KR100956119B1 - Cell charger and its control method for standby power isolation - Google Patents

Abstract

PURPOSE: A battery charging device and a control method thereof are provided to minimize standby power consumption by completely blocking input power when a portable device or battery pack is not connected to the battery charging device. CONSTITUTION: A power blocking unit(10) supplies or blocks an AC voltage. A power factor improving unit(20) controls reactive power for minimizing power consumption. A power converter(30) converts AC power into DC power. A battery charging unit(40) constantly supplies a charging current to a battery. An overpower blocking unit(50) blocks the overvoltage and overcurrent inputted to the battery. A potential detector(60) detects the potential of the battery. A battery state detector(70) determines the state of the battery based on the potential of the battery.

Description

Battery charging device for standby power cutoff and control method thereof {CELL CHARGER AND ITS CONTROL METHOD FOR STANDBY POWER ISOLATION}

The present invention relates to a battery charging device for standby power cutoff and a control method thereof, and particularly for standby power blocking to minimize standby power consumption by completely shutting off the power when the battery and the battery pack are not connected to the charging device. The present invention relates to a battery charger and a control method thereof.

In other words, even when the charging device (charging device) is plugged into an outlet, if the device that uses a battery including a mobile phone (digital camera, laptop, etc.) and the battery pack are not connected to the charging device, the power is completely shut off. The present invention relates to a battery charging device for shutting off standby power and a method of controlling the same, even when connected to a charger, to zero energy (0 [W]) due to standby power even when the charging is completed.

With the development of IT and telecommunications, the number of mobile devices will increase rapidly, and the demand for charging systems and the resulting power consumption will increase exponentially. These IT and telecommunication devices will be a big part of future power consumption. It is expected to occupy.

Among these devices, which are widely used nowadays, their penetration rate is expanding, and charging devices of mobile phone charging devices and various portable electronic devices (for example, mobile phones, laptops, digital cameras, PMPs, etc.).

In general, users have a separate charging device for charging when using a portable device, and this charging device is not always connected to an outlet only when charging, but is always connected to an outlet, causing unnecessary waste of standby power. have.

Generally, mobile phone chargers and mobile device chargers are kept below 0.5 [W] through the regulation of standby power, but they cannot completely block standby power. Mobile phones, mobile devices, and battery packs are connected. If not, there is no regulation of power consumption, which consumes significantly higher power than general standby power, causing unnecessary waste power.

In the case of using the charging device in the home or office, even if the charging is completed, the power can not be cut off and continuously operating in the state of charge, more unnecessary power consumption is always generated than in the standby state. In other words, in the case of a mobile phone charging device and a charging device for a mobile device, the reality is that most households are always connected to an outlet, and it is not well recognized that general users are consuming electricity even when they are just plugged into the outlet. . In addition, even when the charging is completed, the user is always immediately connected without disconnecting from the outlet, and there is a problem in that unnecessary power is consumed even in the use habit.

The present invention has been made to solve the above-mentioned problems, the object of the present invention is to connect the device to be charged in the battery charging device, including the charging device for mobile phones and mobile devices is not connected The present invention provides a battery charging device for shutting off standby power that does not waste unnecessary standby power by completely blocking input power.

Another object of the present invention is to provide a control method of a battery charging device for standby power cutoff which implements a method of automatically shutting off input power by detecting whether a battery is charged and determining that the charging is completed.

Another object of the present invention, when the battery pack of the mobile phone and other mobile devices are not connected to the power control to completely cut off the input voltage (AC voltage) to cut off unnecessary standby power completely to save energy, The present invention provides a battery charging device for blocking standby power and a method of controlling the same, which can prevent an electric shock, an electric leakage or the like caused by the continuous supply of power.

In addition, another object of the present invention is a built-in control microcontroller inside the charging device to detect whether the battery pack and the portable device is connected to configure the input power on and off (on / off), when charging is complete The present invention provides a battery charging device for shutting off standby power and a method of controlling the same, which completely cut off standby power by immediately shutting off input power.

