CN108550761B - Lead-acid storage battery and exhaust valve assembly thereof - Google Patents
Lead-acid storage battery and exhaust valve assembly thereof Download PDFInfo
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- CN108550761B CN108550761B CN201810643526.XA CN201810643526A CN108550761B CN 108550761 B CN108550761 B CN 108550761B CN 201810643526 A CN201810643526 A CN 201810643526A CN 108550761 B CN108550761 B CN 108550761B
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- 239000002253 acid Substances 0.000 title claims abstract description 80
- 238000001914 filtration Methods 0.000 claims abstract description 29
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 26
- 239000003595 mist Substances 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 13
- 238000012545 processing Methods 0.000 abstract description 11
- 239000007789 gas Substances 0.000 description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 16
- 239000001257 hydrogen Substances 0.000 description 16
- 229910052739 hydrogen Inorganic materials 0.000 description 16
- 239000001301 oxygen Substances 0.000 description 16
- 229910052760 oxygen Inorganic materials 0.000 description 16
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 11
- 230000000694 effects Effects 0.000 description 5
- 150000002431 hydrogen Chemical class 0.000 description 5
- 239000002131 composite material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
- H01M10/12—Construction or manufacture
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuel Cell (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The invention discloses an exhaust valve assembly, which comprises a valve body arranged at the top of a storage battery shell and a plug body which is positioned in an inner cavity of the storage battery and connected to the bottom of the valve body, wherein the middle part of the plug body is provided with a reaction cavity which can contain a catalyst and is communicated with the inner cavity of the storage battery, and the bottom of the reaction cavity is provided with a lower acid filtering sheet; the inside of valve body has the valve pocket, the bottom of valve pocket has the air flue that is linked together with the battery inner chamber, the middle part of air flue is provided with well acid filtering piece, the top of valve pocket is provided with the cover plate, the cover plate with be provided with between the well acid filtering piece and strain the acid filtering piece, just have the intercommunication on the valve body the gas vent of valve pocket and external environment. The exhaust valve assembly has higher processing precision, and can effectively reduce the water loss and the acid mist discharge amount in the working process of the lead-acid storage battery. The invention also discloses a lead-acid storage battery applying the exhaust valve assembly.
Description
Technical Field
The invention relates to the technical field of lead-acid storage battery matched components and processes, in particular to an exhaust valve assembly. The invention also relates to a lead-acid storage battery applying the exhaust valve assembly.
Background
The exhaust valve is an important component part of a lead-acid storage battery product, and has the functions of: when the internal gas pressure value of the storage battery rises to a certain value, the exhaust valve is automatically opened to allow the gas to be exhausted; when the internal gas pressure of the storage battery is reduced to a certain value, the exhaust valve is automatically closed, and air is not allowed to enter. The lead-acid storage battery realizes the sealing of the storage battery through the exhaust valve component, realizes the water adding maintenance during the use period, and can also reduce the water loss and the discharge of corrosive acid mist in the use process. Therefore, the advantages and disadvantages of the exhaust valve and the structural characteristics have direct influence on the service life, the environmental protection safety, the practicability and the like of the lead-acid storage battery.
At present, two types of exhaust valves are mainly used for domestic lead-acid batteries: the structure of the exhaust valve is simple and low in cost, but the processing precision is low, the pressure of the opening and closing valve is unstable, and corrosive acid mist is easy to discharge; secondly, the exhaust valve is designed into an independent component and is assembled and connected with the liquid injection hole of the storage battery in a threaded or fastening mode, so that the split valve is commonly called, the exhaust valve with the structure has higher processing precision, the pressure of the opening and closing valve is stable, corrosive acid mist is not easy to discharge, but the two exhaust valve structures have serious water loss phenomena in the actual working process of the storage battery, and the water in the storage battery can be lost too quickly, so that the integral performance and the service life of the storage battery are severely restricted.
