CN203205948U - 5V output portable power source - Google Patents

5V output portable power source Download PDF

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Publication number
CN203205948U
CN203205948U CN 201320234460 CN201320234460U CN203205948U CN 203205948 U CN203205948 U CN 203205948U CN 201320234460 CN201320234460 CN 201320234460 CN 201320234460 U CN201320234460 U CN 201320234460U CN 203205948 U CN203205948 U CN 203205948U
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pin
capacitor
resistor
circuit
output
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秦会斌
张京
龚三三
朱挺锋
郁奕飞
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Hangzhou Dianzi University
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Hangzhou Dianzi University
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Abstract

本实用新型公开一种5V输出移动电源。现有移动电源户外使用有局限性，输出功率小，缺少完备保护装置，易造成安全事故。该电源包括锂电池、单片机控制电路、充电电路、短路保护电路、温度和过放保护电路、5V输出电路、电量显示电路；充电电路第一输出端与锂电池输入端电连接、第二输出端与单片机控制电路输入端电连接，短路保护电路输入端与锂电池的输出端电连接、输出端与温度和过放保护电路输入端信号连接，温度和过放保护电路输出端与5V输出电路输入端信号连接，单片机控制电路输出端与电量显示电路输入端信号连接，温度和过放保护电路与单片机控制电路信号连接，锂电池与单片机控制电路电连接。该电源具有多种充电方式，且安全可靠。

Figure 201320234460

The utility model discloses a mobile power supply with 5V output. The existing mobile power supply has limitations in outdoor use, low output power, and lack of complete protection devices, which may easily cause safety accidents. The power supply includes a lithium battery, a single-chip microcomputer control circuit, a charging circuit, a short-circuit protection circuit, a temperature and over-discharge protection circuit, a 5V output circuit, and a power display circuit; the first output end of the charging circuit is electrically connected to the input end of the lithium battery, and the second output end It is electrically connected to the input terminal of the single-chip control circuit, the input terminal of the short-circuit protection circuit is electrically connected to the output terminal of the lithium battery, the output terminal is connected to the signal of the input terminal of the temperature and over-discharge protection circuit, and the output terminal of the temperature and over-discharge protection circuit is connected to the input of the 5V output circuit Terminal signal connection, single-chip control circuit output terminal and power display circuit input signal connection, temperature and over-discharge protection circuit and single-chip control circuit signal connection, lithium battery and single-chip control circuit electrical connection. The power supply has multiple charging methods, and is safe and reliable.

Figure 201320234460

Description

5V output mobile power supply
Technical field
The utility model belongs to the portable power source technical field, relates to a kind of 5V output mobile power supply, is specifically related to a kind ofly be charged as the master with green solar, the portable power source of taking into account vehicle power charging input mode and possessing standard USB5V output.
Background technology
At present, the portable power source on the market is substantially take commercial power charged as main.This portable power source uses certain limitation out of doors.Power output is also less, generally only has about 10W, can only give the small-power electronic product chargings such as mobile phone, MP3, PAD.And the portable power source on a part of market often causes portable power source because of excess Temperature or the excessive security incident that causes of electric current because lacking complete overheated, overcurrent and the protective device such as under-voltage, greatly reduced the useful life of portable power source.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, and a kind of 5V output mobile power supply is provided.
The utility model comprises lithium battery, single chip machine controlling circuit, charging circuit, short-circuit protection circuit, temperature and over-discharge protection circuit, 5V output circuit, electric quantity display circuit; The first output of charging circuit is electrically connected with the input of lithium battery; the second output is electrically connected with the input of single chip machine controlling circuit; the input of short-circuit protection circuit is electrically connected with the output of lithium battery; output and temperature are connected input end signal and are connected with over-discharge protection circuit; temperature is connected output and is connected with the input end signal of 5V output circuit with over-discharge protection circuit; the output of single chip machine controlling circuit is connected with the input end signal of electric quantity display circuit; temperature is connected with the single chip machine controlling circuit signal with over-discharge protection circuit, and lithium battery is electrically connected with single chip machine controlling circuit.
