CN1187052A - Battery - Google Patents

Abstract

The invention provides a battery in which the leakage of electrolyte can be observed with naked eyes. The battery includes a shell, a positive plate and a negative plate which are mutually insulative and arranged in the shell, a cap support part positioned at the upper part of the inner side of the shell and electrically connected with the positive plate, a cap which is fixed on the cap support part and covers the shell, a washer installed between the cap and the shell and insulating the cap and the shell, and an electrolyte detection device arranged between the cap and the shell, so that at least one part of the device is exposed outside and reacts with the electrolyte leaked from the shell.

Description

Battery

The present invention relates to a kind of battery, relate to a kind of battery that can with the naked eye differentiate electrolyte leakage or rather.

Consult Fig. 1, conventional battery comprises a cylindrical housings 11 usually, is wound with positive plate 12 and negative plate 13 therein.Be located at spacer 14 between positive plate 12 and the negative plate 13 with two pole plates 12 and 13 electric insulations.Two pole plates 12 and 13 and spacer 14 be installed in the inwall of housing 11.Two pole plates 12 and 13 and spacer 14 by annular element 15 supportings that are installed on housing 11 inside bottom.In addition, two pole plates 12 and 13 and supporting part 16 supportings that form by curving inwardly of each top edge of spacer 14 by predetermined portions with shell 11 tops.Cap supporting member 17 with opening 17a is arranged in supporting part 16.The packing ring 18 that cap supporting member 17 is laid by the supporting part 16 in the contiguous housing 11 is supported.The one rubber air-permeable member 19 that is used to cover opening 17a is located at cap supporting member 17, and the cap 20 that covers rubber air-permeable member 19 is connected to and is bearing on the cap supporting member 17.Cap supporting member 17 utilizes a lead-in wire 21 that is connected to cap supporting member 17 bottoms to link to each other with positive plate 12.Utilize packing ring 18 with housing 11 and cap 20 electric insulations.

In above-mentioned battery, when the internal pressure increase in the housing 11 exceeded predetermined value, gas and electrolyte leaked by the air gap that forms between opening 17a, rubber air-permeable member 19 and cap supporting member 17.Producing the heavy metal that leaks and wherein comprise in battery that damages or the battery used up is harmful to human body.Yet, because not having, conventional battery do not show the device that leaks occurrence degree, the initial leakage of electrolyte is difficult for being observed.Thereby, the heavy metal in the electrolyte that is included in leakage is exposed.In addition, adopt the device of this battery to reveal and damaged owing to electrolyte.

Thereby, the purpose of this invention is to provide a kind of battery with leak detecting device that initial stage of being used to detect electrolyte leaks.

In order to realize above-mentioned purpose of the present invention, the battery that is provided comprises:

Housing;

Be positioned at the positive plate and the negative plate of housing mutually insulated;

The cap supporting member is located at the housing inside upper part and is electrically connected on the positive plate;

A cap is fixed on the cap supporting member covering shell;

One packing ring is installed between cap and the housing, makes the insulation of cap and housing; And

The electrolyte checkout gear is placed between cap and the housing, makes its minimum part be exposed to the outside, and is reacted by the electrolyte that spills in the housing.

Make above-mentioned purpose of the present invention and advantage become more obvious by the reference accompanying drawing to detailed introduction of a preferred embodiment of the present invention, wherein:

Fig. 1 is the schematic partial sectional view of conventional batteries; And

Fig. 2 is the schematic partial sectional view according to battery of the present invention.

As shown in Figure 2, battery according to the present invention comprises-cylindrical housings 31, one group of pole plate 40 that is wound on housing 31 inboards.The negative plate 42 that this group pole plate 40 comprises the positive plate 41 that is made of nickel oxide, be made of the alloy of absorption hydrogen and between two pole plates 41 and 42 with the spacer 43 of positive plate 41 with negative plate 42 electric insulations.In order to fix on the top that will organize pole plate 40, a supporting part 32 is formed on the housing 31.The bottom of this group pole plate 40 is by annular element 33 supportings that are installed on housing 31 bottoms.

On the top of housing 31, for seal casinghousing 31, order is equipped with cap supporting member 35, rubber gas permeability 36 and cap 37.Packing ring 34 supportings that cap supporting member 35 has opening 35a and installed by the supporting part in the contiguous housing 31 32 in the heart part therein.Lead-in wire 38 is attached to the bottom of cap supporting member 35, and positive plate 41 is electrically connected on the cap supporting member 35.Cap 37 is electrically connected on the cap supporting member 35, and the core of cap 37 is by stretching out among the opening 31a in the shell 31.Rubber air-permeable member 36 is utilized the opening 35a in the elastic pressure covering cap supporting member 35 between cap supporting member 35 and cap 37.Packing ring 34 is with cap supporting member 35 and housing 31 electric insulations.

Between cap 37 and housing 31, neither one electrolyte test section 50, its with react by the electrolyte that opening 35a spills by housing 31.The part of electrolyte test section 50 is revealed the outside by the opening 31a in the housing 31, therefore, manifests the leakage of the electrolyte that can be differentiated by naked eyes.

Wish that electrolyte test section 50 has a litmus paper according to electrolyte change color.The color of litmus paper changes with the pH value of the electrolyte in housing, the electrolyte dyeing that this litmus paper is spilt by housing 31 inboards.In order to prevent that housing 31 and cap 37 from electrical shorts taking place, this litmus paper can also replace an anti-short-circuited conducting sleeve of being made by paper or synthetic resin.

As mentioned above, battery according to the present invention comprises the electrolyte test section, therefore can manifest with the naked eye can observed electrolyte leakage.Thereby, be easy to battery that will damage or the battery that uses up and normal battery differentiation, make can prevent because the infringement of the exposure of electrolyte leakage and toxic heavy metal to installing.

Should be appreciated that the present invention is not limited to the embodiment that limits, can carry out a lot of changes and improvements by those skilled in the art within the scope of the invention.

Claims (2)

1. battery comprises:

Housing;

Be located at positive plate and negative plate insulated from each other in the described housing;

A cap supporting member is located at the top of described housing inboard and is electrically connected to described positive plate;

A cap is fixed on the described cap supporting member, covers described housing;

One packing ring is installed between described cap and the described housing, with described cap and the insulation of described housing; And

The electrolyte measurement mechanism, it places between described cap and the described housing, makes its at least a portion be exposed to the outside, and by the reaction of the electrolyte that spills in the described housing.

2. battery according to claim 1, wherein said electrolyte checkout gear comprises owing to described electrolyte spills the litmus paper that changes color.

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