Abstract: A method for connecting individual lithium ion cells into a battery suited for powering an electric or hybrid vehicle is disclosed. The cell current collectors are electron beam welded to one another and to a connector tab in an substantially oxygen-free atmosphere. The cell current collectors and the connector tab are temporarily secured with a clamp, one portion of which has an opening. The electron beam size may be controlled, by magnetic coils and by the extent of electron scattering by the gas atmosphere, to minimally fill the clamp opening to minimize any irradiation of the clamp. The beam or the workpieces may be displaced, if required, fuse the entire opening area. A similar procedure may be followed to weld a plurality of connector tabs to a busbar.

Abstract: A fuel cell apparatus includes a fuel cell stack in which an end plate is arranged at both ends of a cell stacked body, and a conduit that is bolted to the fuel cell stack and that supplies and discharges fluid to and from the fuel cell stack. An end plate internal manifold that extends at an angle inclined with respect to a direction in which a stacked body internal manifold extends is formed inside the end plate. A conduit internal flow path is formed inside the conduit. A direction in which a portion that includes an end plate-connecting portion of the conduit internal flow path extends is inclined in the same direction as the direction in which the end plate internal manifold is inclined, with respect to a direction perpendicular to a surface of the end plate.

Abstract: A battery pack including a frame integrated with a reinforcement member and a supporting member, thereby realizing a compact and lightweight dimension. The battery pack includes a plurality of battery cells stacked on top of each other, a frame including a supporting member covering the plurality of battery cells and a reinforcement member formed inside the supporting member, and an end plate disposed at the exterior of the plurality of battery cells and coupled to the frame.

Abstract: A battery module according to the principles of the present disclosure includes a plurality of battery cells, a pair of sideplates, and a pair of endplates. The sideplates are disposed on opposite sides of the plurality of battery cells and the endplates are disposed at opposite ends of the battery module. The sideplates include a first mating portion and the endplates include a second mating portion that engages the first mating portion to provide an interference fit. The interference fit joins the sideplates and the endplates together and bands the plurality of cells together between the sideplates and the endplates.

Abstract: The gravimetric and volumetric efficiency of lithium ion batteries may be increased if high capacity materials like tin and silicon may be employed as the lithium-accepting host in the negative electrode of the battery. But both tin and silicon, when fully charged with lithium, undergo expansions of up to 300% and generate appreciable internal stresses which have potential to spall off material from the electrode on each discharge-charge cycle, resulting in a progressive reduction in battery capacity, also known as battery fade. A method of reinforcing such electrode materials by incorporating within them fiber reinforcements or shaped, elongated reinforcements fabricated of shape memory alloy is described. Electrode materials incorporating such reinforcements are less prone to damage under applied stress and so less prone to battery fade.

Abstract: In a rectangular battery, a lead 9L connected to an electrode plate having a first polarity is connected to a battery case 1 which is an external terminal having the first polarity. A lead 11L connected to an electrode plate having a second polarity is connected to an external terminal 25 having the second polarity, through a connection plate 29. A distance between the battery case 1 and the connection plate 29 at at least one end of the battery case 1 in a long-side direction is equal to or less than the half of the width of the battery case 1 in a short-side direction thereof.

Abstract: The invention relates to materials for use as electrodes in an alkali-ion secondary (rechargeable) battery, particularly a lithium-ion battery. The invention provides transition-metal compounds having the ordered-olivine or the rhombohedral NASICON structure and the polyanion (PO4)3? as at least one constituent for use as electrode material for alkali-ion rechargeable batteries.

Abstract: An electrode assembly includes a positive electrode including a positive electrode current collector and a positive electrode active material layer on the positive electrode current collector, a negative electrode including a negative electrode current collector and a negative electrode active material layer on the negative electrode current collector, and a separator between the positive and negative electrodes, the separator including a heat-resistive unit and a lubrication unit, the heat-resistive unit having a heat-resistive material, and the lubrication unit being at an inner front end of the spirally winding separator and having a friction coefficient that is lower than that of the heat-resistive unit.

Abstract: A control strategy for controlling how much current can be provided by a fuel cell stack to a system load during a power up-transient. When a power up-transient command is given, the control strategy limits the amount of power or current that the stack can provide to the load based on how fast an anode exhaust gas recirculation pump can meet the exhaust gas recirculation demand so that the ratio between the recirculated anode exhaust gas and the fresh hydrogen remains substantially constant. Thus, during the power up-transient, the relative humidity provided by the combination of the fresh hydrogen and the anode exhaust gas maintains the membranes in the stack at the desired humidity level. Any difference between the commanded stack power and the limited stack power during the power up-transient can be provided by a system battery.

