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Wireless Charging System

Wireless Charging System. Seung -ok Lim TTA. Wireless Charging System. Transfer electric power to mobile nearby devices (less than several meters) and charge batteries. Technical Trends. Highlight of Current Activities. TTA PG 709 (Wireless Charging and Application)

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Wireless Charging System

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  1. Wireless Charging System Seung-ok Lim TTA

  2. Wireless Charging System • Transfer electric power to mobile nearby devices (less than several meters) and charge batteries

  3. Technical Trends

  4. 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 WG 1 WG 2 WG 3 TTA PG709 Steering Committee • Service & Structure • Evaluation • Interface

  5. 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

  6. 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

  7. 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.

  8. Next Steps / Actions • Standardization Activities for product diversification • System & interface • Control & management protocol • Conformance test & certification • 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

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