CN202721873U - Intelligent LED car light topology protection system - Google Patents
Intelligent LED car light topology protection system Download PDFInfo
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- CN202721873U CN202721873U CN2012203803516U CN201220380351U CN202721873U CN 202721873 U CN202721873 U CN 202721873U CN 2012203803516 U CN2012203803516 U CN 2012203803516U CN 201220380351 U CN201220380351 U CN 201220380351U CN 202721873 U CN202721873 U CN 202721873U
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- light
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- triode
- branch road
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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
Abstract
The utility model relates to an intelligent LED car light topology protection system. A power supply V1 is connected in parallel with over two paths of light emitting diode groups and a subcircuit by a resistor R1; each path of light emitting diode group includes more than two light emitting diodes that are connected in series; and all the light emitting diodes of all the light emitting diode groups are connected in parallel with shunt voltage-regulator tubes with the opposite polarity. Besides, the system also includes a current sharing circuit formed by a subcircuit triode Q1 and more than two subcircuit triodes Qns; the anode of the subcircuit voltage-regulator tube D1 or a subcircuit resistor R2 is connected with a collector electrode of the subcircuit triode Q1; and an emitting electrode of the subcircuit triode Q1 is grounded. In addition, all the light emitting diode groups are respectively connected with collector electrodes of the respective subcircuit triodes Qns; emitting electrodes of all the subcircuit triodes Qns are grounded; and voltages between base electrodes and the collector electrodes of all the subcircuit triodes Qns and the subcircuit triode Q1 are identical. According to the utility model, under the circumstances that a breaking or short-circuit phenomenon occurs at any light emitting diode, influences on other light emitting diodes can be reduced.
Description
Technical field
The utility model relates to a kind of intelligent LED car light topology protection system, belongs to the Vehicular lamp technical field.
Background technology
LED be light-emitting diode have that volume is little, quality is light, low in energy consumption, the life-span is long, reliability is high and the advantage such as fast response time.Along with the development of led lighting technology, the application of light-emitting diode is more and more extensive, particularly in automobile lamp and lighting engineering field.But light-emitting diode can produce short circuit owing to reasons such as its applied environment and supply power voltage or electric currents or breaking phenomena is damaged.In order to improve the stability of led lighting, except updating the technique of light-emitting diode, prevent that outside its damage, led lighting topological circuit and protective circuit thereof also are focuses of studying at present.
The led lighting topological system is according to its application scenario at present, usually adopts series parallel structure and network structure.When the led lighting topological system adopts series parallel structure, to be consisted of by multichannel light-emitting diode group, and every road light-emitting diode group is made of a plurality of light-emitting diodes, but after a light-emitting diode opens circuit in the light-emitting diode group of every road, other light-emitting diode of that road at its place will extinguish, and when using the few application scenario of light-emitting diode quantity for car light, when a light-emitting diode opens circuit together, can making riches all the way, the optical diode group does not work, and causes the car light luminous intensity distribution not meet rules; And when a light-emitting diodes tube short circuit, can cause this road light-emitting diode group at its place excessively bright, other each road light-emitting diode group is dimmed or extinguish.
Therefore at present a lot of light-emitting diode (LED) car lamp topological systems adopt network structures, and when having a light-emitting diode to open circuit, although other light-emitting diode still can be worked as usual, but the electric current that the light-emitting diode in parallel with it passes through can become large; And when a light-emitting diodes tube short circuit, the light-emitting diode in parallel with it will extinguish.Therefore although network structure can solve when light-emitting diode opens circuit the impact of other light-emitting diode, can't solve the impact that causes to other light-emitting diode owing to the light-emitting diodes tube short circuit.Therefore in the light-emitting diode (LED) car lamp topological system, need a kind of therein light-emitting diode no matter to open circuit or during short circuit, the intelligent LED car light topology protection system that other light-emitting diode is not all had a significant impact.
Summary of the invention
The purpose of this utility model provide no matter a kind of wherein any one light-emitting diode opens circuit or the situation of short circuit under, can both reduce the intelligent LED car light topology protection system on other light-emitting diode impact.
The utility model for the technical scheme that achieves the goal is: a kind of intelligent LED car light topology protection system, it is characterized in that: power supply V1 is through resistance R 1 and light-emitting diode group and branch circuit parallel connection more than the two-way, described branch road adopts branch road voltage-stabiliser tube D1 or branch road resistance R 2, every road light-emitting diode group comprises two above light-emitting diodes that are in series, and each light-emitting diode in the light-emitting diode group of every road is all in parallel with an opposite polarity shunt voltage-stabiliser tube; Also comprise by branch road triode Q1 and the current uniform circuit that consists of of triode Qn along separate routes more than two, the positive pole of branch road voltage-stabiliser tube D1 or branch road resistance R 2 connect the collector electrode of branch road triode Q1, the grounded emitter of branch road triode Q1, each road light-emitting diode group is connected with the collector electrode of separately shunt triode Qn respectively, each is the emission collection ground connection of triode Qn along separate routes, and the base stage of each shunt triode Qn and branch road triode Q1 is identical with the voltage of inter-collector.
