Study on Twist Performance of Superconducting Charging Plug Cable

Electric vehicles (EVs) have been developing rapidly in recent years. However, the charging speed of existing EVs has encountered a bottleneck, which has become a major constraint on their further development. Superconducting cables offer significant advantages, including high current-carrying capacity and low losses, demonstrating great potential for enhancing EV charging performance. In this paper, we design a superconducting charging plug - a specialized connector for EVs - based on a flexible superconducting cable, aiming to achieve faster charging. Through a combination of mechanical simulation and experimental validation on custom-fabricated single- and doublelayer cable samples, the critical twisting angle was evaluated. The results show that the proposed cable design exhibits superior torsional performance, with a critical twisting angle per meter that is 49.68% higher than that of conventional copper-core CORC cables. This work provides key insights for the structural optimization of high-performance superconducting charging systems.