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Battery cell test suite targets EVs, home energy management

Battery cell test suite targets EVs, home energy management

New Products |
By Rich Pell



The global electric vehicle market—ranging from mild hybrids to battery electric vehicles is growing fast with a large number of new application areas and implementations. As a result, cell and battery system makers are facing challenges to deal with the exponential demand for costly, high-power/high-voltage cells in the 300 V range.

Keysight has combined several test systems to address this, from regenerative power to self-discharge measurement.

The EV1003A Power Converter Test System is designed specifically to address the efficiency, safety, regulatory and environmental challenges associated with the HEV/EV and HEMS markets. It is currently the only commercial off-the-shelf regenerative power system with integrated safety features.

The RP7900 Series Regenerative Power System offers battery emulation capabilities, such as 2-quadrant (source/sink) operation and programmable output resistance. In addition, the power system provides the added benefit of safely and cleanly regenerating greater than 85 percent of power back into the grid—which increases efficiency based on reduced energy consumption and cooling requirements.

The BT2191A Self-Discharge Measurement (SDM) System provides a new way to accurately measure Li-Ion cells’ self-discharge currents in a significantly reduced amount of time and with a settling time as low as one to two hours. This new patented technique allows engineers to dramatically reduce the design cycle-time and helps to optimize self-discharge performance and characteristics of battery cells.

The BT2152A Self-Discharge Analyzer (SDA) measures in parallel self-discharge currents on a large number of cells, providing a significant reduction in the time required to discern good versus bad cell self-discharge performance. This helps achieve dramatic reductions in work-in-process inventories, working capital and facility costs.

“As higher-voltage batteries and devices are added to electric vehicles, and the push for e-mobility-based concepts continues, designers and manufacturers need to deal with economic challenges while mitigating safety risks and ensuring high quality products for end-users at the same time,” said Siegfried Gross, vice president and general manager of Keysight’s Automotive & Energy Solutions business unit.

“Keysight has in-depth experience in power electronics—from generation to conversion—and moving it from source to load. We will continue to focus our innovations on design and test solutions, which will help to advance battery, EV/HEV and HEMS applications and implementations from an economic, performance and safety perspective across the entire lifecycle.”

More information is available at www.keysight.com.

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