JP2004364379A - Matching type home information appliance power supply unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a matching type home information appliance power supply unit of improved function where wearing of a low voltage supply system is settled, and wearing in power source is saved during supplying from a power supply unit. <P>SOLUTION: The matching type home information appliance power supply unit is composed of a power source input unit, a rectifying unit, and a step-up unit. The power source input unit inputs an AC voltage into the rectifying unit, and the rectifying unit performs rectification to output an intermediate DC voltage. The intermediate DC voltage is processed with the step-up unit, providing an AC voltage in high voltage mode. In this power supply unit, wearing in power source occurs only with the step-up unit itself, reducing wearing in power supply for improved functionality. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a kind of power supply apparatus for matching information home appliances, and more particularly to a power supply apparatus with reduced power supply wear of home appliances and enhanced functions.
[0002]
[Prior art]
As is well known, information electronics products such as plasma televisions and liquid crystal displays are generally equipped with various electronic circuit designs, and the only power supply device that supplies power to information appliances is a low-voltage power supply system. And is as shown in FIG. Among them, the lamps used for the backlight of the liquid crystal display are all CCFLs, and these CCFLs need to be driven at a high voltage (several hundred to 1,000 volts or more).
[0003]
According to the conventional technology, after inputting an AC voltage, the medium voltage rectification unit converts the voltage to a medium voltage DC voltage and outputs the converted voltage. The conversion unit further converts the voltage to a low voltage DC voltage and outputs the voltage. After being processed by the unit (inverter), it is output as an AC voltage in a high voltage form, and the CCFL is driven by the high voltage. At this time, the efficiency of the above-described boosting unit is set to 80%, and when the conversion unit efficiency of the previous stage is set to 80%, the total efficiency (voltage sent to the CCFL) is 80% × 80% = 64%. Become.
[0004]
Therefore, if one large display uses 20 lamps, and each lamp has 5W to 10W, the energy consumption is 36W to 72W, so that the consumption of the information home electric power supply device is very large and functional. Can not be enhanced.
[0005]
[Problems to be solved by the invention]
The main object of the present invention is to solve the above-mentioned drawbacks of the prior art and to eliminate the drawbacks. The power supply device for information home appliances according to the present invention eliminates the wear of the low-voltage voltage supply system, can reduce power consumption when power is supplied to the power supply device, and has enhanced functions.
[0006]
[Means for Solving the Problems]
The invention according to claim 1 is a matched information home appliance power supply device that rectifies and outputs a medium-voltage DC voltage,
A power input unit (1) having an output terminal for outputting an AC power,
A first output terminal (22) connected to an output terminal of the power input unit (1), and a first output terminal (22) for rectifying an AC voltage and outputting the rectified AC voltage as a medium DC voltage; A rectifying unit (2) having an output end (23);
A step-up unit (3) connected to the first output terminal (22) of the rectifier unit (2) and configured to convert a medium-voltage DC voltage into a high-voltage form and output the converted voltage;
A conversion unit (4) for converting a medium-voltage DC voltage to a low-voltage DC voltage (41) and outputting the converted voltage;
It is a matched information home appliance power supply device characterized by having:
According to a second aspect of the present invention, there is provided the matched information home appliance power supply device according to the first aspect, wherein the rectifier unit (2) is a half-wave bridge rectifier or a full-wave bridge rectifier. Alternatively, the switching unit (6) is connected during the half-wave or full-wave bridge rectification, and the switching unit (6) is mechanical or electronic. It is a matched type information home appliance power supply device characterized by the following.
According to a third aspect of the present invention, the rectifying unit (2) is composed of a half-wave or full-wave voltage doubler unit composed of at least one capacitor and a diode. It is a matched-type information home appliance power supply device characterized by that.
According to a fourth aspect of the present invention, there is provided the power supply device of the matched type according to the first aspect, wherein the step-up unit (3) is a coil type non-resonant pulse width modulation type, a coil resonance type, or a piezoelectric ceramic transformer. And a power supply device for matched information home appliances.
