CN100523587C - Radiating control emergency lighting integrated thick-film packaged LED lighting lamp tube - Google Patents
Radiating control emergency lighting integrated thick-film packaged LED lighting lamp tube Download PDFInfo
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- CN100523587C CN100523587C CNB2006101051928A CN200610105192A CN100523587C CN 100523587 C CN100523587 C CN 100523587C CN B2006101051928 A CNB2006101051928 A CN B2006101051928A CN 200610105192 A CN200610105192 A CN 200610105192A CN 100523587 C CN100523587 C CN 100523587C
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Abstract
The invention relates to an energy-efficient LED lighting lamps consisting of the control circuit board , a radiator shell of battery and the lamp luminous body installed in the shell of tube. Lamp luminous body with a thick film encapsulated LED chip array of aluminum circuit boards, In the circuit board side with a package of slot allocation phosphor-ray lens. The invention of the control circuit mainly consists of controller, emergency lighting controller and the charge-discharge controller. Actual production, through a wide input voltage range, automatic brightness control temperature, pressure BUCK circuit switching power supply, battery charge and discharge control circuit, such as emergency lighting controller encapsulated in the crust of the lamp.Will make LED panels, radiators, power control, batteries, battery maintenance control, emergency lighting control, the various components, lamp holder.etc to be unified design.A tubular structure of the integration of the LED light source, the LED light source to meet the special requirements and supporting common with the traditional lighting.
Description
Affiliated technical field
Content of the present invention belongs to semiconductor lamp (LED) technical field, relates to a kind of energy-efficient multifunctional all LED illuminating lamp tube.
Background technology
So far in all kinds of electric equipments the power consumption maximum be lighting apparatus.The annual electric consumption on lighting amount of China accounts for about 20% of national annual gross generation at present, but the semi-conductor lighting lamp of employing saves energy makes up the key factor of energy-efficient society beyond doubt.In recent years; along with national Green Lighting Project starts; the National Development and Reform Commission etc. are multidisciplinary to be organized in concert and has implemented to be intended to saves energy, protects environment, improves the activity of lighting quality, and semi-conductor lighting lamp is as the major product of clearly applying in " national Green Lighting Project ".
The illuminator of the known LED fluorescent tube of LED lighting field all adopts the array of being made up of many LED lamp pearls at present, the LED lamp is made up of parts such as luminescence chip, power supply lead wire, package lens by pearl, energy consumption is less though product has, life-span advantages such as length, good environmental protection, and it still has the problem of following end in actual use.
1, because LED lamp pearl is selected the lead-in wire dongle configuration for use, heat radiation is complete in two wires, and in the course of work, the heat that the LED luminescence chip produces can not effectively distribute, and long-term heat accumulation can reduce the luminous efficiency of LED, makes LED produce quick light decay.In actual engineering is used,, have to adopt reduce the method that LED uses electric current and LED luminous power, so also just reduced light utilization efficiency and the light distribution effect of LED to a great extent in order to reduce the LED temperature.
2, LED needs dc low-voltage constant current power supply, in order to improve power supplying efficiency, generally all adopts Switching Power Supply to provide the low pressure constant-current supply for LED when input supply voltage is higher.Switching Power Supply working method with usual employing has: step-down modes such as inverse-excitation type, positive activation type, chopped mode, aforesaid way has deficiencies such as circuit is complicated, cost is higher, the control power consumption is higher, the power device back-pressure is higher, input voltage range is lower when being used for the low-power LED power supply.
3, in the array that is composed in series by many LED, because each LED component parameters is not exclusively the same, the luminous site of wherein bearing the chip of the big element of power consumption will be because of overheated and damage, and when the LED temperature is too high, its luminous efficiency is sharply reduced, produce serious semiconductor light decay, shorten the life-span of LED.
4, present known LED illuminating lamp can not carry out brilliance control, is unfavorable for service life energy-conservation better and prolongation LED.
