Abstract: A battery of the present disclosure has: an electrode body that is flat and is configured by a positive electrode and negative electrode layered alternately via a separator; an exterior body; a positive electrode tab projecting from the exterior body in a first direction that is orthogonal; and a negative electrode tab projecting from the exterior body in the first direction or in an opposite direction to the first direction. The exterior body has at least one laminate sheet. The electrode body has, at both edge portions in a second direction that is orthogonal to the thickness direction and to the first direction, non-contact portions at which the positive electrode and the negative electrode do not contact the separator. The exterior body has welded portions at which portions of the laminate sheet are welded together via at least portions of the non-contact portions.

Abstract: The laminated battery has an electrode body and a laminate film encapsulating the electrode body, and the laminate film has a fused portion in which end parts are overlapped and an inner surface is fused, and the fused portion has two bent parts bent in an angular shape or an arcuate shape so as to have an angle of 90° or less, and a roll part arranged closer to the front end side of the fused portion than the bent parts at 2 places and rounded in a roll shape.

Abstract: In the cell case of the power storage cell according to the present disclosure, the cylindrical main body portion is formed by forming a film into a cylindrical shape, and the first opening portion and the second opening portion are formed at both ends thereof, respectively. The first sealing body closes the first opening portion. The second sealing body closes the second opening portion. The first sealing body includes an outer peripheral face that is in contact with an inner peripheral face of the cylindrical main body portion. The outer peripheral face includes a main body surface portion and a protruding portion. The main body surface portion extends in parallel to a first direction in which the first opening portion and the second opening portion are arrayed. The protruding portion protrudes from the main body surface portion toward the cylindrical main body portion.

Abstract: A power storage module has a case including a case body and at least one partition portion. The case body surrounds a plurality of electrode assemblies. The partition portion is located between the electrode assemblies adjacent to each other to partition an accommodation space of the case body. In the accommodation space of the case body, the partition portion forms a first compartment and a second compartment adjacent to the first compartment with the partition portion interposed between the first compartment and the second compartment. A first cooling path and a second cooling path are formed in the case, the first cooling path extends in a portion 10 of the case that faces the first compartment without the second compartment in between, and the second cooling path extends in a portion of the case that faces the second compartment without the first compartment in between.

Abstract: A power storage module includes a case that houses a plurality of electrode assemblies. The case includes a case body and at least one partition portion. The case body surrounds the plurality of electrode assemblies. The partition portion is located between the electrode assemblies adjacent to each other to partition an accommodation space of the case body. The partition portion includes a pair of resin layers and a metal layer. The pair of resin layers is formed integrally with the case body and the resin layers are arranged in a first direction. The metal layer is located between the resin layers and extends in a direction orthogonal to the first direction.

Abstract: The laminated battery includes an electrode body and a laminate film enclosing the electrode body. The laminate film has a structure in which a metal layer and a fusion resin layer are at least laminated on the inside of the metal layer. The laminate film has a fused portion in which the fusion resin layers of the inner surface are fused by overlapping end portions, a portion of the fused portion, the metal layers to each other has a metal adhesion portion that is in close contact over the entire area in the longitudinal direction of the fused portion.

Abstract: A method of manufacturing a battery case includes: preparing a tubular body having a first opening end and a second opening end that are respectively located at opposite sides in one direction; closing the first opening end with a first plate member; closing the second opening end with a second plate member; in a state where the first opening end is closed with the first plate member and the second opening end is closed with the second plate member, cutting the tubular body, the first plate member, and the second plate member along a plane parallel to the one direction, to obtain a case body having an opening formed by respective cut edges of the tubular body, the first plate member, and the second plate member; and closing the opening of the case body with the lid portion.

Abstract: A power storage module includes a plurality of power storage cells, a module case, and a connection member. The plurality of power storage cells each include an electrode assembly, a cell case, and an external terminal. The external terminal is electrically connected to the electrode assembly, located outside the cell case, and disposed at a side of the cell case in a second direction orthogonal to a first direction. The module case includes a bottom surface portion and a peripheral side surface portion. The connection member is in contact with the external terminal of each of power storage cells adjacent to each other, among the plurality of power storage cells. At least a part of the connection member is embedded in the peripheral side surface portion.

Abstract: In a secondary battery, a main body of a housing includes a bottom surface portion, a first side surface portion, a second side surface portion, a first top surface portion, a second top surface portion, and a weld. The first top surface portion extends toward the second side surface portion, from an end of the first side surface portion opposite to the bottom surface portion. The second top surface portion extends toward the first side surface portion, from an end of the second side surface portion opposite to the bottom surface portion. The weld connects respective leading ends of the first top surface portion and the second top surface portion to each other.

Abstract: In a secondary battery, a first end face portion extends toward a second side surface portion, from one end of a first side surface portion in the width direction. A second end face portion extends toward a first side surface portion, from one end of the second side surface portion in the width direction. An end face weld connects respective leading ends of the first and second end face portions to each other. The leading end of the first end face portion is located closer to a center of the housing in the width direction, than a joint at which it is connected to the first side surface portion. The leading end of the second end face portion is located closer to the center of the housing in the width direction, than a joint at which it is connected to the second side surface portion.

