CN201182028Y - Solar intelligent LED street lamp controller - Google Patents
Solar intelligent LED street lamp controller Download PDFInfo
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- CN201182028Y CN201182028Y CNU2008201113666U CN200820111366U CN201182028Y CN 201182028 Y CN201182028 Y CN 201182028Y CN U2008201113666 U CNU2008201113666 U CN U2008201113666U CN 200820111366 U CN200820111366 U CN 200820111366U CN 201182028 Y CN201182028 Y CN 201182028Y
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- 238000001514 detection method Methods 0.000 abstract 1
- 238000005286 illumination Methods 0.000 description 8
- 238000007599 discharging Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
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Abstract
A solar intelligent LED street lamp controller adopts a single chip microcomputer control unit and a series PWM charging main circuit, a DC/DC conversion constant current source circuit is arranged in an output loop of a storage battery, and MOS tube electronic switches Q1, Q2 and Q3 controlled by the single chip microcomputer control unit are arranged, wherein the electronic switches Q1 and Q2 are arranged in the charging loop of a solar panel to the storage battery in series, and an electronic switch Q3 is arranged in the DC/DC conversion constant current source circuit; taking the open-circuit voltage of the solar panel as a detection signal for judging day and night; and a power resistor is adopted at the output side of the DC/DC conversion constant current source for sampling the working current of the LED light source, and constant current control, overload and short circuit protection are implemented according to the working current. The utility model discloses a can avoid solar panel array junction temperature too high, have overload and short-circuit protection function, can prolong battery and LED light source life's solar energy LED street lamp controller.
Description
Technical field
The utility model relates to a kind of solar energy intelligent LED controller for road lamp.
Background technology
The advantage of solar LED illuminating system is integrated solar energy and LED.Solar power generation application at present and LED illumination application development are swift and violent, and technology is increasingly mature.One of solar LED street lamp illumination key technologies for application is the solar charging/discharging controller.Present controller has following problem usually:
1. existing controller for solar charging modes is heavy-duty diode that prevents the storage battery back discharge of series connection in charge circuit usually, and when solar array power was big, the pressure drop loss and the heating loss of its diode were all bigger.
2. in order to prolong the useful life of storage battery, must implement intelligent three stages charging control, overcharge, cross and put to avoid it to storage battery.Existing controller for solar adopts short circuit control to implement over-charge protective, promptly after storage battery is full of, solar panels is carried out short circuit.This control mode can cause the solar array junction temperature too high, might reduce its useful life even damage solar panels.
3. existing led light source circuit is by the operating current of series connection high-power resistance with the restriction led light source, and when led light source power was big, the high-power resistance heating was serious; Produce three shortcomings like this: (1) need take good cooling measure, (2) the very valuable electrical power that provides of accumulators has caused serious waste, (3) resistance can only can't guarantee that but the operating current of led light source is invariable to a certain extent to the led light source current limliting; Therefore can have a strong impact on the useful life of led light source.
4. the most fusible links that adopt of existing overload and short-circuit protection, when load light fixture overload fault, by the blown fuse protection, when changing light fixture, the controller that also needs repairing burns the power device of controller sometimes even also.
The utility model content
At the above-mentioned problems in the prior art, the utility model provides a kind of solar LED street lamp controller that the solar array junction temperature is too high, have overload and short-circuit protection function, can prolong storage battery and led light source useful life of avoiding.
The technical scheme that the utility model provides is: solar energy intelligent LED controller for road lamp, adopt Single-chip Controlling unit and tandem PWM charging main circuit, be provided with DC/DC conversion constant-current source in the output loop of storage battery, be provided with metal-oxide-semiconductor electronic switch Q1, Q2 and Q3 by the Single-chip Controlling unit controls, wherein, electronic switch Q1 and Q2 series connection are arranged in the charge circuit of solar panels to storage battery, and electronic switch Q3 is arranged in the DC/DC conversion constant-current source;
Described Single-chip Controlling unit to the control mode of metal-oxide-semiconductor electronic switch is: during the solar panels generating, if generating voltage keeps below default light-operated switch voltage threshold, and surpass Preset Time more than 1 minute, so just be judged as evening, metal-oxide-semiconductor electronic switch Q1 and Q2 are in off state, Q3 is in the PWM modulation condition, and DC/DC conversion constant-current source is started working, and exports to the led light source operating current; If when generating voltage was higher than default light-operated switch voltage threshold and is lower than battery tension, metal-oxide-semiconductor electronic switch Q1 and Q2 were in off state, Q3 also is in off state, and the output current of constant-current source is zero, no-output; When if generating voltage is higher than default light-operated switch voltage threshold and is higher than battery tension, can be judged as the charged state on daytime, Single-chip Controlling metal-oxide-semiconductor electronic switch Q1 and Q2 are in fully conducting state or efficient PWM working method, charge a battery according to intelligent three stage control modes, after storage battery is full of electricity, enter the floating charge stage, the metal-oxide-semiconductor electronic switch Q3 of control constant-current source conversion is in off state, the output current of constant-current source is zero, and the led light source operating current is zero;
With the open circuit voltage of described solar panels as the detectable signal of judging day and night;
Adopt power resistor sampling led light source operating current at described DC/DC conversion constant-current source outlet side, and implement constant current control, overload and short-circuit protection according to this.
