Shulou(Shulou.com)11/24 Report--

CTOnews.com July 26 news, According to Nikkei Chinese net report, Japan Tokyo University of Technology is studying the use of laser power "Optical wireless power supply," By irradiating laser light at the object, Light energy into electrical energy. In addition to wireless use of communication devices and home appliances, the technology is also conducive to the development of pure electric vehicles that can run without charging. The research team hopes that with the help of related technologies, it will be possible to achieve a life without caring about charging by 2050.

▲ The basic principle of Pexels 'scheme is very simple, that is, converting electric energy into laser and then irradiating it. The party irradiated by laser uses photovoltaic panels to convert light into electric energy for utilization. Professor Miyamoto Zhizhi of Tokyo University of Technology said: "If the problem of efficiency and safety can be solved, perhaps the technology can be put into practical use as soon as possible." "

Miyamoto's team has achieved about 10 watts of power transmission through the scheme, successfully operating wireless control devices and keeping drones airborne by firing lasers from the ground. In addition, the ability of lasers to penetrate water is another feature of optical wireless power, so it can provide wireless power to unmanned equipment moving underwater.

At present, electromagnetic induction has been popularized in wireless power supply, which transmits power by using magnetic force generated by energizing coils. This method has been applied to scenarios such as smart phone charging. Although this method can transmit electricity at an efficiency of about 90%, it can only maintain a distance of about a few centimeters between the power supply and the power receiving equipment.

considered a strong candidate for long-distance transmission is microwave based wireless power. This method uses radio waves with specific wavelengths to transmit power. Although it can transmit power over a large range and a long distance, once the distance is extended, the efficiency will drop by several percentage points, making it difficult to transmit a large amount of power. In addition, due to the use of radio waves, the equipment receiving the radio waves may cause interference and may cause malfunctions.

CTOnews.com learned from the report that laser has the advantage of long-distance power supply, and its conversion efficiency is considered to be maintained at about 50%, so it is expected as a wireless power supply mechanism for long-distance transmission of large current. However, there are problems to be solved in this solution, especially in terms of safety. High-power laser irradiation is very dangerous if it is irradiated to people, and it is necessary to use it in an unmanned environment, and it is necessary to strictly control the irradiation place.

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