According to a fifth aspect of the present invention, there is provided the power supply apparatus of the matched type information home appliance according to the first aspect, wherein a plurality of sets of conversion units (4) are provided, a single set is provided, or an optional power supply system of plus or minus. Characterized in that the power supply device is a matched information home appliance power supply device.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
The power supply device of the present invention is composed of a power input unit, a rectifying unit, and a boosting unit. The power input unit inputs an AC voltage to the rectifying unit, and the rectifying unit rectifies the medium voltage DC voltage. After the intermediate voltage DC voltage is processed by the boosting unit, an AC voltage in a high voltage form is obtained. In this power supply device, the power supply wear is only present in the booster unit itself, whereby the power supply wear can be reduced and the function is enhanced.
[0008]
【Example】
FIG. 2 is a circuit block diagram of a power supply device for a matched information home appliance according to the present invention. As shown in the figure, the power supply device of the present invention is composed of a power input unit (1), a rectifier unit (2), a boost unit (3), a conversion unit (4), and a load (5). , It inputs the medium voltage power output from the direct rectifier unit (2) directly into the booster unit (3), so that the power consumption is slightly in the booster unit (3), thus saving energy consumption and function Has been raised.
[0009]
The power input unit (1) described above provides an AC voltage of 110-220V.
[0010]
The rectifier unit (2) has an input terminal (21) for inputting the above-described AC power, and the rectifier unit (2) rectifies the AC power and outputs a DC voltage of about 150 V to 300 V of a medium voltage. The rectified DC voltage is output from the first output terminal (22) and the second output terminal (23) of the rectification unit (2).
[0011]
The boosting unit (3) is composed of an inverter having a large wattage and a total function of about 80%, and the input terminal of the boosting unit (3) is connected to the first output terminal (1) of the rectifying unit (2). After being connected to 22), the DC voltage output from the rectifier unit (2) is converted and output as a high-voltage AC voltage.
[0012]
The conversion unit (4) is connected to the second output terminal (23) of the rectification unit (2), and converts the medium-voltage DC voltage output from the rectification unit (2) to a low-voltage DC voltage (± 5V, (± 15 V, ± 24 V, etc.) (41) and output it to provide a low DC power supply required by other circuits in the device.
[0013]
The load (5) is not limited to the CCFL, but may be any one of an ozone generator and a negative ion generator. The load (5) is connected to the output terminal of the booster unit (3). It is driven by the high voltage output from the unit (3).
[0014]
When the power input unit (1) inputs the AC power to the rectifier unit (2), the rectifier unit (2) rectifies the AC power and outputs it as a medium-voltage DC power (150 to 300 DCV); The medium-voltage DC power supply is output to the boosting unit (3) and the conversion unit (4), respectively. The above-described boosting unit (3) converts the medium-voltage DC voltage output from the rectification unit (2) to 500 V to The voltage is output as an AC voltage of 1000 V, and the voltage drives the load (5) connected to the boosting unit (3).
[0015]
The above-mentioned booster unit (3) (inverter) for converting a low voltage to a high voltage first forms the medium-voltage DC voltage after the rectification by the rectification unit (2) into a high-voltage form, thereby providing a low-voltage power supply module. Low-voltage power supply, which reduced the wear of the battery and reduced the function directly from 64% to just the boost unit (3) itself (about 80% or more), and originally needed to increase wattage to provide extra electrical energy The size of the module can be reduced and its function can also be as efficient as a smaller power supply module, with a clear improvement.
[0016]
FIG. 3 is a schematic view showing another embodiment of the present invention. As shown, the rectifying unit (2) employed in the power supply device of the matched information home appliance according to the present invention rectifies an AC voltage and converts a medium voltage DC. Output as voltage. The rectifier unit (2) employs half-wave bridge rectification or full-wave bridge rectification, or employs a voltage stabilization method, thereby converting an AC voltage to a medium-voltage DC voltage and outputting the converted voltage.
[0017]
A switching unit (6) is connected between the half-wave or full-wave rectification, and the switching unit (6) is composed of either a mechanical or electronic switch. Alternatively, when performing full-wave bridge rectification, switching is performed by this switching unit (6).
[0018]
FIG. 4 is a schematic view showing another embodiment of the present invention. As shown, the rectifying unit (2) employed in the power supply device of the matched information home appliance according to the present invention is composed of at least one capacitor and a diode. The input AC voltage is doubled using the half-wave or full-wave voltage doubler unit and output as a medium voltage DC voltage.
