Aerosol-generating device

Abstract

The invention discloses an aerosol generating device. The aerosol generating device comprises a heating body, a microphone controller, a power supply, a booster circuit and a switching circuit. The heating body is used for heating the aerosol generating substrate to generate aerosol. The microphone controller outputs a first voltage upon detecting a change in air flow caused by a suction operation. And the power supply is electrically connected with the microphone controller so as to supply power to the microphone controller. The booster circuit is started based on the first voltage so as to boost the voltage of the power supply and output a second voltage, and a power supply loop used for guiding current for the heating body is established among the booster circuit, the microphone controller and the heating body. And the switching circuit is electrically connected with the microphone controller. After the microphone controller outputs the first voltage, the switching circuit switches the power supply to the boost circuit to supply power to the microphone controller with the second voltage, and simultaneously conducts the power supply loop. In this way, the stability of the power provided by the battery to the heating body in the smoking process of a user can be improved.

Description

Technical Field

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

[0002] With the development and promotion of electronic atomization technology, the application of aerosol generating devices is becoming more and more extensive. The most important component in an aerosol generating device is a heating element, which heats an aerosol generating substrate, such as a liquid substrate, so that the aerosol generating substrate can generate an aerosol. In existing aerosol generating devices, the battery usually directly provides power to the heating element during the inhalation process.

[0003] 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 puffing 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 puffing action is significantly different from that of the previous puffing action, thereby affecting the user's puffing experience. Summary of the invention

[0004] The present application aims to provide an aerosol generating device, which can improve the stability of the power provided to the heating element during the user's inhalation process.

[0005] 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 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 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 switch circuit, electrically connected to the microphone controller; wherein 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 simultaneously turn on the power supply loop.

[0006] In an optional manner, the power supply directly supplies power to the microphone controller when the microphone controller does not output the first voltage.

[0007] In an optional manner, the switch circuit is further configured to cut off direct power supply to the microphone controller by the power supply after the microphone controller outputs the first voltage.

[0008] In an optional manner, the switch circuit includes a delay control branch, and the delay control branch 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.

[0009] In an optional manner, 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.

[0010] In an optional manner, 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.

[0011] In an optional manner, 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.

[0012] In an optional manner, 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.

[0013] In an optional manner, 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 for charging and discharging 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 the voltage changes during the charging and discharging process of the second energy storage sub-branch.

[0014] In an optional manner, 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.

[0015] In an optional manner, 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, 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.

[0016] In an optional manner, the aerosol generating device also 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 used to output an enabling signal to the boost circuit based on the first voltage to enable the boost circuit to operate.

[0017] In an optional manner, 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.

[0018] In an optional manner, 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.

[0019] In an optional manner, 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.

[0020] 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 switch circuit and a microphone controller. The microphone controller is electrically connected to the boost circuit, the switch 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 the change in airflow caused by the suction action, the microphone controller outputs a first voltage. Then, the boost circuit is started. The boost circuit boosts the voltage of the power supply to a second voltage and outputs it. Afterwards, the switch 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 and the boost circuit powers the microphone controller. In this case, even if the power of the power supply gradually decreases, the boost circuit can provide stable working power to the heating element to improve the stability of the power provided to the heating element during the user's suction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0022] Figure 1 A schematic diagram of the structure of an aerosol generating device provided in one embodiment of the present application;

[0023] Figure 2 A schematic diagram of the structure of a circuit part in an aerosol generating device provided in one embodiment of the present application;

[0024] Figure 3 A schematic diagram of the structure of a circuit part in an aerosol generating device provided in another embodiment of the present application;

[0025] Figure 4 An embodiment of the present application provides Figure 3 A schematic diagram of a circuit structure corresponding to the structure shown;

[0026] Figure 5 Another embodiment of the present application provides Figure 3 A schematic diagram of a circuit structure corresponding to the structure shown;

[0027] Figure 6 A schematic diagram of the structure of a circuit part in an aerosol generating device provided in another embodiment of the present application;

[0028] Figure 7 An embodiment of the present application provides Figure 6 A schematic diagram of a circuit structure corresponding to the structure shown;

[0029] Figure 8 Another embodiment of the present application provides Figure 6 A schematic diagram of a circuit structure corresponding to the structure shown;

