US 11,892,518 B2
Method of operating battery management systems, corresponding device and vehicle
Orazio Pennisi, Pieve Emanuele (IT); Valerio Bendotti, Vilminore di Scalve (IT); Vanni Poletto, Milan (IT); and Vittorio D'Angelo, Nocera Superiore (IT)
Assigned to STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed by STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed on Jul. 6, 2021, as Appl. No. 17/368,153.
Application 17/368,153 is a continuation of application No. 16/420,992, filed on May 23, 2019, granted, now 11,079,442.
Claims priority of application No. 102018000005828 (IT), filed on May 29, 2018.
Prior Publication US 2021/0333330 A1, Oct. 28, 2021
Int. Cl. G01R 31/396 (2019.01); G01R 31/50 (2020.01); G01R 31/54 (2020.01); B60L 58/22 (2019.01); H01M 10/46 (2006.01); H01M 10/18 (2006.01); H02J 7/14 (2006.01); H01M 10/48 (2006.01); G01R 31/52 (2020.01)
CPC G01R 31/396 (2019.01) [B60L 58/22 (2019.02); G01R 31/50 (2020.01); G01R 31/52 (2020.01); G01R 31/54 (2020.01); H01M 10/46 (2013.01); H01M 10/482 (2013.01); H02J 7/14 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A method for testing a battery pack, the method comprising:
performing a first test on an even-numbered cell of a plurality of cells of the battery pack, the battery pack comprising the plurality of cells, the even-numbered cell comprising a cathode terminal coupled to a even-numbered charge-sensing pin from a plurality of charge-sensing pins through an even-numbered coupling resistor from a plurality of coupling resistors and an anode terminal coupled to an odd-numbered charge-sensing pin from the plurality of charge-sensing pins through an odd-numbered coupling resistor of the plurality of coupling resistors, the cathode terminal being further coupled to an even-numbered charge distribution pin from a plurality of charge distribution pins through a first discharge resistor, the anode terminal being further coupled to a common balance pin, wherein performing the first test comprises:
activating an even-numbered current generator to draw a first current through the even-numbered charge-sensing pin;
calculating a first voltage difference corresponding to the drawn first current and the even-numbered coupling resistor; and
determining a first fault in the battery pack based on the first voltage difference.