Provided is a cartridge frame which is inserted between a plurality of unit battery cells stacked in the fabrication of a modularized battery and a battery module having the same. The cartridge frame according to one aspect of the present disclosure includes an inter-cell separation plate with a planar shape inserted between adjacent unit battery cells to separate the adjacent unit battery cells, and a sidewall part extending in a direction perpendicular to the planar surface of the inter-cell separation plate at an edge other than an edge of a direction in which an electrode terminal of the battery cell is drawn, among edges of the inter-cell separation plate, wherein for at least a portion of the sidewall part, an inner sidewall coming into contact with a side surface of the unit battery cell is made from metal, and an outer sidewall facing the inner sidewall is made from plastic.

Provided is a bi-polar electrode for a battery, wherein the bi-polar electrode comprises: (a) a current collector comprising a conductive material foil (e.g. metal foil) having a thickness from 10 nm to 100 μm and two opposed, parallel primary surfaces, wherein one or both of the primary surfaces is coated with a layer of graphene material having a thickness from 10 nm to 10 μm; and (b) a negative electrode layer and a positive electrode layer respectively disposed on the two sides of the current collector, each in physical contact with the layer of graphene material or directly with a primary surface of the conductive material foil (if not coated with a graphene material layer). Also provided is a battery comprising multiple (e.g. 2-300) bipolar electrodes internally connected in series. There can be multiple bi-polar electrodes that are connected in parallel.

This electricity storage device is provided with an electrode assembly. The electrode assembly is constructed by laminating two electrodes of different polarities and a separator disposed between the electrodes with the electrodes being insulated from each other. Each of the electrodes has a metal foil and active material layers that are formed by coating an active material on the metal foil in a coating direction. The elongation rate of the separator varies in different directions, and the separator has a direction in which the elongation rate is higher than in the other directions. The higher elongation rate direction of the separator intersects the coating direction of the active material on at least one of the electrodes.

This separator is provided with a resin substrate, a first heat-resistant layer that covers the entirety of one surface of the resin substrate, a second heat-resistant layer that covers a portion of the other surface of the resin substrate, and an uncovered region that is in the other surface of the resin substrate and that is not covered by the second heat-resistant layer, wherein the first heat-resistant layer and the second heat-resistant layer each include inorganic particles and a binder. In each of the heat-resistant layers, the contained amount of the inorganic particles is 50-90 mass %, the contained amount of the binder is 10-50 mass %, and the uncovered region is connected to the end portion of the resin substrate.

Discussed is an apparatus for manufacturing a cell, the apparatus including: a center electrode reel from which a center electrode is to be unwound; a first heater configured to apply radiant heat to the unwound center electrode; an upper separator reel from which an upper separator to be laminated on a top surface of the center electrode is to be unwound; a lower separator reel from which a lower separator to be laminated on a bottom surface of the center electrode is to be unwound; an upper electrode reel from which an upper electrode to be laminated on a top surface of the upper separator is to be unwound; and a second heater configured to apply radiant heat to the unwound upper electrode.

A power storage device that includes a first adhesive member between a first current collector and a second surface layer, and a second adhesive member between a second current collector and a first surface layer. A first electrolyte retaining layer is provided between the first adhesive member and the first current collector. A second electrolyte retaining layer is provided between the second adhesive member and the second current collector.

A battery includes a shell, a core received in the shell and having first and second electrode tabs, and first and second protection components. Each of the first and second protection components includes two insulating layers and a conducting layer disposed between two insulating layers. The conducting layer of the first protection component defines a first end electrically connected to the first electrode tab and a second end configured as a free end. The conducting layer of the second protection component defines a first end electrically connected to the second electrode tab and a second end configured as a free end.

A secondary battery and a method for manufacturing the same are provided. An electrode assembly accommodated in the secondary battery having various shapes is manufactured. In particular, a method for manufacturing a secondary battery includes an electrode stack preparation step of preparing an electrode stack which includes a first unit cell having a first area and a second unit cell having a second area that is less than the first area, and which has a structure in which the second unit cell is disposed on one surface of the first unit cell. The method further includes a curved surface formation step of pressing at least a part of an independent portion, which does not overlap the second unit cell, of the first unit cell to form a curved surface on the at least the part of the independent portion.

Disclosed are a secondary battery, a battery module and an electric vehicle. The battery module includes a plurality of secondary batteries arranged in sequence. The secondary battery includes an electrode assembly, a housing and a top cover assembly. The electrode assembly is accommodated in an accommodating chamber of the housing. The electrode assembly includes a plurality of electrode units, the plurality of electrode units being stacked in an axial direction of the accommodating chamber. The top cover assembly includes a top cover plate and an insulating member arranged on an inner side of the top cover plate, the top cover plate being connected to the housing, the insulating member being located on a side of the electrode assembly in the axial direction. A first buffer gap is provided between the insulating member and the top cover plate.

An all-solid-state battery configured to suppress capacity degradation. The all-solid-state battery may comprise a stack of a cathode layer, a solid electrolyte layer and an alloy-based anode layer, and a confining structure confining the stack in an approximately parallel direction to a stacking direction, wherein the cathode layer has a cathode plane on a side facing the solid electrolyte layer; wherein the alloy-based anode layer has an anode plane on a side facing the solid electrolyte layer; wherein the cathode plane and anode plane of the stack have a long axis direction and a short axis direction; and wherein at least one of the cathode plane and the anode plane has one or more slit channels.