Abstract: An electrolyte, a method for making the electrolyte, and a flow cell battery are provided. The electrolyte includes about 1.0 molar (M) to about 1.5 M iron ions and about 1.0 M to about 1.5 M vanadium ions.

Abstract: This cathode active material for a secondary battery using a non-aqueous electrolyte includes nickel-rich lithium transition-metal oxide, exhibits a hard X-ray photoelectron spectroscopy (HAXPES) peak of 1,560 to 1,565 eV in binding energy from an Al-rich layer, using a photon energy of 6 KeV, and with respect to the mean particle diameter r of the lithium transition-metal oxide particle, the Al concentration is approximately constant within 0.35 r of the center.

Abstract: A battery pack has bus bars at one end, freeing the other end of the battery pack for cooling or other arrangements. A plurality of battery cells has first terminals of the battery cells at first ends of the battery cells. Portions of second terminals of the battery cells are at the first ends of the battery cells. The first ends of the battery cells are in a coplanar arrangement. A plurality of bus bars is assembled proximate to the first ends of the battery cells. The bus bars are coupled to the first terminals and the second terminals of the battery cells at the first ends of the battery cells to place the battery cells in one of a series connection, a parallel connection or a series and parallel connection.

Abstract: A battery cell including an electrode assembly contained within a housing. The electrode assembly shrinks and/or swells depending on a charge/discharge cycle of the cell. A swelling compensation member configured to shrink upon swelling of the electrode assembly, and expand upon on shrinking of the electrode assembly is in continuous contact with the electrode assembly and an innermost surface of the housing. A first portion of the innermost surface of the housing is in contact with the swelling compensation member, and a second portion is free from contact with the swelling compensation member. The battery cell includes a cooling member in thermal contact with the outermost surface of the housing. Part of the outermost surface of the housing in contact with the cooling member corresponds to a part of the innermost surface of the housing which is free from contact with the swelling compensation member.

Abstract: The present invention provides an apparatus for homogenising one or more regions within a plurality of electrochemical cells, the apparatus comprising a plurality of magnetic flux generators, each configured to generate a respective changing magnetic field through at least one of the plurality of electrochemical cells, wherein the plurality of magnetic flux generators and the plurality of electrochemical cells are arranged in an alternating manner.

Abstract: A fuel cell system includes a plurality of stacked bipolar plate assemblies. Each of the plurality of stacked bipolar plate assemblies includes a first subgasket including a first peripheral edge. The first subgasket supports a first membrane electrode assembly (MEA). A second subgasket including a second peripheral edge. The second subgasket supports a second MEA. A bipolar plate is disposed between the first subgasket and the second subgasket. The bipolar plate has a first side defining a first plurality of passages receptive of a cathode fluid, a second side defining a second plurality of passages receptive of an anode fluid, and a plurality of coolant passages defined between the first subgasket and the second subgasket. A seal bead extends around the bipolar plate. The seal bead seals against the first subgasket and the second subgasket. An energy attenuating bead extends about the bipolar plate spaced from the seal bead.

Abstract: A sulfide-based solid electrolyte particle having a crystal phase of a cubic argyrodite-type crystal structure composed of Li, P, S and a halogen (Ha), wherein good contact between the sulfide-based solid electrolyte particles and positive or negative electrode active material particles is secured and improvements in the rate characteristic and the cycle characteristic are attained. The ratio (ZHa2/ZHa1) of an element ratio ZHa2 of the halogen (Ha) at the position of 5 nm in depth from the particle surface to an element ratio ZHa1 of the halogen (Ha) at the position of 100 nm in depth from the particle surface is 0.5 or lower and the ratio (ZO2/ZA2) of an element ratio ZO2 of oxygen to the total ZA2 of element ratios of P, S, O, and the halogen (Ha) at the position of 5 nm in depth from the particle surface is 0.5 or higher, as measured by XPS.

Abstract: An electrode post for a battery cover, includes an upper substate and a lower substrate. An upper connection surface for contacting with an external component is arranged on one side of the upper substrate, an extension board is arranged on the other side of the upper substrate, a groove for receiving a sealing element and a fastener is formed in a side wall of the extension board; and the lower substrate is arranged at a tail end of the extension board, a lower connection surface for contacting with an inner component of a battery is arranged on a side, opposite to the extension board, of the lower substrate. The connection strength of the electrode post and the battery cover is increased and the structural strength and sealing performance of a final battery product is increased, thus improving the reliability and prolonging the service life of the final battery product.

Abstract: A battery module, a device, and a failure handling method for a failed battery cell. The battery module includes: a battery cell arrangement structure, including a plurality of battery cells arranged along a length direction, where the battery cells include electrode terminals, and the battery cells include a failed battery cell; a box body, having an accommodation cavity in which the battery cell arrangement structure is located; a mounting beam, located in the accommodation cavity and at an end of the battery cell arrangement structure along the width direction; a pressing plate; and a conductive component, connected to a positive electrode terminal and a negative electrode terminal of the failed battery cell. The conductive component is easily connected to electrode terminals of a failed battery cell, so that a maintenance process can be simplified and maintenance costs can be reduced.

