Frame body, cell frame, cell stack, and redox flow battery

Patent metadata

Field	Value
Publication number	US-10224563-B2
Application number	US-201615549104-A
Country	US
Kind code	B2
Filing date	Oct 5, 2016
Priority date	Oct 5, 2016
Publication date	Mar 5, 2019
Grant date	Mar 5, 2019

Abstract

A frame body that is a part of a flat cell frame for a cell stack of a redox flow battery, and that supports, on an outer peripheral side of a bipolar plate of the cell frame, the bipolar plate,
the frame body including a frame-facing surface that is to face, when a plurality of the cell frames are stacked, a frame body of another cell frame that is adjacent to the cell frame in a stacking direction, wherein the frame-facing surface has a surface roughness Ra of 0.03 μm or more and 3.2 μm or less.

First claim

The invention claimed is:

1. A frame body of a redox flow battery, comprising: a frame body portion supporting a bipolar plate of a cell frame on an outer peripheral side of the bipolar plate,
the frame body portion having a frame-contacting surface that is to face and physically contact, when a plurality of the cell frames are stacked, a frame body of another cell frame that is adjacent to the cell frame in a stacking direction,
wherein the frame-contacting surface has a surface roughness Ra of 0.03 μm or more and 3.2 μm or less.

2. The frame body according to claim 1 , comprising a sealing groove into which a loop-shaped sealing member is inserted,
wherein the sealing groove has an inner peripheral surface having a surface roughness Ra of 0.03 μm or more and 3.2 μm or less.

3. A cell frame comprising the frame body according to claim 1 , and a bipolar plate supported by the frame body.

4. A cell stack comprising a plurality of cell frames stacked, the cell stack being used for a redox flow battery,
wherein the cell frames include the cell frame according to claim 3 .

5. The cell stack according to claim 4 , comprising a loop-shaped sealing member disposed between frame bodies of a pair of the cell frames adjacent to each other in the stacking direction.

6. A redox flow battery comprising a cell stack, a positive electrode electrolyte tank, and a negative electrode electrolyte tank,
wherein the cell stack is the cell stack according to claim 4 .

Assignees

• Sumitomo Electric Industries

Inventors

• Fujita Hayato
• Kanno Takashi
• Motoi Kenji
• Yamana Takeshi

Classifications

• H01M8/188 Primary

  by recharging of redox couples containing fluids; Redox flow type batteries · CPC title

• H01M4/86

  Inert electrodes with catalytic activity, e.g. for fuel cells · CPC title

• H01M8/2465

  Details of groupings of fuel cells · CPC title

• H01M2004/8684

  Negative electrodes · CPC title

• H01M8/0273 Primary

  with sealing or supporting means in the form of a frame · CPC title