摘 要：因不同的类型电子产品需要使用不同的充电器，充电时还要寻找合适的插口和理顺接线，这给使用者带来了不少麻烦。针对以上问题，设计出了基于电磁感应原理的智能无线充电器。系统由方波信号发生器、功率放大器、发送线圈、接收线圈及接收端电路组成，通过振荡器、功率放大和初级线圈将交流电能传出去，接收端通过次级线圈接收交流能量后，整流变为直流电能给电子设备供电。设计中详细分析了系统结构组成及工作原理，进行了相关硬件的设计与安装调试，并进行了有关测试，结果表明，该设计能够较好实现充电的功能，还能解决传统充电器不兼容的问题，具有使用方便、适用面广的优点，有较高的推广应用价值。65422
毕业论文关键词：电能传输，电磁感应，无线充电
Abstract:Because of the different types of electronic products need to use a different charger, charging even when looking for the right jack and smooth connection, this brought a lot of trouble to the user.To solve above problems, designed the intelligent wireless charger based on electromagnetic induction principle.System consists of square wave signal generator, power amplifier, sending coil circuit, receiving coil, and the receiving end, through the oscillator, power amplifier and primary coil'll come out ac electricity, energy exchange is receiving end through the secondary coil, rectifier dc can give electronic equipment power supply.Are analyzed in detail in the design of system structure and working principle of the related hardware design and installation and debugging, and the related test, the results show that the design can realize the function of charging, can also solve the problems of the traditional charger is not compatible, possesses the advantages of convenient use, wide applicable, has higher application value.
Key words: electrical energy transmission, electromagnetic induction, wireless charger
目 录
1 前言 4
1.1研究的目的和意义 4
1.3设计要求和实现思路 6
2 理论基础 6
2.1系统的模型 6
2.2参数分析 8
3硬件电路的设计 20
3.1 方波发生器 20
3.2功率放大电路 24
3.3接收端电路 27
4系统的安装与测试 29
4.1效率与线圈距离的关系测试 29
4.2效率与负载的关系测试 33
4.3谐振频率随距离的变化 34
结 论 35
参考文献 36
致 谢 36
1 前言
无线充电是一项令人兴奋的技术。无线充电是指具有电池的装置透过无线感应的方式取得电力而进行充电。
今年，无线充电技术经过数年的推广与演进后开始受到各界瞩目。其方便性可以让消费者愿意支付额外的费用购买无线充电相关产品；由于这产技术相当新颖且各厂商有自己对技术的表述，所以无线充电、感应式电力、非接触充电、无接点充电都是泛指相同的技术，距离1mm到数米都是一样是无线，供电端与受电端交互作用就称感应，所以无线充电是广义的名词没有一定的规格。 基于电磁感应原理无线智能充电器的设计+PCB电路图:http://www.751com.cn/zidonghua/lunwen_73054.html