KR20180051038A - Power Conversion Device - Google Patents

Abstract

According to an embodiment of the present invention, a power conversion device comprises: a housing forming a body and having a space therein; a power conversion component arranged in an inner space of the housing, and converting applied power; an accommodation part protruding from a rear surface of the housing, and accommodating a reactor therein; a heat radiation part protruding from the rear surface of the housing, and discharging heat generated from the power conversion part to the outside; an upper fixing part fixed to at least one of the accommodation part and the heat radiation part, and supporting an upper portion of the housing; and a lower fixing part selectively coupled to a lower support part protruding from the rear surface of the housing, and supporting a lower portion of the housing. According to the present invention, it is possible to prevent safety-related accidents which may occur in the installation process of the power conversion device by fixing a lower portion of the power conversion device while an upper portion of the power conversion device is supported. In addition, the upper and lower parts of the power conversion device can be stably fixed, and assembly convenience of the product can be increased.

Description

Power Conversion Device

The present invention relates to a power conversion apparatus.

The energy storage system stores the electric power generated from a power plant and supplied to the electric power system or the electric power generated from renewable energy such as solar, wind, and water power into a storage system including a battery or the like, It is a system that improves the energy efficiency by using it selectively and efficiently.

Using energy storage systems can equalize electrical loads with large time and seasonal variations. This can improve the overall load factor. In addition, the power generation cost can be lowered. In addition, it is possible to reduce the investment cost and operating cost required for the expansion of electric power facilities. In addition, it can lower the electricity bill and save energy.

These energy storage systems are installed in connection with power systems, generators, transmission and distribution, and customers, and are equipped with frequency regulation, generator output stabilization using peak energy, peak shaving, load leveling, And emergency power supply.

Energy storage systems are divided into physical energy storage and chemical energy storage depending on the storage method. Physical energy storage includes pumped storage, compressed air storage, and flywheel. Chemical storage includes lithium ion batteries, lead acid batteries, and Nas batteries.

Thus, the energy storage system discharges the charged electric power to supply electric power when necessary. This allows the energy storage system to supply power flexibly.

The energy storage system includes a battery module that can store electric energy, and a battery module that converts electric energy supplied from the outside into electric energy suitable for charging to be charged in the battery module, And may include a power conversion device capable of converting the electric energy into a required electric energy.

The power conversion apparatus can convert electrical energy in the form of direct current (DC) power generated by absorbing light from the sun into electric energy in the form of alternating current (AC) power required by the customer. Then, the electric energy stored in the battery module can be converted into electric energy of AC (alternating current) or DC (direct current) power type demanded by the customer.

That is, the power conversion apparatus can perform a function of converting the characteristics of electric energy required by each customer.

On the other hand, the power to be handled by the power conversion apparatus has a somewhat high power, which may be vulnerable to flooding, safety accidents, and the like. Therefore, it is preferable that the power conversion apparatus is installed at a predetermined height from the floor.

However, the power conversion device is formed as a housing that accommodates a plurality of power conversion parts, and is required to have a means for stably fixing the power conversion device at a constant height by being manufactured with a rather heavy load.

For example, Korean Patent Laid-Open Publication No. 10-2013-0047392, "inverter stack" is disclosed.

According to the above-described prior art, since a separate bracket is fixed to the case and the wall surface of the installation wall by fastening members in order to fix the power conversion device to the installation wall, users feel inconvenience in installing a power conversion device with a relatively heavy load .

Korean Patent Publication No. 10-2013-0047392, "inverter stack"

INDUSTRIAL APPLICABILITY The present invention can provide a power conversion apparatus in which the body of the power conversion apparatus is stably fixed and the assembling convenience of the user is increased.

The power conversion device according to the present invention may include a housing having a space therein.

In addition, a power conversion component for converting applied power can be accommodated in the inner space of the housing.

In addition, the housing may include a receiving portion for accommodating a reactor electrically connected to the power converting component, and a heat radiating portion for radiating heat generated from the power converting component to the outside.

In addition, the accommodating portion and the heat dissipating portion may be integrally formed with the housing by protruding at least a part from the back surface of the housing.

