Abstract: A highly safe and high energy density battery is provided. A battery (1) includes: a laminated body (100) in which a positive electrode (20) including a positive electrode collector (22), a solid electrolyte (30) and negative electrode (10) including a negative electrode collector (12) are repeatedly arranged, and at least any of the positive electrode collector (22) and negative electrode collector (12) is respectively drawn from an end face of the laminated body (100), and configures a plurality of negative electrode collector tabs (12a, 12b, 12c and 12d); an outer packaging (300) which houses the laminated body (100); and a lead terminal (200) which is electrically connected with the plurality of collector tabs, and having a part extending from the outer packaging (300) to outside, in which the lead terminal (200) is connected with a first overcurrent isolation part (210) arranged inside of the outer packaging (300).

Abstract: To provide a battery module capable of improving the workability in manufacturing. A battery module (1) includes: a plurality of battery cells (10) each including: a battery (11); and an exterior packaging body (12) that houses the battery (11). The battery (11) incudes: a negative electrode including a negative electrode current collector; an electrolyte; and a positive electrode including a positive electrode current collector. The plurality of battery cells (10) each include: a current collector tab (13, 15) extending from each of the positive electrode current collector and the negative electrode current collector; and a current collector tab lead (14, 16) connected to each of the current collector tabs (13, 15). The current collector tab lead (14, 16) extends in a vertical direction (y2) perpendicular to the stacking direction (y1) of the plurality of battery cells (10).

Abstract: To provide a solid-state battery module capable of easily performing positioning of solid-state battery cells and preventing misalignment of a laminated body, and the solid-state battery cells. A solid-state battery module 1 includes: a plurality of solid-state battery cells 10, each including a solid-state battery 11 and an outer sheath 12 that accommodates the solid-state battery 11; an insulating member 14; and a mounting plate 4 that mounts the plurality of solid-state battery cells 10. The solid-state battery 11 includes a laminated body 110 including a negative electrode layer, a solid electrolyte layer, and a positive electrode layer, and a collector tab 13, and the insulating member 14 is provided on a side face other than a side face on which the collector tab 13 of the laminated body 110 is provided.

Abstract: To enhance stiffness of a battery ceil and avoid cracking of an electrode without a reinforcement member in the battery cell configured such that a battery is covered with an exterior body including a laminated film. A battery cell includes a battery and an exterior body housing the battery. The exterior body includes a film in which a plurality of layers is stacked on each other, and the plurality of layers includes a surface layer to be a stiffness reinforcing layer, an air blocking layer, and an inner layer to be an adhesive layer. A buffer layer made of polyethylene terephthalate may be interposed between the air blocking layer and the inner layer. Moreover, an adhesive layer may be interposed between the air blocking layer and the surface layer. Further, a waterproof layer made of polypropylene or polyethylene terephthalate may be provided outside the air blocking layer.

Abstract: The present disclosure is intended to provide a battery cell and a battery module including such battery cells, the battery cells being easy to fix and resistant to misalignment with respect to each other, and the battery module receiving a uniform restraining load. A battery cell 10 includes a battery 11 and an outer sheath 12 that accommodates the battery 11 therein while being fixed to and adhering to the battery 11, the outer sheath 12 having an outermost layer L2 at least a portion of which is provided with a low melting point resin layer.

Abstract: To efficiently stack battery cells without shifting of the positions of the battery cells from each other in view of the above-described problems on module formation from the battery cells. When the battery cells are stacked to form a module, the extension portion 22c of the exterior body of the battery cell 2 extending from the side surface of the battery on the side from which the collection tab lead does not extend is joined onto a side surface 22a, from which a collection tab lead does not extend, of an adjacent battery cell.

Abstract: A positive electrode for a solid-state battery, a manufacturing method for a positive electrode for a solid-state battery, and a solid-state battery are provided, with which the occurrence of lamination misalignment in a lamination step when manufacturing a solid-state battery and the occurrence of cracking at the time of lamination pressing, as well as short-circuiting due to contact with a tab, can be suppressed. For a collector of an electrode layer, a coating layer is formed not only on the outer side of an active material layer including an active material but also on end faces of the collector.

