能源是地球上珍貴的資產，可分為非再生及再生能源兩種，再生能源雖然取之不盡、用之不竭，但轉換效率非常之差，根本不足以負荷人們的使用，而非再生能源像是石油、天然氣、煤等化石燃料目前還是我們用來發電的大宗，這些化石燃料要歷經數以百萬年的自然過程才能產生，且不能再補充，若不能適當的使用，能源枯竭的一天將會提早到來，大家開始注意到能源管理的議題，因此如何有效率地去管理與規劃大規模的電池系統受到各方很多的關注。

本篇論文主要是[22]的延伸，在[22]中有提到一些大規模的電池系統大致上會有五種問題需要考量:可靠度問題、效率問題、持續性問題、彈性及複雜度，他們設計與分析出來的電池系統希望能夠解決這五種問題，我們利用[22]證明出來的定理與推論，使用Matlab/Simulink來進行模擬，當一個要求(在此模擬是用電阻來代表負載)來，此電池交換網路便會根據 alternating C-transform (在演算法1) 與最大剩餘電量優先(LRCF, Largest Remaining Capacity First)機制來控制開關什麼時候要開什麼時候要關，最後可以由電池電量狀態(SOC, State of Charge)圖來看出是由哪幾個電池組來提供負載的需求電壓。

Energy is a valuable asset on the planet. It can be divided into two types. One is renewable energy and the other one is non-renewable energy. Although renewable energy is inexhaustible, the efficiency of conversion is bad that it can't afford human use. Non-renewable energy such as oil, natural gas, coal and other fossil fuels is our main way to generate electricity. These fossil fuels are be generated by natural processes after millions of years, and they can't be renew. If we can't make the most of it, the day of energy depletion will come early. Nowadays, we begin to notice the issue of energy management. Then, how to efficiently manage and plan large-scale battery systems has become more popular recently.

This paper is the extension of [22]. There are several issues in a large-scale battery systems, such as reliability, efficiency, sustainability, flexibility and complexity, that have been addressed in [22]. The battery switching network that they design and analysis hopes to solve these problems. We utilize theorem and corollary which is proved in [22] to simulate a battery switching network with Matlab/Simulink. When a request (we use a resistance to represent a load in this simulation) comes, the battery switching network will control switches to turn on or turn off at the proper time according to alternating C-transform (in algorithm 1) and Largest Remaining Capacity First (LRCF) mechanism. Finally, we can know which battery packs provide the required voltages of load by the figure of State of Charge.

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