NXP Semiconductors has unveiled a new wireless battery management system (BMS) solution with ultra-wideband (UWB) capabilities.
UWB technology uses high-bandwidth pulses instead of a modulated carrier frequency (sinusoidal signal) as used in 2.4 GHz narrowband technologies such as Bluetooth Low Energy. This provides higher resistance to reflections and frequency-selective fading for improved data transfer, according to NXP.
“Wireless communication within battery packs enables robust and reliable transfer of battery cell information such as voltage and temperature measurements from one module to the battery management unit without the need for wiring,” the company explains. “Leveraging wireless solutions minimizes the use of complex wiring harnesses in the battery pack, and reduces the need for error-prone manual effort during production, which makes the assembly of EVs more efficient. The elimination of connectors and wiring between battery cells allows for increased energy density.”
“Our wireless battery management system solution is the industry’s first to include UWB technology,” said Naomi Smit, GM and VP, Battery Management Systems at NXP. “Trimension UWB delivers simple, safe and robust wireless communication within the BMS, outperforming existing narrowband-based solutions.”
NXP’s Ultra-Wideband wireless BMS will be available for OEMs to start evaluation and development in Q2 2025.
Source: NXP Semiconductors