KR20190096691A - Container for power conversion system - Google Patents

Abstract

The present invention relates to a container for a power converting apparatus, and more specifically, to a container for a power converting apparatus which can lower heat generated from an outdoor power converting apparatus installed in a container. To this end, the container for a power converting apparatus according to one embodiment of the present invention, in a container for a power storage apparatus installed on the ground and having an upper plate, a lower plate and a side wall coupled to each other to form an internal space, may comprise: a power conversion system (PCS) provided in the internal space and converting electrical characteristics of power provided from an external device; a blower having a first blowing fan provided at the side wall and introducing air from the internal space and a second blowing fan discharging the air introduced through the first blowing fan to the outside by accelerating the air through a plurality of blowing holes; and a blowing pipe including an inlet connected to the blower to introduce the air discharged to the outside, an outlet connected to the lower plate to discharge the air introduced through the inlet to the inner space, and a pipe buried underground to form an air flow path between the inlet and the outlet.

Description

Container for power converter {CONTAINER FOR POWER CONVERSION SYSTEM}

The present invention relates to a container for a power converter, and more particularly, to a container for a power converter that can lower heat generated by an outdoor type power converter installed in a container.

A large capacity power conversion system (PCS) is a device that converts the power generated in the power plant according to the characteristics of the power system, or converts the electrical characteristics of the power between the power system and the battery.

In order to perform such an operation, the power conversion apparatus includes a plurality of power switching elements such as IGBTs and MOSFETs, and controls the turn-on and turn-off of the power switching elements, thereby converting electrical characteristics of power.

On the other hand, as the importance of renewable energy generation has recently emerged, decentralization of energy sources is being promoted, and accordingly, power conversion devices are installed outdoors according to the location of the renewable energy generation device.

The power conversion device installed outdoors is installed inside a housing such as a container, and is protected from various external factors such as snow, rain, dust, etc. At this time, the temperature inside the housing may increase rapidly according to the above-described power conversion operation. Can be.

More specifically, when the power switching device converts power by repeatedly performing turn on and turn off operations, a loss due to power conversion occurs in each power switching device, and such power loss may be released as heat.

The heat emitted from the power switching element raises the temperature inside the housing, and if the temperature inside the housing rises excessively, not only the power conversion device but also a plurality of devices provided inside the housing may fail.

Accordingly, there is a demand for a method capable of lowering the temperature of the inner space of the housing where the power converter is installed.

According to the present invention, the air inside the container is introduced into the container through an air blowing fan which is not provided with a blowing hole, and the air inside the container is discharged quickly through the air blowing fan provided with the air blowing hole, thereby quickly discharging the air inside the container to the outside. An object of the present invention is to provide a container for a power conversion device.

In addition, the present invention is to provide a container for a power conversion device that can lower the temperature of the air inside the container as the air is circulated by passing the air discharged to the outside through the blown pipe buried underground to the inside of the container. The purpose.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention, which are not mentioned above, can be understood by the following description, and more clearly by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

In the container for a power conversion apparatus according to an embodiment of the present invention for achieving the above object is installed on the ground, the upper plate, the lower plate and the side wall are coupled to each other to form an inner space, the interior PCS (Power Conversion System) which is provided in the space, and converts the electrical characteristics of the power provided from the external device, provided on the side wall, the first blowing fan and the first blowing fan for introducing air in the internal space A blower having a second blower fan for accelerating the discharged air through a plurality of blower holes and discharged to the outside, and an inlet connected to the blower and introducing air discharged to the outside, and connected to the lower plate through the inlet An outlet for discharging the introduced air into the internal space, and an air passage between the inlet and the outlet is buried underground It characterized in that it comprises a blower pipe having a pipe to be.

As described above, according to the present invention, the air in the container is introduced through the blowing fan having no blowing hole, and the air introduced through the blowing fan having the blowing hole is discharged to the outside. There is an effect that can be quickly discharged to the outside.

In addition, according to the present invention by passing the air discharged to the outside through the blown pipe embedded in the basement to the container interior space, there is an effect that can lower the temperature of the air inside the container as the air is circulated.

