Title:
METHOD FOR MONITORING AN ENERGY STORAGE POWER PLANT
Document Type and Number:
WIPO Patent Application WO/2023/169823
Kind Code:
A3
Abstract:
The invention relates to a method for monitoring an energy storage power plant comprising a plurality of battery modules (1) which are designed in the form of redox flow batteries, said method having the following steps: S1: generating an excitation current I which varies over time and has a base frequency f and by means of which at least one battery module (1) is excited in order to carry out an impedance spectroscopy; S2: detecting the excitation current I and a response voltage V in a time-resolved manner; S3: calculating the impedance Z(ω), wherein ω=2πf; and S4: initiating maintenance work on the at least one battery module (1) if Re{Z(ω)} exceeds a defined threshold; and in step S1, the excitation current I is generated using a converter (9, 11). The base frequency of the generated excitation current f which varies over time is ≤ 20 Hz.
Inventors:
LI YIFENG (DE)
LÜTH THOMAS (DE)
KAUFMANN JENS (DE)
LÜTH THOMAS (DE)
KAUFMANN JENS (DE)
Application Number:
PCT/EP2023/054417
Publication Date:
March 07, 2024
Filing Date:
February 22, 2023
Export Citation:
Assignee:
VOITH PATENT GMBH (DE)
International Classes:
H01M8/18; G01R31/389; H01M8/04537
Foreign References:
| DE102009000337A1 | 2010-07-22 |
Other References:
TROVÒ ANDREA ET AL: "Multichannel Electrochemical Impedance Spectroscopy and equivalent circuit synthesis of a large-scale vanadium redox flow battery", JOURNAL OF POWER SOURCES, ELSEVIER, AMSTERDAM, NL, vol. 493, 3 March 2021 (2021-03-03), XP086530159, ISSN: 0378-7753, [retrieved on 20210303], DOI: 10.1016/J.JPOWSOUR.2021.229703
TYLER JOSEPH PETEK: "Enhancing the Capacity of All-Iron Flow Batteries: Understanding Crossover and Slurry Electrodes", 1 May 2015 (2015-05-01), XP055365852, Retrieved from the Internet [retrieved on 20240112]
TYLER JOSEPH PETEK: "Enhancing the Capacity of All-Iron Flow Batteries: Understanding Crossover and Slurry Electrodes", 1 May 2015 (2015-05-01), XP055365852, Retrieved from the Internet
Attorney, Agent or Firm:
VOITH PATENT GMBH - PATENTABTEILUNG (DE)
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