CN2151539Y

CN2151539Y - Electrode pole seating structure for plastic sealing Cd-Ni accumulator

Info

Publication number: CN2151539Y
Application number: CN 93200501
Authority: CN
Inventors: 刘琳惠; 王瓞生; 马云洲; 孙燕宝
Original assignee: No18 Inst Ministry Of Machine-Building And Electronics Industry
Current assignee: No18 Inst Ministry Of Machine-Building And Electronics Industry
Priority date: 1993-01-13
Filing date: 1993-01-13
Publication date: 1993-12-29
Anticipated expiration: 2003-01-13

Abstract

The utility model discloses an electrode pole sealing structure for plastic sealing Cd-Ni accumulators, which belongs to a sealing structure component of a sealing Cd-Ni accumulator. The electrode pole sealing structure for plastic sealing Cd-Ni accumulators mainly solves electro-liquid leakage from an electrode pole when an accumulator is in use, and alleviates the occurrence of the 'climbing alkalis' phenomenon of a negative pole. The plastic deformation of a cover body material is utilized to make the cover body and the electrode pole bevel with a definite taper tightly contact and to form a good sealing layer. The electrode pole seating structure for plastic sealing Cd-Ni accumulators is not only adapted for sealing accumulators, but also widely used in unsealing accumulators.

Description

Electrode pole seating structure for plastic sealing Cd-Ni accumulator

The utility model belongs to the hermetically-sealed construction parts of sealed cadmium-nickel battery.

Nickel cadmium cell has gas to produce in charging process, sealed cell is when completely charging, interior pressure can reach 0.3Mpa, during floating charge, interior pressure also maintains about 0.08Mpa, excessive from pole for preventing storage battery alkali lye when charging with floating charge, requiring has good sealing property between pole and the lid.

In addition, nickel cadmium cell use and storage process in, alkali lye (referring to hydroxyl) can prolong electronegative matrix climbs and prolongs, and causes the generation of the battery electrode column phenomenon of " climbing alkali ".

In existing technology, the hermetically-sealed construction of " O " type circle is adopted in the sealing at non-tight type nickel cadmium cell pole place usually, because " O " type circle matter is soft, easily twisting, in case fastening, " O " type circle gross distortion, be difficult to the sealing between assurance pole and lid, its result causes the pole leakage serious.

For enclosed type accumulators, because interior pressure is in use arranged, if above-mentioned " O " type of employing coil structures, leak at the pole place can be more serious, so that battery can't use.

Task of the present utility model is to overcome the deficiency of prior art, and a kind of post sealing structure is provided, and prevents that effectively the in use electric liquid of storage battery from leaking from pole, and slows down the generation of the negative pole phenomenon of " climbing alkali ".

The utility model is realized by following measure:

Lid 1 is to make with the material with plastic deformation, and the pole hole of matching with pole 2 is arranged above.

The lower end of pole 2 is screw threads, the screw thread lower end is a cone structure, so just can be when fastening pole 2, utilize nut 3 lockings, to carry on the pole conical surface,, make lid 1 crimp take place at place, utmost point hole so the pole hole of lid 1 is strutted, thereby cause inboard generation the in the pole conical surface and the cover plate pole hole that is squeezed into taper closely to contact, reach the purpose of sealing.

The tapering α of pole 2 screw thread lower end cones is very important, and the α value is too little, and the plastic deformation of cover plate 1 is too little, does not reach sealing effectiveness; The α value is too big, and promptly plastic deformation is too big, surpasses the material plastic deformation limit, makes the pole hole be full of cracks of lid 1.Facts have proved that the α value is got 3.2 °～4.2 °, sealing effectiveness is best.At this moment the decrement of lower end, pole hole is about 8～11%.The α value choose difference with regard to material and different, to the material of good toughness, it is bigger that the α value can obtain, otherwise, can obtain littler.

Compared with the prior art the utility model has obtained following outstanding effect:

1. simple in structure, save other part and man-hour, have good sealing property

2. be not only applicable to sealed cell, can be widely used in the non-tight storage battery yet

Accompanying drawing is the post sealing structure schematic diagram

Embodiment:

The material of lid 1 adopts nylon 1010, and the body tapering of pole screw thread lower end is 3.2～4.2 °, and the deflection at place, lid pole hole is 8～11%, sealing effectiveness the best.

The also available modification AS of the material of lid 1, but the deflection outline at the tapering of pole 2 and place, lid pole hole changes.

Claims

1, a kind of shell sealed cadmium-nickel battery post sealing structure of moulding, " O " type circle hermetically-sealed construction is arranged, it is characterized in that post sealing structure is made of lid 1, pole 2 and nut 3, cover plate 1 is to make with the material with plastic deformation, the pole hole of matching with pole 2 is arranged above, the lower end of pole 2 screw threads is cones, and its tapering is α, utilizes nut 3 lockings, carry on the pole conical surface, reach the purpose of sealing.

2, the shell sealed cadmium-nickel battery post sealing structure of moulding according to claim 1 is characterized in that, the tapering α of pole 2 screw thread lower ends is 3.2 °～4.2 °.

3, the shell sealed cadmium-nickel battery post sealing structure of moulding according to claim 1 is characterized in that the material of lid 1 is a nylon 1010, also available modification AS.