Design and analysis of wavy flat plate heat pipe for bidirectional thermal management of Li-ion battery modules
Soroj, Md Mohiuddin (2025)
Diplomityö
2025
School of Energy Systems, Energiatekniikka
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe20251124111124
https://urn.fi/URN:NBN:fi-fe20251124111124
Tiivistelmä
The design and assessment of a wavy flat plate heat pipe based system for the bidirectional thermal control of lithium-ion battery modules utilized in electric vehicles (EVs) are presented in this thesis. Minimizing intra pack temperature gradients and preserving a steady operating temperature between 20°C and 45°C are essential for Li-ion batteries' thermal performance. It is sometimes difficult for traditional systems to attain sufficient thermal uniformity and control in dynamic load and environmental situations.
The suggested wavy flat plate heat pipe and integrated system combine with the refrigeration cycle to provide heating and cooling capabilities. Acetone is chosen because of its advantageous thermophysical characteristics, such as its low viscosity and high latent heat. By using the capillary action of acetone as the working fluid of the designed heat pipe, the design makes it possible to regulate the temperature consistently, independent of orientation. For increased thermal efficiency and compactness, the system can also be directly integrated with a car's HVAC loop.
The findings show that compared to conventional techniques, the WFPHP system greatly enhances temperature uniformity, responsiveness, and bidirectional capability. It promises efficient heat transport, HVAC compatibility, and small size, making it a viable option for long term battery thermal management in next generation EVs.
The suggested wavy flat plate heat pipe and integrated system combine with the refrigeration cycle to provide heating and cooling capabilities. Acetone is chosen because of its advantageous thermophysical characteristics, such as its low viscosity and high latent heat. By using the capillary action of acetone as the working fluid of the designed heat pipe, the design makes it possible to regulate the temperature consistently, independent of orientation. For increased thermal efficiency and compactness, the system can also be directly integrated with a car's HVAC loop.
The findings show that compared to conventional techniques, the WFPHP system greatly enhances temperature uniformity, responsiveness, and bidirectional capability. It promises efficient heat transport, HVAC compatibility, and small size, making it a viable option for long term battery thermal management in next generation EVs.