METHOD OF COOLING BATTERY CELLS

A method of cooling an array of battery cells within a chamber in a housing, the battery cells being electrically connected via a busbar having at least one terminal tab for connection to an electrical terminal in the housing, the method comprising the steps of: supplying coolant through an opening in the housing into the chamber; and diverting at least a part of the coolant flow from its inlet flow path due to impingement of the flow upon part of the terminal tab.