Heating control circuit and electromagnetic heating smoking set

Abstract

The invention relates to a heating control circuit and an electromagnetic heating smoking set, and the circuit comprises a driving chip U1 and a full-bridge driving circuit: the driving chip U1 is connected with a power supply, and is used for generating a driving signal, and outputting the driving signal to the full-bridge driving circuit; the full-bridge driving circuit comprises an upper half-bridge circuit and a lower half-bridge circuit, the input ends of control signals of the upper half-bridge circuit and the lower half-bridge circuit are respectively connected with an output pin of the driving chip U1, and the full-bridge driving circuit is used for receiving driving signals and outputting the driving signals to the control ends of the upper half-bridge circuit and the lower half-bridge circuit; an output pin of the driving chip U1 comprises an HO end and an LO end of the driving chip U1, a VCC end of the driving chip U1 is connected in parallel with a VB end of the driving chip U1 and a power supply, and a COM end of the driving chip U1 and a VS end of the driving chip U1 are respectively connected with a grounding end GND. And a single half-bridge driving chip can control the full-bridge circuit to normally carry out an alternating current inversion process.

Description

Technical Field

[0001] The present invention relates to the technical field of control circuits, and in particular to a heating control circuit and an electromagnetic heating smoking device. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Electromagnetic heating smoking utensils use electromagnetic induction heating technology to generate an alternating magnetic field through high-frequency and high-voltage currents that change rapidly, which in turn generates eddy currents on the induction body, and uses the heat energy generated by the eddy currents to heat the cigarette cartridges. Unlike traditional combustion smoking utensils, the temperature of heating smoking utensils is lower than the ignition point of general materials, which results in fewer harmful substances produced by combustion and is less likely to destroy the aromatic substances in tobacco.

[0004] Electromagnetic heating smoking devices generally use a common full-bridge drive circuit for heating control, and the traditional full-bridge drive circuit is usually composed of four MOS tubes, which serve as the high-side and low-side switches of the circuit. In order to effectively control these four MOS tubes, two half-bridge drive chips are required, each chip is responsible for controlling two MOS tubes. Although this solution can realize the basic functions of the full-bridge drive circuit, the use of two half-bridge drive chips means that more components are needed, which will increase the size and cost of the electromagnetic heating smoking device. In addition, due to the use of more components, the circuit will generate more energy consumption during operation, thus affecting the performance of the electromagnetic heating smoking device. Summary of the invention

[0005] In order to solve the technical problems existing in the above-mentioned background technology, the present invention provides a heating control circuit and an electromagnetic heating smoking device. By optimizing the general half-bridge drive circuit, a single half-bridge drive chip can control the full-bridge drive circuit to perform a normal AC inversion process through one pulse. Compared with the traditional full-bridge drive circuit, the number of components is reduced by more than half, which is suitable for heating smoking device products. At the same time, the circuit also saves PWM channel resources, which is conducive to the hardware design of portable and compact smoking device products.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A first aspect of the present invention provides a heating control circuit, comprising a driving chip U1 and a full-bridge driving circuit: the driving chip U1 is connected to a power supply, and is used to generate a driving signal and output it to the full-bridge driving circuit;

[0008] The full-bridge driving circuit includes an upper half-bridge circuit and a lower half-bridge circuit. The control signal input terminals of the upper half-bridge circuit and the lower half-bridge circuit are respectively connected to the output pins of the driving chip U1 for receiving driving signals and outputting them to corresponding control terminals.

[0009] The output pins of the driver chip U1 include the HO and LO terminals of the driver chip U1 . The VCC terminal of the driver chip U1 is connected in parallel to the VB terminal of the driver chip U1 and the power supply. The COM terminal of the driver chip U1 and the VS terminal of the driver chip U1 are respectively connected to the ground terminal GND.

[0010] Furthermore, the driver chip U1 is a single half-bridge driver chip.

[0011] Furthermore, the power supply voltage at the VCC terminal is greater than the input voltage of the full-bridge driving circuit.

[0012] Furthermore, a diode D1 is included, and the diode D1 is located between the power supply and the VB terminal of the driving chip U1.

