Aerosol-generating system

Abstract

The utility model relates to the technical field of aerosol generation, and particularly discloses an aerosol generation system. The device comprises a smoke cartridge and a power supply device. When the smoke cartridge and the power supply device are in a separated state, the first control circuit controls the first switching circuit to be switched on, so that the first battery cell supplies power to the first heating element; when the smoke cartridge and the power supply device are in a connection state, the first electric connection point and the second electric connection point are kept in electric connection, so that a power supply path is established between the second battery cell and the first heating element, and the second control circuit controls the second switching circuit to be switched on, so that the second battery cell supplies power to the first heating element. And meanwhile, the first control circuit controls the first switching circuit to work in a turn-off state, so that a current path between the second battery cell and the first battery cell is turned off. According to the embodiment of the invention, the second battery cell can be switched to supply power to the smoke cartridge when the smoke cartridge is connected with the power supply device, and meanwhile, the voltage backward flowing phenomenon of the first battery cell and the second battery cell is prevented, so that the circuit safety is improved.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generation, and in particular to an aerosol generation system. Background Art

[0002] A cigarette cartridge is a device that can atomize a liquid preparation to form an aerosol. In some exemplary prior arts, a cigarette cartridge is a portable device, comprising a cigarette cartridge battery and a heating element, and the cigarette cartridge battery is used to provide power to the heating element, so that the liquid matrix can be atomized to produce an aerosol. However, due to the capacity limitation of the cigarette cartridge battery, users need to frequently charge the cigarette cartridge battery or replace the cigarette cartridge battery. Therefore, in some exemplary prior arts, a power supply is proposed, which includes a power supply battery. The power supply can be connected to or separated from the cigarette cartridge. When the cigarette cartridge and the power supply are connected, the power supply battery is switched to provide power to the heating element to reduce the power consumption of the cigarette cartridge battery. However, due to the different voltages of the power supply battery and the cigarette cartridge battery, voltage backflow may occur when switching the battery power supply, affecting the circuit safety. Utility Model Content

[0003] The main technical problem solved by this application is to provide an aerosol generating system, which can switch the second battery cell to power the cigarette cartridge when the cigarette cartridge and the power supply are in a connected state, while preventing the voltage backflow between the first battery cell and the second battery cell, thereby improving the circuit safety.

[0004] To solve the above technical problems, a technical solution adopted in this application is to provide an aerosol generating system, comprising:

[0005] A cigarette cartridge comprising a first heating element, a first battery cell, a first switching circuit connected in series between the first heating element and the first battery cell, and a first control circuit electrically connected to the first switching circuit, the cigarette cartridge further comprising a first electrical connection point respectively connected to the first heating element and the first switching circuit;

[0006] A power supply capable of being connected to or disconnected from the cigarette cartridge, the power supply comprising a second battery cell, a second switching circuit, and a second electrical connection point electrically connected in sequence, and a second control circuit electrically connected to the second switching circuit;

[0007] Wherein, when the cigarette cartridge and the power supply are in a separated state, the first control circuit is configured to control the first switch circuit to operate in a conducting state, so that the first battery cell provides power to the first heating element;

[0008] When the cigarette cartridge is in a connected state with the power supply, the first electrical connection point and the second electrical connection point remain electrically connected, thereby establishing a power supply path between the second battery cell and the first heating element, and the second control circuit is configured to control the second switch circuit to be turned on, so that the second battery cell provides power to the first heating element;

[0009] The first control circuit is configured to trigger the first switch circuit to operate in an off state in response to the connection between the cigarette cartridge and the power supply, thereby cutting off the current path between the second battery cell and the first battery cell.

[0010] Optionally, the power supply further includes a signal transmission unit electrically connected to the second control circuit, and the signal transmission unit is configured to establish a communication connection between the first control circuit and the second control circuit when the cigarette cartridge is in a connected state with the power supply.

[0011] Optionally, the signal transmission unit includes:

[0012] a first signal transmission circuit, comprising a third electrical connection point, wherein when the cigarette cartridge is connected to the power supply, the first signal transmission circuit establishes an electrical connection with the first control circuit via the third electrical connection point and is configured to transmit cigarette cartridge data between the first control circuit and the second control circuit;

[0013] The second signal transmission circuit includes a fourth electrical connection point. When the cigarette cartridge is in a connected state with the power supply, the second signal transmission circuit establishes an electrical connection with the first control circuit through the fourth electrical connection point and is configured to transmit the suction signal generated by the airflow sensor of the cigarette cartridge between the first control circuit and the second control circuit.

[0014] Optionally, the first signal transmission circuit further includes a first NMOS transistor and a first resistor;

[0015] The drain of the first NMOS transistor is electrically connected to the second control circuit, the source of the first NMOS transistor is grounded, the gate of the first NMOS transistor is electrically connected to the third electrical connection point, and the first resistor is electrically connected between the gate of the first NMOS transistor and the ground terminal.

[0016] Optionally, the second signal transmission circuit further includes a second NMOS transistor and a second resistor;

[0017] The gate of the second NMOS transistor is electrically connected to the second control circuit, the source of the second NMOS transistor is grounded, the drain of the second NMOS transistor is electrically connected to the fourth electrical connection point, and the second resistor is electrically connected between the gate of the second NMOS transistor and the ground terminal.

[0018] Optionally, the cigarette cartridge further includes an airflow sensor, wherein the airflow sensor is electrically connected between the first heating element and the first switching circuit, and the airflow sensor is also electrically connected to the first electrical connection point and the first control circuit respectively;

[0019] When the cigarette cartridge is in a separated state from the power supply, the airflow sensor is configured to send a puff signal to the first control circuit;

[0020] When the cigarette cartridge is in a connected state with the power supply, the first control circuit establishes a communication connection with the second control circuit, and the airflow sensor is configured to send a puff signal to the first control circuit so that the first control circuit forwards the puff signal to the second control circuit; or, when the cigarette cartridge is in a connected state with the power supply, the airflow sensor establishes an electrical connection with the second control circuit, and the airflow sensor is configured to send the puff signal to the second control circuit.

[0021] Optionally, the cigarette cartridge further includes a second heating element, and when the cigarette cartridge is in a connected state with the power supply, the second heating element establishes an electrical connection with the power supply.

