Nuvoton Technology Corporation Japan (NTCJ) has unveiled plans to release samples of its new 26-cell battery monitoring IC, the KA85010UA, equipped with Electrochemical Impedance Spectroscopy (EIS) functionality, starting January 2027. This announcement marks a significant development in battery monitoring technology, particularly in automotive and energy storage systems.
The KA85010UA incorporates NTCJ's proprietary inductor method, which dramatically reduces the printed circuit board (PCB) temperature rise during EIS measurements by approximately 93% compared to conventional methods. This advancement enables enhanced battery degradation diagnostics, lifetime predictions, and early detection of cell abnormalities, without the need for dedicated measurement equipment.
In addition to battery monitoring, this product integrates EIS-based impedance measurement into a single chip. EIS applies an alternating current (AC) to a battery and calculates impedance from the resultant voltage and current responses. This integration allows for continuous internal battery condition assessments, predicting state of health (SOH) and internal temperature, while offering early warnings of potential issues, thereby significantly improving battery safety in vehicles and energy storage systems.
NTCJ's inductor method not only decreases energy loss but also reduces power loss by approximately 93% compared to the traditional resistor method. These low-power and low-heat characteristics ensure stable data collection during various battery operational states such as charging and rest.
The company's expertise in EIS data analysis, bolstered through collaborative verification efforts with automakers and research bodies, enables them to offer comprehensive support. This includes setting up EIS measurement environments and implementing functions for estimation and abnormality detection, facilitating easier build-up of battery diagnostic systems for customers new to EIS technology.
Further details on the KA85010UA can be found on Nuvoton's official website, offering potential users a complete understanding of the product's capabilities and applications.
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