CN2225103Y

CN2225103Y - Automatic non-polarity fast electric charger

Info

Publication number: CN2225103Y
Application number: CN 95204331
Authority: CN
Inventors: 邹化治
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-03-03
Filing date: 1995-03-03
Publication date: 1996-04-17
Anticipated expiration: 2005-03-03

Abstract

The utility model belongs to a non-polarity fast charger, comprising a transformer, a charging circuit and an automatic control circuit for charging, wherein, the charging circuit is an identification charging circuit with non-polarity which is composed of controlled silicon; the controlled silicon is connected in series between a charging connection and the secondary coil of a transformer; the controlled silicon is connected in parallel with diodes with opposite directions; the control pole of the controlled silicon is connected with the positive pole of the other controlled silicon through the diode and a resistance. The charging connection is connected with a discharging circuit, a discharging control circuit and the automatic control circuit for charging through a bridge rectification circuit; the quick charge can be realized through the charging and the discharging are carried out at the same time. The utility model has convenient operation, non-required monitoring and regulating and reliable working.

Description

Nonpolarity full-automatic quick charger

The utility model belongs to a kind of non-polar quick charger.

Present commercially available battery charger and since general personnel be ignorant of the both positive and negative polarity of storage battery, easily with the polarity wrong, cause storage battery to damage, simultaneously also fragile charger because of reverse charge.And general charger, the charging interval was about 16～20 hours, if strengthen charging current for accelerating charging rate, then can produce the accumulator plate polarization, and overcharged and power shortage causes harm to storage battery.

The purpose of this utility model is to address the above problem, and a kind of simple in structure, reliable operation is provided, can the limit charging, edge discharge can shorten the charging interval, the non-damageable nonpolarity full-automatic quick charger of storage battery.

It includes transformer and charging circuit the utility model, the automatic charge control circuit, charging circuit is nonpolarity identification charging circuit, nonpolarity identification charging circuit is by two controllable silicon SCR 1, SCR2 constitutes, the silicon controlled negative electrode is serially connected in the two ends of transformer secondary output coil respectively, its anode is connected in series charging connector respectively, on controllable silicon respectively and be connected to the opposite diode of direction, the silicon controlled control utmost point passes through diode, resistance connects another silicon controlled anode, on charging connector, be connected to bridge rectifier, cross-over connection has discharge circuit on the bridge rectifier, charge/discharge control circuit and automatic charge control circuit, two contact two points of the load-relay J1 of charge/discharge control circuit are connected across on another secondary coil, on discharge circuit, be serially connected with controllable silicon SCR 3, double-contact two contacts of two contacts are connected on respectively on the control utmost point and negative electrode of controllable silicon SCR 3, the half-wave rectifying circuit of being made up of diode and resistance in the control utmost point of controllable silicon SCR 3 serial connection.

The utility model is simple in structure, easy to operate, need not monitoring and regulates, and reliable operation, can improve charge efficiency, is particularly suitable for the quick boost charge of small and medium-sized car and motorcycle and uses, and also can be used for doing to detect on the power supply of miscellaneous equipment using.

Fig. 1 is the utility model embodiment one circuit diagram;

Fig. 2 is the utility model embodiment two circuit diagrams.

Below in conjunction with accompanying drawing the utility model is further described.

Embodiment one.As shown in Figure 1, the utility model includes transformer T and charging circuit, the automatic charge control circuit, charging circuit is nonpolarity identification charging circuit, nonpolarity identification charging circuit is by two controllable silicon SCR 1, SCR2 constitutes, controllable silicon SCR 1, the negative electrode of SCR2 is serially connected in the two ends of the secondary coil L1 of transformer T respectively, its anode is connected in series charging connector X1 respectively, X2, in controllable silicon SCR 1, on the SCR2 respectively and be connected to the opposite diode D1 of direction, D4, controllable silicon SCR 1, the control utmost point of SCR2 is respectively by diode D2 and resistance R 2, diode D3 and resistance R 1 connect controllable silicon SCR 2, the anode of SCR1, at charging connector X1, be connected to the bridge rectifier of forming by D7～D10 on the X2, cross-over connection has discharge circuit on the bridge rectifier, charge/discharge control circuit and automatic charge control circuit, two contact two point J1-1 of the load-relay J1 of charge/discharge control circuit, J1-2 is connected across on another secondary coil L2, in discharge circuit, be serially connected with controllable silicon SCR 3, the double-contact two contact J1-2 of two contacts, J1-1 is connected on the control utmost point and the negative electrode of controllable silicon SCR 3 respectively, and the half-wave rectifying circuit that serial connection is made up of diode D6 and resistance R 7 is extremely gone up in the control of controllable silicon SCR 3.

