KR102129251B1 - Battery driving type plasma ion generating apparatus - Google Patents

Abstract

The battery-driven plasma ion generator according to the present invention includes a battery that outputs a first voltage; A step-down unit which step-downs the first voltage to output a step-down voltage; A booster configured to boost the first voltage to output a boosted voltage; An ion generating module that generates plasma ions by receiving the boosted voltage and generating a high voltage; A blower fan that operates by receiving the step-down voltage and causes the generated plasma ions to diffuse; And an MCU that operates by receiving the step-down voltage and controls the on/off of the blower fan and the ion generating module to be repeated periodically.

Description

Battery driving type plasma ion generating apparatus

The present invention relates to a plasma ion generator, and more particularly, to a battery-driven plasma ion generator using a battery as a power source.

As the environmental pollution becomes serious, people who have various respiratory diseases or allergic reactions are increasing by the polluted air, and accordingly, various attempts to purify the polluted air by generating negative ions as a means to improve the air quality Is being carried out.

Types of ions have positive and negative ions, and negative ions mean a state in which molecules such as oxygen and nitrogen in the air have a negative charge.

Recently, it is known that anions are effective in removing dust, odors, and harmful chemicals, and are considered to be beneficial to the human body. Accordingly, in recent years, there are increasing cases where ion generating devices are attached to electronic products such as household air purifying devices, hair dryers, water purifiers, air purifying devices for vehicles, and air conditioning devices for cooling or heating indoors.

In addition, on the basis of the fact that it is not possible to effectively remove floating bacteria in the air only by generating anions, an ion generating device that generates cations in addition to anions is also in the spotlight.

Many ion generators that have been introduced in the past are often added in the form of ion generating functions to air cleaners or air purifiers using AC power.

However, since the user does not only live in a specific space, the ion generator may be implemented to be portable by the user so that it can be used in various places. In addition, paying attention to the function of removing dust, odor and harmful chemicals, the ion generating device may be used for the purpose of removing dust and odor and air purification in a closed space such as a closet or shoe rack.

In the case of a portable ion generator or an ion generator for use in an enclosed space such as a closet or shoe rack, since it is impossible to supply AC power at all times, it must be manufactured in a battery-driven type that uses a battery as a power source. However, such a battery-driven ion generator has inefficiency and hassle, such as the battery is quickly consumed and needs to be replaced or charged frequently, and has not yet been commercialized due to various other technical problems.

Accordingly, the technical problem to be achieved by the present invention is to minimize the battery power consumption, can be used for a long time without replacing or charging the battery, and a battery-powered plasma ion generator capable of solving the technical problems caused by using the battery as a power source To provide.

The battery-driven plasma ion generator according to the present invention for solving the above technical problem includes: a battery outputting a first voltage; A step-down unit which step-downs the first voltage to output a step-down voltage; A booster configured to boost the first voltage to output a boosted voltage; An ion generating module that generates plasma ions by receiving the boosted voltage and generating a high voltage; A blower fan that operates by receiving the step-down voltage and causes the generated plasma ions to diffuse; And a micro controller unit (MCU) that operates by receiving the step-down voltage and controls the on/off of the blower fan and the ion generating module to be periodically repeated.

The MCU may be controlled such that there is a time difference between the on time of the blowing fan and the on time of the ion generation module.

The MCU may control the ion generating module to be turned on first, and then the fan to be turned on with the time difference.

The battery-powered plasma ion generator includes: a first switching circuit that transmits or blocks the step-down voltage from the step-down unit to the blowing fan according to a control signal; And a second switching circuit transmitting or blocking the first voltage from the battery to the booster according to a control signal, wherein the MCU controls the first switching circuit with a first control signal to reduce the step-down voltage. The transmission/blocking of the fan to the fan is periodically repeated, and the second switching signal is used to control the second switching circuit so that the transmission/blocking of the first voltage to the booster is periodically repeated. The fan and the ion generating module may be controlled to be repeatedly turned on/off.

The MCU may apply the first control signal and the second control signal with a time difference.

The MCU may first apply the second control signal and then apply the first control signal at the time difference.

The first switching circuit, the first control signal is applied to the base, the emitter is connected to ground, the collector is a transistor connected to the ground terminal of the blowing fan, one end is connected to the collector and the other end of the blowing fan It may include a Schottky diode connected to the power terminal and connected to the output terminal of the step-down portion.

