Atomization device
By using non-contact electromagnetic induction heating and inverter circuit control, the problems of low heating efficiency and poor reliability of existing atomizing devices have been solved, achieving a more uniform and reliable heating effect and extending the device's lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HG INNOVATION LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-05-01
AI Technical Summary
Existing atomizing devices have low heating efficiency and poor reliability, and hard electrical connections can easily lead to poor contact and shortened lifespan.
Non-contact electromagnetic induction heating is adopted, which generates eddy currents through an electromagnetic drive module to heat the heating element. Combined with an inverter circuit and dead time control, heating uniformity and reliability are ensured.
It improves the heating efficiency and reliability of the atomizing device, extends its service life, and enhances the user experience.
Smart Images
Figure CN224179196U_ABST
Abstract
Description
atomizing device Technical Field
[0001] This application relates to the field of atomization technology, specifically to an atomization device. Background Technology
[0002] An atomizing device is a device that forms an aerosol from stored atomizable media through heating or ultrasound. Atomizing devices typically use resistance heating with a heating wire. Resistance heating has drawbacks such as low conversion efficiency, high losses, uneven heating, slow temperature rise, and inaccurate temperature control. Furthermore, resistance heating requires wired connections, which are prone to manufacturing defects (including open circuits and short circuits), leading to multiple production steps and high costs. Additionally, the heating wire needs to be electrically rigidly connected to the atomizing device's internal control circuitry (via wires / wires). This rigid connection is susceptible to poor contact due to electrode oxidation and circuit corrosion, affecting the atomizing device's lifespan and user experience. Summary of the Invention
[0003] The main technical problem addressed by this application is to provide an atomizing device to improve the heating efficiency and reliability of the atomizing device.
[0004] One embodiment of this application provides an atomizing device, comprising: a heating element for heating an atomizing matrix to form an aerosol; an electromagnetic drive module including a first inductor, the first inductor being used to generate an alternating magnetic field to induce eddy currents in the heating element to heat the heating element; a main control module electrically connected to the electromagnetic drive module, the main control module being used to control the electromagnetic drive module to convert direct current into alternating current, so that the alternating current passes through the first inductor to generate an alternating magnetic field; and a battery cell electrically connected to the main control module.
[0005] According to one embodiment of this application, the electromagnetic drive module includes a first inverter circuit and a second inverter circuit. The main control module is used to control the first inverter circuit to invert the DC current to obtain a positive half-wave signal of the AC current. The main control module is also used to control the second inverter circuit to invert the DC current to obtain a negative half-wave signal of the AC current.
[0006] According to one embodiment of this application, the main control module is configured to output a first control signal for driving the first inverter circuit, and the main control module is also configured to output a second control signal for driving the second inverter circuit. The first control signal and the second control signal have a dead time so that the first inverter circuit and the second inverter circuit cannot be started at the same time.
[0007] According to one embodiment of this application, the dead time is 0.2 μs to 0.4 μs.
[0008] According to one embodiment of this application, the first inverter circuit includes a first switch and a third switch, the second inverter circuit includes a second switch and a fourth switch, a first end of the first inductor is coupled to the first switch and the second switch, a second end of the first inductor is coupled to the third switch and the fourth switch, the first control signal includes a first pulse signal and a third pulse signal, the second control signal includes a second pulse signal and a fourth pulse signal, and the first pulse signal, the second pulse signal, the third pulse signal and the fourth pulse signal are respectively used to control the opening and closing states of the first switch, the second switch, the third switch and the fourth switch.
[0009] According to one embodiment of this application, the electromagnetic drive module further includes a first capacitor bank, which is connected in series with the first inductor, and the second end of the first inductor is coupled between the third switch and the fourth switch through the first capacitor bank.
[0010] According to one embodiment of this application, the electromagnetic drive module includes a second inductor, which is connected in series with the first capacitor bank. A first end of the second inductor is coupled to the first capacitor, and a second end of the second inductor is coupled between the third switch and the fourth switch.
