Induction type wireless energy transmission light emitting diode (LED) drive circuit

Abstract

The invention discloses an induction type wireless energy transmission light emitting diode (LED) drive circuit, which comprises a power factor correction circuit, an inverter circuit, a loosely coupled transformer, a rectifier circuit and an LED light source; wherein the output end of the power factor correction circuit is connected with the input end of the inverter circuit, the output end of the inverter circuit is connected with the primary side of the loosely coupled transformer, the secondary side of the loosely coupled transformer is connected with the alternating current input end of the rectifier circuit, the direct current output end of the rectifier circuit is connected with the power supply terminal of the LED light source. Compared with the prior art, the drive circuit disclosed by the invention has the advantages that wireless energy transmission LED drive circuit is realized by using a loosely coupled transformer; the interaction of the heat dissipation of the drive circuit and the heat dissipation of the LED light source is avoided; the voltage of the switching device and the current stress are decreased by a resonant circuit; the luminous efficiency, the quality of light, and the service life of the LED light source are improved by the drive circuit; the high efficiency and high reliability of the LED driver is guaranteed.

Description

technical field [0001] The invention relates to an LED driving circuit. Background technique [0002] LED drivers are high-frequency electronic products with high power density and high integration. The various electronic components used will generate losses during operation, such as the conduction loss and switching loss of switching devices and the high-frequency operation of magnetic components. Iron loss and copper loss, etc., these losses are dissipated in the form of heat energy. [0003] The LED lighting fixtures currently produced often integrate the light source and the driver to achieve plug and play. In the LED lamps with airtight packaging and small space, there is no effective heat dissipation conditions such as radiation and convection. The thermal effects of the LED light source and the driver affect each other. It causes LED aging to be accelerated, its efficiency becomes lower, its life is shortened, and its light color drifts. In addition, as the ambient ...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an LED drive circuit for inductive wireless energy transmission. The drive circuit solves the problem of the mutual influence of the drive circuit and the heat of the LED light source, improves the stability of the LED lighting system, and greatly increases the power of the LED. Lifespan and Luminous Efficiency

Images