CN204031557U - The controller for solar that step-down LED constant current drives - Google Patents
The controller for solar that step-down LED constant current drives Download PDFInfo
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- CN204031557U CN204031557U CN201420485566.3U CN201420485566U CN204031557U CN 204031557 U CN204031557 U CN 204031557U CN 201420485566 U CN201420485566 U CN 201420485566U CN 204031557 U CN204031557 U CN 204031557U
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- chip microcomputer
- constant current
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- solar
- controller
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Abstract
The utility model relates to a kind of controller for solar, particularly a kind of controller for solar of step-down LED constant current driving, comprise single-chip microcomputer, solar cell and storage battery, described solar cell is connected with single-chip microcomputer input by an A/D sampling module, described single-chip microcomputer output is connected with solar cell, described single-chip microcomputer is connected with LED light by step-down constant current driving unit, and described single-chip microcomputer output is connected with display screen, and described single-chip microcomputer is connected with storage battery.After adopting said structure, single-chip microcomputer realizes step-down constant current by step-down constant current driving unit to LED light and drives; Charge status indicating light is utilized to show charged state and storage battery superpressure fault, battery condition indicator light display storage battery pressure condition.
Description
Technical field
The utility model relates to a kind of controller for solar, the controller for solar of particularly a kind of step-down LED constant current driving.
Background technology
At present, existing voltage-dropping type controller for solar 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.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.And the power circuit of this controller generally adopts and directly charges to storage battery, do not give and protection the discharge and recharge of storage battery, storage battery works long hours and can reduce the useful life of storage battery in such state, affects the reliability and stability of whole equipment.And the manually each optimum configurations of adjustment, use inconvenience, maximum output current is little.
Summary of the invention
The utility model technical issues that need to address be to provide a kind of can carry out step-down and to LED light realize constant current drive controller for solar.
For solving above-mentioned technical problem, the controller for solar that the constant current of the utility model step-down LED drives comprises single-chip microcomputer, solar cell and storage battery, described solar cell is connected with single-chip microcomputer input by an A/D sampling module, described single-chip microcomputer output is connected with solar cell, described single-chip microcomputer is connected with LED light by step-down constant current driving unit, described single-chip microcomputer output is connected with display screen, and described single-chip microcomputer is connected with storage battery.
Further, described step-down constant current driving unit comprises step-down constant-current driven chip U1, the pin V of described step-down constant-current driven chip U1
iN, pin CE is connected with single-chip microcomputer output; Described pin V
iNby the series circuit ground connection of resistance R1 and electric capacity C1, described pin CE is by electric capacity C2 ground connection, the pin LX of described step-down constant-current driven chip U1 is connected with pin FB with the series circuit of LED light by inductance L 1, described LED light is parallel with electric capacity C3, and described pin FB is by feedback resistance R2 ground connection; Described pin LX is connected with diode D1 negative pole, described diode D1 plus earth.
Further, described diode D1 is Schottky diode.
Further, be connected with pressure regulation unit between described pin FB and feedback resistance R2, described pressure regulation unit comprises power supply V
dC, resistance R3 and R4, described power supply V
dCbe connected with pin FB by resistance R3, described pin FB is connected with resistance R2, LED light by resistance R4.
Further, described single-chip microcomputer is also connected with ZigBee module.
Further, described storage battery is connected with single-chip microcomputer input by the 2nd A/D sampling module, and described single-chip microcomputer is connected with storage battery by charging control circuit.
After adopting said structure, single-chip microcomputer realizes step-down constant current by step-down constant current driving unit to LED light and drives; Charge status indicating light is utilized to show charged state and storage battery superpressure fault, battery condition indicator light display storage battery pressure condition.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the circuit theory diagrams of the utility model step-down constant current driving unit.
In figure: 1 is single-chip microcomputer, 2 is solar cell, and 3 is an A/D sampling module, and 4 is step-down constant current driving unit, 5 is LED light, and 6 is the 2nd A/D sampling module, and 7 is storage battery, and 8 is charging control circuit, 9 is ZigBee module, and 10 is display screen, and 41 is pressure regulation unit
Embodiment
As shown in Figure 1, the controller for solar that the constant current of the utility model step-down LED drives comprises single-chip microcomputer 1, solar cell 2 and storage battery 7, described solar cell 7 is connected with single-chip microcomputer 1 input by an A/D sampling module 3, described single-chip microcomputer 1 output is connected with solar cell 2, described single-chip microcomputer is connected with LED light by step-down constant current driving unit, described single-chip microcomputer output is connected with display screen 10, and described single-chip microcomputer is connected with storage battery.Described single-chip microcomputer 1 gathers storage battery 7 voltage, carries out charge and discharge control and indicate battery-operated state by LED light 5 to storage battery 7.Described single-chip microcomputer gathers solar array voltage, and the MPPT realizing solar energy controls.