[0011] According to one embodiment of this application, the electromagnetic drive module includes a second capacitor bank, a first terminal of the second capacitor bank being coupled to the input terminal of the electromagnetic drive module, and a second terminal of the second capacitor bank being coupled to a protective ground.
[0012] According to one embodiment of this application, the electromagnetic drive module includes a power detection circuit, the power detection circuit includes a first resistor, a first end of the first resistor is coupled to the voltage detection terminal of the main control module and the first inductor, the second end of the first resistor is grounded, and the main control module is configured to collect the voltage difference across the first resistor and control the output power of the electromagnetic drive module according to the voltage difference.
[0013] According to one embodiment of this application, the atomizing device further includes a pneumatic detection module, which is coupled to the main control module. The pneumatic detection module is used to detect changes in airflow within the atomizing device and send a start signal. The main control module is configured to control the electromagnetic drive module to generate alternating current according to the start signal.
[0014] The atomizing device provided in this application utilizes non-contact electromagnetic induction heating. By setting an electromagnetic drive module to generate eddy currents to heat the heating element, the atomizing matrix is heated to form an aerosol, resulting in more uniform and sufficient heating and improving the heating efficiency and reliability of the atomizing device. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 is a schematic diagram of the structure of an embodiment of the atomizing device of this application;
[0017] Figure 2 is a schematic diagram of another embodiment of the atomizing device of this application;
[0018] Figure 3 is a schematic diagram of the electromagnetic drive module of the atomizing device shown in Figure 1.
[0019] Figure 4 is a schematic diagram of the main control module of the atomizing device shown in Figure 1.
[0020] The attached diagram lists the components represented by each number as follows:
[0021] Atomizing device 10, heating element 100, electromagnetic drive module 200, first inductor L1, second inductor L2, third inductor L3, first capacitor group C1, second capacitor group C2, first resistor R1, second resistor R2, first inverter circuit 210, first switch 211, third switch 212, second inverter circuit 220, second switch 221, fourth switch 222, power detection circuit 330, test pad 340, main control module 300, battery cell 400, pneumatic detection module 500, charging module 600, charging interface 700, signal output terminal PA4, signal output terminal PA5, signal output terminal PC6, signal output terminal PC7, voltage detection terminal PB13, input terminal VBAT, protective ground PGND. Detailed Implementation
[0022] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.
[0023] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.
[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0025] This application provides an atomizing device 10, as shown in FIG1. The atomizing device 10 includes a heating element 100, an electromagnetic drive module 200, a main control module 300, and a battery cell 400. The heating element 100 is used to heat the atomizing matrix to form an aerosol; the electromagnetic drive module 200 includes a first inductor L1, which is used to generate an alternating magnetic field, causing the heating element 100 to generate eddy currents to heat the heating element 100; the main control module 300 is electrically connected to the electromagnetic drive module 200, and is used to control the electromagnetic drive module 200 to convert direct current into alternating current, so that the alternating current passes through the first inductor L1 to generate an alternating magnetic field; the battery cell 400 is electrically connected to the main control module 300 and is used to provide direct current to the atomizing device 10. This application utilizes a non-contact electromagnetic induction heating principle to heat the atomizing substrate. According to Faraday's law of electromagnetic induction, when the heating element 100 is placed in a changing magnetic field, an induced electromotive force is generated inside the heating element 100, thereby forming eddy currents. When the eddy currents flow inside the heating element 100, due to the resistance of the heating element 100, electrical energy is converted into heat energy, causing the heating element 100 to heat up, thus producing an atomization effect on the atomizing substrate on the heating element 100. Compared with resistance heating, electromagnetic induction heating can make the heating element 100 heat up more uniformly, improve the temperature rise efficiency, and at the same time, the electromagnetic drive module 200 and the heating element 100 do not come into contact, avoiding electrode oxidation and circuit corrosion caused by hard electrical connections, thus improving the service life of the atomizing device 10 and the user experience.
