JPH06217467A - Emergency power supply - Google Patents

Abstract

PURPOSE:To obtain a simple power supply which can feed power automatically to an information transmission machine at the time of emergency by charging an emergency battery constantly with power obtained from natural energy and switching a load instantaneously to the emergency battery through a switching means upon power interruption due to fault on the system. CONSTITUTION:A switch 13 is normally connected between first input terminal (a) and an output terminal (c) and a breaker 15 is normally turned ON. Consequently, a small capacity load 16 and a large capacity load 14 are fed with power from a system A-A'. On the other hand, power generated from solar cells 12-1 and wind power generators 12-2 is fed through a charge control circuit 19 to an emergency battery 11 which is thereby constantly charged. When power supply from the system A-A' is interrupted, the switch 13 is turned to connect a second input terminal (b) with the output terminal (c) and the breaker 15 is turned OFF. Consequently, power having same voltage and frequency as commercial power supply is fed instantaneously to the small capacity load 16 from the emergency battery 11 through an inverter 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency power supply device used for securing only a communication system in an emergency at home or office.

[0002]

2. Description of the Related Art Generally, as an emergency power source, an automatically activated engine generator and a battery that fills a gap before starting and is constantly charged from a main system power source in a floating state have been used.

[0003]

The provision of the above-described conventional device having a generator and battery in a general home or small office has problems in terms of maintenance cost, fuel storage, space and the like. Currently, information transmission devices such as word processors, fax machines, and microcomputers are used, and there is a demand for a simple power source that can automatically supply power to these devices in an emergency.

[0004]

The present invention takes the following means in order to solve the above problems.

That is, the emergency power supply device has a first input terminal, a second input terminal and an output terminal, the first input terminal is connected to a system, the output terminal is connected to a load, and the first input terminal is normally used. Side, and a switching means connected to the second input terminal side when there is a power failure, and an emergency battery connected to the second input terminal of the switching means,
A power generating means connected to the emergency battery to obtain electric power from natural energy is provided.

[0006]

In the above means, the load is normally connected to the system via the first input terminal of the switching means and is operated by receiving electric power.

In the event of a system power failure, the switching means is switched, and the load is immediately supplied with power from the emergency battery via the second input terminal of the switching means.

On the other hand, the emergency battery is always charged by a power generation means that obtains electric power from a natural energy source such as sunlight or wind power.

In this way, it is possible to obtain an emergency power generator having a simple structure and which operates instantly during a power failure.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. In FIG. 1, the A line of the commercial power system AA ′ is connected to the input terminal a of the changeover switch 13. The output terminal c of the changeover switch 13 is connected to the B line of the load.

A plurality of small capacity loads 16, a breaker 15 and a large capacity load 14 are connected between the B line and the B'line of the load. Further, the B'line is connected to the A'line of the system. Here, the small capacity load 16 is an information device such as a fax machine or a personal computer.

One end of the emergency battery 11 is connected to the A'line, and the other end is connected to the second input terminal of the changeover switch 13 via the inverter 18. One end of the solar cell 12-1 and the wind power generator 12-2 is connected to the A'line, and the other end is connected to the other end of the emergency battery 11 via the charge control circuit 19.

In the above, the changeover switch 13 is usually used.
Is connected between the first input terminal a and the output terminal c. The breaker 15 is also ON. Therefore, small capacity load 1
6 and the large-capacity load 14 receive power from the grid A-A '.

On the other hand, the solar cell 12-1 and the wind power generator 12
The power generated by -2 is sent to the emergency battery 11 via the charge control circuit 19, and the battery 11 is always optimally charged.

When the system A-A 'fails, the changeover switch 13 is switched to connect the second input terminal b and the output terminal c. Also, the breaker 15 is turned off. Then, the power having the same voltage and frequency as the commercial power source is instantaneously supplied to the small capacity load 16 from the emergency battery 11 via the inverter 18.

Therefore, the small capacity load 16 can always be safely supplied with electric power and can continue to operate.

The circuit and operation of the changeover switch 13 and the breaker 15 which are switched at the time of power failure will be described with reference to FIG.
The electromagnet 21 is connected between the line connecting the input terminal C ′ and the output terminal D ′ and the output terminal D. A movable iron piece 22 having a contact 25 is arranged near the pole of the electromagnet 21. Contact 2
5, an a-contact contact 23 is arranged on the electromagnet 21 side, and a b-contact contact 24 is arranged on the opposite side. One terminal of the button switch 27 is connected to the terminal C via the contact 23. The other terminal is connected to the D terminal via the movable piece 22. 26 in the figure
Is a spring for returning the movable piece 22.

As described above, when the power source is connected between the terminals C and C ', when the self-reset type button switch 27 is pushed for a moment, both terminals are turned on and the electromagnet 21 is excited to move the movable piece 22. Is sucked. Then, the contacts 23 and 25 come into contact with each other, the electromagnet 21 is excited, and the contact 25 is held by itself. Therefore, the terminals C and D are turned on.

When the power is turned off, the electromagnet 21 is turned off.
Then, the movable piece 22 is returned by the spring 26, and the contact points 25,
Between 24 turns on. In this state, the changeover switch 13 is in a state of being switched to the second input terminal side, and the breaker 15 is in an off state.

As described above, when the power receiving system A-A 'has a power failure due to an accident or the like, the power of the small-capacity load 16 which is automatically determined in advance is previously charged by the natural energy source to the emergency battery 11 Switch to. Therefore, the configuration is simple without the need for an emergency generator.

Further, since the emergency battery 11 is charged by the composite natural energy of two or more inputs, it is possible to secure the minimum power source with a small capacity load even if the accident recovery time is long.

[0022]

As described above, according to the present invention, the emergency battery is always charged with the electric power from the natural energy. When the system loses power due to an accident, the load is instantly connected to the emergency battery by the switching means without power failure. Therefore, if the load is selected for the information device or the like, high reliability can be obtained with a simple configuration.

[Brief description of drawings]

FIG. 1 is a configuration circuit diagram of an embodiment of the present invention.

FIG. 2 is a circuit diagram of a changeover switch and a breaker of the same embodiment.

[Explanation of symbols]

 11 Emergency Battery 12-1 Solar Cell 12-2 Wind Power Generator 13 Changeover Switch 14, 16 Load 18 Inverter 19 Charge Control Circuit

Claims (1)

[Claims] 1. A power failure, which has a first input terminal, a second input terminal and an output terminal, wherein the first input terminal is connected to a system and the output terminal is connected to a load and is normally connected to the first input terminal side. Comprises switching means connected to the second input terminal side, an emergency battery connected to the second input terminal of the switching means, and power generation means connected to the emergency battery to obtain electric power from natural energy. A featured emergency power supply.