450840 Single Cell Rechargeable LiPo Battery

Single-Cell Rechargeable LiPo Battery Structural Overview

The 450840 single-cell rechargeable LiPo battery is designed by engineers in the form of a compact pouch cell with a layered internal structure. To begin with, they stack the cathode, separator, and anode in a flat arrangement to ensure that the thickness of the cell body is uniform. Then, technicians position all the layers to minimize internal movement during sealing and cycling. In the meantime, insulated films are used between conductive parts to enhance structural stability and electrical isolation. Once positioned, the cell goes through the lamination and pouch-forming phase.

Electrode Materials and Internal Chemistry

The cathode is made of lithium metal oxide coated on aluminum foil by the manufacturer, and the anode is made of graphite material deposited on copper foil. Moreover, between the electrodes, a microporous polymer separator is inserted to facilitate the transfer of lithium ions but not direct contact. Moreover, the electrolyte includes lithium salts that are dissolved in organic carbonate solvents, and moisture is strictly regulated during injection and sealing. In the meantime, the outer pouch is made of aluminum-plastic laminated film rather than a solid metal shell, which contributes to a thin and flexible design.

Cell Fabrication and Lamination Process

Technicians start with active materials, conductive additives, and binders mixed into a homogeneous electrode slurry. Automated coating machines are then used to apply the slurry evenly on metal foils. The electrodes are dried and then subjected to calendaring rollers to attain constant density and thickness. The coated materials are then sliced into the exact sizes and assembled into layered forms. In the meantime, alignment equipment tests positioning accuracy in front of the cell, which is then sent to lamination and packaging.

Formation Testing and Compliance Standards

Initial charge-discharge cycling is done by engineers to turn on the electrochemical system and stabilize internal interfaces. Subsequently, aging tests are used to test the voltage retention and consistency of internal resistance with time. Lastly, insulation resistance tests, sealing tests, and electrical tests are done before shipment. During the manufacturing process, the single-cell rechargeable LiPo battery is in compliance with IEC 62133 and UN38.3 safety standards, which guarantee structural reliability, electrical safety, and transportation compliance.

Product Features

1. Large Capacity and Constant Production.

True ability with low self-discharge to provide steady and long-lasting power.

2. Multi-Protection Safety Design

In-built safeguards against overcharge, over-discharge, over-current, and short circuits.

3. Flexible Customization

Helps to add wires, PCBs, and connectors to fit a particular requirement.

4. Long Cycle Life

Constructed to be used in stable conditions through cyclic charge and discharge.

5. Wide Application Range

Appropriate for different portable and compact electronics.

6. Factory Direct Supply

Stringent quality control, rapid sample support, and OEM service.

Product Application Areas

Perfect for portable and everyday-use electronics that need safety, extended cycle life, and small size.

• Personal Care: Sports bracelets, Electric toothbrushes, Medical devices.
• Audio and Entertainment: Toys, Headphones, and Speakers.
• Daily Electronics: LED lights, General electronic products.