112038 Rechargeable LiPo Battery 3.7V

Rechargeable LiPo Battery 3.7V Structure Overview

Manufacturers construct the rechargeable LiPo battery 3.7V using a laminated pouch architecture that combines stacked electrodes and flexible sealing materials. First, engineers align cathode and anode foils into a controlled stack structure, and they insert a microporous separator between each layer to maintain ionic isolation. Meanwhile, they position current collector tabs with precision to ensure stable electrical routing. After that, they transfer the assembled core into an aluminum-plastic composite pouch, and they adjust internal alignment before sealing preparation begins.

Material System and Electrode Composition

Producers apply lithium metal oxide materials onto aluminum foil to form the cathode layer, and they coat graphite-based slurry onto copper foil to create the anode structure. In addition, they mix conductive additives and polymer binders into the slurry to maintain uniform dispersion during coating. Subsequently, they dry the coated electrodes under controlled thermal conditions to remove residual solvents, and they perform calendering to stabilize thickness and surface density. Moreover, they select multilayer PP/PE separator films to support ionic transfer while preventing internal short circuits.

Electrode Fabrication and Assembly Process

Technicians begin electrode processing by cutting coated foils into defined dimensions, and they carefully control edge quality to avoid burr formation. Then, they stack electrodes and separators in alternating order, and they maintain strict alignment using automated fixtures. After that, they weld aluminum and copper tabs using ultrasonic or resistance welding methods, and they reinforce tab junctions with insulation layers. Meanwhile, they route the tab structure outward from the pouch edge while preserving internal spacing integrity.

Formation, Testing, and Standard Compliance

Engineers initiate formation cycling to activate electrochemical interfaces and stabilize SEI layers under controlled charge-discharge profiles. Subsequently, they conduct aging tests to evaluate voltage behavior and impedance stability over time. Finally, quality teams execute dimensional inspection, insulation resistance measurement, weld strength verification, and leakage detection. Throughout production, they comply with IEC 62133 and UN38.3 standards, and they ensure each rechargeable LiPo battery 3.7V meets strict manufacturing consistency and transport safety requirements.

Product Features

1. 🛠️ Customizable
   Customizable to meet customer requirements
2. ⚡ High Power
   Max. 20C discharge rate available
3. ⏱️ Long Cycle Life
   Meets long-term product usage needs
4. 🛡️ High Safety
   Passed comprehensive safety tests
5. 🔋 True Rated Capacity
   Matches the product design capacity
6. ⚛️ Multi-Chemistry Options
   Covers LCO, NCM, NCA and LFP systems
7. 🧰 Multi-Protection Mechanism
   Built-in protection board with overcharge, overdischarge, overcurrent and short-circuit protection

Product Application Areas

This product is suitable for a variety of portable and powered electronic devices, with typical applications including:

• Personal Care & Health: Electric Toothbrushes, Beauty Devices, Fitness Trackers, Medical Devices

• Smart Digital & Audio: Headphones, Speakers, Nebulizers, Toys, Lights

• Financial Payment & Office: POS Machines, USB Tokens, Portable Printers