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起電力と直列接続

1800
  • Alessandro Volta
Voltaic pile demonstrating electromotive force in series connection with zinc and copper cells.

(画像はイメージです)

の Voltaic pile 電気化学セルを直列に接続することで電圧を加える原理を確立した。各亜鉛-銅ペア、つまりセルは、特性電圧を生成する。 起電力 (EMF) of approximately 0.76 volts. By physically stacking these cells, Volta demonstrated that the total voltage across the pile is the sum of the individual EMFs of each cell, as described by [latex]V_{total} = n \times V_{cell}[/latex].

The concept of electromotive force (EMF) represents the total potential energy per unit of charge available from an energy source, such as a battery. The Voltaic pile was the first device to provide a steady EMF. Volta’s crucial insight was that this force could be amplified by arranging the source’s components in a specific, repeatable sequence. In the pile, the negative terminal of one cell (the zinc plate) is in direct contact with the positive terminal of the next cell (the copper plate), with the electrolyte-soaked separator completing the circuit within each cell.

This series connection forces the current to flow through each cell sequentially, and the potential difference of each cell is added to the total. This simple additive principle was revolutionary. It allowed scientists to move beyond the high-voltage but low-current, instantaneous discharges of static electricity devices like the Leyden jar. For the first time, they could create powerful and sustained electrical pressures. This capability was immediately exploited by chemists like Humphry Davy, who constructed enormous piles with hundreds of cells to achieve the voltages necessary to decompose stable chemical compounds via electrolysis, leading to the discovery of elements like sodium and potassium.

UNESCO Nomenclature: 2205
電気と磁気

タイプ

物理原理

混乱

基礎

使用法

広く普及している

前駆物質

  • 静電気の研究から得られる電位または「張力」の概念的理解
  • ライデン瓶を接続して電荷や電圧を増加させる実験
  • ルイージ・ガルヴァーニの実験は、特定の物質の組み合わせに固有の電気力が存在することを示唆していた。

アプリケーション

  • ノートパソコン、電動工具、電気自動車に搭載されている最新のバッテリーパック
  • あらゆる形態の電子機器における直列回路
  • 高電圧直流電源
  • 回路解析におけるキルヒホッフの電圧法則の基礎
  • マルクス 高電圧パルスを生成するための発生器

特許:

NA

潜在的なイノベーションのアイデア

  • modular, self-reconfiguring battery systems that adjust their voltage by changing internal series/parallel connections
  • 3d-printed batteries with integrated series connections in complex shapes
  • transparent, series-connected thin-film cells for power-generating windows
  • bio-electric organs mimicked in synthetic materials for high-voltage generation
  • origami-inspired foldable battery sheets that increase voltage as they are folded
  • thermally activated series connections for single-use high-voltage applications
  • cascaded energy harvesting devices that sum small voltages from multiple sources
  • smart battery packs that can bypass faulty cells in a series string to maintain operation
関連: 起電力, EMF, voltage, series circuit, battery pack, potential difference, Alessandro Volta, galvanic cell.

歴史的背景

起電力と直列接続

1788
1800
1800
1800
1800
1802
1802
1788
1800
1800
1800
1800
1801
1802
1808

(日付が不明または関連性がない場合、例えば「流体力学」などでは、その注目すべき出現時期の概算値が提示されます。)

10年目 周年

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