A battery assembly includes at least one enclosure structure that is thermoformed about a battery assembly of a battery pack. A method of enclosing a battery assembly can include placing a sheet of material adjacent a battery assembly of a battery pack; and thermoforming the sheet of material about the battery assembly to provide an enclosure structure for the battery assembly.

A battery module includes: a cell stack comprising a plurality of battery cells stacked in a direction; and side covers on opposite sides of the cell stack, wherein each of the side covers includes: a plate-shaped side plate comprising a plurality of coupling holes; and an insulating molded product comprising a coupling portion filling the coupling holes.

An apparatus for manufacturing a pouch-type battery case according to an embodiment may be configured to mold a pouch sheet. The apparatus for manufacturing the pouch-type battery case may include a forming device configured to mold a cup part in the pouch sheet, a first roller disposed behind the forming device in a moving direction of the pouch sheet and rotating in contact with one surface of the pouch sheet, and a second roller disposed to face the first roller with the pouch sheet therebetween and rotating in contact with the other surface opposite to the one surface of the pouch sheet. Any one of the first roller and the second roller may have an outer diameter that gradually decreases inward in a thickness direction, and the other one of the first roller and the second roller may have an outer diameter that gradually increases inward in the thickness direction.

Disclosed is a tool (10) for welding a workpiece (21) by means of friction welding, in particular by means of ultrasound, wherein the tool (10) has a working surface (5) which contains at least one, preferably several, grooves (6). The working surface (5) has a curvature. The invention also relates to a method for welding a workpiece and a welded workpiece.

An apparatus for molding a pouch includes: a die assembly with a die; a stripper assembly to press and fix both sides of a pouch film disposed on the die; and a punch assembly with a punch to mold an electrode assembly accommodation part in the pouch film. The stripper assembly includes: a stripper disposed at a punch assembly lower portion to press and fix the pouch film; a stripper driving piece at a punch assembly upper portion to provide force so that the stripper presses the pouch film; and a connection part to connect the stripper driving piece to the stripper to transmit the force. The connection part includes: two or more connection rods coupled to the stripper; a connection bar coupled to the stripper driving piece; and a connection piece to connect one or more of the connection rods to the connection bar to transmit the force.

An ultrasonic inspection system determines whether or not a thermally conductive resin forming a thermally conductive resin layer is filled through a waveform change of an ultrasonic wave measured by transmitting the ultrasonic wave toward a portion of an edge of a bottom surface of a module frame from the outside. An ultrasonic sensor at one of two opposite edges of an exterior surface of the bottom surface of the module frame determine a height of the resin within the battery module.

A thermoformed article is made by melt-mixing and extruding pellets and optionally a further propylene-based polymer to obtain a sheet and thermoforming the sheet. The pellets are pellets of a glass fiber-reinforced thermoplastic polymer composition having a sheathed continuous multifilament strand including a core that extends in the longitudinal direction and a polymer sheath which intimately surrounds said core, wherein the core contains at least one continuous glass multifilament strand, the polymer sheath includes a thermoplastic polymer composition containing a polyolefin and having a melt flow index as measured according to ISO1133-1:2011 (2.16 kg/230 C.) of at least 1.0 dg/min and less than 47 dg/min. The length of the glass filaments in the pellets is substantially the same as the pellet length, and is 10 to 55 mm, preferably 10 to 40 mm, more preferably 10 to 30 mm and most preferably from 10 to 20 mm.

A fusion tip of a heat fusion machine assembling a sub-material including a boss or rib with a base material and then heat-fusing the boss or rib to fix the sub-material and the base material includes a base tip including a pinhole formed vertically in a center and a tip head contacting the boss or rib during heat fusion and a fusion pin positioned in the pinhole and configured to move up and down separately from the base tip.

A pressing plate tool is disclosed that includes a pressing plate assembly that includes: a pressing plate provided with a via hole extending in a first direction; a pressing head being capable of moving relative to the pressing plate in the first direction, the pressing head being provided with a position-limiting hole extending in the first direction, the position-limiting hole being coaxial and in communication with the via hole; and a position-limiting member including a head portion and a rod portion, the rod portion including a first rod portion and a second rod portion connected in the first direction, a thread being formed on the first rod portion, the thread of the first rod portion being fastened to a thread in the via hole, the second rod portion extending into the position-limiting hole, and the second rod portion being clearance-fitted to an inner surface of the position-limiting hole.

A method for manufacturing an electric vehicle battery case includes: preparing a frame configured to define a through space inside and a flat plate made of resin; superposing and disposing the flat plate on the frame; and applying pressure to the flat plate from an opposite side from the frame to press the flat plate against the frame to cause the flat plate to swell in the through space, thereby deforming the flat plate into a tray having a bathtub shape including a bottom wall and a peripheral wall provided at a peripheral edge of the bottom wall and configured to define an opening portion, and joining by press-fitting the tray to the frame.