Described charging circuit comprises charging chip U1, P channel MOS field-effect transistor Q1, inductance L 1, diode D1～D2, capacitor C 1～C9, resistance R 1～R7; The 1st pin of charging chip U1 is connected with an end of the 3rd capacitor C 3, the negative pole of the 2nd pin and the first capacitor C 1, one end of the second capacitor C 2, the 4th pin, the 5th pin, one end of the 4th resistance R 4, the 7th pin, the 3rd pin, one end of the 6th capacitor C 6, one end of the 7th capacitor C 7, one end of the 8th capacitor C 8, one end of the 5th resistance R 5, the negative pole of the 4th capacitor C 4, one end of the 5th capacitor C 5, one end of the 3rd resistance R 3 connects rear and ground connection, the 6th pin is connected with the other end of the 4th resistance R 4, the 8th pin is connected with the other end of the 7th capacitor C 7, the 9th pin is connected with an end of the 7th resistance R 7, one end of the 10th pin and the 9th capacitor C 9, one end of the 6th resistance R 6, one end of the 5th resistance R 5 connects, the 11st pin is connected with the other end of the 6th capacitor C 6, one end of the 13rd pin and the first inductance L 1, one end of the first resistance R 1 connects, the other end of the 14th pin and the 9th capacitor C 9, the other end of the 6th resistance R 6, the other end of the first resistance R 1, the positive pole of the 4th capacitor C 4, the other end of the 5th capacitor C 5, one end of the second resistance R 2 is connected with the input of lithium battery 1 after connecting, the positive pole of the 15th pin and the first capacitor C 1, the other end of the second capacitor C 2, the other end of the 3rd capacitor C 3, the drain electrode of P channel MOS field-effect transistor Q1 meets power supply VCC after connecting, and the 16th pin is connected with the grid of P channel MOS field-effect transistor Q1; The source electrode of P channel MOS field-effect transistor Q1 and the anodic bonding of the first diode D1, the negative electrode of the first diode D1 is connected with the negative electrode of the second diode D2, the other end of the first inductance L 1, the plus earth of the second diode D2, the other end of the 7th resistance R 7 is connected with the other end of the 8th capacitor C 8, and the other end of the second resistance R 2 is connected rear output Vbat-Samp as charging circuit with the other end of the 3rd resistance R 3; Described the first diode D1, the second diode D2 are Schottky diode, the first capacitor C 1, the 4th capacitor C 4 are electrochemical capacitor, the 6th capacitor C 6, the 8th capacitor C 8 are ceramic disc capacitor, and the 4th resistance R 4 is negative thermistor, and the model of charging chip U1 is CN3705;
Described lithium battery voltage is 12V, adopts the 3.7V lithium battery that can buy on the existing market, and three joints are in series.
Described short-circuit protection circuit comprises current over-load protector F1; The 1st pin of current over-load protector F1 is connected with the output of lithium battery, and the 2nd pin is as the output Vbat2 of short-circuit protection circuit 4;
Described temperature and over-discharge protection circuit comprise relay R elay, metal-oxide-semiconductor Q2, diode D3, resistance R 8; After being connected with the negative electrode of the 3rd pin, the 3rd diode D3, the 1st pin of relay R elay is connected with the output Vbat2 of short-circuit protection circuit, the 2nd pin is connected with the anode of the 3rd diode D3, the drain electrode of metal-oxide-semiconductor Q2, the 3rd pin is connected with normally-closed contact the 5th pin, the 4th pin is unsettled, and the 5th pin is as the output Vmain of temperature and over-discharge protection circuit; The grid of metal-oxide-semiconductor Q2 is connected with an end of the 8th resistance R 8, source ground, and the other end of the 8th resistance R 8 is as the signal end Control of temperature and over-discharge protection circuit;
Described 5V output circuit comprises the second chip U2, diode D4, inductance L 2, terminals P 1, capacitor C 10～C11, resistance R 9～R12; The 1st pin of the second chip U2 and temperature are connected output Vmain and are connected with over-discharge protection circuit, the 2nd pin is connected with the negative electrode of the 4th diode D4, an end of the second inductance L 2, the 3rd pin is connected rear ground connection with the anode of the 5th pin, the 4th diode D4, the negative pole of the tenth capacitor C 10, an end of the 11 capacitor C 11, and the 4th pin is connected with the other end of the second inductance L 2, the positive pole of the tenth capacitor C 10, the other end of the 11 capacitor C 11, an end of the tenth resistance R 10, an end of the 11 resistance R 11, the 2nd pin of the first terminal P1; The other end of the tenth resistance R 10 is connected with an end of the 9th resistance R 9, the 1st pin of the first terminal P1, the other end of the 11 resistance R 11 is connected with an end of the 12 resistance R 12, the 3rd pin of the first terminal P1, the equal ground connection of the other end of the other end of the 9th resistance R 9, the 12 resistance R 12; The 2nd pin of the first terminal P1 is as the 5V output interface; The model of described the second chip U2 is LM2576;
Described single chip machine controlling circuit comprises singlechip chip U3, operational amplifier U4, resistance R 13～R17, capacitor C 12～C14; The 1st pin of singlechip chip U3 meets power supply VCC, the 2nd pin is as the first output LED100 ﹪ of single chip machine controlling circuit, the 3rd pin is as the second output LED75 ﹪ of single chip machine controlling circuit 2, one end of the 4th pin and the 14 resistance R 14, one end of the 14 capacitor C 14 connects, the 6th pin and temperature are connected signal end Control and are connected with over-discharge protection circuit, one end of the 7th pin and the 12 capacitor C 12, the 1st pin of operational amplifier U4, the 2nd pin of operational amplifier U4 connects, one end of the 10th pin and the 13 capacitor C 13, the 5th pin of operational amplifier U4, the 7th pin of operational amplifier U4 connects, the 11st pin is as the 3rd output LED50 ﹪ of single chip machine controlling circuit, the 12nd pin is as the 4th output LED25 ﹪ of single chip machine controlling circuit, the 14th pin ground connection, the 5th, 8,9,13 pins are unsettled; The 3rd pin of operational amplifier U4 is connected with an end of the 13 resistance R 13, the 4th pin ground connection, and the 6th pin is connected with an end of the 15 resistance R 15, and the 8th pin is connected with lithium battery; The other end of the 13 resistance R 13 is connected with the output Vbat-Samp of charging circuit, the other end of the 15 resistance R 15 is connected with an end of the 16 resistance R 16, an end of the 17 resistance R 17, the other end of the 16 resistance R 16, the other end of the 14 resistance R 14 all meet power supply VCC, the other end of the 12 capacitor C 12, the other end of the 13 capacitor C 13, the other end of the 14 capacitor C 14, the equal ground connection of the other end of the 17 resistance R 17; The model of described singlechip chip U5 is PIC16F616T-I/SL, and the model of the first operational amplifier U6 is LM358, and the 26 resistance R 26 is negative thermistor;
Described electric quantity display circuit comprises resistance R 18～R21, LED 1～LED4; One end of the 18 resistance R 18 is connected with the 4th output LED25 ﹪ of single chip machine controlling circuit, the anodic bonding of the other end and the first LED 1, one end of the 19 resistance R 19 is connected with the 3rd output LED50 ﹪ of single chip machine controlling circuit, the anodic bonding of the other end and the second LED 2, one end of the 20 resistance R 20 is connected with the second output LED75 ﹪ of single chip machine controlling circuit, the anodic bonding of the other end and the 3rd LED 3, one end of the 20 resistance R 20 is connected with the first output LED100 ﹪ of single chip machine controlling circuit 2, the anodic bonding of the other end and the 4th LED 4, the negative electrode of the negative electrode of the first LED 1 and the second LED 2, the negative electrode of the 3rd LED 3, ground connection after the negative electrode of the 4th LED 4 connects.
