Abstract: To prevent the breakage of a bonding portion when current collector tabs are converged and bonded, and thereby maintain a current path. A plurality of electrode current collectors each including a metal porous body, a plurality of tabs each extending from an end of the metal porous body of each of the electrode current collectors, and a connecting tab lead that electrically connects the tabs, are included. The connecting tab lead is cross-bonded with each of the tabs to form a first compression bonding portion, and is further folded from a first of the tabs to a second of the tabs, for example, the connecting tab lead is arranged in a bellows shape. At a tab convergence location where the first compression bonding portions are stacked, the tabs are converged by forming a second compression bonding portion by ultrasonic waves or other means.

Abstract: To provide a current collecting structure capable of reliably collecting current while maintaining a pressurized and constrained state of a coin-type all-solid-state battery. A coin-type all-solid-state battery includes a solid electrolyte layer; a pair of first electrode current collectors each including a metal porous body, the first electrode current collectors being respectively disposed on both sides of the solid electrolyte layer; a pair of second electrode current collectors each including a metal porous body, the second electrode current collectors being respectively disposed on outer sides of the first electrode current collectors; and a pair of lid members being respectively disposed on outer sides of the pair of second electrode current collectors.

Abstract: To secure ionic conductivity by improving the adhesion between an electrode material mixture and a solid electrolyte and suppressing electrodeposition of lithium. A lithium ion secondary battery (100) includes a positive electrode including an electrode material mixture that fills pores of a metal porous body constituting an electrode current collector, a first solid electrolyte layer including a solid electrolyte that fills pores of a resin porous body, and a negative electrode including an electrode material mixture that fills pores of a metal porous body constituting an electrode current collector. The positive electrode and the negative electrode are alternately stacked with the first solid electrolyte layer provided therebetween.

Abstract: A solid-state battery includes: a solid-state battery cell Including a laminate having at least one positive electrode having a positive electrode current collector and a positive electrode active material layer, at least one negative electrode having a negative electrode current collector and a negative electrode active material layer, and a solid-state electrolyte interposed between the positive electrode and the negative electrode, and a first elastic member arranged at least on both sides of the laminate in a laminating direction; and a resin casing made of a thermosetting resin or a thermoplastic resin and which closely adheres to and covers the solid-state battery cell.

Abstract: To provide a solid-state battery capable of achieving high capacity. A solid-state battery including a multilayer body including a stack of a plurality of electrode layers including positive electrode layers and negative electrode layers and solid electrolyte layers each disposed between the electrode layers, the multilayer body having a columnar shape; and the solid-state battery including a positive electrode terminal and a negative electrode terminal disposed at both end portions of the multilayer body; a positive electrode tab electrically connected to the positive electrode layer and the positive electrode terminal; and a negative electrode tab electrically connected to the negative electrode layer and the negative electrode terminal, wherein the positive electrode tab and the negative electrode tab are spirally wound on an outer peripheral surface of the multilayer body.

Abstract: To improve the adhesion between an electrode material mixture and a solid electrolyte, and thereby suppress electrodeposition of lithium. This electrode includes a planar electrode current collector including a metal porous body, an electrode material mixture layer that fills pores of the metal porous body, and a solid electrolyte layer that fills pores of the metal porous body. The electrode material mixture layer is formed on one side of the electrode current collector, and the solid electrolyte layer is formed on the other side of the electrode current collector. The electrode material mixture layer and the solid electrolyte layer are stacked in a planar shape in the pores of the metal porous body.

Abstract: To provide an electrode for a lithium ion secondary battery that can improve the diffusivity of lithium ions in an electrode material mixture when a metal porous body is used as a current collector, thereby improving the output characteristics and durability of the battery. A positive electrode 1 and a negative electrode 2, which are electrodes, respectively include a current collector 11 and a current collector 21 each including a metal porous body having communicating pores V, and an electrode material mixture 13 and an electrode material mixture 23, with which at least the pores V of the metal porous body are filled. At least an electrode active material and ionic conductor particles are dispersed in the electrode material mixtures 13 and 23. The ionic conductor particles are preferably oxide solid electrolyte particles.