[0022] Optionally, the cigarette cartridge further includes a fifth electrical connection point and a sixth electrical connection point electrically connected to both ends of the second heating element, and the sixth electrical connection point is grounded;

[0023] The power supply further includes a seventh electrical connection point and an eighth electrical connection point, wherein the eighth electrical connection point is grounded;

[0024] Wherein, when the cigarette cartridge is in a connected state with the power supply, the fifth electrical connection point and the seventh electrical connection point remain electrically connected, and the sixth electrical connection point and the eighth electrical connection point remain electrically connected.

[0025] Optionally, the second heating element and the first heating element share a ground pin.

[0026] Optionally, the power supply further includes a detection circuit electrically connected to the second control circuit, the second battery cell and the seventh electrical connection point, and the second control circuit is configured to detect whether the cigarette cartridge and the power supply are in a connected state through the detection circuit, and to detect the resistance of the second heating element when the cigarette cartridge and the power supply are in a connected state.

[0027] Optionally, the detection circuit includes:

[0028] a first sampling circuit, electrically connected between the seventh electrical connection point and the ground terminal, the first sampling circuit being provided with a first sampling node, the first sampling node being electrically connected to the second control circuit, the first sampling circuit being configured to output a first sampling voltage from the first sampling node, so that the second control circuit detects whether the cigarette cartridge is in a connected state with the power supply based on the first sampling voltage;

[0029] A resistance detection circuit is electrically connected between the second battery cell and the seventh electrical connection point, and is electrically connected to the second control circuit and the first sampling circuit respectively. The resistance detection circuit is configured to output a second sampling voltage from the first sampling node through the first sampling circuit when the cigarette cartridge is in a connected state with the power supply, so that the second control circuit detects the resistance of the second heating element based on the second sampling voltage.

[0030] Optionally, the power supply also includes a driving circuit electrically connected to the second control circuit, the second battery cell and the seventh electrical connection point, and the second control circuit is configured to output a driving signal of corresponding power according to the resistance value of the second heating element, so that the driving circuit drives the second heating element based on the driving signal.

[0031] Optionally, the power supply further includes a second sampling circuit, one end of the second sampling circuit being electrically connected between the second switching circuit and the second electrical connection point, the other end of the second sampling circuit being electrically connected to the second control circuit, the second sampling circuit being provided with a second sampling node, the second sampling node being electrically connected to the second control circuit, the second sampling circuit being configured to be turned on or off according to the control of the second control circuit, and outputting a third sampling voltage from the second sampling node when turned on, so that the second control circuit detects whether the current path between the second battery cell and the first battery cell is in an off state based on the third sampling voltage.

[0032] Optionally, the cigarette cartridge further includes a display circuit electrically connected between the first control circuit and the first battery cell, and the display circuit is configured to display cigarette cartridge data.

[0033] Optionally, the power supply further includes a charging circuit electrically connected to the second battery cell and the second control circuit, and the charging circuit is configured to charge the second battery cell.

[0034] In an embodiment of the present application, when the cigarette cartridge is connected to the power supply, the first electrical connection point and the second electrical connection point remain electrically connected, thereby establishing a power supply path between the second battery cell and the first heating element. The second control circuit controls the second switch circuit to conduct, so that the second battery cell provides power to the first heating element. At the same time, the first control circuit controls the first switch circuit to operate in the off state, thereby shutting off the current path between the second battery cell and the first battery cell. Therefore, when the cigarette cartridge is connected to the power supply, the embodiment of the present application switches the second battery cell to provide power to the first heating element, and by shutting off the current path between the second battery cell and the first battery cell, it effectively prevents voltage backflow from occurring between the first battery cell and the second battery cell, thereby improving circuit safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0036] Figure 1 Schematic diagram of the structure of an aerosol generating system according to an embodiment of the present application;

[0037] Figure 2 Schematic diagram of the structure of an aerosol generating system according to an embodiment of the present application;

[0038] Figure 3 Schematic diagram of the structure of an aerosol generating system according to an embodiment of the present application;

[0039] Figure 4 is a circuit connection diagram of an embodiment of the present application including a first electrical connection point, a first switching circuit, a first heating element, an airflow sensor, and a second heating element;

[0040] Figure 5 is a circuit connection diagram of a first control circuit in an embodiment of the present application;

[0041] Figure 6 is a circuit connection diagram of an embodiment of the present application including a second electrical connection point, a second switch circuit, and a second sampling circuit;

[0042] Figure 7 is a circuit connection diagram of a first signal transmission circuit according to an embodiment of the present application;

[0043] Figure 8 is a circuit connection diagram of a second signal transmission circuit in an embodiment of the present application;

[0044] Figure 91 is a circuit connection diagram of an embodiment of the present application including a seventh electrical connection point, an eighth electrical connection point, a first sampling circuit, a resistance detection circuit, and a driving circuit;

[0045] Figure 10 This is a circuit connection diagram of a charging circuit according to an embodiment of the present application. DETAILED DESCRIPTION

[0046] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "locked to" another element, it can be directly on the other element, or there can be one or more centered elements between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements between them. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0047] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification and 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" as used in this specification includes any and all combinations of one or more of the relevant listed items.

[0048] See also Figure 1 、 Figure 4 、 Figure 5 and Figure 6 The aerosol generating system 100 includes a cigarette cartridge 10 and a power supply 20 .

[0049] The cigarette cartridge 10 includes a first heating element 11, a first battery cell 12, a first switching circuit 13 connected in series between the first heating element 11 and the first battery cell 12, and a first control circuit 14 electrically connected to the first switching circuit 13. The cigarette cartridge also includes a first electrical connection point 101 connected to the first heating element 11 and the first switching circuit 13 respectively.

[0050] The power supply 20 can be connected to or separated from the cigarette cartridge 10. The power supply 20 includes a second battery cell 21, a second switch circuit 22 and a second electrical connection point 201 electrically connected in sequence, and a second control circuit 23 electrically connected to the second switch circuit 22.

[0051] It can be understood that the power supply 20 can include a cigarette rod, a cigarette box, a power bank, etc. in form to achieve connection or separation with the cigarette cartridge 10.

[0052] When the cigarette cartridge 10 and the power supply 20 are in a separated state, the first control circuit 14 is configured to control the first switch circuit 13 to operate in an on state, so that the first battery cell 12 provides power to the first heating element 11 .

[0053] As can be seen, the first battery cell 12 is an independent power source for the cigarette cartridge 10, allowing the cigarette cartridge 10 to be smoked independently. The first control circuit 14 controls the first switch circuit 13 to be turned on or off, thereby switching on or off the current loop between the first battery cell 12 and the first heating element 11.

