Electronic atomization device

Abstract

The application relates to an electronic atomization device, which comprises a heating body for atomizing an aerosol generating substrate, an electromagnetic heating circuit with inverse class E characteristics, a power supply circuit connected with the electromagnetic heating circuit with inverse class E characteristics and used for supplying power to the electromagnetic heating circuit with inverse class E characteristics, and a driving circuit connected with the electromagnetic heating circuit with inverse class E characteristics and used for generating a driving signal. The electromagnetic heating circuit with inverse class E characteristics can control the heating body to atomize the aerosol generating substrate according to the change of the driving signal, so that the failure rate of the electronic atomization device can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electronic atomization, in particular to an electronic atomization device. BACKGROUND

[0002] In the field of electronic atomization, the heating body in the electronic atomization device needs to release sufficient power so that the temperature of the aerosol generating substrate in the electronic atomization device reaches the target temperature, thereby meeting the user's demand for smoking.

[0003] Generally, the increased voltage is input to other control circuits after being increased by the boost circuit, so that the required power can be obtained.

[0004] However, when the output power is increased based on the connection of the boost circuit and other control circuits, the control complexity of the electronic atomization device is increased, resulting in a high failure rate of the electronic atomization device. SUMMARY

[0005] Therefore, it is necessary to provide an electronic atomization device capable of reducing the failure rate of the electronic atomization device.

[0006] In a first aspect, the present application provides an electronic atomization device for atomizing an aerosol generating substrate, comprising:

[0007] An electromagnetic heating circuit with reverse E class characteristics;

[0008] A power supply circuit connected to the electromagnetic heating circuit with reverse E class characteristics, for supplying power to the electromagnetic heating circuit with reverse E class characteristics;

[0009] A drive circuit connected to the electromagnetic heating circuit with reverse E class characteristics, for generating a drive signal;

[0010] The electromagnetic heating circuit with reverse E class characteristics controls the heating body to atomize the aerosol generating substrate according to the change of the drive signal.

[0011] In one embodiment, the electromagnetic heating circuit with reverse E class characteristics includes a switching circuit, a choke inductance L3, an inductor coil L1, a capacitor C1 and a capacitor C7. The choke inductance L3 is used to provide a stable DC source for the electromagnetic heating circuit with reverse E class characteristics. When the switching circuit is in the on state, the capacitor C1 and the inductor coil L1 form a first resonant circuit to provide energy for the heating body. When the switching circuit is in the off state, the inductor coil L1 and the capacitor C1 and the capacitor C7 together form a second resonant circuit to provide energy for the heating body.

[0012] In one of the embodiments, the switch circuit is a switch tube M1.

[0013] In one of the embodiments, the control end of the switch tube M1 is connected with the driving circuit, the input end of the switch tube M1 is connected with the first end of the inductor coil L1, the second end of the inductor coil L1 is connected with the power supply circuit through the choke inductor L3, the output end of the switch tube M1 is grounded, the first end of the capacitor C1 is grounded, and the second end of the capacitor C1 is connected with the common end of the choke inductor L3 and the inductor coil L1.

[0014] In one of the embodiments, when the driving signal changes from low level to high level, the switch tube M1 is turned on, the capacitor C7 is short-circuited, the capacitor C1 is discharged, and the inductor coil L1 is charged; if the driving signal changes from the high level to the low level, the switch tube M1 is turned off, the inductor coil L1 charges the capacitor C7, and after the charging of the capacitor C7 is completed, the inductor coil L1 charges the capacitor C1 to trigger the generation of a high-frequency alternating current signal; the high-frequency alternating current signal triggers the inductor coil L1 to generate a magnetic field, and the magnetic field makes the heating body heat up and atomize the aerosol generating substrate.

[0015] In one of the embodiments, the power supply circuit comprises a resistor R2 and a resistor R3; the first end of the resistor R2 is grounded, the second end of the resistor R2 and the first end of the resistor R3 are connected with a power supply, and the second end of the resistor R3 is connected with the electromagnetic heating circuit with inverse E-class characteristics.