In the second switching circuit, the second control signal is applied to the base and the emitter is connected to a ground, a transistor is connected to a gate, a collector is connected to the transistor, a source is connected to the output terminal of the battery, and a drain is to the booster. It may include a field effect transistor (FET) connected to the input terminal.

According to the present invention described above, the on/off of the ion generating module generating plasma ions and the blowing fan allowing plasma ions to be diffused is periodically repeated, thereby minimizing battery power consumption of the battery-powered plasma ion generator to minimize battery consumption. There is an effect that can be used for a long time without replacement or charging.

In addition, by allowing a time difference between the on time of the blowing fan and the on time of the ion generating module, stable operation is possible by preventing the reset phenomenon of the MCU that may be caused by the simultaneous turning on of the blowing fan and the ion generating module. It works.

1 shows a configuration of a battery-powered plasma ion generator according to an embodiment of the present invention.
2 shows a circuit diagram of a first switching circuit 410 according to an embodiment of the present invention.
3 shows a circuit diagram of a second switching circuit 510 according to an embodiment of the present invention.
4 is a timing diagram of a first control signal and a second control signal of the MCU 200 according to an embodiment of the present invention.
5 shows the output voltage and the battery consumption current of the step-down unit 300 when the blower fan 400 and the ion generating module 600 are turned on at the same time.
6 is a timing diagram of a first control signal and a second control signal of the MCU 200 according to an improved embodiment of the present invention.
FIG. 7 shows the output voltage and the battery consumption current of the step-down unit 300 when the ion generating module 600 is first turned on and then the blower fan 400 is turned on with a time difference.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In the following description and the accompanying drawings, elements that are substantially the same are denoted by the same reference numerals, and redundant description will be omitted. In addition, in the description of the present invention, when it is determined that detailed descriptions of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

1 shows a configuration of a battery-powered plasma ion generator (hereinafter referred to as an “ion generator”) according to an embodiment of the present invention.

Referring to Figure 1, the ion generating device according to an embodiment of the present invention, the battery 100, the microcontroller unit (MCU) 200, the step-down unit 300, the blowing fan 400, the boosting unit 500 , Ion generation module 600, a first switching circuit 410, may include a second switching circuit 510.

The battery 100 supplies power for the operation of the MCU 200, the blowing fan 400, and the ion generating module 600. The battery 100 is a rechargeable battery, and may be, for example, a lithium polymer battery or a lithium ion battery. The battery 100 outputs a first voltage (V _bat ), and the first voltage (V _bat ) may be 3.5 to 4.2 V depending on a state of charge of the battery 100.

The step-down unit 300 outputs the step-down voltage V _down by stepping down the first voltage V _bat . The step-down unit 300 may include, for example, a low drop out (LDO) regulator. The step-down voltage V _down may be, for example, about 3.3V. The step-down voltage V _down is supplied to the MCU 200 and the blowing fan 400.

The boosting unit 500 _boosts the first voltage V _bat to output the boosted voltage V _up . The booster 500 may include, for example, a boost regulator. The boost voltage V _up may be, for example, about 12V. The boost voltage V _up is supplied to the ion generating module 600.

The ion generating module 600 operates by receiving a boost voltage V _up and generates plasma ions by generating a high voltage and applying it to the electrode. For example, the ion generating module 600 generates positive and negative high voltages (approximately ㅁ5,000 V) to generate positive and negative ions by applying to the positive and negative electrodes, respectively.

The blower fan 400 operates by receiving a step-down voltage V _down and blows the positive and negative electrodes of the ion generating module 600 so that the plasma ions generated therefrom are diffused.

The MCU 200 controls the overall operation of the ion generating device, operates by receiving a step-down voltage (V _down ), and the blowing fan 400 and the ion generating module 600 do not always turn on/on. The off is controlled to repeat periodically.

The ion generating device according to the embodiment of the present invention is used for the purpose of removing dust, odors and harmful chemicals, or purifying air, so it is not necessary to continuously generate ions. As in the embodiment of the present invention, even if the on/off of the blower fan 400 and the ion generating module 600 is periodically repeated, even when generating ions only during the on state, the above-described function may be achieved. While the blower fan 400 and the ion generating module 600 are in an off state, power consumption of the battery 100 is minimized, so it can be used for a long time without replacing or charging the battery.

