THE NE X T GENER ATION OF
WIRELESS POWER
Wireless power transfer based on magnetic resonance has distinct advantages
over first-generation induction systems and is poised to go mainstream.
The Potential World Market for Wireless Power
Market will expand from
predominantly mobile phones
and tablets to include:
Laptops and peripherals
Wearables
Home appliances
Electric vehicles
Medical devices
Other applications
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1.3 BILLION
$ 8.5 BILLION
wireless power receivers &
transmitters expected by 2018
wireless power market total
revenues expected by 2018
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Source IHS – “The World Market for Wireless Power” – 2014 edition
Milestones in
Magnetic Resonance
Wireless Power Transfer
2005
Understanding Resonance
A beeping mobile phone wakes MIT
professor Marin Soljačić , who started
thinking of physical phenomena that
could power devices without wires
RESONANCE
Stored energy oscillates
between two modes,
such as when sound
energy transfers to
physical vibrations at
the resonant pitch.
Soljačić and colleagues at MIT develop the physical
theory of how to enable strongly coupled magnetic
resonators to transfer power over distances—file
first patent application
2006
The MIT wireless power research drove massive
interest from the press and public, resulting in more
than 300 print articles and radio reports worldwide
2007
MAGNETIC
RESONANCE
MIT team lead by Soljačić
demonstrates highly resonant
wireless power transfer concept
by lighting bulb wireless over
2 meters—results published in
Science Magazine
Energy oscillates
between magnetic (B)
and electric fields (E)
WiTricity Corporation is formed
to commercialize highly resonant
wireless power transfer
2010
MIT granted the first patent for highly resonant wireless
power transfer, which it licenses exclusively to WiTricity
2012
The Alliance for Wireless Power (A4WP) is formed to
commercialize charging based on magnetic resonance
2013
A4WP unveils the Rezence™ brand to
help standardize wireless charging for
consumer devices
2014
B
MAGNETIC FIELDS
E
ELECTRIC FIELDS
HIGHLY RESONANT
WIRELESS POWER
TRANSFER
WiTricity joins the board of the A4WP
WiTricity low-loss
magnetic resonators
tuned to a common
resonant frequency
can transfer energy
efficiently over
distances that can be
several times as large
as the resonators
themselves.
Toyota and Honda begin
field testing wireless
charging systems for
their electric vehicles
Intel announces plans to develop wireless
power transfer systems for laptops, tablets
and smartphones based on Rezence
WiTricity granted 86th patent for wireless power
transfer systems based on magnetic resonance
Wireless Power Standards Landscape
RESONANT
LOW POWER
HIGH POWER
INDUCTIVE
Benefits of Resonant Wireless Power Transfer
FLEXIBLE ORIENTATION
Rotation and movement in the x, y, and z axes
SOURCE
SUPPORTS MULTIPLE DEVICES
Differing sizes and power requirements
CAPTURE DEVICE
SOURCE
POWERS THROUGH SURFACES
Wood, plastic, granite, concrete, and more
EXTENDED WIRELESS RANGE
Using passive resonant repeaters
SOURCE
SOURCE
RESONANT
REPEATER
Components of a Resonant Wireless Power System
A wireless power transfer system based on magnetic resonance will include the following:
SOURCE DEVICE
CAPTURE DEVICE
Source Resonator
Capture Resonator
Amplifier
POWER
IN
Power
Control
Impedence
Matching
Network
(IMN)
MAGNETIC
FIELD
Source Coil
Capture Coil
Impedence
Matching
Network
(IMN)
Power
Control
Rectifier
Electromagnetic Shielding
Electromagnetic Shielding
WI-FI™ OR
BLUETOOTH™
Communication
Communication
POWER
OUT
Wireless Power Market Roadmap: 3 Distinct Phases
Rezence specification
creates common standard
for magnetic resonance
wireless charging
™
Massive deployment
of resonant charging
in public places
Volume shipments
of Rezence-based
consumer electronics
devices
Integrated circuits
(ICs) for induction
Ubiquitous
resonant charging
and power
Wireless charging
for implantable
medical devices
Some integrated
induction products
available
After market
induction systems
Deployment of
wireless charging of
EVs in public spaces
Volume shipments
of in-home wireless
charging for electric
vehicles
2007
2017
2014
Uses for Resonant Wireless Power Transfer Technology
CONSUMER
ELECTRONICS
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Smartphones
Notebooks & Peripherals
Wearables
Rechargeable Batteries
Drones & Robotics
AUTOMOTIVE
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Electric Vehicles
Hybrid Electric Vehicles
In-Vehicle Charging
MEDICAL
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Implantable Devices:
Heart Pumps, Ophthalmic
& Cochlear
Surgical & Handheld Devices
Mobile Equipment Carts
DEFENSE
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Soldier Electronics
Unmanned Underwater
Vehicles
Drones & Mobile
Robotics
To find out more about how you can wirelessly power
your products, please visit w w w.witricity.com