US 11,799,282 B2
Electrical safety system for providing overcurrent protection of an electrical circuit in a vehicle
Markus Heinrich, Wiehl (DE); and Guillaume Tournabien, Saint Soupplets (FR)
Assigned to Aptiv Technologies Limited, St. Michael (BB)
Filed by APTIV TECHNOLOGIES LIMITED, St. Michael (BB)
Filed on Jun. 7, 2022, as Appl. No. 17/834,357.
Application 17/834,357 is a continuation of application No. 16/997,039, filed on Aug. 19, 2020, granted, now 11,362,506.
Claims priority of application No. 19194381 (EP), filed on Aug. 29, 2019.
Prior Publication US 2022/0376487 A1, Nov. 24, 2022
Int. Cl. H02H 3/08 (2006.01); H02H 3/087 (2006.01); H02H 9/02 (2006.01); H02H 1/06 (2006.01); G05F 5/00 (2006.01)
CPC H02H 3/087 (2013.01) [H02H 1/06 (2013.01); H02H 3/08 (2013.01); H02H 9/025 (2013.01); G05F 5/00 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An electrical safety system for providing overcurrent protection of an electrical circuit, the electrical safety system comprising:
a main safety device including a first switch for selectively providing a first level of overcurrent protection of the electrical circuit during a first operating mode in which the electrical circuit includes a first amount of electrical energy consumption;
an auxiliary safety device including
a second switch for selectively providing a second level of overcurrent protection of the electrical circuit during a second operating mode in which the electrical circuit includes a second amount of electrical energy consumption, and
a voltage drop component in electrical series with the second switch for providing a voltage drop when current passes through the voltage drop component during the second operating mode,
wherein the second level of overcurrent protection is lower than the first level of overcurrent protection and the second amount of electrical energy consumption is lower than the first amount of electrical energy consumption; and
a driving circuit for controlling the second switch to protect the electrical circuit from overcurrent when the voltage drop exceeds a predetermined threshold.