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Test method for the flow rate of a single battery in a 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 operation, remarkable effect and easy implementation

Active Publication Date: 2021-03-02
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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  • Test method for the flow rate of a single battery in a flow battery module
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  • Test method for the flow rate of a single battery in a flow battery module

Examples

Experimental program
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Effect test

Embodiment 1

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

[0082] The host computer software displays the flow rate of a single pool as follows:

[0083] F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 0.1 0.085 0.09 0.095 0.11 0.12 0.1 0.09 0.091 1.1

Embodiment 2

[0085] Test the negative electrode flow rate of the single battery of the 10-cell vanadium redox flow battery module. Add 0.05M trivalent vanadium and 1.45M tetravalent vanadium 100L into the positive electrode liquid storage tank of the battery. Add to the negative electrode storage tank: 0.05M trivalent vanadium and 1.45M tetravalent vanadium 100L. 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. The battery runs at a flow rate of 1.0m 3 / h, turn on the constant current source 100A for charging.

[0086] The host computer software displays the flow rate of a single pool as follows:

[0087] F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 0.1 0.085 0.11 0.095 0.1 0.1 0.1 0.09 0.11 0.1

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Abstract

The test method for the flow rate of a single battery in a flow battery module belongs to the field of flow detection of a single battery in an all-vanadium redox flow battery. The oxidation of the trivalent vanadium ion completely makes the ions in the valence state disappear, and a potential breakthrough is generated. The voltage range of the breakthrough voltage is calculated from the collected voltage of the single battery, and the potential breakthrough time is determined by it, and the single cell is calculated from the potential breakthrough time. The fluid flow of the battery, the effect is to realize the flow measurement of the single battery in the flow battery module.

Description

technical field [0001] The invention belongs to the field of flow detection of a single battery of an all-vanadium redox flow battery, and relates to a method for testing the flow of a single battery in a liquid flow battery module. Background technique [0002] In the process of R&D, manufacturing or use of the stack, there may be inconsistency in the flow of the single battery due to reasons such as the flow channel of the single battery collapses, is blocked, or the consistency of the electrode material is not good. Long-term operation of a single battery with insufficient flow will cause the electrodes to be corroded and affect the service life of the stack. In reality, the interior of the electric stack is a closed space, and there is no means to detect the flow rate of the single cells in the electric stack. Contents of the invention [0003] In order to solve the problem of measuring the flow rate of a single battery in a flow battery module, the present invention ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/48G01R31/385
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