Electronic power converter

Abstract

The present invention relates to a modular electronic power converter having a first housing (10), a second housing (30), and a connecting element (32, 64), the connecting element (32, 64) being disposed between the housings (10, 30) and connectable to at least one of the housings (10, 30) via a locking connection.

Description

Technical Field

[0001] The present invention relates to an electronic power converter having a housing. A power converter is a power processing device that exchanges power with other electrical units via its connections and operates it by electronic means. In particular, power converters include inverters, DC voltage converters, frequency converters, battery converters, power supplies for AC or DC loads, and the like.

Background Art

[0002] DE102014105985 discloses an inverter having a plurality of converter modules, each converter module having its own housing. The converter modules can include various functions, in particular functions for converting power (for example, converting DC to DC, or DC to AC, or vice versa). The converter modules can be electrically connected via plug connectors and can thus be combined in various ways, such combinations always resulting in an electronic power converter.

[0003] WO2016 / 012541 describes housing an inverter, such as one used in a photovoltaic system for converting direct current into alternating current, in a housing that can be fixed to a wall by a wall bracket.

[0004] The size of the housing of a power converter basically depends on the rated power of the power converter. A typical power converter has a rated power of about 1 kilowatt to 1 megawatt and exchanges currents of several tens of amperes at voltages of several hundred volts. The connections of the power converter are dimensioned accordingly. Also, there are always high requirements for the electromagnetic compatibility and protection class of the power converter. In contrast, it is desirable for the weight and volume of the power converter or at least the converter modules of the power converter to be small, especially to enable assembly and, if necessary, repair.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The present invention addresses the problem of further simplifying the assembly of a power converter at the place of use.

Means for Solving the Problem

[0006] This problem is solved by a power converter having the configuration of claim 1. Preferred embodiments are described in the dependent claims.

[0007] The electronic power converter has a modular design and includes a first housing, a second housing, and a connecting element disposed between the housings. The connecting element is connectable to at least one of the housings via a snap connection. Such a power converter can be, for example, a power electronic inverter for a solar power generation system. The modular structure of the housing of the power converter enables different configurations of the power converter to be easily provided. This makes it possible to easily and efficiently adapt the power converter to the intended application (e.g., the type and use of the solar power generation system with which the power converter interacts). Here, various components of the power converter can be accommodated in different housings in different configurations, and the modular structure allows for proper and easy assembly and installation. The provided connecting element that can latch onto at least one housing can further enhance the versatility of the structure and simplify the assembly even more. In particular, the connecting element can be provided in various embodiments (e.g., with sealing and / or having a passage for, for example, a cable).

[0008] In one embodiment of the power converter, the housings each have a rear surface and a peripheral frame. The frames of the first and / or second housings have at least one slot in the first frame surface and / or the second frame surface. Preferably, the slot extends transversely to the long side of the frame surface (i.e., transversely to the perimeter of the frame). The slot is configured to latch with a connecting element to enable a secure detent connection. In an embodiment, the first and / or second frame surface comprises one or more additional slots to enable a more secure latching with the connecting element. In yet another embodiment, both the first and second frame surfaces comprise one or more slots. This can provide further expandability of the power converter. In particular, it is advantageous if the first and second frame surfaces face each other. In one embodiment, the first and / or second frame surface has, in addition to one or more slots, further through recesses through which connections (e.g., in the form of electrical cables) can extend between the two housings.

[0009] In one embodiment, the connecting element is plate-shaped and has a base plate with at least one through recess, and the connecting element is preferably arranged planar between the first housing and the second housing. Preferably, the connecting element is elongate in this case, in particular having a ratio equivalent to the cross-section of the first and / or second housing. The plate-shaped design of the connecting element enables a secure planar connection of the first and second housings. The through recess is suitable for accommodating connecting elements (in particular electrical connections) in order to connect components of the power converter accommodated in the first housing to components of the power converter accommodated in the second housing. The connecting element preferably has a plurality (in particular two) through recesses.

[0010] In one embodiment, the base plate has at least one first retaining protrusion, and the at least one first retaining protrusion extends laterally, particularly perpendicularly, to the base plate and has a first retaining lug. Preferably, the retaining protrusion extends parallel to the surface normal of the retaining protrusion and extends laterally (particularly perpendicularly) to the longitudinal direction of the base plate. The retaining protrusion is intended to be inserted into one of the slots of the housing and is preferably elongated. Next, the retaining protrusion can latch into the slot of the first or second housing via the retaining lug. Preferably, the retaining lug faces towards the edge of the base plate of the connecting element. In a further embodiment, the connecting element may have a further retaining protrusion with a further retaining lug.

