Aerosol-generating system

Abstract

The invention 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] This application relates to the field of aerosol generation technology, and in particular to an aerosol generation system. Background Technology

[0002] A cartridge is a device that atomizes a liquid preparation into an aerosol. In some exemplary prior art, a cartridge is a portable device including a cartridge battery and a heating element. The cartridge battery provides power to the heating element, thereby enabling the atomization of the liquid matrix to produce an aerosol. However, due to the capacity limitation of the cartridge battery, users need to frequently charge or replace the cartridge battery. Therefore, in some exemplary prior art, a power supply device is proposed, which includes a power supply battery. The power supply device can be connected to or disconnected from the cartridge. When the cartridge and the power supply device are connected, the power supply battery is switched to provide power to the heating element to reduce the power consumption of the cartridge battery. However, because the voltage of the power supply battery and the cartridge battery are different, voltage reverse flow may occur when switching the battery power supply, affecting circuit safety. Summary of the Invention

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

[0004] To solve the above-mentioned technical problems, one technical solution adopted in this application is: to provide an aerosol generation system, comprising:

[0005] The cartridge includes 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 cartridge also includes a first electrical connection point that is respectively connected to the first heating element and the first switching circuit.

[0006] A power supply that can be connected to or disconnected from the cartridge, the power supply comprising a second battery cell, a second switching circuit, and a second electrical connection point connected in sequence, and a second control circuit connected to the second switching circuit;

[0007] When the cartridge and the power supply are separated, the first control circuit is configured to control the first switching circuit to operate in the on state, so that the first battery cell provides power to the first heating element.

[0008] When the 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 is configured to control the second switching circuit to conduct so that the second battery cell provides power to the first heating element.

[0009] The first control circuit is configured to control the first switching circuit to operate in the off state in response to the connection between the 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. The signal transmission unit is configured to establish a communication connection between the first control circuit and the second control circuit when the cartridge is connected to the power supply.

[0011] Optionally, the signal transmission unit includes:

[0012] A first signal transmission circuit includes a third electrical connection point. When the cartridge is connected to the power supply, the first signal transmission circuit establishes an electrical connection with the first control circuit through the third electrical connection point and is configured to transmit 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 cartridge is connected to 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 inhalation signal generated by the airflow sensor of the 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 cartridge further includes an airflow sensor, which is electrically connected between the first heating element and the first switching circuit, and is also electrically connected to the first electrical connection point and the first control circuit respectively.

[0019] When the cartridge is separated from the power supply, the airflow sensor is configured to send a suction signal to the first control circuit.

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

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

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

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

[0024] When the cigarette cartridge is connected to 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 grounding 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. The second control circuit is configured to detect whether the cartridge and the power supply are connected via the detection circuit, and to detect the resistance of the second heating element when the cartridge and the power supply are connected.

[0027] Optionally, the detection circuit includes:

[0028] A first sampling circuit is electrically connected between the seventh electrical connection point and the ground terminal. The first sampling circuit is provided with a first sampling node. The first sampling node is electrically connected to the second control circuit. The first sampling circuit is configured to output a first sampling voltage from the first sampling node so that the second control circuit can detect whether the cartridge and the power supply are in a connected state 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 also electrically connected to the second control circuit and the first sampling circuit. The resistance detection circuit is configured to output a second sampling voltage from the first sampling node through the first sampling circuit when the cartridge is connected to the power supply, so that the second control circuit can detect the resistance of the second heating element based on the second sampling voltage.

[0030] Optionally, the power supply further includes a drive circuit electrically connected to the second control circuit, the second battery cell, and the seventh electrical connection point. The second control circuit is configured to output a drive signal with 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.

[0031] Optionally, the power supply further includes a second sampling circuit, one end of which is electrically connected between the second switching circuit and the second electrical connection point, and the other end of which is electrically connected to the second control circuit. The second sampling circuit is provided with a second sampling node, which is electrically connected to the second control circuit. The second sampling circuit is configured to turn on or off according to the control of the second control circuit, and when it is on, it outputs a third sampling voltage from the second sampling node so that the second control circuit can detect whether the current path between the second cell and the first cell is in a turned-off state based on the third sampling voltage.

