JPS5832902B2 - storage battery - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a storage battery that prevents pole column corrosion.

Conventionally, when lead-acid batteries for stationary equipment are used for long periods of time, the pole poles become wet due to electrolyte splashing or seeping up, causing local corrosion at the bottom of the bushing of the battery case lid, and terminal connections due to seepage further upwards. The problem was that the poles would corrode, increase the resistance of the poles, and eventually break, making them unusable.

The present invention places importance on the fact that the pole poles get wet with electrolyte as the first cause of pole pole corrosion, and provides a storage battery that prevents pole pole corrosion by preventing electrolyte splashing and seepage. It is.

An embodiment of the present invention will be described.

A cylindrical body 4 made of a non-breathable material is screwed onto and surrounded by an 01J ring 3 on the pole pillar flange 2 at the upper part of the pole pillar 1, and a seal such as a compound is applied to the upper edge of the screwed part 5. Material 6 is enclosed.

The lower part of the pole column 1 is surrounded by a cylindrical body 4 that hangs down from the top of the pole column 1 to near the bottom end of the pole column 1 and is open to the electrolytic solution 7, and is slightly below the bottom end of the cylindrical body 4. An electrolytic solution seepage prevention ring 8 made of polyisobutylene or the like is attached to the outer periphery of the upper pole column.

Furthermore, even if the lower part of the pole post 1 needs a certain thickness in order to have durability against corrosion, the upper and central parts of the pole pole 1 are less likely to corrode in the case of the present invention, so the thickness should be reduced. We are saving materials by reducing

The electrolyte 7 maintains a gap between the cylindrical body 4 and the pole column 1 to the extent that no capillary phenomenon occurs, so that the electrolyte 7 does not enter the hermetically sealed interior, and is caused by a minute amount of gas generated from the pole column 1. In the increased pressure state, the liquid level remains at the lower end of the cylindrical body 4.

Incidentally, the cylindrical body 4 to which the pole pillar 1 is screwed is a Q IJ song'
The screw portion 5' of the fixing nut 9 is screwed onto the battery case lid 10 via the screw portion 5' of the fixing nut 9.

11 is a screw connection part, and 12 is a pole piece.

To explain the assembly method, first, the electrolyte seepage prevention ring 8 is attached to the pole pole 1, and the pole pole dust 12 is welded.

Next, the 01J ring 3 is placed on the pole pole collar 2, and the cylindrical body 4 is screwed to cover the pole pole 1, and in this state it is stored in a battery case.

Next, after covering the battery case lid 10 and fixing it to the battery case lid 10 with the fixing nut 9, the upper edge of the threaded part 5 of the pole column 1 and the cylindrical body 4 is sealed with the sealing material 6 to complete the assembly. .

Therefore, if the electrolytic solution 7 is injected after assembly, the electrolytic solution 7 will not enter the inside of the cylindrical body 4, and there will be no electrolytic solution splash or seepage, which will prevent local corrosion at the bottom of the bushing and the terminal connection area. In addition, even if the lower part of the pole column 1 that gets wet with the electrolyte 7 progresses due to uneven alloy composition, etc., and if it melts and sparks, the cylindrical body 4 can be protected from corrosion. Because only a single gas, either oxygen at the anode or hydrogen at the cathode, is generated inside due to electrolysis of the electrolyte γ, there will be no ignition and no explosion.

It goes without saying that the cylindrical body 4 can also be formed integrally with the battery case lid 10.

As mentioned above, the present invention prevents the electrolyte from splashing and seeping out, prevents local corrosion at the bottom of the battery case lid and corrosion at the terminal connection, and further prevents sparks in the event of a pole pole melting. It has great industrial value in that it is safe against.

[Brief explanation of drawings]

The drawing is a longitudinal sectional view of a main part of the storage battery of the present invention. 1 is a pole pole, 2 is a pole pole flange, 3 and 3' are O-rings, 4 is a cylindrical body, 5 and 5' are screwed parts, 6 is a sealing material, 7 is an electrolytic solution, 8
1 is a seepage prevention ring, 9 is a fixing nut, 10 is a battery case lid, 11 is a terminal connection part, and 12 is a pole dust.

Claims (1)

[Claims] 1 Inside the battery case, the upper end of a cylindrical body made of a non-porous material is hermetically fixed to the upper end of the pole pole, and the lower end of the cylindrical body is suspended so as to surround the pole from the top to the bottom. A storage battery characterized in that a seepage prevention ring is attached to the outer periphery of the pole column that is open to the electrolyte and slightly above the lower end of the cylindrical body.