CN2245808Y - Mobile communication battery pack with miniatur echarging device in it - Google Patents

Abstract

The utility model discloses a mobile communication battery pack with an inbuilt miniature charging device. Mains supply is input by a power plug A, the mains supply is processed by a capacitor C1 which is used for current limiting, rectifiers D1-D4 and a capacitor C2, and finally a DC voltage is obtained, a frequency changing circuit which is composed of a frequency changing triode BG1, a frequency changing transformer B, etc. converts the frequency of the DC voltage into an alternating voltage, the frequency of which is tens of kilohertz, the voltage which is secondarily sensed and isolated by the frequency changing transformer B is rectified by a diode D6 and charges a battery pack E, and a contact K is used for leading out the positive pole and the negative pole of the battery pack in order to use. The utility model has the advantages of simple circuit, easy fabrication, low cost, light weight, small size, high safety and convenient operation, and the weight of a charging device contained by the utility model is 20 grams or so.

Description

The tracking exchage battery pack of built-in miniature charging device

The utility model relates to a kind of battery pack, especially relates to the tracking exchage battery pack of built-in miniature charging device.

The employed battery pack of existing mobile communication equipment (as being commonly called as the mobile phone of portable phone or wireless interspeaker etc.) itself does not have charging device, and needs join charger and could charge to battery outward.And it is bigger as the power consumption of portable phone; often need charging; so using the man-hour regular meeting worry battery halfway of portable phone uses up; in order to save electricity consumption, often shut down, lost the superiority of portable phone; and when going out to go on business; bother greatlyyer, must prepare and carry, use extremely inconvenient with battery or band charger.

The purpose of this utility model provides a kind of tracking exchage battery pack of built-in miniature charging device simple in structure, easy to use.

Be illustrated below in conjunction with accompanying drawing.

Accompanying drawing is the tracking exchage battery pack line map of built-in miniature charging device.

The communication battery pack of built-in miniature charging device is in the tracking exchage battery pack Be mounted with mini charger. In the mini charger circuit, has the frequency conversion of comprising triode BG₁With the frequency changer circuit that variable-frequency transformer B etc. forms, string current limiting capacitor C in frequency changer circuit prime input circuit₁ Also has the sample resistance of comprising R₅、R ₆, switching diode D₇, controllable silicon BG₂The automatic control charging circuit that forms. The mobile communication electricity consumption of built-in miniature charging device Pond group line map connects as follows: attaching plug A two ends, and respectively with current limiting capacitance C₁One end and resistance R₁One end links to each other, current limiting capacitance C₁The other end and resistance R₁The other end respectively with bridge full wave rectifier D₁～D ₄Input link to each other the positive output end of rectifier and variable-frequency transformer B primary coil L₁With feedback coil L₂ Common point 2 points, capacitor C₂One end links to each other, the negative output terminal of rectifier and capacitor C₂The other end, frequency conversion triode BG₁Emitter stage, capacitor C₄One end links to each other, frequency conversion triode BG₁Base stage and capacitor C₃One end, resistance R₂One end links to each other, capacitor C₃The other end and resistance R₂The other end, variable-frequency transformer feedback coil L₂3 link to each other frequency conversion transistor collector and capacitor C₄The other end, variable-frequency transformer B primary coil L₁1 link to each other variable-frequency transformer secondary coil L₃4 points, with diode D₅Positive pole, diode D₆Anodal continuous, diode D₆Negative pole and resistance R₅One end, electrochemical capacitor C₆Positive pole, battery pack E positive pole, battery pack output contact K one end link to each other diode D₅Negative pole and resistance R₃One end links to each other, resistance R₃The other end and resistance R₄One end, electrochemical capacitor C₅Positive pole, controllable silicon BG₂Anode links to each other, resistance R₄The other end and light emitting diode D₈Anodal continuous, electrochemical capacitor C₅Negative pole and variable-frequency transformer B secondary coil L₃5 points, light emitting diode D₈Negative pole, controllable silicon BG₂Negative electrode, capacitor C₇One end, variable resistor R₆One end, electrochemical capacitor C₆Negative pole, the battery pack negative pole, the battery pack output contact K other end links to each other, controllable silicon BG₂Trigger electrode and diode D₇Negative pole, capacitor C₇The other end links to each other, diode D₇Positive pole is with variable resistor R₆The other end, resistance R₅The other end links to each other.

