CN203445164U - Sealing cover of maintenance-free lead-acid battery and maintenance-free lead-acid battery - Google Patents
Sealing cover of maintenance-free lead-acid battery and maintenance-free lead-acid battery Download PDFInfo
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- CN203445164U CN203445164U CN201320471422.8U CN201320471422U CN203445164U CN 203445164 U CN203445164 U CN 203445164U CN 201320471422 U CN201320471422 U CN 201320471422U CN 203445164 U CN203445164 U CN 203445164U
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- maintenance
- tank circuit
- free lead
- liquid hole
- lead accumulator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a sealing cover of a maintenance-free lead-acid battery and the maintenance-free lead-acid battery. The sealing cover comprises a first cover plate, a second cover plate and a voltage-limiting device, wherein a liquid hole and a first slot way communicated with the liquid hole are formed in the first cover plate; a liquid hole plug matched with the liquid hole and a second slot way matched with the first slot way to form an access are formed in the second cover plate, and a gap communicated with the second slot way is formed in the liquid hole plug; and the voltage-limiting device is arranged at the tail end of the access formed through matching of the first and second slot ways. The maintenance-free lead-acid battery comprises the sealing cover provided with a gas-liquid conversion chamber, and oxygen and hydrogen generated by positive and negative plates of the battery can be compounded into water in the gas-liquid conversion chamber for backflow, so that gases and sulfuric acid drops of the battery can be effectively prevented from spilling, the water loss during charging is less, adequate battery electrolytes can be guaranteed, and the recycling service life of the battery can be prolonged.
Description
Technical field
The utility model relates to Lead-acid Battery Technology field, particularly a kind of maintenance-free lead accumulator closing cap and maintenance-free lead accumulator.
Background technology
For traditional lead acid accumulator (claiming again conventional accumulators), its electrode is to consist of plumbous and plumbous oxide, and the grid frame of pole plate is manufactured by lead-antimony alloy conventionally, and electrolyte is sulphur aqueous acid, and major advantage is voltage stabilization and low price.In general, traditional lead acid accumulator comprises the battery cell body for electrodes, dividing plate and electrolyte, and be positioned on described battery cell body, be provided with the devices such as closing cap of liquid hole and vent plug, be provided with the battery closing cap of traditional through type vent plug as shown in Figure 1, Fig. 1 is the structural representation that is provided with the battery closing cap of traditional through type vent plug, wherein, 11 is closing cap; 12 is liquid hole, does not mark vent plug in Fig. 1, described liquid hole and vent plug be mainly used in annotating electrolyte and emission gases.Traditional lead acid accumulator can cause moisture to reduce in a large number when electrolysis, produce hydrogen and oxygen, sulfuric acid overflows in company with gas together with the form of droplet simultaneously, so need regularly to detect and battery maintenance, make electrolyte remain on suitable level, thereby guarantee the normal operation of battery.Yet owing to need to making regular check on the height of electrolyte and adding distilled water, there is short and regular maintenance in the useful life shortcoming such as frequent in traditional lead acid accumulator.In view of this, various types of lead acid accumulators are all towards future developments such as non-maintaining and closures.
At present, the grid frame that maintenance-free lead accumulator adopts lead-calcium alloy to make conventionally, the water decomposition amount producing during charging is less, and water evaporation quantity is low; Battery case adopts hermetically-sealed construction, on battery closing cap, is provided with safety valve, and the sulfuric acid gas discharging also seldom.Traditional sealed maintenance-free lead acid battery is barren liquor type, be without the electrolyte that flows in battery, the glass fibre separator (AGM dividing plate) using not exclusively adsorbs sulfuric acid electrolyte, object is to make oxygen that accumulator anode board produces in the course of the work the aperture by AGM dividing plate is diffused into negative plate from positive plate, and water generation reaction there, to avoid storage battery because of scrapping that dehydration causes.
