Electronic atomization device and control method thereof
By alternately turning the controller on and off the switching circuit, sampling the voltage value of the heating element to determine short circuits, the problem of short circuit protection integrated circuits occupying a large PCB area is solved, achieving the effects of cost reduction and product miniaturization, and providing user prompts.
Patent Information
- Application Number
- CN202410158169.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-01
- Publication Date
- 2025-08-01
AI Technical Summary
In existing electronic atomization devices, short-circuit protection integrated circuits or chips occupy a large PCB area, increasing hardware costs and hindering product miniaturization.
The controller outputs pulse signals through the control port to alternately turn the switching circuit on and off, samples the voltage value of the heating element to determine short circuits, and provides protection based on preset thresholds, occupying only one IO port.
It achieves reliable short-circuit protection, reduces hardware costs, facilitates product miniaturization, and alerts users to short-circuit conditions through prompts.
Smart Images
Figure CN120391749A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of aerosol generation technology, and in particular to an electronic atomization device and a control method thereof. Background Art
[0002] An electronic atomizer is an electronic product that heats a liquid aerosol-forming substrate, such as e-liquid, to produce an aerosol for the user to inhale. It typically consists of two parts: an atomizer, which stores the liquid aerosol-forming substrate and houses a heating element for heating it. The power supply assembly includes circuitry and a battery cell, which powers the heating element, generating high temperatures that heat the liquid aerosol-forming substrate.
[0003] Despite their small size, electronic atomizers possess extremely high safety requirements. If a short circuit occurs in the atomizer core during the puffing process, unprotected, it could damage circuit components, even causing the battery to explode and spark a fire. Existing solutions typically incorporate expensive short-circuit protection integrated circuits or chips to monitor short circuits in the heating element. However, these dedicated short-circuit protection ICs or chips occupy a significant amount of PCB area, hindering the cost reduction and miniaturization of electronic atomizer circuit hardware. Summary of the Invention
[0004] The present application provides an electronic atomization device and a control method thereof, aiming to provide a heating element short-circuit monitoring solution that saves circuit hardware costs and is conducive to product miniaturization.
[0005] On one hand, the present application provides an electronic atomization device, comprising:
[0006] at least one heating element for heating the aerosol-forming substrate to generate an aerosol;
[0007] a battery cell for providing power to the heating element;
[0008] a switch circuit configured to connect or disconnect the electrical connection between the battery cell and the heating element;
[0009] a controller comprising a control port electrically connected to the switch circuit and a sampling port electrically connected to the heating element;
[0010] In which, the controller is configured to output a pulse signal through the control port to control the switching circuit to be alternately turned on and off, thereby outputting power to the heating element to heat it; during the conduction period of the switching circuit, the voltage value of the heating element is obtained through the sampling port, and based on the comparison result of the voltage value with the preset short-circuit voltage threshold, it is determined whether the heating element is short-circuited.
[0011] In one example, one end of the heating element is grounded, and the other end of the heating element is electrically connected to the switch circuit and the sampling port.
[0012] In one example, the switching circuit includes a switching tube, which includes a first electrode end, a second electrode end, and a control end; the first electrode end is electrically connected to the battery core, the second electrode end is electrically connected to the heating element, and the control end is electrically connected to the control port.
[0013] In one example, a bleeder resistor is further included, one end of the bleeder resistor is electrically connected to the first electrode end, and the other end of the bleeder resistor is electrically connected to the control end.
[0014] In one example, a current limiting resistor is further included, one end of the current limiting resistor is electrically connected to the heating element, and the other end of the current limiting resistor is electrically connected to the sampling port.
[0015] In one example, the controller further includes a power supply port electrically connected to the battery cell.
[0016] In one example, the controller is configured to stop outputting the pulse signal if the voltage value is lower than a preset short-circuit voltage threshold; and continue outputting the pulse signal if the voltage value is not lower than the preset short-circuit voltage threshold.
[0017] In one example, the controller is configured to output a prompt message if the voltage value is lower than a preset short-circuit voltage threshold, so as to prompt a user that a short circuit occurs in the heating element.
[0018] In one example, the controller is configured to sample the analog voltage value of the heating element through the sampling port and convert the analog voltage value into a digital voltage reference value; if the digital voltage reference value is lower than a preset short-circuit voltage reference threshold, the pulse signal is stopped from being output; if the digital voltage reference value is not lower than the preset short-circuit voltage reference threshold, the pulse signal is continued to be output.
