KR100782736B1 - Apparatus for protecting a rechargeable battery from overdischarging and method therefor - Google Patents

Abstract

An apparatus for protecting a rechargeable battery from overdischarging and a method therefor are provided to prevent the rechargeable battery from overdischarging by turning a switch member installed on an output terminal of the rechargeable battery. An apparatus for protecting a rechargeable battery(240) from overdischarging includes an AC/DC converting unit(210), a DC/DC converting unit(220), a charge circuit unit(230), the rechargeable battery, a switch member(250), and a control unit(290). The AC/DC converting unit receives an external constant AC power and converts the received AC power into a DC power. The DC/DC converting unit receives the DC power outputted through the AC/DC converting unit, and boosts or drops the DC power to a required DC power and supplies the boosted or dropped DC power to a main circuit unit including the control unit. The charge circuit unit stabilizes the DC power outputted through the AC/DC converting unit and supplies the stabilized DC power to the rechargeable battery to charge the rechargeable battery. The rechargeable battery supplies a charge power to the main circuit unit of an electronic apparatus through the DC/DC converting unit at the time of cutting off the constant AC power.

Description

Apparatus and method for preventing overdischarge of rechargeable battery {APPARATUS FOR PROTECTING A RECHARGEABLE BATTERY FROM OVERDISCHARGING AND METHOD THEREFOR}

1 is a view showing the configuration of a general zoning device.

2 is a diagram showing an example in which the overdischarge prevention device for a rechargeable battery according to the present invention is applied to an electronic device.

3 is a view showing an example in which the over-discharge prevention device of the charge battery according to the present invention is applied to the zone setter.

4 is a flowchart illustrating a method of preventing overdischarge of a rechargeable battery in the zone setter shown in FIG. 3.

* Explanation of symbols for the main parts of the drawings

100: electronic device 200: zoning device

110,210: AC / DC converter 120,220: DC / DC converter

130,230: charging circuit unit 140,240: rechargeable battery

150, 250: switching means 160: main circuit

260: memory 270: movement detection sensor

280: wireless transmission and reception unit 290: control unit

The present invention relates to a device having a rechargeable battery, and more particularly, a device using commercial AC power as a main power source and using a rechargeable battery as a temporary power source when the commercial AC power is interrupted (meaning various electric / electronic / communication devices; Hereinafter, the present invention relates to an overdischarge prevention device for a rechargeable battery and a method thereof for preventing a discharge of a rechargeable battery in a distribution process after shipment of the electronic device.

Most rechargeable batteries do not recharge when the charged power is over-discharged or shorten the life of the rechargeable batteries. Therefore, an over-discharge blocking circuit is used to block discharge when the voltage of the rechargeable battery falls below a certain voltage.

In addition, in the case of an electronic device having a device that operates by receiving power from a rechargeable battery when the commercial AC power is cut off, the rechargeable battery is detachably configured to prevent overcharging of the rechargeable battery during distribution. It is distributed separately or distributed by installing an on / off switch at the output terminal of the rechargeable battery and turning the switch off.

However, for some reason, the rechargeable battery should be manufactured in a fixed type that is fixed to the inside of the electronic device, rather than a removable type that can be detached by a user. For an electronic device that does not have an on / off switch, the rechargeable battery is stored in a circuit during distribution. There is a risk of overdischarge because it is always connected.

Even if the over-discharge cut-off circuit is installed in the rechargeable battery, the over-discharge cut-off circuit cuts the discharge of the rechargeable battery only when the charge battery of the electronic device is almost consumed and the output voltage is consumed to the over-discharge prevention voltage. Even if you buy the electronic device and try to use it immediately, the electronic device is inconvenient to operate only when it is charged for a certain time.

As an electronic device using commercial AC power as a main power source and a rechargeable battery as a temporary power source when the commercial AC power is cut off, and the on / off switch is not provided at the output terminal of the rechargeable battery, for example, the zone of LG Telecom There is a setter.

