KR102534686B1 - A explosion panel assembly for a energy storage system functions of exhaust and insulation - Google Patents

Abstract

A panel assembly for a container of an energy storage system, which can autonomously exhaust air to the exterior under predetermined conditions, is proposed. The assembly of the present invention comprises: an explosion panel (24) which is ruptured due to high pressure generated inside an energy storage system container; a conduit body (10) which includes an upper flange (12) formed at the top thereof, communicates with the interior of the container, and has an exhaust window (8) for exhaust; and a counter flange (20) which is coupled with the upper flange (12) of the conduit body (10) in a state in which the explosion panel (24) is interposed, thereby supporting the explosion panel (24). Here, an opening and closing plate (40) is supported by the conduit body (10) on one side surface, comes into contact with the outer surface of the conduit body (10) to close the exhaust window (8) when no external force is present, but moves away from the outer surface of the conduit body (10) to open the exhaust window (8) when external force is applied.

Description

An explosion panel assembly for a energy storage system functions of exhaust and insulation}

The present invention relates to an explosion panel assembly of an energy storage system (ESS), and more particularly, is configured to discharge air inside an energy storage system container to the outside, so that the inside can minimize the influence of external temperature. It relates to an explosion panel assembly of an energy storage system having a thermal insulation function.

For example, an energy storage system (ENERGY STORAGE SYSTEMS) is necessarily installed in systems that produce energy, such as photovoltaic power generation. Such an energy storage device generally includes a container having a required volume and a plurality of storage means capable of storing energy inside the container.

In addition, various devices are installed inside the container to create a stable environment necessary for energy storage. For example, Korean Patent Registration No. 10-1381592 controls the environment inside the container including the temperature and humidity inside the container It can be seen that various devices including air conditioners are installed. Considering that an abnormal situation may occur in the energy storage device inside the container, it can be said that control of the internal air of the container has a significant meaning.

In addition, since the storage means installed inside the container is very vulnerable to fire and explosion, an explosion venting device that discharges high-pressure gas and flame to the outside should be installed when an abnormal event occurs inside the container. For example, as shown in FIG. 1, when an abnormality occurs inside the container 2 of the energy storage system, the explosion panel 4 is opened so that high-pressure gas and flame generated inside the container are discharged to the outside. should be composed

Considering the environment inside the container of the energy storage system as described above, a high pressure inside the container is undesirable considering occurrence of an abnormality such as an explosion. In addition, it is considered that it is necessary to consider installing an insulation device so that the outside temperature is not transferred to the inside.

An object of the present invention is to provide an explosion panel assembly capable of venting itself to the outside when the pressure inside the container becomes higher than normal.

Another object of the present invention can be said to be to provide an explosion panel assembly of an energy storage system having an insulation function in which the inside of the container is not affected by external temperature.

Here, reducing the pressure in advance so that the pressure inside the container of the energy storage system does not reach the set limit pressure, or minimizing the influence of external temperature change is closely related to maintaining the safety of the energy storage device in practice. can be said to be obvious.

The explosion panel assembly of the energy storage system of the present invention includes an explosion panel that is ruptured by high pressure generated inside the energy storage system container, an upper flange formed on the upper end, communicating with the inside of the container, and an exhaust window for exhaust. It includes a communicating pipe body provided, and a counterflange supporting the explosion panel by being fastened to the upper flange of the communicating pipe body in a state where the explosion panel is interposed therebetween. In addition, the opening and closing plate 40 is supported by the communication tube (on one side), adheres to the outer surface of the communication tube to close the exhaust window when there is no external force, and is spaced apart from the outer surface of the communication tube by the external force to open the exhaust window. .

An explosion panel assembly of an energy storage system according to another embodiment includes a duct forming member for forming a duct in a communication tube around an exhaust window, and a duct forming member installed on the downstream side of the duct formed by the duct forming member to open and close the plate by operation. It is configured to further include an exhaust fan generating an opening air flow.

The explosion panel assembly of the energy storage system according to another embodiment is installed in the communication tube corresponding to the upper part of the exhaust window and is configured to further include a protective cover covering the opening and closing plate.

