701335 3.7V 소형 리튬 배터리 팩

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.

샘플 제작, 가공 및 맞춤화 가능

제품 특징

• 🔋 진정한 용량: 신뢰할 수 있는 정격 출력과 장기 용량 저하가 감소합니다.
• 🔌 저자기 방전: 장기간 저장 기간 동안 안정적인 전력을 유지합니다.
• ⚡ 높은 방전 성능: 낮은 저항은 안정적인 3A 연속 출력을 보장합니다.
• 🛡️ 향상된 안전성: 과충전, 과방전, 단락에 대한 다중 보호 장치.
• 📦 컴팩트 파우치 구조: 슬림한 디자인은 컴팩트 전자 조립체에 적합합니다.
• ⚙️ OEM/ODM 제공: 맞춤형 탭, 리드, 터미널 구성.

적용 시나리오

저희 리튬 배터리는 개인 위생용품, 스마트 전자제품, 소비자 기기, 의료 장비 등에서 널리 사용됩니다.

• 개인 관리 및 건강: 전동 칫솔, 피트니스 트래커, 의료기기
• 스마트 디지털 및 오디오: 헤드폰, 스피커, 조명
• 소비자 및 엔터테인먼트: 장난감, 전자제품