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.

Abstract: Fuel cell stacks may include a plurality of fuel cells including a membrane-electrode assembly that includes an anode electrode and a cathode electrode, gas diffusion layers respectively on opposing sides of the membrane-electrode assembly, a first separating plate having a first surface facing the anode electrode so as to be in contact with the gas diffusion layer and a second surface opposite to the first surface, and a second separating plate having a first surface facing the cathode electrode so as to be in contact with the gas diffusion layer and a second surface opposite to the first surface. At least one of the second surface of the first separating plate and the second surface of the second separating plate may include one or more protrusions protruding therefrom outwardly.

Abstract: A fuel cell apparatus includes a fuel cell module including a housing and a fuel cell housed in the housing, the fuel cell generating electric power with use of a fuel gas and an oxygen-containing gas; and a heat exchanger which carries out heat exchange between a medium and exhaust gas from the fuel cell module, the heat exchanger being arranged laterally to the housing.

Abstract: Electrolytes and electrolyte additives for energy storage devices including an anhydride compound are provided. The energy storage device includes a first electrode and a second electrode, where at least one of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, an electrolyte, and at least one electrolyte additive which is an anhydride compound.

Abstract: A carrier includes a base assembly movably coupled to a transfer rail, a seating plate disposed above the base assembly and having a battery cell seated on an upper surface thereof, a pressurizing and fixing portion for fixing the battery cell to the seating plate by pressurizing the battery cell, and an elastic member for pressurizing the pressurizing and fixing portion toward the seating plate side, wherein the pressurizing and fixing portion is coupled to the base assembly to move in a first direction, which is a horizontal direction, and a second direction, which is a vertical direction.

Abstract: A traction battery assembly according to an exemplary aspect of the present disclosure includes, among other things, a thermal exchange plate having a plurality of coolant channels distributed within the thermal exchange plate according to a first pattern, and a thermal interface material disposed on a surface of the thermal exchange plate according to a second pattern. The first pattern mimics the second pattern.

Abstract: A fuel cell system includes at least one spark igniter containing an insulated cable where at least a first end of the insulated cable is positioned within a reaction zone of the fuel cell system. A power supply is configured to provide a direct current (DC) voltage to the at least one spark igniter such that a spark is generated at the first end of the insulated cable.

Abstract: A battery module includes a module housing having a lower housing, a pair of side housings, front and rear housings, and an upper housing, for respectively covering a lower portion, both side portions, front and rear portions, and an upper portion of a cell stack. The lower housing includes a base plate configured to cover an entire lower surface of the cell stack and having a hole region forming a channel in at least one side of the base plate along a longitudinal direction; and a plurality of spacers disposed at predetermined intervals along the base plate and configured to support the cell stack apart from a surface of the base plate to form an empty space between the cell stack and the base plate. The hole region communicates with the empty space so that a cooling medium can be supplied to the empty space.

Abstract: A power supply system includes a plurality of batteries, a cooling portion through which a refrigerant for cooling the plurality of the batteries flows, a housing that has a bottom plate, a top plate, and side walls, the housing accommodating the plurality of the batteries and the cooling portion, and a compressor configured to pump the refrigerant to the cooling portion. In the housing, a strength member that extends in a direction in which the side walls face each other and reinforces the housing is mounted on the bottom plate or the top plate. The compressor is disposed in a position in which the compressor and the strength member are overlapped in the upright direction of the side walls.

Abstract: A battery pack includes a battery module in which a plurality of battery cells are stacked, a battery case accommodating the battery module, and a battery cooling mechanism configured to cool the battery module. The battery cooling mechanism includes an air guide duct disposed in a first direction orthogonal to a stacking direction of the plurality of battery cells with respect to the battery module, and a cooling fan disposed on a side opposite to the air guide duct with the battery module interposed therebetween in the first direction. An air intake port of the cooling fan is open on a side opposite to the battery module in the first direction.

Abstract: Systems and methods for a battery pack are disclosed. A battery pack tab cooling system is disclosed that includes a pouch cell comprising a first tab and a second tab. The battery pack tab cooling system also includes an enclosure configured to contain a cooling material. The first tab and the second tab extend from the pouch cell into the enclosure and are in contact with the cooling material. A method of manufacturing a battery pack that includes forming the battery pack, the battery pack comprising and cooling the at least one of the first tab and the second tab to cool the pouch cell.

Abstract: A power storage device includes: a plurality of bipolar electrodes being stacked, each of the plurality of bipolar electrodes including a collector having a first surface and a second surface opposite to the first surface, a positive electrode layer provided on the first surface, and a negative electrode layer provided on the second surface; a first resin member provided on at least one surface of the first surface and the second surface in at least a portion of an outer peripheral portion of the collector; and a second resin member provided on the first resin member and supporting the outer peripheral portion of the collector via the first resin member. The respective first resin members for the bipolar electrodes adjacent to each other in a stacking direction of the plurality of bipolar electrodes are connected to each other by a welded portion.

Abstract: A sealed battery includes a case, an internal terminal, an external terminal, and an insulating holder. The internal terminal of the sealed battery includes a current collector connected to the electrode body, a shaft portion exposed outside the case, and a riveted portion that is provided on an end of the shaft portion outside of the case and is pressure-deformed so as to extend along an upper surface of the external terminal. The insulating holder includes a heat resistant portion formed of an insulating material having higher heat resistance than other regions of the insulating holder and the heat resistant portion is disposed in contact with the external terminal at least below a boundary between the riveted portion and the external terminal.

Abstract: This application relates to an end cover assembly, a battery cell, a degassing method, a battery, and an electric apparatus. The end cover assembly includes: an end cover plate provided with a degassing hole, where the degassing hole penetrates through the end cover plate; and a degassing apparatus mounted in the degassing hole, where the degassing apparatus includes a columnar portion, a first limiting portion, a second limiting portion, a first elastic member, and a second elastic member. The columnar portion penetrates through the degassing hole. The first limiting portion and the second limiting portion are respectively located on an outer side and an inner side of the end cover plate. The first elastic member is located between the first limiting portion and the end cover plate. The second elastic member is located between the second limiting portion and the end cover plate.

Abstract: A battery monitoring device according to an embodiment monitors a state of a secondary battery block including parallel cell blocks connected in series each of which includes battery cells connected in parallel. A calculator calculates direct-current internal resistance values of the parallel cell blocks based on a differential current between first and second current values detected by a current detector, voltages of the parallel cell blocks corresponding to the first and second current values detected by a voltage detector. A determiner performs anomaly determination for the parallel cell blocks from the direct-current internal resistance values of the parallel cell blocks and a maximum value of the direct-current internal resistance values of the parallel cell blocks.

Abstract: A battery cell is configured such that a jelly-roll type electrode assembly is accommodated in a battery casing, and includes: the battery casing including upper, lower, and side surfaces, wherein the side surface of the battery casing includes an isolation wall providing a buffer space between the battery casing and the electrode assembly. The buffer space accommodates deformation of the electrode assembly when the electrode assembly is expanded, such that deformation of the side surface of the battery casing is prevented from occurring.

Abstract: Provided is an assembly method using an assembly tool used when a component is assembled to each of a plurality of connection ports to provided at an upper surface of a fuel-cell stack and communicating with a plurality of communication holes. The assembly tool includes a base portion positioned on the upper surface of the fuel-cell stack and a plurality of covering portions covering the plurality of connection ports. Each of the plurality of covering portions is, relative to the base portion, provided movably between a covering position for covering a corresponding one of the connection ports and a non-covering position accessible to a corresponding one of the connection ports.