BATTERY SYSTEM, COOLER AND METHOD FOR MONITORING A BATTERY SYSTEM

The present disclosure refers to a battery system (100), including a battery pack (10) including a housing (11) and a plurality of battery cells (12) accommodated within the housing (11), and a cooler (20) thermally connected to the battery cells (12) and an underbody protection structure (30). The cooler (20) is arranged between the underbody protection structure (30) and the battery pack (10). The cooler (20) includes at least one cooling channel (22) and at least one pressure detection channel (24) separated from the cooling channel (22) and arranged inside the cooler (20). The battery back further includes a pressure detection device (40) with a pressure sensor (42) fluidly connected to the pressure detection channel (24) and adapted to detect an underbody contact or impact event by monitoring the pressure in the pressure detection channel (24) by the pressure sensor (42).