lithium ion battery formation

A custom integrated piece of equipment for square aluminum-shell batteries provides numerous functions; a Battery Charge Discharge Tester, a negative pressure formation system and a complete data management system. The equipment can accurately measure important parameters of a battery, such as voltage and capacity. The negative pressure vacuum system can easily vary, and operate in the formation process, from -100KPa to 0KPa. An integrated electric clamping self-holding tray is designed to provide secure contact with the battery terminals and fixtures. The hardware used is a bidirectional DC/DC type, providing efficiencies above 80% while also hardly producing any heat and provide short responding times. It is able to self-calibrate, communicates via TCP/IP, and can log data at every one second, giving real-time updates as the data is uploaded to dedicated servers. Another unique aspect is that it has a multi-channel independent protection system, which provides 12 built-in protection programs, such as overvoltage, undervoltage and reverse polarity protections not only providing a safer production environment. It also provides programming with 32 programmable steps, with the capacity to perform up to 256-cycle tests, to produce variances of aluminum-shell battery sizes (lengths 80-300mm), to provide manufacturers with the flexibility to implement numerous applications according to demand in required production.

 

High-Performance Testing: Equipment operates 128 independent constant current/voltage sources per channel and can respond to start/stop commands within 50 milliseconds. It can operate continuously in an offline mode for up to 12 hours and can restore data from a defined breakpoint, which significantly enhances production productivity.          

Smart Grading System: Contains an embedded Lithium Cell Grading Machine algorithm capable of automatically sorting batteries from the more than 10 parameters including capacity, voltage, or discharge characteristics. A modified scanning system is guaranteed throughout the process for full traceability with an expected grading accuracy of ±0.5‰, even if the chemistry is inconsistent due to market conditions.     

Precise Capacity Management: Uses AD/DA chips with high accuracy, and a Battery Tester For Lithium Batteries level sampling resolution (1mA/0.1mV). This equipment is able to be customized to lithium batteries for sampling. Because it offers various battery capacity calculation techniques (e.g., -△V charge termination; capacity loss analysis), this gives lithium batteries systems capable of highly responsive data visualizations on monitoring its period of data collection. There is a >99% grading pass rate.

 

 

 

 

 Benefits Mass Production: The 128 channels of parallel operation with the electric clamping system will process a batch of batteries four times more than traditional-style battery equipment making it very compatible with automated production lines producing thousands of units daily. The negative pressure reflux process helps mitigate electrolyte evaporation from a financial production cost perspective. 

Quality Inspection: The multi-parametric lithium cell grading system has specific characteristics (e.g., voltage, discharge current) for Class A batteries. The over-current measures and trends directly prevent non-conforming product from accidentally progressing into the markets. The 128 channel equipment can easily link with the user's MES systems to automatically acquire electronic data talking down more than 20 desirable key metrics to sustain a digital quality environment. 

Research and Development: In addition to the 64-step flexible programming for the equipment above, which allows little data alteration techniques for undertaking detail specific charge/discharge curves or capacity decay tests for new battery-related R&D initiatives, the facilitating automated calibration tools and database interface used to speed up data collection will achieve enormous time and efficiency in the intended validation periods.