Aerosol generation apparatus

Abstract

An aerosol generation apparatus (1000). The aerosol generation apparatus (1000) comprises a heating body (400), a microphone controller (300), a power source (500), a boost circuit (100) and a switch circuit (200), wherein the heating body (400) heats an aerosol generation matrix to generate an aerosol; when an airflow change caused by a vaping action is detected, the microphone controller (300) outputs a first voltage; the power source (500) is electrically connected to the microphone controller (300), so as to supply power to the microphone controller (300); the boost circuit (100) is started on the basis of the first voltage, further boosts a voltage of the power source (500) and outputs a second voltage, and a power supply loop used for guiding a current for the heating body (400) is established between the boost circuit (100), the microphone controller (300) and the heating body (400); the switch circuit (200) is electrically connected to the microphone controller (300); and after the microphone controller (300) outputs the first voltage, the switch circuit (200) switches the power source (500) to the boost circuit (100), so as to supply power to the microphone controller (300) by means of the second voltage, and the switch circuit (200) turns on the power supply loop at the same time. The aerosol generation apparatus (1000) can improve the stability of power provided by a battery to the heating body (400).

Description

Aerosol generating device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on July 20, 2023, with application number 202310898269.5 and application name “Aerosol Generating Device,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of aerosol generating devices, and in particular to an aerosol generating device. Background Art

[0004] With the development and promotion of electronic atomization technology, aerosol-generating devices are becoming increasingly popular. The most important component in an aerosol-generating device is the heating element, which heats an aerosol-generating substrate, such as a liquid substrate, to produce an aerosol. In existing aerosol-generating devices, batteries typically directly power the heating element during the puffing process.

[0005] However, the power of the heating element will change with the change of battery power, which will lead to unstable power of the heating element. For example, as the puff progresses, the battery power will be consumed, and the output voltage of the battery will decay, resulting in a decrease in the power level output to the heating element. As a result, the aerosol level (TPM) generated by the aerosol generating device during the subsequent puff action will be significantly different from that of the previous puff action, thereby affecting the user's puffing experience.

[0006] Summary of the Invention

[0007] The embodiments of the present application aim to provide an aerosol generating device that can improve the stability of the power provided to the heating element during the user's inhalation process.

[0008] To achieve the above-mentioned objectives, in a first aspect, the present application provides an aerosol generating device comprising: a heating element, the heating element being used to heat an aerosol generating matrix to generate an aerosol; a microphone controller, the microphone controller being used to output a first voltage when an airflow change caused by a puffing action is detected; a power supply, electrically connected to the microphone controller to supply power to the microphone controller; a boost circuit, the boost circuit being electrically connected between the microphone controller and the power supply, the boost circuit being configured to start based on the first voltage to boost the voltage of the power supply and output a second voltage, and to establish a power supply loop for guiding current to the heating element between the boost circuit, the microphone controller and the heating element; a switching circuit, electrically connected to the microphone controller; wherein the switching circuit is configured to switch the power supply to the boost circuit to supply power to the microphone controller with the second voltage after the microphone controller outputs the first voltage, and to simultaneously turn on the power supply loop.

[0009] In one or more embodiments, the power supply directly supplies power to the microphone controller when the microphone controller does not output the first voltage.

[0010] In one or more embodiments, the switch circuit is further configured to cut off direct power supply from the power supply to the microphone controller after the microphone controller outputs the first voltage.

[0011] In one or more embodiments, the switch circuit includes a delay control branch, which is used to turn on the power supply circuit after a first delay of a first time period starting from when the microphone controller outputs the first voltage.

[0012] In one or more embodiments, the delay control branch includes: a first energy storage sub-branch, the first energy storage sub-branch is electrically connected to the microphone controller, and the first energy storage sub-branch is used to charge and discharge based on a first voltage; a first switch sub-branch, the first switch sub-branch is electrically connected to the first energy storage sub-branch and the heating element respectively, and the first switch sub-branch turns on or off the power supply circuit based on the voltage change during the charging and discharging process of the first energy storage sub-branch.

[0013] In one or more embodiments, the first energy storage sub-branch includes a first resistor and a first capacitor; the first end of the first resistor is electrically connected to the microphone controller, the second end of the first resistor is electrically connected to the first switch sub-branch and the first end of the first capacitor respectively, and the second end of the first capacitor is grounded.

[0014] In one or more embodiments, the first switch sub-branch includes a first switch tube; the first end of the first switch tube is electrically connected to the first energy storage sub-branch, the second end of the first switch tube is grounded, the third end of the first switch tube is electrically connected to the negative pole of the heating element, and the positive pole of the heating element is electrically connected to the microphone controller.

[0015] In one or more embodiments, the first switch sub-branch includes a second resistor, a second switch tube and a third switch tube; the first end of the second switch tube is electrically connected to the first energy storage sub-branch, the second end of the second switch tube is grounded, the third end of the second switch tube is electrically connected to the first end of the second resistor and the first end of the third switch tube respectively, the second end of the third switch tube is electrically connected to the second end of the second resistor and the microphone controller respectively, the third end of the third switch tube is electrically connected to the positive pole of the heating element, and the negative pole of the heating element is grounded.

[0016] In one or more embodiments, the switching circuit includes a second energy storage sub-branch and a second switch sub-branch; the second energy storage sub-branch is electrically connected to the boost circuit and the second switch sub-branch, respectively, and the second switch sub-branch is electrically connected between the power supply and the microphone controller; the second energy storage sub-branch is used to charge and discharge based on changes in the second voltage; the second switch sub-branch is used to turn on or off the electrical connection between the power supply and the microphone controller based on voltage changes during the charging and discharging process of the second energy storage sub-branch.

[0017] In one or more embodiments, the second energy storage sub-branch includes a third resistor, a second capacitor and a first diode; the first end of the third resistor is electrically connected to the boost circuit and the second switch sub-branch, respectively, the second end of the third resistor is electrically connected to the first end of the second capacitor, the anode of the first diode and the second switch sub-branch, respectively, the second end of the second capacitor is grounded, and the cathode of the first diode is electrically connected to the boost circuit.

