DIY Wireless Charger: 7 Kauj Ruam (nrog Duab)

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:29

Hauv Cov Lus Qhia no, koj yuav mus paub yuav tsim koj tus kheej lub wireless charging rau ib qho khoom siv li cas?

Cov txheej txheem hluav taws xob wireless feem ntau poob rau hauv ob pawg, tsis muaj hluav taws xob thiab hluav taws xob tawg. Nyob ze thaj tsam lossis cov txheej txheem tsis siv hluav taws xob, lub zog tau hloov pauv los ntawm cov chaw sib nqus siv cov khoom sib txuas ua ke ntawm cov xaim hluav taws xob, lossis los ntawm cov tshuab hluav taws xob siv kev sib txuas sib txuas ntawm cov hlau hlau. Kev sib koom ua ke yog qhov siv ntau tshaj plaws thev naus laus zis wireless; nws daim ntawv thov suav nrog them nqi khoom siv xws li xov tooj thiab txhuam txhuam hluav taws xob, cim npe RFID, thiab them nyiaj rau cov khoom siv kho mob zoo ib yam li lub tshuab ua kom lub plawv mob plawv, lossis lub tsheb hluav taws xob.

Dab tsi yog Inductive Coupling:

Hauv kev sib txuas inductive (hluav taws xob induction lossis hloov pauv hluav taws xob, IPT), lub zog xa mus ntawm cov coils ntawm cov hlau los ntawm kev sib nqus. Tus xa thiab tus txais cov coils ua ke hloov pauv (saib daim duab). Ib qho kev hloov pauv tam sim no (AC) los ntawm lub tshuab xa hluav taws xob (L1) tsim qhov kev sib nqus sib nqus (B) los ntawm Ampere txoj cai. Cov hlau nplaum hla dhau qhov tau txais cov kauj (L2), qhov uas nws ua rau hloov pauv EMF (qhov hluav taws xob) los ntawm Faraday txoj cai lij choj ntawm induction, uas tsim qhov hloov pauv tam sim no hauv tus txais. kom ncaj qha tam sim no (DC) los ntawm lub rectifier hauv tus txais, uas ua rau lub nra hnyav.

Resonant inductive coupling

Raws li kev sib txuas hom kev xav tau thov los ntawm Marin Soljačić ntawm MIT, resonant inductive coupling (electrodynamic coupling, [12] xav tau sib txuas ua ke sib nqus sib nqus) yog ib daim ntawv ntawm kev sib txuas inductive uas lub zog hloov pauv los ntawm cov chaw sib nqus (B, ntsuab) nruab nrab ntawm ob lub resonant circuits (tuned circuits), ib qho ntawm tus xa khoom thiab ib qho hauv tus txais (saib daim duab, sab xis). Txhua qhov hluav taws xob resonant muaj cov kauj hlau txuas nrog lub tshuab hluav taws xob, lossis tus kheej-resonant kauj lossis lwm yam resonator nrog lub peev xwm sab hauv. Ob qho no tau hloov kho kom sib npaug ntawm qhov sib npaug sib npaug. Cov resonance ntawm cov coils tuaj yeem ua rau muaj kev sib txuas ntau ntxiv thiab hloov pauv lub zog.

Yog tias koj xav paub ntau ntxiv txog lub ncauj lus ua raws qhov txuas no:

en.wikipedia.org/wiki/Wireless_power_trans…

Kauj Ruam 1: KOJ YUAV TSUM TAU !!!!

Koj yuav xav tau cov hauv qab no kom pib nrog:

Dot PCB Board (x1)

xaim 1 hli tuab (7 m)

IC 7805 (x1)

IRFZ44N MOSFET (x4)

IR2110 MOSFET tsav IC (x2)

555 lub sijhawm IC (x1)

CD4049 IC (X1)

10K trim lauj kaub [103] (x1)

10k resistor (x4)

10 OHM resistor (x4)

0.1uF capacitor [104] (x5)

10 nf capacitor [103] (x1)

2.2nF capacitor [222] (x1)

10uF capacitor [electrolytic] (x3)

47uF capacitor [hluav taws xob] (x1)

47nF capacitor [polyester] (x2)

Ntsia Hlau Terminals

IN5819 schotky diode (x6)

Mini USB txuas [txiv neej] (x1)

DC - DC 5v Buck hloov

Yog li cia pib nrog kev tsim.

