CN202587502U - Control-driven system for lithium-battery photovoltaic LED - Google Patents
Control-driven system for lithium-battery photovoltaic LED Download PDFInfo
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- CN202587502U CN202587502U CN 201220171495 CN201220171495U CN202587502U CN 202587502 U CN202587502 U CN 202587502U CN 201220171495 CN201220171495 CN 201220171495 CN 201220171495 U CN201220171495 U CN 201220171495U CN 202587502 U CN202587502 U CN 202587502U
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Abstract
The utility model discloses a control-driven system for a lithium-battery photovoltaic LED and the control-driven system comprises a solar battery array, a BUCK constant-current circuit, a BOOST constant-current drive circuit, a load LED circuit and a lithium battery and also comprises a MPPT maximum-power-point tracking circuit. The MPPT maximum-power-point tracking circuit adopts a voltage observation method. The control system for the photovoltaic LED provided by the utility model can track the maximum power point of the solar battery in real time, raise energy utilization rate to a great extent, reduce influence brought by environmental factors and stably drive the LED in a high-efficiency manner, thereby achieving purposes of energy saving, environmental protection and resource reasonable utilization.
Description
Technical field
The utility model relates to a kind of lithium battery photovoltaic LED control-driven system.
Background technology
At present, human main in the world energy sources structure what utilize is fossil energy, yet these energy resources are limited and to have brought serious environmental pollution, photovoltaic generation be one of method of reply energy crisis.LED is a kind of solid state light emitter, has energy-saving and environmental protection, long-life, controllability advantages of higher.The LED solar street light combines solar energy power generating with the semiconductor lighting technology, have energy-conservation, life-span length, environmental protection etc. and showing advantage.
Traditional photovoltaic charged pattern that has adopted constant current charge to combine with the du/dt modified constant-voltage charge; Because the output characteristic of solar cell receives the influence of factors such as load condition, sunshine amount ambient temperature; Power output is unstable, causes photovoltaic system efficient to reduce.
The utility model content
The purpose of the utility model has provided a kind of photovoltaic lithium battery LED control system, maximum power point that can the real-time tracking solar cell, maximum raising energy utilization rate.
Utility model solves the technical scheme that its technical problem adopted; A kind of lithium battery photovoltaic LED control-driven system; Comprise solar battery array, BUCK constant-current circuit, BOOST constant-current drive circuit, load led circuit, lithium battery, it also comprises MPPT MPPT maximum power point tracking circuit.
Described MPPT MPPT maximum power point tracking circuit adopts the voltage observation method.
The beneficial effect of the utility model: the maximum power point that this control system not only can the real-time tracking solar cell; Maximum raising energy utilization rate; Reduce the influence that environmental factor is brought, and the driving LED of ability stability and high efficiency, the purpose that reaches energy-conserving and environment-protective and make rational use of resources.
Description of drawings
Fig. 1 is the whole topological structure figure of the utility model.
Embodiment
Below in conjunction with Fig. 1 the utility model is further specified.
A kind of lithium battery photovoltaic LED control-driven system comprises solar battery array 1, BUCK constant-current circuit 3, BOOST constant-current drive circuit 4, load led circuit 5, lithium battery 6, and it also comprises MPPT MPPT maximum power point tracking circuit 2.
Described MPPT MPPT maximum power point tracking circuit 2 adopts the voltage observation method.
When lithium battery 6 chargings; The at first output of solar panel in the electric circuit inspection solar battery array 1; If certain voltage is arranged, be judged as daytime, open the metal-oxide-semiconductor of BUCK constant-current circuit 3 back levels this moment; The enabling of BOOST constant-current drive circuit 4 closed, and makes charge circuit open discharge loop and breaks off.Solar energy converts direct voltage to through solar battery array then; Be connected to BUCK constant-current circuit 3 through MPPT MPPT maximum power point tracking circuit 2; By BUCK constant-current circuit 3 direct voltage being transformed into constant electric current again is lithium battery 6 chargings; Also detect the output voltage and the electric current of BUCK constant-current circuit 3 in this while circuit; Judge calculating through single-chip microcomputer, the scheme that finally obtains an optimum feeds back to BUCK constant-current circuit 3, makes the maximum power under solar battery array 1 output Current Temperatures and the sunshine condition through the output current of adjusting BUCK constant-current circuit 3.During the LED discharge, the at first output of solar panel in the electric circuit inspection solar battery array 1 is not if there is voltage; Be judged as night, close the metal-oxide-semiconductor of BUCK constant-current circuit 3 back grade this moment, and the enabling of BOOST constant-current drive circuit 4 opened; Charge circuit is broken off, and discharge loop is open-minded.Lithium battery drives load led circuit 5 through BOOST constant-current drive circuit 4 then, and can also carry out three grades of light modulations of LED through key switch, to satisfy the demand under the varying environment, has also practiced thrift electric energy simultaneously.
