111640 Lithium Polymer Pouch Battery

Lithium Polymer Pouch Battery Structure Description

A Lithium polymer pouch battery is built by manufacturers by stacking the electrode layers in an aluminum-plastic pouch, with tabs on each end. They initially position cathode and anode sheets in an exact staggered pattern and place a microporous separator between them to ensure electrical isolation. Then, engineers stretch current collector tabs in opposite directions, and they adjust the alignment in the stacking process. Then, employees insert the finished electrode assembly into the pouch casing and position it properly before starting the preparation.

Material Composition and Layer Design

To create the cathode layer, producers apply lithium metal oxide materials to aluminum foil, and to create the anode layer, producers apply a slurry made of graphite to copper foil. In the meantime, they present a polyethylene and polypropylene multilayer separator to facilitate ion transport and prevent internal contact. Moreover, they choose aluminum-plastic composite film as the outer enclosure material, and this design integrates barrier protection and mechanical flexibility. The technicians then inject lithium salt electrolyte dissolved in organic carbonate solvents, and they make sure that all electrode surfaces are uniformly penetrated.

Electrode Tab Configuration and Connection Method

At one end of the cell, engineers place aluminum cathode tabs and copper or nickel-coated anode tabs. Then, they connect the tabs to the current collectors with ultrasonic or resistance welding machines. Meanwhile, they insulate the tab exit area to avoid edge shorting. Once the welding is done, operators carefully route the tabs out of the pouch, and they check that the tabs are properly aligned to prevent stressing internal layers, and then they close.

Standards and Manufacturing Control System

During production, quality teams adhere to IEC 62133 and UN38.3. During various steps, they check dimensions, weld strength, and insulation resistance. Moreover, they assess capacity and align internal resistance to ensure consistency of batches. Lastly, they perform vibration, thermal shock, and high-temperature storage tests and ensure that every cell is of the necessary safety and manufacturing specifications.

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