In addition, another object of the present invention is to change the structure of the general connector of the 2-pin type used in conventional notebooks, digital cameras, mobile phones and mobile devices to more than 4 pins, such as USB connector and S-VIDEO internal battery voltage The present invention provides a battery charging device for standby power cutoff configured to output and transfer the same to a charging device.

In addition, by expanding the connector pins by about two pins to output the internal battery voltage to the charging device, the scalability and effectiveness of the present technology will be further increased.

The battery charging device for standby power cut-off for solving the problems of the present invention, the AC input terminal for inputting AC power, the display unit which is a display device for displaying the state of charge and the connection state and power supply of the battery and the charged A battery charging device including an output terminal for outputting a voltage and receiving and supplying a battery voltage transmitted from a mobile device to be used by a control unit. The battery charging device includes an AC power supply through an input terminal and a control signal from a control unit. It supplies or cuts the input AC voltage (ON / OFF) and detects zero voltage (ON / OFF) and minimizes peak current to extend the life of power control device and minimize noise. A power cut off unit; A power factor improving unit that improves the power factor to minimize unnecessary power waste by suppressing reactive power generated by the use of connection devices connected to the output terminal in the AC power input through the power cutoff unit; A power conversion unit which receives AC power through the power factor improving unit, converts the DC power into DC power, and generates and supplies a required voltage to the battery charger connected to the rear stage; The battery charging unit protects the device connected to the battery and output terminal by supplying a constant charging current by stabilizing the current and voltage when charging the battery connected to the outside, and the output DC (DC) supply voltage is cut off when the over current and over voltage are supplied. Wow; A conversion power cut-off unit connected to the battery charger and blocking power supplied to the battery charger under control of the controller to secondarily block overvoltage and overcurrent flowing into the battery and the connected device connected to the rear end; A potential detector for detecting a potential output from the battery charger and a potential of a battery connected through an output terminal and providing the potential to the battery state detector; A battery state sensing unit which senses a potential of a battery and determines whether it is impossible to charge and a state of an unusable battery and transmits the same to a controller; A battery connection detector for detecting a state of a connected device and a battery pack connected to an output terminal and transmitting the detected state to the controller; A battery capacity sensing unit which senses the capacity of the battery connected to the outside and converts the voltage into a voltage so as to set a charging current amount and transmits the voltage to the controller; And a control unit that monitors the state of charge and performs program control by using a microcontroller to control the entire system.

In addition, the control method of the battery charging device for blocking standby power according to the present invention, S10: checking whether the battery is connected; S12: If it is determined in step S10 that the battery is not connected (No), the connection state of the outlet is inspected, and if it is not connected (No), it is determined that power is not provided and then the control unit is down (down). Steps; S20: If it is determined that the battery is connected (Yes) as a result of the test in step S10, performing a potential test of whether the battery voltage BAT V is less than the problem voltage Error V; S22: if it is determined that the problem voltage is large (Yes) as a result of the potential test in step S20, generating an ERROR signal and stopping the system; S30: when it is determined that the battery voltage is large (No) as a result of the potential test in step S20, checking the connection state of the outlet connected to the output terminal; S32: If it is determined that the outlet in step S30 is not connected (No), the process proceeds to step S90 of the sleep mode described later, and checking the connection state of the battery; S40: If it is determined that the outlet in step S30 is connected (Yes), operating the power of the over-power cut-off unit 50 in an on state; S50: checking the ID (capacity) of the battery after operating the power in an on state in step S40; S60: checking the ID (capacity) of the battery in step S50, and starting charging of the battery; S70: after starting charging of the battery in step S60, checking the state of charge of the battery, and if the charging is not completed, continuously charging; S80: when the power cutoff unit 10 is turned off by performing step S72, checking an outlet connection state; S82: If it is determined in step S80 that the outlet is not connected (No), continuing the operation in the sleep mode; S90: If it is determined in step S80 that the outlet is connected (Yes), checking the connection state of the connected battery; S92: If it is determined in step S90 that the battery is not connected (No), the controller 90 stops (down) without further charging; S100: If it is determined in step S90 that the outlet is connected (Yes), determining whether the voltage of the battery is within a predetermined voltage (4V); S102: If it is determined by the step S100 that the voltage of the battery is within a predetermined voltage (4 V) (Yes), returning to the step S40 for turning ON the power cutoff unit 10 and proceeding with charging again; And S104: if it is determined in step S100 that the voltage of the battery is higher than or equal to the predetermined voltage (4V) (No), returning to step S80 to check the outlet connection state; It can be achieved by providing.