[0019] In one example, the controller is configured to not perform an action of determining whether a short circuit occurs in the heating element if the switch circuit is in an off state during the process of sampling the voltage value of the heating element.
[0020] In one example, the electronic atomization device includes a first heating element and a second heating element, and the controller is configured to obtain voltage values of the first heating element and the second heating element in a time-sharing manner through the same sampling port.
[0021] In one example, the controller is configured to intermittently obtain the voltage value of the heating element, and the frequency of obtaining the voltage value of the heating element is equal to or greater than the frequency of the pulse signal.
[0022] On the other hand, the present application provides a control method for an electronic atomization device, and the electronic atomization device includes:
[0023] At least one heating element for heating an aerosol-forming substrate to generate an aerosol;
[0024] A battery cell for supplying power to the heating element;
[0025] A switching circuit configured to conduct or disconnect the electrical connection between the battery cell and the heating element;
[0026] The control method includes:
[0027] Outputting a pulse signal to control the switching circuit to alternately conduct and disconnect, so as to output power to the heating element to heat it;
[0028] During the conduction period of the switching circuit, obtaining the voltage value of the heating element, and judging whether the heating element is short-circuited according to the comparison result between the voltage value and a preset short-circuit voltage threshold.
[0029] For the electronic atomization device and its control method provided by the present application, during the conduction period of the switching circuit, the voltage value of the heating element is sampled through a port, and it is judged whether the heating element is short-circuited according to the comparison result between the voltage value and a preset short-circuit voltage threshold. On the one hand, only one IO port is occupied, reducing the hardware cost; on the other hand, reliable short-circuit protection can be achieved, effectively protecting the safety of personnel and the device from damage. Description of the Drawings
[0030] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings represent similar elements, unless otherwise stated, the drawings in the figures do not constitute a proportional limitation.
[0031] Figure 1 is a schematic diagram of an electronic atomization device provided by an embodiment of the present application;
[0032] Figure 2 is a schematic diagram of a controller provided by an embodiment of the present application;
[0033] Figure 3 is a specific circuit schematic diagram of an electronic atomization device provided by an embodiment of the present application;
[0034] Figure 4It is another specific circuit schematic diagram of the electronic atomization device provided by the embodiment of the present application;
[0035] Figure 5 It is a schematic diagram of a pulse signal provided by the embodiment of the present application;
[0036] Figure 6 It is a schematic diagram of the control method of the electronic atomization device provided by the embodiment of the present application. Specific Embodiments
[0037] For ease of understanding of the present application, the present application will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The terms "upper", "lower", "left", "right", "inner", "outer" and similar expressions used in this specification are only for the purpose of illustration.
[0038] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in this specification in the description of the present application are only for the purpose of describing specific embodiments and are not used to limit the present application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.
[0039] Figure 1 It is a schematic diagram of the electronic atomization device provided by the embodiment of the present application.
[0040] As Figure 1 shown, the electronic atomization device 100 includes an atomizer 10 and a power supply assembly 20, and the atomizer 10 and the power supply assembly 20 are non-detachable. In other examples, it is also feasible that the atomizer 10 and the power supply assembly 20 are detachably connected.
[0041] The atomizer 10 includes a liquid storage cavity (not shown) for storing an aerosol-forming matrix and a heating element 11. Under the action of the electric power provided by the power supply assembly 20, the heating element 11 heats and atomizes the aerosol-forming matrix to form an aerosol that can be sucked.
[0042] In this example, the aerosol-forming matrix is a liquid aerosol-forming matrix. The atomizer 10 further includes a liquid transfer unit (not shown). The liquid transfer unit can be, for example, cotton fiber, metal fiber, ceramic fiber, glass fiber or porous ceramic, etc. The liquid transfer unit can transfer the liquid aerosol-forming matrix stored in the liquid storage cavity to the heating element 11 through capillary action.
[0043] The power supply assembly 20 includes a battery cell 21 and a circuit 22.
[0044] The battery cell 21 provides power for operating the electronic atomization device 100. The battery cell 21 can be a rechargeable battery cell or a disposable battery cell.
[0045] The circuit 22 can control the overall operation of the electronic atomization device 100. The circuit 22 not only controls the operations of the battery cell 21 and the heating element 11, but also controls the operations of other components in the electronic atomization device 100.
