CN204167950U - With the single lithium battery controller for solar that step-down LED constant current drives - Google Patents
With the single lithium battery controller for solar that step-down LED constant current drives Download PDFInfo
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- CN204167950U CN204167950U CN201420636083.9U CN201420636083U CN204167950U CN 204167950 U CN204167950 U CN 204167950U CN 201420636083 U CN201420636083 U CN 201420636083U CN 204167950 U CN204167950 U CN 204167950U
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- chip microcomputer
- constant current
- solar
- storage battery
- lithium battery
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Abstract
The utility model 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, 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.After adopting said structure, use single lithium battery to power, reduce the volume of controller, increase the operational reliability of controller, and can realize protecting the discharge and recharge of storage battery, improve the stability of system.
Description
Technical field
The utility model 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 utility model technical issues that need to address 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 the utility model band step-down LED constant current 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 utility model, 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 utility model is described in further detail.
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is the circuit theory diagrams of the utility model LED step-down constant current driving unit.
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 the utility model band step-down LED constant current 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 embodiment of the present utility model; 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 utility model, protection range of the present utility model 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420636083.9U CN204167950U (en) | 2014-10-29 | 2014-10-29 | With the single lithium battery controller for solar that step-down LED constant current drives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420636083.9U CN204167950U (en) | 2014-10-29 | 2014-10-29 | With the single lithium battery controller for solar that step-down LED constant current drives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204167950U true CN204167950U (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420636083.9U Expired - Fee Related CN204167950U (en) | 2014-10-29 | 2014-10-29 | With the single lithium battery controller for solar that step-down LED constant current drives |
Country Status (1)
| Country | Link |
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| CN (1) | CN204167950U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300642A (en) * | 2014-10-29 | 2015-01-21 | 江苏东润光伏科技有限公司 | Single lithium battery type solar controller with step-down LED constant current drive |
-
2014
- 2014-10-29 CN CN201420636083.9U patent/CN204167950U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300642A (en) * | 2014-10-29 | 2015-01-21 | 江苏东润光伏科技有限公司 | Single lithium battery type solar controller with step-down LED constant current drive |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150218 Termination date: 20191029 |