Abstract: A sealed battery includes a battery case with a bottomed cylindrical shape having an opening; an electrode body housed in the battery case; an electrolyte solution; and a sealing member that closes the opening of the battery case. The sealing member is formed by stacking a terminal cap, a bottom plate electrically connecting the terminal cap and an electrode of one polarity of the electrode body, and a valve body interposed between the terminal cap and the bottom plate. The valve body has a surface covered with a resin material, and an end surface that is an outer edge of the valve body is covered with a protective layer containing a compound A having corrosion resistance to the electrolyte solution.

Abstract: A nonaqueous electrolyte secondary battery including a battery case; and an electrode assembly and a nonaqueous electrolyte, housed in the battery case. The electrode assembly includes a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. At least one of the positive electrode and the negative electrode includes a material mixture layer including an active material and a binder, and a current collector holding the material mixture layer. The binder contains a first resin and a second resin. The first resin is a fluorocarbon resin. The second resin is a copolymer of a styrene monomer unit and a (meth)acrylic acid monomer unit.

Abstract: This film material for battery sheathing includes a gas barrier layer and also a seal layer superposed on one side of the gas barrier layer and containing a first resin. The film material has anisotropic tensile strength, and the tensile strength A at 5% elongation in a first direction, the direction in which the film material has the smallest tensile strength, and the tensile strength B at 5% elongation in a second direction, the direction perpendicular to the first direction, satisfy A/B?0.95.

Abstract: A thin battery includes a sheet-like electrode assembly; a non-aqueous electrolyte with which the electrode assembly is impregnated; and a housing in a sealed manner. The electrode assembly includes a pair of first electrodes located at an outermost side of the electrode assembly, a second electrode interposed between the pair of first electrodes, and a separator disposed between each first electrode and the second electrode. The first electrode includes a first current collector sheet and a first active material layer attached to one surface of the first current collector sheet. The second electrode includes a second current collector sheet and second active material layers attached to both surfaces of the second current collector sheet. A content x of the non-aqueous electrolyte per unit area of the first active material layer is larger than a content y of the non-aqueous electrolyte per unit area of the second active material layer.

Abstract: A thin pouch battery, which is used as a power source of a portable electronic apparatus, a portable electronic terminal, or the like, includes protrusions, into which an electrode group is inserted, formed in both a laminate film on the upper side and a laminate film on the lower side. Then, concentrically concave and convex wave shapes (concentric crest ridges or trough furrows) are formed on the top surface of each of the protrusions such that the protrusion can extend or shrink in any direction, or the protrusion has a side surface that is gradually inclined and a wave shape is formed on the side surface of the protrusion.

Abstract: In a battery including an electrode assembly including a positive electrode, a negative electrode, and an electrolyte layer interposed therebetween, and an exterior body, configured to hermetically house the electrode assembly, a film exterior body for a battery is used. The film exterior body for a battery includes a gas barrier layer, and a seal layer that is stacked on one surface of the gas barrier layer and includes a first resin. The gas barrier layer includes a first metal layer having a Young's modulus of 65×109 N/m2 or less, and a thickness T1 of the first metal layer is more than 5 ?m and 200 ?m or less.

Abstract: A thin cell including a sheet-like first electrode, a sheet-like second electrode, a separator disposed between the first and second electrode, a first lead connected to the first electrode and extending to the outside of a housing, and a second lead connected to the second electrode and extending to the outside of the housing. The first electrode and the second electrode respectively include a rectangular current collector sheet and an active material layer attached to a surface thereof. Furthermore, at least one of the current collector sheets has a tab extending from a part of one side thereof in a plane direction of the current collector sheet and being connected to a lead, the tab forming a flat spring structure that expands and contracts in the plane direction.

Abstract: There is provided a pouch-type battery that includes an exterior packaging member having an accommodating space in which an electrode and an electrolyte are accommodated and which has a curved shape at least in a first direction. The exterior packaging member includes a first film member on which a cup section having the accommodating space inside is provided, a second film member disposed to face the first film member, and a sealing section around the cup section, with which the first and second film members are bonded to each other and the accommodating space is sealed. A top surface of the cup section of the first film member has a curved shape and is provided with a plurality of concave portions or convex portions, and the sealing section has a curved shape in the first direction and is configured of a flat surface on which neither concave portion nor convex portion is provided.

Abstract: A laminated battery includes a stacked electrode group including a positive electrode, a negative electrode, a dummy electrode, a first separator interposed between the positive and negative electrodes, and a second separator interposed between the positive and/or negative electrode and the dummy electrode; and an electrolyte. At least one positive electrode and/or at least one negative electrode includes a single-sided electrode including a current collector and an electrode active material layer formed on a first surface of the current collector. A second surface of the current collector is exposed. The dummy electrode is a metal foil facing the second surface of the current collector of the single-sided electrode and having a polarity opposite to that of the single-sided electrode. Adhesive strengths F1 and F2 on both sides of the first separator and adhesive strengths F3 and F4 on both sides of the second separator satisfy F1+F2>F3+F4.