Further, it may include an upper fixing part fixed to at least one of the receiving part and the heat radiating part and supporting the upper part of the housing.

The apparatus may further include an upper bracket for fixing the upper fixing part to a wall or a fixing structure.

The upper fixing part may be fitted in the upper bracket to support the upper part of the housing.

The apparatus may further include a lower support portion protruding from a rear surface of the housing, and a lower fixing portion selectively supporting the lower portion of the housing to support the lower portion of the housing.

The lower supporting part may include a fixing protrusion for selectively engaging with the lower fixing part.

Further, the lower supporting part and the lower fixing part may be integrally formed with each other or may be coupled by a fastening member.

According to the present invention, by fixing the lower portion of the power conversion apparatus in a state of supporting the upper portion of the power conversion apparatus, it is possible to prevent a safety accident that may occur in the installation process of the power conversion apparatus.

According to the present invention, the upper and lower portions of the power conversion device can be stably fixed, and the assembling convenience of the product can be increased.

1 is a front perspective view of a power conversion apparatus according to the present embodiment.
2 is a rear perspective view of the power conversion apparatus according to the present embodiment.
3 is an exploded perspective view of the power conversion apparatus according to the embodiment.
4 is a cross-sectional view of the AA portion of the power conversion device according to the embodiment.
5 is a view schematically showing a rear surface of a rear case according to the present invention.
6 is a view showing a state in which a part of the cover is removed from the rear case of Fig. 5;
7 is a side view of the power conversion device according to the present embodiment.
8 is a view showing an upper bracket for supporting the upper fixing part according to the present embodiment.
9 is a view showing a combination of a lower fixing part and a lower supporting part according to an embodiment of the present invention.
10 is a partial cross-sectional view showing the main part of FIG.

Hereinafter, embodiments related to the present invention will be described in detail with reference to the drawings. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

Those skilled in the art, who understands the spirit of the present invention, can easily implement other embodiments included in the scope of the same concept by adding, changing, deleting, and adding components. However, this also falls within the scope of the present invention.

It is to be understood that, although the present invention may be embodied in many different forms and should not be construed as being limited to the exemplary embodiments set forth herein, It can be expressed.

FIG. 1 is a front perspective view of the power conversion apparatus according to the present embodiment, FIG. 2 is a rear perspective view of the power conversion apparatus according to the present embodiment, and FIG. 3 is an exploded perspective view of the power conversion apparatus according to this embodiment.

1 to 3, the power conversion apparatus 1 according to the present embodiment may include a housing 10 forming a body.

An internal space may be formed in the housing 10. The circuit board 51, the power conversion element 52, and the like constituting the power conversion apparatus 1 may be disposed in the internal space.

The housing 10 may be provided in multiple cases so as to be detachable.

In detail, the housing 10 may include a front case 11 forming a front surface and a rear case 12 forming a rear surface. The housing 10 may be formed by coupling the front case 11 and the rear case 12 to each other. For example, the front case 11 and the rear case 12 may be formed as polygons having openings facing each other so as to be fitted to each other.

One of the front case 11 and the rear case 12 may be provided to be larger than the other case. For example, a part of the front case 11 may cover a part of the rear case 12 and be coupled to each other.

A display unit 111 may be provided on the front surface of the housing 10, that is, the front case 11 to indicate the operating state of the power conversion apparatus 1. [

In detail, the front case 11 may be provided with a display installation hole 112 in which the display unit 111 can be installed. The display unit 111 may be fixed to the display mounting hole 112 by a fastening member.

The display unit 111 may indicate the operating state of the power conversion apparatus 1 to the outside. Also, the display unit 111 can receive an operation signal from the outside.

The rear surface of the housing 10, that is, the rear case 12 may include a receiving portion 20 capable of receiving power components and a receiving portion cover 21 covering the receiving portion 20 .