[0011] In one embodiment, the connecting element has a second retaining protrusion with a second retaining lug on the side opposite to the first retaining protrusion of the base plate (particularly on a plane perpendicular to the base plate). Preferably, the second retaining protrusion with the second retaining lug is symmetric with respect to the first retaining protrusion and the first retaining lug. In such a case, the base surface of the base plate substantially becomes the symmetry plane of the first and second retaining protrusions.

[0012] In a further embodiment, the frame of the first housing and the frame of the second housing each comprise at least one slot. The slots of the housing are arranged such that the first retaining protrusion of the connecting element can latch into the slot of the first housing and the second retaining protrusion of the connecting element can latch into the slot of the second housing. Thus, the first and second housings are connected to each other by the connecting element in that the connecting element is arranged between the frames of the housings.

[0013] Preferably, the base plate of the connecting element is made of a solid material, particularly plastic. This enables further stabilization of the power converter.

[0014] In one embodiment, at least one through recess of the connecting element preferably has a peripheral protrusion disposed at the center of the through recess. Through the peripheral protrusion, for example, it is possible to lock an inlay or insert into the through recess. In particular, the connecting element has an elastic insert having a peripheral groove. The insert can be arranged in the through recess of the connecting element such that the peripheral protrusion engages the groove, especially with respect to moisture, air, and / or dust, so that the insert seals the through recess.

[0015] For example, the elastic insert has at least one recess formed as a folded recess or a through recess. The through recess is designed to function as a feed-through for the energizing line of the power converter. Thereby, in particular, by also having a through hole at a position corresponding to the through recess or insert of the connecting element in the state where the housing frame is assembled, the power converter can be formed in a modular manner and an electrical connection between the components housed in the housing can be established.

[0016] In one embodiment, the power converter comprises a wall bracket. The first housing and / or the second housing each have pegs on opposing third and fourth frame surfaces that are oriented substantially perpendicular to the first frame surface and / or the second frame surface. The wall bracket has a substantially U-shaped profile having a base surface attachable to a wall and two edge surfaces, each of the edge surfaces having a T-shaped recess. In the assembled state, the edge surfaces of the wall bracket are supported on the opposing third and fourth frame surfaces of the first or second housing such that the pegs engage one of the respective T-shaped recesses. Preferably, the T-shaped foot here functions to guide the peg at the start of the assembly process, while the end points of the T-shaped roof function as a receptacle in the assembled state.

[0017] In one embodiment, the T-shaped recess of the wall bracket having a T-shaped roof portion is substantially parallel to the base surface and extends parallel to the third and fourth frame surfaces. Thereby, the T-shaped roof portion functions as a receptacle for the peg in the assembled state. Preferably, the peg has a circular cross-section for this purpose.

[0018] In one embodiment, the first housing and / or the second housing have two elongated rear protrusions that extend parallel to each other in their longitudinal directions and parallel to the third and fourth frame surfaces, and the pegs are arranged on the surfaces of the rear protrusions facing each other. Thereby, the peg can be received in a T-shape inside, so that the appearance when viewed from the outside of the housing is not impaired.

[0019] In one embodiment, the edge surface of the wall bracket is formed as a V-shaped profile having a first leg portion and a second leg portion. The first leg portion of each edge surface is adjacent to the base surface, and the second leg portion of each edge surface is adjacent to the first leg portion. The V-shaped vertices face outward. In the assembled state, the rear protrusion lies flat on the outer surface of each second leg portion of the wall bracket. In one embodiment, the inner surface of the rear protrusion is inclined corresponding to the second leg portion of the wall bracket so that the rear protrusion can lie flat against the second leg portion in the assembled state. Preferably, the rear protrusion is on the outside of the wall bracket.

[0020] In one embodiment, the T-shaped recesses of the wall bracket face each other and are centered within the respective second leg portions of the edge surface. The foot points of the T-shaped recesses are either closed or open. Even when the foot points of the T-shaped recesses are closed, since the second leg portions of the wall bracket are inclined inward, the pegs of the housing can engage with the feet of the T-shaped recesses. The pegs are preferably arranged inside the rear protrusions. Therefore, the distance between the pegs is greater than the distance between the front edges of the second leg portions, and insertion is possible even when the T-shaped feet are closed.

