CN2728081Y

CN2728081Y - Mobile handset charger

Info

Publication number: CN2728081Y
Application number: CN 200420034599
Authority: CN
Inventors: 罗业富
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-30
Filing date: 2004-04-30
Publication date: 2005-09-21
Anticipated expiration: 2014-04-30

Abstract

The utility model relates to a mobile handset charger which can charge various mobile handsets without the normal power, comprising a DC/AC converting circuit and a battery charging controlling circuit. The mobile handset charger is characterized in that the input end of the battery charging controlling circuit is provided with four paralleled hand-driven generators in uniform distribution. A diode is arranged between the output end of each hand-driven generator and the input end of the battery charging controlling circuit. The central shaft of the hand-driven generator is provided with micro driven wheels. A driving wheel which is matched the micro driven wheels is arranged between the micro driven wheels. The end surface of the driving wheel is provided with a handle. The utility model is provided with the hand-driven generators, so a mobile handset battery can be charged without the normal power. The mobile handset charger is very convenient for travelers. The utility model is provided with an adapter, so various voltages and currents can be regulated by the adapter to the voltage and the current which are required by the mobile handset battery. Therefore, the charging requirements of mobile handsets in various types can be satisfied.

Description

Portable charger for mobile phone

Technical field

The utility model relates to a kind ofly also can be the portable charger for mobile phone of various cell-phone chargings from normal power.

Background technology

Existing charger for mobile phone is to cell-phone charging the time, all require the input of charger for mobile phone is connected with normal power, because the basic principle of existing charger for mobile phone is to convert AC power or DC power supply to Power Level that battery of mobile phone needs, but it in a single day leave normal power just can't be to any charging mobile phone battery.Because present battery of mobile phone quality instability, and most of personnel use telephone time more, particularly travel outdoors, go on business or in way by bus, in case the mobile phone short of electricity will bring great inconvenience, if operational thing will be brought great loss to the user.

Summary of the invention

Technical problem to be solved in the utility model is: provide a kind of and can carry, leave normal power also can be the portable charger for mobile phone of various model cell-phone chargings.

The utility model is to solve the problems of the technologies described above the technical scheme of taking to be: portable charger for mobile phone comprises ac-dc converter circuit and battery charge control circuit, it is characterized in that the input at battery charge control circuit is connected with the hand generator 4 of equally distributed four parallel connections, is connected with diode between the output of each hand generator and the input of battery charge control circuit; Miniature driven pulley 1 is installed on the central shaft of hand generator, the driving wheel 2 that is complementary with miniature driven pulley is housed between miniature driven pulley 1, handle 3 is installed on the end face of driving wheel.

The beneficial effects of the utility model are:

1, is furnished with hand generator on the electrical equipment, makes battery of mobile phone leave normal power and also can charge, for people go on business, out on tours has brought convenience;

2, be furnished with adaptation on the charger, adaptation can become various voltages, Current Regulation in the required voltage of battery of mobile phone, electric current, has satisfied the needs of various model cell-phone chargings.

Description of drawings

Fig. 1 is circuit theory diagrams of the present utility model.

Fig. 2 is a structural representation of the present utility model.

Embodiment

Embodiment 1

As Fig. 1, Fig. 2, shown portable charger for mobile phone, comprise ac-dc converter circuit and battery charge control circuit, ac-dc converter circuit is by bridge rectifier, triode, diode, resistance, electric capacity and switch transformer connect and compose, battery charge control circuit is by indicator light, diode, resistance, electric capacity, triode, the charging control circuit chip, discharge switch and change over switch connect and compose, input at battery charge control circuit is connected with equally distributed four hand generators 4, be in parallel between the hand generator, be connected with diode between the output of each hand generator and the input of battery charge control circuit, miniature driven pulley 1 is installed on the central shaft of hand generator, the driving wheel 2 that is complementary with miniature driven pulley is housed between miniature driven pulley, handle 3 is installed on the end face of driving wheel.

The direct voltage that produces about 300V after the 220V alternating current process VD1-VD4 rectification is added in the collector electrode of triode V1, this voltage also provides a starting resistor through starting resistance R2 for triode V1 simultaneously, make triode V1 conducting, + 300V voltage passes through 1.-2. winding of T1, the c of triode V1, the e utmost point, R3 constitutes the loop, the induced voltage of 3.-4. winding of switch transformer T1 generation at this moment is through VD5, VD6, C1, be added in the base stage of triode V1 after the C2 voltage-doubler rectification, its conducting is further deepened, and then make the c of triode V1, e electrode current Ic further rises, when Ic rises to greater than 60mA, pressure drop on the resistance R 3 will be greater than 0.7V, so VD7 conducting-triode V2 conducting-triode V1 ends, and finishes a cycle of oscillation.Between the triode V1 off period, energy stored is by the voltage of 5.-6. winding to about load output 12V of switch transformer T1 among the switch transformer TI.

