本論文旨在應用數位控制實現串聯電池之電量平衡，欲發展應用於大容量鋰電池所建置的高壓串聯電池組的電量平衡系統。本系統囊括硬體、韌體、平衡策略、週邊保護機制。硬體部分採用雙向返馳式轉換器作為電量平衡電路，欲實現任意電池與儲能槽間雙方能量傳遞，以及縮短平衡時間的目的。韌體部分，採用LPC122x系列的32位元微處理器作為數位控制器，且搭配BMS IC進行電池資訊取樣的功能。並以CAN Bus通訊網路進行模組通訊，實現系統內各個模組的控制，再輔以平衡策略與週邊保護機制，使系統能穩定且快速的完成電量平衡工作。本文最終實現一組具備電池對電池直接平衡能力的高電壓串聯電池組平衡系統，並經過實驗結果驗證，本文所提出的電量平衡系統能夠準確的達成22組電池組靜態電量平衡的結果，使串聯電池組中的電池組電壓誤差於平衡後達到小於100 mV的範圍內。並且於極端電量誤差的情況下，也能穩定的達成電量平衡。而雙向返馳式轉換器充電狀態時，於滿載的情況下對13.74 V的電池組充電，最高效率可達到86.2 %。

This thesis aims at “the realization of charge equalization on series-connected battery modules by digital controller.” A charge equalization system on high-voltage high-capacity series-connected lithium-iron batteries is developed. Including hardware, firmware, equalization strategy and protection peripherals are implemented in the system. For the hardware, a bidirectional flyback converter is adopted as the charge equalization circuit, to achieve the goal of fast equalization and high balancing current. For the firmware, LPC122x series 32-bit microcontrollers are used as the digital controllers, and a battery management IC is used to sense the battery information. CAN bus provides the communication network for the modules in the system. A well-defined equalization strategy and protection peripherals collaborate to achieve charge equalization and fast, equalization system with cell-to-cell charge equalization capability. Experimental result shows that the charge equalization system could achieve cell-to-cell charge equalization between 22 battery modules accurately, making the voltage difference be less than 100 mV after equalization. The system could also achieve equalization under extreme conditions. Bidirectional flyback converter could reach the maximum efficiency of 86.2 % while charging the 13.74 V battery module under full load condition.

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