KR200489366Y1 - One-piece vent cap with improved leakage - Google Patents

Abstract

An embodiment of the present invention is a head cover including a head portion having an outwardly extended plane and being fastened to an insertion groove of a battery cover and an inner hollow space extending downward from a lower surface of the head portion and opened at a lower surface, A body having a gas discharge hole through which the gas is discharged and a discharge plate having a plurality of upright partition walls divided to divide the internal space of the body into a plurality of spaces, The present invention can provide an integrated leak vent type cap cap which is integrally formed by injection molding.

Description

One-piece vent cap with improved leakage "

The present invention relates to an integrated leak vent type cap.

An industrial battery is a type of secondary battery, which is formed by a combination of a plurality of cells in which a positive electrode plate and a negative electrode plate are inserted and an electrolyte is filled. In order to supply electric power from a transportation device such as an electric cart or an electric forklift .

These industrial batteries basically consist of a discharge generating electric power by using chemical energy generated by a chemical reaction occurring between a positive electrode plate and a negative electrode plate immersed in an electrolytic solution and a continuous charging by repeatedly charging the electrolytic solution with sulfuric acid by electric energy supplied from the outside .

In the process of charging the industrial battery, hydrogen gas is generated in the electrolytic solution by the chemical reaction between the electrolyte and the electrode. When the hydrogen gas accumulates, the pressure inside the battery becomes high, and the risk of explosion is caused.

Therefore, in general, the hole cap used for blocking the injection hole formed in the battery is formed with a gas discharge hole so that hydrogen gas generated in the battery can be discharged.

On the other hand, in the electrolytic solution, bubbles are generated by the hydrogen gas, and bubbles are generated from the surface of the electrolytic solution due to the bubbles. Due to the structural characteristics of the hole cap, conventionally such bubbles swell up to the outside of the battery through the gas- Leakage occurs.

Various hole cap structures have been developed and applied to block the external discharge of the electrolytic solution. Such conventional hole caps may block the discharge of electrolyte to some extent, When the degree of shaking of the electrolytic solution is excessive, there is a problem that the discharge of the electrolytic solution can not be sufficiently blocked. If the discharge of such an electrolyte can not be blocked, various problems such as burning of the operator and corrosion of the peripheral devices are caused by the electrolytic solution of the sulfuric acid component.

Accordingly, in order to prevent leakage of the electrolytic solution as described above, conventionally, a vent plate having a labyrinth inside the battery vent cap is provided. However, such a conventional vent cap has a disadvantage in that the production efficiency is lowered due to the assembling process due to the structure in which the cap (body) and the seal plate are separated from each other.

Korean Registered Patent No. 10-1220485 (Registered on Mar. 01, 03)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide an integrated leak vent type cap capable of shortening the assembly process of the vent cap.

The present invention includes the following embodiments in order to achieve the above object.

An embodiment of the present invention includes a head portion, a body, and an annular plate integrally formed by injection molding, and the annular plate has a plurality of partition walls formed with first through fourth through holes formed to penetrate the electrolyte, The plurality of barrier ribs may include a first barrier rib extending in the X axis direction so as to be spaced apart from an inner surface of the body in which the gas inlet hole is formed on the inner side of the body and a second barrier rib spaced apart from the first barrier rib, A third partition wall extending in the Y axis direction and dividing a space between the first partition wall and the second partition wall, and a second partition wall extending in the Y axis direction so as to be connected to the inner surface of the body having the gas discharge hole formed therein, And a fourth partition for dividing the spaced space between the first partition and the inner surface of the body, wherein the plurality of spaces comprise a first space between the first partition and the one side wall of the body, and a third space between the first partition and the second partition, Lt; RTI ID = 0.0 > And a fourth space divided by a fourth partition wall extending between the third space and the other side wall of the body at the second partition wall and the fifth space, and the gas inflow hole is divided into the first space and the second space, The first through hole is formed on the upper surface of the wall partitioning the second space in the first partition wall and the second through hole is formed in the lower part of the wall surface partitioning the fourth space in the second partition wall. And the third through-hole is formed on the lower side of the third partition so as to transfer the electrolyte introduced into the second space through the first through-hole to the third space, and the fourth through-hole is formed on the upper side of the second through- The gas discharge hole is formed on the upper side of the other side wall of the body so that the fifth space is filled with the electrolyte solution and discharged therefrom so as to discharge the electrolytic solution flowing from the third space to the fourth space to the fifth space. Leak-proof type An integral vent cap can be provided.