[0013] Furthermore, it also includes a first resistor R1 and a second resistor R2, the first resistor R1 is located between the HO terminal and the upper half-bridge circuit, and the second resistor R2 is located between the LO terminal and the lower half-bridge circuit.

[0014] Furthermore, the upper half-bridge circuit includes a first MOS tube switch and a second MOS tube switch, and the lower half-bridge circuit includes a third MOS tube switch and a fourth MOS tube switch.

[0015] Further, the gate of the first MOS tube switch and the gate of the fourth MOS tube switch are connected to the HO terminal, the gate of the second MOS tube switch and the gate of the third MOS tube switch are connected to the LO terminal, the source of the first MOS tube switch and the source of the second MOS tube switch are connected to the battery power supply, the drain of the first MOS tube switch and the drain of the second MOS tube switch are connected in parallel to the source of the third MOS tube switch and the source of the fourth MOS tube switch, and the drain of the third MOS tube switch and the drain of the fourth MOS tube switch are connected to the ground terminal GND.

[0016] Furthermore, the full-bridge driving circuit further includes a capacitor C1 and an inductor L1, and the drain of the first MOS tube switch and the source of the third MOS tube switch are connected to the drain of the second MOS tube switch and the source of the fourth MOS tube switch through the capacitor C1 and the inductor L1.

[0017] Further, when the HO terminal outputs a high level, the first MOS tube switch and the fourth MOS tube switch are turned on; when the HO terminal outputs a low level, the first MOS tube switch and the fourth MOS tube switch are turned off; when the LO terminal outputs a high level, the second MOS tube switch and the third MOS tube switch are turned on; when the LO terminal outputs a low level, the second MOS tube switch and the third MOS tube switch are turned off.

[0018] The second aspect of the present invention provides an electromagnetic heating smoking device, including an aerosol generating device and an aerosol generating product, the aerosol generating device including a power supply, a heating chamber, an induction heating body, an induction transmitter and a controller: the heating chamber accommodates the aerosol generating product when working, the aerosol generating product has a receptor as a heating body, the induction transmitter includes an induction coil with a magnetic field axis, the induction coil is arranged to surround at least a portion of the heating chamber and the receptor, the power supply is connected to the induction coil and is configured to provide a high-frequency current to the induction coil under the control of the controller, and the controller has a heating control circuit.

[0019] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0020] 1. A single half-bridge driver chip can control the full-bridge driver circuit to perform normal AC inversion through one pulse. Compared with the traditional full-bridge driver circuit, the number of components is reduced by more than half, which meets the heating control requirements of heated tobacco products and can reduce the size of heated tobacco products. At the same time, it also saves PWM channel resources, which is conducive to the hardware design of portable and compact tobacco products.

[0021] 2. When the HO and LO terminals output drive signals, the heating control circuit can control the full-bridge drive circuit for AC inversion without setting a bootstrap capacitor. Compared with the traditional full-bridge drive circuit, fewer components are required to achieve the same function, saving circuit costs while reducing the layout space requirements for components. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0023] Figure 1 is a circuit diagram of a heating control circuit provided by one or more embodiments of the present invention;

[0024] Figure 2 is a schematic diagram of the timing output of a heating control circuit provided by one or more embodiments of the present invention;

[0025] Figure 3 is an application circuit diagram of a half-bridge driver chip provided by one or more embodiments of the present invention;

[0026] Figure 4 is an internal circuit diagram of a half-bridge driver chip provided by one or more embodiments of the present invention;

[0027] Figure 5 It is a cross-sectional view of an aerosol generating device in an electromagnetic heating smoking device provided by one or more embodiments of the present invention.

[0028] In the figure: 1 induction coil, 2 receptor, 3 device body, 4 heating chamber. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0031] Terminology explanation:

[0032] Electromagnetic heating smoking devices use electromagnetic induction heating technology. They generate an alternating magnetic field through high-frequency and high-voltage currents that change rapidly, and then generate eddy currents on the metal induction body, and use the heat energy generated by the eddy currents to heat the cigarette cartridges. Specifically, when a high-frequency and high-voltage current passes through the induction coil, a high-speed alternating magnetic field is generated. When a cigarette cartridge containing iron (or other metals) is placed in this magnetic field, the metal part of the cigarette cartridge will cut the alternating magnetic lines of force, thereby generating alternating currents (i.e. eddy currents) inside the metal. Eddy currents cause the carriers inside the metal to move irregularly at high speed, and the carriers collide and rub against atoms to generate heat energy, thereby heating the cigarette cartridge and evaporating an aerosol containing aromatic substances.

