臺灣一年回收電池約七萬兩千公噸，經文獻及台北市政府環保局發現其中五成廢棄電池內部仍有可再利用之剩餘電量，有鑑於此現象，為了增加能源使用效率，減少不必要的浪費，本文設計出針對廢棄一次電池剩餘電量回收裝置並達到增加萃取效率之目的。此法結合串聯電池組間的放電平衡機制、自適應性脈波放電法、超級電容器自變串並聯儲能機制等三大部分。串聯電池組間的放電平衡機制為使其達到同步放電，減少電池間因效能差異過大，導致放電不完全現象；自適應性脈波放電法係利用脈波放電法本身具有週期性暫態靜置時間，可供電池內部電解液擴散更平衡之優勢，提高廢棄電池放電量，並在電池組放電時，根據平均放電電流值，選擇最佳脈波頻率及佔空比，用於優化脈波放電法；超級電容器自變串並聯儲能機制係利用電路切換方式，可有效提高最終能量轉換效率、減少放電時間。本文利用全新一次電池及廢棄一次電池做相關實驗比較，經一次電池剩餘電量回收實驗結果得知，剩餘電量萃取效率約33.5%~46.4%，此數值可能會受限於廢棄一次電池的現況而有所不同。本裝置可供回收廠商於進行濕式裂解用以分解電池材料前回收廢棄電池內部電量，對於回收廠商而言，可獲取額外電能，並且不會對回收材料本身價值有所影響。

There were nearly 72,000 tons of disposed batteries per year in Taiwan. According to the literature and environmental protection department of Taipei City Government, 50% of disposed batteries still have residual energy. In view of this situation, for the purpose of increasing energy efficiency and reducing unnecessary waste, this thesis designs a circuit to extract residual energy from disposed primary batteries and utilizes a discharging method to increase efficiency. The method used in this thesis includes three major parts: discharge balance mechanism between series batteries, self-adaptive pulse discharge method, and supercapacitor self-vary series-parallel energy storage mechanism. The discharge balance mechanism between series primary batteries is used to achieve synchronous discharge and avoids incomplete discharging duo to different primary battery’s conditions. The self-adaptive pulse discharge is used for different frequencies of pulse discharge to provide primary batteries some periodic rest time, which can help electrolyte in the primary batteries reach equilibrium and can further increase the amount of extracted energy. Also, the best pulse frequency and duty cycle were selected based on average discharge current when batteries were discharged for optimizing the pulse discharge method. The supercapacitor self-vary series and parallel energy storage mechanism is used for switching the circuit to effectively improve energy conversion efficiency and shorten discharge time. This thesis uses new primary batteries and disposed primary batteries to conduct the same experiment in order to make experimental comparisons. Finally, the device for extracting residual energy from disposed primary batteries was implemented with high efficiency. According to experimental results, the extracting efficiency was about 33.5%-46.4%. This value may be changed by the condition of discarded primary batteries. This device can be used by recycling manufacturers to extract residual energy from wasted batteries before decomposing batteries for materials. For recycling manufacturers, additional energy can be obtained without affecting the value of recycled materials.

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