[0026] In some embodiments, the heating element 100 is made of metal or a metal alloy to generate eddy currents in an alternating magnetic field. The heating element 100 can be a heating wire or heating mesh made of materials such as iron-chromium-aluminum, stainless steel, or nickel-chromium alloy.
[0027] In some embodiments, the first inductor L1 can be coupled to the heating element 100, the first inductor L1 can be spirally wound on the heating element 100, and the first inductor L1 does not directly contact the heating element 100.
[0028] In some embodiments, as shown in FIG3, the electromagnetic drive module 200 includes a first inverter circuit 210 and a second inverter circuit 220. The main control module 300 is used to control the first inverter circuit 210 to invert the DC current to obtain a positive half-wave signal of the AC current. The main control module 300 is also used to control the second inverter circuit 220 to invert the DC current to obtain a negative half-wave signal of the AC current.
[0029] Specifically, the first inverter circuit 210 and the second inverter circuit 220 work alternately, so that the DC current flowing into the electromagnetic drive module 200 is converted into alternating current.
[0030] In some embodiments, the main control module 300 is configured to output a first control signal for driving the first inverter circuit 210, and also configured to output a second control signal for driving the second inverter circuit 220. Both the first and second control signals have a dead time to prevent the first inverter circuit 210 and the second inverter circuit 220 from starting simultaneously. Dead time refers to a time interval set between two switching devices in electronic devices, particularly in inverters and control circuits, to avoid short circuits or damage caused by the simultaneous conduction of two switching devices. This time interval ensures that one switch can only be turned on after the other has been turned off, thus preventing bridge arm shoot-through. If the first inverter circuit 210 and the second inverter circuit 220 start simultaneously during alternating operation, current could short-circuit them. By setting a dead time, it can be ensured that the first inverter circuit 210 and the second inverter circuit 220 will not start simultaneously, avoiding short circuits and improving the reliability and safety of the atomizing device.
[0031] In some embodiments, the dead time is 0.2 μs to 0.4 μs. Specifically, the dead time can be 0.2 μs, 0.24 μs, 0.3 μs, 0.374 μs, 0.4 μs, or any value between these times. The inductors and capacitors in the atomizing device 10 circuit can generate noise during operation, leading to false triggering of the control signal. The dead time needs to be long enough to shield the noise, but an excessively long dead time will reduce control accuracy and efficiency, and affect the heating response speed of the atomizing device 10. Setting the dead time to the range of 0.2 μs to 0.4 μs can, on the one hand, avoid circuit short circuits, suppress noise interference, and ensure stable operation of the heating element 100; on the other hand, it can guarantee the heating response speed of the atomizing device 10, avoid temperature fluctuations caused by switching delays, achieve efficient energy conversion, and improve the user experience.
[0032] In some embodiments, the first inverter circuit 210 includes a first switch 211 and a third switch 212, the second inverter circuit 220 includes a second switch 221 and a fourth switch 222, the first end of the first inductor L1 is coupled to the first switch 211 and the second switch 221, the second end of the first inductor L1 is coupled to the third switch 212 and the fourth switch 222, the first control signal includes a first pulse signal and a third pulse signal, the second control signal includes a second pulse signal and a fourth pulse signal, the first pulse signal, the second pulse signal, the third pulse signal and the fourth pulse signal are respectively used to control the opening and closing states of the first switch 211, the second switch 221, the third switch 212 and the fourth switch 222.
[0033] In some embodiments, the first pulse signal and the third pulse signal have the same frequency and the same pulse width, and the second pulse signal and the fourth pulse signal have the same frequency and the same pulse width.
