INDUCTIVE CHARGING FOR ELECTRIC CARS.( PROJECT BY VOLVO)

INDUCTIVE CHARGING FOR ELECTRIC CARS.

Volvo Car Corporation is participating in an inductive charging project with Flanders' Drive and others.

What's the agenda?


Volvo Car Corporation is developing systems and methods that need neither power sockets nor charging cables. With inductive charging, energy is transferred wirelessly to the car's battery via a charging plate buried in the road surface.

Wireless energy transfer
In inductive charging, a charging plate is buried in the ground, for instance in the driveway at home where the car is parked. The charging plate consists of a coil that generates a magnetic field. When the car is parked above the plate, energy from the plate is transferred without physical contact to the car's inductive pick-up. The energy that is transferred is alternating current. This is then converted into direct current in the car's built-in voltage converter, which in turn charges the car's battery pack.

Testing on Volvo C30:


Charging a battery pack of the size fitted to the Volvo C30 Electric, 24 kWh, is expected to take about an hour and twenty minutes, if the battery is entirely discharged. The charging system to be evaluated is dimensioned for 20 kW.

VIA:VOLVO

FURTHER READING:

Why only cars, can't we charge our mobiles wirelessly too?

A bridge that powers itself....

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PUREDUE UNIVERSITY

• Purdue, NIST working on breathalyzers for medical diagnostics

          January 21, 2011

BIOMARKERS TRAPPED

Purdue, NIST working on breathalyzers for medical diagnostics

January 21, 2011

• ·         Overcame Basic roadblock in developing breath-analysis technology.

• ·         Enhanced method of detecting “BIOMARKERS” in a person’s respiration.

• ·         The great news:

o   This approach can detect the biomarkers in theparts per billion to parts per million range.

o   A novel idea of this much caliber hasn’t been introduced in the last 30 years in this technology.

• ·         How does this technology work?

o   works by detecting changes in electrical resistance or conductance as gases pass over sensors built on top of "microhotplates," tiny heating devices on electronic chips. Detecting biomarkers provides a record of a patient's health profile, indicating the possible presence of cancer and other diseases.

o   The gases exhaled by the person has capabilities to alter the electrical resistance or conductance as they pass over the sensors.

o   Theses sensors are built on “microhotplates”( tiny heating devices on electronic chips).

§  What does this technology provide us with?

·         This technology provides us a record of a patient's health profile, indicating the possible presence of cancer and other diseases.

• ·         What’s the trick?

o   The researchers used a template made of micron-size polymer particles and coated them with far smaller metal oxide nanoparticles. Using nanoparticle-coated microparticles instead of a flat surface allows researchers to increase the porosity of the sensor films, increasing the "active sensing surface area" to improve sensitivity.

• ·         Creation of the sensor.

o   A droplet of the nanoparticle-coated polymer micro particles was deposited on each microhotplate, which are about 100 microns square and contain electrodes shaped like meshing fingers.

o   The droplet dries and then the electrodes are heated up, burning off the polymer and leaving a porous metal-oxide film, creating a sensor.

•  How powerful is the sensor?

         It's very porous and very sensitive.

•          Gases passing over the device permeate the film and change its electrical properties depending on the particular biomarkers contained in the gas.

·         Source purdue university site.

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