[0018] In one or more embodiments, the second switch sub-branch includes a fourth switch tube, a fifth switch tube and a fourth resistor; the first end of the fourth resistor is electrically connected to the second end of the fourth switch tube and the boost circuit respectively, the second end of the fourth resistor is electrically connected to the first end of the fourth switch tube and the third end of the fifth switch tube respectively, the third end of the fourth switch tube is electrically connected to the power supply, the first end of the fifth switch tube is electrically connected to the second energy storage sub-branch, and the second end of the fifth switch tube is grounded; or, the first end of the fifth switch tube is electrically connected to the second energy storage sub-branch, the second end of the fifth switch tube is electrically connected to the second end of the fourth switch tube and the boost circuit respectively, the third end of the fifth switch tube is electrically connected to the first end of the fourth switch tube and the first end of the fourth resistor respectively, the third end of the fourth switch tube is electrically connected to the power supply, and the second end of the fourth resistor is grounded.

[0019] In one or more embodiments, the aerosol generating device further includes a boost enabling circuit; the boost enabling circuit is electrically connected to the microphone controller and the boost circuit respectively, and the boost enabling circuit is configured to output an enabling signal to the boost circuit based on the first voltage to enable the boost circuit to operate.

[0020] In one or more embodiments, the aerosol generating device further includes a feedback control circuit; the feedback control circuit is electrically connected to the boost enabling circuit and the boost circuit, and the feedback control circuit is configured to output a feedback signal to the boost circuit based on the first voltage.

[0021] In one or more embodiments, the boost enabling circuit includes a second diode and a third capacitor; the anode of the second diode is electrically connected to the microphone controller and the positive electrode of the heating element, respectively, the cathode of the second diode is electrically connected to the first end of the third capacitor and the boost circuit, respectively, and the second end of the third capacitor is grounded.

[0022] In one or more embodiments, the feedback control circuit includes a sixth switch tube; the first end of the sixth switch tube is electrically connected to the first end of the boost enabling circuit, the second end of the sixth switch tube is grounded, and the third end of the sixth switch tube is electrically connected to the boost circuit.

[0023] The beneficial effects of the present application are as follows: the aerosol generating device provided by the present application includes a heating element, a boost circuit, a switching circuit, and a microphone controller. The microphone controller is electrically connected to the boost circuit, the switching circuit, the heating element, and the power supply, respectively, and the boost circuit is electrically connected between the microphone controller and the power supply. When the microphone controller detects a change in airflow caused by a puffing action, the microphone controller outputs a first voltage, and then the boost circuit responds and starts, and the boost circuit boosts the voltage of the power supply to a second voltage and outputs it. Afterwards, the switching circuit turns on the power supply circuit that provides current to the heating element through the boost circuit. Through the above process, it is achieved that the power supply directly powers the microphone controller, while the boost circuit powers the microphone controller. In this case, even if the power of the power supply gradually decreases, the boost circuit can still provide stable operating power to the heating element, thereby improving the stability of the power provided to the heating element during the user's puffing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0025] FIG1 is a schematic structural diagram of an aerosol generating device provided in one embodiment of the present application;

[0026] FIG2 is a schematic structural diagram of a circuit portion of an aerosol generating device provided in one embodiment of the present application;

[0027] FIG3 is a schematic structural diagram of a circuit portion of an aerosol generating device provided in another embodiment of the present application;

[0028] FIG4 is a schematic diagram of a circuit structure corresponding to the structure shown in FIG3 provided in one embodiment of the present application;

[0029] FIG5 is a schematic diagram of a circuit structure corresponding to the structure shown in FIG3 provided in another embodiment of the present application;

[0030] FIG6 is a schematic structural diagram of a circuit portion of an aerosol generating device provided in yet another embodiment of the present application;

[0031] FIG7 is a schematic diagram of a circuit structure corresponding to the structure shown in FIG6 provided in an embodiment of the present application;

[0032] FIG8 is a schematic diagram of a circuit structure corresponding to the structure shown in FIG6 provided in another embodiment of the present application;

[0033] FIG9 is a schematic structural diagram of a circuit portion of an aerosol generating device provided in yet another embodiment of the present application;

[0034] FIG10 is a schematic structural diagram of a circuit portion of an aerosol generating device provided in yet another embodiment of the present application;

[0035] FIG11 is a schematic diagram of a circuit structure corresponding to the structure shown in FIG10 provided in one embodiment of the present application;

[0036] FIG12 is a schematic diagram of a circuit structure corresponding to the structure shown in FIG10 provided in another embodiment of the present application;

[0037] FIG13 is a schematic structural diagram of a circuit portion of an aerosol generating device provided in yet another embodiment of the present application;

[0038] FIG14 is a schematic structural diagram of a circuit portion of an aerosol generating device provided in yet another embodiment of the present application;

[0039] FIG15 is a schematic diagram of a circuit structure corresponding to the structure shown in FIG14 provided in one embodiment of the present application;

[0040] FIG16 is a schematic diagram of a circuit structure corresponding to the structure shown in FIG14 provided in another embodiment of the present application. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] Please refer to Figure 1, which is a schematic diagram of the structure of an aerosol generating device provided in an embodiment of the present application. As shown in Figure 1, the aerosol generating device 1000 includes an atomizer 1001 that stores a liquid matrix and atomizes it to generate an aerosol, and a power supply mechanism 1002 that supplies power to the atomizer 1001.

[0043] The atomizer 1001 includes a liquid storage chamber for storing a liquid matrix, and an atomizing assembly for drawing the liquid matrix from the liquid storage chamber and heating and atomizing the liquid matrix. The atomizing assembly typically includes a liquid-conducting element for drawing the liquid matrix, and a heating element 400 coupled to the liquid-conducting element. The heating element 400 heats at least a portion of the liquid matrix in the liquid-conducting element to generate an aerosol when powered. In an optional embodiment, the liquid-conducting element includes flexible fibers, such as cotton fibers, non-woven fabrics, fiberglass ropes, etc., or includes a porous material with a microporous structure, such as porous ceramics; the heating element can be coupled to the liquid-conducting element by printing, deposition, sintering, or physical assembly, or can be wound around the liquid-conducting element. In some optional embodiments, the heating element 400 can be a resistive heating mesh, a resistive heating coil, etc. In other embodiments, the heating element 400 can also be a heating element wound around a sheet or mesh substrate.

