Minimizing over the air data transmission for wireless battery monitoring systems

Abstract

Disclosed are methods and systems for reducing wireless data traffic in a battery management system. A wireless battery management system includes peripheral devices (PDs), each coupled to a battery module having associated battery cells and is operable to receive battery measurements from such associated cells. The system also includes a central device (CD) operable to receive battery measurements from the PDs via a wireless network. The system also includes a first data processing unit (DPU) coupled with a first one of the PDs and communicatively interposed between the first PD and the wireless network. The first DPU is operable to (i) receive a first data packet from the first PD, (ii) if the first data packet passes verification, compress the first data packet and add a protection code to the first data packet, and (iii) send the compressed first data packet with the protection code to a second DPU via the wireless network. The second DPU is coupled with the CD and communicatively interposed between the CD and the wireless network. The second DPU is operable to (i) from the wireless network, receive the compressed first data packet with the protection code, (ii) if the compressed first data packet passes verification, decompress the compressed first data packet to obtain the first data packet, and (iii) send the decompressed first data packet to the CD.