In detail, the receiving portion 20 may be formed protruding from the rear case 12. The protruding inside of the accommodating portion 20 protruding from the rear case 12 can be opened. At this time, an accommodating space in which the electronic parts can be accommodated may be formed in the accommodating part 20. That is, the receiving portion 20 may be integrally formed with the rear case 12. [ The opened surface of the accommodating portion 20 may be shielded by the accommodating portion cover 21. The receiving cover 21 may further include a receiving portion cover radiating fin 211 for easily discharging heat generated in the receiving portion 20 to the outside.

The rear case 12 may include a heat dissipation unit 30 for transmitting heat generated in the inner space of the housing 10 to the outside. The heat dissipating unit 30 may protrude from the rear case 12. The heat dissipation units 30 may be spaced apart from each other in the rear case 12 and may be provided with a plurality of heat dissipation units 30. [

The heat dissipation unit 30 may receive heat from the power conversion device 52 disposed inside the housing 10 and discharge the heat to the outside. That is, the heat dissipation unit 30 may be in contact with the power conversion device 52 to transmit heat generated from the power conversion device 52 to the outside more quickly.

In other words, the power conversion element 52 is at least partly in contact with the rear case 12, and the heat dissipation unit 30 is disposed on the rear surface of the rear case 12, Can be provided.

The housing 10 may be fixed to a wall, a fixing member, or the like. In detail, the rear case 12 may be provided with a fixing part 40 for fixing the rear case 12 to a wall, a fixing member, or the like.

The fixing portion 40 may include an upper fixing portion 41 and a lower fixing portion 42. The upper fixing part 41 may be disposed above the middle part of the housing 10. The upper fixing part 41 may be disposed on the heat dissipating part 30 and the accommodating part 20. That is, the upper fixing part 41 may be disposed on the heat dissipating part 30 and the accommodating part 20. The upper fixing part 41 is fixed to a wall, a supporting member, and the like, and can support the upper part of the housing 10.

The lower fixing part 42 may be disposed below the middle part of the housing 10. The lower fixing part 42 may be spaced apart from the housing 10 by a predetermined distance. The lower fixing part 42 may be connected to the lower supporting part 60 extending from the rear case 12. That is, the lower fixing part 42 is fixed to a wall, a supporting member, or the like, and can support the upper part of the housing 10.

The lower support portion 60 may support the lower fixing portion 42. The lower support part 60 may protrude rearward from the rear surface of the rear case 12. [ The lower support portions 60 may be provided in a plurality of positions and the lower support portions 60 may be disposed below the housing 10 so as to be spaced from each other in both directions.

The lower support portion 60 may form a space through which the external air can flow through the rear surface of the rear case 12 by separating the lower fixing portion 42 and the rear case 12 from each other.

4 is a cross-sectional view taken along the line A-A of the power conversion device according to the present embodiment.

Referring to FIG. 4, a power conversion part 50 including a circuit board 51, a power conversion element 52, and the like may be disposed in the inner space of the housing 10.

The power conversion part 50 is a core device constituting the power conversion device 1 and can perform a function of converting power applied from the outside into power required by a consuming place. For example, the power conversion part 50 converts the DC power generated from the solar power generation module into AC power and supplies the AC power to the consumer. Therefore, the power conversion apparatus 1 may be referred to as an inverter or a converter.

The power conversion component 50 may include a first power conversion component 50A and a second power conversion component 50B. The first power conversion component 50A may be referred to as a power conversion component disposed inside the housing 10. The second power conversion component 50B may be referred to as a power conversion component disposed inside the accommodating portion 20. [ The first power conversion component 50A and the second power conversion component 50B may be electrically connected to each other to perform a function.

The first power conversion part 50A may include the circuit board 51 and the power conversion element 52. [

 The circuit board 51 may be provided as a printed circuit board. A plurality of elements may be mounted on the circuit board 51. The power conversion element 52 may be connected to the circuit board 51.

The power conversion device 52 may be referred to as a switching device including a thyristor, a gate turn off (GTO), a power transistor, an insulated gate bipolar transistor (IGBT), and the like. The power conversion elements 52 may be provided in the housing 10 in a plurality of ways. In the present embodiment, the power conversion element 52 is an IGBT. The power conversion device 52 may be provided in a plurality of ways, and the power conversion device 52 may be referred to as a first power conversion device, a second power conversion device, or a third power conversion device.