The beneficial effects of the utility model are:
The utlity model has capable of charging in many ways, both can adopt at present popular clean energy resource solar recharging, effectively alleviated present energy resource nervous, the present situation that environmental pollution is serious, in the situation that be subjected to the natural cause restriction, we can also adopt easily vehicle power charging, convenient outdoor use.In order to realize using solar recharging, adapt to the wider problem of solar panels output voltage, adopt a input range at the lithium cell charging chip of 12～28V, simultaneously its also direct input of compatible vehicle power 12/24V.The utility model adopts the buck circuit topological structure, has solved solar panels output voltage variation problem greatly, has stablized charging current and voltage.The utility model adopts the USB5V output of standard, and peak power can reach 10W, can give the small-power electronic product chargings such as mobile phone, MP3, PAD.In order to make circuit safer, the utility model added overcurrent, overheated, cross and put three kinds of protections, when electric current surpassed 8 A that sets, the overload protective device breaking circuit prevented that electric current from continuing to increase, and carries out overcurrent protection; When temperature surpassed 65 degrees centigrade, the single chip machine controlling circuit breaking circuit prevented that temperature from continuing to raise, and carries out temperature protection; When lithium battery forced down in 8.5 V that sets, singlechip chip U3 turn-offed lithium battery through circuit such as sample circuit, amplifier comparators, stops it and externally continues discharge, carries out Cross prevention.
Description of drawings
Fig. 1 is the system configuration schematic diagram of the utility model circuit;
Fig. 2 is the circuit diagram of charging circuit;
Fig. 3 is the circuit diagram of short-circuit protection circuit;
Fig. 4 is the circuit diagram of temperature and over-discharge protection circuit;
Fig. 5 is the circuit diagram of 5V output circuit;
Fig. 6 is the circuit diagram of single chip machine controlling circuit;
Fig. 7 is the circuit diagram of electric quantity display circuit.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1, the utility model comprises lithium battery 1, single chip machine controlling circuit 2, charging circuit 3, short-circuit protection circuit 4, temperature and over-discharge protection circuit 5,5V output circuit 6, electric quantity display circuit 7; The first output of charging circuit 3 is electrically connected with the input of lithium battery 1; the second output is electrically connected with the input of single chip machine controlling circuit 2; the input of short-circuit protection circuit 4 is electrically connected with the output of lithium battery 1; output is connected with the input end signal that temperature is connected with over-discharge protection circuit; the output that temperature is connected with over-discharge protection circuit is connected with the input end signal of 5V output circuit 6; the output of single chip machine controlling circuit 2 is connected with the input end signal of electric quantity display circuit 7; temperature is connected with over-discharge protection circuit and is connected with single chip machine controlling circuit 2 signals, and lithium battery 1 is electrically connected with single chip machine controlling circuit 2.