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

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

[0034] In this embodiment, when the cartridge and the power supply are connected, 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 switching circuit to conduct, so that the second battery cell provides power to the first heating element. Simultaneously, the first control circuit controls the first switching circuit to operate in the off state, thereby cutting off the current path between the second battery cell and the first battery cell. Therefore, this embodiment switches the second battery cell to provide power to the first heating element when the cartridge and the power supply are connected, and effectively prevents voltage reverse flow between the first and second battery cells by cutting off the current path between the second and first battery cells, thereby improving circuit safety. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of an aerosol generation system according to an embodiment of this application;

[0037] Figure 2 This is a schematic diagram of the structure of an aerosol generation system according to an embodiment of this application;

[0038] Figure 3 This is a schematic diagram of the structure of an aerosol generation system according to an embodiment of this application;

[0039] Figure 4 This is a schematic diagram of a circuit connection including a first electrical connection point, a first switching circuit, a first heating element, an airflow sensor, and a second heating element, according to an embodiment of this application.

[0040] Figure 5 This is a circuit connection diagram of a first control circuit according to an embodiment of this application;

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

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

[0043] Figure 8 This is a circuit connection diagram of a second signal transmission circuit according to an embodiment of this application;

[0044] Figure 9This 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 this application. Detailed Implementation

[0046] To facilitate understanding of this application, a more detailed description is provided below with reference to 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 one or more intermediate elements may exist between them. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist 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 meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0048] Please see Figure 1 , Figure 4 , Figure 5 and Figure 6 The aerosol generation system 100 includes a smoke cartridge 10 and a power supply 20.

[0049] The 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 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 or disconnected from the cartridge 10. The power supply 20 includes a second battery cell 21, a second switching circuit 22 and a second electrical connection point 201 connected in sequence, and a second control circuit 23 connected to the second switching circuit 22.

[0051] It is understandable that the power supply 20 may include a cigarette holder, cigarette box, power bank, etc., to achieve connection or separation with the cigarette cartridge 10.

[0052] When the cartridge 10 is separated from the power supply 20, the first control circuit 14 is configured to control the first switching circuit 13 to operate in the 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 cartridge 10, allowing the cartridge 10 to be inhaled independently. The first control circuit 14 controls the first switching circuit 13 to be turned on or off, thereby selecting or cutting off the current loop between the first battery cell 12 and the first heating element 11.

[0054] When the cartridge 10 is connected to the power supply 20, the first electrical connection point 101 and the second electrical connection point 201 are electrically connected, thereby establishing a power supply path between the second battery cell 21 and the first heating element 11. The second control circuit 23 is configured to control the second switching circuit 22 to conduct 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 the first switch circuit 13 to operate in the off state in response to the connection between the 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 receiving chamber for accommodating a cartridge 10. The cartridge 10 being connected to the power supply 20 involves placing at least a portion of the cartridge 10 within the receiving chamber of the power supply 20. For example, the cartridge 10 includes a main body and a mouthpiece attached to the main body. In use, the main body of the cartridge 10 can be housed within the receiving chamber of the power supply 20, exposing the mouthpiece. Thus, the cartridge 10 and the power supply 20 are combined into a single atomizing device for the user to inhale. It is understood that the cartridge 10 and the power supply 20 can be combined through a physical connection, thereby keeping a portion of the cartridge 10 within the receiving chamber of the power supply 20. Common physical connection methods include magnetic connection, plug-in connection, snap-fit ​​connection, threaded connection, or interference fit. When the cartridge 10 and the power supply 20 are connected, 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 receiving chamber. When the cartridge 10 is placed in the receiving chamber, the first electrical connection point 101 and the second electrical connection point 201 come into contact, thereby achieving an 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 can be a contact and the second electrical connection point 201 can be a spring pin; or, for example, both the first electrical connection point 101 and the second electrical connection point 201 can be solder joints, and the first electrical connection point 101 and the second electrical connection point 201 can be electrically connected by soldering the first electrical connection point 101 and the second electrical connection point 201.

