PRESENTATION ON WIRELESS CHARGING

PRESENTATION ON WIRELESS CHARGING

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PRESENTATION ON WIRELESS CHARGING - Overview

------------ PAGE 1 ------------ PRESENTATION ON WIRELESS CHARGING MANOJ KUMAR SID: 13207008 ME ELECTRONICS ------------ PAGE 2 ------------ INTRODUCTION • In wireless charging the current coming from the wall power outlet moves through the wire in the wireless charger, creating a magnetic field. The magnetic field creates a current in the coil inside the device. This coil is connected to the battery and the current charges the battery. The two induction coils in proximity combine to form an electrical transformer. ------------ PAGE 3 ------------ WORKING OF WIRELESS CHARGING SYSTEM • It works on the principle of Electromagnetic Induction. ------------ PAGE 4 ------------ • Induction chargers typically use an induction coil to create an alternating electromagnetic field from within a charging base station, and a second induction coil in the portable device takes power from the electromagnetic field and converts it back into electrical current to charge the battery. ------------ PAGE 5 ------------ Methods of Wireless Charging There are three types of wireless charging :- • Resonance Charging • Inductive Charging • Radio Charging ------------ PAGE 6 ------------ Resonance Charging : • It uses phenomenon of “ RESONANCE”, that causes an object to vibrate when energy of certain frequency is applied. • Two copper coils are used one attached to transmitter and another to receiver. • Both coils are tuned to same electromagnetic frequency. • These coils when placed close to one another power is transferred. ------------ PAGE 7 ------------ Examples:- • Electric cars • Robots • Vacuum Cleaners • Laptop computers and Other items that require large amounts of power. ------------ PAGE 8 ------------ Inductive Charging : • Inductive charging is one kind of short distance wireless charging. • This method works on the principle of “ ELECTROMAGNETIC INDUCTION” where the charger device will create an E. M field with alternating polarity using a coil of insulated copper wire and a similar coil will be placed inside the mobile device which will convert E. M field back to electric current there by charging the battery. ------------ PAGE 9 ------------ Examples:- • MP3 players. • Personal Digital Assistants ( PDA. s). • Electric toothbrushes. • Waterproof Vibrating Razors. and Other mid- sized items. ------------ PAGE 10 ------------ Radio Charging : • This method is on the basis that Radio Waves are widely in use to transmit and receive cellular telephone, television, radio and Wi- Fi. • A Radio wave once transmitted, propagates in all directions until it reaches an antenna tuned to proper frequency to receive it. • A transmitter plugged in to a socket, generates radio waves, when the receiver attached to the device is set to the same frequency as the transmitter, it will charge the device. s battery ------------ PAGE 11 ------------ Examples:- • Watches. • Hearing aids. • Medical implants. • Cell phones. • Wireless keyboards and Other charging devices with small batteries and low power requirements. ------------ PAGE 12 ------------ Block Diagram of Wireless charging System ------------ PAGE 13 ------------ System ------------ PAGE 14 ------------ System ------------ PAGE 15 ------------ System ------------ PAGE 16 ------------ System ------------ PAGE 17 ------------ NEED OF WIRELESS CHARGING „« To make the recharging of the mobile phones independent of their manufacturer and battery make. „« A new proposal has been made so as to make the recharging of the mobile phones is done automatically as you talk in your mobile phone. „« The microwave signal is transmitted from the transmitter along with the message signal using special kind of antennas called slotted wave guide antenna at a frequency is 2.45 GHz. ------------ PAGE 18 ------------ Advantages of Wireless Charging „« The need of different types of chargers by different manufacturers is totally eliminated „« Lower risk of ELECTRICAL SHOCK or shorting. „« Convenience „« Wireless energy transfer can potentially recharge the mobile phones without chords. ------------ PAGE 19 ------------ Disadvantages of Wireless Charging „« The transmitter and receiver also should be very powerful devices as the distance increases. „« Slower Charging. „« Wireless transmission of the energy causes some drastic effects to human body, because of its radiation. „« More costly. „« Practical possibilities