According to the explosion panel assembly of the present invention having the above configuration, although the pressure inside the container does not reach the explosion pressure, when it is high, it can be seen that the opening and closing plate is opened by itself and is configured to be partially exhausted to the outside. With this configuration, it is possible to provide an explosion panel assembly that can further increase safety.

When it is determined that it is safer to exhaust at least some of the air in the internal environment of the container, the opening/closing plate blocking the exhaust window generates an external force (force by air flow) to exhaust at least some of the air. This configuration is thought to be useful when a safety-threatening gas is detected inside the container even though the pressure inside the container is low.

And considering the insulation device applicable in the present invention, an insulation cover made of an insulation material is installed on the outside of the explosion panel, that is, the part closest to the outside, where insulation is most vulnerable in the energy storage system, thereby providing basic insulation against outside air. know that it can be done. It is thought that the configuration of the insulating cover can basically reduce the influence of the container temperature by the external temperature as much as possible, thereby providing considerable economic help and safety to the container operation of the energy storage system.

And according to the present invention, it can be seen that the inner insulating layer is formed on the inside of the upper flange, which can be said to be the inside of the above-described insulating cover. It goes without saying that the thickness of such an internal insulating layer can be easily adjusted by, for example, a configuration using a fiber insulating material. In addition, since it is possible to selectively implement the heat insulating cover or the inner heat insulating layer, it is thought that an optimal heat insulating device can be implemented for various external environments.

In addition, since the rupture line is formed on the insulated cover of the present invention, it is designed so that it can be ruptured reliably like the rupture of an explosion panel by an abnormal event inside the container, thus ensuring sufficient reliability as an explosion device. In addition, it can be said that sufficient structural strength can be secured by a plurality of strength reinforcing ribs extending downward on the bottom surface of the insulation cover of the present invention.

1 is an explanatory view illustrating an explosion panel of a general energy storage system.
Figure 2 is an illustration of an explosion panel having an internal air discharge function of the present invention.
Figure 3 is an exemplary cross-sectional view of the explosion panel assembly of the present invention.
Figure 4 is a partial illustrative cross-sectional view of an explosion panel assembly of another embodiment of the present invention.

Next, the present invention will be described in more detail based on the embodiments shown in the drawings. The explosion assembly of the energy storage system of the present invention is installed on the outer surface of the energy storage system container, and basically has a function of discharging high-pressure gas and flame due to an abnormal event inside the container to the outside. In addition, the present invention focuses on discharging the air inside the container to the outside when a higher pressure than normal is formed even if it does not reach high pressure.

As shown in FIG. 2, the explosion panel assembly of the energy storage system according to the present invention includes an explosion panel 24 installed inside a communication passage 10A communicating with the inside of a container and exploded by a pressure higher than a set value; It includes a support device 11 for supporting such an explosion panel 24. The explosion panel 24 is supported by the supporting device 11, and when a pressure higher than the set pressure occurs, the explosion panel 24 ruptures and the high force inside the container escapes to the outside.

According to the embodiment of the support device 11, as shown in FIG. 3, the communication tube 10 having the upper flange 12 formed on the upper end and coupled to the upper part of the communication tube 10 It includes a counterflange 20. The communicating tube body 10 is coupled to directly communicate with the inside of a container (not shown) of the energy storage system or coupled to the outside of a duct connecting the inside and outside of the container, and is referred to as a higher concept of a conduit connecting the inside and outside of the container. can do.

The communication tube 10 forms a passage through which air inside the container is discharged to the outside when an abnormal event occurs inside the container. And an explosion panel 24 is installed between the upper flange 12 and the counter flange 20. Explosive panel 24 is a panel that is ruptured in response to this high pressure when a set high pressure is created based on a flame generated inside the container.

Since the configuration of the explosion panel 24 itself can be used in a variety of substantially known configurations, a detailed description thereof will be omitted. Summarizing such a configuration, an explosion panel 24 capable of discharging internal gas to the outside by being ruptured by a high pressure inside the container, an upper flange 12 supporting the explosion panel 24, and a counter flange ( 20) can be said to be provided in the container of the energy storage system.