According to an embodiment of the present invention, it is possible to provide a standby power blocking battery charger and a method of controlling the same, which can completely block standby power unnecessarily wasted in a mobile phone charging device, a charging device for a mobile device, and a battery charging pack. have.

In addition, according to an embodiment of the present invention, by checking the state of charge of the mobile phone charging device, the charging device for the mobile device and the battery charging pack, the input power is cut off when the charging is completed, the charging device and the battery pack is not connected In the non-state, even if the charging device is connected to the outlet, it is possible to provide a standby charging device for charging the battery that does not waste power consumption and a control method thereof.

In addition, according to an embodiment of the present invention, by cutting off the power input to the charging device once the charge is completed, it is possible to prevent accidents such as electric shock, short circuit, etc., as well as to prevent fire and safety accidents accordingly It is possible to provide a power charging battery charging device and a control method thereof.

In addition, according to the standby power cut-off battery charging device according to the present invention, it is possible to provide a standby power cut-off battery charging device that can charge the power without purchasing an individual charging device.

Hereinafter, the configuration and operation of the preferred embodiment of the present invention with reference to the accompanying drawings will be described in more detail.

(Example)

1 is a block diagram illustrating a configuration of a battery charging device for blocking standby power according to an embodiment of the present invention.

The configuration of the battery charging device 100 for standby power cut-off according to the configuration of the present invention is an AC input terminal for inputting AC power, and a display device for displaying the state of charge of the battery and the state of connection and power supply of the battery, etc. A battery charging device including a display unit and an output terminal for outputting a charged voltage and receiving and supplying a battery voltage transmitted from a mobile device so as to be utilized by a controller, wherein the battery charging device is provided with AC power through an input terminal, Supply or cut off (ON / OFF) input AC voltage by receiving control signal, and check zero voltage at ON / OFF to minimize peak current to extend the life of power control device and reduce noise A power cut-off portion which performs a function of minimizing; A power factor improving unit for minimizing unnecessary power waste by suppressing reactive power generated due to power usage of the power input through the power cut-off unit and the connection devices connected to the output terminal; A power conversion unit which receives AC power through the power factor improving unit, converts power in an SMPS method, and generates and supplies a required voltage to a battery charger connected to a rear end; The battery charging unit protects the device connected to the battery and output terminal by supplying a constant charging current by stabilizing the current and voltage when charging the battery connected to the outside, and the output DC (DC) supply voltage is cut off when the over current and over voltage are supplied. Wow; An over-power cut-off unit which is connected to the battery charger and cuts off power supplied to the battery charger under control of a controller, and cuts off overvoltage and over-current flowing into a battery and a connected device connected to a rear end; A potential detector for detecting a potential output from the battery charger and a potential of a battery connected through an output terminal and providing the potential to the battery state detector; A battery state sensing unit which senses a potential of a battery and determines whether it is impossible to charge and a state of an unusable battery and transmits the same to a controller; A battery connection detector for detecting a state of a connected device and a battery pack connected to an output terminal and transmitting the detected state to the controller; A battery capacity sensing unit which senses the capacity of the battery connected to the outside and converts the voltage into a voltage so as to set a charging current amount and transmits the voltage to the controller; And a controller which monitors the state of charge and performs program control using a microcontroller to control the entire system.