The zone setter is a small short-range wireless communication device used by connecting to an AC outlet, and includes a short-range wireless communication means to perform short-range wireless communication with a mobile communication terminal through the short-range wireless communication means, and the range of short-range wireless communication is possible. A device is set as a service zone for a mobile communication terminal.

The general configuration of such a zone setter is shown in FIG.

As shown in FIG. 1, the zone setter 10 includes a memory 11, a movement detection sensor 12, a wireless transmission / reception unit 13, a power supply unit 14, and a controller 15. .

The memory 11 is a nonvolatile memory in which a registration flag indicating whether a program required for service zone setting and zone service use and use of the zone setter is registered.

The movement sensor 12 is composed of an acceleration sensor or a GPS receiver for preventing a subscriber from changing the registered service zone arbitrarily after the use registration of the zone setter 10.

The wireless transmitter / receiver 13 is configured for short-range wireless communication with the mobile communication terminal 1, and the wireless transmitter / receiver 13 is constituted by short-range wireless communication means such as Bluetooth.

The power supply unit 14 receives a commercial AC power and converts the DC power output through the AC / DC converter 14-1 and the AC / DC converter 14-1 into a DC power source. DC / DC converter 14-2 for supplying voltage to the internal circuit of zone setter 10 after boosting or stepping down to the required DC voltage and moving detection sensor when the commercial AC power is not applied. Charge battery 14-3, which supplies operating power to the 12 and the controller 15, and DC power output through the AC / DC converter 14-1, and receives the charge battery 14-3. It is composed of a battery charging unit (14-4) to charge and prevent overcharging of the charging battery (14-3).

The rechargeable battery 14-3 supplies operating power to the movement detecting sensor 12 even when no external commercial AC power is applied. Accordingly, even when a commercial AC power is not applied to the movement detecting sensor 12, for example, even when a subscriber intentionally shuts down and moves the power of the zoning device 10, the operating power is supplied to the movement detecting sensor 12. ) Can accurately calculate the moving distance of the zone setter 10.

The controller 15 controls the memory 11, the movement detection sensor 12, the wireless transmitter / receiver 13, and the power supply unit 14. In particular, the controller 15 registers the use of the mobile communication terminal 1. According to the procedure, control for transmitting zone setting device identification to the mobile communication terminal 1 and control for use registration according to the use registration request of the mobile communication terminal 1 are performed. .

The mobile communication terminal 1 may check whether the mobile communication terminal 1 is in the service zone of the zone setter 10 by communicating with the zone setter 10 configured as described above, and if it is in the service zone of the zone setter 10, Zone services may be provided.

Zone setters that provide such zone services are designed to plug the AC plug directly into the AC outlet for ease of use, but restrict the user's arbitrarily changing or carrying the installation location at the time of registration. Because it is a device that does not have an on / off switch that can cut off the power supplied to the movement sensor and the control unit arbitrarily.

Therefore, in the case of the zone setter, the purpose of the rechargeable battery is to allow the movement sensor to detect the movement of the zone setter when the commercial AC power is cut off, so that the movement of the rechargeable battery can be performed even in the distribution process. The current consumption is so high that when a consumer purchases a battery, the rechargeable battery is completely discharged and there is a high possibility of failure.

To prevent this, even if an over-discharge breaker circuit is installed on the charge battery of the zonalizer to check the charge power level of the charge battery to block discharge, the over-discharge breaker circuit blocks the discharge of the charge battery after the charge battery is almost exhausted. Therefore, when the consumer purchases, the rechargeable battery is almost discharged. If the commercial AC power supplied to the zone setter is cut off immediately after registration of the use of the zone setter, the rechargeable battery fails to supply the operating power properly with the movement detection sensor. There was a problem that the movement sensor could not accurately detect the movement of the zone setter.

