CN210272504U

CN210272504U - Air release bolt, air release bolt assembly and storage battery

Info

Publication number: CN210272504U
Application number: CN201921301028.3U
Authority: CN
Inventors: 刘可畅; 邓全忠; 宋艳龙; 冯克召; 杜春涛
Original assignee: Fengfan Co Ltd
Current assignee: Fengfan Co Ltd
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-04-07
Anticipated expiration: 2029-08-12

Abstract

The utility model is suitable for a battery device technical field provides a venting cock, venting cock subassembly and battery. The venting cock comprises a cock body, a cock core and an air filter. The bolt body is used for being hermetically connected with a liquid injection hole on the storage battery shell, the upper end of the bolt body is provided with a cavity structure with a bolt body opening, and the lower part of the bolt body is provided with an air inlet hole; the plug core is arranged in the cavity structure, and the periphery of the plug core is provided with a buffer structure for delaying the rising of the acid liquor; and the air filter disc is used for being connected to the opening of the bolt body in a sealing manner and sealing the bolt core in the cavity structure. The utility model provides an air cock through add the key core that has buffer structure in the key body and add the air filter piece on the key body, makes the unable quick outflow key body opening of acidizing fluid, for the loss of gas, the reduction of the internal atmospheric pressure of battery shell provides more time, reduces the possibility that the battery leaks sour by a wide margin.

Description

Air release bolt, air release bolt assembly and storage battery

Technical Field

The utility model belongs to the technical field of battery device, more specifically say, relate to a vent bolt, vent bolt subassembly and battery.

Background

A lead-acid accumulator without maintenance (able to be filled with liquid) is a main lead-acid accumulator used in special car, and its casing is composed of accumulator tank, cover and air-exhausting bolt fixed to cover. Part of hydrogen and oxygen generated in the working process of the storage battery is discharged to the outside of the storage battery through the vent plug, and part of hydrogen and oxygen are gathered in the storage battery. When the gas evolution amount of the battery is large, the acid liquid can possibly swell due to the over-high air pressure, and the common vent plug does not have an acid blocking structure, so that the acid liquid is easy to leak from the vent plug.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vent bolt aims at solving current non-maintaining lead acid battery and leaks sour technical problem from vent bolt department easily.

In order to achieve the above object, the present invention adopts the technical scheme that an exhaust bolt is provided, which comprises:

the plug body is used for being hermetically connected with a liquid injection hole on the storage battery shell, the upper end of the plug body is provided with a cavity structure with a plug body opening, and the lower part of the plug body is provided with an air inlet hole;

the plug core is arranged in the cavity structure, and the periphery of the plug core is provided with a buffer structure for delaying the rising of the acid liquor; and

and the air filter disc is used for being connected to the opening of the bolt body in a sealing manner and sealing the bolt core in the cavity structure.

Furthermore, the core bolt is of a cylindrical structure with an opening at one end, the opening of the core bolt is arranged downwards, a first flange plate surrounding the core bolt is arranged at the upper end of the core bolt, the first flange plate is clamped with the inner wall of the cavity structure in an interference manner, and an air outlet hole is formed in the first flange plate.

Further, the buffer structure is a helical structure disposed around the core.

Further, the lower end of the core bolt surrounds a second flange plate arranged on the core bolt, and a gap is formed between the second flange plate and the inner wall of the cavity structure.

Further, one end of the spiral structure is connected with the first flange plate, and the other end of the spiral structure is connected with the second flange plate.

Furthermore, the number of the spiral structures is two, the connection points of the two spiral structures on the second flange plate are arranged at an interval of 180 degrees, the connection points of the two spiral structures on the first flange plate are arranged at an interval of 180 degrees, and the circumferential spiral angles of the two spiral structures are both 180 degrees.

Furthermore, an acid liquor opening for passing acid liquor is formed in the second flange plate.