As shown in Figure 2, described charging circuit 3 comprises charging chip U1, P channel MOS field-effect transistor Q1, inductance L 1, diode D1～D2, capacitor C 1～C9, resistance R 1～R7; The 1st pin of charging chip U1 is connected with an end of the 3rd capacitor C 3, the negative pole of the 2nd pin and the first capacitor C 1, one end of the second capacitor C 2, the 4th pin, the 5th pin, one end of the 4th resistance R 4, the 7th pin, the 3rd pin, one end of the 6th capacitor C 6, one end of the 7th capacitor C 7, one end of the 8th capacitor C 8, one end of the 5th resistance R 5, the negative pole of the 4th capacitor C 4, one end of the 5th capacitor C 5, one end of the 3rd resistance R 3 connects rear and ground connection, the 6th pin is connected with the other end of the 4th resistance R 4, the 8th pin is connected with the other end of the 7th capacitor C 7, the 9th pin is connected with an end of the 7th resistance R 7, one end of the 10th pin and the 9th capacitor C 9, one end of the 6th resistance R 6, one end of the 5th resistance R 5 connects, the 11st pin is connected with the other end of the 6th capacitor C 6, one end of the 13rd pin and the first inductance L 1, one end of the first resistance R 1 connects, the other end of the 14th pin and the 9th capacitor C 9, the other end of the 6th resistance R 6, the other end of the first resistance R 1, the positive pole of the 4th capacitor C 4, the other end of the 5th capacitor C 5, one end of the second resistance R 2 is connected with the input of lithium battery 1 after connecting, the positive pole of the 15th pin and the first capacitor C 1, the other end of the second capacitor C 2, the other end of the 3rd capacitor C 3, the drain electrode of P channel MOS field-effect transistor Q1 meets power supply VCC after connecting, and the 16th pin is connected with the grid of P channel MOS field-effect transistor Q1; The source electrode of P channel MOS field-effect transistor Q1 and the anodic bonding of the first diode D1, the negative electrode of the first diode D1 is connected with the negative electrode of the second diode D2, the other end of the first inductance L 1, the plus earth of the second diode D2, the other end of the 7th resistance R 7 is connected with the other end of the 8th capacitor C 8, and the other end of the second resistance R 2 is connected rear output Vbat-Samp as charging circuit 3 with the other end of the 3rd resistance R 3; Described the first diode D1, the second diode D2 are Schottky diode, the first capacitor C 1, the 4th capacitor C 4 are electrochemical capacitor, the 6th capacitor C 6, the 8th capacitor C 8 are ceramic disc capacitor, and the 4th resistance R 4 is negative thermistor, and the model of charging chip U1 is CN3705;
Described lithium battery 1 voltage is 12V, adopts the 3.7V lithium battery that can buy on the existing market, and three joints are in series.
As shown in Figure 3, short-circuit protection circuit 4 comprises current over-load protector F1; The 1st pin of current over-load protector F1 is connected with the output of lithium battery, and the 2nd pin is as the output Vbat2 of short-circuit protection circuit 4;
As shown in Figure 4, described temperature and over-discharge protection circuit 5 comprise relay R elay, metal-oxide-semiconductor Q2, diode D3, resistance R 8; After being connected with the negative electrode of the 3rd pin, the 3rd diode D3, the 1st pin of relay R elay is connected with the output Vbat2 of short-circuit protection circuit 4, the 2nd pin is connected with the anode of the 3rd diode D3, the drain electrode of metal-oxide-semiconductor Q2, the 3rd pin is connected with normally-closed contact the 5th pin, the 4th pin is unsettled, and the 5th pin is as the output Vmain of temperature and over-discharge protection circuit 5; The grid of metal-oxide-semiconductor Q2 is connected with an end of the 8th resistance R 8, source ground, and the other end of the 8th resistance R 8 is as the signal end Control of temperature and over-discharge protection circuit 5;
As shown in Figure 5, described 5V output circuit comprises the second chip U2, diode D4, inductance L 2, terminals P 1, capacitor C 10～C11, resistance R 9～R12; The 1st pin of the second chip U2 is connected with the output Vmain that temperature is connected with over-discharge protection circuit, the 2nd pin is connected with the negative electrode of the 4th diode D4, an end of the second inductance L 2, the 3rd pin is connected rear ground connection with the anode of the 5th pin, the 4th diode D4, the negative pole of the tenth capacitor C 10, an end of the 11 capacitor C 11, and the 4th pin is connected with the other end of the second inductance L 2, the positive pole of the tenth capacitor C 10, the other end of the 11 capacitor C 11, an end of the tenth resistance R 10, an end of the 11 resistance R 11, the 2nd pin of the first terminal P1; The other end of the tenth resistance R 10 is connected with an end of the 9th resistance R 9, the 1st pin of the first terminal P1, the other end of the 11 resistance R 11 is connected with an end of the 12 resistance R 12, the 3rd pin of the first terminal P1, the equal ground connection of the other end of the other end of the 9th resistance R 9, the 12 resistance R 12; The 2nd pin of the first terminal P1 is as the 5V output interface; The model of described the second chip U2 is LM2576;
