CN201976292U - High-efficiency solar energy illuminating system - Google Patents

Abstract

The utility model discloses a high-efficiency solar energy illuminating system. Electricity energy is provided by a polysilicon solar energy photovoltaic module array with no-load output of 60V. A solar energy charging controller is connected with the polysilicon solar energy photovoltaic module array; the solar energy charging controller is connected with an intelligent power supply controller formed on the basis of an uninterruptible power supply switching controller controlled by a singlechip; a storage battery comprising 18 single 36V deep-cycle sealing maintenance-free lead-acid storage batteries is connected between the solar energy charging controller and the intelligent power supply controller; the other input end of the intelligent power supply controller is connected with a rectifier voltage regulator electrically connected with mains supply; and the output end of the intelligent power supply controller is connected with an automatic light modulator and an LED lamp group in order. The system is characterized in that 36V low-voltage direct current drives the LED lamp group without the intermediate alternating current and direct current conversion link, electric energy consumption in the process is effectively avoided, and comprehensive electric energy consumption is lowered by more than 60%; photodetection pulse-width modulation (PWM) is used for controlling and driving an integrated circuit (IC), and the luminance of the LED lamp is automatically and duly regulated; the high-efficiency solar energy illuminating system is mainly applied to markets, hotels, schools, office buildings and the like which require more illuminating lamps, is also suitable for occasions with higher illumination intensity and even distribution and is also suitable for family illuminating systems.

Description

The high-efficiency solar illuminator

Technical field:

The utility model relates to the solar energy and semiconductor lighting technology, specifically is the high-efficiency solar illuminator.

Background technology:

The common LED light fixture disposes driving constant-current power, but does not possess dimming function, and in the AC/DC transfer process electric energy loss more than 15% is arranged.Existing in addition solar illuminating system is battery charging all for providing electric energy by the photovoltaic module array, by inverter the direct current energy of storage battery is transformed into the 220V electric main again, and supplies with the lamp system electricity consumption.This type of illuminator exist inverter the defectives such as fail safe reduction brought of intrinsic AC-DC conversion electric energy loss and 220V electric main.

The utility model content:

The utility model is novel to provide a kind of high-efficiency solar illuminator.

Adopt the relatively low polycrystalline silicon solar photovoltaic module array of cost that electric energy is provided, charge by solar charging controller accumulators group, afterwards again through intelligent power controller, device with an automatic light meter, give the power supply of LED lamp group, can regulate brightness automatically according to ambient light illumination, only illuminating effect is provided.The effect of intelligent power controller is the profit and loss situation that the monitoring batteries stores electric weight, switches to incessantly by the batteries power supply or by the civil power supplementary power.

The utility model comprises the photovoltaic module array, batteries, inverter, LED light fixture and supporting driving constant-current power thereof, what electric energy was provided in the utility model is the polycrystalline silicon solar photovoltaic module array ofunloaded output 60V, solar charging controller connects polycrystalline silicon solar photovoltaic module array, solar charging controller is connecting the intelligent power controller that forms based on monolithic processor controlled uninterrupted power supply switch controller, between solar charging controller and intelligent power controller, be connected the batteries of forming by the dark circulation sealed lead-acid accumulator free from maintenance of 18monomer 36V altogether, another input of intelligent power controller is connecting the rectifying pressurizer that inserts civil power, the output of the intelligent power controller device with an automatic light meter that is being linked in sequence, LED lamp group.

In solar charging controller, the zero load output that polycrystalline silicon solar photovoltaic module array provides inserts charge controller, charge controller is connecting IGBT and display, behind IGBT, connect batteries, current detecting sample resistance R1 in parallel is provided with the voltage detecting loop between charge controller and batteries on the circuit of charge controller and IGBT.

Connect unidirectional controllable silicon S CR at the batteries output that enters the intelligent power controller, theK switch 1 ofrelay 1 in parallel before and after the unidirectional controllable silicon S CR,K switch 1 connects Schottky reverse blocking diode pipe, single-chip microcomputer (MCU) is connectingrelay 1,relay 2 and controllable silicon SCR respectively, and theK switch 2 ofrelay 2 connects rectifying pressurizer.

