method for an aerosol generating device, the aerosol generating device including two or more heating elements and a power supply circuit for providing power to the heating elements, the control method including:

[0037] Receives the output signal of the switching circuit, which has multiple different switching states;

[0038] Based on the output signal corresponding to each of the different switching states, one or more output ports used to output enable signals are selectively activated.

[0039] The receiving trigger circuit receives the trigger signal generated in response to the trigger action, and outputs an enable signal to the corresponding switching circuit through the activated output port based on the trigger signal, thereby enabling the switching circuit to turn on or off the current path between the heating element and the power supply circuit.

[0040] The embodiments of this application have at least the following beneficial effects: By setting the aerosol generating device to include two or more heating elements, a power supply circuit, a switching circuit, a switch circuit, a trigger circuit, and a controller, the controller includes multiple output ports for outputting enable signals. Each switch circuit is electrically connected between the power supply circuit and the corresponding heating element, and is also electrically connected to the corresponding output port. The switching circuit is configured to send a corresponding output signal to the controller according to its different switching states. The trigger circuit is configured to send a trigger signal to the controller in response to a triggering action. The controller is configured to selectively activate one or more output ports based on the output signals, and output an enable signal to the corresponding switch circuit through the activated output port based on the trigger signal, thereby controlling its conduction or deactivation. Therefore, the embodiments of this application can control only one heating element to start working, or control at least two heating elements to start working simultaneously, thereby increasing the control methods for two or more heating elements, thus increasing the flavor function of the aerosol generating device and improving the user experience. Attached Figure Description

[0041] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0042] Figure 1 is a schematic diagram of the control circuit of an aerosol generating device provided in an embodiment of this application;

[0043] Figure 2 is a schematic diagram of a switching circuit provided in an embodiment of this application;

[0044] Figure 3 is a schematic diagram of another switching circuit provided in an embodiment of this application;

[0045] Figure 4 is a schematic diagram of an aerosol generating device provided in an embodiment of this application, including two heating elements and a controller.

[0046] Figure 5 is a schematic diagram of the circuit connection of the switching circuit in Figure 2, which includes two heating elements and an aerosol generating device provided in an embodiment of this application.

[0047] Figure 6 is a schematic diagram of the circuit connection of an aerosol generating device provided in an embodiment of this application, including two heating elements and two switching circuits;

[0048] Figure 7 is a schematic diagram of an aerosol generating device including three heating elements and a controller provided in an embodiment of this application;

[0049] Figure 8 is a schematic diagram of the switching circuit in Figure 3, which includes three heating elements, according to an embodiment of this application.

[0050] Figure 9 is a schematic diagram of the circuit connection of an aerosol generating device provided in an embodiment of this application, including three heating elements and three switching circuits;

[0051] Figure 10 is a schematic diagram of the control circuit of another aerosol generating device provided in an embodiment of this application;

[0052] Figure 11 is a circuit connection diagram of the display circuit of Figure 10 provided in an embodiment of this application;

[0053] Figure 12 is a schematic diagram of an aerosol generating device provided in an embodiment of this application;

[0054] Figure 13 is a schematic flowchart of a control method for an aerosol generating device provided in an embodiment of this application. Embodiments of the present invention

[0055] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0056] It should be noted that this application applies to aerosol generating devices that include two or more heating elements. The control circuit provided in the embodiments of this application is used to switch and control the two or more heating elements in the aerosol generating device. Specifically, it includes controlling only one heating element to start working and controlling at least two heating elements to start working simultaneously, thereby meeting the user's demand for multiple or mixed flavors in the aerosol generating device.

[0057] As one example, the aerosol generating device is a dual-chamber or multi-chamber electronic cigarette. Each atomizing chamber includes a liquid reservoir and a heating element. The liquid reservoir stores an aerosol-forming matrix. The heating element located within the atomizing chamber heats the aerosol-forming matrix in the liquid reservoir using any existing heating method to generate an inhalable aerosol. The control circuit provided in this application provides switching control of the heating elements in different atomizing chambers, thereby selecting the heating circuit of one or more atomizing chambers and achieving atomizing chamber switching. If the heating circuit of one atomizing chamber is selected, and at least two atomizing chambers of the electronic cigarette store aerosol-forming matrices with different matrix compositions, then different flavors can be switched by switching atomizing chambers. If the heating circuits of at least two atomizing chambers are selected, and at least two atomizing chambers of the electronic cigarette store aerosol-forming matrices with different matrix compositions, then different flavors can be mixed by switching atomizing chambers.

[0058] Please refer to Figure 1, which is a schematic diagram of the control circuit of an aerosol generating device provided in an embodiment of this application. As shown in Figure 1, the aerosol generating device includes two or more heating elements 11, and the control circuit 100 includes a power supply circuit 12, a controller 13, a switching circuit 14, two or more switching circuits 15, and a trigger circuit 16.

[0059] The power supply circuit 12 is used to provide power to the heating element 11.

[0060] The power supply circuit 12 includes a battery cell, which, in addition to providing power to the heating element 11, also serves as the power supply for the control circuit 100. As shown in Figures 4, 5, 7, 8, and 11, the battery cell is configured to output the power supply voltage B+.

[0061] The battery cell is a rechargeable cell, capable of replenishing its power when it is low or depleted. It is understood that disposable cells can also be used. The cell can be any suitable power source, such as a DC power source, or a battery. In one example, the battery is a lithium-ion battery. Alternatively, the battery can be a nickel-metal hydride battery, a nickel-cadmium battery, or a lithium-based battery, such as a lithium cobalt, lithium iron phosphate, lithium titanate, or lithium polymer battery.