5, in the prior art, because the power of single LED lamp less (3W is following), still do not reach the lighting requirement of most occasions, so when forming lighting by the LED lamp, single LED lamp must be formed array by the series, parallel mode, as long as will appear at the phenomenon that has a LED lamp open circuit just to cause this paths of LEDs lamp all to extinguish in the series arm like this in the use, have a strong impact on illuminating effect.In addition, the led array lamp that is combined by the serial or parallel connection mode by a plurality of LED lamps in the course of the work, because the forward voltage drop of LED has certain dispersiveness, for its forward current is remained unchanged, LED lamp battle array generally all adopts the power supply of constant current drive pattern at present, common compound mode is string and series-parallel connection, in this series and parallel circuit, for realizing that every LED constant current drives, generally be in each parallel branch, to seal in current sampling resistor, then the current sampling signal of each branch road is delivered in the comparator and compared with reference signal, error signal through amplifying after the constant-current source controller that PWM controller and power switch pipe constitute is controlled the electric current of each branch road, thereby realize that constant current drives, but when adopting this control mode, each parallel circuit all needs independent driving circuits.Therefore parallel branch is many more, and the cost of drive circuit is high more, and the probability that produces fault is also high more.
6, the emergency lighting system power in present various places is all very big, so the EPS Emergency Lighting Supply must be exported enough big power, and keep certain emergency lighting time, therefore the capacity of required battery is very big, and the power output of charger and inverter is also very big.When big and emergency lighting area coverage was big when the EPS system power, the cost of LED lamp system, engineering cost and maintenance cost were all very high; On the other hand, when the emergency lighting area coverage is big,, will cause large area lighting to interrupt, cause great economic loss in case the EPS illuminator breaks down.In addition, in the course of work of present LED lamp system, electric main at first by charger to battery charge, power to lighting by inverter again, energy is bigger through loss after the multiple conversions, conversion efficiency is very low.
7, except that the problems referred to above, existing LED fluorescent tube has also that cost is higher, safe insulation is poor, be unfavorable for deficiency such as regular maintenance cleaning.
Summary of the invention
The present invention is intended to overcome the deficiency that prior art exists, so provide a kind of novel structure,, perfect heat-dissipating low, cost with power consumption under the equiluminous low, be easy to install and the regular maintenance cleaning, can with the radiating control emergency lighting integrated thick-film packaged LED lighting lamp tube of the supporting general and good illumination effect of conventional lamp.
The objective of the invention is that technical solution by the following stated realizes: this LED illuminating lamp tube is provided with the Aluminium Radiator shell of automatic control circuit board and battery by housing and the lamp luminescence body that is installed on the Aluminium Radiator shell is formed, inventive point wherein comprises: one, said lamp luminescence body has a nickel-plated aluminum base circuit board that can fasteningly be contained in the Aluminium Radiator shell, be packaged with many LED luminescence chips of forming determinant lamp battle array at nickel-plated aluminum base circuit board upper surface thick film, above aluminium base circuit board, be packaged with epoxy or silicon rubber system light-distribution lens, open near the surface of LED luminescence chip at light-distribution lens and to be shaped on rectangle fluorescent material groove, evenly adding in groove has fluorescent material; Two, the control circuit that is provided with on automatic control circuit board is made up of master controller, emergency lighting controller able and charging-discharging controller, the battery charge-discharge control circuit that charging-discharging controller and battery are formed is connected in parallel on the two ends of master controller, the output of battery charge-discharge control circuit by emergency lighting controller able be connected in luminescence chip one or more or all on the input of LED series lamp row.In concrete the enforcement, be packaged in mode in the fluorescent tube shell in the lump by having wide input voltage range, automatic temperature-adjusting brilliance control, self adaptation dividing potential drop BACK contactor power supply, battery, battery charge-discharge control circuit, emergency lighting controller able etc., with the unified design of each parts such as LED package board, radiator, control power supply, battery, battery service control, emergency lighting control, lamp holder, lens, form the integral structure of tubular type led light source.This integral structure has satisfied the specific (special) requirements of led light source, has versatility simultaneously, can be supporting general with conventional lamp, expanded the engineering range of application of LED illumination dramatically.
Description of drawings
Fig. 1 is the mounting structure schematic diagram of an embodiment of the present invention.
Fig. 2 overlooks to structural representation for Fig. 1's.
Fig. 3 is the structural representation of the voltage regulation type semi-conductor lighting lamp of the composition LED luminescence chip array of the present invention's employing.
Fig. 4 is a circuit working theory diagram of the present invention.
Fig. 5 is the electrical block diagram of a specific embodiment of the present invention.
Fig. 6 is the electrical block diagram of a specific embodiment of emergency lighting controller able.
The specific embodiment
Below with reference to drawings and Examples content of the present invention is described further, but actual fabrication structure of the present invention is not limited in following embodiment.