3, a plurality of exhaust windows 8 are formed in the middle of the communication tube 10 extending in the vertical direction. Also, an opening/closing plate 40 is installed outside the portion where the exhaust window 8 is molded. The opening/closing plate 40 is made to come into close contact with the outer surface of the communication tube 10 so as to block the exhaust window 8 when there is no external force. Also, when an external force is generated to separate the opening/closing plate 40 from the communicating tube body 10, the opening/closing plate 40 separates from the outer surface of the communicating tube body 10.

In this way, when the opening/closing plate 40 falls on the outer surface of the communication pipe body 10, the exhaust window 8 substantially communicates the inside and outside of the container with each other. And this can be said to be a state in which the air inside the container can be discharged to the outside. For example, if the explosion panel 10 is designed to rupture when the internal pressure of the energy storage system container reaches 0.1 bar, when the internal pressure of the container approaches this, the above-described opening and closing plate 40 is opened and closed by an external force called the internal pressure of the container. It is separated from the communication pipe body 10 and opens the exhaust window 8.

When the exhaust window 8 is opened while the opening/closing plate 40 is opened due to the increase in the internal pressure of the container, the internal pressure of the container is obviously reduced. It will be easily understood that when the internal pressure of the container is reduced in this way, the risk level can be remarkably lowered even for an abnormal phenomenon (explosion) inside. Next, an embodiment of the opening and closing plate 40 will be described.

As mentioned above, the opening/closing plate 40 must react to be opened apart from the exhaust window 8 by an external force trying to open it. To this end, various forms of configuration are possible, for example, a plate-shaped synthetic resin material or metal material having low elasticity may be mentioned. And it is thought that a rubber plate is also possible. In this case, as shown in FIG. 3, it is preferable to make the lower part of the opening and closing plate 40 heavier or further include a member having a high specific gravity in order to function as a kind of weight at the lower part.

When the opening/closing plate 40 is opened by such a reaction to the pressure and the pressure inside the container is lowered, the opening/closing plate 40 is automatically closed by an elastic restoring force. In the case of making the opening and closing board with a rubber plate, as shown in the figure, a thicker part is formed at the lower end of the rubber opening and closing plate 40 to help restore (close the exhaust window) by the elastic force of the rubber plate, thereby reducing this part (weight). It is configured so that the opening/closing plate 40 closes the exhaust window 8 more reliably by using its own weight.

In the illustrated embodiment, it can be seen that the opening/closing plate 40 is in a vertical state when there is no external force and closes the exhaust window 8 by being in close contact with the communication pipe 10 . And in the present invention, the external force that opens the exhaust window 8 can be substantially referred to as air flow or internal pressure. It can be said that the force caused by the flow of air.

In addition, in order to prevent the penetration of external foreign substances (infiltration of foreign substances by rain or wind) as to prevent unnecessary external force from acting on the opening and closing plate 40 surrounding the above-described exhaust window 8 from the outside, the protective cover ( 42) is also possible. The protective cover 42 is preferably installed to extend outwardly from the top of the above-described opening and closing plate 40 to surround the opening and closing plate 40 .

In the illustrated embodiment, the protective cover 42 extends radially outward (horizontally) from the communication tube 10 corresponding to the upper portion of the opening and closing plate 40, and then extends downward to cover the opening and closing plate 40. It can be seen that it is installed in the communication pipe body 10. Next, referring to FIG. 4, another embodiment will be described.

It can be seen that the embodiment shown in FIG. 4 is configured such that the opening and closing plate 40 is opened when the exhaust fan 46 installed outside the opening and closing plate 40 operates. For this operation, the exhaust fan 46 is preferably installed on the outermost side of the duct formed by the duct forming member 46 . The duct forming member 40 extends horizontally from the outer surface of the communication tube 10, so that the exhaust fan 46 is installed on the most downstream side of the duct formed from the exhaust window 8.

In addition, the duct forming member 40 forms one duct formed in the upper and lower portions of the exhaust fan 46, and a pair of duct forming members 40 corresponding to the upper and lower parts of the exhaust fan 46 are communicating tubes ( 10), it is possible to extend outwardly. Alternatively, as shown, the duct forming member 40 may be molded into a single plate corresponding to the upper portion of the exhaust fan 46 and the upper surface of the container may be used as a part of the duct.