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

[0060] In one example, the first battery cell 12 is a disposable battery cell. If the first battery cell 12 is in a low-charge state or completely depleted, when the cartridge 10 is disconnected from the power supply 20, power is supplied to the first heating element 11 by replacing the first battery cell 12. Alternatively, when the cartridge 10 is connected to the power supply 20, power is supplied to the first heating element 11 by switching to the second battery cell 21. In this case, the charge 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 power source, or a battery. In one example, the battery is a lithium-ion battery, or it 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 via the charging circuit built into the cartridge 10, and it can also be charged via the charging circuit built into the power supply 20 using the second battery cell 12.

[0062] The cartridge 10 also includes electrical connection points PEN_GND and PEN_VBAT1. PEN_GND is grounded, and PEN_VBAT1 is electrically connected to the first switching circuit 13.

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

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

[0065] In some embodiments, the first switching 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 PMOS transistor Q3 is electrically connected to the first battery cell 12 (as shown in the figure, the electrical connection point PEN_VBAT1 is used to receive the output voltage VBAT1 of the first battery cell 12). The source of PMOS transistor Q3 is electrically connected to the source of PMOS transistor Q4. The gate of PMOS transistor Q3 is electrically connected to the drain of NMOS transistor Q5 and the gate of PMOS transistor Q4 respectively. The drain of PMOS transistor Q4 is electrically connected to the first electrical connection point 101. The gate of NMOS transistor Q5 is electrically connected to the first control circuit 14 (the gate of NMOS transistor Q5 has an OUT1 pin, which is electrically connected to the OUT1 pin of control chip U1). The source of NMOS transistor Q5 is grounded. Resistor R3 is electrically connected between the drain of PMOS transistor Q3 and the gate of NMOS transistor Q5. Resistor R4 is electrically connected between the source of PMOS transistor Q3 and the gate of PMOS transistor Q3.

[0067] Specifically, when the cartridge 10 is separated from the power supply 20, the control chip U1 responds to the inhalation action by outputting a drive level from the OUT1 pin to the gate of the third NMOS transistor Q5, satisfying the conduction condition of NMOS transistor Q5. NMOS transistor Q5 is turned on, thereby pulling down the gate voltage of PMOS transistor Q3 and the gate voltage of PMOS transistor Q4, satisfying the conduction condition of PMOS transistor Q3 and PMOS transistor Q4. Both PMOS transistors Q3 and Q4 are turned on, so that the output voltage VBAT1 of the first battery cell 12 reaches the first heating element 11 through PMOS transistors Q3 and Q4, providing power to the first heating element 11.

[0068] like Figure 5 As shown, the first control circuit 14 includes a control chip U1 and its peripheral circuitry. The control chip U1 includes an OUT1 pin, a MIC_OUT pin, a VDD pin, a GND pin, electrical connection points 104 and 105. The peripheral circuitry of the control chip U1 includes a resistor R8 and a capacitor C1. Resistor R8 is electrically connected between the first battery cell 12 and the VDD pin of the control chip U1. One end of capacitor C1 is electrically connected between resistor R8 and the VDD pin of the control chip U1, and the other end of capacitor C1 is grounded. The GND pin of the control chip U1 is grounded. When the cartridge 10 is connected to the power supply 20, electrical connection points 104 and 105 are used to maintain electrical connection with the corresponding electrical connection points of the cartridge 10, respectively, to achieve 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 switching circuit 13 can be controlled to be turned on or off, for example, by an airflow sensor controller.

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

[0071] In this embodiment, the second battery cell 12 is a rechargeable battery cell, capable of replenishing its power when it is low or about to be depleted. The second battery cell 12 can be any suitable power source, such as a DC power source, or a battery. In one example, the battery is a lithium-ion battery; alternatively, the battery can be a nickel-metal hydride battery, a nickel-cadmium battery, or a lithium-based battery, such as a lithium cobalt, lithium iron phosphate, lithium titanate, or lithium polymer battery.

