US 12,172,590 B2
Vehicle power distribution circuit and vehicle power system
Markus Heinrich, Wiehl (DE); and Guillaume Tournabien, Saint Soupplets (FR)
Assigned to APTIV TECHNOLOGIES AG, Schaffhausen (CH)
Filed by APTIV TECHNOLOGIES LIMITED, St. Michael (BB)
Filed on Oct. 24, 2022, as Appl. No. 17/971,953.
Claims priority of application No. 21204579 (EP), filed on Oct. 25, 2021.
Prior Publication US 2023/0129971 A1, Apr. 27, 2023
Int. Cl. B60R 16/03 (2006.01); B60L 53/60 (2019.01); H02J 7/00 (2006.01)
CPC B60R 16/03 (2013.01) [B60L 53/60 (2019.02); H02J 7/0034 (2013.01); B60L 2210/10 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A vehicle power distribution circuit for connecting between an energy storage device and a power line connected to a generator or a DC/DC-Converter, the vehicle power distribution circuit comprising:
a charging line connected between the energy storage device and the power line for charging the energy storage device when a forward voltage is applied by the generator or the DC/DC-Converter;
a protection switch provided in the charging line and being openable for preventing conduction of current through the protection switch in response to a drop in voltage on the power line, wherein the protection switch is opened in response to a drop in voltage on the power line below a predefined threshold indicative of a short circuit on the power line;
an ideal diode arrangement provided in parallel to the protection switch in the charging line for conducting a forward current from the generator or the DC/DC-Converter to the energy storage device when forward voltage is applied and for preventing a reverse current from the energy storage device to the power line when a reverse voltage is applied;
a battery line connected to the energy storage device, wherein the charging line is connected between the battery line and the power line; and
a plurality of critical modules connected to the battery line, wherein:
the plurality of critical modules are supplied, via the battery line, electrical current from the energy storage device when the protection switch is in an open configuration, and
the plurality of critical modules are supplied, via the charging line, electrical current from the generator or the DC/DC-Converter when the protection switch is in a closed configuration.