cylindrical lithium ion battery
The cylindrical lithium ion battery represents a groundbreaking advancement in energy storage technology, characterized by its distinctive tubular shape and high-performance capabilities. These batteries feature a sophisticated internal structure consisting of precisely wound layers of cathode, anode, and separator materials, all encased in a robust metal housing. The design maximizes energy density while maintaining structural integrity, making it ideal for various applications. The standard 18650 format, measuring 18mm in diameter and 65mm in length, has become an industry benchmark, though other sizes like 21700 and 26650 are also prevalent. These batteries operate through the controlled movement of lithium ions between electrodes during charging and discharging cycles, delivering consistent power output and maintaining stable performance over extended periods. Their construction incorporates advanced safety features, including pressure relief mechanisms and thermal management systems, ensuring reliable operation under diverse conditions. The technology enables high energy density, typically ranging from 250-300 Wh/kg, supporting extended operating times in portable devices and electric vehicles. Modern cylindrical cells also feature sophisticated battery management systems that monitor and optimize performance while preventing potential safety issues through precise control of charging and discharging processes.