公开(公告)号：EP4270206A1

公开(公告)日：2023-11-01

申请号：EP23162258.0

申请日：2023-03-16

Applicant: STMicroelectronics S.r.l.

Inventor： OREGGIA, Daniele ,  CANNONE, Alessandro ,  ALAGNA, Diego ,  RAIMONDI, Marcello

IPC: G06F13/42 ,  G06F13/38 ,  G06F13/40 ,  H04L12/40 ,  H01M10/42

Abstract: A battery management system includes: a controller (211); a master battery management integrated circuit, BMIC, device (213M) coupled to the controller (211) and configured to communicate with the controller (211) through a standard Serial Peripheral Interface, SPI, protocol; and a first slave BMIC device (213SA) and a second slave BMIC device (213SB) that are connected in a daisy chain configuration and communicating through Isolated SPI interfaces, where the first slave BMIC device (213 SA) is coupled to the master BMIC device (213M) through an Isolated SPI interface, where the Isolated SPI interface uses a differential signal comprising a positive signal and a complementary negative signal, where a bit frame of the positive signal includes a bit period followed by an idle period having a same duration as the bit period, where the first slave BMIC device (213SA) and the second slave BMIC device (213SB) are configured to be coupled to a first battery pack and a second battery pack, respectively.