[0046] The circuit 22 includes at least one controller. The controller can include a logic gate array, or can include a combination of a general - purpose microprocessor and a memory storing programs executable in the microprocessor. In addition, those skilled in the art should understand that the circuit 22 can include another type of hardware.
[0047] Figure 2 It is a schematic diagram of a controller provided by an embodiment of the present application.
[0048] As Figure 2 shown, the controller includes a control port (shown as port 1 in the figure), a sampling port (shown as port 2 in the figure), and a power supply port (shown as port 3 in the figure). The power supply port includes a positive power supply port and a negative power supply port. The positive power supply port is electrically connected to the positive electrode of the battery cell 21 (shown as B + in the reference figure), and the negative power supply port is electrically connected to the negative electrode of the battery cell 21.
[0049] Figure 3 It is a specific circuit schematic diagram of an electronic atomization device provided by an embodiment of the present application.
[0050] As Figure 3 shown, the circuit shows the connection terminal B +, the switch circuit U1, and the connection terminals F1 + and F1 -.
[0051] The connection terminal B + is electrically connected to the positive electrode of the battery cell 21. The heating element 11 is connected between the connection terminals F1 + and F1 -, that is, one end of the heating element 11 is grounded, and the other end of the heating element 11 is electrically connected to the switch circuit U1. The sampling port is electrically connected to the other end of the heating element 11, that is, to the connection terminal F1 +. The controller can sample the voltage value of the heating element 11 through the sampling port (shown as OUT1_AD in the reference figure).
[0052] The switch circuit U1 is electrically connected between the battery cell 21 and the heating element 11, for example, between the connection terminal B + and the connection terminal F1 + shown in the figure.
[0053] The switching circuit U1 includes a switching transistor Q2. The switching transistor Q2 includes a first electrode terminal, a second electrode terminal, a control terminal, and a diode; the first electrode terminal is electrically connected to the battery cell 21, such as the connection terminal B+, the second electrode terminal is electrically connected to the heating element 11, such as the connection terminal F1+, the connection terminal F1- is grounded, the control terminal is electrically connected to the control port of the controller, and under the action of the pulse signal output by the control port (as shown by PWM_1EN in the reference figure), the switching transistor Q2 can conduct or disconnect the electrical connection between the battery cell 21 and the heating element 11. The switching transistor Q2 includes, but is not limited to, a MOS transistor, and can also be other types of transistors. In the figure, a PMOS transistor is used. The first electrode terminal is the source of the PMOS transistor, the second electrode terminal is the drain of the PMOS transistor, and the control terminal is the gate of the PMOS transistor.
[0054] The circuit also shows a discharge resistor R1. One end of the discharge resistor R1 is electrically connected to the first electrode terminal, and the other end of the discharge resistor R1 is electrically connected to the control terminal. The discharge resistor R1 can play a role in preventing ESD static electricity.
[0055] The circuit also shows a current-limiting resistor R3. One end of the current-limiting resistor R3 is electrically connected to the heating element 11, and the other end of the current-limiting resistor R3 is electrically connected to the sampling port of the controller.
[0056] Figure 4 It is another specific circuit schematic diagram of the electronic atomization device provided by the embodiment of the present application.
[0057] Different from the foregoing example, in Figure 4The device has multiple heating elements 11. Taking two heating elements 11 as an example, one heating element 11 is connected between connection terminals D1 and D2, and the other heating element 11 is connected between connection terminals D3 and D4. Correspondingly, the switching circuit U1 includes a switch tube Q20 and a switch tube Q21. The first electrode terminal of the switch tube Q20 is electrically connected to the battery cell 21 (refer to VBAT in the figure), the second electrode terminal of the switch tube Q20 is electrically connected to one of the heating elements 11, such as the connection terminal D1, and the connection terminal D2 is grounded. The control terminal of the switch tube Q20 is electrically connected to one of the control ports of the controller. Under the action of a pulse signal output by one of the control ports (refer to PWM_ADJ1 in the figure), the switch tube Q20 can conduct or disconnect the electrical connection between the battery cell 21 and one of the heating elements 11. The first electrode end of the switch tube Q21 is electrically connected to the battery cell 21 (as shown in the reference figure VBAT), the second electrode end of the switch tube Q21 is electrically connected to another heating element 11, for example, the connection end D3, the connection end D4 is grounded, and the control end of the switch tube Q21 is electrically connected to another control port of the controller. Under the action of the pulse signal output by the other control port (as shown in the reference figure PWM_ADJ2), the switch tube Q21 can turn on or off the electrical connection between the battery cell 21 and the other heating element 11.