[0021] To enhance stability, at least one of the housings can be further fixed to the wall bracket by a screw that can be screwed, for example, into the upper end of the second leg of the wall bracket.

[0022] In a preferred embodiment, the first housing is connected to the first wall bracket, the second housing is connected to the second wall bracket, and in the assembled state of the power converter, the pegs of the first housing are arranged at the respective lower end points of the roof portions of the T-shaped recesses of the first wall bracket, and the pegs of the second housing are arranged at the respective upper end points of the roof portions of the T-shaped recesses of the second wall bracket. This embodiment enables particularly simple assembly. First, the first housing is attached to the first wall bracket, and then, the second housing can be pushed downward in the direction of the first housing and pressed against the connecting element disposed below the first housing by guiding the pegs of the second housing into the T-shaped recesses of the second housing, whereby the second housing is attached to the second wall bracket. Next, the second housing is held by the first housing by the latch of the connecting element, at least temporarily, and in particular until it is fixedly connected to the first housing in another way (e.g., via a separate screw connection) and / or until the second housing itself is fixed to the wall bracket or the wall.

[0023] In one embodiment, the connecting element can comprise a display unit configured to display the operating data of the power converter.

Brief Description of the Drawings

[0024] In the following, the present invention will be further explained and described with reference to the exemplary embodiments shown in the figures.

[0025]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

DETAILED DESCRIPTION OF THE INVENTION

[0026] FIG. 1 schematically shows a power converter having a first housing 10 in an oblique bottom view. The first housing 10 has a rear surface 16 and a peripheral frame 24. Cooling fins 14 are arranged on the rear surface 16 of the housing 10. On the side surfaces of the cooling fins 14, two rear protrusions 12 are arranged on the rear surface 16, each of which has a peg 18 on its inner side. The two rear protrusions 12 surround the cooling fins 14 from two opposite faces. The pegs 18 of the two rear protrusions 12 face each other.

[0027] Figure 1 further schematically shows the wall bracket 20. The wall bracket 20 has a generally U-shaped profile with a base surface 26 and two edge surfaces 28. The base surface 26 has two guides 27 for receiving one wall rail 62 each (see Figure 4). Next, the edge surface 28 has a V-shaped profile with a first leg 56 and a second leg 58. Here, the V-shaped profiles of the two edge surfaces 28 face outward, the first leg 56 is inclined outward, and the second leg 58 is inclined inward. The wall bracket 20 is designed to be attached to a wall or the like by its base surface 26.

[0028] The T-shaped recess 22 is formed at the center of each of the second legs 58 of the two edge surfaces 28, and the T-shaped recess is formed as a holding groove for holding the first housing 10 or the second housing 30 (see Figure 5). The roof portion of the T-shape 22 is arranged parallel to the base surface 26 here. The foot portion of the T-shaped recess 22 extends perpendicularly toward the edge of the second leg 58. The foot portion of the T-shaped recess 22 can open or close at the edge of the second leg 58.

[0029] Figure 2 shows a schematic view from the side of the wall bracket 20. The base surface 26 has two guides 27 for receiving the wall rail 62 (see Figure 4). The edge surface 28 has a V-shaped profile, the first leg 56 of the V-shaped profile is inclined outward, and the second leg 58 of the V-shaped profile is inclined inward.

[0030] Figure 3 schematically shows a power converter having a first housing 10 and a wall bracket 20. The wall bracket 20 is inserted into the housing 10 such that the peg 18 engages with the T-shaped recess 22. In this case, the peg 18 is disposed at one end of the roof portion of the T-shaped recess 22. When inserted, the peg 18 is inserted into the T-shaped recess 22 at the end of the foot portion, guided over the foot portion of the T-shaped recess 22 to the roof portion of the T-shaped recess 22, and then guided from there to one end of the roof portion of the T-shaped recess 22. The housing 10 can be fixed to the wall bracket 20 (particularly, the upper end of the second leg portion 58) by one or more screws 19.

[0031] Figure 4 schematically shows a front view of two wall brackets 20 attached to a wall or the like. Each of the wall brackets 20 has two wall rails 62 that are received in its guide 27. The wall rails 62 allow the wall brackets 20 to be easily attached at the correct intervals. The T-shaped recess 22 is also shown, and a peg 18 or a peg 31 (see FIG. 5) can be inserted and attached to the foot portion thereof.