The on/off repetition period and duration may be appropriately determined according to required performance and power consumption, and may be settable by a user. For example, the on duration of the blowing fan 400 and the ion generation module 600 may be 10 seconds to 30 seconds, and the off duration may be 100 seconds to 300 seconds. For example, the on duration may be 20 seconds, the off duration may be 220 seconds, and thus the repetition period may be 240 seconds.

For on/off control of the blower fan 400 and the ion generating module 600, a first switching circuit 410 is provided between the step-down unit 300 and the blower fan 400, and the battery 100 and the booster A second switching circuit 510 may be provided between the units 500.

The first switching circuit 410 may transmit or block the step-down voltage V _down from the step-down unit 300 to the blowing fan 400 according to the applied control signal. For example, the first switching circuit 410 may transmit the step-down voltage V _down from the step-down unit 300 to the blowing fan 400 only while the control signal is applied.

The second switching circuit 510 may transmit or block the first voltage V _bat from the battery 100 to the booster 500 according to the applied control signal. For example, the second switching circuit 510 may transmit the first voltage V _bat from the battery 100 to the booster 500 only while the control signal is applied.

The MCU 200 controls the first switching circuit 410 with the first control signal CS ₁ to periodically transmit/block the step-down voltage V _down to the blowing fan 400, thereby repeatedly blowing the blowing fan. The on/off of 400 may be repeated periodically.

In addition, the MCU 200 controls the second switching circuit 510 with the second control signal CS ₂ so that the transfer/blocking of the first voltage V _bat to the booster 500 is periodically repeated, The on/off of the ion generating module 600 may be periodically repeated through the periodic repetition of the transfer/blocking of the boosting voltage V _up from the booster 500 to the ion generating module 600. .

2 shows a circuit diagram of a first switching circuit 410 according to an embodiment of the present invention.

The first switching circuit 410, the first control signal (CS ₁ ) of the MCU 200 is applied to the base through the first resistor (R1), the emitter is connected to the ground, the collector is the ground of the blower fan 400 A transistor Q1 connected to the terminal GND and a second resistor R2 connected between the base and the emitter, and one end connected to the collector of the transistor Q1 and the other end to the power terminal Vcc of the blower fan 400 ) And the Schottky diode D connected to the output terminal V _down of the step-down unit 300 through the third resistor R3.

When the MCU 200 applies the first control signal CS ₁ to the base of the transistor Q1, the collector and the emitter of the transistor Q1 are conducted to remove the output from the output terminal V _down of the step-down unit 300. 3 Resistor (R3), the power terminal (Vcc) of the blower fan 400, the internal circuit of the blower fan 400, the ground terminal (GND) of the blower fan 400, and the current flowing through the circuit connected to the ground to blow air The fan 400 is turned on. When the first control signal CS ₁ is not applied, the collector and the emitter of the transistor Q1 are in an open state, so that no current flows, so the blower fan 400 is turned off. The Schottky diode D serves to prevent the reverse voltage from being applied between the power terminal Vcc and the ground terminal GND of the blower fan 400.

3 shows a circuit diagram of a second switching circuit 510 according to an embodiment of the present invention.

The second switching circuit 510, the second control signal (CS ₂ ) of the MCU 200 is applied to the base through the fourth resistor (R4), the emitter is connected to the ground, the collector is a FET (Field Effect Transistor) ( A transistor Q2 connected to the gate of Q3), a gate connected to the collector of transistor Q2, a source connected to the output terminal V _bat of the battery 100, and a fifth resistor R5 between the gate and the source This connection may include a FET Q3 connected to the drain through the sixth resistor R6 to the input terminal of the booster 510.

When the MCU 200 applies the second control signal CS ₂ to the base of the transistor Q2, the collector and emitter of the transistor Q2 are conducted, and current flows through the gate of the FET Q3 and the FET ( The source and drain of Q3) are conducted to supply the first voltage V _bat of the battery 100 to the booster 500. Then, since the booster 500 _boosts the first voltage V _bat and supplies the boosted voltage V _up to the ion generating module 600, the ion generating module 600 is turned on. When the second control signal CS ₂ is not applied, the collector and emitter of the transistor Q2 are in an open state, so that no current flows to the gate of the FET Q3 and the source and drain of the Q5 (FET) are in an open state. As a result, the first voltage V _bat of the battery 100 is not supplied to the booster 500. Then, since the boosting unit 500 does not output the boosting voltage V _up , the ion generating module 510 is turned off.