[0016] In one of the embodiments, the power supply circuit further comprises a switch tube M2; the control end of the switch tube M2 is connected with the second end of the resistor R2, the input end of the switch tube M2 is connected with the power supply, and the output end of the switch tube M2 is connected with the first end of the resistor R3.

[0017] In one of the embodiments, the power supply circuit further comprises an energy storage filter circuit; the first end of the energy storage filter circuit is connected between the resistor R3 and the electromagnetic heating circuit with inverse E-class characteristics, and the second end of the energy storage filter circuit is grounded.

[0018] In one of the embodiments, the energy storage filter circuit comprises at least one capacitor.

[0019] In one of the embodiments, the energy storage filter circuit comprises a capacitor C2, a capacitor C3 and a capacitor C4; the capacitor C2, the capacitor C3 and the capacitor C4 are connected in parallel, one end of which is the first end of the energy storage filter circuit, and the other end of which is the second end of the energy storage filter circuit.

[0020] In one of the embodiments, the driving circuit comprises a signal source V4, a switch tube Q1 and a switch tube Q2; the signal source V4 is connected with the control end of the switch tube Q1 and the control end of the switch tube Q2, the input end of the switch tube Q1 is connected with a driving power supply, the output end of the switch tube Q1 is connected with the input end of the switch tube Q2 and the electromagnetic heating circuit with inverse E-class characteristics, and the output end of the switch tube Q2 is grounded.

[0021] In one of the embodiments, the driving circuit further comprises a resistor R5; the output end of the switch tube Q1 is connected with the electromagnetic heating circuit with inverse E-class characteristics through the resistor R5.

[0022] In one of the embodiments, the driving circuit further comprises a resistor R1 and a resistor R4; the signal source V4 is connected with the first end of the resistor R1 and the first end of the resistor R4, the second end of the resistor R1 is connected with the control end of the switch tube Q1, and the second end of the resistor R4 is connected with the control end of the switch tube Q2.

[0023] In one of the embodiments, the driving circuit further comprises a capacitor C5; the signal source V4 is connected with the first end of the resistor R1 and the first end of the resistor R4 through the capacitor C5.

[0024] In one of the embodiments, the driving circuit further comprises a resistor R6; the first end of the resistor R6 is grounded, and the second end of the resistor R6 is connected between the output end of the switch tube Q1 and the input end of the switch tube Q2.

[0025] The above electronic atomization device comprises a heating body for atomizing an aerosol generating substrate and an electromagnetic heating circuit with inverse E-class characteristics, wherein a power supply circuit is connected with the electromagnetic heating circuit with inverse E-class characteristics and used for supplying power to the electromagnetic heating circuit with inverse E-class characteristics, and a driving circuit is connected with the electromagnetic heating circuit with inverse E-class characteristics and used for generating a driving signal, so that the electromagnetic heating circuit with inverse E-class characteristics can control the heating body to atomize the aerosol generating substrate according to the change of the driving signal, the control principle is simple, and the failure rate of the electronic atomization device can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the electronic atomization device in one of the embodiments.

[0027] Figure 2 It is a principle schematic diagram of the electronic atomization device in one of the embodiments.

[0028] Figure 3 It is a principle schematic diagram of the electronic atomization device in one of the embodiments.

[0029] Figure 4 A schematic diagram of an electronic atomization device according to another embodiment;

[0030] Figure 5 A schematic diagram of an electronic atomization device according to another embodiment;

[0031] Figure 6 A schematic diagram of an electronic atomization device according to another embodiment;

[0032] Figure 7 A schematic diagram of an electronic atomization device according to another embodiment;

[0033] Figure 8 A schematic diagram of an electronic atomization device according to another embodiment;

[0034] Figure 9 A schematic diagram of an electronic atomization device according to another embodiment;

[0035] Figure 10 A schematic diagram of an electronic atomization device according to another embodiment;

[0036] Figure 11 A schematic diagram of an electronic atomization device according to another embodiment;

[0037] Figure 12 A schematic diagram of an electronic atomization device according to another embodiment;

[0038] Figure 13 A schematic diagram of an electronic atomization device according to another embodiment; DETAILED DESCRIPTION