[0030] Fig. 9 A schematic diagram of the structure of a circuit part in an aerosol generating device provided in another embodiment of the present application;

[0031] Fig.10 A schematic diagram of the structure of a circuit part in an aerosol generating device provided in another embodiment of the present application;

[0032] Fig.11 An embodiment of the present application provides Fig.10 A schematic diagram of a circuit structure corresponding to the structure shown;

[0033] Fig.12 Another embodiment of the present application provides Fig.10 A schematic diagram of a circuit structure corresponding to the structure shown;

[0034] Fig.13 A schematic diagram of the structure of a circuit part in an aerosol generating device provided in another embodiment of the present application;

[0035] Fig.14 A schematic diagram of the structure of a circuit part in an aerosol generating device provided in another embodiment of the present application;

[0036] Fig.15 An embodiment of the present application provides Fig.14 A schematic diagram of a circuit structure corresponding to the structure shown;

[0037] Fig.16 Another embodiment of the present application provides Fig.14 Schematic diagram of circuit structure corresponding to the structure shown. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of the aerosol generating device provided in the embodiment of the present application. Figure 1 As shown, the aerosol generating device 1000 includes an atomizer 1001 storing a liquid matrix and atomizing the liquid matrix to generate an aerosol, and a power supply mechanism 1002 for supplying power to the atomizer 1001 .

[0040] Wherein, the atomizer 1001 includes a liquid storage chamber for storing a liquid matrix, and an atomizing assembly for drawing a liquid matrix from the liquid storage chamber and heating the atomized liquid matrix. Wherein, the atomizing assembly generally includes a capillary liquid conducting element for drawing a liquid matrix, and a heating element 400 combined with the liquid conducting element. The heating element 400 heats at least part of the liquid matrix of the liquid conducting element during power-on to generate an aerosol. In an optional implementation, the liquid conducting element includes a flexible fiber, such as cotton fiber, non-woven fabric, glass fiber rope, etc., or includes a porous material with a microporous structure, such as a porous ceramic; the heating element may be combined with the liquid conducting element by printing, deposition, sintering or physical assembly, or wound on the liquid conducting element. In some optional implementations, the heating element 400 may be a resistive heating net, a resistive heating coil, etc. In other embodiments, the heating element 400 may also be a heating element wound by a sheet-like or mesh-like substrate.

[0041] The power supply mechanism 1002 includes a receiving cavity 1003 disposed at one end along the length direction for receiving and accommodating at least a portion of the atomizer 1001, and a first electrical contact 601 at least partially exposed in the receiving cavity 1003. The power supply mechanism 1002 is used to form an electrical connection with the atomizer 1001 when at least a portion of the atomizer 1001 is received and accommodated in the power supply mechanism 1002, thereby supplying power to the atomizer 1001.

[0042] 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, and 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.

[0043] A sealing member 600 is provided inside the power supply mechanism 1002, and at least a portion of the internal space of the power supply mechanism 1002 is separated by the sealing member 600 to form the above receiving chamber 1003. In this embodiment, the sealing member 600 is configured to extend in a longitudinal direction perpendicular to the power supply mechanism 1002, and is preferably made of a flexible material such as silicone, thereby preventing the liquid matrix that infiltrates from the atomizer 1001 to the receiving chamber 1003 from flowing to the microphone controller 300 and other components inside the power supply mechanism 1002.

[0044] The power supply mechanism 1002 also includes a power supply 500 for powering the other end away from the receiving cavity 1003 along the length direction. It can be a power supply 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 necessary, the power supply 500 can provide electrical energy to the heating element 400.

[0045] The power supply mechanism 1002 further includes a microphone controller 300 disposed between the power supply 500 and the receiving chamber 1003, and the microphone controller 300 is operable to guide current between the power supply 500 and the first electrical contact 601. In use, the microphone controller 300 is used to sense the suction airflow generated when the atomizer 100 is inhaled, and then control the power supply 500 to supply power to the atomizer 1001.

[0046] 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 .

[0047] It should be noted that if Figure 1 The hardware structure of the aerosol generating device 1000 shown is only one example, and the aerosol generating device 1000 may have more or fewer components than shown in the figures, may combine two or more components, or may have a different configuration of components.

[0048] and, Figure 1 The aerosol generating device 1000 shown can be applied to a variety of different occasions and play different roles, and the embodiments of the present application do not impose specific restrictions 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 users to inhale.

