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A driving control method for a lithium-ion flow battery system

A flow battery, lithium ion technology, applied in battery pack parts, secondary battery repair/maintenance, secondary battery charging/discharging, etc., can solve the problem that active materials cannot be fully reacted, and reduce energy loss , the effect of improving energy efficiency, improving energy efficiency and cycle life

Active Publication Date: 2020-08-04
BEIJING HAWAGA POWER STORAGE TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the electrode suspension is driven intermittently, during the intermittent period—that is, during the period of standing still, the electrode suspension will form sediment in the battery reaction chamber, and the electrode suspension far away from the collector area will The active material cannot be fully reacted

Method used

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  • A driving control method for a lithium-ion flow battery system
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  • A driving control method for a lithium-ion flow battery system

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Embodiment Construction

[0045] The present invention will be further described through embodiments below in conjunction with the accompanying drawings.

[0046] figure 1 A schematic diagram of the Li-ion flow battery system. The lithium-ion flow battery system includes: pneumatic drive devices 101, 102; a first positive electrode liquid storage device 201, which is connected to the pneumatic drive device 101 via a first positive electrode gas pipeline 301; a second positive electrode storage device Liquid device 203, the second positive electrode liquid storage device 203 is connected to the pneumatic drive device 101 through the second positive electrode gas pipeline 304; the first negative electrode liquid storage device 401, the first negative electrode liquid storage device 401 is connected through the first negative electrode gas pipeline 501 is connected to the pneumatic drive device 102; the second negative electrode liquid storage device 403, the second negative electrode liquid storage devi...

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Abstract

The invention provides a driving control method for a lithium ion flow battery system, wherein (a) charging or discharging the uncharged or charged positive electrode suspension and negative electrode suspension in the battery reactor, and charging the battery reactor to the charging cut-off voltage or discharge to the discharge cut-off voltage; (b) carry out n times of intermittent disturbance to the battery reactor, and the positive and negative electrode liquid injection volumes are 0.05% to 10% of the volume of the positive electrode reaction chamber and the volume of the negative electrode reaction chamber; (c) The battery reactor is replaced as a whole, and the positive and negative liquid injection volumes are 90% to 100% of the volume of the positive reaction chamber and the negative reaction chamber; (d) repeat steps b-c until the liquid storage device, the positive reaction chamber and the The positive electrode suspension and the negative electrode suspension that need to be charged or discharged in the negative electrode reaction chamber are charged or discharged. According to the driving control method of the present invention, the active material in the electrode suspension can be reacted as completely as possible, and the energy efficiency and cycle life of the battery system can be effectively improved.

Description

technical field [0001] The invention relates to the field of energy storage batteries, in particular to a driving control method for a lithium ion flow battery system. Background technique [0002] Lithium-ion flow battery is a newly developed electrochemical battery technology. It combines the advantages of lithium battery and flow battery. It is an independent output power and energy storage capacity with high energy density and low cost. A new type of secondary battery. It can be widely used in distributed power generation, smart grid, base station energy storage, power grid peak regulation and frequency regulation and other fields. The use of chemical power sources for energy storage is not limited by geographical conditions, and it is expected to achieve large-scale energy storage, which has great social and economic value. [0003] Although lithium-ion flow batteries have many advantages in large-scale energy storage applications, due to the high viscosity of the ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/38H01M2/40H01M10/44H01M50/73H01M50/77
CPCH01M10/44H01M50/73H01M50/70H01M50/77Y02E60/10
Inventor 张晓虎李爱晶陈永翀
Owner BEIJING HAWAGA POWER STORAGE TECH
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