CN101286548A

CN101286548A - Lead acid accumulator free of charging liquid by filtering for separation of vapor and cooling for reflux of evaporated water

Info

Publication number: CN101286548A
Application number: CNA2008100617400A
Authority: CN
Inventors: 王宝根
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-19
Filing date: 2008-05-19
Publication date: 2008-10-15
Anticipated expiration: 2028-05-19
Also published as: CN100557854C

Abstract

The invention relates to a liquid-adding-free lead-acid storage battery used for the filtration and separation of steam and evaporative water and the cooling backflow of the evaporated water, which includes a battery case, a case cover, a uni-directional safety valve and electrolyte in an acid liquor trough, etc. and is characterized in that: a condensing plate is arranged below the case cover, a backflow clapboard is arranged below the condensing plate, and a venting backflow hole is opened at the center of the backflow clapboard. The condensing plate is formed by a series of capillaries which are arrayed in the shape of a honeycomb, the sections of the capillaries are regular hexagons, and two thirds volume of cooling fluid is added into the capillaries. Mixed gas formed by water vapour and other gases runs out of the venting backflow hole and is cooled by the cooling fluid, then the water vapour is condensed at the lower part of the capillary and the non-condensable gases are discharged by the uni-directional safety valve after reaching certain pressure; when reaching a certain amount, the water content in the capillary drops off and flows back to the acid fluid trough so as to achieve the aim of avoiding the loss of volume after the loss of water. The storage battery automatically re-condenses the water content evaporated in the use process of the battery and leads the condensed water content to flow back into the electrolyte, thus prolonging the service life of the storage battery, having simple maintenance due to adding no liquid, and being applicable to electric bicycles.

Description

The lead acid accumulator free of liquid feeding of boil-off gas water filtration separation, evaporation water cooling for reflux

Technical field

The present invention relates to a kind of lead acid accumulator, especially a kind of boil-off gas water filtration separation that heating produces when being used for will the charging of electric bicycle, the lead acid accumulator free of liquid feeding of evaporation water cooling for reflux.

Background technology

Lead acid accumulator uses on numerous application places such as electric bicycle storage battery because it is cheap, raw material are easy to obtain, use sufficient reliability is arranged.Lead acid accumulator is an electrolysis of utilizing positive and negative pole plate and electrolyte, reach the effect that discharges and recharges, in the process of electrolysis, can produce a large amount of heats, make electrolyte owing to evaporation reduces, and the charging latter stage water can be decomposed into hydrogen, carrier of oxygen is separated out, this just needs the user to carry out maintenances such as liquid feeding in use for some time, brings inconvenience.The battery that is used for electric bicycle at present mainly contains three classes, i.e. valve controlled sealed lead-acid accumulator, nickel-cadmium cell and Ni-MH battery.The valve controlled sealed lead-acid accumulator use cost is low, capacity is big, is generally adopted by domestic enterprise.The main cause that influences service life of lead accumulator is the sulfuration and the dehydration of pole plate, because the deficiency of sealing technology, valve controlled sealed lead-acid accumulator still has the gas leakage phenomenon when normal the use, meanwhile moisture has also been drained inevitably, particularly battery is overcharging in the recurrent environment of phenomenon, water loss speeds up in the battery, is easy to cause in the lead-acid battery dry up, and forms short circuit then capacity is disappeared reduction of service life.

Summary of the invention

Purpose of the present invention will solve above-mentioned existing lead acid accumulator problem exactly, a kind of boil-off gas water filtration separation that when charging heating can be produced, the lead acid accumulator free of liquid feeding of evaporation water cooling for reflux are provided, its long service life, safeguard simple, be applicable to electric bicycle.

The object of the present invention is achieved like this: the lead acid accumulator free of liquid feeding of a kind of boil-off gas water filtration separation, evaporation water cooling for reflux, it comprises positive negative terminal and one-way relief valves on battery case, lid, the lid, positive/negative plate group, insulating barrier, bus-bar and electrolyte in the acid storage, be characterized in: a cold plate is arranged in the battery case under lid, cold plate outer wall and battery case inwall closely cooperate, a backflow dividing plate is arranged above the acid storage under cold plate, and the return port of giving vent to anger is opened in backflow dividing plate center.

Above-mentioned cold plate is that orthohexagonal capillary is honeycomb arrangement by a series of cross sections, and internal diameter capillaceous is set to 0.5mm～3.5mm, the pre-cooling fluid that adds 2/3rds pipe inner capacitiess in capillary.Select dilute sulfuric acid as cooling fluid, can make battery contain more dilute sulfuric acid reserves.

The present invention is work like this: when lead acid battery charge or use, the savings or release energy, can produce a large amount of heats in the chemical reaction process, make the electrolyte evaporation in the acid storage, the gaseous mixture of the gas composition that is produced by water vapour and electrolysis is run out of from the return port of giving vent to anger of backflow dividing plate, then contact capillary, cooled off by the cooling fluid of capillary inside, wherein water vapour generation condensation accumulates in bottom capillaceous, gas that can condensation then emits by one-way relief valves after reaching certain pressure, just can drip after a certain amount of when the moisture in the capillary reaches, and be back in the acid storage, reach with this and avoid the purpose of turning pale after the dehydration.