The present invention has the effect of shortening the assembling process of the end plate by forming the annular plate accommodated inside the vent cap and the cap integrally injection-molded.

In addition, according to the present invention, since the inner space of the vent cap is divided into a plurality of spaces and the passage is formed through the through holes of the divided spaces, the length of the passage through which the electrolyte flows to the gas discharge hole can be increased, And leakage can be prevented even when the battery is turned upside down or fixed at an inclined angle.

1 is a perspective view showing an integrated leak vent type cap according to the present invention.
2 is a bottom view.
3 is a view showing the inside of the body.

Hereinafter, an integrated leak vent type cap according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an integrated leakage vent type integral vent cap according to the present invention, FIG. 2 is a bottom view, and FIG. 3 is a view showing an interior of the body 200. FIG. 3 is a perspective view illustrating the inside of the body 200 in FIG. 1 in detail.

1 to 3, the leakage leakage improving integrated vent cap according to the present invention includes a head part 100 fastened to a battery cover (not shown), a barrier plate 400 for increasing the movement resistance of the electrolyte, A body 200 extending from the head part 100 and inserted into a battery case (not shown), a barrier plate 400 for increasing the movement resistance of the electrolyte inside the body 200, And the gas discharge hole 310 through which the electrolyte is discharged are formed.

The head portion 100 is formed in a plane extending outwardly to be seated in an insertion groove (not shown) which is inwardly directed from the outer surface of a battery cover (not shown). In addition, a fiber sheet (not shown) such as a nonwoven fabric may be attached or omitted so that gas can be discharged from the lower surface of the head part 100 through the gas discharge hole 310.

The body 200 has a width narrower than the width of the head part 100 and extends downward. Here, the body 200 may form a hollow space for receiving the damper plate 400 from the inside, and a gas inlet hole 320 and a gas outlet hole 310 may be formed on the outer surface. Also, the body 200 may be threaded so as to coincide with the threads formed on the inner surface of the insertion groove (not shown) formed in the battery cover (not shown) on the outer surface. In addition, the upper surface of the body 200 is molded integrally with the head 100, and the lower surface is opened.

The joint structure of the vent cap and the battery cover (not shown) is omitted from the drawings and the detailed description as a generally known configuration is applied.

The gas inlet hole 320 and the gas outlet hole 310 are formed at the outer surface of the body 200. The gas inlet hole 320 is formed below the body 200 and the gas outlet hole 310 is formed through the body 200 So that a difference in height is generated. This height difference is intended to increase the moving distance so as to discharge the gas generated inside the battery case (not shown), but to prevent leakage of the electrolyte solution.

That is, the gas inlet holes 320 and the gas outlet holes 310 are formed at positions diagonally opposite to each other in the direction opposite to each other in the body 200.

The barrier plate 400 is injection molded integrally with the body 200 and the head unit 100 and forms a plurality of barrier ribs standing upright on the inner side of the body 200. The barrier plates 411, 412, 21, 422 are formed with through holes 411a, 412a, 421a, 422a so that the electrolyte can be moved. For example, the barrier plate 400 includes a first partition 411 that is erected away from the inner surface of the body 200 where the gas inlet hole 320 is formed, a second partition 411 that is spaced apart from the first partition 411, A third partition wall 421 extending upright between the first partition wall 411 and the second partition wall 412 and a body 200 having a gas discharge hole 310 formed in the second partition wall 412. [ And a fourth partition wall 422 extending to the inner surface of the partition wall 422.

The first partition wall 411 is formed to extend downward from the lower surface of the head part 100 to form a first space A spaced apart from the inner surfaces of the body 200 having the gas inlet holes 320 formed therein, . At this time, the first partition 411 is formed with a first through-hole 411a formed to pass through the gas inflow hole 320 so as to transfer the electrolytic solution introduced into the second space B.

