CN201018693Y - Uninterruption LED emergency lighting light - Google Patents
Uninterruption LED emergency lighting light Download PDFInfo
- Publication number
- CN201018693Y CN201018693Y CNU2007200056657U CN200720005665U CN201018693Y CN 201018693 Y CN201018693 Y CN 201018693Y CN U2007200056657 U CNU2007200056657 U CN U2007200056657U CN 200720005665 U CN200720005665 U CN 200720005665U CN 201018693 Y CN201018693 Y CN 201018693Y
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- Prior art keywords
- circuit
- high frequency
- emergency light
- output
- frequency transformer
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- Expired - Lifetime
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- 238000002955 isolation Methods 0.000 claims abstract description 14
- 238000001914 filtration Methods 0.000 claims abstract description 10
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 6
- 238000005070 sampling Methods 0.000 claims abstract description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 10
- 239000005955 Ferric phosphate Substances 0.000 claims description 8
- 229940032958 ferric phosphate Drugs 0.000 claims description 8
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical group [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 8
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000000087 stabilizing effect Effects 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- 238000005286 illumination Methods 0.000 abstract description 17
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000004065 semiconductor Substances 0.000 abstract description 2
- 230000005693 optoelectronics Effects 0.000 abstract 3
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009877 rendering Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model relates to a LED emergency light which belongs to the semiconductor illumination technical field. The utility model consists of a charger, a lithium ion accumulator cell, a LED and a drive circuit. Wherein, the charger comprises a commercial power converting circuit, a high frequency isolation transfer network, a capacity factor switching circuit, a charging voltage output circuit, a stable voltage sampling feedback circuit and an optoelectronic isolator. The commercial power converting circuit is positioned on the high frequency isolation transfer network after rectifying and filtering the alternating current. The primary input port of the high frequency transformer is connected with the current input port of the capacity factor switching circuit. The supplementary power supply of the high frequency transformer is connected with the console port of the capacity factor switching circuit through the output port of the optoelectronic isolator. The charging voltage output circuit outputs the secondary voltage after rectifying and filtering, which is outputted through the high frequency transformer. The output port of the constant voltage feedback circuit is connected with the input port of the optoelectronic isolator. The uninterrupted LED emergency light, provided by the utility model, has the advantages of small volume, low cost and long service life.
Description
Affiliated technical field
The utility model belongs to technical field of semiconductor illumination, relates to a kind of high brightness, long-life, low-cost LED emergency light.
Background technology
Many important events (such as the corridor of market place builet below the ground, skyscraper, subway etc.) all require continuous illumination.The lighting of these occasions is generally all powered by AC network.As everyone knows, even the highest power network of power supply quality also can not under any circumstance all guarantee uninterrupted power supply.In order to ensure the important events continuous illumination, usually all adopt the emergency lighting system of forming by charger, storage battery, inverter and change over switch etc., during normal power supply, electrical network is except powering to lighting, also charge a battery by charger, during power failure, storage battery is converted to alternating current by inverter with direct current, powers to lighting through change over switch again.Because conversion process needs certain hour, so stipulate in up-to-date Europe and the international emergency lighting standard, during the power supply obstacle, illuminating lamp recovers time of required illumination must not be above 50 seconds, even reach up-to-date international standard, the instantaneous interruption illumination between transfer period, also can occur, during this period of time also may send some accident, even cause the certain economic loss.Because in the emergency lighting system, during power supply trouble, therefore lighting must be limited the power of lighting and the time of emergency lighting by storage battery power supply.Stipulate in up-to-date Europe and the international emergency lighting standard: is 1Lx on ground along the minimal illumination of passage center line lighting, illumination uniformity i.e. the highest illumination/minimal illumination＞40, the time that emergency light continues illumination is 1h, and the power of ordinary luminaire that can reach this standard is less.But people feel that generally the illumination of emergency light is too low, and the duration is too short.Up-to-date Europe and international emergency lighting standard-required illuminating lamp color rendering index are greater than 40, and under this condition, the object true features are difficult to judge clear.In addition, emergency light all is made up of many parts such as charger, storage battery, inverter and change over switches, so cost is higher, and functional reliability is also relatively poor.
At present, emergency light both domestic and external generally adopts incandescent lamp.The advantage of incandescent lamp is a low price, but power consumption is too big, and therefore in order to reach the emergency lighting time of regulation, the capacity of required storage battery is bigger.Some emergency light also adopts electricity-saving lamp, though this light fixture can be saved portion of energy, but DeGrain, the color rendering index of this light fixture is lower simultaneously, and the life-span is also limited.
Emergency light generally adopts lead acid accumulator both at home and abroad at present.Though this storage battery price is lower, volume and weight is all very big, and the life-span is also very short.For the weight reduction reduced volume, some emergency light has adopted nickel-cadmium cell.This battery can cause serious environmental to pollute, and present most countries strictness forbid producing and using this battery.
In recent years, novel illumination light source (LED) is obtained important breakthrough, and luminous flux can reach every watt 100 lumen, and compares with the brightness incandescent lamp, can save 80% electric energy, and the capacity that reaches same required storage battery of emergency lighting time also can reduce 80%.In addition, the theoretical life-span of LED can reach 100,000 hours, is tens times of incandescent lamp.The LED lamp can save the inverter of present emergency light by DC power supply, and adopting LED is the developing direction of emergency light.In recent years, the ferric phosphate lithium cell that a kind of fail safe is good has especially begun to apply.This battery is used for emergency light, not only can reduce the volume and weight of emergency light significantly, can also guarantee the emergency light emergency lighting.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of volume little, uninterrupted LED emergency light with low cost.For this reason, the utility model adopts following technical scheme:
A kind of uninterrupted LED emergency light, comprise charger, lithium-ions battery, LED and drive circuit thereof, charger comprises municipal electric conversion circuit, high-frequency isolation translation circuit, power switch circuit, charging voltage output circuit, voltage stabilizing sampling feedback circuit, photoisolator; The municipal electric conversion circuit to the electric main rectifying and wave-filtering after, be defeated by the high-frequency isolation translation circuit and carry out voltage transitions; The high-frequency isolation translation circuit comprises that one has the high frequency transformer and the auxiliary circuit thereof of three windings at least, the primary input terminal of high frequency transformer connects the current input terminal of described power switch circuit, the accessory power supply of high-frequency isolation translation circuit links to each other with the control end of power switch circuit by the output of photoisolator, export behind the secondary voltage rectifying and wave-filtering of charging voltage output circuit with high frequency transformer output, the output of voltage stabilizing feedback circuit and the input of photoisolator join.
The uninterrupted LED emergency light of this practicality, the lithium-ions battery that is adopted is a ferric phosphate lithium cell.In charger circuit, the output of the accessory power supply of high frequency transformer and the positive pole of rectifier diode join, be connected to electric capacity between negative pole and the earth terminal, two outputs of photoelectrical coupler join with the negative pole of rectifier diode and the control end of power switch circuit respectively.
The emergency light that the utility model provides adopts LED to make light source, and lithium battery is made energy storage unit, is beneficial to the high frequency transformer switching voltage as charge power supply, can realize high brightness, long-life, low cost, uninterrupted emergency lighting.The ferric phosphate lithium cell that the utility model is good especially with fail safe is used for emergency light, not only reduces the volume and weight of emergency light significantly, has also guaranteed the emergency light emergency lighting.
Description of drawings
The structured flowchart of Fig. 1 uninterrupted LED emergency light of the present utility model;
The structured flowchart of the charger that Fig. 2 emergency light of the present utility model is adopted;
The circuit theory diagrams of the embodiment of first kind of charger that Fig. 3 emergency light of the present utility model is adopted;
The circuit theory diagrams of the embodiment of second kind of charger that Fig. 4 emergency light of the present utility model is adopted.