[0034] In some embodiments, during the positive half-wave signal of the alternating current, the first switch 211 and the third switch 212 are triggered and opened by the first pulse signal and the third pulse signal, respectively, while the second switch 221 and the fourth switch 222 are closed. Current flows through the first switch 211, the first inductor L1, and the third switch 212, from the first end of the first inductor L1 to the second end of the first inductor L1, forming a positive current. During the negative half-wave signal of the alternating current, the second switch 221 and the fourth switch 222 are triggered and opened by the second pulse signal and the fourth pulse signal, respectively, while the first switch 211 and the third switch 212 are closed. Current flows through the fourth switch 222, the first inductor L1, and the second switch 221, from the second end of the first inductor L1 to the first end of the first inductor L1, forming a reverse current.
[0035] In some embodiments, the first switch 211, the second switch 221, the third switch 212, and the fourth switch 222 can be MOSFETs. MOSFETs, also known as field-effect transistors, are semiconductor devices that operate based on the electric field effect and are widely used in electronic circuits. Their operating principle mainly relies on the control of the current between the source and drain by the gate voltage. When the gate voltage is zero or negative, the MOSFET is in the off state, and almost no current flows between the source and drain. When a positive voltage is applied to the gate, the resistance between the source and drain decreases, forming a conductive channel.
[0036] In some embodiments, the first switch 211 and the fourth switch 222 can be PMOS transistors, which are turned on when the gate voltage is lower than the source voltage and exceeds the threshold voltage. The second switch 221 and the third switch 212 can be NMOS transistors, which are turned on when the gate voltage is higher than the source voltage and exceeds the threshold voltage.
[0037] In some embodiments, as shown in Figure 4, the main control module 300 can be an MCU chip. A microcontroller unit (MCU), also known as a single-chip microcomputer or microcontroller, is a single-chip microcomputer that integrates a central processing unit (CPU) with appropriately reduced frequency and specifications, along with peripheral interfaces such as memory, counters, USB, A / D converter, UART, PLC, DMA, and even LCD driver circuitry, onto a single chip, forming a chip-level computer for different application combinations. Specifically, the main control module 300 is packaged similarly to a QFN32, with the model number CS32L015K8V6.
[0038] Specifically, the main control module 300 is provided with signal output terminals PA5, PA4, PC7, and PC6. Signal output terminal PA5 is coupled to the gate of the first switch 211, signal output terminal PA4 is coupled to the gate of the second switch 221, signal output terminal PC7 is coupled to the gate of the third switch 212, and signal output terminal PC6 is coupled to the gate of the fourth switch 222. Signal output terminals PA5, PA4, PC7, and PC6 respectively output a first pulse signal, a second pulse signal, a third pulse signal, and a fourth pulse signal to each gate.
[0039] Specifically, the first, second, third, and fourth pulse signals are PWM signals. The PWM signals control the average voltage or current in the circuit by adjusting the duty cycle of the pulses (the ratio of the high-level time to the entire cycle). Each pulse consists of a high level and a low level, and the change in the duty cycle directly affects the average value of the output signal.
[0040] In some implementations, the electromagnetic drive module 200 also includes a first capacitor bank C1, which is connected in series with a first inductor L1. The second end of the first inductor L1 is coupled between the third switch 212 and the fourth switch 222 through the first capacitor bank C1. The first capacitor bank C1 is a resonant capacitor, forming a series resonance with the first inductor L1. Series resonance allows the circuit to reach a resonant state at a specific frequency, at which point the circuit impedance is minimum and the current is maximum, thereby significantly improving the output power and efficiency of the electromagnetic drive module 200.
[0041] In some embodiments, the first capacitor bank C1 may include multiple capacitors connected in parallel. Connecting multiple capacitors in parallel can significantly reduce the total impedance, and if one capacitor in the parallel circuit fails (open circuit), the remaining capacitors can still share the function, thus improving the fault tolerance and reliability of the circuit. Specifically, the first capacitor bank C1 may be composed of four capacitors with a capacitance of 0.1μF connected in parallel.
