Abstract: A pouch case is provided which includes: a forming portion having a predetermined depth, and allowing each of a first end surface and a second end surface of the electrode assembly to be received therein; a notch portion extending from each of opposite ends of the forming portion so as to have a depth gradually decreasing from a depth defined by the thickness of the electrode assembly received in the forming portion; and a storing portion covering a remaining portion other than a portion of the electrode assembly received in the forming portion. By effectively controlling a protruding structure of the pouch case sealed on the first and second end surfaces of the electrode assembly received therein, it is possible to improve contact reliability between the stacked battery cells.

Abstract: Proton conducting materials and membranes and electrochemical devices incorporating the materials and membranes are provided. Also provided are methods of making the materials and membranes and methods of operating the electrochemical devices. The proton conducting materials are solid acids that form superprotonic phases at elevated temperatures. The superprotonic phases have a cubic structure and the general formula: M(1?x)Hy]H2PO4, where M represents one or more monovalent cations or a combination of monovalent cations and divalent cations, 0<x?2/9, and y is a number that provides charge balancing.

Abstract: A battery, a power consumption device, and a method and device for producing a battery are disclosed. The battery includes: a first battery cell and a second battery cell adjacent to each other, the first battery cell including a pressure relief mechanism disposed on a first wall of the first battery cell; a fire-fighting pipeline configured to discharge a fire-fighting medium toward the first wall when the pressure relief mechanism is actuated; and a blocking component protruding from the first wall along a direction perpendicular to the first wall, and the blocking component being configured to block the fire-fighting medium discharged from the fire-fighting pipeline from flowing from the first battery cell to the second battery cell to improve the safety performance of the battery.

Abstract: The present invention relates to an electrode assembly and an inspection method therefor, whereby tab folding and alignment of an electrode may be accurately checked. The electrode assembly, according to one embodiment, has a structure in which at least one unit cell is laminated, the unit cell having a structure of a first electrode/a separator/a second electrode/a separator/a third electrode, wherein the first electrode and the third electrode may each comprise a tab protruding toward the outer periphery of one side, and the second electrode may comprise a tab protruding toward the outer periphery of the other side facing the one side.

Abstract: The present invention provides a method for producing an electrolyte which is capable of retaining a high magnesium ion concentration. A method for producing an electrolyte in accordance with an aspect of the present invention comprises the step of: mixing a solvent, metal magnesium, and an elemental halogen, the metal magnesium being a metal containing magnesium in an amount of not less than 96% by weight with respect to 100% by weight of a total weight of the metal.

Abstract: A battery cell includes electrode assemblies arranged in a first direction, where an end part of each electrode assembly along a second direction perpendicular to the first direction is provided with a tab; and a connection member configured to connect tabs of the electrode assemblies and an electrode terminal of the battery cell. The connection member includes a main body portion and a pin, the main body portion extends along the first direction, and includes a first surface and a second surface perpendicular to the second direction, the main body portion is provided with a plurality of through grooves passing through the first surface and the second surface, and the plurality of through grooves are respectively configured to accommodate the tabs of the plurality of electrode assemblies.

Abstract: A phase-change electrolyte separator layer can include a non-reactive scaffold that has open spaces. A lithium liquid may be used that transitions into a lithium gel, the lithium liquid can include a mixture of a polymer additive, a cross-linker additive, a lithium salt; and a solvent. The lithium liquid with the polymer additive and the cross-linker additive can be filled into the open spaces within the non-reactive scaffold. The lithium liquid can then be converted into a lithium gel within the non-reactive scaffold following an application of heat while the lithium liquid is within the open spaces within the non-reactive scaffold.

Abstract: A system for stacking fuel cells for a fuel cell stack includes a component part storage region to store the fuel cells, a finished product storage region to store a completed fuel cell stack transferred by an automated guided vehicle, and a plurality of stacking regions disposed between the component part storage region and the finished product storage region, where one side of each stacking region corresponding to the finished product storage region is formed as an entry and exit for the automated guided vehicle for the fuel cell stack, a stacking unit is disposed at each of remaining sides of the stacking region, and the stacking region is supplied with the fuel cells from the component part storage region by the automated guided vehicle to sequentially stack the fuel cells to manufacture the fuel cell stack.

Abstract: Disclosed is a method for preparing a novel granulated spherical graphite and, specifically, to a method for preparing a novel granulated spherical graphite, the method allowing a composite spherical graphite to be prepared from natural graphite discarded in a mechanical process, during the preparation of a spherical graphite having a diameter of tens of micrometers and mechanically obtained from scale-like natural graphite.

Abstract: Articles and methods involving protective membranes for electrochemical cells are generally provided. In some embodiments, a composite protective layer comprising particles and a polymeric binder may be disposed on an electroactive material. The particles may be reactive with lithium, may capable of intercalating lithium, and/or may comprise intercalated lithium. In some embodiments, the electroactive material may be in the form of a first electroactive layer, and a second electroactive layer may be disposed on the composite protective layer. Certain embodiments relate to activating a composite protective layer by intercalating lithium into particles within the layer and/or by reacting the particles with lithium metal.

Abstract: A zinc-air battery includes an air cathode, a zinc anode, an electrolyte, and a housing, wherein the zinc-air battery includes a carbon dioxide scrubbing agent. A packaging for a zinc-air battery, wherein the packing includes a chamber having a carbon dioxide scrubbing agent, and the chamber is configured to contain the zinc-air battery during storage.