[0058] and Figure 3 Similarly, resistors R18 and R20 are bleeder resistors, and resistors R21 and R22 are current limiting resistors. The connection terminal OUT2_AD is electrically connected to the sampling port of the controller.
[0059] Based on the above setting, in one example, the controller is configured to output a pulse signal through the control port to control the switching circuit to be alternately turned on and off, thereby outputting power to the heating element to heat it; during the conduction period of the switching circuit, the voltage value of the heating element is obtained through the sampling port, and based on the comparison result of the voltage value with a preset short-circuit voltage threshold, it is determined whether the heating element is short-circuited.
[0060] As an example, Figure 3 and Figure 5 As shown in the figure, the pulse signal output by the controller through the control port is shown as the PWM signal P in the figure. The PWM signal P has a certain duty cycle. Assuming that the duty cycle of the PWM signal P is 50%, within a period T, the on-time of the switch circuit U1 is T / 2, and the off-time of the switch circuit U1 is also T / 2. In this way, the average input voltage of the heating element 11 is 1 / 2 of the supply voltage.
[0061] During the conduction period of the switch circuit U1, for example, t m ~t k Period (tm ~t n (taking ~t as a period), the controller intermittently obtains the voltage value of the heating element 11 through the sampling port, and determines whether the heating element 11 is short-circuited according to the comparison result between the voltage value and a preset short-circuit voltage threshold. It can be understood that the frequency of obtaining the voltage value of the heating element 11 is equal to or greater than the frequency of the pulse signal.
[0062] It should be noted that when performing short-circuit detection on the two heating elements shown in Figure 4 , the switch tube Q20 can be turned on first and the switch tube Q21 can be turned off, and then the voltage value of one of the heating elements 11 (connected between the connection terminals D1 and D2) is sampled through the sampling port of the controller (shown as OUT2_AD in the figure), and whether the one heating element 11 is short-circuited is determined according to the comparison result between the voltage value and a preset short-circuit voltage threshold. Then the switch tube Q21 is turned on and the switch tube Q20 is turned off, and then the voltage value of the other heating element 11 (connected between the connection terminals D3 and D4) is sampled through the sampling port of the controller (shown as OUT2_AD in the figure), and whether the other heating element 11 is short-circuited is determined according to the comparison result between the voltage value and a preset short-circuit voltage threshold, so that only one IO port is occupied and reliable short-circuit protection can be achieved.
[0063] It can be understood that the switch tube Q20 can also be alternately turned on and off (at this time, the switch tube Q21 has no input control signal), and during the on period of the switch tube Q20, the voltage value of one of the heating elements is sampled through the sampling port, and whether one of the heating elements is short-circuited is determined according to the comparison result between the voltage value and a preset short-circuit voltage threshold. Similarly, when it is necessary to determine whether the other heating element 11 is short-circuited, the switch tube Q21 is alternately turned on and off (at this time, the switch tube Q20 has no input control signal).
[0064] As one of the optional examples, the two heating elements 11 can work simultaneously. In this state, the controller outputs control signals to both the switch tube Q20 and the switch tube Q21, so that both of them are alternately turned on and off according to the PWM pulses, and the PWM signal pulse waveforms of the two are complementary, that is, when the switch tube Q20 is on, the switch tube Q21 is off, and the circuit collects the voltage signal through the above-mentioned sampling port OUT2_AD to determine whether one of the heating elements is short-circuited; when the switch tube Q20 is off, the switch tube Q21 is on, and the circuit collects the voltage signal through the same sampling port OUT2_AD to determine whether the other heating element is short-circuited.
[0065] In actual work, the actions of sampling and short-circuit judgment are embedded in the power output control program of the heating element and are repeatedly executed at a certain frequency; the actions of sampling and short-circuit judgment start when there is a suction signal and stop with the termination of the suction signal. The frequency of the actions of sampling and short-circuit judgment is greater than the frequency of the alternate conduction of the switching tubes. Sampling the voltage reference value at a high frequency can achieve more accurate short-circuit monitoring at a high frequency.
