JPH0357007Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications The present invention relates to a sealed lead acid battery.

BACKGROUND ART Conventionally, in a sealed lead-acid battery, an electrolytic solution is impregnated and held in a glass mat or a linter separator.

Problems that the invention aims to solve In this type of battery, oxygen gas is generated from the anode during charging, and this is absorbed and reduced to water at the cathode, but at this time, the fiber direction of the glass mat or linter separator is irregular. Therefore,
Lateral movement of oxygen gas is inhibited, and the linter separator may move to the top of the electrode plate due to the buoyancy of the gas. For this reason, the gas absorption reaction occurs intensively at the upper part of the cathode, and the upper specific gravity of the electrolyte is low and the lower specific gravity is high, resulting in the problem that the active material deteriorates early in the high specific gravity area. .

The present invention aims to solve the above problems.

Means for Solving the Problems In the present invention, the separator is one in which sliver yarns made of short glass fibers are arranged in a fixed direction on the surface of a glass mat or linter separator. The sliver yarn contacts the anode plate, or the anode plate and the cathode plate, so that the direction of the sliver yarn is perpendicular to the vertical direction of the battery.

Effect: As a result, the upward movement of oxygen gas is inhibited by the group of glass fibers, making it easier to move laterally, and the gas absorption reaction to the cathode plate occurs over the entire area of the electrode plate.

Embodiment An embodiment of the present invention will be described with reference to a case where it comes into contact with an anode plate.

Figures 2 and 3 show sliver yarns 2 (short glass fibers are collected on a net-like drum while spraying a sizing agent onto a linter separator or glass mat 1, and passed through a cylindrical sizing device so that the fiber direction is constant. Fig. 2 is a front view and a side view of a case in which a string-like material (condensed in a string shape) is attached. As shown in FIG. 1, an electrode plate group is assembled so that the sliver yarn 2 comes into contact with the anode plate 3, and an electrolytic solution is impregnated therein. 4 is a cathode plate. When the sliver yarn 2 is also brought into contact with the cathode plate 4, the sliver yarn 2 is attached to both sides of the linter separator or the glass mat 1.

Effects of the invention With this invention, when the oxygen gas generated during charging rises, it is inhibited by the fiber direction of the glass fibers and becomes easier to move laterally, so that the oxygen gas absorption reaction at the cathode occurs throughout the electrode plate. Since the specific gravity distribution of the electrolyte becomes uniform, deterioration of the active material due to non-uniform specific gravity is prevented, and the life of the sealed lead-acid battery can be extended.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing a group of electrode plates in an embodiment of the present invention, FIG. 2 is a front view showing a state in which sliver yarn is attached to a linter separator or a glass mat, and FIG. 3 is a side view. 1 is a linter separator or glass mat, 2 is a sliver yarn, 3 is an anode plate, and 4 is a cathode plate.

Claims (1)

[Scope of utility model registration request] The separator is a glass mat or a linter separator with sliver yarns made of short glass fibers bundled in a fixed direction arranged on the surface of the glass mat or linter separator, and the direction of the sliver yarns of the separator is set relative to the vertical direction of the battery. A sealed lead-acid battery with an anode or an anode and a cathode in contact at right angles.