The first through hole 411a is formed on the upper side of the body 200 when the gas inlet hole 320 is formed at a higher position with respect to the gas inlet hole 320. For example, And when the electrolyte is heated to a predetermined height or higher, it is transferred to the second space (B), thereby inhibiting the movement of the electrolyte.

The second barrier ribs 412 extend downward from the lower surface of the head part 100 to be spaced apart from the first barrier ribs 411 to form empty spaces B and C between the first barrier ribs 411 and the second barrier ribs 411. The second barrier rib 412 is formed with a second through hole 412a in order to transmit the electrolyte, which is transferred in the third space C divided by the third barrier rib 421, to the fourth space D, .

The third barrier rib 421 has a first barrier rib 411 and a second barrier rib 412 so as to divide the spaced space between the first barrier rib 411 and the second barrier rib 412 into two spaces B, As shown in FIG. For example, the first partition 411 and the second partition 412 extend in the X-axis direction, the third partition 421 extends in the Y-axis direction, and the first partition 411 and the second partition 412 To divide the space between the first bank 411 and the second bank 412 into a second space B and a third space C. [

In addition, the third barrier ribs 421 may be formed integrally with the first barrier ribs 411 and the second barrier ribs 412. The third partition 421 includes a third through hole 421a formed to penetrate through the first through hole 411a to allow the electrolytic solution transferred from the second space B to the third space C do. Here, the third through hole 421a may be formed at a different height from the first through hole 411a and the second through hole 412a.

For example, as shown in the figure, the third through-hole 421a includes a first through-hole 411a and a second through-hole 412a formed on the upper side of the first partition 411 and the second partition 412, The length of the flow path between the first barrier rib 421 and the second barrier rib 421 is increased.

The fourth partition wall 422 extends from the second partition wall 412 to the wall surface of the body 200 where the gas discharge hole 310 is formed and divides the remaining space into a fourth space D and a fifth space E . The fourth partition 422 may have a fourth through hole 422a to guide the electrolyte to the fifth space E where the gas discharge hole 310 is formed.

Here, the fourth through-hole 422a is formed in the fourth space D through the second through-hole 412a formed on the upper side of the second partition 412, And may be formed on the lower side so as to increase the flow path through the space (E).

As described above, the present invention is characterized in that the head portion 100, the body 200, and the room 200, which are formed by a plurality of partition walls extending and standing in the X-axis and Y-axis directions respectively from the inside of the body 200 And the end plate 400 is integrally formed by injection molding.

The sealing plate 400 is formed by dividing the inside of the body 200 into a plurality of divided spaces A, B, C, D and E, and a gas inlet hole 320 formed at one side of the body 200 Through holes 411a, 412a, 421a, and 422a through which the electrolytic solution moves to the respective partitions 411, 412, 421, and 422 are formed so as to form a flow path between the gas discharge holes 310 formed on the other side. Here, the through holes 411a, 412a, 421a, and 422a are characterized in that the heights of adjacent through holes are opposite to each other.

The present invention includes the above-described configuration. Hereinafter, the operation and effect according to the configuration of the present invention as described above will be described.

First, the vent cap is inserted into the insertion hole (not shown) of the battery cover (not shown) of the head part 100 so that the thread formed on the outer surface of the body 200 is inserted into the insertion groove (Not shown).

At this time, the vent cap is inserted into the battery case (not shown) to discharge the gas into the gas discharge hole 310 while preventing leakage of the electrolytic solution. The gas discharge hole 310 communicates with an insertion groove (not shown) of a battery cover (not shown) so as to exhaust gas to the outside of the battery cover (not shown) The leakage of the electrolyte is blocked by the labyrinth structure formed due to the space.

In addition, the battery with the above vent cap can be mounted on a vehicle. Therefore, if kinetic energy such as starting or stopping of the vehicle during driving or starting or stopping or shock or vibration is applied, the electrolyte can be introduced through the open bottom and / or the gas inflow hole 320.

