The battery life is not a bad thing, not to mention it. I heard that American universities have developed a technology that uses WiFi to charge digital devices. It is said that it will also support mobile phones. It is really eye-catching. Is there any more exotic charging methods in the future? The brains of the major engineers are wide open and they all show their magic.
Recently, US media reported that the University of Washington has successfully used WiFi routers as wireless charging devices. It can fully charge devices such as digital cameras within 10 meters without disturbing the data transmission, and it is expected to be used in smartphones in the future.
The project's researcher, Vamsi Talla, said that a charging sensor mounted on a hardware device is designed to receive electrical energy from a radio frequency signal (RF) and convert it to direct current for charging.
At present, this seemingly cool technology is still in the research stage and has not been applied. However, another convenient charging method has become popular, which is wireless charging.
As early as 2013, Nokia and other mobile phone brands launched their own wireless charging phones, such as Lumia 920 and Nexus 4. Recently, more and more mobile phone manufacturers have begun to push wireless charging. Samsung's latest Galaxy S6 will focus on promoting its wireless charging function, and HTC's next-generation flagship will also adopt wireless charging technology.
Take the Samsung Galaxy S6 as an example. Just connect the USB cable and plug it into the socket. When the phone is out of power or is about to be out of power, put the phone on the charger board, the charger and the phone will be connected and charged in an instant.
Wireless charging is a charging method that seems to have a large-scale application trend. In addition, many researchers have made more bold attempts.
Infrared light charging
Unlike wireless charging, at the beginning of this year, Israeli startup Wi-Charge developed an infrared charging system.
Infrared light is charged by using a laser diode in the emitter to emit infrared light, and then converting the light energy into electrical energy through a photovoltaic cell in the receiver. The Wi-Charge charging system's transmitter is mounted on the ceiling and converts energy into infrared light to cover the area of ​​about 50 square meters below, which can simultaneously charge all devices in the range.
Flower pot charging
The newly developed biocharger from Chilean engineer - "E-Kaia" can turn the plant into a small "charging station", just plug it into the plant soil, and the USB power transmission end of the flower pot can be used on the mobile phone. Wait for the device to charge.
Since plants convert light energy into chemical energy during photosynthesis, they produce organic matter. Microorganisms around the plant roots decompose these organic matter and produce energy to promote plant growth. At this time, some current is released as a by-product. . The biocharger uses electrodes to capture electrons and then transfer them to the powered device in the form of electrical current.
Insole charging
Last year, a graduate of Carnegie Mellon University developed a "power insole" that used the energy generated by people to walk while charging a mobile phone. The power insole is connected to a battery pack external to the shoe, which converts the kinetic energy generated by the walking through a built-in mechanism and drives a micro-generator to generate electrical energy. The insole also includes a USB port to charge a variety of electronic devices.
Skateboard charging
Last year, a skateboard designed by a college student in Rotterdam, the Netherlands, was able to charge the phone. The generator on the skateboard wheel can generate 6 volts when the motor rotates. The current is converted into a box device that enters the skateboard after 5 volts. The electric energy generated by the skateboard running for one hour can completely charge a mobile phone, and the more the motion is performed, the more the motion is performed. The charging shoe stores more power, and can charge up to 8 times for the phone.
Urine charging
Perhaps more amazing than the above charging method is charging with urine. In 2013, British scientists discovered a method of charging urine. The urine is rich in nitrogen, urea, chlorine, potassium and bilirubin. It is very chemically active and is an excellent microbial fuel cell. The electricity generated is enough to fully charge a mobile phone.
At present, the University of the West of England and the international charity Oxfam have set up a "urine-powered" toilet near the bar of the University of West London Student Union. Oxfam also said that in the future, such toilets will be useful in refugee camps where there is no electricity supply. The land of Wu.
These various charging methods are not only expected to save people from a pile of charging lines, but also to maximize the full use of energy, making it possible to charge anywhere and anytime.
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