An object of the present invention is to install a switching means at the output terminal of the rechargeable battery in an electronic device such as a zoner using commercial AC power as a main power source and using a rechargeable battery as a temporary power source when the commercial AC power is interrupted. When the device is shipped, the switching means is turned off and the switching means is turned on by detecting the use of the electronic device or registering the use of the device, thereby overcharging the rechargeable battery to prevent over discharge of the rechargeable battery generated in the distribution process of the electronic device. The present invention provides a total prevention device and a method thereof.

Technical means of the present invention for achieving the above object, using the commercial AC power as the main power source and the charging battery as a temporary power source, the electronics using the power charged in the rechargeable battery as the operating power when the commercial AC power is cut off An apparatus comprising: an AC / DC conversion unit receiving an external commercial AC power and converting the same into DC power; A DC / DC converter configured to receive a DC power output through the AC / DC converter and boost or step down to a required DC voltage, and then supply the voltage to the main circuit unit including a controller; A charging circuit unit which stabilizes the DC power output through the AC / DC converter and supplies the stabilized DC power to the charging battery to charge the battery; A charging battery that supplies charging power to a main circuit unit of an electronic device through a DC / DC converter when the commercial AC power is cut off; A switching means installed at an output terminal of the rechargeable battery and turned on according to a control signal of a controller to transfer charging power of the rechargeable battery to a main circuit unit; And when the initial operation power is applied through the DC / DC converter, the switching means is turned on, and when the switching means is turned on, the switching means is always turned on regardless of whether power is supplied thereafter. It characterized in that it comprises a control unit.

Another technical means of the present invention for achieving the above object is a built-in short-range wireless communication means in the zone setting device for performing short-range wireless communication with the mobile communication terminal in the service zone via the short-range wireless communication means, the external commercial AC An AC / DC converter which receives power and converts the power into DC power; A DC / DC converter configured to receive a DC power output through the AC / DC converter and boost or step down to a required DC voltage and then supply the voltage to the controller of the zone setter; A charging circuit unit which stabilizes the DC power output through the AC / DC converter and supplies the stabilized DC power to the charging battery to charge the battery; A movement detecting sensor for detecting a movement of the zoning unit so that a subscriber cannot arbitrarily change the registered service zone after registration of the use of the zoning unit; A charging battery for supplying charging power to a control unit and a movement detecting sensor of a zone setter through a DC / DC conversion unit when the commercial AC power is cut off; Switching means installed at an output terminal of the rechargeable battery and turned on according to a control signal of a controller to apply charging power of the rechargeable battery to the controller; And operate by receiving power output from the DC / DC converter and performing a predetermined registration procedure when there is a usage registration request command of a zone setter through short-range wireless communication from an external mobile communication terminal. When the procedure is completed, it is characterized in that it comprises a control unit for setting the registration flag indicating whether or not the registration of the zone setter stored in the memory to the registration state, and the switching means is turned on when the registration flag is registered.

In addition, the technical method of the present invention for achieving the above object is a built-in short-range wireless communication means to perform a short-range wireless communication with a mobile communication terminal through the short-range wireless communication means, the range of the short-range wireless communication possible mobile communication terminal A zone setter for setting a service zone for a first zone, the zone setter comprising: a first step of receiving commercial AC power; A second step of determining, by the control unit of the zone setter, the registered or unregistered state of the zone setter by checking a registration flag stored in a memory according to the input of the commercial AC power; If the registration flag stored in the memory is in the unregistered state, the controller checks whether a usage registration request command of the zone setter is input from the mobile communication terminal; A fourth step of performing a predetermined registration procedure when a use registration request command of the zone setter is input and setting a registration flag indicating whether to register in a memory to a registered state; And when the memory is set to the registered state, the control unit comprises a fifth step of controlling to turn on the switching means installed on the output terminal of the rechargeable battery.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a view showing an example in which the over-discharge prevention device of the rechargeable battery according to the present invention is applied to an electronic device, the electronic device 100 uses a commercial AC power source as a main power source, when the commercial AC power supply is cut off (electrostatic, When the power off or when the plug of the electronic device is unplugged from the outlet) is a variety of electronic devices 100 using the rechargeable battery as a temporary power source.