As shown in Figure 6, described single chip machine controlling circuit 2 comprises singlechip chip U3, operational amplifier U4, resistance R 13～R17, capacitor C 12～C14; The 1st pin of singlechip chip U3 meets power supply VCC, the 2nd pin is as the first output LED100 ﹪ of single chip machine controlling circuit 2, the 3rd pin is as the second output LED75 ﹪ of single chip machine controlling circuit 2, one end of the 4th pin and the 14 resistance R 14, one end of the 14 capacitor C 14 connects, the 6th pin is connected with the signal end Control that temperature is connected with over-discharge protection circuit, one end of the 7th pin and the 12 capacitor C 12, the 1st pin of operational amplifier U4, the 2nd pin of operational amplifier U4 connects, one end of the 10th pin and the 13 capacitor C 13, the 5th pin of operational amplifier U4, the 7th pin of operational amplifier U4 connects, the 11st pin is as the 3rd output LED50 ﹪ of single chip machine controlling circuit 2, the 12nd pin is as the 4th output LED25 ﹪ of single chip machine controlling circuit 2, the 14th pin ground connection, the 5th, 8,9,13 pins are unsettled; The 3rd pin of operational amplifier U4 is connected with an end of the 13 resistance R 13, the 4th pin ground connection, and the 6th pin is connected with an end of the 15 resistance R 15, and the 8th pin is electrically connected with lithium battery 1; The other end of the 13 resistance R 13 is connected with the output Vbat-Samp of charging circuit 3, the other end of the 15 resistance R 15 is connected with an end of the 16 resistance R 16, an end of the 17 resistance R 17, the other end of the 16 resistance R 16, the other end of the 14 resistance R 14 all meet power supply VCC, the other end of the 12 capacitor C 12, the other end of the 13 capacitor C 13, the other end of the 14 capacitor C 14, the equal ground connection of the other end of the 17 resistance R 17; The model of described singlechip chip U5 is PIC16F616T-I/SL, and the model of the first operational amplifier U6 is LM358, and the 26 resistance R 26 is negative thermistor;
As shown in Figure 7, described electric quantity display circuit 7 comprises resistance R 18～R21, LED 1～LED4; One end of the 18 resistance R 18 is connected with the 4th output LED25 ﹪ of single chip machine controlling circuit 2, the anodic bonding of the other end and the first LED 1, one end of the 19 resistance R 19 is connected with the 3rd output LED50 ﹪ of single chip machine controlling circuit 2, the anodic bonding of the other end and the second LED 2, one end of the 20 resistance R 20 is connected with the second output LED75 ﹪ of single chip machine controlling circuit 2, the anodic bonding of the other end and the 3rd LED 3, one end of the 20 resistance R 20 is connected with the first output LED100 ﹪ of single chip machine controlling circuit 2, the anodic bonding of the other end and the 4th LED 4, the negative electrode of the negative electrode of the first LED 1 and the second LED 2, the negative electrode of the 3rd LED 3, ground connection after the negative electrode of the 4th LED 4 connects.
The course of work:
When the course of work of temperature and over-discharge protection circuit 5 surpassed 65 degrees centigrade for the temperature of circuit board when charge to electronic product, singlechip chip U3 understood control relay shutoff output circuit, and circuit board is quit work, and prevents that temperature from further raising.Single chip machine controlling circuit 2 automatic operations when temperature is got back to below 65 degrees centigrade.When the dump energy of lithium battery 1 was lower than 8.5V, it is excessively low that single chip machine controlling circuit 2 detects lithium battery 1 dump energy by the sampling resistor network, and automatic control relay turn-offs discharge circuit, prevents that the situation that lithium battery 1 is put excessively from occuring.
Add the temperature of negative thermistor R4 when detecting to lithium battery 1 charging in the charging circuit 3, when temperature surpassed 45 degrees centigrade, charging circuit 3 quit work, and prevents that temperature from further raising, and continued charging when time below the drop in temperature to 45 degree centigrade.
Short-circuit protection circuit 4 adopts current over-load protector F1, and when circuital current surpassed 10 amperes (A), circuit was cut off in the automatic tripping of current over-load protector F1 meeting, prevents excessive circuit board and the lithium battery 1 of burning of short circuit or electric current; Can press the button of current over-load protector F1 after the unshorting fault, the circuit normal operation.
The course of work of 5V output circuit is that the 1st pin of the second chip U2 is connected with the output Vmain that temperature is connected with over-discharge protection circuit, for the second chip U2 provides voltage, through BUCK topology reduction voltage circuit, by the 2nd pin of the first terminal P1 output 5V-OUT as the 5V output circuit, the model of described the second chip U2 is LM2576; Described 5V output 5V-OUT uses USB interface, and the use for electronic products charging wire is connected to USB interface, just can give the electronic product chargings such as mobile phone, MP/3/4/5.
The course of work of electric quantity display circuit is lighted the first LED 1 for when the utility model is charged to 25 ﹪; When the utility model is charged to 50 ﹪, light the second LED 2, and the first LED 1 is permanent bright; When the utility model is charged to 75 ﹪, light the 3rd LED 3, and the first LED 1, the second LED 2 are permanent bright; When the utility model is charged to 100 ﹪, light the 4th LED 4, and the first LED 1, the second LED 2, the 3rd LED 3 are permanent bright.