[0054] When the cigarette cartridge 10 is in a connected state with the power supply 20, the first electrical connection point 101 and the second electrical connection point 201 remain electrically connected, thereby establishing a power supply path between the second battery cell 21 and the first heating element 11, and the second control circuit 23 is configured to be able to control the second switching circuit 22 to be turned on, so that the second battery cell 21 provides power to the first heating element 11.

[0055] The first control circuit 14 is configured to trigger and control the first switch circuit 13 to operate in an off state in response to the connection between the cigarette cartridge 10 and the power supply 20 , thereby cutting off the current path between the second battery cell 21 and the first battery cell 12 .

[0056] In one example, the power supply 20 includes a storage chamber for accommodating the cigarette cartridge 10. The cigarette cartridge 10 and the power supply 20 are in a connected state, including placing at least a portion of the cigarette cartridge 10 in the storage chamber of the power supply 20. For example, the cigarette cartridge 10 includes a main body and a mouthpiece portion connected to the main body. During use, the main body of the cigarette cartridge 10 can be accommodated in the storage chamber of the power supply 20 and the mouthpiece portion is exposed, so that the cigarette cartridge 10 and the power supply 20 are combined into an integral atomization device, which is provided to the user for inhalation. It is understandable that the cigarette cartridge 10 and the power supply 20 can be combined by a physical connection method, so that a part of the cigarette cartridge 10 is retained in the storage chamber of the power supply 20. Common physical connection methods can be magnetic connection, plug-in connection, snap-on connection, threaded connection or interference fit. When the cigarette cartridge 10 and the power supply 20 are in a connected state, the first electrical connection point 101 and the second electrical connection point 201 remain electrically connected.

[0057] In one example, the first electrical connection point 101 is a spring pin, and the second electrical connection point 201 is a contact. As previously described, the second electrical connection point 201 is exposed on the surface of the storage chamber. When the cigarette cartridge 10 is placed in the storage chamber, the first electrical connection point 101 and the second electrical connection point 201 abut against each other, thereby achieving electrical connection between the first electrical connection point 101 and the second electrical connection point 201.

[0058] It is understood that the first electrical connection point 101 and the second electrical connection point 201 can be other electrical connection combinations. For example, the first electrical connection point 101 is a contact point, and the second electrical connection point 201 is a spring pin. For another example, the first electrical connection point 101 and the second electrical connection point 201 are both welding points, and the first electrical connection point 101 and the second electrical connection point 201 are electrically connected by welding the first electrical connection point 101 and the second electrical connection point 201.

[0059] like Figure 4 As shown, the first battery cell 12 is used to output the voltage VBAT1.

[0060] In one example, the first battery cell 12 is a disposable battery cell. If the first battery cell 12 is low or completely depleted, the first battery cell 12 can be replaced to provide power to the first heating element 11 when the cigarette cartridge 10 and the power supply 20 are disconnected. Alternatively, when the cigarette cartridge 10 and the power supply 20 are connected, the second battery cell 21 can be switched to provide power to the first heating element 11. In this case, the power level of the first battery cell 12 does not need to be considered.

[0061] In one example, the first battery cell 12 is a rechargeable battery cell. The first battery cell 12 can be any suitable power source, such as a DC source, such as 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. It is understood that the first battery cell 12 can be charged by the charging circuit built into the cigarette cartridge 10, and can also be charged by the second battery cell 12 using the charging circuit built into the power supply 20.

[0062] The cigarette cartridge 10 further includes an electrical connection point PEN_GND and an electrical connection point PEN_VBAT1 . The electrical connection point PEN_GND is grounded, and the electrical connection point PEN_VBAT1 is electrically connected to the first switch circuit 13 .

[0063] In one example, the electrical connection point PEN_GND and the electrical connection point PEN_VBAT1 are electrically connected to the positive and negative electrodes of the first battery cell 12 , respectively. That is, the electrical connection point PEN_GND and the electrical connection point PEN_VBAT1 are electrode contacts of the first battery cell 12 .

[0064] In one example, the electrical connection point PEN_GND and the electrical connection point PEN_VBAT1 can be omitted, the positive electrode of the first battery cell 12 is used to provide the output voltage VBAT1 for the first switching circuit 13, and the negative electrode of the first battery cell 12 is grounded.

[0065] In some embodiments, the first switch circuit 13 includes a PMOS transistor Q3 , a PMOS transistor Q4 , an NMOS transistor Q5 , a resistor R3 , and a resistor R4 .

[0066] The drain of the PMOS transistor Q3 is electrically connected to the first battery cell 12 (the electrical connection point PEN_VBAT1 shown in the figure is used to receive the output voltage VBAT1 of the first battery cell 12), the source of the PMOS transistor Q3 is electrically connected to the source of the PMOS transistor Q4, the gate of the PMOS transistor Q3 is electrically connected to the drain of the NMOS transistor Q5 and the gate of the PMOS transistor Q4, respectively, the drain of the PMOS transistor Q4 is electrically connected to the first electrical connection point 101, the gate of the NMOS transistor Q5 is electrically connected to the first control circuit 14 (the gate of the NMOS transistor Q5 has an OUT1 pin, which is electrically connected to the OUT1 pin of the control chip U1), the source of the NMOS transistor Q5 is grounded, the resistor R3 is electrically connected between the drain of the PMOS transistor Q3 and the gate of the NMOS transistor Q5, and the resistor R4 is electrically connected between the source of the PMOS transistor Q3 and the gate of the PMOS transistor Q3.

[0067] Specifically, when the cigarette cartridge 10 and the power supply 20 are in a separated state, the control chip U1 outputs a driving level from the OUT1 pin to the gate of the third NMOS tube Q5 in response to the puffing action, satisfying the conduction condition of the NMOS tube Q5, and the NMOS tube Q5 is turned on, thereby pulling down the gate voltage of the PMOS tube Q3 and the gate voltage of the PMOS tube Q4, satisfying the conduction condition of the PMOS tube Q3 and the PMOS tube Q4, and both the PMOS tube Q3 and the PMOS tube Q4 are turned on, so that the output voltage VBAT1 of the first battery cell 12 reaches the first heating element 11 through the PMOS tube Q3 and the PMOS tube Q4, providing power for the first heating element 11.

