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Bipolar plate frame and galvanic pile of flow battery

A liquid flow battery and bipolar plate technology, which is applied to battery electrodes, fuel cell parts, fuel cells, etc., can solve the problems of anolyte and catholyte leakage, self-discharge, etc., to reduce cost and improve work Efficiency, the effect of improving conversion and storage efficiency

Inactive Publication Date: 2010-09-29
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a bipolar plate frame and stack structure of a liquid flow battery, to solve the leakage problem of the anolyte and catholyte in the stack due to poor sealing, and to avoid the two electrolytes from mixing and causing self-discharge. Discharge phenomenon, improving the Coulombic efficiency of batteries and the energy efficiency of energy storage systems

Method used

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  • Bipolar plate frame and galvanic pile of flow battery
  • Bipolar plate frame and galvanic pile of flow battery
  • Bipolar plate frame and galvanic pile of flow battery

Examples

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Embodiment 1

[0093] The structure of the bipolar plate frame and stack of the flow battery according to the present invention is further described as follows.

[0094] Upper electrode frame (11): The material is polyvinyl chloride, the length is 200 mm, the width is 200 mm, the thickness is 5 mm, the sealing groove is 3 mm wide, and the depth is 1.6 mm. The diameter of the first O-ring (115A) is 146 mm. Wire diameter 2.65 mm.

[0095] Bipolar plates (2): liquid-impermeable graphite, length 200 mm, width 200 mm, thickness 4 mm

[0096] The lower electrode frame (12): the material is polyvinyl chloride, the length is 200 mm, the width is 200 mm, the thickness is 5 mm, the sealing groove is 3 mm wide, and the depth is 1.6 mm. The diameter of the second O-ring (125A) is 132 mm. Wire diameter 2.65 mm.

[0097] The upper electrode frame, the lower electrode frame, and the liquid-impermeable graphite were bonded using polyvinyl chloride plastic adhesive. The bonded bipolar plate frame is used ...

Embodiment 2

[0103]The bipolar frame structure of the flow battery according to the present invention is further described as follows.

[0104] Upper electrode frame (11): material is polyvinylidene fluoride, length 850 mm, width 450 mm, thickness 4 mm, the first sealing groove (115) is 3 mm wide and 1.6 mm deep.

[0105] Bipolar plate (2): a bipolar plate made of conductive plastic, with a length of 850 mm, a width of 450 mm, a thickness of 2 mm, and a conductivity greater than 45 S / cm.

[0106] Lower electrode frame: the material is polyvinylidene fluoride, the length is 850 mm, the width is 450 mm, and the thickness is 4 mm. The second sealing groove (125) is 3 mm wide and 1.6 mm deep.

[0107] The upper electrode frame (11), the lower electrode frame (12) and the bipolar plate (2) made of conductive plastic are welded, and the integrated bipolar plate frame is used as a part.

[0108] O-ring C (7): use a neoprene O-ring with a wire diameter of 2.65 and a diameter of 18 mm for sealing....

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Abstract

The invention relates to a bipolar plate frame and a galvanic pile of a flow battery, which belong to the field of flow batteries. The bipolar plate frame is characterized in that: labyrinth packing is formed by pressing two layers of O-shaped gasket rings which are arranged from inside to outside between an ion exchange membrane and the plate frame; an electrolyte channel and the O-shaped gasketrings are arranged on the region outside the two layers of the O-shaped gasket rings which are arranged from inside to outside; and an electrolyte groove is formed at the other side of an electrode frame opposite to the ion exchange membrane, and closely contacts the bipolar plate to form an electrolyte inlet channel or an electrolyte outlet channel. The bipolar plate frame and the galvanic pile of the flow battery have simple structures and completely solve the problem of cross leakage caused by loose sealing between anolyte and catholyte.

Description

technical field [0001] The invention relates to the technical field of electric energy conversion and storage, in particular to a technical method for manufacturing a liquid flow battery. Background technique [0002] Using renewable energy such as wind energy and solar energy to generate electricity is one of the important ways for human beings to obtain energy from nature in the future. Due to the randomness and discontinuity of the wind and solar power generation process, it is difficult to maintain a stable power output. It needs to cooperate with a certain scale of power storage devices to form a complete power supply system to ensure continuous and stable power supply. Therefore, the development of energy storage systems with high power conversion efficiency, large storage capacity, and good economic performance has become the key to the development of renewable and clean energy. Among various forms of energy storage devices, such as water storage energy storage power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M8/18H01M8/24H01M8/02H01M8/0273H01M8/0276H01M8/2465
CPCY02E60/528Y02E60/50
Inventor 王保国范永生韩洪涛徐冬清成旭光
Owner TSINGHUA UNIV
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