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All-vanadium redox flow battery pipeline system having liquid mixing function

An all-vanadium redox flow battery and pipeline technology, which is applied in circuits, fuel cells, fuel cell additives, etc., can solve the problems of energy storage system capacity decline, excessive liquid level difference, etc., and achieve the effect of avoiding safe operation

Active Publication Date: 2019-07-23
CHINA ELECTRIC POWER RES INST
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The present invention provides an all-vanadium redox flow battery pipeline system with liquid mixing function to overcome the capacity drop of the energy storage system caused by the excessive liquid level difference in the positive and negative electrolyte liquid storage tanks when the current flow battery is running. question

Method used

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  • All-vanadium redox flow battery pipeline system having liquid mixing function
  • All-vanadium redox flow battery pipeline system having liquid mixing function
  • All-vanadium redox flow battery pipeline system having liquid mixing function

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Embodiment Construction

[0049] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0050] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention provides an all-vanadium redox flow battery pipeline system having a liquid mixing function. The all-vanadium redox flow battery pipeline system comprises a positive liquid storage tank,a negative liquid storage tank, a first liquid mixing pipeline and a second liquid mixing pipeline, wherein the first liquid mixing pipeline comprises a positive liquid outlet pipeline (3), a positive electrolyte transmission pump (5), a liquid transmission valve (29), a liquid return valve (33) and a negative liquid return pipeline (14), the negative liquid return pipeline (14) is arranged in the negative liquid storage tank, the second liquid mixing pipeline comprises a negative liquid outlet pipeline (4), a negative electrode transmission pump (6), a liquid transmission valve (30), a liquid return valve (34) and a positive liquid return pipeline (13), and the positive liquid return pipeline (13) is arranged in the positive liquid storage tank. By the pipeline system, the liquid difference in the liquid storage tanks of a positive electrolyte and a negative electrolyte can be basically zero, the capacity of the redox flow battery energy storage system is enabled to be maintained ina stable state for a long time, and the defect of threatening safety running of the system is prevented.

Description

technical field [0001] The invention relates to the technical field of liquid flow battery energy storage, in particular to a flow battery pipeline system with a liquid mixing function. Background technique [0002] Liquid flow battery is one of the green batteries with strong development momentum at present. It has obvious advantages such as high power, long life, deep and high current density charge and discharge, etc. It has become one of the main commercial development directions in the battery system. In wind power, Photovoltaic power generation, power grid peak regulation and other fields have extremely broad application prospects. [0003] Compared with other non-flow batteries, the significant difference between flow batteries is that flow batteries need to use positive and negative electrolyte magnetic drive circulation pumps to transport the electrolyte in the positive and negative electrolyte storage tanks along the pipeline to The electric stack is used to gener...

Claims

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Application Information

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IPC IPC(8): H01M8/18H01M8/04276
CPCH01M8/04276H01M8/188Y02E60/50
Inventor 谢志佳李建林惠东
Owner CHINA ELECTRIC POWER RES INST
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