[0068] like Figure 5 As shown, the first control circuit 14 includes a control chip U1 and its peripheral circuits. Among them, the control chip U1 includes an OUT1 pin, a MIC_OUT pin, a VDD pin, a GND pin, an electrical connection point 104, and an electrical connection point 105. The peripheral circuit of the control chip U1 includes a resistor R8 and a capacitor C1. The resistor R8 is electrically connected between the first battery cell 12 and the VDD pin of the control chip U1. One end of the capacitor C1 is electrically connected between the resistor R8 and the VDD pin of the control chip U1, and the other end of the capacitor C1 is grounded. The GND pin of the control chip U1 is grounded. When the cigarette cartridge 10 is in a connected state with the power supply 20, the electrical connection point 104 and the electrical connection point 105 are used to maintain electrical connection with the corresponding electrical connection points of the cigarette cartridge 10 respectively, so as to realize data communication between the control chip U1 and the second control circuit 23.

[0069] In some embodiments, the first control circuit 14 may be omitted. In this case, the first switch circuit 13 may be controlled to be turned on or off by, for example, an airflow sensor controller.

[0070] like Figure 6 As shown, the second battery cell 21 is used to output the voltage VBAT2.

[0071] In the embodiment of the present application, the second battery cell 12 is a rechargeable battery cell that can be recharged to replenish its power when its power is low or nearly depleted. The second battery cell 12 can be any suitable power source, such as a DC source, such as 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.

[0072] In some embodiments, the second switch circuit 22 includes a PMOS transistor Q6 , an NMOS transistor Q7 , a resistor R5 , and a resistor R6 .

[0073] The source of the PMOS tube Q6 is electrically connected to the second battery cell 21 (for receiving the output voltage VBAT2 of the second battery cell 21), the drain of the PMOS tube Q6 is electrically connected to the second electrical connection point 201, the gate of the PMOS tube Q6 is electrically connected to the drain of the NMOS tube Q7, the gate of the NMOS tube Q7 is electrically connected to the second control circuit 23 (the gate of the NMOS tube Q7 has a PWM2 pin, which is electrically connected to the PWM2 pin of the second control circuit 23, and the second control circuit 23 is not shown in the figure), the source of the NMOS tube Q7 is grounded, the resistor R5 is electrically connected between the source of the PMOS tube Q6 and the gate of the PMOS tube Q6, and the resistor R6 is electrically connected between the gate of the NMOS tube Q7 and the ground terminal.

[0074] Specifically, when the cigarette cartridge 10 is in a connected state with the power supply 20, the first electrical connection point 101 and the second electrical connection point 201 remain electrically connected, and the control chip U1 triggers the output of the driving level from the OUT1 pin to the gate of the NMOS tube Q5 in response to the connection between the cigarette cartridge 10 and the power supply 20. The conduction condition of the NMOS tube Q5 is not met, and the NMOS tube Q5 is turned off, thereby not meeting the conduction conditions of the PMOS tube Q3 and the PMOS tube Q4. The PMOS tube Q3 and the PMOS tube Q4 are both turned off, and the current loop between the first battery cell 12 and the first heating element 11 is cut off; at the same time, the second control circuit 2 The PWM2 pin outputs a drive voltage to the gate of the NMOS transistor Q7, satisfying the conduction condition of the NMOS transistor Q7. The NMOS transistor Q7 is turned on, thereby pulling down the gate voltage of the PMOS transistor Q6. This satisfies the conduction condition of the PMOS transistor Q6, causing the PMOS transistor Q6 to be turned on. The output voltage VBAT2 of the second battery cell 21 passes through the PMOS transistor Q6, the second electrical connection point 201, and the first electrical connection point 101 to reach the first heating element 11 (the two pins of the first heating element 11 are electrically connected to the electrical connection points WH1 and WH2, respectively), providing power to the first heating element 11. Because the PMOS transistors Q3 and Q4 are both turned off, the output voltage VBAT2 of the second battery cell 21 cannot continue to pass through the PMOS transistors Q3 and Q4 to reach the first battery cell 12 after passing through the PMOS transistor Q6, the second electrical connection point 201, and the first electrical connection point 101. This shuts down the current loop between the second battery cell 21 and the first battery cell 12.

[0075] It should be noted that the capacity of the second battery cell 12 is greater than that of the first battery cell 12. When the cigarette cartridge 10 is connected to the power supply 20, the second battery cell 12 preferably provides power to the first heating element 11, thereby reducing the power consumption of the first battery cell 12. In addition, due to the larger capacity of the second battery cell 12, on the one hand, it can improve the endurance of the cigarette cartridge 10, and on the other hand, it can also increase the output power of the cigarette cartridge 10, increase the amount of smoke, and enhance the user experience.

[0076] In summary, when the cigarette cartridge 10 is connected to the power supply 20, the first control circuit 14 immediately controls the first switch circuit 13 to turn off, so as to cut off the current loop between the first battery cell 12 and the first heating element 11, cut off the power supply to the first battery cell 12, avoid power consumption of the first battery cell 12, and save energy. In addition, the first switch circuit 13 operates in the off state, thereby cutting off the current path between the second battery cell 21 and the first battery cell 12, thereby achieving isolation between the first battery cell 12 and the second battery cell 12, and preventing voltage backflow from occurring in the first battery cell 12 and the second battery cell 12. At the same time, the second control circuit 23 immediately controls the second switch circuit 22 to turn on, so that the second battery cell 21 provides power to the first heating element 11, so that the first heating element 11 switches from the first battery cell 12 to the second battery cell 21 for power supply.

[0077] See also Figure 2 、 Figure 5 、 Figure 7 and Figure 8 ,exist Figure 1 Based on the provided embodiment, the power supply 20 also includes a signal transmission unit 24, which is electrically connected to the second control circuit 23. The signal transmission unit 24 is configured to establish a communication connection between the first control circuit 14 and the second control circuit 23 when the cigarette cartridge 10 is in a connected state with the power supply 20.

[0078] In an example, the signal transmission unit 24 includes a first signal transmission circuit 241 and a second signal transmission circuit 242 .

[0079] The first signal transmission circuit 241 includes a third electrical connection point 202. When the cigarette cartridge 10 and the power supply 20 are in a connected state, the first signal transmission circuit 241 establishes an electrical connection with the first control circuit 14 through the third electrical connection point 202 and is configured to transmit cigarette cartridge data between the first control circuit 14 and the second control circuit 23.

[0080] For example, the cartridge data includes the amount of e-liquid, battery level, puff time, number of puffs, operating voltage, etc.

