16350 pile cylindrique lithium 3,7V

Cylindrical Lithium Battery Cell Structure Overview

Engineers construct the cylindrical lithium battery cell (16350 class, 3.7V nominal) using a compact spiral-wound architecture. First, they laminate cathode foil, anode foil, and separator membrane into a continuous electrode strip, and they wind it into a tightly controlled cylindrical core. Meanwhile, technicians regulate winding tension to keep layer spacing uniform and prevent internal misalignment. After that, they insert the rolled core into a precision metal shell and stabilize its position before electrolyte injection and sealing operations begin.

Système matériel et composition électrochimique

Manufacturers coat lithium transition-metal oxide onto aluminum foil to form the cathode layer, while they apply graphite-based slurry onto copper foil to build the anode layer. In addition, they introduce a PP/PE microporous separator to maintain ionic conduction while blocking direct electrode contact. Furthermore, they prepare an organic carbonate electrolyte containing lithium hexafluorophosphate (LiPF6), and they strictly control moisture content during handling. Meanwhile, the cylindrical housing uses steel or aluminum alloy to ensure mechanical strength and pressure resistance during assembly.

Fabrication et procédé d’enroulement des électrodes

Technicians prepare electrode slurry by mixing active materials, conductive carbon, and polymer binders into a uniform suspension. Then, they coat the slurry onto metallic current collectors using precision coating equipment and dry it through staged thermal ovens. Subsequently, they apply calendaring pressure to control thickness and density consistency. After cutting the electrodes into narrow strips, they feed them into automated winding machines to form a compact jelly-roll structure. At the same time, they weld electrode tabs using ultrasonic or resistance techniques to ensure stable electrical connection.

Système de cyclage de formation et de conformité standard

Engineers initiate formation cycling to activate electrochemical reactions and stabilize the solid electrolyte interphase layer inside the cell. Then, they conduct aging tests under controlled temperature environments to evaluate voltage stability and impedance behavior. Finally, quality teams perform dimensional inspection, internal resistance measurement, and sealing verification. Throughout production, manufacturers comply with IEC 62133 and UN38.3 standards, ensuring structural integrity, electrical consistency, and transport safety compliance for cylindrical lithium battery cell manufacturing.

Caractéristiques du produit

1. 🛠️ Personnalisable
   Personnalisable pour répondre aux besoins des clients
2. ⚡ Puissance élevée
   Débit maximal de 20°C disponible
3. ⏱️ Durée de vie longue
   Répond aux besoins d’utilisation à long terme des produits
4. 🛡️ Sécurité élevée
   A réussi des tests de sécurité complets
5. 🔋 Capacité réelle nominale
   Correspond à la capacité de conception du produit
6. ⚛️ Options multi-chimique
   Couvre les systèmes LCO, NCM, NCA et LFP
7. 🧰 Mécanisme de protection multiple
   Carte de protection intégrée avec protection contre la surcharge, la surcharge, la surcharge et les courts-circuits

Domaines d’application des produits

Ce produit convient à une variété d’appareils électroniques portables et électriques, avec des applications typiques telles que :

• Soins personnels et santé : Brosses à dents électriques, appareils de beauté, traqueurs d’activité, dispositifs médicaux

• Digital intelligent et audio : Casques, haut-parleurs, nébuliseurs, jouets, lumières

• Paiement financier et bureau : Machines POS, jetons USB, imprimantes portables