[0039] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0040] As shown in Figure 1 A schematic diagram of an electronic atomization device according to another embodiment;

[0041] The inductor coil 102 can be a coil made of flat wire, round wire, electromagnetic wire, etc., and the coil support 104 can be with or without a slot. The aerosol generating substrate 106 can be in the form of a liquid, a gel, a paste, or a solid, etc., which can be set according to the actual application scenario. For example, when the aerosol generating substrate is a solid, it can be in the form of a crushed solid, a granular solid, a powdery solid, a strip-shaped solid, or a sheet-shaped solid, etc.

[0042] In Figure 1 Based on the schematic diagram shown, in one of the embodiments, the electronic atomization device includes a power supply circuit, a driving circuit, an electromagnetic heating circuit with inverse class-E characteristics, and a heating body for atomizing the aerosol generating substrate. The power supply circuit is connected with the electromagnetic heating circuit with inverse class-E characteristics, and is configured to supply power to the electromagnetic heating circuit with inverse class-E characteristics. The driving circuit is connected with the electromagnetic heating circuit with inverse class-E characteristics, and is configured to generate a driving signal. The electromagnetic heating circuit with inverse class-E characteristics controls the heating body to atomize the aerosol generating substrate according to the change of the driving signal.

[0043] The electromagnetic heating circuit with inverse class-E characteristics forms a cavity, and the heating body can be arranged in the cavity. In this way, the electromagnetic heating circuit with inverse class-E characteristics can provide energy for the heating body according to the change of the driving signal, so that the heating body can atomize the aerosol generating substrate after heating.

[0044] It can be understood that the specific positional relationship between the electromagnetic heating circuit with inverse class-E characteristics and the heating body can also be set according to the actual application scenario, and the present embodiment is not limited in this regard.

[0045] In order to better describe the implementation principle of the electronic atomization device controlling the heating of the heating body, in one of the embodiments, the electromagnetic heating circuit with inverse class-E characteristics includes a switching circuit, a choke inductor L3, an inductor coil L1, a capacitor C1, and a capacitor C7. The choke inductor L3 is configured to provide a stable DC source for the electromagnetic heating circuit with inverse class-E characteristics. When the switching circuit is in a conducting state, the capacitor C1 and the inductor coil L1 can form a first resonant circuit to provide energy for the heating body. When the switching circuit is in a non-conducting state, the inductor coil L1, the capacitor C1, and the capacitor C7 can jointly form a second resonant circuit to provide energy for the heating body. In addition, the capacitor C7 can also be used to protect the switching circuit when the switching circuit is in the non-conducting state.

[0046] In one of the embodiments, the switching circuit can be a switching tube M1, and specifically, as Figure 2As shown, a structural schematic diagram of an electronic atomization device is provided, wherein the control end of the switch tube M1 is connected with the driving circuit, the input end of the switch tube M1 is connected with the first end of the inductor coil L1, the second end of the inductor coil L1 is connected with the power supply circuit through the choke inductor L3, the output end of the switch tube M1 is grounded, the first end of the capacitor C1 is grounded, the second end of the capacitor C1 is connected with the common end of the choke inductor L3 and the inductor coil L1, the first end of the capacitor C7 is grounded, and the second end of the capacitor C7 is connected with the input end of the switch tube M1.

[0047] In the above, Figure 2 , RL is the coupling impedance part of the heating body in the circuit, and the heating body is located in the inductor coil L1. On the printed circuit board, the inductor coil L1 is connected with the M point connected with the switch tube M1 and the capacitor C7, and the capacitor C7 can be used to protect the switch tube M1, so that the voltage of the M point can be 0 at the moment when the switch tube M1 is closed. The switch tube M1 can be a field effect tube or a triode. If the switch tube M1 is a field effect tube, the control end of the switch tube M1 is the gate of the field effect tube, the input end of the switch tube M1 is the drain of the field effect tube, and the output end of the switch tube M1 is the source of the field effect tube.