[0033] Bootstrap capacitor is a capacitor that plays a special role in the circuit. It mainly uses the characteristic that the voltage across the capacitor cannot change suddenly to achieve voltage bootstrapping or potential bootstrapping through the charging and discharging process. Bootstrap capacitors are usually used in conjunction with diodes, switching circuits and other components to form a bootstrap circuit (also called a boost circuit), which can achieve voltage increase through energy conversion within the circuit without adding an external power supply.

[0034] The following embodiments provide a heating control circuit and an electromagnetic heating smoking device. By optimizing a general half-bridge drive circuit, a single half-bridge drive chip can control the full-bridge drive circuit to normally perform the AC inversion process through one pulse. Compared with the traditional full-bridge drive circuit, the number of components is reduced by more than half. Although the circuit of this structure is not suitable for high-power electromagnetic induction heating products such as crucible furnaces and rice cookers, it can be implemented on small heating smoking device products. At the same time, the circuit saves PWM channel resources, which is conducive to the hardware design of portable and compact smoking device products.

[0035] Embodiment 1:

[0036] like Figure 1As shown, the heating control circuit includes: a driving chip U1 and a full-bridge driving circuit.

[0037] The driver chip U1 is connected to a power supply, and can be used to generate a drive signal and output the drive signal to the full-bridge drive circuit.

[0038] The full-bridge drive circuit includes an upper half-bridge circuit and a lower half-bridge circuit. The control signal input ends of the upper half-bridge circuit and the lower half-bridge circuit are respectively connected to the output pins of the drive chip U1 for receiving drive signals and outputting drive signals to the control ends of the upper half-bridge circuit and the lower half-bridge circuit.

[0039] The output pins include the HO terminal and the LO terminal of the driver chip U1, the VCC terminal of the driver chip U1 is connected in parallel to the VB terminal of the driver chip U1 and the power supply, and the COM terminal of the driver chip U1 and the VS terminal of the driver chip U1 are respectively connected to the ground terminal GND; when the HO terminal and the LO terminal output driving signals, the control circuit can control the full-bridge drive circuit to perform AC inversion without setting a bootstrap capacitor.

[0040] The driver chip U1 may be a half-bridge driver chip, for example, a half-bridge driver chip IR2104, IR2101, etc.

[0041] Furthermore, the control circuit further includes a diode D1 , which is arranged between the power supply and the VB terminal of the driving chip U1 .

[0042] The model of diode D1 may be BZT52C5V6S.

[0043] The control circuit further includes a first resistor R1 and a second resistor R2. The first resistor R1 is arranged between the HO terminal and the upper half-bridge circuit, and the second resistor R2 is arranged between the LO terminal and the lower half-bridge circuit.

[0044] The first resistor R1 and the second resistor R2 may have the same resistance value.

[0045] The upper half-bridge circuit includes a first MOS transistor switch Q1 and a second MOS transistor switch Q3 , and the lower half-bridge circuit includes a third MOS transistor switch Q2 and a fourth MOS transistor switch Q4 .

[0046] The gate of the first MOS switch Q1 and the gate of the fourth MOS switch Q4 are connected to the HO terminal, the gate of the second MOS switch Q3 and the gate of the third MOS switch Q2 are connected to the LO terminal, the source of the first MOS switch Q1 and the source of the second MOS switch Q3 are connected to the battery power source, the drain of the first MOS switch Q1 and the drain of the second MOS switch Q3 are connected in parallel to the source of the third MOS switch Q2 and the source of the fourth MOS switch Q4, and the drain of the third MOS switch Q2 and the drain of the fourth MOS switch Q4 are connected to the ground terminal GND.

[0047] It can be understood that the gates of the first MOS switch Q1 and the fourth MOS switch Q4 are connected to the control signal of the CNT1 channel, and the gates of the second MOS switch Q3 and the third MOS switch Q2 are connected to the control signal of the CNT2 channel.

