A sheathing material for an all solid state battery, the sheathing material including at least: a stack including a substrate layer, a barrier layer, and a heat fusible resin layer in this order; and an insulating layer provided on the heat fusible resin layer on the opposite side from the substrate layer side, wherein when an all solid state battery obtained by accommodating, in a packaged formed from the sheathing material for an all solid state battery, a battery element which includes at least a unit cell including a positive electrode active material layer, a negative electrode active material layer, and a solid state electrolyte layer stacked between the positive and negative electrode active material layers is seen in plan view, the insulating layer is disposed at a position covering the entire surface of the positive electrode active material layer in the all solid state battery.

A packaging material for a battery includes a base material layer as an outer layer, a sealant layer as an inner layer, and a barrier layer provided between the base material layer and the sealant layer. The sealant layer is composed of a single layer or a multi-layer. The sealant layer includes a first sealant layer serving as an innermost layer made of a propylene-based resin containing an ethylene-propylene copolymer. In the ethylene-propylene copolymer, a ratio Mw/Mn of a weight average molecular weight Mw to a number average molecular weight Mn, measured by a gel permeation chromatography (GPC), is 1 to 7, a melt flow rate measured at 230° C. at a load of 2.16 kg based on JIS K7210 is 5 g/10 min to 30 g/10 min, and a melting point calculated by a differential scanning calorimetry analysis is 120° C. to 135° C.

Polymer-fused batteries are provided. The battery includes a casing, an anode coupled to the casing, an electrical source disposed between the casing and the anode, and a fuse. The polymer fuse comprises an electrically-conductive material formulated to decompose upon contact with a bodily fluid.

A method for producing a battery includes depositing, via sputter deposition, a coating on at least a portion of a cup shaped first housing part of the battery. The coating includes aluminium, chromium, tin, and/or an alloy having two or more of the group consisting of aluminium, chromium, and tin. The method also includes establishing an electrical connection between a current conductor of the battery and the cup-shaped first housing part of the battery and assembling the cup-shaped first housing part of the battery and a second housing part of the battery to form a housing of the battery. The housing has an interior space that includes a composite body including a positive electrode, a negative electrode, a separator, and the current conductor. The cup-shaped first housing part has a circular or oval bottom and a ring-shaped side wall.

Apparatus, systems, and methods described herein relate to the manufacture and use of electrochemical cells with a flame retardant mechanism. In some embodiments, an electrochemical cell includes a first current collector coupled to a first portion of a first pouch, the first current collector having a first electrode material disposed thereon. The electrochemical cell further includes a second current collector coupled to a second portion of the first pouch, the second current collector having a second electrode material disposed thereon. The electrochemical cell further includes a separator disposed between the first electrode material and the second electrode material, the first portion of the first pouch coupled to the second portion of the first pouch to enclose the electrochemical cell. The electrochemical cell further includes a flame retardant material coated to the first pouch and a second pouch, the second pouch enclosing the first pouch and the flame retardant material.

A packaging material for batteries, which is not susceptible to warping, while having excellent formability. A packaging material for batteries is configured from a laminate that is sequentially provided at least with one or more substrate layers, a barrier layer, a cured resin layer and a thermally fusible resin layer in this order. At least one of the substrate layers is formed of a polybutylene terephthalate film; and the value (X/Y) which is obtained by dividing the puncture strength X (N) of the laminate by the thickness Y (μm) of the polybutylene terephthalate film, the puncture strength X (N) being determined by piercing the laminate from the substrate layer side by a method that complies with the prescription of JIS Z1707 (1997), is 1.02 N/μm or more.

The present disclosure provides batteries that have a reduced risk or no risk of gastrointestinal damage in a conductive aqueous environment, such as when accidentally swallowed. The batteries of the present disclosure advantageously stop producing significant current flow shortly after contact with a conductive aqueous medium, including the conductive aqueous medium of a wet tissue environment such as that found in the GI tract. The present disclosure further provides multi-layered laminate materials useful for manufacturing such batteries and methods for making the batteries. The batteries are, in some embodiments, 3 V or 1.5 V coin or button cell-type batteries.

An aluminum alloy foil having superior formability is provided. An aluminum alloy foil, including 0.8 to 2.0 mass % of Fe, 0.05 to 0.2 mass % of Si, and 0.0025 to 0.5 mass % of Cu, with the rest consisting of Al and unavoidable impurities, wherein the aluminum alloy foil has an average crystal grain size of 20 μm or less, and a number of intermetallic compounds existing in the aluminum alloy foil, the intermetallic compounds having a circle equivalent diameter of 1.0 to 5.0 μm, is 1.0×10.sup.4 grains/mm.sup.2 or more, is provided.

A pouch battery and a manufacturing method thereof are disclosed. The pouch battery includes: a battery core; a first encapsulating part configured to partially cover the battery core; an electrolyte contained in the first encapsulating part and soaking the battery core; and a second encapsulating part configured to be integrally spliced with the first encapsulating part to encapsulate the battery core; wherein the first encapsulating part is a metal component, and the second encapsulating part is a composite film component.

There is provided An inside-out alkaline battery, including: a cylindrical cathode can that has a bottom, that performs a function of a cathode current collector, that has a nickel-plated layer on an inner surface of the cathode can, and that has a coating on a surface layer of the nickel-plated layer, the coating being composed of nickel-cobalt alloy, a thickness of the coating being between 0.15 μm and 0.25 μm (both inclusive), a ratio of cobalt in the nickel-cobalt alloy being between 40% and 60% (both inclusive); and a cathode mixture that is disposed in the cathode can, that is annular in shape, and that contains a cathode active material.