KR102165965B1 - Charging type power controller for Hydroxyl radical Air Purifier Module - Google Patents

Abstract

According to the inventive concept of the present invention, provided is a hydroxyl radical air purifier module which necessarily supplies power from the outside. Therefore, the hydroxyl radical air purifier module applies a rechargeable battery by considering portability and ease of power supply to constantly control an output power source even in charge and discharge modes and enable output power source adjustment by a PWM method so that radical generation output of a hydroxyl radical air purifier can be adjusted, and provides a rechargeable power controller having a means and a method for controlling an operation mode of an ultraviolet LED in the hydroxyl radical air purifier by power line communication.

Description

Charging type power controller for Hydroxyl radical Air Purifier Module}

The present invention is a means for supplying power to a desorbable hydroxyl radical air purification device capable of killing or suppressing viruses, harmful bacteria, odors, etc. in the breathing air by collecting moisture from human breath to generate hydroxyl radicals, and It relates to the control method.

The usefulness of the mask is to block the inflow of pollutants or fine dust in the air into the respiratory tract, but furthermore, the purpose of the mask is to prevent diseases in which viruses or harmful bacteria such as influenza are transmitted through the respiratory tract.

Most masks are made of non-woven fabric or electrostatic filter MB (melt blown), but the idea of a mask that purifies the breathing air by applying UV LED, plasma generator, and hydroxyl radical generator to the mask as a more active means. Is pending.

However, the above-mentioned mask with active means inevitably comes with a power supply device. In this device, there is a lack of application of ideas for the convenience of the power supply method, the continuity of the power supply, and the control method.

Patent literature (Patent Document 0001) Korean Registered Patent Publication No. 10-1130621

An object to be achieved according to an embodiment of the inventive concept is a device for supplying and controlling power for driving a radical generator and a UV LED PCB module that irradiates ultraviolet light in a hydroxyl radical air purifier module mounted on a mask. , Provides a rechargeable power controller that controls the output of the hydroxyl radical air purifier module based on a rechargeable battery and controls the hydroxyl radical air purifier module by power line communication on the wire to which the output power is supplied. There is.

According to an embodiment of the inventive concept as a means for solving the above-described problem, in the rechargeable power controller of the hydroxyl radical air purifying device module attached to the front mouth position of the mask or face mask,

The hydroxyl radical air purifier module includes a filter and includes a UV LED PCB module, a first photocatalyst collecting filter, a first conductive mesh, a spacer insulating the first conductive mesh and the second conductive mesh, a second conductive mesh, and a second They are located in the order of the photocatalyst collection filters.

In addition, the rechargeable power controller may provide a rechargeable power controller, characterized in that the power is supplied to the first conductive mesh and the second conductive mesh in a PWM method to control output.

In the rechargeable power controller, moisture in the breathing air is collected by the first photocatalyst collecting filter and the second photocatalyst collecting filter, so that between the first conductive mesh and the second conductive mesh is submerged, the amount of hydroxyl radicals generated can be adjusted in multiple steps. have.

The UV LED PCB module is a UV-C LED (200-280 nm) that directly sterilizes harmful bacteria in the air and a UV-A LED (315) that promotes a chemical reaction of a photocatalyst to have a catalytic action such as sterilization, deodorization, and decomposition of organisms. ~400nm) may be provided in combination.

A rechargeable power controller may be provided, characterized in that each LED having different UV wavelength bands mounted on the UV LED PCB module is controlled through power line communication.

In order to implement the power line communication, a rechargeable power controller having a PWM output unit for transmitting communication data and supplying output power by PWM switching on an output power line connected to the hydroxyl radical air purifier may be provided.

The rechargeable power controller may detect when a battery reaches a discharge voltage, display a battery discharge warning, and detect a charging mode and a discharge mode state to provide a boost control circuit and a control means.

According to the rechargeable power controller of the hydroxyl radical air purification device module of the present invention as described above,

Since power is supplied by a rechargeable battery, it is easy to carry, and when the battery is discharged, it provides convenience that can be easily charged with a nearby mobile phone charger.

Since it is possible to control the output power through output on, off, or PWM switching control, it is possible to select an operation method in various environments, providing more efficient battery discharge life.

