Document No: Source: Contact: GSC Session: Agenda Item:

GSC16-PLEN-31

TTA Seung-ok LIM PLENARY 6.13

Wireless Charging System Seung-ok Lim TTA

Halifax, 31 Oct – 3 Nov 2011 ICT Accessibility For All

• GSC16-PLEN-31

Wireless Charging System

Transfer electric power to mobile nearby devices (less than several meters) and charge batteries

Halifax, 31 Oct – 3 Nov 2011 ICT Accessibility For All

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WiTricity-Haire

 WiTricity, a spin-off company from MIT  Power transfer to Full HD TV in CES 2010 

Intel

 12W power transfer to netbook in 3feet  Receiver coils in the cover of netbook  Independent standardization activity on 100W wireless power transfer 

Sony

 Power transfer to 22 LCD TV 60W  Efficiency: about 80% @ 50cm  Charging distance increases by repeaters

Technical Trends

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Qualcomm

 Announcement of eZone, a wireless power transfer system, in CES2009  Maximum supportable devices: 2  Maximum charging distance: 0.2m

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Qualcomm-WiPower

 Takeover WiPower in 2010 for developing a wireless power transfer system  Developing power transfer system in vehicles  Charging distance: 0.05m

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Fujitsu

 Simultaneous charging to two mobile phones in Sep. 2010  Development of a simulator which is used for analysis of magnetic fields between multiple coils GSC16-PLEN-31 3

Halifax, 31 Oct – 3 Nov 2011 ICT Accessibility For All

GSC16-PLEN-31

Highlight of Current Activities

• TTA PG 709 (Wireless Charging and Application) – Established in Mar. 2011 – Scope:  Standard roadmap  Power transfer interface  Control mechanism – 12 members TTA PG709 Steering Committee WG 1 - Service & Structure -Interface WG 2 -Evaluation WG 3 4

Halifax, 31 Oct – 3 Nov 2011 ICT Accessibility For All

GSC16-PLEN-31

Strategic Direction

• Market Analysis – Strong needs − 16 billion dollars expected in 2014 (Isuppli 2010) • TTA’s plans − Use case & service scenario (4Q in 2011) − Standard    Wireless Charging protocol (1Q in 2012) Wireless Charging interface (1Q in 2012) Transfer efficiency and measurement (4Q in 2012) • Collaboration − Cooperation and the sharing of information with SDOs

Halifax, 31 Oct – 3 Nov 2011 ICT Accessibility For All

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GSC16-PLEN-31

Overview of Wireless Charging System

• Wireless Charging System – How to transfer power and charge efficiently – Devices which have a battery • Wireless Power Transfer System – How to transfer power efficiently – All electric devices • Difference from cable chargers – Elimination of complicated wire cables – Safety from electric shock – Increased mobility – Relatively low efficiency (about 90% efficiency of cable chargers) • Considered frequency bands – 20~60 kHz – 80~370 kHz – 6.78, 13.56 MHz 6

Halifax, 31 Oct – 3 Nov 2011 ICT Accessibility For All

GSC16-PLEN-31

Challenges

• Product Diversification – As market is increasing, each vendor makes the Wireless Charging system which has different structure & protocol – Wireless Charging is possible only between systems having the same structure & protocol • Frequency Issues – Each vendor considers different frequency bands for Wireless Charging which disables interoperability between Wireless Charging systems • Regulation Issues – Each nation has different regulation for EMI/EMC, SAR, etc.

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Halifax, 31 Oct – 3 Nov 2011 ICT Accessibility For All

Next Steps / Actions

• Standardization Activities for product diversification – System & interface – Control & management protocol – Conformance test & certification GSC16-PLEN-31 • Regulation Coordination & Compromise – Frequency band – EMI/EMC – SAR • Activities toward the global harmonization – Cooperation with other SDOs – Investigation of the similar activities and directions in other organizations

Halifax, 31 Oct – 3 Nov 2011 ICT Accessibility For All

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