工業技術研究院

技術簡介

本技術報告內容包含電堆組裝、流道板設計與電池基本性能量測，並評估電極材料及流道流場對電池性能的影響，此研究選用蛇行流道和平行流道進行實驗，除了個別對單一流道進行測試比較之外，也將平行流道和蛇行流道進行串聯，以瞭解其相互間的關係及交互的影響。 專利內容包含一種電化學液流電池單元組件及其雙極板，能提升雙極板與電極的介面接觸性以及增加電解質在流場流動的分配性。所述雙極板包括不導電部與導電部。不導電部是具有中空區域的框架結構，其中框架結構包括數個分配流道以及數個歧管孔。導電部則設置於上述中空區域並與不導電部密合而形成一容置空間，其中導電部具有數個島丘結構，以於容置空間內構成數個電解質流路，且不導電部的分配流道能引導電解質流進與流出所述導電部。

Abstract

This study focus on the effect of electrolyte flow conditions on the battery performance. This technical report describes the stack assembly, design of flow channel, and battery performance test. The effects of electrode material and fluid dynamics of flow channel on the battery performance are also evaluated. This study tests cells with serpentine channel and cell with parallel channel. In addition, the parallel channel cell is connected in series with the serpentine cell. The interaction between these cells is also studied. An electrochemical flow cell assembly and bipolar plate thereof are provided for improving the interfacial contact between the bipolar plate and the electrode and increasing the distribution and the flow ability of the electrolyte in flow field. The bipolar plate includes a nonconductive part and a conductive part. The nonconductive part is a frame structure with a hollow region, and the frame structure contains distribution channels and manifolds. The conductive part is disposed in the hollow region and fitted close to the nonconductive part so as to form a containing space. Moreover, the conductive part includes hill structures to form electrolyte flow paths in the containing space, and the electrolyte may be introduced in or out the conductive part by the distribution channels of the nonconductive part.

技術規格

大型儲能系統大部分是由許多單電池串聯或併聯所組成，故電解液在電池系統內的流動方式對電池性能的影響為研究的重點，本設計導電部具有數個島丘結構，以於容置空間內構成數個電解質流路，且不導電部的分配流道能引導電解質流進與流出所述導電部。

Technical Specification

The large energy storage systems, most of this battery is composed of many single cells connected in series or in parallel. The conductive part includes hill structures to form electrolyte flow paths in the containing space, and the electrolyte may be introduced in or out the conductive part by the distribution channels of the nonconductive part.

技術特色

本發明藉由雙極板的設計，而提升雙極板與電極的介面接觸性，同時增加電解質在流場流動的分配性，故而有效降低介面阻抗與提高流體分配性及降低電解質流動流阻，並藉此改善電荷傳遞，因此能提升電化學液流電池的電流密度、能量效率以及儲電容量。

應用範圍

儲能領域、液流電池

接受技術者具備基礎建議（設備）

none

接受技術者具備基礎建議（專業）

none

聯絡資訊