As shown in Figure 1, charge/discharge control circuit is the switching circuit of adjustable resistance W3, diode D5, triode BG1, relay J 1 composition, relay J 1 is the load of triode BG1, the positive pole of diode D5 connects the base stage of triode BG1, the negative pole of diode D5 connects the adjustment arm of adjustable resistance W3, and adjustable resistance W3 is connected in series with one of them joint of charging connector.The automatic charge control circuit is made of integrated package TWH8751, the pin two of integrated package TWH8751 connects the adjustment arm of limit adjustable resistance W1, pin one connects the collector electrode of triode BG2, the base stage of triode BG2 connects the adjustment arm of lower limit adjustable resistance W2, the pin 4 of integrated package TWH8751 is serially connected with relay J 2, the normally opened contact J2-1 of relay J 2 is serially connected on the primary coil of transformer T, and its normally-closed contact J2-2 is serially connected on the adjustment arm of lower limit adjustable resistance W2.

As shown in Figure 1, on the automatic charge control circuit and be connected to warning circuit 1, can be connected in series alarm lamp ZD on the warning circuit 1, be serially connected with the normally-closed contact J2-3 of J2 on the warning circuit 1.Anode at controllable silicon SCR 1, SCR2 is serially connected with resistance R 3 and gauge outfit A respectively.Cross-over connection has voltage-stabiliser tube DW1 on double-contact two contacts of two contacts.

Connect the positive pole of storage battery as charging connector X1, during the negative pole of X2 termination storage battery, the positive pole of storage battery triggers controllable silicon SCR 2 conductings through resistance R 3, R1, diode D3, the 220V alternating current through the normally opened contact J2-1 of relay J 2 again through transformer T step-down, when the upper end of secondary coil L1 is positive half cycle, through diode D1 rectification and resistance R 3 current limlitings and controllable silicon SCR 2 formation charge circuits, normally charge to storage battery.Because the negative pole of X2 termination storage battery, diode D2, controllable silicon SCR 1 are ended, and when the lower end of secondary coil L1 was positive half cycle, storage battery did not charge.When X1 termination battery terminal negative, during X2 termination battery positive voltage, diode D2 conducting triggers controllable silicon SCR 1 conducting, when the lower end of secondary coil L1 is positive half cycle, charging current constitutes charge circuit to charge in batteries through diode D4, battery positive voltage, battery terminal negative, resistance R 3, controllable silicon SCR 1, when the upper end of secondary coil L1 is positive half cycle, then do not charge.As seen no matter how the polarity of storage battery connects, charger can both be normally to charge in batteries.

When X1 termination battery positive voltage, during the negative pole of X2 termination storage battery, not conducting of diode D5, triode BG1 ends, and relay J 1 discharges, and two contact two point J1-1, J1-2 are in position as shown in the figure.When first positive half cycle of alternating current arrives, electric current is through the D1 rectification, R3 current limliting and SCR2 constitute charge circuit to charge in batteries, when first negative half period arrives after the alternating current zero passage, voltage on the secondary coil L2 is through diode D6, resistance R 7 halfwave rectifier obtain 3 conductings of voltage triggered controllable silicon SCR, storage battery by SCR3 to capacitor C charging (battery discharge), when the capacitor C both end voltage rises to approximate when equating with cell voltage, while L2 alternating voltage zero-crossing, SCR3 automatically shuts down, stop conducting, second positive half cycle arrival process is the same, capacitor C is released by resistance R 6 simultaneously, prepares charging next time, and above process is gone round and begun again.Of short duration discharge can be eliminated the pole plate polarization that large current charge causes, makes large current charge carry out smoothly, and makes the charging temperature rise controlled.When X2 termination battery positive voltage, when X1 connects battery terminal negative, diode D5 conducting, electric current is full closing after BG1 amplifies, relay J 1 adhesive, this moment, two contact two point J1-1, J1-2 were in lower end position, when the upper end of secondary coil L1 is positive half cycle, secondary coil L2 upper end also is positive half cycle, controllable silicon SCR 3 conductings, battery discharging is when the lower end of secondary coil L1, L2 is positive half cycle, controllable silicon SCR 3 is ended, charge in batteries.

When battery tension is not enough, connect X1, X2 end, when X1 be anodal, when X2 is negative pole, diode D10, D8 conducting, output b is a positive pole, c is a negative pole.When X2 connects positive pole, when X1 connect negative pole, then diode D9, D7 conducting equally also was that b is anodal, and c is a negative pole, and no matter how X1, X2 connect storage battery, and output polarity is all fixed, and powers so just for operating voltage of integrated package TWH8751.When battery tension is low, TWH8751 is the low level conducting because of pin two, relay J 2 adhesives, its normally opened contact J2-1 connects, and normally-closed contact J2-2 disconnects, and the normally-closed contact J2-3 of serial connection disconnects on alarm lamp and the warning circuit 1, begin charging, when voltage was charged to setting, TWH8751 ended because of pin two is high level, and J2-1 disconnects, J2-2 connects, J2-3 connects alarm lamp ZD and warning circuit 1, and reports to the police charging termination.The effect of J2-2 is that voltage raises and makes the BG2 conducting cause misoperation when preventing to charge.