[0032] Figure 5 schematically shows a power converter having two wall brackets 20, a first housing 10, and a second housing 30. The second housing 30 has a rear surface 49 and a peripheral frame 50. In the right side portion of the figure, the first housing is already fitted to the upper wall bracket 20 and is fixed in place as required.

[0033] The left side of FIG. 5 shows a method by which the second housing 30 can be fitted to the lower wall bracket 20. The second housing 30 has a rear protrusion similar to the first housing, and the inner surface of the rear protrusion has a peg 31. First, the peg 31 of the second housing 30 is inserted into the foot portion of the T-shaped recess 22. After the peg reaches the roof portion of the T-shaped recess 22, the second housing 30 is pushed up so as to guide the peg to the upper end of the roof portion of the T-shaped recess 22. By latching with a connecting element 32 or 64 (see FIG. 6), the second housing 30 can be locked and held with respect to the first housing 10 via the connecting elements 32, 64.

[0034] Figure 6 schematically shows two connecting elements 32, 64. Both have a plate-shaped and elongated basic shape.

[0035] The first connecting element 32 has a base plate 34 with two through recesses 36. Each of the through recesses 36 has an inner peripheral protrusion 46 located at the center of the through recess 36. The first connecting element 32 has four retaining protrusions 38, 40, 42, 44. The retaining protrusion 38 has a retaining lug 37, the retaining protrusion 40 has a retaining lug 39, the retaining protrusion 42 has a retaining lug 41, and the retaining protrusion 44 has a retaining lug 43. The retaining protrusions 38 and 42 are on opposite sides of the base plate 34 and face each other, and their retaining lugs 37 and 41 are oriented parallel in the same direction. The retaining protrusions 40 and 44 are on opposite sides of the base plate 34 and face each other, and their retaining lugs 39 and 43 are oriented parallel in the same direction.

[0036] The second connecting element 64 has a base plate 52 with two through recesses 74 and, optionally, a display element 63. The display element 63, which can have a touch sensor-type surface, can be used, for example, to display status information or operating data of a power converter and to implement a user interface for user interaction with the power converter. The second connecting element 64 includes four retaining protrusions 66, 68, 70, 72. The retaining protrusions 66, 68, 70, 72 each have a retaining lug 65, 67, 69, 71. The retaining protrusions 66 and 70 are located on opposite sides of the base plate 52 and face each other. Their retaining lugs 65 and 69 are oriented parallel in the same direction. The retaining protrusions 68 and 72 are on opposite sides of the base plate 52 and face each other. Their retaining lugs 67 and 69 are oriented parallel in the same direction.

[0037] The connecting element has an insert 48 for closing the through recesses 36, 74. The insert 48 is plate-shaped and has a through recess 54. The insert 48 is made of a highly rigid elastic material such as solid plastic, for example, and can be inserted into the through recesses 36, 74 of the connecting elements 32 and 64. For example, an electric wire can extend through the through recess 54 of the insert 48 to interconnect components of a power converter arranged in different housings 10, 30. The insert 48 seals the through recesses 36, 74 and thus seals the entire power converter (airtight) from a specific environment, and provides an appropriate guide for the electric wire by means of those through recesses 54.

[0038] Furthermore, elastic inserts can be provided in the through recesses 36, 74 of the connecting elements 32, 64. The elastic inserts can seal the associated housing to which they are attached from the environment, and in particular can have grooves into which the protrusions 46 can engage. The sealing elastic insert does not have, for example, a recess or a turned-in recess. The sealing is carried out, for example, against moisture, air, and / or dust. The elastic insert can be formed, for example, as a gel pad. The elastic insert can also optionally have a through recess through which an electric wire (in particular, an electric wire capable of transporting (in total) power on the order of the rated power of the power converter) can pass. For both types of highly elastic or highly rigid inserts, it is advantageous if the connecting elements 32, 64 arranged between the housings have a through recess 54. For example, the connecting elements 32, 64 connected to only one of the housings 10, 30 are provided with an insert without a through recess so as to be able to seal the housings 10, 30.

[0039] FIG. 7 schematically shows a longitudinal section through the connecting elements 32 and 64.

