A pouch type battery case configured to accommodate an electrode assembly, in which electrodes and separators are stacked, according to an embodiment of the present invention for achieving the above object includes: a first cup part and a second cup part, which are arranged parallel to a pouch film and formed to be recessed; and a bridge formed between the first cup part and the second cup part and having a constant width and height, wherein the first cup part includes: a first outer wall formed toward an opposite to the bridge; a second outer wall formed toward the bridge; and a first bottom portion configured to connect the first outer wall to the second outer wall, and the second cup part includes: a third outer wall formed toward the bridge; a fourth outer wall formed toward the opposite to the bridge; and a second bottom portion configured to connect the third outer wall to the fourth outer wall, wherein the fourth outer wall has a height greater than that of the first outer wall.

An all-solid-state battery includes a body including a solid electrolyte layer, and an anode layer and a cathode layer alternately stacked with the solid electrolyte layer interposed therebetween. A first external electrode is disposed on one side of the body and includes a first electrode layer and a first conductive resin layer disposed on the first electrode layer, and a second external electrode is disposed on another side of the body and includes a second electrode layer and a second conductive resin layer disposed on the second electrode layer. A protective layer is disposed on an entirety of an external surface of the body free of the first and second electrode layers and on the first and second electrode layers, and at least one opening is included in a region of the protective layer disposed on at least one of the first electrode layer and the second electrode layer.

A method for manufacturing the electrode assembly includes: a first step of preparing a plurality of radical units, each of which is manufactured by alternately stacking an electrode and a separator; a second step of stacking the plurality of radical units to manufacture an electrode stack; and a third step of pressing an outer surface of the electrode stack to manufacture an electrode assembly on which a curved surface having a curvature radius is formed on the electrode stack, wherein, when the sum of bonding force remaining after the third step among bonding force between the electrode and the separator as bonding force generated before the third step is defined as F1, the sum of force by which the electrode and the separator are spread again so that shapes of the electrode and the separator return to shapes before the electrode stack is pressed in the third step is defined as R, and the sum of bonding force additionally generated between the electrode and the separator within the electrode assembly by the third step is defined as F2, expression: F1+R≤F2 is satisfied.

A method for manufacturing a component, the component having a multiplicity of cell foils for storing electrical energy that are stacked on top of one another and at least one contact plate, wherein the cell foils form a foil stack in a connection portion, and the foil stack is connected to the contact plate by at least one weld seam for the electrical contacting of the cell foils via the contact plate. Furthermore, a corresponding component and a device for manufacturing such a component are also specified.

The present invention provides a battery cell capable of uniformly holding an electrode laminate and speeding up a manufacturing process. A battery cell includes an electrode laminate including positive and negative electrodes and an electrolyte layer, in which the positive and negative electrodes are alternately laminated with the electrolyte layer interposed between them; and a tube-shaped insulating member that is heat-shrinkable and holds the electrode laminate, wherein the insulating material has at least two folded parts for positioning a member disposed in the internal space of the insulating member. The insulating member preferably has two portions each between the two folded parts, and the two portions are preferably equal in circumferential length.

The present invention relates to a pouch-shaped battery cell having an electrode assembly in a pouch-shaped battery case, the electrode assembly including positive electrodes and negative electrodes, each of the positive electrodes and the negative electrodes having a structure in which the length of the electrode in a width direction is less than the length of the electrode in a length direction, each of the positive electrodes and the negative electrodes has an uncoated portion extending parallel to outer peripheries of the electrode in the overall width direction or outer peripheries of the electrode in the overall length direction and a coated portion, which is coated with an electrode mixture, formed at the remaining portion of the electrode excluding the uncoated portion, and a stepped structure is formed at the part of the pouch-shaped battery case corresponding to the uncoated portion so as to be recessed inwards.

The present invention relates to an electrode manufacturing method for manufacturing a foldable battery cell, the electrode manufacturing method including a coating step of forming an electrode mixture coated portion on an electrode sheet so as to include an uncoated portion having no electrode mixture formed thereon by coating, a step of slitting the electrode sheet into a plurality of unit electrode sheets, and a step of notching the slit electrode sheet, wherein the uncoated portion includes an electrode tab formation portion and a folding portion formed so as to be parallel to a direction in which the electrode sheet is taken out.

An all-solid-state battery includes a body including a solid electrolyte layer, and an anode layer and a cathode layer alternately stacked with the solid electrolyte layer interposed therebetween. A first external electrode is disposed on one side of the body and includes a first electrode layer and a first conductive resin layer disposed on the first electrode layer, and a second external electrode is disposed on another side of the body and includes a second electrode layer and a second conductive resin layer disposed on the second electrode layer. A protective layer is disposed on an entirety of an external surface of the body free of the first and second electrode layers and on the first and second electrode layers, and at least one opening is included in a region of the protective layer disposed on at least one of the first electrode layer and the second electrode layer.

An electrode assembly includes a unit cell A in which a first electrode 110, a second electrode 120, and a separator 130 disposed between the first and second electrodes 110 and 120 are stacked on each other or a structure in which the unit cells A are repeatedly stacked with the separator therebetween. A first electrode tab 111 protrudes from the first electrode 110, and a second electrode tab 121 protrudes from the second electrode 120, and the electrodes tabs 111 and 121 have widths that gradually decrease in directions in which the electrodes tabs 111 and 121 protrude outward from the electrodes 110 and 120, respectively.

The disclosure relates to a system comprising a holder and stored energy sources which can be placed in the holder, in particular rechargeable batteries, each having a casing which has side walls and in which are placed electrode plates oriented parallel to the side walls and nonwoven materials containing a bound electrolyte, the electrode plates being placed between adjacent nonwoven materials. The holder consists of at least two supports placed one above the other to hold stored energy sources in such a manner that the side walls of the casing which are oriented parallel to the electrode plates are oriented substantially horizontally. At least one pressure element is situated between the supports and rests on the side walls of the casing of the stored energy sources and transmits at least the weight force of the stored energy sources situated at the top of the holder to stored energy sources situated underneath the stored energy sources situated at the top.