BATTERY, AND BATTERY PACK AND VEHICLE COMPRISING THE SAME

A battery can includes an electrode assembly having a first electrode, a second electrode and a separator interposed between the first electrode and the second electrode. The first electrode includes a first active material region and a first uncoated region, and the second electrode includes a second active material region and a second uncoated region. A first current collector is coupled to the first uncoated region on the electrode assembly. A battery housing accommodates the electrode assembly and the first current collector and is electrically connected with the second uncoated region having a polarity opposite to the first uncoated region. An insulator is interposed between an inner surface of the battery housing facing the first uncoated region or the first current collector and the first uncoated region or the first current collector to block an electrical connection between the first uncoated region and the battery housing.