Abstract: An object is to provide a battery module with higher energy density. A battery module includes a plurality of battery cells each including a layered body and an exterior body, in which a first periphery of each of any general battery cells arranged in a layered direction of the layered bodies includes a first bend that is coupled to a first bottom surface formed on a circumference of the exterior body and that bends toward one side in the layered direction, and a first extension extending from the first bend toward the one side in the layered direction, and the first extension includes a first region extending from the first bend to another end in the layered direction of the next battery cell, and a second region extending from the other end in the layered direction of the next battery cell toward the one side in the layered direction.

Abstract: To provide a secondary battery comprising an electrode laminate and an exterior packaging member, the electrode laminate being wrapped with the exterior packaging member, wherein the exterior packaging member comprises an exterior packaging area that wraps the electrode laminate, a heat-sealing area, and an intermediate area existing between the exterior packaging area and the heat-sealing area; in the exterior packaging area, a layer containing a first resin, a layer containing a second resin, a layer containing metal, and a layer containing a third resin are sequentially laminated from an electrode laminate side; in the heat-sealing area the layer containing metal and the layer containing the third resin are sequentially laminated on both sides of the layer containing the second resin; and in the intermediate area, a resin pool comprising the first resin is formed.

Abstract: There is provided with a battery module capable of improving cooling and heating efficiency of a battery. The battery module comprises: a plurality of secondary batteries; a cooling and heating unit configured to cool or heat the secondary batteries; and a heat transfer member disposed between the secondary batteries and the cooling and heating unit, a highly viscous fluid in contact with the secondary batteries and an intermediate member in contact with and holding the highly viscous fluid are arranged between the secondary batteries and the heat transfer member.

Abstract: Provided is a battery module including: a battery cell multilayer including a plurality of battery cells that are stacked together; a pair of plate-shaped members provided at both ends of the battery cell multilayer in the stacking direction; a cushioning material sandwiched between the battery cells and/or between the battery cell and the plate-shaped member, the cushioning material including a viscoelastic material; and a displacement tolerant portion tolerant of a displacement of the cushioning material to the outside of the battery cell multilayer.

Abstract: There is provided with a secondary battery having improved cooling and heating efficiency. The secondary battery comprises a laminate in which a positive electrode layer, an electrolyte layer, and a negative electrode layer are stacked, and an exterior body wrapping the laminate, the exterior body is formed by folding back one material for forming the exterior body at a folding back portion, the exterior body includes a housing portion which includes the folding back portion as a part thereof, and houses the laminate, and a peripheral edge portion around the housing portion, the peripheral edge portion includes a folding portion folded along the housing portion, and in the folding portion, the materials are not bonded to each other on a bent portion, and the materials are bonded to each other at portions other than the bent portion.

Abstract: A method for manufacturing a battery module including a plurality of solid-state battery cells includes a cell arrangement step of arranging the plurality of solid-state battery cells in a manner of being not in contact with one another in a laminate direction, and restraining the plurality of solid-state battery cells by a restraining member including a fixing portion configured to fix each of the solid-state battery cells, a filling step of filling a space between the solid-state battery cells among the plurality of solid-state battery cells arranged in the laminate direction with a foamable material, and a foaming step of foaming the filled foamable material.

Abstract: The present invention provides a piping unit that facilitates downsizing of a cooler by decreasing the temperature of fluid to be introduced into the cooler without reducing the cooling effect of a cooler. A piping unit is for introduction of heated fluid into a cooler, the piping unit being formed from synthetic resin and including a heat exchange structure on an inner peripheral surface.