Summarizing the configuration related to the exhaust fan 46, by installing the duct forming member 40 to form a duct around the exhaust fan 46, the air flow formed when the exhaust fan 46 operates It can be seen that the opening and closing plate 40 is configured to open. In this way, not only the force due to the pressure inside the container, but also the force due to the flow of air generated inside the duct by driving the exhaust fan 46 acts as an external force to open the opening/closing plate 40 .

The operation of the exhaust fan 46 for opening the opening/closing plate 40 is controlled by, for example, a controller. Although the pressure inside the container is not high enough to explode the explosion panel 24, the control unit operates the exhaust fan 46 when it is detected that it is a good situation to exhaust the air inside the container to the outside. For example, when detecting that a combustible gas is generated due to an abnormality of the battery inside an energy storage system such as a lithium ion battery, the control unit can operate the exhaust fan 46 .

Next, with reference to Figure 3, the configuration for the insulation of the explosion panel 24 of the present invention will be described. According to the present invention, the first insulation device is installed inside the explosion panel 24 (the lower portion of the explosion panel in FIG. 3), and the second insulation device is installed on the outside of the explosion panel 24 (the upper portion of the explosion panel in FIG. 3). device is installed First, a first heat insulating device installed inside the explosion panel 24 will be described.

A fiber insulation 18 is installed directly below the explosion panel 24 interposed between the upper flange 12 and the counter flange 20. Examples of such a fiber insulation material 18 include glass wool, Ceracool fibers, and the like. Such a fiber insulation material 18 is provided inside the tube-shaped communicating tube body 10, and is supported by, for example, a metal mesh 16.

That is, the fiber insulation 18 is located inside the explosion panel 24 in the communication tube 10, and the explosion panel 24 is a metal mesh that can be fixed to the communication tube 10 by welding or the like ( 16) can be said to be supported. Since this fiber insulation 18 is lightweight, it is considered that it is easily blown away by the internal pressure that ruptures the explosion panel 10 and does not affect the discharge of high-pressure gas or the like at all.

Next, a second heat insulating device installed on the top of the explosion panel 24 is installed. As shown in FIG. 3, a heat insulating cover 30 is installed on the top of the explosion panel 24 to have a heat insulating function for the inside of the container. It can be said that the insulation cover 30 of the present invention is installed on the outermost side of the container of the energy storage system so that the outside temperature is not conducted to the inside of the container.

The heat insulating cover 30 of the present invention is made of a material capable of maximally suppressing heat conduction due to its low thermal conductivity, for example, a solid material such as Styrofoam. The upper surface 32 of the heat insulating cover 30 is molded into an inclined surface to prevent external low-temperature substances such as snow or rain from accumulating on the upper surface of the heat insulating cover 30 . In the illustrated embodiment, it can be seen that the upper surface 32 of the heat insulation cover 30 is formed as an inclined surface having a center as a vertex and decreasing toward the outside.

It is preferable that the edge portion of the heat insulating cover 30 is installed to contact the upper surface of the counter flange 20 described above. In addition, by adopting a separate heat insulating cover fixing means on the edge of the heat insulating cover 30, it will be possible to maintain a stable state fixed to the counter flange 20. The insulating cover fixing means may be composed of, for example, adhesives or bolts and nuts. In the illustrated embodiment, it can be seen that the interference avoidance groove 38 is formed near the edge of the heat insulation cover 30 so that interference with the counter flange 20 does not occur.

In this way, the edge portion of the insulating cover 30 is the insulating cover fixing means (eg adhesive or double-sided adhesive tape) with respect to the support means (in the illustrated embodiment, the upper flange and / or counter flange) for supporting the explosion panel 24 etc.) must be able to maintain a solidly fixed state. Next, a structure for rupture of the insulation cover 30 itself made of an insulation material, for example, Styrofoam, and a structure for reinforcing structural strength will be looked at.

As described above, the heat insulation cover 30 has a certain thickness for heat insulation, and has a state in which the edge portion is fixed to the support means (upper flange and counter flange) for supporting the explosion panel. Therefore, when the explosion panel 24 explodes, the insulation cover 30 will have to burst without forming any resistance. To this end, it is preferable to form a rupture line that has a relatively thin thickness on the insulation cover 30 .