1 is a view showing a container for a power conversion device according to an embodiment of the present invention.
2 is a view showing the structure of a container installed on the ground.
3 is a view showing a control flow of the container for the power conversion device shown in FIG.
4 is a view showing an example of the blower shown in FIG.
5 is a view showing another example of the blower shown in FIG.
6 to 8 are views illustrating various examples of the blower tube illustrated in FIG. 1.

The above objects, features, and advantages will be described in detail with reference to the accompanying drawings, whereby those skilled in the art to which the present invention pertains may easily implement the technical idea of the present invention. In describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

Hereinafter, the structure and operation process of the container for a power storage device will be described in detail with reference to FIGS. 1 to 3.

1 is a view showing a container for a power conversion apparatus according to an embodiment of the present invention, Figure 2 is a view showing the structure of a container installed on the ground. 3 is a diagram illustrating a control flow of the container for the power converter shown in FIG. 1.

Referring to FIG. 1, a container 1 for a power converter according to an embodiment of the present invention may include a PCS 110, a blower 120, a blower tube 130, a first solar panel 140, and a second aspect. The light panel 150, the transformer 160, and the switchboard 170 may be included. The container 1 for a power storage device shown in FIG. 1 is according to one embodiment, and its components are not limited to the embodiment shown in FIG. 1, and some components may be added, changed or deleted as necessary. Can be.

The container 1 for a power conversion device of the present invention relates to a container that performs a power conversion function. More specifically, the container 1 for a power converter relates to a container for converting the power generated by the power generation device according to the characteristics of the power system, or to convert the electrical characteristics of the power between the power system and the battery.

Here, the power system refers to a system in which power generation, substations, transmission and distribution lines, and loads are integrated to generate and use power. For example, power systems may include thermal and nuclear power plants that produce electricity, and power plants that use wind, solar power, and various other renewables. In addition, the power system may include industrial facilities such as factories from ordinary households that use electricity.

However, in the present invention, the power system and the power plant are divided, and the power plant may include a solar panel which will be described later.

Referring to FIG. 2, the container 10 having the PCS 110 described below is installed on the ground 200, and the upper plate 11, the lower plate 12, and the side wall 13 are coupled to each other to form the container 10. It can form a space.

Here, the meaning that the container 10 is installed on the ground 200 means that the container 10 is installed adjacent to the ground 200 or spaced apart in the upward direction of the ground 200. It can contain everything.

The upper plate 11, the lower plate 12, and the side wall 13 may be formed of a double partition wall. For example, the side wall 13 may include an inner wall adjacent to the inner space and an outer wall adjacent to the outside. The space between the inner wall and the outer wall may be filled with a member for preventing condensation, vibration, and the like, and may be filled with a member for insulation.

On the other hand, as shown in Figure 1, the side wall 13 may be provided with one or more opening and closing means (13 '), each opening and closing means (13') is a PCS 110, a transformer 160 and a switchgear panel described later An interior space provided with 170 may be connected to the outside.

Referring back to FIG. 1, a power conversion system 110 is provided in an internal space and may convert electrical characteristics of power provided from an external device. That is, the PCS 110 may be electrically connected to an external device, receive power from the external device, and convert electrical characteristics of the provided power.

Here, the electrical characteristics may include the type of power (AC or DC), the size of the power, the frequency of the power, and the like.

An external device that is electrically connected to the PCS 110 may include any power device capable of generating power, using power, or charging and discharging power, and may include a solar panel that produces power. .

The solar panels 140 and 150 may be an assembly in which one or more solar cells that produce (generate) electrical energy using solar energy are connected in series or in parallel. The solar panels 140 and 150 may convert light energy of incident sunlight and output the DC energy.

In the present invention, the solar panels 140 and 150 include a first solar panel 140 and a second solar panel 150, and as shown in FIG. 1, the top plate 11 of the container shown in FIG. 2. It may be provided in).

First, the first solar panel 140 may be provided on the outer surface of the container top plate 11. More specifically, the first solar panel 140 may be bound to the outer surface of the container top plate 11 by any binding member. For example, the first solar panel 140 may be bolt fastened to an outer surface of the container top plate 11, or inserted into a groove formed in the container top plate 11 to be bound.

