BATTERY CELL ASSEMBLY, BATTERY MODULE AND BATTERY PACK

The present disclosure relates to the technical field of energy storage devices, and provides a battery cell assembly (10), a battery module (100), and a battery pack (200). The battery cell assembly (10) includes: at least two battery cells (1) and an insulation film (2). The at least two battery cells (1) are stacked. Each battery cell (1) includes an electrode assembly (11) and a battery housing (12). The electrode assembly (11) is accommodated in the battery housing (12). The electrode assembly (11) includes a first electrode plate (111), a second electrode plate (112), and a separator (113) disposed between the first electrode plate (111) and the second electrode plate (112). The insulation film (2) surrounds a periphery of the at least two battery cells (1) to wrap the at least two battery cells (1) together. Agap between adjacent battery cells (1) is reduced, which is advantageous not only in increasing an energy density of the battery module (100) and the battery pack (200), but also in reducing the amount of consumption of the insulation film (2).