The power conversion part 50 may be fixed to the inside of the housing 10. For example, the circuit board 51 may be fixed to the inner side of the housing 10 by fastening members. In this embodiment, the circuit board 51 may be fixed to the rear case 12 of the housing 10 by fastening members.

The power conversion element 52 connected to the circuit board 51 may be in contact with one surface of the rear case 12. [ The heat generated from the power conversion element 52 may be transmitted to the outside through one surface of the rear case 12. [ At this time, a plurality of radiating fins are provided behind the rear case 12 so that heat can be released more quickly.

A reactor 53 may be included in the second power conversion component 50B.

The reactor (53) may be fixed to one side of the inside of the accommodating portion (20). The reactor 53 may emit relatively hot heat. Therefore, in order to minimize the heat generated in the reactor 53 from being transmitted to the rear case 12, the reactor 53 may be disposed at one side in the direction away from the rear case 12 have. The reactor 53 may be disposed on one side in the direction adjacent to the rear case 12. [

The receiving portion 20 may include a heat insulating material 26 for preventing the heat generated from the reactor 53 from being transmitted to the rear case 12. The heat insulating material 26 may be provided on the bottom surface of the accommodating portion 20. At this time, the bottom surface of the receiving portion 20 may refer to the rear surface of the rear case 12 in the accommodating space of the accommodating portion 20. In other words, the heat insulating material 26 is disposed between the reactor 53 and the rear case 12, and can be accommodated in the receiving portion 20. That is, the heat generated in the reactor 53 by the heat insulating material 26 can be minimally transferred to the rear case 12.

In addition, the accommodating portion 20 may be provided with a thermal grease, which is generated by the reactor 53, to be easily discharged to the outside. The thermal grease 25 may be filled in the inner space of the accommodating portion 20. The thermal grease 25 may be provided to form a heat insulating space S in at least a part of the inner space of the accommodating portion 20. [ Heat generated in the reactor 53 by the thermal grease 25 can be easily transferred to the outside of the accommodating portion 20.

As a result, the accommodating portion 20 can easily release heat to the outside by the thermal grease 25. The heat generated in the reactor (53) by the heat insulating material (26) and the heat insulating space (S) can be minimized to the rear case (12).

FIG. 5 is a schematic view illustrating a rear surface of a rear case according to the present invention, and FIG. 6 is a view illustrating a state in which a cover is partially removed from the rear case of FIG.

5 and 6, a heat dissipating unit 30 for discharging heat generated from the power conversion component 50 disposed inside the housing 10 to the outside is provided on the rear surface of the rear case 12 .

The heat dissipation unit 30 may include a first heat dissipation unit 31, a second heat dissipation unit 32, and a third heat dissipation unit 33. The first heat dissipation unit 31, the second heat dissipation unit 32 and the third heat dissipation unit 33 may be spaced apart from each other on the rear surface of the rear case 12. The heat dissipation unit 30 may be provided at a position corresponding to the power conversion device 52 disposed inside the housing 10.

The first heat radiating part 31 may be provided on the left rear surface of the rear case 12 with reference to the drawing. Alternatively, the first heat radiating portion 31 may be disposed on the left side of the accommodating portion 20 with reference to the drawing.

The first heat dissipation unit 31 may receive heat from the power conversion device 52 housed in the housing 10 and discharge the heat to the outside. At this time, the first heat dissipating unit 31 can dissipate the heat received from the first power converting device among the power converting devices 52 through natural convection.

The first heat radiating part 31 may include a first radiating fin 311 and a first radiating fin 312. The first radiating fins 311 may be disposed above the first radiating fins 312. The first radiating fins 311 may be spaced apart from the first radiating fins 312 by a predetermined distance in the vertical direction.

A space is formed between the first radiating fins 311 and the first radiating fins 312 so that the first radiating fins 311 and the first radiating fins 312 are spaced from each other Heat can be released from the state to the outside space.