Next, the second solar panel 150 may be hinged to the outer surface of the container top plate 11 to rotate about the top plate 11. Here, the hinge coupling means that the two objects can be rotated about the hinge axis, but are coupled so that a few horizontal horizontal movements are fixed. Accordingly, the second solar panel 150 may be rotated with respect to the outer surface of the container top plate 11 but may be coupled so that horizontal and vertical movements are fixed.

More specifically, a hinge fastening groove may be formed at one side edge of the container upper plate 11, and a hinge axis may be formed at one side end of the second solar panel 150. The hinge axis of the second solar panel 150 may be inserted into the hinge fastening groove of the container top plate 11, and the second solar panel 150 may be rotated with respect to the top plate 11 of the container based on the hinge axis. have.

Referring to FIG. 3, the PCS 110 may receive power from a solar panel and provide power converted from electrical characteristics to at least one of the power system 300 and the battery 180.

In one example, the PCS 110 may provide power to the power system 300 provided from the solar panel. In this case, the PCS 110 may receive DC power from the solar panel and convert the provided DC power into AC power. To this end, the PCS 110 may include a DC / AC converter for converting DC power into AC power.

The PCS 110 may convert the DC power generated from the solar panel into AC power having a size required by the power system 300 and provide the power to the power system 300.

Meanwhile, as shown in FIG. 1, the container 1 for a power conversion device includes a transformer 160 that is provided in an interior space of the container 10 and transforms power converted by the PCS 110, and inside the container 10. It may further include a switchgear 170 is provided in the space and supplies the transformed power to the power system 300.

The transformer 160 may be electrically connected to the output terminal of the PCS 110 to convert the magnitude of AC power converted by the PCS 110 into the magnitude of power supplied to the power system 300.

In general, the magnitude of the AC power supplied to the power system 300 may be greater than the magnitude of the AC power output from the PCS 110. Accordingly, the transformer 160 may transform the AC power converted by the PCS 110 into a high voltage having a predetermined size.

For example, when the amount of AC power required by the power system 300 is 22,900 [V], the PCS 110 may convert the DC power generated from the solar panel to a low voltage such as 220 [V] or 380 [V]. The AC 160 converts the AC power, and the transformer 160 may transform the AC voltage of the low voltage converted by the PCS 110 into a high voltage of 22,900 [V].

In other words, when the maximum amount of AC power that PCS 110 can generate using DC power is smaller than the amount of AC power required by power system 300, transformer 160 converts in PCS 110. The size of the AC power can be transformed into the size of the power supplied to the power system 300.

The switchboard 170 may be electrically connected between the output terminal of the transformer 160 and the power system 300 to supply AC power transformed by the transformer 160 to the power system 300.

In addition, the switchboard 170 may be equipped with a circuit breaker for monitoring the AC power of the power system 300 to protect the entire facility from an accident such as power failure, short circuit, short.

In another example, the PCS 110 may provide the battery 180 with power received from the solar panels 140, 150. In this case, the PCS 110 may receive DC power from the solar panels 140 and 150, and provide the DC power provided to the battery 180 provided in the interior space of the container 10 or the exterior of the container 10. have. To this end, the PCS 110 may be electrically connected to the battery 180.

The PCS 110 may include a DC / DC converter that converts electrical characteristics of DC power generated in the solar panels 140 and 150 according to electrical characteristics of power stored in the battery 180.

When the capacity of the battery 180 is relatively small, the battery 180 may be provided together with the PCS 110 in the inner space of the container 10. On the other hand, when the capacity of the battery 180 is relatively large, the battery 180 may be provided outside the container 10 or may be provided inside a battery-only container (not shown).

Referring back to FIG. 3, the PCS 110 may receive power from the power system 300 and provide power to which the electrical characteristics are converted to the battery 180. In addition, the PCS 110 may receive power from the battery 180 and provide power to which the electrical characteristics are converted to the power system 300.

First, when the PCS 110 provides the battery 180 with power provided from the power system 300, the PCS 110 stores the high voltage AC power provided from the power system 300 in the battery 180. Can be converted to DC power. To this end, the PCS 110 may include an AC / DC converter that converts AC power into DC power, and the aforementioned transformer 160 may be used to convert AC power of high voltage into AC power of low voltage. .

