Aerosol generating device and system and communication method

Abstract

The invention provides an aerosol generating device, an aerosol generating system and a communication method. The aerosol generating system comprises an aerosol generating device and a power supply device, in the aerosol generating device, one end of a first resistor is electrically connected with one end of a first signal pin, the other end of the first signal pin is electrically connected with a first IO port, and the other end of the first resistor is electrically connected with a power supply; the switching circuit is configured to change the resistance value of a branch circuit where the first resistor is located in a switched-on or switched-off state; in the power supply device, one end of a second resistor is electrically connected with a power supply, the other end of the second resistor is electrically connected with one end of a second signal pin, and the other end of the second signal pin is electrically connected with a second IO port. According to the application, the corresponding analog voltage signal can be transmitted to the power supply device by controlling the switch-on or switch-off of the switching circuit in the aerosol generation device, so that the corresponding state information can be transmitted to the power supply device, two parties do not need to respond cooperatively during communication, and the communication response speed is high.

Description

Technical Field

[0001] The present application relates to the technical field of electronic atomization, and particularly to an aerosol generating device, a system and a communication method. Background Art

[0002] An existing aerosol generating system includes a split power supply device and an aerosol generating device. Through this power supply device, a user can charge the aerosol generating device in a timely manner.

[0003] After the power supply device is connected to the aerosol generating device, usually one party sends a communication request, that is, sends a string of digital signals to communicate with the other party, so as to obtain the status information of the other party. Although this communication method can transmit more information, its real-time responsiveness is insufficient, and both parties need to cooperate to respond during communication. Summary of the Invention

[0004] Embodiments of the present application provide an aerosol generating device, a system and a communication method, aiming to solve the problem of slow response in communication between the power supply device and the aerosol generating device in the prior art.

[0005] On the one hand, an embodiment of the present application provides an aerosol generating system, which includes an aerosol generating device and a power supply device independent of the aerosol generating device. The aerosol generating device is used to heat an aerosol-forming matrix to generate an aerosol, and the power supply device is used to supply power to the aerosol generating device;

[0006] The aerosol generating device includes a first controller, a first signal pin, a first resistor and at least one switching circuit; one end of the first resistor is electrically connected to one end of the first signal pin, the other end of the first signal pin is electrically connected to an IO port of the first controller, and the other end of the first resistor is electrically connected to a power supply; the switching circuit is configured to switch between a conducting state and a non-conducting state, so as to change the resistance value of the branch where the first resistor is located;

[0007] The power supply device includes a second controller, a second signal pin and a second resistor; one end of the second resistor is electrically connected to a power supply, the other end of the second resistor is electrically connected to one end of the second signal pin, and the other end of the second signal pin is electrically connected to an IO port of the second controller;

[0008] One end of the first signal pin is used to be detachably electrically connected to one end of the second signal pin.

[0009] On the other hand, an embodiment of the present application provides an aerosol generating device, including:

[0010] A heater configured to heat an aerosol-forming substrate to generate an aerosol;

[0011] A first controller having at least one IO port;

[0012] A first signal pin, one end of the first signal pin is configured to be electrically connected to an external power supply device, and the other end of the first signal pin is electrically connected to the IO port of the first controller;

[0013] A first resistor, one end of the first resistor is electrically connected to one end of the first signal pin, and the other end of the first resistor is electrically connected to a power supply;

[0014] A switching circuit configured to switch between a conducting state and a non-conducting state, thereby changing the resistance value of the branch where the first resistor is located.

[0015] Another aspect of the embodiments of the present application further provides a communication method for an aerosol generation system. The aerosol generation system includes an aerosol generation device and a power supply device independent of the aerosol generation device. The aerosol generation device is configured to heat an aerosol-forming substrate to generate an aerosol, and the power supply device is configured to supply power to the aerosol generation device;

[0016] The aerosol generation device includes a first controller, a first signal pin, a first resistor, and at least one switching circuit; one end of the first resistor is electrically connected to one end of the first signal pin, the other end of the first signal pin is electrically connected to the IO port of the first controller, and the other end of the first resistor is electrically connected to a power supply; the switching circuit is configured to switch between a conducting state and a non-conducting state, thereby changing the resistance value of the branch where the first resistor is located;;

[0017] The power supply device includes a second controller, a second signal pin, and a second resistor; one end of the second resistor is electrically connected to a power supply, the other end of the second resistor is electrically connected to one end of the second signal pin, and the other end of the second signal pin is electrically connected to the IO port of the second controller;

