CN204465104U - A kind of portable set charging power source circuit - Google Patents
A kind of portable set charging power source circuit Download PDFInfo
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- CN204465104U CN204465104U CN201520224629.4U CN201520224629U CN204465104U CN 204465104 U CN204465104 U CN 204465104U CN 201520224629 U CN201520224629 U CN 201520224629U CN 204465104 U CN204465104 U CN 204465104U
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Abstract
The utility model discloses a kind of portable set charging power source circuit, comprise input selection circuit module, charge management circuit module, battery output voltage stabilizing circuit module and external power supply Voltage stabilizing module.The utility model is by using input selection circuit module, and make circuit have two kinds of powering modes, external power supply can be adopted to power, also can be powered by built-in lithium battery, the final output voltage of system is 3V, and when both exist simultaneously, prioritizing selection external power supply is powered.There are two kinds of external power interfaces, power supply adaptor and USB interface, when both use simultaneously, power supply adaptor has priority, adopt this kind of mode, greatly extend the useful life of lithium battery, native system can be widely used in various portable set, has stronger practicality and good market prospects.
Description
Technical field
The utility model relates to a kind of charging power source circuit, specifically a kind of portable set charging power source circuit.
Background technology
Along with the development of the portable sets such as mobile phone, people are also more and more higher for the electrical demand of the portable sets such as mobile phone, be reproduced in battery technology when there is no a very big breakthrough, the portable set charge power supplies such as charger baby are arisen at the historic moment, but the charger baby on existing market, while connection power supply is to charger baby charging, by charger baby to portable set chargings such as mobile phones, the processing mode of charger baby is: first to charger baby charging, then export to the portable sets such as mobile phone by charger baby.This mode significant losses life-span of charger baby built-in lithium battery.
Utility model content
The purpose of this utility model is to provide a kind of and makes lithium cell charging life and the low portable set charging power source circuit of cost, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of portable set charging power source circuit, comprise input selection circuit module, charge management circuit module, battery output voltage stabilizing circuit module and external power supply Voltage stabilizing module, described input selection circuit module comprises PMOS Q1 and diode D1, described charge management circuit module comprises chip U2 and resistance R1, described battery output voltage stabilizing circuit module comprises chip U3 and resistance R3, and described external power supply Voltage stabilizing module comprises three terminal regulator U1 and electric capacity C1.
Described three terminal regulator U1 pin 2 connects electric capacity C4 respectively, electric capacity C2, power supply VCC, diode D2 negative pole and charging inlet J2 pin 1, charging inlet J2 pin 2 ground connection, described three terminal regulator U1 pin 1 connects the electric capacity C2 other end respectively, the electric capacity C4 other end, electric capacity C1 and electric capacity C3 ground connection, three terminal regulator U1 pin 3 connects the electric capacity C1 other end respectively, the electric capacity C3 other end, diode D1 negative pole, electric capacity C5, electric capacity C9, the D pole of PMOS Q1, resistance R1, chip U2 pin 4 and chip U2 pin 8, the described electric capacity C5 other end connects the electric capacity C9 other end and ground connection, the described resistance R1 other end is connecting luminous diode LED1 positive pole and LED 2 positive pole respectively, LED 2 negative pole connects chip U2 pin 7, chip U2 pin 6 connecting luminous diode LED1 negative pole, chip U2 pin 3 ground connection, chip U2 pin 2 connects earth resistance R4, and chip U2 pin 1 connects electric capacity C7 respectively, electric capacity C10 and lithium battery E negative pole ground connection, chip U2 pin 5 connects the electric capacity C7 other end respectively, the electric capacity C10 other end, lithium battery E positive pole, electric capacity C8, chip U3 pin 1 and chip U3 pin 3, chip U3 pin 2 ground connection, described electric capacity C8 other end contact resistance R3, the resistance R3 other end connects electric capacity C6 and electric capacity C11 respectively, and the electric capacity C11 other end connects the electric capacity C6 other end respectively, the S pole of diode D2 positive pole and chip U3 pin 5, described PMOS Q1 connects USB interface pin 1, USB interface pin 4 ground connection, and the G pole of described PMOS Q1 connects earth resistance R2 respectively, power connection J1 and diode D1 positive pole, power connection J1 other end ground connection.
As further program of the utility model: described three terminal regulator U1 model is SPX1117, described chip U2 model is CN3052, and described chip U3 model is TPS76333.
As further program of the utility model: described power supply VCC voltage is 3.3V, for three terminal regulator U1 powers.
As the utility model further scheme: send green glow when described LED 1 works, when described LED 2 works, send ruddiness.
