CN2132327Y - Full automatic stepless storage battery charging machine for car - Google Patents

Abstract

Storage batteries are the necessities of motor vehicles, emergency lamps, etc. In the process of utilization, electric energy needs to be replenished continually with the drop of the voltage of the storage batteries. The aim of the utility model is to provide a fully automatic non-polarity charging machine for automobile storage batteries, having the function of automatically cutting off the batteries of a charger when the storage batteries are charged with required voltage and having a polar automatic identification system. The utility model is composed of a rectifying circuit, a polar recognition circuit of the storage batteries, a control circuit, a voltage setting circuit and a power cut circuit.

Description

Full automatic stepless storage battery charging machine for car

The utility model belongs to charging device

Storage battery is the necessity of motor vehicles, emergency light etc., in use along with the landing of battery tension, needs constant ground electric energy supplement.Present existing charging device is existing weak point on the function and on using, and the one, most of charger does not have auto-power-off device, needs to be operated and guarded by the people from start to finish; The 2nd, charger has the branch of both positive and negative polarity, when being connected with storage battery, must must note polarity, if cause charging device to the storage battery reverse charge, will cause the damage of charging device and storage battery.

The purpose of this utility model is to provide a kind of can cut off the charger power supply automatically when storage battery is charged to required voltage, and has the full-automatic electrodeless automobile storage battery charger of polarity automatic recognition system.

The utility model is set by rectification circuit 2, accumulator polarity identification circuit 1, control circuit 3, voltage and power-down circuit 4 is formed.Storage battery and accumulator polarity identification circuit 1 are connected, start-up control circuit 3, rectification circuit 2 and accumulator polarity identification circuit 1, voltage setting and power-down circuit 4, control circuit 3 energized, circuit enters operating state.

Fig. 1 is the utility model The general frame

Fig. 2 is the utility model circuit theory diagrams

Embodiment:

The utility model is set by rectification circuit 2, accumulator polarity identification circuit 1, control circuit 3, voltage and power-down circuit 4 is formed, and wherein the accumulator polarity identification circuit is by relay J ₁, capacitor C ₄, resistance R ₃, diode D ₃Form relay contact J _1-1Be connected between the node AB, J _1-1' be connected between the node AD, J _1-2' be connected between the Node B C, J _1-2Be connected between the node CD capacitor C ₄With resistance R ₃Back in parallel and relay J ₁, diode D ₃Series connection and being connected between 2 of the Node B D, voltage set and power-down circuit 4 by resistance R ₂, R ₄, R ₅, R ₇, R ₈, R ₉, R ₁₁, variable resistor W, capacitor C ₁, voltage stabilizing didoe D _Z1, diode D ₁, D ₃, triode T ₁, T ₂Form, variable resistor W one end passes through resistance R ₂Connecting resistance R ₁, the other end passes through resistance R ₄The connection circuit negative pole, its moving contact passes through capacitor C ₁Connecting resistance R ₁, by voltage-stabiliser tube D _Z1With diode D ₁Meet triode T ₁Base stage, resistance R ₅Be connected in resistance R ₁With triode T ₁Base stage between, T ₁Emitter connecting resistance R ₁, its collector electrode passes through resistance R ₇, R ₈Respectively with circuit negative pole and triode T ₂Base stage link to each other resistance R ₁Be connected in node E and resistance R ₂Between, resistance R ₉Be connected in T ₂Base stage and the circuit negative pole between, T ₂Collector electrode connecting resistance R ₁₁Control circuit 3 is by resistance R ₁, R ₆, R ₁₀, R ₁₂, R ₁₃, R ₁₄, triode T ₃, T ₄, capacitor C ₂, C ₃Diode D ₂, start button AN, relay J ₂Form resistance 6 one termination T ₁Emitter, another termination triode T ₃Base stage, T ₃Emitter pass through resistance R ₁₀Meet node E, capacitor C ₂With resistance R ₁₂Back one terminated nodes E in parallel, another termination starts the end of button AN, T ₃Collector electrode and the other end that starts button AN all pass through resistance R ₁₃With triode T ₄Base stage link to each other diode D ₂, capacitor C ₃And relay J ₂Meet T after the parallel connection ₄Collector electrode, T ₄Emitter connection circuit negative pole, resistance R ₁₄Be connected in T ₄Base stage and the negative pole of circuit between, J ₂Contact J _2-1One terminated nodes E, another termination rectification circuit output end positive pole, the node A of accumulator polarity identification circuit is connected in resistance R ₁And R ₂Interface point, node C connection circuit negative pole, rectification circuit adopt bridge rectifier.Polarity identification circuit 1 operation principle: suppose that the storage battery positive pole is connected on the circuit diagram upper left side storage battery pole clip, negative pole connects on the storage battery pole clip of right side, as shown in Figure 2, this moment diode D ₃Be in conducting state, relay J ₁On electric current is arranged by causing its adhesive, all normally opened contacts and normally-closed contact will switch to normally-closed contact and normally opened contact, just in time, make its storage battery polarity consistent, reach the purpose that charges normal with the circuit output polarity corresponding to the positive and negative end of pulsating direct current output voltage.Otherwise another kind of supposed situation be left side storage battery pole clip be the negative pole of storage battery, right side pole clip be the positive pole of storage battery because diode D in the circuit ₃Unilateral conduction, be in reverse blocking; The relay branch road does not have electric current to flow through, and adhesive action does not take place, and all are often opened, and normally closed all the maintenance as the figure state is equally also corresponding to the positive and negative terminal of the output voltage of pulsing.In addition, so because circuit breaker is that small-sized 6V relay is serially connected with divider resistance R ₃, it is can both operate as normal to being full of that voltage is high-end with bottle voltage low side to be charged in order to adapt to that the operating voltage of relay is selected, the divider resistance R of serial connection ₃Be for preventing that overtension from causing the damage of relay.The circuit start operation principle: the characteristics of circuit start are that the pole folder must be connected to storage battery or corresponding DC power supply, if do not have, press button circuit in any case and all can not start work, go up after polarity identification circuit identification conversion, press triode T when starting button AN when pole is sandwiched in bottle to be charged ₄Obtain conducting work behind the normal bias voltage, make relay J ₂Have electric current to flow through, after the adhesive Rectified alternating current behind the step-down rectifier be connected on the bottle to be charged, when button upspring reset after, triode T ₄Conducting change by triode T ₃Control, and T ₃Forward bias voltage be by current-limiting resistance R ₃R is provided ₃Pressure drop be because it flows through bigger charging current produces.T ₃After the conducting, be again T ₄The conducting of keeping normal bias voltage is provided.Moving contact by regulator potentiometer W and ground end (common port) are that the resistance of negative pole can change triode T ₁With voltage-stabiliser tube by and conducting voltage, so-called conducting voltage be the final voltage of charging also be protection outage voltage, once T ₁Conducting, T ₂Obtain the positive bias-voltage of conducting, T thereupon ₂After the conducting, because shunting action T ₃Supply with T ₄Positive assistant general can not guarantee T ₄Conducting makes it enter cut-off state, relay J ₂Lose current path and cause discharging, the Voltage pulsating direct-current supply of sever supply storage battery charging reaches the purpose that protection is cut off the power supply, and expression charging simultaneously finishes.

