701335 3.7V小型リチウムバッテリーパック

A 3.7V small lithium battery pack integrates lightweight lithium-ion pouch cells with precise voltage control architecture. Manufacturers typically configure the pack in a single-cell (1S) structure, and therefore it maintains a nominal output of 3.7V with a full charge threshold of 4.2V. Meanwhile, engineers carefully stabilize discharge cut-off near 2.75V to prevent deep depletion and cell stress. As a result, electrical behavior remains consistent across repeated charge cycles.

Cell Composition and Materials

The pack commonly uses lithium cobalt oxide or blended lithium-ion chemistry, combined with aluminum-laminated polymer film. In addition, internal electrodes are arranged through layered coating technology, which improves ionic conductivity and structural uniformity. Copper and aluminum current collectors are selected to reduce internal resistance while maintaining stable electron transfer. Furthermore, insulating separators are inserted between electrodes to prevent internal short circuits and ensure structural safety under vibration conditions.

Structural Design and Assembly Process

During production, cells are first matched by capacity and impedance to reduce imbalance within the pack. Next, spot welding connects nickel strips to form a secure electrical pathway, and this process minimizes thermal distortion. Subsequently, a protection circuit module (PCM) is integrated to manage overcharge, over-discharge, and over-current conditions. After assembly, technicians apply encapsulation using heat-shrunk polymer or laminated casing, which strengthens mechanical integrity and improves sealing performance. In addition, quality control teams perform voltage calibration and load testing before final packaging.

Manufacturing Standards and Testing

Production follows internationally recognized safety and transport standards such as UN38.3, CE, RoHS, and UL compliance requirements. Moreover, manufacturers apply constant-current/constant-voltage (CC/CV) charging profiles, typically limiting charge voltage at 4.2V per cell. Cycle testing is also conducted under controlled temperature conditions to evaluate capacity retention across long-term usage. Finally, insulation resistance tests and short-circuit protection validation are executed to ensure structural reliability and electrical stability throughout the product lifecycle.

サンプル作成、処理、カスタマイズが可能です

製品の特徴

• 🔋 真容量:信頼性の高い定格出力で、長期的な容量のフェードが少ない。
• 🔌 低自己放電:長時間の貯蔵期間中も安定した電力を維持します。
• ⚡ 高い放電性能:低抵抗により安定した3A連続出力が保証されます。
• 🛡️ 安全性の向上:過充電、過放電、ショートサーキットに対する複数の保護機能。
• 📦 コンパクトポーチ構造:スリムなデザインはコンパクトな電子アセンブリに適合します。
• ⚙️ OEM/ODM対応:タブ、リード、端末構成のカスタマイズ可能。

応用シナリオ

当社のリチウムバッテリーは、パーソナルケア、スマート電子機器、消費者向け機器、医療機器などで広く使用されています。

• パーソナルケア&ヘルス:電動歯ブラシ、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、ライト
• 消費者・エンターテインメント:おもちゃ、電子製品