Technical article, 22.09.2015

Preh's 48-volt battery management

Preh's 48-volt Battery Control Unit (BCU) reduces CO2 and gains new comfort functions. It can be designed in the customer's required configuration.

The BCU's main tasks include monitoring battery cell temperature and voltage in conjunction with a highly accurate current sensor. Even after ten years of use, it shows only a slight deviation in measurement accuracy: Originally calibrated to 0.1 percent, the sensor still achieves 1.0 percent measurement accuracy after these 10 years. Safety-relevant aspects are taken into account by using integrated MOSFET switches for all-pole battery separation.

To Article (German version only)