Compared with prior art, the beneficial effects of the utility model are: the utility model is by using input selection circuit module, circuit is made to have two kinds of powering modes, external power supply can be adopted to power, also can be powered by built-in lithium battery, the final output voltage of system is 3V, and when both exist simultaneously, prioritizing selection external power supply is powered.There are two kinds of external power interfaces, power supply adaptor and USB interface, when both use simultaneously, power supply adaptor has priority, adopt this kind of mode, greatly extend the useful life of lithium battery, native system can be widely used in various portable set, has stronger practicality and good market prospects.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of portable set charging power source circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of portable set charging power source circuit, comprise input selection circuit module, charge management circuit module, battery output voltage stabilizing circuit module and external power supply Voltage stabilizing module, input selection circuit module comprises PMOS Q1 and diode D1, charge management circuit module comprises chip U2 and resistance R1, and battery output voltage stabilizing circuit module comprises chip U3 and resistance R3, and external power supply Voltage stabilizing module comprises three terminal regulator U1 and electric capacity C1.
Three terminal regulator U1 pin 2 connects electric capacity C4 respectively, electric capacity C2, power supply VCC, diode D2 negative pole and charging inlet J2 pin 1, charging inlet J2 pin 2 ground connection, three terminal regulator U1 pin 1 connects the electric capacity C2 other end respectively, the electric capacity C4 other end, electric capacity C1 and electric capacity C3 ground connection, three terminal regulator U1 pin 3 connects the electric capacity C1 other end respectively, the electric capacity C3 other end, diode D1 negative pole, electric capacity C5, electric capacity C9, the D pole of PMOS Q1, resistance R1, chip U2 pin 4 and chip U2 pin 8, the electric capacity C5 other end connects the electric capacity C9 other end and ground connection, the resistance R1 other end is connecting luminous diode LED1 positive pole and LED 2 positive pole respectively, LED 2 negative pole connects chip U2 pin 7, chip U2 pin 6 connecting luminous diode LED1 negative pole, chip U2 pin 3 ground connection, chip U2 pin 2 connects earth resistance R4, and chip U2 pin 1 connects electric capacity C7 respectively, electric capacity C10 and lithium battery E negative pole ground connection, chip U2 pin 5 connects the electric capacity C7 other end respectively, the electric capacity C10 other end, lithium battery E positive pole, electric capacity C8, chip U3 pin 1 and chip U3 pin 3, chip U3 pin 2 ground connection, electric capacity C8 other end contact resistance R3, the resistance R3 other end connects electric capacity C6 and electric capacity C11 respectively, and the electric capacity C11 other end connects the electric capacity C6 other end respectively, the S pole of diode D2 positive pole and chip U3 pin 5, PMOS Q1 connects USB interface pin 1, USB interface pin 4 ground connection, and the G pole of PMOS Q1 connects earth resistance R2 respectively, power connection J1 and diode D1 positive pole, power connection J1 other end ground connection.
Three terminal regulator U1 model is SPX1117, and chip U2 model is CN3052, and chip U3 model is TPS76333.
Power supply VCC voltage is 3.3V, for three terminal regulator U1 powers.
LED 1 sends green glow when working, and sends ruddiness when LED 2 works.
Operation principle of the present utility model is: for input selection circuit module, and when only having power supply adaptor to power, PMOS Q1 ends, input voltage is after diode D1 step-down, power to late-class circuit, diode D1 adopts Schottky diode, and conduction voltage drop is about 0.3V; When only having USB to power, PMOS Q1 conducting, diode D1 is used for preventing USB interface from consuming electric energy by resistance R2; When both exist simultaneously, PMOS Q1 ends, and power supply adaptor input voltage, after D1 step-down, is powered to late-class circuit.
Charge management circuit module adopts CN3052 lithium cell charging chip, and chip CN3052 can carry out constant current or constant voltage charge to single lithium battery, only needs few peripheral component, programmable charging current, and constant voltage charge voltage is 4.2V.And meet usb bus technical specification, be very suitable for the field of portable use.Only need little outer member, output voltage 4.2V, precision can reach 1%, and chip CN3052 pin 8 is Enable Pin, and high level is effective.Green LED 1 is used to indicate battery and whether is in malfunction, and red LED 2 is used to indicate whether be in charged state, and resistance R4 is for setting constant current charge electric current.
During because of powered battery, output current is limited, and when there being external power supply, voltage regulation way adopts SPX1117 three terminal regulator to carry out voltage stabilizing, and output current can reach 800mA.Alternating current can become direct current through over commutation, but its voltage is unstable: the change of supply power voltage or the change of electricity consumption electric current, can cause the fluctuation of supply voltage.