[0081] like Figure 7 As shown, the first signal transmission circuit 241 further includes a first NMOS transistor Q1 and a first resistor R1. The drain of the first NMOS transistor Q1 is electrically connected to the second control circuit 23 (the drain of the first NMOS transistor Q1 has an RST pin, which is electrically connected to the RST pin of the second control circuit 23; the second control circuit 23 is not shown in the figure). The source of the first NMOS transistor Q1 is grounded, the gate of the first NMOS transistor Q1 is electrically connected to the third electrical connection point 202, and the first resistor R1 is electrically connected between the gate of the first NMOS transistor Q1 and the ground terminal.

[0082] In some embodiments, the first signal transmission circuit 241 further includes a resistor electrically connected between the drain of the first NMOS transistor Q1 and the gate of the first NMOS transistor Q1 .

[0083] The first signal transmission circuit 241 is electrically connected to the second control circuit 23. The control chip U1 includes an electrical connection point 104. When the cigarette cartridge 10 and the power supply 20 are in a connected state, the third electrical connection point 202 and Figure 5 The electrical connection point 104 is electrically connected to realize bidirectional data communication between the second control circuit 23 and the control chip U1. The first NMOS transistor Q1 isolates the second control circuit 23 from the control chip U1 to avoid the influence of different voltage levels between the second control circuit 23 and the control chip U1.

[0084] The second signal transmission circuit 242 includes a fourth electrical connection point 203. When the cigarette cartridge 10 and the power supply 20 are in a connected state, the second signal transmission circuit 242 establishes an electrical connection with the first control circuit 14 through the fourth electrical connection point 203 and is configured to transmit the suction signal generated by the airflow sensor of the cigarette cartridge 10 between the first control circuit 14 and the second control circuit 23.

[0085] In one example, the cigarette cartridge 10 includes a mouthpiece, a puffing action acts on the mouthpiece, and a puffing signal is generated by the airflow sensor 15 in response to the puffing action.

[0086] like Figure 8 As shown, the second signal transmission circuit 242 includes a second NMOS transistor Q2 and a second resistor R2. The gate of the second NMOS transistor Q2 is electrically connected to the second control circuit 23 (the gate of the second NMOS transistor Q2 has a SMOKE_KEY pin, which is electrically connected to the SMOKE_KEY pin of the second control circuit 23; the second control circuit 23 is not shown in the figure). The source of the second NMOS transistor Q2 is grounded, and the drain of the second NMOS transistor Q2 is electrically connected to the fourth electrical connection point 203. The second resistor R2 is electrically connected between the gate of the second NMOS transistor Q2 and the ground terminal.

[0087] In some embodiments, the second signal transmission circuit 242 further includes a resistor electrically connected between the drain of the second NMOS transistor Q2 and the gate of the second NMOS transistor Q2 .

[0088] The second signal transmission circuit 242 is electrically connected to the second control circuit 23. The control chip U1 includes an electrical connection point 105. When the cigarette cartridge 10 and the power supply 20 are in a connected state, the fourth electrical connection point 203 and Figure 5The electrical connection point 105 is electrically connected to realize bidirectional data communication between the second control circuit 23 and the control chip U1. The second NMOS transistor Q2 isolates the second control circuit 23 from the control chip U1 to avoid the influence of different voltage levels between the second control circuit 23 and the control chip U1.

[0089] In some embodiments, the first signal transmission circuit 241 may be used to transmit the suction signal between the first control circuit 14 and the second control circuit 23 , and the second signal transmission circuit 242 may be used to transmit the cartridge data between the first control circuit 14 and the second control circuit 23 .

[0090] See also Figure 3 On the basis of the above embodiment, the cigarette cartridge 10 further includes an airflow sensor 15, which is electrically connected between the first heating element 11 and the first switching circuit 13, and the airflow sensor 15 is also electrically connected to the first electrical connection point 101 and the first control circuit 14 respectively.

[0091] One end of the airflow sensor 15 is electrically connected to the first heating element 11 and the first control circuit 14 , respectively, and the other end of the airflow sensor 15 is electrically connected to the first electrical connection point 101 and the first switch circuit 13 , respectively.

[0092] When the cigarette cartridge 10 and the power supply 20 are in a separated state, the airflow sensor 15 is configured to send a puff signal to the first control circuit 14 .

[0093] When the cigarette cartridge 10 is in a connected state with the power supply 20, the first control circuit 14 establishes a communication connection with the second control circuit 23, and the airflow sensor 15 is configured to send a suction signal to the first control circuit 14 so that the first control circuit 14 forwards the suction signal to the second control circuit 23; or, when the cigarette cartridge 10 is in a connected state with the power supply 20, the airflow sensor 15 establishes an electrical connection with the second control circuit 23, and the airflow sensor 15 is configured to send a suction signal to the second control circuit 23.

[0094] The airflow sensor 15 is provided with a signal transmission component. When the cigarette cartridge 10 and the power supply 20 are in a connected state, the airflow sensor 15 establishes an electrical connection with the second control circuit 23 through the signal transmission component.

[0095] Illustratively, the signal transmission component includes a spring pin.

[0096] In summary, when the cigarette cartridge 10 and the power supply 20 are in a connected state, the airflow sensor 15 can send a suction signal to the first control circuit 14 in response to the suction action, and then forward the suction signal to the second control circuit 23 through the data communication between the first control circuit 14 and the second control circuit 23; it can also send the suction signal directly to the second control circuit 23 through the signal transmission component in response to the suction action, so that the second control circuit 23 controls the relevant circuits to perform preset actions according to the suction signal.

[0097] Illustratively, the first heating element 11 includes a first pin and a second pin, the first pin is electrically connected to the airflow sensor 15 , and the second pin is grounded.

[0098] On the basis of any of the above embodiments, the cigarette cartridge 10 further includes a second heating element 16 . When the cigarette cartridge 10 is connected to the power supply 20 , the second heating element 16 establishes an electrical connection with the power supply 20 .

[0099] The power supply 20 provides power to the first heating element 11 and the second heating element 16. Because the second battery cell 21 of the power supply 20 is a high-capacity cell, it can support the simultaneous operation of the first heating element 11 and the second heating element 16, thereby increasing the output power of the cigarette cartridge 10, increasing the amount of vapor produced, and improving the user experience. In some embodiments, the number of heating elements in the cigarette cartridge 10 can be greater than two.

[0100] The cigarette cartridge 10 further includes a fifth electrical connection point 102 and a sixth electrical connection point 103 electrically connected to both ends of the second heating element 16. The sixth electrical connection point 103 is grounded. The power supply further includes a seventh electrical connection point 204 and an eighth electrical connection point 205. The eighth electrical connection point 205 is grounded.

