Applying a sufficiently high test voltage and detecting electrical flashovers during the test can help to identify defective cells that pose a risk of future internal short circuits (due to partial punctures or perforations in the separator).
As electric vehicle technology advances into the fast charging era, lithium-ion batteries face increasingly severe challenges regarding safety and lifespan under high-rate charging. One of the most critical concerns is the phenomenon of lithium plating—when the charging current is too high or the temperature is too low, lithium-ions fails to intercalate effectively into the anode and instead deposit as metallic lithium on the surface of the graphite.
Chroma has introduced a battery reliability test system integrated with EIS functionality, enabling automated switching between DC charge/discharge and AC impedance measurements. This innovation eliminates the need for separate EIS testing stations: battery connections are made once with no need for repeated handling or rewiring, which significantly reduces labor demands and operational errors.
The Chroma 8630 BMS Power HIL Testbed incorporates this technology to form a complete BMS test platform by combining cell simulators with virtual DUTs. This supports dynamic real and virtual scenarios, fault injection, and model integration testing, significantly reducing cost of test and making it a highly efficient tool for battery development and testing.
The Chroma 17010/17010H Battery Cell Charge/Discharge Test System has been adopted and endorsed by major battery cell manufacturers, automotive companies, and energy storage system providers worldwide. This is due not only to its high accuracy in charge and discharge measurements, low output noise, and multi-layered software and hardware safety features, but also to its flexible integration of control commands for safety-oriented environmental chambers.
Chroma has partnered with Altair, a global leader in computational intelligence, and Tron Energy to launch an advanced dynamic battery charge-discharge testing collaboration. This project aims to enable verification and enhancement of battery performance and lifespan through leading-edge equipment and precise simulation technology.
The Chroma 8630 BMS Power Hardware-in-the-Loop (HIL) Testbed provides a Pack Voltage and Isolation Impedance Simulator that allows users to easily perform the tests mentioned above. The programmable voltage simulator enables replication of various voltage drops caused by poor connections.
Chroma’s newest entry in its 17010 Series, Model 17208M-5-12C, is an ultra-high precision charge-discharge tester specifically built for this application. With measurement precision reaching up to <±0.001% of F.S., this system provides a highly accurate and efficient solution for battery degradation assessment.
The Chroma 8630 BMS Power HIL (Hardware in the Loop) Testbed integrates various equipment simulations with a real-time control system to verify the balancing functionality of BMS. This includes single-channel currents up to 5A, suitable for testing active balancing mechanisms in a multi-channel cell simulator.
Energy storage systems have important and specific parameters for PCS performance, such as a charge and discharge response times not exceeding 0.5 seconds, a minimum sustained runtime of 15 minutes, and a system round-trip efficiency of over 85%. Therefore, PCS need to undergo a range of comprehensive tests, including charge/discharge testing, efficiency testing, and anti-islanding protection testing…