The second heat radiating part 32 may be provided on the right rear surface of the rear case 12 with reference to the drawing. Alternatively, the second heat-radiating portion 32 may be disposed on the right side of the accommodating portion 20 with reference to the drawing.

The second heat dissipation unit 32 may receive heat from the power conversion device 52 accommodated in the housing 10 and discharge the heat to the outside. At this time, the second heat dissipating unit 32 can dissipate the heat transferred from the second power converting element of the power converting element 52 through natural convection.

The second heat dissipating unit 32 may include a third heat dissipating fin 321 and a fourth heat dissipating fin 322. The third radiating fin 321 may be disposed above the fourth radiating fin 322. The third radiating fins 321 may be spaced apart from the fourth radiating fins 322 by a predetermined distance in the vertical direction.

The third heat radiating part 33 may be disposed between the accommodating part 20 and the second heat radiating part 32 with reference to the drawing. Alternatively, the third heat dissipation unit 33 may be disposed between the first heat dissipation unit 31 and the second heat dissipation unit 32. However, in the present embodiment, the third heat radiating part 33 is disposed between the second heat radiating part 32 and the accommodating part 20.

The third heat radiating part 33 may be provided so as to surround a part of the accommodating part 20. The third heat radiating part 33 may extend in a direction from the lower part of the rear case 12 to the upper part. One end of the third heat dissipation unit 33 may be curved in a direction toward a side surface of the rear case 12. [ For example, the third heat dissipation part 33 may be formed in an " a " shape.

The third radiating part 33 may include a left radiating fin 331, a right radiating fin 332, and an internal radiating fin 333. The third heat radiating part 33 may further include a heat radiating part cover 34 covering the left radiating fin 331, the right radiating fin 332 and the internal radiating fin 333. That is, the third heat radiating part 33 may be formed in a duct shape having one end and the other end opened.

In detail, the left radiating fin 331 may form one side of the third radiating part 33. The right radiating fin 332 may form the other side of the third radiating portion 33. The heat radiating portion cover 34 covers the left radiating fin 331 and the right radiating fin 332 to form a space inside the third radiating portion 33. At this time, the inner radiating fin 333 may be disposed in the inner space of the third radiating part 33.

A cooling fan 35 may be disposed at a lower end of the third heat dissipation unit 33. The cooling fan 35 may be disposed at the end of the third heat dissipating unit 33 to form forced convection in the direction toward the internal heat dissipating fin 333.

The cooling fan 35 disposed below the rear case 12 relatively moves the cooling fan 35 in the direction toward the upper side of the rear case 12. In this case, Convection can be formed. With this structure, the cooling efficiency of the third heat dissipation part 33 can be improved by cooling the internal heat dissipation fin 333 with air having a relatively low temperature.

The third heat dissipation unit 33 is formed to extend from the lower part of the rear case 12 toward the upper part of the rear case 12 so that a part of the third heat dissipation part 33 is curved laterally of the rear case 12, It is possible to prevent water droplets or the like, which may flow into the inside of the fan unit 33, from being directly infiltrated into the cooling fan 35.

As a result, the first heat dissipation part 31, the second heat dissipation part 32 and the third heat dissipation part 33 are generated in the first power conversion part 50A disposed inside the housing 10 Heat can be released to the outside. The first heat dissipation unit 31 and the second heat dissipation unit 32 can perform heat dissipation by natural convection. In addition, the third heat dissipating unit 33 can perform heat dissipation by forced convection through the cooling fan 35.

Therefore, the power conversion element 52 having a relatively high temperature among the first power conversion component 50A can be disposed adjacent to the third radiating fin 321 to emit heat. The power conversion element 52 having a relatively low temperature among the power conversion elements 52 may be arranged adjacent to the first and second heat dissipation parts 31 and 32 to emit heat have.

Meanwhile, the bottom surface of the rear case 12 may further include a wire hole 122 through which electric wires, cables, and the like capable of supplying external power may pass through the power conversion part 50. In addition, the electric wire holes 122 may be provided on the bottom surface of the rear case 12 in a plurality of spaces. The bottom surface of the front case 11 may extend downward from the bottom surface of the rear case 12 so that water droplets do not penetrate into the electric wire holes 122.

