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Test method and test device for distribution of electrolyte in vanadium battery stack

A test method and test device technology, applied in fuel cells, regenerative fuel cells, circuits, etc., can solve problems such as uneven electrolyte distribution, and achieve the effect of ensuring safe operation

Active Publication Date: 2019-03-12
CHINA ELECTRIC POWER RES INST +2
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  • Description
  • Claims
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Problems solved by technology

[0003] In view of this, the present invention proposes a method and device for testing the distribution of the electrolyte in the vanadium battery stack, aiming to grasp the distribution of the electrolyte in the stack by testing the pressure of the electrolyte in the flow battery in real time, and then optimize the flow battery. Stack design and assembly to solve problems caused by uneven electrolyte distribution in flow batteries

Method used

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  • Test method and test device for distribution of electrolyte in vanadium battery stack
  • Test method and test device for distribution of electrolyte in vanadium battery stack
  • Test method and test device for distribution of electrolyte in vanadium battery stack

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Embodiment Construction

[0021] Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.

[0022] Method embodiment:

[0023] Refer to figure 1 , The method for testing the electrolyte distribution in the vanad...

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Abstract

The invention provides a test method and a test device for testing distribution of electrolyte in a vanadium battery stack, and the main technical solution is that the method comprises the following steps: obtaining the pressure difference at different positions on the current collecting plates or the pressure difference at corresponding positions on different current collecting plates by respectively installing several force sensitive sensors on current collecting plates of single batteries or corresponding current collecting plates in single batteries connected in series in the stack, and determining the distribution of electrolyte on the current collecting plates of the single batteries, at both sides of the ion exchange membrane of the single batteries or in the single batteries in multistage serial connection in the stack according to the pressure difference, which realizes real-time on-line detection of the distribution of electrolyte for the liquid flow battery stack in variousapplication processes, provides verification means for the design of the liquid flow battery stack, provides an early warning signal for the safe operation of the liquid flow battery stack, and provides reliable evaluation indicators and reference basis for the operation and maintenance of the liquid flow battery stack.

Description

Technical field [0001] The invention relates to the technical field of flow batteries, in particular to a method and device for testing the distribution of electrolyte in a vanadium battery stack. Background technique [0002] The all-vanadium flow battery is a new type of electrochemical battery that uses the oxidation-reduction reaction between vanadium ions of different valences for energy storage and utilization. The all-vanadium redox flow battery stores the positive and negative electrolytes in two storage tanks. The acid-resistant liquid pump drives the active electrolyte to the battery stack and then back to the storage tank to form a circulating liquid flow loop to realize the charge and discharge process. . Among them, the battery stack, as the core component of the vanadium battery system, is mainly composed of bipolar plates, porous electrodes and ion exchange membranes. Its performance directly affects the charging and discharging efficiency and life of the system. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0438H01M8/04664H01M8/18
CPCH01M8/04432H01M8/04679H01M8/188Y02E60/50
Inventor 陈继忠闫涛张明霞陈兵贾萌萌徐少华毛海波范红家褚永金
Owner CHINA ELECTRIC POWER RES INST
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