But, for above-mentioned traditional barren liquor type maintenance-free lead-acid, when oxygen and hydrogen incomplete reaction, gas will be discharged from storage battery, sulfuric acid also overflows the form with droplet in company with gas together, make storage battery that early stage electrolyte solution loss occur, shortened the service life cycle of storage battery.
Utility model content
In order to solve above technical problem, the utility model provides a kind of maintenance-free lead accumulator closing cap and maintenance-free lead accumulator, the maintenance-free lead accumulator when charging fluid loss that comprises the closing cap that the utility model provides is less, can extend the service life cycle of storage battery.
The utility model provides a kind of maintenance-free lead accumulator closing cap, comprising:
The first cover plate, first tank circuit that is provided with liquid hole on described the first cover plate and communicates with described liquid hole;
The second cover plate, is provided with the vent plug matching with described liquid hole and coordinates with described first tank circuit second tank circuit that forms path on described the second cover plate, be provided with the gap communicating with described second tank circuit on described vent plug;
Pressure limiting device, described pressure limiting device is arranged on described first tank circuit coordinates the path forming end with second tank circuit.
Preferably, described first tank circuit comprises two grooves that communicate above, and the total length of described first tank circuit is greater than 400mm.
Preferably, described first tank circuit is symmetrical with respect to liquid hole, take position, described liquid hole as in, the degree of depth of described first each groove of the tank circuit from inside to outside shoals gradually.
Preferably, described vent plug comprises the outer core setting gradually, inner core, and described outer core and inner core form inner sandwich layer, and described inner in-core communicates with liquid hole;
On described outer core, be provided with the outer core gap communicating with described second tank circuit, be provided with inner core gap on described inner core, described inner sandwich layer communicates with described liquid hole by inner core gap.
Preferably, the width in the Yu Lixin gap, outer core gap of described vent plug is 2mm ± 0.2mm, and length is 20mm ± 2mm.
Preferably, described pressure limiting device comprises having the cover plate of steam vent and be arranged at the diaphragm seal on described cover plate.
The utility model also provides a kind of maintenance-free lead accumulator, comprising:
Battery cell body, is placed with pole plate, electrolyte and dividing plate in described battery cell body;
Be positioned at the maintenance-free lead accumulator closing cap mentioned above on described battery cell body.
Preferably, in described battery cell body, the high 30mm ± 10mm in position of pole plate described in the aspect ratio of described electrolyte.
Compared with prior art, the maintenance-free lead accumulator that the utility model provides comprises: battery cell body, is placed with pole plate, electrolyte and dividing plate in described battery cell body; With the maintenance-free lead accumulator closing cap being positioned on described battery cell body.Wherein, described maintenance-free lead accumulator closing cap comprises: be provided with the first cover plate of liquid hole and first tank circuit, described first tank circuit communicates with liquid hole; Be provided with the second cover plate of vent plug and second tank circuit, described vent plug matches with liquid hole, is provided with the gap communicating with second tank circuit on described vent plug, and described second tank circuit coordinates formation path with first tank circuit; And be arranged on described first tank circuit coordinates the end of the path forming pressure limiting device with second tank circuit.In charging process, the oxygen that described maintenance-free lead accumulator produces and hydrogen and the gap of sulfuric acid droplets wherein from liquid hole along vent plug spill into path, pass through again the path of certain length, sulfuric acid droplets is condensed and the liquid of gas chemical combination can flow to from the end of path liquid hole, finally flows in storage battery and is recycled.Wherein, the resistance to certain pressure of pressure limiting device that the end of path arranges, can make gas fully compound.The gas that storage battery produces in charging process is through described pressure limiting device, and when air accumulation to pressure is greater than in limited time, gas can be discharged; When pressure is not more than in limited time, under the effect of pressure limiting device, oxygen, hydrogen composition generation water that storage battery produces, be back in battery to recycle, simultaneously also for condition has been created in the sedimentation of sulfuric acid droplets.
