Volvo Truck Corporation

Simon Brunet

Tobias Smidebrant

Tommy Hjelle

Jerker Lennevi

Hanna Bryngelsson

Niklas Legnedahl

Robert Karlsson

Linus Nordholm

Martin Myhre

A method of determining a preconditioning status of a vehicle component or system. The method includes receiving a preconditioning status request for a vehicle component or system; determining the preconditioning status by a preconditioning model estimating the preconditioning status without activating the corresponding vehicle component or system.

Method of determining a preconditioning status of a vehicle component or system

The present invention relates to a method for reducing wear of an energy storage device in an energy storage system connected to a load, the energy storage system comprising at least two energy storage devices. The method comprising: connecting (S) the energy storage system to an electrical energy source, and electrically powering (S) the load via the energy storage system by connecting at least one of the energy storage devices to transfer electrical energy from the electrical energy source to the load, and disconnecting at least one other energy storage device to not transfer any electrical energy from the electrical energy source to the load.

Method for reducing wear of an energy storage device

A device for enabling SOC estimation of at least one battery cell in an electrical energy storage system of a hybrid electric vehicle. The device initiates charging of the battery cell to a first voltage level. The battery cell is charged by an electric machine powered by a combustion engine. The device detects that the first voltage level is reached, initiates stop of fuel injection to the combustion engine. The device initiates discharging of the at least one battery to a second voltage level. The device detects that the battery cell has been discharged to a second voltage level. SOC estimation of the battery cell is enabled when the second voltage level has been reached.

Device and method for enabling SOC calibration in an electrical energy storage system of a hybrid electric vehicle

The invention relates to a method () for determining an adjusted state-of-charge (SOC) operating window of a battery pack assembly in a vehicle. The method comprises the steps of determining () an energy throughput or an electrical current through put of the battery pack assembly; determining () a SOC operating window margin based on said determined energy throughput or electrical current through put of the battery pack assembly;adjusting () the SOC operating window in response to the determined SOC operating window margin.

Method for determining a state-of-charge operating window of a battery

The invention relates to a method for controlling the operation of an energy storage system () in a vehicle (), preferably an electric or hybrid electric vehicle, said energy storage system () comprising at least two battery packs () connected in parallel, said energy storage system () being adapted to provide at least a nominal power functionality for propulsion of said vehicle () using an allowed operating extent of all of said battery packs () of said energy storage system (), said allowed operating extent being a nominal working range of said battery packs (); said method comprising disconnecting at least one battery pack (); and setting said allowed operating extent for said remaining connected and active battery pack(s) () to an increased working range so as to enable said energy storage system () to provide said nominal power functionality to said vehicle (), the method further comprising monitoring at least one accumulated parameter indicative of the operation of said energy storage system () from the time of disconnection of said at least one battery pack (), and when said accumulated parameter reaches a threshold value, setting said allowed operating extent for said remaining battery pack(s) () to a decreased working range. The invention also relates to a control unit for controlling the operation of an energy storage system ().

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Landvetter, Sweden

Simon Brunet