US 2019/0157699 A1Published application

Cell frame and redox flow battery

AssigneeSumitomo Electric Industries, Ltd.

InventorsTakashi KANNO, Katsuya YAMANISHI, Takefumi ITO, Masahiro KUWABARA, Kiyoaki MORIUCHI, Hideyuki YAMAGUCHI, Hayato FUJITA, Kousuke SHIRAKI, Kiyoaki HAYASHI

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Abstract

The battery cell for a flow battery includes a cell frame including a frame including a through-window and a manifold serving as an electrolyte flow path, and a bipolar plate blocking the through-window; a positive electrode disposed on one surface side of the bipolar plate; and a negative electrode disposed on another surface side of the bipolar plate. In this battery cell, in the frame, a thickness of a portion in which the manifold is formed is defined as Ft; in the bipolar plate, a thickness of a portion blocking the through-window is defined as Bt; in the positive electrode, a thickness of a portion facing the bipolar plate is defined as Pt; in the negative electrode, a thickness of a portion facing the bipolar plate is defined as Nt; and these thicknesses satisfy Ft≥4 mm, Bt≥Ft−3.0 mm, Pt≤1.5 mm, and Nt≤1.5 mm.

Claims16

Dependent claims

A cell frame for a flow battery comprising:

a frame including a through-window and a manifold serving as an electrolyte flow path, a portion of the frame in which the manifold is formed having a first side and a second side opposite to the first side, and
a bipolar plate blocking the through-window, the bipolar plate having a first side corresponding to the first side of the frame, and a second side opposite the first side of the bipolar plate and corresponding to the second side of the frame,
wherein a thickness of the portion of the frame in which the manifold is formed is greater than or equal to 4 mm;
wherein a thickness of a portion of the bipolar plate blocking the through-window is greater than or equal to the thickness of the portion of the frame less 3.0 mm;
wherein a distance from the first side of the portion of the frame to the first side of the bipolar plate is less than or equal to 1.5 mm;
and
wherein a distance from the second side of the portion of the frame to the second side of the bipolar plate is less than or equal to 1.5 mm.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/250,682Filed 17 Jan 2019
Priority: 3 Feb 2017
Published: 23 May 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H01M 8/18
Fuel cells; Manufacture thereof: regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
H01M 8/02
Fuel cells; Manufacture thereof: details
H01M 8/0271
Details: sealing or supporting means around electrodes, matrices or membranes
H01M 8/0273
Sealing or supporting means around electrodes, matrices or membranes: with sealing or supporting means in the form of a frame

Family

Application15/501,502Continuation · filed 3 Feb 2017
Application16/250,682Continuation
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From the US filing history. Foreign family members aren’t listed.