Abstract: An electrochemical cell includes components that are welded from an external source after the components are assembled in a cell canister. The cell canister houses electrode tabs and a core insert. An end cap insert is disposed opposite the core insert. An external weld source, such as a laser beam, is applied to the end cap insert, such that the end cap insert, the electrode tabs, and the core insert are electrically coupled by a weld which extends from the end cap insert to the core insert.

Abstract: A battery module includes one or more cell assemblies with a plurality of unit cells, and a housing for mounting the cell assemblies therein and circulating a temperature control cooling medium through the cell assemblies. The cell assemblies are arranged in the longitudinal direction of the housing. A guidance unit is installed in a cooling medium passage formed in the longitudinal direction of the housing, and proceeds along the passage to guide cooling medium flow along the passage toward the cell assemblies.

Abstract: A lead acid storage battery composed of plates, the lead acid storage battery being obtained by packing an active material into a grid plate provided with a frame section having a quadrangular profile shape, and lateral grid strands and longitudinal grid strands that form a grid inside the frame section.

Abstract: The electrode for a fuel cell includes an electrode substrate and a catalyst layer disposed on the electrode substrate. The catalyst layer includes a first catalyst including a tungsten-containing compound and a second catalyst including a noble metal.

Abstract: A rechargeable lithium battery is provided. The battery includes an electrolyte including a lithium salt, a non-aqueous organic solvent including an ethylene carbonate-based compound and a pyrocarbonate-based additive; a negative electrode that includes a negative active material including a crystalline-based carbon core and an amorphous-based carbon shell surrounding the crystalline-based carbon core; and a positive electrode comprising a positive active material.

Abstract: A regenerative ion exchange fuel cell having an anode, a metal ion conductor coupled to the anode, an aqueous electrolyte solution positioned adjacent the metal ion conductor, a proton conductor mounted adjacent the aqueous electrolyte solution opposite the metal ion conductor, a cathode positioned adjacent the proton conductor opposite the aqueous electrolyte solution, and a cathode current collector associated with the cathode.

Abstract: An electric power tool includes a main body having a drive portion with a motor, an output portion for holding a tool, and a battery pack attachment portion, and a battery pack attached to the battery pack attachment portion by means of an attaching and detaching mechanism. The battery pack supplies electric power to the drive portion to operate the output portion. The attaching and detaching mechanism has a releasing unit for releasing the battery pack from the main body by operating plural types of release operation portions in their entirety.

Abstract: Disclosed is a secondary battery that enhances the safety and reliability thereof by preventing the danger of ignition and explosion when it is compressed or damaged due to an external impact. The secondary battery includes an electrode assembly including a first electrode plate, a second electrode plate, and a separator; a can accommodating the electrode assembly; and a cap assembly covering a top opening of the can. The cap assembly includes a cap plate having a first hole at a central portion thereof and electrically connected to a first electrode tab protruding from the first electrode plate, an insulation plate located under the cap plate, a terminal plate located under the insulation plate, an electrode terminal penetrating the cap plate, the insulation plate, and the terminal plate and electrically connected to a second electrode tab protruding from the second electrode plate, and a short-circuit plate located under the cap plate.

Abstract: There are provided a novel proton-conducting polymer membrane that shows good workability in a fuel cell assembling process and good proton conductivity and durability even under high-temperature, non-humidified conditions, a method for production thereof, and a fuel cell therewith. The proton-conducting polymer membrane includes: a polymer membrane containing a polybenzimidazole compound having a sulfonic acid group and/or a phosphonic acid group; and vinylphosphonic acid contained in the polymer membrane. The fuel cell uses the proton-conducting polymer membrane. The polybenzimidazole compound preferably includes a sulfonic and/or phosphonic acid group-containing component represented by Structural Formula (1): wherein n represents an integer of 1 to 4, R1 represents a tetravalent aromatic linking unit capable of forming an imidazole ring, R2 represents a bivalent aromatic linking unit, and Z represents a sulfonic acid group and/or a phosphonic acid group.

Abstract: A lithium ion battery particularly configured to be able to discharge to a very low voltage, e.g. zero volts, without causing permanent damage to the battery. More particularly, the battery is configured to define a Zero Volt Crossing Potential (ZCP) which is lower than a Damage Potential Threshold (DPT).

Abstract: A system and method for controlling an anode exhaust gas bleed valve in a fuel cell system that includes estimating the gas composition in the anode exhaust gas, using an inverse valve model to calculate a desired valve flow coefficient, and bleeding the anode exhaust gas at a flow rate that results in the desired valve flow coefficient. The method includes determining the partial pressure of nitrogen in the anode exhaust gas, calculating the partial pressure of water vapor and hydrogen in the anode exhaust gas, and calculating the gas mole fraction of the nitrogen, water vapor and hydrogen in the anode exhaust gas. The method also includes using the gas mole fraction of nitrogen, water vapor and hydrogen to determine the desired valve flow coefficient, and using the desired valve flow coefficient to determine when to open and close the bleed valve.