Next, when the PCS 110 provides the power system 300 with the power provided from the battery 180, the PCS 110 requests the AC power provided by the battery 180 from the power system 300. Can be converted to power. To this end, the PCS 110 may include a DC / AC converter for converting DC power into AC power, and the above-described transformer 160 may be used to transform AC power of low voltage generated by converting DC power. Can be.

As described above, the PCS 110 may include a DC / AC converter, an AC / DC converter, a DC / DC converter, and the like, and each converter may include a plurality of power switching elements. The power conversion operation of the PCS 110 is performed according to the turn-on and turn-off operation of the power switching device. At this time, heat may be generated by the switching operation of the power switching device. The temperature may rise.

In order to lower the temperature of the internal space, as shown in FIG. 1, the container sidewall 13 may be provided with one or more vent holes 13 ″. However, the vent 13 ″ provides a passage in which the air in the inner space and the outside air are mixed by diffusion, and has a functional limitation in directly lowering the temperature of the inner space.

Accordingly, the container 1 for an electric power storage device of the present invention includes a blower 120 for lowering the temperature of the internal space. Hereinafter, the function of the blower 120 will be described with reference to FIGS. 1, 4, and 5. And the structure to be described in detail.

4 is a diagram illustrating an example of the blower illustrated in FIG. 1, and FIG. 5 is a diagram illustrating another example of the blower illustrated in FIG. 1.

1 and 4, the blower 120 is provided on the container sidewall 13, and is introduced through the first blowing fan 121 and the first blowing fan 121 to introduce air from the internal space. It may be provided with a second blowing fan 122 for accelerating the air discharged to the outside.

The blower 120 may be configured as a module including a housing 120 ', a first blowing fan 121 and a second blowing fan 122 disposed at both ends of the housing 120', It may be installed on the container side wall 13 so that a part may protrude into the container 10 or a part protrude out of the container 10.

As described above, when the side wall 13 is formed of an inner wall adjacent to the inner space and an outer wall adjacent to the outside, the first blowing fan 121 may be provided on the inner wall to introduce air from the inner space, and the second blower The fan 122 may be provided at the outer wall to discharge the air introduced through the first blowing fan 121 to the outside. In this case, the housing 120 ′ of the blower 120 may be formed in the space between the inner wall and the outer wall.

More specifically, the first blowing fan 121 may accelerate the ambient air in a predetermined direction, thereby introducing air in the space of the container 10 into the housing 120 ′. In addition, the second blowing fan 122 may discharge the air in the housing 120 'to the outside of the container 10 by accelerating the air in the housing 120' in a predetermined direction.

Each of the blowing fans 121 and 122 may be driven by a driving motor (not shown), and the driving motor may adjust a rotational speed of the blowing fans 121 and 122 by applying a DC or AC voltage.

Each of the blower fans 121 and 122 fills the longitudinal section of the housing 120 ', thereby forming a constant and strong air flow path. In addition, the driving motor may form a stronger air flow path by increasing the rotational speed of the blowing fans 121 and 122.

On the other hand, although the housing 120 'shown in FIG. 4 is expressed in the shape of a cylinder, the housing 120' may have any shape (for example, a square pillar, a hexagonal pillar, etc.) capable of introducing or discharging air. It can be formed as.

A plurality of blowing holes 122 ″ may be formed in the second blowing fan 122 to accelerate the air introduced into the housing 120 ′. More specifically, as shown in FIG. 4, the second blowing fan 122 may include a plurality of second blowing vanes 122 ′, and the plurality of blowing holes are formed in the second blowing vanes 122 ′. 122 '') can be formed. Here, the blowing hole 122 ″ may be formed in any size and shape.

Some of the air discharged to the outside by the second blower fan 122 may be discharged through a plurality of blower holes. In other words, the air passage for some of the air discharged from the inner space to the outside may be narrowed. Accordingly, the speed of the air passing through the narrowed air passage can be increased.

That is, the second blowing fan 122 may form a narrow air passage through the plurality of blowing holes 122 ″, thereby accelerating the air inside the housing 120 ′ and discharging it to the outside.

As described above, the second blowing fan 122 may include a plurality of second blowing vanes 122 ′, and likewise, the first blowing fan 121 may also include a plurality of first blowing vanes 121 ′. Can be.