When sunlight intensity changes, the corresponding within the specific limits change of open circuit voltage that the solar panels generating produces.With the 12V solar panels is example, and the excursion representative value of this open circuit voltage is 0～17.5V, and wherein 17.5V is the maximum of the open circuit voltage of solar panels generating generation.Sunlight intensity died down gradually when afternoon, it was black soon, and the open circuit voltage that the solar panels generating produces also diminishes gradually.A little less than sunlight intensity, can regard as separation round the clock to a certain degree (for example smaller or equal to 3LUX (lux)).The open-circuit voltage values that solar panels generating this moment produces is exactly the light-operated switch voltage threshold, this be one with the corresponding open-circuit voltage values of separation round the clock, be a special point, be that its representative value of example is 1.5V with the 12V solar panels.In case open circuit voltage changes to less than 1.5V and kept 1 minute from higher value, single-chip microcomputer inside is by software control ' light-operated switch ' rotary movement, and led light source will be worked, and vice versa.Because this rotary movement by ' light ' control, therefore is referred to as by ' light-operated switch ' visually.Pairing open-circuit voltage values when briefly, ' light-operated switch voltage threshold ' is ' light-operated switch ' generation rotary movement.
Described default light-operated switch voltage threshold is 1.5V, and Preset Time is 1 minute.
Described DC/DC conversion constant-current source adopts BUCK inductance step-down mode to work.
No matter charged side electronic switch Q1 and Q2, the side of still discharging (DC/DC converter) electronic switch Q3, circuit all adopt N-channel MOS pipe anode mode altogether.
Of the present utility model have a following advantage:
Adopt tandem PWM charging main circuit when (1) solar energy is to charge in batteries, the metal-oxide-semiconductor (electronic switch) by the Single-chip Controlling unit controls is set, be connected in the charging major loop, substitute the heavy-duty diode that prevents the storage battery back discharge.Make the loss of voltage and the thermal losses of charge circuit have only the counnter attack of use to fill about 1/4 of diode charging circuit, the high 3%-6% of the more non-PWM of charge efficiency can make solar panel performance maximum effect.By PWM charging circuit (intelligent three stages charging), storage battery is carried out the intelligent charge management, can make storage battery that arranged longer useful life; Simultaneously charging voltage is provided with high-precision temperature compensation circuit.
(2) the led light source circuit adopts BUCK type DC/DC conversion constant-current source, compare with the led light source circuit of the high-power current-limiting resistance of series connection, not only can eliminate the heating loss of high-power resistance, and make it to be converted into available power on the light source, and make the efficient (consuming the power on light source luminescent and the ratio of the input power of power supply circuits) of led light source circuit bring up to 93%～99% from 70%～85%.Ideal operation state owing to led light source is a constant-current driving in addition, therefore the life-span that can also improve led light source greatly.
(3) regular solar LED controller for road lamp is combined with DC/DC conversion constant-current source, be made on the circuit board, can reduce production costs greatly, reduce volume, improve reliability, improve the life-span of storage battery and led light source, improve the charge efficiency of solar energy, improve the operating efficiency of circuit of light sources storage battery.
(4) directly control the electronic switch Q3 of DC/DC converter with the Single Chip Microcomputer (SCM) PWM output pin through drive circuit, the advantage of doing like this is: saved the PWM special integrated circuit, controlled more accurately, responded sooner, output current and power available software are set.
(5) no matter be by charged side electronic switch Q1 and Q2, the side of still discharging (DC/DC converter) electronic switch Q3 all adopts the N-channel MOS pipe.This mode great advantage be N-channel MOS pipe conducting resistance generally relatively the P channel MOS tube is low, thermal losses is lower, therefore can improve the operating efficiency of DC/DC converter.
(6) have light control functionality, as the detectable signal of judging day and night, accuracy of judgement is reliable with the open circuit voltage of solar panels for this product.
