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Hydrogen concentration control system for flow battery

A liquid flow battery and control system technology, applied in the direction of fuel cells, electrical components, fuel cell additives, etc., can solve problems such as pollution, increase operation and maintenance costs, and meet the requirements of reducing emissions, reducing the explosion-proof level of sites and equipment , The effect of solving hydrogen safety problems

Inactive Publication Date: 2020-12-29
北京和瑞储能科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Similarly, this method will consume inert gas continuously, and the inert gas needs to be replenished regularly, increasing operation and maintenance costs
In addition, during the discharge process, other volatile substances in the system will inevitably be discharged together, causing pollution

Method used

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  • Hydrogen concentration control system for flow battery
  • Hydrogen concentration control system for flow battery
  • Hydrogen concentration control system for flow battery

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Embodiment Construction

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0025] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element refe...

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Abstract

The invention provides a hydrogen concentration control system for a flow battery. The system comprises an electrolyte storage tank which is used for storing electrolyte and receiving gas with lower hydrogen concentration from a fuel cell so that the mixed hydrogen in the electrolyte is mixed with the gas with lower hydrogen concentration to generate gas with higher hydrogen concentration, and thegas with higher hydrogen concentration is discharged from the electrolyte storage tank and transmitted to a fuel cell; and a fuel cell is used for receiving the gas with higher hydrogen concentrationand reacting with oxygen in the air to consume the oxygen and the hydrogen in the system, so that the hydrogen concentration is reduced, and the generated gas with lower hydrogen concentration is sent to the electrolyte storage tank. The system is advantaged in that a hydrogen safety problem of the flow battery system can be solved, meanwhile, emission is reduced, the system is safer and more environmentally friendly, inert gas is not consumed, periodic supplementation is not needed, operation and maintenance cost is reduced, meanwhile, the requirement for chemical system design can be lowered, the requirement for the site and the equipment explosion-proof grade is lowered, and the application prospect is wide; total cost of the system is reduced.

Description

technical field [0001] The invention relates to the technical field of flow batteries, in particular to a hydrogen concentration control system for flow batteries. Background technique [0002] In recent years, the demand for large-scale energy storage has grown rapidly. As the most mature power storage technologies, lithium batteries and lead-acid batteries still have many limitations, which are difficult to overcome in a short time. Therefore, flow batteries have gradually become a popular direction of development. Among them, relatively low-cost aqueous flow batteries, such as all-vanadium flow batteries and iron-chromium flow batteries, all have hydrogen evolution problems to varying degrees. Although the rate and total amount of hydrogen produced are very low, it will still continue to accumulate in the storage tank, and the concentration will continue to increase, which will pose a risk of explosion. Therefore, it is necessary to control the hydrogen concentration in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04791H01M8/04276
CPCH01M8/04276H01M8/04791Y02E60/50
Inventor 李京浩杨林江小松刘雨佳李晓蒙王含
Owner 北京和瑞储能科技有限公司
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