[0049] Please refer to Figure 2 , Figure 2 This is a schematic diagram of the circuit structure of the aerosol generating device provided in the embodiment of the present application. Figure 2 As shown, the aerosol generating device 1000 further 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, and 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.

[0050] Specifically, the microphone controller 300 is used to output a first voltage when an airflow change caused by a suction action is detected. The power supply 500 is used to supply power to the microphone controller 300. The boost circuit 100 is configured to start based on the first voltage to boost the voltage of the power supply 500 and output a second voltage. And a power supply loop for guiding current to the heating element 400 is established between the boost circuit 100, the microphone controller 300 and the heating element 400. The switch circuit 200 is configured to switch the power supply 500 to the boost circuit to supply power to the microphone controller 300 with a second voltage after the microphone controller 300 outputs the first voltage, and at the same time turn on the power supply loop.

[0051] 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 the current state unchanged.

[0052] When the microphone controller 300 detects the change in airflow caused by the suction action, the microphone controller 300 outputs a first voltage. Then, the boost circuit 100 is started. The boost circuit 100 boosts the voltage of the power supply 500 to a second voltage and outputs it. Afterwards, the switch circuit 200 conducts a power supply circuit that provides current to the heating element 400 through the boost circuit 100, and the power supply circuit at least includes the boost circuit 100, the microphone controller 300 and the heating element 400. Then, the power supply 500 is directly powered by the microphone controller 300, and the power supply is switched to the boost circuit 100 to power the microphone controller 300. In this case, even if the power of the power supply 500 gradually decreases, the boost circuit 100 can provide a stable working power for the heating element 400, so as to improve the stability of the power provided to the heating element during the user's suction process, thereby improving the user's suction experience.

[0053] 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.

[0054] 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.

[0055] 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 for the power supply 500 to supply power to the microphone controller 300 through the boost circuit 100.

[0056] In one embodiment, if Figure 3 As shown, 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, and the second switch sub-branch 202 is electrically connected between the power supply 500 and the microphone controller 300.

[0057] Specifically, the second energy storage sub-branch 201 is used for charging and discharging based on the change of the second voltage. The second switch sub-branch 202 is used for switching on or 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.

[0058] In this embodiment, after the boost circuit 100 is started, the voltage output by the boost circuit 100 gradually increases, and before the voltage output by the boost circuit 100 increases to a stable second voltage, the power supply 500 charges the second energy storage sub-branch 201. When the second energy storage sub-branch 201 is charged to a voltage 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 turned on. The power supply 500 supplies power to the microphone controller 300 to maintain the stable operation of the microphone controller 300.

[0059] 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 is discharged 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 cut off. The power supply 500 stops directly supplying power to the microphone controller 300, and switches to supplying power to the microphone controller 300 with the second voltage output by the boost circuit 100, so as to provide stable working power to the microphone controller 300.

[0060] In addition, in this embodiment, the second energy storage sub-branch 201 and the second switch sub-branch 202 are configured to form a switch circuit, so that the second energy storage sub-branch 201 receives the enable signal of the microphone controller 300, and the characteristics of the device itself in the second switch sub-branch 202 (such as threshold voltage or threshold voltage) determine the conduction or cutoff of the circuit, thereby realizing the switching of the power supply head of the microphone controller 300. Compared with the solution in the related art of adding a logic controller / chip to control the switch tube to realize the switching of the power supply head, it has a more obvious cost advantage.

[0061] Please refer to Figure 4 , Figure 4 FIG. 2 shows an exemplary circuit structure of the second energy storage sub-branch 201. Figure 4 As shown, the second energy storage sub-branch 201 includes a third resistor R3, a second capacitor C2 and a first diode D1.

[0062] 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.

[0063] 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, so as to protect the second energy storage sub-branch 201 and the second switch sub-branch 202.

[0064] Figure 4 A circuit structure of the second switch sub-branch 202 is also exemplarily shown. Figure 4 As shown, the second switch sub-branch 202 includes a fourth switch tube Q4, a fifth switch tube Q5 and a fourth resistor R4.

[0065] 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.

