Volvo Truck Corporation

Bassem Farag

Faisal Altaf

Mark Hirche

Adam Josefsson

Jonas Enerbäck

The present invention relates to a method for improving the availability of an energy storage system in a vehicle. The energy storage system comprises a plurality of battery packs, and the method comprises:

Method for improving the availability of an energy storage system in a vehicle

The method comprises providing preview information comprising at least one of a predicted road condition and a predicted road event; processing the preview information with an estimation model adapted to relate a risk level associated with a power unavailability for each one of the energy consumers to the at least one predicted road condition and/or predicted road event; classifying the energy consumers having a risk level higher than a predetermined risk level threshold value as critical energy consumers, and classifying the energy consumers with a risk level lower than the predetermined risk level threshold value as non-critical energy consumers; estimating a required amount of energy and/or power for powering all the energy consumers in the predetermined group of energy consumers for the predicted road condition and/or the predicted road event; estimating the available energy and/or power of the EST system; in response to determining that the required amount of energy for powering all the energy consumers in the predetermined group of energy consumers is higher than the available energy, powering the energy consumers classified as critical, and deactivating at least one of the energy consumers classified as non-critical.

Method for classifying energy consumers in a vehicle

A method for controlling electrical connection of at least two battery packs () of an energy storage System () of a vehicle () to a common load during operation of the vehicle, each one of the battery packs being connectable to the load via at least one respective switching device, the method comprising: —receiving measurement data relating to current operating conditions of the energy storage System, —based on at least the measurement data, estimating at least one battery state of each one of the battery packs, wherein said at least one battery state is at least one of an open circuit voltage and a state of charge, —based on the estimated at least one battery state of each one of the battery packs, controlling electrical connection of each battery pack to the load via the at least one respective switching device.

Method for controlling electrical connection of battery packs

A method for improving the availability of an energy storage or transformation, EST, system of a vehicle. The method comprises providing an EST system model of coupled EST components of the EST system, identifying a fault or error in an EST condition parameter of the EST system, estimating an output value of the EST condition parameter based on the EST system model, identifying a vehicle situation which, in case of an at least temporary lack of operability of the EST system, belong to a predetermined group of vehicle situations defined as hazardous, and in response to identifying the vehicle situation belonging to the predetermined group of vehicle situations defined as hazardous, operating the EST system despite the fault or error in the EST condition parameter using the estimated output value of the EST condition parameter based on the EST system model.

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Gothenburg, Sweden

Bassem Farag