JPS6047369A - Exhaust device for lead storage battery - Google Patents

Abstract

PURPOSE:To eliminate ill effects which may be caused by exhaustion of acid by neutralizing a sulfuric acid mist and sulfuric acid contained in a vapor exhausted together with gas by installing a porous body impregnated with an alkaline or weakly alkaline compound over the exhaust hole of a storage battery. CONSTITUTION:A sheet-like porous body 7 impregnated with an alkaline or a weakly alkaline compound is installed over an exhaust hole 6 by connection, sticking or the like. The porous body 7 is prepared from either a porous nonwoven fabric or paper-like material consisting of a polypropylene resin, a polyethylene resin, an acrylic resin or the like or an inorganic material such as glass fiber. For the above alkaline or weakly alkaline compound, an alkali metal, an alkaline earth metal, a hydroxide such as an ammonium compound, a bicarbonate, a carbonate and the like are preferable. A dilute sulfuric acid mist generated from electrolyte 5 and a vapor containing dilute sulfuric acid are exhausted outside the battery simultaneously with oxygen gas and hydrogen gas during charging of the battery. The dilute sulfuric acid is neutralized by the above porous body 7 impregnated with the alkaline or weakly alkaline compound thereby exhausting only oxygen gas and hydrogen gas outside the battery.

Description

[Detailed description of the invention] Industrial applications The present invention relates to an air control device for a lead-acid battery.

Conventional configuration and its problems Conventionally, lead-acid batteries have been used for this purpose.

Because hydrogen gas is generated, an exhaust port is provided, but this exhaust port releases 4J+ micro droplets (mist) of acid or steam to the outside of the battery along with silicic acid and hydrogen gas. Various methods have been unsuccessful as preventive measures. For example, there is a method in which a porous filter is used to allow only acid and hydrogen gas to pass through, and vapor of dilute sulfuric acid mist X is filtered.

[7] However, even with this method, it was not possible to completely remove all the mist and the like, so the acid was discharged to the outside of the battery, causing various problems. For example, when used to start a car, the inside and outside of the bonnet is blued and corroded, and when using electric M for electrical equipment, it has many drawbacks, such as corroding all the metal parts of the electrical equipment. It was 1~.

The object of the invention is to solve the above-mentioned conventional drawbacks, and to reduce the amount of gas k, rJ generated from inside a storage battery during charging.
The purpose is to completely neutralize the sulfuric acid-containing steam and mist that is discharged together with this gas, and make it neutral so that no acid is released outside the battery.

Structure of the Invention In order to achieve the above-mentioned object, in the present invention, an alkali or an inorganic porous material such as a non-woven paper-like porous body made of a synthetic resin such as polyethylene or a glass fiber thread 11 is coated with alkali or the like. The porous body is impregnated with a weak alkali compound, and the porous body is exposed to the bleed air of the storage battery.
It is characterized by what it did. This goes up to gas and Jl goes up to 1.
+ It can completely neutralize the sulfuric acid and sulfuric acid mist in the emitted steam, eliminating damage caused by acid emissions.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on the drawings. What is 1 in Figure 1? I3: 2 is a lid, 3 is a terminal, 4 is a group of electrode plates consisting of a positive electrode plate, a negative electrode plate, and a separator. 5 is an electrolytic solution made of dilute sulfuric acid, and 6 is provided in the furnace 2. The gas exhaust port 7 is a sheet 1-shaped porous body impregnated with an alkali, super, or weak alkali compound, which is installed by fitting or pasting on the top of the 411 air 16, and its base material is This porous body i (J,
Labels, instruction manuals.

It also serves as an explosion-proof, spill-proof liquid filter, or a liquid-absorbing mano i-. Incidentally, the alkali or weakly alkaline compound mentioned above is an alkali metal or an alkaline earth metal.

Compounds selected from the group of hydroxides, monobicarbonates, and carbonates are preferred.

