SAE International一支致力于電動(dòng)汽車(chē)無(wú)線充電標(biāo)準(zhǔn)志愿標(biāo)準(zhǔn)工作組，近日就在無(wú)線充電的電源頻率（85kHz）及電平方面達(dá)成一致。
“工作組通過(guò)三年的國(guó)際協(xié)調(diào)與調(diào)查，一致達(dá)成了輕型車(chē)輛額定通用工作頻率指導(dǎo)方針，運(yùn)用相同的工作頻率對(duì)于無(wú)線供電來(lái)說(shuō)是至關(guān)重要的。” 輕型車(chē)、電動(dòng)車(chē)以及插電式車(chē)輛J2954無(wú)線充電（WPT）工作小組主席Jesse Schneider如是說(shuō)。（Jesse Schneider同時(shí)也是寶馬公司北美分部燃料電池、電動(dòng)汽車(chē)、氫與標(biāo)準(zhǔn)開(kāi)發(fā)經(jīng)理）
由OEM、無(wú)線充電供應(yīng)商、行業(yè)專(zhuān)家以及政府代表組成的工作組，同時(shí)還確定了電力傳輸能級(jí)：第一級(jí)為WPT1，最大傳輸能級(jí)為3.7 kW；WPT2則為7.7kW；WPT3是22 kW。
Schneider透露，工作小組計(jì)劃于2014年初完成以上內(nèi)容和無(wú)線汽車(chē)充電其他相關(guān)方面（例如：線圈的結(jié)構(gòu)與調(diào)整）的技術(shù)信息報(bào)告（TIR），報(bào)告完成后的一兩年內(nèi)還會(huì)公布新版J2954標(biāo)準(zhǔn)。 更多相關(guān)信息，或有意加入相關(guān)工作組，敬請(qǐng)聯(lián)系SAE的 Pat Ebejer at pebejer@sae.org （僅限英文郵件）。
An SAE International volunteer task force working on a standard for wireless charging of electric vehicles has agreed on the frequency (85 kHz) and the power levels that should be used.
“After three years of international collaboration and investigation within the team, consensus has been reached on a nominal common frequency of operation for the light-duty vehicle guideline,” said Jesse Schneider, Chair of the J2954 Task Force for Wireless Power Transfer (WPT) of Light Duty, Electric, and Plug-in Vehicles. “A common frequency of operation for WPT is essential.” Made up of OEMs, WPT suppliers, industry experts, and government representatives, the task force also nailed down the power transfer levels: the first one is identified as WPT1 and has a maximum transfer level of 3.7 kW; for WPT2 it is 7.7kW; and for WPT3 it is 22 kW. The task force plans to complete by early 2014 a Technical Information Report (TIR) on these and other “interoperability” aspects of wireless vehicle charging (e.g., coil geometries and alignment), according to Schneider, who serves as Fuel Cell, EV, Hydrogen and Standards Development Manager at BMW of North America. He said the TIR will be followed by publication of an updated J2954 standard within a year or two. For more information, or to join the task force, contact SAE’s Pat Ebejer at pebejer@sae.org.