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

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

[0074] Specifically, when the cartridge 10 is connected to the power supply 20, the first electrical connection point 101 and the second electrical connection point 201 remain electrically connected. In response to the connection between the cartridge 10 and the power supply 20, the control chip U1 outputs a drive level from the OUT1 pin to the gate of the NMOS transistor Q5. Since the conduction condition of NMOS transistor Q5 is not met, NMOS transistor Q5 is turned off. Consequently, the conduction conditions of PMOS transistors Q3 and Q4 are not met, and both PMOS transistors Q3 and Q4 are turned off, thus cutting off the current loop between the first battery cell 12 and the first heating element 11. Simultaneously, the second control circuit 2... 3. The drive level is output from the PWM2 pin to the gate of NMOS transistor Q7, satisfying the conduction condition of NMOS transistor Q7. NMOS transistor Q7 conducts, thereby pulling down the gate voltage of PMOS transistor Q6, satisfying the conduction condition of PMOS transistor Q6, and PMOS transistor Q6 conducts. This allows the output voltage VBAT2 of the second battery cell 21 to reach the first heating element 11 (the two pins of the first heating element 11 are electrically connected to electrical connection points WH1 and WH2 respectively) through PMOS transistor Q6, the second electrical connection point 201, and the first electrical connection point 101, providing power to the first heating element 11. Since PMOS transistors Q3 and Q4 are both off, the output voltage VBAT2 of the second battery cell 21, after passing through PMOS transistors Q6, the second electrical connection point 201, and the first electrical connection point 101, cannot continue to reach the first battery cell 12 through PMOS transistors Q3 and Q4, thus turning off 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 cartridge 10 is connected to the power supply 20, it is preferable that the second battery cell 12 provides power to the first heating element 11, which can reduce the power consumption of the first battery cell 12. In addition, since the second battery cell 12 has a larger capacity, it can improve the battery life of the cartridge 10 and also increase the output power of the cartridge 10, increase the amount of vapor, and improve the user experience.

[0076] In summary, when the cartridge 10 is connected to the power supply 20, the first control circuit 14 immediately controls the first switch circuit 13 to turn off, thereby cutting off the current loop between the first battery cell 12 and the first heating element 11, shutting off the power supply to the first battery cell 12, avoiding power consumption of the first battery cell 12, and saving energy. Furthermore, 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, thus achieving isolation between the first battery cell 12 and the second battery cell 12, preventing voltage reverse flow between the first battery cell 12 and the second battery cell 12. Simultaneously, 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, switching the power supply of the first heating element 11 from the first battery cell 12 to the second battery cell 21.

[0077] Please see Figure 2 , Figure 5 , Figure 7 and Figure 8 ,exist Figure 1 Based on the provided embodiments, the power supply 20 further includes a signal transmission unit 24 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 cartridge 10 is connected to the power supply 20.

[0078] In one 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 cartridge 10 is connected to the power supply 20, 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 cartridge data between the first control circuit 14 and the second control circuit 23.

[0080] For example, the data for a tobacco cartridge includes e-liquid volume, battery level, vaping time, number of puffs, and operating voltage.

[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, which 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, and the control chip U1 includes an electrical connection point 104. When the cartridge 10 is connected to the power supply 20, the third electrical connection point 202 and... Figure 5 The electrical connection point 104 shown enables 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, preventing the influence of different voltage levels between them.

[0084] The second signal transmission circuit 242 includes a fourth electrical connection point 203. When the cartridge 10 is connected to the power supply 20, 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 inhalation signal generated by the airflow sensor of the cartridge 10 between the first control circuit 14 and the second control circuit 23.

[0085] In one example, the cartridge 10 includes a mouthpiece, and a sucking action is performed on the mouthpiece, generating a sucking signal in response to the sucking action via an airflow sensor 15.

[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, which 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, and the control chip U1 includes an electrical connection point 105. When the cartridge 10 is connected to the power supply 20, the fourth electrical connection point 203 and... Figure 5The electrical connection point 105 shown enables 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, preventing the influence of different voltage levels between them.

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

[0090] Please see Figure 3 Based on the above embodiments, the cigarette cartridge 10 also includes an airflow sensor 15, which is electrically connected between the first heating element 11 and the first switching circuit 13, and 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 cartridge 10 is disconnected from the power supply 20, the airflow sensor 15 is configured to send a suction signal to the first control circuit 14.

[0093] When the cartridge 10 is connected to 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 cartridge 10 is connected to 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 equipped with a signal transmission component. When the cartridge 10 and the power supply 20 are connected, the airflow sensor 15 establishes an electrical connection with the second control circuit 23 through the signal transmission component.

