Scienlab electronic systems GmbH

Test BMS

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

For the reproducible testing and optimization of the BMS, Scienlab offers a hardware-in-the-loop (HiL) test environment: Instead of the cells, Scienlab cell emulators are connected, thereby simulating different cell types via different cell models.

Voltage: 0 … 8V
Measuring and positioning accuracy: <1 mV Max. Output current: ± 5 A (parallel operation: ± 10 A) Max. Output power: ± 40 W (parallel operation ± 80 W) Max. Voltage rise time (3 V -> 5 V): ≤ 80 μs
Current measurement accuracy: up to ± 2 μA + 0.05% of the measured value
In addition, the Scienlab solution provides the emulation of

Cell temperature by replicating typical RTD sensors such as Pt100, Pt500, Pt1000, Ni and KTY
Battery current sensors (up to ± 1000 A with a 100 μOhm shunt)
individually defined errors such as insulation faults at the battery voltage, line break, short circuit, over / under voltage and temperature as well as overcurrent
Highlights
Safety for personnel and product due to minimization of danger due to replication of real components (no danger due to cell chemistry and electrical energy of the battery)
Real-time interfaces for fast data transfer of 1 Gbit / s between the test systems and the HiL
Parameterized cell models for each cell type
Highest measuring precision
Highly dynamic control