Automatic charging and sucking switching circuit with time sequence control for atomization equipment
By introducing a timing-controlled automatic charging/inhalation switching circuit into the electronic atomization device and using a digital logic module to set the time interval of the power transistor, the problems of current surges during charging and repeated device start-ups and shutdowns are solved, resulting in improved stability and extended battery life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-04-03
AI Technical Summary
Existing electronic atomizing devices pose safety hazards when smoking while charging. The switching interval between the charging power transistor and the smoking power transistor cannot be precisely controlled, which may cause current surges. Furthermore, the charging circuit immediately resumes operation after smoking ends, leading to repeated start-stop abnormalities of the device.
An automatic switching circuit for charging and inhalation in atomizing devices with timing control is adopted. The on/off time interval of the charging power transistor and the inhalation power transistor is set through a digital logic module, and the charging recovery is delayed to prevent repeated start-stop. The switching of the power transistor is controlled by a microcontroller or programmable logic device.
It avoids instantaneous current surges, reduces the frequency of charge and discharge switching, reduces battery wear, extends battery life, improves equipment stability, and prevents equipment malfunctions caused by repeated start-ups and shutdowns.
Smart Images
Figure CN224069804U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic atomization equipment technology, specifically to an automatic switching circuit for charging and inhalation of an atomization device with timing control. Background Technology
[0002] As people's health awareness gradually increases, their understanding of the harms of traditional tobacco is also deepening. The combustion of traditional tobacco produces various harmful substances, such as tar and carbon monoxide. Long-term use seriously threatens human health and can cause various diseases, such as lung cancer and cardiovascular disease. Electronic atomization devices, as a new type of smoking alternative, heat an atomizing liquid containing nicotine and other ingredients to produce an aerosol for users to inhale, avoiding the combustion process of traditional tobacco and reducing the generation of harmful chemicals to some extent. At the same time, continuous technological advancements have provided strong support for the development of electronic atomization devices. The research and development of new materials and the application of precision electronic technology have enabled electronic atomization devices to be continuously optimized and upgraded in terms of design, performance, and user experience.
[0003] In the existing technology, there are safety hazards when smoking in electronic atomizing devices while charging. The switching interval between the charging power tube and the smoking power tube cannot be precisely controlled, which may cause current surges and affect the stability of the device. In addition, the charging circuit is restored immediately after smoking ends, which can easily lead to repeated start-stop and cause device malfunction. Utility Model Content
[0004] To address the shortcomings of existing technologies, this application proposes an automatic switching circuit for charging and inhalation of atomizing devices with timing control. This circuit controls the time interval to avoid instantaneous current surges, delays charging recovery to prevent device malfunctions caused by repeated start-stop cycles, and improves stability.
[0005] This utility model provides the following technical solution: an automatic switching circuit for charging and inhalation of an atomizing device with timing control, comprising:
[0006] Smoking detection module S1 is used to output a smoking signal;
[0007] The digital logic module M1 has its input terminal connected to the output terminal of the smoking detection module S1, and its output terminal connected to the gates of the charging power transistor Q1 and the smoking power transistor Q2, respectively.
[0008] The input power supply VCC is connected to the source of the charging power transistor Q1;
[0009] The drain of the charging power transistor Q1 is connected to the source of the smoking power transistor Q2 and the positive terminal of the lithium battery BAT.
[0010] The drain of the power transistor Q2 is connected to one end of the resistor R1, and the other end of the resistor R1 is grounded together with the negative terminal of the lithium battery.
[0011] As a preferred embodiment of this utility model, the digital logic module M1 is a microcontroller or a programmable logic device.
[0012] As a preferred embodiment of this utility model, when the digital logic module M1 detects an air intake action, it controls the charging power transistor Q1 to immediately turn off, and then turns it back on after a preset time delay after the air intake action ends.
[0013] As a preferred embodiment of this utility model, the preset time is 2 seconds.
[0014] As a preferred embodiment of this utility model, the charging power transistor Q1 and the smoking power transistor Q2 are N-channel MOSFETs.
[0015] The beneficial effects of this utility model are:
[0016] 1. In this utility model, the time interval for switching power transistors is set through a digital logic module to avoid instantaneous current surges;
[0017] 2. In this utility model, the charging and discharging switching frequency is reduced, battery wear is decreased, and battery life is extended;
[0018] 3. In this utility model, the charging is delayed after smoking ends to prevent equipment malfunctions caused by repeated start-stop cycles and improve stability. Attached Figure Description
[0019] Figure 1 This is the circuit diagram of this utility model. Detailed Implementation
[0020] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0021] Example
[0022] like Figure 1 As shown, an automatic switching circuit for charging and inhalation in an atomizing device with timing control includes:
[0023] The smoking detection module S1 is used to detect the user's inhalation action and output a smoking signal.
