CN2093456U

CN2093456U - Stabilized voltage charger

Info

Publication number: CN2093456U
Application number: CN 91213817
Authority: CN
Inventors: 吴根大; 刘旭; 张裕禄
Original assignee: QINGYUN HARDWARE ELECTRICAL APPLIANCE FACTORY ZHENJIANG CITY
Current assignee: QINGYUN HARDWARE ELECTRICAL APPLIANCE FACTORY ZHENJIANG CITY
Priority date: 1991-06-01
Filing date: 1991-06-01
Publication date: 1992-01-15

Abstract

The utility model relates to a stabilized voltage charger, in particular suitable for supplying electricity with stabilized voltage for a wireless portable transceiver and charging a battery (a battery pack). In the utility model, the power supply of a seater and the back of a rectifying filter circuit are connected with time programmable circuits, controllable constant flow source circuits, and electronic switching circuits for output interfaces. Charge can proceed according to the different capacities of batteries and different use states of the batteries, and the self-discharge phenomenon of the charging battery (the charging battery pack) can be made up in a trickle method. The utility model which can discern and diagnose the ineffective battery can be used as stabilized voltage power supply when the wireless portable transceiver is used as a fixed station.

Description

Stabilized voltage charger

The utility model relates to a kind of voltage stabilizing charging device, is specially adapted to the voltage stabilizing power supply of hand-hold type wireless interspeaker and the charging of battery pack.

Along with the raising of communication up-to-dateness, the charging of various portable sets there is special requirement.At present the charging device that generally uses has following some deficiency: (1) can't select correct charging interval and charge power supply with different user modes according to different capabilities, overcharges and the phenomenon that is not fully filled all can influence life-span of battery; (2) because " self discharge " phenomenon of rechargeable battery is more serious, if fully charged battery does not use immediately, its electric energy tends in time " running away ", and this can directly influence the effective use with battery apparatus, is unallowed for some key departments especially; (3) dead battery can't be distinguished and diagnose, thereby cause unnecessary waste; (4) when the portable wireless intercom uses as fixed station, must join stabilized voltage power supply in addition, very inconvenient.

At above deficiency, the purpose of this utility model is will provide a kind of can carry out the programming charging in charging current and charging interval to the battery (group) of the different user modes of different capabilities; Charging ends, and circuit can change " trickle " state automatically over to, replenishes " self discharge " phenomenon of battery (group) with weak current; The voltage stabilizing charging device of stabilized voltage power supply is provided in the time of making diagnosis and can fix platform for the portable wireless intercom dead battery.

The utility model is achieved in that base power supply and current rectifying and wave filtering circuit back are connected to time programmable circuit, controlled constant-current source circuit and output interface electronic switching circuit, forms a complete voltage stabilizing charging device.

Below in conjunction with accompanying drawing a specific embodiment of the present utility model is explained in detail.

Fig. 1 is the circuit block diagram of voltage stabilizing charging device;

Fig. 2 is the circuit structure diagram of voltage stabilizing charging device.

The current rectifying and wave filtering circuit back is connected to time programmable circuit, controlled constant-current source circuit and output interface electronic switching circuit.

The time programmable circuit is mainly by programmable Timer integrated package 1IC ₁And by adjustable resistance 1R ₁, 1R ₂And 1C ₁The timing circuit of forming and by triode 1BG ₁And relay J ₁The switching circuit of forming is formed.The programmable Timer integrated package has been selected the MC14541 integrated package of U.S. Motorola Inc, 1IC for use ₁Pin 1,3 and 1R ₁, 1R ₂And 1C ₁Connect 1R ₁, 1R ₂And 1C ₁Determine the time t of programming timing circuit, regulated 1R ₁, 1R ₂Resistance just can change the size of t; 1IC ₁Output pin 8 and 1BG ₁, J ₁Connect; 1IC ₁Pin 2 pass through 1R ₄With dichromatic LED 1D ₁G end connect 1D ₁R end pass through 1R ₇With J ₁A normally-closed contact J _1-1Connect.Controlled constant-current source circuit mainly can be adjusted output integrated package of pressure-stabilizing 1IC by three ends ₂Serve as constant flow element, selected LM317T, 1IC here for use ₂An end pass through 1D ₄With the 1BG in the output interface electronic switching circuit ₂Collector electrode connects, and and J ₁Normally-closed contact J _1-2An end and 1R ₁₀Connect 1IC ₂The other end with by switch 1K _1-2, 1R ₁₁, 1R ₁₂The tunable load circuit and the J that form _1-2The other end connect, closed or open 1K _1-2, the resistance of scalable load resistance is to regulate the size of charging current.The output interface electronic switching circuit is mainly by charging inlet JK ₂, triode 1BG ₂, 1BG ₃And 1D ₃, 1D ₄The switching circuit and the light-emitting diode 1D that form ₅Form JK ₂With 1BG ₂, 1D ₅Connect 1BG ₂Collector electrode and 1D ₄Connect 1BG ₂Emitter and 1BG ₃Base stage and light-emitting diode 1D ₅Connect 1BG ₃Collector electrode and the time programmable circuit in 1IC ₁Pin 6,9 connect.

