CN102157764A

CN102157764A - Metal-air battery with uniformly cyclic electrolyte

Info

Publication number: CN102157764A
Application number: CN201110061175XA
Authority: CN
Inventors: 余建岳
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-15
Filing date: 2011-03-15
Publication date: 2011-08-17

Abstract

The invention provides a metal-air battery with uniformly cyclic electrolyte, comprising a shell, an air electrode on the shell, electrolyte and a metal electrode which is inserted into the electrolyte, wherein the shell is provided with a liquid inlet and a liquid outlet and also provided with a cavity internally, and the cavity of the shell contains the electrolyte. The metal-air battery is characterized in that a liquid pool is arranged below the shell; the liquid outlet of the shell is communicated with a liquid inlet of the liquid pool by a pipeline; and the liquid inlet of the shell is communicated with a liquid outlet of the liquid pool by a pipeline. A liquid pump is used for realizing the full circulation of the electrolyte under the condition of natural fall, thereby solving the problems that battery resistance is increased and battery power is reduced because the discharge products of a battery deposit excessively and the service life of the battery is influenced when the air electrode performances are reduced because the electrolyte forms carbonate; and the electrolyte in the battery can be discharged completely when the battery does not work, thus fundamentally eliminating the self discharge and hydrogen evolution phenomena of the battery, reducing wastes, prolonging the service life of the battery, and decreasing the use cost of the battery.

Description

The metal-air cell of electrolyte equalization cycle

Technical field

The present invention relates to a kind of metal-air cell, especially a kind of metal-air cell of electrolyte equalization cycle belongs to metal-air cell design and manufacturing technology field.

Background technology

, green metal-air cell efficient, clean as a new generation has following array structure: housing, be located at the air electrode sheet that is combined into by Cuiization active layer, currect collecting net, waterproof ventilative layer on the housing, contain neutrality or alkaline electrolyte in the housing cavity, insert the metal electrode in the electrolyte; Have following advantage and characteristics simultaneously: the specific power height, the specific energy height, long service life, nontoxic, pollution-free, just can quickly supplement energy without charging device, raw material are recyclable to be utilized again; In addition, because the positive active material of metal-air cell is airborne oxygen, do not take the battery volume, therefore inside battery can carry more metal electrode, the specific energy height, sustainable travel in longer, recycle after the recyclable processing of metal electrode simultaneously, therefore environmentally safe, is the desirable substitute products of novel environment friendly electric automobile power battery.Still there are various deficiencies in existing metal-air cell, and following deficiency is wherein just arranged: the one, and electrolyte can be because of having dissolved CO in the air ₂And generation carbonate is deposited on the air electrode surface, allows ion be difficult to enter electrode and the carrying out that stop electrochemical reaction, thereby reduces the power of battery and discharge current density; The 2nd, in electrolyte, can produce the gel product, thereby increase cell resistance because of battery discharge, reduce the power of battery; The 3rd, when battery is stopped using,, be difficult to avoid self discharge and liberation of hydrogen because electrolyte is still stayed in the battery.These deficiencies all will directly influence the useful life of battery.

Summary of the invention

For preventing electrode passivation and corrosion, keep the due activity of electrode, eliminate self discharge, reduce the deposition of discharging product, increase the power of battery and discharge current density, prolong battery useful life, the invention provides a kind of metal-air cell of electrolyte equalization cycle.

The present invention is to provide a kind of like this metal-air cell of electrolyte equalization cycle, comprise on it and bringing into, liquid outlet, the housing of band cavity in it, and the air electrode on the housing, contain the electrolyte in the housing cavity, insert the metal electrode in the electrolyte, it is characterized in that below housing, being provided with liquid-filling pool, the housing liquid outlet is communicated with the inlet of liquid-filling pool by pipeline, the housing inlet is communicated with the liquid-filling pool liquid outlet by pipeline, the electrolyte in the high-order housing cavity is sent constantly in the low level liquid-filling pool by natural drop, return again in the high-order housing cavity by immersible pump after filtering, so realize recycling of electrolyte, after stopping the battery use, by pipeline the electrolyte in the battery container cavity is entered in the low level liquid-filling pool naturally, eliminate self discharge.

Screen pack is set in the described liquid-filling pool at interval, the liquid-filling pool bottom is provided with slag-drip opening, the top is provided with exhaust outlet, so that filter discharging product by screen pack, and filtrate discharged through slag-drip opening, simultaneously discharge the gas that electrochemical reaction produces, ensure charge and discharge safety, prolong battery useful life through exhaust outlet.

In the described liquid-filling pool immersed pump is set, and links to each other with pipeline one end that passes the liquid-filling pool liquid outlet, the pipeline other end links to each other with the housing inlet, to participate in electrochemical reaction in the electrolyte blowback housing cavity after will filtering.

The pipeline of described connection housing inlet and liquid-filling pool liquid outlet is provided with liquid pump, to participate in electrochemical reaction in the electrolyte blowback housing cavity after will filtering.

Described housing is made as arranged side by side a plurality of, and constituting battery pack, and the inlet of each housing is communicated with by being in charge of with the liquid-filling pool liquid outlet of below, and the liquid outlet of each housing is communicated with by being in charge of with the liquid-filling pool inlet of below.

Described each housing inlet links to each other by being in charge of with house steward, house steward is communicated with the liquid-filling pool liquid outlet and the inlet of below respectively by three-way pipe, pipeline and valve, and on the pipeline that connects housing inlet and liquid-filling pool liquid outlet, be provided with liquid pump, each housing liquid outlet links to each other by being in charge of with house steward, and house steward is communicated with the liquid-filling pool inlet of below.

