TW201412004A - Uninterruptible power source converter - Google Patents

Abstract

An uninterruptible power source converter has a first power source set for providing a first DC voltage; a first diode having a first anode and a first cathode, wherein the first anode is coupled to the first power source set; a second power source set for providing a second DC voltage; a second diode having a second anode and a second cathode, wherein the second anode is coupled to the second power source set; and a DC/DC converter having an input end and an output end, wherein the input end is respectively coupled to the first cathode and the second cathode, and the output end is used to provide a DC output voltage.

Description

Uninterruptible power converter

The present invention relates to an uninterruptible power supply device, and more particularly to an uninterruptible power converter for powering small electronic devices.

Please refer to FIG. 1 , which is a block diagram of a conventional uninterruptible power supply device 100 for supplying power to a load 105 . As shown in FIG. 1, the uninterruptible power supply device 100 has an AC/DC converter 101, a DC/DC converter 102, a battery 103, and a switch 104.

The AC/DC converter 101 is configured to perform an AC to DC power conversion to convert an AC power source AC to a DC power source V _OUT .

The DC/DC converter 102 is configured to perform a DC to DC power conversion to convert the output voltage of the battery 103 to the DC power source V _OUT .

The battery 103 is generally constructed of a rechargeable battery.

The switch 104, generally comprised of a relay, is used to select the AC/DC converter 101 or the DC/DC converter 102 to provide the DC power source _VOUT .

The load 105 is powered by the AC/DC converter 101 during normal operation. When the AC power source AC is interrupted, the switch 104 switches the connection point to cause the DC/DC converter 102 to take over the power supply operation of the AC/DC converter 101.

However, since the contact switching of the switch 104 takes time, the voltage of the DC power source V _OUT will fall down during the switching process, which affects the normal operation of the load 105. For example, when the load 105 is a wireless sharer, and a user is downloading data of a website through the wireless sharer, the wireless sharer suddenly falls down due to the voltage of the DC power supply V _OUT . The interruption is unpleasant for the user; or the load 105 is a surveillance network camera (IP CAM), if the video is suddenly interrupted due to a power outage, there may be Security issues.

In order to solve the aforementioned problems, we need a novel uninterruptible power converter.

It is an object of the present invention to disclose an uninterruptible power converter that provides a stable DC power supply to a small electronic device.

Another object of the present invention is to disclose an uninterruptible power converter that can provide a function of automatically switching a power supply using at least two diodes.

Another object of the present invention is to disclose an uninterruptible power converter that can provide a stable DC power source by placing a DC/DC converter at the output of the uninterruptible power converter.

It is yet another object of the present invention to disclose an uninterruptible power converter that provides a compact structure by combining with a plug.

To achieve the above objectives, an uninterruptible power converter is proposed which has:

a first power supply group for providing a first DC voltage;

a first diode having a first anode and a first cathode, wherein the first anode is coupled to the first power source;

a second power supply group for providing a second DC voltage;

a second diode having a second anode and a second cathode, wherein the second anode is coupled to the second power pack;

A DC/DC converter having an input terminal and an output terminal, wherein the input terminal is coupled to the first cathode and the second cathode, respectively, and the output terminal is configured to provide a DC output voltage.

In an embodiment, the first power pack has an AC/DC converter.

In one embodiment, the first diode system is a Schottky diode.

In an embodiment, the second power pack has a battery pack.

In one embodiment, the battery pack is comprised of a battery selected from the group consisting of a primary battery, a secondary battery, and any combination thereof.

In one embodiment, the primary battery is an alkaline battery.

In one embodiment, the secondary battery is a battery selected from the group consisting of a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, and a lithium battery.

In an embodiment, the battery pack further has a charging circuit.

In one embodiment, the second diode system is a Schottky diode.

In one embodiment, the uninterruptible power converter further has an external diode having an anode coupled to an external power pack and a cathode system and the input of the DC/DC converter The end is coupled.

