Portable Wireless Charger With Power Bank
Online, July 25, 2012 (Newswire.com) - This portable power bank can charge all Qi compatible phones. This video is a demonstration of 8000ma portable power bank wirelessly charging the MEDIAS Japan phone which has build-in Qi. The advantage of this product is that you can bring it outdoor and it can charge any current and future Qi compatible product. There is an USB output port for wire charging too.
WIRELESS IS BEAUTIFUL
We love the freedom to stay and go wherever we like. Linked but not tied. Connected without wires.
CONNECTORS AND CABLES ARE UGLY
Let's get rid of the last wire. Why do we still need to plug the power cable in our phones and headsets?
CONNECTORS AND CABLES ARE UNNECESSARY
Electric power can be transported without wires or connectors. Power transfer over short distances is surprisingly simple.
WIRELESS BATTERY CHARGING IS POPULAR
Short distance power transmission is used in many products. Toothbrushes, LED candles, remote controls, medical equipment and phones. It is reliable and convenient.
INCOMPATIBILITY
We all love wireless products but hesitate to stuff our desks and homes with incompatible charging stations. We demand that our charging station will work with products from many companies, and will work with next year's models as well.
INTEROPERABILITY IS GOOD
The Wireless Power Consortium sets the international standard for interoperable wireless charging. Interoperable products can be recognized by the logo "Qi". Phones, cameras, remote controls, and all mobile electronics carrying the logo will work with all charging stations that carry the logo. Simple and obvious.
Qi Technology
The name "Qi" comes from the "qi" concept of energy flow from Chinese medicine, and is pronounced "chee." Qi works by generating an electromagnetic field between a charger and a device through magnetic induction. Qi chargers have a built-in transmitting coil that communicates with Qi devices using a specific electromagnetic frequency, so any Qi device will work with any Qi charger.
Under the Qi specification, "low power" for wireless transfer means a draw of 0 to 5 W. Systems that fall within the scope of this standard are those that use inductive coupling between two planar coils to transfer power from the power transmitter to the power receiver. The distance between the two coils is typically 5 mm. Regulation of the output voltage is provided by a digital control loop where the power receiver communicates with the power transmitter and requests more or less power. Communication is unidirectional from the power receiver to the power transmitter via backscatter modulation. In backscatter modulation, the power-receiver coil is loaded, changing the current draw at the power transmitter. These current changes are monitored and demodulated into the information required for the two devices to work together.