As shown in Figure 2, described step-down constant current driving unit comprises step-down constant-current driven chip U1, the pin V of described step-down constant-current driven chip U1
iN, pin CE is connected with single-chip microcomputer output; Described pin V
iNby the series circuit ground connection of resistance R1 and electric capacity C1, described pin CE is by electric capacity C2 ground connection, the pin LX of described step-down constant-current driven chip U1 is connected with pin FB with the series circuit of LED light by inductance L 1, described LED light is parallel with electric capacity C3, and described pin FB is by feedback resistance R2 ground connection; Described pin LX is connected with diode D1 negative pole, described diode D1 plus earth.Here diode D1 adopts Schottky diode, plays a very good protection to circuit.
Be connected with pressure regulation unit 41 between described pin FB and feedback resistance R2, described pressure regulation unit comprises power supply V
dC, resistance R3 and R4, described power supply V
dCbe connected with pin FB by resistance R3, described pin FB is connected with resistance R2, LED light by resistance R4.When the voltage of the pin FB of the utility model step-down constant-current driven chip U1 is determined, be constant current output, output current is the voltage of pin FB and the ratio of feedback resistance R2; Exporting in order to multiple different constant current value can be realized, the voltage of pin FB can being adjusted, the effect of namely the utility model pressure regulation unit 41, by changing power supply V
dCvoltage, just can adjust the voltage of pin FB.
Further, described single-chip microcomputer is also connected with ZigBee module 9, can realize Long-distance Control like this by ZigBee module 9.
Further, described storage battery is connected with single-chip microcomputer 1 input by the 2nd A/D sampling module 6, and described single-chip microcomputer is connected with storage battery 7 by charging control circuit 8, and single-chip microcomputer 1 realizes controlling the charging of storage battery 7 by charging control circuit 8.
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 of the present utility model and essence, protection range of the present utility model is only defined by the appended claims.
Claims (6)
1. the controller for solar of a step-down LED constant current driving, comprise single-chip microcomputer, solar cell and storage battery, it is characterized in that: described solar cell is connected with single-chip microcomputer input by an A/D sampling module, described single-chip microcomputer output is connected with solar cell, described single-chip microcomputer is connected with LED light by step-down constant current driving unit, described single-chip microcomputer output is connected with display screen, and described single-chip microcomputer is connected with storage battery.
2., according to the controller for solar that step-down LED constant current according to claim 1 drives, it is characterized in that: described step-down constant current driving unit comprises step-down constant-current driven chip U1, the pin V of described step-down constant-current driven chip U1
iN, pin CE is connected with single-chip microcomputer output; Described pin V
iNby the series circuit ground connection of resistance R1 and electric capacity C1, described pin CE is by electric capacity C2 ground connection, the pin LX of described step-down constant-current driven chip U1 is connected with pin FB with the series circuit of LED light by inductance L 1, described LED light is parallel with electric capacity C3, and described pin FB is by feedback resistance R2 ground connection; Described pin LX is connected with diode D1 negative pole, described diode D1 plus earth.
3., according to the controller for solar that step-down LED constant current according to claim 2 drives, it is characterized in that: described diode D1 is Schottky diode.
4., according to the controller for solar that step-down LED constant current according to claim 2 drives, it is characterized in that: be connected with pressure regulation unit between described pin FB and feedback resistance R2, described pressure regulation unit comprises power supply V
dC, resistance R3 and R4, described power supply V
dCbe connected with pin FB by resistance R3, described pin FB is connected with resistance R2, LED light by resistance R4.
5., according to the controller for solar that step-down LED constant current according to claim 1 drives, it is characterized in that: described single-chip microcomputer is also connected with ZigBee module.
6., according to the controller for solar that step-down LED constant current according to claim 1 drives, it is characterized in that: described storage battery is connected with single-chip microcomputer input by the 2nd A/D sampling module, and described single-chip microcomputer is connected with storage battery by charging control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420485566.3U CN204031557U (en) | 2014-08-26 | 2014-08-26 | The controller for solar that step-down LED constant current drives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420485566.3U CN204031557U (en) | 2014-08-26 | 2014-08-26 | The controller for solar that step-down LED constant current drives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204031557U true CN204031557U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420485566.3U Expired - Fee Related CN204031557U (en) | 2014-08-26 | 2014-08-26 | The controller for solar that step-down LED constant current drives |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779902A (en) * | 2015-05-12 | 2015-07-15 | 长沙金定信息技术有限公司 | Solar energy power module |
-
2014
- 2014-08-26 CN CN201420485566.3U patent/CN204031557U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779902A (en) * | 2015-05-12 | 2015-07-15 | 长沙金定信息技术有限公司 | Solar energy power module |
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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 |
Granted publication date: 20141217 Termination date: 20190826 |
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| CF01 | Termination of patent right due to non-payment of annual fee |