礦用救生艙用鋰電池組高效管理的研究
發(fā)布時間：2018-11-11 20:17
【摘要】：礦用救生艙是用來研究解決礦山企業(yè)的重大災(zāi)害應(yīng)急救援的一項關(guān)鍵技術(shù)設(shè)備,為了保證救生艙能夠在礦井災(zāi)難發(fā)生時正常使用,需要配備不間斷電源。而鋰離子電池,以其較高的能量質(zhì)量比、能量體積比、無記憶效應(yīng)、較長的循環(huán)使用壽命等特點(diǎn),成為救生艙供電的不間斷電源首選材料。 本文首先介紹了鋰電池的應(yīng)用現(xiàn)狀和國內(nèi)外對電池管理系統(tǒng)的研究現(xiàn)狀,并采用磷酸鐵鋰電池作為研究對象,簡要說明了其工作原理。其次介紹了鋰電池的關(guān)鍵性能和特性,對鋰電池的充放電特性、溫度特性、倍率特性作了重點(diǎn)說明。再者,一個完整的電池管理系統(tǒng)包括五大部分,我們主要研究的是電池的狀態(tài)檢測、剩余電量評估和均衡控制管理。對于電池的剩余電量(SOC)估計,我們提出了結(jié)合Ah計量法、開路電壓法和擴(kuò)展卡爾曼濾波算法的新算法。同時,為了適合卡爾曼濾波算法,使用復(fù)合模型來對電池建模。由于電池組中的各個單體電池存在了不可避免的不一致性,我們需要給系統(tǒng)加入均衡控制管理結(jié)構(gòu)。本文采用非耗散型雙向均衡控制電路,使相鄰的兩個單體電池之間的多余能量可以雙向流動,減少了能量的損失。另外,為了控制開關(guān)管的通斷,還加入了驅(qū)動電路的設(shè)計。在系統(tǒng)的硬件設(shè)計中,采用了TMS320LF2407作為主控制器,外圍電路則主要包括信號的采集和串行通訊電路的設(shè)計,需要采集的信號包括串聯(lián)電池組中的單體電池電壓值、電池組總電壓值、電池組電流值和電池組的溫度值。串行通訊電路采用的是RS-485的接口設(shè)計,以滿足工業(yè)上長距離通訊的控制要求。在軟件設(shè)計上,采用定時器中斷來采集數(shù)據(jù),并從中調(diào)用其他子程序的執(zhí)行。最后,我們用MATLAB來仿真驗證SOC算法的可行性和估算精度,仿真的結(jié)果表明該算法能夠?qū)φ`差進(jìn)行修正,達(dá)到了很好的估算效果。對于均衡控制電路的實驗,與另外兩種均衡控制電路結(jié)構(gòu)進(jìn)行對比,表明了該均衡控制電路結(jié)構(gòu)在均衡性能和均衡時間上都有很大的提高。文章的結(jié)尾是對本文研究的總結(jié)與展望。
[Abstract]:Mine lifebuoy is a key technical equipment used to study and solve the serious disaster emergency rescue of mine enterprises. In order to ensure the lifebuoy can be used normally in mine disaster, uninterruptible power supply is needed. Because of its high energy mass ratio, energy volume ratio, no memory effect and long cycle life, Li-ion battery has become the first choice of power supply materials for lifebuoys. In this paper, the application status of lithium battery and the research status of battery management system at home and abroad are introduced, and the working principle of lithium iron phosphate battery is briefly explained. Secondly, the key performance and characteristics of lithium battery are introduced. The charge-discharge characteristic, temperature characteristic and rate characteristic of lithium battery are emphasized. Furthermore, a complete battery management system consists of five parts. We mainly study battery status detection, residual power evaluation and balance control management. For the (SOC) estimation of battery residual quantity, we propose a new algorithm combining Ah metering method, open circuit voltage method and extended Kalman filter algorithm. At the same time, in order to fit the Kalman filter algorithm, the composite model is used to model the battery. Due to the inevitable inconsistency among the individual cells in the battery pack, we need to add a balanced control management structure to the system. In this paper, the non-dissipative bi-directional equalization control circuit is used to make the excess energy between two adjacent cells flow in both directions, thus reducing the loss of energy. In addition, in order to control the switch on and off, the design of driving circuit is also added. In the hardware design of the system, TMS320LF2407 is used as the main controller, the peripheral circuit mainly includes signal acquisition and serial communication circuit design, and the signal to be collected includes the voltage value of the single cell in the series battery pack. The total voltage of the battery, the current of the battery and the temperature of the battery. The serial communication circuit adopts the interface design of RS-485 to meet the control requirement of long distance communication in industry. In software design, timer interrupt is used to collect data and call the execution of other subprograms. Finally, we use MATLAB to verify the feasibility and accuracy of the SOC algorithm. The simulation results show that the algorithm can correct the error and achieve a good estimation effect. The experiments of equalization control circuit are compared with the other two equalization control circuit structures. The results show that the equalization performance and equalization time of the equalization control circuit are greatly improved. The conclusion of the article is the summary and prospect of this paper.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TM912;TD774
[Abstract]:Mine lifebuoy is a key technical equipment used to study and solve the serious disaster emergency rescue of mine enterprises. In order to ensure the lifebuoy can be used normally in mine disaster, uninterruptible power supply is needed. Because of its high energy mass ratio, energy volume ratio, no memory effect and long cycle life, Li-ion battery has become the first choice of power supply materials for lifebuoys. In this paper, the application status of lithium battery and the research status of battery management system at home and abroad are introduced, and the working principle of lithium iron phosphate battery is briefly explained. Secondly, the key performance and characteristics of lithium battery are introduced. The charge-discharge characteristic, temperature characteristic and rate characteristic of lithium battery are emphasized. Furthermore, a complete battery management system consists of five parts. We mainly study battery status detection, residual power evaluation and balance control management. For the (SOC) estimation of battery residual quantity, we propose a new algorithm combining Ah metering method, open circuit voltage method and extended Kalman filter algorithm. At the same time, in order to fit the Kalman filter algorithm, the composite model is used to model the battery. Due to the inevitable inconsistency among the individual cells in the battery pack, we need to add a balanced control management structure to the system. In this paper, the non-dissipative bi-directional equalization control circuit is used to make the excess energy between two adjacent cells flow in both directions, thus reducing the loss of energy. In addition, in order to control the switch on and off, the design of driving circuit is also added. In the hardware design of the system, TMS320LF2407 is used as the main controller, the peripheral circuit mainly includes signal acquisition and serial communication circuit design, and the signal to be collected includes the voltage value of the single cell in the series battery pack. The total voltage of the battery, the current of the battery and the temperature of the battery. The serial communication circuit adopts the interface design of RS-485 to meet the control requirement of long distance communication in industry. In software design, timer interrupt is used to collect data and call the execution of other subprograms. Finally, we use MATLAB to verify the feasibility and accuracy of the SOC algorithm. The simulation results show that the algorithm can correct the error and achieve a good estimation effect. The experiments of equalization control circuit are compared with the other two equalization control circuit structures. The results show that the equalization performance and equalization time of the equalization control circuit are greatly improved. The conclusion of the article is the summary and prospect of this paper.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TM912;TD774
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