电动汽车的无线充电技术1
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发表于 2011/7/25 9:43:59
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1.感应充电(Inductive Charging)
Energy is transferred through electromagnetic coupling, not direct wire connection –close proximity。近距离的充电,非常惊讶,GM在1998年就搞出产品来了,可以配合EV1一起使用,其使用手册为:
这个东西的结构为:
感应充电缺点太多,目前在SAE的标准序列之中,处于SAE1773作为电动车感应充电的标准。
2.无线充电(Wireless Charging)
Wireless changing is different from inductive charging, and information transmission, such as radio signal。Wireless means transferring power and energy in a great distance.It is typically done through electromagnetic resonance。其实与感应充电相比,其特点就是相隔的距离大了很多,采用的原理也并不相同。
无线充电的SAE标准SAE J2954 TIR(technical information reference),有着众多的参与者,很奇怪这个工作组竟然是BMW来lead的:
有个项目介绍挺详细的,见参考文献2,项目预算为$400K,我在网上搜到一个类似的国内项目,不过我一点都不报希望,这位先生只会扯淡,但是预算估计相若。
其结构为,关于天线的照片挺清晰的
参考文献
1.《SAE TIR J2954:“Wireless Charging of Electric and Plug-in Hybrid Vehicles”》Jesse Schneider Taskforce Chair
2.《Wireless Plug-in Electric Vehicle (PEV) Charging》 John M. Miller Oak Ridge National Laboratory
3.《Safely Charging EV and PHEV from the Electricity Grid Chris》 Mi, Ph.D.