[0019]
FIG. 5 is a schematic diagram showing still another embodiment of the present invention. As shown in the figure, the step-up unit (3) employed in the power supply device of the matching type information home appliance of the present invention may be a coil type non-resonant pulse width modulation type, a coil resonance type, or a piezoelectric ceramic transformer. And converts the medium-voltage DC voltage into a high-voltage AC voltage and outputs it.
[0020]
FIGS. 6, 7 and 8 show still another embodiment of the present invention. As shown, the rectifier unit (2) designed according to the present invention rectifies an AC voltage and outputs it as a medium voltage DC voltage. The medium voltage DC voltage output is a coil type or a CCFL driving device of a high voltage AC inverter. The CCFL drive achieves energy savings and enhances its function.
[0021]
Further, the conversion unit (4) employed in the present invention may be provided in a plurality of sets, a single set, or in any one type of a plus or minus power supply system.
[0022]
The above is only the description of the preferred embodiment of the present invention, and does not limit the scope of the present invention, and any modification or alteration of details that can be made based on the present invention shall fall within the scope of the present invention. I do.
[0023]
【The invention's effect】
The present invention solves and eliminates the disadvantages of the prior art. The information appliance power supply device of the present invention is composed of a power input unit, a rectification unit, and a boost unit. The power input unit inputs an AC voltage to the rectification unit, and the rectification unit rectifies and outputs a medium-voltage DC voltage. Then, after the intermediate voltage DC voltage is processed by the boosting unit, an AC voltage in a high voltage form is obtained. In this power supply device, the power supply wear is only present in the booster unit itself, whereby the power supply wear can be reduced and the function is enhanced.
[Brief description of the drawings]
FIG. 1 is an electric circuit block diagram of a conventional information home appliance power supply device.
FIG. 2 is an electric circuit block diagram of the power supply device of the matching type information home appliance of the present invention.
FIG. 3 is a schematic view showing another embodiment of the present invention.
FIG. 4 is a schematic view showing another embodiment of the present invention.
FIG. 5 is a schematic view showing still another embodiment of the present invention.
FIG. 6 is a view showing a use state of supplying a medium DC voltage to a CCFL driving device according to the present invention;
FIG. 7 is a view showing a use state of supplying a medium DC voltage to a CCFL driving device according to the present invention;
FIG. 8 is a diagram showing a state of use in which a medium DC voltage is supplied to a CCFL driving device according to the present invention.
[Explanation of symbols]
(1) Power input unit (2) Rectifier unit (21) Input terminal (22) First output terminal (23) Second output terminal (3) Boost unit (4) Conversion unit (41) Low voltage DC voltage ( 5) Load (6) Switching unit

Claims (5)

In a matched information home appliance power supply that rectifies and outputs a medium voltage DC voltage,
A power input unit (1) having an output terminal for outputting an AC power,
A first output terminal (22) connected to an output terminal of the power input unit (1), and a first output terminal (22) for rectifying an AC voltage and outputting the rectified AC voltage as a medium DC voltage; A rectifying unit (2) having an output end (23);
A step-up unit (3) connected to the first output terminal (22) of the rectifier unit (2) to convert a medium-voltage DC voltage into a high-voltage form and output the converted voltage;
A conversion unit (4) for converting a medium-voltage DC voltage to a low-voltage DC voltage (41) and outputting the converted voltage;
A power supply device for matching information home appliances, characterized by comprising: 2. The power supply system of claim 1, wherein the rectifying unit (2) is of a half-wave bridge rectification type, a full-wave bridge rectification type, or a voltage stabilization type. A switching unit (6) is connected during half-wave or full-wave bridge rectification, and the switching unit (6) is mechanical or electronic; Information home appliance power supply. 2. A power supply system according to claim 1, wherein the rectifier unit (2) is composed of a half-wave or full-wave doubling unit composed of at least one capacitor and a diode. Power supply device for integrated information appliances. 2. The power supply system of claim 1, wherein the step-up unit (3) is a coil type non-resonant pulse width modulation type, a coil resonance type, or a piezoelectric ceramic transformer. A matched-type information home appliance power supply device, characterized in that: 2. The power supply device for a matched information home appliance according to claim 1, wherein a plurality of conversion units (4) are provided, a single set is provided, or a conversion unit (4) is configured in any one of a positive and negative power supply system. A matched-type information home appliance power supply device, characterized in that:

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