CN102905439A

CN102905439A - Intelligent LED (Light Emitting Diode) torch design capable of being wirelessly charged

Info

Publication number: CN102905439A
Application number: CN2012104144417A
Authority: CN
Inventors: 李劲松; 刘�东; 薛明; 刘杰; 张献; 金亮; 杨庆新; 李阳
Original assignee: Tianjin Polytechnic University
Current assignee: Tianjin Polytechnic University
Priority date: 2012-10-24
Filing date: 2012-10-24
Publication date: 2013-01-30

Abstract

The invention provides an intelligent LED (Light Emitting Diode) torch design capable of being wirelessly charged. The torch comprises a direct current stabilized power supply, a transmitting device and a light emitting main chipset, wherein a primary rectifier circuit is arranged in the direct current stabilized power supply, the light emitting main chipset consists of LED arrays which are asymmetrically arranged after engineering heat design and optimization, and a receiving device and a secondary rectifier bridge booster circuit are embedded in the torch. A common 220V lighting power supply is needed. When a sensing device is externally connected, power shortage automatic charging and full power automatic cut-off control can be realized on the LED torch. The charging way is simple, intelligent and quick. Energy conservation and environment-friendly ideas are realized under the condition of meeting the requirement of durable quality. The torch can be widely used by common people, particularly the old living at home for night lighting and the like.

Description

But the intelligent LED torch cylinder of wireless charging design

Technical field

The development of science and technology is maked rapid progress, and will popularize gradually based on the household electrical appliance of wireless power transmission technology and enter huge numbers of families.So-called " wireless power transmission " but be to utilize a kind of special installation the electric energy of power supply to be changed into the energy of radio transmission, again this energy is transformed back into electric energy at receiving terminal, thereby arrives the wireless power to electric equipment.

But the intelligent LED torch cylinder design of the present invention---wireless charging belongs to contactless electric energy transmission technology in the brand-new application of civil area.It can be on the basis of eliminating the electric wire connection to the charging of LED flashlight, and the luminous host chipset of flashlight self is by consisting of through the asymmetric LED matrix of arranging after engineering thermal design and the optimization, easy, the intelligent quick that charges has been realized again the health idea of energy-conserving and environment-protective on long-lived quality requirement.

Background technology

Tradition LED flashlight needs external socket to charge, even and the luminescence chip group of some LED flashlight is made of plurality of LEDs, but problem or thermal design defective because LED arranges, so that the heat that the luminescence chip group produces in the course of the work can not dissipate rapidly and accumulate, cause the LED flashlight easily aging, the life-span is short, luminous flux can't satisfy lighting requirement.Concerning general public, on the basis that increases use cost, brought again environmental pollution.How to make resources effective utilization, remove the trouble of wire during charging from, increase again an important topic that becomes the design of intelligent LED torch cylinder in brightness and useful life.

Summary of the invention

Technical problem to be solved by this invention is, on the basis of Based Intelligent Control, based on the wireless power transmission technology LED flashlight is carried out wireless charging, by the luminous host chipset of LED flashlight is carried out engineering thermal design and optimization, realize reliable service behaviour and highlight illumination, easy, the intelligent quick that charges, energy-conserving and environment-protective.

The technical solution used in the present invention is: D.C. regulated power supply (rectification circuit is housed a time), emitter, LED flashlight (luminous host chipset is by the asymmetric LED matrix of arranging after passing through the engineering thermal design and optimizing, embedded receiving system and secondary rectifier bridge booster circuit).

Emitter comprises two MOSFET, and they can alternate conduction, is that the LC resonant circuit of back is created alternating current; C1 is resonant capacitance, and L1 is resonant inductance, and their parallel resonances to be improving tranmitting frequency, thereby electric energy is sent to receiving terminal with the form of frequency electromagnetic waves.

Luminous host chipset is by the asymmetric LED matrix of arranging after passing through the engineering thermal design and optimizing, reduce gradually the spacing between adjacent two LEDs from the luminous plaque center to both sides, thereby when the heart temperature difference, reduce the mean temperature of whole luminous plaque on the decrease, improve radiating efficiency.

