KR20020038461A - Battery charging device - Google Patents

Abstract

PURPOSE: A battery charging apparatus is provided to supply a power to a portable electronic device for a long time. CONSTITUTION: A charger(100) is connected to an AC power supply. The charger(100) rectifies and converts an AC power from the AC power supply into a DC power. The charger(100) adjusts and outputs the converted DC power by a charge power of a battery. A power supply device(200) includes a plurality of unit batteries. The power supply device(200) charges the plurality of unit batteries according to the charge power from the charger(100). The power supply device(200) supplies a large scale battery power. The power supply device(200) suitably voltage-divides the battery power. A battery mounting device(300) is connected to the power supply device(200).

Description

Battery charger {BATTERY CHARGING DEVICE}

The present invention relates to a battery and a charging device of the battery, and more particularly to a portable battery and a battery charging device.

Today, with the development of the electronic communication industry, portable electronic devices are increasing, and these portable electronic devices are becoming smaller and smaller. Such portable electronic devices may be mobile phones, audio devices (cassette player, mp3 phone, cd player, etc.), cameras, razors, notebook computers, etc., and the use of such devices has become common.

Such portable electronic devices use a battery to supply operating power. In addition, since the portable electronic device uses the corresponding rated power, each of the portable electronic devices must use a corresponding battery. In addition, because the size and shape of the battery is different, portable electronic devices are limited by the battery. Batteries used in the portable electronic devices include a primary battery that can not be charged and a secondary battery that can be charged. The secondary battery may be a nickel-based battery (Ni-Cd, Ni-Mh, etc.) or a lithium-based battery (Li-ion, etc.). The portable electronic devices mainly use a secondary battery, and particularly, a lithium ion battery (Li-ion) battery in the case of a mobile phone. The battery used in the mobile phone consists of a battery cell (bear cell), a protection circuit and a case.

Therefore, a separate charging device for charging the battery is required. However, the charging device may charge only a battery of a preset type. That is, since the charging device is designed to correspond to the portable electronic device one-to-one, it is not possible to charge the battery of the portable device having a different battery size and charging capacity. Therefore, the charging device has a problem that cannot be used in other portable electronic devices other than the corresponding portable electronic devices. In order to solve the above problems, the charging device may generate a charging power corresponding to the battery type.

In addition, the charging device typically rectifies AC power to charge the battery. Therefore, the charging device for charging the battery must be kept connected to AC power. That is, since the charging device rectifies AC power to generate charging power of the battery, in order to charge the battery, the charging device must be connected to the AC power. Therefore, since the charging device is inconvenient to carry, it is common to use it fixed at a home or a specific location. Therefore, the user of the portable electronic device using the battery is limited in using the electronic device according to the state of charge of the battery, there is a problem that can not use the corresponding portable electronic device when the battery is discharged. In addition, even when carrying the charging device, it is impossible to charge the battery in a location (place) where AC power cannot be connected. In order to solve the above problems, it is necessary to prepare a separate battery or use a charging device capable of charging the battery without using an AC power source.

As described above, as the types of portable electronic devices that use batteries are diversified and their use increases, demand for a battery device that can supply power to the portable electronic devices for a long time and is portable is increasing. In addition, as the types of portable electronic devices that can be used are increased, the demand for battery devices capable of supplying various kinds of power is also increasing. In other words, a battery used for portable electronic devices has a large capacity, is convenient to carry, and can supply a variety of power sources. In addition, carrying a separate battery or charger with only the function of supplying power is inefficient and there is a need for ways to solve the problem.

Accordingly, an object of the present invention is to provide a battery and a battery charging device for supplying power of a portable electronic device.

Another object of the present invention is to provide a battery device capable of supplying power to a portable electronic device for a long time.

Still another object of the present invention is to provide a battery device capable of supplying power sources having power voltage levels of different sizes to at least one portable electronic device.

Still another object of the present invention is to provide a device capable of charging a battery of a portable electronic device using a battery device having at least two unit batteries.

Another object of the present invention is to provide a device that can be used as a battery of a portable electronic device by using a battery device having at least two unit batteries and at the same time can charge the battery of the portable electronic device.

1 is a diagram illustrating a configuration of an apparatus for charging a portable battery according to an embodiment of the present invention.