1 is a block diagram of a mask equipped with a hydroxy radical air purification device module for a mask according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of major parts of a hydroxy radical air purifying device module for a mask according to an embodiment of the present invention,
3 is a perspective view and a cross-sectional view of a hydroxyl radical air purification apparatus according to an embodiment of the present invention,
4 is a perspective view illustrating a UV LED PCB module according to an embodiment of the present invention,
5 is an exploded perspective view of a radical generator according to an embodiment of the present invention,
6 is a block diagram of a rechargeable power controller circuit according to an embodiment of the present invention,
7 is a flow chart showing a control process of the rechargeable power controller according to an embodiment of the present invention,
8 is a view for explaining the PWM output waveform according to the power output step supplied to the hydroxyl radical air purification apparatus according to an embodiment of the present invention,
9 is a diagram illustrating a power line communication format and command values according to an embodiment of the present invention.
10 is a circuit block diagram of a UV LED PCB module according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention with reference to the accompanying drawings.

1 is a block diagram of a hydroxy radical air purifier module for a mask and a rechargeable power controller mounted on a mask according to an embodiment of the present invention.

1, a hydroxyl radical air purifier module 500 is mounted at a portion where the front mouth of a specific mask 50 is located, and a power line of a specified length is connected while wearing a portable device to turn on the output. , An embodiment of a rechargeable power controller capable of turning off and adjusting output power will be described.

As shown in Figure 2, as an exploded perspective view of the main parts of the hydroxyl radical air purification device, which is a counterpart device to be applied to the purpose of the rechargeable power controller 700 of the present invention, the front filter cap 100, the UV LED PCB module It consists of 200, a radical generator 500, a rear fixing cap 600, and four important parts.

3 is an exploded perspective view and a cross-sectional view of a hydroxyl radical air purification device as a counterpart device to which the rechargeable power controller 700 according to the inventive concept is applied. In order to show the inventive object of the rechargeable power controller, first , It is necessary to explain the structure and operation method of the hydroxy radical air purification device, which is a counterpart device.

The hydroxyl radical air purification device is configured by assembling a front filter cap 100 and a radical generator 500.

The front filter cap 100 includes a filter housing 120 including a filter 10 and a UV LED PCB module 200.

In addition, the inner space surface of the front filter cap 100 may be coated with titanium dioxide (TiO2).

Here, the UV LED PCB module 200 will be described in more detail with reference to FIGS. 4 and 10,

The UV LED PCB module 200 is mounted with a UV-C LED 220 having an ultraviolet wavelength (200 to 280 nm) that can directly sterilize viruses and harmful bacteria in the air by ultraviolet light irradiation on one surface of the PCB 240 .

In addition, a UV-A LED 230 capable of oxidatively decomposing odor substances, viruses, and harmful bacteria is mounted on the other surface by irradiating UV wavelength (315-400 nm) light, which makes the photocatalyst active, to cause a chemical reaction.

In addition, on the PCB 240, an input electrode unit 210 capable of receiving power is located at the top, and a constant voltage circuit unit 250, a communication receiving unit 270, and a control unit 260 for controlling the output of each LED are mounted. Has been.

In FIG. 5, a more detailed description of the radical generator 500 in the hydroxyl radical air device,

The first conductive mesh 400 is in close contact with one surface of the spacer 502 from the front opening 510 with the body case 501 as the center.

Next, after inserting the first electrode plate 401 in close contact with the first conductive mesh 400 and inserting the first electrode pin 402 into the matched hole of the power input unit 503, the first electrode pin 402 ), the first electrode plate 401, and the first conductive mesh 400 have an integrated structure by welding so as to conduct electricity.

Here, by inserting the first photocatalyst collecting filter 300, the first conductive mesh 400 is in close contact and fused.

On the other hand, from the rear opening 520 of the main body case 501, the second conductive mesh 410 is in close contact with the other surface of the spacer 502.

Then, the second electrode plate 411 is inserted into close contact with the second conductive mesh 410. At this time, the second electrode plate 411 is inserted through a hole through the top of the spacer 502 to supply power to the UV LED PCB module 200. The supply pins of the electrode plate 411 pass through.

Then, after inserting the second electrode pin 412 into the matched hole of the power input unit 503, the second electrode pin 412, the second electrode plate 411, and the second conductive mesh 410 are It has an integrated structure by welding as much as possible.

Here, by inserting the second photocatalyst collecting filter 310, the second conductive mesh 410 is in close contact and fused.

Each of the first conductive mesh 400 and the second conductive mesh 410 may be made of titanium, and may be coated with a platinum group element on the surface.

The first photocatalyst collecting filter 300 and the second photocatalyst collecting filter 310 may be made of a plastic or ceramic material, and are coated with titanium dioxide (TiO2) as a photocatalyst.