Receiving system consists of new antiresonant circuit by capacitor C 2 and inductance L 2, and they can realize the maximization wireless transmission of electric energy with the emitter impedance matching time.Become direct current through the secondary rectification boosting circuit and supply with flashlight.

The present invention need to use common 220V mains lighting supply, when external sensing device, can realize that short of electricity automatic charging and full electricity automatically shut down control to the LED flashlight.

Description of drawings

Fig. 1 is overall structure figure of the present invention;

Fig. 2 is the circuit theory diagrams (rectification circuit) of D.C. regulated power supply;

Fig. 3 is the circuit theory diagrams of emitter;

Fig. 4 is the LED matrix schematic diagram that adopts non-homogeneous arrangement mode;

Fig. 5 is the circuit theory diagrams of receiving system;

Fig. 6 is the secondary rectification circuit schematic diagram.

Wherein:

C1: transmitting terminal resonant capacitance L1: transmitting terminal resonant inductance

C2: receiving terminal resonant capacitance L2: receiving terminal resonant inductance

Embodiment

Below in conjunction with example and accompanying drawing to the present invention--but the intelligent LED torch cylinder design of wireless charging elaborates.

As shown in Figure 1, alternating current access D.C. regulated power supply with 220V, direct current through rectifying and voltage-stabilizing realization 50V is exported to emitter, in emitter, become ac voltage signal through high-frequency inversion, be loaded into the former limit of the loosely coupled transformer after the compensation, realize the resonance coupling with the receiving coil that is embedded in the LED flashlight, through the secondary rectification boosting circuit, the voltage of 220V is supplied with luminous host chipset by through the asymmetric LED matrix of arranging after engineering thermal design and the optimization, realize the high brightness of LED flashlight.

As shown in Figure 2, the 220V alternating current is delivered to a rectifier bridge that is comprised of 4 diodes through transformer pressure-reducing, passes through stable-pressure device again, is output as the direct current of 50V.

As shown in Figure 3, the direct current of 50V is given two MOSFET, they can alternate conduction, produce alternating current, output to the LC resonant circuit of back, C1 is resonant capacitance, and L1 is resonant inductance, their parallel resonances to be improving tranmitting frequency, thereby electric energy is sent to receiving terminal with the form of frequency electromagnetic waves.

As shown in Figure 4, that luminous host chipset is the LED matrix through the non-homogeneous arrangement mode of employing behind the optimizing thermal solution, reduce gradually the spacing between adjacent two LEDs from the luminous plaque center to both sides, thereby on the decrease when the heart temperature difference, reduce the mean temperature of whole luminous plaque, improve radiating efficiency.

As shown in Figure 5, consist of new antiresonant circuit by capacitor C 2 and inductance L 2, during with the emitter impedance matching, can realize the maximization wireless transmission of electric energy.Become direct current through the secondary rectification boosting circuit and supply with the LED flashlight.

As shown in Figure 6, be a secondary rectifier bridge booster circuit that is connected with receiving system.

Claims

1. but the intelligent LED torch cylinder of wireless charging design is characterized in that also being provided with: D.C. regulated power supply, be equipped with rectification circuit No. one time; Emitter; Luminous host chipset is by forming the embedded receiving system of flashlight and secondary rectifier bridge booster circuit through the asymmetric LED matrix of arranging after engineering thermal design and the optimization.

2. but the intelligent LED torch cylinder of wireless charging according to claim 1 design, be further characterized in that, the direct current of described emitter, but practical function: 50V is given two MOSFET, and they can alternate conduction, produce alternating current, output to the LC resonant circuit of back, C1 is resonant capacitance, and L1 is resonant inductance, their parallel resonances to be improving tranmitting frequency, thereby electric energy is sent to receiving terminal with the form of frequency electromagnetic waves.

3. but the intelligent LED torch cylinder of wireless charging according to claim 1 design, be further characterized in that, described luminous host chipset is comprised of the LED matrix through the non-homogeneous arrangement mode of employing behind the optimizing thermal solution, reduces gradually the spacing between adjacent two LEDs from the light fixture center to both sides.