Control circuit with zero power consumption
By using P-type field-effect transistors and single-pole double-throw switches in electronic cigarettes, the control circuit only supplies power to the processor when in use, solving the problem of energy waste in the standby state of electronic cigarettes, realizing a zero-power control circuit, and improving power efficiency.
Patent Information
- Application Number
- CN202520540069.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-25
AI Technical Summary
The control circuit of existing electronic cigarettes continuously consumes power in standby mode, resulting in wasted battery power, especially since the processor also consumes a small amount of current when it is in sleep mode for a long time.
It adopts a P-type field-effect transistor and a single-pole double-throw switch design, and controls the conduction and disconnection of the switching transistor by a button. It only supplies power to the processor when in use and keeps it in a power-off state at other times, achieving zero power consumption.
This effectively avoids the processor consuming power when it is not in use, improves power efficiency, and reduces power waste.
Smart Images
Figure CN223897783U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the atomization technical field, in particular to an atomization device with a zero-power-consumption control circuit. BACKGROUND
[0002] The inductive electronic cigarette generally comprises a shell, a battery and a circuit board in the shell, the circuit board is connected with the battery, the circuit board is provided with a processor (chip), an upper portion of the shell is provided with a suction nozzle, a lower portion of the shell is provided with a sealing element, an air outlet channel is arranged between the sealing element and the suction nozzle, an upper portion of the air outlet channel is communicated with the suction nozzle, an atomization assembly is arranged in the air outlet channel, the atomization assembly is connected with the circuit board, a groove oil storage bin is arranged between the inner wall of the shell, the sealing element and the outer wall of the air outlet channel, and tobacco tar is arranged in the oil storage bin; an air inlet channel is formed in the bottom of the shell, an airflow sensor is arranged in the air inlet channel, a lower portion of the air outlet channel is communicated with the air inlet channel, the airflow sensor is connected with the circuit board, when the oral cavity sucks the suction nozzle, external air enters the air outlet channel through the air inlet channel, the tobacco tar atomized by the atomization assembly is taken away, and the air flows out from the suction nozzle, when the air flows into the air inlet channel, the airflow sensor is triggered, the airflow sensor sends an electric signal to the processor, the processor informs the battery to provide electric energy to the atomization assembly, and the atomization assembly starts to work to heat the tobacco tar into a gaseous state.
[0003] In order to meet the suction of people at different times, the airflow sensor and the processor need to be in the powered state and be on standby at all times, and the inductive electronic cigarette consumes electric energy at all times; in addition, there is another design, in which the processor is in a sleep state in a normal state, the airflow sensor sends an electric signal to the processor to wake up the processor when suction is needed, the processor enters a normal working mode again, and the processor informs the battery to provide electric energy to the atomization assembly; a small electric current is also needed when the processor is in the sleep state, and electric energy is also consumed; if the processor is in the sleep state for a long time, the electric energy in the battery may be consumed by the processor.
[0004] Therefore, it is necessary to set an electronic cigarette to overcome the above defects. CONTENT OF THE UTILITY MODEL
[0005] The main purpose of the application is to provide a control circuit with zero power consumption, and solve the technical problem of energy consumption.
[0006] In order to achieve the above purpose, the application provides a control circuit with zero power consumption, which comprises:
[0007] a power supply;
[0008] a switch tube with a gate, an input end and an output end, the input end is connected with the power supply;
[0009] A processor comprises a first pin, a second pin, the first pin is connected to the output of the switch tube, the second pin is connected to the gate of the switch tube, the first pin is a power pin, and the second pin is an I / O output pin;
[0010] A key, one end of which is connected to the power supply, and the other end is connected to the first pin of the processor.
[0011] The key is a single-pole double-throw switch, which comprises a first switch and a second switch, one end of the first switch is connected to the power supply, the other end of the first switch is connected to the first pin, the processor further comprises a third pin, one end of the second switch is connected to the power supply, and the other end of the second switch is connected to the third pin.
[0012] The third pin is a switch pin of the processor.
[0013] The processor further comprises a ground pin, and a first capacitor is arranged between the power pin and the ground pin.
[0014] The power supply and the gate are connected through a first resistor, and the gate and the second pin are connected through a second resistor.
[0015] The power supply is grounded through a second capacitor.