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

[0096] In summary, when the cartridge 10 and the power supply 20 are connected, 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 data communication between the first control circuit 14 and the second control circuit 23; or it can 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] For example, the first heating element 11 includes a first pin and a second pin, the first pin being electrically connected to the airflow sensor 15 and the second pin being grounded.

[0098] Based on any of the above embodiments, the cartridge 10 further includes a second heating element 16, which establishes an electrical connection with the power supply 20 when the cartridge 10 is connected to the power supply 20.

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

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

[0101] When the smoke cartridge 10 is connected to the power supply 20, 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 being electrically connected to a fifth electrical connection point 102 and the fourth pin being electrically connected to a sixth electrical connection point 103.

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

[0104] Please refer to it again. Figure 4The 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 a single pin, both of which are electrically connected to the electrical connection point WH2. The electrical connection point WH2 is grounded, meaning that the second heating element 16 and the first heating element 11 share a single grounding pin.

[0105] Furthermore, the electrical connection point WH1 has a MI C_OUT pin, which is electrically connected to Figure 5 The control chip U1 shown has an MIC_OUT pin, and the airflow sensor J1 generates a suction signal that is sent to the control chip U1's MIC_OUT pin via the MIC_OUT pin. Electrical connection point WH2 is also electrically connected to the sixth electrical connection point 103, and electrical connection point WH3 is also electrically connected to the fifth electrical connection point 102. It is evident that by setting the second heating element 16 and the first heating element 11 to share a single ground pin, the number of connection points can be reduced, simplifying the structure, saving space, and facilitating the miniaturization of the cartridge 10.

[0106] In some embodiments, the 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] Based on any of the above embodiments, the 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 cartridge data.

[0108] By setting up the display circuit 17, users can view information on the display interface of the cigarette cartridge 10, increasing interactivity.

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

[0110] Please see Figure 3 and Figure 9 Based on the embodiment in which the cartridge 10 includes a second heating element 16, the power supply 20 further includes a detection circuit 25 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 cartridge 10 and the power supply 20 are connected through the detection circuit 25, and to detect the resistance value of the second heating element 16 when the cartridge 10 and the power supply 20 are connected.

[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. The first sampling node 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 can detect whether the cartridge 10 and the power supply 20 are connected based on the first sampling voltage.

[0113] like Figure 9 As shown, the first sampling circuit 251 includes resistors R9 and R10 connected in series. One end of resistor R9 is electrically connected to the seventh electrical connection point 204, and one end of resistor R10 is grounded. A first sampling node 25a is provided in the middle of the connection line between resistors R9 and R10. The first sampling node 25a leads out an ADC1 pin, which is electrically connected to the ADC1 pin of the second control circuit 23. The voltage of the seventh electrical connection point 204 sampled by resistors R9 and R10 is output from the ADC1 pin as a first sampling voltage and sent to the second control circuit 23, so that the second control circuit 23 can detect whether the cartridge 10 and the power supply 20 are connected based on the first sampling 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 also 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 cartridge 10 is connected to the power supply 20, so that the second control circuit 23 can detect 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, resistors R11, R12, and R13, and a capacitor C2. The source of PMOS transistor Q8 is electrically connected to the second battery cell 21 (the source of PMOS transistor Q8 is used to receive the output voltage VBAT2). The drain of PMOS transistor Q8 is electrically connected to the seventh electrical connection point 204 through resistor R11. The gate of PMOS transistor Q8 is electrically connected to the drain of NMOS transistor Q9. The gate of NMOS transistor Q9 is electrically connected to the second control circuit 23 (the gate of NMOS transistor Q9 has an EN pin, which is electrically connected to the EN pin of the second control circuit 23, which is not shown in the figure). The source of NMOS transistor Q9 is grounded. Resistor R12 is electrically connected between the source and gate of PMOS transistor Q8. Resistor R13 is electrically connected between the gate of NMOS transistor Q9 and the ground terminal. Capacitor C2 is electrically connected between the seventh electrical connection point 204 and the ground terminal.