[0066] In one example, if the voltage value is lower than the preset short-circuit voltage threshold, the pulse signal output is stopped; if the voltage value is not lower than the preset short-circuit voltage threshold, the pulse signal output continues.
[0067] Specifically, please refer again to Figure 3 As shown, assume that the internal resistance of the switching tube Q2 is r, the resistance of the heating element 11 is R, and the voltage of the battery cell 21 is V bat , and the voltage across the heating element ¹¹ is V R . According to Ohm's law, V bat / (r + R) = V R / R, and further it can be obtained that V bat / V R = 1 + r / R. In this formula, V bat is a variable, the resistance R of the heating element 11 is unknown, and the internal resistance r of the switching tube Q2 is also unknown.
[0068] However, it can be known from the bandgap voltage mechanism of the controller that the power supply voltage of the controller is V bat , and this power supply voltage is the fixed number 4096 of the full scale of the ADC converter (assuming the ADC converter is a 12-bit converter), and V R does not need to measure the actual voltage either, and can also be represented by the conversion reference value V adc of the ADC converter. Therefore, the previous formula can be converted to: 4096 / V adc = 1 + r / R.
[0069] It can be seen from the above converted formula that the resistance R of the heating element 11 is in a direct proportional relationship with the conversion reference value V adc . When the heating element 11 is short-circuited, its resistance R is a very small value, so the corresponding V adc is also relatively small. Therefore, a preset short-circuit voltage reference threshold V ref can be used. When V adc < V ref , it can be determined that the heating element 11 is short-circuited.
[0070] In one example, the controller is configured to sample an analog voltage value of the heating element through the sampling port, and convert the analog voltage value into a digital voltage reference value; if the digital voltage reference value is lower than a preset short - circuit voltage reference threshold, stop outputting the pulse signal; if the digital voltage reference value is not lower than the preset short - circuit voltage reference threshold, continue to output the pulse signal.
[0071] In one example, the controller is configured to output a prompt message if the voltage value is lower than a preset short - circuit voltage threshold, so as to prompt the user that the heating element has a short - circuit.
[0072] In this example, the prompt message can be presented to the user in ways such as vibration, light (e.g., the flashing of an LED light, the display on a display screen), sound, etc.
[0073] In one example, the controller is configured to, during the process of sampling the voltage value of the heating element, if the switch circuit is in an open state, do not perform the determination action of whether the heating element has a short - circuit.
[0074] Still taking Figure 3 and Figure 5 as an example, at a moment close to t k When the controller samples the voltage value of the heating element 11 through the sampling port, since sampling takes a certain amount of time, it is very easy for the switch circuit U1 to be in an open state before the controller finishes sampling the voltage value of the heating element 11, which will lead to inaccurate sampling data. If the short - circuit of the heating element 11 is judged based on this inaccurate sampling data, it is very easy to cause the user to be unable to inhale normally, thereby reducing the user's inhalation experience. Therefore, during the process of sampling the voltage value of the heating element 11, if the switch circuit U1 is in an open state, do not perform the determination action of whether the heating element 11 has a short - circuit.
[0075] Figure 6 FIG. is a schematic diagram of a control method of an electronic atomization device provided by an embodiment of the present application. The electronic atomization device can refer to the foregoing part. The control method includes the steps:
[0076] S11. Output a pulse signal to control the switch circuit to conduct and disconnect alternately, so as to output power to the heating element to heat it;
[0077] S12. During the conduction period of the switch circuit, obtain the voltage value of the heating element, and judge whether the heating element has a short - circuit according to the comparison result between the voltage value and a preset short - circuit voltage threshold.
[0078] In one example, if the voltage value is lower than a preset short - circuit voltage threshold, the output of the pulse signal is stopped; if the voltage value is not lower than the preset short - circuit voltage threshold, the pulse signal is continuously output.
[0079] In one example, if the voltage value is lower than a preset short - circuit voltage threshold, a prompt message is output to prompt the user that the heating element has a short - circuit.
[0080] In one example, the analog voltage value of the heating element is sampled, and the analog voltage value is converted into a digital voltage reference value; if the digital voltage reference value is lower than a preset short - circuit voltage reference threshold, the output of the pulse signal is stopped; if the digital voltage reference value is not lower than the preset short - circuit voltage reference threshold, the pulse signal is continuously output.