2A and 2C are views illustrating an appearance of a portable battery charging apparatus according to an embodiment of the present invention. FIG. 2A is a perspective view of a charger according to an embodiment of the present invention, and FIG. 2B is an embodiment of the present invention. Is a perspective view of a power supply and a battery mount, and FIG. 2C is a cross-sectional view of a power supply and a battery mount according to an embodiment of the present invention;

Figure 3a is a perspective view of a power supply according to a second embodiment of the present invention, Figure 3b is a perspective view of a battery charger according to a second embodiment of the present invention

4 is a block diagram illustrating the charger of FIG. 1.

FIG. 5 is a diagram illustrating in detail the configuration of each part of FIG. 4. FIG.

6 is a block diagram illustrating the power supply of FIG. 1.

FIG. 7 is a diagram illustrating in detail the respective components of FIG. 6. FIG.

DETAILED DESCRIPTION A detailed description of preferred embodiments of the present invention will now be described with reference to the accompanying drawings. It should be noted that the same components in the figures represent the same numerals wherever possible.

In the following description, specific details such as the charge voltage of the battery and the number of unit batteries, etc. are shown to provide a more general understanding of the present invention. It will be apparent to one of ordinary skill in the art that the present invention may be readily practiced without these specific details and also by their modifications.

The battery device of a portable electronic device according to an embodiment of the present invention has a function that can be worn or carried on the body when the user routinely activities, to supply the operating power to the portable electronic device using such a battery device. To this end, the battery device includes at least two unit batteries and constitutes a multi-unit battery. That is, in order to efficiently provide the necessary power as the portable electronic device is miniaturized and diversified, the battery device is composed of a multi-unit battery having at least two small capacity unit batteries connected thereto, and also by adjusting the output power, One portable electronic device can supply operating power. In addition, when operating power is supplied to a portable electronic device using a specific type of battery, the battery device can be used as a charging device for charging the battery of the portable electronic device.

Accordingly, a battery device according to an embodiment of the present invention includes a large capacity battery composed of a plurality of unit batteries, and the battery device may supply at least one kind of power as a power supply device to supply operating power to a portable electronic device. have. In addition, the battery device may be used as a device for charging the battery of the portable electronic device by connecting a battery mounter for mounting the battery of the portable electronic device.

1 is a view showing the configuration of a battery charging device of a portable electronic device according to an embodiment of the present invention.

Referring to FIG. 1, a charging device for a portable electronic device according to an embodiment of the present invention includes a charger 100, a power supply 200, and a battery mounter 300. The charger 100 is connected to an AC power source, rectifies the AC power source and converts the DC power source, and adjusts and converts the converted DC power source to the charging power of the battery. The power supply 200 includes a plurality of unit batteries, charges each unit battery according to the charging power input from the charger 100, and can be used as a large capacity battery using the unit batteries. Therefore, the power supply 200 can supply a large amount of battery power, and also generates at least one output power by properly dividing the battery power. In addition, a battery mounter 300 is connected to the power supply 200, and the output power may be applied to the battery mounter 300 to be used as a second charger.

Here, the charger 100 and the power supply 200 may have a separate structure or may be configured in one piece, and the power supply 200 and the battery mounter 300 may be separated and configured independently or in one piece. In addition, the power supply 200 and the battery mounter 300 may be configured in a removable form. In the embodiment of the present invention described below, the battery charger 300 will be described on the assumption that the battery of the mobile phone can be attached or detached, but can also be implemented as a device that can remove the battery of other portable electronic devices.

In addition, terms used in the embodiments of the present invention described below are defined as follows. The charger 100 refers to a device capable of charging multiple batteries by converting AC power into DC power. In addition, the power supply 200 includes multi-batteries capable of generating a large amount of power, and generates an output power having one or more power levels by properly dividing the power output from the multi-batteries, and is also a portable device mounted on the battery charger 300. It refers to a device that selects the output power suitable for the battery of the electronic device to supply the charging power of the mounted battery.

2A to 2C are perspective views and cross-sectional views of the charger 100, the power supply 200, and the battery charger 300 according to the first embodiment of the present invention.

