Large power redox flow cell device electric pile structure

A technology for flow batteries and stacks, which is applied in fuel cell components, fuel cells, and regenerative fuel cells, etc., can solve the problems of large-scale application of stacks, difficult processing and assembly, poor flow performance, etc. Discharge loss, improving assembly efficiency and effectiveness, improving sealing performance

Inactive Publication Date: 2008-06-04
PRUDENT ENERGY
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Problems solved by technology

However, the above-mentioned stacks still have problems of complex structure, difficult processing and assembly, poor fl

Method used

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  • Large power redox flow cell device electric pile structure
  • Large power redox flow cell device electric pile structure
  • Large power redox flow cell device electric pile structure

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Experimental program
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Embodiment Construction

[0016] According to the structure design of this patent, an all-vanadium redox flow battery stack was built, and the charging and discharging experiments were carried out. Using V4+ / V5+ and V3+ / V2+ vanadium ions as the anode and cathode active materials of the redox flow battery respectively, the half-cell electrochemical reaction in the stack is as follows.

[0017] Positive reaction

[0018]

[0019] Negative reaction

[0020] E. 0 =-0.26V

[0021] The all-vanadium redox flow battery stack is composed of four single cells in series, the effective electrode area is 200×270mm, and the positive and negative electrolytes are 800ml of 1.0mol / L V4++2mol / L H2SO4 and 1.0mol / L V3 respectively ++2mol / L H2SO4 aqueous solution, charge and discharge experiments were carried out at an electrolyte circulation flow rate of 50L / h, and the stack performance of the redox flow battery was measured at room temperature. Figure 4 is the curve of charging and discharging current and volta...

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Abstract

The invention relates to a technical field of electric pile manufacture for a flow battery. A special elastic plate adopted in the frame of every layer of the electric pile increases the sealing performance of every layer; a design proposal that an embedded guide plate is adopted in a main runner of electrolyte increases the service efficiency of battery materials like septum and electrode; a feeding method that multiple path main runners are parallel and horizontal is realized by adopting a drainage distribution plywood to equate the pressure at an entrance and an exit of electrolyte in different electrode cavities and equate the pressure of electrolyte at different entrances and exits in the same electrode cavity; electrolyte flows evenly on the surface of the electrode by adopting the structure of diversion trunking; the maximized area of support septum avoids cross inleakage of the anode and cathode electrolyte of the septum at the entrance and reduces the loss of self discharge; efficiency of assembling is increased by adopting a interlock location frame to locate the multilayer battery structure. The electric pile provided by the invention has the advantages of simple structure, convenient manufacture and installation, reliable sealing, even flowing and stable operation of the electrolyte.

Description

technical field [0001] The patent of the present invention relates to the technical field of flow battery processing, in particular to the field of processing and manufacturing of flow battery stacks. Background technique [0002] Electric energy is an indispensable secondary energy in human life and production in modern society. With the development of social economy, people's demand for electricity is getting higher and higher. According to the analysis report "Analysis and Forecast of National Power Supply and Demand and Economic Operation Situation in the Third Quarter of 2005" issued by the China Electricity Council: In 2006, the growth rate of national social electricity consumption was about 11%, and the electricity consumption was about 2.73 trillion kwh . The power gap is mainly concentrated in North China and South China. In East China, the reserve is low in summer and in winter, it is basically balanced. In Central China and Northeast China, it is basically bala...

Claims

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Application Information

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IPC IPC(8): H01M8/24H01M8/18H01M8/02H01M8/0258H01M8/0273
CPCY02E60/528Y02E60/50
Inventor 尹海涛
Owner PRUDENT ENERGY
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