Embodiment
Below in conjunction with drawings and Examples the utility model is done further detailed description, emergency light of the present utility model partly is made up of lithium battery charger, ferric phosphate lithium cell, LED and drive circuit thereof etc., as shown in Figure 1.The AC network power supply just often, AC power is charged to lithium-ions battery through charger on the one hand, guarantee that storage battery is in the full charge state, supply with constant current by drive circuit to LED on the other hand, guarantee that the LED brightness constancy is constant, have no progeny in the Alternating Current Power Supply that storage battery is a power supply state by the floating charge state exchange, can guarantee continuous illumination by drive circuit, the moment illumination can not occur and interrupt.
Fig. 2 is the structured flowchart of the charger that emergency light of the present utility model adopted.Charger of the present utility model comprises municipal electric conversion circuit, high-frequency isolation translation circuit, power switch circuit, charging voltage output circuit, voltage stabilizing sampling feedback circuit, photoisolator; The municipal electric conversion circuit to the electric main rectifying and wave-filtering after, input to the high-frequency isolation translation circuit and carry out voltage transitions; The high-frequency isolation translation circuit is made of high frequency transformer and auxiliary circuit thereof, the primary input terminal of high frequency transformer connects the current input terminal of power switch circuit, the accessory power supply of high-frequency isolation translation circuit links to each other with the control end of power switch circuit by the output of photoisolator, export behind the secondary voltage rectifying and wave-filtering of charging voltage output circuit with high frequency transformer output, the voltage stabilizing feedback circuit plays pressure stabilization function to the charging voltage output circuit, and being used to detect the variation of output voltage, the input of its output and photoisolator joins.
The circuit theory diagrams of the charger that adopts of the present utility model such as Fig. 3, charger adopt switching mode AC-DC converter.The AC220V alternating voltage is added to the T1 high frequency transformer behind D1 and C1 rectifying and wave-filtering.U1 is a power switch pipe, and D2, C2 and R01 form discharge circuit, plays the protection power switch pipe.The primary input terminal of T1 links to each other with the drain electrode of power switch pipe.
The T1 secondary voltage is exported behind D3 and C4 rectifying and wave-filtering.R03, R04, R05, R1, Z01 and Q1 form the voltage stabilizing feedback circuit, when output voltage fluctuation, and the break-make of control photoelectrical coupler IC1, conducting of power controlling switching tube and shutoff again.
The accessory power supply of T1 is by rectifier diode D01, capacitor C 01 ground connection, and lead-out wire is between the two received the grid of power switch pipe by the output of photoelectrical coupler.
Another embodiment of the present utility model as shown in Figure 4, two embodiment circuit theories are basic identical, main distinction point is, what Fig. 3 adopted is switching power tube, what Fig. 4 adopted is a kind of power switch circuit control chip, model is kx4002.
Advantages such as among two embodiment of the present invention, all adopt ferric phosphate lithium cell, this kind battery is a kind of new type lithium ion battery, and it has, and volume is little, in light weight, the life-span long, fail safe is good.In actual applications, require to adopt constant current to change the constant voltage charge pattern, behind the full charge, charging current drops to zero automatically.
The forward voltage of LED has certain dispersiveness, and along with ambient temperature changes and changes, in order to realize permanent brightness illumination, all requires constant current driven.The color rendering index of LED is higher than the numerical value (40) of up-to-date international standard regulation far away greater than 80, under the LED emergency light, can tell the color of various objects very accurately.