[0066] In this embodiment, the fifth switch tube Q5 is an NMOS tube, and the fourth switch tube Q4 is a PMOS tube. The gate of the NMOS tube is the first end of the fifth switch tube Q5, the source of the NMOS tube is the second end of the fifth switch tube Q5, and the drain of the NMOS tube is the third end of the fifth switch tube Q5; the gate of the PMOS tube is the first end of the fourth switch tube Q4, the source of the PMOS tube is the second end of the fourth switch tube Q4, and the drain of the PMOS tube is the third end of the fourth switch tube Q4.

[0067] 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.

[0068] The following Figure 4 The principle of the circuit structure shown is explained again.

[0069] After the microphone controller 300 outputs the first voltage to start 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 through the body diode of the fourth switch tube 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 tube Q5, the fifth switch tube Q5 is turned on. The gate of the fourth switch tube Q4 is grounded GND, and the fourth switch tube Q4 is also turned on. The fourth switch tube Q4 conducts the electrical connection between the power supply 500 and the microphone controller 300. The power supply 500 supplies power to the microphone controller 300 through the fourth switch tube Q4 to maintain the stable operation of the microphone controller 300.

[0070] 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 is discharged to a voltage less than or equal to the conduction voltage drop of the fifth switch tube Q5, the fifth switch tube Q5 is turned off, and the fourth switch tube Q4 is also turned off. Then, the electrical connection between the power supply 500 and the microphone controller 300 is cut off. The power supply 500 stops directly supplying power to the microphone controller 300, and switches to supplying power to the microphone controller 300 with the second voltage output by the boost circuit 100, so as to provide stable working power to the microphone controller 300.

[0071] It should be noted that if Figure 4 The hardware structure of the second energy storage sub-branch 201 and the second switch sub-branch 202 shown 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 combine two or more components, or may have different component configurations, and the various components shown in the figure may be implemented in hardware, software, or a combination of hardware and software including one or more signal processing and / or application-specific integrated circuits.

[0072] For example, Figure 5 As shown, Figure 5 Another circuit structure of the second switch sub-branch 202 is exemplarily shown, wherein the second switch sub-branch 202 still includes a fourth switch tube Q4, a fifth switch tube Q5 and a fourth resistor R4.

[0073] Specifically, the first end of the fifth switch tube Q4 is electrically connected to the second energy storage sub-branch 201, the 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, the 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, the third end of the fourth switch tube Q4 is electrically connected to the power supply 500, and the second end of the fourth resistor R4 is grounded GND.

[0074] In this embodiment, taking the fourth switch tube Q4 and the fifth switch tube Q5 as an example, the gate of the PMOS tube is the first end of the fourth switch tube Q4 (fifth switch tube Q5), the source of the PMOS tube is the second end of the fourth switch tube Q4 (fifth switch tube Q5), and the drain of the PMOS tube is the third end of the fourth switch tube Q4 (fifth switch tube Q5).

[0075] In this embodiment, after the microphone controller 300 outputs the first voltage to start 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 through the body diode of the fourth switch tube Q4 and the third resistor R3. When the second capacitor C2 is charged to a voltage greater than the cut-off voltage drop of the fifth switch tube Q5, the fifth switch tube Q5 is turned off. The gate of the fourth switch tube Q4 is grounded GND, and the fourth switch tube Q4 is turned on. The fourth switch tube Q4 conducts the 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 10ms after the boost circuit 100 starts to output the voltage, the power supply 500 can be directly powered to the microphone controller 300 by turning on the fourth switch tube Q4, so that the heating element 400 can start working in time and completely without hysteresis, which is conducive to ensuring the user's suction experience.

[0076] 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 is discharged to a voltage less than or equal to the cut-off voltage drop of the fifth switch tube Q5, the fifth switch tube Q5 is turned on. The gate of the fourth switch tube Q4 is pulled up by the second voltage, and the fourth switch tube Q4 is turned off. Then, the electrical connection between the power supply 500 and the microphone controller 300 is cut off. The power supply 500 stops directly supplying power to the microphone controller 300, and switches to supplying power to the microphone controller 300 with the second voltage output by the boost circuit 100, so as to provide stable working power to the microphone controller 300.

[0077] In another embodiment, if Figure 6As shown, the aerosol generating device 1000 further includes a boost enabling circuit 800. The boost enabling circuit 800 is electrically connected to the microphone controller 300 and the boost circuit 100 respectively.

[0078] 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 purpose of controlling the operation and stopping of the boost circuit 100 is achieved.