In rectifying pressurizer; civil power input low frequency current rectifying and wave filtering circuit; high-frequency inverter circuit, high frequency transforming circuit, rectifier filter circuit are being linked in sequence behind the low frequency current rectifying and wave filtering circuit; high-frequency inverter circuit also connects PWM controller, fault secure circuit respectively; rectifier filter circuit is also connecting fault secure circuit; the output of rectifying pressurizer also connects voltage stabilization and current stabilization control and fault secure circuit respectively, and the PWM controller also connects voltage stabilization and current stabilization control and fault secure circuit respectively.

Be linked in sequence behind the PWM controller (pulse-width modulator) in the device with an automatic light meter VMOS great power LED drive IC and LED lamp group, LED lamp group also connects photosensitive sensing resistor RL.

1, adopt output voltage higher relatively (unloaded output 60V), the relatively low polysilicon " photovoltaic module array " of cost provides electric energy.Compare with low-voltage photovoltaic module array, be similar to remote high voltage power transmission principle, under the situation of identical power output, the whole system loaded current obviously reduces, power transmission loss reduces more than 8%, and more helps the adjusting control to LED lamp group.

2, the electric energy that provides of photovoltaic module array by " solar charging controller " to the batteries control of charging: when the batteries terminal voltage is lower than 48V (monomer 2.7V), be main charged state; When being equal to and greater than 48V, stopping charging, and keep little electric current floating charge state.This controller can limit the maximum charging current of batteries, avoids damaging pole plate because of electric current is excessive, shortens its useful life.

The core of whole solar charging controller is charge controller and IGBT, and charge controller is monolithic processor controlled pulse-width modulator (PWM), and IGBT is a high-frequency high-power switching device module.When the terminal voltage of batteries was lower than 32.4V (monomer 1.8V), charge controller increased the pulse duty factor of IGBT switch control, and the IGBT output voltage increases, and the charging current of accumulators group also increases; Otherwise the charging current of accumulators group reduces.So just realized automatic control to battery charging.The acting as of " current detecting " detected and the maximum charging current of restriction batteries, in order to avoid cause adverse effect excessive actual life to storage battery because of electric current.The effect of " display " is to show the operating state of this controller and parameters such as voltage, electric current in real time.

3, " batteries " selects the dark circulation sealed lead-acid accumulator free from maintenance of 18 monomers (lattice) 36V altogether for use.This is with automobile storage battery (belonging to shallow cycle battery) difference, and dark circulating storage battery can discharge the electric energy of also Duoing than storage of electrical energy, and can keep long useful life.

4, intelligent power controller: this is a kind of based on monolithic processor controlled low-loss uninterrupted power supply switch controller, the intelligent program control output that its control core is a single-chip microcomputer (MCU).(1) when the terminal voltage of batteries was lower than 32.4V (monomer 1.8V), batteries was in the power shortage state: the K1 not adhesive of contact ofrelay 1, controllable silicon SCR are turn-offed, and batteries is stopped power supply; The K2 contact adhesive ofrelay 2, LED lamp group is by the civil power supplementary power.(2) when the terminal voltage of batteries surpasses 32.4V (monomer 1.8V), the batteries electric weight is enough, SCR is conducting at first, the K1 contact adhesive of the K2 contact ofrelay 2 disconnection then,relay 1, electric current by SCR is kept electric current less than it, SCR turn-offs at once, avoids the power consumption that is caused by its forward conduction voltage drop.At this moment batteries through K1 and Schottky reverse blocking diode pipe (forward conduction voltage drop is very little) to LED lamp group uninterrupted power supply.So circulation has realized the uninterrupted switching of batteries and mains-supplied.

This controller is compared with the controller for solar of the same type of circuit complexity, its functional reliability height, and hardware cost is lower.Because only moment use when power supply switches of controllable silicon SCR, its conduction loss can be ignored substantially, Schottky reverse blocking diode pipe forward conduction voltage drop only is that actual power loss is very little about 0.5V, and inactivity consumes when remaining relay mechanical contact K1, K2 adhesive.Therefore, whole power transmission loss has been reduced to minimum.

5, rectifying pressurizer: mainly form the high-frequency switching power supply system by circuit such as low frequency rectifying and wave-filtering, high-frequency inversion, high frequency transformation, filtering high-frequency rectifier, PWM control, voltage stabilization and current stabilization control and error protections.Civil power 220V exchanges input during work, add to the high-frequency inverter circuit of forming by insulated gate bipolar transistor IGBT through the low frequency current rectifying and wave filtering circuit, convert the adjustable high-frequency ac of pulsewidth (about 20KHz) to by main circuit wherein, be converted to the 36V low-voltage DC that is fit to work requirements through the step-down of high frequency transforming circuit, rectifier filter circuit (Schottky diode) rectification again.