[0048] Exemplarily, the MOS switch may be an NMOS switch, that is, an N-type metal oxide semiconductor field effect transistor.

[0049] The full-bridge driving circuit further includes a capacitor C1 and an inductor L1. The drain of the first MOS switch Q1 and the source of the third MOS switch Q2 are connected to the drain of the second MOS switch Q3 and the source of the fourth MOS switch Q4 via the capacitor C1 and the inductor L1.

[0050] When the HO terminal outputs a high level, the first MOS transistor switch Q1 and the fourth MOS transistor switch Q4 are turned on; when the HO terminal outputs a low level, the first MOS transistor switch Q1 and the fourth MOS transistor switch Q4 are turned off;

[0051] When LO outputs a high level, the second MOS switch Q3 and the third MOS switch Q2 are turned on; when LO outputs a low level, the second MOS switch Q3 and the third MOS switch Q2 are turned off.

[0052] It can be understood that the control circuit provided in this embodiment eliminates the bootstrap capacitor, thereby disconnecting the VS pin from the bridge circuit and connecting it to GND. Figure 1 From the circuit in the figure, we can know that when HO outputs a high level, since the power supply of the half-bridge chip is 9-12V, the voltage is higher than the highest voltage in the bridge circuit. At this time, the gate circuit voltage of the NMOS tube Q1 is higher than the S-pole voltage, Q1 is turned on, and after turning on, the S-pole voltage rises to the battery voltage of 4.2V. At this time, the VGS voltage difference is greater than 5V, and Q1 can still be turned on; for Q4, when HO outputs a high level, the S-pole voltage is grounded. Therefore, VGS is always the effective turn-on voltage. When HO outputs a low level, since VS is grounded at this time, the HO output voltage is 0V, so Q1 and Q4 can be effectively turned off.

[0053] Based on a similar concept, when LO outputs a high level, the on and off of Q2 and Q3 are similar to those of Q1 and Q4. At this time, the circuit output of LO is the same as that of HO configuration, and the same function can be achieved to control the on and off of the NMOS of another pair of bridge arms. The timing is as follows: Figure 2 shown.

[0054] That is, the control circuit provided in this embodiment can drive the normal operation of the full-bridge drive circuit with only a single half-bridge drive chip U1, and there is no need to add other half-bridge drive chips to control the newly added half-bridge circuit, which saves circuit costs and reduces the layout space requirements for components.

[0055] To further embody the inventive concept, reference may be made to the following implementation methods of the prior art.

[0056] like Figure 3 and Figure 4 As shown, Figure 3 This is a typical application circuit diagram of a half-bridge driver chip. Figure 4 The half-bridge driver chip can control the two NMOS tubes of the half-bridge circuit, where the upper arm NMOS tube can be connected to the V S With V B The bootstrap capacitor between the two transistors is used to boost the voltage, so that when the upper arm NMOS switch tube needs a high voltage to turn on, the gate voltage can exceed the S-pole voltage to keep the NMOS turned on.

[0057] It should be noted that Figure 3 Refer to the pin assignments for the correct pin configuration. Figure 3 Only electrical connections are shown.

[0058] Through circuit analysis, we can know that the NMOS tube realizes the output of positive and negative pulses through the push-pull circuit. When the upper arm NMOS is turned off, the voltage of VS is connected to HO, and the voltage is not 0 at this time. Therefore, the voltage of HO of the half-bridge driver chip when turning off the NMOS tube is not enough to turn off the NMOS of the lower arm. The reason is that the S pole voltage of the NMOS of the lower arm is GND. At this time, the VGS voltage is much larger than the threshold voltage and is still in the voltage state of effectively turning on the NMOS tube. Similarly, the LO pin of the half-bridge driver chip, that is, the low-arm pulse output, cannot control the conduction of the high-arm NMOS because it cannot obtain an S voltage higher than the upper arm NMOS. Therefore, the typical application circuit of the half-bridge driver chip can only control the two NMOS of a half bridge. And because the full-bridge driver circuit needs to control the conduction of a pair of NMOS when it is turned on, Figure 3 The driving circuit principle in the invention cannot realize the control of the full-bridge driving circuit with a single half-bridge driving chip.