In addition, the first photocatalyst collecting filter 300 and the second photocatalyst collecting filter 310 are the same components. In the mesh-shaped grid frame constituting the collecting filter, the horizontal frames are curved wing-shaped collecting ribs 301 By protruding, a structure capable of collecting the moisture in the exhaust air by exhalation and external air of inhalation may be provided.

In more detail,

External air by inhalation and moisture in the exhaust air by exhalation are collected by the first photocatalyst collecting filter 300 and the second photocatalyst collecting filter 310, so that the first conductive mesh 400 and the second conductive mesh ( 410) is supplied with sufficient moisture.

Therefore, the spacer 502 is submerged between the first conductive mesh 400 and the second conductive mesh 410 facing both sides of the spacer 502, thereby providing a structure capable of maximizing generation of hydroxyl radicals by electrolysis.

In addition, the supply pin of the first electrode plate 401 and the supply pin of the second electrode plate 411 located on the inner surface of the front opening 510 of the radical generator, the front filter cap 100 of the radical generator. When inserted through the front opening 510, the input electrode portion 210 protruding above the front filter cap 100 is connected to match each other.

Thus, a hydroxyl radical air purifying device that is supplied with power to the UV LED PCB module 200 of the front filter cap 100 is provided.

Herein, referring to FIG. 3, the function and operation of the hydroxyl radical air purifier module described above will be described in detail,

As a first-stage air purification operation, external air by inhalation passes through the filter 10 installed in the filter storage unit 120 to filter out contaminated particles of a specific size, and to block and discharge droplets in the exhaled air. It works.

As a two-stage air purification operation, external air passing through the filter 10 or exhaust air due to exhalation is irradiated directly from the UV-C LED 220 of the UV-LED PCB module 200 located at the top. 280nm) by luminescent light, it performs an air purification function that promotes the killing of viruses and harmful bacteria in the air.

As a three-stage air purification operation, ultraviolet (315 ~ 400nm) light is emitted by the UV-A LED 230 of the UV-LED PCB module 200 located on the inside of the front filter cap 100, and the front filter cap 100 The photocatalytic titanium dioxide (TiO2) coated on the inner surface of is irradiated.

At this time, the photocatalytic action is activated to the air or moisture in contact with the surface to generate hydroxyl radicals, thereby promoting the killing action through oxidation reactions with pollutants, viruses and harmful bacteria in the air to purify the air.

In addition, ultraviolet light (315 ~ 400nm) of the UV-A LED 230 is irradiated to the first photocatalyst collecting filter 300 coated with titanium dioxide (TiO2).

At this time, the moisture condensed on the surface of the collecting rib 301 activates the photocatalytic action to generate hydroxyl radicals, thereby purifying the air by promoting a killing action through oxidation reactions with pollutants, viruses, and harmful bacteria in the air.

In the fourth-stage air purification operation, the moisture collected by the collecting ribs 301 of the first photocatalyst collecting filter 300 and the second photocatalyst collecting filter 310 is transferred to the first conductive mesh 400 facing both surfaces of the spacer 502. ) And the second conductive mesh 410, when a voltage is applied to the first conductive mesh 400 and the second conductive mesh 410, a sterilization operation is performed through an electrolysis process.

The sterilization operation is to destroy the cell membrane due to the potential difference inside and outside the cell membrane by applying voltage to the harmful bacteria.

Second, in the process of electrolysis of water, hydroxyl radicals are generated to promote the killing of pollutants, viruses, and harmful bacteria in the air to purify the air.

So far, based on the description of the structure and operation method of the hydroxyl radical air purification device, which is a counterpart device to which the rechargeable power controller 700 according to the inventive concept is applied, the power input unit 503 of the hydroxyl radical air purification device and the I will describe a rechargeable power controller connected by a power line.

6 is a circuit block diagram of the rechargeable power controller 700 of the present invention.

6, the charging control IC unit 702 for charging the power input through the DC input jack 701 from the power adapter, the lithium battery 703, the battery voltage detection unit 705, the microcomputer 760 A constant voltage rectification circuit unit 704 for supplying necessary power may be included.

Referring to FIG. 6, an ON/OFF key 710 that turns on and off the output power of a rechargeable power controller, and a power key that controls the output power of the hydroxyl radical air purifier module in four steps. (711), a UV-LED KEY 712 that controls the operation mode of the UV-C LED 220 and the UV-A LED 230 of the hydroxyl radical air purifier module, and selected by each key. An LED display unit 720 may be included to display the operation state.