[0018] One end of the first signal pin is configured to be detachably electrically connected to one end of the second signal pin;

[0019] The method includes:

[0020] When the aerosol generation device is connected to the power supply device, the first controller controls the switch to conduct or disconnect, so as to change the analog voltage value of the first signal pin, thereby transmitting the status information corresponding to the aerosol generation device to the second controller;

[0021] The second controller obtains the analog voltage value of the second signal pin through the IO port of the second controller, and determines and responds to the status information corresponding to the aerosol generating device according to the analog voltage value of the second signal pin.

[0022] The aerosol generating device, system and communication method provided by this application can control the conduction or disconnection of the switching circuit in the aerosol generating device to transmit the corresponding analog voltage signal to the power supply device, and further transmit the corresponding status information to the power supply device. During communication, no cooperation and response between both parties are required, and the communication response speed is fast. Description of the Drawings

[0023] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, the drawings in the figures do not constitute a proportional limitation.

[0024] Figure 1 is a block diagram of the aerosol generating system provided by an embodiment of this application;

[0025] Figure 2 is a schematic structural diagram of the aerosol generating system provided by an embodiment of this application;

[0026] Figure 3 is a specific circuit schematic diagram of the aerosol generating system provided by an embodiment of this application;

[0027] Figure 4 is another specific circuit schematic diagram of the aerosol generating system provided by an embodiment of this application;

[0028] Figure 5 is a schematic diagram of the communication method of the aerosol generating system provided by an embodiment of this application. Detailed Description of the Embodiments

[0029] In order to make the objectives, technical solutions and advantages of this application clearer, the following further details this application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0030] It should be noted that if there is no conflict, the various features in the embodiments of this application can be combined with each other, and all are within the protection scope of this application. In addition, although the functional modules are divided in the device schematic diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different module division from the device schematic diagram or a different order from the flowchart.

[0031] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0032] In addition, the technical features involved in different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0033] It should be noted that for the pull-up resistor and pull-down resistor mentioned in the embodiments of this application, the pull-up resistor connects an uncertain signal to a high level through a resistor, making the signal initially at a high level; the pull-down resistor connects an uncertain signal to a low level through a resistor, making the signal initially at a low level.

[0034] Figure 1 is a block diagram of the aerosol generating system provided by the embodiments of this application.

[0035] As Figure 1 shown, the aerosol generating system 1000 includes an aerosol generating device 100 and a power supply device 200. The power supply device 200 is used to provide power for the aerosol generating device 100 when electrically connected to the aerosol generating device 100; the aerosol generating device 100 is used to heat the aerosol-forming substrate to generate aerosol.

[0036] The aerosol generating device 100 includes a first battery cell 11, and the first battery cell 11 provides power for the heater 12, the first controller 13, etc. Similarly, the power supply device 200 includes a second battery cell 21, and the second battery cell 21 provides power for the second controller 22, etc. When the aerosol generating device 100 is electrically connected to the power supply device 200, the second battery cell 21 can also provide power for the aerosol generating device 100, such as charging the first battery cell 11 and providing the power required for heating the heater 12.

[0037] In some embodiments, the aerosol-forming substrate can be a solid aerosol-forming substrate. The heater 12 can be configured in a sheet shape or a needle shape to be inserted into the solid aerosol-forming substrate for heating; the heater 12 can also be configured in a tubular structure to surround the solid aerosol-forming substrate for heating. The heating methods of the heater 12 include but are not limited to resistance heating, electromagnetic induction heating, and infrared radiation heating.

[0038] In some embodiments, the aerosol-forming substrate may be a liquid aerosol-forming substrate. The aerosol generating device 100 further includes a liquid storage unit and a liquid transfer unit. The liquid transfer unit may be made of cotton fiber, ceramic fiber, glass fiber, porous body, etc. By using the capillary phenomenon, the liquid aerosol-forming substrate stored in the liquid storage unit can be transferred to the heater 12. The specific structure of the heater 12 is not limited. It may be a structure wound around the liquid transfer unit, or a structure attached to or at least partially embedded in the liquid transfer unit. The heater 12 generates heat by the power provided by the first battery cell 11 in the aerosol generating device 100, and transfers the heat to the liquid aerosol-forming substrate in contact with the heater 12, so as to be able to heat the liquid aerosol-forming substrate and generate aerosol.