Abstract: An ECU calculates a surface potential of a negative electrode active material relative to a lithium reference potential, according to a battery model for calculating lithium concentration distribution inside the negative electrode active material. The ECU calculates a voltage drop amount associated with charging of a battery, using a charging current to the battery and a reaction resistance, and calculates a negative electrode potential by subtracting the voltage drop amount from the surface potential. The ECU corrects the negative electrode potential, using an SOC of the battery, an average current in a charging period of the battery, and an integrated current in the charging period.

Abstract: A metal-ion deposition regulator to regulate the flux and deposition of metal ions in an electrochemical cell. The regulator containing two membranes made of a polymer and a plurality of two-dimensional porous nanosheets sandwiched between the two membranes. The regulator is capable of distributing flux of metal ions passing through the metal-ion deposition regulator and regulating the deposition of the metal ions onto the cathode or anode thereby suppressing dendrite growth in the electrochemical cell. An electrochemical cell containing an anode, a cathode, a liquid electrolyte, and a metal-ion deposition regulator. A method of making a metal-ion deposition regulator. The method includes fabricating two-dimensional porous nanosheets utilizing graphene oxide as an expendable template, and sandwiching the porous nanosheets between two membranes made of a polymer such that the nanosheets are in contact with the two membranes.

Abstract: Disclosed herein is an electrode drying method for drying a plurality of electrodes in the state in which the electrodes are stacked, the electrode drying method including interposing a hygroscopic film between adjacent ones of the electrodes and drying the electrodes in the state in which the hygroscopic film is interposed between the electrodes, wherein at least one of the surfaces of the hygroscopic film that faces the electrodes has an uneven structure, or an electrode drying method for drying an electrode sheet in the state in which the electrode sheet is wound, the electrode drying method including winding the electrode sheet with a hygroscopic film and drying the electrode sheet in the state in which the hygroscopic film is interposed between overlapping portions of the electrode sheet, wherein at least one of the surfaces of the hygroscopic film that is disposed opposite the electrode sheet has an uneven structure.

Abstract: A winding shaft structure includes a winding shaft holder rotatable around an axial direction of the winding shaft structure, a first shaft group connected to one side of the winding shaft holder in the axial direction and configured to rotate together with the winding shaft holder, a second shaft group disposed on a side of the first shaft group in a radial direction of the winding shaft structure, a connecting member connected between the first shaft group and the second shaft group such that the second shaft group is movable with respect to the first shaft group in the radial direction via the connecting member, and a piezoelectric adjustment member disposed between the first shaft group and the second shaft group and deformable in the radial direction to adjust a distance between the first shaft group and the second shaft group.

Abstract: The present disclosure provides an external cladding film, an energy storage device and electrical equipment. The energy storage device includes an external cladding film and a housing. The external cladding film includes two side film sections each having a first cut groove and a second cut groove. The first cut groove and the second cut groove both penetrate through the side film section. A bottom surface of the first cut groove and a bottom surface of the second cut groove are both spaced from inner edges of the side film sections. Each side film section has a first oblique crease and a second oblique crease. A first free end of the first oblique crease intersects with a side surface of the first cut groove. A distance between the first free end and the bottom surface of the first cut groove is greater than 0.

Abstract: The present invention relates to a positive electrode active material having improved capacity characteristic and life cycle characteristic, and a method of preparing the same, and specifically, to a positive electrode active material for a lithium secondary battery, wherein the positive electrode active material comprises a compound represented by Formula 1 above and allowing reversible intercalation/deintercalation of lithium, and from a crystal structure analysis of the positive electrode active material by a Rietveld method in which space group R-3m is used in a crystal structure model on the basis of an X-ray diffraction analysis, the thickness of MO slab is 2.1275 ? or less, the thickness of inter slab is 2.59 ? or greater, and the cation mixing ratio between Li and Ni is 0.5% or less, and a method of preparing the same.

Abstract: The present invention relates to a battery pack including a frame profile with integral coolant circuit elements. The battery pack includes one or more battery modules, each comprising a plurality of secondary battery cells, a framework comprising a first frame profile and a second frame profile opposite to the first frame profile, and a liquid cooling circuit comprising one or more cooling plates being in thermal contact with the battery module.

Abstract: A metal support for an electrochemical element where the metal support includes a plate face, has a plate shape as a whole, and has a warping degree of 1.5×10?2 or less determined by calculating a least square value through the least squares method using at least three points in the plate face of the metal support, calculating a first difference between the least square value and a positive-side maximum displacement value on a positive side with respect to the least square value and a second difference between the least square value and a negative-side maximum displacement value on a negative side that is opposite to the positive side with respect to the least square value, and dividing the sum of the first difference and the second difference by a maximum length of the plate face of the metal support that passes through a center of gravity.

Abstract: Provided are multilayered flexible battery interconnects for interconnecting batteries in battery packs and methods of fabricating thereof. A multilayered flexible battery interconnect comprises insulating layers and two conductive layers, stacked together and positioned between the insulating layers. One conductive layer is thicker than the other. The thinner conductive layer comprises flexible tabs for connecting to batteries and, in some examples, comprises voltage sense traces. The smaller thickness of these flexible tabs ensures welding quality and allows using less energy during welding. The battery cell contacts, to which these flexible tabs are welded, can be significantly thicker. Furthermore, the smaller thickness enables fusible link integration into flexible tabs. At the same time, the two conductive layers collectively conduct current within the interconnect, with the thicker layer enhancing the overall current-carrying capacity.