Further, the air filter sheet is connected with the inner wall of the cavity structure or the end face of the bolt body in an ultrasonic welding mode.

Another object of the present invention is to provide a venting bolt assembly, which comprises a venting cover and at least one venting bolt, wherein the venting bolt is provided with a fastening flange plate at the periphery thereof, and the venting cover is provided with at least one fastening groove for fastening the fastening flange plate.

It is still another object of the present invention to provide a battery including a battery case containing an acid solution and the above-mentioned venting pin assembly.

The utility model provides an air cock compares with prior art, through set up the bolt core that has buffer structure in the bolt and set up the gas filter piece on the bolt, makes the unable quick outflow bolt opening of acidizing fluid, for gaseous loss, the reduction of the internal atmospheric pressure of battery shell provides more time, reduces the possibility that the battery leaks sour by a wide margin.

Drawings

Fig. 1 is a schematic cross-sectional structural view of a plug body in an air release plug according to an embodiment of the present invention;

FIG. 2 is a schematic right sectional view of the structure of FIG. 1;

FIG. 3 is a bottom view of FIG. 1;

FIG. 4 is a top view of FIG. 1;

FIG. 5 is a view taken along line A of FIG. 4;

fig. 6 is a schematic structural diagram (partially cut away) of a core in a venting plug according to an embodiment of the present invention;

FIG. 7 is a right side view of FIG. 6;

FIG. 8 is a bottom view of FIG. 6;

FIG. 9 is a top view of FIG. 6 (with the second flange plate seen in perspective);

FIG. 10 is a view from the direction B of FIG. 9;

fig. 11 is a schematic structural view (partially in section) of an exhaust plug assembly according to an embodiment of the present invention;

FIG. 12 is a top view of FIG. 11;

fig. 13 is a right side view of fig. 12.

In the figure: 100-a plug body; 101-air inlet holes; 110-snap flange plate; 200-a core; 210-a first flange plate; 211-air outlet holes; 220-a second flange plate; 221-opening the acid liquor; 230-a helical structure; 300-air filter sheet; 400-exhaust cover.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that the terms "length," "width," "height," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," "tail," and the like, are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Further, "plurality" or "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 11, an embodiment of the vent plug according to the present invention will now be described. The venting cock comprises a cock body 100, a cock core 200 and an air filter 300.

The plug body 100 is used for being hermetically connected with a liquid injection hole on a storage battery shell, the upper end of the plug body 100 is provided with a cavity structure with a plug body opening, and the lower part of the plug body 100 is provided with an air inlet hole 101. The plug 200 is arranged in the cavity structure in a filling mode, and the periphery of the plug 200 is provided with a buffer structure for delaying the rising of the acid liquor. The air filter 300 is used for sealing connection at the opening of the bolt body and sealing the bolt core 200 in the cavity structure, and the air filter 300 has good hydrophobicity, so that gas can pass through the air filter but acid liquor can be prevented from flowing out of the opening of the bolt body to a certain extent.

Use the embodiment of the utility model provides a during the air cock, air cock and the last notes liquid hole sealing connection of battery case, when producing gas in the battery, in the cavity structure can be flowed into from inlet port 101 to gas, then ascending loss to air filter 300 department, through the bolt body opening loss external world of air filter 300. When the air pressure is too high, the acid liquid may flow into the cavity structure from the air inlet 101, and due to the delaying effect of the plug 200 and the buffer structure, the acid liquid cannot rapidly fill the cavity structure but slowly fill the cavity structure, and due to the good hydrophobicity of the air filter 300, the air filter 300 has a certain blocking effect on the liquid, so that the acid liquid cannot rapidly pass through the air filter 300. Due to the action of the buffer structure and the air filter 300, the acid liquor cannot be rapidly discharged from the opening of the bolt body, so that sufficient dissipation time is provided for the gas, the gas is fully dissipated within a certain time, the air pressure in the storage battery shell is reduced, the acid liquor can flow back into the storage battery shell from the air inlet hole 101 of the air exhaust bolt after the air pressure is reduced, and the leakage probability of the acid liquor is reduced.