Referring to FIG. 6, a booster circuit part 706 for generating an output power source by boosting to a specified voltage through boost EN of the microcomputer 760 according to the input voltage DC of the DC input jack 701 or the battery voltage BAT. Can be included.

In addition, a PWM output unit 740 that generates a PWM switching output power through the PWM port of the microcomputer 760 by selecting the power key 711 as an output power source, and the power input unit 503 of the hydroxyl radical air purifier An output jack 750 for supplying output power to the connected power line and a current detection unit 730 for monitoring the output current may be included.

Here, the current sensing unit 730 detects the output current and automatically stops the operation of the rechargeable power controller when a certain or more overcurrent flows or if a certain or more current does not flow for a certain period of time.

Here, a step of adjusting the output power through the PWM output unit 740 by selecting the POWER KEY 711 will be described with reference to FIG. 8.

Referring to FIG. 8, the output of 4 steps can be adjusted by the POWER KEY 711.

In more detail, the base frequency (F) of the PWM is calculated as a period of time (T) = 1/F. Within a period of time (T), the PWM output unit 740 is turned on for a specific time. By turning On, you can make 4 levels of output power.

Here, assuming one cycle time (T) is 100%,

The first step is PWM=0%, i.e. does not emit output,

In the second step, PWM = 50%, that is, the output is periodically turned on during T/2 time of one cycle time (T).

The third step is PWM = 75%, that is, the output is periodically turned on for 3T/4 hours of one cycle time (T).

Since the fourth step corresponds to PWM = 100%, that is, one cycle time (T), it continuously outputs On.

As described above, it provides a function to control the output of the hydroxyl radical air purifier in four steps.

In addition, in the UV LED PCB module 200 in the hydroxyl radical air purifier module, on and off (on) and off (on) and off (on) the UV-C LED 220 and the UV-A LED 230 having different UV wavelength bands. Off) and operation modes are provided by means of power line communication (PLC: Power Line Communication; hereinafter referred to as PLC).

The above-described power line communication (PLC) method will be described in more detail with reference to FIG. 9.

In FIG. 9, a key for changing the operation mode of the UV-C LED 220 and the UV-A LED 230 of the UV LED PCB module 200 by the UV-LED KEY 712 of the rechargeable power controller 700 When an input is received, the power waveform outputted by on and off of the PWM output unit 740 outputs a communication format as an output waveform as shown in FIG. 9.

In more detail, the communication format takes the format of three stages: STX, DATA, and ETX.

STX is an output waveform that starts communication, and is a signal format to be recognized by the UV LED PCB module 200 at the receiving side.

DATA is a control command value for the UV LED PCB module 200 and has a data format of BIT0 and BIT1 2bit.

ETX is an output waveform indicating that communication has ended, and is a signal format to be recognized by the UV LED PCB module 200 at the receiving side.

Here, the transmission speed is usually used in a unit called the baud rate, and communication is possible only when the signal waveform speeds of the transmitting side and the receiving side are synchronized.

So, if the transmission speed of the rechargeable power controller 700 is based on one cycle time (T) for the PWM base frequency (F) that controls the output power through the PWM output unit 740, it is large in units of a multiple of the T time. Thus, the UV LED PCB module 200 is to be distinguished from the PWM base frequency (F) so that it can be received.

Here, to start transmission from the rechargeable power controller 700, the PWM switching that generates the output power of the PWM output unit 740 is stopped, and the transmission mode is switched to turn the existing PWM output unit 740 on. Wait by.

Here, by the on and off of the PWM output unit 740, the STX signal is generated by outputting the high signal 3T, the low signal 3T, and the high signal 2T.

Here, the DATA signals of the PWM output unit 740 on and off are BIT0 and BIT1, and the data of BIT with a 2-bit data format are expressed as '0' and '1'.

1bit has a 6T time format. '0' data is composed of low signal 4T and high signal 2T, and '1' data is composed of low signal 2T and high signal 4T.

Here, by on and off of the PWM output unit 740, a low signal 3T and a high signal 3T are output to generate an ETX signal and communication is completed.

In addition, the PWM output unit 740 performs the PWM switching output operation of the original output power stage.

During power line communication (PLC) by the PWM output unit 740, the radical generator 500 in the hydroxyl radical air purifier module generates hydroxyl radicals by the output power in the form of communication waveforms.

