發(fā)布時(shí)間：2018-06-13 03:30

  本文選題：無(wú)線充電 + Qi標(biāo)準(zhǔn)��； 參考：《蘇州大學(xué)》2014年碩士論文

【摘要】：無(wú)線充電具有環(huán)境適應(yīng)性強(qiáng)、使用方便、防爆安全等優(yōu)點(diǎn)，在一些特殊場(chǎng)合具有重要的應(yīng)用價(jià)值，發(fā)展前景廣闊。效率和通用性是影響無(wú)線充電技術(shù)推廣應(yīng)用的最大問(wèn)題，無(wú)線充電聯(lián)盟的Qi標(biāo)準(zhǔn)規(guī)定了無(wú)線充電發(fā)射器與電能接收端之間的功率傳輸和通信協(xié)議，可以對(duì)無(wú)線充電器的輸出功率進(jìn)行調(diào)節(jié)，提高系統(tǒng)的傳輸效率。MC56F82743是Freescale公司最近推出的通用型數(shù)字信號(hào)處理器(DSC)，具有較高的性價(jià)比。本文設(shè)計(jì)了符合Qi標(biāo)準(zhǔn)的磁耦合式無(wú)線充電器(TX)系統(tǒng)，是作者實(shí)習(xí)期間參與設(shè)計(jì)的此芯片的應(yīng)用方案，能夠與符合此標(biāo)準(zhǔn)的無(wú)線電能接收端(RX)配合使用，實(shí)現(xiàn)高效率的電能傳輸，同時(shí)具有過(guò)壓保護(hù)、過(guò)流保護(hù)、低功耗和金屬異物檢測(cè)(FOD)的功能。 本文首先對(duì)無(wú)線充電器的原理進(jìn)行詳細(xì)分析，包括充電器的基本結(jié)構(gòu)、阻抗匹配方式、PFM控制方法等。同時(shí)利用Saber軟件對(duì)無(wú)線充電系統(tǒng)進(jìn)行仿真，利用搭建的仿真電路可以直觀地了解TX在不同參數(shù)下的工作情況，為系統(tǒng)設(shè)計(jì)提供參考。 在上文分析的基礎(chǔ)上，根據(jù)Qi標(biāo)準(zhǔn)設(shè)計(jì)了一臺(tái)輸出功率為5W的智能無(wú)線充電器，論文詳細(xì)地給出了充電器的硬件設(shè)計(jì)，，包括主控芯片的外設(shè)、采樣電路、主功率回路、信號(hào)解調(diào)電路及物體檢測(cè)電路部分。同時(shí)給出了系統(tǒng)軟件的詳細(xì)設(shè)計(jì)，包括主要功能模塊的關(guān)鍵代碼、程序流程圖，基于電壓增益的TX輸出功率的控制算法PFM+PWM，降低功耗和金屬異物檢測(cè)的算法等。 最后，將本文設(shè)計(jì)的樣機(jī)進(jìn)行實(shí)驗(yàn)驗(yàn)證，得到充電器在不同工作情況下的波形圖，以及系統(tǒng)的充電效率。結(jié)果表明，該無(wú)線充電器能夠符合設(shè)計(jì)要求，且充電性能和效率達(dá)到了預(yù)期的設(shè)計(jì)要求。
[Abstract]:Wireless charging has many advantages, such as strong environmental adaptability, convenient use, explosion-proof safety and so on. It has important application value in some special occasions and has a broad development prospect. Efficiency and versatility are the biggest problems affecting the popularization and application of wireless charging technology. The Qi standard of wireless charging alliance prescribes the power transmission and communication protocol between the wireless charging transmitter and the power receiving terminal. The output power of wireless charger can be adjusted, and the transmission efficiency of the system can be improved. MC56F82743 is a universal digital signal processor recently introduced by Freescale, which has a high performance-price ratio. In this paper, a magnetically coupled wireless charger (TX) system, which conforms to Qi standard, is designed, which is the application scheme of this chip, which can be used in conjunction with the standard radio receiver (RX). It achieves high efficiency power transmission, and also has the functions of over-voltage protection, over-current protection, low power consumption and metal foreign body detection FODs. In this paper, the principle of wireless charger is analyzed in detail, including the basic structure of charger, impedance matching method and PFM control method. At the same time, the wireless charging system is simulated by using Saber software. The simulation circuit can intuitively understand the working conditions of TX under different parameters, and provide a reference for the design of the system. Based on the above analysis, an intelligent wireless charger with output power of 5W is designed according to Qi standard. The hardware design of the charger is presented in detail, including the peripheral device of the main control chip, sampling circuit, main power loop, and so on. Signal demodulation circuit and object detection circuit. At the same time, the detailed design of the system software is given, including the key code of the main function module, the program flow chart, the control algorithm of TX output power based on voltage gain, the algorithm of reducing power consumption and detecting metal foreign body, etc. Finally, the prototype designed in this paper is verified by experiments, and the waveform diagram of the charger under different working conditions and the charging efficiency of the system are obtained. The results show that the wireless charger can meet the design requirements, and the charging performance and efficiency meet the expected design requirements.
【學(xué)位授予單位】：蘇州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM910.6

【參考文獻(xiàn)】

相關(guān)期刊論文 前7條

1 常書惠;;無(wú)線電能傳輸技術(shù)與Qi標(biāo)準(zhǔn)[J];電子商務(wù);2011年04期

2 李陽(yáng);楊慶新;陳海燕;閆卓;張獻(xiàn);薛明;;無(wú)線電能傳輸系統(tǒng)中影響傳輸功率和效率的因素分析[J];電工電能新技術(shù);2012年03期

3 劉剛;鄭青玉;王德釗;;一種基于電磁感應(yīng)的無(wú)線充電方法[J];北京信息科技大學(xué)學(xué)報(bào)(自然科學(xué)版);2013年02期

4 張益銘;;無(wú)線充電技術(shù)標(biāo)準(zhǔn)淺析[J];數(shù)字技術(shù)與應(yīng)用;2013年04期

5 段力學(xué);;PID參數(shù)整定方法分類與概述[J];現(xiàn)代計(jì)算機(jī)(專業(yè)版);2012年07期

6 張茂春;王進(jìn)華;石亞偉;;無(wú)線電能傳輸技術(shù)綜述[J];重慶工商大學(xué)學(xué)報(bào)(自然科學(xué)版);2009年05期

7 邱麗,曾貴娥,朱學(xué)峰,孫培強(qiáng);幾種PID控制器參數(shù)整定方法的比較研究[J];自動(dòng)化技術(shù)與應(yīng)用;2005年11期

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