Scienlab is now part of Keysight Technologies

Testing BMS

The introduction of new storage technologies and the interconnection of multiple energy storage cells to form modules or packs, requires an intelligent battery management system. It assumes important safety, control and regulation functions including the monitoring of various parameters such as voltage, current, temperature or state of charge (SOC), and it is also responsible for thermal management, energy management, cell balancing and performance. The implementation of this functionality is the greatest challenge in BMS development and validation.

For the purpose of reproducible testing and BMS optimization, Scienlab supplies a hardware-in-the-loop (HiL) test environment: instead of the cells, Scienlab Cell Emulators are connected to emulate various cell types of a range of cell models.

  • Voltage: 0…8 V
  • Current (parallel operation): ±5 A (±10 A)
  • Power (parallel operation): ±40 W (±80 W)
  • Measuring range: up to ±2 µA ± 0.05 % of measured value
  • Voltage measuring accuracy: <1 mV

The Scienlab solution also provides emulation of

  • Cell temperature through emulation of typical RTD sensors such as PT-100, PT-500, PT-1000, Ni and KTY
  • Battery current sensors (up to ±1000 A at a 100 µOhm shunt)
  • Individually defined errors such as insulation faults at the battery voltage, line breaks, short-circuits or reverse polarity

Highlights

  • Safety for personnel and product even in critical operating points because no real components are used (no risk of hazards e.g. from the cell chemistry and the electrical energy of the battery)
  • Real-time capable interfaces for fast data transfer (1 Gbps) between the test systems and the HiL system
  • Parameterizable cell models for each cell type
  • Maximum measuring precision
  • Dynamic control
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