701660 3.7V 650mAh 리튬 폴리머 배터리

A 3.7V 650mAh lithium polymer battery adopts a single-cell pouch structure and maintains a nominal voltage of 3.7V with a full-charge limit of 4.2V. Meanwhile, the cell capacity is controlled at 650mAh through strict electrolyte dosing and electrode matching, which stabilizes energy storage behavior across production batches. In addition, designers regulate internal impedance to keep voltage response consistent under varying load conditions.

Materials Composition and Cell Architecture

Manufacturers construct the battery using layered lithium cobalt oxide or nickel-based cathode coatings combined with graphite anodes. Furthermore, aluminum-plastic composite film forms the external pouch, which seals internal chemistry while maintaining flexibility. Copper and aluminum foils act as current collectors, and they are precisely coated to enhance electron flow efficiency. Meanwhile, microporous separators are inserted between electrodes to reduce internal short-circuit risks and maintain ionic stability during operation.

조립 및 용접 공정

During fabrication, cells are first selected and grouped according to voltage tolerance and impedance matching. Subsequently, automated spot welding machines connect nickel tabs to establish stable electrical pathways, while minimizing thermal stress on the cell body. After that, technicians integrate a protection circuit module (PCM) to control overcharge, over-discharge, and over-current behavior. Additionally, insulated leads and connectors are fixed to ensure stable external electrical connection without loosening under vibration.

Packaging and Structural Finishing

Once the internal assembly is completed, the pouch cell is sealed using heat-lamination technology to prevent electrolyte leakage and moisture ingress. Moreover, outer insulation layers are applied to enhance mechanical strength and improve dimensional stability. At the same time, engineers verify sealing integrity through pressure and insulation tests before the final encapsulation stage.

Standards and Electrical Regulation

Production generally follows lithium-ion safety frameworks such as UN38.3 transport testing, CE conformity, and RoHS material restriction requirements. Furthermore, charging control is implemented through constant-current/constant-voltage (CC/CV) algorithms, limiting maximum cell voltage to 4.2V. In addition, cycle reliability is evaluated through repeated charge-discharge testing under controlled temperature conditions to ensure stable electrochemical performance throughout manufacturing validation stages.

제품 특징

1. 🛠️ 커스터마이징 가능
   고객 요구에 맞게 맞춤화 가능하다
2. ⚡ 하이파워
   최대 20C 방전 가능 가능
3. ⏱️ 긴 주기 수명
   장기적인 제품 사용 요구를 충족합니다
4. 🛡️ 높은 안전성
   종합 안전 시험 통과
5. 🔋 진정격 용량
   제품 설계 역량에 부합합니다
6. ⚛️ 다중 화학 옵션
   LCO, NCM, NCA 및 LFP 시스템을 다룹니다
7. 🧰 다중 보호 메커니즘
   과충전, 과방전, 과전류 및 단락 방지 기능이 포함된 내장 보호 보드

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