Abstract: Provided is a novel positive electrode active material for a sodium-ion secondary battery having a high voltage and a high capacity. The positive electrode active material for a sodium-ion secondary battery is made of crystals represented by a general formula Nax(Co1-aMa)yP2Oz (where M represents at least one transition metal element selected from the group consisting of Fe, Cr, Ni, and Mn, 0.6?x?4, 0.3?y?2.7, 0?a?0.9, and 6?z<7.5).

Abstract: A battery module which uses a flexible printed circuit board (FPCB) to provide a transmission path of information on the voltage or temperature thereof sensed by a bus bar. The battery module may have a smaller size in a height direction compared to a case of using a rigid printed circuit board (RPCB) or a wire instead of the FPCB to provide the transmission path of the information on the voltage or temperature, and may thus have improved energy efficiency per volume.

Abstract: The present application discloses a negative electrode, a secondary battery and a device comprising the same. The negative electrode includes: a current collector; a first active material layer close to the current collector, the first active material layer including a first active material; and a second active material layer disposed on a surface of the first active material layer away from the current collector, the second active material layer including a second active material; wherein the first active material and the second active material are independently oval-like particles with through holes and/or blind holes, and the first active material has an average pore size greater than that of the second active material.

Abstract: A battery pack and a method of manufacturing the battery pack including a battery cell including a terrace portion from which an electrode is drawn out; and a protection module package electrically connected to the battery cell, wherein the protection module package includes an insulating frame including a base portion on the terrace portion of the battery cell, and a first partition wall on the base portion and facing the battery cell, a circuit portion on the insulating frame, and an insulating block covering at least a portion of the circuit portion.

Abstract: This positive electrode active material for non-aqueous electrolyte secondary batteries comprises: lithium transition metal oxide particles; a metal compound which contains a metal element M and adheres to the surfaces of the lithium transition metal oxide particles; and a lithium metal compound which contains lithium (Li) and the metal element M and adheres to the surfaces of the lithium transition metal oxide particles. In this connection, the metal element M is composed of at least one substance that is selected from among aluminum (Al), titanium (Ti), manganese (Mn), gallium (Ga), molybdenum (Mo), tin (Sn), tungsten (W) and bismuth (Bi).

Abstract: A battery pack including a frame including a thermistor seat and a thermistor accommodated in the thermistor seat; at least one battery cell on the frame and connected to the thermistor; and a protective circuit module, the protection circuit module including a projection between a portion of the thermistor and the at least one battery cell.

Abstract: Provided is a lithium complex oxide sintered plate for use in a positive electrode of a lithium secondary battery. The lithium complex oxide sintered plate has a structure in which a plurality of primary grains having a layered rock-salt structure are bonded, and has a porosity of 3 to 40%, a mean pore diameter of 15 ?m or less, an open porosity of 70% or more, and a thickness of 15 to 200 ?m. The plurality of primary grains has a primary grain diameter, i.e., a mean diameter of the primary grains, of 20 ?m or less and a mean tilt angle of more than 0° to 30° or less. The mean tilt angle is a mean value of the angles defined by the (003) planes of the primary grains and the plate face of the lithium complex oxide sintered plate.

Abstract: Disclosed are a cathode active material for a lithium secondary battery and a lithium secondary battery including the same. The cathode active material includes a secondary particle in which a plurality of primary particles are agglomerated, wherein the secondary particle has a predetermined arrangement structure in which (003) surface of primary particles are aligned to be in a vertical direction with respect to a tangent line at a point (P) at which the (003) surface of the primary particles meet a surface of the secondary particle.

Abstract: An example mobile computing device includes: a battery module including a battery cell having a conductive casing; a coupler; and a controller coupled to the coupler, the controller configured to communicate a broadcast signal to the coupler, the coupler radiating the broadcast signal to the conductive casing of the battery module and causing the conductive casing of the battery module to transmit the broadcast signal from the mobile device.

Abstract: A battery pack for a vehicle electrical system includes a casing for receiving one or more battery modules. The battery modules are insertable into a casing of the battery pack. Additionally, the battery modules may include cooling plate to cool the battery module and provide coolant to another battery module in response to a triggering event. Additionally, the battery modules may include a top cover with a frangible insulating material to further thermally insulate one battery module from another battery module and allow gasses and active material to escape the battery module in response to a triggering event. The battery pack may additionally be configured with vents for venting the gases and active material, such as those generated by a battery module in a thermal runaway event. Additionally, the battery modules may include a heat shield to direct vented gases and active material away from a cabin of a vehicle.

Abstract: Provided is a composition for an electrochemical device functional layer capable of providing an electrochemical device having low volume expansion. The composition for an electrochemical device functional layer contains a solvent and a polymer including an oxide structure-containing monomer unit. The oxide structure-containing monomer unit has a structure indicated by the following formula (I) (in formula (I), R1 represents an optionally substituted alkylene group and n is a positive integer), and the polymer has a number-average molecular weight of not less than 5,000 and not more than 15,000.