In FIG. 1, reference numeral 2 denotes an AC input terminal for inputting AC power, and reference numeral 4 denotes a display unit which is a display device that displays a charging state of a battery, a connection state of a battery, a power supply state, and the like.

Reference numeral 10 denotes a power cut-off unit, which receives or receives a control signal from the control unit 90 to supply or cut off the AC voltage, and checks zero voltage during ON / OFF to minimize peak current. Thereby extending the life of the power control element and minimizing noise.

Reference numeral 20 is a power factor improving unit, which suppresses unnecessary power generated when using the connected devices connected to the output terminal to a certain level or more to minimize unnecessary power waste.

Reference numeral 30 denotes a power conversion unit which converts power by a switched-mode power supply (SMPS) method by receiving AC power, and generates a voltage required for a battery charger connected to a rear end.

Reference numeral 40 is a battery charging unit, which is configured to supply a constant charging current by stabilizing current and voltage when charging the battery, and connecting to the battery and output terminals by cutting off the DC supply voltage output when overcurrent and overvoltage are supplied. It protects mobile phone devices.

In addition, the reference numeral 50 is an over-power cut-off unit, and cuts off the power supplied from the control unit 90 to the battery charger 40, and has a function of secondary blocking the over-voltage and over-current flowing into the connected battery and mobile phone device, etc. To perform.

Reference numeral 60 denotes a potential detector, which detects a potential output from the battery charger 40 and provides it to the battery state detector.

Reference numeral 70 denotes a battery state detection unit, and detects the potential of the battery to determine whether it is impossible to charge and the state of the battery that is not usable, and transmits the same to the controller 90.

Reference numeral 80 denotes a battery connection detector, which detects a connection state of a mobile phone and a battery pack connected to an output terminal and transmits the detected state to the controller.

Reference numeral 90 is a device that monitors the state of charge and controls the entire system, and performs program control using a microcontroller. Here, the control unit 90 firstly controls to set the charging range according to the remaining capacity of the battery, and secondly, whether to continue charging by detecting the outlet insertion state and the battery connection state or the sleep mode (Sleep mode) Determine the operation mode to determine whether to switch to), and, third, determine the charging completion signal transmitted from the control unit to stop the charging and switch to the mode to cut off the power, and the error transmitted from the control unit. By using the (ERROR) information to control the over-power cut-off unit 50 performs a function to prevent secondary damage caused by damage to the charging device and the connected device caused by the occurrence of overvoltage or overcurrent.

In addition, reference numeral 92 is a battery capacity detection unit, and detects the capacity of the battery connected to the outside to convert the voltage to set the charging current amount to be transferred to the control unit, the reference numeral 96 outputs the charged voltage and the battery voltage delivered from the mobile device Receiving the output terminal for supplying and outputting power to be utilized in the control unit, the reference numeral 100 shows a battery charging device for standby power cut according to the present invention having such a configuration.

In FIG. 1, a supply line of power supplied through a battery is illustrated as a red line, and a supply line of battery charging power converted from an AC input is illustrated by a black line.

Operation of the standby power cut-off battery charging device according to the present invention configured as described above will be described in order below.

First, when the input power AC is introduced through the input terminal 2, the power factor improving unit 20 minimizes the phase difference between the voltage and the current to increase the power factor, and suppresses the reactive power to convert the power supply unit 30. Power on

Next, the power conversion unit 30 is changed to a DC power that can be supplied to the battery using the AC power supplied from the power factor improving unit 20 is connected to the battery charger 40.

In addition, the battery charger 40, when charging the battery installed in the mobile phone and the battery pack connected to the output terminal 96 side, controls a constant current and charging voltage, abnormal operation by detecting the overcurrent and the battery state (overcurrent) Can protect the battery and mobile phone from overvoltage.

