The Sumitomo tire uses static electricity to generate energy

Manufacturer Sumitomo has developed a tire concept that includes a box for collecting and converting static electricity into powering car equipment.

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Find a path to transformation movements wheels of a car energy is a problem to which Good year tied up a few years ago. At that time, the American manufacturer had been working on thermoelectric components and piezoelectric what would transform it warmth and conversion to electricity to charge the batteries of a electric car From where hybrid. Sumitomo has a pretty similar goal, but with a different method.

The tire manufacturer affiliated with the University of Kansai in Japan tries to use the static electricity caused by a friction caused by the deformation of the shell of the tires To move. that device comes in the form of a box that inserts into a standard tire. The device contains two layers of rubber each covered with a electrode, and a negatively charged film in contact with a positively charged film. If the tires Rolling it causes friction between the films, which in turn creates static electricity that can be collected.

For powering pressure sensors and other vehicle equipment

According to the researchers behind this project, the system could deliver the particular pressure sensor out of tires and why not other electrical devices of a car that consume little energy. No data is given on the ability of this case to charge itself through friction, but given its size, one can imagine that the amount of energy generated need not be enormous.

But maybe it would be possible to install several such devices in one tire and connect them in series?!

A tire to charge the battery of your electric car?

Article by Marc Zaffagni09/03/2015

The North American manufacturer Goodyear has presented a concept tire automobile Combining thermoelectric and piezoelectric components that would convert heat and motion into electricity. Which might entail an energy supplement to prolong thatautonomy electric vehicles.

A few months ago we mentioned the work being done in the United States by researchers from theOak Ridge National Laboratory of the Department of Energy. The team managed to extract black carbon from used tires and then uses them to make thoseanode of a lithium ion battery. In a radically opposite approach Good year is currently working on a tire that can generate electricity to charge the batteries of an electric or hybrid car. During the Geneva Motor Show that started last week, the manufacturer presented what is still only referred to as a concept BH03.

This tire would combine thermoelectric and piezoelectric components. For the former it would be a texture from so-called rubber “ultra black” able to absorb the heat generated when the vehicle is parked and the tire is heated as a result Sun. Piezoelectric devices are braids built into the carcass that would respond to tire rolling and deformation. Goodyear does not give specific data on the performance of the BH03, but only points out that it could extend the range of an electric car. Energy recovery remains one of the crucial research areas for manufacturers. This Goodyear tire therefore seems like an attractive idea, at least on paper.

A special rim for energy recovery

However, many technical questions remain unanswered, especially regarding the conversion system and the power supply of the battery. The concept envisages that the tire should be assigned to a specific rim that can establish the connection to the energy recovery module. It is also unclear whether electricity production would be correlated with this speed of the vehicle. Additionally, Goodyear does not specify a date for the arrival of such a product.

This project is reminiscent of another equally ambitious project the German brand is working on Audi. The R&D department is investigating the possibility of using car shock absorbers to generate electricity. As a kinetic energy recovery system (SREC) is intended to absorb the heat generated when the suspension is heated up, which according to Audi can be between 100 and 125 °C. Audi is said to have developed a shock absorber that a generator synchronized with the mechanical movement of the part. But here, too, the manufacturer does not name a concrete roadmap.

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