[0039] The aerosol generating device 100 further includes a first power pin 14, and the power supply device 200 further includes a second power pin 23 for electrically connecting to the first power pin 14. Through the first power pin 14 and the second power pin 23, power is provided for the aerosol generating device 100 and the first battery cell 11 is charged. It can be understood that both the first power pin 14 and the second power pin 23 include positive and negative power pins.

[0040] The aerosol generating device 100 further includes a first signal pin 15, and the power supply device 200 further includes a second signal pin 24. One end of the first signal pin 15 is used for electrically connecting to the second signal pin 24, and the other end of the first signal pin 15 is electrically connected to the IO port of the first controller 13, such as an IO port set as an analog input port by the first controller 13. Similarly, one end of the second signal pin 24 is used for electrically connecting to the first signal pin 15, and the other end of the second signal pin 24 is connected to the IO port of the second controller 22, such as an IO port set as an analog input port by the second controller 22.

[0041] Figure 2 It is a schematic structural diagram of the aerosol generating system provided by the embodiments of the present application.

[0042] As Figure 2 shown, the power supply device 200 is provided with a receiving groove 26 and a notch communicating the receiving groove 26 with the outside. At least part of the aerosol generating device 100 is removably received in the receiving groove 26 through the notch. Among them, a second power pin 23 (shown as VCC and GND in the figure) and a second signal pin 24 are provided on the side wall of the receiving groove 26; correspondingly, a first power pin 14 (shown as VCC and GND in the figure) and a first signal pin 15 are provided on the side wall of the aerosol generating device 100.

[0043] When the aerosol generating device 100 is received in the receiving groove 26, that is, when it is connected to the power supply device 200, one end of the first signal pin 15 is electrically connected to one end of the second signal pin 24, and the second power pin 23 is electrically connected to the first power pin 14. Conversely, when the aerosol generating device 100 is removed from the receiving groove 26, the electrical connection between the first signal pin 15 and the second signal pin 24 is disconnected, and the electrical connection between the second power pin 23 and the first power pin 14 is disconnected.

[0044] The first battery cell 11, the heater 12, and the first controller 13 are all disposed within the housing of the aerosol generating device 100, and the second battery cell 21 and the second controller 22 are both disposed within the housing of the power supply device 200.

[0045] Please refer again to Figure 1 As shown, the aerosol generating device 100 further includes a first resistor 16 and a switch circuit 17, and the power supply device 200 further includes a second resistor 25.

[0046] One end of the first resistor 16 is electrically connected to one end of the first signal pin 15, and the other end of the first resistor 16 is electrically connected to the power supply; through the first resistor 16, the first signal pin 15 can be clamped to a high level or a low level. Similarly, one end of the second resistor 25 is electrically connected to the power supply, and the other end of the second resistor 25 is electrically connected to one end of the second signal pin 24; through the second resistor 25, the second signal pin 24 can be clamped to a high level or a low level.

[0047] In one example, the first resistor 16 includes a pull-down resistor, and the second resistor 25 includes a pull-up resistor.

[0048] As Figure 3 shown, one end of the pull-down resistor R1 is electrically connected to one end of the first signal pin 15, the other end of the pull-down resistor R1 is grounded, one end of the pull-up resistor R4 is electrically connected to one end of the second signal pin 24, and the other end of the pull-up resistor R4 is electrically connected to the power supply VCC.

[0049] In this way, when the aerosol generating device 100 is not connected to the power supply device 200, the analog voltage signal obtained by the first controller 13 through its IO port, such as the ADC2 port in the figure, is a ground signal; while the analog voltage signal obtained by the second controller 22 through its IO port, such as the ADC1 port in the figure, is a VCC signal.

[0050] When the aerosol generating device 100 is connected to the power supply device 200, since one end of the first signal pin 15 is electrically connected to one end of the second signal pin 24, the pull-up resistor R4 and the pull-down resistor R1 form a circuit. At this time, the analog voltage signal obtained by the first controller 13 through the ADC2 port or the analog voltage signal obtained by the second controller 22 through the ADC1 port is the signal after the pull-up resistor R4 and the pull-down resistor R1 are voltage-divided, that is, the analog voltage signals of both change.

