Electrode module for flow battery, preparation method of electrode module and battery stack containing electrode module

An electrode assembly and flow battery technology, applied in the field of battery stacks, can solve the problems of increased electrolyte flow resistance, increased system pump loss, reduced carbon felt porosity, etc., to improve energy efficiency, reduce contact resistance, Reduces the effect of sealing parts

Inactive Publication Date: 2015-11-11
中国东方电气集团有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, compression will reduce the internal porosity of the carbon felt, resulting in increased electrolyte flow resistance and greatly increased system pump loss; The ga

Method used

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  • Electrode module for flow battery, preparation method of electrode module and battery stack containing electrode module
  • Electrode module for flow battery, preparation method of electrode module and battery stack containing electrode module
  • Electrode module for flow battery, preparation method of electrode module and battery stack containing electrode module

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Embodiment approach

[0040]According to a typical embodiment of the present invention, the positive electrode porous electrode, the electrolyte separator and the negative electrode porous electrode are combined together by bonding, hot pressing or resin impregnation to form the first component, and the positive electrode flow frame is provided with a The first cavity of the positive electrode porous electrode, the second cavity for embedding the negative electrode porous electrode is arranged on the negative electrode flow frame, the positive electrode flow frame, the first part and the negative electrode flow frame are buckled together, the positive electrode flow frame and The negative flow frame is combined by bonding, hot pressing or laser welding. The combination of the positive porous electrode, the electrolyte separator and the negative porous electrode is just an example, and can also be combined in other ways in the art.

[0041] According to a typical embodiment of the present invention,...

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Abstract

The invention discloses an electrode module for a flow battery, a preparation method of the electrode module and a battery stack containing the electrode module. The electrode module comprises a positive flow frame, a positive porous electrode, an electrolyte partition plate, a negative flow frame and a negative porous electrode, wherein the positive flow frame, the positive porous electrode, the electrolyte partition plate, the negative flow frame and the negative porous electrode are integrated. With the adoption of the technical scheme disclosed by the invention and the integrated design of the positive flow frame, the positive porous electrode, the electrolyte partition plate, the negative flow frame and the negative porous electrode, contact resistance inside the flow battery is reduced, the porous electrodes are prevented from being excessively compressed, the sealing part of the battery pile is reduced, and the energy efficiency of a flow battery system and the sealing reliability of the battery pile are improved.

Description

technical field [0001] The present invention relates to the technical field of flow batteries, in particular, to an electrode assembly for a flow battery, a preparation method thereof, and a battery stack comprising the same. Background technique [0002] Flow battery is a new type of electrochemical energy storage system. Compared with other energy storage technologies, flow battery has the advantages of large power, large capacity, high energy conversion efficiency, long service life, high safety, and environmental protection. Large-scale energy storage systems supporting photovoltaic power generation and wind power generation, smart grid peak regulation, communication base stations, and distributed power sources have broad application prospects. [0003] Existing liquid flow battery stack structures such as figure 1 As shown, 10' is a bipolar plate, 20' is a positive electrode flow frame, 30' is a positive electrode porous electrode, 40' is an ion exchange membrane, 50' ...

Claims

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Application Information

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IPC IPC(8): H01M4/86H01M8/02
CPCH01M4/8605H01M8/0273Y02E60/50
Inventor 高艳胡杨月周正刘佳燚
Owner 中国东方电气集团有限公司
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