CN201774704U - Novel charging circuit for solar-powered LED lighting - Google Patents
Novel charging circuit for solar-powered LED lighting Download PDFInfo
- Publication number
- CN201774704U CN201774704U CN2009202912228U CN200920291222U CN201774704U CN 201774704 U CN201774704 U CN 201774704U CN 2009202912228 U CN2009202912228 U CN 2009202912228U CN 200920291222 U CN200920291222 U CN 200920291222U CN 201774704 U CN201774704 U CN 201774704U
- Authority
- CN
- China
- Prior art keywords
- pin
- current
- voltage
- storage battery
- charging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model provides a novel charging circuit for solar-powered LED lighting, and aims to solve the problems of solar-powered charging of a storage battery and the stable current power supply of an LED, so as to improve the service efficiencies of the LED and the storage battery and prolong the service lives of the LED and the storage battery. To achieve the purposes, the charging circuit adopts the technical scheme that a special integrated circuit (IC) chip is used and includes an independent voltage control circuit, a current-limiting amplifier and a driver controlling the internal operation of the chip; and the driver can supply current as large as 500mA, the battery rated voltage is 12V, the capacity is 7Ah, the input voltage (VIN) is 18V, the forward voltage (VF) is 13.8V, the open circuit voltage (VOC) is 15V, the maximum input current (Imax) is 500mA, and the input/output channel trace (IOCT) is 50mA. As a charger is always connected to the storage battery, a diode is connected in series between a series adjustment pipe and an output end to prevent the current of the storage battery from flowing back to the charger. The software and hardware designs of the circuit are greatly simplified, and the system reliability is remarkably improved.
Description
Technical field:
The present invention relates to a kind of high efficiency smart charging circuit of solar powered LED illumination.
Technical background:
LED as the 4th generation new type light source, have low voltage power supply, energy-conservation, long service life etc. a bit, stable brightness need come driving LED with constant current, and how input voltage all must keep the constant of this electric current.Solar energy is desirable selections as the LED composition illuminator of clean energy resource and environmental protection and energy saving.But realize that solar energy converting is can be utilized by led light source fully behind the electric energy, make its longer service life, luminous more stable, need the drive circuit of efficient stable to realize.Therefore guarantee that solar powered current stabilization becomes LED illumination development important component part.
Summary of the invention:
The objective of the invention is to solve solar energy to charge in batteries and to the stabling current powerup issue of LED.To improve the service efficiency and the useful life of LED and storage battery.
For achieving the above object, the technical scheme that the utility model patent provides is: adopt special-purpose IC chip, this chip includes independently voltage control circuit and limiting amplifier, the driver in can control chip, driver provides electric current can reach 500mA, the battery rated voltage is 12V, and capacity is 7Ah, VIN=18V, VF=13.8V, VOC=15V, Imax=500mA, IOCT=50mA.Because charger is connected on the storage battery all the time, blows back into charger for preventing battery current, between series connection adjustment pipe and output, seal in a diode.This circuit has been simplified the software and hardware design of circuit, the big reliability of raising system greatly.
Description of drawings:
Accompanying drawing 1, circuit theory diagrams of the present invention
Execution mode:
Be further described below in conjunction with 1 pair of the utility model of accompanying drawing, most preferred embodiment of the present utility model is: the high efficiency smart charging circuit of solar powered LED illumination, it is characterized in that: charging voltage control accurately and high current limliting, when voltage or temperature are low, can make charging enter the trickle state, to ensure the useful life of storage battery, its internal reference voltage can become with variation of ambient temperature effectively, and Changing Pattern is coordinated mutually with the variation characteristic of battery.The guarantee battery can fully charge and can not produce and seriously overcharge phenomenon.At first, each pin to IC describes:, 1, CS out 2, CS-3, CS+ 4, CL 5, VIN 6, GND 7, charging indication 8, overcharging stops 9, the indication 10 of overcharging, state level control 11, charge initiation 12, current-sharing biasing 13, voltage detecting 14, compensation 15, flows out 16, flows into.
After electric energy one end that sunlight transforms enters R1 and adds with the 18V input voltage, the other end is connected to the emitter of Q1 and the pin 2 of IC, pin 4, the end of the front end of R1 connection simultaneously and R7, and the pin 3 of IC, pin 5, the base stage of Q1 connects and IC pin 11, the collector electrode of Q1 is connected with pin 16 and battery positive voltage, the other end of R7 is connected to the end of indication light-emitting diode D2, the other end of light-emitting diode D2 connects the pin 7 with IC, and the pin 1 of IC directly connects the pin 8 with IC, pin 6 ground connection of IC, the pin 9 of IC is idle, pin 10 1 ends of IC are connected to R2, and pin 11 1 ends of IC are connected to R3, and pin 12 1 ends of IC are connected to R4, R5, pin 13 1 ends of IC are connected to R4, R6, pin 14 1 ends of IC are connected to capacitor C1, the other end ground connection of capacitor C1, and the other end of R2 is connected to R4, R6, the other end of R3 is connected to R5, a termination and another termination of storage battery and the R4 of while R5, another termination of R4 and R6, the other end ground connection of R6.The discharge prevention resistance of storage battery when forming the power source charges interruption by R4, R5, R6.
