US-based test and measurement firm Tektronix has introduced its EA-BIM 20005 Battery Impedance Meter equipped with advanced multi-sine stimulus technology, enabling impedance measurements at multiple frequencies simultaneously.

The EA-BIM 20005 can also perform sweep measurements, offering flexibility in testing approaches. The meter can test up to 20 channels with fast multiplexing and has a front panel showing 20 channels for electrochemical impedance spectroscopy (EIS) measurements, plus 20 channels for temperature sensors.

It features industry-standard interfaces and a compact design for seamless integration to help engineers to enhance accuracy and efficiency in battery testing workflows.

The EA-BIM 20005-10-20 model offers a frequency range from 1 MHz to 10 kHz, providing more information than fixed 1 kHz systems. This allows for a comprehensive analysis of battery cell behavior under various conditions, according to the company. The system’s AC stimulus can reach up to 10 A (peak-peak), making it suitable for testing cylindrical, pouch and prismatic cells.

Every EIS channel is accompanied by a high-precision 4-wire PT100 temperature measurement channel. This integration allows for simultaneous tracking of impedance and cell temperature, providing a more holistic view of battery performance and health.

The meter is designed to work seamlessly with cycle testing systems. Its integrated power stage enables the charging and discharging of cells with a current of +/- 1 A. For higher currents, it can also be used along with high-power battery test systems such as the EA-BCTS. The system can always remain connected, recognizing the influences of cabling and power stages of battery testers, thus eliminating the need to disconnect and reconnect cables for each test.

“By providing fast, accurate insights into Li-Ion battery cell quality through high-throughput battery impedance testing, this system enhances the efficiency and reliability of battery testing workflows,” Tektronix said.

Source: Tektronix