[0101] Among them, when the cigarette cartridge 10 and the power supply 20 are in a connected state, the fifth electrical connection point 102 and the seventh electrical connection point 204 remain electrically connected, and the sixth electrical connection point 103 and the eighth electrical connection point 205 remain electrically connected.

[0102] For example, the second heating element 16 includes a third pin and a fourth pin, the third pin is electrically connected to the fifth electrical connection point 102 , and the fourth pin is electrically connected to the sixth electrical connection point 103 .

[0103] In one example, the second heating element 16 and the first heating element 11 share a common ground pin.

[0104] Please refer again Figure 4, the first pin is electrically connected to the electrical connection point WH1, the second pin is electrically connected to the electrical connection point WH2, the third pin is electrically connected to the electrical connection point WH3, and the fourth pin is electrically connected to the electrical connection point WH2. Thus, the second pin of the first heating element 11 and the fourth pin of the second heating element 16 share one pin, both are electrically connected to the electrical connection point WH2, and the electrical connection point WH2 is grounded, that is, the second heating element 16 and the first heating element 11 share one ground pin.

[0105] Furthermore, the electrical connection point WH1 has a MIC_OUT pin, which is electrically connected to Figure 5 The MIC_OUT pin of the control chip U1 and the airflow sensor J1 are shown. The puff signal generated by the airflow sensor J1 is sent to the MIC_OUT pin of the control chip U1 via the MIC_OUT pin. The electrical connection point WH2 is also electrically connected to the sixth electrical connection point 103, and the electrical connection point WH3 is also electrically connected to the fifth electrical connection point 102. It can be seen that by setting the second heating element 16 and the first heating element 11 to share a ground pin, the number of connection points can be reduced, the structure can be simplified, space can be saved, and the miniaturization of the cigarette cartridge 10 can be facilitated.

[0106] In some embodiments, the cigarette cartridge 10 further includes a resistor R7, which is electrically connected between the airflow sensor J1 and the MIC_OUT pin of the control chip U1 to prevent signal interference.

[0107] On the basis of any of the above embodiments, the cigarette cartridge 10 further includes a display circuit 17 electrically connected between the first control circuit 14 and the first battery cell 12 , and the display circuit 17 is configured to display cigarette cartridge data.

[0108] By providing the display circuit 17 , the user can view the information on the display interface of the cigarette cartridge 10 , thereby increasing interactivity.

[0109] In some embodiments, the display circuit 17 may be provided on a side of the power supply 20 .

[0110] See also Figure 3 and Figure 9 Based on the embodiment in which the cigarette cartridge 10 includes the second heating element 16, the power supply 20 further includes a detection circuit 25, which is electrically connected to the second control circuit 23, the second battery cell 21 and the seventh electrical connection point 204. The second control circuit 23 is configured to detect whether the cigarette cartridge 10 and the power supply 20 are in a connected state through the detection circuit 25, and to detect the resistance value of the second heating element 16 when the cigarette cartridge 10 and the power supply 20 are in a connected state.

[0111] In one example, the detection circuit 25 includes a first sampling circuit 251 and a resistance detection circuit 252 .

[0112] The first sampling circuit 251 is electrically connected between the seventh electrical connection point 204 and the ground terminal. The first sampling circuit 251 is provided with a first sampling node, which is electrically connected to the second control circuit 23. The first sampling circuit 251 is configured to output a first sampling voltage from the first sampling node so that the second control circuit 23 detects whether the cigarette cartridge 10 and the power supply 20 are in a connected state based on the first sampling voltage.

[0113] like Figure 9 As shown, the first sampling circuit 251 includes a resistor R9 and a resistor R10 connected in series. One end of the resistor R9 is electrically connected to the seventh electrical connection point 204, and one end of the resistor R10 is grounded. A first sampling node 25a is provided between the connection line between the resistors R9 and R10. The first sampling node 25a leads to the ADC1 pin, which is electrically connected to the ADC1 pin of the second control circuit 23. The voltage at the seventh electrical connection point 204 sampled by the resistors R9 and R10 is output as a first sampled voltage from the ADC1 pin and sent to the second control circuit 23, so that the second control circuit 23 detects whether the cigarette cartridge 10 and the power supply 20 are connected based on the first sampled voltage.

[0114] The resistance detection circuit 252 is electrically connected between the second battery cell 21 and the seventh electrical connection point 204, and is electrically connected to the second control circuit 23 and the first sampling circuit 251 respectively. The resistance detection circuit 252 is configured to output a second sampling voltage from the first sampling node through the first sampling circuit 251 when the cigarette cartridge 10 is in a connected state with the power supply 20, so that the second control circuit 23 detects the resistance of the second heating element 16 based on the second sampling voltage.

[0115] like Figure 9 As shown, the resistance detection circuit 252 includes a PMOS transistor Q8, an NMOS transistor Q9, a resistor R11, a resistor R12, a resistor R13, and a capacitor C2. The source of the PMOS transistor Q8 is electrically connected to the second battery cell 21 (the source of the PMOS transistor Q8 is used to receive the output voltage VBAT2), the drain of the PMOS transistor Q8 is electrically connected to the seventh electrical connection point 204 through the resistor R11, the gate of the PMOS transistor Q8 is electrically connected to the drain of the NMOS transistor Q9, and the gate of the NMOS transistor Q9 is electrically connected to the second control circuit 23 (the gate of the NMOS transistor Q9 has an EN pin, which is electrically connected to the EN pin of the second control circuit 23; the second control circuit 23 is not shown in the figure), the source of the NMOS transistor Q9 is grounded, the resistor R12 is electrically connected between the source of the PMOS transistor Q8 and the gate of the PMOS transistor Q8, the resistor R13 is electrically connected between the gate of the NMOS transistor Q9 and the ground terminal, and the capacitor C2 is electrically connected between the seventh electrical connection point 204 and the ground terminal.

[0116] Specifically, when the cigarette cartridge 10 is in a connected state with the power supply 20, the EN pin of the second control circuit 23 outputs a driving level to the gate of the NMOS tube Q9, satisfying the conduction condition of the NMOS tube Q9. The NMOS tube Q9 is turned on, thereby lowering the gate voltage of the PMOS tube Q8. The PMOS tube Q8 meets the conduction condition, and the PMOS tube Q8 is turned on, thereby selecting the current loop of the second battery cell 21, the PMOS tube Q8, the resistor R11 and the capacitor C2.

