Wireless power transfer coil unit: Development of ultra-thin receiving coil unit for wireless power transfer

Jul 10, 2012

TDK Corporation announced the development of a TDK wireless power transfer coil unit designed for Smartphones and other mobile devices. The receiving coil designed for integration in smartphones and similar represents an industry-leading achievement, featuring a thickness of a mere 0.57 mm.

The development reflects TDK's extensive expertise in fields such as magnetic materials technology and process technology, and involved the creation of a unique, extremely thin and flexible metal magnetic sheet. As a result, the coil unit not only is ultra thin and lightweight, it also is highly resistant to shock and therefore provides excellent reliability. Furthermore, in spite of its 0.57 mm profile, the coil's design minimizes the tendency towards rising resistance and achieves a power that allows clearing the requirements of the WPC "Qi" standard. The low height of the unit is a key aspect for use in Smartphones. At this point, output current is on the order of 0.5 to 0.6 , but an even thinner 0.50 mm type with equal or better output current is already in development, with a view towards starting mass production in 2013.

As smartphones incorporate more and more functions, their also tends to increase, making charging of the battery a more frequent requirement. With the aim of establishing an infrastructure environment that allows easy charging anywhere at any time, the WPC and other promotional organizations are working towards the standardization of wireless power transfer. To contribute to these efforts and meet the expected rise in demand in the near future, TDK is developing and offering products that reflect its extensive know-how in a number of relevant fields. This includes technology and process technology, winding pattern technology expertise gained through the manufacture of a wide range of various kinds of coils, as well as magnetic circuit design technology.

Explore further: Supercomputer for astronomy 'ATERUI' upgraded to double its speed

add to favorites email to friend print save as pdf

Related Stories

Multilayer ceramic coils with the highest inductance

Aug 26, 2011

TDK-EPC, a group company of TDK Corporation, presents the TDK MLG0603S series of multilayer ceramic coils with the world’s highest inductance values. These 0603 inductors feature an inductance of up to ...

Cable-free charging of electric cars via coils

Apr 11, 2011

In the future, motorists will no longer need a cable to recharge the batteries of their electric cars, thanks to a development project for inductive charging, which Siemens presented at Hannover Messe 2011. ...

Flexible and transparent OLEDs from TDK (w/ Video)

Oct 06, 2010

(PhysOrg.com) -- Flexible and translucent organic displays have been developed by TDK for use in “bendable” mobile phones and other gadgets, and the bendable display is expected to go into mass production ...

Recommended for you

Hackers force message on websites via US firm

2 hours ago

A U.S. firm that helps connect more than 700 companies with customers through social media says a Syrian group hacked the company's web address to upload a message to other websites.

Shedding light on solar power

8 hours ago

Everyone wants to save energy, but not everyone knows where to start. Grid Resources, a startup based out of the Centre for Urban Energy's iCUE incubator, is developing a new website that seeks to help homeowners ...

Energy transition project moves into its second phase

8 hours ago

Siemens is studying new concepts for optimizing the cost-effectiveness and technical performance of energy systems with distributed and fluctuating electricity production. The associated IRENE research project ...

User comments : 1

Adjust slider to filter visible comments by rank

Display comments: newest first

unknownorgin
not rated yet Jul 19, 2012
This same type of coil was used on vacume tube era radios and later on metal detectors and there is a photograph of tesla experimenting with this type of coil.

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.