Abstract: This invention relates to a cathode for a lithium-air battery, a method of manufacturing the same and a lithium-air battery including the same. The method of manufacturing the cathode for a lithium-air battery includes 1) stirring a cobalt salt, triethanolamine and distilled water, thus preparing a cobalt solution, 2) electroplating the cobalt solution on a porous support, thus preparing a cobalt plated porous support, 3) reacting the cobalt plated porous support with a mixture solution including oxalic acid, water and ethanol, thus forming cobalt oxalate on the porous support, and 4) thermally treating the cobalt oxalate.

Abstract: The electrode for a fuel cell of the invention includes: an electrode substrate; and a catalyst layer having a filler layer formed on the surface of the electrode substrate and a catalyst coating the filler layer.

Abstract: A connection plate for battery terminals capable of inhibiting a first member and a second member from being detached from each other is provided. This bus bar 2 (connection plate for battery terminals) includes a first member (3) including a first hole (30) and an embedding hole (31), made of first metal and a second member (4) having a second hole (42), including a base (40) made of second metal, embedded in the embedding hole of the first member, while an intermetallic compound layer (5) containing at least one of the first metal and the second metal is formed on an interface between the embedding hole of the first member and the second member.

Abstract: A nonaqueous electrolyte secondary battery is prevented from decreasing the remaining capacity and returned capacity at the time of continuous charge at high voltages and high temperatures. The battery has positive and negative electrodes, and a nonaqueous electrolytic solution containing ethylene carbonate and fluoroethylene carbonate as a solvent. The positive electrode contains a positive-electrode active material with the fine particles of a rare earth element compound deposited on its surface in a dispersed state.

Abstract: Disclosed herein is a secondary battery including two or more stacking-folding type cells (‘unit cells’) manufactured by winding small-sized electrode assemblies (‘bicells’) constructed in a stacking type structure in which electrodes having the same polarity are located at opposite sides of each electrode assembly and small sized electrode assemblies (‘full cells’) constructed in a stacking type structure in which electrodes having different polarities are located at opposite sides of each electrode assembly using a long separator sheet, wherein the unit cells are mounted in a battery case, each unit cell has one or more electrode terminals protruding from each end of each unit cell, and the unit cells are mounted in a receiving part of the battery case such that the unit cells are arranged in a stacking arrangement structure or a plane arrangement structure while the electrode terminals of the unit cells are connected with each other.

Abstract: The present invention provides a process for producing a lithium sulfide-carbon composite, the process comprising placing a mixture of lithium sulfide and a carbon material having a specific surface area of 60 m2/g or more in an electrically-conductive mold in a non-oxidizing atmosphere, and applying a pulsed direct current to the mold while pressurizing the mixture in a non-oxidizing atmosphere, thereby subjecting the lithium sulfide and the carbon material to heating reaction; and a lithium sulfide-carbon composite obtained by this process, the composite having a carbon content of 15 to 70 weight %, and a tap density of 0.4 g/cm3 or more when the carbon content is 30 weight % or more, or a tap density of 0.5 g/cm3 or more when the carbon content is less than 30 weight %.

Abstract: Disclosed is a non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery comprising the same. The non-aqueous electrolyte including a lithium salt and an organic solvent may further include, as an additive, (a) halogenated alkyl silane and (b) any one of (b-1) succinic anhydride, (b-2) (meth)acrylic acid ester of pentaerythritol or dipentaerythritol, and (b-3) mixtures thereof. The non-aqueous electrolyte for a lithium secondary battery may improve the high-temperature storage performance and the cycling performance.

Abstract: A battery apparatus including a case, a battery cell, a battery-side terminal, and an engaging piece. The case has a width, a thickness, and a length. The battery cell is housed in an inside of the case. The battery-side terminal is disposed on a side surface at one end of the case in a length direction and electrically connected to the battery cell. The engaging piece is disposed at the one end of the case at which the battery-side terminal is positioned such that the engaging piece extends in a length direction a same distance as the case at the one end portion. The engaging piece is at an edge of the case in a width direction.

Abstract: The present invention relates to in situ formation of a single-layered electrochemical cell comprising a full tri-layer battery structure containing a discrete positive electrode, solid state electrolyte, and negative electrode from self-assembled nanocomposites. The single layered cell makes it possible to fabricate cells in three dimensions resulting in a very high energy density power source within very small and/or complex dimensions.

Abstract: A positive electrode active material with least part of a surface coated with a surface treatment layer composed of a phosphate compound. The phosphate compound contains at least one element selected from the group consisting of neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium.

Abstract: The disclosed embodiments provide a battery cell which includes a set of jelly rolls enclosed in a pouch. Each jelly roll includes layers which are wound together, including a cathode with an active coating, a separator, and an anode with an active coating. The battery cell also includes a first set of conductive tabs and a second set of conductive tabs. Each of the first set of conductive tabs is coupled to the cathode of one of the jelly rolls, and each of the second set of conductive tabs is coupled to the anode of one of the jelly rolls. At least one of the first set and one of the second set of conductive tabs extend through seals in the pouch to provide terminals for the battery cell.