[0062] Optionally, the power supply circuit 12 also includes a protection circuit, which is electrically connected to the battery cell to protect it. For example, the protection circuit is electrically connected between the positive and negative terminals of the battery cell, and includes a lithium-ion battery protection chip and its peripheral circuitry.

[0063] The controller 13 is electrically connected to the power supply circuit 12 and the heating element 11 respectively. The controller 13 includes multiple output ports 131 for outputting enable signals.

[0064] As shown in Figure 4, the controller 13 includes a control chip U1 and its peripheral circuitry. The control chip U1 includes two output ports 131 for outputting enable signals. The control chip U1 includes pins VDD, KEY, MIC, SS1, OUT+, O1, and O2. Pins O1 and O2 are the two output ports 131 used by the control chip U1 to output enable signals. Its peripheral circuitry includes a resistor R1 and a capacitor C1. Resistor R1 is electrically connected between the VDD pin and the power supply circuit 12, and capacitor C1 is electrically connected between the VDD pin and the ground terminal.

[0065] As shown in Figure 7, the controller 13 includes a control chip U2 and its peripheral circuitry. The control chip U2 includes three output ports 131 for outputting enable signals. The control chip U2 includes the following pins: MOTOR, VDD, KEY, MIC, SS1, SS2, SS3, OUT+, O1, O2, and O3. Pins O1, O2, and O3 are the three output ports 131 used by the control chip U1 to output enable signals. Compared to the peripheral circuitry in Figure 4, its peripheral circuitry also includes a resistor R2, which is electrically connected between the MOTOR pin and the power supply circuit 12.

[0066] In some embodiments, controller 13 may be a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), microcontroller, ARM (AcornRISC Cachine) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination of these components. Additionally, controller 13 may also be any conventional processor, controller, microcontroller, or state machine. Control unit 11 may also be implemented as a combination of computing devices, such as a combination of DSP and microprocessor, multiple microprocessors, one or more microprocessors combined with DSP and / or any other such configuration.

[0067] The switching circuit 14 is electrically connected between the power supply circuit 12 and the controller 13. The switching circuit 14 has multiple different switching states and is configured to send a corresponding output signal to the controller 13 according to the switching state.

[0068] In some embodiments, the output signal includes an output voltage, and the controller 13 is further configured to select and activate one or more output ports 131 based on the magnitude of the output voltage.

[0069] Specifically, the output voltage includes at least a first output voltage and a second output voltage. The controller 13 is also configured to activate only one of the output ports 131 when the first output voltage is received, thereby enabling the corresponding heating element 11 to start working; and to activate at least two output ports 131 when the second output voltage is received, thereby enabling the corresponding at least two heating elements 11 to start working simultaneously.

[0070] As shown in Figure 2, the switching circuit 14 includes a toggle switch 141 and a voltage divider circuit 142.

[0071] The toggle switch 141 is electrically connected to the controller 13.

[0072] The toggle switch 141 includes a common contact and a moving contact. The common contact is electrically connected to the controller 13. The number of moving contacts is at least one more than the number of heating elements 11, and the moving contacts are electrically connected to corresponding output nodes (not shown in Figure 2).

[0073] Voltage divider circuit 142 is electrically connected between power supply circuit 12 and ground terminal, and is also electrically connected to toggle switch 141. Voltage divider circuit 142 has output nodes corresponding to switching states. Voltage divider circuit 142 is configured to send the output voltage of the corresponding output node to controller 13 according to the switching state of toggle switch 141.

[0074] As can be seen, the number of output voltages is equal to the switching state of the toggle switch 141. As shown in Figure 5, the toggle switch 141 includes a common contact S1a, a first active contact S1b, a second active contact S1c, and a third active contact S1d. The active contacts correspond to the switching states of the toggle switch 141. At this time, the toggle switch 141 has three switching states. The voltage divider circuit 142 includes a first resistor R3 and a second resistor R4 connected in series. The voltage divider circuit 142 has a first output node 142a, a second output node 142b, and a third output node 142c corresponding to the switching states of the toggle switch S1. Among them, the first output node 142a is located between the power supply circuit 12 and the first resistor R3 and is electrically connected to the first active contact S1b; the second output node 142b is located between the first resistor R3 and the second resistor R4 and is electrically connected to the second active contact S1c; and the third output node 142c is located between the second resistor R4 and the ground terminal and is electrically connected to the third active contact S1d.

[0075] In some embodiments, the output signal includes a switch signal, which includes at least a first switch signal and a second switch signal. The controller 13 is also configured to activate only one of the output ports 131 when the first switch signal is received, thereby enabling the corresponding heating element 11 to start working; and to activate at least two output ports 131 when the second switch signal is received, thereby enabling the corresponding at least two heating elements 11 to start working simultaneously.

[0076] As shown in Figure 3, the switching circuit 14 includes a pull-up resistor 143 and a DIP switch 144. The number of DIP switches 1441 set by the DIP switch 144 is the same as the number of heating elements 11.

[0077] One end of each DIP switch 1441 is electrically connected to the power supply circuit 12 through a corresponding pull-up resistor 143 and is also electrically connected to the controller 13. The other end of each DIP switch 1441 is grounded. The DIP switch 14 is configured to output a switch signal to the controller 13 according to the switch state combination of its DIP switch 1441. Each switch state combination corresponds to the switching state of a switching circuit 14.

