對可攜式電子用品而言，鋰離子電池因其擁有許多優點，例如電池電壓準位高、污染少、低自放電率和高能量密度，故成為是二次電池中最受歡迎的產品。除了消費電子領域之外，鋰離子電池於軍事、電動車和太空應用上亦趨於流行。然而在鋰電池的應用上也有部分限制，包括低溫限制、過充電的潛在危險和過度放電的潛在破壞性。因此電池管理系統需要確保鋰離子電池最高規格的效果和安全性。
在此論文中，提出了串聯鋰離子電池組電池管理系統，此電池管理系統可以提供電池組參數的準確測量值，包括一電池組電流、各個電池電壓和一組電池溫度。為了提供電池參數的即時顯示和資料紀錄，本文亦發展了容易使用的圖控使用者介面。所提出之電池管理系統藉著使用串列通訊和圖控使用者介面進行通訊。在這本論文中，電池管理系統使用Microchip公司出產的微控制器當作控制中心，圖控使用者介面是使用Microsoft公司的Visual Basic做研發平台。本文針對電池管理系統軟硬體作詳細敘述，也提供實驗結果以驗證電池管理系統的正確性。

Lithium-ion (Li-ion) batteries are one of the most popular types of rechargeable battery for portable electronics because they boast the advantages such as no memory effect, high working cell voltage, low environmental pollution, low self-discharge rate and high energy density. Beyond consumer electronics, Li-ion batteries are also growing in popularity for military, electric vehicle, and aerospace applications. However, there are some limitations on the usage of Li-ion batteries including low temperature tolerance, potential danger of overcharge, and potential damage of over discharge. Therefore, a battery management system (BMS) is required to guarantee the maximum performance and safety.
In this thesis, a BMS for series connected Li-ion battery pack is proposed. The presented BMS can provide accurate measurement of battery pack parameter including pack current, individual cell voltage and individual cell temperature. In order to provide the real-time display and data logging of the battery parameters, a user-friendly graphical user interface (GUI) is also developed. The presented BMS communicate with the PC-based GUI using UART protocols. In this thesis, the BMS is implemented using dsPIC digital signal controller (DSC) from Microchip Corp. as the central controller, and the GUI is developed using Visual Basic from Microsoft Corp. Detailed description of the hardware and software of the proposed BMS will be provided, and experimental results will also be provided to verify the correctness of the proposed BMS

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