[0042] In some embodiments, the electromagnetic drive module 200 includes a second inductor L2, which is connected in series with the first capacitor group C1 and the first inductor L1. The first end of the second inductor L2 is coupled to the first capacitor group C1, and the second end of the second inductor L2 is coupled between the third switch 212 and the fourth switch 222.
[0043] In some embodiments, the second inductor L2 can be coupled to the heating element 100, the second inductor L2 can be spirally wound around the heating element 100, and the second inductor L2 does not directly contact the heating element 100.
[0044] In some embodiments, the alternating current generated by the electromagnetic drive module 200 can form an alternating magnetic field through the second inductor L2. Under the alternating magnetic field, the heating element 100 generates eddy currents, which cause the heating element 100 to heat up. The second inductor L2 can increase the output power of the electromagnetic drive module 200 and improve the heating efficiency of the atomizing device 10.
[0045] In some embodiments, the number of heating elements 100 can be two, with a first inductor L1 wound around one of the heating elements 100 and a second inductor L2 wound around the other heating element 100. The two heating elements 100 can be used simultaneously to heat the atomizing matrix.
[0046] In some embodiments, the electromagnetic drive module 200 includes a resistor patch. A first end of the resistor patch is coupled to a first capacitor bank C1, and a second end of the resistor patch is coupled to a third switch 212 and a fourth switch 222. The resistance of the resistor patch is 0R. The location of the resistor patch is a reserved inductor position. When the second inductor L2 is not needed, the reserved inductor position can be set as a resistor patch. When the second inductor L2 is needed, the resistor patch can be replaced with the second inductor L2.
[0047] In some embodiments, the electromagnetic drive module 200 includes a second capacitor bank C2. A first terminal of the second capacitor bank C2 is coupled to the input terminal VBAT of the electromagnetic drive module 200, and a second terminal of the second capacitor bank C2 is coupled to protective ground PGND. The second capacitor bank C2 can be used for input filtering and, simultaneously, absorbs high-frequency resonance when the first inverter circuit 210 and the second inverter circuit 220 switch operation.
[0048] In some embodiments, the input terminals VBAT of the battery cell 400 and the electromagnetic drive module 200 and the main control module 300 are connected to supply power to the electromagnetic drive module 200 and the main control module 300.
[0049] In some embodiments, the electromagnetic drive module 200 includes a third inductor L3, the first end of the third inductor L3 being coupled to the input terminal VBAT, the second end of the third inductor L3 being coupled to the second capacitor group C2, and the third inductor L3 being a filter inductor.
[0050] In some embodiments, the electromagnetic drive module 200 includes test pads 340 for software and hardware debugging. There are multiple test pads 340, which can be distributed across the two ends of the first inductor L1 and the two ends of the second inductor L2, respectively.
[0051] In some embodiments, the electromagnetic drive module 200 includes a power detection circuit 330, which is used to detect the output power information of the electromagnetic drive module 200, and the main control module 300 is configured to control the output power of the electromagnetic drive module 200 according to the output power information.
[0052] In some embodiments, the atomizing device 10 further includes a temperature sensor (not shown in the figure). The temperature sensor can be used to detect the temperature around the heating element 100 and send temperature information to the main control module 300. The main control module 300 can adjust the output power of the electromagnetic drive module 200 according to the temperature information to achieve precise temperature control.
[0053] In some embodiments, the power detection circuit 330 includes a first resistor R1, the first end of the first resistor R1 is coupled to the voltage detection terminal PB13 of the main control module 300 and the first inductor L1, the second end of the first resistor R1 is grounded, and the main control module 300 is configured to collect the voltage difference across the first resistor R1 and control the output power of the electromagnetic drive module 200 according to the voltage difference.
