FIRE SUPPRESSION ARRANGEMENT

The present invention relates to a fire suppression arrangement () for suppressing a fire in a battery pack, such as a lithium-ion battery pack (), said arrangement () comprising said battery pack (), and a thermal management system () comprising a liquid circuit () for circulating a liquid to control the temperature of said battery pack (). The liquid circuit () comprises at least one opening () which is closed by a sealing member () comprising a fusible portion (), wherein said fusible portion () is configured to melt when exposed to a temperature above a predetermined activation temperature, thereby allowing liquid to be discharged from said liquid circuit () through said opening () to cool a portion of said battery pack () in the event of an abnormal temperature rise near said opening ().