Dukosi has introduced a dc internal resistance (DCIR) and electrochemical impedance spectroscopy (EIS) evaluation kit for lithium-ion battery development, including battery packs used in electric vehicles (EVs). The kit allows engineers to evaluate cell-level measurements using Dukosi’s Smart Cell chip-on-cell monitoring technology.
The evaluation kit provides DCIR measurements that give battery management systems (BMS) information about individual cell conditions. Combined with per-cell voltage and surface temperature readings from the integrated temperature sensor, these measurements can improve estimates of available power and provide additional data for thermal modeling.
The kit also enables EIS measurements to track electrochemical changes within individual cells, providing information for estimating battery state of health (SoH). Engineers can perform frequency sweeps from 0.1 Hz to 3.5 kHz or select individual frequencies to reduce measurement time.
According to Dukosi, customer benchmarking has demonstrated EIS measurement speeds 15 to 20 times faster than competing systems, with accuracy comparable to laboratory equipment. Cell-level measurements can also help identify performance differences and potential degradation within a battery pack.
The evaluation kit includes a Dukosi Cell Monitor board for each cell and a System Hub capable of connecting up to 216 monitoring boards. Engineers can configure multi-cell networks to simulate battery pack operation and evaluate the technology under different conditions.
A graphical user interface provides a digital representation of the battery configuration and allows users to switch between DCIR and EIS measurements without changing the physical setup. The kit also includes the necessary cables and technical documentation for development and testing.
Dukosi is demonstrating the evaluation kit at electronica 2026, November 10–13 in Munich (Hall B4, Booth 421).
Filed Under: Batteries, Technology News