[0078] As shown in Figure 8, the switching circuit 14 includes a first pull-up resistor R5, a second pull-up resistor R6, a third pull-up resistor R7, and a DIP switch S2. The DIP switch S2 includes a first DIP button 1441a, a second DIP button 1441b, and a third DIP button 1441c. One end of the first DIP button 1441a is electrically connected to the power supply circuit 12 via the first pull-up resistor R5 and is also electrically connected to pin SS1 of the control chip U2. The other end of the first DIP button 1441a is grounded. One end of the second DIP button 1441b is electrically connected to the power supply circuit 12 via the second pull-up resistor R6 and is also electrically connected to pin SS2 of the control chip U2. The other end of the second DIP button 1441b is grounded. One end of the third DIP button 1441c is electrically connected to the power supply circuit 12 via the third pull-up resistor R7 and is also electrically connected to pin SS3 of the control chip U2. The other end of the third DIP button 1441c is grounded. Each switching circuit 15 is electrically connected between the power supply circuit 12 and the corresponding heating element 11, and the switching circuit 15 is connected to the corresponding output port 131 to receive the enable signal.

[0079] In the embodiments of this application, each switch circuit 15 adopts the same circuit structure. For example, switch circuits 15a and 15b shown in FIG. 6 adopt the same circuit structure, and switch circuits 15a, 15b and 15c shown in FIG. 9 adopt the same circuit structure. In some other embodiments, the circuit structures between at least two switch circuits 15 may be configured differently.

[0080] Taking the switching circuit 15a shown in Figure 6 as an example, the switching circuit 15a includes a third resistor R8, a fourth resistor R9, and an NMOS transistor Q1. The third resistor R8 is electrically connected between the controller 13 (pin O1 of the control chip U1) and the gate of the NMOS transistor Q1. The fourth resistor R9 is electrically connected between the gate of the NMOS transistor Q1 and the ground terminal. The source of the NMOS transistor Q1 is grounded, and the drain of the NMOS transistor Q1 is electrically connected to the corresponding heating element 11a.

[0081] Taking the switching circuit 15a as an example, the switching circuit 15a can also use switching transistors such as PMOS transistors, transistors, IGBT transistors, and power MOSFETs. When the switching circuit 15a uses a PMOS transistor, the heating element 11a is connected in series between the source and ground of the PMOS transistor. The drain of the PMOS transistor is electrically connected to the power supply circuit 12 to receive the power supply voltage B+ provided by the power supply circuit 12, or electrically connected to the controller 13 to receive the power drive signal output by the controller 13.

[0082] It is understood that the switching circuit 15 may also include switches such as NMOS transistors, PMOS transistors, transistors, IGBT transistors, and power MOSFETs integrated inside the control chip U1 or control chip U2, which are configured to generate power drive signals and output from the OUT+ pin of the control chip U1 or control chip U2.

[0083] The trigger circuit 16 is electrically connected to the power supply circuit 12 and the controller 13 respectively, and the trigger circuit 16 is configured to send a trigger signal to the controller 13 in response to a triggering action.

[0084] The trigger circuit 16 includes an airflow sensor and / or a tactile switch.

[0085] The first terminal of the airflow sensor is electrically connected to the VDD pin of control chip U1 or control chip U2, the second terminal of the airflow sensor is grounded, and the third terminal of the airflow sensor is electrically connected to the MIC pin of control chip U1 or control chip U2. In some embodiments, a filter capacitor may be provided between the first and second terminals of the airflow sensor. The airflow sensor is configured to send a trigger signal to the MIC pin of control chip U1 or control chip U2 in response to a suction action.

[0086] The tactile switch is electrically connected between the power supply circuit 12 and the ground terminal. The end of the tactile switch connected to the power supply circuit 12 is also electrically connected to the KEY pin of control chip U1 or control chip U2. In some embodiments, a current-limiting resistor may be provided between the power supply circuit 12 and the tactile switch. The tactile switch is configured to send a trigger signal to the KEY pin of control chip U1 or control chip U2 in response to a button press.

[0087] The controller 13 is configured to selectively activate one or more output ports 131 based on the output signal, and is configured to output an enable signal to the corresponding switching circuit 15 through the activated output port 131 based on the trigger signal, thereby controlling its conduction or shutdown.

[0088] It should be noted that the order in which the controller 13 receives the trigger signal, outputs the signal, and controls the switching circuit 15 to turn on or off can be interchanged, including at least the following situations:

[0089] The controller 13 receives an output signal, selectively activates one or more output ports 131 based on the output signal, and then receives a trigger signal. Based on the trigger signal, it outputs an enable signal to the corresponding switching circuit 15 through the activated output port 131, thereby controlling its conduction or deactivation.

[0090] The controller 13 receives the output signal, selectively activates one or more output ports 131 based on the output signal, outputs an enable signal to the corresponding switching circuit 15 through the activated output port 131, thereby controlling its conduction or deactivation, and then receives the trigger signal.

[0091] The controller 13 receives a trigger signal and then receives an output signal. Based on the output signal, it selectively activates one or more output ports 131 and outputs an enable signal to the corresponding switching circuit 15 through the activated output port 131, thereby controlling its conduction or shutdown.

[0092] In one embodiment, the output port 131 is in a sleep state, and the controller 13 is configured to selectively activate one or more output ports 131 based on the output signal. Once the output port 131 is activated, it can output an enable signal.

[0093] In one embodiment, output port 131 is configured with an initial level, and controller 13 is configured to selectively activate one or more output ports 131 based on an output signal, wherein the initial level of output port 131 is changed after activation. For example, the initial level of output port 131 is low, and output port 131 changes from low to high after activation; or the initial level of output port 131 is high, and output port 131 changes from high to low after activation.

