Coupled Electrochemical-Thermal Simulations and Validation of Minichannel Cold-Plate Water-Cooled Prismatic 20 Ah LiFePO<sub>4</sub> Battery
This paper discusses the quantitative validation carried out on a prismatic 20 Ah LiFePO<sub>4</sub> battery sandwiched between two minichannel cold-plates with distributed flow having a single U-turn. A two-way coupled electrochemical-thermal simulations are performed at different disch...
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MDPI AG
2021-11-01
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| Series: | Electrochem |
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| Online Access: | https://www.mdpi.com/2673-3293/2/4/40 |
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| author | Chaithanya Akkaldevi Sandeep Dattu Chitta Jeevan Jaidi Satyam Panchal Michael Fowler Roydon Fraser |
| author_facet | Chaithanya Akkaldevi Sandeep Dattu Chitta Jeevan Jaidi Satyam Panchal Michael Fowler Roydon Fraser |
| author_sort | Chaithanya Akkaldevi |
| collection | DOAJ |
| description | This paper discusses the quantitative validation carried out on a prismatic 20 Ah LiFePO<sub>4</sub> battery sandwiched between two minichannel cold-plates with distributed flow having a single U-turn. A two-way coupled electrochemical-thermal simulations are performed at different discharge rates (1–4 C) and coolant inlet temperatures (15–35 °C). The predicted battery voltage response at room temperature (22 °C) and the performance of the Battery Thermal Management System (BTMS) in terms of the battery surface temperatures (maximum temperature, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>T</mi><mrow><mi>m</mi><mi>a</mi><mi>x</mi></mrow></msub></mrow></semantics></math></inline-formula> and temperature difference, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>Δ</mo><mi>T</mi></mrow></semantics></math></inline-formula>) have been analyzed. Additionally, temperature variation at ten different locations on the battery surface is studied during the discharge process. The predicted temperatures are compared with the measured data and found to be in close agreement. Differences between the predicted and measured temperatures are attributed to the assumption of uniform heat generation by the Li-ion model (P2D), the accuracy of electrochemical property input data, and the accuracy of the measuring tools used. Overall, it is suggested that the Li-ion model can be used to design the efficient BTMS at the cell level. |
| first_indexed | 2024-03-10T04:16:23Z |
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| language | English |
| last_indexed | 2024-03-10T04:16:23Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electrochem |
| spelling | doaj.art-cdf71fc625df4563a7f0ff7fedd8b4c82023-11-23T08:01:14ZengMDPI AGElectrochem2673-32932021-11-012464366310.3390/electrochem2040040Coupled Electrochemical-Thermal Simulations and Validation of Minichannel Cold-Plate Water-Cooled Prismatic 20 Ah LiFePO<sub>4</sub> BatteryChaithanya Akkaldevi0Sandeep Dattu Chitta1Jeevan Jaidi2Satyam Panchal3Michael Fowler4Roydon Fraser5Department of Mechanical Engineering, BITS Pilani, Hyderabad Campus, Telangana 500078, IndiaDepartment of Mechanical Engineering, BITS Pilani, Hyderabad Campus, Telangana 500078, IndiaDepartment of Mechanical Engineering, BITS Pilani, Hyderabad Campus, Telangana 500078, IndiaMechanical and Mechatronics Engineering Department, University of Waterloo, Waterloo, ON N2L 3G1, CanadaChemical Engineering Department, University of Waterloo, Waterloo, ON N2L 3G1, CanadaMechanical and Mechatronics Engineering Department, University of Waterloo, Waterloo, ON N2L 3G1, CanadaThis paper discusses the quantitative validation carried out on a prismatic 20 Ah LiFePO<sub>4</sub> battery sandwiched between two minichannel cold-plates with distributed flow having a single U-turn. A two-way coupled electrochemical-thermal simulations are performed at different discharge rates (1–4 C) and coolant inlet temperatures (15–35 °C). The predicted battery voltage response at room temperature (22 °C) and the performance of the Battery Thermal Management System (BTMS) in terms of the battery surface temperatures (maximum temperature, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>T</mi><mrow><mi>m</mi><mi>a</mi><mi>x</mi></mrow></msub></mrow></semantics></math></inline-formula> and temperature difference, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>Δ</mo><mi>T</mi></mrow></semantics></math></inline-formula>) have been analyzed. Additionally, temperature variation at ten different locations on the battery surface is studied during the discharge process. The predicted temperatures are compared with the measured data and found to be in close agreement. Differences between the predicted and measured temperatures are attributed to the assumption of uniform heat generation by the Li-ion model (P2D), the accuracy of electrochemical property input data, and the accuracy of the measuring tools used. Overall, it is suggested that the Li-ion model can be used to design the efficient BTMS at the cell level.https://www.mdpi.com/2673-3293/2/4/40Li-ion batteryBTMSminichannel cold-platesC-ratescoolant temperatureCOMSOL software |
| spellingShingle | Chaithanya Akkaldevi Sandeep Dattu Chitta Jeevan Jaidi Satyam Panchal Michael Fowler Roydon Fraser Coupled Electrochemical-Thermal Simulations and Validation of Minichannel Cold-Plate Water-Cooled Prismatic 20 Ah LiFePO<sub>4</sub> Battery Electrochem Li-ion battery BTMS minichannel cold-plates C-rates coolant temperature COMSOL software |
| title | Coupled Electrochemical-Thermal Simulations and Validation of Minichannel Cold-Plate Water-Cooled Prismatic 20 Ah LiFePO<sub>4</sub> Battery |
| title_full | Coupled Electrochemical-Thermal Simulations and Validation of Minichannel Cold-Plate Water-Cooled Prismatic 20 Ah LiFePO<sub>4</sub> Battery |
| title_fullStr | Coupled Electrochemical-Thermal Simulations and Validation of Minichannel Cold-Plate Water-Cooled Prismatic 20 Ah LiFePO<sub>4</sub> Battery |
| title_full_unstemmed | Coupled Electrochemical-Thermal Simulations and Validation of Minichannel Cold-Plate Water-Cooled Prismatic 20 Ah LiFePO<sub>4</sub> Battery |
| title_short | Coupled Electrochemical-Thermal Simulations and Validation of Minichannel Cold-Plate Water-Cooled Prismatic 20 Ah LiFePO<sub>4</sub> Battery |
| title_sort | coupled electrochemical thermal simulations and validation of minichannel cold plate water cooled prismatic 20 ah lifepo sub 4 sub battery |
| topic | Li-ion battery BTMS minichannel cold-plates C-rates coolant temperature COMSOL software |
| url | https://www.mdpi.com/2673-3293/2/4/40 |
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