Referring to FIG. 2A, the charger 100 is connected to the AC power through the AC power cable 191, and is connected to the power supply 200 through the cable 192, and does not include the battery charger 300. In this case, the charger 100 may be configured to be directly connected to an AC power outlet through a plug without using an AC power cable 191. In addition, the charger 100 includes a detector for detecting a charging state of the batteries included in the power supply 200 and a display unit for displaying the charging states of the batteries. The charger 100 of FIG. 2A illustrates a configuration of a display unit when the power supply 200 includes three unit batteries, wherein the display elements 141 to 143 display a charging state of each unit battery. The display elements 141 to 143 may use a light emitting diode (LED).

Referring to FIG. 2B, when the cable 192 of the charger 100 is connected to the terminal 291 of the power supply 200, charging power is supplied to each of the unit batteries in the power supply 200. In addition, the power supply 200 includes a detector for detecting a state of charge of each battery and display elements 251-253 for displaying the state of charge of the battery according to the result. Herein, it is assumed that the power supply 200 includes three unit batteries, and thus the display elements 251 to 253 respectively display charge states of corresponding batteries. In addition, the power supply 200 serves to supply the power charged in the batteries to the operating power of the portable electronic device. In FIG. 2B, the cable 292 is a cable for supplying the output power of the power supply 200 to the operating power of the portable electronic device.

In addition, the power supply 200 may be connected to a battery mounter 300 capable of charging a battery of a specific portable electronic device. 2 assumes that the battery charger 300 is integrated with the power supply 200. However, the battery device 300 may be designed to be separated from the power supply 200 and connected by a cable, and may also be designed to be detachably attached to the power supply 200. In FIG. 2B, it is assumed that the battery mounter 300 mounts a battery of a mobile phone. However, the battery charger 300 may be designed differently according to the portable electronic device. In addition, the power supply 200 should be able to generate a corresponding output power according to the charging capacity of the battery mounted in the battery mounter 300. Therefore, the power supply 200 is provided with a voltage generator for adjusting the output voltage, the voltage generator generates a corresponding output voltage by an external operation. In an embodiment of the present invention, the selection switch 321 is provided at the outside, and the desired output voltage is selected through the selection switch 321. In this case, the output voltage may be selected according to the charge capacity of the battery mounted in the battery charger 300. In addition, in FIG. 2B, the display device 254 displays a state of charge of the battery mounted in the battery charger 300. In this case, the display elements 251-254 become the display unit of the power supply 200.

FIG. 2C is a cross-sectional view of the power supply 200 and the battery charger 300 as shown in FIG. 2B. Here, the unit batteries may be arranged by stacking unit batteries as shown in FIG. 2C, or may be arranged to be parallel to the case surface of the power supply 200.

3A and 3B are diagrams showing examples of the configuration of the power supply 200 and the battery charger 300 according to the second embodiment of the present invention. Here, the charger 100 supplying charging power to the power supply 200 may use a charger as shown in FIG. 3A.

Referring to FIG. 3A, the power supply 200 is extended in a horizontal direction of a belt made of natural or artificial leather, and the power supply 200 is positioned and fixed inside the belt when bonding the leathers of the outer and inner surfaces of the belt. Be sure to The power supply 200 includes a battery B1-B3 and a printed circuit board (PCB) of the circuit unit, and the batteries and the PCB extend in the horizontal direction of the waistband. The PCB of the power supply 200 applies the charging power supplied from the charger 100 through the input terminal 291 to the batteries B1-B3, thereby performing the charging operation by the charging power supplied with the batteries B1-B3. . In addition, the PCB adjusts the power output from the batteries B1-B3 to the set power level, and supplies the power to the external portable electronic device and / or the battery charger 300 through the output terminals 292 and / or 293, respectively. .

3B is a view illustrating a state in which the battery mounter 300 is mounted on a waistband in which the power supply 200 is built. Here, the battery charger 300 should be connected to the terminal 293 of FIG. 2A.

4 is a diagram illustrating a configuration of the charger 100.

