【摘要】：目前吉林省X化工物料采購(gòu)公司開始在供電運(yùn)轉(zhuǎn)系統(tǒng)中采用蓄電池和鋰電池結(jié)合的方式,為監(jiān)控、重要電子儀表、應(yīng)急照明等提供用電保障,這對(duì)于化工類企業(yè)而言有著重要的意義。因此通過(guò)開發(fā)新型鋰離子電池充電技術(shù),這對(duì)公司生產(chǎn)運(yùn)作具有積極的現(xiàn)實(shí)意義和促進(jìn)價(jià)值。根據(jù)鋰電池充電的特點(diǎn),結(jié)合市面上常用充電器本身存在的缺點(diǎn),開發(fā)出一種新型的采用單片機(jī)控制的智能型充電控制器,并設(shè)計(jì)一種具有電壓和電流檢測(cè)功能的智能鋰電池充電器系統(tǒng)。論文主要研究?jī)?nèi)容為:(1)分析了均衡控制以及充電電流輸入控制技術(shù)、停充控制等技術(shù),獲得了鋰電池充電技術(shù)的理論研究及現(xiàn)實(shí)推導(dǎo)依據(jù),搭建了鋰電池的智能充電硬件平臺(tái),以ATmega16單片機(jī)為控制核心,從Buck降壓電路、采樣電路、保護(hù)與均衡電路以及外圍設(shè)備這幾部分來(lái)研究,從而滿足實(shí)驗(yàn)的硬件配備。(2)軟件方面針對(duì)界面設(shè)計(jì)、寄存器、電池檢測(cè)和恒壓恒流充電四個(gè)角度展開研究。應(yīng)用PWM脈寬調(diào)制技術(shù),控制系統(tǒng)充放電管理。檢測(cè)充電電路及控制電路的正常工作,再調(diào)節(jié)恒壓恒流,從而對(duì)電路進(jìn)行電壓控制。(3)在實(shí)驗(yàn)平臺(tái)上進(jìn)行了硬件配置以及軟件配置后的變電流高速充電實(shí)驗(yàn),分別從變電阻均衡協(xié)調(diào)的有效操控和操控電壓負(fù)量增加進(jìn)行實(shí)驗(yàn)分析,并得出均衡電阻數(shù)值需要按照單體電池的電壓數(shù)值的變動(dòng)程度進(jìn)行逐漸性系數(shù)變化的結(jié)論,從而保障智能充電實(shí)驗(yàn)的運(yùn)行。論文所設(shè)計(jì)的裝置具有智能控制充電進(jìn)程,智能判斷充電電流大小和充電終止?fàn)顟B(tài),有效防止鋰電池的欠充或過(guò)充,具有高效安全的充電控制和保護(hù)功能。
[Abstract]:At present, Jilin X Chemical Materials Purchasing Company has begun to use the combination of batteries and lithium batteries in the power supply operation system to provide electrical protection for monitoring, important electronic instruments, emergency lighting, etc. This is of great significance to chemical enterprises. Therefore, the development of new lithium ion battery charging technology has positive practical significance and promoting value for the production and operation of the company. According to the characteristics of lithium battery charging and the shortcomings of the usual chargers in the market, a new type of intelligent charging controller controlled by single chip computer is developed. An intelligent lithium battery charger system with voltage and current detection function is designed. The main contents of this paper are as follows: (1) the equalization control, charging current input control technology, stop charge control technology and other technologies are analyzed. The theoretical research and practical derivation of lithium battery charging technology are obtained, and the intelligent charging hardware platform of lithium battery is built. Taking ATmega16 single chip microcomputer as the control core, this paper studies the Buck step-down circuit, the sampling circuit, the protection and equalization circuit and the peripheral equipment, so as to satisfy the hardware equipment of the experiment. (2) the software is aimed at the interface design, register, and so on. Battery detection and constant voltage and constant current charging are studied from four angles. PWM pulse width modulation technology is applied to control system charge and discharge management. Detecting the normal operation of the charging circuit and the control circuit, then adjusting the constant voltage and constant current to control the voltage of the circuit. (3) the hardware configuration and the variable current high-speed charging experiment after the software configuration are carried out on the experimental platform. The experimental analysis is carried out from the effective control of variable resistance equalization and the increase of negative control voltage, and the conclusion is drawn that the equalization resistance needs to change gradually according to the change degree of voltage value of single cell. So as to ensure the operation of intelligent charging experiment. The device designed in this paper has the functions of intelligent control of charging process, intelligent judgement of charging current and charging termination state, effective prevention of undercharge or overcharge of lithium battery, and efficient and safe charging control and protection function.
【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM912

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