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Flow battery stack structure

A technology for flow batteries and stacks, applied in fuel cell parts, fuel cells, structural parts, etc., can solve the problems of electrolyte leakage, time-consuming and labor-intensive, etc., to improve consistency, improve stacking efficiency, and reduce assembly. The effect of the number of parts

Active Publication Date: 2014-06-04
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the assembly process, workers or machinery are required to install the battery materials and sealing materials layer by layer, which is not only time-consuming and laborious, but also easily causes electrolyte leakage due to component misalignment; Requirements for compression force and sealing force, design spring distribution, select spring stiffness and number, and finally compress the spring

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0035] refer to figure 1, the snap-fit ​​integrated unit structure described in the present invention is composed of a first electrode frame 1 , a second electrode frame 2 , a diaphragm 3 , and a sealing structure 4 . The buckle structure means that the outer edges of the first electrode frame 1 and the second electrode frame 2 in the extension and width directions are provided with snap hooks 5 that can cooperate with each other. The structure of the snap hooks includes: a ring The supporting arm, a ring-shaped elastic arm and a ring-shaped fixing block with an occlusal surface, the outer edges of the frames in the extension and width directions of the first electrode frame and the second electrode frame extend outward to form a ring-shaped support arm, The other end fixed to the ring-shaped support arm extends in a direction perpendicular to the plane of the electrode frame to form a ring-shaped elastic arm, and the other end of the ring-shaped elastic arm extends in a direc...

Embodiment 2

[0039] refer to image 3 , the buckle-type integrated structural unit in the stack refers to figure 1 Evolved: It is formed by sequentially connecting the first electrode frame, diaphragm, second electrode frame, second current collector, battery unit, third current collector, third electrode frame, diaphragm, and fourth electrode frame. The battery unit includes an electrode frame, a diaphragm, and an electrode frame connected in sequence, and a sealing structure between the electrode frame and the diaphragm. The first electrode frame and the fourth electrode frame are provided with buckle structures that can engage with each other at the outer edges of the frames in the extension and width directions; among them, between the first electrode frame and the diaphragm, between the diaphragm and the second electrode frame, and between the first electrode frame and the second electrode frame. Between the second electrode frame and the second current collecting plate, between the ...

Embodiment 3

[0043] refer to Figure 4 , the buckle-type integrated structural unit in the stack refers to figure 1 Developed from the first electrode frame, diaphragm, second electrode frame, second current collector, n (n>1, n is a positive integer) battery cells and current collectors between adjacent battery cells, the second The three current collecting plates, the third electrode frame, the diaphragm and the fourth electrode frame are sequentially connected. The battery unit includes an electrode frame, a diaphragm, and an electrode frame connected in sequence, and a sealing structure between the electrode frame and the diaphragm, and a sealing structure is provided between the battery unit and the current collector between adjacent battery units. The first electrode frame and the fourth electrode frame are provided with buckle structures that can engage with each other at the outer edges of the frames in the extension and width directions; among them, between the first electrode fr...

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Abstract

The present invention relates to a flow battery stack structure, which is formed by sequentially and alternately connecting two or more than two integrated structure units and current collection plates, wherein sealing structures are arranged between the integrated structure units and the current collection plates, the integrated structure unit is characterized by comprising a first electrode frame, a sealing structure between the first electrode frame and a separation membrane, the separation membrane, a sealing structure between a second electrode frame and the separation membrane, and the second electrode frame, the frame outer edge positions of the first electrode frame and the second electrode frame in the length direction and the width direction are provided with snapping structures capable of being mutually engaged, and the first electrode frame, the sealing structure between the first electrode frame and the separation membrane, the separation membrane, the sealing structure between the separation membrane and the electrode frame, and the second electrode frame are integratedly snapped with the snapping structures. According to the flow battery stack structure, the snapping of the corresponding snapping structures on the electrode frames is adopted to combine the integrated unit so as to reduce the assembly force, simplify the assembly process, and improve the uniformity and the stacking efficiency of the stack.

Description

technical field [0001] The invention relates to a stack structure of a liquid flow battery. Background technique [0002] With the rapid development of modern social economy, the contradiction among energy, resources and environment has become increasingly prominent. Renewable energy (such as wind energy, solar energy, tidal energy, etc.) The characteristics of instability and discontinuity determine that it needs the adjustment of the intermediate process in the power grid connection to work normally, effectively and safely, and the storage and release of electric energy is the most important technical link in this process. Redox flow battery is an electrochemical device that uses the oxidation-reduction reaction of elements with different valence states to store and convert energy. It can convert discontinuous and unstable input into continuous, stable and safe output, overcoming possible Defects in the application of renewable energy. Among them, the all-vanadium redox ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/24H01M8/02H01M2/08H01M50/46H01M50/463H01M50/471
CPCY02E60/50H01M8/0273H01M8/0276H01M8/188H01M8/247H01M8/248
Inventor 张华民邢枫李先锋
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI