Abstract: Disclosed is an electrode assembly, a battery, and a battery pack and a vehicle including the same. In the electrode assembly, a first electrode, a second electrode, and a separator interposed therebetween are wound based on a winding axis to define a core and an outer circumference. The first electrode includes a first active material portion coated with an active material layer and a first uncoated portion not coated with an active material layer along a winding direction. At least a part of the first uncoated portion is defined as an electrode tab by itself. The first uncoated portion includes a first portion adjacent to the core of the electrode assembly, a second portion adjacent to the outer circumference of the electrode assembly, and a third portion interposed between the first portion and the second portion. The first portion or the second portion has a smaller height than the third portion in the winding axis direction.

Abstract: A battery mounting structure for a vehicle is provided to include a case having a first internal member that is disposed to be spaced parallel to an upper side of a lower panel of the case and a second internal member that is disposed perpendicular to the first internal member, and configured to accommodate a plurality of battery modules therein using the first internal member and the second internal member. An outer side member is provided in a shape protruding toward the outside on an outer side of the case. The battery modules are disposed in a stacking direction of battery cells that is parallel to a longitudinal direction of the first internal member.

Abstract: The present invention provides a cooling structure for high voltage electrical parts of an HEV, in which a plurality of high voltage electrical parts including a DC-DC converter, an inverter, and an air conditioner inverter are arranged on a cross section of a cooling air passage in a direction horizontal to the flow of cooling air, a cooling blower for cooling the high voltage electrical parts is mounted on one side of an electrical part package in the opposite direction, and; and a duct is integrally formed on an upper portion of the blower so that the cooling air passing through the electrical part package is discharged therethrough, thereby being able to supply the cooling air at the same temperature to the plurality of high voltage electrical parts and mount the electrical part package in a relatively small space.