CN104300642A - Single lithium battery type solar controller with step-down LED constant current drive - Google Patents

Single lithium battery type solar controller with step-down LED constant current drive Download PDF

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Publication number
CN104300642A
CN104300642A CN201410593710.XA CN201410593710A CN104300642A CN 104300642 A CN104300642 A CN 104300642A CN 201410593710 A CN201410593710 A CN 201410593710A CN 104300642 A CN104300642 A CN 104300642A
Authority
CN
China
Prior art keywords
chip microcomputer
led
constant current
lithium battery
solar
Prior art date
Application number
CN201410593710.XA
Other languages
Chinese (zh)
Inventor
胡存刚
葛同哲
张云雷
Original Assignee
江苏东润光伏科技有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 江苏东润光伏科技有限公司 filed Critical 江苏东润光伏科技有限公司
Priority to CN201410593710.XA priority Critical patent/CN104300642A/en
Publication of CN104300642A publication Critical patent/CN104300642A/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B47/00Circuit arrangements for operating light sources in general, i.e. where the type of the light source is not relevant
    • H05B47/10Controlling the light source
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers

Abstract

The invention relates to a solar controller, in particular to a single lithium battery type solar controller with step-down LED constant current drive. The single lithium battery type solar controller comprises a solar battery, a single-chip microcomputer and a storage battery, wherein the solar battery is connected with the non-inverting input end of the single-chip microcomputer through a first A/D sampling unit, the output end of the single-chip microcomputer is connected with the solar battery and connected with the storage battery through a charging and discharging control unit, the storage battery is connected with the input end of the single-chip microcomputer through a second A/D sampling unit, and the single-chip microcomputer is further connected with a lithium battery power supply unit and connected with an LED through a step-down LED constant current drive unit. By the adoption of the structure, the single lithium battery is used for supplying power, so that the size of the controller is reduced and the operating reliability of the controller is improved; charging and discharging protection of the storage battery can be achieved, so that the stability of a system is improved.

Description

With the single lithium battery controller for solar that step-down LED constant current drives
Technical field
The present invention relates to a kind of controller for solar, particularly a kind of single lithium battery controller for solar driven with step-down LED constant current.
Background technology
Controller for solar full name is solar charging/discharging controller, is in solar power system, controls multichannel solar cell array to charge in batteries and storage battery to the automatic control equipment of solar inverter load supplying.At present, existing solar street lamp controller generally all forms control circuit by microcontroller and peripheral circuit thereof, and MOSFET or relay form switching device.This quasi-controller can complete the functions such as solar energy MPPT tracing control, storage battery electric energy management, load discharge control.This quasi-controller is generally with storage battery power supply, once storage battery breaks down, whole controller work is affected.And the power circuit of this controller generally adopts and directly charges to storage battery, does not protect the discharge and recharge of storage battery, storage battery works long hours and greatly can reduce the useful life of storage battery in this state, affects the reliability and stability of whole system.
For the control of great power LED, the Main of existing system is crosstalk resistance current limliting, and this mode can produce a very large impact the useful life of LED; Another kind of way connects a constant current driver circuit for LED, and this mode can increase the cost of whole system, and Controlling vertex increases, and reliability reduces.
Summary of the invention
The technical issues that need to address of the present invention are to provide the single lithium battery controller for solar that a kind of reliable and stable band step-down LED constant current drives.
For solving above-mentioned technical problem, the single lithium battery controller for solar that band step-down LED constant current of the present invention drives comprises solar cell, single-chip microcomputer and storage battery, described solar cell is connected with single-chip microcomputer phase input by an A/D sampling unit, and described single-chip microcomputer output is connected with solar cell; Described single-chip microcomputer output is connected with storage battery by charge-discharge control unit, and described storage battery is connected with single-chip microcomputer input by the 2nd A/D sampling unit; Described single-chip microcomputer is also connected with lithium battery power supply unit, and described single-chip microcomputer is connected with LED by step-down LED constant current driver element.
Further, described step-down LED constant current driver element comprises metal-oxide-semiconductor J1, and the drain electrode of described metal-oxide-semiconductor J1 is connected with storage battery, and the grid of described metal-oxide-semiconductor J1 is connected with single-chip microcomputer output; The source electrode of described metal-oxide-semiconductor J1 is connected with LED by inductance L 1, is parallel with diode D1 and the electric capacity C1 of reversal connection between the source electrode of described metal-oxide-semiconductor J1 and ground; Described LED, by resistance R1 ground connection, is connected with single-chip microcomputer input between described LED with resistance R1.
Further, described single-chip microcomputer also communicates to connect with host computer.
After adopting said structure, controller for solar drives with great power LED and combines by the present invention, realizes, can increase the reliability of whole solar control system undoubtedly, and reduce costs in a controller.Use single lithium battery is powered, and reduces the volume of controller, increases the operational reliability of controller, and can realize protecting the discharge and recharge of storage battery, improves the stability of system.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is structured flowchart of the present invention.
Fig. 2 is the circuit theory diagrams of LED step-down constant current driving unit of the present invention.
In figure: 1 is single-chip microcomputer, 2 is solar cell, and 3 is an A/D sampling unit, and 4 is storage battery, 5 is the 2nd A/D sampling unit, 6 is charge-discharge control unit, and 7 is lithium battery power supply unit, and 8 is step-down LED constant current driver element, 9 is LED, 10 is host computer, and 11 is single-chip microcomputer output, and 12 is single-chip microcomputer input
Embodiment
As shown in Figure 1, the single lithium battery controller for solar that band step-down LED constant current of the present invention drives comprises solar cell 2, single-chip microcomputer 1 and storage battery 4, described solar cell is connected with single-chip microcomputer phase input by an A/D sampling unit 3, and described single-chip microcomputer output is connected with solar cell; Described single-chip microcomputer output is connected with storage battery by charge-discharge control unit 6, and described storage battery is connected with single-chip microcomputer input by the 2nd A/D sampling unit 5; Described single-chip microcomputer is also connected with lithium battery power supply unit 7, and described single-chip microcomputer is connected with LED9 by step-down LED constant current driver element 8.Adopt single lithium battery to power to controller, reduce external power source to the impact of controller, improve stability.
As shown in Figure 2, described step-down LED constant current driver element comprises metal-oxide-semiconductor J1, and the drain electrode of described metal-oxide-semiconductor J1 is connected with storage battery, and the grid of described metal-oxide-semiconductor J1 is connected with single-chip microcomputer output 11; The source electrode of described metal-oxide-semiconductor J1 is connected with LED by inductance L 1, is parallel with diode D1 and the electric capacity C1 of reversal connection between the source electrode of described metal-oxide-semiconductor J1 and ground; Described LED, by resistance R1 ground connection, is connected with single-chip microcomputer input 12 between described LED with resistance R1.Single-chip microcomputer is by the sampling of resistance R1 electric current; produce PWM ripple; the break-make of control switch pipe J1; realize the charging to electric capacity C1 and powering load; diode D1 plays the effect of afterflow protection, inductance L 1 ensures the change that electric current is less when switching tube break-make, this switching tube and LC circuit basic comprising load main circuit; produced the break-make of PWM ripple control switch pipe by program, the step-down current constant control of LED can be realized.
Further, described single-chip microcomputer 1 also communicates to connect with host computer 10, carries out real time communication with host computer, realizes real-time control and the man-machine interaction of system.
Although the foregoing describe the specific embodiment of the present invention; but those skilled in the art are to be understood that; these only illustrate; various changes or modifications can be made to present embodiment; and not deviating from principle and the essence of invention, protection scope of the present invention is only defined by the appended claims.

