A METHOD AND ARRANGEMENT FOR CONTROLLING CHARGING OF AN ELECTRICAL STORAGE SYSTEM IN A VEHICLE

摘要

The invention relates to a method for controlling charging of an electric energy storage system (7) in a vehicle (1) comprising an electric machine (3) which is arranged for propulsion of said vehicle (1). The method comprises: initiating said charging upon connection of said energy storage system (7) to an external power supply (11) via a first connector element (9) associated with said vehicle (1) and a second connector element (10) associated with said external power supply (11); and monitoring a contact resistance defined by the connection of said connector elements (9, 10). Furthermore, the method comprises: measuring and calculating the power loss over said connector elements (9, 10) during said charging; and generating an error signal if said power loss is higher than a predetermined threshold value, said error signal being dependent on the magnitude of said power loss. The invention also relates to an arrangement for controlling charging of an electric energy storage system (7) in a vehicle (1).