Next, when the battery is charged, hydrogen gas - 1... y 0 and oxygen gas generated from the electrode plate group 4 pass through the bleed port 6 and pass through the porous body impregnated with the alkali or weakly alkaline compound in step 7;
It is extracted into the vortex (2 and 2) parts. At this time, one tomb
The dilute sulfuric acid mist or dilute sulfuric acid vapor of the electrolytic solution 5 is discharged to the outside of the battery, or the diluted sulfuric acid mist or diluted sulfuric acid vapor of the electrolyte 5 is discharged to the outside of the battery, or the 1-
Add dilute sulfuric acid to the inside of the cell, and pour only the acid and hydrogen gas outside the battery.
ql (pcυ).Also, there is a lot of water 1,
Because it is absorbed throughout the body, it does not come out of the battery.

Fig. 2 1.71, on the battery) 1β liquid 1] Plug 8 J No. 1 air 8' - J 2 (with seal 9 and "C porous forest" - C attached, do this. As a result, the dilute sulfuric acid discharged from inside the battery is neutralized by the alkali or weakly alkaline compound in the porous body 7, and neutral gas is discharged. A sheet-like porous body is fitted as an explosion-proof and overflow-proof liquid filter 10 to the explosion-proof liquid filter 10, and this sheet-like porous body is also impregnated with an alkali or weakly alkaline compound. This is to emit all neutral gas U1 in which the acid is neutralized by the alkali or weak alkali compound in the filter 10.
(The figure is on the battery) ISO liquid I] The alkaline liquid is placed above the air bleed port 8' of the plug 8. It is attached to the battery and neutralizes the acid-sea-alkali or weakly alkaline compounds generated from inside the battery, turning it into a neutral gas.

FIG. 5 shows a caution or display label 12 completely affixed to the - side of the JRI' air vent 6 opened at the top of the battery, and this label 12 is a porous body.
A polypropylene resin that is impregnated with an alkali or weakly alkaline compound, or produced by mixing an alkali or weakly alkaline compound during the production of label base paper, and retains the alkali or alkaline compound.

This is a synthetic paper made of poly(R) tyreno resin, acrylic, and poly(R) resin. The acid generated from inside the battery is neutralized with Dibel 12 alkali or weakly alkaline compound,
411 (outside the battery) as a gas.

Effects of the Invention 1: According to the present invention, the following effects can be obtained.

(1) Since the dilute sulfuric acid, which is the electrolyte, is discharged to the outside of the neutral state-C battery, it will not corrode automatic desks, electrical equipment, etc. that use this V battery.

(2) Since it can be used as an instruction manual or label exhaust filter, it can be easily installed without the need for special parts.

(3) Since moisture is absorbed by the label, instruction manual, filter, etc., moisture does not leak outside of the battery, which also prevents leakage.

(4) When producing synthetic paper, use alkaline or weakly alkaline J-I
By mixing the J compound, the desired alkaline synthetic paper can be produced without impregnating with an alkali or weakly alkaline compound afterwards.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view showing an air extraction device for a lead storage battery 4 according to one embodiment of the present invention, and FIGS. 2 to 5 are perspective views showing other embodiments of the present invention. be. 6... Exhaust port, 7... Porous body, 10-...7 Filter made of sheet-like porous body, 11... Handling manual made of sheet-like porous body, 12...・Label made of sheet-like porous material.

Claims (2)

[Claims] (1) A porous non-woven fabric made of synthetic resin or a sheet-like porous material made of paper or inorganic material is impregnated with an alkali or a weakly alkaline compound, and this porous material is installed above the exhaust port of a storage battery. 't! The lead-acid battery exhaust system is a hallmark of the temple. (2) Claims in which the alkali or weakly prucalic compound is at least one selected from the group consisting of alkali metals, alkaline earth metals, ammonia groups, hydroxides thereof, bicarbonates, and carbonates. The exhaust device for a lead-acid battery according to item 1.