CN206004424U - A kind of electromagentic resonance formula wireless phone charging system - Google Patents

Abstract

The utility model discloses a kind of electromagentic resonance formula wireless phone charging system, including power management module, radiating circuit, receive change-over circuit and charging circuit, described power management module connects unidirectional current and alternating current respectively, power management module is also connected with radiating circuit, electromagnetic wave launched by radiating circuit, electromagnetic wave receives through receiving change-over circuit after propagating in the air, transmits reception electric energy with this, receives change-over circuit and be also connected with charging circuit.This utility model electromagentic resonance formula wireless phone charging system structure is simple, achieve wireless charging using electromagentic resonance mode, its charging distance is remote, high conversion efficiency, and allow large range of dislocation, therefore there is saves energy, easy to use and stable performance.

Description

A kind of electromagentic resonance formula wireless phone charging system

Technical field

This utility model is related to a kind of charging system, specifically a kind of electromagentic resonance formula wireless phone charging system.

Background technology

Radiotechnics is used for communicating, popular nearly 100 years in the whole world, from radiobroadcasting originally with no Line telegram, development satellite till now and microwave communication, and spread to the whole world almost each personal mobile communication, wireless Network, GPS etc., radio communication greatly changes production and the life style of people, does not have radio communication, informationized society Target can not be discussed, however, radio communication transmission is all faint information, rather than the energy that power is larger, therefore permitted How portable mobile product extremely easy to use, will aperiodically connect electrical network and be charged, also therefore have to stay Under various sockets and connection cable, this is difficult to the sealing technology realizing having water resistance, and this personalized cable The charger making different product is difficult to general, if thoroughly removing these tails, mobile terminal device is obtained with really Freedom, be also easy to realize sealing and waterproof, this target necessarily require energy equally to realize being wirelessly transferred also like information although The idea of the Wireless transceiver of energy is had it long ago, but because cannot break through radio transmission apparatus volume miniaturization and transmission always The bottlenecks such as energy loss, make it can not enter practical field always, with the popularization of the equipment such as smart mobile phone, wireless charging is especially Get more and more people's extensive concerning.

Utility model content

The purpose of this utility model is to provide a kind of electromagentic resonance formula wireless phone charging system, to solve above-mentioned background The problem proposing in technology.

For achieving the above object, this utility model provides following technical scheme：

A kind of electromagentic resonance formula wireless phone charging system, including power management module, radiating circuit, receives change-over circuit And charging circuit, described power management module connects unidirectional current and alternating current respectively, and power management module is also connected with radiating circuit, Electromagnetic wave launched by radiating circuit, and electromagnetic wave receives through receiving change-over circuit after propagating in the air, transmits reception electric energy with this, receives Change-over circuit is also connected with charging circuit.

As preferred version of the present utility model：Described power management module include rectifier bridge D1, chip U1, chip U2 and The port 1 of chip U3, rectifier bridge D1 and port 3 connect 220V alternating current by transformator T1, and the port 2 of rectifier bridge D1 connects electricity Hold C1, the foot 1 of electric capacity C2 and chip U1, the foot 2 of chip U1 connects the negative electrode of diode D2, the anode of diode D2 connects electric capacity The other end of C1, the other end of electric capacity C2, electric capacity C3, electric capacity C4, the negative electrode of diode D3, the negative electrode of diode D4, relay The foot 4 of D6, the port 4 of the foot 2, the foot of chip U3 and rectifier bridge T of chip U2, foot 2 connection resistance R2 and 24V of relay D6 is straight Stream electricity, the other end of resistance R2 connects the anode of diode D4, and the foot 3 of chip U2 connects 3 feet 1 connecting chip U3 and 12V is straight Stream electricity, the foot 5 of the foot 1 connection relay D6 of chip U2, the foot 3 connection 5V unidirectional current of chip U3, the model 7805 of chip U1, The model 7812 of chip U2, the model 7805 of chip U3.

As preferred version of the present utility model：Described radiating circuit includes chip U4, potentiometer Rf, resistance R3, resistance R5, audion Q1, inductance L1, electric capacity C5, electric capacity C6 and electric capacity C7, described chip U4 model 1.8V 13.56MHZ-20PPM ActiveCrystal oscillator.