FIG. 7 is a side view of the power conversion apparatus according to the present embodiment, and FIG. 8 is a view showing an upper bracket supporting the upper fixing unit according to the present embodiment.

Referring to Fig. 7, the power conversion apparatus 1 according to the present embodiment can be fixed to a fixed structure such as a wall W.

In detail, the rear case 12 of the housing 10 may be disposed in a direction toward the wall W. [ The rear case 12 may be provided with an upper fixing part 41 and a lower fixing part 42 for fixing the housing 10 to the wall W. [ Further, a center fixing portion provided at the central portion of the rear case 12 besides the upper fixing portion 41 and the lower fixing portion 42 may be further provided. It is not limited to this idea.

The upper fixing part 41 may be fixed on the receiving part 20 and the receiving part cover 21 provided on the rear case 12 and on the heat radiating part 30. That is, the upper fixing part 41 may be disposed above the center of the rear case 12.

The upper fixing part 41 may be disposed across the plurality of heat dissipating parts 30. [ The upper fixing part 41 may be fixedly coupled to at least one of the heat dissipating part 30 and the receiving part cover 21. Alternatively, the upper fixing part 41 may be fixed to an upper supporting part (not shown) formed separately from the rear case 12. At this time, the upper support portion (not shown) protruding from the rear case 12 may be formed to be similar to the lower support portion 60.

The lower fixing part 42 may be provided on the lower supporting part 60 protruding from the rear case 12. The lower fixing part 42 may be coupled to the wall W by a fastening member. The lower fixing part 42 may be detachably attached to the lower supporting part 60.

In detail, the lower support portion 60 may protrude from the rear case 12. The lower support part 60 may protrude from the rear case 12 in a vertical direction. At this time, the lower support part 60 may be disposed in a direction perpendicular to the wall W. The lower fixing part 42 may be mounted on one side of the lower supporting part 60 arranged in a direction perpendicular to the wall W. [

The lower fixing part 42 may be disposed in a direction parallel to the wall W. The lower fixing part 42 may be in contact with the wall W. [ That is, the lower fixing part 42 is in contact with the wall W in a direction parallel to the wall W, so that the lower part of the rear case 12 can be stably supported.

The rear case 12 fixed to the wall W by the upper fixing part 41 and the lower fixing part 42 may be spaced apart from the wall W. [ That is, a space through which air can flow may be formed between the wall W and the rear case 12. [

The space can be understood as a region where the heat dissipation unit 30 and the air are heat-exchanged. The space can be understood as an air-insulating space for shielding heat radiated from the rear case 12 toward the wall W.

Referring to FIG. 8, an upper bracket 70 for fixing the upper fixing part 41 may be installed on the wall W. Referring to FIG. The upper bracket 70 can support the upper fixing part 41. The upper bracket 70 may be fixed to the wall W by fastening members.

In detail, the upper bracket 70 may include a bracket body 701 and the bracket locking portion 702.

The bracket body 701 may be fixed to the wall W by a fastening member. The bracket body 701 may be provided with a fastening member through-hole 703 through which the fastening member can pass. The bracket body 701 may be formed in at least a plate shape.

The bracket engaging portion 702 may be formed by bending a part of the bracket body 701. A portion of the bracket engaging portion 702, which is bent at one portion, may be formed to extend. That is, the bracket engaging portions 702 may be spaced apart from the wall W at regular intervals. The upper fixing part 41 may be fixedly caught in a space spaced apart from the wall W by a predetermined distance.

Meanwhile, in the present embodiment, the upper fixing part 41 may be provided in the same configuration and the same configuration as the upper bracket 70. Therefore, the upper fixing part 41 may include the fixing part 411 and the fixing part 412. [

The fixing body 411 may be fixed to at least one of the heat radiating portion 30, the accommodating portion 20, and the accommodating portion cover 21. The fixing part 412 of the upper fixing part 41 and the bracket locking part 702 of the upper bracket 70 may be engaged with each other. To this end, the fixed engaging portion 412 and the bracket engaging portion 702 may be disposed such that a part thereof faces each other.