[0048] Specifically, in the above, Figure 2 , the power supply circuit can be an electromagnetic heating circuit with inverse E class characteristics. After the driving circuit generates a driving signal, the electromagnetic heating circuit with inverse E class characteristics can control the heating body to atomize the aerosol generating substrate according to the change of the driving signal. Compared with the method of connecting a boost circuit and other control circuits to increase the output power, the electromagnetic heating circuit with inverse E class characteristics can control the heating body to atomize the aerosol generating substrate according to the change of the driving signal, and the control principle is simple, so that the failure rate of the electronic atomization device can be reduced. In the electronic atomization device, a controller can also be included. The driving circuit can generate a driving signal under the triggering of the controller. The controller can be a micro controller unit (MCU) or other types of chips used for control process, which is not limited in the embodiment.

[0049] Specifically, in the initial state, when the driving signal changes from low to high, the switch tube M1 is turned on, the capacitor C7 is short-circuited, and the capacitor C1 is discharged at the same time, at this time, the voltage of the M point is close to zero, the circuit current flows through the inductor L1, and the inductor L1 is charged, when the driving signal changes from high to low, the switch tube M1 is turned off, the current flowing through the inductor L1 does not change, the inductor L1 charges the capacitor C7, at this time, the potential of the M point is pulled up, and after the capacitor C7 is charged, the potential of the M point is higher than the potential of the point, that is, the non-ground potential of the capacitor C2, the inductor L1 charges the capacitor C1, and at this time, the potential of the M point decreases to trigger the generation of a high-frequency alternating current signal, and the high-frequency alternating current signal triggers the inductor L1 to generate a magnetic field, and the magnetic field makes the heating body heat and atomize the aerosol generating substrate.

[0050] The driving signal can be a signal obtained based on a pulse width modulation (PWM) technique, and the working state of the electromagnetic heating circuit with inverse E-class characteristics in a normal working process can be divided into the following four states.

[0051] State 1: from the beginning of the driving signal changing from low to high to the first half of the high level, C1 is charged and L1 is discharged;

[0052] State 2: in the second half of the high level of the driving signal, C1 is discharged and L1 is charged;

[0053] State 3: from the beginning of the driving signal changing from high to low to the first half of the low level, C1 is discharged and L1 is charged;

[0054] State 4: in the second half of the low level of the driving signal, C1 is charged and L1 is discharged.

[0055] Moreover, when the next high-level driving signal arrives, the switch tube M1 is turned on, and the capacitor C7 is just discharged, at this time, the potential of the M point just drops to zero, and through the alternation of the high level and the low level based on the driving signal, the electromagnetic heating circuit with inverse E-class characteristics can continuously generate a high-frequency alternating current signal, and the heating body can continuously heat to atomize the aerosol generating substrate.

[0056] Based on the schematic diagram shown in Figure 2 , in one of the embodiments, as shown in Figure 3 , a principle schematic diagram of an electronic atomization device is provided, the power supply circuit 202 includes a resistor R2 and a resistor R3, the first end of the resistor R2 is grounded, the second end of the resistor R2 and the first end of the resistor R3 are connected to the power supply V1, and the second end of the resistor R3 is connected to the electromagnetic heating circuit with inverse E-class characteristics, specifically, the second end of the resistor R3 is connected to the choke inductor L3.

[0057] In Figure 3 On the basis of the schematic diagram shown, in one embodiment, as Figure 4 shown, the power supply circuit 202 further includes a switch tube M2, the control end of the switch tube M2 is connected with the second end of the resistor R2, the input end of the switch tube M2 is connected with the power supply V1, and the output end of the switch tube M2 is connected with the first end of the resistor R3, so that the low power consumption of the power supply circuit in the standby state can be better realized through the switch tube M2.

[0058] Wherein, the positive end of the power supply V1 is connected with the input end of the switch tube M2, and the negative end of the power supply V1 is grounded; the switch tube M2 can be a field effect tube or a triode, in this embodiment, the switch tube M2 is a field effect tube, the control end of the switch tube M2 is the gate of the field effect tube, the input end of the switch tube M2 is the source of the field effect tube, and the output end of the switch tube M2 is the drain of the field effect tube.

