WiTricity wireless charging system image
Japanese automaker Toyota has entered into a technological collaboration agreement with Boston, MA-based WiTricity Corporation. The agreement centers on the practical application of automotive wireless charging systems for plug-in vehicles and promotion of their widespread use. Additionally, Toyota will assist WiTricity in raising capital.

WiTricity's wireless technology uses resonance, which allows charging without direct contact and is claimed to be more efficient than electromagnetic-induction, another type of wireless charging technology. The power transfer efficiency of a WiTricity wireless system depends on the size of the power source and capture devices and on the distance between those two units. Maximum efficiency is claimed to be around 95 percent. Toyota believes that resonance wireless charging is suitable for automobiles and hopes that its work with WiTricity will lead to widespread adoption of this so-called cutting-edge technology. It's not the only company to think that. Back in November of 2010, global automotive supplier, Delphi, established a similar collaborative agreement with WiTricity.

[Source: Toyota]
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TMC and WiTricity Form Wireless Battery-charging Alliance

Toyota City, Japan, April 27, 2011-Toyota Motor Corporation (TMC) has entered into a technological collaboration agreement with Massachusetts, United States based WiTricity Corporation* concerning the practical application of automotive wireless charging systems and the promotion of their widespread use. TMC plans to participate in a WiTricity capital increase.

WiTricity's charging technology uses resonance, which allows charging without direct contact and is more efficient than electromagnetic-induction, another wireless technology-but one that requires contact-that is starting to come of age in mobile phone and other chargers. TMC believes that resonance wireless charging is suitable for automobiles and aims for its early practical use.

The collaboration is aimed to accelerate development and eventual implementation of wireless charging for automobiles. The charging of a plug-in hybrid or electric vehicle could be as simple and convenient as parking near an embedded charger at a home or in a parking facility.

In the Toyota Global Vision announced in March, TMC expressed its commitment to leading the way to the future of mobility by integrating automobiles, homes and information technology. Wireless charging is just one of the many technologies TMC seeks to develop for the future.