Abstract: A lithium-ion secondary battery includes: a laminate including a positive electrode, a negative electrode, and a separator; a nonaqueous electrolyte solution; terminals; and an inclusion body. The negative electrode includes a negative electrode active material including a titanium-containing oxide, and at least one negative electrode additive selected from a carbon material, a silicon-based material, a tin-based material, and a bismuth-based material. A relation between a weight (Ma) of the negative electrode additive and a weight (Mt) of the negative electrode active material is 1.0<Mt/Ma<30.0. An area (Sp) of a positive electrode active material layer of the positive electrode is smaller than an area (Sn) of a negative electrode active material layer of the negative electrode. A positive electrode capacity (Qp) is smaller than a negative electrode capacity (Qn).

Abstract: A battery pack includes a plurality of laminate batteries. Each of the laminate batteries contains a layered body, an outer packaging that is formed from a laminate film enclosing the layered body, a pair of electrode terminals. The outer packaging has a battery part and a bag part that is a space of which a volume is changeable, and communicates to the battery part through a single communication part, the bag part is disposed close to a second edge, which is opposite to a first edge, and the battery part is disposed close to the first edge. The laminate batteries are all arranged in a manner to have the second edges of the outer packagings on an upper side of the battery pack in a vertical direction, which is parallel to the gravity, and to have the first edge on a lower side of the battery pack in the vertical direction such that all the bag parts are disposed above the battery parts in the vertical direction.

Abstract: A non-aqueous electrolyte secondary battery comprising an enclosure in which plural kinds of positive electrodes having a positive electrode active material; a non-aqueous electrolyte; a negative electrode containing a titanium compound as a main component of a negative electrode active material; and a separator held between the positive electrode and the negative electrode and formed from an electrical insulating material are enclosed, which comprises a separator-holding negative electrode which is held by the separator from both sides thereof and is disposed between one of the positive electrodes and the other one of the positive electrode adjacent thereto, the separator-holding negative electrode serving as the negative electrode, and wherein the plural kinds of the positive electrodes comprises a first positive electrode containing a layered rock salt compound as the positive electrode active material, and a second positive electrode whose main component is a positive electrode active material different i

Abstract: A nonaqueous electrolyte secondary battery, wherein the negative electrode contains a titanium-containing oxide; the positive electrode contains a spinel type lithium manganate, and a cobalt-containing compound and/or a lithium-transition metal composite oxide having a stratified rock salt type structure; and the nonaqueous electrolyte contains one compound selected from the group consisting of an organic compound having an oxalic acid backbone, an organic compound having an isocyanate group, a lithium salt of an organic compound having a sulfonic acid backbone, and a succinic anhydride compound having a side chain with 3 or more carbon atoms in a content of 0.01 to 5% by weight with respect to 100% by weight of the nonaqueous electrolyte.

Abstract: The present invention is intended to provide a lithium-ion secondary battery and an assembled battery that have good cycle characteristics and safety while using a negative electrode in which an additive such as a carbon-based material is used in combination with a titanium-containing oxide. In the present invention, a lithium-ion secondary battery includes: a laminate including a positive electrode, a negative electrode, and a separator; a nonaqueous electrolyte solution; terminals; and an inclusion body. The negative electrode includes: a negative electrode active material including a titanium-containing oxide; and at least one negative electrode additive selected from a carbon material, a silicon-based material, a tin-based material, and a bismuth-based material. A relation between a weight (Ma) of the negative electrode additive and a weight (Mt) of the negative electrode active material is 1.0<Mt/Ma<30.0.

Abstract: A battery pack containing a plurality of plate-shaped laminate batteries arranged in a direction vertical to a plate-shaped surface of one of the laminate batteries. The laminate battery contains: a layered body which includes a negative electrode, a separator, and a positive electrode, and is disposed parallel to the plate-shaped surface of the laminate battery; an outer packaging including a laminate film enclosing the layered body; and an electrode terminal which is electrically connected to the layered body and extends from a one side part of the outer packaging. The outer packaging has, in an inside thereof, a battery part having a space in which the layered body exists and a bag part which has a space a volume of which is changeable, communicates to the battery part through a communication part, and is disposed on an other side part opposite to the one side part.

Abstract: A non-aqueous electrolyte secondary battery comprising an enclosure in which plural kinds of positive electrodes having a positive electrode active material; a non-aqueous electrolyte; a negative electrode containing a titanium compound as a main component of a negative electrode active material; and a separator held between the positive electrode and the negative electrode and formed from an electrical insulating material are enclosed, which comprises a separator-holding negative electrode which is held by the separator from both sides thereof and is disposed between one of the positive electrodes and the other one of the positive electrode adjacent thereto, the separator-holding negative electrode serving as the negative electrode, and wherein the plural kinds of the positive electrodes comprises a first positive electrode containing a layered rock salt compound as the positive electrode active material, and a second positive electrode whose main component is a positive electrode active material different i

Abstract: A nonaqueous electrolyte secondary battery, wherein the negative electrode contains a titanium-containing oxide; the positive electrode contains a spinel type lithium manganate, and a cobalt-containing compound and/or a lithium-transition metal composite oxide having a stratified rock salt type structure; and the nonaqueous electrolyte contains one compound selected from the group consisting of an organic compound having an oxalic acid backbone, an organic compound having an isocyanate group, a lithium salt of an organic compound having a sulfonic acid backbone, and a succinic anhydride compound having a side chain with 3 or more carbon atoms in a content of 0.01 to 5% by weight with respect to 100% by weight of the nonaqueous electrolyte.

Abstract: To enhance the safety of battery, in a thin type battery, by securely cutting off electric connection when the internal pressure of the battery is raised.An upper valve disc and a lower valve disc are disposed through an electric insulating gasket, a part of the upper valve disc is formed in a recess shape, and a tiny hole and a continuous thin wall part are formed in a part of the lower valve disc, and the bottom of the recess part of the upper valve disc and the portion enclosed by the tiny hole and thin wall part of the lower valve disc are fused, and the structure is constituted so that the strength of the lower valve disc may be greater than the strength of the upper valve disc.

Abstract: A packed battery includes a frame composed of a pair of substantially I-shaped frame members molded of synthetic resin and joined together to hold therein a power generating elements composed of a plurality of series-connected cells, and an end cap molded of synthetic resin and joined with the frame to close an open end of the frame. One of the frame members has in its one end face a pair of apertures through which a pair of external terminals is inserted for connection to positive and negative terminal end faces of the power generating element. With this construction, the packed battery has a high capacity per unit volume and the external terminals and the positive and negative terminal end faces can be welded easily and efficiently. Accordingly, the packed battery can be manufactured at a high rate of production.