The problem of wireless power supply technology, what is the principle of wireless power supply tech

1. The principle is to use a non-radiative wireless energy transmission method to drive electrical appliances.

2, refers to the non-physical contact of the power transmission mode, is the third wireless revolution after wireless communication, wireless network, is regarded by the industry as a cutting-edge technology with basic application significance, across the product application range, the bureau is expected to promote the national and even the world communications, electronics, the Internet of Things, file clearance new energy and other industries of breakthrough and innovation, by the Massachusetts Institute of Technology scientists are developing new power supply technology, the project began in June 2007.

3. The electromagnetic induction method with two coils in the wireless power supply technology and the method of transmitting the electric energy to the remote receiving antenna in the form of laser or microwave, and acting on the load after correcting the source stream and modulation.

Wireless power supply uses electromagnetic fields, i.e. disturbance electromagnetic induction. The simplest trace, which is also commonly used by us, such as radio frequency card (bus card, the card itself is passive, but it needs energy to send a signal, obtained from the card reader) is wireless power supply. Of course, RF cards use very little energy, but the principle is the same.

In fact, wireless power supply technology has been concepted many years ago, and there are many experts who hope to make some breakthroughs here, basically wireless power supply technology can use the following methods: The term electromagnetic resonance is a bit unfamiliar, and it is said that its principle is similar to the principle of acoustic resonance, two media have the same resonance frequency, which can be used to transfer energy. Witricity's technology is based on this principle.

They call it non-radiative electromagnetic resonance. Of course, this may not mean that the technology is free of radiation, but it is very different from our common concept of electromagnetic radiation.

According to a July 21 report by the American Physicists Organization Network (Beijing Shiwan Brothers), several research groups are trying to use radio waves to provide energy for low-width car energy-saving micro-burial equipment. With this technology, Duke University in the United States has developed a helmet with a beep reminder function.

Wireless power technology.

Scientists at the Massachusetts Institute of Technology (MIT) in the United States are developing a new way to power electricity, using a non-radioactive wireless way of energy transfer to power appliances, whether they are mobile phones, laptops or digital cameras, whose chargers could be retired if the research is successful.

The research began last year when Marin, then an associate professor in the physics department at the Massachusetts Institute of Technology

Soljacic's mobile phone battery was reimbursed, so he decided to unite several other faculty and graduate students to develop an easier way to power these everyday portable appliances.

The principle of this technology is actually very simple, the electromagnetic waves we are exposed to every day carry energy. Most of the energy is scattered in the air when a radio broadcast is transmitted, and this technology uses a non-radioactive field to concentrate this energy. We all know that electromagnetic waves of a particular frequency cause an object to vibrate, and two objects with the same natural frequency can transmit this vibration and thus transfer energy.

We can have an object such as a copper antenna emit electromagnetic waves, and let the receiver receive them, converting them into energy. Theoretically, all appliances that now run on batteries could be powered in this way. Of course, at this stage this transmission is limited to a short range of a few meters.

Regarding the effects of the resulting electromagnetic radiation on the human body, the researchers are conducting tests to finally meet the requirements of the FCC standard. According to the developers, the current radiation levels are roughly similar to those of an MRI machine, which should be within the safe range.

If the test goes well, this wireless power technology will have a huge room for development, such as laying lines underground, charging the ** in our hands at any time, and even the car on the move. But the researchers point out that the technology is still in its infancy, and these prospects are still in the imagination.

Wireless power supply technology is a new Qingyuanyou power supply technology developed by the scientist Zheng Dahuai of the Massachusetts Institute of Technology in the United States, the principle is to use non-radiative wireless energy transmission mode to drive electrical appliances. The project started in June 2007.

Wireless power supply refers to the transmission of electrical energy through non-physical contact, which is the third wireless revolution after wireless communication and wireless network, and is regarded by the industry as a cutting-edge technology with basic application significance, with a wide range of cross-product applications, and is expected to promote breakthroughs and innovations in communications, electronics, Internet of Things, new energy and other industries in the country and the world.