14 cell battery management chip boosts electric car range : Page 2 of 2

August 08, 2019 //By Nick Flaherty
Up to 30 Renesas ISL78714 battery management chips in a daisy-chain support a 430 cell battery pack
Up to 30 Renesas ISL78714 battery management chips in a daisy-chain support a 420 cell battery pack
and bus bar measurement requirements for aging battery packs, while the board level long term drift of ±6mV @ ±6σ will last for the 15 year liefetime. The devices are AEC-Q100 Grade-2 qualified and specified for operation from -40°C to +105°C

A battery management system (BMS) reference design is available, which includes five ISL78714 ICs and a RH850/P1M MCU to form a complete 70-cell evaluation platform for external balancing. The reference design kit provides setup and data logging via CAN and UART. Also provided is a GUI, Altium layout files and low-level drivers for the RH850 peripherals and ISL78714. Hardware, software, and interface reference manuals are included, along with an EMC report. Together, the reference design kit makes it easy for electric vehicle system designers to port their software to the RH850 MCU, scale to any battery pack size, and save up to one year of development time.

Mass production quantities of the ISL78714 Li-ion battery management IC are available now in a 64-lead TQFP package.

The ISL78714, evaluation board, and BMS reference design kit are available at www.renesas.com/products/isl78714.

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