Above-mentioned high-frequency inverter circuit adopts full-bridge phase shifting zero voltage switch main circuit, and adopts soft switch technique, to realize high-power low-loss high-frequency inversion.The HF switch pipe adopts the high-power IGBT module, can improve power supply reliability, and the high-frequency rectification pipe adopts the Schottky rectification module to improve whole efficiency.

The control signal of voltage stabilization and current stabilization control, the output of PWM control unit can be made rapid response to main circuit output; not only can provide good dynamic and static output characteristic, and can the fluctuation of various input voltages be compensated, can make the fault that a variety of causes causes and protect response rapidly.

Compare with domestic and international same category of device, this rectifying pressurizer manufacturing cost is lower.Because art designs such as adopt that the control of PWM high frequency, soft switch and switching device no-voltage are opened, its input power factor is up to 0.955, and switching loss is very low, and energy transmission efficiency obviously improves.Have energy-efficient, reliable and stable, good characteristic such as volume is little, in light weight.

5, device with an automatic light meter: specifically partly form by photosensitive sensing resistor RL, PWM control (pulse-width modulator), VMOS great power LED drive IC etc.The current waveform of LED drive IC output is a square wave, and this wave frequency and duty ratio are all identical with outside pwm control signal, and the mean value of electric current equals the product of output current amplitude and duty ratio.When the duty ratio of outside pwm control signal changed, the duty ratio of LED drive IC output current also changed thereupon, and synchronous with its maintenance.Like this, the mean value of output current just changes along with the change in duty cycle of outside pwm control signal.When the ambient light illumination deepening, it is big that the resistance value of photosensitive sensing resistor RL becomes, and the duty ratio of pwm control signal increases, and the duty ratio of LED drive IC output current also increases, and the mean value of output current increases, and LED lamp group brightens; Otherwise, when ambient light illumination brightens, the deepening of LED lamp group.So, just realized LED lamp group being carried out the control automatically in real time of required brightness according to different ambient brightnesss.

This illuminator be need not middle AC-DC conversion link, thereby has effectively been avoided the electric energy loss of this process by 36V low-voltage DC driving LED lamp group; More, can automatically, in time regulate the brightness of LED lamp according to the ambient light illumination situation owing to adopted light sensing PWM controlling and driving IC.With adopting alternating current-direct current inversion conversion, electronic transformer constant-current supply to drive, not have the similar scheme of function with an automatic light meter and compare, whole efficiency increases substantially, and comprehensive electric energy loss minimizing reaches more than 60%, and also obviously prolong the useful life of LED light fixture.

This illuminator is mainly used in market, hotel, school, office building etc. needs a greater number lighting, and requires the place that brightness of illumination is higher, be evenly distributed.Equally also can be used for the domestic lighting system.Pluses and minuses: can reduce the comprehensive electric consumption of using of illuminator significantly, reliable operation, failure rate is low, long service life, no work noise, no exhaust emission etc.Compare with similar solar photovoltaic generation system, it is lower to have manufacturing cost, whole power consumption efficiency advantages of higher.Directly adopt the 36V low-voltage power supply owing to LED lamp group again, so electricity consumption is safer, power saving rate is higher, the failure rate and the maintenance cost of light fixture itself decrease, and obviously prolong useful life.

Description of drawings:

Fig. 1 is a high-efficiency solar illuminator schematic diagram of the present utility model;

Fig. 2 is the solar charging controller schematic diagram;

Fig. 3 is an intelligent power controller schematic diagram;

Fig. 4 is a scm software program module block diagram;

Fig. 5 is the rectifying pressurizer schematic diagram;

Fig. 6 is a device schematic diagram with an automatic light meter.

Embodiment:

In the utility model, Fig. 1 is seen in the concrete connection of each parts.

1, photovoltaic module array: selecting the total capacity parameter for use is 60V, 80A, and rated output power 4500W specifically is made up of by internal series-connection and mode in parallel polysilicon monomer module.