That is to say, the gap of the vent plug of maintenance-free lead accumulator closing cap described in the utility model and vent plug to the path between pressure limiting device has formed a gas-liquid conversion chamber, the oxygen that accumulator positive, negative plate can be generated, hydrogen are at the useful space composition generation water of certain pressure, and reflux cycle is used.Therefore, the utility model can effectively avoid the gas of storage battery and sulfuric acid droplets to overflow battery, and during charging, fluid loss is less, thereby guarantees that battery liquid is sufficient, extends the service life cycle of storage battery.
Further, maintenance-free lead accumulator described in the utility model adopts pregnant solution type structure, keeps rich solution state, is also beneficial to and guarantees that battery liquid is sufficient.
Accompanying drawing explanation
Fig. 1 is the structural representation that is provided with the battery closing cap of traditional through type vent plug;
The structural representation front view of the maintenance-free lead accumulator closing cap that Fig. 2 provides for the utility model embodiment;
The structural representation of the vent plug AA that Fig. 3 provides for the utility model embodiment;
The structural representation end view of the maintenance-free lead accumulator closing cap that Fig. 4 provides for the utility model embodiment;
The structural representation of the pressure limiting device B that Fig. 5 provides for the utility model embodiment;
The schematic diagram of the maintenance-free lead accumulator that Fig. 6 provides for the utility model embodiment.
Embodiment
In order further to understand the utility model, below in conjunction with embodiment, the utility model preferred embodiment is described, but should be appreciated that these are described is for further illustrating feature and advantage of the present utility model, rather than the restriction to the utility model claim.
The utility model provides a kind of maintenance-free lead accumulator closing cap, comprising:
The first cover plate, first tank circuit that is provided with liquid hole on described the first cover plate and communicates with described liquid hole;
The second cover plate, is provided with the vent plug matching with described liquid hole and coordinates with described first tank circuit second tank circuit that forms path on described the second cover plate, be provided with the gap communicating with described second tank circuit on described vent plug;
Pressure limiting device, described pressure limiting device is arranged on described first tank circuit coordinates the path forming end with second tank circuit.
The maintenance-free lead accumulator closing cap that the utility model provides has the gas-liquid conversion chamber consisting of the first cover plate, the second cover plate and pressure limiting device, space and the length of the utility model appropriate design gas-liquid conversion chamber, restriction certain pressure, the gas producing while making charge in batteries is compound in described gas-liquid conversion chamber, and emission gases during superpressure, the gas that has changed so existing barren liquor type battery moves compound gas recombination mode by partition pores, fluid loss in the time of reducing maintenance-free lead accumulator charging, thereby the service life cycle of prolongation storage battery.
The structure of the maintenance-free lead accumulator closing cap that the utility model embodiment provides is referring to Fig. 2, the structural representation front view of the maintenance-free lead accumulator closing cap that Fig. 2 provides for the utility model embodiment.In Fig. 2, A is liquid hole, and B is pressure limiting device, and D is that first tank circuit and second tank circuit coordinate the path forming.
In the utility model, described maintenance-free lead accumulator closing cap comprises the first cover plate, first tank circuit that is provided with liquid hole A on it and communicates with liquid hole A.
Described maintenance-free lead accumulator closing cap comprises the second cover plate, on it, be provided with vent plug and second tank circuit, on described vent plug, be provided with the gap communicating with described second tank circuit, described vent plug matches with liquid hole A, and described second tank circuit coordinates formation path D with first tank circuit.
In charging process, the oxygen that described maintenance-free lead accumulator produces and hydrogen and the gap of sulfuric acid droplets wherein from liquid hole A along vent plug spill into path D, pass through again the path D of certain length, sulfuric acid droplets is condensed and the liquid of gas chemical combination can flow to from the end of path D liquid hole A, finally flows in storage battery and is recycled.
In the utility model, apertured vent plug is set and matches with liquid hole A.The structure of described vent plug is referring to Fig. 3, the structural representation of the vent plug AA that Fig. 3 provides for the utility model embodiment.In the vent plug AA shown in Fig. 3,31 is outer core, and 32 is inner core, and 33 is outer core gap, and 34 is inner core gap.
