A BATTERY SYSTEM, A METHOD FOR LEAKAGE DETECTION INSIDE A BATTERY SYSTEM AND A VEHICLE INCLUDING A BATTERY SYSTEM

The present invention refers to a battery system comprising a housing comprising a housing frame and a base frame, wherein the housing frame and the base frame enclose a housing space; at least one battery module comprising a plurality of battery cells electrically connected to each other by means of a bus bar, wherein the battery module is disposed in the housing space; at least one tray comprising a tray frame and a tray base; and a liquid detection system integrated with a battery management system, wherein the battery management system is adapted to detect a liquid inside the tray by means of the liquid detection system, wherein the liquid detection system comprises a high-voltage conductor, whose first end is connected to the bus bar and whose second end is disposed between the base frame and the tray base.