FIG. 9 is a view showing a combination of a lower fixing part and a lower supporting part according to an embodiment of the present invention, and FIG. 10 is a partial sectional view showing a main part of FIG.

Referring to FIG. 9, the lower fixing part 42 according to an embodiment of the present invention may be fixed to the lower supporting part 60 by fitting.

The lower support part 60 may be provided with a fixing protrusion 65 to which the lower fixing part 42 can be fixed. The fixing protrusion 65 may be disposed below the lower support portion 60. The fixing protrusion 65 may protrude downward from the lower supporting portion 60.

The fixing protrusion 65 may include an extended portion 66 protruding downward from the lower supporting portion 60 and a bent portion 67 engaged with the lower fixing portion 42. The bent portion 67 may be formed by bending one end of the extended portion 66. The bent portion 67 may be bent in a direction perpendicular to the extending portion 66. That is, when the bent portion 67 is viewed from the side of the fixing protrusion 65, the fixing protrusion 65 may be formed in a "C" shape.

The lower fixing part 42 includes a lower bracket 421 fixed to the wall W and a first reinforcing rib 422 and a second reinforcing rib 423 for preventing the lower bracket 421 from being deformed. . ≪ / RTI >

The lower bracket 421 may be fixed to the wall W by fastening members. The lower bracket 421 may be fixed to the wall W to support the load of the housing 10. The lower bracket 421 may be provided with a fastening member through-hole 425 through which the fastening member can pass.

The first reinforcing rib 422 may be formed by bending one end of the lower bracket 421. The first reinforcing ribs 422 may be provided as a plate bent at an upper end of the lower bracket 421. For example, the first reinforcing rib 422 is formed by bending the upper end of the lower bracket 421, and may have a cross-sectional shape when viewed from the side.

The first reinforcing rib 422 may be provided with a fitting hole 424 for engaging with the fixing protrusion 65 of the lower supporting part 60. The coupling hole 424 may be formed to correspond to the fixing protrusion 65.

The second reinforcing rib 423 may be formed by bending the other end of the lower bracket 421. A portion of the second reinforcing ribs 423 may be connected to the first reinforcing ribs 422. The second reinforcing ribs 423 may be provided as plates that are bent at both side ends of the lower bracket 421. The second reinforcing ribs 423 may be provided on the lower bracket 421 in a plurality of ways. For example, the second reinforcing ribs 423 may be formed by bending both side ends of the lower bracket 421.

That is, the lower bracket 421 can be prevented from being deformed in the horizontal and vertical directions by the first reinforcing ribs 422 and the second reinforcing ribs 423.

Referring to FIG. 10, the lower fixing part 42 and the lower supporting part 60 may be fitted to each other.

In detail, the fixing protrusion 65 may be inserted into the fitting hole 424. The coupling hole 424 and the bent portion 67 of the fixing protrusion 65 may be formed in a corresponding shape. Alternatively, the engaging hole 424 may be formed so that a portion of the bent portion 67 can be inserted, and is not limited to this.

When the bent portion 67 is inserted into the coupling hole 424, the lower fixing portion 42 can be moved toward the lower supporting portion 60. That is, the coupling hole 424 can be moved in a direction toward the extension portion 66. At this time, the lower fixing part 42 and the lower supporting part 60 may be in contact with each other.

The lower fixing portion 42 can be moved in a direction toward the wall W in a state in which the coupling hole 424 is disposed on the extension portion 66. [ At this time, the extension part 66 can move in a direction from one side of the coupling hole 424 toward the other side.

When the extension portion 66 is positioned on the other side of the engagement hole 424, the bent portion 67 moves in a direction away from the engagement hole 424 and is disposed on the first reinforcement rib 422 . At this time, one surface of the bending portion 67 and one surface of the first reinforcing ribs 422 may contact each other.