Embodiment two.As shown in Figure 2, the utility model automatic charge control circuit is made of TL431, its control utmost point is serially connected with the following margining detecting circuit of being adjusted last margining detecting circuit that arm and voltage-stabiliser tube DW2 compose in series and being composed in series by adjustment arm and the voltage-stabiliser tube DW3 of lower limit adjustable resistance W5 by upper limit adjustable resistance W4, the upper and lower limit testing circuit also connects, TL431 is connected in series with relay J 2, the normally-closed contact J2-1 of J2 is serially connected on the primary coil of transformer T, and normally opened contact J2-2 is serially connected on the adjustment arm of lower limit adjustable resistance W5.Other structure of present embodiment is identical with embodiment one.

After the storage battery energized, storage battery normally charges, when the storage battery both end voltage is charged to higher limit, voltage-stabiliser tube DW2 punctures conducting, make the TL431 conducting, relay J 2 adhesives, its normally-closed contact J2-1 disconnects, make storage battery stop charging, normally opened contact J2-2 closure makes down the monitoring of margining detecting circuit input, the setting of voltage-stabiliser tube DW3, guarantee storage battery not when stopping to charge terminal voltage descend and restart and charge, make charger be operated in reliable and stable state.When battery tension discharged into lower limit, voltage-stabiliser tube DW2, DW3 all became and end, and relay J 2 discharges and resets, and J2-1 closure makes storage battery begin charging.J2-2 disconnects and makes down margining detecting circuit stop monitoring.The also available μ A431 of the TL431 of present embodiment substitutes.Capacitor C 1 plays ac filter and pressure stabilization function.

Claims

1, a kind of nonpolarity full-automatic quick charger, it includes transformer and charging circuit, the automatic charge control circuit, it is characterized in that charging circuit is nonpolarity identification charging circuit, nonpolarity identification charging circuit is by two controllable silicon SCR 1, SCR2 constitutes, the silicon controlled negative electrode is serially connected in the two ends of transformer secondary output coil respectively, its anode is connected in series charging connector respectively, on controllable silicon respectively and be connected to the opposite diode of direction, the silicon controlled control utmost point passes through diode, resistance connects another silicon controlled anode, on charging connector, be connected to bridge rectifier, cross-over connection has discharge circuit on the bridge rectifier, charge/discharge control circuit and automatic charge control circuit, two contact two points of the load-relay J1 of charge/discharge control circuit are connected across on another secondary coil, on discharge circuit, be serially connected with controllable silicon SCR 3, double-contact two contacts of two contacts are connected on respectively on the control utmost point and negative electrode of controllable silicon SCR 3, the half-wave rectifying circuit that serial connection is made up of diode and resistance in the control extremely of controllable silicon SCR 3.

2, charger according to claim 1, it is characterized in that charge/discharge control circuit is the switching circuit of adjustable resistance W3, diode D5, triode BG1, relay J 1 composition, relay J 1 is the load of triode BG1, the positive pole of diode D5 connects the base stage of triode BG1, the negative pole of diode D5 connects the adjustment arm of adjustable resistance W3, and adjustable resistance W3 is connected in series with one of them joint of charging connector.

3, charger according to claim 1 and 2, it is characterized in that the automatic charge control circuit is made of integrated package TWH8751, the pin two of integrated package TWH8751 connects the adjustment arm of limit adjustable resistance W1, pin one connects the collector electrode of triode BG2, the base stage of triode BG2 connects the adjustment arm of lower limit adjustable resistance W2, the pin 4 of integrated package TWH8751 is serially connected with relay J 2, the normally opened contact J2-1 of relay J 2 is serially connected on the primary coil of transformer T, and its normally-closed contact J2-2 is serially connected on the adjustment arm of lower limit adjustable resistance W2.

4, charger according to claim 1 and 2, it is characterized in that the automatic charge control circuit is made of TL431, its control utmost point is serially connected with the following margining detecting circuit of being adjusted last margining detecting circuit that arm and voltage-stabiliser tube DW2 compose in series and being composed in series by adjustment arm and the voltage-stabiliser tube DW3 of lower limit adjustable resistance W5 by upper limit adjustable resistance W4, the upper and lower limit testing circuit also connects, TL431 is connected in series with relay J 2, the normally-closed contact of J2 is serially connected on the primary coil of transformer T, and normally opened contact is serially connected on the adjustment arm of lower limit adjustable resistance W5.

5, charger according to claim 3 is characterized in that on the automatic charge control circuit and is connected to warning circuit, is serially connected with the normally-closed contact of relay J 2 on the warning circuit.

6, charger according to claim 1 and 2 is characterized in that being serially connected with resistance and gauge outfit respectively at the anode of controllable silicon SCR 1, SCR2.

7, charger according to claim 1 and 2 is characterized in that cross-over connection has voltage-stabiliser tube on two contact two points.