木炭蓄電器に用いる過電圧防止回路

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タイトル別名
  • Overvoltage Prevention Circuit for Charcoal EDLC
  • モクタン　チクデンキ　ニ　モチイル　カデンアツ　ボウシ　カイロ

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説明

An electric double layer capacitor (EDLC) is a capacitor that uses an electric double layer generated at the interface between an electrode and an electrolyte. The EDLC has lower energy density than secondary batteries, but has features such as rapid charge and discharge and reduced deterioration due to charge and discharge. The authors are developing a charcoal EDLC that uses activated carbon activated by charcoal and a water electrolyte. To increase the capacity, it is necessary to connect EDLC cells (cells) in series and parallel. In the case of series connection, if the shared voltage is not uniform, the electrolysis voltage of the water electrolyte (1.23 V) may be exceeded, and the cell may deteriorate. When cells are connected in series, an overvoltage prevention circuit is required so as not to exceed a predetermined shared voltage (1.0 V) even if the electrostatic capacity is different. It is reported the results of a prototype of an overvoltage prevention circuit for the charcoal EDLC.

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