[0040] The connecting element 64 has two through recesses 74. In the connecting element 64, the retaining protrusions 66 and 70 are arranged on opposite sides of each other and face in opposite directions. The retaining protrusions 68 and 72 are arranged on opposite sides of each other and face in opposite directions. The retaining protrusions 66 and 68 point in the same direction and are arranged on the same side of the base plate 52. The retaining protrusions 70 and 72 point in the same direction and are arranged on the same side of the base plate 52.

[0041] The connecting element 32 has two through recesses 36, with the protrusion 46 around the periphery thereof. In the connecting element 32, the retaining protrusions 38 and 42 are arranged on opposite sides of each other and face in opposite directions. The retaining protrusions 40 and 44 are arranged on opposite sides of each other and face in opposite directions. The retaining protrusions 38 and 40 point in the same direction and are arranged on the same side of the base plate 34. The retaining protrusions 42 and 44 point in the same direction and are arranged on the same side of the base plate 34.

[0042] FIG. 8 schematically shows a longitudinal cross-section through the first and second housings 10, 30 and the two connecting elements 32, 64. In the housings 10, 30, slots 25 are arranged for latching the retaining protrusions 38, 40, 42, 44, 66, 68, 70, 72 internally.

[0043] FIG. 9 schematically shows the first housing 10 and the connecting element 64. The connecting element 64 can be arranged in the first housing 10 by inserting the retaining protrusions 70, 72 of the connecting element 64 into the corresponding frame-side slots 25 and latching them with the retaining lugs 69, 71. The frame 24 of the first housing 10 has a through recess 60 corresponding to the through recess 74 of the connecting element 64, and for example, an electric wire can be passed through this through recess 60.

[0044] Figure 10 shows how the connecting element 64 is arranged on the second housing 30. Here, the detent protrusions 66, 68 are inserted into the slots 25 of the second housing and latched into the slots 25 of the second housing 30 by the detent lugs 65, 67. The free detent protrusions 70, 72 of the connecting element 64 can be inserted into the slots of the first housing 10 and latched therein by the detent lugs 69, 72. In this way, the housings 10, 30 can be connected and positioned.

[0045] In particular, in the case of the wall bracket attachment according to FIG. 5, the connecting elements 32, 64 are arranged between the first and second housings 10, 30 and can be latched to the housings 10, 30 as described. In particular, the second housing 30 can be held here at least temporarily by the first housing 10. Subsequently, the housings 10, 30 thus connected can optionally be screwed together. Optionally, a further housing (for example, a third housing) can be attached to the second housing 30 facing the first housing 10 or the first housing 10 facing the second housing 30. Such a further housing can be fixed by a further wall bracket 20 spaced from the wall bracket 20 of the first or second housing 10, 30 via a further wall rail 62. Optionally, a further housing that can be attached horizontally is also conceivable. The connecting wires can be routed through the through recesses 60 in the frame 24 of the first housing 10 and in the frame 50 of the second housing 30, as well as through the through recess 74 of the connecting element 64.

Explanation of Signs

[0046] 10 Housing 12 Rear protrusion 14 Cooling fin 16 Rear surface 18 Peg 19 Screw 20 Wall bracket 22 T-shaped recess 24 Frame 25 slots 26 base surface 27 guide 28 edge surface 30 housing 31 peg 32 connecting element 34 base plate 36 through recess 37, 39, 41, 43 retaining lug 38, 40, 42, 44 retaining projection 46 projection 48 insert 49 rear surface 50 frame 52 base plate 54 through recess 56 first leg 58 second leg 60 recess 62 wall rail 63 display unit 64 connecting element 65, 67, 69, 71 retaining lug 66, 68, 70, 72 retaining projection 74 recess

Claims

1. A modular electronic power converter having a first housing (10) and a second housing (30), and a connecting element (32, 64), the connecting element (32, 64) being arranged between the housings (10, 30) and connectable to at least one of the housings (10, 30) via a detent connection. The connecting element (32, 64) is plate-shaped and has a base plate (34, 52) having at least one through recess (36, 74).

2. Each of the housings (10, 30) has a rear surface (16, 49) and a peripheral frame (24, 50), and the peripheral frame (24, 50) of the first and / or the second housing (10, 30) has at least one slot (25) in a first frame surface and / or a second frame surface. The power converter according to claim 1.

3. The base plate (34, 52) has at least one first detent projection (38, 40, 66, 68), the at least one first detent projection (38, 40, 66, 68) extending transversely, in particular perpendicularly, to the base plate (34, 52) and having a first detent lug (37, 39, 65, 67). The power converter according to claim 1.

