Electrolyte regulation method and system and flow battery energy storage system

A flow battery and electrolyte technology, applied in electrolyte flow treatment, fuel cells, regenerative fuel cells, etc., can solve problems such as the inability to effectively control the flow of the liquid circuit of the stack

Inactive Publication Date: 2019-12-24
中国东方电气集团有限公司
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Problems solved by technology

[0008] This application provides a method and system for regulating the electrolyte and a flow battery energy storage system to solve the problem in the related art that there are multiple battery stacks connected in series on the liquid flow pipelines, which cannot be effectively controlled. The flow of the liquid path of the battery stack to achieve stable charging and discharging of the system

Method used

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  • Electrolyte regulation method and system and flow battery energy storage system
  • Electrolyte regulation method and system and flow battery energy storage system
  • Electrolyte regulation method and system and flow battery energy storage system

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Embodiment Construction

[0032] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0033] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0034] It should be noted that the terms "first" and "second...

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Abstract

The invention discloses an electrolyte regulation method and system and a flow battery energy storage system. The electrolyte regulation method is suitable for a flow battery energy storage device. The flow battery energy storage device comprises an electrolyte storage tank and a battery stack device. The battery stack device is formed by connecting a plurality of liquid path pipelines in parallel, and each liquid path pipeline communicates the electrolyte of a plurality of battery stacks in series. The method comprises the following steps: determining the state-of-charge value of the electrolyte in the battery stack device; if the state-of-charge value of the electrolyte in the battery stack device is within a first preset range, determining a target electrolyte flow conveyed to the battery stack device by the electrolyte storage tank; and regulating the flow battery energy storage device to a target state according to the target electrolyte flow. According to the application, the problem that the flow of the battery stack liquid paths cannot be controlled and the stable charging and discharging of the system cannot be realized for an energy storage device in which a plurality ofbattery stack liquid paths are connected in series on liquid flow pipelines connected in parallel in the related technology is solved.

Description

technical field [0001] The present application relates to the technical field of flow control of a redox flow battery and a flow battery energy storage device, in particular, to a method and system for regulating an electrolyte and a technology of a flow battery energy storage system. Background technique [0002] Redox flow battery is a new type of electrochemical energy storage system. The flow battery is charged and discharged by utilizing the redox reaction between the active ions contained in the positive electrolyte and the active ions contained in the negative electrolyte. figure 1 It shows the working principle diagram of the all-vanadium redox flow battery, and its principle is that a redox reaction occurs between vanadium ions in different valence states to realize electric energy storage and utilization. V5+ / V4+ vanadium ion electrolyte and V2+ / V3+ vanadium ion electrolyte are stored in the positive and negative electrolyte storage tanks respectively, and are pump...

Claims

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Application Information

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IPC IPC(8): H01M8/04082H01M8/04186H01M8/04276H01M8/04537H01M8/04746H01M8/04992H01M8/18H01M8/2455
CPCH01M8/04186H01M8/04201H01M8/04283H01M8/04559H01M8/04753H01M8/04992H01M8/188H01M8/2455Y02E60/50
Inventor 罗再祥谢光有刘煜刘佳燚陈光颖刘竞博刘睿
Owner 中国东方电气集团有限公司
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