Referring to Fig. 1～Fig. 2, radiating control emergency lighting integrated thick-film packaged LED lighting lamp tube of the present invention partly is made up of with battery 2, light-distribution lens 4 and lamp luminescence body etc. Aluminium Radiator shell 7, automatic control circuit board 1, emergency lighting, lamp luminescence body wherein constitutes by being packaged with many nickel-plated aluminum base circuit boards 5 of forming the LED luminescence chip 6 of determinant lamp battle array on it, and the control circuit that is provided with on the automatic control circuit board 1 comprises master controller 11, emergency lighting controller able 12 and charging-discharging controller 13.
In structure embodiment illustrated in fig. 1, employing is encapsulated in blue light emitting chip (BLED) 6 direct banded thick films on the aluminium base circuit board 5 of plating nickel on surface, be made into nickel-plated aluminum base circuit board BLED luminous plaque, again the BLED luminous plaque is fastened on 7 li of Aluminium Radiator shells, the product heat dispersion has been improved more than 3 times, greatly reduce the BLED temperature, prolonged the service life of BLED, can strengthen the electric current that passes through of single BLED in the work, increase the BLED luminous power, effectively improve the BLED light utilization efficiency, and under the same brightness condition, reduced the BLED usage quantity, reduced the cost of BLED light source.Adopt in addition at conventional aluminium base circuit board copper foil surface and electroplate 10 μ m nickel foils, single BLED directly is welded on the nickel foil surface, be coated with last layer printing opacity silicon rubber, BLED and solder joint are protected, improve tensile strength and anti-oxidation at BLED and solder joint surface.Compare with aluminium base circuit board Copper Foil surface gold-plating technology commonly used, can reduce the circuit board cost dramatically.The BLED luminous plaque is made with length (300mm), width in that (the basic BLED luminous plaque power model between 20～30mm), nickel-plated aluminum base circuit board 5 can or be spliced to form by the basic BLED luminous plaque of polylith power model by one.In actual light fixture product: two basic BLED luminous plaque power models are spliced into (600mm) standard tubular BLED light source; Three basic BLED luminous plaque power models are spliced into (900mm) standard tubular BLED light source; Four basic BLED luminous plaque power models are spliced into (1200mm) standard tubular BLED light source, to reduce BLED luminous plaque encapsulation difficulty, reduce cost, and improve the volume production ability.Because aluminium base circuit board 5 radial distances are short by (20～30mm) and lateral separation long (300～1200mm), encapsulation should be packaged into radially (shown in arrow points among Fig. 2) with BLED luminescence chip 6 when making on aluminium base circuit board 5, chip does not have lateral stressed, damages fracture BLED luminescence chip and lead-out wire when avoiding the horizontal long generation type of BLED luminous plaque to become.Light-distribution lens 4 is encapsulated in aluminium base circuit board 5 tops, adopt high transparent material of light transmittance height, mechanical strength height, electric simulation strength such as epoxy or silastic material to make, can improve the safety index of WLED fluorescent tube significantly, improve the electric safety in utilization of WLED fluorescent tube.What the BLED light source board that is made up by many BLED produced is blue light, and the surface is a graininess, and its floodlight effect is discontinuous, and the graininess on surface also is unfavorable for the regular maintenance cleaning, and safe insulation is poor.The present invention adopts encapsulation yellow fluorescent powder light-distribution lens 4 above the aluminium base luminous plaque of BLED.Be made into degree of depth 1mm width 3mm rectangle fluorescent material groove at the inner close banded BLED surface portion of these lens, (4000～6500K) evenly add suitable dosage gold-tinted fluorescent material 3, the LED fluorescent tube is sent meet the white light that colour temperature requires by the requirement of white light LEDs (WLED) colour temperature in this groove.The structural limitations of fluorescent material groove of the present invention fluorescent material leak, convenient control fluorescent material dosage is with control LED fluorescent tube colour temperature; Fluorescent material groove inwall and BLED close together help the fluorescent material gold-tinted and excite; Fluorescent material 3 is uniformly in the fluorescent material groove, and the blue dot light source that can produce BLED on light-distribution lens 4 surfaces is converted into continuous white light band; The lens surfaces externally and internally is smooth, and outer surface is the cylindrical convex lens form, can be the stronger center white light band scattering of LED fluorescent tube light intensity the continuous white light of the soft large tracts of land of light intensity, improves light distribution effect greatly; Smooth in addition lens outer surface helps the regular maintenance cleaning, and furthermore the whole LED fluorescent tube is only used a light-distribution lens 4 and compared by the LED luminous plaque that plurality of LEDs makes up, and cost can significantly reduce.
