NewDivision to Launch Battery Management Systems for EVs

COMPANY has rolled out a new battery management system, called TLE9012AQU, which manages and balances the battery charge of an electric vehicle. The German chip company designed it especially for hybrid and electric car batteries, but it is also suitable for other applications such as energy storage systems and e-bike battery management systems.

The main powertrain related building blocks of a battery electric vehicle are Battery Management System (BMS), onboard charger (OBC) and main inverter that drive the electric motor and feeds back energy to the battery in case of regenerative braking.

The rapid adoption of batteries in electric vehicles (EV) has led the electronic design towards a new generation of electric charge monitoring devices. While in 2018 about 64 percent of these batteries were still produced for electric mobility worldwide, by 2025 this figure will have risen to well over 85 percent. Furthermore, according to various researches by analysts, driving an electric car is the best choice in terms of emissions in 95 percent of the world. Many analysts predict that by 2050 every second car will be electric, and this would reduce global CO2 emissions by up to 1.5 gigaton per year (billions of tons).

“Drivers for electro-mobility are increasingly becoming more interesting due to the stricter CO2 regulations. By the end of this decade roughly 30 percent of new cars will include a high voltage battery. 70-80% of overall powertrain costs in EV are due to power electronics and battery. 75% of the battery costs originate from the battery cells (housing, materials for electrodes and electrolytes, protection features), ” said Clemens Müller, director application marketing at Infineon’s Automotive Division.

TLE9012AQU offers voltage measurement in up to twelve battery cells with an accuracy of ± 5.8 mV over the entire temperature and operating voltage range. By combining up to five external temperature sensors and an iso-UART interface for communication, the device offers a complete optimization of the entire project (Figures 1 and 2).

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