The beginning constant current charge, charging current is 500mA, cell voltage raises gradually.Electric current arrives D2 by R7 simultaneously, D2 lights show state and is charging, and pin 1,2,3 belongs to the current detecting comparison circuit, the situation of change of monitoring current, and situation of change carried out current offset by pin 11, pin 14 compensates, when cell voltage reaches 95% (being 14.25V) of overcharged voltage VOC, after pin 13 detects, battery changes overcharge condition over to, charging voltage maintains overcharge voltage, and charging current begins to descend, and pin 9 begins indication.Carry out current-limiting charge by pin 4.Maintain 25Ma.
The embodiment of the above only is preferred embodiment of the present utility model, and non-once limits practical range of the present utility model, so the variation that all shapes with the utility model, principle are done all is covered by within the protection range of the present utility model.
Claims (2)
1. new type solar energy power supply LED illumination charging circuit, it is characterized in that: after electric energy one end that sunlight transforms enters R1 and adds with the 18V input voltage, the other end is connected to the emitter of Q1 and the pin 2 of IC, pin 4, the end of the front end of R1 connection simultaneously and R7, and the pin 3 of IC, pin 5, the base stage of Q1 connects and IC pin 11, the collector electrode of Q1 is connected with pin 16 and battery positive voltage, the other end of R7 is connected to the end of indication light-emitting diode D2, the other end of light-emitting diode D2 connects the pin 7 with IC, the pin 1 of IC directly connects the pin 8 with IC, pin 6 ground connection of IC, the pin 9 of IC is idle, pin 10 1 ends of IC are connected to R2, pin 11 1 ends of IC are connected to R3, pin 12 1 ends of IC are connected to R4, R5, pin 13 1 ends of IC are connected to R4, R6, pin 14 1 ends of IC are connected to capacitor C1, the other end ground connection of capacitor C1, the other end of R2 is connected to R4, R6, the other end of R3 is connected to R5, simultaneously a termination and another termination of storage battery and the R4 of R5, another termination of R4 and R6, the other end ground connection of R6.
2. according to claim 1 described a kind of new type solar energy power supply LED illumination charging circuit, it is characterized in that: the discharge prevention resistance of storage battery when forming the power source charges interruption by R4, R5, R6; The beginning constant current charge, charging current is 500mA, cell voltage raises gradually; Electric current arrives D2 by R7 simultaneously, D2 lights show state and is charging, and pin 1,2,3 belongs to the current detecting comparison circuit, the situation of change of monitoring current, and situation of change carried out current offset by pin 11, pin 14 compensates, when cell voltage reach overcharged voltage VOC 95% the time, after pin 13 detects, battery changes overcharge condition over to, charging voltage maintains overcharge voltage, and charging current begins to descend, and pin 9 begins indication; Carry out current-limiting charge by pin 4, maintain 25Ma.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202912228U CN201774704U (en) | 2009-12-02 | 2009-12-02 | Novel charging circuit for solar-powered LED lighting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202912228U CN201774704U (en) | 2009-12-02 | 2009-12-02 | Novel charging circuit for solar-powered LED lighting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201774704U true CN201774704U (en) | 2011-03-23 |
Family
ID=43754544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202912228U Expired - Fee Related CN201774704U (en) | 2009-12-02 | 2009-12-02 | Novel charging circuit for solar-powered LED lighting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201774704U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401284A (en) * | 2013-07-26 | 2013-11-20 | Tcl通讯（宁波）有限公司 | Charging control device and mobile terminal |
-
2009
- 2009-12-02 CN CN2009202912228U patent/CN201774704U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401284A (en) * | 2013-07-26 | 2013-11-20 | Tcl通讯（宁波）有限公司 | Charging control device and mobile terminal |
| CN103401284B (en) * | 2013-07-26 | 2015-10-28 | Tcl通讯（宁波）有限公司 | Battery charge controller and mobile terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202385351U (en) | Solar lamp controller with adjustable load power | |
| CN201182028Y (en) | Solar intelligent LED road lamp controller | |
| CN203363958U (en) | Hybrid energy storage type solar LED street lamp | |
| CN101166385A (en) | Efficient LED solar lamp controller | |
| CN202496116U (en) | Solar street lamp control system | |
| CN101026917B (en) | Solar LED lamp circuit | |
| CN201499355U (en) | Wind solar LED streetlamp intelligent controller | |
| CN203859898U (en) | Solar LED street lamp controller based on single-chip microcomputer | |
| CN202276495U (en) | LED solar controller capable of carrying out multi-period PWM light modulation | |
| CN103024993A (en) | Energy-saving outdoor illumination controlling system and controlling method | |
| CN204652746U (en) | A kind of solar energy controlled LED lamp | |
| CN201839479U (en) | Special solar controller for LED (light-emitting diode) | |
| CN201774704U (en) | Novel charging circuit for solar-powered LED lighting | |
| CN102752935A (en) | Solar light-emitting diode (LED) lamp controller | |
| CN202738220U (en) | Intelligent solar LED street lamp controller | |
| CN202488834U (en) | Led solar energy lawn lamp | |
| CN202026508U (en) | Solar energy controller | |
| CN202979359U (en) | Solar LED lamp controller | |
| CN101471570A (en) | Solar charging circuit | |
| CN201860482U (en) | Charge and discharge control circuit and protection circuit of solar lamp | |
| CN201621600U (en) | Small solar rotating lamp | |
| CN202565519U (en) | Light-emitting diode (LED) solar street lamp controller | |
| CN203642051U (en) | Low-power-consumption wind energy and solar energy street lamp | |
| CN103002631A (en) | Intelligent solar micro-computerized soft-drive constant-current source controller | |
| CN202353899U (en) | Energy-saving environmentally-friendly street lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20111202 |