CN2166555Y

CN2166555Y - High-voltage direct & inverse transformation emergency power

Info

Publication number: CN2166555Y
Application number: CN 92246143
Authority: CN
Inventors: 皇甫斌
Original assignee: BIDACHENG INVESTMENT Co Ltd
Current assignee: BIDACHENG INVESTMENT Co Ltd
Priority date: 1992-12-31
Filing date: 1992-12-31
Publication date: 1994-05-25
Anticipated expiration: 2002-12-31

Abstract

Disclosed is a high-voltage direct and inverse transformation emergency power supply, which is a voltage stabilizing inverter power supply, composed of an automatic charge circuit 101, a charge testing circuit 102, an accumulator 2, an oscillation circuit 3 and an output switch circuit 4. The accumulator is combined by connection in series; the voltage of the accumulator equals to the voltage of main power; at the time of charge, the main power can be directly added on a battery pack for charge by rectification; at the time of discharge, high-voltage direct current is converted to alternating current to be output by the oscillation circuit and the output switch circuit. A transformer is omitted in the whole power supply; therefore, the power supply of the utility model has small size light weight and low cost.

Description

High-voltage direct & inverse transformation emergency power

The present invention relates to a kind of voltage stabilizing inverter.

Current inverter on the market all is civil power (220V or 110V), through transformer step-down accumulators (the normally lead acid accumulator of 12V or 24V) again, the charging storing energy converts square wave or sine wave to through oscillating circuit when having a power failure, again through the transformer supply load that boosts.As accompanying drawing 5 are block diagrams of conventional inverter, and such circuit has following shortcoming: 1, and lossy on the transformer; 2, the transformer heaviness makes produced inverter volume big, Heavy Weight, and structural manufacturing process is complicated, the cost height.

The purpose of this invention is to provide a kind of high-voltage direct-charged and dc-ac converting emergency power supply, it be by high-tension electricity (220V or 110V) directly to charge in batteries, and when discharge directly export high pressure, save transformer, reduce the loss of circuit, more reduce the volume and weight of inverter, reduce manufacturing cost.

Principle of the present invention is such, it is made up of charging testing circuit, storage battery, oscillating circuit and output switch circuit, the batteries that it uses tandem compound makes the combination voltage of storage battery identical with line voltage, can utilize civil power directly to charge in batteries (need not transformation) like this; Also can directly can power during discharge, save transformer through ac converter.

Advantage of the present invention is: volume is little, and is in light weight, and cost is low.

Further specify performance of the present invention below by accompanying drawing:

Fig. 1 is a block diagram of the present invention;

Fig. 2 is the testing circuit that charges automatically;

Fig. 3 is 50 a cycles numeral oscillating circuit;

Fig. 4 is an output switch bridge circuit.

Fig. 5 is the block diagram of conventional inverter.

Among Fig. 1, automatic charger 101, testing circuit 102, storage battery 2,50 cycle oscillating circuits 3, output bridge switch 4.In order to reduce transformer, and make up a high tension battery group 2 identical with line voltage, little in order to realize volume, in light weight, can select chargeable cadmium nickel or ni-mh sealed cell tandem compound.As select for use 0.5 ampere-hour, 180 inverters that are composed in series as 500W of the column sealed storage battery of No. 5 cadmium nickel of 1.2 volts of rated voltages, its weight be 4 kilograms multiple, the inverter of conventional 500W is then wanted more than 20 kilogram.When being composed in series storage battery, when being composed in series storage battery, drawing tap and use for other low circuits at ± 12V Fu Chu.Its course of work is such: when civil power has electricity, by testing circuit 102, measure storage battery and control charging circuit 101 work, be charge in batteries, when mains failure, the high voltage direct current of storage battery output is added on the output bridge switch 4, and output bridge switch 4 is exported the square wave of 50 cycles by 3 controls of 50 cycle oscillating circuits to load.

Further specify the working condition of other circuit below again.

Fig. 2 is the testing circuit that charges automatically, after switch G6 directly is added on the storage battery, controlled by the testing circuit that IC4 forms by the break-make of switch G6 through rectification B2 for civil power, and testing circuit measures the voltage of storage battery and controls the G6 break-make.There are two benefits on such charging road: 1, utilize the sinusoidal voltage charging after the full-wave rectification, and promptly utilized the peak value charging of voltage, can shorten the charging interval like this; 2, storage battery has directly absorbed the surge of civil power.

Fig. 3 is an oscillating circuit, and its produces the oscillation level in one 50 week, and makes A, B level identical, and C, D level are identical, during A, B output high level, and C, D output low level; During C, D output high level, A, B output low level; A, B or C, D high-low level once are a week.

Fig. 4 is the switch bridge circuit, and when oscillating circuit A, B output high level, switch G1, G4 conducting produce positive half cycle voltage on load RL; When oscillating circuit C, D output during high level, G2, G3 conducting produce negative half period voltage on load RL, so repeat and produce alternating current supply load RL.

Claims

1, a kind of high-voltage direct-charged and dc-ac converting emergency power supply, it is made up of charging testing circuit, storage battery, oscillating circuit and output switch circuit, it is characterized in that: storage battery is the voltage assembled battery identical with line voltage, its input and on the mains-supplied line of rectification, charging circuit is as its input switch, and the output of battery is exported through bridge switch.

2, high-voltage direct-charged and dc-ac converting emergency power supply according to claim 1, it is characterized in that: storage battery makes up with series system, and draws tap at ± 12 Fu Chu.

3, high-voltage direct-charged and dc-ac converting emergency power supply according to claim 1 is characterized in that: storage battery adopts cadmium nickel or ni-mh sealed cell.