[0059] It can be understood that the switch tube M2 can also be connected with the controller, so that the controller can control the on-off of the switch tube M2, so that the switch tube M2 can supply power for the electromagnetic heating circuit with inverse E class characteristics.

[0060] In Figure 4 On the basis of the schematic diagram shown, in one embodiment, the power supply circuit can further include an energy storage filter circuit 2021, the first end of the energy storage filter circuit 2021 is connected between the resistor R3 and the electromagnetic heating circuit with inverse E class characteristics, specifically, the first end of the energy storage filter circuit 2021 is connected between the resistor R3 and the choke inductance L3, and the second end of the filter assembly is grounded.

[0061] In one embodiment, the energy storage filter circuit includes at least one capacitor, specifically, as Figure 5 shown, the energy storage filter circuit 2021 can include a capacitor C2, a capacitor C3 and a capacitor C4, the capacitor C2, the capacitor C3 and the capacitor C4 are connected in parallel, one end of which is the first end of the energy storage filter circuit 2021, and the other end is the second end of the energy storage filter circuit 2021, so that better filtering effect can be achieved to realize wider filtering frequency.

[0062] In Figure 2 On the basis of the schematic diagram shown, in one embodiment, as Figure 6 shown, a schematic diagram of the principle of an electronic atomization device is provided, the driving circuit 204 includes a signal source V4, a switch tube Q1 and a switch tube Q2, the signal source V4 is connected with the control end of the switch tube Q1 and the control end of the switch tube Q2, the input end of the switch tube Q1 is connected with the driving power supply V2, the output end of the switch tube Q1 is connected with the input end of the switch tube Q2 and is connected with the electromagnetic heating circuit with inverse E class characteristics, and the output end of the switch tube Q2 is grounded.

[0063] Wherein, the output end of the switch tube Q1 is connected with the electromagnetic heating circuit with inverse E class characteristics, specifically, the output end of the switch tube Q1 is connected with the control end of the switch tube M1; the driving power supply V2 is used for supplying power for the driving circuit, one end of the driving power supply V2 is connected with the input end of the switch tube Q1, and the other end of the driving power supply V2 is grounded; the signal source V4 is used for providing the driving signal, one end of the signal source V4 is grounded, and the other end of the signal source V4 is connected with the control end of the switch tube Q1 and the control end of the switch tube Q2.

[0064] Wherein, the switch tube Q1 and the switch tube Q2 can be triodes or field effect tubes, in the embodiment, the switch tube Q1 and the switch tube Q2 are both triodes, the control end of the switch tube Q1 is the base of the triode, the input end of the switch tube Q1 is the collector of the triode, and the output end of the switch tube Q1 is the emitter of the triode; the control end of the switch tube Q2 is the base of the triode, the input end of the switch tube Q2 is the emitter of the triode, and the output end of the switch tube Q2 is the collector of the triode.

[0065] It can be understood that in the specific circuit implementation, the functions realized by the above driving circuit can also be realized by using a dedicated driving chip, and the embodiment is not limited.

[0066] On the basis of the schematic diagram shown in Figure 6 , in one of the embodiments, as shown in Figure 7 , a principle schematic diagram of an electronic atomization device is provided, the driving circuit 204 can further include a resistor R5, the output end of the switch tube Q1 is connected with the electromagnetic heating circuit with inverse E class characteristics through the resistor R5, specifically, the output end of the switch tube Q1 is connected with the control end of the switch tube M1 through the resistor R5, so that the switching speed of the switch tube M1 can be prevented from being too fast to cause the surrounding components to be broken down.

[0067] On the basis of the schematic diagram shown in Figure 7 , as shown in Figure 8 , the driving circuit 204 can further include a resistor R1 and a resistor R4, the signal source V4 is connected with the first end of the resistor R1 and the first end of the resistor R4, the second end of the resistor R1 is connected with the control end of the switch tube Q1, and the second end of the resistor R4 is connected with the control end of the switch tube Q2, so that the resistor R1 and the resistor R4 can play a role of current limiting to prevent the switch tube Q1 and the switch tube Q2 from being burned out by excessive current.