Therefore, how to ensure the processing precision of the exhaust valve of the lead-acid storage battery so as to ensure the valve pressure to be more stable, and effectively reduce the water loss and the acid mist discharge amount in the use process of the lead-acid storage battery at the same time is an important technical problem which needs to be solved by the technicians in the field at present.
Disclosure of Invention
The invention aims to provide an exhaust valve assembly, which has higher processing precision and more stable opening and closing valve pressure, and can effectively reduce water loss and acid mist discharge amount in the use process of a lead-acid storage battery. Another object of the invention is to provide a lead-acid battery employing the above exhaust valve assembly.
In order to solve the technical problems, the invention provides an exhaust valve assembly, which comprises a valve body arranged at the top of a storage battery shell and a plug body positioned in an inner cavity of the storage battery and connected to the bottom of the valve body, wherein the middle part of the plug body is provided with a reaction cavity which can contain a catalyst and is communicated with the inner cavity of the storage battery, and the bottom of the reaction cavity is provided with a lower acid filtering sheet;
The inside of valve body has the valve pocket, the bottom of valve pocket has the air flue that is linked together with the battery inner chamber, the middle part of air flue is provided with well acid filtering piece, the top of valve pocket is provided with the cover plate, the cover plate with be provided with between the well acid filtering piece and strain the acid filtering piece, just have the intercommunication on the valve body the gas vent of valve pocket and external environment.
Preferably, a rubber cap is arranged at the upper port of the air passage.
Preferably, the bottom of the valve cavity is provided with a boss, the upper port of the air passage is positioned in the middle of the top surface of the boss, and the rubber cap is sleeved and buckled on the top of the boss.
Preferably, the top of the plug body is provided with a flow guide cavity communicated with the air passage, the side wall of the flow guide cavity is provided with a flow guide hole communicated with the inner cavity of the storage battery, and the flow guide cavity is blocked with the reaction cavity through a partition plate.
Preferably, the axis of the diversion hole is tangential to the inner peripheral wall of the diversion cavity.
Preferably, the bottom of the air passage is provided with an annular air hole communicated with the flow guide cavity.
Preferably, the lower peripheral wall of the valve body has external threads thereon for mating with a battery housing.
Preferably, the top of the valve body is provided with a regular hexagonal prism-shaped screw cap, the middle part of the screw cap is provided with an assembly hole, the upper end of the exhaust port is positioned on the wall of the assembly hole, the bottom of the assembly hole is provided with a spigot matched with the bottom of the cover plate, and the cover plate is embedded in the assembly hole.
Preferably, an annular baffle plate propped against the storage battery shell is arranged on the lower peripheral wall of the nut, and a sealing gasket matched with the storage battery shell is arranged at the bottom of the annular baffle plate.
The invention also provides a lead-acid storage battery, which comprises a storage battery shell and an exhaust valve assembly arranged on the storage battery shell, wherein the exhaust valve assembly is the exhaust valve assembly as set forth in any one of the above.
Compared with the background art, in the working process of the exhaust valve assembly provided by the invention, gases such as hydrogen, oxygen and the like in the storage battery mainly enter the reaction cavity through the lower acid filtering sheet at the bottom of the plug body to react with the catalyst, and water generated after the reaction is gathered on the inner wall of the reaction cavity and flows back into the storage battery through the bottom of the plug body, so that the water loss in the storage battery is reduced, and the sufficient water in the storage battery is ensured; meanwhile, the surplus hydrogen and oxygen in the storage battery are directly communicated into the valve cavity through the air passage, acid mist in the gas is effectively reduced through treatment of the middle acid filtering sheet and the upper acid filtering sheet in sequence, and then the gas is discharged to the external environment through the exhaust port. The exhaust valve assembly effectively reduces water loss and acid mist emission in the storage battery through the cooperative cooperation of the catalyst in the reaction cavity and each acid filtering sheet, so that the overall performance and the service life of the lead-acid storage battery are obviously improved, and meanwhile, a composite valve structure formed by the cooperation of the valve body and the plug body is adopted, so that the processing precision and the structural strength of the whole exhaust valve assembly are effectively ensured, and the use requirement under a high-strength working condition is met.