Referring to FIG. 4, an AC / DC converter 110 converts and rectifies AC power received through an AC power cable 191 to convert it into DC power. The charging power generation unit 120 regulates the converted DC power to a rated voltage of the charging power level of the power supply 200 to generate charging power. In this case, it is assumed that the charging power generation unit 120 has an output terminal corresponding to the number of batteries of the power supply 200. This is to simultaneously charge the batteries provided in the power supply 200 in a parallel form. However, the charger 100 may output the output power of the charging power generator 120 to a terminal of one line, and may be configured in a serial manner in which each unit battery is sequentially selected and charged.

The charging power output from the charging power generating unit 120 is applied to the power supply 192 through the output terminal 192 and simultaneously to the overcharge detecting unit 130. The overcharge detector 120 inputs charging voltages of the batteries of the power supply 200. The overcharge detection unit 120 may be designed to set a voltage corresponding to the charging voltage of the battery as a reference voltage in advance, and compare the reference voltage with the charging voltage of the battery to detect whether the battery is charged. At this time, the output state of the overcharge detection unit 120 may be generated as an uncharged signal and a charge completion signal. The output of the overcharge detection unit 130 is applied to the charging power generation unit 120 and the display unit 140. At this time, the charging power generating unit 120 maintains the path of the charging power output to the corresponding battery when the uncharged signal is output from the overcharge detecting unit 130, and the path of the charging power applied to the corresponding battery when the charging completion signal is output. To block. In addition, when the overcharge detection unit 130 outputs an uncharged signal, the display unit 140 indicates that the display device of the corresponding battery is in the charging state, and displays that the display device of the corresponding battery in which the charge completion signal is output is in the charge completion state. .

In FIG. 4, the converter 110 transforms and rectifies the input AC power into DC power. Then, the charging power generator 120 adjusts the converted DC power to the charging power level of the unit battery of the power supply 192 and outputs the adjusted power. In this case, the method of adjusting the charging power level may use a method of dividing the converted DC power and a method of adjusting the charging power voltage using a regulator. As described above, the output of the charging power generation unit 120 adjusted to the charging power level of the unit battery is supplied to each of the unit batteries. Each unit battery performs the charging operation by the charging power supplied as described above. At this time, the charger 100 determines whether the batteries are overcharged, controls the charging operation, and also displays the charging state of the batteries through the external display unit 140. To this end, the overcharge detection unit 130 should be provided with a number corresponding to the number of batteries, so that each overcharge detection unit detects the state of charge of the corresponding battery. In this case, the charging operation may be terminated at the same time, but the charging time may vary according to the charged voltage of the battery and the performance of the battery. Accordingly, the overcharge detection unit 130 detects the voltages charged in the corresponding batteries, and compares them with a preset reference voltage to determine whether the corresponding battery is overcharged. When the corresponding battery is in the charged state, the charging power detector 120 controls the supply of charging power applied to the corresponding battery, and simultaneously controls the corresponding display device of the display unit 140 to display the charging completion state. However, if the corresponding battery is being charged, the charging power detector 120 controls the charging power supplied to the corresponding battery to maintain the path of the charging power supplied to the corresponding battery and controls the corresponding display device of the display unit 140 to indicate that the battery is being charged.

FIG. 5 is a diagram illustrating a detailed configuration of the charger 100 configured as in FIG. 4.

Referring to FIG. 5, the conversion unit 110 converts the input AC power into DC power. The transformer T1 of the converter 110 transforms an input AC power, the bridge diode BD rectifies the transformed AC power, and the resistor R1 and the capacitor C1 convert the rectified power into a DC power.

The charging power generation unit 120 converts the DC power output from the conversion unit 110 into a rated power of the charging power level of the unit battery and outputs the converted power. The battery charging method includes a quick charge, a normal charge, and a trickle charge method. In the embodiment of the present invention, it is assumed that the fast charging and microcharging methods are used. Therefore, the charging power generation unit 120 is composed of 121-12N for generating a quick charging power of each battery, 151 for generating a fine charging power, and a selector 161-16N for selecting the fast charging power and the fine charging power. . In the exemplary embodiment of the present invention, a case in which the charging power generating units generating the rapid charging power are configured as the number 121-12 N corresponding to the number of unit batteries is described as an example. It can be configured as one rapid charging power generation unit.

