A CHARGING SYSTEM FOR AN ENERGY STORAGE IN A VEHICLE AND A METHOD FOR CONTROLLING THE CHARGING SYSTEM

The invention relates to a charging system (100) for an energy storage (102) in a vehicle (500) comprising: a plurality of parallelly arranged charging switch units (104a-d), each charging switch unit having an input terminal (106a-d) configured to be connected to a common charging port (108), and an output terminal (110a-d) configured to be connected to the energy storage, wherein each charging switch unit comprises a contactor (200) configured to control a flow of current from the charging port to the energy storage, the contactor being configured to have a controllable contact force; for each charging switch unit, a measurement device (202) configured to determine a parameter indicative of a resistance in a current path through the charging switch unit; and a charging control unit (116) connected to each of the charging switch units and configured to, if a difference in resistance between any two of the plurality of current paths is higher than a predetermined difference threshold value, control the contact force of a contactor in a charging switch unit in the current path having the lowest resistance to increase the resistance of that current path.