wireless energy transfer

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wireless energy transfer

The transfer of power to a device without wires. Although the wireless transfer of electromagnetic energy in the form of audio, video and data signals is ubiquitous, the wireless transfer of electrical power is relatively new.

Inductive Charging
Some devices already employ wireless energy transfer without the use of metal contacts. Known as "inductive charging," power is transferred through the plastic cases using magnetic induction; however, the device must be dropped into a charging base or placed on a charging mat. See Qi and AirFuel.

Resonance Charging
Magnetic resonance chargers charge batteries in low-power devices that are close but do not have to touch. As soon as a device is within range, data signals activate the charging. The farther the distance between device and charger, the longer the charging time. See AirFuel.

The Future
By using magnetic fields, some time in the future, electric vehicles are expected to be refueled within three feet of the charging station.

No Metal Contacts
With inductive transfer, power is transferred without a metal plug and socket. The toothbrush is dropped into its charging base, and the smartphone rests on its base (see Palm Pre).


No Metal Contacts
With inductive transfer, power is transferred without a metal plug and socket. The toothbrush is dropped into its charging base, and the smartphone rests on its base (see Palm Pre).


Wireless Power in the Car
In 2013, iOttie debuted the Easy Flex system for certain smartphones. The dashboard mount (top) is wired to the car's power, and an antenna coil (bottom) is lined up with the phone's internal battery terminals.
References in periodicals archive ?
According to him, If inductive charging coils were embedded in streets, electric vehicles also could be recharged when stopped at traffic lights or even while being driven.
The cooperation between Vahle and HELLA combines the expertise and experience of both companies in the field inductive charging.
The inductive charging system is expected to be equipped as a standard features on 'plug-in' Audi vehicles.
SAE has already set up a taskforce working towards the standardization of inductive charging.
Today's early wireless charging systems mostly use inductive charging technologies that require direct contact between the charger and the device, but research is well underway on systems that will eventually transmit power wirelessly over long distances.
In Braunschweig, the world's first inductive charging system is coming into use.
Inductive charging will also be popular, but is likely to be adopted only post- 2014.
Auto Business News-December 8, 2011--Daimler AG tests inductive charging on real car(C)1994-2011 ENPublishing - http://www.
From simple inductive charging mechanisms that require a direct point of contact between charger (transmitter) and device (receiver), wireless power systems have evolved to the point of promising the ability to transmit dozens of watts over dozens of kilometers.
Bombardier Transportation has introduced the maiden high power inductive charging station for PRIMOVE electric buses jointly with the local transport operator Braunschweiger Verkehrs-AG, at a world premiere in Braunschweig, Germany.
The collaboration is aimed at launching inductive charging tests with a Mercedes-Benz B-Class E-Cell Plus.
The manufacturers demonstrated wireless charging with both Philips Qi phones and an Apple iPhone 3 enabled by an Energizer Inductive Charging Sleeve.