4 is a timing diagram of the first control signal CS ₁ and the second control signal CS ₂ of the MCU 200 according to an embodiment of the present invention, and the first control signal CS ₁ and the second It indicates that the control signal (CS ₂ ) is identical or synchronized. The blowing fan 400 is turned on/off by the first control signal CS ₁ , and the ion generating module 600 is turned on/off by the second control signal CS ₂ . Therefore, the blowing fan 400 and the ion generating module 600 are turned on and off at the same time.

FIG. 5 shows the output voltage V _down and the battery consumption current of the step-down unit 300 when the blower fan 400 and the ion generating module 600 are turned on at the same time. When the blower fan 400 and the ion generating module 600 are turned on at the same time, the power consumption suddenly increases, so that an inrush current of about 5 A or more may occur in the battery. At this time, if the output voltage (V _bat ) of the battery 100 is low (may be lowered depending on the state of charge of the battery), the output voltage (V _down ) of the step-down unit 300 is the minimum voltage for driving the MCU 200 A phenomenon in which the MCU 200 is reset may occur when the MCU reset voltage (eg, about 1.98 V) goes down.

In order to improve this phenomenon, according to an improved embodiment of the present invention, the MCU 200 controls the ion generating module 600 to be turned on first, and then the blower fan 400 is turned on with a time difference. That is, the on/off timing of the ion generating module 600 and the blowing fan 400 are controlled differently. Depending on the embodiment, the blowing fan 400 may be controlled to turn on the ion generating module 600 at a time difference after being turned on first.

6 is a timing diagram of the first control signal CS ₁ and the second control signal CS ₂ of the MCU 200 according to the improved embodiment of the present invention. Referring to FIG. 6, the MCU 200 applies a second control signal CS2 to the second switching circuit 510 and then places a time difference Δt, and then applies the first control signal to the first switching circuit 410 ( CS ₁ ) is applied. The blowing fan 400 is turned on/off by the first control signal CS ₁ , and the ion generating module 600 is turned on/off by the second control signal CS ₂ , so that the ion generating module 600 is After being turned on, the blower fan 400 is turned on with a time difference (△t). According to an embodiment, the first control signal CS ₁ is applied to the first switching circuit 410 and then the second control signal CS2 is applied to the second switching circuit 510 with a time difference Δt. You may. In this case, after the blowing fan 400 is turned on, the ion generating module 600 will be turned on with a time difference (Δt).

7 shows the output voltage (V _down ) and the battery consumption current of the step-down unit 300 when the ion generating module 600 is first turned on and then the blower fan 400 is turned on with a time difference. In this case, since the power consumption increases less abruptly, the inrush current does not occur or is alleviated. Therefore, even if the output voltage (V _bat ) of the battery 100 decreases, the output voltage (V _down ) of the step-down unit 300 does not fall below the MCU reset voltage, causing the MCU 200 to be reset. I never do that.

The time difference Δt (ie, the time difference between the first control signal CS ₁ and the second control signal CS ₂ ) at the time when the ion generating module 600 and the blowing fan 400 are turned on is the battery 100. When the output voltage V _bat of is minimum, the minimum value of the output voltage V _down of the step-down unit 300 may be set to a value sufficiently larger than the MCU reset voltage. For example, when the MCU reset voltage is 1.98V, the time difference Δt may be set so that the minimum value of the output voltage V _down of the step-down unit 300 becomes about 2.4V. According to an embodiment, the time difference Δt may be set from 1 ms to 100 ms.

The device according to embodiments of the present invention includes a processor, a memory storing and executing program data, a permanent storage such as a disk drive, a communication port communicating with an external device, a touch panel, a key, and a button And a user interface device. Methods implemented by a software module or algorithm may be stored on a computer-readable recording medium as computer-readable codes or program instructions executable on the processor. Here, as a computer-readable recording medium, a magnetic storage medium (eg, read-only memory (ROM), random-access memory (RAM), floppy disk, hard disk, etc.) and optical reading medium (eg, CD-ROM (CD-ROM) ), DVD (Digital Versatile Disc). The computer-readable recording medium can be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion. The medium is readable by a computer, stored in memory, and can be executed by a processor.