[0044] The power supply mechanism 1002 includes a receiving cavity 1003 disposed at one end along its length for receiving and accommodating at least a portion of the atomizer 1001, and a first electrical contact 601 at least partially exposed within the receiving cavity 1003. The power supply mechanism 1002 is configured to establish an electrical connection with the atomizer 1001 when at least a portion of the atomizer 1001 is received and accommodated within the power supply mechanism 1002, thereby providing power to the atomizer 1001.

[0045] A second electrical contact 401 is provided at the end of the atomizer 1001 opposite to the power supply mechanism 1002 along the length direction. When at least a portion of the atomizer 1001 is received in the receiving cavity 1003, the second electrical contact 401 contacts and abuts against the first electrical contact 601 to form electrical conduction.

[0046] A sealing member 600 is disposed within the power supply mechanism 1002, and the sealing member 600 partitions at least a portion of the internal space of the power supply mechanism 1002 to form the receiving chamber 1003. In this embodiment, the sealing member 600 is configured to extend perpendicularly to the longitudinal direction of the power supply mechanism 1002 and is preferably made of a flexible material such as silicone. This prevents the liquid matrix that seeps from the atomizer 1001 into the receiving chamber 1003 from flowing toward components such as the microphone controller 300 within the power supply mechanism 1002.

[0047] The power supply mechanism 1002 further includes a power supply 500 at the other end of the receiving cavity 1003 along the longitudinal direction. The power supply 500 can be a power source for providing power to the heating element 400, such as a lithium-ion battery, a nickel battery, an alkaline battery, and / or other batteries. When needed, the power supply 500 can provide electrical energy to the heating element 400.

[0048] The power supply mechanism 1002 further includes a microphone controller 300 disposed between the power supply 500 and the receiving chamber 1003. The microphone controller 300 is operable to direct current between the power supply 500 and the first electrical contact 601. In use, the microphone controller 300 is used to sense the airflow generated by the atomizer 100 during inhalation, thereby controlling the power supply 500 to supply power to the atomizer 1001.

[0049] In this embodiment, the power supply mechanism 1002 is provided with a charging interface 700 at the other end away from the receiving cavity 1003 , and the charging interface 700 is used to charge the power supply 500 .

[0050] It should be noted that the hardware structure of the aerosol generating device 1000 shown in FIG1 is merely an example, and the aerosol generating device 1000 may have more or fewer components than shown in the figure, may combine two or more components, or may have a different component configuration.

[0051] Furthermore, the aerosol generating device 1000 shown in FIG1 can be applied to a variety of different occasions and play different roles, and the embodiments of the present application do not impose specific limitations on this. For example, in one embodiment, the aerosol generating device 1000 can be applied to the medical field. In this case, the aerosol generating device 1000 can be a medical nebulizer, which can achieve the effect of auxiliary treatment by atomizing the liquid medicine added thereto and allowing the patient to inhale it. For example, in another embodiment, the aerosol generating device 1000 can also be used as an electronic product, such as an electronic cigarette, which is an electronic product that converts nicotine solution into aerosol through atomization and other means for the user to inhale.

[0052] Please refer to Figure 2, which is a schematic diagram of the circuit structure of the aerosol generating device provided in an embodiment of the present application. As shown in Figure 2, the aerosol generating device 1000 also includes a boost circuit 100, a switch circuit 200, and a microphone controller 300. The microphone controller 300 is electrically connected to the boost circuit 100, the switch circuit 200, the heating element 400, and the power supply 500, respectively. The boost circuit 200 is electrically connected between the microphone controller 300 and the power supply 500. The microphone controller 300 is a sensor for detecting and measuring air flow.

[0053] Specifically, the microphone controller 300 is configured to output a first voltage upon detecting airflow changes caused by a puff. The power supply 500 is configured to power the microphone controller 300. The boost circuit 100 is configured to activate based on the first voltage, thereby boosting the voltage of the power supply 500 and outputting a second voltage. A power supply loop is established between the boost circuit 100, the microphone controller 300, and the heating element 400 to direct current to the heating element 400. The switching circuit 200 is configured to switch the power supply 500 to the boost circuit after the microphone controller 300 outputs the first voltage, thereby supplying power to the microphone controller 300 at the second voltage and simultaneously opening the power supply loop.

[0054] In this embodiment, when the microphone controller 300 does not detect the airflow change caused by the suction action, the microphone controller 300 does not output the first voltage, and the boost circuit 100 and the switch circuit 200 both maintain their current states.

[0055] When the microphone controller 300 detects changes in airflow caused by the puffing action, it outputs a first voltage. Subsequently, the boost circuit 100 is activated. The boost circuit 100 boosts the voltage of the power supply 500 to a second voltage and outputs it. Subsequently, the switching circuit 200 conducts a power supply circuit that provides current to the heating element 400 through the boost circuit 100. This power supply circuit includes at least the boost circuit 100, the microphone controller 300, and the heating element 400. This switches the power supply 500 from directly supplying power to the microphone controller 300 to the boost circuit 100. In this case, even if the power level of the power supply 500 gradually decreases, the boost circuit 100 can still provide stable operating power to the heating element 400, thereby improving the stability of the power supplied to the heating element during the user's puffing process and thus enhancing the user's puffing experience.

[0056] In one embodiment, the power supply 500 directly supplies power to the microphone controller 300 when the microphone controller 300 does not output the first voltage, so that the microphone controller 300 keeps running and keeps detecting the airflow.

[0057] In one embodiment, the switch circuit 200 is further configured to cut off the direct power supply from the power supply 500 to the microphone controller 300 after the microphone controller 300 outputs the first voltage.

