According to the British Daily Mail, people attending holiday parties outdoors no longer have to worry about their mobile phones being unable to charge. At present, Vodafone and the University of Southampton have developed a mobile phone device that can obtain body heat through denim shorts and sleeping bags. Realize mobile phone charging.
Vodafone UK and the University of Southampton have collaborated on the development of a portable charger-"shorts and sleeping bags". These charging shorts capture the physical energy generated by the wearer's movement and are used to charge mobile phones.
The picture will explain the working principle of the charging shorts, which are equipped with a foam-like ferroelectric electret smart material that contains pores. The pore surface will be permanently charged. With the movement of the human body, the pore size of the smart material in the shorts The shape will change, thereby generating electrical energy.
"Charging denim shorts and sleeping bag" uses power and thermoelectric technology to collect human energy to charge the mobile phone. The design of this subtle charger was completed by Vodafone Mobile Phone Company with the help of researchers at the University of Southampton. The shorts charger is equipped with a foam-like ferroelectric electret material. As the wearer moves, the shorts ferroelectric electret material is squeezed or deformed, thus starting to collect human kinetic energy. These foam-type materials contain many pores, and the surface of the pores can be permanently charged, showing piezoelectricity and pyroelectricity.
Piezoelectricity usually refers to the generation of electrical energy when a certain material is subjected to compression, and the current charging effect when a special material for shorts is compressed when the human body moves. As the pores in the foam material of the shorts deform, the shorts begin to charge, forming a current that charges the phone.
At the same time, the charging sleeping bag also collects human thermal energy based on the "Seebeck effect". This effect generates thermoelectricity, and certain materials can be temporarily charged when heated or cooled.
For this rechargeable sleeping bag, the thermoelectric components in the fabric material of the sleeping bag can monitor the temperature changes, and the heat of the sleeper's body will pass through the module containing a multi-layer "power blanket". This power blanket contains a polymer film and two semiconductors, which can produce electrical energy when it is heated.
Vodafone said that when people walk or dance in charging shorts in the future, they will be able to charge their phones for up to 4 hours with human body energy. At the same time, after sleeping at night, people can use the sleeping bag to charge the phone for 11 hours.
Professor Stephen Beeby of the University of Southampton said: "We are exploring two special technologies for mobile phone charging-thermoelectricity and kinetic energy harvesting, combined with special smart materials, which will perfectly achieve portable and convenient mobile phone charging , Wearing shorts during the day and sleeping in a sleeping bag at night, you can charge your mobile phone. "
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