[0068] It can be understood that the signal source V4 can also be connected with a controller, so that the controller can trigger the signal source V4 to generate the driving signal, so that the electromagnetic heating circuit with inverse E class characteristics can control the heating body to atomize the aerosol generating substrate according to the change of the driving signal.

[0069] It can be understood that the driving signal can also be generated by the internal circuit of the controller, or by a separate signal source, which can be set according to the actual application scenario, and the embodiment is not limited specifically.

[0070] In Figure 8 Based on the schematic diagram shown in Figure 9 As shown, the driving circuit 204 can further include a capacitor C5, and the signal source V4 is connected to the first end of the resistor R1 and the first end of the resistor R4 through the capacitor C5, so that high-frequency interference can be filtered out, thereby improving the stability of the driving circuit.

[0071] In Figure 9 Based on the schematic diagram shown in Figure 10 As shown, the driving circuit 204 can further include a resistor R6, the first end of the resistor R6 is grounded, and the second end of the resistor R6 is connected between the output end of the switch tube Q1 and the input end of the switch tube Q2, so that the resistor R6 can prevent the current in the driving circuit from being too large and causing damage to the switch tube Q2.

[0072] In combination with the above, in one of the embodiments, as shown in Figure 11 A circuit principle schematic diagram of an electronic atomization device is provided, the electronic atomization device includes an electromagnetic heating circuit 206 with inverse E class characteristics, a power supply circuit 202 and a driving circuit 204, and the specific content of the electromagnetic heating circuit 206 with inverse E class characteristics, the power supply circuit 202 and the driving circuit 204 can be referred to the foregoing description for adaptation, and will not be described here.

[0073] In combination with the above, in one of the embodiments, as shown in Figure 12 A structural block diagram of an electronic atomization device is provided, the electronic atomization device can include a current sampling module 1202, a voltage sampling module 1204, an MCU 1206, an electromagnetic heating circuit 206 with inverse E class characteristics, a power supply circuit 202 and a driving circuit 204, wherein the power supply circuit 202 is used to power the current sampling module 1202, the voltage sampling module 1204 and the electromagnetic heating circuit 206 with inverse E class characteristics.

[0074] Specifically, the current sampling module can obtain a current signal from the electromagnetic heating circuit 206 with inverse E class characteristics, the voltage sampling module can obtain a voltage signal from the electromagnetic heating circuit 206 with inverse E class characteristics, and the MCU can determine the power output by the electromagnetic heating circuit 206 with inverse E class characteristics based on the voltage signal and the current signal. Based on the power, the MCU can trigger the driving circuit to generate a driving signal, and the electromagnetic heating circuit 206 with inverse E class characteristics can adjust the output power according to the change of the triggered driving signal.

[0075] In one embodiment, if the capacitance value of the capacitor C7, the capacitance value of the capacitor C1, the inductance value of the inductor L1, and the impedance value of the RL in the electromagnetic heating circuit with inverse E class characteristics are fixed, the output power of the electromagnetic heating circuit with inverse E class characteristics can be adjusted by adjusting the driving frequency of the driving signal. For example, if the driving frequency of the driving signal is closer to the oscillation frequency of the electromagnetic heating circuit with inverse E class characteristics, the output power of the electromagnetic heating circuit with inverse E class characteristics can be increased. If the driving frequency of the driving signal is farther away from the oscillation frequency of the electromagnetic heating circuit with inverse E class characteristics, the output power of the electromagnetic heating circuit with inverse E class characteristics can be reduced. The specific setting can be determined according to the actual application scenario, which is not limited in the present embodiment.

[0076] In another embodiment, if the driving frequency of the driving signal is fixed, the output power of the electromagnetic heating circuit with inverse E class characteristics can be adjusted by adjusting the capacitance value of the capacitor C1, the inductance value of the inductor L1, the impedance value of the RL, and the capacitance value of the capacitor C7.