[0079] In one embodiment, please continue to refer to Figure 6 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 .

[0080] Specifically, the feedback control circuit 900 is used to output a feedback signal to the boost circuit 100 based on the first voltage. Then, the boost circuit 100 can determine that the microphone controller 300 has output the first voltage. In addition, in another embodiment, when the microphone controller 300 does not output the first voltage, the feedback control circuit 900 stops outputting the feedback signal to the boost circuit 100. That is, the purpose of stopping the operation of the feedback control circuit 900 when the microphone controller 300 does not output the first voltage is achieved, which is conducive to saving power consumption.

[0081] Please refer to Figure 7 , Figure 7 FIG. 8 is an exemplary circuit diagram of a boost enabling circuit 800. Figure 7 As shown, the boost enabling circuit 800 includes a second diode D2 and a third capacitor C3.

[0082] 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. The second end of the third capacitor C3 is grounded GND.

[0083] 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.

[0084] Figure 7 A circuit structure of the feedback control circuit 900 is also exemplarily shown. Figure 7 As shown, the feedback control circuit 900 includes a sixth switch tube Q6.

[0085] 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 .

[0086] Specifically, 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 gate of the sixth switch tube Q6, so that the sixth switch tube Q6 is turned on. The source of the sixth switch tube Q6 outputs an enable signal (a low level signal in this embodiment) to the boost circuit 100.

[0087] In this embodiment, the sixth switch tube Q6 is an NMOS tube as an example. The gate of the NMOS tube is the first end of the sixth switch tube Q6, the source of the NMOS tube is the second end of the sixth switch tube Q6, and the drain of the NMOS tube is the third end of the sixth switch tube Q6.

[0088] 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.

[0089] Understandably, Figure 7 The circuit structure shown is in Figure 4 The circuit structure shown in FIG. 1 is based on the circuit structure shown in FIG. 1 , and a boost enabling circuit 800 and a feedback control circuit 900 are added. Figure 5 The circuit structure shown in the figure can also be increased by a boost enabling circuit 800 and a feedback control circuit 900, as shown in FIG. Figure 8 shown. Figure 8 The principle of the circuit structure shown can be referred to for Figure 7 The description is not repeated here.

[0090] In addition, it should be noted that Figure 3-Figure 8 In the illustrated embodiment, the switch circuit 200 is disposed between the power supply and the microphone controller 200. In other embodiments, the switch circuit 200 may also be disposed between the heating element 400 and the microphone controller 300.

[0091] In one embodiment, if Fig. 9 As shown, 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 .

[0092] Among them, the delay control branch 203 is used to turn on the power supply circuit after the microphone controller 300 outputs the first voltage and delays the first time. The first time is determined by the characteristics of the delay control branch 203, which can be set according to the actual application scenario, and the embodiment of the present application does not impose specific restrictions on this. In addition, by reasonably configuring the first time, it is also helpful to reduce the user's bad experience caused by too obvious aerosol hysteresis after the aerosol generating device 1000 starts to inhale.

[0093] Specifically, after the microphone controller 300 outputs the first voltage, the boost circuit 100 is started. In addition, the module that supplies power to the microphone controller 300 is switched from the power supply 500 to the boost circuit 100. At this time, by setting a delay of the first duration, the voltage output by the boost circuit 100 can be gradually increased to a stable second voltage. After that, the power supply circuit is turned on to provide a stable voltage to the heating element 400, that is, to provide a stable working power to the heating element 400.

[0094] In one embodiment, if Fig. 9 As shown, 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 respectively.

[0095] Specifically, the first energy storage sub-branch 2032 is used for charging and discharging based on the first voltage. The first switch sub-branch 2031 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 2032.

[0096] 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.

[0097] 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 turned on. The microphone controller 300 supplies power to the heating element 400 to provide stable working power for the heating element 400.

[0098] Please refer to Fig.11 , Fig.11 An exemplary circuit structure of the first energy storage sub-branch 2032 is shown. Fig.11 As shown, the first energy storage sub-branch 2032 includes a first resistor R1 and a first capacitor C1.

[0099] 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.

[0100] Specifically, the first resistor R1 is used for current limiting. The first capacitor C1 is used for charging and discharging.