are not yet applicable as there is no much advancement in this field. ------------ PAGE 20 ------------ APPLICATIONS OF WIRELESS CHARGING ------------ PAGE 21 ------------ • Wireless Charging Pad for mobile devices. ------------ PAGE 22 ------------ • In the car: As demonstrated by Fulton Innovation at CES 2011, we may also begin seeing electric- powered vehicles get powered up via a manhole- sized charging pad . ------------ PAGE 23 ------------ Other Applications: • Inductive Coupling- RFID. • In- Vehicle Charging. • Radio Charging. • Ultra Wideband. ------------ PAGE 24 ------------ WIRELESS CHARGING STANDARDS • Qi is a set of guidelines for inductive charging units. Right now it is a default standard. • It's rounded up 84 manufacturers, semiconductors, and telecom providers under its wing so far, a number which no other organizations have come close to matching. ------------ PAGE 25 ------------ Other Standards : ------------ PAGE 26 ------------ COMPANIES IN WIRELESS CHARGING TECHNOLOGY ------------ PAGE 27 ------------ TECHNOLOGY ------------ PAGE 28 ------------ WIRELESS CHARGING MARKET OUTLOOK ------------ PAGE 29 ------------ WIRELESS CHARGING MARKET ------------ PAGE 30 ------------ Current Players in the Wireless Charging • DELL - Dell has started giving the option of having wireless chargers in there customization option to the customers. • Palm Inc - This smart phone company announced in 2009 to launch touch stone models of phones with wireless charger as its standard accessory. • Hughes Electronics - This Company in collaboration with General motors introduced a battery operated car with the option of recharging it wireless. The car is named General Motors EV1 electric car. ------------ PAGE 31 ------------ • Evatran Company - A subsidiary of MTC Transformers began development of „ plug less power. in 2009. This is based on inductive charging system which will power electric car through wireless recharging technology. • Toshiba - They released a wireless powered television which was first in the world to have a powering mechanism of that kind ------------ PAGE 32 ------------ • Wireless Power Consortium - An alliance of 20 firms had formed this group to device open source standard for wireless charging technology. Some bug tickets include Philips, Sanyo, Nokia, Texas Instruments, research in Motion, Duracell, and Energizer etc. Their draft version is ready as of July 2010. Some companies like Samsung electronics and Ericson are associates of this group who will contribute standards to be part of this alliance. • IAV GmbH- This German Company is working on chargers which can be implemented in the road which would allow the car to be charged as it runs along the road surface. ------------ PAGE 33 ------------ Technologies in wireless charging ------------ PAGE 34 ------------ Wireless Charging System Scenarios ------------ PAGE 35 ------------ Wireless Charging Solutions ------------ PAGE 36 ------------ Wireless Charging for Consumers ------------ PAGE 37 ------------ Consumers ------------ PAGE 38 ------------ Consumers ------------ PAGE 39 ------------ Consumers ------------ PAGE 40 ------------ Consumers ------------ PAGE 41 ------------ Consumers ------------ PAGE 42 ------------ Consumers ------------ PAGE 43 ------------ Consumers ------------ PAGE 44 ------------ Wireless Charging Market ------------ PAGE 45 ------------ Wireless charging products ------------ PAGE 46 ------------ Conclusion „« A novel method of using the power of the microwave to charge the mobile phones without the use of wired chargers. „« This method provides great advantage to the mobile phone users to carry their phones anywhere even if the place is devoid of facilities for charging. ------------ PAGE 47 ------------ FUTURE SCOPE „« The wireless charging can even be done using the data exchange as now only its only been implemented for voice calls. „« With the advent of nanotechnology and MEMS the size of these rectennas can be brought down to molecular level. It has been theorized that similar devices, scaled down to the proportions used in nanotechnology, could be used to convert light into electricity at much greater efficiencies than what is currently possible with solar cells. This type of device is called an optical rectenna. ------------ PAGE 48 ------------ References • www. wikipedia. com • www. Howdostuffwork. com • www. WhatIs. com • www. google. com • www. 1000projects. com • www. ieee. com • www. chetanasprojects. com
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