In addition, an operation state of the UV LED PCB module 200 and a method of receiving communication while performing power line communication (PLC) by the PWM output unit 740 will be described with reference to FIG. 10.

Referring to FIG. 10, a circuit block diagram of a UV LED PCB module 200 is shown.

Here, the output power by PWM switching from the rechargeable power controller 700 or the output waveform of the power line communication (PLC) is transmitted through the power input unit 503 of the hydroxyl radical air purifier, and the input electrode unit of the UV LED PCB 200 ( 210).

Here, the input power waveform is smoothed by the capacitor C1 through the diode D1 of the constant voltage circuit unit 250 to generate a DC voltage for driving the LED.

Here, the role of the diode D1 prevents the smoothed DC voltage from flowing in reverse.

In addition, the capacitor C1 has a capacitor capacity having a discharge period greater than one period T time of the PWM waveform of the output power or 4 T time of the maximum waveform period of the power line communication (PLC).

Therefore, stable power is supplied to the UV LED PCB module 200 regardless of the PWM output power of the rechargeable power controller 700 or the output waveform of the power line communication (PLC).

In addition, the DC voltage passes through the constant voltage IC and is smoothed by the capacitor C2 to generate a VCC voltage that drives the control unit 260 including the microcomputer.

At this time, the reason why the power line communication (PLC) power waveform signal is not lost and can be input to the communication receiver 270 is because the diode D1 of the constant voltage circuit unit 250 prevents the DC voltage smoothed by the capacitor C1 from flowing in the reverse direction. to be.

Here, the communication receiving unit 270 includes a voltage comparator and a circuit is configured so that the control unit 260 can receive the communication format.

Here, the voltage comparator of the communication receiver 270 determines the reference voltage for discriminating the communication signal High and Low signals by Vref = (R1*VCC)/(R1+R2).

In addition, the input communication signal is a low-voltage communication signal of less than or equal to the voltage VCC driving the voltage comparator of the communication receiver 270 is converted by Vsig = (R3*Vs)/(R3+R4).

At this time, Vref and Vsig are used to properly select the ratio resistance values of the resistors R1 and R2 and the ratio resistance values of the resistors R3 and R4 in determining the criteria for discriminating the high signal or the low signal by a voltage comparator.

Here, if the low voltage communication signal Vsig is higher than the reference voltage Vref, it is recognized as a high signal, and if it is lower than Vref, the controller 260 recognizes it as a low signal.

By receiving the communication format as shown in FIG. 9 by the communication receiver 270, the control unit 260 of the UV LED PCB module 200 interprets the command values of the control command data BIT0 and BIT1 to control as follows. Carry out the command.

In the control command data, if BIT0 = 0 and BIT1 = 0, the UV-A LED 230 is turned off, and the UV-C LED 220 is also turned off.

In the control command data, when BIT0 = 1 and BIT1 = 0, the UV-A LED 230 is turned on and the UV-C LED 220 is also turned on.

In the control command data, when BIT0 = 1 and BIT1 = 1, the UV-A LED 230 and the UV-C LED 220 are alternately turned on and off.

7 is a flow chart showing a control process of charging, boosting, output, and power line communication in the rechargeable power controller 700 according to the present invention.

The control process of the rechargeable power controller will be described with reference to the flow chart.

S710: receiving a status signal STAT from the charging control IC unit 702 and confirming a charging mode or a discharging mode state;

S711: In the above-described discharge mode, the step of generating an output power source specified by the booster circuit unit 706 by step A boosting EN control corresponding to the BAT power supply, which is the battery voltage;

S720: In the above discharge mode state, it is determined whether the battery voltage BAT power has reached the discharge limit voltage, and if the discharge limit voltage is reached, stopping the PWM output power (S721) or, if the discharge limit voltage is not reached, the power supply Determining a moving direction to the step of determining the KEY state (S730);

S712: In the above charging mode, the step of generating an output power source specified by the booster circuit unit 706 by B step boost EN control corresponding to the DC power of the DC input jack 701;

S730: When the discharge limit voltage is not reached in the above control flow, or the ON/OFF key 710 is OFF in the charging mode state, stopping the PWM output power (S721) or the current sensing unit 730 Determining a moving direction in the overcurrent determination step (S740) by;

S740: The step of stopping the PWM output power (S721) or determining the operation status of the UV-LED KEY by determining the overcurrent detection in the current sensing unit 730 due to an abnormal operation in the hydroxyl radical air purifier supplied with the output power Determining a moving direction in step S750;

