Dynamic Thermal Model for Cylindrical Battery Cell Temperature Modeling

2019 ◽  
Vol 95 (1) ◽  
pp. 371-377
Author(s):  
Marek Toman ◽  
Radoslav Cipin ◽  
Pavel Vorel ◽  
Dalibor Cervinka
2018 ◽  
Vol 87 (1) ◽  
pp. 285-290
Author(s):  
Marek Toman ◽  
Radoslav Cipin ◽  
Pavel Vorel

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Dirk Nissing ◽  
Arindam Mahanta ◽  
Stefan van Sterkenburg

The temperature of a Lithium battery cell is important for its performance, efficiency, safety, and capacity and is influenced by the environmental temperature and by the charging and discharging process itself. Battery Management Systems (BMS) take into account this effect. As the temperature at the battery cell is difficult to measure, often the temperature is measured on or nearby the poles of the cell, although the accuracy of predicting the cell temperature with those quantities is limited. Therefore a thermal model of the battery is used in order to calculate and estimate the cell temperature. This paper uses a simple RC-network representation for the thermal model and shows how the thermal parameters are identified using input/output measurements only, where the load current of the battery represents the input while the temperatures at the poles represent the outputs of the measurement. With a single measurement the eight model parameters (thermal resistances, electric contact resistances, and heat capacities) can be determined using the method of least-square. Experimental results show that the simple model with the identified parameters fits very accurately to the measurements.


2011 ◽  
Vol 134 (1) ◽  
Author(s):  
Ty W. Neises ◽  
Sanford A. Klein ◽  
Douglas T. Reindl

The temperature of a photovoltaic module is typically required as an input to models that predict the module’s performance. Some common models use the nominal operating cell temperature (NOCT), as by the manufacturer. This paper develops a thermal model and uses it to analyze NOCT testing standards. Specifically, the standard correction factor charts found in the ASTM E1036 and IEC 61215 standards are evaluated. Results show that the correction charts were likely created assuming laminar flow correlations, while validation efforts and the fact that wind is often characterized by turbulence even at low wind speeds suggest that turbulent flow models may be more appropriate. In addition, the results presented in this paper show that the standard NOCT charts do not account for the backside insulation of photovoltaic (PV) arrays. These results suggest that the standard correction charts are inaccurate for any mounting types that differ from the open rack configuration. The paper concludes with recommendations to improve the usefulness of the NOCT.


Energy ◽  
2021 ◽  
pp. 121296
Author(s):  
Manuel Antonio Perez Estevez ◽  
Sandro Calligaro ◽  
Omar Bottesi ◽  
Carlo Caligiuri ◽  
Massimiliano Renzi

2019 ◽  
Vol 68 (11) ◽  
pp. 10594-10606
Author(s):  
Manlio Valerio Morganti ◽  
Stefano Longo ◽  
Marko Tirovic ◽  
Chiu-Yueh Blaise ◽  
Gregory Forostovsky

2020 ◽  
Vol 10 (5) ◽  
pp. 1465-1473
Author(s):  
Chenxi Li ◽  
Sergiu Viorel Spataru ◽  
Kanjian Zhang ◽  
Yongheng Yang ◽  
Haikun Wei

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