[0077] The capacitance value of the capacitor C1 satisfies the following formula: C1 = (π 4 + 16) / (2π (π 2 + 4)) x P O / (ωVcc 2 ), the impedance value of the RL satisfies the following formula: RL ≈ 1.7337 x Vcc 2 / P O , the inductance value of the inductor L1 satisfies the following formula: L1 ≈ Vcc 2 / (P O x πω), Vcc is the input power, i.e. the output voltage of the power supply V1, P O is the power required by the electromagnetic heating circuit with inverse E class characteristics, and ω is the oscillation frequency of the electromagnetic heating circuit with inverse E class characteristics.

[0078] The capacitance value of the capacitor C7 needs to be adjusted according to the output parameters of the switch tube (such as the input capacitance, output capacitance or capacitance effect of the switch tube) and the impedance parameters of the PCB, and the capacitance value of the capacitor C7 also needs to be derived by ideal state and adjusted according to the high frequency parameter change of the element (such as the change of the capacitive reactance characteristic of the inductor L1, the change of the internal resistance, and the change of the stray inductance and capacitance of the PCB).

[0079] In order to verify the feasibility of the circuit design in the electronic atomization device, a simulation circuit can be designed based on the schematic diagram shown in Figure 11 , as shown in Figure 13 , a simulation result schematic diagram is provided, it can be seen that the M point voltage waveform does not overlap with the switch tube M1 current waveform and the choke inductance L3 current waveform.

[0080] Wherein, before the power of the electromagnetic heating circuit with reverse E class characteristics is adjusted, the input power pin can be obtained based on the measured voltage between the choke inductance L3 and the inductive coil L1 and the current output based on the supply voltage V1, after the power of the electromagnetic heating circuit with reverse E class characteristics is adjusted, the output power pout can be obtained based on the measured voltage at the first end of the choke inductance L3 and the current flowing through RL, therefore, the circuit power pout / pin can be obtained about 96%.

[0081] Therefore, based on Figure 11 The simulation circuit designed based on the schematic diagram shown in the figure can achieve a circuit efficiency of more than 90%, and the specific value of the circuit efficiency can be set according to the actual application scenario.

[0082] It should be noted that, in an ideal case, the peak voltage Vd of the conventional E class amplifier is approximately 3.5620Vdc, and the peak voltage Vd of the reverse E class power amplifier is approximately 2.8621Vdc, which is about 20% lower than the peak voltage of the conventional E class amplifier, so the requirement for the withstand voltage of the switch tube can be reduced, and the drain parasitic inductance (for example, RL in the figure) of the switch tube can be used as part of the oscillation inductance L1, which reduces the required inductance compared with the conventional E class amplifier. Figure 2

[0083] In combination with the above, the circuit device in the electronic atomization device provided by the present application has less faults and is simple to control, and the voltage and current waveforms do not overlap each other by adjusting the circuit parameters, the circuit only has device impedance loss, which greatly improves the circuit efficiency, the atomization speed is fast, and the user's smoking effect can be improved.

[0084] The technical features of the above embodiments can be combined in any way, and to make the description concise, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0085] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.​

Claims

1. An electronic atomization device comprising a heat generator for atomizing an aerosol generating substrate, characterized in that, include: Electromagnetic heating circuit with inverse Class E characteristics; A power supply circuit is connected to the electromagnetic heating circuit with inverse E-class characteristics and is used to supply power to the electromagnetic heating circuit with inverse E-class characteristics. A driving circuit, connected to the electromagnetic heating circuit containing inverse E-class characteristics, is used to generate a driving signal; The electromagnetic heating circuit with inverse E-class characteristics controls the heating element to atomize the aerosol generating matrix according to the change of the driving signal; The electromagnetic heating circuit with inverse Class E characteristics includes a switching circuit, a choke inductor L3, an inductor L1, a capacitor C1, and a capacitor C7. The choke inductor L3 provides a stable DC power source for the electromagnetic heating circuit with inverse Class E characteristics. When the driving signal changes from low to high, the switching circuit is in the ON state, the capacitor C7 is short-circuited, the capacitor C1 discharges, and the inductor L1 charges. The capacitor C1 and the inductor L1 form a first resonant circuit to provide energy to the heating element. When the driving signal changes from high to low, the switching circuit is in the OFF state, the inductor L1 charges the capacitor C7, and after the capacitor C7 finishes charging, the inductor L1 charges the capacitor C1. The inductor L1, the capacitor C1, and the capacitor C7 together form a second resonant circuit to provide energy to the heating element, thereby generating a high-frequency AC signal based on the alternation of high and low levels of the driving signal. The high-frequency AC signal triggers the inductor L1 to generate a magnetic field, which causes the heating element to heat up and atomize the aerosol to generate a matrix.

