JPS62138028A - Source apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a power supply device that converts alternating current power into direct current to supply load power, and particularly relates to a power supply device in which the load power supply system is completely cut off from an alternating current power source. It is related to.

[Prior Art] Commercial AC power supplies are rarely lost, but so-called instantaneous power outages occur when switching power transmission systems during lightning strikes, and the contents of the memory of electronic devices such as computers may be initialized or lost. Trouble may occur, such as the program running out of control and acting abnormally.

In order to prevent such troubles caused by instantaneous power outages, a backup power source that operates during power outages is required. Conventionally, a storage battery is always connected to the output terminal of a charger that rectifies AC power; A system that supplies power from the output end and supplies power from a storage battery in the event of an AC power outage, or a switch that detects a power outage and activates it so that the storage battery is connected to the load power supply system and power is supplied from the storage battery only during a power outage. What has been done is known.

[Problems to be Solved by the Invention] The above-mentioned conventional power supply devices normally feed rectified DC power from an AC power source directly to the load power supply system, so they are free from noise and other noise that enters from the power transmission system. The impact also affected the load power supply system, causing accidents such as computer programs going out of control and operating abnormally.

The present invention eliminates such drawbacks of the conventional technology, prevents troubles caused by instantaneous power outages when using electronic equipment such as computers, and provides a power supply that does not affect the equipment from noise coming from the power transmission system. The purpose is to provide equipment.

[Means for Solving the Problems] The power supply device of the present invention for achieving the above object will be explained based on FIG. 1 corresponding to the embodiment. A power supply l is provided separately from the load power supply system 6, and power is supplied to the load power supply system 6 from a plurality of storage batteries 7, which are provided separately from each other, and the connection switching means 5 switches the load power supply to the load power supply system 6. The system 6 includes at least one of the plurality of storage batteries 7...
The storage batteries that are not connected to the load power supply system 6 are sequentially connected to the charging power source 1 so that they are always connected.

[The active load power supply system 6 is disconnected from the charging power source 1 and at least one of the plurality of batteries 7 is connected via the connection switching means 5.
On the other hand, the charging power source 1 charges the storage battery 7 which is not connected to the load power supply system 6 via the connection/off switching means 5. The storage battery 7 to be charged or supplied with power is sequentially switched by the connection switching means 5, and the charging power source 1 and the load power supply system 6 are always electrically disconnected and connected.

[Example] A first example of the present invention will be described based on FIGS. 1 to 3.

FIG. 1 is a circuit configuration diagram, in which a charging power source 1 is made up of, for example, a known transformer 2 and a rectifier circuit 3, its input end is connected to a commercial AC power source 4, and its output end is connected to a connection switching means 5. The charging power source 1 and the load power supply system 6 are electrically separated from each other. 6a is a load.

7... is a plurality of storage batteries, and these storage batteries 7...
are provided electrically separated from each other, and each terminal 7a... is connected to the connection switching means 5 in parallel.

FIG. 2 is a schematic diagram of the connection switching means 5, and FIG. 3 is a partially exploded perspective view of the connection switching means 5. The terminals 7a of the storage battery... are connected to contacts 9 exposed at equal intervals on the inner circumferential surface of the
Inside the fixed ring 8, a charging side contact lO and a power feeding side contact 11, each formed in an arc shape, are always in contact with a plurality of contacts 9 so as not to contact the same contact 9. They are integrally rotatably provided with a gap 12.12 between them. Reference numeral 13 indicates a shaft provided integrally with both contact pieces 10 and 11, and a charging power source l is supplied to the charging side contact lO through contacts 14 and 15 attached to both sides of this shaft 13. The load power supply system 6 is always connected to the side contact piece 11. Reference numeral 16 denotes a motor connected to the shaft 13, which is driven by the output of the transformer 17 by stepping down the AC power source 4 through a transformer 17, and connects the charging side contact piece 10 and the power feeding side contact piece 11 to the contact point 9. Rotate integrally while making contact with ....

Next, to explain the operation of this embodiment, the power supplied from the AC Ft power source 4 is stepped down by the transformer 2 of the charging power source 1, then rectified into direct current by the rectifier circuit 3, and output to the connection switching means 5. Ru. In the connection switching means 5, the output from the charging power source l is connected to the charging side contact lO via the charging side contact 14.
The storage battery 7... connected to the contact 9... that is in contact with the
, and charges these storage batteries 7 to a specified voltage.

