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The Research on VRLA Battery Storage Capacity to Test Technology

Author: ZhangLiGuo
Tutor: JiangJingYi
School: Daqing Petroleum Institute
Course: Control Theory and Control Engineering
Keywords: Battery capacity test Internal resistance detection Voltage patrol Reliability Design Digital inertial filter method
CLC: TM912
Type: Master's thesis
Year: 2009
Downloads: 182
Quote: 0
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Abstract


The lead-acid battery power storage capacity testing is an important part of understanding normal battery running . It can achieve real-time monitoring of the service life of the battery and the battery capacity , to improve the reliability of the battery use , improve the stable operation of the system as a whole . Thesis summarizes some of the characteristics of the battery , the two types of battery comparator (AGM and GFL) , analysis of the uniformity and consistency of the battery capacity of the battery pack , gives the measure of the uniformity of the standard error of the VRLA batteries σ defined ; affect battery power the monitored factors and commonly used method of detecting . Important battery parameters detection in terms of the overall operation of the battery , its main parameters , single battery terminal voltage , the series battery voltage , the inverter voltage runtime , battery internal resistance , the battery capacity , this article by the battery voltage inspection table and internal resistance detector , respectively the entire process of hardware design and software design methods , by actual run validated instrument reliability and feasibility of design , reliable battery performance theory . data. The error to avoid sampling the numerical fluctuations caused by the display beating the inertia of the application of digital filtering method suppress fluctuations in the sample values ​​, that is, using SCM software to simulate the resistance-capacitance low-pass filter circuit to eliminate jitter and high harmonic component to achieve The numerical stability . Build the the resistance patrol the base model , a combination of internal resistance measurement of the single cell voltage patrol circuit optimization. AC injection method optimization , novel structure proposed measurement VRLA batteries internal resistance , the use of digital phase-shift technology to solve the technical problems of the internal resistance measurement circuit voltage and current phase difference measurement . Then gives the specific implementation method and circuit solutions , program design through implementation prove the feasibility . Proposed a method of using the measured battery impedance to predict battery life .

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CLC: > Industrial Technology > Electrotechnical > Independent power supply technology (direct power) > Battery
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