At this time, the interval between the second blowing blades 122 'may be smaller than the interval between the first blowing blades 121'.

More specifically, the area occupied by the second blowing blades 122 'with respect to the longitudinal section of the housing 120' may be larger than the area occupied by the first blowing vanes 121 'with respect to the longitudinal section of the housing 120'. . For example, the size of the second blowing blade 122 ′ may be larger than the size of the first blowing blade 121 ′.

Accordingly, the interval between the second blowing blades 122 'may be formed to be narrower than the interval between the first blowing blades 121', and the flow path of air introduced through the first blowing fan 121 is the second blowing fan. It may narrow down past 122.

When the flow path is narrowed, the speed of the air in the flow path is accelerated, so the second blowing fan 1220 may accelerate the air in the housing 120 'and discharge it to the outside.

Meanwhile, referring back to FIG. 4, the size and shape of the first blowing blade 121 ′ and the second blowing blade 122 ′ may be the same as described above. However, the number of the second blowing blades 122 'may be greater than the number of the first blowing blades 121'.

Accordingly, the distance D2 between the adjacent second blowing blades 122 ′ may be narrower than the distance D1 between the adjacent first blowing blades 121 ′.

Due to the above-described structure, the air flow path for the air discharged from the inner space to the outside can be narrowed, so that the speed of the air passing through the narrowed air flow path can be increased.

Meanwhile, the blower 120 is provided between the first blower fan 121 and the second blower fan 122 and accelerates the air introduced through the first blower fan 121 to the second blower fan 122. Auxiliary blowing fan 123 may be further provided.

Referring to FIG. 5, the auxiliary blowing fan 123 may accelerate the air moving from the first blowing fan 121 to the second blowing fan 122 by accelerating the air inside the housing 120 ′ in a predetermined direction. Can be. The auxiliary blowing fan 123 may also be driven by the above-described driving motor.

The auxiliary blowing fan 123 fills the longitudinal cross section of the housing 120 ′, thereby forming a constant and strong air flow path.

The auxiliary blowing fan 123 may be provided with a plurality of auxiliary blowing holes 123 ″ for accelerating air in the housing 120 ′. More specifically, as shown in FIG. 5, the auxiliary blowing fan 123 may include a plurality of third blowing vanes 123 ′, and the plurality of auxiliary blowing holes 123 ′ may be provided in the third blowing vanes 123 ′. 123 '' may be formed.

Some of the air provided to the second blowing fan 122 by the auxiliary blowing fan 123 may be discharged through the plurality of auxiliary blowing holes 123 ″. In other words, the air flow path for the air moving from the first blowing fan 121 to the second blowing fan 122 may be narrowed by the auxiliary blowing holes 123 ″. Accordingly, the speed of the air passing through the narrowed air passage can be increased.

That is, the auxiliary blowing fan 123 forms a narrow air flow path through the plurality of auxiliary blowing holes 123 ″, thereby accelerating the air inside the housing 120 ′.

At this time, the auxiliary blowing fan 123 may have a structure for continuously accelerating the air until the internal air introduced into the first blowing fan 121 is discharged to the outside through the second blowing fan 122. .

More specifically, the spacing between the third blowing blades 123 'may be narrower than the spacing between the first blowing blades 121' and wider than the spacing between the second blowing blades 122 '.

The area occupied by the third blowing vanes 123 'with respect to the longitudinal section of the housing 120' is greater than the area occupied by the first blowing vanes 121 'with respect to the longitudinal section of the housing 120', and the housing 120 ' It may be smaller than the width occupied by the second blowing blade 122 ′ for the longitudinal section of the. For example, the size of the third blowing blade 123 'may be larger than the size of the first blowing blade 121' and smaller than the size of the second blowing blade 122 '.

Accordingly, the spacing between the third blowing vanes 123 'may be smaller than the spacing between the first blowing vanes 121', wider than the spacing between the second blowing vanes 122 ', and the first blowing fan 121 The flow path of the air introduced through) may be sequentially narrowed while passing through the auxiliary blowing fan 123 and the second blowing fan 122.