[0101] Fig.11 A circuit structure of the first switch sub-branch 2031 is also exemplarily shown. Fig.11 As shown, the first switch sub-branch 2031 includes a second resistor R2, a second switch tube Q2 and a third switch tube Q3.

[0102] 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, the third end of the third switch tube Q3 is electrically connected to the positive electrode of the heating element 400, and the negative electrode of the heating element 400 is grounded GND.

[0103] In this embodiment, the second switch tube Q2 is an NMOS tube, and the third switch tube Q3 is a PMOS tube. The gate of the NMOS tube is the first end of the second switch tube Q2, the source of the NMOS tube is the second end of the second switch tube Q2, and the drain of the NMOS tube is the third end of the second switch tube Q2; the gate of the PMOS tube is the first end of the third switch tube Q3, the source of the PMOS tube is the second end of the third switch tube Q3, and the drain of the PMOS tube is the third end of the third switch tube Q3.

[0104] 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.

[0105] The following Fig.11 The principle of the circuit structure shown is explained again.

[0106] 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 a 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 in 10ms-100ms, so that the user does not have a bad experience caused by too obvious aerosol hysteresis.

[0107] When 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 is turned on. The gate of the third switch tube Q3 is grounded GND and forced to be pulled low, and the third switch tube Q3 is turned on. The microphone controller 300 is electrically connected to the heating element 400 through the third switch tube Q3. At this time, the power supply circuit that guides the current to the heating element 400 is turned on to provide stable working power for the heating element 400.

[0108] It is understandable that if Figure 6-Figure 8 The boost enabling circuit 800 and the feedback control circuit 900 shown can also be applied to Figure 9-11 In the structure shown. For example, Fig.12 The boost enabling circuit 800 and the feedback control circuit 900 are applied to Fig.11 A circuit structure in the structure shown in FIG. The specific implementation process of its circuit principle can refer to the Figure 7-Figure 8 The description is not repeated here.

[0109] In other embodiments, the switch circuit 200 may also be electrically connected to the negative electrode of the heating element 400. Fig.13 As shown, the switch circuit 200 may also include a delay control branch 203. And, Fig.13 The delay control branch 203 shown is connected to Fig. 9 The working principle of the delay control branch 203 shown is the same and will not be described again here.

[0110] also, Fig.13 The delay control branch 203 shown in FIG. 2 may also include a first switch sub-branch 2031 and a first energy storage sub-branch 2032. The specific circuit structure is as follows: Fig.14 As shown. And Fig.14 The working principle of the first switch sub-branch 2031 and the first energy storage sub-branch 2032 is similar to Fig.10 The same as described above will not be repeated here.

[0111] Please refer to Fig.15 , Fig.15 An example is shown with Fig.14 A circuit structure corresponding to the structure shown in FIG. Fig.15 As shown, the first switch sub-branch 2031 includes a first switch tube Q1.

[0112] 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.

[0113] In this embodiment, the first switch tube Q1 is an NMOS tube as an example. The gate of the NMOS tube is the first end of the first switch tube Q1, the source of the NMOS tube is the second end of the first switch tube Q1, and the drain of the NMOS tube is the third end of the first switch tube Q1.

[0114] 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.

[0115] In this embodiment, 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 first switch tube Q1 remains turned off. The circuit for the microphone controller 300 to supply power to the heating element 400 is in a cut-off state, that is, the power supply circuit for guiding the current to the heating element 400 is in a cut-off state.

[0116] When the first capacitor C1 is charged to a voltage greater than the conduction voltage drop of the first switch tube Q1, the first switch tube Q1 is turned on. The microphone controller 300 forms a path with the circuit where the heating element 400 is located, that is, the power supply circuit that guides the current of the heating element 400 is turned on, and can provide stable working power for the heating element 400.

[0117] It is understandable that if Figure 6-Figure 8 The boost enabling circuit 800 and the feedback control circuit 900 shown can also be applied to Figure 13-Figure 15 In the structure shown. For example, Fig.16 The boost enabling circuit 800 and the feedback control circuit 900 are applied to Fig.15 A circuit structure in the structure shown in FIG. The specific implementation process of its circuit principle can refer to the Figure 7-Figure 8The description is not repeated here.

[0118] 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. Under 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 changes in different aspects of the present application as described above, which are not provided in detail for the sake of simplicity. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. 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; 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.

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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