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- Title
Vanadium Redox Flow Battery Stack Balancing to Increase Depth of Discharge Using Forced Flow Attenuation.
- Authors
Rashitov, Ilia; Voropay, Aleksandr; Tsepilov, Grigoriy; Kuzmin, Ivan; Loskutov, Alexey; Kurkin, Andrey; Osetrov, Evgeny; Lipuzhin, Ivan
- Abstract
Vanadium redox flow batteries are gaining great popularity in the world due to their long service life, simple (from a technological point of view) capacity increase and overload resistance, which hardly affects the service life. However, these batteries have technical problems, namely in balancing stacks with each other in terms of volumetric flow rate of electrolyte. Stack power depends on the speed of the electrolyte flow through the stack. Stacks are connected in parallel by electrolytes to increase battery power. If one of the stacks has a lower hydrodynamic resistance, the volume of electrolytes passing through it increases, which leads to a decrease in the efficiency of the remaining stacks in the system. This experimental study was conducted on a 10 kW uninterruptible power supply system based on two 5 kW stacks of all-vanadium redox flow batteries. It was demonstrated that forced flow attenuation in a circuit with low hydrodynamic resistance leads to an overall improvement in the system operation.
- Subjects
FLOW batteries; VANADIUM redox battery; UNINTERRUPTIBLE power supply; ELECTRIC batteries; SERVICE life
- Publication
Batteries, 2023, Vol 9, Issue 9, p464
- ISSN
2313-0105
- Publication type
Article
- DOI
10.3390/batteries9090464