Through the above-described structure, the auxiliary blowing fan 123 may accelerate the air inside the housing 120 '.

Meanwhile, referring back to FIG. 5, the sizes and shapes of the first to third blowing blades 121 ′, 122 ′, and 123 ′ may be the same as described above. However, the number of the third blowing blades 123 'may be greater than the number of the first blowing blades 121' and less than the number of the second blowing blades 122 '.

Accordingly, the spacing D3 between the third blowing vanes 123 'of the auxiliary blowing fan 123 is narrower than the spacing D1 between the first blowing vanes 121', and the spacing between the second blowing vanes 122 '. It may be wider than (D2). By having the above-described structure, the air flow path in the housing 120 'can be narrowed step by step from the first blowing fan 121 to the second blowing fan 122.

In addition, the density of the auxiliary blowing holes 123 ″ of the auxiliary blowing fan 123 may be smaller than the density of the blowing holes 122 ″ of the second blowing fan 122. In other words, the number of the auxiliary blowing holes 123 ″ may be smaller than the number of the blowing holes 122 ″ formed in the same area. Accordingly, the air flow path in the housing 120 ′ may be narrowed step by step from the first blowing fan 121 to the second blowing fan 122.

As described above, according to the present invention, the air in the container 10 is introduced into the container 10 through a blowing fan not provided with a blowing hole, and the air introduced through the blowing fan provided with the blowing hole is discharged to the outside. 10) The internal air can be discharged quickly to the outside.

In other words, the present invention may accelerate the air discharged to the outside through the blower 120, so that the discharged air can easily pass through the blower tube 130 to be described later.

Hereinafter, the function and structure of the blower tube 130 will be described in detail with reference to FIGS. 1 and 6 to 8.

6 to 8 are views illustrating various examples of the blower tube illustrated in FIG. 1.

Referring to FIG. 1, the blower tube 130 is connected to the blower 120 to connect the air discharged to the outside, the inlet 131 and the lower plate 12 connected to the air introduced through the inlet 131. It may be provided with a discharge port 131 ′ for discharging to the space and pipes 132 and 133 embedded in the basement to form an air flow path between the inlet 131 and the discharge port 131 ′.

Inlet 131 may be connected to the blower 120 for discharging air to the outside. For example, when the blower 120 is configured as shown in FIGS. 4 and 5, the inlet 131 may be connected to the second blower fan 122 to introduce air discharged to the outside.

The outlet 131 ′ may be connected to the container lower plate 12 to discharge air introduced through the inlet 131 into the inner space. In other words, the air in the interior space of the container 10 discharged to the outside through the blower 120 may be circulated by being discharged back into the interior space of the container 10 via the inlet 131 and the outlet 131 ′.

Air introduced through the inlet 131 may move along the pipes 132 and 133. In this case, the pipes 132 and 133 may form an air flow path between the inlet 131 and the ground 200, and form an air flow path between the ground 200 and the outlet 131 ′. It may include an underground pipe 133.

That is, the air introduced through the inlet 131 moves along the ground pipe 132 and passes through the underground pipe 133 disposed in the basement, whereby the temperature of the air may be lowered.

The underground pipe 133 may be formed in any shape. However, in order to lower the temperature of the air underground pipe 133 may be formed so that the air flow path is long.

More specifically, the underground pipe 133 may be formed in a curved shape in which a plurality of bent portions 133 ′ are alternately arranged vertically or horizontally with the ground 200.

In an example, the underground pipe 133 may be formed in a curved shape by alternately arranging a plurality of curved portions 133 ′ arranged vertically up and down, as illustrated in FIGS. 6 and 7. In other words, the underground pipe 133 may include a plurality of bent portions 133 ′ that are alternately arranged perpendicularly to the ground 200.

As illustrated in FIG. 6, the curved portion 133 ′ may be formed in an arc shape having a constant curvature, and may be formed in a V shape as illustrated in FIG. 7.

In another example, as shown in FIG. 8, the underground pipe 133 may be formed in a curved shape in which a plurality of horizontally curved portions 133 ′ are alternately arranged left and right. In other words, the underground pipe 133 may include a plurality of curved portions 133 ′ alternately arranged horizontally with the ground 200.