In an embodiment of the present utility model, vent plug AA comprises outer core 31, the inner core 32 setting gradually, and sandwich layer in outer core 31 forms with inner core 32, communicates with liquid hole A in inner core 32;
On outer core 31, be provided with the outer core gap 33 communicating with described second tank circuit, be provided with inner core gap 34 on inner core 32, described inner sandwich layer communicates by inner core gap 34Yu Ye hole A.
In charging process, the oxygen that storage battery produces and hydrogen and sulfuric acid droplets wherein spill in path D to outer core gap 33 along core gap 34 vent plug AA from liquid hole A.
The utility model is not particularly limited the gap size of described vent plug, and in an embodiment of the present utility model, the width in the Yu Lixin gap, outer core gap of described vent plug is 2mm ± 0.2mm, and length is 20mm ± 2mm.The width in the Yu Lixin gap, outer core gap of described vent plug can be different, and length also can be different, as the length in outer core gap can be shorter than the length in inner core gap.The utility model is not particularly limited the diameter of described liquid hole and vent plug, according to the diameter in existing liquid hole, this area.
In the utility model, path D be described vent plug to the gas circuit between pressure limiting device, by first tank circuit, coordinate and form with second tank circuit; Described first tank circuit is arranged on the first cover plate, and A communicates with liquid hole; Described second tank circuit is arranged on the second cover plate, communicates with the gap on vent plug.That is to say, arranging of the groove of the groove of described first tank circuit and second tank circuit is identical, the corresponding path that becomes, can make gas and the liquid gap from liquid hole along vent plug spill into wherein, and described gas is combined into water therein, together flow to liquid hole with described liquid, finally flow in storage battery.
In the utility model, described first tank circuit preferably includes two grooves that communicate above, more preferably comprises ten grooves that communicate above; The total length of described first tank circuit is preferably greater than 400mm.In an embodiment of the present utility model, described first tank circuit comprises 27 grooves that communicate, and total length is greater than 400mm, forms so the tortuous path of certain length, is beneficial to and carries out gas-liquid conversion.
In the utility model, described first tank circuit is preferably symmetrical with respect to liquid hole; The width of described first each groove of the tank circuit is preferably identical, is convenient to processing, and it is all preferably 3mm ± 0.5mm; The degree of depth of described first each groove of the tank circuit can be identical, is all preferably 15mm ± 5mm, also can be different.In an embodiment of the present utility model, described first tank circuit is symmetrical with respect to liquid hole, take position, described liquid hole as in, the degree of depth of described first each groove of the tank circuit from inside to outside shoals gradually; The degree of depth of each groove from inside to outside can reduce gradually in the scope of 15mm ± 5mm.Referring to Fig. 4, the structural representation end view of the maintenance-free lead accumulator closing cap that Fig. 4 provides for the utility model embodiment.In Fig. 4, the groove that C is outermost end.; the utility model embodiment be take liquid hole as lowest surfaces, with the outermost end of first tank circuit for the highest, the formation slope, bottom in path; be conducive to like this sulfuric acid droplets and solidify with the liquid of gas chemical combination from outer end, path along slope current to liquid hole, finally flow into storage battery and be recycled.
In the utility model, for making gas fully compound, described maintenance-free lead accumulator closing cap comprises pressure limiting device B, and it is arranged on described first tank circuit coordinates the path D forming end with second tank circuit.The structure of described pressure limiting device is referring to Fig. 5, the structural representation of the pressure limiting device B that Fig. 5 provides for the utility model embodiment.In the pressure limiting device B shown in Fig. 5,51 is cover plate, and 52 is steam vent, and 53 is diaphragm seal.
In an embodiment of the present utility model, pressure limiting device B comprises having the cover plate 51 of steam vent 52 and be arranged at the diaphragm seal 53 on cover plate 51.