[0059] Therefore, the heating control circuit provided in this embodiment optimizes and modifies the existing general half-bridge drive chip and half-bridge drive circuit, so that one half-bridge chip can normally drive the full-bridge electromagnetic induction / AC inverter circuit, saving circuit costs while reducing the layout space requirements for components.

[0060] Embodiment 2:

[0061] This embodiment provides an electromagnetic induction heating smoking device, and the electromagnetic induction heating smoking device can apply the heating control circuit of the first embodiment.

[0062] It can be understood that the electromagnetic induction heating smoking device is an aerosol generating system, including an aerosol generating device and an aerosol generating product, wherein the susceptor 2 is arranged inside the heating chamber 4, and at least a part of the susceptor 2 is inserted into the aerosol generating product during operation.

[0063] Among them, the aerosol-generating article is a smoking article, which includes an aerosol-forming substrate, which generates an aerosol for inhalation by heating.

[0064] Preferably, the aerosol-forming substrate is a solid aerosol-forming substrate.The aerosol-forming substrate may comprise both solid and liquid components.

[0065] Preferably, the aerosol-forming substrate comprises nicotine. In some preferred embodiments, the aerosol-forming substrate comprises tobacco. For example, the aerosol-forming material may be formed from a sheet of homogenized tobacco.

[0066] Alternatively or additionally, the aerosol-forming substrate may comprise a non-tobacco-containing aerosol-forming material. For example, the aerosol-forming material may be a sheet comprising nicotine salt and an aerosol former.

[0067] If the aerosol-forming substrate is a solid aerosol-forming substrate, the solid aerosol-forming substrate may comprise one or more of a powder, granules, pellets, fragments, strips, rods or sheets containing one or more of herb leaves, tobacco leaves, tobacco ribs, flat tobacco and homogenized tobacco.

[0068] Optionally, the solid aerosol-forming substrate may contain tobacco volatile aroma compounds or non-tobacco volatile aroma compounds that are released when the solid aerosol-forming substrate is heated. The solid aerosol-forming substrate may also contain one or more capsules that include, for example, additional tobacco volatile aroma compounds or non-tobacco volatile aroma compounds, and such capsules may melt during the heating of the solid aerosol-forming substrate.

[0069] Optionally, the solid aerosol-forming substrate can be disposed on or embedded in a heat-stable carrier. The carrier can be in the form of a powder, granules, pellets, fragments, strips, strips or sheets. The solid aerosol-forming substrate can be arranged on the surface of the carrier in the form of, for example, a sheet, foam, gel or slurry. The solid aerosol-forming substrate can be placed on the entire surface of the carrier, or alternatively, can be arranged in a pattern to provide uneven fragrance delivery during use.

[0070] like Figure 5The aerosol generating device in one embodiment shown comprises a power source, a heating chamber 4, an induction heating body, an induction emitter and a controller.

[0071] The power supply and the heating control circuit in the first embodiment are arranged in the device body 3 of the aerosol generating device. The heating chamber 4 is used to accommodate the aerosol generating product when working, and the aerosol generating product has a susceptor 2 as a heating body. The induction transmitter includes an induction coil 1 having a magnetic field axis, the induction coil 1 is arranged to surround at least a part of the heating chamber 4 and the susceptor 2, and the power supply is connected to the induction coil 1 and is configured to provide a high-frequency current to the induction coil under the control of the controller.

[0072] During operation, the aerosol generating product with the built-in receptor 2 is inserted into the heating chamber 4, and the power supply provides high-frequency current induction to the induction coil 1, thereby generating an induced electric field and forming an induced current in the receptor 2 as a heating body. The heating body heats the aerosol generating product after heating.

[0073] It can be understood that the heating control circuit provided in this embodiment not only further reduces the volume of the aerosol generating device, but also based on the full-bridge drive circuit, can output a smooth voltage waveform, reduce harmonics, improve output quality, and can more stably obtain the required heating target value.

[0074] Furthermore, since the full-bridge drive circuit has a combination of four power switches, it provides better voltage control capabilities. This enables the aerosol generating device to be precisely controlled over a wider temperature range to meet the heating needs of different users. Accurate voltage control helps achieve a more uniform and stable heating effect, improving the heating efficiency and service life of the aerosol generating device. In addition, the design of the full-bridge drive circuit has high flexibility and scalability, and can be adjusted and optimized according to different application requirements. This helps promote and apply aerosol generating devices in different markets and application scenarios.

