Volvo Truck Corporation

Volvo Technology Corporation

Tommy Hjelle

Jerker Lennevi

Simon Brunet

Hanna Bryngelsson

Tobias Smidebrant

Niklas Legnedahl

Jan Grundberg

Martin Myhre

Johanna Gustafsson

Christian Andersson

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

A method is provided for providing a heat mode for an exhaust gas after treatment device in a vehicle, such as for regenerating an exhaust gas particulate filter in the exhaust gas after treatment device, the vehicle including an internal combustion engine, an electric machine, a transmission, and a clutch connecting the internal combustion engine to the transmission and driving wheels. The method includes the steps of establishing that a heat mode for the exhaust gas after treatment device, especially that regeneration of the exhaust gas particulate filter, is demanded, establishing that driving of the vehicle is demanded, and during a period when the clutch is at least partially decoupling the transmission, providing at least a predominant part of a required driving torque to the driving wheels by the internal combustion engine, such that exhaust gases from the internal combustion engine are heating the exhaust gas after treatment device, and especially the exhaust gas after treatment device, preferably heating the exhaust gas particulate filter for regeneration thereof. The present disclosure also relates to a vehicle, a computer program, a computer readable medium and a control unit.

Method and an apparatus for controlling the regeneration of an exhaust gas aftertreatment device

A method for estimation of state-of-health (SOH) characteristics of a battery in hybrid vehicles includes charging and discharging the battery at least one time within an upper region of a state-of-charge (SOC) window, wherein the battery; charging and discharging the battery at least one time within a lower region of the SOC window, calibrating a battery management unit included in the hybrid vehicle by using the reached levels outside the SOC window, and estimating the SOH characteristics of the battery during the charge and discharge periods by using the battery management unit.

Method for estimating state of health of a battery in a hybrid vehicle

A battery charging system and a method for a increasing endurance of a high voltage battery in a hybrid electric vehicle includes a high voltage battery for vehicle propulsion, a generator for charging the high voltage battery, a DC/DC converter for converting a high voltage to a low voltage, a low voltage battery charged with the low voltage, and an alternator, driven by an engine, and connected with the low voltage battery in parallel with the voltage converter. The method includes registering a parameter, where the parameter is at least one of a state of charge of said high voltage battery, and energy inflow/outflow to/from said high voltage battery to said vehicle drive motor or said generator, and controlling the low voltage in dependence of the registered parameter.

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Torslanda, Sweden

Tommy Hjelle