Abstract: A flexible battery including a sheet-like electrode group including first electrode, second electrode, and an electrolyte layer; electrode lead terminals; and a housing. First ends of the electrode lead terminals are connected to the electrodes on a side S1t side of the electrode group. Each electrode includes a current collector and an active material layer. First active material layer (A1) on one main surface of first electrode has a non-facing portion (Pt) with respect to second active material layer (A2) on one main surface of second electrode on the S1t side, and a non-facing portion (Pn) with respect to second active material layer (A2) on one main surface of second electrode on the opposite side to the S1t. The shortest length LAt of the non-facing portion (Pt) and the shortest length LAn of non-facing portion (Pn) satisfy LAt<LAn in the horizontal state.

Abstract: A thin battery includes a sheet-like electrode assembly; a non-aqueous electrolyte with which the electrode assembly is impregnated; and a housing in a sealed manner. The electrode assembly includes a pair of first electrodes located at an outermost side of the electrode assembly, a second electrode interposed between the pair of first electrodes, and a separator disposed between each first electrode and the second electrode. The first electrode includes a first current collector sheet and a first active material layer attached to one surface of the first current collector sheet. The second electrode includes a second current collector sheet and second active material layers attached to both surfaces of the second current collector sheet. A content x of the non-aqueous electrolyte per unit area of the first active material layer is larger than a content y of the non-aqueous electrolyte per unit area of the second active material layer.

Abstract: A thin battery including a sheet-like electrode assembly; a non-aqueous electrolyte with which the electrode assembly is impregnated; and a housing in a sealed manner. The electrode assembly includes a pair of first electrodes disposed at outermost sides of the electrode assembly, at least one second electrode disposed between the pair of first electrodes, and a first separator disposed therebetween. The first and second electrodes respectively include first and second current collector sheets and first and second active material layers attached to one surface of the first and second current collector sheets. The first separator is bonded to the first active and second active material layers. Sliding resistance R11 between the first separator and each first active material layer and sliding resistance R12 between the first separator and each second active material layers satisfy: 0.5 N/cm2?R11<R12?2.3 N/cm2.

Abstract: A thin pouch battery, which is used as a power source of a portable electronic apparatus, a portable electronic terminal, or the like, includes protrusions, into which an electrode group is inserted, formed in both a laminate film on the upper side and a laminate film on the lower side. Then, concentrically concave and convex wave shapes (concentric crest ridges or trough furrows) are formed on the top surface of each of the protrusions such that the protrusion can extend or shrink in any direction, or the protrusion has a side surface that is gradually inclined and a wave shape is formed on the side surface of the protrusion.

Abstract: There is provided a pouch-type battery that includes an exterior packaging member having an accommodating space in which an electrode and an electrolyte are accommodated and which has a curved shape at least in a first direction. The exterior packaging member includes a first film member on which a cup section having the accommodating space inside is provided, a second film member disposed to face the first film member, and a sealing section around the cup section, with which the first and second film members are bonded to each other and the accommodating space is sealed. A top surface of the cup section of the first film member has a curved shape and is provided with a plurality of concave portions or convex portions, and the sealing section has a curved shape in the first direction and is configured of a flat surface on which neither concave portion nor convex portion is provided.

Abstract: Provided is a thin battery including: a sheet-like electrode assembly including a positive electrode, a negative electrode, and an electrolyte layer interposed therebetween; electrode lead terminals connected to the positive electrode and the negative electrode, respectively; and an outer packaging housing the electrode assembly, each one of the positive and negative electrodes including a current collector and an active material layer, the current collector having a main portion and an extending portion, the main portion having a formed portion with the active material layer and a non-formed portion without the active material layer, the extending portion extending from a part of the non-formed portion, a first end portion of each of the electrode lead terminals having a joining portion joined to the non-formed portion and the extending portion, and a second end portion of each of the electrode lead terminals extended out of the outer packaging.

Abstract: Provided is a thin battery including: an electrode assembly; and a flexible housing configured to house the electrode assembly. The electrode assembly includes: a positive electrode in sheet form; a negative electrode in sheet form; and an electrolyte layer interposed therebetween. The electrolyte layer includes: a non-aqueous electrolyte; and a non-woven fabric sheet configured to retain the non-aqueous electrolyte. The non-woven fabric sheet includes a conjugated fiber including at least two kinds of macromolecules conjugated together. The at least two kinds of macromolecules include: a first macromolecule without a cross-linked structure; and a second macromolecule with a cross-linked structure.