Abstract: A resin composition for a non-aqueous electrolyte secondary battery that includes a vinylidene fluoride copolymer having a constituent unit derived from vinylidene fluoride and a constituent unit derived from a fluorine-containing alkyl vinyl compound. A melting point, measured in accordance with ASTM D3418, of the vinylidene fluoride copolymer is from 105° C. to 125° C., and a mass fraction Wa of the constituent unit derived from the fluorine-containing alkyl vinyl compound in the vinylidene fluoride copolymer, a degree of crystallinity DC of the vinylidene fluoride copolymer, and a degree of amorphicity DA of the vinylidene fluoride copolymer satisfy Equation (1) below: 4.7?Wa×(DC/DA)?14??(1).

Abstract: A substrate stainless steel sheet has [chemical form other than metal (Cr+Fe)]/[metal form (Cr+Fe)] of 12.0 or more and 200 or less, [chemical form other than metal (Cr+Fe)]/[metal form (Cr+Fe)] being a ratio of a total of Cr and Fe existing in chemical form other than metal to a total of Cr and Fe existing in metal form at a substrate stainless steel sheet surface.

Abstract: An energy storage system includes a housing in which a plurality of storage cells are arranged. The storage cells are thermally insulated from each other via a device arranged between the storage cells. The device is designed in such a way that the storage cells are spaced apart from each other. The device is made from temperature-resistant material. The device has projections and depressions. The device contains a material which is configured to be subjected to an endothermic chemical conversion when a temperature of 200° C. is exceeded.

Abstract: A detection system includes a power generation element; a first outer cover body enveloping the power generation element; a second outer cover body located between the power generation element and the first outer cover body, and enveloping the power generation element; a first space section enclosed by the first outer cover body and the second outer cover body; a second space section enclosed by the second outer cover body; and a detector that detects a gas in the first space section.

Abstract: An electrode assembly including an electrode stack including a plurality of radical units including an electrode and a separator and having a structure in which the plurality of radical units are sequentially stacked, wherein at least a portion of a circumference of the electrode stack is surrounded by the separator, a curved surface having a curvature radius is formed on a top or bottom surface of the electrode stack, and the separator surrounding at least the portion of the circumference of the electrode stack surrounds the curved surface formed on the electrode stack to maintain a relative distance between the radical units adjacent to each other is provided. A method of forming the electrode assembly is also provided.

Abstract: Thermoresponsive composite switch (TRCS) membranes for ion batteries include a porous scaffolding providing ion channels and a thermoresponsive polymer coating. Boron nitride nanotube (BNNT)/polymer composite TRCS membrane embodiments are preferable due to unique BNNT properties. A BNNT scaffold coated with one or more polymers may form a composite separator with tunable porosity (porosity level and pore size distribution), composition, wettability, and superior electronic isolation, oxidative/reduction resistance, and mechanical strength. The BNNT/polymer composite TRCS membrane optimizes the performance of ion batteries with tunable separator thicknesses that may be under 5 ???. Nano-scale porosity with thin separator thicknesses improves the charge density of the battery. Nano-scale architecture allows for reversible localized switching on the nano scale, in proximity to thermally stressed ion substrates.

Abstract: The present invention is provided to reduce the influence of expansion and contraction of an active material, form a favorable interface between the solid electrolyte and the active material, and increase ion conductivity in the electrolyte, thereby obtaining a wide operation temperature range. A secondary battery composite electrolyte includes an inorganic compound having an Li ion conductivity at room temperature that is 1×10?10 S/cm or more and having particle diameter of 0.05 ?m or more and less than 8 ?m, and an organic electrolyte. The weight ratio between the organic electrolyte and the inorganic compound is 0.1% or more and 20% or less.

Abstract: Provided herein is a fiber having a fiber body including fiber body material with a longitudinal-axis fiber body length. A plurality of gel domains is disposed within the fiber body along at least a portion of the longitudinal-axis fiber body length. Each gel domain includes a porous host matrix material and a liquid gel component that is entrapped in the molecular structure of the host matrix material and that is disposed in interstices of the host material matrix. At least two of the gel domains within the fiber body are disposed directly adjacent to each other in direct physical contact with each other. This fiber can include polymeric fiber body material and gel domains including a porous polymer host matrix material and an ionically conducting liquid solvent that is entrapped in the molecular structure of the polymer host matrix material and disposed in interstices of the polymer host material matrix.

Abstract: The object of the invention is to provide a new lithium ion battery system that can have both high energy density and fast chargeable capability. The invention provides a lithium ion battery, comprising an anode comprising an anode active material layer on an anode current collector, the anode active material layer having a mass load higher than 60 g/m2, a cathode comprising a cathode active material layer on a cathode current collector, the cathode active material layer having a mass load higher than 100 g/m2, and an electrolytic solution comprising an imide anion based lithium salt and LiPO2F2, wherein at least one of the anode and cathode active material layers comprises a spacer composed of a hard carbon.

Abstract: The present disclosure provides a cell and a battery. The cell includes a cell body and a packaging pouch for accommodating the cell body therein. The packaging pouch includes a seal portion, and the seal portion includes a sealed area. The sealed area includes a recess portion. The recess portion is provided in an end surface of the sealed area adjacent to the cell body and is recessed in a direction away from the cell body.