Claims (4)
1. a portable set charging power source circuit, comprise input selection circuit module, charge management circuit module, battery output voltage stabilizing circuit module and external power supply Voltage stabilizing module, it is characterized in that, described input selection circuit module comprises PMOS Q1 and diode D1, described charge management circuit module comprises chip U2 and resistance R1, described battery output voltage stabilizing circuit module comprises chip U3 and resistance R3, and described external power supply Voltage stabilizing module comprises three terminal regulator U1 and electric capacity C1;
Described three terminal regulator U1 pin 2 connects electric capacity C4 respectively, electric capacity C2, power supply VCC, diode D2 negative pole and charging inlet J2 pin 1, charging inlet J2 pin 2 ground connection, described three terminal regulator U1 pin 1 connects the electric capacity C2 other end respectively, the electric capacity C4 other end, electric capacity C1 and electric capacity C3 ground connection, three terminal regulator U1 pin 3 connects the electric capacity C1 other end respectively, the electric capacity C3 other end, diode D1 negative pole, electric capacity C5, electric capacity C9, the D pole of PMOS Q1, resistance R1, chip U2 pin 4 and chip U2 pin 8, the described electric capacity C5 other end connects the electric capacity C9 other end and ground connection, the described resistance R1 other end is connecting luminous diode LED1 positive pole and LED 2 positive pole respectively, LED 2 negative pole connects chip U2 pin 7, chip U2 pin 6 connecting luminous diode LED1 negative pole, chip U2 pin 3 ground connection, chip U2 pin 2 connects earth resistance R4, and chip U2 pin 1 connects electric capacity C7 respectively, electric capacity C10 and lithium battery E negative pole ground connection, chip U2 pin 5 connects the electric capacity C7 other end respectively, the electric capacity C10 other end, lithium battery E positive pole, electric capacity C8, chip U3 pin 1 and chip U3 pin 3, chip U3 pin 2 ground connection, described electric capacity C8 other end contact resistance R3, the resistance R3 other end connects electric capacity C6 and electric capacity C11 respectively, and the electric capacity C11 other end connects the electric capacity C6 other end respectively, the S pole of diode D2 positive pole and chip U3 pin 5, described PMOS Q1 connects USB interface pin 1, USB interface pin 4 ground connection, and the G pole of described PMOS Q1 connects earth resistance R2 respectively, power connection J1 and diode D1 positive pole, power connection J1 other end ground connection.
2. portable set charging power source circuit according to claim 1, is characterized in that, described three terminal regulator U1 model is SPX1117, and described chip U2 model is CN3052, and described chip U3 model is TPS76333.
3. portable set charging power source circuit according to claim 1, is characterized in that, described power supply VCC voltage is 3.3V, for three terminal regulator U1 powers.
4. portable set charging power source circuit according to claim 1, is characterized in that, sends green glow when described LED 1 works, and sends ruddiness when described LED 2 works.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520224629.4U CN204465104U (en) | 2015-04-08 | 2015-04-08 | A kind of portable set charging power source circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520224629.4U CN204465104U (en) | 2015-04-08 | 2015-04-08 | A kind of portable set charging power source circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204465104U true CN204465104U (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520224629.4U Expired - Fee Related CN204465104U (en) | 2015-04-08 | 2015-04-08 | A kind of portable set charging power source circuit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107508373A (en) * | 2017-09-11 | 2017-12-22 | 深圳鼎智通讯股份有限公司 | A kind of backup battery switching circuit for POS |
| CN107895991A (en) * | 2017-08-30 | 2018-04-10 | 南京理工大学 | A kind of radio sensing network node electric power system |
| CN110061314A (en) * | 2019-03-15 | 2019-07-26 | 山东超越数控电子股份有限公司 | A kind of guard method that energy storage device is idle for a long time, system and operation terminal |
| CN112288069A (en) * | 2020-10-29 | 2021-01-29 | 努比亚技术有限公司 | Price tag base station power supply circuit and price tag base station |
| CN112636449A (en) * | 2020-11-18 | 2021-04-09 | 努比亚技术有限公司 | Multi-power supply circuit and power supply device |
| CN112910031A (en) * | 2021-01-18 | 2021-06-04 | 江苏航空职业技术学院 | Low-power wireless charging power supply system circuit |
-
2015
- 2015-04-08 CN CN201520224629.4U patent/CN204465104U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107895991A (en) * | 2017-08-30 | 2018-04-10 | 南京理工大学 | A kind of radio sensing network node electric power system |
| CN107508373A (en) * | 2017-09-11 | 2017-12-22 | 深圳鼎智通讯股份有限公司 | A kind of backup battery switching circuit for POS |
| CN110061314A (en) * | 2019-03-15 | 2019-07-26 | 山东超越数控电子股份有限公司 | A kind of guard method that energy storage device is idle for a long time, system and operation terminal |
| CN112288069A (en) * | 2020-10-29 | 2021-01-29 | 努比亚技术有限公司 | Price tag base station power supply circuit and price tag base station |
| CN112288069B (en) * | 2020-10-29 | 2024-01-09 | 努比亚技术有限公司 | Price tag base station power supply circuit and price tag base station |
| CN112636449A (en) * | 2020-11-18 | 2021-04-09 | 努比亚技术有限公司 | Multi-power supply circuit and power supply device |
| CN112636449B (en) * | 2020-11-18 | 2023-08-25 | 努比亚技术有限公司 | Multi-path power supply circuit and power supply device |
| CN112910031A (en) * | 2021-01-18 | 2021-06-04 | 江苏航空职业技术学院 | Low-power wireless charging power supply system circuit |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20160408 |