[0058] Specifically, after the microphone controller 300 outputs the first voltage, the switch circuit 200 not only controls the boost circuit 100 to supply power to the microphone controller 300, but also controls the power supply 500 to stop directly supplying power to the microphone controller 300. In short, after the microphone controller 300 outputs the first voltage, there is only one circuit for supplying power to the microphone controller 300, which is the circuit in which the power supply 500 supplies power to the microphone controller 300 via the boost circuit 100.

[0059] In one embodiment, as shown in FIG3 , the switch circuit 200 includes a second energy storage sub-branch 201 and a second switch sub-branch 202. The second energy storage sub-branch 201 is electrically connected to the boost circuit 100 and the second switch sub-branch 202, respectively. The second switch sub-branch 202 is electrically connected between the power supply 500 and the microphone controller 300.

[0060] Specifically, the second energy storage sub-branch 201 is used to charge and discharge based on the change of the second voltage. The second switch sub-branch 202 is used to conduct or cut off the electrical connection between the power supply 500 and the microphone controller 300 based on the voltage change during the charging and discharging process of the second energy storage sub-branch 201.

[0061] In this embodiment, after the boost circuit 100 is activated, the voltage output by the boost circuit 100 gradually increases. Before the voltage output by the boost circuit 100 reaches a stable second voltage, the power supply 500 charges the second energy storage sub-branch 201. When the voltage of the second energy storage sub-branch 201 is charged to a level greater than the conduction voltage drop of the second switch sub-branch 202, the second switch sub-branch 202 is turned on. The electrical connection between the power supply 500 and the microphone controller 300 is established. The power supply 500 supplies power to the microphone controller 300 to maintain stable operation of the microphone controller 300.

[0062] When the voltage output by the boost circuit 100 increases to a stable second voltage, the second energy storage sub-branch 201 discharges through the boost circuit 100. When the second energy storage sub-branch 201 discharges to a voltage less than or equal to the conduction voltage drop of the second switch sub-branch 202, the second switch sub-branch 202 is turned off. The electrical connection between the power supply 500 and the microphone controller 300 is severed. The power supply 500 stops directly powering the microphone controller 300 and switches to powering the microphone controller 300 with the second voltage output by the boost circuit 100, providing stable operating power to the microphone controller 300.

[0063] Furthermore, in this embodiment, the second energy storage sub-branch 201 and the second switch sub-branch 202 are configured to form a switching circuit, so that the second energy storage sub-branch 201 receives the enable signal from the microphone controller 300, and the characteristics of the components in the second switch sub-branch 202 (e.g., threshold voltage or threshold voltage) determine whether the circuit is turned on or off, thereby switching the power supply source of the microphone controller 300. Compared with the related art solution of adding a logic controller / chip to control the switch tube to switch the power supply source, this solution has a significant cost advantage.

[0064] Please refer to Figure 4, which exemplarily shows a circuit structure of the second energy storage sub-branch 201. As shown in Figure 4, the second energy storage sub-branch 201 includes a third resistor R3, a second capacitor C2, and a first diode D1.

[0065] Among them, the first end of the third resistor R3 is electrically connected to the boost circuit 100 and the second switch sub-branch 202 respectively, the second end of the third resistor R3 is electrically connected to the first end of the second capacitor C2, the anode of the first diode D1 and the second switch sub-branch 202 respectively, the second end of the second capacitor C2 is grounded GND, and the cathode of the first diode D1 is electrically connected to the boost circuit 100.

[0066] Specifically, the third resistor R3 is used for current limiting. The second capacitor C2 is used for charging and discharging. The first diode D1 is used to prevent current from flowing back from the boost circuit 100 to the second energy storage sub-branch 201 and the second switch sub-branch 202, thereby protecting the second energy storage sub-branch 201 and the second switch sub-branch 202.

[0067] Fig. 4 also exemplarily shows a circuit structure of the second switch sub-branch 202. As shown in Fig. 4, the second switch sub-branch 202 includes a fourth switch transistor Q4, a fifth switch transistor Q5, and a fourth resistor R4.

[0068] Among them, the first end of the fourth resistor R4 is electrically connected to the second end of the fourth switch tube Q4 and the boost circuit 100 respectively, the second end of the fourth resistor R4 is electrically connected to the first end of the fourth switch tube Q4 and the third end of the fifth switch tube Q5 respectively, the third end of the fourth switch tube Q4 is electrically connected to the power supply 500, the first end of the fifth switch tube Q5 is electrically connected to the second energy storage sub-branch 201, and the second end of the fifth switch tube Q5 is grounded.

[0069] In this embodiment, the fifth switch transistor Q5 is an NMOS transistor, and the fourth switch transistor Q4 is a PMOS transistor. For example, the gate of the NMOS transistor is the first terminal of the fifth switch transistor Q5, the source of the NMOS transistor is the second terminal of the fifth switch transistor Q5, and the drain of the NMOS transistor is the third terminal of the fifth switch transistor Q5. The gate of the PMOS transistor is the first terminal of the fourth switch transistor Q4, the source of the PMOS transistor is the second terminal of the fourth switch transistor Q4, and the drain of the PMOS transistor is the third terminal of the fourth switch transistor Q4.

[0070] In addition, the fourth switch tube Q4 and the fifth switch tube Q5 can be any controllable switches, such as insulated gate bipolar transistor (IGBT) devices, integrated gate-commutated thyristor (IGCT) devices, gate turn-off thyristor (GTO) devices, silicon-controlled rectifier (SCR) devices, junction-gate field-effect transistor (JFET) devices, MOS-controlled thyristor (MCT) devices, etc.

[0071] The principle of the circuit structure shown in FIG. 4 is described again below.

[0072] After the microphone controller 300 outputs a first voltage to activate the boost circuit 100, the voltage output by the boost circuit 100 gradually increases. Before the voltage output by the boost circuit 100 reaches a stable second voltage, the power supply 500 charges the second capacitor C2 via the body diode of the fourth switch Q4 and the third resistor R3. When the second capacitor C2 is charged to a voltage greater than the conduction voltage drop of the fifth switch Q5, the fifth switch Q5 turns on. The gate of the fourth switch Q4 is grounded, and the fourth switch Q4 also turns on. The fourth switch Q4 establishes an electrical connection between the power supply 500 and the microphone controller 300. The power supply 500 supplies power to the microphone controller 300 via the fourth switch Q4 to maintain stable operation of the microphone controller 300.