That is, when a rupture line made of a linear shape thinner than the entire thickness of the insulation cover 30 is formed on one side of the insulation cover 30, preferably on the bottom surface, the insulation cover 30 like the explosion of the explosion panel 24 By tearing the rupture line of the, the insulation cover 30 will also rupture like the explosion panel (24). The rupture line of the insulation cover 30 may be made at the same time as when the insulation cover 30 is formed, or may be formed by physical processing after the insulation cover 30 is formed.

The rupture line of this insulation cover 30 is formed on the bottom surface of the insulation cover 30, which can be ruptured by the rupture of the explosion panel 24 or the high pressure of the gas coming out of the rupture of the explosion panel 24 It is sufficient if it is, and it is considered that it cannot be limited by its shape or the like. For example, the shape of the rupture line of the insulation cover 30 may be made in the same shape as the known scored line of the rupture disk, for example, it may be made in a cross shape.

In addition, since the heat insulation cover 30 of the present invention is mounted on the outside of the container, it must have structural strength that can be sufficiently maintained against forces based on the external environment. As mentioned above, forming the upper surface of the explosion panel 30 into an inclined surface to prevent rain or snow from accumulating on it is one of the configurations for securing structural strength against external force (load due to rain or snow). can do.

In order to secure structural strength against such an external force, it is preferable to form a strength reinforcing rib on the bottom surface of the insulating cover 30 of the present invention. The strength reinforcing ribs are formed to protrude downward from the bottom surface of the heat insulating cover 30, and may be formed in a linear shape or a lattice shape, for example. In Figure 2, it can be seen that the strength reinforcing ribs 34 extending downward from the lower surface of the insulating cover 30 are shown.

The lower end of the illustrated strength reinforcing rib 34 is in contact with the explosion panel 24. In this case, the strength reinforcing rib 34 reinforces the strength of the insulation cover 30 and at the same time the insulation cover 30 It also functions as a support to prevent sagging downward. Like the rib 34 shown here, extending downward from the bottom surface of the insulation cover 30 to contact the upper surface of the explosion panel 24 to prevent sagging, ultimately reinforcing the structural strength of the insulation cover 30 you could do that too.

It is expected that various modifications are possible within the basic technical scope of the present invention, and it is natural that the scope of protection of the present invention should be interpreted based on the description of the claims at the time of registration. I think.

8 ..... exhaust window
10 ..... communication tube
16 ..... Metal mesh
18 ..... Fiber Insulation
12 ..... upper flange
20 ..... counter flange
24 ..... Explosive panel
30 ..... Insulation cover
32 ..... top of insulation cover
34 ..... strength reinforcing ribs
40 ..... Opening plate
42 ..... protective cover
46 ..... Duct forming member

Claims (3)

an explosion panel 24 that is ruptured by the high pressure generated inside the energy storage system container;
A communication tube (10) having an upper flange (12) molded at the upper end, communicating with the inside of the container, and having an exhaust window (8) for exhaust;
A counter flange 20 supporting the explosion panel 24 by being fastened with the upper flange 12 of the communication pipe 10 in a state where the explosion panel 24 is interposed;
It is supported by the communication tube body 10, elastically adheres to the outer surface of the communication tube body 10 so as to close the exhaust window 8 when there is no external force, and is spaced apart from the outer surface of the communication tube body 10 by external force to close the exhaust window ( 8) the opening and closing plate 40 to open; and
The bottom of the edge portion of the insulation cover 30 is installed to contact the upper surface of the counterflange 20 so as to cover the explosion panel 24, and the upper surface is molded into an inclined surface so that foreign substances do not accumulate, and ruptures as the explosion panel explodes. An explosion panel assembly of an energy storage system composed of a heat insulation cover 30 formed with a rupture line on the bottom surface so that it can be formed and a strength reinforcing rib 34 extending downward from the bottom surface to reinforce structural strength.
The method of claim 1, wherein the duct forming member for forming a duct in the communication pipe body 10 around the exhaust window 8 and the opening and closing plate 40 installed on the downstream side of the duct formed by the duct forming member and operating Explosion panel assembly of the energy storage system further comprising an exhaust fan that generates an air flow to open the.
The explosion of the energy storage system according to claim 1 or 2, further comprising a protective cover (42) installed in the communication tube (10) corresponding to the upper part of the exhaust window (8) and surrounding the opening and closing plate (40). panel assembly.

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