[0051] Based on the above principle, in one example, the first controller 13 is configured to obtain the analog voltage signal of the first signal pin 15 through the IO port of the first controller 13 to determine whether one end of the first signal pin 15 is electrically connected to one end of the second signal pin 24; and / or,

[0052] The second controller 22 is configured to obtain the analog voltage signal of the second signal pin 24 through the IO port of the second controller 22 to determine whether one end of the first signal pin 15 is electrically connected to one end of the second signal pin 24.

[0053] Furthermore, the first controller 13 is configured to determine whether one end of the first signal pin 15 is electrically connected to one end of the second signal pin 24 according to the change of the analog voltage signal of the first signal pin 15; and / or,

[0054] The second controller 22 is configured to determine whether one end of the first signal pin 15 is electrically connected to one end of the second signal pin 24 according to the change of the analog voltage signal of the second signal pin 24.

[0055] The switch circuit is configured to change the resistance value of the branch where the first resistor 16 is located in the on or off state.

[0056] For example, in Figure 3 In the example, the switch circuit 17 is connected in parallel with the first resistor 16, and the switch circuit 17 includes a switch tube and a shunt resistor connected in series. The switch tube includes but is not limited to MOS tubes, IGBTs, etc. The switch tube can be controlled by the first controller 13 to be turned on or off. When the switch tube is turned on, the shunt resistor is connected in parallel with the first resistor 16, so that when the aerosol generating device 100 is connected to the power supply device 200, the resistance value of the branch where the first resistor 16 is located can be changed, that is, the resistance value of the branch formed by the first resistor 16 and the second resistor 25 is changed, and further the signal after the first resistor 16 and the second resistor 25 are voltage-divided is changed.

[0057] Also for example, in Figure 4In the example, the switch circuit 17 is connected in series with the first resistor 16, and the switch circuit 17 includes a switching device and a voltage-dividing resistor connected in parallel. The switching device includes, but is not limited to, MOS transistors, IGBTs, etc. The switching device can be controlled by the first controller 13 to conduct or disconnect. When the switching device is disconnected, the voltage-dividing resistor is connected in series with the first resistor 16, so that when the aerosol generating device 100 is connected to the power supply device 200, the resistance value of the branch where the first resistor 16 is located can be changed, that is, the resistance value of the branch formed by the first resistor 16 and the second resistor 25 is changed, and further the signal after voltage division between the first resistor 16 and the second resistor 25 is changed.

[0058] It can be understood that Figure 3 and Figure 4 the examples of can be combined and applied, that is, the switch circuit 17 is connected in series-parallel with the first resistor 16.

[0059] Based on this, in one example, the first controller 13 is configured to control the switch circuit to conduct or disconnect when the aerosol generating device 100 is connected to the power supply device 200, so as to change the analog voltage value of the first signal pin 15, and transmit the status information corresponding to the aerosol generating device 100 to the second controller 22;

[0060] The second controller 22 is configured to obtain the analog voltage value of the second signal pin 24 through the IO port of the second controller 22, so as to determine and respond to the status information corresponding to the aerosol generating device 100 according to the analog voltage value of the second signal pin 24.

[0061] As can be seen from the above, when transmitting the status information corresponding to the aerosol generating device 100 to the second controller 22, there is no need for both parties to cooperate and respond. Therefore, the communication response speed is relatively faster, the circuit implementation is simple and reliable, and there is basically no communication error problem.

[0062] In actual work, multiple switch circuits 17 are combined to transmit more status information corresponding to the aerosol generating device 100 to the second controller 22.

[0063] Take Figure 3 as an example. The switch circuit 17 includes a first switch circuit 171 and a second switch circuit 172 connected in parallel with the first resistor 16. The first switch circuit 171 includes a first switching device Q1 and a first shunt resistor R2 connected in series, and the second switch circuit 172 includes a second switching device Q2 and a second shunt resistor R3 connected in series. The resistance values of the first shunt resistor R2 and the second shunt resistor R3 can be the same or different. In this example, the case where the resistance values of the first shunt resistor R2 and the second shunt resistor R3 are different is taken as an example for description.

[0064] When the aerosol generating device 100 is connected to the power supply device 200, if the first controller 13 controls both the first switching transistor Q1 and the second switching transistor Q2 to be turned off, the analog voltage signal obtained by the first controller 13 through the ADC2 port or the analog voltage signal obtained by the second controller 22 through the ADC1 port is the signal after voltage division by the pull-up resistor R4 and the pull-down resistor R1. Specifically, it can be calculated by the following formula: VCC*R1 / (R1 + R4).