Claims (1)

1.5V输出移动电源，其特征在于该移动电源包括锂电池、单片机控制电路、充电电路、短路保护电路、温度和过放保护电路、5V输出电路、电量显示电路；充电电路的第一输出端与锂电池的输入端电连接、第二输出端与单片机控制电路的输入端电连接，短路保护电路的输入端与锂电池的输出端电连接、输出端与温度和过放保护电路的输入端信号连接，温度和过放保护电路的输出端与5V输出电路的输入端信号连接，单片机控制电路的输出端与电量显示电路的输入端信号连接，温度和过放保护电路与单片机控制电路信号连接，锂电池与单片机控制电路电连接； 1.5V output mobile power supply is characterized in that the mobile power supply includes a lithium battery, a single-chip microcomputer control circuit, a charging circuit, a short circuit protection circuit, a temperature and over-discharge protection circuit, a 5V output circuit, and a power display circuit; the first output terminal of the charging circuit and The input end of the lithium battery is electrically connected, the second output end is electrically connected to the input end of the single-chip microcomputer control circuit, the input end of the short-circuit protection circuit is electrically connected to the output end of the lithium battery, and the output end is connected to the temperature and the input end signal of the over-discharge protection circuit. Connection, the output end of the temperature and over-discharge protection circuit is connected to the input end signal of the 5V output circuit, the output end of the single-chip microcomputer control circuit is connected to the input end signal of the power display circuit, the temperature and over-discharge protection circuit is connected to the single-chip microcomputer control circuit signal, The lithium battery is electrically connected to the single-chip microcomputer control circuit; 所述的充电电路包括充电芯片U1、P沟道MOS场效应晶体管Q1、电感L1、二极管D1～D2，电容C1～C9，电阻R1～R7；充电芯片U1的第1引脚与第三电容C3的一端连接，第2脚与第一电容C1的负极、第二电容C2的一端、第4引脚、第5引脚、第四电阻R4的一端、第7引脚、第3引脚、第六电容C6的一端、第七电容C7的一端、第八电容C8的一端、第五电阻R5的一端、第四电容C4的负极、第五电容C5的一端、第三电阻R3的一端连接后并接地，第6引脚与第四电阻R4的另一端连接，第8引脚与第七电容C7的另一端连接，第9引脚与第七电阻R7的一端连接，第10引脚与第九电容C9的一端、第六电阻R6的一端、第五电阻R5的一端连接，第11引脚与第六电容C6的另一端连接，第13引脚与第一电感L1的一端、第一电阻R1的一端连接，第14引脚与第九电容C9的另一端、第六电阻R6的另一端、第一电阻R1的另一端、第四电容C4的正极、第五电容C5的另一端、第二电阻R2的一端连接后与锂电池1的输入端连接，第15引脚与第一电容C1的正极、第二电容C2的另一端、第三电容C3的另一端、P沟道MOS场效应晶体管Q1的漏极连接后接电源VCC，第16引脚与P沟道MOS场效应晶体管Q1的栅极连接；P沟道MOS场效应晶体管Q1的源极与第一二极管D1的阳极连接，第一二极管D1的阴极与第二二极管D2的阴极、第一电感L1的另一端连接，第二二极管D2的阳极接地，第七电阻R7的另一端与第八电容C8的另一端连接，第二电阻R2的另一端与第三电阻R3的另一端连接后作为充电电路的输出端Vbat-Samp；所述的第一二极管D1、第二二极管D2为肖特基二极管，第一电容C1、第四电容C4为电解电容，第六电容C6、第八电容C8为瓷片电容，第四电阻R4为负热敏电阻，充电芯片U1的型号为CN3705； The charging circuit includes a charging chip U1, a P-channel MOS field effect transistor Q1, an inductor L1, diodes D1-D2, capacitors C1-C9, and resistors R1-R7; the first pin of the charging chip U1 and the third capacitor C3 One end of the connection, the second pin is connected with the negative pole of the first capacitor C1, one end of the second capacitor C2, the fourth pin, the fifth pin, one end of the fourth resistor R4, the seventh pin, the third pin, the first One end of the sixth capacitor C6, one end of the seventh capacitor C7, one end of the eighth capacitor C8, one end of the fifth resistor R5, the negative pole of the fourth capacitor C4, one end of the fifth capacitor C5, and one end of the third resistor R3 are connected and connected Grounding, the 6th pin is connected to the other end of the fourth resistor R4, the 8th pin is connected to the other end of the seventh capacitor C7, the 9th pin is connected to one end of the seventh resistor R7, the 10th pin is connected to the ninth One end of the capacitor C9, one end of the sixth resistor R6, and one end of the fifth resistor R5 are connected, the 11th pin is connected to the other end of the sixth capacitor C6, the 13th pin is connected to one end of the first inductor L1, the first resistor R1 One end of the 14th pin is connected to the other end of the ninth capacitor C9, the other end of the sixth resistor R6, the other end of the first resistor R1, the positive pole of the fourth capacitor C4, the other end of the fifth capacitor C5, the second One end of the resistor R2 is connected to the input end of the lithium battery 1, and the 15th pin is connected to the positive electrode of the first capacitor C1, the other end of the second capacitor C2, the other end of the third capacitor C3, and the P-channel MOS field effect transistor The drain of Q1 is connected to the power supply VCC, the 16th pin is connected to the gate of the P-channel MOS field-effect transistor Q1; the source of the P-channel MOS field-effect transistor Q1 is connected to the anode of the first diode D1, The cathode of the first diode D1 is connected to the cathode of the second diode D2 and the other end of the first inductor L1, the anode of the second diode D2 is grounded, and the other end of the seventh resistor R7 is connected to the eighth