As electric vehicle (EV) technology advances, the on-board charger (OBC) has become a core module integrating power electronics and vehicle communications. Because architectures and protocols vary by OEM, test systems face varied and demanding requirements, especially in terms of real-time responsiveness and protocol handling.
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.
At the CharIN Testival North America 2025, Chroma’s EV & EVSE charging test solution stood out among numerous international participants, winning third place in the test equipment category. This event is one of the world’s premier platforms for electric vehicle (EV) charging interoperability testing.
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 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.
BatteryPro continuously receives and processes the BMS data used to monitor battery temperature and voltage. It also utilizes BMS signals with a user-defined unique identifier (ID) to receive BMS data under constant current (CC), constant current-constant voltage (CC-CV), constant power (CP), or constant voltage (CV) mode.
Chroma’s compatibility and functional testing systems for EVSE have already been adopted by a great variety of domestic and foreign testing labs. Many EVSE manufacturers also use our solutions for end-of-line testing in their factories. Besides testing the charging process and safety mechanisms, one of the most important test items for multi-coupler EVSE products is power sharing (load management) testing.
Computer chip specifications are evolving at a rapid pace. This drives industry associations and other organizations in the power conversion field to keep raising their efficiency requirements and certification standards.
Test managers today have a few options in expanding their ATE capabilities. They can scour through their ATE graveyard, roll their own in-house, or buy a commercial test system. The
