本文選題：電池實驗平臺 + 電池外特性��； 參考：《燕山大學》2014年碩士論文

【摘要】：近些年來，分布式能源發(fā)電、微電網(wǎng)和電動車逐漸成為研究人員關注的重要課題，然而蓄電池的荷電狀態(tài)難以準確估計制約了這一系列重要技術的發(fā)展。為了解決這一問題，本文調(diào)研了現(xiàn)有的等效電路模型，，分析了蓄電池荷電狀態(tài)準確估計困難的原因，設計了蓄電池特性實驗平臺，之后基于數(shù)據(jù)擬合的方法對電池的放電特性進行了分析，提出了兩種基于run-time模型的建模方法，從而為準確地估計電池的荷電狀態(tài)提供有效的技術基礎。 主要工作內(nèi)容和研究成果如下： 1、調(diào)研了電池的分類與基本組成、鉛酸蓄電池基本原理與特點和鉛酸蓄電池等效電路模型，認為電池的等效電路模型有阻抗模型、戴維南模型和run-time模型三類，對閥控式鉛酸蓄電池的等效電路模型進行研究有重大意義； 2、針對特定蓄電池設計了實驗平臺及相關控制系統(tǒng)的軟硬件架構。硬件部分包括主電路和控制電路等；軟件部分包括通信及實驗平臺各部分之間的分工與協(xié)調(diào)，電壓、電流和PWM的保護與實驗數(shù)據(jù)采集等； 3、對等效電路模型中有代表性的電池三階模型進行了仿真，對其優(yōu)缺點進行了探討；由所設計的實驗臺獲得相應實驗數(shù)據(jù)，結(jié)合數(shù)據(jù)擬合的方法，提出了可歸類于run-time模型的兩種電池放電特性建模方法：基于放電曲線分段的建模方法和基于放電百分比的建模方法。利用第一種方法，給定任意放電電流就可以得出該電流下的放電電壓曲線、剩余放電時間和剩余電量等；第二種方法首先分析了電池荷電狀態(tài)(State of Charge, SOC)概念的局限性，然后提出了放電百分比(Percentage ofDischarge, POD)的概念，基于此概念建立了電池放電模型，應用此模型可以預測剩余放電時間的同時，還可以分析電池的一致性問題。
[Abstract]:In recent years, distributed energy generation, microgrid and electric vehicles have gradually become an important issue that researchers pay attention to. However, it is difficult to accurately estimate the charge state of batteries, which restricts the development of this series of important technologies. In order to solve this problem, this paper investigates the existing equivalent circuit models, analyzes the reasons why it is difficult to estimate the charging state of batteries accurately, and designs an experimental platform for battery characteristics. Then, based on the data fitting method, the discharge characteristics of the battery are analyzed, and two modeling methods based on run-time model are proposed, which provide an effective technical basis for accurately estimating the charged state of the battery. The main work and findings are as follows: 1. The classification and composition of the battery, the basic principle and characteristics of the lead-acid battery and the equivalent circuit model of the lead-acid battery are investigated. It is considered that there are three kinds of equivalent circuit models of the battery: impedance model, Thevenen model and run-time model. It is of great significance to study the equivalent circuit model of valve-controlled lead-acid battery. 2. The hardware and software architecture of the experimental platform and the related control system are designed for the specific battery. The hardware part includes the main circuit and the control circuit, the software part includes the division and coordination of the communication and the experiment platform, the protection of the voltage, current and PWM, and the data acquisition of the experiment, etc. 3. The typical third order battery model in the equivalent circuit model is simulated, and its advantages and disadvantages are discussed, and the corresponding experimental data are obtained from the designed experimental bench, and the method of data fitting is combined. This paper presents two modeling methods for battery discharge characteristics which can be classified into run-time model: one based on discharge curve segmentation and the other based on percentage of discharge. By using the first method, the discharge voltage curve, the residual discharge time and the residual quantity of charge can be obtained under the given arbitrary discharge current. The second method first analyzes the limitation of the concept of state of Charge, SOC) in the charged state of the battery. Then, the concept of percentage of discharge charge (POD) is proposed, based on which the battery discharge model is established. The residual discharge time can be predicted and the consistency of the battery can be analyzed by using the model.
【學位授予單位】：燕山大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM912.1

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本文編號：1984153