Kauj ruam 2: Winding lub COILS !!?

winding ib txoj hlua zoo meej yog qhov nyuaj me ntsis. Ua ntej tshaj plaws txiav ib lub voj voos me me ntawm txoj kab uas hla 1 cm nrog daim duab los qhia, muab lo rau ib daim duab los qhia thiab ua lub qhov nyob hauv nruab nrab. Ntawm no, coj cov xaim ntawm 1 hli tuab thiab hla nws los ntawm lub qhov ua hauv nruab nrab (qhov no yog qhov ntxiv me ntsis ntawm xaim rau kev sib txuas hluav taws xob). Siv cov kua nplaum ntau rau ntawm qhov chaw thiab pib ua pa los ntawm ncig lub voj voog (kua nplaum pab tuav txoj hlua cua hauv qhov chaw). Khaws rau ntawm qhov cua kom txog thaum tus lej tig los ua 30. Ua 2 yam zoo sib xws.

Kauj Ruam 3: Ua Kev Ntsuas:

Yog tias koj muaj lub LCR meter koj tuaj yeem hla cov kauj ruam no. Yog tias koj tsis muaj LCR 'meter', tsim lub ntsuas hluav taws xob los ntawm Arduino Uno thiab op-amp (LM339). Kuv tau coj qhov kev ntsuas no los ntawm cov vev xaib hauv qab no, koj tuaj yeem nrhiav cov ntaub ntawv ntau ntxiv txog qhov ntsuas hluav taws xob hauv lub vev xaib nws tus kheej. (Tus lej kuj tseem muaj nyob hauv lub vev xaib nws tus kheej)

Tam sim no, ntsuas qhov inductance ntawm coils nrog lub ntsuas no thiab yog tias koj muaj txhua yam xwm txheej zoo ib yam li kuv li uas yog 1.0 hli tuab xaim, sab hauv txoj kab uas hla ntawm lub kauj = 1.0 cm, tus lej tig = 30.you yuav tsum tau txais qhov inductance ntawm coil nyob ib ncig ntawm 21.56 uH 26.08 uH vim tsis paub txog qhov ua yuam kev. Tam sim no tom qab tau txais qhov inductance, koj yuav tsum suav qhov Resonant zaus ntawm LC Circuit.) koj tuaj yeem siv lub tshuab xam zauv online no xam qhov zaus ntawm resonance.https://www.deephaven.co.uk/lc.html Hauv kuv qhov xwm txheej, L = 26.08 uH thiab C = 47 nF uas muab qhov zaus resonant ntawm F = 143.75 Khz. tam sim no, peb yuav tsum tsim cov oscillator Circuit, nws qhov kev sib hloov yog qhov zaus 143.75 Khz.

Kauj Ruam 4: Oscillator Circuit…

Muaj ntau txoj hauv kev los ua qhov oscillator Circuit. Hauv Circuit no peb yuav siv 555 timer IC los tsim lub teeb liab ntawm 143.75 Khz tab sis nws tsis txaus los tsav LC Circuit (xa cov kauj nrog lub tshuab hluav taws xob ua ntu zus). yog li peb yuav tsum tsim tus choj H mosfet tsav tsheb kom tsav LC Circuit. Ua ib lub voj voos los tsav LC Circuit. Koj tsuas yog ua raws cov kab ke uas kuv tau txuas ntawm no. Ua haujlwm: Lub 555 timer IC hauv Astable Multivibrator nrog 50% lub voj voog ua haujlwm tsim cov tseev kom muaj oscillating uas yog pub rau IR2110 IC. H tag nrho H choj Mosfet tus tsav tsheb mus rau yuav tso tawm cov xwm txheej yoj thaum cov tswv yim A = D thiab B = C thiab B (C) hloov pauv lub xeev A (D). Yog li Inverter IC (4049) tau siv los ua qhov no. Qhov no oscillating Voltage tsim qhov sinusoidal tam sim no los ntawm lub tshuab xa hluav taws xob uas ua rau muaj qhov sib nqus sib nqus nyob ib puag ncig nws.when tus txais lub tshuab hluav taws xob ua ke nrog lub tshuab hluav taws xob, uas nws lub zog sib xws zoo ib yam li ntawm lub tshuab xa hluav taws xob tau muab tso rau hauv nws qhov chaw sib nqus tam sim no. induced tam sim no tau hloov pauv mus rau dc siv tus choj txuas hluav taws xob thiab tswj hwm rau 5 V DC kom them lub xov tooj ntawm tes siv pob hloov pauv.