In the utility model, establish the actual output voltage that Vin is a solar panel, Vm puts pairing output voltage for the solar panel Maximum Power Output.The beginning circuit detects the output voltage of solar panel, if Vin＞Vm explains that solar energy is sufficient, this moment, controller can increase charging current, otherwise continued down to carry out; If Vin＜Vm explains that solar energy is inadequate, this moment, controller can reduce charging current, otherwise continued down to carry out.If use genetic algorithm to be used for MPPT; Though can overcome the interference that the acute variation of external environment causes, search maximum power point rapidly, after genetic algorithm searches maximum power point; Can not be stable work in maximum power point; Adopted based on the voltage observation method MPPT function of simplifying so this use is novel, can not only search maximum power point rapidly, and can be stable work in maximum power point.
The utlity model has ultralow quiescent dissipation, the holding state loss has only several microamperes electric current, has overcome control system and has not used lithium battery finally to cause the difficult problem that can't charge because of over-discharge can makes the control chip cisco unity malfunction for a long time.The BOOST constant-current drive circuit boosts; The output current precision is not more than 1%; Constant-current characteristics is good; And chip for driving has the characteristic of long-term normal operation under the adverse circumstances such as high temperature, just in time mated the long-life advantage of LED, real energy-saving and environmental protection, long-life, the characteristics that controllability is high of having accomplished.
Claims (2)
1. a lithium battery photovoltaic LED control-driven system is characterized in that comprising solar battery array, MPPT MPPT maximum power point tracking circuit, BUCK constant-current circuit, BOOST constant-current drive circuit, load led circuit, lithium battery.
2. a kind of lithium battery photovoltaic LED control-driven system according to claim 1 is characterized in that described MPPT MPPT maximum power point tracking circuit adopts the voltage observation method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220171495 CN202587502U (en) | 2012-04-23 | 2012-04-23 | Control-driven system for lithium-battery photovoltaic LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220171495 CN202587502U (en) | 2012-04-23 | 2012-04-23 | Control-driven system for lithium-battery photovoltaic LED |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202587502U true CN202587502U (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220171495 Expired - Fee Related CN202587502U (en) | 2012-04-23 | 2012-04-23 | Control-driven system for lithium-battery photovoltaic LED |
Country Status (1)
| Country | Link |
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| CN (1) | CN202587502U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105472809A (en) * | 2015-12-11 | 2016-04-06 | 江苏固立得精密光电有限公司 | High-constant-current ultraviolet control circuit |
| CN108233520A (en) * | 2018-02-09 | 2018-06-29 | 深圳市普兰德储能技术有限公司 | A kind of photovoltaic generation electric storage device |
-
2012
- 2012-04-23 CN CN 201220171495 patent/CN202587502U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105472809A (en) * | 2015-12-11 | 2016-04-06 | 江苏固立得精密光电有限公司 | High-constant-current ultraviolet control circuit |
| CN108233520A (en) * | 2018-02-09 | 2018-06-29 | 深圳市普兰德储能技术有限公司 | A kind of photovoltaic generation electric storage device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Room two, building F1, phase, Hefei Innovation Industrial Park, No. 2800, high tech Zone, Hefei, China,, Patentee after: ANHUI CAS-HIAU ELECTRICAL INC. Address before: 230088 circular economy institute, No. 2221 West Changjiang Road, Hefei hi tech Zone, Anhui Patentee before: Hefei Hiao electrical Technology Co., Ltd. |
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| DD01 | Delivery of document by public notice |
Addressee: Yu Kaigui Document name: Notification to Pay the Fees |
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| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Yu Kaigui Document name: Notice of termination of patent |
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| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20200423 |
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| CF01 | Termination of patent right due to non-payment of annual fee |