Storage battery grid, method of manufacturing storage battery grid, and storage battery using storage battery grid

Abstract

To regularize a potential distribution of a grid, prevent local corrosion and prolong product lifetime, a storage battery grid includes frame skeleton (2) in a rectangular shape, a lug portion (21) formed upward from an upper side (2a) of the frame skeleton (2), one or more of main vertical skeletons (3X) extending downward from the lug portion (21) in the frame skeleton (2); and a plurality of diagonal skeletons (4) that branch from at least the main vertical skeletons (3X) extending to both sides with the main vertical skeletons (3X) as axes, and that extend diagonally from the upper side (2a) to the lower side (2b). The plurality of diagonal skeletons (4) are disposed at intervals in a direction of extension of the main vertical skeletons (3X), and at least partial of the plurality of spaces demarcated with the main vertical skeletons (3X) as a portion of the sides are in a substantially quadrilateral shape.

Description

technical field [0001] The present invention relates to a battery grid, a method for manufacturing the battery grid, and a battery using the battery grid. Background technique [0002] Conventionally, as a grid used for a storage battery, an ekispand grid (mesh grid) obtained by forming slits in a lead alloy sheet, for example, in a zigzag shape and stretching it, as disclosed in Patent Document 1, has been used. The expanded grid includes: an upper frame formed with ears; a lower frame opposite to the upper frame; and mesh ribs formed between the upper frame and the lower frame. Furthermore, the electrode plate is constituted by filling the squares formed by the upper frame, the lower frame, and the mesh ribs with an active material. [0003] However, since the expanded grid does not have frames connecting the upper frame and the lower frame on the left and right sides, it is easy to elongate in the height direction, and because it is easy to bend and deform in the plane d...

AI Technical Summary

Problems solved by technology

[0005] However, since this cast grid has a portion not facing the ear side (particularly, the branch start rib) in the upward path along the branch rib, the current path to the ear is increased and the resistance is increased.

As a result, there is a problem that the potential distribution of the entire electrode plate becomes unbalanced, localized corrosion occurs, and the life of the electrode plate shortens.

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