[0073] When the voltage output by the boost circuit 100 increases to a stable second voltage, the voltage of the second capacitor C2 is discharged to the boost circuit 100 through the first diode D1. When the second capacitor C2 discharges to a voltage less than or equal to the conduction voltage drop of the fifth switch Q5, the fifth switch Q5 is turned off, and the fourth switch Q4 is also turned off. Subsequently, the electrical connection between the power supply 500 and the microphone controller 300 is severed. The power supply 500 stops directly powering the microphone controller 300 and switches to powering the microphone controller 300 with the second voltage output by the boost circuit 100, providing stable operating power to the microphone controller 300.

[0074] It should be noted that the hardware structure of the second energy storage sub-branch 201 and the second switch sub-branch 202 shown in Figure 4 is only an example, and the second energy storage sub-branch 201 and the second switch sub-branch 202 may have more or fewer components than shown in the figure, may be combined with two or more components, or may have different component configurations. The various components shown in the figure can be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and / or application-specific integrated circuits.

[0075] For example, as shown in Figure 5, Figure 5 exemplarily shows another circuit structure of the second switch sub-branch 202. The second switch sub-branch 202 still includes a fourth switch tube Q4, a fifth switch tube Q5 and a fourth resistor R4.

[0076] Specifically, a first end of the fifth switch tube Q4 is electrically connected to the second energy storage sub-branch 201, a second end of the fifth switch tube Q5 is electrically connected to the second end of the fourth switch tube Q4 and the boost circuit 100, a third end of the fifth switch tube Q5 is electrically connected to the first end of the fourth switch tube Q4 and the first end of the fourth resistor R4, a third end of the fourth switch tube Q4 is electrically connected to the power supply 500, and a second end of the fourth resistor R4 is grounded GND.

[0077] In this embodiment, the fourth switch transistor Q4 and the fifth switch transistor Q5 are both PMOS transistors. The gate of the PMOS transistor is the first terminal of the fourth switch transistor Q4 (fifth switch transistor Q5), the source of the PMOS transistor is the second terminal of the fourth switch transistor Q4 (fifth switch transistor Q5), and the drain of the PMOS transistor is the third terminal of the fourth switch transistor Q4 (fifth switch transistor Q5).

[0078] In this embodiment, after the microphone controller 300 outputs a first voltage to activate the boost circuit 100, the voltage output by the boost circuit 100 gradually increases. Before the voltage output by the boost circuit 100 increases to a stable second voltage, the power supply 500 charges the second capacitor C2 via the body diode of the fourth switch Q4 and the third resistor R3. When the second capacitor C2 is charged to a voltage greater than the cutoff voltage drop of the fifth switch Q5, the fifth switch Q5 is turned off. The gate of the fourth switch Q4 is connected to ground GND, turning on the fourth switch Q4. The fourth switch Q4 establishes an electrical connection between the power supply 500 and the microphone controller 300. In summary, before the voltage output by the boost circuit 100 increases to a stable second voltage, for example, within 10 ms after the boost circuit 100 begins outputting voltage, turning on the fourth switch Q4 allows the power supply 500 to directly power the microphone controller 300. This allows the heating element 400 to start operating promptly and without hysteresis, thus ensuring a superior puffing experience for the user.

[0079] Then, when the voltage output by the boost circuit 100 increases to a stable second voltage, the voltage of the second capacitor C2 is discharged to the boost circuit 100 through the first diode D1. When the second capacitor C2 discharges to a voltage less than or equal to the cutoff voltage drop of the fifth switch Q5, the fifth switch Q5 turns on. The gate of the fourth switch Q4 is pulled high by the second voltage, turning off the fourth switch Q4. Subsequently, the electrical connection between the power supply 500 and the microphone controller 300 is severed. The power supply 500 stops directly powering the microphone controller 300 and switches to powering the microphone controller 300 with the second voltage output by the boost circuit 100, providing stable operating power to the microphone controller 300.

[0080] In another embodiment, as shown in FIG6 , the aerosol generating device 1000 further includes a boost enabling circuit 800 , wherein the boost enabling circuit 800 is electrically connected to the microphone controller 300 and the boost circuit 100 , respectively.

[0081] Specifically, after the microphone controller 300 outputs the first voltage, the boost enabling circuit 800 can output an enabling signal to the boost circuit 100 based on the first voltage to enable the boost circuit 100 to operate. Thus, the operation and stop of the boost circuit 100 are controlled.

[0082] In one embodiment, referring to FIG6 , the aerosol generating device 1000 further includes a feedback control circuit 900 , wherein the feedback control circuit 900 is electrically connected to the boost enabling circuit 800 and the boost circuit 100 .

[0083] Specifically, the feedback control circuit 900 is configured to output a feedback signal to the boost circuit 100 based on the first voltage. Subsequently, the boost circuit 100 can determine that the microphone controller 300 has output the first voltage. Furthermore, in another embodiment, when the microphone controller 300 is not outputting the first voltage, the feedback control circuit 900 stops outputting the feedback signal to the boost circuit 100. This achieves the purpose of stopping the feedback control circuit 900 when the microphone controller 300 is not outputting the first voltage, thereby saving power.

[0084] Please refer to Fig. 7, which exemplarily shows a circuit structure of a boost enabling circuit 800. As shown in Fig. 7, the boost enabling circuit 800 includes a second diode D2 and a third capacitor C3.

[0085] The anode of the second diode D2 is electrically connected to the positive electrodes of the microphone controller 300 and the heating element 400 respectively, the cathode of the second diode D2 is electrically connected to the first end of the third capacitor C3 and the boost circuit 100 respectively, and the second end of the third capacitor C3 is grounded GND.