[0054] In some embodiments, the voltage detection terminal PB13 can output the voltage difference across the first resistor R1. The main control module 300 collects the voltage difference output by the voltage detection terminal PB13 and calculates the total current and output power of the electromagnetic drive module 200 based on the resistance value of the first resistor R1. Then, it adjusts the switching time of the first inverter circuit 210 and the second inverter circuit 220 to control the output power of the electromagnetic heating.
[0055] In some embodiments, the main control module 300 can control the opening and closing times of the first switch 211, the second switch 221, the third switch 212, and the fourth switch 222 by controlling the first pulse signal, the second pulse signal, the third pulse signal, and the fourth pulse signal to adjust the output power of the electromagnetic drive module 200. Specifically, the main control module 300 can adjust the frequency and duty cycle of the first pulse signal, the second pulse signal, the third pulse signal, and the fourth pulse signal to control the opening and closing times of the first switch 211, the second switch 221, the third switch 212, and the fourth switch 222.
[0056] In some embodiments, the first resistor R1 is composed of multiple resistors connected in parallel to distribute power across multiple resistors, reduce the temperature rise of individual resistors, and prevent overheating damage. Specifically, the first resistor R1 is two resistors with a resistance of 20mR connected in parallel.
[0057] In some embodiments, the electromagnetic drive module 200 includes a second resistor R2. Multiple second resistors R2 are coupled between the first terminal of the first inductor L1 and the input terminal VBAT, between the first terminal of the first inductor L1 and the protective ground PGND, between the second terminal of the first inductor L1 and the input terminal VBAT, and between the second terminal of the first inductor L1 and the protective ground PGND. During the switching process between the first inverter circuit 210 and the second inverter circuit 220, the energy stored in the first inductor L1 can provide reverse current, and the second resistor R2 can prevent damage to the power supply and load due to current overshoot.
[0058] In some embodiments, the first terminal of the first inductor L1 is coupled to the first resistor R1 through the second resistor R2.
[0059] In some embodiments, a second resistor R2 is coupled between the first terminal of the first inductor L1 and the input terminal VBAT, and between the first terminal of the first inductor L1 and the protective ground PGND. The second terminal of the first inductor L1 is coupled to the first terminal of the second inductor L2, and a second resistor R2 is coupled between the second terminal of the second inductor L2 and the input terminal VBAT, and between the second terminal of the second inductor L2 and the protective ground PGND. Specifically, the second resistor R2 can be formed by multiple resistors connected in series. For example, the second resistor R2 can be formed by three resistors with a resistance of 150K connected in series.
[0060] In some embodiments, as shown in FIG2, the atomizing device 10 further includes a pneumatic detection module 500, which is coupled to the main control module 300. The pneumatic detection module 500 is used to detect changes in airflow within the atomizing device 10 and send a start signal. The main control module 300 is configured to control the electromagnetic drive module 200 to generate an alternating current according to the start signal. Specifically, when the user uses the atomizing device 10 for inhalation, the pneumatic detection module 500 detects changes in air pressure inside the atomizing device 10 and sends a start signal. The main control module 300 receives the start signal and controls the electromagnetic drive module 200 to start, causing the first inductor L1 to generate an alternating magnetic field. The heating element 100 located within the alternating magnetic field generates eddy currents, which heat the heating element 100, causing the atomizing matrix to atomize and form an aerosol. Specifically, the pneumatic detection module 500 includes a pneumatic sensor, which can detect changes in air pressure inside the atomizing device 10 and convert the air pressure signal into an electrical signal for output.
[0061] In some embodiments, the atomizing device 10 further includes a charging module 600 and a charging interface 700. The charging interface 700 and the charging module 600 are electrically connected, and the charging module 600 is electrically connected to the battery cell 400. An external power supply device can be connected to the charging interface 700 to charge and supply power to the battery cell 400 through the charging module 600. The charging module 600 is communicatively connected to the main control module 300. When an external power supply device is connected to the charging interface 700, the charging module 600 can send a charging request message to the main control module 300. The main control module 300 can receive the charging request message and control the charging module 600 to charge the battery cell 400.
