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

Patent metadata

Field	Value
Publication number	US-2018108930-A1
Application number	US-201715570066-A
Country	US
Kind code	A1
Filing date	Feb 28, 2017
Priority date	Mar 29, 2016
Publication date	Apr 19, 2018
Grant date	—

Abstract

A frame body for a redox flow battery is provided with a window. The expressions A>C, B>D, and (B/A)≥0.2 are satisfied, where A represents the length of a long side of a rectangle that envelops the window, B represents the width of a horizontal frame corresponding to the long side, C represents the length of a short side of the rectangle, and D represents the width of a vertical frame corresponding to the short side.

First claim

1 . A frame body for a redox flow battery comprising a window,
wherein the expressions A>C, B>D, and (B/A)≥0.2 are satisfied, where A represents the length of a long side of a rectangle that envelops the window, B represents the width of a horizontal frame of the frame body corresponding to the long side, C represents the length of a short side of the rectangle, and D represents the width of a vertical frame of the frame body corresponding to the short side.

2 . The frame body for a redox flow battery according to claim 1 , wherein the expression (D/C)≥0.2 is satisfied.

3 . The frame body for a redox flow battery according to claim 1 , wherein the frame body for a redox flow battery and the window are each rectangular, and the expression L>H is satisfied, where L represents the length of the long side including the horizontal frame in the frame body for a redox flow battery, and H represents the height of the short side including the vertical frame.

4 . The frame body for a redox flow battery according to claim 1 , wherein the horizontal frame is provided with through holes into which fastening shafts are inserted.

5 . A redox flow battery comprising the frame body for a redox flow battery according to claim 1 .

6 . A redox flow battery comprising:
a layered body in which the frame body for a redox flow battery according to claim 1 and a bipolar plate disposed inside the window, a positive electrode, a membrane, and a negative electrode are stacked in this order a plurality of times, and the stacked state is maintained by fastening pressure applied in the stacking direction; and a positive electrode supply/drainage plate and a negative electrode supply/drainage plate which are stacked together with the layered body, wherein an outer periphery of the horizontal frame of the frame body in the layered body protrudes from an outer periphery of the positive electrode supply/drainage plate and an outer periphery of the negative electrode supply/drainage plate.

7 . A cell stack comprising the frame body for a redox flow battery according to claim 1 .

8 . A cell stack comprising:
a layered body in which the frame body for a redox flow battery according to claim 1 and a bipolar plate disposed inside the window, a positive electrode, a membrane, and a negative electrode are stacked in this order a plurality of times, and the stacked state is maintained by fastening pressure applied in the stacking direction; and a positive electrode supply/drainage plate and a negative electrode supply/drainage plate which are stacked together with the layered body, wherein an outer periphery of the horizontal frame of the frame body in the layered body protrudes from an outer periphery of the positive electrode supply/drainage plate and an outer periphery of the negative electrode supply/drainage plate.

Assignees

• Sumitomo Electric Industries

Inventors

• Kuwabara Masahiro
• Toyoda Haruhisa
• Kanno Takashi
• Ito Takefumi
• Yamaguchi Hideyuki
• Fujita Hayato
• Shiraki Kousuke
• Hayashi Kiyoaki

Classifications

• H01M8/188 Primary

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

• H01M8/242

  comprising framed electrodes or intermediary frame-like gaskets (H01M8/2425, H01M8/244 take precedence) · CPC title

• H01M8/2455

  with liquid, solid or electrolyte-charged reactants · CPC title

• H01M8/2483

  characterised by internal manifolds · CPC title

• H01M8/04276

  Arrangements for managing the electrolyte stream, e.g. heat exchange · CPC title