The radiator shell 7 of this fluorescent tube adopts aluminums to make, and it has good heat dissipation characteristics, have also that cost of manufacture is low, rigidity and durability is good, can be for convenience detach and characteristics such as be easy to combine with the aluminium base circuit board of BLED, in light weight.The lamp holder of lamp tube ends adopts dielectric strength height, high temperature resistant, ageing-resistant engineering plastics to make, can be compatible fully with the lamp holder of common fluorescent lamp, to install very conveniently, and built-in sensor devices in lamp holder uses also as safe as a house.
As long as for overcoming the defective that in a LED lamp series arm, has a LED lamp open circuit just to cause this paths of LEDs lamp all to extinguish that exists in the prior art; the present invention is each voltage-stabiliser tube 61b in parallel at the two ends of every the semi-conductor lighting lamp 61a that constitutes LED luminescence chip 6 arrays, forms a kind of self-protection semi-conductor lighting lamp 61 as shown in Figure 3.LED conduction voltage drop 2.8-3.6V adopts the 4V voltage-stabiliser tube.Like this, when LED lamp 61a operate as normal, forward voltage is less than the breakdown voltage of voltage-stabiliser tube 61b, and voltage-stabiliser tube 61b has no effect to lighting circuit; When wherein LED lamp 61a open circuit, the voltage-stabiliser tube 61b in parallel with it punctures because of the voltage that bears is higher, thereby makes other LED work as usual in this series arm, thereby the assurance illuminating effect is unaffected.In the course of the work, when driving voltage was too high, the overtension that the LED lamp bears might damage the LED lamp, and after adopting above-mentioned resist technology, just the voltage of each LED lamp can be limited in below the 4V, guaranteed the trouble free service of LED etc.In order to reduce the cost of holding circuit, also can adopt the structure of many series LED lamps with a voltage-stabiliser tube protection.
The operation principle of the control circuit of LED illuminating lamp tube of the present invention comprises master controller 11, emergency lighting controller able 12 and 13 3 groundwork parts of charging-discharging controller as shown in Figure 4.The battery charge-discharge control circuit that charging-discharging controller 13 and battery 2 formed is connected in parallel on the two ends of master controller 11, the output of battery charge-discharge control circuit by emergency lighting controller able 12 be connected in luminescence chip 6 one or more or all on the input of LED series lamp row.In example structure shown in Figure 5, master controller 11 in the control circuit is by filter circuit, bridge rectifier, self adaptation dividing potential drop BUCK circuit and signal feedback circuit are formed, the power supply output signal through filter circuit to the bridge rectifier input, the input of the output of bridge rectifier and self adaptation dividing potential drop BUCK circuit connects, the output end voltage of self adaptation dividing potential drop BUCK circuit is added on LED luminescence chip 6 arrays, the input of signal feedback circuit connects with the sampled signal output of LED luminescence chip 6 arrays, and the feedback signal output of signal feedback circuit is attached to the control input end of self adaptation dividing potential drop BUCK circuit.
The present invention has given this LED illuminating lamp tube multiple utility function structure by embodiment shown in Figure 5, below will carry out taxonomic description to it.
1, self adaptation dividing potential drop BUCK contactor power supply
As shown in Figure 5: power input inserts the electromagnetic interface filter of being made up of L3, C5, C6, the bridge rectifier of forming by D1, D2, D4, D5, C2 etc., not only can carry out rectification to AC power, also can carry out polarity orientation, but self adaptation exchanges and the opposed polarity DC power-supply system to dc source.DC voltage after the rectification (Ui) is formed self adaptation dividing potential drop BUCK converter by pwm control circuit U1 (SFDM07652), inductance L 1, sustained diode 6, the electrochemical capacitor C3 of built-in power switching tube, this converter is in power switch pipe conduction period, output voltage U o=Ui-UL-Usw.Wherein Usw is power switch tube voltage drop＜1V, and UL is the dividing potential drop of inductance L 1.Add feedback signal control power switch pipe output current width (PWM) by U1 control pin 4, and then control inductance dividing potential drop UL and output voltage U o.At the power switch pipe blocking interval, the electric current on the inductance L 1 is by, sustained diode 6, electrochemical capacitor C3 afterflow output.The current sample part is made up of resistance R s, voltage reference N1, photoelectrical coupler U2, resistance R 4 etc.In the course of the work, the electric current I s that single group LED flows through produces voltage U s on Rs, and when Is reduced, Us＜N1 controlled voltage, and feedback closed loop control output voltage U o raises Is is raise; When Is raises, Us〉N1 controls voltage, and feedback closed loop control output voltage U o reduces reduces Is.U1 among Fig. 5 is built-in with the constant current start-up circuit, when start normal after start-up circuit remove, inductance L 1 and L2 homophase and around, the L2 inductance value is 1/4 of a L1 inductance value.L2, D3, Z4, C4 form circuit of synchronous rectification, and rectifier output voltage (Up=1/2Uo), Up are the IC1 power supply that continues.