Intelligent LED car light topology protection system of the present utility model; on the series parallel structure basis of adopting the light-emitting diode group more than the two-way; also on power supply V1 and be connected to branch road; make branch road in parallel with each light-emitting diode group; be connected with branch road triode Q1 on the branch road; and each road light-emitting diode group also is connected with separately shunt triode Qn respectively; because each branch road triode Q1 is identical with the voltage of inter-collector with the base stage of shunt triode Qn; therefore make the electric current of branch road and Ge Lu light-emitting diode group keep equating; when any one light-emitting diodes tube short circuit wherein; although although the base stage of coupled shunt triode Qn and collector voltage variation are larger; the base stage of the shunt triode Qn that this shunt triode Qn and other each road light-emitting diode group connect is also identical with the voltage of inter-collector; because the electric current of each road light-emitting diode group can keep equating; riches all the way at the place in the time of can not producing short circuit, and the optical diode group is excessively bright, and the dimmed phenomenon of all the other road light-emitting diode groups.Riches all the way when the optical diode group opens circuit when wherein any for the utility model, its electric current can pass through from the branch road in parallel with the light-emitting diode group, because connected branch road triode Q1 is identical with inter-collector voltage with the base stage of each shunt triode Qn, therefore can not impact other road light-emitting diode group.The utility model any one light-emitting diode no matter opening circuit or the situation of short circuit under, all can both reduce can satisfy the few car light occasion of use light-emitting diode quantity to other light-emitting diode impact.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is one of circuit theory diagrams of the utility model intelligent LED car light topology protection system.
Fig. 2 be the utility model intelligent LED car light topology protection system circuit theory diagrams two.
Circuit theory diagrams when Fig. 3 is one of them light-emitting diode short-circuit conditions of the utility model intelligent LED car light topology protection system.
Circuit theory diagrams when Fig. 4 is one of them luminous two pieces of pipe open circuit conditions of the utility model intelligent LED car light topology protection system.
Embodiment
See Fig. 1; shown in 2; intelligent LED car light topology protection system of the present utility model; power supply V1 is through resistance R 1 and light-emitting diode group and branch circuit parallel connection more than the two-way; this branch road adopts branch road voltage-stabiliser tube D1 or branch road resistance R 2; as shown in Figure 1; branch road voltage-stabiliser tube D1 is in parallel with the light-emitting diode group more than the two-way; or as shown in Figure 2; branch road resistance R 2 is in parallel with the light-emitting diode group more than the two-way; this power supply V1 adopts battery; can carry out current limliting by resistance R 1; every road light-emitting diode group comprises two above light-emitting diodes that are in series; to form string and structure; branch road voltage-stabiliser tube D1 reverse-conducting voltage or the voltage by branch road resistance R 2 are greater than the operating voltage of every road light-emitting diode group; this branch road voltage-stabiliser tube D1 reverse-conducting voltage or can be greater than 1.1～1.2 times of every road light-emitting diode group operating voltage, to guarantee that branch voltage is greater than the operating voltage of each light-emitting diode group by the voltage of branch road resistance R 2.
Light-emitting diode group of the present utility model can adopt three the road or multichannel more, see Fig. 1, shown in 2, first via light-emitting diode group is by LED 1, LED 2 and LED 3 series connection consist of, the the second road light-emitting diode group is by LED 4, LED 5 and LED 6 series connection consist of, Third Road light-emitting diode group is by LED 7, LED 8 and LED 9 series connection consist of, each light-emitting diode in the light-emitting diode group of every road is all in parallel with an opposite polarity shunt voltage-stabiliser tube, see Fig. 1, shown in 2, the LED 1 of first via light-emitting diode group is with voltage-stabiliser tube Dn1 is in parallel along separate routes, LED 2 is with voltage-stabiliser tube Dn2 is in parallel along separate routes, LED 3 is with voltage-stabiliser tube Dn3 is in parallel along separate routes, the LED 3 of the second road light-emitting diode group is with voltage-stabiliser tube Dn3 is in parallel along separate routes, LED 4 is with voltage-stabiliser tube Dn4 is in parallel along separate routes, LED 5 is with voltage-stabiliser tube Dn6 is in parallel along separate routes, the LED 7 of Third Road light-emitting diode group is with voltage-stabiliser tube Dn7 is in parallel along separate routes, LED 8 is with voltage-stabiliser tube Dn8 is in parallel along separate routes, LED 9 is with voltage-stabiliser tube Dn9 is in parallel along separate routes, each along separate routes the reverse-conducting voltage of voltage-stabiliser tube greater than the operating voltage of light-emitting diode, the utility model each along separate routes the reverse-conducting voltage of voltage-stabiliser tube greater than 1.1～1.2 times of the operating voltage of light-emitting diode.