As preferred version of the present utility model：Described reception change-over circuit and charging circuit include audion Q4, chip U3, resistance R11 and audion Q5, diode D5-D8 forms rectifier bridge, and the voltage input end of rectifier bridge passes through electric capacity Cr and electric capacity Ct connects inductance L2, and the voltage output end of rectifier bridge connects electric capacity C9, electric capacity C10, resistance R5, resistance R6, diode (LED) 2 and The emitter stage of audion Q3, the other end of resistance R5 connects the base stage of resistance R8 and audion Q3, and the colelctor electrode of audion Q3 is even Connect diode (LED) 3, the other end of diode (LED) 2 connects the base stage of resistance R9 and audion Q5, the other end of resistance R9 connects The colelctor electrode of audion Q4, the base stage of audion Q4 connects resistance R10, and the other end of resistance R10 connects the other end of resistance R8 With the pin 6 of chip U3, the pin 2 connection resistance R11 of chip U3, the other end of resistance R11 connects voltage Table V, ammeter mA With accumulator BT2, the pin 2 connection resistance R12 of chip U3, the other end of resistance R12 connects the other end of resistance R4, potentiometer One fixing end of RP2 and the negative electrode of three end adjustable reference source TL431, the anode of three end adjustable reference source TL431 connects current potential Another fixing end of device RP2 is simultaneously grounded, and the reference pole of three end adjustable reference source TL431 connects the sliding end of potentiometer RP2, electricity The other end of resistance R6 connects resistance R7 and switch SW, and the other end of switch SW connects the other end of resistance R7 and sending out of audion Q5 Emitter-base bandgap grading, the colelctor electrode of audion Q5 connects the other end of ammeter mA, model OPA335 of chip U3.

Compared with prior art, the beneficial effects of the utility model are：This utility model electromagentic resonance formula wireless phone fills Electric system structure is simple, achieves wireless charging, high conversion efficiency using electromagentic resonance mode, and allows large range of mistake Position, therefore has the advantages that saves energy, easy to use and stable performance.

Brief description

Fig. 1 is the theory diagram of electromagentic resonance formula wireless power；

Fig. 2 is the circuit diagram of power management module；

Fig. 3 is the circuit diagram of radiating circuit；

Fig. 4 is the circuit diagram receiving change-over circuit.

Specific embodiment

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely description is it is clear that described embodiment is only a part of embodiment of this utility model rather than whole Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of making creative work The every other embodiment being obtained, broadly falls into the scope of this utility model protection.

Refer to Fig. 1-4, in this utility model embodiment, a kind of electromagentic resonance formula wireless phone charging system, including electricity Source control module, radiating circuit, reception change-over circuit and charging circuit, described power management module connects unidirectional current and friendship respectively Stream electricity, power management module is also connected with radiating circuit, and electromagnetic wave launched by radiating circuit, and electromagnetic wave turns through reception after propagating in the air Change circuit to receive, reception electric energy is transmitted with this, receive change-over circuit and be also connected with charging circuit.

Power management module includes rectifier bridge D1, chip U1, chip U2 and chip U3, the port 1 of rectifier bridge D1 and port 3 220V alternating current is connected by transformator T1, the port 2 of rectifier bridge D1 connects electric capacity C1, the foot 1 of electric capacity C2 and chip U1, chip The foot 2 of U1 connects the negative electrode of diode D2, and the anode of diode D2 connects the other end of electric capacity C1, the other end of electric capacity C2, electricity Hold C3, electric capacity C4, the negative electrode of diode D3, the negative electrode of diode D4, the foot 4 of relay D6, the foot 2 of chip U2, chip U3 The port 4 of foot and rectifier bridge T, the foot 2 of relay D6 connects resistance R2 and 24V unidirectional current, and the other end of resistance R2 connects two poles The anode of pipe D4, the foot 3 of chip U2 connects foot 1 and the 12V unidirectional current of 3 connection chip U3, and the foot 1 of chip U2 connects relay D6 Foot 5, the foot 3 of chip U3 connects 5V unidirectional current, the model 7805 of chip U1, the model 7812 of chip U2, chip U3's Model 7805.

