Location
Peter Blume, President of Bloomy to present.
A “Universal” Approach to BMS End-of-Line Manufacturing Test
Track 4: Tutorials
Session: Identifying Specific Techniques and Technologies to Improve the Efficiency and Lower the Cost of Manufacturing
Date and Time: September 14 (day 2), 3:45 PM-5:15 PM
A battery management system (BMS) typically consists of printed circuit board assemblies (PCBAs) for cell monitoring, balancing, as well as the supervision of multiple modules. As a BMS scales from prototype to production, it becomes necessary to automate the functional testing of each PCBA using end-of-line automated test equipment (ATE). BMS testing has unique challenges such as exercising the cell balancing circuitry, calibration of cell voltage and current monitors, simulating pack current, and high-voltage isolation. These features are not commonly available with most commercial ATE systems. Many battery companies either develop or procure custom ATE, which entails substantial effort and expense for design and maintenance. Moreover, different battery configurations and applications may require entirely different BMSs, increasing the number of PCBAs that need testing. In this session, Peter Blume discusses a highly-flexible or “universal” approach for testing many BMS PCBAs using one ATE system.
Visit Bloomy at booth #2114 in the exhibition hall. Bloomy will showcase the following products:
- The Battery Simulator 1200 is a 12-cell simulator that is the building block of all of Bloomy’s BMS test systems. Each cell has individually programmable voltage levels and current limits, 1,000 V of isolation, and can dynamically sink and source current similar to a real battery.
- The Battery Fault Insertion Unit (FIU) provides intelligent switching of cell-simulation channels for the Battery Simulator 1200. The switching capability enables simulation of open-circuit and short-to-rail fault conditions on any cell channel for the purposes of battery management system (BMS) testing.
- A desktop demonstration version of the BMS HIL Test System simulates a complete battery pack in order to test the BMS in real time. It is ideal for iteratively testing and optimizing BMS firmware, including cell balancing algorithms, SOC, SOH, safety interlocks, and many more conditions.
