12500 3.85V リチウムイオン円筒電池

Li-ion Cylindrical Battery Cell Structure Overview

Manufacturers construct the Li-ion cylindrical battery using a tightly wound jelly-roll architecture inside a rigid metal shell. First, they align the cathode, anode, and separator layers into a continuous laminate sheet, and they roll this assembly into a compact cylindrical core. Meanwhile, engineers insert the rolled structure into a precision-machined steel or aluminum casing. After that, they stabilize internal alignment and prepare the cell for subsequent electrolyte processing under controlled environmental conditions.

Material Composition and Electrode System

Producers apply lithium metal oxide compounds onto aluminum foil to form the cathode layer, while they coat graphite-based slurry onto copper foil to build the anode layer. In addition, they introduce a microporous polyethylene–polypropylene separator to maintain ionic conduction and prevent direct electrode contact. Furthermore, they select a lithium salt electrolyte such as LiPF6 dissolved in organic carbonate solvents, and they ensure chemical stability throughout the system. Meanwhile, the cylindrical housing uses high-strength steel or aluminum alloy to maintain structural integrity under pressure conditions.

電極巻線および組立プロセス

Technicians cut electrodes into precise strips and then feed them into automated winding equipment. Subsequently, they roll the multilayer stack into a uniform cylindrical “jelly-roll” form while controlling tension and alignment. Then, they insert the wound core into the metal can and connect the bottom electrode to the casing base. After that, they install the top cap assembly and weld it using laser or resistance welding techniques. At the same time, they verify internal positioning to avoid deformation during sealing.

Formation Cycling and Industry Standards Compliance

Engineers execute formation cycling to activate electrochemical reactions and stabilize solid electrolyte interphase layers inside the cell. Then, they conduct aging tests under controlled temperature conditions to evaluate voltage consistency and impedance stability. Finally, quality teams perform dimensional inspection, internal resistance measurement, and safety verification. Throughout production, they comply with IEC 62133 and UN38.3 standards, and they validate mechanical strength, electrical reliability, and transport safety requirements for Li-ion cylindrical battery manufacturing.

製品の特徴

1. 🛠️ カスタマイズ可能
   顧客の要望に合わせてカスタマイズ可能
2. ⚡ ハイパワー
   最大20°Cの放電率が利用可能です
3. ⏱️ 長周期寿命
   長期的な製品使用ニーズを満たします
4. 🛡️ 高い安全性
   包括的な安全試験に合格
5. 🔋 真定格容量
   プロダクトデザイン能力に合致します
6. ⚛️ 多化学オプション
   LCO、NCM、NCA、LFPシステムをカバーしています
7. 🧰 多重保護機構
   過充電、過放電、過電流、ショート回路保護を備えた内蔵保護ボード

製品応用分野

この製品は、さまざまな携帯型および電源型電子機器に適しており、典型的な用途は以下の通りです:

• パーソナルケアと健康: 電動歯ブラシ、美容機器、フィットネストラッカー、医療機器

• スマートデジタル&オーディオ: ヘッドホン、スピーカー、ネブライザー、おもちゃ、ライト

• 金銭的支払いとオフィス: POSマシン、USBトークン、ポータブルプリンター