Abstract: In an accommodation space of a case body of a power storage module, a partition portion forms a first and second compartments adjacent to the first compartment with the partition portion interposed between the first and second compartments. A connection conductive member has a first end portion located at one side in the first direction and embedded in the case body. A second end portion of the connection conductive member is located at the other side in the first direction and embedded in the case body. A first inner surface portion thereof is exposed to the first compartment and electrically connected to a first electrode assembly contained in the first compartment, among a plurality of electrode assemblies. A second inner surface portion thereof is exposed to the second compartment and electrically connected to a second electrode assembly contained in the second compartment, among the plurality of electrode assemblies.

Abstract: A power storage module includes a plurality of electrode assemblies and a case. The case includes a bottom portion, a peripheral sidewall portion, a lid portion, and at least one partition portion. The bottom portion is located at one side of the electrode assemblies in a second direction. The partition portion is formed integrally with the bottom portion and the peripheral sidewall portion. The partition portion is located between the electrode assemblies adjacent to each other. Each of the bottom portion, the peripheral sidewall portion, and the lid portion includes a resin layer and a barrier layer. The resin layer is made from a resin composition. The barrier layer is superposed on the resin layer. The barrier layer has a lower moisture permeability than that of the resin layer.

Abstract: In a power storage cell, a case includes a bottom portion, first and second side surface portions, first and second end face portions, a welding portion, and a rib. The first side surface portion extends upright from the bottom portion. The second side surface portion extends upright from the bottom portion and faces the first side surface portion. The first end face portion extends from the first side surface portion in a direction in which the first side surface portion faces the second side surface portion. The second end face portion extends from the second side surface portion in a direction in which the second side surface portion faces the first side surface portion. The welding portion connects the first and second end face portions to each other. The rib is located along a corner edge formed by the first side surface portion and the first end face portion.

Abstract: A power storage cell includes an electrode assembly, a cell case, and an external terminal. The cell case houses the electrode assembly. The external terminal is fixed to the cell case. The external terminal includes a first terminal portion and a second terminal portion. The first terminal portion is arranged above the cell case. The second terminal portion extends from the first terminal portion along the side surface of the cell case. The second terminal portion is provided with a recess. The recess is formed on a surface of the second terminal portion opposite to the other surface thereof that faces the cell case.

Abstract: A laminated battery of the present disclosure is a laminated battery. The laminated battery has: an electrode body; side surface members disposed at side surfaces of the electrode body; a laminate sheet covering the electrode body; and tab films disposed between the side surface members and the laminate sheet. The side surface members and the laminate sheet are welded via the tab films. The tab films have inner side excess resin portions that project out from ends, which are at electrode body sides, of the side surface members.

Abstract: A power storage cell includes: an electrode assembly; a cell case; and an external terminal. The cell case has a case main body and a lid. The lid has a lid main body charged positively or negatively, an inversion plate that is able to short-circuit the lid main body and the external terminal, and a protrusion protruding from the inversion plate toward the external terminal. The inversion plate is deformable between a steady-state shape and an inversion shape, the steady-state shape being a shape curved to project in a direction away from the external terminal, the inversion shape being a shape curved to project toward the external terminal with the inversion plate being in contact with the external terminal. The external terminal has a holding portion that holds the protrusion when the inversion plate is in the inversion shape.

Abstract: A laminated battery has a battery element and a laminate exterior body that seals the battery element. The laminate exterior body includes at least a resin layer and a metal layer that are laminated. The battery element includes substantially right-angled portions, and horizontal portions that are horizontal shaped. At 80% or more of areas of the metal layer that face the substantially right-angled portions of the battery element, a thickness T1 of the metal layer, with respect to a thickness T2 of the metal layer of the laminate exterior body that faces the horizontal portions of the battery element, satisfies a relationship of formula |T1?T2|/T2×100(%)?10%.

Abstract: A power storage cell includes: an electrode assembly constituted of a wound body in which a plurality of positive electrode tabs and a plurality of negative electrode tabs are wound to protrude upward; a cell case; and an insulating member. The cell case has a case main body and a lid. The insulating member has a covering portion that covers an upper surface of the electrode assembly, and the covering portion has a holding portion that holds an electrolyte solution leaked from the electrode assembly.

Abstract: An apparatus for manufacturing a secondary battery includes: a conveying section that conveys a laminate-type secondary battery having a laminate outer package; plural contact rollers provided on a conveying path of the conveying section, the plural contact rollers having different contact angles with respect to an edge seal part of the laminate outer package being conveyed; and opposition rollers respectively disposed in opposition to the contact rollers, which, together with the contact rollers, fold the edge seal part of the laminate outer package.

Abstract: A power storage cell includes an electrode assembly, a cell case, and an external terminal. The cell case has a case main body and a lid. The lid has a lid main body, and an inversion plate that is able to short-circuit the lid main body and the external terminal. The inversion plate has: a base portion; an inversion portion connected to inside of the base portion, the inversion portion being able to come into contact with the external terminal; and a low-elastic member made of a conductive material having an elastic modulus smaller than an elastic modulus of the inversion portion, the low-elastic member being provided on a surface of the inversion portion facing the external terminal. The low-elastic member is elastically deformed with the low-elastic member being sandwiched between the inversion portion and the external terminal when the inversion portion is inverted.