Claims (1)

1, full-automatic electrodeless automobile storage battery charger contains rectification circuit 2, it is characterized in that containing the accumulator polarity identification circuit, and control circuit, voltage are set and power-down circuit, and wherein the accumulator polarity identification circuit is by relay J ₁, capacitor C ₄, resistance R ₃, diode D ₃Form the contact J of relay _1-1Be connected between the node AB J _1-1' be connected between the node AD J _1-2' be connected between the Node B C J _1-2' be connected between the node CD capacitor C ₄With resistance R ₃Back in parallel and relay J ₁, diode D ₃The series connection and be connected between the Node B D; Voltage setting and power-down circuit 4 are by resistance R ₂, R ₄, R ₅, R ₇, R ₈, R ₉, R ₁₁, variable resistor W, capacitor C ₁, voltage stabilizing didoe D _Z1, diode D ₁, D ₃Triode T ₁, T ₂Form, variable resistor W one end passes through resistance R ₂Connecting resistance R ₁, the other end passes through resistance R ₄The connection circuit negative pole, its moving contact passes through capacitor C ₁Connecting resistance R ₁, by voltage-stabiliser tube D and diode D ₁Meet triode T ₁Base stage, resistance R ₅Be connected in resistance R ₁With triode T ₁Base stage between, T ₁Emitter connecting resistance R ₁, its collector electrode passes through resistance R ₇, R ₈Respectively with circuit negative pole and triode T ₂Base stage link to each other resistance R ₉Be connected in T ₂Base stage and the circuit negative pole between, T ₂Collector electrode connecting resistance R ₁₁Control circuit 3 is by resistance R ₁, R ₆, R ₁₀, R ₁₂, R ₁₃, R ₁₄, triode T ₃, T ₄, capacitor C ₂, C ₃Diode D ₂, start button AN, relay T ₂Form resistance 6 one terminating resistor R ₁, another termination triode T ₃Base stage, resistance R ₁Another terminated nodes E, T ₃Emitter pass through resistance R ₁₀Meet node E, capacitor C ₂With resistance R ₁₂Back one terminated nodes E in parallel, another termination starts the end of button AN, T ₃Collector electrode and the other end that starts button AN all pass through resistance R ₁₃With triode T ₄Base stage link to each other diode D ₂, capacitor C ₃And relay J ₂Meet T after the parallel connection ₄Collector electrode, T ₄Emitter connection circuit negative pole, resistance R ₁₄Be connected in T ₄Base stage and the negative pole of circuit between, T ₂Contact T _2-1One terminated nodes E, another termination rectification circuit output end positive pole, the node A of accumulator polarity identification circuit is connected in resistance R ₁And R ₂The junction, node C connection circuit negative pole.

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