In addition, the battery connection detecting unit 80 checks whether the mobile phone and the battery pack are connected to the charging connector of the output terminal 96 and provides the information to the control unit 90.

In addition, when the potential detection unit 60 cuts off the power by the command of the control unit 90 in the over-power cut-off unit 50 that receives and converts the power of the battery charging unit 40, the battery voltage state in the connected mobile device Check and transfer the corresponding information to the controller 90.

In this case, the battery capacity detecting unit 92 determines the capacity of the battery built in the connected battery pack or the mobile device, converts it to voltage, and charges the battery capacity through the charge control unit (not shown) in the controller 90. Provides information to supply current.

In addition, the controller 90 operates by receiving power from the output terminal of the battery charger 40, and when the battery is not connected, the controller 90 turns off the power cutoff unit 10 to completely block the input power. Zero power consumption (0W).

At this time, the battery and the battery pack in the portable device is connected, the controller is activated by using a DC power supplied from the battery to turn on the power cutoff unit 10 (ON) to perform a control so that charging can be performed again.

In addition, even when charging is completed in the battery charger 40, the received charging completion information is received to cut off the power cutoff unit 10 to zero standby power consumption (0W).

In this case, when there is no change over a predetermined time by using the battery of the mobile device and the battery pack, the controller 90 switches to the sleep mode to minimize the power consumption and minimizes the power consumption. DC power is controlled to supply only minimum power to each sensor connected to each sensing unit.

Next, the over-power cutoff unit 50 receives a signal from the control unit 90 to control the AC input power on / off to cut off the power supplied to the control unit 90 and the respective devices. Do this.

In addition, the display unit 4 displays the power supply state, the completion of charging of the battery and the state of charge to the user so as to be transmitted to the user.

In addition, the battery state detecting unit 70 monitors the potential of the connected battery and signals a signal so that the controller 90 cannot charge when the voltage is lower than a dangerous voltage (battery occurrence voltage of the battery: difference by voltage). Supply.

For example, in the case of lithium battery (Li Bat.), If the power supply drops below 3.2V (or 4V), problems with moisture and long-term unused battery may cause problems during use.

In addition, by changing the structure of the charging connector of the mobile device to receive the internal battery voltage to supply power to the control unit, when the mobile device is connected to the charging can be started and terminated automatically to zero the standby power.

Next, the structure of the DC power jack generally used and the structure of the DC power jack to which the principle according to the embodiment of the present invention is applied will be described in more detail with reference to FIGS. 2 to 3.

First, Figure 2 (a) shows the structure of a DC power jack used in a general notebook, (b) is a block diagram showing the structure of a DC power jack applying the principle according to an embodiment of the present invention.

As shown in (a) of FIG. 2, a DC power jack generally applied to a notebook has a structure in which a positive power supply terminal is installed inside, and a negative power supply terminal is installed outside. have. That is, in the structure of the DC power jack used in the battery charging device for standby power cutoff, the positive power supply (+) supply terminal is provided inside the jack for supplying a positive voltage; A first negative power supply terminal (-) which is installed inside the jack to supply negative voltage and a second negative power supply terminal which is connected to the negative power supply terminal (-) in parallel and installed outside of the jack Wow; It is installed inside the jack, and outputs the battery voltage output from the connected device to detect the voltage from the charging device to check the battery power supply terminal (BAT); is configured by additionally installed.

However, as described above, the structure of the DC power jack for applying to the standby power cut-off battery charging device according to the present invention can be applied by modifying the existing two-pin shape to have four pins. That is, as shown in (b) of FIG. 2, a positive power supply terminal is installed inside, a negative power supply terminal connecting two holes formed outside is installed, and a notebook is added thereto. This can be done by installing a battery power supply terminal (BAT) that outputs the battery voltage and detects and checks the voltage in the charging device.

