Intelligent topology protection system of LED (Light-Emitting Diode) car lamp
A technology for LED vehicle lights and topology protection, which is applied in energy-saving control technology, lamp circuit layout, lighting devices, etc., and can solve problems such as unsolvable effects.
Inactive Publication Date: 2012-11-28
CHANGZHOU XINGYU AUTOMOTIVE LIGHTING SYST
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[0013] See figure 1 , 2 As shown, in the intelligent LED lamp topology protection system of the present invention, the power supply V1 is connected in parallel with more than two light-emitting diode groups and branches through the resistor R1, and the branch adopts the branch voltage regulator tube D1 or the branch resistor R2, see figure 1 As shown, the branch voltage regulator tube D1 is connected in parallel with more than two groups of light-emitting diodes, or see figure 2 As shown, the branch resistance R2 is connected in parallel with more than two groups of light-emitting diodes. The power supply V1 uses a battery, and the current can be limited by the resistor R1. Each group of light-emitting diodes includes more than two light-emitting diodes connected in series to form a series-parallel structure, the reverse conduction voltage of the branch regulator D1 or the voltage through the branch resistor R2 is greater than the working voltage of each LED group, the rever...
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The invention relates to an intelligent topology protection system of an LED (Light-Emitting Diode) car lamp. A power supply V1 is connected with more than two paths of light-emitting diode groups and branches by a resistor R1 in parallel; each path of light-emitting diode group comprises more than two light-emitting diodes which are connected in series; each light-emitting diode of each path of light-emitting diode group is connected with a branch voltage-stabilizing pipe with opposite polarity; each path of light-emitting diode group also comprises a current equal-distributing circuit formed by a branch triode Q1 and more than two branch triodes Qn; the positive electrode of a branch voltage-stabilizing tube D1 or a branch resistor R2 is connected with the collector of the branch triode Q1; the emitter of the branch triode Q1 is grounded; all paths of light-emitting diode groups are respectively connected with the collectors of the respective triodes Qn; and the emitters of all branch triodes Qn are grounded; and the voltages between the bases and the collectors of all the branch triodes Qn and the branch triode Q1 are the same. The intelligent topology protection system has the advantage that when any light-emitting diode is disconnected or in short circuit, the influence on other light-emitting diodes can be reduced.
Description
technical field [0001] The invention relates to an intelligent LED car lamp topology protection system, which belongs to the technical field of motor vehicle lamps. Background technique [0002] LED or light-emitting diode has the advantages of small size, light weight, low power consumption, long life, high reliability and fast response speed. With the continuous development of light-emitting diode lighting technology, the application of light-emitting diodes is becoming more and more extensive, especially in the field of automotive lights and lighting engineering. However, due to reasons such as its application environment and power supply voltage or current, the light-emitting diode may be damaged due to short circuit or open circuit. In order to improve the stability of LED lighting, in addition to continuously improving the technology of LEDs to prevent damage, the topological circuit of LED lighting and its protection circuit are also a hot research topic at present. ...
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CPCY02B20/48Y02B20/40
Inventor 张立任康成包科锋姚肖勇
Owner CHANGZHOU XINGYU AUTOMOTIVE LIGHTING SYST