(7) have time control and automatic power regulation rate function, lighting hours and mode of operation can be provided with flexibly.Both can be by having revised software setting a plurality of led light source lighting time section and bright lamp watt level of each time period; Also can by single-chip microcomputer LED load lighting time section and bearing power size be set automatically according to daytime charge condition and battery tension or capacity.
(8) the present invention adopts power resistor sampling led light source operating current at the constant-current source outlet side, and implements constant current control, overload and short-circuit protection according to this, has improved the reliability of controller work greatly.
(9) this controller can be discerned automatically to 12V and 24V storage battery, can be suitable for the photovoltaic system of 12V or 24V work automatically.
Description of drawings
Fig. 1 is the utility model solar energy intelligent LED controller for road lamp main circuit block diagram.
Fig. 2 is a DC/DC conversion constant-current source circuit schematic diagram in the utility model.
Embodiment
Detailed description below by embodiment is further illustrated the utility model, but is not to restriction of the present utility model, only does the example explanation.
See also Fig. 1, solar energy intelligent LED controller for road lamp adopts Single-chip Controlling unit and tandem PWM charging main circuit; Be provided with DC/DC conversion constant-current source in the output loop of storage battery, DC/DC conversion constant-current source adopts BUCK inductance step-down mode to work.Be provided with metal-oxide-semiconductor electronic switch Q1, Q2 and Q3 by the Single-chip Controlling unit controls, wherein, electronic switch Q1 and Q2 series connection are arranged in the charge circuit of solar panels to storage battery, and electronic switch Q3 is arranged in the DC/DC conversion constant-current source.
The Single-chip Controlling unit is to the PWM mode that is controlled to be of metal-oxide-semiconductor electronic switch Q1, Q2; In order to drive electronic switch Q1, Q2, be provided with the pwm power drive circuit, this is a kind of push-and-pull drive circuit and level-conversion circuit that typically is made of positive-negative-positive and NPN type triode.
The Single-chip Controlling unit also is the PWM mode to the control of metal-oxide-semiconductor electronic switch Q3 in the DC/DC conversion constant-current source; In order to drive electronic switch Q3, be provided with and isolate pwm power drive circuit KD101, this is that the pwm power driver module is isolated in a kind of special use of being produced by Beijing Da Muyuan company.
The open circuit voltage (open circuit voltage is the generating voltage under the solar panels no-load condition) that produces when generating electricity with solar panels is as the detectable signal of judging day and night.During the solar panels generating, the intensity of illumination that the open circuit voltage of generation is subjected to along with solar panels increases and increases, and corresponding one by one; Therefore the size of open circuit voltage is judged the intensity of illumination that solar panels are subjected in the time of can be according to generating.When this intensity of illumination or ambient light illumination were enough low, Dui Ying open circuit voltage was equally also lower with it, can find one and the corresponding open circuit voltage of separation ambient light illumination round the clock thus.For example when ambient light illumination was 3LUX, the solar panels open circuit voltage approximately was 1.5V.When open circuit voltage is higher than 1.5V, can be judged as daytime, be judged as evening when being lower than 1.5V.
The Single-chip Controlling unit to the control mode of metal-oxide-semiconductor electronic switch is: if generating voltage keeps below default light-operated switch voltage threshold 1.5V, and surpass Preset Time 1 minute, can be judged as evening; Single-chip Controlling unit controls metal-oxide-semiconductor electronic switch Q1 and Q2 are in off state, and Q3 is in the PWM modulation condition, and the led light source operating current is exported in the work of DC/DC conversion constant-current source circuit.If when generating voltage is higher than default light-operated switch voltage threshold 1.5V and is lower than battery tension, can be judged as daytime, Single-chip Controlling metal-oxide-semiconductor electronic switch Q1, Q2 and Q3 all are in off state, and the output current of constant-current source is zero.When if generating voltage is higher than default light-operated switch voltage threshold 1.5V and is higher than battery tension, can be judged as the charged state on daytime, Single-chip Controlling unit controls metal-oxide-semiconductor electronic switch Q1 and Q2 are in fully conducting state or efficient PWM working method, charge in batteries, the metal-oxide-semiconductor electronic switch Q3 of control constant-current source conversion is in off state, and the output current of constant-current source is zero.
Adopt power resistor sampling led light source operating current at DC/DC conversion constant-current source outlet side, and implement constant current control, overload and short-circuit protection according to this.