In another preferred scheme of the invention, a rubber cap is arranged at the upper port of the air passage. In the working process, the rubber cap can reliably seal the upper port of the air passage under the normal working condition so as to prevent gases such as hydrogen, oxygen and the like in the storage battery from being directly communicated into the valve cavity through the upper port of the air passage, thereby ensuring that the gases such as hydrogen, oxygen and the like in the storage battery mainly enter the reaction cavity through the lower acid filtering sheet at the bottom of the plug body to react with the catalyst so as to be converted into water and flow back, and preventing water loss; when the internal air pressure of the accumulator reaches a certain value due to excessive hydrogen and oxygen in the accumulator, the rubber cap is moderately jacked up, so that a gap for air flow to pass through is formed at the matching surface between the rubber cap and the upper port of the air passage, and the excessive hydrogen and oxygen can be directly introduced into the valve cavity through the air passage and are finally discharged to the external environment after acid removal treatment of the middle acid filter sheet and the upper acid filter sheet in sequence.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of a lead-acid battery according to one embodiment of the present invention;
FIG. 2 is a perspective cross-sectional view of the valve body portion of FIG. 1;
FIG. 3 is a schematic perspective view of the plug portion of FIG. 1;
Fig. 4 is a schematic diagram illustrating an assembly structure between an exhaust valve assembly and a battery case according to an embodiment of the present invention.
Detailed Description
The core of the invention is to provide an exhaust valve assembly, which has higher processing precision and more stable opening and closing valve pressure, and can effectively reduce the water loss and acid mist discharge amount in the use process of the lead-acid storage battery; meanwhile, a lead-acid storage battery applying the exhaust valve assembly is provided.
In order to better understand the aspects of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Referring to fig. 1 to 4, fig. 1 is a structural cross-sectional view of a lead-acid battery according to an embodiment of the present invention; FIG. 2 is a perspective cross-sectional view of the valve body portion of FIG. 1; FIG. 3 is a schematic perspective view of the plug portion of FIG. 1; fig. 4 is a schematic diagram illustrating an assembly structure between an exhaust valve assembly and a battery case according to an embodiment of the present invention.
In a specific embodiment, the exhaust valve assembly provided by the invention comprises a valve body 11 arranged at the top of a storage battery shell 31 and a plug body 21 positioned in the inner cavity of the storage battery and connected to the bottom of the valve body 11, wherein the middle part of the plug body 21 is provided with a reaction cavity 211 which can contain a catalyst and is communicated with the inner cavity of the storage battery, and the bottom of the reaction cavity 211 is provided with a lower acid filtering sheet 22; the inside of valve body 11 has valve pocket 111, and the bottom of valve pocket 111 has the air flue 112 that is linked together with the battery inner chamber, and the middle part of air flue 112 is provided with well acid filter 12, and the top of valve pocket 111 is provided with lid plate 13, is provided with acid filter 14 between lid plate 13 and the well acid filter 12, and has the gas vent 162 that communicates valve pocket 111 and external environment on the valve body 11.
In the working process, gases such as hydrogen, oxygen and the like in the storage battery mainly enter the reaction cavity 211 through the lower acid filtering sheet 22 at the bottom of the plug body 21 to react with the catalyst, and water generated after the reaction flows back into the storage battery through the bottom of the plug body 21 after being collected on the inner wall of the reaction cavity 211 so as to reduce the water loss in the storage battery and ensure the sufficient water in the storage battery; meanwhile, the surplus hydrogen and oxygen in the storage battery are directly communicated into the valve cavity 111 through the air passage 112, acid mist in the gas is effectively reduced through the treatment of the middle acid filtering sheet 12 and the upper acid filtering sheet 14 in sequence, and then the gas is discharged to the external environment through the exhaust port 162. The exhaust valve assembly effectively reduces water loss and acid mist emission in the storage battery through the cooperative cooperation of the catalyst in the reaction cavity and each acid filtering sheet, so that the overall performance and the service life of the lead-acid storage battery are obviously improved, and meanwhile, a composite valve structure formed by the cooperation of the valve body and the plug body is adopted, so that the processing precision and the structural strength of the whole exhaust valve assembly are effectively ensured, and the use requirement under a high-strength working condition is met.
