Patent ID: 10615432

Abstract:
A cell frame includes a bipolar plate in contact with an electrode constituting a battery cell; and a frame body surrounding a periphery of the bipolar plate, wherein the frame body includes a liquid supply manifold through which an electrolyte is supplied into the battery cell, the bipolar plate includes, in a surface facing the electrode, a plurality of main groove portions that are arranged adjacent to one another and through which the electrolyte flows, at least one of the frame body and the bipolar plate includes a supply flow directing portion configured to distribute, in a direction in which the main groove portions are arranged adjacent to one another, the electrolyte supplied through the liquid supply manifold, to supply the electrolyte to each of the main groove portions, and each of widths Wi of electrolyte inlets of the main groove portions, and a width Wr of the supply flow directing portion in a direction orthogonal to the direction in which the main groove portions are arranged adjacent to one another, satisfy a width ratio Wr/Wi of 1.5 or more and 10 or less.