[0086] Specifically, the second diode D2 and the third capacitor C3 are used for filtering. When the microphone controller 300 outputs the first voltage, the first voltage is filtered by the second diode D2 and the third capacitor C3 and then input to the boost circuit 100 to start the boost circuit 100.

[0087] Fig. 7 also exemplarily shows a circuit structure of the feedback control circuit 900. As shown in Fig. 7, the feedback control circuit 900 includes a sixth switch tube Q6.

[0088] The first end of the sixth switch tube Q6 is electrically connected to the first end of the boost enabling circuit 800 , the second end of the sixth switch tube Q6 is grounded GND, and the third end of the sixth switch tube Q6 is electrically connected to the boost circuit 100 .

[0089] Specifically, when the microphone controller 300 outputs a first voltage, the first voltage is filtered by the second diode D2 and the third capacitor C3 before being input to the gate of the sixth switch Q6, thereby turning on the sixth switch Q6. The source of the sixth switch Q6 outputs an enable signal (a low-level signal in this embodiment) to the boost circuit 100.

[0090] In this embodiment, the sixth switch transistor Q6 is an NMOS transistor, for example, wherein the gate of the NMOS transistor is the first terminal of the sixth switch transistor Q6 , the source of the NMOS transistor is the second terminal of the sixth switch transistor Q6 , and the drain of the NMOS transistor is the third terminal of the sixth switch transistor Q6 .

[0091] In addition, the sixth switch tube Q6 can be any controllable switch, such as an insulated gate bipolar transistor (IGBT) device, an integrated gate-commutated thyristor (IGCT) device, a gate-turn-off thyristor (GTO) device, a silicon-controlled rectifier (SCR) device, a junction-gate field-effect transistor (JFET) device, a MOS-controlled thyristor (MCT) device, etc.

[0092] It is understood that the circuit structure shown in FIG7 is based on the circuit structure shown in FIG4 with the addition of a boost enabling circuit 800 and a feedback control circuit 900. The circuit structure shown in FIG5 can also be supplemented with a boost enabling circuit 800 and a feedback control circuit 900, as shown in FIG8. The principle of the circuit structure shown in FIG8 can be referred to the description of FIG7 and will not be repeated here.

[0093] In addition, it should be noted that in the embodiments shown in Figures 3 to 8, the switch circuit 200 is set between the power supply and the microphone controller 200. In other embodiments, the switch circuit 200 can also be set between the heating element 400 and the microphone controller 300.

[0094] In one embodiment, as shown in FIG. 9 , when the switch circuit 200 is disposed between the positive electrode of the heating element 400 and the microphone controller 300 , the switch circuit 200 includes a delay control branch 203 .

[0095] The delay control branch 203 is configured to turn on the power supply circuit after a first delay of a first duration, starting from the output of the first voltage by the microphone controller 300. This first duration is determined by the characteristics of the delay control branch 203 and can be set according to actual application scenarios. This embodiment of the present application does not impose any specific limitations on this. Furthermore, by properly configuring the first duration, it helps reduce the user experience of excessive aerosol lag after inhalation is initiated from the aerosol generating device 1000.

[0096] Specifically, after the microphone controller 300 outputs the first voltage, the boost circuit 100 is activated. Furthermore, the module powering the microphone controller 300 switches from the power supply 500 to the boost circuit 100. At this point, by setting a first delay, the voltage output by the boost circuit 100 gradually increases to a stable second voltage. The power supply circuit is then turned on to provide a stable voltage, and therefore stable operating power, to the heating element 400.

[0097] In one embodiment, as shown in FIG9 , the delay control branch 203 includes a first energy storage sub-branch 2031 and a first switch sub-branch 2032. The first energy storage sub-branch 2032 is electrically connected to the microphone controller 300. The first switch sub-branch 2031 is electrically connected to the first energy storage sub-branch 2032 and the heating element 400.

[0098] Specifically, the first energy storage sub-branch 2032 is configured to charge and discharge based on a first voltage. The first switch sub-branch 2031 switches on or off the power supply circuit based on voltage changes during the charging and discharging process of the first energy storage sub-branch 2032.

[0099] In this embodiment, after the microphone controller 300 outputs the first voltage, the first voltage charges the first energy storage sub-branch 2032. Before the first energy storage sub-branch 2032 is charged to a voltage greater than the conduction voltage drop of the first switch sub-branch 2031, the first switch sub-branch 2031 remains disconnected.

[0100] When the first energy storage sub-branch 2032 is charged to a voltage greater than the conduction voltage drop of the first switch sub-branch 2031, the first switch sub-branch 2031 is turned on. The electrical connection between the microphone controller 300 and the heating element 400 is established. The microphone controller 300 supplies power to the heating element 400, providing stable operating power.

[0101] Please refer to Figure 11, which exemplarily shows a circuit structure of the first energy storage sub-branch 2032. As shown in Figure 11, the first energy storage sub-branch 2032 includes a first resistor R1 and a first capacitor C1.

[0102] The first end of the first resistor R1 is electrically connected to the microphone controller 300 , the second end of the first resistor R1 is electrically connected to the first switch sub-branch 2031 and the first end of the first capacitor C1 respectively, and the second end of the first capacitor C1 is grounded GND.

[0103] Specifically, the first resistor R1 is used for current limiting, and the first capacitor C1 is used for charging and discharging.

[0104] Fig. 11 also exemplarily shows a circuit structure of the first switch sub-branch 2031. As shown in Fig. 11, the first switch sub-branch 2031 includes a second resistor R2, a second switch transistor Q2, and a third switch transistor Q3.

[0105] Among them, the first end of the second switch tube Q2 is electrically connected to the first energy storage sub-branch 2032, the second end of the second switch tube Q2 is grounded GND, the third end of the second switch tube Q2 is electrically connected to the first end of the second resistor R2 and the first end of the third switch tube Q3 respectively, the second end of the third switch tube Q3 is electrically connected to the second end of the second resistor R2 and the microphone controller 300 respectively, the third end of the third switch tube Q3 is electrically connected to the positive pole of the heating element 400, and the negative pole of the heating element 400 is grounded GND.