As charging inlet JK ₂When not connecing rechargeable battery, electronic switch is 1BG ₃The output high potential, 1IC ₁Pin 6,9 be cleared 1D ₁G bright, green light, indication mechanism is in wait state; At this moment pin 8 is exported high potentials, 1BG ₁The output electronegative potential, J ₁Break-make, J _1-2Disconnect, be " trickle " wait state this moment.Work as JK ₂When connecting normal rechargeable battery, 1BG ₃The output electronegative potential, 1IC ₁Also electronegative potential of pin 6,9, regulate 1R ₁, 1R ₂, the time of programming has also just decided to get off, at this moment 1D ₅Bright glowing; Begun to lose efficacy if be recharged battery, its equivalent internal resistance is zero, 1BG ₂, 1BG ₃All end, so the output high potential is 1D ₅Do not work, so promptly determine inefficacy resistance and be unlikely to cause waste.At this moment, 1IC ₁Pin 8 electronegative potentials, 1BG ₁The output high potential, J ₁Upset, J _1-1, J _1-2Connect 1D simultaneously ₁R bright, rubescent orange light is flicker alternately, indication mechanism has entered operating state.When the time of being programmed finishes, 1IC ₁The current potential of pin 8 jumps to electronegative potential from high potential, 1BG ₁, J ₁Upset again, J _1-2Disconnect 1R ₁₀Serial connection is advanced 1IC ₂The tunable load circuit in, 1R ₁₀Resistance very big, make the charging current of constant-current source very little, at this moment if do not take off rechargeable battery, then system enters " trickle " state, can solve " self discharge " phenomenon.Current rectifying and wave filtering circuit also can be used as stabilized voltage power supply and uses during as fixed station for the portable wireless intercom.Fig. 2 has only provided the circuit to a battery charge, if when many batteries are batteries charging, can realize as long as increase the same circuit and the interface of respective numbers.The charging output interface that conversion is suitable just can effectively charge to all Ni-Cr batteries (group).

The utility model has following advantage:

(1) can charge with state with different according to the different capabilities of battery, can stop the phenomenon of overcharging and being not fully filled;

(2) can remedy in the mode of " trickle " phenomenon of rechargeable battery (group) " self discharge ", guarantee the effective use with battery apparatus;

(3) can distinguish and diagnose dead battery, thereby can avoid unnecessary waste;

(4) when the portable wireless intercom uses as fixed station, can make stabilized voltage power supply and use.

Claims

1, a kind of voltage stabilizing charging device comprises base power supply, current rectifying and wave filtering circuit etc., it is characterized in that the back of current rectifying and wave filtering circuit is connected to time programmable circuit, controlled constant-current source circuit and output interface electronic switching circuit:

Programmable Timer integrated package 1IC in a, the time programmable circuit, pin 1,3 external by 1R ₁, 1R ₂And 1C ₁The timing circuit of forming, output pin 8 with by triode 1BG ₁And relay J ₁The switching circuit of forming connects;

Three ends can be adjusted output integrated package of pressure-stabilizing 1IC in b, the controlled constant-current source circuit ₂An end and output interface electronic switching circuit J ₁Normally-closed contact J _1-2An end and 1R ₁₀Connect 1IC ₂The other end with by 1K _1-2, 1R ₁₁, 1R ₁₂The tunable load circuit and the J that form _1-2The other end connect;

Charging inlet JK in c, the output interface electronic switching circuit ₂With 1BG ₂, 1BG ₃And 1D ₃, 1D ₄The switching circuit of forming connects, 1BG ₃Collector electrode and 1IC ₁In pin 6,9 connect.