Integrated circuit die I C1 in the battery charge control is pulse modulation controller MB3759,1,2,5,6 pin are the comparison amplifier input, 3 pin are phase control ends, 8,1 pin is a control signal output ends, phase difference 180 degree, 4 pin are dead band controllers, when this pin is low level, 8,11 pin are exported normal pulse signal, the circuit operate as normal; When this pin was high level, 8,11 pin output was turn-offed, and the resistance R of this bipod outside, capacitor C element constitute oscillator with internal circuit, export the pulse signal of tens kHz, and 14 pin are+and the output of 5V reference voltage breaks; The operating voltage of 12 pin input from the high-precision+5V reference voltage of 14 pin output, is used for other comparators under the effect of internal voltage regulator.

After the charger energized, ac-dc converter circuit output 12V voltage is supplied to battery charge control circuit, and this moment, red led H1 lighted, and the expression charger is started working.Except rechargeable battery being charged, also provide operating voltage through the 12V direct voltage after the VD8 rectification for integrated circuit die I C1, IC2 by triode V3.

If battery to be charged is a lithium ion battery, then need switch S 1 is pulled out the gear to " Li "; If battery to be charged is NI-G (Ni-Cd) or ni-mh (Ni-H) battery, then need 1 group of switch S to " Na " gear.Because NI-G (Ni-Cd) battery has memory characteristic, so before charging, need the electric weight that it is remaining to put.After pressing discharge switch S2, the IC2d output state flip, its 14 pin output hopping is a high level, and this high level is divided into 3 tunnel outputs: the one tunnel makes triode V4 conducting, and electric weight remaining in the battery will discharge by c, the e utmost point, R16, the R28 of triode V4; It is high level that another road makes 4 pin of IC1, and IC1 turn-offs output, and V3 is ended, not to battery charge; Third Road is lighted yellow light-emitting diode H2, and indicating circuit is in discharge condition.In triode V4 conduction period, the high level of its emitter makes IC2d keep the output high level by resistance R 15, finishes up to discharge.

After the electric weight bleed off finished in the battery, the voltage at battery two ends was lower than 2.8V, can not keep the conducting of 4V, and the saltus step of IC2d output is a low level, and H2 extinguishes, IC1 operate as normal, 8, the pulse enable signal triode V3 conducting of 11 pin output.When just beginning to charge, the battery both end voltage is lower, and charging current is bigger, pressure drop on the sample resistance R28 is greater than 0.15V, the equal output low level of IC2a, IC2b, the red light emitting diodes among the IC2c output high level dichromatic LED H3 is lighted, and the indication charger is in charged state.Carrying out along with the charging interval, the voltage at battery two ends is more and more higher, anode voltage is high more through R13, R30, R29, RP1, RP2 voltage after partial, the 16 pin voltages of IC1 are also just high more, and then make output pulse width narrow more, triode V3 ON time is short more, and charging current reduces thereupon; When battery electric quantity reached 50%, the pressure drop on the R28 was lower than 0.15V, and the saltus step of IC2b output is a high level, and the green LED among the H3 is lighted, and at this moment H3 is shown as orange; When battery electric quantity was charged to 75%, the pressure drop on the R28 was lower than 0.05V, the IC2a output state flip, and the red light emitting diodes among the H3 extinguishes, and then H3 is shown in green, and after this, charging current is less than 50mA, and charger changes the trickle charge state automatically over to.Growth along with the charging interval, the battery both end voltage constantly rises, when pressing, battery two outage grows to (lithium battery 4.2V when being higher than 4.2V, nickel-cadmium cell 4.5V), the battery both end voltage makes the 16 pin voltages of IC1 be higher than 31V through R13, R30 (R29), RP1 (RP2) voltage after partial, IC1 turn-offs output signal, and charging stops.

When short circuit appears in battery; charging current is heightened, and the pressure drop on the R28 will be higher than 0.2V (charging current is greater than 200Ma), and this voltage will make the 1 pin voltage of IC1 be higher than 0.2V; same IC1 can turn-off output signal, and protection triode V3 is unlikely to because of the overcurrent infringement.

Also can load onto the DC-DC transducer on charger for mobile phone, it can be with voltage, Current Regulation to required voltage, the electric current of different brackets battery of mobile phone.

Claims

1, a kind of portable charger for mobile phone, comprise ac-dc converter circuit and battery charge control circuit, it is characterized in that: the hand generator that is connected with equally distributed four parallel connections at the input of battery charge control circuit, be connected with diode between the output of each hand generator and the input of battery charge control circuit, miniature driven pulley is installed on the central shaft of hand generator, the driving wheel that is complementary with miniature driven pulley is housed between miniature driven pulley, on the end face of driving wheel handle is installed.