SL1132A Scienlab Scienlab Battery Test Solution – Up to ±25 A

The SL1132A Scienlab Battery Test Solution is an innovative, compact, and efficient solution for characterizing and testing battery cells. The space-saving combination of power electronics, test chamber and sophisticatedly developed cell holders not only enables the testing of large quantities of cells in the smallest space but is also flexible in use. The defined fixtures accept a range of pouch cells, ensuring accurate measurement result

Both cell testing solutions and the cell aging solution provide a central connection point on the chamber for all media (power, water, nitrogen, compressed air, and data communications) that simplifies system installation, ensures fast commissioning and easy maintenance, and minimizes both time to test and service costs. The SL1132A provides a comprehensive safety concept that prevents possible dangers in test laboratories before they occur, helping to keep your testing safe.

Power Electronics

All higher-power Scienlab Battery Test Systems from Keysight have high regeneration capabilities, allowing efficient, cost-effective, and environmentally-friendly operation. Thanks to the bi-directional power supply, more than 90 % of the energy is fed back into the AC grid during cell discharge. The system also offers automatic calibration to decrease ongoing service costs.

The SL1132A is protected against overheating, overcapacity, short circuit and idling. It also has reverse polarity protection and monitors all internal voltages, currents and temperatures. In the case of an emergency shutdown, contacts on the mains ensure that there is no voltage and all internal high voltage sources are automatically discharged.

The SL1132A has strong security for data acquisition and transmission. The Measurement and Control Unit (MCU) is an embedded system providing autonomous program sequence control and measurement data acquisition. This assures that a test will continue running even if communication with the system PC is lost. Communication among the elements of the test system (power electronics, chamber, cooling, system PC) is managed via Ethernet.

Temperature Chambers and Cell Fixtures

The two available system environmental chambers (60- and 150-channels) offer homogeneous cooling/heating of the cells through optimal air flow. One of these chambers (SL1050A-S06 or SL1050A[1]S07) must be ordered with the SL1132A Scienlab Battery Test Solution – Cell Level.

The modular cell fixture system is designed to accommodate a variety of pouch cells that have both tabs on the same edge of the cell. Individual pouch cells are secured between two plates on a cell carrier, and the cell tabs are securely held against electrical contacts on the carrier. The carrier assembly is inserted into a chassis that holds 5 of the carriers. Groups of these 5-slot chassis are combined to create fixtures for all the cells held in the chamber – either four sets of three chassis comprised of 15 cells each in the 60-channel system, or 30 sets of 5-slot chassis for a total of 150 cells in the 150-channel system. These cell fixtures have been designed to precisely fit inside the rooms of both types of chambers. The defined DUT fixtures and pre-assembled wiring enable precise measurement results.

Each cell carrier can accommodate a range of pouch cell dimensions:

•  Up to 80 mm width

•  Up to 125 mm length (without tabs)

•  Thickness from 2.8 to 5.0 mm

The cell carrier for each cell can be removed from its 5-slot chassis and replaced without affecting the rest of the cells in the carrier. You can load spare cell carriers with cells while other cells are being tested, so that you can quickly unload a chamber at the end of a test and reload the chamber to start the next test, without sacrificing test time while you unload or load individual cells from their carriers.

To test different types of cells, such as prismatic cells or pouch cells with different contact tab geometries, or for more information on the contacting system, please contact Keysight to discuss a custom cell fixturing solution to meet your needs.

Electrochemical Impedance Spectroscopy (EIS)

You can gain deeper insights into the characteristics of your cells with the optional EIS capability. This provides integrated electrochemical impedance spectroscopy measurements per test-channel, independently programmable within a test sequence.