The LED light working voltage is lower, power consumption is especially little, emergency light adopts luminous flux can reach the illuminating effect of 30W incandescent lamp up to the 3W LED of 180 lumens, the lighting angle of LED can design as requested in addition, and can increase irradiate light intensity, therefore by installing the method for lens additional, in the illumination zone that requires, lamp illuminance is higher than the requirement of up-to-date international standard far away.Because can reach 50,000 hours the actual life of LED usually, therefore do not need to adopt two bulbs, because required electric weight is very little, therefore selecting a capacity for use is the ferric phosphate lithium cell of 4Ah, the emergency lighting time can reach 4 hours, is higher than the requirement of up-to-date international standard far away.If only require to reach the lighting hours that up-to-date international standard requires, only need to adopt the ferric phosphate lithium cell of a 1Ah, the cost of emergency light can reduce greatly like this.Though the cost of LED lamp is high slightly at present, because the composition structure of emergency light is simplified greatly, therefore whole cost is well below present emergency light.
Claims (3)
1. uninterrupted LED emergency light, comprise charger, lithium-ions battery, LED and drive circuit thereof, it is characterized in that described charger comprises municipal electric conversion circuit, high-frequency isolation translation circuit, power switch circuit, charging voltage output circuit, voltage stabilizing sampling feedback circuit, photoisolator; Described municipal electric conversion circuit to the electric main rectifying and wave-filtering after, be defeated by the high-frequency isolation translation circuit and carry out voltage transitions; Described high-frequency isolation translation circuit comprises that one has the high frequency transformer and the auxiliary circuit thereof of three windings at least, the primary input terminal of described high frequency transformer connects the current input terminal of described power switch circuit, the accessory power supply of described high-frequency isolation translation circuit links to each other with the control end of power switch circuit by the output of photoisolator, export behind the secondary voltage rectifying and wave-filtering of described charging voltage output circuit with high frequency transformer output, the output of described voltage stabilizing feedback circuit and the input of photoisolator join.
2. uninterrupted LED emergency light according to claim 1 is characterized in that described storage battery is a ferric phosphate lithium cell.
3. uninterrupted LED emergency light according to claim 1, it is characterized in that, the output of the accessory power supply of described high frequency transformer and the positive pole of rectifier diode join, be connected to electric capacity between negative pole and the earth terminal, two outputs of photoelectrical coupler join with the negative pole of rectifier diode and the control end of power switch circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200056657U CN201018693Y (en) | 2007-03-13 | 2007-03-13 | Uninterruption LED emergency lighting light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200056657U CN201018693Y (en) | 2007-03-13 | 2007-03-13 | Uninterruption LED emergency lighting light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201018693Y true CN201018693Y (en) | 2008-02-06 |
Family
ID=39059195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200056657U Expired - Lifetime CN201018693Y (en) | 2007-03-13 | 2007-03-13 | Uninterruption LED emergency lighting light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201018693Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121657A (en) * | 2010-12-21 | 2011-07-13 | 芜湖安得物流股份有限公司 | Emergency lighting device for logistics warehouse |
| CN105682292A (en) * | 2016-03-04 | 2016-06-15 | 山西省交通建设工程监理总公司 | Medium/short tunnel illumination safety energy-saving programmable remote control system |
| CN112361276A (en) * | 2020-11-10 | 2021-02-12 | 湖南湘九红农业科技有限公司 | Firm type fire emergency lighting lamp |
-
2007
- 2007-03-13 CN CNU2007200056657U patent/CN201018693Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121657A (en) * | 2010-12-21 | 2011-07-13 | 芜湖安得物流股份有限公司 | Emergency lighting device for logistics warehouse |
| CN105682292A (en) * | 2016-03-04 | 2016-06-15 | 山西省交通建设工程监理总公司 | Medium/short tunnel illumination safety energy-saving programmable remote control system |
| CN105682292B (en) * | 2016-03-04 | 2017-08-11 | 山西省交通建设工程监理总公司 | In/the programmable tele-control system of short tunnel lighting safety energy-conservation |
| CN112361276A (en) * | 2020-11-10 | 2021-02-12 | 湖南湘九红农业科技有限公司 | Firm type fire emergency lighting lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080206 |
|
| CX01 | Expiry of patent term |