DC/DC conversion constant-current source circuit adopts typical B UCK inductance step-down mode to work.Main devices has electronic switch Q3, inductance L, and Schottky fast recovery diode D, current sampling resistor R (0.02-0.1 ohm) and light source load are formed.Voltage drop on the sample resistance R equals resistance value and multiply by load current I, is: V=R*I; This voltage is after amplifier LM358 amplifies 20-50 times, sending into the A/D mouth of single-chip microcomputer gathers, and in single-chip microcomputer, pass through computed in software, and compare with given current value, adjust the PWM duty ratio of control electronic switch Q3, the controllable load electric current I keeps stablizing constant in certain error range thus.When load overload current I surpasses set-point and keeps certain hour, single-chip microcomputer is then judged the load overload, turn-offs output electronic switch Q3.
On the other hand with the corresponding sample resistance R of load current I on voltage drop can send into a voltage comparator LM393 simultaneously and given magnitude of voltage compares; When load current I was short-circuited, voltage comparator will overturn, and exported the middle fracture INTO that a low level is given single-chip microcomputer, and after interrupt response took place, single-chip microcomputer then turn-offed output electronic switch Q3 fast.
No matter charged side electronic switch Q1 and Q2, the side of still discharging (DC/DC converter) electronic switch Q3, circuit all adopt N-channel MOS pipe anode mode altogether.
The utility model has used the Single-chip Controlling unit to realize Based Intelligent Control.By the Single-chip Controlling unit terminal voltage of the charging voltage of solar panels, charging current, storage battery, discharging current, ambient temperature etc. being related to the parameter that discharges and recharges control samples, realization meet battery characteristics band temperature-compensating correction discharge and recharge control, adopt the charge mode of efficient PWM storage battery, guarantee that storage battery and led light source are operated in best state, prolong the useful life of storage battery and led light source greatly, improved solar energy the charge efficiency of storage battery and the operating efficiency of circuit of light sources; Have multiple mode of operation, output mode selection, can satisfy the various needs of user.
Claims (4)
1. solar energy intelligent LED controller for road lamp is characterized in that:
Adopt Single-chip Controlling unit and tandem PWM charging main circuit, be provided with DC/DC conversion constant-current source circuit in the output loop of storage battery, be provided with metal-oxide-semiconductor electronic switch first switch (Q1), second switch (Q2) and the 3rd switch (Q3) by the Single-chip Controlling unit controls, wherein, electronic switch first switch (Q1) and second switch (Q2) series connection are arranged in the charge circuit of solar panels to storage battery, and electronic switch the 3rd switch (Q3) is arranged in the DC/DC conversion constant-current source circuit;
Described Single-chip Controlling unit to the control mode of metal-oxide-semiconductor electronic switch is: during the solar panels generating, if generating voltage keeps below default light-operated switch voltage threshold, and surpass Preset Time, metal-oxide-semiconductor electronic switch first switch (Q1) and second switch (Q2) are in off state, the 3rd switch (Q3) is in the PWM modulation condition, the led light source operating current is exported in the work of DC/DC conversion constant-current source; If when generating voltage was higher than default light-operated switch voltage threshold and is lower than battery tension, metal-oxide-semiconductor electronic switch first switch (Q1), second switch (Q2) and the 3rd switch (Q3) all were in off state, the output current of constant-current source is zero; When if generating voltage is higher than default light-operated switch voltage threshold and is higher than battery tension, metal-oxide-semiconductor electronic switch first switch (Q1) and second switch (Q2) are in fully conducting state or efficient PWM working method, charge in batteries, metal-oxide-semiconductor electronic switch the 3rd switch (Q3) is in off state, and the output current of constant-current source is zero;
With the open circuit voltage of described solar panels as the detectable signal of judging day and night;
Adopt power resistor sampling led light source operating current at described DC/DC conversion constant-current source outlet side, and implement constant current control, overload and short-circuit protection according to this.
2. solar energy intelligent LED controller for road lamp according to claim 1 is characterized in that: described default light-operated switch voltage threshold is 1.5V, and Preset Time is 1 minute.
3. solar energy intelligent LED controller for road lamp according to claim 1 is characterized in that: described DC/DC conversion constant-current source adopts BUCK inductance step-down mode to work.
4. solar energy intelligent LED controller for road lamp according to claim 1 is characterized in that: charged side electronic switch first switch (Q1) and second switch (Q2), discharge side electronic switch the 3rd switch (Q3) all adopts N-channel MOS pipe anode mode altogether.