[0117] It is understood that the first sampling circuit 251 and the resistance detection circuit 252 can operate alternately. For example, the ADC1 pin of the second control circuit 23 and the EN pin of the second control circuit 23 can be controlled to periodically output a drive level, so that the first sampling circuit 251 and the resistance detection circuit 252 can operate alternately. For another example, the duty cycle of the drive level output by the ADC1 pin of the second control circuit 23 and the EN pin of the second control circuit 23 can be controlled to cause the first sampling circuit 251 and the resistance detection circuit 252 to operate alternately.

[0118] Based on the above embodiment, the power supply 20 also includes a drive circuit 26, which is electrically connected to the second control circuit 23, the second battery cell 21 and the seventh electrical connection point 204. The second control circuit 23 is configured to output a drive signal of corresponding power according to the resistance value of the second heating element 16, so that the drive circuit 26 drives the second heating element 16 based on the drive signal.

[0119] like Figure 9 As shown, the drive circuit 26 includes a PMOS transistor Q10, an NMOS transistor Q11, a resistor R14, and a resistor R15. The source of the PMOS transistor Q10 is electrically connected to the second battery cell 21 (the source of the PMOS transistor Q10 is used to receive the output voltage VBAT2), the drain of the PMOS transistor Q10 is electrically connected to the seventh electrical connection point 204, the gate of the PMOS transistor Q10 is electrically connected to the drain of the NMOS transistor Q11, and the gate of the NMOS transistor Q11 is electrically connected to the second control circuit 23 (the gate of the NMOS transistor Q11 has a PWM1 pin, which is electrically connected to the PWM1 pin of the second control circuit 23; the second control circuit 23 is not shown in the figure). The source of the NMOS transistor Q11 is grounded, the resistor R14 is electrically connected between the source of the PMOS transistor Q10 and the gate of the PMOS transistor Q10, and the resistor R15 is electrically connected between the gate of the NMOS transistor Q11 and the ground terminal.

[0120] It can be understood that the duty cycle of the PWM1 pin of the second control circuit 23 is controlled according to the resistance value of the second heating element 16, thereby realizing the power regulation function of the second heating element 16 and improving the heating effect.

[0121] In the embodiment of the present application, the power supply 20 provides power to the first heating element 11 and the second heating element 16. The power of the first heating element 11 is not adjustable, while the power of the second heating element 16 is adjustable. In some embodiments, the power of the first heating element 11 and the second heating element 16 are both adjustable, or the power of the first heating element 11 and the second heating element 16 are both not adjustable.

[0122] Based on any of the above embodiments, the power supply 20 further includes a second sampling circuit 27, one end of the second sampling circuit 27 is electrically connected between the second switching circuit 22 and the second electrical connection point 201, and the other end of the second sampling circuit 27 is electrically connected to the second control circuit 23. The second sampling circuit 27 is provided with a second sampling node, and the second sampling node is electrically connected to the second control circuit 23. The second sampling circuit 27 is configured to be turned on or off according to the control of the second control circuit 23, and outputs a third sampling voltage from the second sampling node when turned on, so that the second control circuit 23 detects whether the current path between the second battery cell 21 and the first battery cell 12 is in an off state based on the third sampling voltage.

[0123] Please refer again Figure 6 The second sampling circuit 27 includes a resistor R16 and a resistor R17 connected in series. One end of the resistor R16 is electrically connected between the third PMOS transistor Q6 and the second electrical connection point 201. One end of the resistor R17 has a Check pin, which is electrically connected to the Check pin of the second control circuit 23. A second sampling node 27a is located between the connection line between the resistors R16 and R17. The second sampling node 27a leads to an ADC2 pin, which is electrically connected to the ADC2 pin of the second control circuit 23. The Check pin of the second control circuit 23 outputs a control signal to determine whether the second sampling circuit 27 is enabled. When the second sampling circuit 27 is enabled, the resistors R16 and R17 sample the voltage at the second electrical connection point 201, output a third sampled voltage from the ADC2 pin, and send it to the second control circuit 23. Based on the third sampled voltage, the second control circuit 23 detects whether the current path between the second battery cell 21 and the first battery cell 12 is in the off state.

[0124] Based on any of the above embodiments, the power supply 20 further includes a charging circuit 28 electrically connected to the second battery cell 21 and the second control circuit 23 . The charging circuit 28 is configured to charge the second battery cell 21 .

[0125] like Figure 10As shown, the charging circuit 28 includes a charging chip U2, a diode D1, a resistor R18, a capacitor C3, a resistor R19, a resistor R20, a resistor R21, a resistor R22 and a capacitor C4. The connection relationship of each component is shown in the figure. Among them, the charging chip U2 is electrically connected between the external charging device and the second battery cell 21. In one example, when the external charging device is plugged into the USB interface of the power supply 20, it provides a charging voltage to the power supply 20, which is processed by the charging chip U2 and then charges the second battery cell 21. A voltage divider node is provided between the connection line of the resistor R19 and the resistor R20. The voltage divider node leads to a USB pin, which is electrically connected to a USB pin of the second control circuit 23 (not shown in the figure) so that the second control circuit 23 detects the magnitude of the charging voltage according to the voltage of the voltage divider node.

[0126] In some embodiments, the charging circuit 28 is electrically connected between the second battery cell 21 and the first battery cell 12. The charging circuit 28 is configured to charge the first battery cell 12 through the second battery cell 21, replenish the power of the first battery cell 12, improve the battery life of the cigarette cartridge 10, and increase the puffing time of the cigarette cartridge 10 alone.

[0127] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of this application. However, the present application can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments are not intended to be additional limitations on the content of this application. The purpose of providing these embodiments is to make the understanding of the disclosure of this application more thorough and comprehensive. In addition, the above-mentioned technical features can be combined with each other to form various embodiments not listed above, which are all considered to be within the scope of the description of this application; further, it is obvious to those skilled in the art that improvements or changes can be made based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. An aerosol generating system, characterized in that include: A cigarette cartridge comprising a first heating element, a first battery cell, a first switching circuit connected in series between the first heating element and the first battery cell, and a first control circuit electrically connected to the first switching circuit, the cigarette cartridge further comprising a first electrical connection point respectively connected to the first heating element and the first switching circuit; A power supply capable of being connected to or disconnected from the cigarette cartridge, the power supply comprising a second battery cell, a second switching circuit, and a second electrical connection point electrically connected in sequence, and a second control circuit electrically connected to the second switching circuit; Wherein, when the cigarette cartridge and the power supply are in a separated state, the first control circuit is configured to control the first switch circuit to operate in a conducting state, so that the first battery cell provides power to the first heating element; When the cigarette cartridge is in a connected state with the power supply, the first electrical connection point and the second electrical connection point remain electrically connected, thereby establishing a power supply path between the second battery cell and the first heating element, and the second control circuit is configured to control the second switch circuit to be turned on, so that the second battery cell provides power to the first heating element; The first control circuit is configured to trigger the first switch circuit to operate in an off state in response to the connection between the cigarette cartridge and the power supply, thereby cutting off the current path between the second battery cell and the first battery cell.

