25-08-2017, 09:32 PM
Wireless Charging System
Wireless Charging.ppt (Size: 1.55 MB / Downloads: 61)
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
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
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.
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