[0062] The atomizing device provided in this application utilizes non-contact electromagnetic induction heating. By setting an electromagnetic drive module 200 to generate induced eddy currents to heat the heating element 100, the atomizing matrix is heated to form an aerosol, achieving non-contact and efficient heating. This results in precise temperature control and accurate heating within a defined range, making the heating more uniform and thorough, and improving the heating efficiency and service life of the atomizing device 10. By setting a dead time, the stability and reliability of the heating process are ensured, guaranteeing the safety of the atomizing device 10.
[0063] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this application.
Claims
1. An atomizing device, characterized in that, include: Heating element, used to heat the atomizing matrix to form an aerosol; The electromagnetic drive module includes a first inductor, which generates an alternating magnetic field to induce eddy currents in the heating element to heat the heating element; a main control module electrically connected to the electromagnetic drive module, which controls the electromagnetic drive module to convert direct current into alternating current, so that the alternating current passes through the first inductor to generate an alternating magnetic field; and a battery cell electrically connected to the main control module.
2. The atomizing device according to claim 1, characterized in that, The electromagnetic drive module includes a first inverter circuit and a second inverter circuit. The main control module is used to control the first inverter circuit to invert the DC current to obtain a positive half-wave signal of the AC current. The main control module is also used to control the second inverter circuit to invert the DC current to obtain a negative half-wave signal of the AC current.
3. The atomizing device according to claim 2, characterized in that, The main control module is configured to output a first control signal for driving the first inverter circuit, and the main control module is also configured to output a second control signal for driving the second inverter circuit. The first control signal and the second control signal have a dead time so that the first inverter circuit and the second inverter circuit cannot start at the same time.
4. The atomizing device according to claim 3, characterized in that, The dead time is 0.2 μs to 0.4 μs.
5. The atomizing device according to claim 3, characterized in that, The first inverter circuit includes a first switch and a third switch, and the second inverter circuit includes a second switch and a fourth switch. A first end of the first inductor is coupled between the first switch and the second switch, and a second end of the first inductor is coupled between the third switch and the fourth switch. The first control signal includes a first pulse signal and a third pulse signal, and the second control signal includes a second pulse signal and a fourth pulse signal. The first pulse signal, the second pulse signal, the third pulse signal, and the fourth pulse signal are respectively used to control the opening and closing states of the first switch, the second switch, the third switch, and the fourth switch.
6. The atomizing device according to claim 5, characterized in that, The electromagnetic drive module further includes a first capacitor bank, which is connected in series with the first inductor. The second end of the first inductor is coupled between the third switch and the fourth switch through the first capacitor bank.
7. The atomizing device according to claim 6, characterized in that, The electromagnetic drive module includes a second inductor, which is connected in series with the first capacitor bank. The first end of the second inductor is coupled to the first capacitor, and the second end of the second inductor is coupled between the third switch and the fourth switch.
8. The atomizing device according to claim 1, characterized in that, The electromagnetic drive module includes a second capacitor bank, with a first terminal of the second capacitor bank coupled to the input terminal of the electromagnetic drive module and a second terminal of the second capacitor bank coupled to protective ground.
9. The atomizing device according to claim 1, characterized in that, The atomizing device also includes a pneumatic detection module, which is coupled to the main control module. The pneumatic detection module is used to detect changes in airflow within the atomizing device and send a start signal. The main control module is configured to control the electromagnetic drive module to generate alternating current according to the start signal.
10. The atomizing device according to any one of claims 1-9, characterized in that, The electromagnetic drive module includes a power detection circuit, which includes a first resistor. The first end of the first resistor is coupled to the voltage detection terminal of the main control module and the first inductor. The second end of the first resistor is grounded. The main control module is configured to collect the voltage difference across the first resistor and control the output power of the electromagnetic drive module based on the voltage difference.