Further, a rubber cap 15 is provided at the upper port of the air duct 112. The rubber cap 15 can reliably seal the upper port of the air passage 112 under normal working conditions so as to prevent gases such as hydrogen and oxygen in the storage battery from being directly communicated into the valve cavity 111 through the upper port of the air passage 112, thereby ensuring that most of the gases such as hydrogen and oxygen in the storage battery mainly enter the reaction cavity 211 through the lower acid filtering sheet 22 at the bottom of the plug body 21 to react with the catalyst so as to be converted into water and flow back, and preventing water loss; when the internal air pressure of the accumulator reaches a certain value due to excessive hydrogen and oxygen in the accumulator, the rubber cap 15 is moderately jacked up, so that a gap for air flow to pass through is formed at the matching surface between the rubber cap 15 and the upper port of the air passage 112, and the excessive hydrogen and oxygen can be directly introduced into the valve cavity 111 through the air passage 112 and finally discharged to the external environment after acid removal treatment of the middle acid filter 12 and the upper acid filter 14 in sequence.
In addition, the bottom of the valve cavity 111 is provided with a boss 113, the upper port of the air channel 112 is positioned in the middle of the top surface of the boss 113, and the rubber cap 15 is sleeved and buckled on the top of the boss 113. The boss 113 can obviously improve the structural suitability between the upper port of the air channel 112 and the rubber cap 15, and the sleeved buckling structure between the rubber cap 15 and the boss 113 can effectively ensure the assembly strength between the two; meanwhile, the boss structure can obviously increase the effective length of the air passage 112 under the condition that the specification and the layout of the main body space inside the valve cavity 111 are not changed, so that the internal gas flow of the air passage 112 is more uniform and efficient, and the rectifying effect of the air passage 112 is improved.
It should be noted that, corresponding to the above-mentioned matching structure of the rubber cap 15 and the upper port of the air channel 112, when the boss 113 is buckled and matched with the rubber cap 15, if the internal air pressure of the battery reaches a certain value due to excessive hydrogen and oxygen, the rubber cap 15 will be jacked up to form a gap for air flow passing through the matching surface between the rubber cap 15 and the boss 113, so as to ensure that the lead-acid battery under the high-pressure working condition can stably and reliably operate.
On the other hand, the top of the plug body 21 is provided with a flow guiding cavity 212 communicated with the air passage 112, the side wall of the flow guiding cavity 212 is provided with a flow guiding hole 213 communicated with the inner cavity of the storage battery, and the flow guiding cavity 212 and the reaction cavity 211 are blocked by a baffle plate 23. Excess oxygen and hydrogen in the battery cavity are introduced into the flow guiding cavity 212 through the flow guiding hole 213, and the flow guiding cavity 212 moderately guides and sorts the air flow, so that the air flow can be rapidly and stably introduced into downstream components such as the air channel 112.
It should be further noted that, the purpose of the partition 23 is to ensure that the structural spaces between the flow guiding chamber 212 and the reaction chamber 211 are independent and do not affect each other, but in principle, the flow guiding chamber 212 and the reaction chamber 211 may be properly communicated with each other, so as to meet the gas treatment requirement under the actual working condition; in view of practical operation effects and working efficiency of the apparatus, it is a more reliable and preferable structural form to isolate the flow guide chamber 212 and the reaction chamber 211 from each other by the partition plate 23 so that the two remain structurally independent.
Specifically, the axis of the baffle hole 213 is tangential to the inner peripheral wall of the baffle cavity 212. The flow guiding mode that the axis of the hole is tangential to the inner wall of the cavity enables the airflow introduced through the flow guiding hole 213 to form a cyclone in the flow guiding cavity 212 along the circumferential movement of the inner wall of the flow guiding cavity 212, so that the flow guiding and rectifying effects in the flow guiding cavity 212 are remarkably improved, and the conduction efficiency and the filtering effect of the airflow during conveying to downstream components are ensured.