The electronic device 100 includes an AC / DC converter 110, a DC / DC converter 120, a charging circuit unit 130, a charging battery 140, a switching unit 150, and a main circuit unit 160. It is made, including.

That is, the AC / DC converter 110 is composed of a rectifier circuit including a transformer and a diode for receiving an external commercial AC power source and converting it to DC power.

The DC / DC converter 120 receives the DC power output through the AC / DC converter 110 to step up or step down the DC voltage required by the main circuit unit 160 and then press down the electronic device 100. It is configured to supply to the main circuit unit 160 including the control unit 170.

The charging circuit unit 130 is configured to receive the DC power output through the AC / DC converter 110 to charge the charging battery 140 and to prevent overcharging of the charging battery 140.

Although the detailed circuit of the charging circuit unit 130 is not shown in detail, stabilization means for outputting a predetermined DC power by receiving the DC power output from the AC / DC converter 110, and the charging battery 140 of the Control means for controlling the output power supplied to the charging battery 140 according to the comparison result by comparing the charging voltage and the predetermined full charge voltage with each other, and switched according to the control signal of the control means to the charging battery 140 It may be configured to include a switching means for opening and closing the applied DC power. Of course, the configuration of the charging circuit unit 130 of the present invention is not limited to such a charging circuit, it is natural that a simple application of a known charging circuit or may be applied by adding a variety of protection functions to the known charging circuit as necessary. Do.

The charging battery 140 is charged by receiving the DC power output through the charging circuit unit 130, the control unit 170 of the electronic device 100 through the DC / DC converter 120 when the commercial AC power is cut off It is configured to supply charging power to a specific circuit including).

The switching means 150 is installed between the output terminal of the charging battery 140 and the DC / DC conversion unit 120, the ON (ON) in accordance with the control signal of the control unit 170 to charge the charging battery 140. It is configured to transfer the power to the control unit 170 through the DC / DC converter 120.

In addition, the electronic device 100 has a first forward diode D1 connected in series between an output terminal of the AC / DC converter 110 and an input terminal of the DC / DC converter 120 to prevent current backflow, and A second forward diode D2 is further provided between the one end of the switching means 150 and the input terminal of the DC / DC converter 120 to prevent current backflow.

The control unit 170 detects when the initial operating power is applied through the AC / DC converter 110 and the DC / DC converter 120 to control the switching means 150 to on, and the switching. When the means 150 is set to on, it is configured to control the switching means 150 to be always on regardless of whether power is supplied thereafter.

The electronic device 100 configured as described above is turned off when the switching means 150 installed at the output terminal of the rechargeable battery 140 is shipped from the factory, thereby preventing the rechargeable battery 140 from being discharged during the distribution period. .

However, when the consumer purchases and connects the AC plug 101 of the electronic device 100 to a predetermined AC outlet, the operating power is supplied to the power terminal of the controller 170, and when the power is supplied through the power terminal, the controller 170 ) Detects this and turns on the switching means 150. Accordingly, even when the AC plug 101 is disconnected from the AC outlet, since the switching means 150 is turned on, the charging power of the charging battery 140 can be supplied to the main circuit unit 160.

3 is a view showing an example of applying the over-discharge prevention device of the charge battery according to the present invention to the zone setter, the zone setter 200 has a built-in wireless sensor and a short-range wireless communication means for preventing movement of the short-range wireless It performs a short-range wireless communication with the mobile communication terminal 1 through a communication means, and sets the range of the short-range wireless communication to be a service zone for the mobile communication terminal 1.

The zone setter 200 as described above includes an AC / DC converter 210, a DC / DC converter 220, a charging circuit 230, a charge battery 240, a switching means 250, and a memory 260. It includes a movement detecting sensor 270, a wireless transmission and reception unit 280 and the control unit 290.