2. The aerosol generating system according to claim 1, wherein: The power supply further includes a signal transmission unit electrically connected to the second control circuit, and the signal transmission unit is configured to establish a communication connection between the first control circuit and the second control circuit when the cigarette cartridge is in a connected state with the power supply.

3. The aerosol generating system according to claim 2, wherein: The signal transmission unit includes: a first signal transmission circuit, comprising a third electrical connection point, wherein when the cigarette cartridge is connected to the power supply, the first signal transmission circuit establishes an electrical connection with the first control circuit via the third electrical connection point and is configured to transmit cigarette cartridge data between the first control circuit and the second control circuit; The second signal transmission circuit includes a fourth electrical connection point. When the cigarette cartridge is in a connected state with the power supply, the second signal transmission circuit establishes an electrical connection with the first control circuit through the fourth electrical connection point and is configured to transmit the suction signal generated by the airflow sensor of the cigarette cartridge between the first control circuit and the second control circuit.

4. The aerosol generating system according to claim 3, wherein: The first signal transmission circuit further includes a first NMOS transistor and a first resistor; The drain of the first NMOS transistor is electrically connected to the second control circuit, the source of the first NMOS transistor is grounded, the gate of the first NMOS transistor is electrically connected to the third electrical connection point, and the first resistor is electrically connected between the gate of the first NMOS transistor and the ground terminal.

5. The aerosol generating system according to claim 3, wherein: The second signal transmission circuit further includes a second NMOS transistor and a second resistor; The gate of the second NMOS transistor is electrically connected to the second control circuit, the source of the second NMOS transistor is grounded, the drain of the second NMOS transistor is electrically connected to the fourth electrical connection point, and the second resistor is electrically connected between the gate of the second NMOS transistor and the ground terminal.

6. The aerosol generating system according to claim 1, wherein: The cigarette cartridge further includes an airflow sensor, which is electrically connected between the first heating element and the first switching circuit, and the airflow sensor is also electrically connected to the first electrical connection point and the first control circuit respectively; When the cigarette cartridge is in a separated state from the power supply, the airflow sensor is configured to send a puff signal to the first control circuit; When the cigarette cartridge is in a connected state with the power supply, the first control circuit establishes a communication connection with the second control circuit, and the airflow sensor is configured to send a puff signal to the first control circuit so that the first control circuit forwards the puff signal to the second control circuit; or, when the cigarette cartridge is in a connected state with the power supply, the airflow sensor establishes an electrical connection with the second control circuit, and the airflow sensor is configured to send the puff signal to the second control circuit.

7. An aerosol generating system according to any one of claims 1 to 6, characterized in that The cigarette cartridge further includes a second heating element. When the cigarette cartridge is in a connected state with the power supply, the second heating element establishes an electrical connection with the power supply.

8. The aerosol generating system according to claim 7, wherein: The cigarette cartridge further includes a fifth electrical connection point and a sixth electrical connection point electrically connected to both ends of the second heating element, and the sixth electrical connection point is grounded; The power supply further includes a seventh electrical connection point and an eighth electrical connection point, wherein the eighth electrical connection point is grounded; Wherein, when the cigarette cartridge is in a connected state with the power supply, the fifth electrical connection point and the seventh electrical connection point remain electrically connected, and the sixth electrical connection point and the eighth electrical connection point remain electrically connected.

9. The aerosol generating system according to claim 7, wherein: The second heating element and the first heating element share a ground pin.

10. The aerosol generating system according to claim 8, wherein: The power supply also includes a detection circuit electrically connected to the second control circuit, the second battery cell and the seventh electrical connection point, and the second control circuit is configured to detect whether the cigarette cartridge and the power supply are in a connected state through the detection circuit, and detect the resistance value of the second heating element when the cigarette cartridge and the power supply are in a connected state.

11. An aerosol generating system according to claim 10, characterized in that The detection circuit comprises: a first sampling circuit, electrically connected between the seventh electrical connection point and the ground terminal, the first sampling circuit being provided with a first sampling node, the first sampling node being electrically connected to the second control circuit, the first sampling circuit being configured to output a first sampling voltage from the first sampling node, so that the second control circuit detects whether the cigarette cartridge is in a connected state with the power supply based on the first sampling voltage; A resistance detection circuit is electrically connected between the second battery cell and the seventh electrical connection point, and is electrically connected to the second control circuit and the first sampling circuit respectively. The resistance detection circuit is configured to output a second sampling voltage from the first sampling node through the first sampling circuit when the cigarette cartridge is in a connected state with the power supply, so that the second control circuit detects the resistance of the second heating element based on the second sampling voltage.

12. The aerosol generating system according to claim 8, wherein: The power supply also includes a drive circuit electrically connected to the second control circuit, the second battery cell and the seventh electrical connection point, and the second control circuit is configured to output a drive signal of corresponding power according to the resistance value of the second heating element, so that the drive circuit drives the second heating element based on the drive signal.

13. The aerosol generating system according to claim 1, wherein: The power supply also includes a second sampling circuit, one end of the second sampling circuit is electrically connected between the second switching circuit and the second electrical connection point, the other end of the second sampling circuit is electrically connected to the second control circuit, the second sampling circuit is provided with a second sampling node, the second sampling node is electrically connected to the second control circuit, the second sampling circuit is configured to be turned on or off according to the control of the second control circuit, and when turned on, outputs a third sampling voltage from the second sampling node, so that the second control circuit detects whether the current path between the second battery cell and the first battery cell is in an off state based on the third sampling voltage.

14. The aerosol generating system according to claim 1, wherein: The cigarette cartridge further includes a display circuit electrically connected between the first control circuit and the first battery core, and the display circuit is configured to display cigarette cartridge data.

15. The aerosol generating system according to claim 1, wherein The power supply further includes a charging circuit electrically connected to the second battery cell and the second control circuit, and the charging circuit is configured to charge the second battery cell.

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