It should be noted that, in order to ensure the cyclone effect of the airflow in the airflow guiding cavity 212, the number of the airflow guiding holes 213 is preferably two as shown in fig. 3 and symmetrically disposed on two sides of the airflow guiding cavity 212, but the number of the airflow guiding holes 213 is not limited to this, so long as the airflow guiding holes are circumferentially distributed on the sidewall of the airflow guiding cavity 212 and not less than two, and the number of the airflow guiding holes 213 is preferably two as shown in consideration of the processing cost and the processing difficulty.
More specifically, the bottom of the air channel 112 has an annular air hole 115 in communication with the flow directing chamber 212. The annular air hole 115 can effectively increase the air inflow of the lower port of the air passage 112, and can be efficiently matched with cyclone air flow formed in the flow guide cavity 212, so that the air flow in the flow guide cavity 212 can be rapidly and smoothly introduced into the air passage 112.
Further, the lower peripheral wall of the valve body 11 has external threads 114 that fit into the battery case 31. Through this external screw thread 114 and the internal screw thread that is located on the battery case 31 cooperate, realize the reliable assembly between valve body 11 and the battery case 31, and then realize the whole reliable installation of discharge valve assembly, and the dismouting of screw assembly is simple and convenient high-efficient, connects reliable and stable, can further improve the assembly strength and the dismouting operating efficiency between discharge valve assembly and the battery case.
Further, the top of the valve body 11 is provided with a regular hexagonal prism-shaped screw cap 16, the middle part of the screw cap 16 is provided with an assembly hole 161, the upper end of the air outlet 162 is positioned on the hole wall of the assembly hole 161, the bottom of the assembly hole 161 is provided with a spigot 163 which is matched with the bottom of the cover plate 13, and the cover plate 13 is embedded in the assembly hole 161. Such a regular hexagonal-prism-shaped nut 16 contributes to improvement of the operational convenience when a worker removes or installs the valve body 11 from or on the battery case 31; meanwhile, the spigot 163 can provide proper limit for the cover plate 13, so that the cover plate 13 can not excessively extend into the assembly hole 161 to form structural interference with internal components such as a valve cavity and the like; the exhaust port 162 is disposed on the hole wall of the assembly hole 161, so that interference of the exhaust port 162 to the main structure of the valve body 11 can be effectively avoided, and in practical application, the exhaust port 162 is preferably disposed at a fit gap between the edge portion of the cover plate 13 and the inner wall of the assembly hole 161, so as to ensure smooth air flow at the exhaust port 162.
Of course, the shape of the nut 16 is merely a preferable scheme, and is an adaptive structural design made by considering a relatively common operation tool in the mechanical field, in principle, the shape of the nut 16 is not limited to this, and may be a hand wheel structural member with other prisms, polyhedrons, and even a friction surface with limited outer peripheral surface, and a worker may flexibly adjust according to the working condition requirement, in principle, the practical assembly and use requirement of the exhaust valve assembly should be ensured.
Further, an annular baffle 17 is provided on the lower peripheral wall of the nut 16 against the battery case 31, and a sealing gasket 171 fitted to the battery case 31 is provided at the bottom of the annular baffle 17. When the exhaust valve assembly is reliably assembled with the storage battery shell 31, the bottom of the annular baffle 17 is propped against the outer surface of the storage battery shell 31 to prevent the main structure of the valve body 11 from further extending into the storage battery shell 31, so that the relative position between the exhaust valve assembly and the storage battery shell 31 is effectively ensured, and structural interference or damage caused by excessive assembly is avoided.