That is, the AC / DC converter 210 is composed of a rectifier circuit including a transformer and a diode that receives an external commercial AC power source and converts it into a DC power source.

The DC / DC converter 220 receives a DC power output through the AC / DC converter 210 and then boosts or steps down the DC voltage required by various circuits including the controller 290. It is comprised so that it may supply to various circuits including the control part 290 of 200.

The charging circuit unit 230 receives and stabilizes the DC power output through the AC / DC conversion unit 210, and then supplies the stabilized DC power to the charging battery 240 to charge the charge battery 240. It is configured to prevent overcharge.

The charging battery 240 is charged by receiving the DC power output through the charging circuit unit 230, the movement detection of the zone setter 200 through the DC / DC converter 220 when the commercial AC power is cut off It is configured to supply charging power to the sensor 270 and the control unit 290.

The switching means 250 is installed between the output terminal of the charging battery 240 and the input terminal of the DC / DC converter 220, and turned on according to the control signal of the controller 290 to move the charging power of the charging battery 240. It is configured to deliver to the sensor 270 and the control unit 290.

In addition, the zone setter 200 includes a first forward diode D1 connected in series between an output terminal of the AC / DC converter 210 and an input terminal of the DC / DC converter 220 to prevent current backflow, and A second forward diode D2 is further provided between the one end of the switching means 250 and the input terminal of the DC / DC converter 220 to prevent current backflow.

The memory 260 stores a program for operating the zone setter 200 and data according to the operation, and also stores a registration flag 265 indicating whether to use the zone setter 200. .

The movement detection sensor 270 is for preventing the subscriber from changing the registered service zone arbitrarily after registration of the use of the zone setter 200. It detects the movement degree and converts the movement degree to the movement distance, and if the cumulative total of the converted movement distance exceeds a predetermined threshold value is configured to notify the controller 290 exceeding the movement distance. The movement sensor 270 may be configured using, for example, an acceleration sensor, a GPS receiver, or the like.

The wireless transmitter / receiver 280 is configured for short-range wireless communication with the mobile communication terminal 1, and the wireless transmitter / receiver 280 is Bluetooth, Wireless Local Area Network (WLAN), Zigbee, UWB. (Ultra Wide Band) and Binary CDMA.

The controller 290 is operated by receiving power supplied through the AC / DC converter 210 and the DC / DC converter 220, and zones are established through short-range wireless communication from an external mobile communication terminal 1. It is configured to check the use registration request command of the device 200 to turn on the switching means 250.

That is, the controller 290 performs a predetermined registration procedure when a usage registration request command of the zone setter 200 is input from an external mobile communication terminal 1, and when the registration procedure is completed, the memory 260. The registration flag 265 indicating whether or not to register the zone setter 200 set in the registration state is set to the registered state, and the switching means 250 is set to on when the registration flag 265 is in the registered state.

In addition, the control unit 290 controls the power supply and switching means 250, the memory 260, the movement detection sensor 270 and the wireless transmission and reception unit 280, in particular the control unit 290 is a mobile communication terminal ( Control for transmitting zone setting device identification to the mobile communication terminal 1 according to the use registration procedure of 1) and control for use registration according to a request for use registration of the mobile communication terminal 1. Perform

The zone setter 200 configured as described above turns off and distributes the switching means 250 installed at the output end of the rechargeable battery 240 at the time of shipment of the zone setter and controls the registration of the zone setter 200. By detecting this at 290, the switching means 250 is turned on, thereby preventing over-discharge of the charging battery 240 that may be generated in the distribution process of the zoner, thereby preventing the charging battery from being used. Function can be performed.

FIG. 4 is a flowchart illustrating a method for preventing over discharge of a rechargeable battery in the zone setter shown in FIG. 3. Referring to FIG. 3, FIG.

First, when the AC plug 201 of the zone setter 200 is connected to a predetermined AC outlet, the commercial AC power applied through the AC plug 201 is the AC / DC converter 210 of the zone setter 200. ) And the DC / DC converter 220 is converted into a constant DC power, and the converted DC power is supplied to each circuit including the controller 290 (S1).

