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研究生： Abdullah Sani
Abdullah - Sani
論文名稱： 串聯電池組之切換電容式電量平衡電路
Switched-Capacitor Charge Equalization Circuit for Series-Connected Batteries
指導教授： 邱煌仁
Huang-Jen Chiu
口試委員: 林長華
Chang-Hua Lin
謝耀慶
Yao-Ching Hsieh
林景源
Jing-Yuan Lin
學位類別： 碩士
Master
系所名稱： 電資學院 - 電子工程系
Department of Electronic and Computer Engineering
論文出版年： 2016
畢業學年度： 104
語文別： 英文
論文頁數： 66
中文關鍵詞： 串聯電池組 、切換電容 、電量平衡電路 、電池監測
外文關鍵詞： series-connected batteries, switched-capacitor, charge-equalization circuit, battery monitoring
相關次數： 點閱：399  下載：67 
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    • 摘 要

    電池管理系統對於電動車輛，或是其他運用電池作為能量來源的裝置均是非常重要的部份。對於電池所面臨的問題中，電量不平衡是個經常被討論的議題，尤其是對串聯電池組而言。電量不平衡會傷害電池組的儲電能力，且會縮減電池的整體壽命。為了避免電池芯間的電壓不一致，許多文獻都提出各種電量平衡系統。本文提出一種主動電量平衡系統，此系統是由切換式電容所構成的平衡裝置。此系統會使兩個相臨的電池或電池組對一個暫存電容放電；其後再根據電量多寡，將電量再釋放回其中一個電池，藉此來達成電量的平衡。此方法的優點在於電量平衡的電流較大，因而能加速平衡的進行。此外，藉由電壓監測裝置全程的幫助，得知電池電量情形，減少無效的電量傳輸，提高平衡電路的效率。

    Abstract

    Battery management system is an important part in electric vehicles and other devices that utilize the batteries as a power source. A very vital problem countered in the battery is imbalance charge, particularly for series-connected battery packs. The voltage imbalance decreases the total storage capacity and the entire life cycle of batteries. In order to prevent the voltage differences among cells, cell balancing system for charge equalization are proposed. In this paper proposes an active balancing system based-on switched-capacitor charge equalization for series-connected batteries. This method makes two battery cells to charge the buffer capacitor and then the capacitor will transfer the charge to one of two battery cells. By this way, the charge-balancing can be accelerated. Besides, in order to achieve better efficiency, the monitor system is applied to check and detect the voltages of battery cells during the whole time. By this monitoring, useless charge transferences can be minimized.

    Table of Contents 摘要 I ABSTRACT II TABLE OF CONTENTS III FIGURE INDEX V TABLE INDEX VII CHAPTER 1 BACKGROUND AND OBJECTIVES 1 1.1 BACKGROUND AND THESIS OBJECTIVES 1 1.2 THESIS ORGANIZATION 2 CHAPTER 2 LITERATURE REVIEWS 3 2.1 TYPE OF LITHIUM-ION BATTERY 3 2.1.1 Lithium Cobalt Oxide (LiCoO2) 3 2.1.2 Lithium Manganese Oxide (LiMn2O4) 4 2.1.3 Lithium Iron Phosphate (LiFeO4) 4 2.2 LITHIUM-ION BATTERY CAPACITY 7 2.3 CHARGING AND DISCHARGING LITHIUM-ION BATTERY 7 2.4 INTRODUCTION TO BATTERY MANAGEMENT SYSTEM (BMS) 9 2.5 BATTERY MONITOR STACK LTC6803-4 10 2.5.1 IC Module Function Block and Operation 11 2.5.2 Serial Peripheral Interface (SPI) 12 2.5.3 Advantages of LTC6803-4 14 2.6 SERIES RLC CIRCUIT 15 2.7 CAPACITIVE SHUTTLING BALANCING METHOD 20 2.71 Switched Capacitor 21 2.72 Double Tiered Capacitor 21 2.73 Single Switched Capacitor 22 2.74 Modularization Switched Capacitor 23 CHAPTER 3 DESIGN AND SIMULATION 24 3.1 DESIGN OF SWITCHED-CAPACITOR CHARGE EQUALIZATION TOPOLOGY 24 3.2 DESIGN OF BATTERY SELECTOR SWITCH 30 3.3 DESIGN OF BALANCING ALGORITHM 33 3.4 SIMULATION OF PROPOSED TOPOLOGY 35 CHAPTER 4 HARDWARE IMPLEMENTATION AND EXPERIMENTAL RESULTS 40 4.1 HARDWARE DESIGN AND IMPLEMENTATION 40 4.2 EXPERIMENTAL RESULTS 44 CHAPTER 5 CONCLUSIONS AND FUTURE WORKS 54 5.1 CONCLUSIONS 54 5.2 FUTURE WORKS 54 REFERENCES 55

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