Soft package battery cell module based on tab heat dissipation and battery pack

The invention provides a soft package battery cell module based on tab heat dissipation and a battery pack. The soft package battery cell module based on tab heat dissipation comprises a shell, a battery cell and a fan. The shell is provided with a mounting cavity and is provided with an air inlet and an air outlet; the mounting cavity comprises at least one mounting layer in the width direction of the tabs, each mounting layer is provided with a plurality of battery cells, the placement directions of all the battery cells are the same, each battery cell comprises a main body and the tabs, the end part of the main body in the length direction is a connecting end, the connecting end is connected with the tabs, and the wall surface of the mounting cavity facing the connecting end is an air duct wall; the connecting end and the air duct wall are arranged at an interval to define a heat dissipation air duct, and the air inlet and the air outlet are both communicated with the heat dissipation air duct; the fan is