[0094] In one embodiment, the heating element 11 is connected in series in the current loop of the controller 13 and the switching circuit 15. By turning the switching circuit 15 on or off, a current path between one heating element 11 and the controller 13 can be selected to enable only one heating element to start working. Alternatively, a current path between at least two heating elements 11 and the controller 13 can be selected to enable at least two heating elements to start working simultaneously.

[0095] In one embodiment, the heating element 11 is connected in series in the current loop of the power supply circuit 12 and the switching circuit 15. By turning the switching circuit 15 on or off, the current path between one heating element 11 and the power supply circuit 12 can be selected to enable only one heating element to start working. Alternatively, the current path between at least two heating elements 11 and the power supply circuit 12 can be selected to enable at least two heating elements to start working simultaneously.

[0096] Please refer to Figures 4 to 6. Taking an aerosol generating device that includes two heating elements 11 (heating element 11a and heating element 11b) as an example, the controller 13 includes a control chip U1. The pin SS1 of the control chip U1 is electrically connected to the port SS1 of the switching circuit 14 shown in Figure 5. The pin O1 of the control chip U1 is electrically connected to the port O1 of the switching circuit 15a shown in Figure 6. The pin O2 of the control chip U1 is electrically connected to the port O2 of the switching circuit 15b shown in Figure 6.

[0097] In one embodiment, the resistance values ​​of the first resistor R3 and the second resistor R4 are equal. The working principle of Figure 4-6 is as follows:

[0098] When the toggle switch 141 toggles the connection between the common contact S1a and the first active contact S1b, a circuit is formed between the first output node 142a, the first active contact S1b, and the common contact S1a. At this time, the first output node 142a outputs the power supply voltage B+ and sends it to pin SS1 of the control chip U1. Furthermore, when the control chip U1 receives a trigger signal at pin KEY or pin MIC, in one example, pin KEY of the control chip U1 detects a low-level signal, activates pin O1 of the control chip U1, and outputs a high-level signal from pin O1 of the control chip U1 to the switching circuit 15a, satisfying the conduction condition of NMOS transistor Q1, and NMOS transistor Q1 conducts. Pin O2 of the control chip U1 outputs a low-level signal to the switching circuit 15b, which does not satisfy the conduction condition of NMOS transistor Q2, and NMOS transistor Q2 remains off. The power MOS integrated inside the control chip U1 turns on, and pin OUT+ of the control chip U1 outputs a power drive signal. The power drive signal is sent to the positive terminal 11a+ of the heating element 11a and the positive terminal 11b+ of the heating element 11b. At this time, the power drive signal passes through the positive terminal 11a+ of the heating element 11a, the negative terminal 11a- of the heating element 11a, and the NMOS transistor Q1 to the ground terminal, causing the heating element 11a to start working.

[0099] When toggle switch 141 moves the connection between the common contact S1a and the second active contact S1c, a loop is formed between the second output node 142b, the second active contact S1c, and the common contact S1a. At this time, the second output node 142b outputs half the power supply voltage B+ and sends it to pin SS1 of the control chip U1. Further, when pin KEY or pin MIC of the control chip U1 receives a trigger signal, in one example, pin KEY of the control chip U1 detects a low-level signal, activating pins O1 and O2 of the control chip U1, and outputting a high-level signal from pin O1 to the switching circuit 15a, satisfying the conduction condition of NMOS transistor Q1, which then conducts. Similarly, pin O2 of the control chip U1 outputs a high-level signal to the switching circuit 15b, satisfying the conduction condition of NMOS transistor Q2, which then conducts. The power MOS integrated inside the control chip U1 turns on, and the control chip... The OUT+ pin of U1 outputs a power drive signal. The power drive signal is sent to the positive terminal 11a+ of heating element 11a and the positive terminal 11b+ of heating element 11b. At this time, the power drive signal passes through the positive terminal 11a+ of heating element 11a, the negative terminal 11a- of heating element 11a, and the NMOS transistor Q1 to the ground terminal, causing heating element 11a to start working. At the same time, it passes through the positive terminal 11b+ of heating element 11b, the negative terminal 11b- of heating element 11b, and the NMOS transistor Q2 to the ground terminal, causing heating element 11b to start working. Therefore, heating elements 11a and 11b start working at the same time.

[0100] When the toggle switch 141 toggles the connection between the common contact S1a and the third active contact S1d, a circuit is formed between the third output node 142c, the third active contact S1d, and the common contact S1a. At this time, the third output node 142c outputs a 0V voltage and sends it to pin SS1 of the control chip U1. Furthermore, when the control chip U1 receives a trigger signal at pin KEY or pin MIC, in one example, pin KEY of the control chip U1 detects a low-level signal, activates pin O2 of the control chip U1, and outputs a high-level signal from pin O2 of the control chip U1 to the switching circuit 15b, satisfying the conduction condition of NMOS transistor Q2, and NMOS transistor Q2 conducts. Pin O1 of the control chip U1 outputs a low-level signal to the switching circuit 15a, which does not satisfy the conduction condition of NMOS transistor Q1, and NMOS transistor Q1 remains off. The power MOS integrated inside the control chip U1 turns on, and pin OUT+ of the control chip U1 outputs a power drive signal. The power drive signal is sent to the positive terminal 11a+ of the heating element 11a and the positive terminal 11b+ of the heating element 11b. At this time, the power drive signal passes through the positive terminal 11b+ of the heating element 11b, the negative terminal 11b- of the heating element 11b, and the NMOS transistor Q2 to the ground terminal, causing the heating element 11b to start working.