[0116] Specifically, when the cartridge 10 is connected to the power supply 20, the EN pin of the second control circuit 23 outputs a drive level to the gate of the NMOS transistor Q9, satisfying the conduction condition of the NMOS transistor Q9. The NMOS transistor Q9 is turned on, thereby pulling down the gate voltage of the PMOS transistor Q8. The PMOS transistor Q8 is turned on, satisfying the conduction condition, and the current loop of the second battery cell 21, the PMOS transistor Q8, the resistor R11 and the capacitor C2 is selected.

[0117] It is understood that the first sampling circuit 251 and the resistance detection circuit 252 can operate alternately. For example, controlling the ADC1 pin and the EN pin of the second control circuit 23 to periodically output drive levels causes the first sampling circuit 251 and the resistance detection circuit 252 to operate alternately. Alternatively, controlling the duty cycle of the output drive levels of the ADC1 pin and the EN pin of the second control circuit 23 causes the first sampling circuit 251 and the resistance detection circuit 252 to operate alternately.

[0118] Based on the above embodiments, the power supply 20 further includes a drive circuit 26 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 with 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 driving circuit 26 includes a PMOS transistor Q10, an NMOS transistor Q11, resistors R14 and R15. The source of PMOS transistor Q10 is electrically connected to the second battery cell 21 (the source of PMOS transistor Q10 is used to receive the output voltage VBAT2), the drain of PMOS transistor Q10 is electrically connected to the seventh electrical connection point 204, the gate of PMOS transistor Q10 is electrically connected to the drain of NMOS transistor Q11, the gate of NMOS transistor Q11 is electrically connected to the second control circuit 23 (the gate of NMOS transistor Q11 has a PWM1 pin, which is electrically connected to the PWM1 pin of the second control circuit 23, which is not shown in the figure), the source of NMOS transistor Q11 is grounded, resistor R14 is electrically connected between the source and gate of PMOS transistor Q10, and resistor R15 is electrically connected between the gate of 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 this embodiment, 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 both the first heating element 11 and the second heating element 16 is adjustable, or the power of both the first heating element 11 and the second heating element 16 is 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, which is electrically connected to the second control circuit 23. The second sampling circuit 27 is configured to turn on or off according to the control of the second control circuit 23, and when it is on, it outputs a third sampling voltage from the second sampling node so that the second control circuit 23 can detect whether the current path between the second cell 21 and the first cell 12 is in a turned-off state based on the third sampling voltage.

[0123] Please refer to it again. Figure 6 The second sampling circuit 27 includes resistors R16 and R17 connected in series. One end of resistor R16 is electrically connected between the third PMOS transistor Q6 and the second electrical connection point 201. One end of 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 in the middle of the connection line between resistors R16 and R17. An ADC2 pin is led out from the second sampling node 27a and 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 selected. When the second sampling circuit 27 is selected, resistors R16 and R17 sample the voltage at the second electrical connection point 201, output a third sampling voltage from the ADC2 pin, and send it to the second control circuit 23. This allows the second control circuit 23 to detect whether the current path between the second battery cell 21 and the first battery cell 12 is in a turned-off state based on the third sampling voltage.

[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, and 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. 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 charging voltage to the power supply 20. After processing by the charging chip U2, the second battery cell 21 is charged. A voltage divider node is provided between the connection lines of resistors R19 and R20. This voltage divider node leads out to a USB pin, which is electrically connected to the USB pin of the second control circuit 23 (not shown in the figure), so that the second control circuit 23 can detect the magnitude of the charging voltage based on the voltage of this 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 e-cigarette cartridge 10, and increase the inhalation time of the e-cigarette cartridge 10 when inhaled alone.

[0127] It should be noted that while preferred embodiments of this application are provided in the specification and accompanying drawings, this application can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this application; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this application. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this application's specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An aerosol generation system, characterized in that, include: The cartridge includes 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 cartridge also includes a first electrical connection point that is respectively connected to the first heating element and the first switching circuit. A power supply that can be connected to or disconnected from the cartridge, the power supply comprising a second battery cell, a second switching circuit, and a second electrical connection point connected in sequence, and a second control circuit connected to the second switching circuit; When the cartridge and the power supply are separated, the first control circuit is configured to control the first switching circuit to operate in the on state, so that the first battery cell provides power to the first heating element. When the 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 is configured to control the second switching circuit to conduct so that the second battery cell provides power to the first heating element. The first control circuit is configured to control the first switching circuit to operate in the off state in response to the connection between the cartridge and the power supply, thereby cutting off the current path between the second battery cell and the first battery cell.

