【正文】 .......................................................... 49 目 錄 V 電池管理系統(tǒng)標(biāo)定裝 置 ........................................................................ 51 電池管理系統(tǒng)人工標(biāo)定方法 ........................................................... 51 電池管理系統(tǒng)自動(dòng)標(biāo)定裝置 ........................................................... 52 本章小結(jié) ................................................................................................ 53 第 4 章 電池系統(tǒng)集成及實(shí)驗(yàn)研究 ................................................................. 55 實(shí)驗(yàn)環(huán)境介紹 ........................................................................................ 55 電池性能試驗(yàn) ........................................................................................ 57 開路電壓試驗(yàn) ................................................................................... 57 電池發(fā)熱試驗(yàn) ................................................................................... 58 電池系統(tǒng)集成 ........................................................................................ 59 單體電壓均衡 ................................................................................... 59 電池系統(tǒng)的集成 ............................................................................... 60 系統(tǒng)運(yùn)行實(shí)驗(yàn)及結(jié)果分析 .................................................................... 62 仿真模型的改進(jìn) .................................................................................... 65 本章小結(jié) ................................................................................................ 70 第 5 章 結(jié)論與展望 ......................................................................................... 72 結(jié)論 ........................................................................................................ 72 未來工作展望 ........................................................................................ 72 參考文獻(xiàn) ............................................................................................................. 74 致 謝 ................................................................................................................. 79 聲 明 ................................................................................................................. 80 個(gè)人簡(jiǎn)歷、在學(xué)期間發(fā)表的 學(xué)術(shù)論文與研究成果 ......................................... 81 主要符號(hào)對(duì)照表 VI 主要符號(hào)對(duì)照表 A 傳熱面積 h 表面?zhèn)鳠嵯禂?shù) L 串聯(lián)材料的厚度 p 流體壓強(qiáng) Pv 發(fā)熱功率 Q 熱流量 Q1 電化學(xué)反應(yīng)的發(fā)熱量 QJ 焦耳熱 Qp 極化熱 Qr 電池總反應(yīng)熱 Re 電池歐姆內(nèi)阻 Ri 電池總內(nèi)阻 ST 內(nèi)熱源發(fā)熱與機(jī)械能轉(zhuǎn)換的內(nèi)能之和 t 時(shí)間 T 熱力學(xué)溫度 Tf 流體溫度 Tw 物體表面溫度 V 電壓 V0 冷卻空氣流量 λ 導(dǎo)熱系數(shù) μ 動(dòng)力粘度 ρ 密度 第 1 章 引言 1 第 1章 引言 課題背景及意義 能源短缺、氣候變化和 環(huán)境 污染是 人類社會(huì)發(fā)展中的三大難題，也是汽車行業(yè) 面臨 的巨大挑戰(zhàn)。 Liion Battery。 關(guān)鍵詞： 電動(dòng)汽車 ； 電池組集成技術(shù) ； 鋰離子 電池 ； 電池管理系統(tǒng) ；電池 熱管理系統(tǒng) Abstract II Abstract Developing electric vehicle is an effective way to solve the energy and environment problems. The battery is a key ponent of the electric vehicle, and is also a bottleneck of the electric vehicle development. Presently， batteries used in vehicles can not pletely meet the requirements of electric vehicles. There are some problems in battery life, maintenance costs, safety and so on. Integration technologies of batteries are of great significance for solving these problems. Based on 180Ah Liion battery, the thesis studies integration technologies of batteries. Using the battery tests, the characteristics of the 180Ah battery are presented. Based on the results, the 3D thermal model of the battery is built. With the parison of mon cooling styles and analyses of battery features, parallel cooling style is used in thermal management system. Based on putational fluid dynamics, the simulation model is built in FLUENT and the simulation study is developed. Aiming at disaccord temperature distribution of the batteries reflected by the simulation results, a structural optimization method is proposed. The further simulation results show that the optimization method can significantly improves the temperature distribution of parallel cooling system. Distributed structure is employed in battery management system. It consists of a main control unit and several data acquisition units. Internal and external munication is realized by CAN work in battery management system. Main control unit is the core of the system, collecting the battery pack status parameters. LTC68034 chips are used in data acquisition units to collect cell voltage and keep cells balanced. To improve operation safeties of battery pack, an electrical system is presented. Finally, aiming at the problem of low efficiency of artificial calibration in battery management system, automatic calibration is put forward to improve the efficiency of calibration. Based on the previous studies, the voltage balance, the temperature sensor location and sealing structure are studied and the battery system is integrated. Because the actual temperature distribution of battery does not agree with the simulation results, a further study about the battery system is developed. The results show that the battery electrodes Abstract III generate heat seriously and the temperature distribution of battery is greatly influenced. According to the results, the simulation model is modified and the precision is improved. Finally, the experiment results agree well with the simulation results. Key words: Electric Vehicle。 研究結(jié)果表明，電池電極部分發(fā)熱嚴(yán)重，對(duì)電池組溫度分布影響很大。 最后 針對(duì)電池管理系統(tǒng)人工標(biāo)定效率低下的問題，提出了 一種 自動(dòng)標(biāo)定的方案，提高了標(biāo)定效率。主控單元是系統(tǒng)的核心，采集電池組狀態(tài)參數(shù)；數(shù)據(jù)采集單元采用 LTC68034 芯片進(jìn)行單體電壓采集和單體電壓均衡。 電池管理系統(tǒng)采用分布式結(jié)構(gòu)，由一個(gè)主控單元和多個(gè)數(shù)據(jù)采集單元組成。這種方案 可以 使電池組內(nèi)單體溫度分布達(dá)到較好的一致性 。之后 基于計(jì)算流體動(dòng)力學(xué)，建立 了熱管理 系統(tǒng)的仿真模型， 在 FLUENT 軟件中進(jìn)行了仿真研究 。在此基礎(chǔ)上，建立了電池的三維熱模型。本文基于某種 180Ah 鋰離子電池， 開展了電池組集成技術(shù)的研究 。目前車用電池不能完全滿足電動(dòng)汽車的功能要求，存在使用壽命短、維護(hù)成本高、安全性差等問題。 （保密的論文在解密后遵守此規(guī)定） 作者簽名： 導(dǎo)師簽名： 日 期： 日 期： 摘 要 I 摘 要 發(fā)展電動(dòng)汽車 技術(shù) 是解決能源、環(huán)境問