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Recently, the British company HaloIPT announced in London that it has successfully realized the wireless charging of electric vehicles using its newly developed inductive power transmission technology. This is a technology that may change the direction of electric vehicles. It is reported that HaloIPT plans to establish a commercial-scale demonstration base for its inductive power transmission technology by 2012.
HaloIPT’s new wireless charging system embeds wireless charging pads in underground parking lots and streets, and only needs to install a power receiver pad in the car to perform wireless charging.

So far, electric vehicles such as G-Wiz, Nissan Leaf, and Mitsubishi i-MiEV have to connect the car to a street car charging station or a household plug through a wire to be able to charge. The system uses magnetic fields instead of cables to induce electricity. HaloIPT engineers said that the potential of this technology is huge, because inductive charging can also be on the street, which means that electric vehicles can be charged while parked or waiting for traffic lights. Special wireless charging pads can also be placed on various roads, which allows electric vehicles to realize mobile charging. Moreover, this flexible mobile charging technology is the most effective way to solve the travel problems faced by today’s electric vehicles, and it will greatly reduce the requirements for battery models.
HaloIPT said that this is also an effective way to deal with so-called “charge anxiety.” With the inductive power transmission system, car drivers don’t need to worry about sometimes forgetting to charge an electric car.

HaloIPT’s wireless charging pad can work under asphalt, underwater or in ice and snow, and has good resistance to parking shifts. The inductive power transmission system can also be configured to provide power for various road vehicles such as small city cars and heavy trucks and buses.
The HaloIPT company claims that their charging system supports a larger lateral sensing range, which means that the car’s power receiver pad does not need to be placed absolutely above the wireless charging pad. It is said that the system can also provide a charging distance of up to 15 inches, and even has the ability to recognize, for example, when a small object (such as a kitten) interferes with the charging process, the system can also cope.

Although the implementation of this system will be an expensive project, HaloIPT believes that highways with embedded wireless charging systems will become the development direction of electric vehicles in the future. This is possible and certain, but it is still far from being widely implemented. Nevertheless, HaloIPT’s motto-”No plugs, no fuss, just wireless”-still gives us hope that one day electric car charging will be carried out while driving.

About inductive power transmission system

The main power supply is provided by alternating current, which is used to provide voltage to a lumped ring, and the current range is 5 amperes to 125 amperes. Since the lumped coil is inductive, series or parallel capacitors must be used to reduce the working voltage and working current in the power supply circuit.

The power receiving pad coil and the main power supply coil are magnetically connected. By adjusting the operating frequency of the receiving pad coil to make it consistent with the main power coil equipped with series or parallel capacitors, power transmission can be realized. A switch controller can be used to control the power transmission.

HaloIPT is a start-up technology development company dedicated to the public and private transportation industries. The company was founded in 2010 by UniServices, a research and development commercial company headquartered in New Zealand, Trans Tasman Commercialisation Fund (TTCF), and Arup Engineering Consulting, a global design consulting agency.