BATTERY PACK AND VEHICLE

A battery pack and a vehicle. The battery pack comprises: a first battery group (10), a second battery group (20), a first case body (50), and a second case body (60). The first case body (50) and the second case body (60) are stacked, the first case body (50) has a first cavity (30), the first battery group (10) is accommodated in the first cavity (30), the second case body (60) has a second cavity (40), and the second battery group (20) is accommodated in the second cavity (40).