CN201207396Y

CN201207396Y - Lead acid batteries free of charging liquid by filtering for separation of vapor from water and cooling for reflux of evaporated water

Info

Publication number: CN201207396Y
Application number: CNU2008200873718U
Authority: CN
Inventors: 王宝根
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-19
Filing date: 2008-05-19
Publication date: 2009-03-11
Anticipated expiration: 2018-05-19

Abstract

The utility model discloses a non liquid lead-acid storage battery for vaporizing water to filter and separate, cool and regurgitate, which is composed of a battery box, a box cover, a unidirectional safety valve and electrolyte in an acid liquid flume. The storage battery is characterized in that a cooling plate is arranged under the box cover; a regurgitate clapboard is arranged under the cooling plate, and a gas outlet regurgitant hole is arranged in the center of the regurgitant clapboard. The cooling plate is composed of a plurality of capillaries with regular hexagon sections which are arranged in honeycomb shape, and two thirds volume capacity cooling liquid is filled in the capillaries. The mixture gas which is mixed by water vapor and other gases can be outputted from the gas-out regurgitant hole and can be cooled by the cooling liquid, the water vapor can be condensed at the lower part of the capillaries, non-condensed gases can be exhausted through the unidirectional safety valve under certain pressure, the water in the capillaries can be dripped down when reaching certain quantity and can be regurgitated in the acid liquid flume, so as to avoid capacitance loss after the water loss. The utility model can make the water which is evaporated in the process of battery using renewedly condensed to be regurgitated in the electrolyte, so as to prolong the service life of the battery, has simple non liquid-adding maintenance; thus being applied 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 utility model 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

The purpose of this utility model 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 purpose of this utility model is achieved in that 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 utility model 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 the utility model lead acid accumulator free of liquid feeding 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 the utility model lead acid accumulator free of liquid feeding;

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

Embodiment

The structure that with reference to the accompanying drawings the utility model lead acid accumulator free of liquid feeding 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 utility model 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, replenish the loss of 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.