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2008201113666U CN201182028Y (en) | 2008-04-17 | 2008-04-17 | Solar intelligent LED street lamp controller |
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| CNU2008201113666U CN201182028Y (en) | 2008-04-17 | 2008-04-17 | Solar intelligent LED street lamp controller |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771289A (en) * | 2010-02-26 | 2010-07-07 | 北京普泰日盛新能源科技有限公司 | Voice-intelligent solar control system |
| CN101924386A (en) * | 2010-09-10 | 2010-12-22 | 重庆辉腾光电有限公司 | Charging-discharging controller of solar street lamp |
| CN101800435B (en) * | 2009-02-09 | 2014-01-15 | 半导体元件工业有限责任公司 | Method of forming a control circuit and device |
| 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 |
| CN105554980A (en) * | 2015-12-31 | 2016-05-04 | 山东贵德信息科技有限公司 | Solar street lamp-based intelligent management system for urban illumination |
| CN106132026A (en) * | 2016-08-16 | 2016-11-16 | 深圳英利新能源有限公司 | New type solar energy street lamp |
| CN106793394A (en) * | 2016-12-15 | 2017-05-31 | 上海理工大学 | Highway lighting system and control method |
| CN107155239A (en) * | 2017-07-04 | 2017-09-12 | 西南大学 | A kind of method and apparatus for adjusting solar street light lighting power |
| CN108425121A (en) * | 2018-03-07 | 2018-08-21 | 成都天誉立信科技有限公司 | A kind of method for realizing low power consumption for cathodic protection monitoring device |
| CN111148318A (en) * | 2018-10-16 | 2020-05-12 | 江苏万邦微电子有限公司 | Heavy-current driving LED control circuit |
| CN111425827A (en) * | 2018-12-24 | 2020-07-17 | 东汉新能源汽车技术有限公司 | Automatic lighting system of solar automobile and operation method thereof |
| CN113078878A (en) * | 2021-05-06 | 2021-07-06 | 苏州禾望电气有限公司 | PV (photovoltaic) string optimizer and short-circuit protection method thereof |
| CN113316292A (en) * | 2021-06-29 | 2021-08-27 | 杭州火石照明有限公司 | TLCC drive circuit of automatic protection of excess temperature |
| CN114333636A (en) * | 2021-12-03 | 2022-04-12 | 江苏航天大为科技股份有限公司 | Full-transparent type luminous label controller |
-
2008
- 2008-04-17 CN CNU2008201113666U patent/CN201182028Y/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800435B (en) * | 2009-02-09 | 2014-01-15 | 半导体元件工业有限责任公司 | Method of forming a control circuit and device |
| CN101771289A (en) * | 2010-02-26 | 2010-07-07 | 北京普泰日盛新能源科技有限公司 | Voice-intelligent solar control system |
| CN101924386A (en) * | 2010-09-10 | 2010-12-22 | 重庆辉腾光电有限公司 | Charging-discharging controller of solar street lamp |
| 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 |
| CN105554980A (en) * | 2015-12-31 | 2016-05-04 | 山东贵德信息科技有限公司 | Solar street lamp-based intelligent management system for urban illumination |
| CN106132026B (en) * | 2016-08-16 | 2018-01-26 | 深圳英利新能源有限公司 | New type solar energy street lamp |
| CN106132026A (en) * | 2016-08-16 | 2016-11-16 | 深圳英利新能源有限公司 | New type solar energy street lamp |
| CN106793394A (en) * | 2016-12-15 | 2017-05-31 | 上海理工大学 | Highway lighting system and control method |
| CN107155239A (en) * | 2017-07-04 | 2017-09-12 | 西南大学 | A kind of method and apparatus for adjusting solar street light lighting power |
| CN107155239B (en) * | 2017-07-04 | 2019-07-19 | 西南大学 | A method and device for adjusting the lighting power of a solar street lamp |
| CN108425121A (en) * | 2018-03-07 | 2018-08-21 | 成都天誉立信科技有限公司 | A kind of method for realizing low power consumption for cathodic protection monitoring device |
| CN111148318A (en) * | 2018-10-16 | 2020-05-12 | 江苏万邦微电子有限公司 | Heavy-current driving LED control circuit |
| CN111425827A (en) * | 2018-12-24 | 2020-07-17 | 东汉新能源汽车技术有限公司 | Automatic lighting system of solar automobile and operation method thereof |
| CN113078878A (en) * | 2021-05-06 | 2021-07-06 | 苏州禾望电气有限公司 | PV (photovoltaic) string optimizer and short-circuit protection method thereof |
| CN113316292A (en) * | 2021-06-29 | 2021-08-27 | 杭州火石照明有限公司 | TLCC drive circuit of automatic protection of excess temperature |
| CN114333636A (en) * | 2021-12-03 | 2022-04-12 | 江苏航天大为科技股份有限公司 | Full-transparent type luminous label controller |
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