The present invention provides a secondary battery packaging material including at least a metal foil layer, a second base material layer, and a heat-sealing resin layer laminated in this order on a surface of a first base material layer. The second base material layer is laminated on the metal foil layer directly or via an anti-corrosion treatment layer. The first base material layer is formed of a resin composite containing a thermosetting resin or a thermoplastic resin. The second base material layer is formed of a resin composite containing a thermosetting resin.

In the present invention, a secondary battery comprises: a battery element (20) in which a positive pole plate and a negative pole plate are layered; a housing (10) for housing the battery element (20) and an electrolyte; electrode tabs (21, 25) of the positive electrode and the negative electrode that are led out from the housing (10); a fusing part (25b) that is formed in a part of the electrode tab and preferentially fuses if a predetermined current has flowed; and a reinforcing member (33) which is attached to an electrode tab at least at the section having the fusing part (25b), and which is attached so as to be separated from the housing.

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 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.

An object of the invention is to obtain a rectangular secondary battery in which an outer surface of the battery has an insulating property and watertightness, and a short-circuit due to dew condensation water or the like does not occur between battery containers of adjacent batteries or between a battery container and a housing of a battery pack. A rectangular secondary battery (90) of the present invention for solving the foregoing problems is a rectangular secondary battery in which six faces of a battery container are covered with one sheet of insulating film (50). The rectangular secondary battery (90) is characterized in that, ends of the insulating film are overlapped with each other, and the insulating film continuously covers mutually adjacent faces having each of ridges between the faces of the battery container.

The invention is directed to a flexible and stretchable battery which is formed of an assembly having anode side and a cathode side separated by a separator and sealed in a packaging. The assembly is in a folded configuration and contains at least one cut therein, such that when the assembly is unfolded and subjected to subsequent deformation, a final folded state of the battery is able to stretch beyond a flat planar state of the battery in all dimensions.

A hard shell cell housing for an individual alkali metal cell includes a housing main body with an interior space that is configured to accommodate cell components of the individual alkali metal cell, and a housing cover configured to close off the interior space. The housing main body is formed at least substantially from plastic, and further includes at least one vapor barrier layer.

A belt with built-in batteries includes: a plurality of rechargeable batteries, each having a positive terminal and a negative terminal that protrude in two opposite directions; a positive reinforcing tab that electrically connects the positive terminals of the rechargeable batteries to each other; a negative reinforcing tab that electrically connects the negative terminals of the rechargeable batteries to each other; and a sheath that seals the positive and negative terminals of the rechargeable batteries and the positive and negative reinforcing tabs.

Methods and apparatus to form biocompatible energization elements are described. In some embodiments, the methods and apparatus to form the biocompatible energization elements involve forming cavities comprising active cathode chemistry. The active elements of the cathode and anode are sealed with a laminate stack of biocompatible material. In some embodiments, a field of use for the methods and apparatus may include any biocompatible device or product that requires energization elements.

A battery for use in electronic devices and which is safely ingested into a body and a related method of making the battery. The battery includes an anode, a cathode and a quantum tunneling composite coating. The quantum tunneling composite coating covers at least a portion of at least one of the anode or the cathode and provides pressure sensitive conductive properties to the battery including a compressive stress threshold for conduction. The compressive stress threshold may be greater than a pre-determined applied stress in a digestive tract of the body in order to prevent harm if the battery is ingested. The battery may include a waterproof seal that extends between the quantum tunneling composite coating and a gasket separating the anode and cathode to inhibit the battery from short circuiting in a conductive fluid below the compressive stress threshold.