In one embodiment, the external power supply unit is a solar module.

In order to achieve the above object, the present invention further provides an uninterruptible power converter for supplying power to a small electronic device, and having:

An AC/DC converter for providing a first DC voltage;

a first Schottky diode having a first anode and a first cathode, wherein the first anode is coupled to the first power source;

a battery pack for providing a second DC voltage;

a second Schottky diode having a second anode and a second cathode, wherein the second anode is coupled to the second power pack;

A DC/DC converter having an input end and an output end, wherein the input end is coupled to the first cathode and the second cathode, respectively, and the output end is configured to provide a DC output voltage to the Small electronic device as described.

The detailed description of the drawings and the preferred embodiments are set forth in the accompanying drawings.

Please refer to FIG. 2, which is a block diagram of a preferred embodiment of an uninterruptible power converter of the present invention. As shown in FIG. 2, an uninterruptible power converter 200 is used to supply power to a load 208, and the uninterruptible power converter 200 has a first power pack 201, a first diode 202, and a first The second power supply unit 203, the second power diode 204, the third power source group 205, the third diode 206, a DC/DC converter 207, and an external diode 209.

The first power group 201 is configured to provide a first DC voltage, such as but not limited to an AC/DC converter, to convert an AC power source (eg, 110V AC power) into the first DC voltage.

The first diode 202 has a first anode and a first cathode, wherein the first anode is coupled to the first power pack 201. In addition, the first diode 202 is preferably a Schottky diode because the Schottky diode has a fast conducting electrical characteristic and its forward bias is reduced to the bias of the general diode. Pressure drop.

The second power supply group 203 is configured to provide a second DC voltage, such as, but not limited to, a battery pack. The battery pack may include a primary battery or a secondary battery or a combination of both. The primary battery may be, for example but not limited to, an alkaline battery, and the secondary battery may be, for example but not limited to, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, or a lithium battery, and the battery pack may further include a charging circuit. Charge the secondary battery contained therein.

The second diode 204, preferably a Schottky diode, has a second anode and a second cathode, wherein the second anode is coupled to the second power pack 203.

The third power supply group 205 is configured to provide a third DC voltage, such as, but not limited to, a battery pack. The battery pack may include a primary battery or a secondary battery or a combination of both. The primary battery may be, for example but not limited to, an alkaline battery, and the secondary battery may be, for example but not limited to, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, or a lithium battery, and the battery pack may further include a charging circuit. Charge the secondary battery contained therein.

The third diode 206, preferably a Schottky diode, has a third anode and a third cathode, wherein the third anode is coupled to the third power pack 205.

The DC/DC converter 207 has an input end and an output end coupled to the first cathode, the second cathode, and the third cathode, respectively, and the output end is used to provide a direct current Output voltage V _OUT . Since the general DC/DC converter can provide a stable DC output voltage when there is a large change in its input voltage, the DC/DC converter 207 can be in the first power group 201 and the second power group. 203. Or the third power supply group 205 can stably provide the DC output voltage V _OUT when an abnormal condition occurs.

The load 208 is a small electronic device such as, but not limited to, a wireless sharer, a monitor, or a telephone host, and the like.

The external diode 209, preferably a Schottky diode, has an anode coupled to an external power pack 210, and a cathode coupled to the input of the DC/DC converter 207. .

The external power supply unit 210 is configured to provide a fourth DC voltage, such as, but not limited to, a solar module.

In operation, the highest one of the first direct current voltage, the second direct current voltage, the third direct current voltage, and the fourth direct current voltage (for example, the first direct current voltage) causes a diode corresponding thereto ( In this example, the first diode 202 is turned on to provide the input power required by the DC/DC converter 207. The other diodes (in this case, the second diode 204 and the third diode 206) are turned off due to the reverse bias. In this example, when the first DC voltage suddenly drops due to an abnormality in the first power group 201, the highest one of the second DC voltage and the third DC voltage causes a corresponding pole The body is turned on to replace the input power required to provide the DC/DC converter 207. Since the on-time of the diode is extremely short, and the DC/DC converter 207 can allow a large variation range of the input voltage, the uninterruptible power converter 200 can stably provide the DC output voltage V. _OUT , even if the first power pack 201 is abnormal.