Design circuit of the present invention has very high conversion efficiency and very low control power consumption, owing to adopt the mode of self adaptation dividing potential drop BUCK converter, electric current on the inductance is continuous, can not produce high voltage, ceiling voltage point is the commutating voltage on the C2 in the circuit, therefore reduced in the circuit the requirement of components and parts electric pressure, improved reliability, reduced cost.In power switch pipe conduction period, energy directly is transferred to load, the conversion efficiency height, and it is little to generate heat.Components and parts work under the low voltage simultaneously, help further reducing the control power consumption.Again because above-mentioned design circuit adopts advanced self adaptation dividing potential drop BUCK converter technology topology scheme, when the lower voltage of converter output, make the LED lamp can be in very wide input voltage range operate as normal.Because power switch tube voltage drop Usw＜1V, when maximum conducting dutycycle is 80%, can guarantee operate as normal under input voltage (Ui=Uo/0.8-1=1.25Uo-1) condition, for example: output voltage U o=25V, then input voltage Ui=1.25 x 25-1=30V just can operate as normal.U1 is withstand voltage to be 650V DC, when C2 and other device of rectification circuit are selected the 450V voltage withstand class for use, can guarantee input voltage operate as normal under direct current 450v DC, interchange 300v AC condition, so just can make light fixture of the present invention be adapted to the different power voltage environment in global any area.In addition, because the present invention adopts self adaptation dividing potential drop BUCK converter technology, current work can not produce bigger electromagnetic interference because of current break on the inductance in continuous mode, when power also can add pfc controller at the switch converters front end during greater than 30W, to improve circuit power factor.
2, low sampling power consumption control and automatic temperature-adjusting brilliance control function
Brilliance control of constant-current source automatic temperature-adjusting and low sampling power control circuit in design circuit of the present invention, have been added.As shown in Figure 5: the feedback control circuit of the pwm control circuit U1 of built-in power switching tube is made up of IC2, N1, R1, R2, R3, R4, R6, RS, LX1, TX1, Z3, and R2, R3, R4, LX1, TX1, Z3, RS form low sampling power consumption control and automatic temperature-adjusting intednsity circuit.Voltage reference N1 to start to control voltage higher, generally at 2.5V, by low consumption circuit give the prefabricated certain voltage of N1 (about UG=2v) then current sampling resistor RS go up and produce 0.5V voltage and just can feed back current stabilization, reduction sampling voltage 2V can reduce the sampling power consumption significantly; When variations in temperature, the change in resistance of temperature sensing device TX1, feedback voltage UG changes, closed-loop control DC/DC converter (self adaptation dividing potential drop BUCK circuit) output voltage changes, current IS is changed, after adopting automatic temperature-adjusting control, can be controlled at the temperature of LED lamp plate more in the reasonable range, reduce light decay, prolong LED illuminating lamp service life significantly; When brightness changes, the change in resistance of sensor devices LX1, feedback voltage UG changes, and closed-loop control DC/DC converter output voltage changes, and current IS is changed.After adopting the auto brightness control technology, the operating current of semi-conductor lighting lamp can change with ambient brightness, further improves the energy-saving effect of LED.When ambient light is brighter, can reduce the operating current of LED automatically, not only energy-conservation like this, can also improve the functional reliability of LED, increase the service life.When ambient light is dark, increase the operating current of LED automatically, guarantee illuminating effect.And when LED produces light decay because of long-term use, strengthen the operating current of LED automatically, and guarantee lighting quality, can prolong the service life of LED like this.