In pressure limiting device B, the size of steam vent 52 is according to the size of the existing steam vent in this area.The diameter of diaphragm seal 53 is preferably 10mm ± 2mm, and thickness is preferably 5mm ± 2mm; Material can be PP or PE; Compressive resistance is preferably 15mm water column, and gas flow is preferably 500mL/min ± 50mL/min.
The gas that storage battery produces in charging process is through pressure limiting device B, and when air accumulation to pressure is greater than above higher limit, gas can be discharged; When pressure is not more than described higher limit, under the effect of pressure limiting device, oxygen, hydrogen composition generation water that storage battery produces, be back in battery to recycle, simultaneously also for condition has been created in the sedimentation of sulfuric acid droplets.
In the utility model, described the first cover plate, the second cover plate, vent plug and pressure limiting device all adopt the conventional material in this area to make, and size can arrange according to actual requirement.The utility model embodiment can the first cover plate be large lid, take the second cover plate as tegillum, and tegillum is placed on large lid.Described vent plug and pressure limiting device can with the one-body molded processing of corresponding cover plate, also can process again and assemble separately.
In sum, in maintenance-free lead accumulator closing cap described in the utility model, the gap of vent plug and vent plug to the path between pressure limiting device has formed a gas-liquid conversion chamber, the oxygen that accumulator positive, negative plate can be generated, hydrogen are at the useful space composition generation water of certain pressure, and reflux cycle is used.Therefore, the utility model can effectively avoid the gas of storage battery and sulfuric acid droplets to overflow battery, and during charging, fluid loss is less, thereby guarantees that battery liquid is sufficient, extends the service life cycle of storage battery.
The utility model also provides a kind of maintenance-free lead accumulator, comprising:
Battery cell body, is placed with pole plate, electrolyte and dividing plate in described battery cell body;
Be positioned at the maintenance-free lead accumulator closing cap mentioned above on described battery cell body.
The maintenance-free lead accumulator that the utility model provides comprises closing cap mentioned above, the problem of the early stage capacitance loss that the dilute sulfuric acid electrolyte that has solved existing maintenance free cell causes because of dehydration, during charging, fluid loss is less, thereby has longer service life cycle.
The maintenance-free lead accumulator that the utility model embodiment provides is referring to Fig. 6, the schematic diagram of the maintenance-free lead accumulator that Fig. 6 provides for the utility model embodiment.In Fig. 6,61 is battery cell body, and 62 is maintenance-free lead accumulator closing cap.
In the utility model, described maintenance-free lead accumulator comprises battery cell body 61, is placed with pole plate, electrolyte and dividing plate in it.The utility model is not particularly limited the material of described battery cell body and size, the pole plate of placing in described battery cell body, electrolyte and dividing plate adopt this area to commonly use, the utility model there is no particular restriction, as adopted the conventional sulfuric acid electrolyte in this area.
In battery cell body 61, the high 30mm ± 10mm of location optimization of pole plate, is pregnant solution type described in the aspect ratio of described electrolyte; Described dividing plate is preferably PE dividing plate, and oxygen channel in dividing plate is stopped up.The utility model preferably adopts pregnant solution type structure, keeps rich solution state, is beneficial to and guarantees that battery liquid is sufficient.
In the utility model, described maintenance-free lead accumulator comprises maintenance-free lead accumulator closing cap 62.Described maintenance-free lead accumulator closing cap is closing cap mentioned above, there is gas-liquid conversion chamber, oxygen, the hydrogen that positive and negative pole plate can be generated are combined into water in the useful space of this certain pressure, and reflux cycle is used, thereby extend the service life cycle of storage battery.
In order further to understand the utility model, the maintenance-free lead accumulator closing cap and the maintenance-free lead accumulator that the utility model are provided below in conjunction with embodiment are specifically described.
Embodiment 1
As shown in Figure 6, anode plate for lead acid accumulator and negative plate, PE dividing plate are placed in battery cell body 61 and are assembled, pour into electrolyte, add maintenance-free lead accumulator closing cap 62, make 12V, 100Ah with the maintenance-free lead accumulator of gas-liquid conversion chamber pregnant solution type.
