Gs Yuasa International Ltd.

Gs Yuasa Corporation

Gs Yhasa International, Ltd.

Gs Yussa International Ltd.

Yoshiomi Fujiwara

Hiroyuki Tanaka

Ken Sawai

Tadashi Nishida

A liquid lead storage battery includes a negative electrode plate, a positive electrode plate and an electrolyte solution. The both plates are arranged so as to face each other in a thickness direction and immersed in the electrolyte solution. The negative electrode plate includes an active material containing carbon. An elastic sheet formed of a porous material is arranged between the negative electrode plate and the positive electrode plate so as to press the negative electrode plate from both sides in the thickness direction.

Liquid lead storage battery and battery system

A grid for a battery plate is made by forming a metal sheet is formed into a grid-like shape. Rupture due to torsion or stress concentration does not occur in a basal portion of a wire which is drawn out from a node of the grid, thereby preventing corrosion due to electrolyte from advancing so as not to cause a crack of corrosion in an early stage. The invention provides also a battery using the grid for a battery plate, a method of producing the grid for a battery plate, and a battery using it.

Grid for a battery plate, method of producing the same, and battery using the same

Grid for battery plate, method of producing the same, and battery using the same

A method where two disk cutter rolls are used to form slits in a staggered pattern in a metal sheet; disk cutters are part of the disk cutter rolls; ridges are arranged in a peripheral edge of the disk cutters; and valleys are arranged between the ridges, where an axis-to-axis distance L (mm) of the rolls satisfies a relationship of 2r&#x2212;0.3&#x2266;L&#x3c;2r when a radius of a reference circumferential face made with the valleys is r (mm). The method can include a carrying procedure for passing the sheet between the rolls, then carrying the sheet along a peripheral face of one of the rolls, and then pulling out the sheet from the peripheral face.

Apparatus for producing a battery plate expanded grid

A storage battery is provided in which an expand grid is improved with respect to the widths of grid wires, the sectional areas of nodes, and the shapes of meshes, whereby the productivity of the expand grid can be enhanced and the life performance can be improved. As means for attaining the object, a storage battery in which an expand grid is used as a battery plate, the expand grid being a grid member which is formed by expanding a side portion of a collector frame portionof a metal sheetto connect a large number of grid wiresto one another in a net-like shape, is configured so that widths of grid wiresof a row which is directly connected to the collector frame portionof the expand grid, and a lateral end row are larger than widths of grid wiresof at least one of intermediate rows.

Storage battery having expanded grid member

Storage battery with expanded grid

The method of producing a grid for a battery electrode plate is characteristic in that in producing a grid formed from a sheet by means of a rotary expander equipped with the disk cutter cluster with disk edge disk cutters, there is a notch that penetrates the outer periphery of the said edge disk cutter in the thickness direction of the said edge disk cutter.

Growing community of inventors

Kyoto, Japan

Yoshiomi Fujiwara