Abstract: A battery module includes a plurality of cells and a plurality of holders. The plurality of cells are parallelly arranged in a row at intervals. The plurality of cells have explosion-proof valves which are provided therein and which are capable of opening upon an increase in an inner pressure in the plurality of cells. The plurality of holders are arranged among the cells so as to hold the cells. The holders have holder pieces which are integrally formed therein and which cover at least part of the explosion-valves so as to prevent emissions from the explosion-proof valves from being released in all directions.

Abstract: A secondary battery comprises: an electrode assembly comprising a first plate, a second plate, and a separator disposed between the first and second plates, wherein the first plate comprises an active portion and a non-active portion extending from the active portion, wherein the second plate comprises an active portion and a non-active portion extending from the active portion; a ceramic material disposed on the non-active portion of the first plate; and a battery case housing the electrode assembly.

Abstract: In a fuel cell system, a controller is programmed to control a first gas supply mechanism to deliver a first gas containing a fuel gas to a cathode in a pre-stop process performed at a system stop of the fuel cell system. The controller is programmed to control the first gas supply mechanism to stop the delivery of the first gas in a first state where a partial pressure difference between an anode and the cathode with respect to at least the fuel gas of remaining gases in the anode and in the cathode is reduced to or below a preset reference value.

Abstract: A system for delivering an input fuel stream to a fuel cell stack to generate electrical current and to discharge an unused fuel stream is provided. A supply produces a supply fuel stream. An ejector combines a purged fuel stream and the supply fuel stream and controls the flow of the input fuel stream to the fuel cell stack. A purging arrangement receives the unused fuel stream which includes impurities and purges the impurities from the unused fuel stream to generate the purged fuel stream. A bypass valve is capable of delivering the purged fuel stream to the ejector. A blower is capable of delivering the purged fuel stream to the ejector. A controller controls one of the bypass valve and the blower for delivering the purged fuel stream to the ejector based on the amount of electrical current generated by the fuel cell stack.

Abstract: A lithium secondary battery is equipped with a non-recovering safety valve comprising a valve, which ruptures when the valve opens, and a valve surrounding part that surrounds the valve. The safety valve is further disposed in the valve surrounding part, and has an anti-scattering means that prevents shards, which are produced by the valve rupturing when the valve opens, from scattering outside the battery. The anti-scattering means constitutes an anti-fragmentation part of a form that prevents shards from fragmenting from the valve surrounding part.

Abstract: A battery including an electrode assembly having a positive electrode, a negative electrode and a separator interposed between the electrodes, a container housing the electrode assembly, a tab attached to a first side of an uncoated region of the electrode assembly, the tab having a terminal, a first insulator interposed between the tab and a first inner surface of the container, and a cap assembly closing the container and having the terminal passing therethrough.

Abstract: An electrode layered product for a cell includes a first electrode plate having a shape of a strip, a first separator having a shape of a strip, a second separator having a shape of a strip, a second electrode plate having a pectinate, tooth shape, and a third electrode plate having a pectinate, tooth shape. The first separator is stacked on one surface of the first plate. The second separator is stacked on the other surface of the first plate. The second plate is stacked on an opposite side of the first separator from the first plate. The second plate includes tooth sections and a joining section. The third plate is stacked on an opposite side of the second separator from the first plate. The third plate includes tooth sections and a joining section. The first and second separators and the first, second and third plates are bent in a zigzag manner.

Abstract: A bipolar plate for a fuel cell is provided that includes a pair of unipolar plates having a separator plate disposed therebetween. One of the unipolar plates is produced from a porous material to minimize cathode transport resistance at high current density. A fuel cell stack including a fuel cell and the bipolar plate is also provided.

Abstract: The electrode production method provided by the present invention includes a step of mixing microbubbles 52 into a binder solution 50 containing a binder, a step of forming a binder solution layer 56 by imparting the bubble-containing binder solution 50 to a current collector 10, a step of depositing the binder solution layer 56 and a paste layer 36 on the current collector 10 by imparting an active material layer-forming paste containing an active material 32 over the binder solution layer 56, and a step of obtaining an electrode in which a binder layer and an active material layer are formed on the current collector 10 by drying both the deposited binder solution layer 56 and the paste layer 36.

Abstract: An electricity storage device has an electricity storage unit and a case that contains the electricity storage unit and a coolant for cooling the electricity storage unit. The case includes guide portions on an inner wall surface above the electricity storage unit, each of the guide portions having an oblique portion for, when gas is produced by the electricity storage unit, leading the gas to a predetermined position; and contact portions each of which protrudes in a direction of the electricity storage unit with respect to the oblique portions of the guide portions and is brought into contact with the coolant.