Looking at the operation of the charging power generation unit 120, the rapid charging power generation unit 121 generates a rapid charging power supplied to the unit battery B1 of the power supply 200. Here, the function of setting the rapid charging power as the rated voltage is performed by zener diode D11. That is, the zener diode D11 maintains the rated power for rapid charging, and the rated rapid charging power is supplied to the selector 161 by the on switching of the transistor Q11. In addition, the zener diode D21 of the rapid charging power generation unit 12N performs the same function as the zener diode D11 of the rapid charging power generation unit 121. The rapid charging power generated by the rapid charging power generation unit 12N becomes a power supplied to the unit battery BN. The selector 161-16N is controlled by a signal output from the overcharge detection unit 131-13N, which is connected to terminal I1 in a charging state and to terminal I2 in a charging complete state. The rapid charging power supplied as described above is supplied to the unit batteries B1-BN of the corresponding power supply 200, and thus, the unit batteries B1-BN of the power supply 200 perform rapid charging.

It is assumed that the unit batteries B1 -BN are Li-ion batteries of 3.8V, and the power for charging the batteries is 4.2V. Then, the zener diodes D11-D1N for generating the rated voltage may use a zener diode capable of generating a charging power of 4.2V.

When the charging power is supplied to the unit batteries, the batteries of the power supply 200 perform a charging operation. At this time, the overcharge detection unit 130 compares the charging voltage of each of the battery and a predetermined reference voltage to detect whether the overcharge. That is, the first overcharge detection unit 131 detects the charging voltage of the battery B1 of the power supply 200, and the Nth overcharge detection unit 13N detects the charging voltage of the battery BN. In this case, when the voltage charged in the batteries B1-BN is lower than the reference voltage, the overcharge detection unit 300 generates an uncharged signal. Then, the selector 161-16N selects the fast charging power inputted to the terminal I1 by the output of the corresponding overcharge detecting unit 130 and applies it to each corresponding battery B1-BN, and the display unit 140 applies the display element of the corresponding battery. The charging status is displayed.

When the fast charging power is supplied to the battery while repeating the above process, the batteries reach a full charge state. Then, the overcharge detection unit 130 for detecting whether the battery is fully charged in the fully charged state generates a charge completion signal of the corresponding battery. The corresponding selector in selector 160 is then switched to the I2 terminal. Then, the corresponding display element of the display unit 140 displays the charging completion state, and the selector 160 applies the output of the fine charge power generation unit 151 to the corresponding battery. The control diode D31 of the fine charge power generation unit 151 is a zener diode of a different standard from the zener diodes D11-D21, and performs a function of generating fine charge power. Therefore, the unit batteries of the power supply 200 perform a quick charging operation when connected to the charger 100, and perform a fine charging operation when the charging is completed. The state of charge of the batteries is displayed on the display unit 140.

6 is a diagram illustrating a configuration of a power supply 200 according to an embodiment of the present invention.

Referring to FIG. 6, the battery 210 includes a plurality of unit batteries, as shown in FIG. 2C. In the embodiment of the present invention, it is assumed that the unit batteries of the battery 210 are connected in series. In this case, it is assumed that the battery 210 is composed of three unit batteries, and the unit batteries are connected in series. The conversion unit 220 is a DC / DC converter that converts the DC power output from the battery 220 into DC power. In this case, the converter 220 may be omitted. The output power generating unit 230 generates at least one output power, which outputs to an external power output terminal 292 to be used as an operating power of a portable electronic device, and is used as a charging power of a battery mounted on the battery charger 300. Supplied. The overcharge detecting unit 240 detects the charging voltage of the battery mounted in the battery charger 300 and generates a signal of a charge completion or uncharged state. The voltage detector 260 detects the charging voltage of the battery 210. The display unit 250 displays the state of charge of the battery according to the output of the voltage detector 260, and displays the state of charge of the battery mounted in the battery mounter 300 according to the output of the overcharge detector 240.

First, the process of generating output voltages for use as an operating power source for at least one type of portable electronic device from the output of the battery 210 will be described.