In addition to the shape shown in Figures 6 to 8, the underground pipe 133 may be formed in various forms to lengthen the air flow path.

Although not shown in the drawing, in order to cool the air more efficiently, one or more cooling fins may be formed on the surface of the underground pipe 133.

The cooling fin is a fin-shaped metal plate attached to the underground pipe 133 to widen the heat transmission area of the underground pipe 133 and may be formed to be corrugated on the surface of the underground pipe 133.

The cooling fins may have a horizontal or longitudinal shape and may be formed in various structures such as helical fins, circular fins, spiral fins, square fins, and the like.

On the other hand, the container 1 for the power conversion device is provided in the lower plate 12 of the container and an auxiliary blower (not shown) for accelerating the air introduced through the discharge port 131 'through the plurality of blow holes to discharge to the internal space It may further include. In other words, the auxiliary blower may be provided at the outlet 131 ′ to accelerate the air discharged to the outlet 131 ′ through the underground pipe and enter the internal space.

The auxiliary blower may have the same structure as the blower 120 described above. Accordingly, when the lower plate 12 is formed of an inner wall adjacent to the inner space and an outer wall adjacent to the ground 200, any one blower fan included in the auxiliary blower is provided on the outer wall and discharged through the outlet 131 ′. Air can be introduced into the housing. In addition, the other blower fan included in the auxiliary blower may be provided on the inner wall to discharge the air inside the housing into the inner space.

Since the function of the auxiliary blower is the same as that of the blower 120 described with reference to FIGS. 1, 4 and 5, detailed descriptions thereof will be omitted.

As described above, the present invention passes the air discharged to the outside through the blown tube 130 buried underground, and then flows back into the interior space of the container 10, thereby increasing the temperature of the air inside the container 10 as the air is circulated. Can be lowered.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by.

Claims (11)

In the container for the power storage device is installed on the ground, the upper plate, the lower plate and the side wall are combined to form an internal space,
A power conversion system (PCS) provided in the internal space and converting electrical characteristics of power provided from an external device;
A blower provided on the side wall and having a first blowing fan for introducing air in the internal space and a second blowing fan for accelerating and discharging the air introduced through the first blowing fan to the outside; And
An inlet port connected to the blower to inject the air discharged to the outside; an outlet port connected to the lower plate to discharge air introduced through the inlet port into the internal space; A blower pipe having a pipe forming an air flow path;
Container for power converters.
The method of claim 1,
A first solar panel provided on an outer surface of the upper plate,
And a second solar panel hinged to an outer surface of the upper plate to rotate with respect to the upper plate.
The method of claim 1,
The side wall includes an inner wall adjacent to the inner space and an outer wall adjacent to the outside,
The first blower fan is provided on the inner wall, the second blower fan is provided on the outer wall container for a power converter.
The method of claim 1,
The first blowing fan and the second blowing fan each comprises a plurality of first blowing blades and second blowing blades,
The space between the second blower blades is narrower than the space between the first blower blades container for a power converter.
The method of claim 1,
The first blowing fan and the second blowing fan each comprises a plurality of first blowing blades and second blowing blades,
The number of the second blower blades is a container for a power conversion device more than the number of the first blower blades.
The method of claim 1,
The blower
And a secondary blower fan disposed between the first blower fan and the second blower fan to accelerate the air introduced through the first blower fan and provide it to the second blower fan.
The method of claim 6,
The first blowing fan, the second blowing fan and the auxiliary blowing fan each include a plurality of first blowing blades, second blowing blades and third blowing blades,
The number of the third blowing blades is greater than the number of the first blowing blades, the container for the power conversion device less than the number of the second blowing blades.
The method of claim 1,
And an auxiliary blower provided on the lower plate and configured to discharge air introduced through the discharge port through a plurality of blow holes and discharge the air into the inner space.
The method of claim 1,
The piping
And a ground pipe forming an air flow path between the inlet and the ground, and an underground pipe forming an air flow path between the ground and the outlet.
The method of claim 9,
The underground pipe is
And a plurality of bent portions alternately arranged vertically or horizontally with the ground to form a curved shape.
The method of claim 9,
At least one cooling fin (cooling fin) is formed on the surface of the underground pipe container for a power converter.

Images