In addition, in the inconvenient supply of the mains (for example, in a remote highway or a mountain), the external power supply unit 210 is externally connected by the external diode 209, and the uninterruptible power converter 200 can also provide electric energy for a long time. . For example, when the external power group 210 is a solar module, the external power group 210 can supply power to the battery 208 in the daytime, and can also charge the batteries of other power groups to make other power groups. Can take over the power supply at night.

Please refer to FIG. 3 , which is a schematic diagram of the appearance of an embodiment of an uninterruptible power converter according to the present invention. As shown in FIG. 3, an uninterruptible power converter 300 has a plug 301, a battery 302, and a DC output connector 303.

The plug 301 is configured to connect an AC power source to an AC/DC converter in the uninterruptible power converter 300 to provide the AC/DC converter with a first DC voltage.

The battery 302 is for providing a second DC voltage.

The DC output connector 303 is configured to provide a DC output voltage, wherein the DC output voltage is from a higher one of the first DC voltage and the second DC voltage.

When a power outage occurs, the first diode, a second diode, and a DC/DC converter (which are described in FIG. 2) are included in the uninterruptible power converter 300. The battery 302 is used as a power source and provides a stable DC output voltage via the DC output connector 303.

Please refer to FIG. 4 and FIG. 5 for the application of the uninterruptible power converter 300. As shown in FIG. 4, the plug of the uninterruptible power converter 300 is connected to an AC outlet, and its DC output connector 303 (not shown) is connected to a wireless sharer 400. As shown in FIG. 5, the plug of the uninterruptible power converter 300 is connected to an AC outlet, and its DC output connector 303 (not shown) is connected to a network camera 500. When a power outage condition occurs, the wireless sharer 400 and the network camera 500 can still obtain stable DC power from the uninterruptible power converter 300 to continue normal operation.

6a and 6b are schematic views showing the appearance of another embodiment of the uninterruptible power converter of the present invention. As shown in FIGS. 6a and 6b, an uninterruptible power converter 600 has an AC outlet 601, two batteries 602, a DC output connector 603, and an external power connector 604.

The AC outlet 601 is configured to connect an AC power source to an AC/DC converter in the AC power converter 600 to provide the AC/DC converter with a first DC voltage.

The battery 602 is configured to provide a second DC voltage.

The DC output connector 603 is for providing a DC output voltage.

The external power connector 604 is for connecting an external power source.

Please refer to FIG. 7 and FIG. 8 for the application of the uninterruptible power converter 600. As shown in FIG. 7, the uninterruptible power converter 600 is connected between an AC outlet and a wireless sharer 400 to provide an uninterruptible power supply to the wireless sharer 400. As shown in FIG. 8, the uninterruptible power converter 600 is connected between a solar module 700 and a network camera 500 to provide an uninterruptible power supply to the network camera 500.

As can be seen from the above description, the present invention has the following advantages due to its novel design:

1. The uninterruptible power converter of the present invention provides a stable DC power supply to a small electronic device.

2. The uninterruptible power converter of the present invention can provide the function of automatically switching the power supply by using at least two diodes.

3. The uninterruptible power converter of the present invention can provide a stable DC power source by placing a DC/DC converter at the output of the uninterruptible power converter.

4. The uninterruptible power converter of the present invention can be formed into a compact structure by being combined with a plug for convenient storage by a user.

5. The uninterruptible power converter of the present invention can be connected to an external power source to supply a load for a long period of time where the utility power cannot be provided.

The disclosure of the present invention is a preferred embodiment. Any change or modification of the present invention originating from the technical idea of the present invention and being easily inferred by those skilled in the art will not deviate from the scope of patent rights of the present invention.

