13300 3.85V Cylindrical Lithium Polymer Battery

Cylindrical Lithium Polymer Battery Structure Overview

The cylindrical lithium polymer battery (13300, 3.7V class) is built by engineers in a tightly controlled rolled electrode architecture. They start by stacking cathode, anode, and separator sheets into a continuous laminate and they roll the structure into a tight spiral core. In the meantime, they place the wound element into a fine metal casing and stabilize its internal structure and then preparation starts. Subsequently, technicians fix electrode positioning to ensure that there is uniform pressure of the layers across the cell.

Material System and Electrochemical Components

The cathode material is created by coating lithium metal oxide active materials onto aluminum foil, and the anode structure is created by coating graphite-based slurry onto copper foil. Moreover, they add a PP/PE multilayer separator to preserve ionic transport without internal contact between electrodes. Moreover, they make an organic carbonate electrolyte with lithium hexafluorophosphate, and they ensure that the moisture content is kept at a minimum to prevent chemical instability. In the meantime, the cylindrical shell is made of high-strength steel or aluminum alloy to provide structural rigidity in the course of processing.

Electrode Winding and Assembly Process

Technicians cut electrode sheets and roll them into automated winding machines into thin strips. They then regulate the winding tension and alignment to avoid deformation and uneven layering. They then roll the core and place it into the cylindrical housing and bond the bottom terminal with conductive bonding. They then fit the top cap assembly and use laser or resistance welding to finish the electrical interface. In the meantime, they check dimensional consistency to guarantee constant internal compression.

Formation Cycling and Standard Compliance Control

Formation cycling is initiated by engineers to stabilize the solid electrochemical reactions and interphase layer of the electrolyte within the cell. Then, they perform aging tests with controlled temperature conditions to test voltage stability and impedance behavior. Lastly, quality teams carry out dimensional inspection, internal resistance measurement, and sealing verification. During manufacturing, they adhere to IEC 62133 and UN38.3 requirements, which guarantee structural integrity, electrical consistency, and compliance with transport safety in manufacturing cylindrical lithium polymer batteries.

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 extensive safety examinations.

5. True Rated Capacity

Equates the product design capacity.

6. Multi-Chemistry Options

Includes 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 can be used in many portable and powered electronic devices and common uses are:

• Personal Care & Health: Fitness Trackers, Electric Toothbrushes, Beauty Devices, Medical Devices.
• Smart Digital & Audio: Headphones, Speakers, Nebulizers, Toys, Lights.
• Financial Payment & Office: POS Machines, USB Tokens, Portable Printers.