The embodiment of the utility model provides an air cock compares with prior art, through add the bolt core that has buffer structure in the bolt and add the gas filter piece on the bolt, make the unable quick outflow bolt opening of acidizing fluid, for gaseous loss, the reduction of the internal atmospheric pressure of battery shell provide more time, reduce the possibility that the battery leaks sour by a wide margin.

As a specific embodiment of the vent plug provided in the present invention, the air filter 300 is a PE (polyethylene) material member.

As a specific embodiment of the venting plug provided by the utility model, the air filter 300 is formed by molding and sintering ultra-high molecular weight polyethylene powder material with the particle size of 60-105 μm, and the air permeability of the air filter is more than or equal to 0.08m3/h under the pressure of 240mmH2O water column in the state of being completely wetted by water.

Referring to fig. 6 to 11, as a specific embodiment of the vent bolt provided by the present invention, the plug 200 is a cylinder structure with an open end, the other end of the plug 200 is not open (i.e. the other end is closed), the opening of the plug 200 is disposed downward, the upper end of the plug 200 is provided with a first flange 210 disposed around the plug 200 (i.e. the outer wall of the cylinder structure), the first flange 210 is engaged with the inner wall of the cavity structure in an interference manner, no gap is formed between the first flange 210 and the inner wall of the cavity structure, the first flange is provided with a vent hole 211, and the vent hole 211 is a through hole. The bolt core 200 of the cylinder structure can not excessively occupy the volume of the cavity structure, acid liquor can be contained in the cylinder structure, and therefore the containing space of the acid liquor in the cavity structure can not be occupied, the bolt core 200 can be stably installed in the bolt body 100 due to the arrangement of the first flange plate 210, the acid liquor can only flow out of the air outlet 211 and flow to the air filter 300, and the speed of the acid liquor ascending to flow to the air filter 300 is further delayed.

Referring to fig. 6 to 7, as an embodiment of the vent plug provided by the present invention, the first flange plate 210 is provided with a chamfer structure, so that the first flange plate 210 is mounted and clamped in the cavity structure.

Referring to fig. 6 to 11, as a specific embodiment of the venting plug provided in the present invention, the buffer structure is a spiral structure 230 disposed around the plug core 200 (i.e. the outer wall of the cylindrical structure), the spiral structure 230, the outer wall of the cylindrical structure and the inner wall of the cavity structure form a spiral labyrinth structure, which increases the rising path of the acid solution and prolongs the rising time, and the spiral structure 230 is a winding rising structure, which not only increases the resistance of the acid solution rising, but also provides a guiding function for the acid solution backflow.

Referring to fig. 6 to 11, as a specific embodiment of the venting plug provided by the present invention, the lower end of the plug 200 surrounds the second flange plate 220 disposed on the plug 200 (i.e. the outer wall of the cylindrical structure), a gap is disposed between the second flange plate 220 and the inner wall of the hollow structure, and the acid solution can flow into the gap between the outer wall of the cylindrical structure and the inner wall of the hollow structure, and then winds along the spiral structure 230.

Referring to fig. 6 to 11, as a specific embodiment of the vent plug provided by the present invention, the cavity structure is a cylindrical cavity, and the first flange plate 210 and the second flange plate 220 have a circular plate-shaped flange plate structure.

Referring to fig. 6 to 11, as an embodiment of the vent plug provided by the present invention, one end of the spiral structure 230 is connected to the first flange plate 210, and the other end of the spiral structure 230 is connected to the second flange plate 220, so as to form a stronger and more stable buffer structure.