Thus, the structure of the connector of the device connected to the output terminal according to the present invention has a structure capable of outputting the internal battery voltage of the connecting device to supply to the controller by configuring an additional connection pin in the conventional 2-pin type connector method It is characterized by.

In addition, Figure 3 (a) shows the external structure of the power jack applied to the power jacks for 5pin, 18pin, 20pin, USB, round DC, which is generally used in digital cameras and mobile phones, and (b) Is a configuration diagram showing a structure of a DC power jack formed with 5 pins configured by applying the principle according to an embodiment of the present invention.

 As shown in (a) of FIG. 3, a DC power jack applied to a 5pin, 18pin, 20pin, USB, round DC jack, and the like, which are generally used in digital cameras and mobile phones, has a large number of pins. Since the numbers are different, DC power jacks of different structures are purchased (or installed) separately. Accordingly, not only the cost of purchasing the individual charging device was greatly increased, but also the use of the individual device was lost because it could not be used in common.

Accordingly, by applying the principle according to the embodiment of the present invention, as shown in (b) of Figure 3, it is possible to implement a structure of a DC power jack having a structure of a standardized pin consisting of 5 pins (pin). .

In other words, the structure of the 5-pin DC power jack having such a configuration will be described in detail. A positive power supply terminal and a negative power supply terminal are installed at both ends of both ends, respectively, This can be achieved by installing two signal supply terminals on the battery and a battery power supply terminal (BAT) for measuring the battery voltage of the connected equipment.

By such a configuration, the standby power cut-off battery charging device according to an embodiment of the present invention can implement a standardized DC power jack that can be commonly applied to the connection device having a different structure. Thus, the power supply for operation can be supplied using two pins out of five pins, the other two pins can be used for information confirmation (for data communication), and the battery power supply terminal using the remaining one pin. Use BAT to get battery power. Therefore, this voltage is checked to implement a configuration that can process standby power and power consumed when charging is completed without waste.

Next, a control method of the standby power blocking battery charging apparatus according to the present invention configured as described above will be described with reference to FIGS. 4 to 5.

4 to 5 are flowcharts for explaining a method of controlling a standby power blocking battery charging apparatus according to an exemplary embodiment of the present invention. Hereinafter, the control algorithm will be described with reference to the accompanying drawings.

<Algorithm explanation>

S10: Check whether the battery is connected.

S12: If it is determined in step S10 that the battery is not connected (No), the connection state of the outlet is inspected, and if it is not connected (No), it is determined that power is not provided and the controller is down. .

When the battery charger is disconnected from the outlet, there is no power, so it does not operate in the power down state. If the battery is not connected, the standby power consumption is 0 W. It is a step to keep the state.

S20: If it is determined in step S10 that the battery is connected (Yes), a potential test is performed to see if the battery voltage BAT V is smaller than the problem voltage Error V.

S22: If it is determined that the problem voltage is large (Yes) as a result of the potential test in step S20, an ERROR signal is generated and the system is stopped.

S30: As a result of the potential test in step S20, when it is determined that the battery voltage is large (No), the connection state of the outlet connected to the output terminal is checked.

S32: If it is determined that the outlet in step S30 is not connected (No), the flow advances to step S90 in the sleep mode described later to check the connection state of the battery.

S40: If it is determined in step S30 that the outlet is connected (Yes), the power supply of the over-power cut-off unit 50 is turned on (On).

S50: In step S40, the power is turned on, and the ID (capacity) of the battery is checked.

S60: After checking the ID (capacity) of the battery in step S50, charging of the battery is started.

S70: After starting charging of the battery in step S60, the state of charge of the battery is checked, and charging is continuously performed if charging is not completed.

This is to activate only the control unit by using the voltage remaining in the battery, and the control unit determines the operation mode by checking the battery ID (capacity) and the charging voltage state of the battery.

In addition, in order to check whether the battery is connected to the outlet using the remaining voltage of the battery, the power cut-off unit 10 and the power converting unit 30 are activated for a predetermined time (1 second is applied in the present invention). Check the voltage level to determine if it is connected.

