Electromagnetic Modeling, Design and Measurements of Wireless Links for Battery Module Monitoring

The thesis investigates the feasibility of monitoring extensive sensor networks without the need for physical wiring, focusing on complex environments such as battery module enclosures. Two wireless transmission methods were examined: far-field and near-field communication. Given the inherently noisy and reflective characteristics of battery enclosures, an electromagnetic analysis was performed to evaluate the reliability of wireless communication. While far-field communication provides the advantage of longer range, its performance is significantly affected by electromagnetic interference and signal reflections; these challenges highlight the need for a robust communication protocol to ensure data integrity and reliable transmission between the nodes and the master control circuit. In contrast, near-field communication offers enhanced resilience to interference due to the proximity of the antennas, as well as improved cybersecurity. The study focused on the coupling between a microstrip reader and loop antennas placed on the battery cells. Performance was assessed at frequencies of 865 MHz and 2.4 GHz; the obtained results indicate promising potential for secure and interference-resistant data exchange in such environments.