The beneficial effect of lead acid accumulator free of liquid feeding of the present invention is:

Can obtain cooling when 1) evaporation water that produces owing to heating in charge and discharge process is by coldplate, condensing reflux reduces the loss of the interior moisture of battery in electrolyte again, and the trouble of having removed liquid feeding from has increased its useful life simultaneously.

2) gases such as hydrogen that produce in the battery in using when cooling, can obtain filtering with moisture from, when reaching certain air pressure gas release is gone out battery case, guarantee that the safety of battery can not exploded.

Description of drawings

Fig. 1 is the structural representation of lead acid accumulator of the present invention;

Fig. 2 is the enlarged drawing of the node I among Fig. 1;

Fig. 3 is the A-A cutaway view among Fig. 2;

As follows to the label declaration in each width of cloth accompanying drawing: the 1-one-way relief valves; The positive negative terminal of 2-; The 3-lid; The 4-cold plate; The 4a-capillary; 5-backflow dividing plate; The 5a-return port of giving vent to anger; The 6-bus-bar; The 7-battery case; The 8-acid storage; 9-positive/negative plate group; The 10-insulating barrier; The 11-cooling fluid.

Embodiment

The structure that with reference to the accompanying drawings lead acid accumulator free of liquid feeding of the present invention is proposed is described in detail below.

As shown in Figure 1, it comprises positive negative terminal 2 and one-way relief valves 1 on battery case 7, lid 3, the lid 3, positive/negative plate group 9, insulating barrier 10, bus-bar 6 and electrolyte in the acid storage 8, in 3 times battery cases 7 of lid, a cold plate 4 is arranged, cold plate 4 outer walls and battery case 7 inwalls closely cooperate, above 4 times acid storages 8 of cold plate a backflow dividing plate 5 is arranged, the return port 5a that gives vent to anger is opened in heart position therein.

Shown in Fig. 2 and 3, cold plate 4 is that orthohexagonal capillary 4a is honeycomb arrangement by a series of cross sections, the internal diameter of capillary 4a is set to 0.5mm～3.5mm, the pre-cooling fluid 11 that adds 2/3rds pipe inner capacitiess in capillary 4a, because capillarity, the cooling fluid 11 in the pipe can not fall down.

When lead acid battery charge is put aside energy or normally used, releasing energy, can produce a large amount of heats in the chemical reaction process rises internal temperature, make the electrolyte evaporation in the acid storage 8, the mist of the gas composition that is produced by water vapour and electrolysis is run out of from the return port 5a that gives vent to anger of backflow dividing plate 10, mist contacts capillary 4a subsequently, cooled off by the cooling fluid of capillary 4a inside, wherein water vapour generation condensation accumulates in the bottom of capillary 4a, because it is logical that capillary 4a is two, gas that can condensation, can go to cold plate 4 top lids 3 belows, realization separates with moisture content, and gas emits by one-way relief valves 1 after reaching certain pressure.When the moisture in the capillary 4a reach a certain amount of after, as long as slight vibrations just can drip, and be back in the acid storage 8, certain vibrations are just arranged when riding for electric bicycle.

The present invention selects dilute sulfuric acid as cooling fluid, can make battery contain more dilute sulfuric acid reserves, condensed water can be when refluxing with a spot of dilute sulfuric acid band under, the loss that replenishes electrolyte, reach and avoid the purpose of turning pale after the dehydration, and incondensable gas can isolated by filtration be discharged the safety that guarantees battery.

Claims

1, a kind of boil-off gas water filtration separates, the lead acid accumulator free of liquid feeding of evaporation water cooling for reflux, it comprises battery case (7), lid (3), positive negative terminal (2) on the lid (3) and one-way relief valves (1), positive/negative plate group (9) in the acid storage (8), insulating barrier (10), bus-bar (6) and electrolyte, it is characterized in that: described lid (3) has a cold plate (4) in the battery case (7) down, cold plate (4) outer wall and battery case (7) inwall closely cooperate, a backflow dividing plate (5) is arranged acid storage (8) top down at cold plate (4), open the return port of giving vent to anger (5a) in backflow dividing plate (5) center.

2, lead acid accumulator free of liquid feeding according to claim 1, be characterized in: described cold plate (4) is that orthohexagonal capillary (4a) is honeycomb arrangement by a series of cross sections, the internal diameter of capillary (4a) is set to 0.5mm～3.5mm, the pre-cooling fluid (11) that adds 2/3rds pipe inner capacitiess in capillary (4a).

3, lead acid accumulator free of liquid feeding according to claim 2 is characterized in: described cooling fluid (11) is a dilute sulfuric acid.