Therefore, as described above, after the battery is connected and it is determined whether the battery needs to be charged, if it is connected to the outlet, the power cutoff unit 10 is activated again to continue charging.

S72: When the charging unit receives the charge completion signal indicating that the charging is completed by continuously checking the voltage of the battery during charging by the step S70, the controller 90 controls to disable the power cutoff unit 10 (Sleep Status). In order to minimize the power consumption of the connected battery, the power of the control unit and the peripheral devices is controlled to switch to the sleep mode, and the power cutoff unit 10 is turned off. The above process is shown in FIG.

S80: When the power cutoff unit 10 is turned off by performing step S72, the outlet connection state is checked.

S82: If it is determined in step S80 that the outlet is not connected (No), the operation in the sleep mode is continued.

S90: If it is determined in step S80 that the outlet is connected (Yes), the connected state of the connected battery is checked.

S92: If it is determined in step S90 that the battery is not connected (No), the controller 90 is shut down without further charging.

S100: If it is determined in step S90 that the outlet is connected (Yes), it is determined whether the voltage of the battery is within a predetermined voltage (4V).

S102: If it is determined in step S100 that the voltage of the battery is within a predetermined voltage (4V) (Yes), the process returns to step S40 for turning on the power cutoff unit 10 (ON) and resumes charging.

S104: If it is determined in step S100 that the voltage of the battery is higher than or equal to a predetermined voltage (for example, 4V) (No), the flow returns to step S80 to check the outlet connection state.

Here, the operation period according to steps S80 to S104 is called a sleep mode, and in this sleep board, only the battery voltage and the battery connection state can be checked purely. The power is turned off to enter the power down mode, where the power is completely turned off.

As a result, when the battery is not connected or when the battery is fully charged, the standby power can be kept at 0W by completely shutting off the input power.

In addition, the battery state detecting unit 70 checks the electric power at the time when the battery is connected with the potential detecting unit 60 and transmits a signal to the control unit 90 to prevent charging when the battery is below a predetermined voltage (for example, 3.1 V). do.

Battery charging device for standby power cut off according to the present invention by repeatedly performing the function according to the control method, it is automatically activated by only connecting the battery is made normal charging.

In addition, as described above, according to the battery charging device for standby power cutoff according to the present invention, when the mobile phone charging device is spread, energy saving by completely blocking the standby power generated from about 60 million domestically and about 2 billion internationally It is effective and can be applied to all mobile phones and mobile devices, so it is excellent effect to prevent the economic loss caused by the purchase of additional charging device.

1 is a block diagram showing the configuration of a battery charging device for blocking standby power according to an embodiment of the present invention,

Figure 2 (a) shows the structure of a DC power jack used in a general notebook, (b) is a block diagram showing the structure of a DC power jack applying the principle according to an embodiment of the present invention.

Figure 3 (a) shows the external structure of a power jack applied to 5pin, 18pin, 20pin, USB, round DC jacks, which are generally used in digital cameras and mobile phones, and (b) is Configuration diagram showing the structure of a DC power jack formed with five pins configured by applying the principle according to the embodiment.

4 to 5 are flowcharts illustrating a control method of a battery charging device for shutting off standby power according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

2: AC input terminal 4: display

10: power cutoff part 20: power factor improvement part

30: power conversion unit 40: battery charging unit

50: over-power cut-off unit 60: potential detection unit

70: battery state detection unit 80: battery connection detection unit

90: control unit 92: battery capacity detection unit

96: output terminal 100: battery charging device for blocking standby power

Claims (4)