capacitor C8. The other end is connected, and the other end of the second resistor R2 is connected to the other end of the third resistor R3 as the output terminal Vbat-Samp of the charging circuit; the first diode D1 and the second diode D2 are Schott The base diode, the first capacitor C1 and the fourth capacitor C4 are electrolytic capacitors, the sixth capacitor C6 and the eighth capacitor C8 are ceramic capacitors, the fourth resistor R4 is a negative thermistor, and the model of the charging chip U1 is CN3705; 所述的锂电池电压为12V，采用现有市场上可以购买到的3.7V锂电池，三节串联而成； Described lithium battery voltage is 12V, adopts the 3.7V lithium battery that can buy on the existing market, and three sections are connected in series; 所述的短路保护电路包括电流过载保护器F1；电流过载保护器F1的第1引脚与锂电池的输出端连接，第2引脚作为短路保护电路4的输出端Vbat2； The short circuit protection circuit includes a current overload protector F1; the first pin of the current overload protector F1 is connected to the output terminal of the lithium battery, and the second pin is used as the output terminal Vbat2 of the short circuit protection circuit 4; 所述的温度和过放保护电路包括继电器Relay、MOS管Q2、二极管D3、电阻R8；继电器Relay的第1引脚与第3引脚、第三二极管D3的阴极连接后与短路保护电路的输出端Vbat2连接，第2引脚与第三二极管D3的阳极、MOS管Q2的漏极连接，第3引脚与常闭触点第5引脚连接，第4引脚悬空，第5引脚作为温度和过放保护电路的输出端Vmain；MOS管Q2的栅极与第八电阻R8的一端连接、源极接地，第八电阻R8的另一端作为温度和过放保护电路的信号端Control； The temperature and over-discharge protection circuit includes a relay Relay, a MOS tube Q2, a diode D3, and a resistor R8; the first pin of the relay Relay is connected to the third pin, and the cathode of the third diode D3 is connected to the short-circuit protection circuit The output terminal Vbat2 is connected, the second pin is connected to the anode of the third diode D3 and the drain of the MOS transistor Q2, the third pin is connected to the fifth pin of the normally closed contact, the fourth pin is suspended, and the Pin 5 is used as the output terminal Vmain of the temperature and over-discharge protection circuit; the gate of the MOS transistor Q2 is connected to one end of the eighth resistor R8, the source is grounded, and the other end of the eighth resistor R8 is used as the signal of the temperature and over-discharge protection circuit Terminal Control; 所述的5V输出电路包括第二芯片U2、二极管D4、电感L2、端子P1、电容C10～C11，电阻R9～R12；第二芯片U2的第1引脚与温度和过放保护电路的输出端Vmain连接，第2引脚与第四二极管D4的阴极、第二电感L2的一端连接，第3引脚与第5引脚、第四二极管D4的阳极、第十电容C10的负极、第十一电容C11的一端连接后接地，第4引脚与第二电感L2的另一端、第十电容C10的正极、第十一电容C11的另一端、第十电阻R10的一端、第十一电阻R11的一端、第一端子P1的第2引脚连接；第十电阻R10的另一端与第九电阻R9的一端、第一端子P1的第1引脚连接，第十一电阻R11的另一端与第十二电阻R12的一端、第一端子P1的第3引脚连接，第九电阻R9的另一端、第十二电阻R12的另一端均接地；第一端子P1的第2引脚作为5V输出接口；所述的第二芯片U2的型号为LM2576； The 5V output circuit includes a second chip U2, a diode D4, an inductor L2, a terminal P1, capacitors C10-C11, and resistors R9-R12; the first pin of the second chip U2 is connected to the output end of the temperature and over-discharge protection circuit Vmain is connected, the second pin is connected to the cathode of the fourth diode D4, one end of the second inductor L2, the third pin is connected to the fifth pin, the anode of the fourth diode D4, and the negative pole of the tenth capacitor C10 1. One end of the eleventh capacitor C11 is connected to ground, the fourth pin is connected to the other end of the second inductor L2, the positive pole of the tenth capacitor C10, the other end of the eleventh capacitor C11, one end of the tenth resistor R10, the tenth One end of a resistor R11 is connected to the second pin of the first terminal P1; the other end of the tenth resistor R10 is connected to one end of the ninth resistor R9 and the first pin of the first terminal P1, and the other end of the eleventh resistor R11 One end is connected to one end of the twelfth resistor R12 and the third pin of the first terminal P1, the other end of the ninth resistor R9 and the other end of the twelfth resistor R12 are both grounded; the second pin of the first terminal P1 serves as 5V output interface; the model of the second chip U2 is LM2576; 所述的单片机控制电路包括单片机芯片U3、运算放大器U4、电阻R13～R17、电容C12～C14；单片机芯片U3的第1引脚接电源VCC，第2引脚作为单片机控制电路的第一输出端LED100﹪，第3引脚作为单片机控制电路2的第二输出端LED75﹪，第4引脚与第十四电阻R14的一端、第十四电容C14的一端连接，第6引脚与温度和过放保护电路的信号端Control连接，第7引脚与第十二电容C12的一端、运算放大器U4的第1引脚、运算放大器U4的第2引脚连接，第10引脚与第十三电容C13的一端、运算放大器U4的第5引脚、运算放大器U4的第7引脚连接，第11引脚作为单片机控制电路的第三输出端LED50﹪，第12引脚作为单片机控制电路的第四输出端LED25﹪，第14引脚接地，第5、8、9、13引脚悬空；运算放大器U4的第3引脚与第十三电阻R13的一端连接，第4引脚接地，第6引脚与第十五电阻R15的一端连接，第8引脚与锂电池电连接；第十三电阻R13的另一端与充电电路的输出端Vbat-Samp连接，第十五电阻R15的另一端与第十六电阻R16的一端、第十七电阻R17的一端连接，第十六电阻R16的另一端、第十四电阻R14的另一端均接电源VCC，第十二电容C12的另一端、第十三电容C13的另一端、第十四电容C14的另一端、第十七电阻R17的另一端均接地；所述的单片机芯片U5的型号为PIC16F616T-I/SL，第一运算放大器U6的型号为LM358，第二十六电阻R26为负热敏电阻； The single-chip microcomputer control circuit includes a single-chip microcomputer