Civil power is through attaching plug A input, through C₁Current limliting is through D₁～D ₄And C₂Obtain a direct current voltage, again by frequency conversion triode BG₁Frequency changer circuit with variable-frequency transformer B etc. forms is converted to the alternating voltage that number picks up KHZ with DC voltage, and the voltage after B level isolation of variable-frequency transformer responded to passes through D₆After the rectification, E charges to battery pack, again through contact K with the battery pack positive and negative electrode Draw, in order to link with portable phone etc.

By resistance R ₅And R ₆The sample circuit of forming is with battery pack E parallel connection, when charging, along with the rising of cell voltage, R ₅, R ₆Middle point voltage also raises, when reaching certain value, and controllable silicon BG ₂Conducting, and make most of charging current, by D ₅And R ₃Go into ground, make the electric current charge into battery have only about 10～20mA,, battery pack is unlikely overcharge and damages to reach the purpose of miniflow charging.

In the prime input circuit, add current limiting capacitance C ₁, make back level frequency changer circuit have following characteristics: (1) is to frequency-changer crystal pipe BG ₁The requirement that reaches variable-frequency transformer B greatly reduces, and has guaranteed the reliability and the fail safe of circuit; (2) need not to add any protective device, short circuit is not afraid of in back level output, is not afraid of open circuit; (3) have and export constant-current characteristics preferably, in a word, circuit is greatly simplified, make easily, cost is low, and in light weight, and volume is little, and contained charging device weight may diminish to about 20 grams, and is safe and reliable, easy to use.

Claims (3)

1. the tracking exchage battery pack of a built-in miniature charging device is characterized in that being mounted with mini charger in the tracking exchage battery pack, has the frequency conversion of comprising triode BG in the mini charger circuit ₁With the frequency changer circuit that variable-frequency transformer B forms, string has the current limliting capacitor C in frequency changer circuit prime input circuit ₁

2. the tracking exchage battery pack of a kind of built-in miniature charging device according to claim 1 is characterized in that having in the said mini charger circuit and comprises sample resistance R ₅, R ₆, switching diode D ₇, controllable silicon BG ₂The automatic control charging circuit of forming.

3. the tracking exchage battery pack of a kind of built-in miniature charging device according to claim 1 and 2 is characterized in that said mini charger circuit is: attaching plug A two ends respectively with current limiting capacitance C ₁One end and resistance R ₁One end links to each other, current limiting capacitance C ₁The other end and resistance R ₁The other end respectively with bridge full wave rectifier D ₁～D ₄Input link to each other the positive output end of rectifier and variable-frequency transformer B primary coil L ₁With feedback coil L ₂Common point 2 points, capacitor C ₂One end links to each other, the negative output terminal of rectifier and capacitor C ₂The other end, frequency conversion triode BG ₁Emitter, capacitor C ₄One end links to each other, frequency conversion triode BG ₁Base stage and capacitor C ₃One end, resistance R ₂One end links to each other, capacitor C ₃The other end and resistance R ₂The other end, variable-frequency transformer feedback coil L ₂3 link to each other frequency conversion transistor collector and capacitor C ₄The other end, variable-frequency transformer B primary coil L ₁1 link to each other variable-frequency transformer secondary coil L ₃4 points, with diode D ₅Positive pole, diode D ₆Anodal continuous, diode D ₆Negative pole and resistance R ₅One end, electrochemical capacitor C ₆Positive pole, battery pack E positive pole, battery pack output contact K one end link to each other diode D ₅Negative pole and resistance R ₃One end links to each other, resistance R ₃The other end and resistance R ₄One end, electrochemical capacitor C ₅Positive pole, controllable silicon BG ₂Anode links to each other, resistance R ₄The other end and light-emitting diode D ₈Anodal continuous, electrochemical capacitor C ₅Negative pole and variable-frequency transformer B secondary coil L ₃5 points, light-emitting diode D ₈Negative pole, controllable silicon BG ₂Negative electrode, capacitor C ₇One end, variable resistor R ₆One end, electrochemical capacitor C ₆Negative pole, the battery pack negative pole, the battery pack output contact K other end links to each other, controllable silicon BG ₂Trigger electrode and diode D ₇Negative pole, capacitor C ₇The other end links to each other, diode D ₇Positive pole is with variable resistor R ₆The other end, resistance R ₅The other end links to each other.

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