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Prof. Dr.-Ing. Julia Kowal
- Julia Kowal
[1]- © privat
Room: EMH 163
Address:
Einsteinufer 11
Sec. EMH 2
10587 Berlin
Phone: +49 (0)30 314-25394
Fax: +49 (0)30 314-21133
E-mail: Julia.Kowal@tu-berlin.de [2]
Consultation hours: On Mondays 9 - 10 h and on appointment. In summer semester 2022 (25.4.-18.7.), the consultation hour will be from 10-11 h.
In most weeks, I am in the office on mondays, so a personal meeting is possible again. To be sure, please ask before you come. Alternatively, you can phone me or we can arrange a Zoom meeting.
Vita
| since 03/2014 | Chair of Electrical
Energy Storage Technology at the TU Berlin |
|---|---|
| 01/10 - 02/14 | Senior engineer at the
department of Electrochemical Energy Conversion and Storage
Systems, ISEA, RWTH Aachen |
| 2010 | PhD at RWTH Aachen,
Topic: "Spatially-resolved impedance of nonlinear inhomogeneous
devices - using the example of the lead-acid
battery" |
| 04/06-05/06 | Visiting researcher
at the company Exide in Azuqueca de Hénares,
Spain |
| 10/05-12/05 | Visiting Researcher
at the research centre RISØ in Roskilde,
Denmark |
| 11/04-12/09 | Research
assistant at the department of Electrochemical Energy Storage
Conversion and Systems at the Institute For Power Electronics and
Electrical Drives (ISEA), RWTH Aachen |
| 10/99-11/04 | Studies of electrical
engineering at RWTH Aachen Diploma thesis: "Investigation of the
thermal behaviour of electrochemical energy storage systems in vehicle
on-board power
supplies" |
| 2006 | Herbert-Kind-Price of ETG in the
VDE |
|---|---|
| 2006 | Brigitte-Berkenhoff-Price for the best graduate
in the field of electrical engineering at RWTH
Aachen |
| 2002 | Aachen's VDE
price |
| 2001-2004 | Sponsorship through
the Prof. Dr. Koepchen Merit
Foundation (RWE) |
Publications
| Citation key | batteries8020008 |
|---|---|
| Author | Kim, Jonghyeon and Kowal, Julia |
| Year | 2022 |
| ISSN | 2313-0105 |
| DOI | 10.3390/batteries8020008 |
| Journal | Batteries |
| Volume | 8 |
| Number | 2 |
| Abstract | Lithium-ion battery cells not only show different behaviors depending on degradation and charging states, but also overcharge and overdischarge of cells shorten battery life and cause safety problems, thus studies aiming to provide an accurate state of a cell are required. Measurements of battery cell impedance are used for cell SoH and SoC estimation techniques, but it generally takes a long time for a cell in each state to be prepared and cell voltage response is measured when charging and discharging under each condition. This study introduces an electrical equivalent circuit model of lithium-ion cells developed in the MATLAB/Simulink environment. Cell SoC, SoH, temperature, and C-rate are considered for more accurate cell impedance prediction, and the simulation results are verified with the measurement results. The developed model is suitable for use in cell SoC and SoH monitoring studies by successfully outputting cell impedance through real-time prediction of cell voltage during discharge. |
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Address
Technische Universität BerlinElectrical Energy Storage Technology
Institute of Energy and Automation Technology
Faculty IV
sec. EMH 2
Einsteinufer 11
D-10587 Berlin
Contact
Sec. EMH2Room EMH 162
+49 (0)30 314-21633
+49 (0)30 314-21133
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