Abstract: A secondary battery electrode includes: a current collector made of a porous metal material; and an electrode material mixture with which the current collector is filled. The current collector includes a material mixture-filled segment that is filled with the electrode material mixture, and a material mixture-unfilled segment that is unfilled with the electrode material mixture. The material mixture-unfilled segment includes a current-collecting tab which is thinner than the material mixture-filled segment and in which the porous metal material is present at a higher density than in the material mixture-filled segment, and a tab convergence portion via which the material mixture-filled segment is coupled to the current-collecting tab. The tab convergence portion is provided with at least one rib extending from a side adjacent to the material mixture-filled segment toward the current-collecting tab.

Abstract: To provide a solid-state battery that can improve layout by allowing a current collecting position to be optionally disposed and that can suppress the occurrence of short circuits. A solid-state battery includes a positive electrode, a negative electrode, and a solid electrolyte layer disposed between the positive electrode and the negative electrode. A first electrode selected from one of the positive electrode and the negative electrode includes a material mixture filled portion including a metal porous body filled with an electrode material mixture. The solid electrolyte layer is disposed so as to cover a periphery of the material mixture filled portion. A second electrode selected from the other of the positive electrode and the negative electrode is disposed so as to cover the solid electrolyte layer.

Abstract: To provide a lithium ion secondary battery that allows the cell state to be monitored by arranging a reference electrode, even in a solid-state battery. In a lithium ion secondary battery 50, a positive electrode 1, a reference electrode 3, and a negative electrode 2 are arranged in this sequence. The positive electrode 1 includes a first current collector 11 including a metal porous body, and a first electrode material mixture 15 with which pores of the first current collector 11 are filled. The negative electrode 2 includes a second current collector 21 including a metal porous body, and a second electrode material mixture 25 with which pores of the second current collector 21 are filled. The reference electrode 3 includes a third current collector 31 including a metal porous body, and a solid electrolyte 35 with which pores of the third current collector 31 are filled.

Abstract: Provided are an electrode for lithium ion secondary batteries which can prevent cracking of the electrode, and a lithium ion secondary battery made using the same. An electrode (1, 2) for a lithium ion secondary battery (100) includes a collector (10, 20) of a metal porous body having a predetermined thickness, and having a corner of at least one location in a stereoscopic view; and an electrode mixture (18, 28) filled into these pores. The collector has a mixture filled region (11, 21) in which the electrode mixture is filled, and a mixture non-filled region (15, 25) in which the electrode mixture is not filled, or a high modulus filler having smaller elastic modulus than the electrode mixture is filled, existing at a corner of the collector.

Abstract: To provide a solid-state battery in which the capacity and voltage can be optionally adjusted in a single battery and the installation space for the battery can be reduced. A solid-state battery includes a plurality of electrode layers, and a solid electrolyte layer disposed between the electrode layers. The electrode layers includes positive electrode portion formed by filling a current collector including a metal porous body with a positive electrode material mixture, negative electrode portion formed by filling a current collector including a metal porous body with a negative electrode material mixture, and an isolation portion formed between the positive electrode portion and the negative electrode portion. Between the plurality of electrode layers disposed adjacent to each other, the positive electrode portion and the negative electrode portion are disposed so as to face each other, and the isolation portions are disposed so as to face each other.

Abstract: To provide a solid-state battery capable of achieving a higher capacity. A solid-state battery includes a positive electrode and a negative electrode. The positive electrode and the negative electrode each includes a current collector that is a metal porous body having a spiral shape, and an electrode material mixture with which the current collector is filled. The positive electrode and the negative electrode are arranged in combination such that opposing faces of the positive electrode and the negative electrode alternately contact each other in an axial direction of the spiral shape. A pair of the positive electrode and the negative electrode having the above structure are housed in an exterior packaging body having a cylindrical shape to achieve a higher capacity of the solid-state battery.

Abstract: To provide a solid-state battery having high safety and high energy density. An electrode for a solid-state battery includes a current collector that is a metal porous body, and an electrode material mixture with which the current collector is filled. The current collector has an end portion having a material mixture non-filled region that is not filled with the electrode material mixture. The material mixture non-filled region has a part that is a fuse function portion. The fuse function portion has a smaller total cross-sectional area of metal in a cross section perpendicular to a direction of the end portion than the rest of the material mixture non-filled region.

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: 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 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: 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.