一种智能高效的无线充电系统

发布时间：2018-04-27 01:13

本文选题：无线充电 + 智能化　；参考：《东华大学》2017年硕士论文

【摘要】：迄今为止,无线充电领域已形成了3种技术标准,分别是WPC(Wireless Power Consortium)联盟的Qi标准、Duracell Powermat公司主导PMA标准以及美国高通和韩国三星公司主导的A4WP标准。前两者均采用电磁感应技术但侧重的传输功率不同,而后者采用的是磁耦合共振技术。本文基于Qi1.2标准设计了一种支持扫码触发无线充电的中功率15W智能高效无线充电系统。该系统支持微信APP扫描二维码触发无线充电功能,主要由硬件系统和软件系统两部分组成。硬件系统包括无线充电发射器、接收器、扫码控制器电路三部分。发射器的功能是将输入的直流电能转化为无线电能并传输给接收器。接收器则会接收、利用这一电能。扫码控制器则控制着整个系统的打开与关断,当扫码成功后,系统开始工作。软件系统保证了功率传输的有序进行,控制着发射器与接收器之间的通信、扫码控制器与服务器之间的通信等。该系统最大的特点便是智能化、高效率、支持无线快充和扫码控制。根据接收器负载的需要,系统逆变器半桥/全桥逆变模式的切换达到了最优化功率匹配的效果。同时该系统能够根据硬件上Q值检测电路和软件中的校准功率损耗来识别金属异物(Foreign Object Debris),且能识别直径19mm的一角硬币。实验结果表明,本系统比普通无线充电系统的效率高13%。另外,该系统可支持10V/1.5A输出,适用于支持快充的手机,并能通过使用手机APP扫描二维码触发无线充电功能。
[Abstract]:So far, three technical standards have been formed in the field of wireless charging, namely the Qi Standard Duracell Powermat of the WPC(Wireless Power Consortium, and the A4WP standard led by Qualcomm and Samsung. The former two adopt electromagnetic induction technology, but the transmission power is different, while the latter is magnetically coupled resonance technology. Based on Qi1.2 standard, this paper designs a 15W intelligent wireless charging system with medium power, which supports code sweep trigger wireless charging. The system supports WeChat APP scanning QR code triggering wireless charging function and consists of two parts: hardware system and software system. The hardware system includes three parts: wireless charging transmitter, receiver and code sweep controller circuit. The function of the transmitter is to convert the input DC energy into radio energy and transmit it to the receiver. The receiver receives and uses the electricity. The code-sweeping controller controls the opening and closing of the whole system. The software system ensures the orderly transmission of power, controls the communication between transmitter and receiver, and the communication between code sweeping controller and server. The main features of the system are intelligence, high efficiency and support for wireless fast charging and code sweeping control. According to the need of receiver load, the switching of half-bridge / full-bridge inverter mode achieves the optimal power matching effect. At the same time, the system can identify the foreign Object debrisn according to the calibrated power loss in the Q value detection circuit and software on the hardware, and can recognize the dime of the diameters of the 19mm. The experimental results show that the efficiency of this system is 13% higher than that of ordinary wireless charging system. In addition, the system can support 10V/1.5A output, suitable for fast charging mobile phone, and can use mobile phone APP scan QR code trigger wireless charging function.
【学位授予单位】：东华大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM910.6

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