[0106] In this embodiment, the second switch transistor Q2 is an NMOS transistor, and the third switch transistor Q3 is a PMOS transistor. The gate of the NMOS transistor is the first terminal of the second switch transistor Q2, the source of the NMOS transistor is the second terminal of the second switch transistor Q2, and the drain of the NMOS transistor is the third terminal of the second switch transistor Q2. The gate of the PMOS transistor is the first terminal of the third switch transistor Q3, the source of the PMOS transistor is the second terminal of the third switch transistor Q3, and the drain of the PMOS transistor is the third terminal of the third switch transistor Q3.

[0107] In addition, the second switch tube Q2 and the third switch tube Q3 can be any controllable switches, such as insulated gate bipolar transistor (IGBT) devices, integrated gate-commutated thyristor (IGCT) devices, gate turn-off thyristor (GTO) devices, silicon-controlled rectifier (SCR) devices, junction-gate field-effect transistor (JFET) devices, MOS-controlled thyristor (MCT) devices, etc.

[0108] The principle of the circuit structure shown in FIG. 11 will be described again below.

[0109] After the microphone controller 300 outputs the first voltage, the first voltage charges the first capacitor C1 through the first resistor R1. Before the first capacitor C1 is charged to a voltage greater than the conduction voltage drop of the second switch tube Q2, the second switch tube Q2 remains off. The third switch tube Q3 also remains off. The microphone controller 300 does not supply power to the heating element 400 at this time, that is, the power supply circuit that guides the current to the heating element 400 is in the cut-off state. Among them, the first duration in the above embodiment is determined by the parameters of the first resistor R1 and the first capacitor C1. In some embodiments, by configuring the parameters of the first resistor R1 and the first capacitor C1, the first duration can be set to any value between 10ms and 100ms, so that the user does not have an unpleasant experience caused by overly obvious aerosol hysteresis.

[0110] When the first capacitor C1 is charged to a voltage greater than the conduction voltage drop of the second switch Q2, the second switch Q2 turns on. The gate of the third switch Q3 is grounded, forcibly pulled low, and the third switch Q3 turns on. The microphone controller 300 is electrically connected to the heating element 400 via the third switch Q3. At this point, the power supply circuit directing current to the heating element 400 is turned on, providing stable operating power to the heating element 400.

[0111] It is understood that the boost enabling circuit 800 and feedback control circuit 900 shown in Figures 6-8 can also be applied to the structures shown in Figures 9-11. For example, Figure 12 illustrates a circuit structure in which the boost enabling circuit 800 and feedback control circuit 900 are applied to the structure shown in Figure 11. The specific implementation process of the circuit principle can be referred to the description of Figures 7-8 and will not be repeated here.

[0112] In other embodiments, the switch circuit 200 may also be electrically connected to the negative electrode of the heating element 400. In this case, as shown in FIG13 , the switch circuit 200 may also include a delay control branch 203. Furthermore, the operating principle of the delay control branch 203 shown in FIG13 is the same as that of the delay control branch 203 shown in FIG9 , and will not be further described here.

[0113] Furthermore, the delay control branch 203 shown in FIG13 may also include a first switch sub-branch 2031 and a first energy storage sub-branch 2032. The specific circuit structure is shown in FIG14. Furthermore, the operating principles of the first switch sub-branch 2031 and the first energy storage sub-branch 2032 shown in FIG14 are the same as those described in FIG10 and are not further described here.

[0114] Please refer to Figure 15, which exemplarily shows a circuit structure corresponding to the structure shown in Figure 14. As shown in Figure 15, the first switch sub-branch 2031 includes a first switch tube Q1.

[0115] Among them, the first end of the first switch tube Q1 is electrically connected to the first energy storage sub-branch 2032, the second end of the first switch tube Q1 is grounded GND, the third end of the first switch tube Q1 is electrically connected to the negative pole of the heating element 400, and the positive pole of the heating element 400 is electrically connected to the microphone controller 300.

[0116] In this embodiment, the first switch transistor Q1 is an NMOS transistor, for example, the gate of the NMOS transistor is the first end of the first switch transistor Q1, the source of the NMOS transistor is the second end of the first switch transistor Q1, and the drain of the NMOS transistor is the third end of the first switch transistor Q1.

[0117] In addition, the first switch tube Q1 can be any controllable switch, such as an insulated gate bipolar transistor (IGBT) device, an integrated gate-commutated thyristor (IGCT) device, a gate-turn-off thyristor (GTO) device, a silicon-controlled rectifier (SCR) device, a junction-gate field-effect transistor (JFET) device, a MOS-controlled thyristor (MCT) device, etc.

[0118] In this embodiment, after the microphone controller 300 outputs a first voltage, the first voltage charges the first capacitor C1 through the first resistor R1. The first switch Q1 remains off until the first capacitor C1 is charged to a voltage greater than the conduction voltage drop of the second switch Q2. The circuit of the microphone controller 300 that powers the heating element 400 is in an off state, that is, the power supply circuit that conducts current to the heating element 400 is in an off state.

[0119] When the first capacitor C1 is charged to a voltage greater than the conduction voltage drop of the first switch Q1, the first switch Q1 is turned on. A path is formed between the microphone controller 300 and the circuit containing the heating element 400. This means that the power supply circuit that conducts current to the heating element 400 is now connected, providing stable operating power to the heating element 400.

[0120] It is understood that the boost enabling circuit 800 and feedback control circuit 900 shown in Figures 6-8 can also be applied to the structures shown in Figures 13-15. For example, Figure 16 illustrates a circuit structure in which the boost enabling circuit 800 and feedback control circuit 900 are applied to the structure shown in Figure 15. The specific implementation process of the circuit principle can be referred to the description of Figures 7-8 and will not be repeated here.