4. The detent projections (38, 40, 42, 44, 66, 68, 70, 72) can latch into the slots (25) of the first or the second housing (10, 30). The power converter according to claim 3.

5. The base plate (34, 52) of the connecting element (32, 64) has second detent projections (42, 44, 70, 72) on the side opposite to the first detent projections (38, 40, 66, 68), the second detent projections (42, 44, 70, 72) extending transversely, in particular perpendicularly, to the base plate (34, 52) and having second detent lugs (41, 43, 69, 71). The power converter according to claim 3 or 4.

6. The peripheral frames (24, 50) of the first and second housings (10, 30) each comprise the slot (25), and the slots (25) of the housings (10, 30) are arranged such that opposing detent projections (38, 40, 42, 44, 66, 68, 70, 72) are latched in the slots (25) of the housings (10, 30) so that the housings (10, 30) can be connected by the connecting elements (32, 64). The connecting elements (32, 64) are arranged between the peripheral frames (24, 50) of the housings (10, 30). The power converter according to claim 4 or 5.

7. The base plates (34, 52) are made of a solid material, in particular solid plastic. The power converter according to any one of claims 1 to 6.

8. The at least one through recess (36) has a peripheral projection (46). The power converter according to any one of claims 1 to 7.

9. The connecting elements (32, 64) have an elastic insert with a peripheral groove, and the elastic insert is arranged in the through recess (36) such that the peripheral projection (46) engages with the peripheral groove so that the elastic insert seals the through recess (36). The power converter according to claim 8.

10. The elastic insert has at least one recess formed as a folded recess or a through recess (54), and the through recess (54) is designed to function as a feed-through for the energizing lines of the power converter. The power converter according to claim 9.

11. The power converter includes a wall bracket (20), and the first housing (10) and / or the second housing (30) each have pegs (18, 31) on opposing third and fourth frame surfaces that are oriented substantially perpendicular to the first frame surface and / or the second frame surface. The wall bracket (20) has a generally U-shaped profile having a base surface (26) attachable to a wall and two edge surfaces. Each edge surface (28) has a T-shaped recess (22). The edge surfaces (28) of the wall bracket (20) are supported on the opposing third and fourth frame surfaces of the first or second housing (10, 30) such that the pegs (18, 31) engage one of the respective T-shaped recesses (22). The power converter according to any one of claims 1 to 10.

12. The T-shaped recess (22) of the wall bracket (20) having a T-shaped roof portion is substantially parallel to the base surface (26) and extends parallel to the third and fourth frame surfaces. The power converter according to claim 11.

13. The pegs (18, 31) have a circular cross-section. The power converter according to claim 11 or 12.

14. The first housing (10) and / or the second housing (30) have two elongated rear protrusions (12) that are parallel to each other in their longitudinal directions and extend parallel to the third and fourth frame surfaces. The pegs (18, 31) are disposed on the surfaces of the rear protrusions (12) facing each other. The power converter according to any one of claims 11 to 13.

15. The edge surfaces (28) of the wall bracket (20) are formed as a V-shaped profile having a first leg (56) and a second leg (58). The first leg (56) of each edge surface (28) is adjacent to the base surface, the second leg (58) of each edge surface (28) is adjacent to the first leg (56), and the V-shaped vertices each face outward. The rear protrusion (12) lies flat on the outer surface of the respective second leg (58) of the wall bracket (20). The power converter according to claim 14.

16. The T-shaped recesses (22) face each other and are centered within the respective second legs (58) of the edge surfaces (28). The power converter according to claim 15.

17. The foot point of the T-shaped recess (22) is closed, and the power converter according to any one of claims 11 to 16.

18. The power converter according to any one of claims 11 to 17, wherein at least one of the housings (10, 30) is fixed to the wall bracket (20) by a screw (19).

19. The first housing (10) is connected to the first wall bracket (20), the second housing (30) is connected to the second wall bracket (20), and in the assembled state of the power converter, the pegs (18, 31) of the first housing (10) are arranged at the respective lower end points of the roof portion of the T-shaped recess (22) of the first wall bracket (20), and the pegs (18, 31) of the second housing (30) are arranged at the respective upper end points of the roof portion of the T-shaped recess (22) of the second wall bracket (20), and the power converter according to any one of claims 11 to 18.

20. The power converter according to any one of claims 1 to 19, wherein the connecting element (32, 64) comprises a display unit configured to display the operating data of the power converter.

Images