CN2143843Y - Automatic charger - Google Patents

Abstract

The utility model relates to an automatic charger that belongs to the technical field of electronics. An accumulator Vc outputs direct current voltage that is compared with a set magnitude of voltage, and deviation signals are obtained through an electrical bridge, while an amplifying circuit amplifies the deviation signals. A switching circuit of two position control is applied to execute deviation signals and control a relay to work or not, and the relay controls the accumulator to be charged or not. The automatic charger can keep a standby power under a set voltage frequently without manual control of charge.

Description

Automatic charger

The utility model belongs to electronic technology field, relates to a kind of automatic electrical energy storage device.

General using electricity system, particularly weak electricity system are if want to remain uninterrupted electricity consumption, except that normal mains supply, also dispose storage battery as stand-by power supply, storage battery does not enter operating state generally speaking, only when grid power blackout, storage battery is just to using electricity system output electric energy, and no matter whether storage battery use, and all should regularly charge, also then, storage battery is discharge automatically, can't power to using electricity system.

The purpose of this utility model provides a kind of device that just charges automatically according to battery tension.

The utility model know-why is as follows:

By storage battery V _CWhether output dc voltage and setting voltage value relatively obtain deviation signal by electric bridge, through amplifying circuit deviation signal are amplified, and by work by-pass cock circuit, carry out deviation signal, and whether control relay moves, charged by relay control storage battery.

Power supply U is by fuse B _X, transformer BV, rectification Z _aWith storage battery V _CConnect, at transformer BV ₂With connect storage battery V between the power supply U by relay CJ contact _COutput connects amplifying circuit Fd Ausgang with amplifying circuit Fd _SCWith two regulating circuit T _jInput t _SrConnect relay J ₁Contact 1 connects with relay CJ coil, and the relay CJ coil other end connects relay J with power supply U jointly with the JC coil other end ₁Contact 3 connects with power supply U jointly with relay J C coil one end, Fd resistance R in the indication amplifying circuit ₁-R ₉, R ₁₇, R _LThe series-parallel connection bridge circuit of forming is by integrated operational amplifier J _C1, resistance R ₁₀-R ₁₃, capacitor C ₂-C ₆, diode D ₉, D ₁₀Connect and form amplifier, obtain deviation signal, input integrated operational amplifier J from the output of series-parallel connection bridge circuit _C1, amplified deviation signal, on the one hand by ammeter A indication, control switch circuit on the one hand is by diode D ₁-D ₄, D ₁₃Resistance R ₁₄, capacitor C ₇Form bridge-type RC source of stable pressure, to amplifying circuit Fd power supply, by diode D ₅-D ₈, D ₁₁, D ₁₂, capacitor C ₈-C ₁₁, resistance R ₁₅, R ₁₆Form bridge-type two-way full-wave rectification voltage stabilizing RC circuit, to two by-pass cock circuit T _jThe prime power supply.Two by-pass cock circuit T _jFront stage circuits is by integrated operational amplifier J _C2, resistance R ₂₁-R ₂₆, capacitor C ₁₂-C ₁₄, C ₁₆, C ₁₇Form, carry out deviation signal, regulating relay action, triode BC ₁, diode D ₁₄-D ₁₆, D ₁₈, resistance R ₁₉, R ₂₀, capacitor C ₁₅Relay J ₁Form two by-pass cock circuit T _jBack level switching circuit is by prime J _C2Amplification deviation signal when regulating controlled parameter, when controlled parameter is lower than setup parameter, triode BC ₁Conducting, relay J ₁Adhesive, contact 1,3 conductings, contactor coil CJ adhesive, CJ ₁, CJ ₂Conducting.Making controlled plant is storage battery V _CCharging is as storage battery V _CBe recharged when meeting or exceeding setup parameter (rated voltage) triode BC ₁End, relay discharges, and makes controlled plant stop charging, repeats above-mentioned situation, has played automatic charging effect, if AC network has a power failure suddenly, JC discharges, J _CA, J _CBConducting is by the automatic powering load of storage battery.

The utility model advantage is: stand-by power supply (storage battery) is often remained on not to be needed under the setting voltage manually to control charging, and usage range is wide.

Fig. 1 is the automatic charger schematic circuit;

Fig. 2 is indication amplification path figure;

Fig. 3 is two by-pass cock circuit diagrams.

Wherein: V _CBe storage battery, Z _aBe rectifier bridge, BV ₁, BV ₂Be transformer, Fd is the indication amplifying circuit, T _jBe two by-pass cock circuit, B _XBe fuse, CJ, JC, J ₁Be relay, R is a resistance, and C is an electric capacity, and D is a diode, J _C1, J _C2Be operational amplifier, J _C1Model SF ₇₀₉A, J _C2Model FC ₃A.

Claims (1)

1, a kind of automatic charger is by fuse B _x, transformer BV, rectifier bridge Z _aStorage battery V _cForm, it is characterized in that: storage battery V _cOutput and amplifying circuit F _dConnect amplifying circuit F _dAusgang _ScWith two regulating circuit T _jInput t _SrConnect relay J ₁Contact 1 connects with relay CJ coil, and the relay CJ coil other end adds an end with the JC coil and connects with power supply U jointly, and relay J contact 3 connects with power supply U jointly with relay J C coil one end; At indication amplifying circuit F _dIn, resistance R ₁-R ₉, R ₁₇, R _LForm the series-parallel connection bridge circuit, by integrated operational amplifier J _C1, resistance R ₁₀-R ₁₃, capacitor C ₂-C ₆, diode D ₉, D ₁₀Connect and form amplifier, two by-pass cock circuit T _jFront stage circuits is by integrated operational amplifier J _C2, resistance R ₂₁-R ₂₆, capacitor C ₁₂-C ₁₄, C ₁₆, C ₁₇Form triode BC ₁, diode D ₁₄-D ₁₆, D ₁₈, resistance R ₁₉, R ₂₀, capacitor C ₁₅, relay J ₁Form T _jBack level switching circuit.

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