Radiating circuit includes chip U4, potentiometer Rf, resistance R3, resistance R5, audion Q1, inductance L1, electric capacity C5, electric capacity C6 and electric capacity C7, described chip U4 model 1.8V 13.56MHZ-20PPM is activeCrystal oscillator.

Receive change-over circuit and charging circuit includes audion Q4, chip U3, resistance R11 and audion Q5, diode D5- D8 forms rectifier bridge, and the voltage input end of rectifier bridge passes through electric capacity Cr and electric capacity Ct and connects inductance L2, the voltage output of rectifier bridge End connects electric capacity C9, electric capacity C10, resistance R5, the emitter stage of resistance R6, diode (LED) 2 and audion Q3, and resistance R5's is another End connects the base stage of resistance R8 and audion Q3, and the colelctor electrode of audion Q3 connects diode (LED) 3, diode (LED) 2 another End connects the base stage of resistance R9 and audion Q5, the colelctor electrode of the other end connecting triode Q4 of resistance R9, the base of audion Q4 Pole connects resistance R10, and the other end of resistance R10 connects the other end of resistance R8 and the pin 6 of chip U3, the pin 2 of chip U3 Connect resistance R11, the other end of resistance R11 connects voltage Table V, ammeter mA and accumulator BT2, and the pin 2 of chip U3 connects The other end of resistance R12, resistance R12 connects the other end, a fixing end of potentiometer RP2 and the three end adjustable references of resistance R4 The negative electrode of source TL431, the anode of three end adjustable reference source TL431 connects another fixing end of potentiometer RP2 and is grounded, three ends The reference pole of adjustable reference source TL431 connects the sliding end of potentiometer RP2, and the other end of resistance R6 connects resistance R7 and switch The other end of SW, switch SW connects the other end of resistance R7 and the emitter stage of audion Q5, and the colelctor electrode of audion Q5 connects electricity The other end of flow table mA, model OPA335 of chip U3.

Operation principle of the present utility model is：Electric energy transmitting portion：Electromagentic resonance formula wireless charging is in original electromagnetic induction Improved on circuit base and precisely modulated, to reach electromagentic resonance transmission.This radio energy transmitting element Power supply has two kinds:220V exchange and 24V direct current, are selected by relay, as shown in Figure 2.According to exchange preferential principle, In figure relay 2 foot is connected with DC source 24V for normally-closed contact.Under normal circumstances, when there being Alternating Current Power Supply, rectifying and wave-filtering Carry out voltage stabilizing by 7805 stabilivolts, export 13.2V voltage, LED D3 luminescence display simultaneously, if alternating current exists, select exchange Power supply, simultaneously switches off direct current supply, in AC outage, then automatic switchover direct current supply, with 24V direct current supply then LED D4 Luminescence display.The Wireless transceiver of electric energy mainly passes through the electromagentic resonance realization that transmitting coil and receiving coil are realized, for ensureing foot Enough power and efficiency as high as possible, should select higher modulating frequency, simultaneously the high frequency characteristics of device to be considered.

Electric energy receives and charge control part：As shown in figure 3, under normal circumstances, receiving coil L2 and transmitting coil L1 phase Away from only several centimetres, and close to coaxial, now can obtain higher efficiency of transmission.Electric energy receives and charging control circuit unit Principle as shown in Figure 3.The sinusoidal voltage of the transmitting electromagnetism same frequency that L2 sensing obtains.Through bridge rectifier and the filter of C9 electric capacity Ripple, obtains DC voltage.Sole source as charge control part.By R4, RP2 and TL431 structure by R4, RP2 and TL431 constitutes end of charge voltage 4. 15V that Precision reference voltage is lithium ion battery, and the homophase being connected to amplifier U3 through R12 is defeated Enter end 3.When the inverting input 2 of U2 is less than 4. 15V, the high potential one side of U3 output makes Q4 saturation thus at LED2 two ends Forward conduction characteristic obtains the burning voltage of about 2V, and R5 makes Q3 end simultaneously, and LED3 does not work.

