A battery apparatus includes a battery cell stack in which a plurality of battery cells are stacked, and a heat sink located on one side of the battery cell stack, wherein the heat sink includes a cooling pipe, at least one rupture part, and a sealing material layer.

A button-type secondary battery has a diameter greater than a height thereof. The button-type secondary battery includes an electrode assembly; a can body in which the electrode assembly is accommodated; a base plate configured to cover an opening of an upper end of the can body and bonded to the can body, the base plate having a through-hole therein; an electrode terminal of which at least a portion is disposed into the through-hole to cover the through-hole; and an insulating gasket configured to insulate the electrode terminal from the base plate. The electrode terminal, the insulating gasket, and the base plate are bonded to each other through thermal fusion.

A technology for improving molding properties while minimizing curling after molding in a battery packaging material comprising a laminate that is provided with a barrier layer, a heat-sealable resin layer positioned on one surface side of the barrier layer, and a polyester film positioned on the other surface side of the barrier layer. This battery packaging material is configured from at least a laminate provided with a barrier layer, a heat-sealable resin layer positioned on one surface side of the barrier layer, and a polyester film positioned on the other surface side of the barrier layer. The birefringence of the polyester film is in the range of 0.016-0.056.

A lithium-ion rechargeable battery 1 includes a battery part 10 which performs charging and discharging using lithium ions, and a shell 30 for housing the battery part 10 in the interior thereof. The shell 30 is constituted by thermally adhering a first laminated film 31 which includes a first metal layer 313 and a first thermo-adhesive resin layer 315, a second laminated film 32 which includes a second metal layer 323 and a second thermo-adhesive resin layer 325 by thermally adhering the first thermo-adhesive resin layer 315 and the second thermo-adhesive resin layer 325. Moreover, the positive electrode side of the battery part 10 is electrically connected to the first metal layer 313 of the first laminated film 31, and the negative electrode side of the battery part 10 is electrically connected to the second metal layer 323 of the second laminated film 32.

A battery cell includes a cell body and a housing. The housing defines an accommodation cavity. The cell body is accommodated in the accommodation cavity. The housing includes an injection port communicating with the accommodation cavity. The battery cell further includes: a sealing pin, vertically mounted at the injection port and fixed to the housing. The sealing pin includes a first through-hole, and the first through-hole communicates with the accommodation cavity; a thermally deformable piece, filling in the first through-hole and fixed to the sealing pin; and an elastic element. The elastic element includes a second through-hole and is set around the sealing pin through the second through-hole and fixed to the injection port. The thermally deformable piece deforms when a temperature is higher than a preset threshold, so that a pressure relief channel communicating with both ends of the first through-hole is formed in the first through-hole.

A battery cell includes a cell body and a housing. The housing defines an accommodation cavity. The cell body is accommodated in the accommodation cavity. The housing includes an injection port communicating with the accommodation cavity. The battery cell further includes: a sealing pin, vertically mounted at the injection port and fixed to the housing. The sealing pin includes a first through-hole, and the first through-hole communicates with the accommodation cavity; a thermally deformable piece, filling in the first through-hole and fixed to the sealing pin; and an elastic element. The elastic element includes a second through-hole and is set around the sealing pin through the second through-hole and fixed to the injection port. The thermally deformable piece deforms when a temperature is higher than a preset threshold, so that a pressure relief channel communicating with both ends of the first through-hole is formed in the first through-hole.

Various embodiments are directed to electrochemical cells having ink-based indicia printed thereon and methods for printing ink-based indicia on electrochemical cells. Specifically, various embodiments comprise a container containing electrochemically active materials, such as an anode and a cathode in electrical contact with the container, a negative cover sealed over an open end of the container and in electrical contact with the anode, and an ink-based indicia printed on an external surface of the container. The electrochemical cell may additionally comprise an insulating composition, such as a preformed ring or form-in-place insulator, surrounding the negative cover to impede unintentional short circuiting between the negative cover and positively charged container. The exterior of the electrochemical cell may additionally be coated a clear final coating layer to protect the electrochemical cell and the printed indicia.

A battery includes: a positive electrode current collector, a positive electrode active material layer, a solid electrolyte layer containing a solid electrolyte, a negative electrode active material layer, and a negative electrode current collector that are laminated in this order; and a sealing member. The battery has an opening hole penetrating the positive electrode current collector, the positive electrode active material layer, the solid electrolyte layer containing the solid electrolyte, the negative electrode active material layer, and the negative electrode current collector in a laminating direction and further includes a sealing member. In cross-sectional view perpendicular to the laminating direction, the sealing member is located between the opening hole and each of the positive electrode active material layer, the solid electrolyte layer, and the negative electrode active material layer.

A hot-press system for folding a surface of a pouch-type secondary battery, the hot-press system including: a first folded surface pressing unit configured to hold a main chamber and long-side terraces, which have folded surfaces, of a secondary battery, the first folded surface pressing unit being configured to primarily press the folded surfaces while applying heat and pressure to the folded surfaces, and a second folded surface pressing unit configured to hold the main chamber and the long-side terraces, which have the folded surfaces, of the secondary battery guided from the first folded surface pressing unit, the second folded surface pressing unit being configured to secondarily press the folded surfaces while applying heat and pressure to the folded surfaces.

The present invention relates to a battery cell and a battery module comprising the same, and relates, particularly, to a direct water-cooling battery cell and a direct water-cooling battery module comprising the same. According to the present invention, the corrosion resistance of the battery cell can be improved by using a sacrificial metal having a higher metal ionization tendency than that of a battery cell case, and the heat of the battery cell can be cooled by using general cooling water for vehicles.