The present invention compared with prior art has following advantage and effect: adopt such scheme, can under natural drop condition, realize the circulation fully of electrolyte by liquid pump, solve battery discharge product over-deposit and increase cell resistance, the reduction power of battery, and, electrolyte reduces the air electrode performance because of forming carbonate, thereby influence problems such as battery life, and can when not working, battery drain the electrolyte in the battery, fundamentally eliminate self-discharge of battery and hydrogen evolution phenomenon, cut the waste, prolong battery useful life, reduce the battery use cost.

Description of drawings

Fig. 1 is the present invention's structural representation;

Fig. 2 is another structural representation of the present invention.

Embodiment

Below in conjunction with accompanying drawing the present invention is described further.

The metal-air cell of electrolyte equalization cycle provided by the invention, comprise band inlet 14 on it, liquid outlet 6, the housing 12 of band cavity 13 in it, and the air electrode on the housing 12, contain the electrolyte in housing 12 cavitys 13, insert the metal electrode 11 in the electrolyte, metal electrode 11 links to each other with electrode leads to client 7 by conduction collector bar 8, dividing plate 9 is set in the cavity 13 of housing 12 at interval, below housing 12, be provided with liquid-filling pool 2, housing 12 liquid outlets 6 are communicated with the inlet of liquid-filling pool 2 by pipeline 5, housing 12 inlets 14 link to each other with immersed pump 19 in the liquid-filling pool 2 by pipeline 18, the electrolyte in high-order housing 12 cavitys 13 is sent constantly in the low level liquid-filling pool 2 by natural drop, screen pack 3 is set in the liquid-filling pool 2 at interval, liquid-filling pool 2 bottoms are provided with slag-drip opening 1, the top is provided with exhaust outlet 4, so that filter discharging product by screen pack 3, and filtrate discharged through slag-drip opening 1, or with filter screen 3 taking-ups, discharge the gas that electrochemical reaction produces through exhaust outlet 4 simultaneously, in electrolyte blowback housing 12 cavitys 13 after will filtering simultaneously, realize recycling of electrolyte, after stopping the battery use, stop immersed pump 19 work, then the electrolyte in battery container 12 cavitys 13 is through inlet 14, pipeline 18, immersed pump 19 enters in the low level liquid-filling pool 2 naturally, eliminate self-discharge phenomenon, improve the battery service efficiency, prolong battery useful life, as Fig. 1.

Described housing 12 is made as arranged side by side a plurality of, to constitute battery pack, and each housing 12 inlet 14 links to each other with house steward 21 by being in charge of 20, house steward 21 is by three-way pipe 16 and valve 15,17 are communicated with liquid-filling pool 2 drain pipes 18 and the feed tube 5 of below respectively, liquid pump 22 is set on the drain pipe 18, each housing 12 liquid outlet 6 links to each other with house steward 24 by being in charge of 23, house steward 24 is communicated with liquid-filling pool 2 feed tubes 5 of below, with with the electrolyte of each housing 12 cavity 13 through being in charge of 23, house steward 24, feed tube 5 is sent in the liquid-filling pool 2, and the electrolyte after filtering is through liquid pump 22, drain pipe 18, valve 17, three-way pipe 16, house steward 21, be in charge of in 20 each housing 12 cavity 13 of difference blowback, realize recycling of electrolyte, after stopping the battery use, by being in charge of 20, house steward 21, three-way pipe 16 and valve 15 enter the electrolyte in each battery container 12 cavity 13 in the low level liquid-filling pool 2 naturally through feed tube 5, eliminate self-discharge phenomenon, improve the battery service efficiency, prolong battery useful life, as Fig. 2.

Claims

1. the metal-air cell of an electrolyte equalization cycle, comprise on it bring into, liquid outlet, the housing of band cavity in it, and the air electrode on the housing, contain the electrolyte in the housing cavity, insert the metal electrode in the electrolyte, it is characterized in that below housing, being provided with liquid-filling pool, the housing liquid outlet is communicated with the inlet of liquid-filling pool by pipeline, and the housing inlet is communicated with the liquid-filling pool liquid outlet by pipeline.

2. the metal-air cell of electrolyte equalization cycle according to claim 1 is characterized in that screen pack is set in the described liquid-filling pool at interval, and the liquid-filling pool bottom is provided with slag-drip opening, and the top is provided with exhaust outlet.

3. the metal-air cell of electrolyte equalization cycle according to claim 1 is characterized in that in the described liquid-filling pool immersed pump being set, and links to each other with pipeline one end that passes the liquid-filling pool liquid outlet, and the pipeline other end links to each other with the housing inlet.

4. the metal-air cell of electrolyte equalization cycle according to claim 1 is characterized in that the pipeline of described connection housing inlet and liquid-filling pool liquid outlet is provided with liquid pump.

5. the metal-air cell of electrolyte equalization cycle according to claim 1, it is arranged side by side a plurality of to it is characterized in that described housing is made as, and the inlet of each housing is communicated with by being in charge of with the liquid-filling pool liquid outlet of below, and the liquid outlet of each housing is communicated with by being in charge of with the liquid-filling pool inlet of below.

6. the metal-air cell of electrolyte equalization cycle according to claim 5, it is characterized in that described each housing inlet links to each other by being in charge of with house steward, house steward is communicated with the liquid-filling pool liquid outlet and the inlet of below respectively by three-way pipe, pipeline and valve, and on the pipeline that connects housing inlet and liquid-filling pool liquid outlet, be provided with liquid pump, each housing liquid outlet links to each other by being in charge of with house steward, and house steward is communicated with the liquid-filling pool inlet of below.