[0081] In one example, during the process of sampling the voltage value of the heating element, if the switch circuit is in an open state, the judgment action on whether the heating element has a short - circuit is not performed.
[0082] In one example, the voltage value of the heating element is obtained intermittently, and the frequency of obtaining the voltage value of the heating element is equal to or greater than the frequency of the pulse signal.
[0083] It should be noted that the description and drawings of the present application give preferred embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments do not serve as additional limitations to the content of the present application. The purpose of providing these embodiments is to make the understanding of the disclosed content of the present application more thorough and comprehensive. Moreover, the above - mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as within the scope described in the specification of the present application; further, for those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present application.
Claims
1. An electronic atomization device, characterized in that, include: at least one heating element for heating the aerosol-forming substrate to generate an aerosol; a battery cell for providing power to the heating element; a switch circuit configured to connect or disconnect the electrical connection between the battery cell and the heating element; a controller comprising a control port electrically connected to the switch circuit and a sampling port electrically connected to the heating element; In which, the controller is configured to output a pulse signal through the control port to control the switching circuit to be alternately turned on and off, thereby outputting power to the heating element to heat it; during the conduction period of the switching circuit, the voltage value of the heating element is obtained through the sampling port, and based on the comparison result of the voltage value with the preset short-circuit voltage threshold, it is determined whether the heating element is short-circuited.
2. The electronic atomization device according to claim 1, wherein One end of the heating element is grounded, and the other end of the heating element is electrically connected to the switch circuit and the sampling port.
3. The electronic atomization device according to claim 1, wherein, The switching circuit includes a switching tube, which includes a first electrode end, a second electrode end and a control end; the first electrode end is electrically connected to the battery core, the second electrode end is electrically connected to the heating element, and the control end is electrically connected to the control port.
4. The electronic atomization device according to claim 3, wherein A discharge resistor is also included, one end of the discharge resistor is electrically connected to the first electrode end, and the other end of the discharge resistor is electrically connected to the control end.
5. The electronic atomization device according to claim 1, wherein, It also includes a current limiting resistor, one end of which is electrically connected to the heating element, and the other end of which is electrically connected to the sampling port.
6. The electronic atomization device according to claim 1, characterized in that, The controller further includes a power supply port electrically connected to the battery cell.
7. The electronic atomization device according to claim 1, characterized in that, The controller is configured to stop outputting the pulse signal if the voltage value is lower than a preset short-circuit voltage threshold; and continue outputting the pulse signal if the voltage value is not lower than the preset short-circuit voltage threshold.
8. The electronic atomization device according to claim 7, wherein, The controller is configured to output a prompt message if the voltage value is lower than a preset short-circuit voltage threshold, so as to prompt a user that a short circuit occurs in the heating element.
9. The electronic atomization device according to claim 7, wherein, The controller is configured to sample the analog voltage value of the heating element through the sampling port and convert the analog voltage value into a digital voltage reference value; if the digital voltage reference value is lower than a preset short-circuit voltage reference threshold, stop outputting the pulse signal; If the digital voltage reference value is not lower than the preset short-circuit voltage reference threshold, the pulse signal continues to be output.
10. The electronic atomization device according to claim 1, wherein, The controller is configured to not perform an action of determining whether a short circuit occurs in the heating element if the switch circuit is in an off state during the process of sampling the voltage value of the heating element.
11. The electronic atomization device according to claim 1, characterized in that, The electronic atomization device includes a first heating element and a second heating element, and the controller is configured to obtain the voltage values of the first heating element and the second heating element in a time-sharing manner through the same sampling port.
12. The electronic atomization device according to claim 1, characterized in that, The controller is configured to intermittently obtain the voltage value of the heating element, and the frequency of obtaining the voltage value of the heating element is equal to or greater than the frequency of the pulse signal.
13. A control method for an electronic atomization device, characterized in that, The electronic atomization device comprises: at least one heating element for heating the aerosol-forming substrate to generate an aerosol; a battery cell for providing power to the heating element; A switching circuit, configured to conduct or disconnect the electrical connection between the battery cell and the heating element; The control method includes: Outputting a pulse signal to control the switching circuit to conduct and disconnect alternately, so as to output power to the heating element to heat it; During the conduction period of the switching circuit, obtaining the voltage value of the heating element, and judging whether the heating element is short-circuited according to the comparison result between the voltage value and a preset short-circuit voltage threshold.