[0075] It should be noted that the specific process of installing the heating control circuit in the aerosol generating device is well known to those skilled in the art and will not be elaborated herein.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heating control circuit, characterized in that: It includes a driving chip U1 and a full-bridge driving circuit: the driving chip U1 is connected to a power supply, and is used to generate a driving signal and output it to the full-bridge driving circuit; The full-bridge driving circuit includes an upper half-bridge circuit and a lower half-bridge circuit. The control signal input terminals of the upper half-bridge circuit and the lower half-bridge circuit are respectively connected to the output pins of the driving chip U1 for receiving driving signals and outputting them to corresponding control terminals. The output pins of the driver chip U1 include the HO and LO terminals of the driver chip U1 . The VCC terminal of the driver chip U1 is connected in parallel to the VB terminal of the driver chip U1 and the power supply. The COM terminal of the driver chip U1 and the VS terminal of the driver chip U1 are respectively connected to the ground terminal GND.

2. A heating control circuit as claimed in claim 1, characterized in that: The driver chip U1 is a single half-bridge driver chip.

3. A heating control circuit as claimed in claim 1, characterized in that: The power supply voltage at the VCC terminal is greater than the input voltage of the full-bridge drive circuit.

4. A heating control circuit as claimed in claim 1, characterized in that: A diode D1 is also included, and the diode D1 is located between the power supply and the VB terminal of the driving chip U1.

5. A heating control circuit as claimed in claim 1, characterized in that: The circuit also includes a first resistor R1 and a second resistor R2. The first resistor R1 is located between the HO terminal and the upper half-bridge circuit, and the second resistor R2 is located between the LO terminal and the lower half-bridge circuit.

6. A heating control circuit as claimed in claim 1, characterized in that: The upper half-bridge circuit includes a first MOS tube switch and a second MOS tube switch, and the lower half-bridge circuit includes a third MOS tube switch and a fourth MOS tube switch.

7. A heating control circuit as claimed in claim 6, characterized in that: The gate of the first MOS tube switch and the gate of the fourth MOS tube switch are connected to the HO terminal, the gate of the second MOS tube switch and the gate of the third MOS tube switch are connected to the LO terminal, the source of the first MOS tube switch and the source of the second MOS tube switch are connected to a battery power source, the drain of the first MOS tube switch and the drain of the second MOS tube switch are connected in parallel to the source of the third MOS tube switch and the source of the fourth MOS tube switch, and the drain of the third MOS tube switch and the drain of the fourth MOS tube switch are connected to the ground terminal GND.

8. A heating control circuit as claimed in claim 1, characterized in that: The full-bridge drive circuit further includes a capacitor C1 and an inductor L1. The drain of the first MOS tube switch and the source of the third MOS tube switch are connected to the drain of the second MOS tube switch and the source of the fourth MOS tube switch through the capacitor C1 and the inductor L1.

9. A heating control circuit as claimed in claim 1, characterized in that: When the HO terminal outputs a high level, the first MOS tube switch and the fourth MOS tube switch are turned on; when the HO terminal outputs a low level, the first MOS tube switch and the fourth MOS tube switch are turned off; when the LO terminal outputs a high level, the second MOS tube switch and the third MOS tube switch are turned on; when the LO terminal outputs a low level, the second MOS tube switch and the third MOS tube switch are turned off.

10. An electromagnetic heating smoking device, characterized in that: The invention comprises an aerosol generating device and an aerosol generating article, wherein the aerosol generating device comprises a power supply, a heating chamber, an induction heating body, an induction transmitter and a controller: the heating chamber accommodates the aerosol generating article when in operation, the aerosol generating article has a receptor as the induction heating body therein, the induction transmitter comprises an induction coil having a magnetic field axis, the induction coil is arranged to surround at least a portion of the heating chamber and the receptor, the power supply is connected to the induction coil and is configured to provide a high-frequency current to the induction coil under the control of the controller, and the controller has a heating control circuit as described in any one of claims 1 to 9.

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