Referring to fig. 6, 7 and 10, as an embodiment of the vent bolt provided by the present invention, the spiral structures 230 have two spiral structures 230, the connection points of the two spiral structures 230 on the second flange plate 220 are arranged at an interval of 180 degrees, the connection points of the two spiral structures 230 on the first flange plate 210 are also arranged at an interval of 180 degrees, and the circumferential helix angles of the two spiral structures 230 are equal to 180 degrees, that is, the two spiral structures 230 are just like a double-thread structure with a helix extension angle of 180 degrees.

Referring to fig. 8 and 9, as an embodiment of the vent plug of the present invention, an acid opening 221 for passing acid liquid is formed on the second flange plate 220.

Referring to fig. 8 and 9, as an embodiment of the vent plug provided by the present invention, the air filter 300 is connected to the inner wall of the cavity structure or the upper end surface of the plug body 100 by ultrasonic welding to achieve a sealing connection effect.

Referring to fig. 1 to 13, the present invention further provides a vent bolt assembly, which includes a vent cover 400 and the vent bolt of the above embodiment, wherein the periphery of the bolt body is provided with a fastening flange plate 110, and the vent cover 400 is provided with at least one fastening groove structure for fastening with the fastening flange plate 110, so that one or more vent bolts can be fastened and installed on the vent cover 400, and then, one vent bolt can be installed on the battery case.

A gap communicated with the outside is formed between the air filter 300 and the clamping groove structure, or a vent hole is formed in the clamping groove structure, so that gas exhausted from the air filter 300 can escape to the outside.

The embodiment of the utility model provides an exhaust bolt subassembly compares with prior art, through set up the bolt core that has buffer structure in the bolt and set up the gas filter piece on the bolt, makes the unable quick outflow bolt opening of acidizing fluid, for gaseous loss, the reduction of the internal atmospheric pressure of battery shell provide more time, reduces the possibility that the battery leaks sour by a wide margin.

The utility model also provides a battery, including the battery case that is equipped with the acidizing fluid and the air release bolt subassembly in the above-mentioned embodiment, each air release bolt in the air release bolt subassembly and annotate liquid hole sealing connection on the battery case.

The embodiment of the utility model provides a battery compares with prior art, through add the bolt core that has buffer structure in the bolt and add the gas filter piece on the bolt, makes the unable quick outflow bolt opening of acidizing fluid, for gaseous loss, the reduction of the internal atmospheric pressure of battery shell provides more time, reduces the possibility that the battery leaked acid by a wide margin.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A vent plug, comprising:

2. The vent plug of claim 1 wherein said core is a cylindrical structure having an open end, said core having a downwardly facing opening, said core having a first flange plate disposed at an upper end thereof around said core, said first flange plate engaging an inner wall of said cavity structure in an interference fit, said first flange plate having an exit hole.

3. The vent plug of claim 2, wherein the buffer structure is a helical structure disposed around the core.

4. The vent plug of claim 3, wherein the lower end of the core is disposed around a second flange plate disposed around the core, the second flange plate being spaced from the inner wall of the cavity structure.

5. The vent plug of claim 4, wherein one end of the spiral structure is connected to the first flange plate and the other end of the spiral structure is connected to the second flange plate.

6. The vent plug of claim 5, wherein the spiral formations have two, the attachment points of the spiral formations on the second flange plate being spaced 180 degrees apart, the attachment points of the spiral formations on the first flange plate being spaced 180 degrees apart, and the circumferential helix angles of both spiral formations being 180 degrees.

7. The vent pin of claim 4, wherein the second flange plate has acid openings for passage of acid therethrough.

8. The vent plug of claim 1, wherein the filter disc is ultrasonically welded to an inner wall of the cavity structure or to an end face of the plug body.

9. An exhaust bolt assembly comprising an exhaust cover and at least one exhaust bolt according to any one of claims 1 to 8, said bolt body having a snap-fit flange plate on the periphery thereof, said exhaust cover having at least one snap-fit formation for snap-fitting engagement with said snap-fit flange plate.

10. A battery comprising a battery housing provided with an acid solution and a vent pin assembly according to claim 9.