Redox flow battery rebalance system, refox flow battery system and method for cycle capacity rebalance of redox flow battery

A flow battery and cycle capacity technology, applied in the field of electrochemical cells, can solve the problems of poor W catalyst stability, decreased rebalancing performance, electrolyte pollution, etc., to achieve rapid recovery of rebalancing ability, high rebalancing efficiency, and prolonged use. effect of life

Inactive Publication Date: 2016-06-22
SUZHOU JIURUN ENERGY TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, in the early research of Fe-Cr flow battery system mainly conducted by NASA, Fe 3+ -H 2 Rebalance the battery, but the hydrogen electrode needs to use Pt or W catalyst. Pt penetrates into the negative electrode electrolyte through the ion membrane to cause hydro

Method used

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  • Redox flow battery rebalance system, refox flow battery system and method for cycle capacity rebalance of redox flow battery
  • Redox flow battery rebalance system, refox flow battery system and method for cycle capacity rebalance of redox flow battery
  • Redox flow battery rebalance system, refox flow battery system and method for cycle capacity rebalance of redox flow battery

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Embodiment 1

[0066] Such as figure 2 As shown, a Fe-Cr flow battery system includes two main parts: Fe-Cr flow battery B and Fe-Cr flow battery rebalancing system A. Among them, the power of the Fe-Cr flow battery B is 1kW and includes:

[0067] A battery stack composed of a positive electrode, a negative electrode and an ion membrane, the battery stack charging circuit is connected to a charging power supply; the Fe-Cr flow battery B discharge circuit is equipped with a load;

[0068] Positive electrode storage tank 8 is connected to the positive electrode through the positive electrode circulation pipeline with valves 7 and 9 installed; the positive electrode storage tank 8 is used to store the 2+ The positive electrode electrolyte; the positive electrode electrolyte can be transported to the positive electrode by the positive electrode circulation pump 11, react, and then return to the positive electrode storage tank 8;

[0069] The negative electrode storage tank 14 is connected to ...

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PUM

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Abstract

The invention provides a redox flow battery rebalance system, a redox flow battery system containing the same and a method for cycle capacity rebalance of a redox flow battery. The above system or method is particularly and suitably used for a Fe-Cr flow battery. The redox flow battery rebalance system has a flow battery structure, wherein a positive electrolyte storage tank of the rebalance system is used for storing a positive electrode containing active positive ions, a negative electrolyte storage tank of the rebalance system is simultaneously taken as a positive electrode storage tank of a working flow battery and is used for storing a positive electrolyte of the working flow battery, and the redox flow battery rebalance system is only used for charging after being started. With the technical scheme provided by the invention, the redox flow battery rebalance system has the advantages of high rebalance efficiency and convenience, rapidness and high efficiency in operation.

Description

technical field [0001] The invention belongs to the field of electrochemical batteries, and in particular relates to a flow battery rebalancing system, a flow battery system including the flow battery rebalancing system, and a method for rebalancing the circulation capacity of the flow battery. Background technique [0002] Electrochemical flow battery (electrochemical flow cell), referred to as flow battery (flow redox cell or redox flow cell) is a new type of large-scale electrochemical energy storage device. Flow batteries are suitable for large-scale energy storage and are an energy conversion device that can store electrical energy in an electrolyte solution when charging, and convert the stored energy into electrical energy and release it when discharging. The output power of the battery depends on the size and quantity of the battery stack, while the storage capacity depends on the concentration and storage capacity of the electrolyte. During the charging and dischar...

Claims

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Application Information

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IPC IPC(8): H01M8/18H01M8/04H01M8/04082H01M8/04276H01M8/04298
CPCH01M8/04186H01M8/04298H01M8/0444H01M8/04537H01M8/18H01M8/188Y02E60/50
Inventor 马志啟杨颖刘京亮王聪康肖冬
Owner SUZHOU JIURUN ENERGY TECH
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