Achievements:

1. Simplifying an automotive battery system; one IC manages up to 25 in-series battery cells
2. Battery Management System (BMS) compliant to ASIL-D; redundant measurement system*1 and bidirectional ring communication*2 support its safety
3. Offering safety function; a stand-alone chipset which detects abnormalities during car-parking and starts a host microcontroller
4. Accurate estimation of battery’s State of Charge (SOC*3) and State of Health (SOH*4); ensured by synchronized current and voltage measurements within 10us

With Electric Vehicle (EV) market growth toward a carbon neutral society realization, automobile manufacturers are encouraged to meet demands for a safety improvement of a Lithium-ion battery pack, as well as for a longer EV driving range by enhancing the pack capacity and integration. Furthermore, in order to realize a sustainable society in which mass-produced batteries are reused without being disposed, it is desirable to use batteries for a longer period of time. Not only does BMS secure both high battery capacity and safety, but it also needs a technology that collects various battery parameters such as battery temperature, charging and discharging current to extend battery life.

NTCJ launches 4th generation of battery monitoring chipset, consisting of a battery monitoring IC that accurately measures the voltage and temperature of battery cells, a new line of pack monitoring IC that precisely measures a battery pack’s current and monitors its internal control, and a communication IC that serves as an interface with the ICs above and a microcontroller.

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