Abstract: A lithium ion secondary battery that, when current collector tabs of the lithium ion secondary battery are bundled together and joined with a lead terminal, can prevent the current collector tabs from cracking or breaking and can ensure that both of an electrical connection and a physical connection between the current collector tabs and the lead terminal are guaranteed is provided.

Abstract: To provide an electrical storage device in which a positive electrode material and a negative electrode material are each impregnated with a different type of electrolytic solution and a method for making the same. An electrical storage device (1) includes a negative electrode (2) including an organic electrolytic solution (21), a positive electrode (3) including an aqueous electrolytic solution (31), and a solid electrolyte (4) disposed between the negative electrode (2) and the positive electrode (3). The negative electrode (2) is entirely sealed. The electrical storage device (1) includes a sealing member (5), which is provided at the periphery of the negative electrode (2) and seals the negative electrode (2). The solid electrolytes (4) form a pair including a sealing material and together with the sealing member (5) seal the negative electrode (2) so that the negative electrode (2) is disposed between the solid electrolytes (4).

Abstract: To provide a lithium ion secondary battery in which it is possible to prevent an electrode end part from cracking, when current collector tabs of the lithium ion secondary battery are bound to each other and joined to a lead terminal. A lithium ion secondary battery includes a lithium ion secondary battery main body and a lead terminal. The lithium ion secondary battery main body has a laminated body repeatedly disposed with positive electrodes respectively including positive electrode current collectors, solid electrolytes, and negative electrodes respectively including negative electrode current collectors. The current collectors respectively extend from an end face of the laminated body in an identical direction to constitute a plurality of current collector tabs. The lead terminal is electrically coupled to the plurality of current collector tabs. The current collector tabs and the lead terminal are coupled to each other via an electrically-conductive tab guiding part.

Abstract: To provide a fast charger and a fast charging method that are highly efficient in fast charging of a solid-state battery. A fast charger includes a charging section, a temperature acquisition section, and a controller. The charging section feeds current to a solid-state battery being a secondary battery. The temperature acquisition section acquires a temperature of the solid-state battery. The controller performs control to cool the solid-state battery if the temperature acquired by the temperature acquisition section is greater than or equal to a predetermined temperature. The controller determines a plurality of inflection points on a curve representing changes in the temperature of the solid-state battery against internal resistance of the solid-state battery. The predetermined temperature corresponds to an inflection point on a high-temperature side among the plurality of inflection points.

Abstract: A positive electrode for a solid-state battery, a manufacturing method of the positive electrode for the solid-state battery, and the solid-state battery are provided such that the occurrence of cracking during lamination pressing at the time of manufacturing the solid-state battery and short-circuiting due to contact with a tab can be suppressed. A guide is provided on the outer periphery of a positive electrode active material layer, whereby pressure applied during the lamination pressing is dispersed, and short-circuiting due to contact with a tab is suppressed. Specifically, the guide is provided on at least two adjoining sides of the outer periphery of the positive electrode active material layer of a surface having the positive electrode active material layer.

Abstract: The present invention provides a solid-state battery cell and a solid-state battery module including the same. The solid-state battery cell includes: a laminate including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer present between the positive electrode layer and the negative electrode layer; a positive electrode tab connected to the positive electrode layer; a negative electrode tab connected to the negative electrode layer; and a pair of conductive clamping plates clamping the laminate from both sides in a laminating direction of the laminate. One of the pair of clamping plates is electrically connected to the positive electrode tab, and the other clamping plate is electrically connected to the negative electrode tab.

Abstract: Provided is a battery module including a plurality of battery cells stacked on one another and being capable of effectively preventing damage to the battery cells despite such a configuration. A battery module 1 includes a plurality of battery cells 10 stacked on one another and a battery cell support 2. The battery cells 10 each include a battery 11 and an exterior casing 12 accommodating the battery 11. The battery cell support 2 is disposed between the plurality of battery cells 10. The battery module preferably further includes a fixation film 6 wound around the plurality of battery cells in a stacking direction and fixing the plurality of battery cells.