However, since the vent cap of the present invention has a plurality of partition walls 411, 412, 421 and 422 dividing the inner space, the electrolytic solution is partitioned and accommodated in the divided space even when the electrolyte flows through the opened lower surface, The electrolytic solutions contained in the respective divided spaces are transferred to adjacent spaces through the first through fourth through holes 411a, 412a, 421a, and 422a.

At this time, the third through-hole 421a forms a flow path between the first through-hole 411a and the second through-hole 412a, and is lower than the first through-hole 411a and the second through-hole 412a And the fourth through-hole 422a is formed at a position lower than the second through-hole 412a and the gas discharge hole 310, while forming a flow path between the second through-hole 412a and the gas- As shown in FIG.

Therefore, the flow path from the gas inlet hole 320 to the gas outlet hole 310 is formed by the third through hole 421a at the lower position and the third through hole 421a at the lower position at the higher position of the first through hole 411a, The fourth through-hole 422a at the lower position in the second through-hole 412a, and the gas discharge hole 310 at the higher position in the fourth through-hole 422a .

In order to increase the travel distance of the electrolytic solution through the divided spaces A, B, C, D and E and the through holes 411a, 412a, 421a and 422a, So that leakage of the electrolytic solution can be prevented.

Therefore, even when the battery is inverted or fixed to be inclined, the present invention is formed into a plurality of divided spaces inside by the annular plate 400 formed integrally with the body 200, The leakage resistance can be prevented by increasing the movement resistance.

It will be appreciated that various modifications and equivalents may be made thereto by those skilled in the art to which the present invention is directed.

Therefore, it is to be understood that the present invention is not limited to the form described in the foregoing description. Therefore, the true scope of technical protection of the present invention should be determined by the technical idea of the scope of the appended utility model claim. It is to be understood that the appended claims are intended to cover all such modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

100: head part 200: body
310: gas exhaust hole 320: gas inlet hole
400: Bang plate 411: First partition
412: second partition 421: third partition
422: fourth partition 411a, 412a, 421a, 422a: through-hole

Claims (4)

A body 200, and a barrier plate 400 integrally formed by injection molding,
The barrier plate 40 has a plurality of barrier ribs formed with first through fourth through holes 411a, 412a, 421a, and 422a through which the electrolyte flows,
A number of bulkheads
A first partition 411 extending in the X axis direction so as to be spaced apart from the inner surface of the body 200 where the gas inlet hole 320 is formed in the body 200;
A second partition 412 spaced apart from the first partition 411 to form a divided space therebetween;
A third partition 421 extending in the Y-axis direction and dividing a space between the first partition 411 and the second partition 412; And
Axis direction so as to be connected to the inner surface of the body 200 where the gas discharge hole 310 is formed in the second partition wall 412 so that the space between the second partition wall 412 and the inner surface of the body 200 And a fourth partition wall 422 for dividing the partition wall 422,
Multiple spaces
The first space A between the first partition wall 411 and one side wall surface of the body 200 and the second space A between the first partition wall 411 and the second partition wall 412, The fourth space D divided by the fourth partition wall 422 extending between the space B and the third space C and the other side wall surface of the body 200 in the second partition wall 412, E)
The gas inlet hole 320 is formed on the lower side of one side wall of the body 200 to be moved from the first space A to the second space B,
The first through hole 411a is formed on the upper surface of the wall partitioning the second space B in the first partition wall 411,
The second through hole 412a is formed on the upper surface of the wall partitioning the fourth space D in the second partition wall 412,
The third through hole 421a is formed on the lower side of the third partition 421 to transfer the electrolyte introduced into the second space B through the first through hole 411a to the third space C,
The fourth through-hole 422a is connected to the fourth partition 422 so as to transfer the electrolyte introduced into the fourth space D from the third space C through the second through-hole 412a to the fifth space E. [ Respectively,
Wherein the gas discharge hole (310) is formed on the upper surface of the other side wall of the body (200) so as to discharge the fifth space (E) filled with the electrolyte.




delete delete delete

Images