Dual-LCC-Based Wireless Heating Method for Electric Drone Lithium-ion Batteries in Low-Temperature Environments

The performance of onboard lithium-ion batteries in drones deteriorates rapidly during low-temperature operations. This study proposes a layered wireless heating solution for lithium-ion batteries based on a Dual-LCC resonant topology. The series resonant inductor and energy-receiving coil are arranged in a stacked configuration, enabling both battery heating and bidirectional energy transfer. Through the analysis of the Dual-LCC wireless power transfer mechanism, a series compensation inductor is proposed as an additional heating coil in an innovative architecture. A dual-inductor stacked heating scheme is designed, and the battery is reconfigured and integrated into the system structure. A magnetic shielding design ensures system decoupling and efficient wireless power transfer (WPT). Finally, finite element simulations validate the heating uniformity and temperature control performance of the layered integration scheme, with an average temperature rise of 35.96°C after 120 seconds and a battery temperature difference of less than 1°C.