801640-480mAh 3A High-Rate Soft Pack Cell

A 3A-class high-rate soft pack cell, 480mAh (3A), has a single lithium polymer pouch design. Engineers set the nominal voltage to 3.7V. They also limit the full charge to 4.2V. Moreover, they adjust internal resistance to a constant high current output. Cell capacity remains constant by means of rigid matching and electrolyte regulation. This minimizes variation in the case of rapid discharge.

Materials and Internal Structure

Lithium cobalt or mixed cathode materials are used by the producers. They combine them with graphite anodes. The cell has copper foil and aluminum foil that conduct current. In the meantime, a polymer separator prevents contact between the electrodes. It does not block ion flow. The outer pouch is made of aluminum-plastic laminate. It seals the chemistry and maintains the structure's flexibility.

Assembly and Electrical Setup

Technicians initially sort cells in terms of voltage and impedance. This is to enhance balance during final assembly. Then, they apply spot welding to attach nickel tabs. The welds form low-resistance paths and minimize heat stress. After that, they install a protection circuit module. It controls overcharge, over-discharge, and overcurrent. Moreover, they tie lead wires using strain relief. This eliminates loose connections during movement.

Sealing and Finishing Process

The pouch is closed with heat and pressure by manufacturers. This locks in the electrolyte and blocks moisture. After that, they make layers of insulation to reinforce the surface. These layers enhance structural stability as well. Once sealed, they check for leaks and insulation resistance. This checks the quality of the enclosure before packaging.

Standards and Charging Control

Production is in accordance with UN38.3, CE, and RoHS. These regulations include transport safety and materials. The charging is done on a CC/CV basis. The system restricts voltage to 4.2V/cell. Lastly, cycle testing is conducted at a controlled temperature. This ensures stability when used repeatedly at high rates.

Product Features

• Customization Supported: It can be customized based on customer requirements.
• High Power: Up to 20C discharge
• Fast Charging: Up to 3C charging
• Long Lifespan: Meets the criteria for long-term product usage.
• Multi-Material System: LCO, NCM, NCA, LFP, and other material systems.
• High Safety: Fails safety performance tests.
• Adequate Capacity: Adequate product design capacity.
• High Temperature Resistance: Operating temperature range: -20℃ ~ 80℃

Application Scenarios

• Electronic Atomizers
• Voice Recorders
• Headphones
• Beauty Devices