Fast Charging Thermal Management of Lithium ion battery (using silicon oil as a direct contact cooling at different charge-discharge conditions), applications and future prospects of lithium battery system for bio-medical devices (pacemaker, electric-wheelchair)

Abstract

Lithium-ion batteries (LIBs) are the central source of energy storage for a myriad of devices, from small medical electronics to larger portable devices. They find their applications in implantable devices within the healthcare system. However, thermal management of LIBs remains a critical challenge, particularly under higher chargedischarge conditions. To address this issue, intensive research is being conducted. This thesis employs the method of direct contact liquid cooling of LIBs to control their temperature within safe operating conditions. The thermal analysis of LIBs evaluates cooling with or without an externally powered cooling system to enhance the performance and safety of LIBs, effectively increasing their life cycle. The experimental setup involves immersing a standard commercial LIB in silicon oil, which is circulated and cooled using an external pump, radiator, and fan before being circulated back to the LIB chamber. The results show significant improvements in the thermal stability of LIBs with this method and the peak temperature values indicate higher thermal cooling, stability, and safety. Thermal management of lithium-ion batteries in medical devices, along with the applications and future prospects of lithium battery systems, are the core topics of this thesis. LIBs are the most effective and ideal power storage systems and have found applications in various portable electronic medical devices such as electric wheelchairs. These medical portable devices use batteries for their portability, providing a range of movement and power backup during emergencies. This research also recommends the future of LIBs in the medical industry and lays the foundation for thermal analysis groundwork for future research.