Battery cooling system

摘要

A cordless power tool (20) has a housing (22) which includes a mechanism (24) to couple with a removable battery pack (26). The battery pack (26) includes one or more battery cells (36) as well as a vent system (38) in the battery pack housing (34) which enables fluid to move through the housing (34). A mechanism (46, 48, 50, 52, 72, 76, 77, 84, 106, 108, 110, 132) is associated with the battery pack (26) to dissipate heat from the battery pack.