Abstract: Disclosed is a separator for a non-aqueous electrolyte secondary battery, the separator including a biaxially-oriented polyolefin porous film including extended-chain crystals and folded-chain crystals, wherein the extended-chain crystals and the folded-chain crystals form a shish-kebab structure. The average distance between the extended-chain crystals adjacent to each other is 1.5 ?m or more and less than 11 ?m, and the average distance between the folded-chain crystals adjacent to each other is 0.3 ?m or more and less than 0.9 ?m. A heat resistant porous film may be laminated on the polyolefin porous film. The heat resistant porous film includes a resin having heat resistance or a melting point higher than a melting point of the polyolefin porous film.

Abstract: Provide an electrochemical device offering a large capacity per current collector and a low internal resistance, which is also easy to assemble. Provided is a laminated sheet body 16S by inserting a negative-electrode continuous body 11BW between an adjacent pair of first current collectors 12a, 12a with their first current collector main units 12a1 connected together, and also between an adjacent pair of first current collectors 12a, 12a with their first tabs 12a2 connected together, with respect to a plurality of positive electrodes 11A arranged in the width direction apart from each other, after which the negative-electrode continuous body of the laminated sheet body is cut to the unit width dimension of an element to obtain a plurality of laminated bodies 16.

Abstract: An alignment system and method for assembling a fuel cell stack. Components of the fuel cell stack have internal alignment features and are aligned to a predetermined orientation during assembly. The system and method allow fuel cell stacks to be assembled within high tolerance levels while improving access to each component during assembly. Additionally, the system and method can provide additional rigidity to a fuel cell stack.

Abstract: An electric storage apparatus includes a plurality of electric storage components, and a holder holding each of the electric storage components at both end portions of each of the electric storage components in a longitudinal direction. The holder includes a plurality of guide portions provided within an orthogonal plane orthogonal to the longitudinal direction of the electric storage component and configured to move both end portions of each of the electric storage components toward a predetermined holding position, and an opening portion formed at one end of each of the guide portions and configured to insert the end portion of the electric storage component into the guide portion.

Abstract: A positive electrode active material includes: a secondary particle obtained upon aggregation of a primary particle that is a lithium complex oxide particle in which at least nickel (Ni) and cobalt (Co) are solid-solved as transition metals, wherein an average composition of the whole of the secondary particle is represented by the following formula (1): LixCoyNizM1-y-zOb-aXa ??Formula (1) wherein an existent amount of cobalt (Co) becomes large from a center of the primary particle toward the surface thereof; and an existent amount of cobalt (Co) in the primary particle existing in the vicinity of the surface of the secondary particle is larger than an existent amount of cobalt (Co) in the primary particle existing in the vicinity of the center of the secondary particle.

Abstract: In one aspect, a rechargeable lithium battery including an electrolyte for the rechargeable lithium battery is provided. The electrolyte for the rechargeable lithium battery includes: a non-aqueous organic solvent; a lithium salt; and a compound represented by Chemical Formula 1.

Abstract: A battery-dedicated electrode foil (32) includes an aluminum electrode foil (33) in which metal aluminum is exposed, and corrosion-resistant layers (34A, 34B) that are formed on surfaces (33a, 33b) of the aluminum electrode foil, and that are in direct contact with the metal aluminum that forms the aluminum electrode foil, and that is made of tungsten carbide.

Abstract: A fuel cell is manufactured using a polymer electrolyte membrane (1). A catalyst layer (12) is formed at fixed intervals on the surface of the strip-form polymer electrolyte membrane (1) in the lengthwise direction thereof, and conveyance holes (10) are formed in series at fixed intervals on the two side portions thereof. By rotating a conveyance roller (32) comprising on its outer periphery projections which engage with the holes (10), the polymer electrolyte membrane (1) is fed from a reel (9). A GDL (6) and a separator (7) are adhered to the fed polymer electrolyte membrane (1) at a predetermined processing timing based on the rotation speed of the conveyance roller (32), and thus the fuel cell is manufactured efficiently while the GDL (6) and separator (7) are laminated onto the catalyst layer (12) accurately.

Abstract: To provide an ionic electrolyte membrane structure that enables contact between the air pole and the fuel pole in which structure an edge face of the interface between an ion conducting layer and an ion non-conducting layer stands bare on a plane, an ionic electrolyte membrane structure which transmits ions only is made up of i) a substrate having a plurality of pores which have been made through the substrate in the thickness direction thereof and ii) a plurality of multi-layer membranes each comprising an ion conducting layer formed of an ion conductive material and an ion non-conducting layer formed of an ion non-conductive material which have alternately been formed in laminae a plurality of times on each inner wall surface of the pores of the substrate in such a way that the multi-layer membranes fill up the pores completely; the ions only being transmitted in the through direction by way of the multi-layer membranes provided on the inner wall surfaces of the pores.

Abstract: A battery unit with improved safety measures, a lithium polymer battery using the battery unit, and a method for manufacturing the lithium polymer battery are provided.