An ultrasonic bonding device includes a processing member, a biasing member, a first moving unit and a second moving unit. The biasing member biases a pair of separators to the ultrasonic horn. A first moving unit separates the ultrasonic horn and the biasing member from each other with respect to a transport path of the separators. A second moving unit moves the separators and positions a bonding portion of the separators between the ultrasonic horn and the biasing member. The first moving unit has a coupling cam rotationally driven by a driving unit, a first connecting portion coupling the coupling cam and the processing member, and a second connecting portion coupling the coupling cam and the biasing member, and separating the processing member and the biasing member from each other with respect to the transport path by rotation of the coupling cam.

An alkaline battery includes a bottomed tubular battery can made of metal, serving as a positive electrode current collector; a positive electrode mixture sealed in the battery can and formed in a cylindrical shape, the positive electrode mixture containing manganese dioxide as a positive electrode active material and containing a binder including fluorine resin such that a ratio of the binder to the positive electrode active material is 0.2 wt % or more and 0.8 wt % or less; a bottomed tubular separator sealed in the battery can and arranged on an inner peripheral side of the positive electrode mixture; a gel-form negative electrode mixture sealed in the battery can, arranged inside the separator, containing zinc powder as a negative electrode active material; and an electrolyte that includes an alkaline aqueous solution, sealed in the battery can.

An alkaline battery includes a bottomed tubular battery can made of metal, serving as a positive electrode current collector; a positive electrode mixture sealed in the battery can and formed in a cylindrical shape, the positive electrode mixture containing manganese dioxide as a positive electrode active material and containing a binder including fluorine resin such that a ratio of the binder to the positive electrode active material is 0.2 wt % or more and 0.8 wt % or less; a bottomed tubular separator sealed in the battery can and arranged on an inner peripheral side of the positive electrode mixture; a gel-form negative electrode mixture sealed in the battery can, arranged inside the separator, containing zinc powder as a negative electrode active material; and an electrolyte that includes an alkaline aqueous solution, sealed in the battery can.

The discharge performance of a primary, bobbin-style electrochemical cell is improved by incorporating a separator formed from a continuous separator sheet defining a two-layer cylindrical sidewall and a closed bottom end between the included electrochemical cell cathode and anode. A first layer of the cylindrical separator is formed by rolling a first end of a continuous separator sheet into a cylinder having a central axis parallel with a longitudinal axis of the continuous separator sheet, and then rolling a second end of the continuous separator sheet around the exterior of the first cylindrical layer to form a second cylindrical layer. The closed bottom end is formed by a portion of the continuous separator sheet located between the rolled portion of the first end and the rolled portion of the second end.

Disclosed is a multilayer cable-type secondary battery including a first electrode assembly comprising one or more first inner electrodes and a sheet-type first separation layer-outer electrode complex spirally wound to surround outer surfaces of the first inner electrodes, a separation layer surrounding the first electrode assembly to prevent short circuit of the electrodes, and a second electrode assembly comprising one or more second inner electrodes surrounding an outer surface of the separation layer and a sheet-type second separation layer-outer electrode complex spirally wound to surround outer surfaces of the second inner electrodes.

New, improved or optimized battery separators, components, batteries, industrial batteries, inverter batteries, batteries for heavy or light industrial applications, forklift batteries, float charged batteries, inverters, accumulators, systems, methods, profiles, additives, compositions, composites, mixes, coatings, and/or related methods of water retention, water loss prevention, improved charge acceptance, production, use, and/or combinations thereof are provided or disclosed. More particularly, the present invention is directed to one or more improved battery separators having various improvements that may result in decreased water loss for a battery in which such a separator is incorporated, enhanced charge acceptance, or combinations thereof. Additionally, the present invention relates to one or more improved battery separators having various improvements with regard to shape, and/or physical profile, and/or chemical(s), additives, mixes, coatings, and/or the like used to make such battery separators (such as oil(s), and/or chemical additive(s) or agents used to coat, finish or improve such battery separators (such as surfactant(s))). The improved battery separators of the instant invention are particularly useful in or with industrial batteries, such as inverter batteries, batteries for heavy or light duty industrial applications, and so forth.

New, improved or optimized battery separators, components, batteries, industrial batteries, inverter batteries, batteries for heavy or light industrial applications, forklift batteries, float charged batteries, inverters, accumulators, systems, methods, profiles, additives, compositions, composites, mixes, coatings, and/or related methods of water retention, water loss prevention, improved charge acceptance, production, use, and/or combinations thereof are provided or disclosed. More particularly, the present invention is directed to one or more improved battery separators having various improvements that may result in decreased water loss for a battery in which such a separator is incorporated, enhanced charge acceptance, or combinations thereof. Additionally, the present invention relates to one or more improved battery separators having various improvements with regard to shape, and/or physical profile, and/or chemical(s), additives, mixes, coatings, and/or the like used to make such battery separators (such as oil(s), and/or chemical additive(s) or agents used to coat, finish or improve such battery separators (such as surfactant(s))). The improved battery separators of the instant invention are particularly useful in or with industrial batteries, such as inverter batteries, batteries for heavy or light duty industrial applications, and so forth.

According to an embodiment, a nonaqueous electrolyte battery including an electrode group and a nonaqueous electrolyte is provided. The electrode group is formed by winding a positive electrode, a negative electrode, and a separator arranged between the positive electrode and the negative electrode. The tension modulus of the separator in the winding direction is within a range of 200 (N/mm.sup.2) to 2,000 (N/mm.sup.2).

Provided is a separator roll in which deformation is reduced and an external quality is improved. In the separator roll, a separator is wound around a core, and an absolute value of radial stress .sub.r applied to the core is not more than a critical stress .sub.cr. The critical stress .sub.cr is a value obtained by multiplying A by B, where: A is an absolute value, of radial stress .sub.r applied to the core, as observed in a case where a maximum value of Von Mises stress .sub.m in the core is equal to a yield stress .sub.y of a material of the core; and B is a safety factor of 0.5.

A secondary energy storage element includes a reference electrode or a constituent thereof positioned between at least one ply of a separator layer and one of electrode layers and electrically insulated from the electrode layer by an insulating means, the reference electrode or the constituent thereof positioned such that there is at least one metal filament or a sheet-shaped metallic coating on a surface of the at least one ply of the separator layer or a surface of the insulating means, within an overlap region the at least one metal filament or the sheet-shaped metallic coating is arranged on the surface of a ply of the separator layer or a surface of the insulating means, and the at least one metal filament or the sheet-shaped metallic coating covers on the surface an area of a maximum of 5% of the area over which the overlap region extends.