2. The aerosol generation system according to claim 1, characterized in that, The power supply also includes a signal transmission unit electrically connected to the second control circuit. The signal transmission unit is configured to establish a communication connection between the first control circuit and the second control circuit when the cartridge is connected to the power supply.

3. The aerosol generation system according to claim 2, characterized in that, The signal transmission unit includes: A first signal transmission circuit includes a third electrical connection point. When the cartridge is connected to the power supply, the first signal transmission circuit establishes an electrical connection with the first control circuit through the third electrical connection point and is configured to transmit 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 cartridge is connected to 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 inhalation signal generated by the airflow sensor of the cartridge between the first control circuit and the second control circuit.

4. The aerosol generation system according to claim 3, characterized in that, 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 generation system according to claim 3, characterized in that, The second signal transmission circuit also 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 generation system according to claim 1, characterized in that, The cartridge also includes an airflow sensor, which is electrically connected between the first heating element and the first switching circuit, and is also electrically connected to the first electrical connection point and the first control circuit respectively. When the cartridge is separated from the power supply, the airflow sensor is configured to send a suction signal to the first control circuit. When the cartridge is connected to 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 suction signal to the first control circuit so that the first control circuit forwards the suction signal to the second control circuit; or, when the cartridge is connected to the power supply, the airflow sensor establishes an electrical connection with the second control circuit, and the airflow sensor is configured to send the suction signal to the second control circuit.

7. The aerosol generation system according to any one of claims 1-6, characterized in that, The cartridge also includes a second heating element, which establishes an electrical connection with the power supply when the cartridge is connected to the power supply.

8. The aerosol generation system according to claim 7, characterized in that, The cartridge also includes a fifth electrical connection point and a sixth electrical connection point electrically connected to both ends of the second heating element, wherein the sixth electrical connection point is grounded; The power supply also includes a seventh electrical connection point and an eighth electrical connection point, wherein the eighth electrical connection point is grounded; When the cigarette cartridge is connected to 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 generation system according to claim 7, characterized in that, The second heating element and the first heating element share a grounding pin.

10. The aerosol generation system according to claim 8, characterized in that, 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. The second control circuit is configured to detect whether the cartridge and the power supply are connected by the detection circuit, and to detect the resistance of the second heating element when the cartridge and the power supply are connected.

11. The aerosol generation system according to claim 10, characterized in that, The detection circuit includes: A first sampling circuit is electrically connected between the seventh electrical connection point and the ground terminal. The first sampling circuit is provided with a first sampling node. The first sampling node is electrically connected to the second control circuit. The first sampling circuit is configured to output a first sampling voltage from the first sampling node so that the second control circuit can detect whether the cartridge and the power supply are in a connected state 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 also electrically connected to the second control circuit and the first sampling circuit. The resistance detection circuit is configured to output a second sampling voltage from the first sampling node through the first sampling circuit when the cartridge is connected to the power supply, so that the second control circuit can detect the resistance of the second heating element based on the second sampling voltage.

12. The aerosol generation system according to claim 8, characterized in that, 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. The second control circuit is configured to output a drive signal with 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 generation system according to claim 1, characterized in that, 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, and 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, which is electrically connected to the second control circuit. The second sampling circuit is configured to turn on or off according to the control of the second control circuit, and when it is on, it outputs a third sampling voltage from the second sampling node so that the second control circuit can detect whether the current path between the second cell and the first cell is in a turned-off state based on the third sampling voltage.

14. The aerosol generation system according to claim 1, characterized in that, The cartridge also includes a display circuit electrically connected between the first control circuit and the first battery cell, and the display circuit is configured to display cartridge data.

15. The aerosol generation system according to claim 1, characterized in that, The power supply also includes a charging circuit electrically connected to the second battery cell and the second control circuit, the charging circuit being configured to charge the second battery cell.

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