US 12,459,390 B2
Method and a master control unit for controlling an electrical system of an electric vehicle
Julien Maitre, Chuzelles (FR); Maxime Valero, Meyzieu (FR); and Frederic Leroy, Lyons (FR)
Assigned to VOLVO TRUCK CORPORATION, Gothenburg (SE)
Filed by VOLVO TRUCK CORPORATION, Gothenburg (SE)
Filed on Jul. 1, 2022, as Appl. No. 17/856,244.
Claims priority of application No. 21184242 (EP), filed on Jul. 7, 2021.
Prior Publication US 2023/0010979 A1, Jan. 12, 2023
Int. Cl. B60L 3/04 (2006.01); B60L 1/00 (2006.01); B60L 53/53 (2019.01); B60L 53/63 (2019.01); B60L 58/12 (2019.01); B60L 58/14 (2019.01); H02H 3/087 (2006.01)
CPC B60L 53/63 (2019.02) [B60L 1/006 (2013.01); B60L 3/04 (2013.01); B60L 53/53 (2019.02); B60L 58/12 (2019.02); B60L 58/14 (2019.02); H02H 3/087 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for controlling an electrical system of an electric vehicle, the electrical system comprising:
a vehicle network, the vehicle network comprising:
a converter unit being adapted for connecting a traction voltage network and an on-board network;
the on-board network having a battery unit and one or more internal loads, wherein the on-board network is connected to the converter unit, wherein the on-board network has a voltage lower than the voltage of the traction voltage network;
a switching unit that is adapted for controlling a power output to an external network by connecting and disconnecting the on-board network and the external network;
the external network having one or more external loads, wherein the external network is connectable to the on-board network via the switching unit; and
the method comprising the steps of:
determining at least one current information of the electrical system;
determining at least one safety current value; and
controlling the switching unit to control the power output from the on-board network to the external network depending on the determined at least one current information of the electrical system and the determined at least one safety current value,
wherein the method is performed while the electric vehicle is in motion, wherein the vehicle network comprises the traction voltage network having one or more traction electric motors for driving the electric vehicle and an electric storage system.