In summary, this case, regardless of its purpose, means and efficacy, is showing its technical characteristics that are different from the conventional ones, and its first invention is practical and practical, and it is also in compliance with the patent requirements of the invention. I will be granted a patent at an early date.

100. . . Uninterruptible power supply unit

101. . . AC/DC converter

102, 207. . . DC/DC converter

103, 302, 602. . . battery

104. . . switch

105, 208. . . load

200, 300, 600. . . Uninterruptible power converter

201. . . First power pack

202. . . First diode

203. . . Second power pack

204. . . Second diode

205. . . Third power pack

206. . . Third diode

209. . . External diode

210. . . External power pack

301. . . plug

303, 603. . . DC output connector

400. . . Wireless sharer

500. . . Webcam

601. . . AC outlet

604. . . External power connector

FIG. 1 is a block diagram showing a conventional power supply device for supplying power to a load.

2 is a block diagram of a preferred embodiment of an uninterruptible power converter of the present invention.

3 is a schematic diagram of the appearance of an embodiment of an uninterruptible power converter according to the present invention.

4 is a schematic diagram of one application of the uninterruptible power converter shown in FIG.

FIG. 5 is a schematic diagram of another application of the uninterruptible power converter shown in FIG.

6a and 6b are schematic views showing the appearance of another embodiment of the uninterruptible power converter of the present invention.

Figure 7 is a schematic diagram of one of the applications of the uninterruptible power converter shown in Figures 6a and 6b.

Figure 8 is a schematic diagram of another application of the uninterruptible power converter shown in Figures 6a and 6b.

200. . . Uninterruptible power converter

201. . . First power pack

202. . . First diode

203. . . Second power pack

204. . . Second diode

205. . . Third power pack

206. . . Third diode

207. . . DC/DC converter

208. . . load

209. . . External diode

210. . . External power pack

Claims (10)

An uninterruptible power converter having:
a first power supply group for providing a first DC voltage;
a first diode having a first anode and a first cathode, wherein the first anode is coupled to the first power source;
a second power supply group for providing a second DC voltage;
a second diode having a second anode and a second cathode, wherein the second anode is coupled to the second power pack; and a DC/DC converter having an input and an output The input end is coupled to the first cathode and the second cathode, respectively, and the output end is configured to provide a DC output voltage. The uninterruptible power converter of claim 1, wherein the first power pack has an AC/DC converter. The uninterruptible power converter of claim 1, wherein the first diode system is a Schottky diode and the second diode system is a Schottky diode. The uninterruptible power converter of claim 1, wherein the second power pack has a battery pack. An uninterruptible power converter as described in claim 4, wherein the battery pack is constituted by a battery selected from the group consisting of a primary battery, a secondary battery, and any combination thereof. The uninterruptible power converter according to claim 5, wherein the primary battery is an alkaline battery, and the secondary battery is a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, and A battery selected by a battery group consisting of lithium batteries. The uninterruptible power converter of claim 5, wherein the battery pack further has a charging circuit. The uninterruptible power converter of claim 1, further comprising an external diode having an anode coupled to an external power pack, and a cathode and the DC/DC converter The input ends are coupled. The uninterruptible power converter of claim 8, wherein the external two-pole system is a Schottky diode and the external power source is a solar module. An uninterruptible power converter for supplying power to a small electronic device, the continual power converter having:
An AC/DC converter for providing a first DC voltage;
a first Schottky diode having a first anode and a first cathode, wherein the first anode is coupled to the AC/DC converter;
a battery pack for providing a second DC voltage;
a second Schottky diode having a second anode and a second cathode, wherein the second anode is coupled to the battery;
An external Schottky diode having a third anode and a third cathode, wherein the third anode is coupled to an external power pack; and a DC/DC converter having an input and An output terminal, wherein the input end is coupled to the first cathode, the second cathode, and the third cathode, respectively, and the output end is configured to provide a DC output voltage to the small electronic device.