Abstract: Provided is a battery cell that can effectively overcome problems caused by known battery cells having an outer jacket constituted by one folded film. A battery cell includes a battery, and an outer jacket accommodating the battery. At least one end face of the battery is connected to a current-collecting tab lead. The outer jacket is constituted by one film which is folded along another end face of the battery different from the end face connected to the current-collecting tab lead, and end portions of which are joined to each other such that the current-collecting tab lead is sandwiched between the end portions. The outer jacket has a hole at a position adjacent to the end face connected to the current-collecting tab lead, the hole being blocked.

Abstract: To provide a solid-state battery allowing the yield of the solid-state battery to be improved and further the durability of the solid-state battery to be improved. A solid-state battery (10) includes a positive electrode layer (3) containing a positive electrode active material, a negative electrode layer (2) containing a negative electrode active material, and a solid electrolyte (1) interposed between the positive electrode layer (3) and the negative electrode layer (2). The solid electrolyte (1) includes a positive electrode-side electrolyte layer (1a) in contact with the positive electrode layer (3) and a negative electrode-side electrolyte layer (1b) in contact with the negative electrode layer (2). In the solid electrolyte (1), an area SSE2 of the positive electrode side of the positive electrode-side electrolyte layer (1a) differs from an area SSE1 of the negative electrode side of the negative electrode-side electrolyte layer (1b).

Abstract: To provide a solid-state battery module and a separator which can apply sufficient surface pressure to a solid-state battery cell and are excellent in durability and vibration resistance. A separator (120) disposed between adjacent solid-state battery cells (101) in a solid-state battery module (100) including a plurality of solid-state battery cells (101) to electrically insulate the adjacent solid-state battery cells (101) of the plurality of solid-state battery cells (101), from each other. The separator (120) includes elastically deformable elastic members (123a, 123b) which apply biasing force in the stacking directions of the plurality of solid-state battery cells (101). Durability and vibration resistance can be obtained by adequately fixing the solid-state battery cells (101) with the elastic members (123a, 123b).

Abstract: Provided is a battery pack having excellent energy density and durability. A battery pack 100 includes solid-state battery modules 102 each configured such that a plurality of solid-state battery cells containing a solid electrolyte is stacked and electrolytic solution-based battery modules 32 each configured such that a plurality of electrolytic solution-based battery cells containing an electrolytic solution is stacked, the solid-state battery modules 102 and the electrolytic solution-based battery modules 32 being combined and housed in the pack. The solid-state battery modules 102 are arranged to surround the electrolytic solution-based battery modules 32.

Abstract: To provide a solid-state battery capable of applying an initial load that results in sufficient surface pressure to a battery cell, and a method for making the solid-state battery. A pressing part is provided in the solid-state battery case and the force of the spring is utilized, and a gas vent port is provided to replace gas or perform depressurization. Specifically, a solid-state battery including a solid-state battery cell and a battery case that houses the solid-state battery cell, is provided. A pressing part that applies surface pressure to the solid-state battery cell is formed on a surface constituting the battery case that is substantially perpendicular to the laminating direction of a laminate constituting the solid-state battery cell, and at least one gas vent port is formed in the battery case.

Abstract: Provided are: a current collector tab for solid-state batteries that minimizes the occurrence of cracks in an electrode active material and that makes it possible to minimize peeling within an electrode sheet or interlayer peeling in a layered body of an electrode and a solid electrolyte; a current collector; and an electrode sheet. A stress relaxation section is provided to a current collector tab for a positive electrode sheet or a negative electrode sheet. Specifically, the current collector tab for solid-state batteries comprises a stress relaxation section in a bent area occurring when a plurality of the current collector tabs are bundled in a solid-state battery cell.