The DNB1168 is a single-channel Li-ion cell monitoring IC that provides electrochemical impedance spectroscopy (EIS) for each individual cell or a group of cells in parallel. The integrated die temperature sensors can be used for cell temperature measurement. Additional thermo-couples/NTCs are no longer required. The DNB1168 measures the cell AC impedance based on a patented circuit technology, enabling a new approach of indicating the internal cell temperature. It also enables on-line state-of-health (SoH) estimation, in combination with algorithms running on the pack controller. The IC integrates redundant ADCs for both voltage and temperature measurement. With a differential daisy chain, the cell measurement information is transmitted to the pack controller. The first IC in the chain translates a standard SPI signal to the daisy chain differential signal.
產(chǎn)品說明
High voltage battery pack of electric and hybrid electric vehicles