Abstract: A battery including an electrode assembly having electrode plates, a can defining a space receiving the electrode assembly, and a cap plate covering the space, wherein the cap plate is configured to deform away from the space when predetermined sides of the can are deformed toward the space.

Abstract: One embodiment disclosed includes a product comprising a fuel cell bipolar plate comprising a substrate comprising a first face, a reactant gas flow field defined in the first face, and a layer over at least a portion of the first face, wherein the layer comprises a zeolite.

Abstract: In a fuel cell including an electrolyte membrane and a pair of electrodes disposed on both sides of the electrolyte membrane, at least one of the electrodes has an electrically conductive nanocolumn that is oriented with an inclination of 60° or less with respect to a planar direction of the electrolyte membrane, a catalyst supported on the electrically conductive nanocolumn, and an electrolyte resin coating the electrically conductive nanocolumn.

Abstract: Provided are a battery pack manufacturing method, which can prevent a drawback where some of the used secondary batteries constituting a battery pack prematurely come to an end and which can suppress the enlargement of the temporary voltage difference between a used secondary battery at a charging/discharging time (especially in a low-temperature circumstance), and a battery pack. The battery pack manufacturing method includes an acquiring step of acquiring the individual internal resistances of used secondary batteries collected from the market, a selection step of selecting a plurality of the used secondary batteries having the internal resistances close to each other from a group of the used secondary batteries whose internal resistances have been acquired, and an assembling step of combining the used secondary batteries selected, to constitute the battery pack.

Abstract: A non-aqueous electrolyte secondary battery includes: a positive electrode capable of absorbing and desorbing lithium; a negative electrode capable of absorbing and desorbing lithium; a separator interposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte. The positive electrode includes a composite oxide represented by formula (1): LiNixM1-x-yLyO2 as an active material. The formula (1) satisfies 0.3?x?0.9 and 0?y?0.1. The element M is at least one selected from the group consisting of Co and Mn, and the element L is at least one selected from the group consisting of Mg, Al, Ti, Sr, Zn, B, Ca, Cr, Si, Ga, Sn, P, V, Sb, Nb, Ta, Mo, W, Zr, Y and Fe. The non-aqueous electrolyte includes a main solvent, a solute and vinyl ethylene carbonate.

Abstract: A technique for determining the relative humidity of the cathode input airflow to a fuel cell stack that eliminates the need for a dew-point sensor. The cathode input airflow is humidified by a water vapor transfer unit that uses water in the cathode exhaust gas. The technique employs an algorithm that determines the flow of water into the cathode inlet of the stack. In one embodiment, the algorithm determines the volume flow of water through the water vapor transfer unit using the Arrhenius equation, and then converts the water volume flow to a water mole flow. The algorithm then uses the water mole flow through the water vapor transfer unit and the water mole flow of ambient air to determine the water mole flow into the cathode inlet. The algorithm then uses the water mole flow into the cathode inlet to determine the relative humidity of the cathode airflow.

Abstract: There has been a problem that the cell units cannot bear the load exerted on the units while being stacked since a fuel cell stack including a refrigerant channel formed between cell units each having an even number of electrolyte/electrode structures (MEA) and metal separators which are alternated does not have any structure supporting the separators forming the refrigerant channel in a stacking direction. In order to solve the above problem, in each of a first power generating unit and a second power generating unit, projections formed at the buffer portions of the separators are disposed in the same positions in the stacking direction with the MEA interposed therebetween. Since between the first and second power generating units, the projections of the buffer portions are staggered, the projections of the first and second power generating units are thereby disposed in the same positions in the stacking direction.

Abstract: A portable electronic device includes a housing defining, an operating module, and a battery cover. The housing defines a receiving hole and a connector hole. The operating module includes an operating element, and an elastic element. An operating block projects from the operating element and is slidably received in the receiving hole. The elastic element is elastically positioned between the housing and the operating element. The battery cover can be pivotably attached to the housing and latches with the operating element.

Abstract: Proton conductivity has been shown in acceptor-doped rare earth orthoniobates and tantalates (LnNbO4 and LnTaO4) at high temperatures and in a humid atmosphere. The use of the materials as an electrolyte in a laboratory-scale fuel cell and water vapor sensor has been demonstrated. Results for Ca-doped LaNbO4 are given as examples.