[0024] The digital logic module M1 is used to generate timing control signals based on the smoking signal. Its input is connected to the smoking detection module, and its output is connected to the gates of the charging power transistor Q1 and the smoking power transistor Q2, respectively.
[0025] The charging power transistor Q1 has its source connected to the input power supply VCC and its drain connected to the positive terminal of the lithium battery BAT and the source of the smoking power transistor Q2.
[0026] The power transistor Q2 is connected to one end of the resistor R1, and the other end of the resistor R1 is grounded.
[0027] The lithium battery (BAT) has its negative terminal grounded.
[0028] In this embodiment, the output terminal of the smoking detection module S1 is connected to the input terminal of the digital logic module M1; the two output terminals of the digital logic module M1 are respectively connected to the gates of the charging power transistor Q1 and the smoking power transistor Q2; the input power supply VCC is connected to the source of the charging power transistor Q1, and the drain of the charging power transistor Q1 is connected to the source of the smoking power transistor Q2 and the positive terminal of the lithium battery BAT; the drain of the smoking power transistor Q2 is connected to the resistance wire R1, and the other end of the resistance wire is grounded together with the negative terminal of the lithium battery BAT.
[0029] In this embodiment, the digital logic module M1 is a microcontroller or programmable logic device, used to set the on / off time interval between the charging power transistor Q1 and the smoking power transistor Q2.
[0030] In this embodiment, the charging power transistor Q1 and the smoking power transistor Q2 are N-channel MOSFETs.
[0031] Implementation plan: During the charging phase, the input power VCC charges the lithium battery BAT through the charging power transistor Q1. At this time, the charging power transistor Q1 is turned on, and the smoking power transistor Q2 is turned off. During smoking detection, when the smoking detection module S1 detects an inhalation action, it sends a signal to the digital logic module M1. A timing switch is performed, and the digital logic module M1 immediately turns off the charging power transistor Q1, disconnecting the charging circuit. If the smoking signal lasts for more than 32ms, the digital logic module M1 turns on the smoking power transistor Q2, and the resistance wire R1 is energized and heated. After smoking ends, the digital logic module M1 delays for 2 seconds before turning on the charging power transistor Q1 again to resume charging.
[0032] It should be noted that the two detection time thresholds of 32ms and 2s described above are only for the convenience of discussion and analysis in this embodiment. The detection time thresholds required for actual applications are all within the scope of protection of this patent.
[0033] In this invention, the time interval for power transistor switching is set through a digital logic module to avoid instantaneous current surges; the charging and discharging switching frequency is reduced to decrease battery wear and extend battery life; and charging is delayed after smoking ends to prevent equipment malfunctions caused by repeated start-stop cycles and improve stability.
[0034] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.
[0035] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A timing control automatic switching circuit for an atomizing device, characterized by, The application relates to a smoking detection device, which comprises: a smoking detection module S1 for outputting a smoking signal; a digital logic module M1, the input end of which is connected with the output end of the smoking detection module S1, and the output end of which is connected with the gate of a charging power tube Q1 and the gate of a smoking power tube Q2 respectively; an input power supply VCC, which is connected with the source of the charging power tube Q1; the drain of the charging power tube Q1 is connected with the source of the smoking power tube Q2 and the positive pole of a lithium battery BAT; the drain of the smoking power tube Q2 is connected with one end of a resistance wire R1, and the other end of the resistance wire R1 is grounded together with the negative pole of the lithium battery.
2. The automatic switching circuit with timing control for the atomizing device according to claim 1, characterized in that, The digital logic module M1 is a microcontroller or a programmable logic device.
3. The automatic switching circuit with timing control for the atomizing device according to claim 1, characterized in that, When the digital logic module M1 detects a puffing action, the charging power tube Q1 is immediately closed, and is opened again after a preset time delay after the puffing action is over.
4. The automatic switching circuit with timing control for the atomizing device according to claim 1, characterized in that, The preset time is 2 seconds.
5. The automatic switching circuit with timing control for the atomizing device according to claim 1, characterized in that, The charging power tube Q1 and the smoking power tube Q2 are N-channel MOS tubes.