Battery Module, Battery Pack Including Battery Module, And Vehicle Including Battery Pack

A battery module includes: a plurality of battery cells stacked on one another; a cell housing configured to accommodate the plurality of battery cells; and a cover bus bar configured to cover an entire upper side of the cell housing and including electrode connection layers. The cover bus bar may be electrically connected to electrodes of the plurality of battery cells through the electrode connection layers. The electrode connection layers may be arranged in a layered structure.