Accordingly, the control unit 290 of the zone setter 200 operates by receiving an applied DC power to register or register a registration flag 265 indicating whether to use the zone setter 200 stored in the memory 260. The unregistered state is checked (S2). That is, in the case of the zoning device 200, if the user flag has not been registered for use after being shipped from the factory, the registration flag 265 is recorded in a clear state (for example, the registration flag is '0'). In this case, the control unit 290 checks the registration state of the registration flag 265 (for example, the registration flag is '1') or the unregistered state (for example, the registration flag is '0').

Of course, the zone setter 200 has already been registered for use, the registration flag 265 is already set to the registered state (the registration flag is recorded as '1'), the switching means 250 It is already set to ON (S9).

If the registration flag 265 set in the memory 260 is not registered, the controller 290 controls the switching means 250 installed at the output terminal of the rechargeable battery 240 to be OFF (S3 and S4). Of course, the switching means 250 is already set to OFF in order to prevent the charge battery 240 from being over-discharged in the distribution process when the zone setter 200 is shipped from the factory.

Subsequently, the controller 290 of the zone setter 200 checks whether the usage registration request command of the zone setter 200 is transmitted from the mobile communication terminal 1 through short-range wireless communication (S5). When the registration request command is transmitted from the communication terminal 1, the zone setter 200 and the mobile communication terminal 1 perform a predetermined registration procedure through short-range wireless communication (S6). Since the detailed procedure for the registration is not the gist of the present invention, a detailed description thereof will be omitted.

As such, when the use registration procedure of the zoning device 200 is completed, the control unit 290 sets the registration flag 265 stored in the memory 260 to the registered state (the registration flag is changed from '0' to '1'). (S7).

Subsequently, when the registration flag 265 stored in the memory 260 is set to the registered state, the control unit 290 turns on the switching means 250 installed at the output terminal of the rechargeable battery 240 (S8). .

Accordingly, the rechargeable battery 240 supplies the operating power to the movement detecting sensor 270 when the external AC power is cut off (for example, the AC power is cut off due to a power failure or a deliberate movement of the zone setter by a subscriber). Accordingly, even if the subscriber intentionally cuts off the power of the zone setter 200 and moves it, the movement detection sensor 270 can calculate the movement distance of the zone setter 200 accurately, and the controller 290 Determines whether to stop the zone service based on the accumulated movement distance detected by the movement detection sensor 270.

As described above, in the present invention, a switching device is provided at an output terminal of the rechargeable battery in an electronic device including a zonator using commercial AC power as a main power source and using the rechargeable battery as a temporary power source when the commercial AC power is interrupted. When the electronic device is shipped, the switching means are set to off, but the switching means are automatically turned on when the electronic device is used or registered, thereby preventing overcharging of the rechargeable battery during the distribution period of the electronic device. In addition, there is no fear of over-discharge of the rechargeable battery even during distribution, thereby reducing the charging capacity of the rechargeable battery and having no consideration of the distribution period.

In addition, the present invention by installing a switching means at the output terminal of the rechargeable battery and by using a software method to turn on the switching means when using the electronic device to prevent over-discharge of the rechargeable battery, by checking the charge voltage of the existing rechargeable battery Compared with the hardware over-discharge cut-off circuit that blocks over-discharge of the rechargeable battery, the circuit design is much simpler, resulting in improved productivity and economically significant benefits.