Wireless charging technology has occurred before this, but the more convenient practicality of this new invention, and being placed on can sphere of action Any position is just chargeable, needs to be accurately positioned, can be filled with several equipment simultaneously unlike some former technology Electricity.The magnetic field that charger produces, because using resonance transfer, utilizes the thing of magnetic recording data to the neighbouring credit card, video-tape etc. Product will not produce impact.

Claims (4)

1. a kind of electromagentic resonance formula wireless phone charging system, including power management module, radiating circuit, receive change-over circuit and It is characterised in that described power management module connects unidirectional current and alternating current respectively, power management module is also connected with charging circuit Radiating circuit, electromagnetic wave launched by radiating circuit, and electromagnetic wave receives through receiving change-over circuit after propagating in the air, transmits reception with this Electric energy, receives change-over circuit and is also connected with charging circuit.

2. electromagentic resonance formula wireless phone charging system according to claim 1 is it is characterised in that described power management mould Block includes rectifier bridge D1, chip U1, chip U2 and chip U3, and the port 1 of rectifier bridge D1 and port 3 are connected by transformator T1 220V alternating current, the port 2 of rectifier bridge D1 connects electric capacity C1, the foot 1 of electric capacity C2 and chip U1, and the foot 2 of chip U1 connects two poles The negative electrode of pipe D2, the anode of diode D2 connects the other end of electric capacity C1, the other end of electric capacity C2, electric capacity C3, electric capacity C4, two poles The negative electrode of pipe D3, the negative electrode of diode D4, the foot 4 of relay D6, the port of the foot 2, the foot of chip U3 and rectifier bridge T of chip U2 The foot 2 of 4, relay D6 connects resistance R2 and 24V unidirectional current, and the other end of resistance R2 connects the anode of diode D4, chip U2 Foot 3 connect the 3 connection feet 1 of chip U3 and 12V unidirectional current, the foot 1 of chip U2 connects the foot 5 of relay D6, the foot 3 of chip U3 Connect 5V unidirectional current, the model 7805 of chip U1, the model 7812 of chip U2, the model 7805 of chip U3.

3. electromagentic resonance formula wireless phone charging system according to claim 1 is it is characterised in that described radiating circuit bag Include chip U4, potentiometer Rf, resistance R3, resistance R5, audion Q1, inductance L1, electric capacity C5, electric capacity C6 and electric capacity C7, described core The active crystal oscillator of piece U4 model 1.8V 13.56MHZ-20PPM.

4. electromagentic resonance formula wireless phone charging system according to claim 1 is it is characterised in that described reception conversion is electric Road and charging circuit include audion Q4, chip U3, resistance R11 and audion Q5, and diode D5-D8 forms rectifier bridge, rectification The voltage input end of bridge passes through electric capacity Cr and electric capacity Ct and connects inductance L2, and the voltage output end of rectifier bridge connects electric capacity C9, electric capacity C10, resistance R5, the emitter stage of resistance R6, diode (LED) 2 and audion Q3, the other end of resistance R5 connects resistance R8 and three poles The base stage of pipe Q3, the colelctor electrode of audion Q3 connects diode (LED) 3, and the other end of diode (LED) 2 connects resistance R9 and three poles The base stage of pipe Q5, the colelctor electrode of the other end connecting triode Q4 of resistance R9, the base stage of audion Q4 connects resistance R10, resistance The other end of R10 connects the other end of resistance R8 and the pin 6 of chip U3, and the pin 2 of chip U3 connects resistance R11, resistance R11 The other end connect voltage Table V, ammeter mA and accumulator BT2, the pin 2 of chip U3 connects resistance R12, and resistance R12's is another One end connects the negative electrode of the other end, a fixing end of potentiometer RP2 and three end adjustable reference source TL431 of resistance R4, three ends The anode of adjustable reference source TL431 connects another fixing end of potentiometer RP2 and is grounded, three end adjustable reference source TL431's Connect the sliding end of potentiometer RP2 with reference to pole, the other end of resistance R6 connects resistance R7 and switch SW, and the other end of switch SW is even The other end of connecting resistance R7 and the emitter stage of audion Q5, the colelctor electrode of audion Q5 connects the other end of ammeter mA, chip Model OPA335 of U3.