Abstract: An electromobility system for a vehicle comprising a primary sub-system including at least a first battery pack arrangement to power an electric machine for propelling the vehicle, a secondary sub-system being a high voltage sub-system and including at least a second battery pack arrangement to power an auxiliary equipment, and a DC/DC-converter galvanically separating the primary sub-system from the secondary sub-system. The system, in a first state, powers the electric machine by the first battery pack arrangement of the primary sub-system independently of the secondary sub-system, and powers the auxiliary equipment by the second battery pack arrangement in the secondary sub-system independently of the primary sub-system, and in a second state, powers the auxiliary equipment by the second battery pack arrangement of the secondary sub-system and, via the DC/DC-converter, the first battery pack arrangement of the primary sub-system.

Abstract: A vehicle motion management system (260) for a vehicle, the vehicle motion management system being connectable to a motion support system (230230) for communication of control signals therebetween, wherein the vehicle motion management system is configured to: —determine a desired torque for operating the vehicle at a current vehicle operating condition; —determine a wheel slip limit for at least one wheel of the vehicle; —determine, based at least on the wheel slip limit, a wheel speed limit for the at least one wheel of the vehicle; and—transmit a control signal indicative of the desired torque and the wheel speed limit to the motion support system (230).

Abstract: A method for thermal preconditioning at least one thermal buffer in a thermal system of a vehicle, the thermal system being a rechargeable energy storage system, RESS, and/or an energy transformation system comprising fuel cells. The method includes providing scheduled operational information of the thermal buffer, the scheduled operational information comprising a scheduled initialization time and scheduled operational load of the thermal buffer, determining whether the thermal buffer is in need of cooling or heating in order to reach a pre-determined temperature level, preconditioning the thermal buffer in accordance with the scheduled operational information such that the thermal buffer is thermally preconditioned by cooling or heating to the pre-determined level in accordance with the scheduled operational load at a time in accordance with the scheduled initialization time.

Abstract: 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.

Abstract: An electromobility system for a vehicle comprising a primary sub-system including at least a first battery pack arrangement to power an electric machine for propelling the vehicle, a secondary sub-system being a high voltage sub-system and including at least a second battery pack arrangement to power an auxiliary equipment, and a DC/DC-converter galvanically separating the primary sub-system from the secondary sub-system. The system, in a first state, powers the electric machine by the first battery pack arrangement of the primary sub-system independently of the secondary sub-system, and powers the auxiliary equipment by the second battery pack arrangement in the secondary sub-system independently of the primary sub-system, and in a second state, powers the auxiliary equipment by the second battery pack arrangement of the secondary sub-system and, via the DC/DC-converter, the first battery pack arrangement of the primary sub-system.

Abstract: A traction voltage system in a vehicle includes a junction box with multiple connectors for electrical components, which components include electrical supplies and electrical loads, and an electronic control unit arranged to monitor current flowing flow to or from the components. A controller or a circuit breaker is arranged to control the supply of power to each respective component, and at least all but one of the connectors are provided with a current sensor arranged to transmit a signal representing detected current values to the electronic control unit. The electronic control unit is arranged to determine an instantaneous current value flowing to or from each component, to compare the instantaneous current value with a predetermined limit value for each connector, and to take action in response to the comparison. A method for controlling the traction voltage system is also provided.

Abstract: A method is provided for controlling charging of an electric energy storage system in a vehicle including an electric machine which is arranged for propulsion of the vehicle. The method includes initiating the charging upon connection of the energy storage system to an external power supply via a first connector element associated with the vehicle and a second connector element associated with the external power supply, and monitoring a contact resistance defined by the connection of the connector elements. Furthermore, the method includes measuring and calculating the power loss over the connector elements during the charging, and generating an error signal if the power loss is higher than a predetermined threshold value, the error signal being dependent on the magnitude of the power loss. An arrangement for controlling charging of an electric energy storage system in a vehicle is also provided.

Abstract: A method is provided for operating a hybrid electric vehicle including an internal combustion engine and an electrical system, which electrical system includes at least one electronic control unit, an engine-driven electric machine (operable as a motor for driving the vehicle or as a generator for supplying power to one or more electrical loads via a high voltage traction bus, and a high voltage battery pack coupled to the high voltage traction bus by at least one contactor arranged to connect the battery pack to the high voltage traction bus. If it is determined that the at least one parameter indicates a condition preventing the battery pack from being connected to the high voltage bus, the electric machine is operated in voltage control mode during operation of the vehicle until the condition is eliminated, whereafter the high voltage bus is pre-charged and the high voltage battery pack reconnected.

Abstract: 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.

