CN2620386Y

CN2620386Y - Charger for mobile phone

Info

Publication number: CN2620386Y
Application number: CN 03226621
Authority: CN
Inventors: 罗朝海; 廖云雪; 计乐强
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-05-30
Filing date: 2003-05-30
Publication date: 2004-06-09
Anticipated expiration: 2013-05-30

Abstract

The utility model discloses a cell phone charger for AC and DC power supply, which is convenient to use in home or traveling. The charger comprises a square upper shell body 1, a square lower shell body 2, a circuit board 4, a battery fixture 9, an indicator light 3 and a circuit 5. The lower shell body is provided with the circuit board, the circuit, the battery fixture and the indicator light, wherein, the circuit comprises a first rectifier and filter circuit, a switching power supply circuit, a second rectifier and filter circuit, a charging circuit, a battery charging and charging finish indication circuit, a DC output circuit and a battery pack circuit; the DC output circuit is connected with the cell pone for charging, through a J1 plug wire base and a J2 plug wire base of the charger shell by connecting wires.

Description

Charger for mobile phone

Technical field

The utility model relates to a kind of charger for mobile phone, especially a kind of charger for mobile phone of AC/DC, and it can be respectively charges to the mobile phone of different model.

Background technology

At present, the charger for mobile phone of any band machine charging all must connect civil power and could work, otherwise mobile phone can't charge, when go out, on car and boat, in the open air, then can't work during the mobile phone short of electricity, influence communication, make troubles to the work life, even unimaginable serious consequence is arranged.

Summary of the invention

The utility model provides a kind of alternating current-direct current charger for mobile phone, both can use the AC100-240V electric main, also can use common disposable dry cell and rechargeable battery to give cell-phone charging.

The utility model comprises: upper shell, lower house, indicator light, circuit board, the power supply wiring of circuit city, J1 plug bond, J2 plug bond; Battery clamp is characterized in that: upper shell and lower house are rectangle, flexibly connect; Upper shell has indicator lamp hole; Make indicator light pass demonstration, the lower house Lower Half is equipped with battery clamp, so that battery is installed.The first half is equipped with circuit board, and the circuit elements device that the utility model adopts is installed on the circuit board; The bottom of lower house has square opening by the battery clamp installation place, and battery cover board is arranged on the square opening, and this cover plate and lower house flexibly connect; The upper end of housing has two plug cord accessory power outlet holes, and mounting receptacle is so that the attachment plug line, and the lower end of housing has the battery line delivery outlet, so that draw supply main; Supply main, plug cord, the indicator light line is all received on the circuit of circuit board.Supply main is switched to mains supply AC100-240V, and plug cord output has two groups to adapt to the needs of different cultivars standard mobile phone charging, and indicator light is provided with three and is respectively red, yellow, green.The red bright expression mains supply in lower end inserts, and middle green indicating lamp is bright, and yellow indicator lamp puts out, and pilot cell is filled, and the upper end yellow indicator lamp is bright, and pilot cell is recharged.

The utility model uses four joint " AAA " rechargeable battery or common batteries (common batteries can not be used for being recharged), by battery clamp four batteries is formed the series battery form, the positive and negative end of battery pack is connected respectively to the relevant position of circuit.

The circuit that the utility model adopts can use electric main to charge to cell-phone charging with to the rechargeable battery that circuit uses simultaneously; When not using electric main, use rechargeable battery or common batteries to cell-phone charging by circuit.

The circuit that the utility model adopts comprises first current rectifying and wave filtering circuit, switching power circuit, second current rectifying and wave filtering circuit, and charging circuit and battery voltage detection and charging are full of indicating circuit, dc output circuit, battery circuit.

First current rectifying and wave filtering circuit comprises: diode D1 capacitor C 1 resistance R 1, R2, R3, indicator light D8; Switching power circuit comprises triode Q1, transformer T, resistance R 4, R5, R6, R7, R8, capacitor C 2, C3, C4, diode D2, D3, D4; Second current rectifying and wave filtering circuit comprises diode D5, capacitor C 5; Charging circuit and battery voltage detection and charging, be full of indicating circuit and comprise triode Q2, Q3, resistance R 9, R10, R11, R12, R13, R14, R15, potentiometer RV, comparator TL431, green indicating lamp D10, yellow indicator lamp D9; Dc output circuit comprises diode D6, D7, socket J1, J2; Battery circuit comprises battery pack E.

The input of first current rectifying and wave filtering circuit meets power supply AC100-240V; Output connects the switching power circuit input; Switching power circuit output connects the input of second current rectifying and wave filtering circuit; The indicating circuit input is exported and one the tunnel connect charging circuit and battery voltage detection and charging, is full of to second rectification circuit, and another road connects dc output circuit; Charging circuit output connects battery pack; Battery pack output connects dc output circuit.