The output power generation unit 230 adjusts the DC voltage output from the conversion unit 220 to the rated power of the required portable electronic device to perform the function. The first voltage generator 311-N voltage generator 31N of the output power generator 230 is designed according to the rated voltage of each portable electronic device. For example, assuming that a mobile phone uses a 3.6V battery, a notebook computer uses a 12V battery, and a cassette player uses 1.5V, the voltage V1 output from the first voltage generator 311 is 1.5V. It is designed to generate a rated voltage, the voltage V2 output from the second voltage generator 312 is designed to generate a rated voltage of 3.6V, the voltage V3 output from the third voltage generator 313 (not shown) is a rated voltage of 12V Design it to occur. As described above, the voltages V1 -VN generated by the first voltage generator 311 to the third voltage generator 31N are applied to the external output terminal 292. Therefore, after checking the rated power of the portable electronic device, the power input terminal of the portable electronic device may be connected to a terminal for outputting a corresponding voltage among the respective terminals VO1 -VON of the external output terminal 292.

Secondly, the operation of generating the charging power of the battery by connecting the battery mounter 300 to the power supply 200 will be described.

In addition, when the battery charger 300 is connected to the power supply 200, the power supply 200 operates as a charger of the battery mounted on the battery charger 300. At this time, the user operates the selection switch 321 to set the rated power of the battery mounted in the battery charger 300. Then, the selector 320 selects the output of the voltage generator selected from the output voltages V1-VN of the first voltage generator 311 to the Nth voltage generator 31N. The power selected by the selector 320 is applied to the battery charger 300 as charging power.

When the charging power is supplied to the battery charger 300, the battery mounted in the battery charger 300 performs a charging operation. In this case, the overcharge detecting unit 240 detects whether the battery mounted in each of the battery charger 300 is overcharged. At this time, when the charging voltage of the battery mounted on the battery charger 300 is lower than the set voltage, the overcharge detecting unit 240 generates an uncharged signal. Then, the selection unit 320 applies the selected voltage to the battery charger 300 by the uncharged signal, and the display unit 250 indicates that the battery mounted in the battery charger 300 is in a charging state. However, when the charging voltage of the battery mounted on the battery charger 300 reaches a set voltage, the overcharge detecting unit 240 generates a charging completion signal. Then, the selection unit 320 blocks the passage of the power applied to the battery charger 300 by the charging completion signal, and the display unit 250 indicates that the battery mounted in the battery charger 300 is in a charging completion state.

FIG. 7 is a diagram illustrating a detailed configuration of a power supply as in FIG. 6.

Here, it is assumed that the battery 210 is composed of three unit batteries B-B3 as shown in FIG. 2C, and the power sources for supplying the portable electronic device are three power sources V1-V3. Accordingly, the display unit 250 includes three display elements 251-253 for displaying the charging state of each unit battery B1-B3 as shown in FIG. 2B, and the voltage detector 260 also includes Three voltage detectors are provided for detecting the state of charge. Each of the voltage detectors detects a charging voltage of a corresponding unit battery, and when the voltage charged in the battery is lower than a set voltage, the corresponding display device is driven. In addition, the zener diodes D61, D71, and D81 of the first voltage generator 311 to the third voltage generator 313 use zener diodes having a specification capable of generating rated power of corresponding portable electronic devices, respectively.

In addition, the selection switch 321 may be implemented using a slide switch as shown in FIG. In this case, the selection switch 321 selects four input terminal positions of the selection unit 320. First, when the first input terminal I11 is selected according to the operation of the selection switch 321, the selector 321 cuts off power paths of the power supply 200 and the battery charger 300. In this case, power is not supplied to the battery charger 300. Secondly, when the user installs the battery in the battery mounter 300 and checks the rated power of the mounted battery, and operates the selection switch 321, the selection unit 320 may be configured according to the position of the selection switch 321. A terminal for inputting an output of a voltage generator corresponding to the output voltages of the 313 and the battery charger 300 is connected. In this case, the selected voltage is applied to the battery charger 300.

First, the process of generating three output voltages from the output of the battery 210 will be described.

The output power generation unit 230 adjusts the DC voltage output from the conversion unit 220 to the rated power of the required portable electronic device to perform the function. Zener diodes D61, D71, and D81 of the voltage generators 311 to 313 determine a rated voltage to be output. The output rated voltages may be set to rated voltages of the most commonly used portable electronic devices. Accordingly, the voltage generators 311-313 generate output voltages V1-V3 rated by the zener diodes d61, D71, and D81, respectively, and output them to the output terminal 292. Therefore, after the user checks the rated power of the portable electronic device, if the power input terminal of the portable electronic device is connected to a terminal for outputting a corresponding voltage among the VO1-VON terminals of the external output terminal 292, the corresponding portable electronic device Operating power is supplied. In this case, when the selector 320 is connected to the terminal I11, the power supply 200 does not supply power to the battery charger 300. In this case, even when the battery charger 300 is connected to the power supply 300, the battery does not perform a charging operation.