Claims (3)

1. the single lithium battery controller for solar driven with step-down LED constant current, it is characterized in that: comprise solar cell, single-chip microcomputer and storage battery, described solar cell is connected with single-chip microcomputer phase input by an A/D sampling unit, and described single-chip microcomputer output is connected with solar cell; Described single-chip microcomputer output is connected with storage battery by charge-discharge control unit, and described storage battery is connected with single-chip microcomputer input by the 2nd A/D sampling unit; Described single-chip microcomputer is also connected with lithium battery power supply unit, and described single-chip microcomputer is connected with LED by step-down LED constant current driver element.
2. according to the single lithium battery controller for solar that band step-down LED constant current according to claim 1 drives, it is characterized in that: described step-down LED constant current driver element comprises metal-oxide-semiconductor J1, the drain electrode of described metal-oxide-semiconductor J1 is connected with storage battery, and the grid of described metal-oxide-semiconductor J1 is connected with single-chip microcomputer output; The source electrode of described metal-oxide-semiconductor J1 is connected with LED by inductance L 1, is parallel with diode D1 and the electric capacity C1 of reversal connection between the source electrode of described metal-oxide-semiconductor J1 and ground; Described LED, by resistance R1 ground connection, is connected with single-chip microcomputer input between described LED with resistance R1.
3., according to the single lithium battery controller for solar that band step-down LED constant current according to claim 1 drives, it is characterized in that: described single-chip microcomputer also communicates to connect with host computer.
CN201410593710.XA 2014-10-29 2014-10-29 Single lithium battery type solar controller with step-down LED constant current drive CN104300642A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410593710.XA CN104300642A (en) 2014-10-29 2014-10-29 Single lithium battery type solar controller with step-down LED constant current drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410593710.XA CN104300642A (en) 2014-10-29 2014-10-29 Single lithium battery type solar controller with step-down LED constant current drive

Publications (1)

Publication Number Publication Date
CN104300642A true CN104300642A (en) 2015-01-21

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1917735A (en) * 2006-08-22 2007-02-21 东南大学 Controller of LED illuminating lamp of solar energy
CN201182028Y (en) * 2008-04-17 2009-01-14 保定市阳光盛原科技有限公司 Solar intelligent LED road lamp controller
CN201781293U (en) * 2010-06-01 2011-03-30 青岛天盈华智科技有限公司 Intelligent solar charge-discharge controller
CN202998610U (en) * 2012-12-26 2013-06-12 四川新力光源股份有限公司 LED constant current power supply
CN203840615U (en) * 2014-05-06 2014-09-17 安徽省安泰科技股份有限公司 Waterproof solar street lamp controller
CN204167950U (en) * 2014-10-29 2015-02-18 江苏东润光伏科技有限公司 With the single lithium battery controller for solar that step-down LED constant current drives

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1917735A (en) * 2006-08-22 2007-02-21 东南大学 Controller of LED illuminating lamp of solar energy
CN201182028Y (en) * 2008-04-17 2009-01-14 保定市阳光盛原科技有限公司 Solar intelligent LED road lamp controller
CN201781293U (en) * 2010-06-01 2011-03-30 青岛天盈华智科技有限公司 Intelligent solar charge-discharge controller
CN202998610U (en) * 2012-12-26 2013-06-12 四川新力光源股份有限公司 LED constant current power supply
CN203840615U (en) * 2014-05-06 2014-09-17 安徽省安泰科技股份有限公司 Waterproof solar street lamp controller
CN204167950U (en) * 2014-10-29 2015-02-18 江苏东润光伏科技有限公司 With the single lithium battery controller for solar that step-down LED constant current drives

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Application publication date: 20150121

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