Wherein, the lead plaster of manufacture positive plate comprises 5wt% sulfuric acid, the water of 15wt%, the graphite powder of the short fiber of 0.1wt%, 0.05wt%, the lead powder of the ptfe emulsion of 0.05wt% and surplus; The Al of Sn, 0.05wt% that the lead alloy of manufacture positive plate comprises 0.1wt%Ca, 0.15wt% is, the Ag of the Bi of 0.04wt%, 0.02wt% and the Pb of surplus.
The high 30mm in position of the aspect ratio pole plate of described electrolyte.
Maintenance-free lead accumulator closing cap 62 comprises: the first cover plate, first tank circuit that is provided with liquid hole A on it and communicates with liquid hole A; The second cover plate, is provided with vent plug AA and second tank circuit on it, be provided with the gap communicating with described second tank circuit on described vent plug, and described vent plug matches with liquid hole A, and described second tank circuit coordinates formation path D with first tank circuit; Pressure limiting device B, it is arranged on described first tank circuit coordinates the path D forming end with second tank circuit.
In maintenance-free lead accumulator closing cap 62, as shown in Figure 3, vent plug AA comprises outer core 31, the inner core 32 setting gradually, and sandwich layer in outer core 31 forms with inner core 32, communicates with liquid hole A in inner core 32; On outer core 31, be provided with the outer core gap 33 communicating with described second tank circuit, be provided with inner core gap 34 on inner core 32, described inner sandwich layer communicates by inner core gap 34Yu Ye hole A.The width in the Yu Lixin gap, outer core gap of described vent plug is 2mm, and length is 20mm.
As shown in Figure 2 and Figure 4, first tank circuit comprises 27 grooves that communicate, and total length is greater than 400mm, and the width of each groove is 3mm; First tank circuit is symmetrical with respect to liquid hole A, take position, described liquid hole as in, the degree of depth of described first each groove of the tank circuit from inside to outside shoals gradually; The degree of depth of each groove from inside to outside reduces gradually in the scope of 15mm ± 5mm.
As shown in Figure 5, pressure limiting device B comprises having the cover plate 51 of steam vent 52 and be arranged at the diaphragm seal 53 on cover plate 51.The diameter of diaphragm seal 53 is 10mm, and thickness is 5mm; Material is PE; Compressive resistance is 15mm water column, and gas flow is 500mL/min.
According to CNS < < lead-acid starter battery part 1: technical conditions and test method > > GB/T5008.1-2013, to the test of charging of described maintenance-free lead accumulator, charging system is complete rechargeable battery, with 14.4V ± 0.05V constant voltage charge 500h.Test result demonstration, charging test fluid loss is 0.2g/Ah.
Comparative example 1
Anode plate for lead acid accumulator and negative plate, PE dividing plate are placed in battery cell body and are assembled, pour into electrolyte, add the battery closing cap that is provided with traditional through type vent plug, make 12V, 100Ah with the maintenance-free lead accumulator of through type vent plug pregnant solution type.
Wherein, lead plaster, the lead alloy of manufacture positive plate are all identical with lead plaster, lead alloy in embodiment 1.
The high 30mm in position of the aspect ratio pole plate of described electrolyte.
Be provided with the battery closing cap of traditional through type vent plug as shown in Figure 1.
According to the method in embodiment 1, to the test of charging of described maintenance-free lead accumulator.Test result demonstration, charging test fluid loss is 1.03g/Ah.
From above embodiment and comparative example, when the maintenance-free lead accumulator that the utility model embodiment provides charges, fluid loss is less.Show the gas recombination Cheng Shui that the gas-liquid conversion chamber in the utility model produces charge in batteries, be back to storage battery and recycle, thereby make the fluid loss of storage battery lower, the early time discards loss of having avoided storage battery to cause because of dehydration.
The explanation of above embodiment is just for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection range of the utility model claim.