[0065] If the first controller 13 controls the first switching transistor Q1 to be turned on and the second switching transistor Q2 to be turned off, the analog voltage signal obtained by the first controller 13 through the ADC2 port or the analog voltage signal obtained by the second controller 22 through the ADC1 port is: VCC*(R1||R2) / (R1||R2 + R4), where R1||R2 is the resistance value after the pull-down resistor R1 and the first shunt resistor R2 are connected in parallel.

[0066] If the first controller 13 controls the first switching transistor Q1 to be turned off and the second switching transistor Q2 to be turned on, the analog voltage signal obtained by the first controller 13 through the ADC2 port or the analog voltage signal obtained by the second controller 22 through the ADC1 port is: VCC*(R1||R3) / (R1||R3 + R4), where R1||R2 is the resistance value after the pull-down resistor R1 and the second shunt resistor R3 are connected in parallel.

[0067] If the first controller 13 controls both the first switching transistor Q1 and the second switching transistor Q2 to be turned on, the analog voltage signal obtained by the first controller 13 through the ADC2 port or the analog voltage signal obtained by the second controller 22 through the ADC1 port is: VCC*(R1||R2||R3) / (R1||R2||R3 + R4), where R1||R2||R3 is the resistance value after the pull-down resistor R1, the first shunt resistor R2, and the second shunt resistor R3 are connected in parallel.

[0068] From the above, it can be seen that as the first switching transistor Q1 and the second switching transistor Q2 are turned on and off differently, the analog voltage signal obtained by the first controller 13 through the ADC2 port or the analog voltage signal obtained by the second controller 22 through the ADC1 port is different, and each set of on and off can correspond to different state information of the aerosol generating device 100. For example:

[0069] Q1 Q2 Status information of the aerosol generating device 100 Disconnected Disconnected Low power state or shutdown state Conducted Disconnected The current battery level of the cell can only support one cigarette draw Disconnected Conducted The current battery level of the cell can support two cigarette draws Conducted Conducted Charging prohibited

[0070] It can be understood that if three or more switching circuits 17 are used, more state information of the aerosol generating device 100 can be transmitted to the second controller 22 according to the different on and off of the first switching transistor Q1 and the second switching transistor Q2.

[0071] It should be noted that in Figure 4 , the switching circuit 17 includes a first switching circuit 171 and a second switching circuit 172 connected in series with the first resistor 16. The first switching circuit 171 includes a first switching transistor K1 and a first voltage-dividing resistor R2 connected in parallel, and the second switching circuit 172 includes a second switching transistor K2 and a second voltage-dividing resistor R3 connected in series. The resistance values of the first voltage-dividing resistor R2 and the second voltage-dividing resistor R3 may be the same or different. Other situations can refer to the above description.

[0072] Based on the above description, in one example, the first controller 13 is configured to obtain the current power of the first battery cell 11, so as to control the switching circuit to be turned on or off according to the current power of the first battery cell 11.

[0073] For example, in Figure 3 's example, if the current power of the first battery cell 11 is only sufficient to support one cigarette puff, the first switching transistor Q1 is controlled to be turned on and the second switching transistor Q2 is controlled to be turned off.

[0074] In one example, the second controller 22 is configured to control the second battery cell 21 to supply power to the aerosol generating device 100 according to the analog voltage value of the second signal pin 24.

[0075] For example, in Figure 3 's example, when the second controller 22 detects that the analog voltage value of the second signal pin 24 is VCC*R1 / (R1 + R4), it can determine that the aerosol generating device 100 is in a low-power state. At this time, the second controller 22 controls the second battery cell 21 to automatically charge the first battery cell 11.

[0076] In a further implementation, the first controller 13 is configured to control the switching circuit to remain in an on state or an off state when the aerosol generating device 100 enters a sleep or standby state.

[0077] For example, in Figure 3 's example, before the aerosol generating device 100 enters a sleep or standby state, the first controller 13 controls both the first switching transistor Q1 and the second switching transistor Q2 to be turned off (the aerosol generating device 100 is in a low-power state). When the aerosol generating device 100 enters a sleep or standby state, the first controller 13 controls the first switching transistor Q1 and the second switching transistor Q2 to still remain in an off state. In this way, the second controller 22 can always obtain the corresponding analog voltage signal through the ADC1 port, that is, obtain the status information of the aerosol generating device 100. It solves the problem that the status information of the aerosol generating device 100 can only be obtained after waking up the aerosol generating device 100 to enter the working state, and improves the response speed.