More specifically, the seal ring 171 can provide sufficient mechanism buffer for the abutting fit between the annular baffle 171 and the battery case 31 through the elastic deformation of the seal ring 171, so as to prevent the main structures of the annular baffle 171 and the battery case 31 from being damaged in a non-working manner due to direct rigid contact, and meanwhile, the seal ring 171 can effectively ensure the structural tightness at the matching surface between the annular baffle 171 and the battery case 31, and ensure the overall working performance of the assembly; similarly, in practical application, a sealing ring 23 may be disposed at the bottom of the plug 21, i.e. below the lower acid filtering sheet 22, so as to ensure structural sealing of the bottom component of the plug 21 and sealing of the main cavity structures such as the reaction cavity 211.
Please refer to fig. 1.
In a specific embodiment, the lead-acid battery provided by the invention comprises a battery shell 31 and an exhaust valve assembly arranged on the battery shell 31, wherein the exhaust valve assembly 10 is the exhaust valve assembly as described in the previous embodiment. The lead-acid storage battery has less water loss in the working process, less acid mist discharge amount, better working performance and longer service life.
In summary, in the working process of the exhaust valve assembly provided by the invention, gases such as hydrogen, oxygen and the like in the storage battery mainly enter the reaction cavity through the lower acid filtering sheet at the bottom of the plug body to react with the catalyst, and water generated after the reaction is collected on the inner wall of the reaction cavity and flows back into the storage battery through the bottom of the plug body, so that the water loss in the storage battery is reduced, and the sufficient water in the storage battery is ensured; meanwhile, the surplus hydrogen and oxygen in the storage battery are directly communicated into the valve cavity through the air passage, acid mist in the gas is effectively reduced through treatment of the middle acid filtering sheet and the upper acid filtering sheet in sequence, and then the gas is discharged to the external environment through the exhaust port. The exhaust valve assembly effectively reduces water loss and acid mist emission in the storage battery through the cooperative cooperation of the catalyst in the reaction cavity and each acid filtering sheet, so that the overall performance and the service life of the lead-acid storage battery are obviously improved, and meanwhile, a composite valve structure formed by the cooperation of the valve body and the plug body is adopted, so that the processing precision and the structural strength of the whole exhaust valve assembly are effectively ensured, and the use requirement under a high-strength working condition is met.
In addition, the lead-acid storage battery applying the exhaust valve assembly provided by the invention has the advantages of less water loss in the working process, less acid mist discharge amount, better working performance and longer service life.
The exhaust valve assembly and the lead-acid storage battery applying the exhaust valve assembly are described in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (6)
1. An exhaust valve assembly, characterized in that: the device comprises a valve body arranged at the top of a storage battery shell and a plug body which is positioned in an inner cavity of the storage battery and connected to the bottom of the valve body, wherein the middle part of the plug body is provided with a reaction cavity which can contain a catalyst and is communicated with the inner cavity of the storage battery, and the bottom of the reaction cavity is provided with a lower acid filtering sheet;
The inside of the valve body is provided with a valve cavity, the bottom of the valve cavity is provided with an air passage communicated with the inner cavity of the storage battery, the upper port of the air passage is provided with a rubber cap, the middle part of the air passage is provided with a middle acid filtering sheet, the top of the valve cavity is provided with a cover plate, an upper acid filtering sheet is arranged between the cover plate and the middle acid filtering sheet, and the valve body is provided with an exhaust port communicated with the valve cavity and the external environment;
The top of the plug body is provided with a flow guide cavity communicated with the air passage, the side wall of the flow guide cavity is provided with a flow guide hole communicated with the inner cavity of the storage battery, the axis of the flow guide hole is tangential to the inner peripheral wall of the flow guide cavity, the flow guide cavity is blocked with the reaction cavity through a partition plate, and the bottom of the air passage is provided with an annular air hole communicated with the flow guide cavity.
2. The exhaust valve assembly as recited in claim 1, wherein: the bottom of the valve cavity is provided with a boss, the upper port of the air passage is positioned in the middle of the top surface of the boss, and the rubber cap is sleeved and buckled on the top of the boss.
3. The exhaust valve assembly as recited in claim 1, wherein: the lower peripheral wall of the valve body is provided with external threads which are matched with the storage battery shell.