2, solar charging controller: major control device IGBT selected parameter is the product of 120V/150A, the current detecting sample resistance is that (the capacity ampere-hour according to batteries is counted AH to 0.5 Ω, and promptly the allowable upper limit value I of the charging current of controlling calculates and determines: R=V/ (AH/10).The concrete connection seen Fig. 2.

3, batteries: select the dark circulation sealed lead-acid accumulator free from maintenance of 18 monomers (lattice) 36V altogether for use, total capacity is 650 ampere-hours.

4, intelligent power controller: the one-way SCR selected parameter is the product of 120V/150A, Schottky reverse blocking diode pipe is 100V/150A,relay 1 andrelay 2 are 12V/150A (direct current), and single-chip microprocessor MCU is the program that 51 series and programming have write.The concrete connection seen Fig. 3, and the scm software program is seen Fig. 4.

5, rectifying pressurizer: major control device IGBT selected parameter is the product of 120V/150A, and the about 20KHz of operating frequency, output voltage are the 36V direct current.The concrete connection seen Fig. 5.

6, device with an automatic light meter (three groups of A, B, C): photosensitive sensing resistor RL is chosen to be 20K Ω/1W according to the starting point illumination threshold values of required adjusting, and the PWM controller selects for use pulsewidth modulated intergrated circuit UC3842AN, VMOS great power LED drive IC to select great power LED drive integrated circult SMD802 for use.LED lamp group (three groups of A, B, C): single lamp power 5W, every group of gross power 1400W, three combination meter power 4200W.The concrete connection seen Fig. 6.

This programme drives three groups of LED lamp groups by the 36V low-voltage DC, and the AC-DC conversion link in the middle of not having, and adopted light sensing PWM controlling and driving IC simultaneously can be according to ambient light illumination, automatically, the brightness of timely adjustment LED lamp.

Claims (5)

1. high-efficiency solar illuminator, comprise the photovoltaic module array, batteries, inverter, LED light fixture and supporting driving constant-current power thereof, it is characterized in that: what electric energy was provided is the polycrystalline silicon solar photovoltaic module array of unloaded output 60V, solar charging controller connects polycrystalline silicon solar photovoltaic module array, solar charging controller is connecting the intelligent power controller that forms based on monolithic processor controlled uninterrupted power supply switch controller, between solar charging controller and intelligent power controller, be connected the batteries of forming by the dark circulation sealed lead-acid accumulator free from maintenance of 18 monomer 36V altogether, another input of intelligent power controller is connecting the rectifying pressurizer that inserts civil power, the output of the intelligent power controller device with an automatic light meter that is being linked in sequence, LED lamp group.

2. high-efficiency solar illuminator according to claim 1, it is characterized in that: in solar charging controller, the zero load output that polycrystalline silicon solar photovoltaic module array provides inserts charge controller, charge controller is connecting IGBT and display, behind IGBT, connect batteries, current detecting sample resistance R1 in parallel is provided with the voltage detecting loop between charge controller and batteries on the circuit of charge controller and IGBT.

3. high-efficiency solar illuminator according to claim 1, it is characterized in that: connect unidirectional controllable silicon S CR at the batteries output that enters the intelligent power controller, the K switch 1 of relay 1 in parallel before and after the unidirectional controllable silicon S CR, K switch 1 connects Schottky reverse blocking diode pipe, single-chip microcomputer is connecting relay 1, relay 2 and controllable silicon SCR respectively, and the K switch 2 of relay 2 connects rectifying pressurizer.

4. high-efficiency solar illuminator according to claim 1; it is characterized in that: in rectifying pressurizer; civil power input low frequency current rectifying and wave filtering circuit; high-frequency inverter circuit is being linked in sequence behind the low frequency current rectifying and wave filtering circuit; the high frequency transforming circuit; rectifier filter circuit; high-frequency inverter circuit also connects the PWM controller respectively; fault secure circuit; rectifier filter circuit is also connecting fault secure circuit; the output of rectifying pressurizer also connects voltage stabilization and current stabilization control and fault secure circuit respectively, and the PWM controller also connects voltage stabilization and current stabilization control and fault secure circuit respectively.

5. high-efficiency solar illuminator according to claim 1 is characterized in that: the VMOS great power LED drive IC that is being linked in sequence behind the PWM controller in the device with an automatic light meter and LED lamp group, LED lamp group also connects photosensitive sensing resistor RL.

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