chip U3, an operational amplifier U4, resistors R13-R17, and capacitors C12-C14; the first pin of the single-chip microcomputer chip U3 is connected to the power supply VCC, and the second pin is used as the first output terminal of the single-chip microcomputer control circuit LED100﹪, the 3rd pin is used as the second output terminal LED75﹪ of the single-chip microcomputer control circuit 2, the 4th pin is connected with one end of the fourteenth resistor R14 and one end of the fourteenth capacitor C14, and the sixth pin is connected with temperature and over The signal terminal Control of the amplifier protection circuit is connected, the 7th pin is connected with one end of the twelfth capacitor C12, the 1st pin of the operational amplifier U4, and the 2nd pin of the operational amplifier U4, and the 10th pin is connected with the thirteenth capacitor One end of C13, the 5th pin of the operational amplifier U4, and the 7th pin of the operational amplifier U4 are connected, the 11th pin is used as the third output terminal LED50﹪ of the single-chip microcomputer control circuit, and the 12th pin is used as the fourth output terminal of the single-chip microcomputer control circuit The output terminal LED25﹪, the 14th pin is grounded, the 5th, 8th, 9th, and 13th pins are suspended; the 3rd pin of the operational amplifier U4 is connected to one end of the thirteenth resistor R13, the 4th pin is grounded, and the 6th pin The pin is connected to one end of the fifteenth resistor R15, and the eighth pin is electrically connected to the lithium battery; the other end of the thirteenth resistor R13 is connected to the output terminal Vbat-Samp of the charging circuit, and the other end of the fifteenth resistor R15 is connected to the first One end of the sixteenth resistor R16 and one end of the seventeenth resistor R17 are connected, the other end of the sixteenth resistor R16 and the other end of the fourteenth resistor R14 are connected to the power supply VCC, the other end of the twelfth capacitor C12, the thirteenth The other end of the capacitor C13, the other end of the fourteenth capacitor C14, and the other end of the seventeenth resistor R17 are all grounded; the model of the single-chip microcomputer chip U5 is PIC16F616T-I/SL, and the model of the first operational amplifier U6 is LM358 , the twenty-sixth resistor R26 is a negative thermistor; 所述的电量显示电路包括电阻R18～R21、发光二极管LED1～LED4；第十八电阻R18的一端与单片机控制电路的第四输出端LED25﹪连接、另一端与第一发光二极管LED1的阳极连接，第十九电阻R19的一端与单片机控制电路的第三输出端LED50﹪连接、另一端与第二发光二极管LED2的阳极连接，第二十电阻R20的一端与单片机控制电路的第二输出端LED75﹪连接、另一端与第三发光二极管LED3的阳极连接，第二十电阻R20的一端与单片机控制电路2的第一输出端LED100﹪连接、另一端与第四发光二极管LED4的阳极连接，第一发光二极管LED1的阴极与第二发光二极管LED2的阴极、第三发光二极管LED3的阴极、第四发光二极管LED4的阴极连接后接地。 The power display circuit includes resistors R18-R21 and light-emitting diodes LED1-LED4; one end of the eighteenth resistor R18 is connected to the fourth output terminal LED25﹪ of the single-chip microcomputer control circuit, and the other end is connected to the anode of the first light-emitting diode LED1, One end of the nineteenth resistor R19 is connected to the third output terminal LED50﹪ of the single-chip microcomputer control circuit, the other end is connected to the anode of the second light-emitting diode LED2, and one end of the twentieth resistor R20 is connected to the second output terminal LED75﹪ of the single-chip microcomputer control circuit connected, the other end is connected with the anode of the third light emitting diode LED3, one end of the twentieth resistor R20 is connected with the first output end LED100% of the single-chip microcomputer control circuit 2, and the other end is connected with the anode of the fourth light emitting diode LED4, the first light emitting The cathode of the diode LED1 is connected to the cathode of the second light emitting diode LED2, the cathode of the third light emitting diode LED3, and the cathode of the fourth light emitting diode LED4, and then grounded.
CN 201320234460 2013-05-02 2013-05-02 5V output portable power source Expired - Lifetime CN203205948U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103219778A (en) * 2013-05-02 2013-07-24 杭州电子科技大学 A 5V output mobile power supply
CN110336357A (en) * 2019-07-15 2019-10-15 浙江德创智能科技有限公司 A new lithium battery protection board

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103219778A (en) * 2013-05-02 2013-07-24 杭州电子科技大学 A 5V output mobile power supply
CN103219778B (en) * 2013-05-02 2014-11-05 杭州电子科技大学 5V output mobile power supply
CN110336357A (en) * 2019-07-15 2019-10-15 浙江德创智能科技有限公司 A new lithium battery protection board

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