Claims (7)

In an electronic device that uses commercial AC power as a main power source and a rechargeable battery as a temporary power source, but uses the power charged in the rechargeable battery as an operating power source when the commercial AC power is interrupted. An AC / DC conversion unit receiving external commercial AC power and converting the power into DC power; A DC / DC converter configured to receive a DC power output through the AC / DC converter and boost or step down to a required DC voltage, and then supply the voltage to the main circuit unit including a controller; A charging circuit unit which stabilizes the DC power output through the AC / DC converter and supplies the stabilized DC power to the charging battery to charge the battery; A charging battery that supplies charging power to a main circuit unit of an electronic device through a DC / DC converter when the commercial AC power is cut off; A switching means installed at an output terminal of the rechargeable battery and turned on according to a control signal of a controller to transfer charging power of the rechargeable battery to a main circuit unit; And A control unit which detects when the initial operating power is applied through the DC / DC converter and turns on the switching means, and controls the switching means to always be on regardless of whether or not power is supplied thereafter when the switching means is turned on. Over-discharge prevention device of a rechargeable battery comprising a. The method of claim 1, The switching means is installed between the charging battery and the input terminal of the DC / DC converter, the charging battery, characterized in that the switch is set to the off state before the electronic device is supplied with commercial AC power for the first time to prevent over-discharge of the rechargeable battery Overdischarge prevention device. The method according to claim 1 or 2, The electronic device has a built-in short-range wireless communication means to perform short-range wireless communication with a mobile communication terminal through the short-range wireless communication means, and is a zone setting device for setting a range of short-range wireless communication as a service zone for a mobile communication terminal. An over-discharge prevention device for a rechargeable battery, characterized in that. In the zone setting device having a built-in short-range wireless communication means for performing short-range wireless communication with the mobile communication terminal in the service zone through the short-range wireless communication means, An AC / DC conversion unit receiving external commercial AC power and converting the power into DC power; A DC / DC converter configured to receive a DC power output through the AC / DC converter and boost or step down to a required DC voltage and then supply the voltage to the controller of the zone setter; A charging circuit unit which stabilizes the DC power output through the AC / DC converter and supplies the stabilized DC power to the charging battery to charge the battery; A movement detecting sensor for detecting a movement of the zoning unit so that a subscriber cannot arbitrarily change the registered service zone after registration of the use of the zoning unit; A charging battery for supplying charging power to a control unit and a movement detecting sensor of a zone setter through a DC / DC conversion unit when the commercial AC power is cut off; Switching means installed at an output terminal of the rechargeable battery and turned on according to a control signal of a controller to apply charging power of the rechargeable battery to the controller; And It operates by receiving power output through the DC / DC converter, and performs a predetermined registration procedure when there is a usage registration request command of a zone setter through short-range wireless communication from an external mobile communication terminal. When the registration is completed, the registration flag indicating whether or not the registration of the zone setter stored in the memory is set to the registration state, and if the registration flag is a registration state, the over-discharge prevention of the rechargeable battery, characterized in that it comprises a control unit for turning on the switching means. Device. The method of claim 4, wherein The zone setter may include: a first forward diode connected in series between an output terminal of the AC / DC converter and an input terminal of the DC / DC converter; And a second forward diode connected in series between the output terminal of the rechargeable battery and the input terminal of the DC / DC converter to prevent current backflow. In the zone setter for embedding a short-range wireless communication means to perform a short-range wireless communication with the mobile communication terminal through the short-range wireless communication means, and to set the possible range of the short-range wireless communication as a service zone for the mobile communication terminal, The zoner is a first step of receiving a commercial AC power supply; A second step of determining, by the control unit of the zone setter, the registered or unregistered state of the zone setter by checking a registration flag stored in a memory according to the input of the commercial AC power; If the registration flag stored in the memory is in the unregistered state, the controller checks whether a usage registration request command of the zone setter is input from the mobile communication terminal; A fourth step of performing a predetermined registration procedure when a use registration request command of the zone setter is input and setting a registration flag indicating whether to register in a memory to a registered state; And And if the memory is set to the registered state, the control unit includes a fifth step of controlling ON the switching means installed at the output terminal of the rechargeable battery. The method of claim 6, And if the registration flag stored in the memory is in an unregistered state, maintaining the off state of the switching means installed at the output terminal of the rechargeable battery.

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