[0101] Please refer to Figures 7 to 9. Taking an aerosol generating device comprising three heating elements 11 (heating element 11a, heating element 11b, and heating element 11c) as an example, based on the above embodiment, heating element 11c and a corresponding switching circuit 15c are added. The controller 13 includes a control chip U2. Pin SS1 of the control chip U2 is electrically connected to port SS1 of the switching circuit 14 shown in Figure 8. Pin SS2 of the control chip U2 is electrically connected to port SS2 of the switching circuit 14 shown in Figure 8. Pin SS3 of the control chip U2 is electrically connected to port SS3 of the switching circuit 14 shown in Figure 8. Pin O1 of the control chip U2 is electrically connected to port O1 of the switching circuit 15a shown in Figure 9. Pin O2 of the control chip U2 is electrically connected to port O2 of the switching circuit 15a shown in Figure 9. Pin O3 of the control chip U2 is electrically connected to port O3 of the switching circuit 15a shown in Figure 9.

[0102] The first DIP switch 1441a, the second DIP switch 1441b, and the third DIP switch 1441c have seven outputs, meaning they have seven different switching states. The working principle shown in Figure 7-9 is as follows:

[0103] When the first DIP switch 1441a is switched to OFF, the second DIP switch 1441b is switched to ON, and the third DIP switch 1441c is switched to ON, ports SS1-SS3 of the DIP switch S2 output 100 and send it to pins SS1-SS3 of the control chip U2. Further, when pin KEY or pin MIC of the control chip U2 receives a trigger signal, in one example, pin KEY of the control chip U2 detects a low-level signal, activating pin O1 of the control chip U2. A high-level signal is then output from pin O1 of the control chip U2 to the switching circuit 15a, satisfying the conduction condition of NMOS transistor Q1, which turns on. Pin O2 of the control chip U2 outputs a low-level signal to the switching circuit 15b, which does not satisfy the conduction condition of NMOS transistor Q2, which remains off. Pin O3 of the control chip U2 outputs a low-level signal. The signal to the switching circuit 15c does not meet the conduction condition of NMOS transistor Q3, so NMOS transistor Q3 remains off. The power MOS integrated inside the control chip U2 turns on, and the OUT+ pin of the control chip U2 outputs a power drive signal. The power drive signal is sent to the positive terminal 11a+ of the heating element 11a, the positive terminal 11b+ of the heating element 11b, and the positive terminal 11c+ of the heating element 11c. At this time, the power drive signal passes through the positive terminal 11a+ of the heating element 11a, the negative terminal 11a- of the heating element 11a, and the NMOS transistor Q1 to the ground terminal, causing the heating element 11a to start working.

[0104] When the first DIP switch 1441a is turned ON, the second DIP switch 1441b is turned OFF, and the third DIP switch 1441c is turned ON, ports SS1-SS3 of the DIP switch S2 output 010 and send it to pins SS1-SS3 of the control chip U2. Further, when pin KEY or pin MIC of the control chip U2 receives a trigger signal, in one example, pin KEY of the control chip U2 detects a low-level signal, activating pin O2 of the control chip U2. Pin O1 of the control chip U2 outputs a low-level signal to the switching circuit 15a, which does not meet the conduction condition of NMOS transistor Q1, so NMOS transistor Q1 remains off. Pin O2 of the control chip U2 outputs a high-level signal to the switching circuit 15b, which meets the conduction condition of NMOS transistor Q2, turning it on. Pin O3 of the control chip U2 then outputs a low-level signal. The signal is sent to the switching circuit 15c, which satisfies the conduction condition of NMOS transistor Q3, and NMOS transistor Q3 remains in the off state. The power MOS integrated inside the control chip U2 turns on, and the OUT+ pin of the control chip U2 outputs the power drive signal. The power drive signal is sent to the positive terminal 11a+ of the heating element 11a, the positive terminal 11b+ of the heating element 11b, and the positive terminal 11c+ of the heating element 11c. At this time, the power drive signal passes through the positive terminal 11b+ of the heating element 11b, the negative terminal 11b- of the heating element 11b, and the NMOS transistor Q2 to the ground terminal, causing the heating element 11b to start working.

[0105] When the first DIP switch 1441a is turned ON, the second DIP switch 1441b is turned ON, and the third DIP switch 1441c is turned OFF, ports SS1-SS3 of the DIP switch S2 output 001 and send it to pins SS1-SS3 of the control chip U2. Further, when pin KEY or pin MIC of the control chip U2 receives a trigger signal, in one example, pin KEY of the control chip U2 detects a low-level signal, activating pin O3 of the control chip U2. Pin O1 of the control chip U2 outputs a low-level signal to the switching circuit 15a, which does not meet the turn-on condition of NMOS transistor Q1, so NMOS transistor Q1 remains off. Pin O2 of the control chip U2 outputs a low-level signal to the switching circuit 15b, which also does not meet the turn-on condition of NMOS transistor Q2, so NMOS transistor Q2 remains off. The signal from pin O3 of the control chip U2... A high-level signal is output to the switching circuit 15c, satisfying the conduction condition of NMOS transistor Q3, and NMOS transistor Q3 is turned on; the power MOS integrated inside the control chip U2 is turned on, and the OUT+ pin of the control chip U2 outputs a power drive signal. The power drive signal is sent to the positive terminal 11a+ of heating element 11a, the positive terminal 11b+ of heating element 11b, and the positive terminal 11c+ of heating element 11c. At this time, the power drive signal passes through the positive terminal 11c+ of heating element 11c, the negative terminal 11c- of heating element 11c, and the NMOS transistor Q3 to the ground terminal, causing heating element 11c to start working.