3, main converter output overvoltage and short-circuit protection function
Main converter output overvoltage and short-circuit protection circuit in design circuit of the present invention, have been added.As shown in Figure 5: in the feedback control circuit of PWM controller U1, insert voltage-stabiliser tube Z1, Z2, when output voltage U O was too high, voltage-stabiliser tube Z1, Z2 were breakdown, and feedback voltage changes, thereby but the output voltage of current source is limited in regulation numerical value (UZ1+UZ2), guarantees the LED reliably working; PWM controller U1 has perfect current limliting, overcurrent and overheat protector function in addition, can guarantee that constant-current source does not damage under long-term output short-circuit state.
4, equivalent load dilatation function
In design circuit of the present invention, added equivalent load dilatation constant-current source circuit.As shown in Figure 5: LED luminescence chip 6 arrays are formed by the LED lamp of going here and there again earlier and the series-parallel connection mode connects by many, the output control terminal of self adaptation dividing potential drop BUCK circuit is added on LED luminescence chip 6 arrays, all connect one by sampling resistor (Rs among the figure on each parallel connection LED luminescence chip lamp branch road in LED luminescence chip 6 arrays, R5, R7) sample circuit of Gou Chenging, the sampled signal output of LED luminescence chip 6 arrays is connected to the input of self adaptation dividing potential drop BACK circuit by a sampled signal comparator, and the signal input part of sampled signal comparator is taken from the output of one or more sample circuit in LED luminescence chip 6 arrays.In the work, LED branch current (IS) sampled signal (US) output is by the output voltage of sampled signal comparator FEEDBACK CONTROL self adaptation dividing potential drop BACK converter, and then control IS output constant current.Because other branch road on the LED lamp battle array and the equivalence fully of sampling branch road load characteristic, and it is parallel to again on the same power supply, so electric current and sampling branch current IS that other branch road passes through equate and constant current.The output current (IO) of self adaptation dividing potential drop BACK converter is each parallel branch output current sum.Can increase or reduce the series LED branch road very easily, to change the general power of LED lamp battle array, improve LED lamp functional reliability, the convenient effect that changes the power output of LED lamp battle array thereby reach.After adopting equivalent load dilatation technology, parallel branch on the LED luminous plaque is increased, the led chip number of each branch road series connection is reduced, reduced self adaptation dividing potential drop BUCK converter output voltage on the one hand, help improving the reliability of led chip, on the other hand, even certain series arm is damaged, its integral illumination influence to the LED lamp plate is also very little.
5, variable power LED function of emergency illumination
In design circuit of the present invention, added variable power LED emergency lighting circuit shown in Figure 6.Referring to this figure, go up charge-discharge control circuit in parallel, battery (BAT), emergency lightening control circuit composition emergency lighting circuit in main converter (self adaptation dividing potential drop BUCK converter) 8 outputs.Battery can be selected multi-section serial or parallel connection for use according to the power and the time requirement of emergency lighting, to improve voltage and capacitance grade.The input of battery charge-discharge control circuit and knot are at main converter 8 outputs, because main converter 8 has adopted equivalent load dilatation technology, in main converter 8 power margin scopes, charging a battery does not influence the constant current of LED luminous plaque power supply.The output of charge-discharge control circuit is connected on the branch road or a plurality of branch road or whole LED connection in series-parallel array of LED lamp battle array by emergency lightening control circuit.Led array is removable in the circuit of the present invention is divided into a plurality of low-power LED arrays, the required supply current of low-power LED array is very little, characteristics such as the easy fractionation that it had, easy associativity, high brightness, low-power consumption, long-life, make it to become the perfect light source of " the variable power LED emergency light " that satisfy different size requirement (different emergency lighting times, different emergency lighting power).Add small size, high power capacity, long-life, ferric phosphate lithium cell that security reliability is high in lamp body, give one or more low-power LED series arms power supplies specially, charging-discharging controller is controlled lithium battery, prolongs battery service life.In actual the use, when civil power just often, self adaptation dividing potential drop BACK converter output dc voltage is given whole LED lamp battle arrays power supplies, the illumination of LED lamp battle array total power is a charge in batteries by charging-discharging controller simultaneously; When civil power interrupted and satisfies the emergency lighting condition, emergency lighting controller able control battery was one or the power supply of part low-power LED array, also can be whole led array power supplies, made LED lamp battle array realize part power or total power emergency lighting.Because partial L ED emergency lighting power is less, need the storage battery power supply electric current very little, simultaneously because LED requires direct current supply, the battery output dc voltage does not need to be converted to alternating voltage through inverter, conversion efficiency is higher, therefore can little with volume, lightweight small-capacity cells place lamp body inside, carry out the emergency lighting of long period, and then realize conversion from the EPS emergency lighting system to " variable power LED emergency light ".Adopt the technology of such scheme to have project organization advantages of simple, reliable, the energy conversion efficiency advantages of higher of serviceability, EPS emergency lighting system cost is very high in case it has solved preferably, engineering cost and maintenance cost is very high and the EPS illuminator breaks down and cause big area coverage emergency lighting zone to interrupt problems such as illumination, improve the reliability of emergency lighting, reduced cost.