The operation principle of circuit:

With after 1. 2. termination is gone into the AC220V civil power of circuit, through diode D1 capacitor C1 and resistance R 1, R2, R3, first current rectifying and wave filtering circuit that indicator light D8 forms forms about 300V direct voltage, exports 3., 4. to connect switching power circuit.Switch power supply route switch triode Q1, transformer T; Resistance R 4, R5, R6, R7, R8, capacitor C 2, C3, C4 diode D3, D4 voltage stabilizing didoe D2 form.Resistance R 4 one termination end points 3., other end series resistance R8, the base stage that is connected to switch triode Q1 provides starting current, 6. the elementary winding L 1 one termination end points of the transformer T 3. other end connect the Q1 collector electrode, the emitter of Q1 connects 4. L2 winding one end of primary of end points, 7. another end points connects the negative terminal of diode D3, after switch triode Q1 obtains starting current, switching tube begins conducting, collector current increases at elementary winding L 1 neutral line of transformer T, in winding L 2, induct and send as an envoy to the Q1 base stage for just, the positive feedback voltage that emission is very negative, make Q1 enter the saturation region rapidly, induced potential gives capacitor C 4 chargings simultaneously, C4 one end is the 7. end that meets L2, other end connecting resistance R6, the mid point of R7 series connection 8., the other end of R6 connects the Q1 base stage after connecting R8 one end, along with the charging voltage of capacitor C 4 increases, the base voltage of Q1 reduces gradually makes Q1 withdraw from the saturation region, the Q1 collector current begins to reduce, the magnetic flux that is produced by collector current among the transformer T coil L1 begins to reduce, and inducts among the L2 and sends as an envoy to the base stage of Q1 for negative, launches very positive negative feedback voltage; Q1 is ended rapidly, 4. 7. the upper end that L2 produces be positive induced potential for negative lower end, make Q1 anti-inclined to one side on the one hand, through diode D3 rectification capacitor C3 is charged on the other hand, 4. C3 one termination holds, the anode of another terminating diode D3, to the voltage of C3 charging sampling voltage as output, D2 cooperates with voltage stabilizing didoe, D2 one termination capacitor device C3, other end connecting resistance R8 one end.D2 voltage-stabiliser tube voltage stabilizing value is low or the C3 sampling voltage is higher, and switching tube Q1 ON time is shortened, and output voltage reduces, otherwise output voltage raises, and finishes the voltage stabilizing function of whole Switching Power Supply.In the Q1 off period, T level of transformer L3 winding produces voltage L3 output and 9., 10. outputs to second current rectifying and wave filtering circuit through diode D5 rectification, C5 filtering forms about 8.5V direct voltage, this voltage output end is through a minute two-way, one the tunnel is connected to socket J1 through diode D6, J2 links to each other with mobile phone for cell-phone charging by connecting line, finishes the function of regular handset charger; Another road meets triode Q3 four joint models is " AAA " rechargeable battery pack E charging; The D6 positive pole connects end points and triode Q3 collector electrode, the emitter of Q3 connects battery pack E anode, after connecting pond to be charged, when the battery to be charged that is lower than 5.2V is lower than 2.5V after resistance R 15 series connection potentiometer RV dividing potential drops, comparator TL431 presents cut-off state, then triode Q3 base potential is a high potential, and the Q3 saturation conduction is to battery charge.The 10. end of comparator TL431 one termination transformer secondary output L3 connects the Q3 base stage behind the other end series resistor R14, the K termination potentiometer movable end of comparator TL431.When cell voltage was charged to 5.2V, the K terminal voltage of comparator reached 2.5V, and TL431 comparator upset is reduced to 4V with the base potential of Q3, made triode Q3 emitter junction partially anti-and end, and green LED D10 is bright, stops battery charge.The cell voltage that is full of electricity is 5.2V, is connected to socket J1 through diode D7, and J2 links to each other with mobile phone to cell-phone charging by line.The D7 positive column connects the Q3 emitter, the negative terminal of diode D6, D7 is received socket J1, J2 again after parallel connection, D6, D7 effect are to select civil power to give cell-phone charging to cell-phone charging or battery automatically, when plugging civil power, because of switch power source output voltage is higher than cell voltage, D6 conducting D7 adopts civil power to give cell-phone charging by event; When not inserting civil power, the D7 conducting, D6 ends, and at this moment, can give cell-phone charging by battery.Red led D8 be attempted by after resistance R 3 is connected current rectifying and wave filtering circuit 3., 4. end, connect civil power after red light bright; The 10. end of yellow indicator lamp D9 one termination transformer T3, connect triode Q2 emitter behind the other end series resistor R11, when four joints rechargeable battery to be filled is correctly packed in the circuit, when connecting civil power, by by TL431, resistance R 15, the battery voltage detection circuit that potentiometer RN forms, judge whether pond to be charged is full of, when being lower than 5.2V as if cell voltage to be charged, triode Q2 conducting, yellow indicator lamp D9 is bright, and pilot cell is in the charging; Represent that when detecting cell voltage for 5.2V battery is full of, green indicating lamp D10 is bright, and yellow indicator lamp D9 puts out; D10 one termination Q3 base stage, another termination TL431 comparator.