[0078] It should be noted that, in one example, when the aerosol generating device 100 is in a low power state, the first controller 13 does not control the switching circuit to conduct or disconnect. Instead, it determines whether one end of the first signal pin 15 is electrically connected to one end of the second signal pin 24 by means of the analog voltage signal obtained through the ADC2 port.

[0079] Figure 5 It is a schematic diagram of the communication method of the aerosol generating system provided by the embodiment of the present application. The aerosol generating system can be referred to the foregoing part.

[0080] As Figure 5 shown, the method includes the steps:

[0081] S11. When the aerosol generating device 100 is connected to the power supply device 200, the first controller 13 controls the switching circuit to conduct or disconnect, so as to change the analog voltage value of the first signal pin 15, thereby transmitting the status information corresponding to the aerosol generating device 100 to the second controller 22;

[0082] S12. The second controller 22 obtains the analog voltage value of the second signal pin 24 through the IO port of the second controller 22, so as to determine and respond to the status information corresponding to the aerosol generating device 100 according to the analog voltage value of the second signal pin 24.

[0083] In one example, the method further includes:

[0084] The first controller 13 obtains the current power of the first battery cell 11, so as to control the switching circuit to conduct or disconnect according to the current power of the first battery cell 11.

[0085] In one example, the method further includes:

[0086] The second controller 22 controls the second battery cell 21 to supply power to the aerosol generating device 100 according to the analog voltage value of the second signal pin 24.

[0087] In one example, the method further includes:

[0088] When the aerosol generating device 100 enters the sleep or standby state, the first controller 13 controls the switching circuit to maintain the conducting state or the disconnecting state.

[0089] In one example, the method further includes:

[0090] The first controller 13 obtains the analog voltage signal of the first signal pin 15 through the IO port of the first controller 13, so as to determine whether one end of the first signal pin 15 is electrically connected to one end of the second signal pin 24; and / or,

[0091] The second controller 22 obtains the analog voltage signal of the second signal pin 24 through the IO port of the second controller 22 to determine whether one end of the first signal pin 15 is electrically connected to one end of the second signal pin 24.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; under the idea of the present application, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other variations in different aspects of the present application as described above. For the sake of brevity, they are not provided in detail; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An aerosol generating system, characterized in that, The aerosol generating system includes an aerosol generating device and a power supply device independent of the aerosol generating device. The aerosol generating device is configured to heat an aerosol-forming substrate to generate an aerosol, and the power supply device is configured to supply power to the aerosol generating device; The aerosol generating device includes a first controller, a first signal pin, a first resistor, and at least one switching circuit; one end of the first resistor is electrically connected to one end of the first signal pin, the other end of the first signal pin is electrically connected to an IO port of the first controller, and the other end of the first resistor is electrically connected to a power supply; The switching circuit is configured to switch between a conducting state and a non-conducting state, thereby changing the resistance value of the branch where the first resistor is located; The power supply device includes a second controller, a second signal pin, and a second resistor; one end of the second resistor is electrically connected to a power supply, the other end of the second resistor is electrically connected to one end of the second signal pin, and the other end of the second signal pin is electrically connected to an IO port of the second controller; One end of the first signal pin is configured to be detachably electrically connected to one end of the second signal pin.

2. The aerosol generating system according to claim 1, wherein The first controller is configured to set the IO port of the first controller as an analog input port, and the second controller is configured to set the IO port of the second controller as an analog input port.

3. The aerosol generating system according to claim 1, wherein The first resistor includes a pull-down resistor, and the second resistor includes a pull-up resistor.

4. The aerosol generating system according to claim 1, characterized in that, The first controller is configured to obtain an analog voltage signal of the first signal pin through the IO port of the first controller to determine whether one end of the first signal pin is electrically connected to one end of the second signal pin; and / or, The second controller is configured to obtain an analog voltage signal of the second signal pin through the IO port of the second controller to determine whether one end of the first signal pin is electrically connected to one end of the second signal pin.

5. The aerosol generating system according to claim 4, wherein The first controller is configured to determine whether one end of the first signal pin is electrically connected to one end of the second signal pin according to the change of the analog voltage signal of the first signal pin; and / or, The second controller is configured to determine whether one end of the first signal pin is electrically connected to one end of the second signal pin according to the change of the analog voltage signal of the second signal pin.