See Fig. 1, shown in 2, the utility model also comprises by branch road triode Q1 and the current uniform circuit that consists of of triode Qn along separate routes more than two, the positive pole of branch road voltage-stabiliser tube D1 connects the collector electrode of branch road triode Q1, or branch road resistance R 2 connects the collector electrode of branch road triode Q1, the grounded emitter of branch road triode Q1, each road light-emitting diode group is connected with the collector electrode of separately shunt triode Qn respectively, each is the emission collection ground connection of triode Qn along separate routes, see Fig. 1, shown in 2, the winding of first via light-emitting diode is triode Qn1 along separate routes, the the second road light-emitting diode winding is triode Qn2 along separate routes, the winding of Third Road light-emitting diode is triode Qn3 along separate routes, the base stage of each shunt triode Qn of the utility model and branch road triode Q1 is identical with the voltage of inter-collector, the change in voltage of any one light-emitting diode group no matter, the collector voltage that is connected the shunt triode with it is changed, because the existence of current uniform circuit makes the electric current of each road light-emitting diode group can keep equating.
The utility model LED throws light in the topological protection system; when any one one of them light-emitting diode of light-emitting diode group is short-circuited; as shown in Figure 3; be short-circuited such as the LED 1 in the first light-emitting diode group; its electric current can pass through from the shunt voltage-stabiliser tube Dn1 in parallel with it; although it is larger that the base stage of coupled branch road triode Q1 and collector voltage change; but because the voltage between each shunt transistor base and emitter equates; therefore can not affect the normal operation of other light-emitting diode of going the same way; and little to the curent change of other each road light-emitting diode group; so can not affect the normal operation of other each road light-emitting diode group yet, the LED car light is realized short-circuit protection.
LED of the present utility model throws light in the topological protection system; wherein any one light-emitting diode opens circuit; when the optical diode group that makes that riches all the way does not work; as shown in Figure 4; open circuit such as the LED 1 in the first via light-emitting diode group; because the existence of the voltage of branch road voltage-stabiliser tube D1 or branch road resistance R 2; electric current can pass through from branch road voltage-stabiliser tube D1 or branch road resistance R 2; so do not affect other road light-emitting diode group; also because of the existence of current uniform circuit; on the not impact of other road light-emitting diode group, the LED car light is realized open circuit protection.
Claims (3)
1. intelligent LED car light topology protection system, it is characterized in that: power supply V1 is through resistance R 1 and light-emitting diode group and branch circuit parallel connection more than the two-way, described branch road adopts branch road voltage-stabiliser tube D1 or branch road resistance R 2, every road light-emitting diode group comprises two above light-emitting diodes that are in series, and each light-emitting diode in the light-emitting diode group of every road is all in parallel with an opposite polarity shunt voltage-stabiliser tube; Also comprise by branch road triode Q1 and the current uniform circuit that consists of of triode Qn along separate routes more than two, the positive pole of branch road voltage-stabiliser tube D1 or branch road resistance R 2 connect the collector electrode of branch road triode Q1, the grounded emitter of branch road triode Q1, each road light-emitting diode group is connected with the collector electrode of separately shunt triode Qn respectively, each is the emission collection ground connection of triode Qn along separate routes, and the base stage of each shunt triode Qn and branch road triode Q1 is identical with the voltage of inter-collector.
2. intelligent LED car light according to claim 1 topology protection system is characterized in that: described each along separate routes the reverse-conducting voltage of voltage-stabiliser tube greater than the operating voltage of the light-emitting diode in parallel with it.
3. intelligent LED car light according to claim 1 topology protection system, it is characterized in that: the reverse-conducting voltage of described branch road voltage-stabiliser tube D1 or the voltage of branch road resistance R 2 are greater than the operating voltage of every road light-emitting diode group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203803516U CN202721873U (en) | 2012-08-02 | 2012-08-02 | Intelligent LED car light topology protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203803516U CN202721873U (en) | 2012-08-02 | 2012-08-02 | Intelligent LED car light topology protection system |
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| Publication Number | Publication Date |
|---|---|
| CN202721873U true CN202721873U (en) | 2013-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203803516U Expired - Lifetime CN202721873U (en) | 2012-08-02 | 2012-08-02 | Intelligent LED car light topology protection system |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102802307A (en) * | 2012-08-02 | 2012-11-28 | 常州星宇车灯股份有限公司 | Intelligent topology protection system of LED (Light-Emitting Diode) car lamp |
-
2012
- 2012-08-02 CN CN2012203803516U patent/CN202721873U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102802307A (en) * | 2012-08-02 | 2012-11-28 | 常州星宇车灯股份有限公司 | Intelligent topology protection system of LED (Light-Emitting Diode) car lamp |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130206 |
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| CX01 | Expiry of patent term |