Abstract: A luggage board for a vehicle includes a core layer; a first layer covering a portion of the core layer; and a second layer covering a remaining portion of the core layer except for a region covered by the first layer. End portions of the first layer and the second layer disposed on a side surface of the core layer are bonded to each other.

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: An electrode assembly, a battery, a battery pack and a vehicle including the same are provided. In the electrode assembly, the uncoated portion of an electrode includes a segment region divided into a plurality of segments, and the segment region includes a plurality of segment groups separated by a group separation pitch along a winding direction. One end of the electrode assembly includes a plurality of segment alignments. In winding turns corresponding to the plurality of segment alignments, group separation pitches of segment groups disposed in a same winding turn are substantially identical, and separation pitches of the segment groups is greater in a winding turn of a region adjacent to the outer circumference of the electrode assembly than in a winding turn of a region adjacent to the core of the electrode assembly.

Abstract: The present invention relates to a high strength light-weight ceramic insulator and a method for manufacture thereof wherein the light-weight ceramic insulator may be used at a high temperature by using a heat-resisting ceramic fiber. A colloidal silica or colloidal alumina which is an inorganic binder, and a methyl cellulose or a liquid-phase organic polymer which is an organic binder are added to an alumina-silica-based fiber containing zirconia, a concentration thereof is adjusted, a slurry is vacuum-molded, and drying and heating are carried out, thereby fabricating the ceramic insulator. Here, it is possible to fabricate the high strength light-weight ceramic insulator by artificially selectively positioning the inorganic binder to a contact point of the fibers.