Usage of vibration data for route planning and extending battery pack lifetime
AssigneeVolvo Truck Corporation
InventorsDripta RAY, Faisal ALTAF
Life of this patent
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Abstract
A computer-implemented method establishes map relating geographical location to vibration health impact on electrical energy storage systems adapted for providing propulsion power for a vehicle. A computer-implemented method improves a lifetime of an electrical energy storage system adapted for providing propulsion power for a vehicle when travelling on a route from an origin to a destination for accomplishing a mission.
Claims15
A computer-implemented method for establishing map relating geographical location to vibration health impact on electrical energy storage systems adapted for providing propulsion power for a vehicle, the method comprising:
- estimating a present state of health of the electrical energy storage system;
- determining mechanical vibration magnitude and vibration frequency spectrum of the electrical energy storage system;
- determining location data indicating the location of the vehicle in a geographical area at which the mechanical vibration magnitude and vibration frequency spectrum of the electrical energy storage system occurred,
- determining a degree of impact of the vibrations of the electrical energy storage system on the state of health of the electrical energy storage system by processing the determined vibration magnitude and vibration frequency spectrum in a vibration-SOH model adapted to infer a relationship between vibration magnitude and vibration frequency spectrum, and state of health;
- accessing a map database having stored geographical locations with associated degrees of impact on the state of health of electrical energy storage systems, and
- updating the map database with the location data and the associated degree of impact at the location.
A computer-implemented method for improving a lifetime of an electrical energy storage system adapted for providing propulsion power for a vehicle when travelling on a route from an origin to a destination for accomplishing a mission, the method comprising:
- acquiring data of a present state of health of the electrical energy storage system;
- accessing a map database having stored geographical locations with associated degrees of impact on the state of health of electrical energy storage systems caused by vibrations of the electrical energy storage systems,
- selecting, from the map database, at least one of a route and a mission covering geographical locations stored in the map database, the at least one of a route and a mission is selected so that a degree of impact of the vibrations on the state of health of the electrical energy storage system minimized while still accomplishing the mission;
- and
- providing the at least one of a route and a mission to the vehicle.
A fleet management system configured to select a route and a mission for vehicles of a fleet, each vehicle comprising an electrical energy storage system, the fleet management system comprising:
- a memory storage to store a map database having stored routes and missions with associated degrees of impact of vibration of the electrical energy storage system on the state of health of the electrical energy storage system, the degrees of impact being pre-determined by processing a determined vibration magnitude and vibration frequency spectrum of energy storage systems in the fleet in a vibration-SOH model adapted to infer a relationship between vibration magnitude and vibration frequency spectrum, and state of health,
- a data input arrangement to receive present state of health of each electrical energy storage system of the fleet;
- and
- a control unit to select at least one of a route and a mission from the map database that reduces the overall determined degree of impact of the vibrations on the state of health of the electrical energy storage system in the fleet while still accomplishing the missions of the fleet.
Dependencies are inferred from the claim text.