The utility model is described in further detail below in conjunction with drawings and the embodiments.

Description of drawings

Fig. 1 is the utility model charger for mobile phone structural representation.

Fig. 2 is the circuit block diagram that the utility model adopts.

Fig. 3 is the circuit theory diagrams that the utility model adopts.

Embodiment

The utility model is with reference to accompanying

drawing

1,2,3 design and manufactures.

As Fig. 1, the utility model comprises the rectangle housing, housing divides upper shell 1, lower house 2, red, green, yellow indicator light 3, circuit board 4, circuit 5, city's power supply wiring 6, J1 plug bond 7, J2 plug bond 8, battery clamp 9, upper shell and lower house flexibly connect, and the corresponding indicator light of upper shell position has indicator lamp hole, indicator light is passed for observing judgement; When power supply wiring 6 one ends in lower house Lower Half city are equipped with battery clamp 9 and pack four AAA rechargeable batteries or common batteries into, form series battery, 12 ends of the positive termination circuit plate circuit of battery pack, the 10. end of negative terminal connection circuit; The bottom of lower house has square opening by the battery clamp installation place, has cover plate, cover plate and lower house to flexibly connect on the square opening.The first half of lower house is equipped with circuit board 4 adorns circuit elements device 5 on circuit board, the upper end of housing has two plug cord delivery outlets so that export J1 plug cord 7 and J2 plug cord 8, and the lower end of housing has the power line delivery outlet so that draw city's power line 6.

The circuit structure that the utility model adopts is shown in Fig. 2 circuit block diagram, by the first whole filter circuit, switching power circuit, second current rectifying and wave filtering circuit, charging circuit and battery voltage detection and charging, be full of indicating circuit, battery circuit, dc output circuit and form; Concrete components and parts such as Fig. 3 circuit theory diagrams design assembling on circuit board 4;

The input of first rectification circuit 1., 2. connect the alternating current 220V civil power, the output of first rectification circuit 3., 4. connect switching power circuit, pair winding L 3 of transformer T after transformer T change is sent, 9., 10. hold output voltage to be connected to second current rectifying and wave filtering circuit, the second rectification filter circuit output end one tunnel is connected to charging circuit and battery voltage detection and charging, be full of indicating circuit, another road outputs to dc output circuit, D6 charging circuit and battery charge, be full of indicating circuit output , 10. be connected to battery circuit, battery circuit outputs to dc output circuit D7 by the J1 socket, and J2 socket and connecting line are received mobile phone and given cell-phone charging.The utility model can be given the cell-phone charging of different model by using the plug cord that is complementary with mobile phone instead at J1 and J2 place.

Claims

1, a kind of charger for mobile phone, comprise upper shell, lower house, indicator light, circuit board, battery clamp, circuit, it is characterized in that upper shell and lower house are rectangle, flexibly connect that upper shell (1) has indicator lamp hole, lower house (2) Lower Half is equipped with battery clamp (9), the first half is equipped with circuit board (4), and circuit elements device (5) is installed on the circuit board, and the bottom battery anchor clamps installation place of lower house has square opening, battery cover board is arranged on the square opening, and cover plate and lower house flexibly connect; The upper end of housing has two socket apertures, mounting receptacle J1 plug line and J2 plug line; The switch power supply output line hole, lower end of housing.

2, charger for mobile phone according to claim 1, it is characterized in that the circuit that is adopted comprises first current rectifying and wave filtering circuit, switching power circuit, second current rectifying and wave filtering circuit, charging circuit and battery voltage detection, charge, be full of indicating circuit, dc output circuit, battery circuit; First current rectifying and wave filtering circuit output is 3., 4. termination connects switching power circuit, through transformer T pay winding L 3 outputs 9., 10. termination second current rectifying and wave filtering circuit; Second current rectifying and wave filtering circuit is exported , is 10. held one the tunnel to connect charging circuit and battery voltage detection, charge, be full of indicating circuit, another road meets dc output circuit D6, charging circuit and battery voltage detection, charge, be full of indicating circuit output , 10. connect battery circuit, battery circuit output meets dc output circuit D7, dc output circuit output , 10. connects J1 plug cord seat, J2 plug cord seat.