[0121] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Based on the concept of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present application as described above. For the sake of simplicity, they are not provided in detail. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An aerosol generating device, characterized in that: include: A heating element, the heating element being used to heat the aerosol generating substrate to generate an aerosol; A microphone controller, the microphone controller being configured to output a first voltage when a change in airflow caused by a suction action is detected; A power supply, electrically connected to the microphone controller to supply power to the microphone controller; A boost circuit, the boost circuit is electrically connected between the microphone controller and the power supply, the boost circuit is configured to start based on the first voltage to boost the voltage of the power supply and output a second voltage, and a power supply loop for guiding current for the heating element is established between the boost circuit, the microphone controller and the heating element; A switch circuit, electrically connected to the microphone controller; The switch circuit is configured to switch the power supply to the boost circuit to supply power to the microphone controller with the second voltage after the microphone controller outputs the first voltage, and to turn on the power supply circuit at the same time.

2. The aerosol generating device according to claim 1, characterized in that: The power supply directly supplies power to the microphone controller when the microphone controller does not output the first voltage.

3. The aerosol generating device according to claim 2, characterized in that: The switch circuit is further configured to cut off direct power supply from the power supply to the microphone controller after the microphone controller outputs the first voltage.

4. The aerosol generating device according to claim 1, characterized in that: The switch circuit comprises a delay control branch, and the delay control branch is used for turning on the power supply circuit after a first delay of a first time period starting from when the microphone controller outputs the first voltage.

5. The aerosol generating device according to claim 4, characterized in that: The delay control branch comprises: A first energy storage sub-branch, the first energy storage sub-branch is electrically connected to the microphone controller, and the first energy storage sub-branch is used for charging and discharging based on the first voltage; The first switch sub-branch is electrically connected to the first energy storage sub-branch and the heating element respectively, and the first switch sub-branch turns on or off the power supply circuit based on the voltage change during the charging and discharging process of the first energy storage sub-branch.

6. The aerosol generating device according to claim 5, characterized in that: The first energy storage sub-branch includes a first resistor and a first capacitor; The first end of the first resistor is electrically connected to the microphone controller, the second end of the first resistor is electrically connected to the first switch sub-branch and the first end of the first capacitor respectively, and the second end of the first capacitor is grounded.

7. The aerosol generating device according to claim 5 or 6, characterized in that: The first switch sub-branch includes a first switch tube; The first end of the first switch tube is electrically connected to the first energy storage sub-branch, the second end of the first switch tube is grounded, the third end of the first switch tube is electrically connected to the negative electrode of the heating element, and the positive electrode of the heating element is electrically connected to the microphone controller.

8. The aerosol generating device according to claim 5 or 6, characterized in that: The first switch sub-branch includes a second resistor, a second switch tube and a third switch tube; The first end of the second switch tube is electrically connected to the first energy storage sub-branch, the second end of the second switch tube is grounded, the third end of the second switch tube is electrically connected to the first end of the second resistor and the first end of the third switch tube respectively, the second end of the third switch tube is electrically connected to the second end of the second resistor and the microphone controller respectively, the third end of the third switch tube is electrically connected to the positive electrode of the heating element, and the negative electrode of the heating element is grounded.

9. The aerosol generating device according to claim 1, characterized in that: The switch circuit comprises a second energy storage sub-branch and a second switch sub-branch; The second energy storage sub-branch is electrically connected to the boost circuit and the second switch sub-branch respectively, and the second switch sub-branch is electrically connected between the power supply and the microphone controller; The second energy storage sub-branch is used for charging and discharging based on the change of the second voltage; The second switch sub-branch is used to switch on or off the electrical connection between the power supply and the microphone controller based on the voltage change during the charging and discharging process of the second energy storage sub-branch.

10. The aerosol generating device according to claim 9, characterized in that The second energy storage sub-branch includes a third resistor, a second capacitor and a first diode; The first end of the third resistor is electrically connected to the boost circuit and the second switch sub-branch respectively, and the second end of the third resistor is electrically connected to the first end of the second capacitor, The anode of the first diode is electrically connected to the second switch sub-branch, the second end of the second capacitor is grounded, and the cathode of the first diode is electrically connected to the boost circuit.

11. The aerosol generating device according to claim 9 or 10, characterized in that: The second switch sub-branch includes a fourth switch tube, a fifth switch tube and a fourth resistor; The first end of the fourth resistor is electrically connected to the second end of the fourth switch tube and the boost circuit respectively, the second end of the fourth resistor is electrically connected to the first end of the fourth switch tube and the third end of the fifth switch tube respectively, the third end of the fourth switch tube is electrically connected to the power supply, the first end of the fifth switch tube is electrically connected to the second energy storage sub-branch, and the second end of the fifth switch tube is grounded; Alternatively, the first end of the fifth switch tube is electrically connected to the second energy storage sub-branch, the second end of the fifth switch tube is electrically connected to the second end of the fourth switch tube and the boost circuit respectively, the third end of the fifth switch tube is electrically connected to the first end of the fourth switch tube and the first end of the fourth resistor respectively, the third end of the fourth switch tube is electrically connected to the power supply, and the second end of the fourth resistor is grounded.

12. The aerosol generating device according to claim 1, characterized in that: The aerosol generating device further comprises a boost enabling circuit; The boost enabling circuit is electrically connected to the microphone controller and the boost circuit respectively, and is used to output an enabling signal to the boost circuit based on the first voltage to enable the boost circuit to operate.

13. The aerosol generating device according to claim 12, characterized in that: The aerosol generating device further comprises a feedback control circuit; The feedback control circuit is electrically connected to the boost enabling circuit and the boost circuit, and the feedback control circuit is used to output a feedback signal to the boost circuit based on the first voltage.

14. The aerosol generating device according to claim 12 or 13, characterized in that: The boost enabling circuit includes a second diode and a third capacitor; The anode of the second diode is electrically connected to the microphone controller and the positive electrode of the heating element, respectively, the cathode of the second diode is electrically connected to the first end of the third capacitor and the boost circuit, and the second end of the third capacitor is grounded.

15. The aerosol generating device according to claim 13, characterized in that The feedback control circuit includes a sixth switch tube; The first end of the sixth switch tube is electrically connected to the first end of the boost enabling circuit, the second end of the sixth switch tube is grounded, and the third end of the sixth switch tube is electrically connected to the boost circuit.

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