Agilent/Keysight BT2202A

The Keysight BT2202A is a modular charge-discharge chassis that serves as the mainframe for Li-ion cell formation and lifetime cycling test systems. It accepts up to eight BT2204B or BT2205A modules, enabling configurations from ±6 A to ±800 A across up to 256 cells or channels per chassis. The system regenerates power for improved efficiency and integrates LAN (LXI Core) and USB connectivity for direct control and data acquisition.

– Technical Specifications

• Input Power: 400 VAC or 480 VAC, 3-phase
• Module Capacity: 8 slots for BT2204B or BT2205A modules
• Maximum Cell Voltage: 6.0 V
• Maximum Cell Current: ±800 A (achieved through multi-module paralleling)
• Total Channels: Up to 256 cells or channels per chassis
• BT2204B Module: 32 channels per module, ±6.25 A per channel, 27.34 W per channel
• BT2205A Module: 2 channels per module, ±100 A per channel, 437.5 W per channel
• Paralleling Options: Two BT2204B channels yield ±12.5 A; three channels yield ±18.75 A. Two BT2205A channels yield ±200 A; up to eight channels across four modules yield ±800 A

– Key Features

• Flexible modular architecture supports mixed-module configurations
• Regenerative power capability enhances system efficiency
• Up to 256 unique sequences, each containing up to 50 steps
• Step types: charge, discharge, pre-charge, rest state, or DC internal resistance (DCIR) measurement
• DCIR utilizes user-defined DC pulse methodology
• Up to 24 test conditions per step, evaluated every second
• Monitored parameters: Voltage, Current, Power, Amp•Hours, Watt•Hours, ΔV/Δt, ΔI/Δt, ΔV, ΔI

– Typical Applications

• Research and development of advanced battery chemistries
• Manufacturing quality control and cell formation
• Electric vehicle battery validation
• Portable electronics battery lifecycle testing

– Compatibility & Integration

• Compatible with BT2204B and BT2205A charge-discharge modules
• BT2200 Charge-Discharge Platform evaluation software support
• LAN and USB control interfaces