4. The exhaust valve assembly as recited in claim 3, further comprising: the top of valve body has the nut that is regular hexagonal prism shape, the middle part of nut has the pilot hole, the upper end of gas vent is located on the pore wall of pilot hole, the bottom of pilot hole have with the tang of the bottom adaptation of cover plate, the cover plate inlay in the pilot hole.
5. The exhaust valve assembly as recited in claim 4, further comprising: an annular baffle plate propping against the storage battery shell is arranged on the peripheral wall of the lower part of the nut, and a sealing gasket matched with the storage battery shell is arranged at the bottom of the annular baffle plate.
6. The utility model provides a lead acid battery, includes battery case and set up in discharge valve assembly on the battery case, its characterized in that: the vent valve assembly of any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810643526.XA CN108550761B (en) | 2018-06-21 | 2018-06-21 | Lead-acid storage battery and exhaust valve assembly thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810643526.XA CN108550761B (en) | 2018-06-21 | 2018-06-21 | Lead-acid storage battery and exhaust valve assembly thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108550761A CN108550761A (en) | 2018-09-18 |
| CN108550761B true CN108550761B (en) | 2024-06-07 |
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| CN201810643526.XA Active CN108550761B (en) | 2018-06-21 | 2018-06-21 | Lead-acid storage battery and exhaust valve assembly thereof |
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| CN114744361B (en) * | 2022-04-14 | 2024-04-19 | 北京科易动力科技有限公司 | Ejector pin type explosion-proof valve and battery pack with same |
| CN114678651B (en) * | 2022-04-14 | 2024-04-19 | 北京科易动力科技有限公司 | Explosion-proof valve and battery pack with same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2445442Y (en) * | 2000-09-19 | 2001-08-29 | 江苏双登电源有限公司 | One-way pressure control valve for valve control sealed lead-acid battery |
| CN2559104Y (en) * | 2002-08-13 | 2003-07-02 | 江苏隆源双登电源有限公司 | Safety valve for lead-acid battery |
| CN2689469Y (en) * | 2004-03-22 | 2005-03-30 | 舟山市虹达特种橡胶制品有限公司 | Safety valve of free-maintaining valve-controlled sealing plumbous acid accumulator |
| CN2819485Y (en) * | 2005-08-03 | 2006-09-20 | 江苏双登集团有限公司 | Valve-controlled sealed lead acid battery safety valve |
| CN101159321A (en) * | 2007-11-20 | 2008-04-09 | 山东圣阳电源实业有限公司 | Lead-acid accumulator protection valve |
| CN206134781U (en) * | 2016-10-28 | 2017-04-26 | 艾诺斯（重庆）华达电源系统有限公司 | High temperature valve accuse sealed lead acid battery's relief valve |
-
2018
- 2018-06-21 CN CN201810643526.XA patent/CN108550761B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2445442Y (en) * | 2000-09-19 | 2001-08-29 | 江苏双登电源有限公司 | One-way pressure control valve for valve control sealed lead-acid battery |
| CN2559104Y (en) * | 2002-08-13 | 2003-07-02 | 江苏隆源双登电源有限公司 | Safety valve for lead-acid battery |
| CN2689469Y (en) * | 2004-03-22 | 2005-03-30 | 舟山市虹达特种橡胶制品有限公司 | Safety valve of free-maintaining valve-controlled sealing plumbous acid accumulator |
| CN2819485Y (en) * | 2005-08-03 | 2006-09-20 | 江苏双登集团有限公司 | Valve-controlled sealed lead acid battery safety valve |
| CN101159321A (en) * | 2007-11-20 | 2008-04-09 | 山东圣阳电源实业有限公司 | Lead-acid accumulator protection valve |
| CN206134781U (en) * | 2016-10-28 | 2017-04-26 | 艾诺斯（重庆）华达电源系统有限公司 | High temperature valve accuse sealed lead acid battery's relief valve |
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|---|---|
| CN108550761A (en) | 2018-09-18 |
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