li ion cylindrical rechargeable battery
The li ion cylindrical rechargeable battery represents a significant advancement in portable energy storage technology. These batteries feature a distinctive cylindrical form factor, most commonly seen in the 18650, 21700, and 26650 formats. At their core, they utilize lithium-ion chemistry, comprising a lithium-based cathode, a graphite anode, and an electrolyte solution that facilitates ion movement. The cylindrical design offers inherent structural stability and optimal pressure distribution, making these batteries particularly resistant to physical stress and internal pressure buildup. The construction includes multiple layers of electrode materials wound in a spiral pattern, maximizing the active material surface area within a compact form factor. These batteries typically operate at nominal voltages between 3.6V and 3.7V, delivering energy densities ranging from 250-300 Wh/kg. Their applications span various sectors, from consumer electronics like laptops and power tools to electric vehicles and energy storage systems. The cylindrical format also incorporates built-in safety features, including pressure relief mechanisms and thermal protection, ensuring reliable operation across diverse usage conditions.