Cov uas xav ua cov ntawv luam tawm ntawm txoj haujlwm no, Kuv tau txuas Eagle board cov ntaub ntawv nrog, txheeb xyuas nws.

Kauj Ruam 5: #Final Ntsuas:

Tam sim no, tom qab tsim txhua lub voj voog raws li cov txheej txheem ntsuas txhua yam thiab ntsuas txhua yam ntxiv. Yog tias koj muaj ib lub cuab yeej los ntsuas qhov zaus nws tsis ua li cas, yog tias tsis yog xa cov codeto Arduino Uno hauv qab no. chaw nyob web:

Ntsuas qhov zaus ntawm tus lej thib 3 ntawm 555 timer IC.xij ntsuas qhov zaus hloov kho 10K lub lauj kaub kom tau txais qhov xav tau zaus (piv txwv li, 143.75 Khz).tau ntsuas ntau lub ntsuas ntsuas cov ntsuas hauv qab no: Cov Khoom Siv Hluav Taws Xob [Vin] (piv txwv li., xyuas seb nws puas yog 12 V lossis tsis yog). Input Tam sim no [Iin] (piv txwv li, tam sim no rau hauv Circuit Court los ntawm 12 v fais fab mov). Output Voltage [Vout] (piv txwv li, xyuas seb nws puas yog 5 V lossis tsis yog). Tawm Tawm Tam Sim No [Iout] (piv txwv li, tam sim no rau lub xov tooj ntawm lub tshuab hloov pauv). Calculations: Pin = Vin * IinPout = Vout * IoutEfficiency (n) = Pout / PinMy nyeem: Vin = 11.8 V; Iin = 310 mA; Vout = 5.1 V; Vin = 290 mA uas muab kev ua tau zoo ntawm 40.4%

Kauj Ruam 6: #Cov ntaub ntawv kaw

Kuv tau rov siv lub thawv txawb qub qub raws li lub hauv paus raws li koj pom hauv daim duab.koj tau ua tiav, koj tuaj yeem them lub xov tooj ntawm tes lossis ib lub cuab yeej twg uas xav tau 5 volts, them tam sim no yog 300 mA. (Uas yog qeeb rau cov xov tooj). Lub zog tso tawm tuaj yeem nce ntxiv tab sis qhov ua tau zoo yuav txo qis. Qhov no tuaj yeem txuas nrog txhua lub cuab yeej thiab tuaj yeem raug them wirelessly.

Kauj Ruam 7: Moment ntawm Qhov Tseeb !!

Vim li cas thiaj tsis tsim nyog:

Raws li koj tuaj yeem pom qhov ua tau zoo ntawm qhov no tsawg heev, tab sis vim li cas? Nws yog vim huab cua tsis zoo txuas, cov tawv nqaij cuam tshuam thiab ua yuam kev inductance ntawm tes winded kauj thiab zaus ntawm oscillator Circuit Court nws tus kheej tsis ruaj khov.

yog li peb yuav daws cov teeb meem no li cas ??? zoo peb tuaj yeem siv hom tshwj xeeb xaim hu ua LITZ WIRE kom dhau los ntawm cov tawv nqaij. Cov nyhuv uas tam sim no tsuas yog dhau los ntawm qee qhov tob ntawm tus neeg xyuas pib ntawm qhov ntau zaus yog hu ua daim tawv nqaij. Peb kuj tseem tuaj yeem siv lub hauv paus Ferrite txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhim kho kev sib txuas ntawm ob coils. Tau kawg muaj ntau qhov coils hauv cov khw hauv online nrog cov kev xav tau saum toj no uas tuaj yeem siv los ua kom muaj txiaj ntsig zoo ntawm lub wireless them.

Yog tias koj xav tsim qhov no rau lub hom phiaj ua qauv qhia cov kauj saum toj no txaus. Tab sis, Yog tias koj xav siv qhov no rau txhua lub hom phiaj txhua hnub Kuv qhia koj kom yuav ib qho online.

Yog tias koj nyiam txoj haujlwm no thiab pom nws qee yam ntaub ntawv thiab muaj txiaj ntsig zoo, thov pov npav rau kuv txoj haujlwm.

Ua tsaug.