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Method for testing flow of single battery in flow battery module

A single battery and liquid flow battery technology, applied in secondary batteries, measuring electric variables, circuits, etc., to achieve the effect of easy implementation, convenient operation and remarkable effect

Active Publication Date: 2019-11-05
大连融科储能装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of measuring the flow rate of a single battery in a flow battery module, the present invention proposes the following scheme: a method for testing the flow rate of a single battery in a flow battery module, and the electrolytes in the positive and negative electrode solution storage tanks are both in the valence distribution It is a mixed solution of trivalent vanadium ions and tetravalent vanadium ions, and the constant current charges the constant current source to control the electrochemical reaction speed in the positive and negative cavity of each single battery to stabilize, so that the electrochemical reaction speed is greater than the fluid renewal speed , the oxidation of trivalent vanadium ions in the positive cavity of the single battery completely causes the ions in this valence state to disappear, and a potential breakthrough is generated. The voltage range of the breakthrough voltage is calculated from the collected single battery voltage, and the potential breakthrough time is determined by it. Calculation of Fluid Flow in a Single Battery Based on Potential Jump Time

Method used

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  • Method for testing flow of single battery in flow battery module
  • Method for testing flow of single battery in flow battery module
  • Method for testing flow of single battery in flow battery module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Test the anode flow rate of the single cell of a 10-cell all-vanadium flow battery module. Add 100L of positive 0.05M trivalent vanadium and 1.45M tetravalent vanadium to the battery positive storage tank. Add 100L of 0.05M trivalent vanadium and 1.45M tetravalent vanadium to the negative electrode storage tank. Battery operating flow is 1.0m 3 / h, turn on the constant current source 100A for charging.

[0082] The upper computer software shows the flow of a single pool as follows:

[0083] F1F2F3F4F5F6F7F8F9F10 0.10.0850.090.0950.110.120.10.090.0911.1

Embodiment 2

[0085] Test the negative flow of the single cell negative electrode of the 10-cell all-vanadium flow battery module. Add 100L of 0.05M trivalent vanadium and 1.45M tetravalent vanadium to the battery positive storage tank. Add 100L of 0.05M trivalent vanadium and 1.45M tetravalent vanadium to the negative electrode storage tank. Connect the positive DC bus of the constant current source to the negative pole of the stack, and connect the negative DC bus to the positive pole of the stack. Battery operating flow is 1.0m 3 / h, turn on the constant current source 100A for charging.

[0086] The upper computer software shows the flow of a single pool as follows:

[0087] F1F2F3F4F5F6F7F8F9F10 0.10.0850.110.0950.10.10.10.090.110.1

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Abstract

The invention discloses a method for testing flow of a single battery in a flow battery module, and belongs to the field of flow detection of single batteries of all-vanadium flow batteries; in orderto solve the problem in measuring the flow of the single battery in the flow battery module, the technical key points are that trivalent vanadium ions in a positive cavity of the single battery are completely oxidized, so that the trivalent ions disappear, and potential sudden changes are generated; the jump voltage range is calculated according to the collected single battery voltage, and the electric potential jump time is determined based on the jump voltage range; and then the fluid flow of the single battery is calculated based on the electric potential jump time, and the effect of measuring the flow of the single battery in the flow battery module is achieved.

Description

Technical field [0001] The invention belongs to the field of flow detection of a single cell of an all-vanadium flow battery, and relates to a method for testing the flow of a single cell in a flow battery module. Background technique [0002] In the process of R&D, manufacturing, or use of the stack, the flow channels of the single cells may collapse or block, or the flow of the single cells may be inconsistent due to poor consistency of electrode materials. Long-term operation of single cells with insufficient flow will cause corrosion of the electrodes and affect the life of the stack. In reality, the inside of the stack is a closed space, and there is no means to detect the flow of the single cells in the stack. Summary of the invention [0003] In order to solve the problem of cell flow measurement in the flow battery module, the present invention proposes the following scheme: a method for testing the flow of the cell in the flow battery module, the electrolytes of the posi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/48G01R31/36
CPCG01R31/36H01M10/48Y02E60/10
Inventor 韩希张华民韩乐聪荣明林李亮殷宝剑徐世博刘星陈思
Owner 大连融科储能装备有限公司