[0106] When the first DIP switch 1441a is switched to OFF, the second DIP switch 1441b is switched to OFF, and the third DIP switch 1441c is switched to ON, the ports SS1-SS3 of the DIP switch S2 output 110 and send it to the pins SS1-SS3 of the control chip U2. Furthermore, when pin KEY or pin MIC of control chip U2 receives a trigger signal, in one example, pin KEY of control chip U2 detects a low-level signal, activating pins O1 and O2 of control chip U2. A high-level signal is output from pin O1 of control chip U2 to switching circuit 15a, satisfying the conduction condition of NMOS transistor Q1, and NMOS transistor Q1 turns on. A high-level signal is output from pin O2 of control chip U2 to switching circuit 15b, satisfying the conduction condition of NMOS transistor Q2, and NMOS transistor Q2 turns on. A low-level signal is output from pin O3 of control chip U2 to switching circuit 15c, not satisfying the conduction condition of NMOS transistor Q3, and NMOS transistor Q3 remains off. When the integrated power MOS inside chip U2 is turned on, the OUT+ pin of control chip U2 outputs a power drive signal. The power drive signal is sent to the positive terminal 11a+ of heating element 11a, the positive terminal 11b+ of heating element 11b, and the positive terminal 11c+ of heating element 11c. At this time, the power drive signal passes through the positive terminal 11a+ of heating element 11a, the negative terminal 11a- of heating element 11a, and the NMOS transistor Q1 to the ground terminal, causing heating element 11a to start working. The power drive signal passes through the positive terminal 11b+ of heating element 11b, the negative terminal 11b- of heating element 11b, and the NMOS transistor Q2 to the ground terminal, causing heating element 11b to start working. Therefore, heating elements 11a and 11b start working simultaneously.

[0107] When the first DIP switch 1441a is switched to OFF, the second DIP switch 1441b is switched to ON, and the third DIP switch 1441c is switched to OFF, the ports SS1-SS3 of the DIP switch S2 output 101 and send it to the pins SS1-SS3 of the control chip U2. Furthermore, when pin KEY or pin MIC of control chip U2 receives a trigger signal, in one example, pin KEY of control chip U2 detects a low-level signal, activating pins O1 and O3 of control chip U2. A high-level signal is output from pin O1 of control chip U2 to switching circuit 15a, satisfying the conduction condition of NMOS transistor Q1, and NMOS transistor Q1 turns on. A low-level signal is output from pin O2 of control chip U2 to switching circuit 15b, not satisfying the conduction condition of NMOS transistor Q2, and NMOS transistor Q2 remains off. A high-level signal is output from pin O3 of control chip U2 to switching circuit 15c, satisfying the conduction condition of NMOS transistor Q3, and NMOS transistor Q3 turns on. When the integrated power MOS inside chip U2 is turned on, the OUT+ pin of control chip U2 outputs a power drive signal. The power drive signal is sent to the positive terminal 11a+ of heating element 11a, the positive terminal 11b+ of heating element 11b, and the positive terminal 11c+ of heating element 11c. At this time, the power drive signal passes through the positive terminal 11a+ of heating element 11a, the negative terminal 11a- of heating element 11a, and the NMOS transistor Q1 to the ground terminal, causing heating element 11a to start working. The power drive signal passes through the positive terminal 11c+ of heating element 11c, the negative terminal 11c- of heating element 11c, and the NMOS transistor Q3 to the ground terminal, causing heating element 11c to start working. Therefore, heating elements 11a and 11c start working simultaneously.

[0108] When the first DIP switch 1441a is switched to ON, the second DIP switch 1441b is switched to OFF, and the third DIP switch 1441c is switched to OFF, the ports SS1-SS3 of the DIP switch S2 output 011 and send it to the pins SS1-SS3 of the control chip U2. Furthermore, when pin KEY or pin MIC of control chip U2 receives a trigger signal, in one example, pin KEY of control chip U2 detects a low-level signal, activating pins O2 and O3 of control chip U2. Pin O1 of control chip U2 outputs a low-level signal to switching circuit 15a, which does not meet the turn-on condition of NMOS transistor Q1, so NMOS transistor Q1 remains off. Pin O2 of control chip U2 outputs a high-level signal to switching circuit 15b, which meets the turn-on condition of NMOS transistor Q2, turning it on. Pin O3 of control chip U2 outputs a high-level signal to switching circuit 15c, which meets the turn-on condition of NMOS transistor Q3, turning it on. When the integrated power MOS inside chip U2 is turned on, the OUT+ pin of control chip U2 outputs a power drive signal. The power drive signal is sent to the positive terminal 11a+ of heating element 11a, the positive terminal 11b+ of heating element 11b, and the positive terminal 11c+ of heating element 11c. At this time, the power drive signal passes through the positive terminal 11b+ of heating element 11b, the negative terminal 11b- of heating element 11b, and the NMOS transistor Q2 to the ground terminal, causing heating element 11b to start working. The power drive signal passes through the positive terminal 11c+ of heating element 11c, the negative terminal 11c- of heating element 11c, and the NMOS transistor Q3 to the ground terminal, causing heating element 11c to start working. Therefore, heating elements 11b and 11c start working simultaneously.

[0109] When the first DIP switch 1441a, the second DIP switch 1441b, and the third DIP switch 1441c are all switched to OFF, the ports SS1-SS3 of the DIP switch S2 output 111 and send it to the pins SS1-SS3 of the control chip U2. Furthermore, when pin KEY or pin MIC of control chip U2 receives a trigger signal, in one example, pin KEY of control chip U2 detects a low-level signal, activating pins O1-O3 of control chip U2. A high-level signal is output from pin O1 of control chip U2 to switching circuit 15a, satisfying the conduction condition of NMOS transistor Q1, turning on NMOS transistor Q1. A high-level signal is output from pin O2 of control chip U2 to switching circuit 15b, satisfying the conduction condition of NMOS transistor Q2, turning on NMOS transistor Q2. A high-level signal is output from pin O3 of control chip U2 to switching circuit 15c, satisfying the conduction condition of NMOS transistor Q3, turning on NMOS transistor Q3. The power MOS integrated inside control chip U2 turns on, and pin OUT+ of control chip U2 outputs a power drive signal, power... A power drive signal is sent to the positive terminal 11a+ of heating element 11a, the positive terminal 11b+ of heating element 11b, and the positive terminal 11c+ of heating element 11c. At this time, the power drive signal passes through the positive terminal 11a+ of heating element 11a, the negative terminal 11a- of heating element 11a, and NMOS transistor Q1 to the ground terminal, causing heating element 11a to start working. The power drive signal passes through the positive terminal 11b+ of heating element 11b, the negative terminal 11b- of heating element 11b, and NMOS transistor Q2 to the ground terminal, causing heating element 11b to start working. The power drive signal passes through the positive terminal 11c+ of heating element 11c, the negative terminal 11c- of heating element 11c, and NMOS transistor Q3 to the ground terminal, causing heating element 11c to start working. Therefore, heating elements 11a, 11b, and 11c start working simultaneously.

[0110] As shown in Figure 10, the control circuit 100 also includes a display circuit 17 electrically connected between the power supply circuit 12 and the controller 13. The display circuit 17 is used to indicate the operating status of the aerosol generating device. For example, the operating status of the aerosol generating device includes battery charging status, aerosol generating device power-on, aerosol generating device power-off, etc.

[0111] As shown in Figure 11, the display circuit 17 includes an RGB indicator LED1. The RGB indicator LED1 has four pins. One pin of the RGB indicator LED1 is electrically connected to the power supply circuit 12 to receive the power supply voltage B+. The remaining three pins of the RGB indicator LED1 are electrically connected to the LED_B pin, LED_R pin, and LED_G pin of the control chip U1 or the control chip U2, respectively.

[0112] In some embodiments, the control circuit 100 further includes a charging circuit 18 electrically connected to the controller 13. The charging circuit 18 is used to provide a charging voltage to the power supply circuit 12 via an external power source. The charging circuit 18 includes a USB interface and peripheral circuitry, and is electrically connected between the USB_IN pin of the control chip U1 or the control chip U2 and the ground terminal.

[0113] In some embodiments, the control circuit 100 further includes a communication interface electrically connected to the controller 13. The communication interface is used to enable bidirectional data communication between external devices and the controller 13. For example, during the debugging process of the aerosol generating device, the debugging program is burned into the control chip U1 or the control chip U2 using the communication interface.

[0114] The control circuit provided in this application includes a power supply circuit, a switching circuit, a switching circuit, a trigger circuit, and a controller. The controller includes multiple output ports for outputting enable signals. Each switching circuit is electrically connected between the power supply circuit and the corresponding heating element, and is also electrically connected to the corresponding output port. The switching circuit is configured to send corresponding output signals to the controller according to its different switching states. The trigger circuit is configured to send a trigger signal to the controller in response to a triggering action. The controller is configured to selectively activate one or more output ports based on the output signals, and output enable signals to the corresponding switching circuits through the activated output ports based on the trigger signals, thereby controlling their on or off states. Therefore, this application embodiment can control the operation of only one heating element or at least two heating elements to start simultaneously, thereby increasing the control methods for more than two heating elements, thus enhancing the flavor function of the aerosol generating device and improving the user experience.

[0115] Please refer to Figure 12, which is a schematic diagram of an aerosol generating device provided in an embodiment of this application. As shown in Figure 12, the aerosol generating device 200 includes the control circuit 100 as described in any of the above embodiments. The aerosol generating device 200 also includes two or more heating elements, and the control circuit 100 is used to switch the two or more heating elements, so as to be able to control only one heating element to start working, or to control at least two heating elements to start working simultaneously.

[0116] Please refer to Figure 13, which is a schematic flowchart illustrating a control method for an aerosol generating device according to an embodiment of this application. The aerosol generating device includes two or more heating elements and a power supply circuit for providing power to the heating elements. As shown in Figure 13, the control method for the aerosol generating device includes:

[0117] S10: Receives the output signal of the switching circuit, which has multiple different switching states.

[0118] S20. Selectively activate one or more output ports for outputting enable signals according to the output signals corresponding to different switching states.

[0119] S30. Receive the trigger signal generated by the trigger circuit in response to the trigger action, and output an enable signal to the corresponding switching circuit through the activated output port based on the trigger signal, thereby enabling the switching circuit to turn on or off the current path between the heating element and the power supply circuit.

[0120] It is understood that the detection method provided in this application embodiment can be applied to any control circuit embodiment to produce the same beneficial effect, and will not be described again in this application embodiment.