That is, the bent portion 67 of the fixing protrusion 65 is in contact with the first reinforcing rib 422 of the lower fixing portion 42, and the bent portion 67 is separated from the fitting hole 424 So that the lower supporting part 60 and the lower fixing part 42 can be fixed.

The lower fixing part 42 is fixed to the lower supporting part 60 and can be coupled to the wall W by a fastening member to support the load of the housing 10. [

Meanwhile, the lower fixing part 42 and the lower supporting part 60 may be coupled to each other by a fastening member. The lower fixing part 42 may protrude from the lower supporting part 60 and may be integrally formed. The lower fixing part 42 may be provided in a plurality of the lower supporting parts 60, respectively. It is not limited to this idea.

1 power converter 10 housing
11 Front case 12 Rear case
20 receptacle 21 receptacle cover
30 Heat radiating part 41 Upper fixing part
42 Lower fixing part 50 Power conversion part
60 lower support 70 upper bracket

Claims (15)

A housing defining a body and having a space therein;
A power conversion component disposed in an inner space of the housing and converting power to be applied;
A housing protruding from a rear surface of the housing and containing a reactor therein;
A heat dissipating unit protruding from a back surface of the housing and discharging heat generated from the power converting component to the outside;
An upper fixing part fixed to at least one of the receiving part and the heat radiating part and supporting the upper part of the housing; And
And a lower fixing part which is selectively coupled to a lower supporting part protruding from a back surface of the housing and supports the lower part of the housing. The method according to claim 1,
And the lower support portion includes a fixing protrusion capable of being fitted to the lower fixing portion. 3. The method of claim 2,
In the fixing projection,
An extension part protruding from the lower support part and penetrating a part of the lower fixing part; And
And a bending portion formed at a portion of the extension portion so as to be bent and including at least one surface contacting the lower fixing portion. 3. The method of claim 2,
In the lower fixing portion,
A lower bracket fixed to the wall or fixing structure by the fastening member;
A first reinforcing rib formed by bending one end of the lower bracket to reinforce the strength of the lower bracket; And
And a second reinforcing rib that is bent at the other end of the lower bracket and connected to the first reinforcing rib and the lower bracket. 5. The method of claim 4,
Wherein the through hole is provided in the first reinforcing rib and through which the fixing protrusion can pass. 6. The method of claim 5,
The lower fixing portion moves in a direction toward the lower supporting portion in a state where the through hole is arranged on the fixing projection,
And further moves in a direction parallel to the lower support portion such that at least one side of the bent portion and the lower fixed portion are in contact with each other. The method according to claim 1,
Wherein the lower support portion and the lower fixing portion are integrally formed or coupled to each other by a fastening member. The method according to claim 1,
And an upper bracket for securing the upper fixing part to a wall or a fixing structure. 9. The method of claim 8,
In the upper bracket,
A bracket body fixed to the wall or stationary structure by a fastening member; And
And a bracket engaging portion formed by bending a part of the bracket body. 10. The method of claim 9,
Wherein the upper fixing portion is coupled to the bracket locking portion to prevent the housing from falling forward. Front case defining front;
A rear case coupled to the front case and defining a rear surface;
An inner space formed by combining the front case and the rear case;
A power conversion component disposed in the inner space and disposed in a direction toward the rear case;
A heat dissipating unit protruding rearward from the rear case and discharging heat generated from the power converting component to the outside;
An upper fixing unit disposed on the heat dissipating unit and spaced apart from a rear surface of the rear case;
A lower support protruding rearward from the rear case and disposed below the heat dissipation unit; And
And a lower fixing part that is selectively connected to the lower support part and is disposed to be spaced apart from a rear surface of the rear case. 12. The method of claim 11,
And a receiving portion having a receiving space is provided between the rear case and the upper fixing portion. 12. The method of claim 11,
And the lower support portion includes a fixing protrusion which is fitted and fixed to the lower fixing portion. 12. The method of claim 11,
Wherein the lower supporting portion and the lower fixing portion are coupled to each other by a fastening member. 12. The method of claim 11,
Wherein the lower supporting portion and the lower fixing portion are integrally formed.

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