The present disclosure teaches methods of manufacturing hybrid metal/composite battery trays. The hybrid trays, which may be deep, may be made of a metallic (e.g., steel or aluminum alloy), cruciform-shaped partial tray with four, polymer/fiber composite rounded corner inserts that are attached to recessed corners of the partial tray. Overlapping bond joints may be co-molded. Overlapping metallic bond surfaces may be pre-treated by laser ablation and/or by plasma exposure, to increase the bond strength between overlapping metal and polymer/fiber composite surfaces. Mechanical interlocking features may be used to increase joint strength. Hybrid metal/composite trays may be fabricated by press-forming dissimilar parts using a molding tool and a press. Resin Transfer Molding (RTM) with thermoset resin may be used for co-molding four, fibrous preform corner inserts to the cruciform-shaped partial tray. Alternatively, press-forming and curing may be used for attaching thermoplastic polymer/fiber composite prepreg corner inserts to the cruciform-shaped partial tray.

A shaping apparatus for a pouch-shaped battery case includes a punch configured to press a laminate sheet in order to shape an electrode assembly receiving portion of the pouch-shaped battery case, a die in which an accommodation portion is formed having a size corresponding to the electrode assembly receiving portion, a holder configured to fix an outer periphery of the laminate sheet, and an electromagnetic field-generating means attached to the punch and configured to generate an electromagnetic field. A pouch-shaped battery case shaping process uses the shaping apparatus to manufacture the pouch-shaped battery case.

Discussed is a battery pack case configured to receive a plurality of battery cells, the battery pack case including a first case and a second case coupled to each other through and engagement between first case and the second case. A projecting portion is on a coupling portion of the first case at a middle part of the first case in a thickness direction to project therefrom, a grooved portion is in a coupling portion of the second case at a middle part of the second case in a thickness direction thereof such that the projecting portion is inserted into the grooved portion, and a uniform gap between the outside of the projecting portion of the first case and the outside of the grooved portion of the second case in the state in which the first case and the second case are coupled and thermally fused to each other.

The present invention relates to a pouch-shaped secondary battery sealing apparatus and a pouch-shaped secondary battery manufacturing method capable of radiating an infrared laser to a sealed portion in an overlapping state, whereby it is possible to increase sealing force, to prevent occurrence of wrinkles, and to reduce sealing time when forming a sealed portion of a pouch-shaped secondary battery case.

A pouch type battery case has a pair of cases in which at least one of the pair of cases includes: a cup part, a terrace, and a protrusion. The cup part is recessed; a and the terrace is disposed on a circumference of the cup part and has a sealing part. The protrusion protrudes from the terrace in a direction opposite to a depth direction of the cup part and at least a portion of the sealing part is provided on the protrusion. An apparatus for manufacturing the pouch type battery case is also provided.

A pouch-shaped battery case shaping apparatus includes a die having an open recess sized to correspond to an electrode assembly, a punch configured to draw a sheet into the open recess and thereby shape the sheet, a holder configured to fix ends of the sheet to the die during drawing of the sheet, and a lubricant supply unit configured to supply a lubricant to the sheet to minimize surface damage to the sheet due to the drawing of the sheet. A pouch-shaped battery case manufacturing process uses the pouch-shaped battery case shaping apparatus to shape the sheet.

An apparatus for folding a battery cell according to an embodiment of the present invention may fold a sealing part of a pouch-type battery cell. The apparatus for folding the battery cell includes a base on which an accommodation part of the battery cell is seated, a guide protruding upward from each of both sides of the base to wrap the accommodation part at both sides, a pressing member configured to press the sealing part so that the sealing part is folded toward an outer surface of the guide, a heating member configured to heat the sealing part when the pressing member presses the sealing part, and a cooling member configured to inject cold air to the folded sealing part.

A material processing method and a molding machine therefor are described. The molding machine comprises a pressing module, a heating module, and an air supplying module. The method comprises: placing material to be processed within a material molding space of the molding machine, and supplying air to an air passage provided in the material by the air supplying module; heating the material by the heating module according to a preset heating parameter; and pressing the material by the pressing module according to a preset pressing parameter.

The invention relates to a battery shell, in particular a battery shell of a traction battery, the battery shell being molded from a molding compound and a continuous-fiber-reinforced insert, the continuous-fiber-reinforced insert having a first surface of which greater than or equal to 50%, preferably greater than or equal to 60%, and particularly preferably greater than or equal to 75%, is not overpressed by the molding compound.

Furthermore, the invention relates to a tool for producing this battery shell and a method for producing the battery shell.

The invention also relates to a traction battery comprising said battery shell and to a motor vehicle comprising said battery shell.

The present invention relates to a method for forming a pouch, and the method for forming the pouch according to the present invention comprises: a curling process of bending a pouch sheet in a round shape; a seating process of seating the bent pouch sheet on a lower mold, in which a molding groove is formed; and a forming process of pressing the pouch sheet by using a punch mold to form an accommodation part, in which an electrode assembly is accommodated, in the pouch sheet.