S750: When there is a command to control the operation of the LED of the UV LED PCB module 200 by the UV-LED KEY 712, the PWM output unit 740 is switched to the power line communication mode to perform power line communication (S800) or UV- If there is no key manipulation of the LED KEY (712), determining a direction of progress to a step (S760) of determining a predetermined PWM output step;

S800: transmitting a control command value in the communication format shown in Fig. 9 in the power line communication transmission mode by operating the UV-LED KEY 712;

S760: determining the output strength by the operation of the power key 711;

S761: When the output is “strong” by the operation of the POWER KEY (711), the output power performs PWM 100% output stage;

S771: When the output is “in middle” by the operation of the POWER KEY (711), the output power performs PWM 75% output stage;

S781: When the output is “weak” by the operation of the POWER KEY (711), the output power performs PWM 50% output step;

A method of controlling a rechargeable power controller of a hydroxyl radical air purifier module comprising a.

As described above, embodiments of the present invention have been disclosed in the present specification and drawings, and although specific terms are used, these are merely used in a general meaning to easily describe the technical content of the present invention and to aid understanding of the present invention. It is not intended to limit the scope of. In addition to the embodiments disclosed herein, it is obvious to those of ordinary skill in the art that other modifications based on the technical idea of the present invention are possible.

10: filter
50: mask
100: front filter cap
200: UV LED PCB module
500: radical generator
600: rear fixing cap
700: rechargeable power controller

Claims (4)

In the rechargeable power controller of the hydroxyl radical air purifier module,

A charge control IC unit including a DC input jack and a rechargeable battery receiving external power, and controlling charging of the battery when charging, and monitoring a charging mode and a discharging mode state;

A battery voltage detection unit monitoring the remaining amount of power of the battery;

A booster circuit unit for boosting DC input power or battery power to an output power source;

A PWM output unit for outputting an output power source as an output power or a power line communication power waveform;

A current sensing unit monitoring the current of the output power;

Receives ON/OFF KEY, POWER KEY, UV-LED KEY operation, outputs battery discharge warning, output power size, and UV-LED control status to the LED display unit, and controls to always output a constant output power source from the booster circuit unit. And, the PWM output is controlled so that the output power is adjusted in multiple stages by operating the power key, and when the UV-LED key is operated, the multi-level output power supply through the PWM output is stopped and turned on. A microcomputer with a built-in power line communication method for controlling the UV LED operation of the UV LED PCB module with output power by controlling the PWM output by a signal obtained by adjusting the duty ratio of the over and off signals; A rechargeable power controller for use in a hydroxyl radical air purifier module, comprising: a.
The method according to claim 1,

The microcomputer recognizes the charging mode or discharge mode status from the charge control IC through the microcomputer's STAT port according to whether external power is connected to the DC input jack, and outputs DC input power or battery (BAT) power. Through the control input port (EN) of the booster circuit part boosting with a power source and the boost control output port (step-up EN) of the microcomputer, the booster circuit part outputs DC input power to the output power source in charging mode, and outputs DC input power to the output power source in discharge mode. A rechargeable power controller for use in a hydroxyl radical air purifier module, characterized in that controlling to output an output power source by boosting battery (BAT) power equal to the voltage level of DC input power.
The method according to claim 1,

According to the output power size adjustment by the power key, the micom turns on the PWM output part between 0 and 100% for one period T time corresponding to the PWM switching base frequency in multiple stages. Control, and when the UV LED operation method of the UV LED PCB module is changed by the operation of the UV-LED key, the output power output by the PWM output unit is stopped, and the PWM switching base frequency is a multiple of the time T By adjusting the duty ratio of the On and Off signals, the PWM output is energized to supply output power to the UV LED PCB module or radical generator, while on and off. (Off) The UV LED operation control command output by a signal combination of data bits "0" and "1" agreed according to the duty of the output power is communicated with the power line so that the UV LED PCB module can recognize it. A rechargeable power controller for use in a hydroxyl radical air purifier module, characterized in that.

The method according to claim 1,

The micom controls the PWM output unit to supply output power to the UV LED PCB module or radical generator, and the current sensing unit connected to the ground (-) terminal of the output jack to the output current sensing port (A/D Cur) of the micom. A rechargeable power controller for use in a hydroxyl radical air purifier module, characterized in that the PWM output unit is stopped when it is determined that an overcurrent of a certain amount or more flows through monitoring.

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