The work structuring of circuit shown in Figure 6 comprises charging control, discharge and emergency lighting Based Intelligent Control, three parts of emergency lighting constant-current source, is briefly explained below in conjunction with the course of work of this accompanying drawing to each several part.
5.1 charging control
Charge controller is made up of IC1 (MC34063), L11, C11, C14, C10, R11, R12, R15, D11, D13 and lithium iron phosphate storage battery (BAT).Adopt the switch step-down constant current to change the constant-voltage charge pattern.During the charging beginning, to lithium cell charging, after single-unit ferric phosphate lithium cell charging voltage reached maximum charging voltage 3.65V, charging circuit was automatically converted to constant-voltage charge to charging control circuit with constant current, and the lithium cell charging electric current reduces to zero, enters the floating charging state.
5.2, discharge and emergency lighting Based Intelligent Control
Discharge and emergency lighting Based Intelligent Control are made up of IC2 (MC14024), M1, N11, N12, N13, P1, LX11 and peripheral components thereof.When single-unit ferric phosphate lithium cell discharge voltage reached minimum voltage 2.5V, charge/discharge control circuit is closed automatically and made discharge output voltage (UE) was zero, and the locking closed condition.Only just open discharge loop behind next lithium cell charging and when meeting the emergency lighting condition.The permission emergency lighting condition of project organization of the present invention is: only work as single battery voltage and be higher than 2.5V; The civil power condition is (0); Brightness conditions is (0); It is full up when sufficient do not have to turn-off emergency lighting, and discharge and emergency lighting intelligent controller have voltage output, and its output voltage and cell voltage are basic identical etc.The shutoff emergency lighting condition of project organization of the present invention is: intelligence is turn-offed emergency lighting when the urban electric power switch is turn-offed twice continuously in 3S, and the self-locking off state, resets when civil power being arranged next time.
5.3 emergency lighting constant-current source
The emergency lighting constant-current source is made up of IC3 (MC34063), L12, D12, C12, C21, Z12, Z13, R13, R14 etc., adopts the boost switching formula constant current way of output.When Based Intelligent Control allowed UE output, IC3 boosted and exports VE.VE is the power supply of partial L ED branch road by D7, D8 on Fig. 5, and sampling resistor RS goes up generation sampled voltage US and feeds back to IC3 control end 5 ends, and closed-loop control makes IS constant, and then makes other equivalent load current constant.In the present invention's design can not work simultaneously in master current source and emergency electric current source, therefore a shared sampling slip.Z12, Z13 play clamper and prevent that output open circuit from producing the effect of high pressure in the circuit, the voltage increase and current constant source be designed to have output short-circuit, the overcurrent protection function pattern.
Claims (7)
1, a kind of radiating control emergency lighting integrated thick-film packaged LED lighting lamp tube, it is characterized in that being provided with the Aluminium Radiator shell (7) of automatic control circuit board (1) and battery (2) and the lamp luminescence body that is installed on the Aluminium Radiator shell (7) is formed by housing, wherein:
1.1 said lamp luminescence body has a nickel-plated aluminum base circuit board (5) that can fasteningly be contained in the Aluminium Radiator shell (7), be packaged with many LED luminescence chips (6) of forming determinant lamp battle array at nickel-plated aluminum base circuit board (5) upper surface thick film, be packaged with epoxy or silicon rubber system light-distribution lens (4) in aluminium base circuit board (5) top, open near the surface of LED luminescence chip (6) at light-distribution lens (4) and to be shaped on rectangle fluorescent material groove, evenly adding in groove has fluorescent material (3);
1.2 going up the control circuit that is provided with at automatic control circuit board (1) is made up of master controller (11), emergency lighting controller able (12) and charging-discharging controller (13), the battery charge-discharge control circuit that charging-discharging controller (13) and battery (2) are formed is connected in parallel on the two ends of master controller (11), and the output of battery charge-discharge control circuit is connected on one or more or the input that all the LED series lamp is listed as of luminescence chip (6) by emergency lighting controller able (12).
