16-Channel high-speed application 100% monitoring in automotive battery module assembly

• Measurement of the internal resistance and voltage of individual cells and the HV stack
• Measurement time Internal resistance at 1 kHz as well as cell and module voltage of all 16 cells in less than 0.5 s 
• Up to 5 measuring channels per device. Easy to cascade on a top-hat rail due to the small design.
• Connection via PROFINET supports flexible sequence control and measurement data acquisition

Task

Many battery cells are required to manufacture and install high-performance battery modules for electrically operated vehicles. In received goods checking area, important battery parameters of each individual cell must be reliably measured and evaluated within very short cycle times. After contacting the prismatic cells, the internal resistance with 1 kHz and the cell and module voltage of all 16 cells are measured and evaluated within approx. 0.5 s with the cascadable battery measuring module and transferred to a PLC in real time.

Measuring and evaluation parameters: Single cell
U_cell = 3.2 … 3.3 VDC
R_AC (1 kHz) = 0.4 … 0.6 mΩ

Measuring and evaluation parameters: EoL
U_stack = 760 … 800 V
R_stack = 100 … 150 mΩ