6. The aerosol generating system according to claim 1, wherein The first controller is configured to control the switching circuit to conduct or disconnect when the aerosol generating device is connected to the power supply device, thereby changing the analog voltage value of the first signal pin to transmit the state information corresponding to the aerosol generating device to the second controller; The second controller is configured to obtain the analog voltage value of the second signal pin through the IO port of the second controller to determine and respond to the state information corresponding to the aerosol generating device according to the analog voltage value of the second signal pin.

7. The aerosol-generating system according to claim 6, wherein, The aerosol generating device further includes a first battery cell, and the first controller is configured to obtain the current power of the first battery cell to control the switching circuit to conduct or disconnect according to the current power of the first battery cell.

8. The aerosol generating system according to claim 6, wherein The power supply device includes a second battery cell, and the second controller is configured to control the second battery cell to supply power to the aerosol generating device according to the analog voltage value of the second signal pin.

9. The aerosol generating system according to claim 6, wherein The first controller is configured to control the switch circuit to maintain a conducting state or a non-conducting state when the aerosol generating device enters a sleep or standby state.

10. The aerosol generating system according to claim 1, wherein The switch circuit includes a first switch circuit and a second switch circuit connected in series and / or in parallel with the first resistor.

11. An aerosol generating device, characterized in that, Comprising: A heater configured to heat an aerosol-forming substrate to generate an aerosol; A first controller having at least one IO port; A first signal pin, one end of the first signal pin is used for electrically connecting to an external power supply device, and the other end of the first signal pin is electrically connected to the IO port of the first controller; A first resistor, one end of the first resistor is electrically connected to one end of the first signal pin, and the other end of the first resistor is electrically connected to a power supply; A switch circuit configured to switch between a conducting state and a non-conducting state, thereby changing the resistance value of the branch where the first resistor is located.

12. A communication method for an aerosol generating system, characterized in that, The aerosol generating system includes an aerosol generating device and a power supply device independent of the aerosol generating device. The aerosol generating device is used for heating an aerosol-forming substrate to generate an aerosol, and the power supply device is used for supplying power to the aerosol generating device; The aerosol generating device includes a first controller, a first signal pin, a first resistor, and at least one switch circuit; one end of the first resistor is electrically connected to one end of the first signal pin, the other end of the first signal pin is electrically connected to the IO port of the first controller, and the other end of the first resistor is electrically connected to a power supply; The switch circuit is configured to switch between a conducting state and a non-conducting state, thereby changing the resistance value of the branch where the first resistor is located; The power supply device includes a second controller, a second signal pin, and a second resistor; one end of the second resistor is electrically connected to a power supply, the other end of the second resistor is electrically connected to one end of the second signal pin, and the other end of the second signal pin is electrically connected to the IO port of the second controller; One end of the first signal pin is used for detachably electrically connecting to one end of the second signal pin; The method includes: When the aerosol generating device is connected to the power supply device, the first controller controls the switch circuit to conduct or disconnect, so as to change the analog voltage value of the first signal pin, thereby transmitting the state information corresponding to the aerosol generating device to the second controller; The second controller obtains the analog voltage value of the second signal pin through the IO port of the second controller, so as to determine and respond to the state information corresponding to the aerosol generating device according to the analog voltage value of the second signal pin.

13. The method according to claim 12, wherein The aerosol generating device further includes a first battery cell; The method further includes: The first controller obtains the current power of the first battery cell, so as to control the switch circuit to conduct or disconnect according to the current power of the first battery cell.

14. The method according to claim 12, characterized in that, The power supply device includes a second battery cell; The method further includes: The second controller controls the second battery cell to supply power to the aerosol generating device according to the analog voltage value of the second signal pin.

15. The method according to claim 12, characterized in that, The method further includes: When the aerosol generating device enters the sleep or standby state, the first controller controls the switch circuit to maintain the conducting state or the off state.

16. The method according to claim 12, wherein The method further includes: The first controller obtains the analog voltage signal of the first signal pin through the IO port of the first controller to determine whether one end of the first signal pin is electrically connected to one end of the second signal pin; and / or, The second controller obtains the analog voltage signal of the second signal pin through the IO port of the second controller to determine whether one end of the first signal pin is electrically connected to one end of the second signal pin.

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