Device and setup for quick diagnostic of automotive batteries

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F25%3A00387066" target="_blank" >RIV/68407700:21230/25:00387066 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21260/25:00387066
Result on the web
<a href="https://technology.fel.cvut.cz/vyzkum/tn02000054_3-v11/" target="_blank" >https://technology.fel.cvut.cz/vyzkum/tn02000054_3-v11/</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Device and setup for quick diagnostic of automotive batteries
Original language description
The result is a functional measurement setup for quick diagnostic of automotive battery cells based on electrochemical impedance spectroscopy (EIS). The setup consists of a novel impedance measurement device, auxiliary hardware, and control and evaluation software. The core of the solution is a patented measuring block using passive matching transformers and dual measurement branches, which enables accurate sensing of very small impedances in the milliohm range with a high signal-to-noise ratio and short measurement times. The device is controlled via a PC application developed in MATLAB, which manages measurement configuration, automated acquisition of EIS spectra, and subsequent processing, including fitting the measured data to an equivalent electrical circuit model of the lithium-ion cell. The setup has been experimentally verified on precision reference components and LiFeYPO₄ cells, demonstrating measurement repeatability comparable with commercial EIS instruments. The result is intended for rapid battery evaluation, production quality control, and sorting of cells for second-life applications in the automotive and energy sectors.
Czech name
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Czech description
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Project
<a href="/en/project/TN02000054" target="_blank" >TN02000054: Božek Vehicle Engineering National Center of Competence</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Internal product ID
TN02000054/3-V11
Numerical identification
TN02000054/3-V11
Technical parameters
- Main components: Generator of the signal, D/A converter, A/D converter (NI USB-6211), analogue power supply for low noise, power amplifier (TDA7294), passive transformers - Measured quantities: Voltage, Impedance - Data processing: Routines in MATLAB/LabVIEW - Operation parameter limits: frequency range 10-2-104 Hz - Accuracy: signal-to-noise-ratio 80-100 dB - Voltage range: 0.1-6 V - Current range: 0.02-1.2 A
Economical parameters
- Development cost (i.e., components and parts used during the development): 150 000 CZK - Estimated related research personnel hours: 2 300 h - Estimated cost benefit for battery manufacturers and battery second-life repurposers: on the order of tens of thousands of CZK up to tens of millions of CZK.
Application category by cost
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Owner IČO
68407700
Owner name
České vysoké učení technické v Praze
Owner country
CZ - CZECH REPUBLIC
Usage type
V - Výsledek je využíván vlastníkem
Licence fee requirement
Z - Poskytovatel licence na výsledek nepožaduje v některých případech licenční poplatek
Web page
https://technology.fel.cvut.cz/vyzkum/tn02000054_3-v11/

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