On the other hand, DC power is supplied to the load power supply system 6 via the power supply side contactor 15 from the storage battery 7 connected to the contact 9 which is in contact with the power supply side contact piece 11, and the charging side Since the contact piece 10 and the power supply side contact piece 11 are rotated integrally by the motor 16, the contact points 9... that each contact piece to, tt contact are sequentially switched, and the storage battery is charged or supplied with power accordingly. 7... are switched sequentially. Moreover, the charging side contact piece 10 and the power feeding side contact piece 11 are provided so as not to contact the same contact point 9, and the charging power source 1 and the load power feeding system 6
is constantly being electrically cut and cultivated.

In this way, in the unembodied power supply device, the load power supply system 6 is disconnected from the charging power source 1 and receives power from the storage batteries 7..., and the storage batteries 7... that are not feeding power to the load power supply system 6 are charged. It is charged by the output from power supply 1, and
The storage batteries 7 to be charged or supplied with power are sequentially switched, and each storage battery 7 is repeatedly charged and supplied with power.

In the above embodiment, a large number of storage batteries 7 are provided, and the load power supply system 6
Although a plurality of storage batteries 7 are connected to the load power supply system 6 at the same time, a minimum of two storage batteries 7 is sufficient, and it is sufficient that at least one of the storage batteries 7 is always connected to the load power supply system 6.

FIG. 4 shows a second embodiment of the present invention, in which connection switching means 5
0 is different from the first embodiment, only the connection switching means 50 will be explained.

The terminals 7a of each storage battery 7 are connected between two thyristors 51 and 52 connected in series, and the input terminal of the thyristor 51 is connected to the charging power source 1 through a filter 53. is connected, and the other thyristor 5
The output terminal of No. 2 is connected to the load power supply line 6 via a filter 54.

On the other hand, a signal generator 55 including a known counter and a decoder includes a known oscillator 56 that oscillates a predetermined pulse signal.
The output from the plurality of flip-flops 57 and
... are connected to sequentially output switching signals.

The output terminals of these flip-flops 57 are connected to the gates of the thyristors 51 and 52.

Next, the operation of the connection switching means 50 will be explained. Thyristors 51 and 52 are operated so that one of them is in a conductive state and the other is in a cut-off state by an output signal from a flip-flop 57 connected to its gate. . Therefore, when 51 is in a conductive state, the storage battery 7 connected thereto is connected to the charging power supply ■, but is disconnected from the load power supply system 6, and conversely, 52 is in a conductive state. If so, the storage battery 7 connected thereto is connected to the load power supply system 6 while being disconnected from the charging power source 1.

The signal generating section 55 that receives the pulse signal from the oscillator 56 counts the number of pulses with a counter and sequentially outputs a switching signal from the decoder to the flip-flop 57 every predetermined number of pulses. A storage battery 7 is connected to the load power supply system. In this embodiment as well, a minimum of two storage batteries 7 is sufficient. Further, transistors may be used in place of the thyristors 51 and 52.

As explained above, the connection switching means in the present invention may be one that switches mechanically as in the first embodiment, or electrically as in the second embodiment, or may switch electrically as in the second embodiment. Alternatively, it may be switched by a relay switch, for example. Furthermore, although DC power is supplied to the load in each of the above embodiments, an inverter or the like may be inserted to supply AC power to the load.

[Effects of the Invention] According to the power supply device of the present invention, the load power supply system has at least
・Storage batteries that are constantly supplied with power from one storage battery and are not being supplied with power to the load power supply system are charged by the output from the charging power supply, and since the storage battery that is being charged or supplied with power is sequentially switched, the battery is input to the charging power supply. Even if a momentary power outage occurs in the AC ili source, normal power supply is maintained without any effect on the load power supply system. Furthermore, since the load power supply system is always disconnected from the charging power supply, even if noise enters from the AC power supply transmission system, it will not affect the load power supply system in any way, and normal power supply will always be maintained. No problems will occur with computers or other electronic devices connected to the computer.

Furthermore, if the capacity of the storage battery is increased to a certain extent, it can also be used as a so-called uninterruptible power supply bag that can continue normal power supply even during a long power outage.

[Brief explanation of drawings]

FIG. 1 is a circuit configuration diagram of a first embodiment of the present invention. FIG. 2 is a schematic plan view of the connection switching means of the embodiment, and FIG.
The figure is a partially exploded perspective view of the connection switching means, and FIG. 4 is a circuit configuration diagram of a second embodiment of the present invention.

Claims (1)

[Claims] A charging power supply that is provided separately from the load power supply system and rectifies AC input into DC and outputs the same, a plurality of storage batteries that are provided separately from each other and supplies power to the load power supply system, and at least one of the plurality of storage batteries that is provided in the load power supply system. 1. A power supply device comprising connection switching means for sequentially connecting storage batteries that are not connected to a load power supply system to the charging power source, and for sequentially connecting storage batteries that are not connected to a load power supply system so that one battery is always connected.