US 12,319,162 B2
Pre-charging using an on-board charger and electric-vehicle high-voltage architecture
Arsam Golriz, Gothenburg (SE); and Narendar Rao Gannamaneni, Gothenburg (SE)
Assigned to Volvo Car Corporation, Gothenburg (SE)
Filed by Volvo Car Corporation, Gothenburg (SE)
Filed on Feb. 15, 2022, as Appl. No. 17/651,176.
Claims priority of provisional application 63/157,355, filed on Mar. 5, 2021.
Prior Publication US 2022/0281335 A1, Sep. 8, 2022
Int. Cl. H02J 7/00 (2006.01); B60L 53/24 (2019.01)
CPC B60L 53/24 (2019.02) [B60L 2210/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electric vehicle pre-charging circuit, comprising:
a first contactor located on a positive bus between a load and a battery;
a second contactor located on a negative bus between the load and the battery; and
a pre-charge module integrated into the electric vehicle pre-charging circuit between the load and the battery, wherein the pre-charge module comprises a low voltage direct current to direct current converter, an on-board charger, and a resistor,
wherein the low voltage direct current to direct current converter is connected to the positive bus and the negative bus on a battery-side of the positive bus and a battery-side of the negative bus,
wherein the on-board charger is connected to the positive bus and the negative bus on the battery-side of the positive bus and the battery-side of the negative bus, wherein a phase wire connects the on-board charger to the positive bus on a load-side of the positive bus, and wherein a neutral wire connects the on-board charger to the negative bus on a load-side of the negative bus, and
wherein the resistor is connected between the load and the battery.