无线充电的下一步是什么？

2018-10-31 09:03:17

1959 安森美无线充电

无线电力传输的想法具有非常现代的近乎未来感，但它的起源可以追溯到130年代的“电流战争”，这是托马斯爱迪生和乔治·威斯汀豪斯在19世纪80年代后期之间的电力分配战。
然而，真正助长大火的人是塞尔维亚裔美国工程师和物理学家尼古拉·特斯拉（Nikola Tesla，1856-1943），他在电力的生产，传输和应用方面取得了数十项突破。
特斯拉以其对现代交流（AC）供电系统设计的贡献而闻名。
作为一名1875年的学生，特斯拉曾就读于奥地利格拉茨的奥地利理工学院。
十年后，特斯拉移民美国，前往爱迪生工作，完成了重新设计爱迪生公司直流（DC）发电机的任务。
他在几个月内完成了这项任务，但当爱迪生违背他的付款承诺时，Telsa辞职并很快找到了爱迪生的竞争对手Westinghouse。
特斯拉开发的一种产品是一种采用交流电的感应电机，这种电源系统由于其在长距离高压传输方面的优势而日益受到欢迎。
这对于西屋公司来说非常完美，西屋公司多年来一直试图为可行的交流电机获得专利。
随着西屋公司现在许可感应电动机已经在沙滩上画了一条线，特斯拉现在坚定地站在他的前雇主爱迪生的“战争之战”的另一边。
最初是竞争对手的照明系统之间的友好竞争，发展成为一场全面的冲突，其奖项旨在照亮1983年的世界哥伦比亚博览会。
随着“军备竞赛”的增长，成本逐渐失控，专利和工程师被大量消费。
这场战斗最终导致爱迪生控制了自己的公司，该公司被并入通用电气集团。
最终，乔治·威斯汀豪斯赢得了在芝加哥亮相1893年世界哥伦比亚博览会的竞标，其中一个明星景点是“特斯拉多相系统”，特斯拉自己通过使用高压，高频交流电流让惊人的人群眼花缭乱。
无线点亮房间另一侧的灯。
可悲的是，尽管已经出售了他的AC电力专利，特斯拉死于贫困和债务。
他的好朋友作家马克吐温称特斯拉的感应电机发明是“自电话以来最有价值的专利”。
一个多世纪后，无线充电技术的主导地位的斗争仍在继续，并开始了新的电流战争。
如果要大规模采用远程充电，则设备需要具有互操作性，这意味着建立行业标准。
到目前为止，已出现三种消费者标准
第一款是Qi，功率高达5瓦，结合了共振和感应技术，非常适合为手机充电。
Qi的主要竞争对手采用Power Matters Alliance（PMA）的形式，该联盟最近与无线电力联盟（A4WP）创建的第三个标准合并，允许更高的功率水平。
传统上，PMA在快餐市场上发挥着重要作用，在星巴克和麦当劳的分支机构中迅速扩张。
然而，A4WP标准很快就会成为主导力量，因为它看到了平板电脑和笔记本电脑制造商的显着采用率。
安森美半导体于2013年加入A4WP，从那时起，我们一直积极参与标准以及举办A4WP活动。
要了解更多信息，请查看安森美半导体的网络广播，其中概述了无线充电市场，包括过去，当前和未来的技术趋势，并讨论了市场标准。

以上来自于谷歌翻译

以下为原文

The idea of wireless power-transmission has a very modern almost futuristic feel to it but its origins date back over 130 years to the "War of Currents," which was an electrical distribution battle waged between Thomas Edison and George Westinghouse in the late 1880s.
However the person who really fueled the conflagration was the Serbian-American engineer and physicist Nikola Tesla (1856-1943) who made his name with dozens of breakthroughs in the production, transmission and application of electric power. Tesla is best known for his contributions to the design of the modern alternating current (AC) electricity supply system.
As a student in 1875, Tesla attended the Austrian Polytechnic in Graz, Austria. Ten years later, having immigrated to the USA, Tesla went to work for Edison and undertook the task of completely redesigning the Edison Company's direct current (DC) generators. He completed the task within months but when Edison reneged on his payment commitments Telsa resigned and quickly found employment with Edison’s great rival Westinghouse.
One of the things Tesla developed was an induction motor that ran on alternating current, a power system format that was becoming popular due to its advantages in long distance high voltage transmission. This was perfect for Westinghouse who had been trying to secure patents for a viable AC motor for years. With Westinghouse now licensing the induction motor a line had been drawn in the sand with Tesla now firmly on the opposite side of the "War of Currents”, from his former employer Edison.
What started out as a friendly competition between rival lighting systems developed into a full scale conflict whose prize was to light the 1983 World Columbian Exposition. As the ‘ARMs race’ grew, costs spiraled out of control with patents and engineers being consumed in huge quantities. The battle eventually cost Edison control of his own company which was merged into the conglomerate General Electric.
Ultimately it was George Westinghouse who won the bid to light the 1893 World's Columbian Exposition in Chicago and one of the star attractions was the "Tesla Polyphase System" where Tesla himself dazzled the astonished crowds by using high-voltage, high-frequency alternating current to wirelessly light a lamp on the opposite side of the room.
Sadly, despite having sold his AC electricity patents, Tesla died impoverished and in debt. His close friend the writer Mark Twain described Tesla's induction motor invention as "the most valuable patent since the telephone’.
Over a century later the battle for dominance in wireless charging technology continues and a new war of currents has started. If remote charging is to be adopted on a grand scale then the devices will need to be interoperable and that means establishing industry standards.
So far three consumer standards have emerged. The first is Qi which operates up to five watts, combines resonance and induction techologies and is perfect for charging mobile phones. Qi’s main competitor takes the form of Power Matters Alliance (PMA) who recently merged with the third standard created by the Alliance for Wireless Power (A4WP) which allows for higher power levels. PMA has traditionally played heavily in the fast-food market with a rapidly expanding presence in branches of Starbucks and McDonalds. However the A4WP standard could soon emerge as the dominant force since it is seeing a significant adoption rate by tablet and laptop computer manufacturers.
ON Semiconductor joined the A4WP in 2013 and since then, we have been active in contributing to the standard as well as in hosting A4WP events.
To learn more, view an ON Semiconductor webcast that provides an overview of the wireless charging market, including past, current and future technology trends, and discusses the market standards.