[0121] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this application as described above, which are not provided in detail for the sake of brevity; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A control circuit for an aerosol generating device, characterized in that, The aerosol generating device includes two or more heating elements, and the control circuit includes: A power supply circuit is used to provide power to the heating element; The controller is electrically connected to the power supply circuit and the heating element respectively, and the controller includes multiple output ports for outputting enable signals; A switching circuit is electrically connected between the power supply circuit and the controller. The switching circuit has multiple different switching states and is configured to send a corresponding output signal to the controller according to the switching state. Two or more switching circuits, each of which is electrically connected between the power supply circuit and the corresponding heating element, and the switching circuit is connected to the corresponding output port to receive an enable signal; A trigger circuit is electrically connected to the power supply circuit and the controller, respectively, and the trigger circuit is configured to send a trigger signal to the controller in response to a triggering action; The controller is configured to selectively activate one or more of the output ports based on the output signal, and is configured to output an enable signal to the corresponding switching circuit through the activated output port based on the trigger signal, thereby controlling its conduction or deactivation.

2. The control circuit according to claim 1, characterized in that, The output signal includes an output voltage, and the controller is further configured to select and activate one or more of the output ports based on the magnitude of the output voltage.

3. The control circuit according to claim 2, characterized in that, The output voltage includes at least a first output voltage and a second output voltage, and the controller is further configured to activate only one of the output ports when the first output voltage is received, thereby enabling the corresponding heating element to start working. And when the second output voltage is received, at least two output ports are activated, thereby enabling at least two of the corresponding heating elements to start working simultaneously.

4. The control circuit according to claim 2 or 3, characterized in that, The switching circuit includes: The toggle switch is electrically connected to the controller. A voltage divider circuit is electrically connected between the power supply circuit and the ground terminal, and is also electrically connected to the toggle switch. The voltage divider circuit has an output node corresponding to the switching state, and is configured to send the output voltage of the corresponding output node to the controller according to the switching state of the toggle switch.

5. The control circuit according to claim 1, characterized in that, The output signal includes a switch signal, which includes at least a first switch signal and a second switch signal. The controller is also configured to activate only one of the output ports when the first switch signal is received, thereby enabling the corresponding heating element to start working. And upon receiving the second switch signal, at least two output ports are activated, thereby enabling the corresponding at least two heating elements to start working simultaneously.

6. The control circuit according to claim 5, characterized in that, The switching circuit includes a pull-up resistor and a DIP switch, and the number of DIP switch buttons is the same as the number of heating elements. One end of each DIP switch is electrically connected to the power supply circuit and the controller via a corresponding pull-up resistor, and the other end of each DIP switch is grounded. The DIP switch is configured to output a switch signal to the controller according to the switch state combination of its DIP switch, wherein each switch state combination corresponds to a switching state of the switching circuit.

7. The control circuit according to claim 4, characterized in that, The toggle switch includes: A common contact, which is electrically connected to the controller; The number of active contacts is at least one more than the number of heating elements, and the active contacts are electrically connected to the corresponding output nodes.

8. The control circuit according to claim 4 or 7, characterized in that, The aerosol generating device includes two heating elements, the toggle switch includes a common contact, a first movable contact, a second movable contact and a third movable contact, the voltage divider circuit includes a first resistor and a second resistor connected in series, and the voltage divider circuit has a first output node, a second output node and a third output node corresponding to the switching state of the toggle switch; The first output node is located between the power supply circuit and the first resistor and is electrically connected to the first active contact; the second output node is located between the first resistor and the second resistor and is electrically connected to the second active contact; and the third output node is located between the second resistor and the ground terminal and is electrically connected to the third active contact.

9. The control circuit according to claim 6, characterized in that, The aerosol generating device includes three heating elements, and the switching circuit includes a first pull-up resistor, a second pull-up resistor, a third pull-up resistor, and a DIP switch. The DIP switch includes a first DIP button, a second DIP button, and a third DIP button. Wherein, one end of the first DIP switch is electrically connected to the power supply circuit through the first pull-up resistor, one end of the second DIP switch is electrically connected to the power supply circuit through the second pull-up resistor, and one end of the third DIP switch is electrically connected to the power supply circuit through the third pull-up resistor. Furthermore, one end of each of the first, second, and third DIP switches is electrically connected to the controller. The other ends of each of the first, second, and third DIP switches are grounded.

10. The control circuit according to claim 1, characterized in that, The switching circuit includes a third resistor, a fourth resistor, and an NMOS transistor; the third resistor is electrically connected between the controller and the gate of the NMOS transistor, the fourth resistor is electrically connected between the gate of the NMOS transistor and the ground terminal, the source of the NMOS transistor is grounded, and the drain of the NMOS transistor is electrically connected to the corresponding heating element.

11. The control circuit according to claim 1, characterized in that, The triggering circuit includes an airflow sensor and / or a tactile switch.

12. The control circuit according to claim 1, characterized in that, It also includes a display circuit electrically connected between the power supply circuit and the controller, the display circuit being used to indicate the operating status of the aerosol generating device.

13. The control circuit according to claim 1, characterized in that, It also includes a charging circuit electrically connected to the controller, the charging circuit being used to provide a charging voltage to the power supply circuit via an external power source.

14. An aerosol generating device, characterized in that, Includes the control circuit as described in any one of claims 1-13.

15. A control method for an aerosol generating device, characterized in that, The aerosol generating device includes two or more heating elements and a power supply circuit for providing power to the heating elements, and the control method includes: The system receives the output signal from a switching circuit, which has multiple different switching states. Based on the output signal corresponding to each of the different switching states, one or more output ports for outputting enable signals are selectively activated. The receiving trigger circuit receives a trigger signal generated in response to the trigger action, and outputs an enable signal to the corresponding switching circuit through the activated output port based on the trigger signal, thereby enabling the switching circuit to turn on or off the current path between the heating element and the power supply circuit.

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