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1. 发明授权

US09614395B2 Wireless charging system and foreign metal object detection method for the system 有权
公开(公告)号：US09614395B2
公开(公告)日：2017-04-04
申请号：US14586248
申请日：2014-12-30
申请人： AUTOMOTIVE RESEARCH & TESTING CENTER
发明人： Chao-Wen Chiang , Yu-Chuan Wang
IPC分类号： H02J7/00 , H02J7/02 , G01V3/12 , G01R25/00 , H02J50/10 , H02J50/60 , G01V3/08
CPC分类号： H02J7/025 , G01R25/005 , G01V3/088 , G01V3/12 , H02J50/10 , H02J50/60
摘要： A wireless charging system includes a wireless charging device and a power-consuming device installed in a charging area. The wireless charging device has a signal conversion module connected to a controller, a transmitter antenna and a power input terminal. The power-consuming device has a receiver coil connected to a rectifier and outputting generated power through a power output terminal. Before or when the wireless charging device charges the power-consuming device, the controller of the wireless charging device can detect a power consumption status, voltage and current information and phase difference information of the transmitter antenna to instantly determine if any foreign metal object enters the charging area, thereby preventing high temperature generated by the foreign metal object from causing equipment damage and danger and enhancing wireless charging safety.

2. 发明授权

US09419469B2 High efficiency wireless charging system and its control method 有权
标题翻译：高效无线充电系统及其控制方法
公开(公告)号：US09419469B2
公开(公告)日：2016-08-16
申请号：US14138357
申请日：2013-12-23
申请人： AUTOMOTIVE RESEARCH & TESTING CENTER
发明人： Chao-Wen Chiang , Chou-Yu Hsieh
IPC分类号： H02J7/00 , H02J7/02
CPC分类号： H02J50/12 , H02J7/0052 , H02J7/007 , H02J7/025 , H02J50/10 , H02J50/80
摘要： A control method for a wireless charging system has steps of performing impedance matching on an antenna of the wireless charging system; tracing an optimal frequency point by sending a sensing signal with a default transmission frequency, and calculating a transmission efficiency of the sensing signal; determining whether the transmission efficiency meets a transmission requirement. When the transmission efficiency does not meet the transmission requirement, repeats the previous steps with another default transmission frequency until the transmission efficiency meeting the transmission requirement. When the transmission efficiency meeting the transmission requirement, the default transmission frequency is defined as the optimal frequency point for charging. Setting the optimal frequency point as an operating frequency of the wireless charging system for charging The optimal frequency point defined by the above steps can maintain high efficiency of the wireless charging system against the variable transmitting distances.
摘要翻译：无线充电系统的控制方法具有在无线充电系统的天线上进行阻抗匹配的步骤; 通过发送具有默认传输频率的感测信号来跟踪最佳频率点，并计算感测信号的传输效率; 确定传输效率是否满足传输要求。当传输效率不满足传输要求时，用另一个默认传输频率重复上述步骤，直到传输效率满足传输要求。当传输效率满足传输要求时，默认传输频率被定义为充电的最佳频率点。将最佳频率点设置为无线充电系统的充电工作频率由上述步骤定义的最佳频率点可以保持无线充电系统对可变发射距离的高效率。

3. 发明授权

US09142348B2 Antenna with a concentrated magnetic field 有权
标题翻译：具有集中磁场的天线
公开(公告)号：US09142348B2
公开(公告)日：2015-09-22
申请号：US13722443
申请日：2012-12-20
申请人： AUTOMOTIVE RESEARCH & TESTING CENTER
发明人： Chao-Wen Chiang
IPC分类号： H01F38/14 , B60L11/18 , H02J17/00 , H01F27/42
CPC分类号： H01F38/14 , B60L11/182 , B60L11/1831 , B60L11/1833 , H02J5/005 , H02J7/025 , H02J17/00 , H02J50/10 , H02J50/70 , Y02T10/7005 , Y02T10/7072 , Y02T90/12 , Y02T90/121 , Y02T90/122 , Y02T90/125 , Y02T90/14
摘要： An antenna with a concentrated magnetic field has a main coil and at least one pair of auxiliary coils. Each of the main coil and each auxiliary coil has at least one coil conductor. Each one of the at least one coil conductor has a virtual reference plane. The at least one pair of auxiliary coils are mounted around the main coil and an included angle is formed between the virtual reference plane of each coil conductor of each auxiliary coil and that of each coil conductor of the main coil. Lines of magnetic field generated by each coil conductor of each auxiliary coil concentrate the lines of magnetic field of the main coil to orient to a corresponding virtual reference plane of the main coil, thereby solving the magnetic leakage and EMI easily occurring outside the zone of active transmission for conventional coils using electromagnetic induction.
摘要翻译：具有集中磁场的天线具有主线圈和至少一对辅助线圈。主线圈和每个辅助线圈中的每一个具有至少一个线圈导体。所述至少一个线圈导体中的每一个具有虚拟参考平面。至少一对辅助线圈安装在主线圈周围，并且在每个辅助线圈的每个线圈导体的虚拟参考平面和主线圈的每个线圈导体的虚拟参考平面之间形成夹角。每个辅助线圈的每个线圈导体产生的磁场线将主线圈的磁场线集中到主线圈的对应的虚拟参考平面，从而解决容易在有源的区域之外发生的磁泄漏和EMI 传输线圈使用电磁感应。

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