Qi wireless charging

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Qi wireless charging

Pronounced "chee" from Chinese, meaning "life force," Qi is a wireless charging method from the Wireless Power Consortium (www.wirelesspowerconsortium.com). Introduced in 2009, Qi is based on "closely coupled" electromagnetic induction that requires the device to be aligned on top of the coil on the charging pad. Hundreds of devices are Qi certified, including Google Nexus and Samsung phones, and loosely coupled versions of Qi are expected in the future. See wireless charging.

Medium and Loosely Coupled
Under development at the Wireless Power Consortium (WPC) are a "medium-coupled" version of Qi that operates at a distance of up to approximately 15mm and a loosely-coupled version (Qi 3D) that can be up to 50mm. Typical applications are in vehicles and for mounting under table and desktop surfaces. Loosely coupled products not certified by the WPC have also been announced.

Qi Charging
Dropping this Galaxy S7 Edge onto the Belkin wireless charger causes power to be transferred. A small amount of positioning is required to align the coils.

Three Qi Coils
Inside this TYLT charger are three coils that charge the phone by electromagnetic induction.

Samsung Fast Charge Is Also Qi
Some pads support three charging methods. Samsung Fast Charge is a higher 9-watt version of Qi. Note the stylized logo. See AirFuel.
References in periodicals archive ?
The MM1000 has a micro-textured hard surface and a dedicated Qi wireless charging spot on the top right of the mousepad.
This three coiled charging base allows users to have a larger charging platform when it comes to Qi wireless charging.
The range includes the Belkin Qi Wireless Charging Pad allowing customers to charge any Qi enabled device for just 29.
The bag uses Qi wireless charging standard, which is the same technology in Nokia's new Lumia 820 and 920.
Back in September 2017, Xiaomi officially joined the Wireless Power Consortium (WPC), which is a worldwide technology consortium that's trying to promote wider adoption of the Qi wireless charging standard.
The Moto X Force also supports PMA and Qi wireless charging.
For the uninitiated, the WPC was first formed back in 2008 with the goal of promoting the adoption of the Qi wireless charging standard.
Both the devices may feature 20MP PureView cameras, USB Type-C ports, and Qi wireless charging.
Apple's newly announced devices come with glass backs and have Qi wireless charging technology.
An infrared iris scanner and the USB Type-C port are expected to feature as well, along with Qi wireless charging support.