US 12,139,022 B2
Monitoring apparatus for an onboard electrical system of an at least partially electrically operated motor vehicle, and method
Tobias Aurand, Freiberg (DE); Soeren Schoerle, Gerlingen (DE); and Markus Zimmer, Leinfelden-Echterdingen (DE)
Assigned to Daimler Truck AG, Leinfelden-Echterdingen (DE)
Appl. No. 18/251,807
Filed by Daimler Truck AG, Leinfelden-Echterdingen (DE)
PCT Filed Nov. 2, 2021, PCT No. PCT/EP2021/080389
§ 371(c)(1), (2) Date May 4, 2023,
PCT Pub. No. WO2022/096459, PCT Pub. Date May 12, 2022.
Claims priority of application No. 10 2020 006 780.8 (DE), filed on Nov. 5, 2020.
Prior Publication US 2024/0042864 A1, Feb. 8, 2024
Int. Cl. B60L 3/04 (2006.01)
CPC B60L 3/04 (2013.01) 7 Claims
OG exemplary drawing
 
1. A monitoring apparatus (14) of an onboard electrical system (12) of an at least partially electrically operated motor vehicle (10), comprising:
a switchgear (16) which is configured to switch a high-voltage positive path (18) and a high-voltage negative path (20) of an electrical energy storage device (22) of the onboard electrical system (12);
wherein the switchgear (16) has a control line (24, 24a, 24b, 24c) which is coupled to a pyrotechnic safety device (26);
wherein in an event of an interruption of the control line (24, 24a, 24b, 24c), the switchgear (16) opens the high-voltage positive path (18) and the high-voltage negative path (20);
a control line switchgear (28) series-coupled in the control line (24) to the pyrotechnic safety device (26); and
an electronic computing device (32), wherein the control line switchgear (28) interrupts the control line (24, 24a, 24b, 24c) as a function of a control signal (30) of the electronic computing device (32);
wherein the electronic computing device (32) is configured to check a voltage potential in the control line (24, 24a, 24b, 24c) using the control line switchgear (28) before the electrical energy storage device (22) is connected to the onboard electrical system (12).