2. The electronic atomizing device of claim 1, wherein, The switching circuit is a switching transistor M1.

3. The electronic atomizing device of claim 2, wherein, The control terminal of the switching transistor M1 is connected to the driving circuit. The input terminal of the switching transistor M1 is connected to the first terminal of the inductor L1. The second terminal of the inductor L1 is connected to the power supply circuit through the choke inductor L3. The output terminal of the switching transistor M1 is grounded. The first terminal of the capacitor C1 is grounded. The second terminal of the capacitor C1 is connected to the common terminal of the choke inductor L3 and the inductor L1. The first terminal of the capacitor C7 is grounded. The second terminal of the capacitor C7 is connected to the input terminal of the switching transistor M1.

4. The electronic atomizing device of claim 1, wherein, The power supply circuit includes resistors R2 and R3; The first end of resistor R2 is grounded, the second end of resistor R2 is connected to the first end of resistor R3, and the second end of resistor R3 is connected to the electromagnetic heating circuit with inverse Class E characteristics.

5. The electronic atomizing device of claim 4, wherein, The power supply circuit also includes a switching transistor M2; the control terminal of the switching transistor M2 is connected to the second terminal of the resistor R2, the input terminal of the switching transistor M2 is connected to the power supply, and the output terminal of the switching transistor M2 is connected to the first terminal of the resistor R3.

6. The electronic atomizing device of claim 5, wherein, The power supply circuit also includes an energy storage and filtering circuit; the first end of the energy storage and filtering circuit is connected between the resistor R3 and the electromagnetic heating circuit with inverse Class E characteristics, and the second end of the energy storage and filtering circuit is grounded.

7. The electronic atomizing device of claim 6, wherein, The energy storage filter circuit includes at least one capacitor.

8. The electronic atomizing device of claim 7, wherein, The energy storage filter circuit includes a capacitor C2, a capacitor C3 and a capacitor C4, one end of which is connected to the first end of the energy storage filter circuit and the other end of which is connected to the second end of the energy storage filter circuit.

9. The electronic atomizing device of claim 1, wherein, The driving circuit includes a signal source V4, a switch tube Q1 and a switch tube Q2. The signal source V4 is connected to the control end of the switch tube Q1 and the control end of the switch tube Q2, the input end of the switch tube Q1 is connected to a driving power source, the output end of the switch tube Q1 is connected to the input end of the switch tube Q2 and the electromagnetic heating circuit with inverse E-class characteristics, and the output end of the switch tube Q2 is grounded.

10. The electronic atomizing device of claim 9, wherein, The driving circuit further includes a resistor R5, and the output end of the switch tube Q1 is connected to the electromagnetic heating circuit with inverse E-class characteristics through the resistor R5.

11. The electronic atomizing device of claim 10, wherein, The driving circuit further includes a resistor R1 and a resistor R4. The signal source V4 is connected to the first end of the resistor R1 and the first end of the resistor R4, the second end of the resistor R1 is connected to the control end of the switch tube Q1, and the second end of the resistor R4 is connected to the control end of the switch tube Q2.

12. The electronic atomizing device of claim 11, wherein, The driving circuit further includes a capacitor C5, and the signal source V4 is connected to the first end of the resistor R1 and the first end of the resistor R4 through the capacitor C5.

13. The electronic atomizing device of claim 12, wherein, The driving circuit further includes a resistor R6. The first end of the resistor R6 is grounded, and the second end of the resistor R6 is connected between the output end of the switch tube Q1 and the input end of the switch tube Q2.

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