A main object of the present disclosure is to provide a method for producing a layered battery with which a layered battery with high structural reliability can be produced. The present disclosure achieves the object by providing the method including: a preparing step of preparing an electrode layered body including a plurality of electrode layered in a z axis direction; an arranging step of arranging a liquid injection frame made of a resin including a liquid injection port, in a side surface of the electrode layered body; a liquid injection step of injecting a liquid electrolyte into the electrode layered body from the liquid injection port of the liquid injection frame; a first sealing step of sealing the liquid injection port by arranging a first member including a resin layer A on a surface of the liquid injection frame, of which normal direction is an x axis direction orthogonal to the z axis direction, after the liquid injection step; a battery treatment step of performing at least one of charging and aging after the first sealing step; a penetration hole forming step of forming a penetration hole communicating the liquid injection port in the first member after the battery treatment step; and a second sealing step of sealing the liquid injection port while covering the penetration hole by using a second member including a resin layer B and a metal layer, and arranging the resin layer B in the second member on a surface of the first member of which normal direction is the x axis direction.

A battery includes positive and negative current collectors and a plurality of bipolar electrodes arranged in a stack between the positive and negative current collectors. The positive and negative current collectors and the stack of the plurality of bipolar electrodes are folded in an S-shape.

A power storage module comprises a plurality of bipolar electrodes, an outermost positive electrode, an outermost negative electrode, a first sealing part, a second sealing part, an inner sealing part, a first insulating member, a second insulating member, and an inner insulating member. At a periphery of each positive electrode current-collecting foil, a positive-electrode-free portion is formed, and at a periphery of each negative electrode current-collecting foil, a negative-electrode-free portion is formed. The first insulating member includes a first outer insulating part, the second insulating member includes a second outer insulating part, and the inner insulating member includes an inner insulating part. Each of a thickness of the first outer insulating part and a thickness of the second outer insulating part is more than a thickness of the inner insulating part.

A battery includes first and second power generating elements laminated to each other. In the first power generating element, the inner layer of a first electrode current collector is in contact with a first electrode active material layer. In the second power generating element, the inner layer of a second electrode current collector is in contact with a second electrode active material layer. The outer layers of the first electrode current collector and the second electrode current collector are in contact with each other. The inner layer of the first electrode current collector contains a first material; the inner layer of the second electrode current collector contains a third material different from the first material; the outer layer of the second electrode current collector contains a second material different from the first material; and the outer layer of the first electrode current collector contains the second material.

Disclosed herein is a stacked/folded type electrode assembly configured to have a structure in which a plurality of unit cells, each of which includes a positive electrode having an electrode mixture including an electrode active material applied to a current collector, a negative electrode having an electrode mixture including an electrode active material applied to a current collector, and a separator disposed between the positive electrode and the negative electrode, is wound in the state of being arranged on a sheet type separation film, wherein the unit cells include one full cell and three or more bi-cells, the outermost unit cells of the electrode assembly are each configured such that an electrode forming the outside of the electrode assembly is configured as a single-sided electrode, in which no electrode mixture is applied to the surface of the current collector facing the outside of the electrode assembly, and the single-sided electrodes are electrodes having the same polarity.

A bipolar battery including a) one or more stacks of battery plates assembled into electrochemical cells having i) one or more bipolar plates and ii) a first and second monopolar plate; b) a liquid electrolyte disposed between each pair of battery plates, wherein the liquid electrolyte functions with an anode and cathode pair to form an electrochemical cell; c) a separator located between the anode and the cathode of the electrochemical cell; and d) a membrane comprising a polymeric material disposed about an entire periphery of edges of the one or more stacks of battery plates so as to form a seal about the periphery of the edge of the battery plates, and wherein the seal prevents the liquid electrolyte from flowing outside of the one or more stacks of battery plates.

A secondary battery system and a secondary battery control method, wherein the system and the method include a plurality of unit cells connected in series, and a recovery charging controller that performs recovery charging of charging the plurality of unit cells while generating a micro short-circuit in at least one of the plurality of unit cells by charging the plurality of unit cells at a predetermined recovery charging current value which is higher than a upper limit current value during normal charging, wherein the unit cells are all-solid-state lithium secondary battery unit cells.

A battery includes first and second power generating elements laminated to each other. In the first power generating element, the inner layer of a first electrode current collector is in contact with a first electrode active material layer. In the second power generating element, the inner layer of a second electrode current collector is in contact with a second electrode active material layer. The outer layers of the first electrode current collector and the second electrode current collector are in contact with each other. The inner layer of the first electrode current collector contains a first material; the inner layer of the second electrode current collector contains a third material different from the first material; the outer layer of the second electrode current collector contains a second material different from the first material; and the outer layer of the first electrode current collector contains the second material.

A method for reusing components of a battery (used battery assembly), such as a bipolar battery, to form another battery (reused battery assembly). The method may find use in allowing for a battery to be used, disassembled, recycled or reprocessed, assembled, and reused all within a single facility. A method for preparing a reused battery assembly including: a) disassembling a used battery assembly; b) salvaging one or more used components from the used battery assembly to provide for one or more reused components; and c) assembling a reused battery assembly with the one or more reused components.

Disclosed is a bipolar battery with which thermal deterioration of the electrode body due to the generation of heat of tabs can be suppressed. The bipolar battery of the present disclosure includes a first member, a second member, and a laminate electrode body arranged therebetween, wherein the laminate electrode body includes a first current collector constituting a lamination direction end surface, a second current collector constituting the other lamination direction end surface, at least one bipolar current collector arranged between the first current collector and the second current collector, and a plurality of power generating elements which are electrically connected in series via the bipolar current collector between the first current collector and the second current collector, the first current collector is arranged between the first member and the bipolar current collector, the second current collector is arranged between the second member and the bipolar current collector, the first current collector has a first tab, the second current collector has a second tab, an amount of heat generated by the first tab during energization of the battery is greater than an amount of heat generated by the second tab, the first member is a cooling member for cooling the first current collector, and a cooling performance of the first member is greater than a cooling performance of the second member.