Claims (8)
1. a maintenance-free lead accumulator closing cap, comprising:
The first cover plate, first tank circuit that is provided with liquid hole on described the first cover plate and communicates with described liquid hole;
The second cover plate, is provided with the vent plug matching with described liquid hole and coordinates with described first tank circuit second tank circuit that forms path on described the second cover plate, be provided with the gap communicating with described second tank circuit on described vent plug;
Pressure limiting device, described pressure limiting device is arranged on described first tank circuit coordinates the path forming end with second tank circuit.
2. maintenance-free lead accumulator closing cap according to claim 1, is characterized in that, described first tank circuit comprises two grooves that communicate above, and the total length of described first tank circuit is greater than 400mm.
3. maintenance-free lead accumulator closing cap according to claim 2, is characterized in that, described first tank circuit is symmetrical with respect to liquid hole, take position, described liquid hole as in, the degree of depth of described first each groove of the tank circuit from inside to outside shoals gradually.
4. maintenance-free lead accumulator closing cap according to claim 3, is characterized in that, described vent plug comprises the outer core setting gradually, inner core, and described outer core and inner core form inner sandwich layer, and described inner in-core communicates with liquid hole;
On described outer core, be provided with the outer core gap communicating with described second tank circuit, be provided with inner core gap on described inner core, described inner sandwich layer communicates with described liquid hole by inner core gap.
5. maintenance-free lead accumulator closing cap according to claim 4, is characterized in that, the width in the Yu Lixin gap, outer core gap of described vent plug is 2mm ± 0.2mm, and length is 20mm ± 2mm.
6. maintenance-free lead accumulator closing cap according to claim 5, is characterized in that, described pressure limiting device comprises having the cover plate of steam vent and be arranged at the diaphragm seal on described cover plate.
7. a maintenance-free lead accumulator, comprising:
Battery cell body, is placed with pole plate, electrolyte and dividing plate in described battery cell body;
Be positioned at the maintenance-free lead accumulator closing cap described in claim 1～6 any one on described battery cell body.
8. maintenance-free lead accumulator according to claim 7, is characterized in that, in described battery cell body, and the high 30mm ± 10mm in position of pole plate described in the aspect ratio of described electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320471422.8U CN203445164U (en) | 2013-08-02 | 2013-08-02 | Sealing cover of maintenance-free lead-acid battery and maintenance-free lead-acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320471422.8U CN203445164U (en) | 2013-08-02 | 2013-08-02 | Sealing cover of maintenance-free lead-acid battery and maintenance-free lead-acid battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203445164U true CN203445164U (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320471422.8U Withdrawn - After Issue CN203445164U (en) | 2013-08-02 | 2013-08-02 | Sealing cover of maintenance-free lead-acid battery and maintenance-free lead-acid battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103400947A (en) * | 2013-08-02 | 2013-11-20 | 山东瑞宇蓄电池有限公司 | Maintenance-free lead-acid battery closure cap and maintenance-free lead-acid battery |
| CN104241707A (en) * | 2014-08-29 | 2014-12-24 | 卧龙电气集团股份有限公司 | Durable anti-inclination acid-proofing explosive-proof electrolyte-rich starting lead-acid storage battery |
-
2013
- 2013-08-02 CN CN201320471422.8U patent/CN203445164U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103400947A (en) * | 2013-08-02 | 2013-11-20 | 山东瑞宇蓄电池有限公司 | Maintenance-free lead-acid battery closure cap and maintenance-free lead-acid battery |
| CN103400947B (en) * | 2013-08-02 | 2016-02-24 | 山东瑞宇蓄电池有限公司 | Maintenance-free lead accumulator closing cap and maintenance-free lead accumulator |
| CN104241707A (en) * | 2014-08-29 | 2014-12-24 | 卧龙电气集团股份有限公司 | Durable anti-inclination acid-proofing explosive-proof electrolyte-rich starting lead-acid storage battery |
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