CN2285532Y

CN2285532Y - High-effect microflow self-control electricity charger

Info

Publication number: CN2285532Y
Application number: CN 96227584
Authority: CN
Inventors: 于正华; 孙景坤
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-04-02
Filing date: 1996-04-02
Publication date: 1998-07-01
Anticipated expiration: 2006-04-02

Abstract

The utility model relates to a micro-flow automatic control charger for batteries, which belongs to a power supply device. The utility model mainly comprises a containing current and constant current source circuit and a pulse forming circuit, wherein, the containing current and constant current source circuit is composed of two groups of non-polarity capacitors and a rectifying circuit, and the pulse forming circuit is a bidirectional thyristor circuit controlled by a resistor diversion circuit. The utility model has the advantages of simple structure, small volume, portability, constant charging electric current and less power consumption, the utility model is not limited by the volumetric capacity and can simultaneously charge a plurality of groups of accumulators, when load short circuit happens, the utility model can perform the functions of capacity expansion and protection towards the electric network.

Description

Efficient miniflow automatic control charger

The utility model relates to a kind of circuit arrangement for powering, especially a kind of miniflow automatic control charging device to storage battery.

The storage battery that various motor vehicles, machinery equipment are used in use needs frequent maintenance, boost charge, and existing charger and charger have the voltage regulating transformer formula, adjustable thyristor type power supply architecture and pulse output charger, transformer pressure-adjusting type charger complicated operation is difficult for grasping, and output current is big, power consumption is many, can not carry, existing pulse output charger, complex structure can not be charged by capacity limit, the cost height to plurality of groups of storage batteries simultaneously.

The purpose of this utility model is to provide a kind of small-sized miniflow automatic control charger, exports constant little electric current, and low power consuming own is not even consumed energy, can carry, without manual operation, output voltage once can be to many storage battery serial connection charges with the different conversion automatically of battery tension during charging.

The utility model adopts following technical solution to realize: be provided with voltmeter at square casing front panel, ammeter and indicator light and voltage display switch button, rear board is provided with incoming line, output line and insurance, special character is that the circuit board in the casing is provided with appearance stream constant-current source circuit and pulse shaping circuit, holding the stream constant-current source circuit is respectively to be connected in series one group of polarity free capacitor at two input IN1 and IN2, connect rectification circuit after two groups of polarity free capacitors and constitute, rectification circuit output end is parallel with filter circuit and is connected in series pulse shaping circuit to output OUT+ and OUT-.The bridge rectifier that rectification circuit adopts diode D1-D4 to constitute, filter circuit is made of electrochemical capacitor C3, pulse shaping circuit adopts the bidirectional triode thyristor BCR of resistance guiding circuit control to constitute, controllable silicon BCR positive pole connects rectification circuit output cathode end, controllable silicon BCR negative pole meets output head anode OUT+ and promptly needs the storage batteries positive pole, is connected in series the circuits for triggering that a resistance constitutes between controllable silicon BCR positive terminal and the control end.

When rectification circuit works long hours the heating inefficacy,, need respectively be connected in series a diode D5 and D6 at rectification circuit two outputs for the energy protective circuit.

Capacitor C 1 and C2 adopt polarity free capacitor; C1 and C2 discharge and recharge constant; and charger forms pure condenser network when the output short circuit; electrical network there are protection and compatibilization; prevent from electrical network is produced harm, capacitor C 3 strobes and energy storage, and enough pulse currents are arranged when pulse generation; the bidirectional triode thyristor that impulse circuit adopts; when control end voltage is raised to certain value, the controllable silicon conducting, C3 place current potential descends; when dropping to certain value; the control end outage, controllable silicon ends, and the C3 current potential rises again; controllable silicon conducting again during to triggering level, thus pulse current formed.

Miniflow automatic control charger construction of the present utility model is simple, and volume is few, is easy to carry; charging current is constant, not can plurality of groups of storage batteries be charged simultaneously by capacity limit, the little power consumption of charger own; when non-loaded, do not consume energy, and when load short circuits, electrical network is had increase-volume and protective effect.

Description of drawings:

Fig. 1---block diagram of the present utility model;

Fig. 2---embodiment 1 schematic diagram of the present utility model;

Fig. 3---embodiment 2 schematic diagrams of the present utility model.

Provide embodiment of the present utility model below in conjunction with accompanying drawing and be used for further specifying the utility model.

Embodiment 1; with reference to figure 1; Fig. 2; it is 20F that input adds the appearance value; the polarity free capacitor C1 of withstand voltage 500V; C2; output current is 1A; C1; when C2 is 10F; output current is 0.5A; C1; C2 plays the current limit effect; discharge and recharge constant, the bridge rectifier that rectification circuit adopts diode D1-D4 (the withstand voltage 400V of D4007) to constitute, C3 is an electrochemical capacitor; strobe; and enough pulse currents being arranged when guaranteeing pulse generation, controllable silicon adopts the BCR.3-6A bidirectional triode thyristor, forms pulse current output; bidirectional triode thyristor can prevent that also the output storage battery from connecing anti-back and burning out charger to the charger back discharge; therefore battery tension can not make the controllable silicon conducting time under the resistance R effect, and circuit still is off state, plays a protective role.

Embodiment 2, and with reference to figure 1, Fig. 3, this embodiment is on the basis of embodiment 1, respectively is connected in series a diode D5 and D6 at rectification circuit two outputs, and when rectifier bridge worked long hours appearance heating inefficacy, D5, D6 can play the rectification protective effect.

Claims

1, efficient miniflow automatic control charger, include casing, circuit board, set voltmeter on the casing front panel, ammeter, indicator light, voltage display switch button, set incoming line on the rear board, output line and insurance is characterized in that also being provided with on the circuit board and hold stream constant-current source circuit and pulse shaping circuit, hold the stream constant-current source circuit and are at two inputs (IN1) and (IN2) respectively be connected in series one group of polarity free capacitor, connect rectification circuit (1) after two groups of polarity free capacitors and constitute, rectification circuit output end is parallel with filter circuit that electrochemical capacitor (C3) constitutes and serial connection pulse shaping circuit (2) to output (OUT+) and (OUT-).

2. according to the described efficient miniflow automatic control charger of claim 1, it is characterized in that described rectification circuit (1) adopts bridge rectifier.

3. according to claim 1 or 2 described efficient miniflow automatic control chargers, it is characterized in that described pulse shaping circuit (2) constitutes for the bidirectional triode thyristor (BCR) of resistance (R) guiding circuit control, controllable silicon (BCR) positive pole connects rectification circuit output cathode end, the controllable silicon negative pole connects output head anode (OUT+) and promptly needs the storage batteries positive pole, and series resistor between controllable silicon positive terminal and the control end (R) constitutes circuits for triggering.

4. according to the described efficient miniflow automatic control charger of claim 3, it is characterized in that rectification circuit two outputs respectively are connected in series a diode (D5) and (D6), working long hours at rectification circuit can play a protective role when heating was lost efficacy.