An electrochemical battery can include electrodes (a cathode and an electrode) arranged on respective surfaces of an electrolyte. The electrodes and electrolyte can each be solid state films that can be layered on top of one another to create a stacked structure disposed on a substrate. A polymeric sealant material can be applied over and around the battery stack and a moisture barrier can be formed over the sealant material to thereby prevent moisture from reaching the battery. Conductive terminals electrically coupled to the cathode and anode, respectively, can be formed on a second side of the substrate. As such, the battery can be flip-chip mounted to corresponding mounting pads and thereby connected to other electronics that can receive power from the battery.

A battery pack includes at least one battery module, a housing accommodating the at least one battery module therein, a controller to control the at least one battery module, a partition positioned between the controller and the at least one battery module, and a connector at least partially passing through the partition, the connector electrically connecting the at least one battery module with the controller.

A flexible electrochemical device in which a plurality of electrode assemblies is electrically connected to each other so that the flexible electrochemical device may be repeatedly bent, includes at least two electrode assemblies that are arranged separate from each other and a casing member that packs the at least two electrode assemblies and includes at least two accommodation portions in which electrode assemblies are individually received, and a connecting portion that connects the at least two adjacent accommodation portions where a path between a conductive line that electrically connects at least two electrode assemblies together and an electrolyte is defined in the connecting portion.

The present invention relates to a battery package attached to an external substrate, which includes an electronic circuit and a power terminal electrically connected to the electronic circuit, to supply power to the electronic circuit, or to accumulate energy by collecting power. A battery package, according to an exemplary embodiment, comprises: a battery unit that has one or more secondary battery cells and leads that are connected to the secondary battery cells and exposed; a flexible encapsulation body that accommodates the battery unit therein; exposed electrodes that are exposed on the surface of the flexible encapsulation body and are electrically connected to the leads to electrically connect to the electronic circuit; and a first Velcro part mounted on the surface of the flexible encapsulation body.

A method of sealing together two elements of a bipolar battery, the method comprising: interposing an inductive heating element between the two elements; applying a current to the inductive heating element to generate localized heat to melt material in the vicinity of the heating element to seal the two elements together.

Provided is a method for manufacturing a sealed battery, capable of reducing an erroneous determination rate in a leak testing step. The method including the leak testing step for detecting leak of a detection gas introduced into a battery case, includes: an introducing step for introducing the detection gas into the battery case which is temporarily sealed by covering the battery case; and an adjusting step for adjusting at least one of the pressure inside the battery case temporarily sealed and the pressure outside the battery case so that the pressure inside the battery case into which the detection gas has been introduced is lower than the pressure outside the battery case.

Provided is a nonaqueous electrolyte secondary battery including a bottomed cylindrical positive electrode casing, and a negative electrode casing which is fixed to an opening of the positive electrode casing through a gasket. The opening of the positive electrode casing is caulked to the negative electrode casing side to seal an accommodation space. A caulking tip end in the opening of the positive electrode casing is disposed in an inward direction of the negative electrode casing than a tip end of the negative electrode casing. A diameter d of the nonaqueous electrolyte secondary battery is in a range of 4 mm to 12 mm, a height h1 of the nonaqueous electrolyte secondary battery is in a range of 1 mm to 3 mm, a side surface portion of the positive electrode casing is formed in a curved surface shape, a radius of curvature R is set in a range of 0.8 mm to 1.1 mm, and a height h2 of the positive electrode casing is in a range of 65% to 90% with respect to the height h1 of the nonaqueous electrolyte secondary battery.

A pouched energy storage device can include a cell housing portion and a sealed portion. The device can also include a stack of electrodes housed within an inner region of the cell housing portion. Each electrode can have dimensions of width, length, and thickness. One or more electrodes can have at least one of the dimensions smaller than a corresponding dimension of other electrodes in the stack of electrodes. The device can also include an indentation on the cell housing portion adjacent the sealed portion. The indentation can form a stepped region in the inner region that is complimentary to the one or more electrodes having at least one of the dimensions smaller than a corresponding dimension of other electrodes in the stack of electrodes. The sealed portion can be folded onto the cell housing portion so that at least a part of the sealed portion resides in the indentation.

A battery packaging material has an excellent ink printing characteristic on a base-layer-side surface. This battery packaging material has a laminated body formed by sequentially stacking at least a base layer, a metal layer, and a sealant layer, with the wet tensile strength of the surface of the base layer being 32 mN/m or greater.

A repeatedly bendable power storage device is provided. A highly reliable power storage device is provided. A long-life power storage device is provided. A repeatedly bendable electronic device is provided. A flexible electronic device is provided. The power storage device includes a positive electrode, a negative electrode, and an exterior body wrapping the positive electrode and the negative electrode. The exterior body includes a metal layer and a resin layer. The thickness of the metal layer in at least part of an outer edge of the exterior body is smaller than that in a region other than the outer edge. The exterior body has a plurality of slits in the outer edge.