Abstract: Embodiments are directed to contact plates configured to establish electrical bonds between battery cells in a battery module. In a first embodiment, the contact plate includes at least one primary conductive layer including a hole that is aligned with two or more terminals of two or more battery cells in a group of battery cells that are configured to be connected in parallel with each other, and a bonding connector configured to provide direct electrical bonds between the contact plate and the two or more terminals of the two or more battery cells. In a second embodiment, a contact plate includes at least one primary conductive layer and a set of bonding connectors made from at least one material that is selected to match at least one material used for the terminals of the at least one group of battery cells.

Abstract: An apparatus may include a first panel including a first upper surface and a first lower surface. The first upper surface may include a cavity extending into the first upper surface towards the first lower surface and a bus bar within the cavity. In addition, the apparatus may include a second panel having a second lower surface in direct contact with the first upper surface, wherein the second lower surface extends over a substantial portion of the cavity. In addition, the bus bar may include a first coupling element. The first coupling element may be configured to be mechanically coupled to a terminal of a battery module. Further, the cavity may position the first coupling element to align with the terminal.

Abstract: An activation mechanism for a battery for an electronic ignition mechanism contains an ampoule filled with an electrolyte. The mechanism for breaking has a snap spring element to which the ampoule is attached in a freely suspended manner. The snap spring element snaps from a first shape into a second shape when a force due to acceleration is applied, thereby severing the attachment of the ampoule.

Abstract: A method of setting a cutting time of a gasket during manufacture of a membrane electrode assembly (MEA) is provided. The method includes: moving a reaction sheet, in which electrode layers are formed on an electrolyte membrane with a predetermined interval; photographing a boundary area between the electrolyte membrane and the electrode layer in the moving reaction sheet by using a fixed vision; setting a front end reference line and a rear end reference line between a front-most end and a rear-most end in the boundary area; calculating a trigger reference line between the front end reference line and the rear end reference line, except for a front portion of the front end reference line and a rear portion of the rear end reference line; and calculating a cutting time of a gasket based on the trigger reference line.

Abstract: A rechargeable battery according to an exemplary embodiment of the present invention includes: an electrode assembly formed by spirally winding a first electrode, a separator, and a second electrode; and a pouch that forms a sealing portion by thermally bonding an outer edge of a first external material and an outer edge of a second external material that receive the electrode assembly to withdraw tabs respectively connected to the first electrode and the second electrode to the outside, wherein the electrode assembly includes first curved portions that are convex at opposite sides of a first planar portion in a spiral-wound cross-section, the pouch includes a second planar portion corresponding to the first planar portion, and second curved portions that are connected to the second planar portion corresponding to the first curved portions, and the sealing portion is disposed in spaces, each set by an extension plane set in an extension direction of the first planar portion, external surfaces of the second cu

Abstract: A method for manufacturing a battery cell (1) and a battery cell (1) comprises providing a battery housing (3) and introducing electrodes (5) and an electrolyte (9) into the battery housing (3). At least partial regions (23) of a surface, in particular an outer surface, of the battery housing (3) are coated with a diffusion barrier layer (25) made of a polymer material (27) and then the polymer material (27) of the diffusion barrier layer (25) is oxidized at least on the surface to form an oxide layer (29). The polymer material (27) may be in particular silicone so that the oxide layer (29) consists of silicon dioxide. An oxide layer (29) thus generated increases a barrier effect of the diffusion barrier layer (25) considerably and may be generated using technically simple means, such as for example an atmospheric pressure plasma.

Abstract: In a laser welding step, a laser beam is irradiated fin a thickness direction of an external terminal from a side of a front surface of a bus bar toward a space. This irradiation melts a separated portion of the external terminal, i.e., a portion located apart from the insulating part by the space between the insulating part and the separated portion in the thickness direction, and an opposed portion of the bus bar, i.e., a portion opposed to the space via the separated portion in the thickness direction, thereby forming a welded portion including the separated portion and the opposed portion melted together.

Abstract: The present invention is provided to reduce the influence of expansion and contraction of an active material, form a favorable interface between a solid electrolyte and an active material, and improve the high temperature durability and cycle lifespan of a battery. A secondary battery composite electrolyte includes an inorganic compound having an Li ion conductivity at 25° C. that is less than 1×10?10 S/cm and an organic electrolyte. The weight ratio between the organic electrolyte and the inorganic compound is 0.1% or more and 20% or less.

Abstract: A battery includes an electrode group including an air electrode and a negative electrode stacked with a separator therebetween, and an accommodating bag accommodating the electrode group along with an alkali electrolyte solution. The air electrode includes a catalyst for an air secondary battery. This catalyst for an air secondary battery is produced by a method for producing a catalyst for an air secondary battery, the method including a precursor preparation step of preparing a bismuth-ruthenium oxide precursor, a calcination step of calcining the bismuth-ruthenium oxide precursor obtained in this precursor preparation step to form a bismuth-ruthenium oxide, and a nitric acid treatment step of immersing the bismuth-ruthenium oxide obtained by this calcination step in a nitric acid aqueous solution.

Abstract: Battery assembly techniques and a corresponding system are disclosed. In various embodiments, the battery assembly techniques include compressing battery cells and inserting the battery cells in a can. Battery cells are stacked and then compressed using pneumatic cylinders that exert pressure on a first external layer of the stacked battery cells. A first portion of the stacked battery cells is released from the pneumatic cylinders while a second portion of the battery cells remains compressed. The first portion of the stacked battery cells is inserted in a can. In various embodiments, friction decreasing materials are added to the stacked battery cells to compress the stacked battery cells or ease insertion.