GÖPEL electronic launches 500 kW EV battery test bench with regenerative power and BMS interface

GÖPEL electronic has introduced a modular, high-voltage battery test bench designed for safety and functional testing of EV battery packs. Developed for use in automotive development and production environments, the system is intended to support fast and cost-efficient quality assurance of battery cells and packs.

The test bench delivers up to 500 kW of power and supports test voltages up to 1,000 V DC and currents up to 800 A DC. It includes a central measurement unit with integrated computer and display, a control cabinet, and a unit for power electronics, all of which can be configured to meet specific testing needs. The platform also features regenerative energy capability, enabling energy recovered during discharge cycles to be fed back into the grid, improving overall energy efficiency.

Key functions include insulation testing up to 7.5 kV, evaluation of AC impedance, cell dynamics under alternating current, and detection of critical defects. According to the company, test results provide insights into electrochemical processes, cell aging and internal resistance across frequency ranges. The system interfaces with a battery management system (BMS) via CAN-BUS and performs a charging/discharging cycle followed by state-of-charge verification.

Final test data are automatically exported to a production database and presented in customizable reports. The system also verifies quiescent current, confirms the battery’s final charge state, compares sensor and error memory data, and performs the final flashing of customer software onto the battery before delivery.

Source: GÖPEL electronic