BT2200 Charge-Discharge Platform

• Cost-effective, easily configurable Li-Ion cell charge-discharge

• Modular configurations with maximum current from ± 6 A to ± 800 A, up to 256 user channels per chassis

• Supports cell formation and lifetime cell cycling on small and large capacity cells

New Challenges in Li-Ion Cell Formation and Cycling

The future of electric mobility has arrived, and the demand for Li-Ion batteries has dramatically increased. Li-Ion cell manufacturing and test environments are dynamic as massive new investments drive an increase in manufacturing and cycling capacity. The rapid growth of EVs is creating demand for a growing mix of Li-Ion cell types and capacities, while demand from traditional portable applications continues to grow as well.

The entire range of Li-Ion cell manufacturing faces intense pressures related to unit costs, material availability, return on investment, and safety. Cell manufacturers must expand capacity quickly, beginning with a prototype, laboratory-scale, or pilot cell assembly and formation processes for new cell designs. These relatively small "production lines" need versatile formation equipment scaled to the size of the line. Large formation processes dedicated to one cell type and optimized for very high unit volumes cannot meet the needs of quick reconfiguration for a pilot line to handle different cell designs.

Larger cells and new technology are working together to meet consumer demand for longer-range EVs. Also, new technology allows the creation of cells that can charge faster. An affordable cycler can test a sample of cells and determine the cell's cycle life and how the charge rate affects the cell's life. As cell capacity quickly increases, researchers, and manufacturers, need a flexible solution to source and sink larger currents. Also, the solution needs to be costeffective to deploy in large numbers and test cells with long cycling times.

BT2200 Charge-Discharge Platform

The BT2200 charge-discharge platform is cost-effective and easily configurable for Li-Ion cell formation and lifetime cell cycling. Modular configurations support cells requiring maximum currents ranging from  ± 6 A to ± 800 A, with up to 256 cells or channels per chassis. You can quickly deploy different channel configurations as your cell requirements and capacities change by simply changing the external wiring connections to create new parallel combinations of physical channels for cells requiring higher- or lowercurrent.

The BT2200 series offers two chassis.

• BT2202A charge-discharge chassis 400/480 VAC 3-phase

• BT2203B charge-discharge chassis 200/208 VAC 3-phase

Select from two charge-discharge modules.

• BT2204B charge-discharge module offers thirty-two physical channels capable of up to ± 6.25 A charge-discharge, and 6 V. Create a user-defined channel with twice the current by connecting two channels in parallel. Triple the current using three channels. Paralleling all 32 channels provides a charge-discharge current of up to ± 200 A.

• BT2205A charge-discharge module has two physical channels, each capable of up to ± 100 A charge-discharge and 6 V. Parallel the two physical channels create a single user channel up to ± 200 A. Physical channels on more than one BT2205A module can be in parallel for even higher current up to ± 800 A.

• Up to eight modules fit in a single chassis. All modules in a chassis need to be the same type, either all BT2204B or BT2205A.

Multiple Cell-Formation and Lifetime Cycling Solutions to Fit Your Process

Keysight can work with you on your formation process or lifetime-cycler project to provide the right level of capability for your application. Keysight can provide:

• The BT2200 hardware that you integrate into your systems.

• Stations combining the charge-discharge hardware, cabling and fixturing, and the software to manage station operation and all your test data.

• A complete process for cell formation or lifetime cell cycling, that builds upon stations and adds cell trays, material handling, temperature chambers and aging facilities.