US 11,863,000 B2
Energy storage system for a vehicle
Tobias Smidebrant, Gothenburg (SE)
Assigned to VOLVO TRUCK CORPORATION, Gothenburg (SE)
Filed by VOLVO TRUCK CORPORATION, Gothenburg (SE)
Filed on Feb. 18, 2022, as Appl. No. 17/651,647.
Claims priority of application No. 21020098 (EP), filed on Feb. 24, 2021.
Prior Publication US 2022/0271551 A1, Aug. 25, 2022
Int. Cl. H02J 7/00 (2006.01); B60L 3/00 (2019.01); B60L 3/04 (2006.01); G01R 31/382 (2019.01)
CPC H02J 7/00304 (2020.01) [B60L 3/0046 (2013.01); B60L 3/04 (2013.01); G01R 31/382 (2019.01); H02J 7/0013 (2013.01); H02J 7/0031 (2013.01); H02J 7/0047 (2013.01); H02J 7/0063 (2013.01); H02J 7/00714 (2020.01)] 14 Claims
OG exemplary drawing
 
1. An energy storage system, comprising:
one or more battery units for storing electrical energy;
at least one high voltage switch for connection and disconnection of the one or more battery units to at least one load, such as an electrical machine;
a fuse for disconnection of the one or more battery units when the energy storage system experiences an overcurrent being above a predetermined overcurrent value; wherein the energy storage system is configured to
during use, identify if a condition has occurred which requires immediate shutdown of the energy storage system; and if it is identified that immediate shutdown is required, the energy storage system is further configured to:
measure a value indicative of current in the energy storage system;
if the measured value indicative of current is equal to or below a level at which it is safe to open the at least one high voltage switch, the energy storage system is configured to immediately shut down the energy storage system by opening the at least one high voltage switch, and
if the measured value indicative of current is above the level at which it is safe to open the at least one high voltage switch but lower than the predetermined overcurrent value, the energy storage system is configured to immediately shut down the energy storage system by actively triggering the fuse.