Abstract: A method is provided for balancing an energy storage system that includes a plurality of connected battery cells in a vehicle including an electric machine arranged for propulsion of the vehicle. The method includes monitoring a need for balancing of the cells, initiating a request for the balancing based on the operational condition related to the battery cells, discharging or charging the energy storage system until the state of charge of the energy storage system has reached a predetermined level, and balancing the voltage of the battery cells. The method further includes allowing input instructions representing a time schedule for the balancing upon initiating the request for balancing, and initiating the discharging so that the energy storage system reaches the predetermined level of the state of charge in accordance with the input instructions. An arrangement for balancing an energy storage system is also provided.

Abstract: A method is provided for balancing the voltage of multiple series-connected electrochemical cells of an electrical storage system of a hybrid electric vehicle. The method includes discharging the electrical storage system by operating at least one large electrical machine of the vehicle at vehicle standstill until the state of charge of the electrical storage system or the cell having the lowest state of charge has reached a predetermined level, and subsequently balancing the voltage of the cells.

Abstract: 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.

Abstract: A method is provided for monitoring a state of health of a vehicle system and includes measuring a plurality of parameter values for the system at different running conditions as an end of line test, storing the parameter values in a fingerprint file, measuring the same plurality of parameter values that is comprised in the fingerprint file after a predefined time interval, adding a predefined ageing offset to the fingerprint file, where the ageing offset corresponds to a predicted wear of the system during the predefined time interval, thereby obtaining a time modified fingerprint file for the system, comparing the measured values with the time modified fingerprint file, and issuing a message if the measured values deviates from the time modified fingerprint file. The state of health can be compared with initial measurements such that the state of health of a vehicle system or component can be monitored over a longer time period.

Abstract: A method for error detection during charging of an energy storage system in a vehicle is provided, the vehicle including an electric machine which is arranged for propulsion of the vehicle. The method includes requesting a charging pattern from an external power supply, by a vehicle control unit, upon connection of the energy storage system to the external power supply; and supplying the charging pattern to the energy storage system by an external charging control unit forming part of the external power supply. The method furthermore includes providing a predetermined modulation of the requested charging pattern; evaluating whether the charging pattern supplied to the energy storage system includes the predetermined modulation; and, if this is not the case, indicating that the charging of the energy storage system is erroneous. An arrangement for error detection during charging of an energy storage system, and a vehicle including an electric machine and having such an arrangement are also provided.

Abstract: A method is provided for controlling charging of an electric energy storage system in a vehicle including an electric machine which is arranged for propulsion of the vehicle. The method includes initiating the charging upon connection of the energy storage system to an external power supply via a first connector element associated with the vehicle and a second connector element associated with the external power supply, and monitoring a contact resistance defined by the connection of the connector elements. Furthermore, the method includes measuring and calculating the power loss over the connector elements during the charging, and generating an error signal if the power loss is higher than a predetermined threshold value, the error signal being dependent on the magnitude of the power loss. An arrangement for controlling charging of an electric energy storage system in a vehicle is also provided.

Abstract: A traction voltage system in a vehicle includes a junction box with multiple connectors for electrical components, which components include electrical supplies and electrical loads, and an electronic control unit arranged to monitor current flowing flow to or from the components. A controller or a circuit breaker is arranged to control the supply of power to each respective component, and at least all but one of the connectors are provided with a current sensor arranged to transmit a signal representing detected current values to the electronic control unit. The electronic control unit is arranged to determine an instantaneous current value flowing to or from each component, to compare the instantaneous current value with a predetermined limit value for each connector, and to take action in response to the comparison. A method for controlling the traction voltage system is also provided.

Abstract: 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.

Abstract: A method for controlling a hybrid vehicle electrical system includes driving the vehicle in a first driving mode where the battery pack is connected to the traction voltage DC-link and the battery pack is supplying the electrical auxiliary units with power, shutting down the power electronics unit in order to cease power delivery from the electric machine to the traction voltage DC-link or to the electric machine from the traction voltage DC-link, disconnecting the battery pack from the traction voltage DC-link by opening the relay, and activating the power electronics unit and controlling output voltage of the power electronics unit to a predetermined level.

Abstract: A method is provided for balancing an energy storage system that includes a plurality of connected battery cells in a vehicle including an electric machine arranged for propulsion of the vehicle. The method includes monitoring a need for balancing of the cells, initiating a request for the balancing based on the operational condition related to the battery cells, discharging or charging the energy storage system until the state of charge of the energy storage system has reached a predetermined level, and balancing the voltage of the battery cells. The method further includes allowing input instructions representing a time schedule for the balancing upon initiating the request for balancing, and initiating the discharging so that the energy storage system reaches the predetermined level of the state of charge in accordance with the input instructions. An arrangement for balancing an energy storage system is also provided.

Abstract: 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.