[0016] The processor further comprises a voltage output pin for connecting a heat generating component.
[0017] The switch tube is a P-type field effect tube, the input end is a source, and the output end is a drain.
[0018] The first pin of the processor is connected to the output of the switch tube, the second pin is connected to the gate of the switch tube, the first pin is a power pin, and the second pin is an I / O output pin; a key, one end of which is connected to the power supply, and the other end is connected to the first pin of the processor. When needed, a current / voltage is output to the processor by operating the key, the second pin outputs a voltage to control the switch tube to open, and the power supply provides power to the processor through the switch tube. When not in use, the key is operated, the processor receives a switch signal, the second pin outputs an opposite voltage to disconnect the switch tube, the power supply cannot provide power to the processor through the switch tube, and the processor is in a power-off state and no longer consumes power, which is equivalent to the processor being in a zero-power state, avoiding power waste and improving the use efficiency of the power supply. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in the drawings without creative labor.
[0020] Fig. 1 The schematic diagram of the control circuit in the embodiment of the present design;
[0021] Fig. 2 The schematic diagram of the processor pin in the embodiment of the present design.
[0022] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.
[0025] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" throughout the text includes three solutions, taking A and / or B as an example, including A technical solution, B technical solution, and A and B simultaneously meet the technical solution; in addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection claimed by the present application.
[0026] The following Figs. 1-2A zero-power control circuit for electronic cigarettes includes a power supply, buttons, a field-effect transistor, a processor (chip), a first resistor (R1), a second resistor (R2), a first capacitor (C1), and a second capacitor (C2). The processor (chip) used in this design is a Proton PY32F030K28U6TR.
[0027] The circuit design includes: a power supply providing 3-5V; a switching transistor having a gate, an input terminal, and an output terminal, the input terminal being connected to the power supply; a processor including a first pin and a second pin, the first pin being connected to the output terminal of the switching transistor, the second pin being connected to the gate of the switching transistor, the first pin being a power supply pin (VDD), and the second pin being an I / O output pin; and a button, one end of which is connected to the power supply, and the other end of which is connected to the first pin of the processor.
[0028] The button is a single-pole double-throw switch, comprising a first switch 11 and a second switch 12. One end of the first switch 11 is connected to the power supply (VCC), and the other end is connected to the first pin. The processor also includes a third pin. One end of the second switch 12 is connected to the power supply (VCC), and the other end is connected to the third pin, which is the processor's ON / OFF switch pin. The button is pressed; when pressed, the first switch 11 and the second switch 12 operate simultaneously. The first switch 11 contacts the first pin, and the second switch 12 contacts the third pin. The power supply (VCC) provides power to the processor through the power supply pin (VDD). The power supply (VCC) is also connected to the ON / OFF switch pin through the second switch 12, facilitating the sending of a power-on or power-off signal to the processor by pressing the switch, enabling further actions by the processor. When the button is released after being pressed, it springs back outward to disconnect the electrical connection.
[0029] The processor also includes a ground pin (VSS). A first capacitor (C1) is provided between the power supply pin (VDD) and the ground pin (VSS). Excess charge on the processor can be transferred to ground. In order to form a protection circuit, since the first pin on the processor is connected to the output terminal of the switching transistor, the first capacitor (C1) can also filter and stabilize the voltage of the processor.
[0030] The power supply (VCC) and the gate are connected by a first resistor (R1), and the gate and the second pin are connected by a second resistor (R2). The series connection of the first resistor (R1) and the second resistor (R2) prevents the circuit between the power supply (VCC) and the second pin from being too large. The resistance of the first resistor (R1) is much larger than the resistance of the second resistor (R2), and can be approximated as a disconnect between the first resistor (R1) and the second resistor (R2).
[0031] The power supply (VCC) is grounded through a second capacitor (C2). Excess charge in the power supply (VCC) can be transferred to ground. Specifically, to form a protection circuit, the first resistor (R1), the input terminal of the switching transistor, the first switch 11, and the second switch 12 are connected to the power supply (VCC) through a first node 1, which is grounded through the second capacitor (C2). A second node 2 is located between the first resistor (R1) and the second resistor (R2), with its gate connected to the second node 2. A third node 3 is located between the first switch 11 and the power supply pin (VDD), connected to the output terminal of the switching transistor, and connected to one end of the first capacitor (C1). The other end of the first capacitor (C1) is grounded.