2, radiating control emergency lighting integrated thick-film packaged LED lighting lamp tube according to claim 1, it is characterized in that being packaged with many BLED luminescence chips (6) of forming determinant lamp battle array at nickel-plated aluminum base circuit board (5) upper surface thick film, evenly adding in light-distribution lens rectangle fluorescent material groove has yellow fluorescent powder (3).
3, radiating control emergency lighting integrated thick-film packaged LED lighting lamp tube according to claim 2, it is characterized in that at aluminium base circuit board Copper Foil electroplating surface 10 μ m nickel foils, single BLED luminescence chip (6) directly is welded on the nickel foil surface, at BLED luminescence chip (6) and solder joint surface applied one deck printing opacity silicon rubber.
4, radiating control emergency lighting integrated thick-film packaged LED lighting lamp tube according to claim 1 and 2, it is characterized in that nickel-plated aluminum base circuit board (5) is made of basic LED or the BLED luminous plaque power model of 300mm * a 20～30mm, or be spliced to form by basic LED or the BLED luminous plaque power model of 2～4 300mm * 20～30mm, LED or BLED luminescence chip (6) are encapsulated on the nickel-plated aluminum base circuit board (5) to thick film along the plate face diameter.
5, radiating control emergency lighting integrated thick-film packaged LED lighting lamp tube according to claim 1; it is characterized in that LED luminescence chip (6) array comprises many self-shield type semi-conductor lighting lamps (61) by series and parallel composition array, every self-shield type semi-conductor lighting lamp (61) is formed by a semi-conductor lighting lamp (61a) and a voltage-stabiliser tube (61b) in parallel with this semi-conductor lighting lamp (61a).
6, radiating control emergency lighting integrated thick-film packaged LED lighting lamp tube according to claim 1, it is characterized in that master controller (11) in the control circuit is by filter circuit, bridge rectifier, self adaptation dividing potential drop BUCK circuit and signal feedback circuit are formed, the power supply output signal through filter circuit to the bridge rectifier input, the input of the output of bridge rectifier and self adaptation dividing potential drop BUCK circuit connects, the output end voltage of self adaptation dividing potential drop BUCK circuit is added on LED luminescence chip (6) array, the input of signal feedback circuit connects with the sampled signal output of LED luminescence chip (6) array, and the feedback signal output of signal feedback circuit is attached to the control input end of self adaptation dividing potential drop BUCK circuit.
7, radiating control emergency lighting integrated thick-film packaged LED lighting lamp tube according to claim 6, it is characterized in that LED luminescence chip (6) array by many by first string again and the LED lamp that connects of series-parallel connection mode form, the output end voltage of self adaptation dividing potential drop BUCK circuit is added on LED luminescence chip (6) array, the sample circuit that constitutes by sampling resistor of all connecting on each parallel connection LED luminescence chip lamp branch road in LED luminescence chip (6) array, the sampled signal output of LED luminescence chip (6) array is connected to the input of self adaptation dividing potential drop BUCK circuit by a sampled signal comparator, and the signal input part of sampled signal comparator is taken from the output of one or more sample circuit in LED luminescence chip (6) array.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101051928A CN100523587C (en) | 2006-12-19 | 2006-12-19 | Radiating control emergency lighting integrated thick-film packaged LED lighting lamp tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2006101051928A CN100523587C (en) | 2006-12-19 | 2006-12-19 | Radiating control emergency lighting integrated thick-film packaged LED lighting lamp tube |
Publications (2)
| Publication Number | Publication Date |
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| CN101070949A CN101070949A (en) | 2007-11-14 |
| CN100523587C true CN100523587C (en) | 2009-08-05 |
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| CNB2006101051928A Expired - Fee Related CN100523587C (en) | 2006-12-19 | 2006-12-19 | Radiating control emergency lighting integrated thick-film packaged LED lighting lamp tube |
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