What is Qi Wireless Charging


QI WIRELESS CHARGING


QI (pronounced as CHI) has defined today's wireless charging technology. It has been developed by Wireless Power Consortium. It has given standards for wireless charging using Resonance Inductive Coupling for distance of upto 5 centimetres between the two coils. Although, there are many types of wireless transfer of electric current, the most safest method is resonance inductive coupling or magnetic inductive coupling.



According QI standards, both the coils interact with each other for safe transfer. Initially, it is applicable for only transfer below 5 watt only. Eventually, however ,it released standards for transfers more than 5 watt also.
The given table includes the info.
Qi Versions
Version number
Released
Maximum Wattage
Notes
1.0
2010
5 W
1.1
2012
5 W
1.2
2015
Baseline Power Profile (BPP): 5W
Extended Power Profile (EPP): 15 W
Labeled by Samsung as “Fast Wireless Charging” (initially 10W, introduced on the SAMSUNG GALAXY S5 and S6 EDGE PLUS), August 2015) requires charging plate to be connected to Qualcomm Quick charge 2.0-enabled 15W USB charger (9 Volt, 1.67 Ampère support).
1.2.4
2017
MORE POWERFUL


Additionally, Qi charging was first introduced with Nokia Lumia 920 and Samsung Galaxy S3 . The following year Google Nexus 4 also included Qi wireless charging. Finally, IKEA also started manufacturing furniture which supports Qi wireless charging.


Lastly, Qi is currently working on wireless transfer on a bigger scale. It is working on wireless charging for electric vehicles, Robotic vacuum cleaners and Drones. Today, almost all flagships have Qi wireless charging included. For example: almost all iPhones, Samsung Galaxy S-series and Note-series and Google Pixel devices etc.

STAY TUNED FOR MORE UPDATES.

PEACE!

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