Embodiments of the present invention may be represented by functional block configurations and various processing steps. These functional blocks can be implemented with various numbers of hardware or/and software configurations that perform specific functions. For example, an embodiment may be implemented in an integrated circuit configuration such as memory, processing, logic, look-up table, etc., capable of executing various functions by control of one or more microprocessors or other control devices. You can hire them. Similar to the components of the present invention that can be executed with software programming or software components, embodiments include C, C++, including various algorithms implemented with a combination of data structures, processes, routines or other programming components. , Can be implemented in programming or scripting languages such as Java, assembler, etc. Functional aspects can be implemented with algorithms running on one or more processors. In addition, embodiments may employ conventional techniques for electronic environment setting, signal processing, and/or data processing. Terms such as "mechanism", "element", "means", and "configuration" can be used widely and are not limited to mechanical and physical configurations. The term may include the meaning of a series of routines of software in connection with a processor or the like.

The specific implementations described in the embodiments are examples, and do not limit the scope of the embodiments in any way. For brevity of the specification, descriptions of conventional electronic configurations, control systems, software, and other functional aspects of the systems may be omitted. In addition, the connection or connection members of the lines between the components shown in the drawings are illustrative examples of functional connections and/or physical or circuit connections, and in the actual device, alternative or additional various functional connections, physical It can be represented as a connection, or circuit connections. In addition, unless specifically mentioned, such as "essential", "important", etc., it may not be a necessary component for the application of the present invention.

So far, the present invention has been focused on the preferred embodiments. Those skilled in the art to which the present invention pertains will understand that the present invention may be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered in terms of explanation, not limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the equivalent range should be interpreted as being included in the present invention.

Claims (8)

A battery outputting a first voltage;
A step-down unit which step-downs the first voltage to output a step-down voltage;
A booster configured to boost the first voltage to output a boosted voltage;
An ion generating module that generates plasma ions by receiving the boosted voltage and generating a high voltage;
A blower fan that operates by receiving the step-down voltage and causes the generated plasma ions to diffuse;
An MCU (Micro Controller Unit) that operates by receiving the step-down voltage and controls the on/off of the blower fan and the ion generating module to be repeated periodically;
A first switching circuit for transmitting or blocking the step-down voltage from the step-down unit to the blowing fan according to a control signal; And
And a second switching circuit transmitting or blocking the first voltage from the battery to the booster according to a control signal,
The MCU controls the first switching circuit with a first control signal so that the transmission/blocking of the step-down voltage to the blowing fan is periodically repeated, and the second switching signal is controlled to control the second switching circuit. A battery-powered plasma ion generator that controls the on/off of the blower fan and the ion generating module to be repeated periodically by allowing the first voltage to be transferred/blocked to the booster periodically. According to claim 1,
The MCU is a battery-driven plasma ion generating device that controls so that there is a time difference between the on time of the blowing fan and the on time of the ion generating module. According to claim 2,
The MCU is a battery-powered plasma ion generator that controls the ion generating module to be turned on first and then the blower fan to be turned on with the time difference. delete According to claim 1,
The MCU is a battery-driven plasma ion generator for applying the first control signal and the second control signal with a time difference. The method of claim 5,
The MCU, a battery-driven plasma ion generator for applying the second control signal first and then applying the first control signal at the time difference. According to claim 1,
The first switching circuit,
The first control signal is applied to the base, the emitter is connected to ground, and the collector is a transistor connected to the ground terminal of the blowing fan,
A battery-powered plasma ion generator comprising a Schottky diode, one end of which is connected to the collector, the other end of which is connected to the power terminal of the blower fan and to the output terminal of the step-down unit. According to claim 1,
The second switching circuit,
The second control signal is applied to the base and the emitter is a transistor connected to ground,
A battery-powered plasma ion generator comprising a FET (Field Effect Transistor) in which a gate is connected to the collector of the transistor, a source is connected to the output terminal of the battery, and a drain is connected to the input terminal of the booster.

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