delete AC power is supplied through the input terminal, control signal is supplied from the control unit to supply or cut off the input AC voltage (ON / OFF), and minimize the peak current by detecting the zero voltage when ON / OFF. Thereby extending the life of the power control element and minimizing noise; A power factor improving unit that improves the power factor to minimize unnecessary power waste by suppressing reactive power generated by the use of connection devices connected to the output terminal in the AC power input through the power cutoff unit; A power converter converting an AC power applied through the power factor improving unit into a DC power source and generating and supplying a required voltage to a battery charger connected to a rear end; The battery charging unit protects the device connected to the battery and output terminal by supplying a constant charging current by stabilizing the current and voltage when charging the battery connected to the outside, and the output DC (DC) supply voltage is cut off when the over current and over voltage are supplied. Wow; An over-power cut-off unit which is connected to the battery charger and cuts off power supplied to the battery charger under control of a controller, and cuts off overvoltage and over-current flowing into a battery and a connected device connected to a rear end; A potential detector for detecting a potential output from the battery charger and a potential of a battery connected through an output terminal and providing the potential to the battery state detector; A battery state sensing unit which senses a potential of the battery and determines whether it is impossible to charge and a state of an unusable battery and transmits it to the controller; A battery connection detector for detecting a state of a connected device and a battery pack connected to an output terminal and transmitting the detected state to the controller; A battery capacity sensing unit which senses the capacity of the battery connected to the outside and converts the voltage into a voltage so as to set a charging current amount and transmits the voltage to the controller; And a controller configured to monitor a charging state and perform program control by using a microcontroller to control the entire system. DC power jack used in the battery charger, A positive power supply (+) supply terminal installed therein for supplying a positive voltage; A first negative power supply (-) supply terminal installed inside the jack to supply a negative voltage; A second negative power supply terminal connected to the negative power supply terminal in parallel and installed outside the jack; And A battery power supply terminal (BAT) installed inside the jack and outputting a battery voltage output from a connected device to detect and check a voltage in a charging device; Charging device. delete In the method for controlling the battery charging device for blocking standby power, S10: checking whether the battery is connected; S12: If it is determined in step S10 that the battery is not connected (No), the connection state of the outlet is inspected, and if it is not connected (No), it is determined that power is not provided and then the control unit is down (down). Steps; S20: If it is determined that the battery is connected (Yes) as a result of the test in step S10, performing a potential test of whether the battery voltage BAT V is less than the problem voltage Error V; S22: if it is determined that the problem voltage is large (Yes) as a result of the potential test in step S20, generating an ERROR signal and stopping the system; S30: when it is determined that the battery voltage is large (No) as a result of the potential test in step S20, checking the connection state of the outlet connected to the output terminal; S32: If it is determined that the outlet in step S30 is not connected (No), the process proceeds to step S90 of the sleep mode described later, and checking the connection state of the battery; S40: If it is determined that the outlet in step S30 is connected (Yes), operating the power of the over-power cut-off unit 50 in an on state; S50: checking the ID (capacity) of the battery after operating the power in an on state in step S40; S60: checking the ID (capacity) of the battery in step S50, and starting charging of the battery; S70: after starting charging of the battery in step S60, checking the state of charge of the battery, and if the charging is not completed, continuously charging; S80: when the power cutoff unit 10 is turned off by performing step S72, checking an outlet connection state; S82: If it is determined in step S80 that the outlet is not connected (No), continuing the operation in the sleep mode; S90: If it is determined in step S80 that the outlet is connected (Yes), checking the connection state of the connected battery; S92: If it is determined in step S90 that the battery is not connected (No), the controller 90 stops (down) without further charging; S100: If it is determined in step S90 that the outlet is connected (Yes), determining whether the voltage of the battery is within a predetermined voltage (4V); S102: If it is determined in step S100 that the voltage of the battery is within a predetermined voltage (4 V) (Yes), the process returns to step S40 for turning on the power cutoff unit 10 and resumes charging. And S104: If it is determined in step S100 that the voltage of the battery is higher than or equal to the predetermined voltage (4V) (No), returning to step S80 to check the outlet connection state; Control method of a battery charging device for standby power cutoff characterized in that it comprises a.

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