[0032] The switching transistor is a P-type field-effect transistor (also known as a PMOS transistor) or an N-type field-effect transistor (also known as an NMOS transistor). The processor also includes a voltage output pin for connecting to the heat-generating component. When the processor receives a start command, the processor outputs voltage to the heat-generating component, and the heat-generating component generates heat after being powered on.
[0033] The working principle of this design is briefly explained using a P-type field-effect transistor as an example. The input terminal is the source, and the output terminal is the drain. The gate (G) is connected to the second node 2, the source (S) is connected to the first node 1, and the drain (D) is connected to the third node 3. Pressing and releasing the button allows the power supply (VCC) to be connected to the power supply pin (VDD) via the first switch 11, while the second switch 12 is connected to the switch pin (ON / OFF). The power supply (VCC) provides a momentary voltage to the power supply pin (VDD). This voltage lasts for a very short time, and the processor begins to work. The processor outputs a low level through the I / O output pin, and this low level acts on the gate (G) of the P-type field-effect transistor. When the drain and source of the P-type field-effect transistor are connected, the power supply (VCC) is connected to the power supply pin (VDD) through the drain and source. The power supply (VCC) can supply power to the processor normally. When the low level is continuously applied to the gate (G) of the P-type field-effect transistor, the drain (D) and source (S) of the P-type field-effect transistor are in a conducting state, and the current flows from the source (S) to the drain (D). The processor can continuously output voltage to the heating component through the voltage output pin, or continuously output current to the heating component through the current output pin, so that the heating component is in working state. When vaping is not needed, press the button and then release it. The first switch 11 and the second switch 12 will activate simultaneously. The first switch 11 is connected to the power supply pin (VDD), and the second switch 12 is connected to the switch pin (ON / OFF). The processor receives the signal that the switch pin (ON / OFF) is triggered and sends a high-level signal through the I / O output pin. This high-level signal acts on the gate (G) of the P-type field-effect transistor, disconnecting the drain (D) and source (S) of the P-type field-effect transistor. The power supply (VCC) is disconnected from the power supply pin (VDD), and the power supply (VCC) is completely disconnected from the processor. The processor cannot provide power to the atomizing component, effectively preventing the processor from consuming power. When vaping is needed, press the button again. The processor will start working briefly. The processor sends a low-level signal through the I / O output pin. This low-level signal acts on the gate (G) of the P-type field-effect transistor, turning on the drain (D) and source (S) of the P-type field-effect transistor. The voltage is supplied to the processor through the P-type field-effect transistor, and the above process is repeated.
[0034] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.
Claims
1. A control circuit with zero power consumption, characterized in that, include: One power source; A switching transistor having a gate, an input terminal and an output terminal, wherein the input terminal is connected to a power supply; A processor includes a first pin and a second pin, the first pin being connected to the output terminal of a switching transistor, the second pin being connected to the gate of the switching transistor, the first pin being a power supply pin, and the second pin being an I / O output pin; One button connects to the power supply at one end and to the processor's first pin at the other end.
2. The control circuit with zero power consumption according to claim 1, characterized in that, The button is a single-pole double-throw switch, which includes a first switch and a second switch. One end of the first switch is connected to the power supply, and the other end of the first switch is connected to the first pin. The processor also includes a third pin. One end of the second switch is connected to the power supply, and the other end of the second switch is connected to the third pin.
3. The control circuit with zero power consumption according to claim 2, characterized in that, The third pin is the processor's switch pin.
4. The control circuit with zero power consumption according to claim 3, characterized in that, The processor also includes a ground pin, and a first capacitor is disposed between the power pin and the ground pin.
5. The control circuit with zero power consumption according to claim 1, characterized in that, The power supply and the gate are connected by a first resistor, and the gate and the second pin are connected by a second resistor.
6. The control circuit with zero power consumption according to claim 1, characterized in that, The power supply is grounded through a second capacitor.
7. The control circuit with zero power consumption according to claim 1, characterized in that, The processor also includes a voltage output pin for connecting to a heat-generating component.
8. The control circuit with zero power consumption according to claim 1, characterized in that, The switching transistor is a P-type field-effect transistor, the input terminal is the source, and the output terminal is the drain.