Abstract: A frame structure for a vehicle includes: an inner panel connected to a side member and defining an inner side of a rear part of the side member; an outer panel connected to a rear side of the side member and coupled to an outer side of the inner panel defining a closed cross-section together with the inner panel and defining an outer side of the rear part of the side member; an opening portion formed below the inner and outer panels partially opening the closed cross-section so that a front end of a rear suspension arm can be inserted into the opening portion; and a reinforcing member disposed in the opening portion defining the closed cross-section together with the outer panel and the inner panel and configured to close an internal space in the outer and inner panels.

Abstract: A frame structure for a purpose built vehicle (PBV) includes: two main side members extending while gradually rising toward a front of the PBV and extending in a front/rear direction to be disposed on either side of the PBV; two auxiliary side members respectively extending in a front/rear direction to be disposed on a lower side of the two main side members; a front cross member connecting the two auxiliary side members in a lateral direction of the PBV; and a plurality of vertical members respectively connecting the main side members and the auxiliary side members in a vertical direction.

Abstract: A frame for a purpose-built vehicle (PBV) includes: a front part frame positioned at a front side of a vehicle; a rear part frame positioned at a rear side of the vehicle; and a center part frame. The center part frame has a rectangular planar shape and is coupled between the front part frame and the rear part frame.

Abstract: A vehicle frame structure includes: an inner panel connected to a side member and defining the inside of the side member; an outer panel connected to the side member and coupled to the inner panel forming a closed section with the inner panel and defining the outside of the side member; an opening formed in lower sides of the inner panel and outer panel to partially open the closed section such that a front end of a rear suspension arm can be inserted therein; a first reinforcement member provided in the opening forming a first closed portion with the inner panel; and a second reinforcement member provided in the opening forming a second closed portion with the inner panel, the outer panel, and the first reinforcement member and to isolate a space formed by the inner panel and the outer panel from an outer portion.

Abstract: Disclosed herein is a coupled torsion beam axle type rear suspension system that includes a coupled torsion beam axle (100) installed to extend in a transverse direction of a vehicle body, a pair of trailing arms (200) coupled to respective ends of the coupled torsion beam axle (100), and a transverse leaf spring (300) having both ends connected to the respective trailing arms (200) and a center portion connected to a body cross member (40), thereby reducing the number of parts and improving driving stability.

Abstract: Disclosed herein is a coupled torsion beam axle type rear suspension system that includes a coupled torsion beam axle (100) installed to extend in a transverse direction of a vehicle body, a pair of trailing arms (200) coupled to respective ends of the coupled torsion beam axle (100), and a transverse leaf spring (300) having both ends connected to the respective trailing arms (200) and a center portion connected to a body cross member (40), thereby reducing the number of parts and improving driving stability.

Abstract: A frame for a purpose-built vehicle (PBV) includes: a front part frame positioned at a front side of a vehicle; a rear part frame positioned at a rear side of the vehicle; and a center part frame. The center part frame has a rectangular planar shape and is coupled between the front part frame and the rear part frame.

Abstract: A frame structure for a purpose built vehicle (PBV) includes: two main side members extending while gradually rising toward a front of the PBV and extending in a front/rear direction to be disposed on either side of the PBV; two auxiliary side members respectively extending in a front/rear direction to be disposed on a lower side of the two main side members; a front cross member connecting the two auxiliary side members in a lateral direction of the PBV; and a plurality of vertical members respectively connecting the main side members and the auxiliary side members in a vertical direction.

Abstract: A frame for an electric vehicle includes a front part frame located at a front of the vehicle; a rear part frame located at a rear of the vehicle; and a central part frame configured in a flat shape to be coupled between the front part frame and the rear part frame and to accommodate a battery therein.

Abstract: A vehicle battery pack case includes a battery bolt provided on a lateral side of a vehicle frame; a first nut provided outside the battery bolt, externally and internally formed with an internal screw thread and an external screw thread, of which tightening directions are opposite to each other, and tightened to the battery bolt through the internal screw thread; and a second nut provided outside the battery bolt and the first nut, and tightened to the first nut through the external screw thread formed on the first nut.

Abstract: A frame structure for a purpose built vehicle (PBV) includes: an inner panel connected to the rear of a middle part of a side member to form an inner side of a rear part of the side member, a front outer panel connected to the rear of the middle part of the side member and coupled to an outer side of the inner panel to form a closed cross-section, a center outer panel connected to the rear of the front outer panel and coupled to the outer side of the inner panel to form a space in which a rear suspension member is coupled, and a rear outer panel connected to the rear of the center outer panel and coupled to the outer side of the inner panel to form a closed cross-section.

Abstract: An apparatus for coupling a trailing arm may include a carrier having defining an open space on one side thereof, a trailing arm, one end of which includes an extension inclined at a predetermined angle and inserted into the space, and an assist arm, an end of which is inserted into the space and positioned on one side of the extension, in which the extension and the end of the assist arm inserted into the space may be integrally coupled to the carrier.

Abstract: A binder composition for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same. The binder composition includes lithium polyacrylate and a solvent and has a viscosity of about 500 cps to about 5000 cps.

Abstract: In an aspect, a rechargeable lithium battery that includes a positive electrode; negative electrode; a separator interposed between the positive electrode and the negative electrode and including a porous substrate and a coating layer formed on at least one side of the porous substrate; and an electrolyte including a lithium salt, a non-aqueous organic solvent, and an additive is provided.

Abstract: In an aspect, a negative electrode for a lithium secondary battery and a method of manufacturing the same is provided. The negative electrode for the lithium secondary battery includes a negative active material layer.

Abstract: An electrolyte for a rechargeable lithium battery including a lithium salt, a non-aqueous organic solvent, and an additive, wherein the additive includes a compound represented by Chemical Formula 1 and a rechargeable lithium battery including the same.

Abstract: An apparatus for coupling a trailing arm may include a carrier having defining an open space on one side thereof, a trailing arm, one end of which includes an extension inclined at a predetermined angle and inserted into the space, and an assist arm, an end of which is inserted into the space and positioned on one side of the extension, in which the extension and the end of the assist arm inserted into the space may be integrally coupled to the carrier.

Abstract: A binder composition for a rechargeable lithium battery includes: an interpenetrating polymer network (IPN) structure including a cyclic polymer including a structural unit represented by Chemical Formula 1 or a structural unit represented by Chemical Formula 2, and polyacrylamide. A method of preparing the same, and an electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same are also disclosed. In Chemical Formulae 1 and 2, R1 to R3, R11 to R16, and n and m are the same as defined in the detailed description.

Abstract: An additive, the additive being for an electrolyte for a lithium secondary battery and represented by Chemical Formula 1: R1 to R4 each independently being hydrogen or a non-polar hydrocarbon group, is disclosed. An electrolyte, the electrolyte being for a lithium secondary battery and including: a non-aqueous organic solvent; a lithium salt; and the additive is also disclosed. A lithium secondary battery including: a positive electrode; a negative electrode facing the positive electrode; and a separator between the positive electrode and the negative electrode, the separator being impregnated with an electrolyte including the additive, is also disclosed.

Abstract: In an aspect, a rechargeable lithium battery that includes a positive electrode; negative electrode; a separator interposed between the positive electrode and the negative electrode and including a porous substrate and a coating layer formed on at least one side of the porous substrate; and an electrolyte including a lithium salt, a non-aqueous organic solvent, and an additive is provided.