Secondly, the operation of supplying the charging power of the battery of the battery charger 300 will be described.

After the user checks the rated power of the battery mounted in the battery charger 300, the user operates the selection switch 321 to set the desired rated output power. It is assumed here that the user has selected the V1 power source. Then, the selector 320 connects the input terminal I2 and the battery charger 300 so that the output voltage V1 of the first voltage generator 311 is applied to the battery charger 300 as charging power. When the charging power supply V1 is supplied to the battery charger 300, the battery mounted in the battery charger 300 performs a charging operation. In this case, the overcharge detecting unit 240 detects whether the battery mounted in each of the battery charger 300 is overcharged. Here, the overcharge detecting unit 240 sets the voltage of the battery in the state of charge completion as a reference voltage. Therefore, when the battery charger 300 has at least two types or when the rated voltage of the battery that can be mounted on the battery charger 300 is two or more types, the overcharge detecting unit 240 has a corresponding number of means for generating a reference voltage. do. In addition, the output of the selection switch 321 may be applied to the overcharge detecting unit 240 so that the reference voltage of the battery according to the user's selection may be selected.

When the battery mounted in the battery charger 300 performs the charging operation, the overcharge detecting unit 240 detects the charging voltage of the battery and compares it with the reference voltage. In this case, when the charging voltage of the battery mounted in the battery charger 300 is lower than the set reference voltage, the overcharge detecting unit 240 generates an uncharged signal. Then, the selection unit 320 applies the selected V1 voltage to the battery charger 300 by the uncharged signal, and the display unit 321 of the display unit 250 indicates that the battery mounted in the battery charger 300 is being charged. However, when the charging voltage of the battery mounted on the battery charger 300 reaches a set voltage, the overcharge detecting unit 240 generates a charging completion signal. Then, the selector 320 blocks the passage of the V1 power source to the battery charger 300 by the charging completion signal, and the display unit 250 indicates that the battery mounted in the battery charger 300 is in a charging completion state.

As described above, the battery charger of the present invention can supply operating powers of various portable electronic devices, and it is easy to carry, so that even if the battery of the portable electronic devices is consumed, it can be immediately used as an alternative power source. In addition, a battery mounter may be attached to the battery device of the present invention, and thus may be used as a charging device for a battery to be mounted. In addition, the battery device of the present invention can generate a plurality of power sources at the same time, it is possible to use a plurality of portable electronic devices at the same time outdoors, it can also supply the operating power of the portable electronic devices and the charging power of the battery mounted on the battery mounting device at the same time. In addition, since the battery charger of the present invention is easy to carry, it is also possible to charge batteries of various terminations even where AC power is not supplied.

Claims (2)

In the battery charging device having a power supply including a charger and at least two unit batteries, The charger, Converter which converts AC power into DC power, And a charging power generation unit for converting the converted DC power into charging power of the unit battery. The power supply, The unit batteries charged by the power output from the charger; Comprising at least one output terminal, consisting of a voltage generator for supplying the output terminal by adjusting the charging power of the unit batteries to a predetermined rated voltage, respectively, The battery charger is characterized in that the charger and the power supply is connected via a power cable can be separated / connected. A battery charging device comprising a charger, a power supply including at least two unit batteries, and a battery charger connected to the power supply, The charger, Converter which converts AC power into DC power, And a charging power generation unit for converting the converted DC power into charging power of the unit battery. The power supply, The unit batteries charged by the power output from the charger; A voltage generator having at least one output terminal and adjusting the charging power of the unit batteries to a preset rated voltage and supplying the output terminals to the output terminals; It is composed of a selection unit for selecting the output of the voltage generator for generating the charging power of the battery mounted on the battery mounter by the user's selection and supplying to the battery mounter, The battery charger is characterized in that the charger and the power supply is connected via a power cable can be separated / connected.