智能型锂电池保护板电路的设计与实现

I智能型锂电池保护板电路的设计与实现摘要锂离子电池因储能容量大、使用寿命长、清洁环保、能量体积比大等众多优点，所以在各行各业被广泛使用，逐渐成为了电池的主流产品。然而因锂电池的能量密度高，也使得难以确保其安全性，所以需要相匹配的电池保护电路来确保电池以及使用设备的安全。本文介绍了通过锂离子电池的充放电特点设计一种支持多种规格锂电池及电池组的保护电路的详细过程。本文以锂电池的充放电特点作为研究主体，详细阐述了作者在学士学位论文工作期间对锂电池充放电过程中对其保护的研究与设计。介绍了锂电池的特点以及其保护电路的发展现状及趋势，其次说明了锂电池的充放电的概念、原理、制定目标设计参数以及保护电路的设计过程、实现方法。设计过程中，首先提出三种可行性方案，并通过理论分析进行方案筛选，确定由精工电子的电源管理芯片S-8209为核心构成的设计方案。然后通过对S-8209进行Pspice建模并仿真，验证其功能并为设计方案提供理论基础。然后绘制电路图，并施以改进优化设计方案。最后进行锂电池保护电路的调试，并对毕业设计期间的工作作出总结。关键词：锂电池保护电路电池组Pspice建模S-8209TheDesignandImplementationOfIntelligentLithium-ionBatteryProtectionIICircuitAbstractLithium-ionbatteryiswidelyusedinalmostallwalksoflife,becauseofitslargecapacity,longusefullife,environmentfriendlyandlargevolumeratioofenergy.Itisbecomingthemainstreamproductsofbattery.Butitshighvolumeratioofenergyisalsotheunstablecautionofsecurity.Soitisnecessarytomatchthebatteryprotectioncircuitrytoensurethesafetyofthebatteryandtheequipmentofusingthebattery.Thisarticledescribestheadoptionoflithium-ionbatterychargeanddischargecharacteristicsofavarietyofspecificationstodesignalithiumbatterygroupandbatteryprotectioncircuit.Inthispaper,thechargeanddischargecharacteristicsoflithiumbatteryasaresearchsubjectduringtheprocess.Thisarticleintroducesthecharacteristicsoflithiumbatteryanditsprotectioncircuitdevelopmentandtrend,followedbyshowstheprinciplesoflithiumbatterychargeanddischarge.Andthenmakethedesignsettings.Duringthedesignprocess,firstlyproposedvariousofdesignoptions.Throughtheoreticalanalysistodeterminetheprogram,selectedSeikoelectronicpowermanagementICS-8209toachievethedesign.ThencarriedoutontheS-8209Pspicemodelandsimulationtoverifyitsfunctionalityandprovideatheoreticalbasisforthedesign.Thendrawthecircuitdiagram,andhelpingtoimproveoptimizationdesign.Finally,debugthelithiumbatteryprotectioncircuitandsummarymyworkduringthegraduationproject.IIIKeywords:Lithium-ionbatteryBatteryprotectioncircuitPspice-modelingLithium-ionbatterygroupS-8209目录1绪论........................................................................................................................11.1课题研究背景.............................................................................................11.2课题的研究方向和发展前景.....................................................................21.2.1锂电池保护电路的现状...................................................................21.2.2锂电池保护电路的发展前景..........................................................31.3选题的目的和意义.....................................................................................4IV1.4设计要求.....................................................................................................51.5主要工作及流程.........................................................................................72技术背景及方案选择............................................................................................82.1锂电池的介绍.............................................................................................82.1.1锂电池简介......................................................................................82.1.2锂电池的特点..................................................................................92.1.3锂电池的充电原理........................................................................112.1.4锂电池的放电原理........................................................................122.1.5锂电池的工作过程........................................................................132.1.6锂电池保护的必要性....................................................................132.2锂电池充电器的介绍...............................................................................142.2.1锂电池充电器简介........................................................................142.2.2恒流——恒压式锂电池充电器....................................................152.3Pspice仿真软件的介绍............................................................................172.3.1Pspice的发展与现状.....................................................................172.3.2Pspice的组成.................................................................................192.3.3Pspice的分析功能.........................................................................202.3.4使用Pspice建立仿真模型...........................................................202.4实现方案的选择.......................................................................................212.4.1方案介绍........................................................................................212.4.2方案的对比与选择........................................................................222.4.3方案存在的问题............................................................................243设计实现..............................................................................................................253.1原理分析...................................................................................................253.1.1整体实现原理................................................................................25V3.1.2各部分功能的实现方法................................................................263.1.3S-8209的性能指标....................................................