In this thesis , the chemic structure , performance and charging scheme of li - ion and li - polymer battery are studied . and based on the effect of charging process and method to battery ’ s performance , some problems in the period of charging are raised and as a solution a dc / dc charger ic for single li - ion or li - polymer battery is designed 针对上述问题,这里从锂电池的结构及化学原理着手,通过对锂电池性能及常用充电方法的研究,分析了充电过程及充电方法对锂电池性能的影响,提出了锂电池充电中应注意的问题。
The experiment results indicated that by application of new control strategy , the charging efficiency was raised to about 90 % , the charging period was reduced to within 2 hours , and there was no apparent electrolyte temperature - rise , which means high efficiency , fast and damage - free charge is realized 实验表明，采用新型控制策略的充电过程可使充电效率提高到90左右，充电时间缩短到2小时以内，蓄电池电解液的温升较之常规充电亦没有明显升高，实现了高效、快速、无损的充电思想。
This paper analyses , compares and researches the measurement of solar array deeply . the system takes advantage of a new measurement of solar array that samples the signal of voltage and current continually during charging capacitor by solar array to redraw the i - v characteristic of solar array . this method can test the i - v characteristic of solar array conveniently and quickly in contrast with the traditional method 针对太阳电池阵列的测试方法，本文进行了详细的分析比较和探讨，系统采用一种新型的电容动态充电方式对太阳电池阵列进行特性测试，该方法是通过检测太阳电池阵列对电容的充电过程中电流、电压的变化数据，重现光伏阵列的i - v特性，采用这种方式可以快速而方便的测量太阳电池阵列的i - v特性，具有体积小、重量轻等特点，克服了传统现场测试方法的弊端。
Many experiments on the effects with the change of several parameters , such as initial charging current , amplitude and frequency of positive pulses , variety of the amplitude of positive pulses among each charging stages , amplitude and duration of negative pulses , duration between positive and negative pulses , have been performed . the results of analysis and comparison of experimental data verify the validity and feasibility of the fast - charging method . on this basis , a new type of control strategy is advanced 就充电过程中的起始充电电流、正脉冲的幅值、正脉冲的频率、各充电级之间正脉冲幅值的变化幅度、负脉冲的幅值、负脉冲的持续时间、正负脉冲之间的停歇时间等几个参数进行了大量的实验,对实验数据进行分析和比较,验证了快速充电方法的有效性和可行性,在此基础上提出了一种新型快速充电控制策略。
The charge and discharge performances of different composites were studied by the charge and discharge ; the structures of composites were characterized by sem ; the electrochemical properties of sulfur positive materials were characterized by cyclic voltammetry and eis . we studied the charge process , discharge process , charge - discharge efficiency , self heat , and self - discharge of lithium - sulfur system on system shuttle constant , conduct the mechanism of these processes and simply analyse them 以充放电技术研究了不同类别复合正极的充放电性能;以扫描电镜技术观测了复合正极的表面形貌;以循环伏安技术和交流阻抗技术研究了复合正极电极的电化学性能;并初步探讨了锂-硫电池体系中充电过程、放电过程、充放电效率、自热和自放电等对体系飞梭常数的影响,推导了这些过程的机理并简要的进行了分析。
But the active silver substrate of sers used in the study of the cathode material cannot be used in positive electrodes . in the lithium ion battery the working voltage of positive electrode may reach and exceed 4 . 0v , however the silver will be oxidated at 3 . 6v ( vs li / li + ) , and in the first charge process , the nanometer silver can be dissolved into the electrolyte and no longer has sers active 但银衬底却不能应用于正极材料表面sei膜的研究当中,因为锂离子电池中正极的工作电位可达4 . 0v以上,而银在3 . 6v ( vsli / li + )附近就开始发生氧化反应,在第一次充电过程中,正极材料表面包覆的银颗粒就会因电化学反应溶入电解液中,不再具有表面增强的效果。
The chemical compositions of sei films formed on the interfaces of a3000 samples in different electrolytes during the first charging process are mainly li2co3 and lioco2r , but their textures are different . the sei films formed in ec - based electrolytes are thin and compact , which can prevent the solvated lithium ions from cointercalating between two graphene layers of the graphite crystallites effectively , therefore samples a3000 have small irreversible capacities and good compatibilities with this kinds of electrolytes . however , the sei films formed in pc - based electrolytes are thick but defective , which could not effectively prevent solvated lithium ions from intercalation , therefore sample a3000 shows large irreversible capacities in pc - based electrolytes and bad compatibilities with this kind of electrolytes A _ ( 3000 )试样在六种不同的电解液中，首次充电过程中所形成的sei膜，其化学组分均为碳酸锂和烷基碳酸锂，但在ec基电解液中形成的sei膜薄而致密，可以有效地阻止溶剂化锂离子插入石墨层间，不可逆容量少，表现出与a _ ( 3000 )试样有良好的相容性；在pc基电解液中形成的sei膜厚，且有缺陷，不能有效地阻止溶剂化锂离子嵌入试样中石墨微晶的层间，不可逆容量大，与a _ ( 3000 )试样的相容性极差。
Constrained to technologies , the lead - acid battery mainly adopted traditional charging methods such as constant voltage , constant voltage with current limitation , constant current , etc . the charging current of these methods cannot match efficiently the acceptance curve of the lead - acid battery proposed by j . a . mas . as a result , some of these methods have a low time efficiency and incompleteness charging . and some of them lead to overcharge and gas - generation , which will result in low - efficiency , time - consuming and prone - to - damage of the charging operation 铅酸蓄电池由于受到技术条件的限制,其充电主要采用恒压、恒压限流、恒流等常规充电模式,这些方法的充电电流未能有效的遵从马斯所提出的可接受充电电流曲线,因而有的充电方法时间效率低、充电不完全;有的则存在着过充电和析气等现象,并导致充电过程的低效,耗时和易损。
The author ' s attempt in this dissertation is by utilizing the technical advances and newest fruits in power electronics , pattern recgnition and parameter identification , artificial intelligence , and dsp application to study the problem of multi - aim optimization , striving for a high - efficiency , fast and damage - free approach of lead - acid battery charging 作者在论文工作中试图利用现代电力电子技术、模式识别和参数辨识、人工智能和dsp应用等领域中的技术进展和最新成果，探索铅酸蓄电池充电过程的多目标优化问题，力求形成高效、快速、无损的铅酸蓄电池优化充电思想和技术方案。
The charging of lead - acid battery , the most widely accepted secondary battery , constrained to technological limitation , mainly adopted traditional charging methods such as constant voltage , constant voltage with current limitation , constant current and etc . those methods may not follow the internal physical and chemical laws within the battery , leading to serious overcharge and gas - generation , and resulting in low - efficiency , time - consumming and prone - to - damage of the charging operation 二次电池中被最广泛接受的铅酸蓄电池由于技术条件的限制，其充电主要采用恒压、恒压限流、恒流等常规模式，这些充电方法未能遵从电池内部的物理化学规律，大多存在着严重的过充电和析气等现象，并导致充电过程的低效，耗时和易损。
