无线充电设备翻译

安徽建筑大学

毕业设计 (翻译)

专业电子信息工程

班级09城建电子②班

姓名马吉智

学号 09290060216

课题无线充电器的设计与制作

————无线充电发射部分

指导教师花海安

2013年06月

Wireless charging technology overview and outlook One, the history of wireless charging technology actually idea of wireless power supply have emerged as early as one hundred years ago, in 1890, nikola tesla, the founder of the modern alternating current (ac) system began to idea of wireless power supply method, and finally put forward a very ambitious plan - the earth as the inner conductor; Between the earth and the ionosphere established about 8 hz low frequency resonance, recycled around the earth's surface electromagnetic wave to transmit power at a distance. At the time, tesla is a series of experiments are carried out using coil, created the wireless power transmission. In 1990, and tesla began his research, and try to make electricity like broadcast across oceans, afterwards because of huge investment, the technology of "death". Although tesla research ultimately no results, but his original wireless power technology idea is bold enough.

Second, the development of wireless charging technology tesla coil at the time didn't get, but in the mid - 1920 - s, Japanese H.Y agi and S.U da theoretically confirmed this solution is a completely different from special power supply way of cable transmission, the wireless power supply technology, photoelectric coupling, electromagnetic coupling main magnetic resonance, etc. Three different ways.

A power supply, the current wireless power supply technology, photoelectric coupling, electromagnetic coupling main magnetic resonance, etc. Three different ways. 1, electromagnetic coupling, electromagnetic coupling for power engineers, in the familiar, the transformer is to use this principle to transfer energy. If separate two winding transformer, is something of a wireless power supply. Rechargeable electric toothbrush is a typical case, but the use of electromagnetic coupling way has a lot of disadvantages, not high magnetic permeability of magnetic core as a medium, the lines of magnetic force can lead to serious spread into the air, resulting in a decline in transferring efficiency, especially when two coil from down badly. So this way is only

suitable for small power, close communication, for high-power, long-distance wireless power supply is not so good this way. 2, photoelectric coupling photoelectric coupling is to convert electrical energy to light energy, such as laser, energy transfer to the destination by light into electricity. The wireless power supply technology is more intuitive, photoelectric coupling also can well restrain interference, and the application of the photoelectric conversion technology is relatively wide. The unidirectional, but made by light transmission determines its transfer path has certain defects, there can be no obstacles in the transfer path. So this kind of technology, also has the corresponding defects. 3 people on magnetic resonance and magnetic resonance coupling has a noun is unknown, its principle is similar to the principle of sonic resonance, if the two media have the same resonance frequency, can be used to transfer energy. Magnetic resonance chamber are currently studying a way of power transmission. In 2008, Intel engineers had to the technology as the foundation, in according to the power three feet lit a 60 w light bulb.

In September 2010, Fujitsu, wireless charging technology using magnetic resonance between the charger and the device of the air transport charge, the coil and capacitor in resonance between the charger and the device. Fujitsu said the system can be widely used in the future, such as for electric car charging area and the power chip, power transmission, adopting the technology of the charging system the required charging time is only about one over one hundred and fifty of the current. At present, Japan plans to set the charging points in 2012.

Also developed by Fulton eCoupled technology originated in the 19th century Faraday discovered electromagnetic induction principle, when the current through the coil generates magnetic field, the corresponding equipment will be affected by magnetic field creates an electric current, electric transmission is completed in "wireless" way, and eCoupled technology can also be from of different functions of the same electrical appliances, and the corresponding power adapter. Initially, Fulton will develop eCoupled technology used in parent company amway water purifier, water purifier for bulb wireless power supply. According to the Protable Design, 10th, 2010, is expected in 2013, the potential markets in the world of wireless charging equipment capacity is close to $14 billion, to 2014, wireless charging equipment