Inverter

Abstract

The utility model provides an inverter, and the inverter comprises a housing which is provided with an accommodation cavity; the shielding partition plate is connected to the shell and arranged in the containing cavity, and the shielding partition plate is made of an electromagnetic shielding material; wherein the shielding partition plate is located in the middle of the containing cavity, the shielding partition plate divides the inner space of the containing cavity, and a first cavity and a second cavity are formed. The shielding partition plate divides the inner space of the containing cavity into the first cavity and the second cavity, and the first cavity and the second cavity can contain different functional modules, so that the magnetic interference between the functional modules in the first cavity and the functional modules in the second cavity can be reduced, the EMI performance of the whole machine is improved, meanwhile, the arrangement of a magnetic ring is reduced, and the cost is reduced. The equipment assembly difficulty is reduced, and the production capacity is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic energy storage devices, in particular to an inverter. BACKGROUND

[0002] The inverter is one of the important components of a photovoltaic energy storage system, which is used to convert the variable direct current voltage generated by a photovoltaic solar panel into a power frequency alternating current. The inverter is usually internally provided with multiple functional modules.

[0003] In the related art, in order to reduce the magnetic interference between the functional modules in the inverter, a magnetic ring needs to be sleeved on the lead of each functional module, which increases the difficulty of equipment assembly and affects the production capacity. CONTENT OF THE UTILITY MODEL

[0004] The embodiment of the present application provides an inverter, which comprises a shell having a containing cavity, a shielding partition plate connected to the shell and arranged in the containing cavity, and the shielding partition plate is made of electromagnetic shielding material; wherein the shielding partition plate is located in the middle of the containing cavity, the shielding partition plate divides the internal space of the containing cavity and forms a first chamber and a second chamber, the first chamber and the second chamber are respectively located on two sides of the shielding partition plate, and the first chamber and the second chamber can accommodate functional modules.

[0005] In some embodiments, the inverter further comprises a first support plate connected to the shell and arranged in the first chamber, and the first support plate is made of electromagnetic shielding material; wherein the first support plate and the shielding partition plate have an included angle, the first support plate is located in the middle of the first chamber, the first support plate divides the internal space of the first chamber and forms a first accommodation area and a second accommodation area, and the first accommodation area and the second accommodation area are respectively located on two sides of the first support plate.

[0006] In some embodiments, the functional module comprises a control board and a filter board, the control board and the filter board are arranged in the first accommodation area, and the control board and the filter board are fixed to the first support plate.

[0007] In some embodiments, the functional module comprises a power board, the power board is arranged in the second accommodation area, and the power board is fixed to the bottom wall of the containing cavity.

[0008] In some embodiments, the inverter further comprises a heat sink arranged on the outside of the shell, and the position of the heat sink corresponds to the position of the power board.

[0009] In some embodiments, the inverter further comprises a first support column arranged in the second accommodation area, the first support column is arranged in the depth direction of the containing cavity, one end of the first support column is fixed to the first support plate, and the other end of the first support column is fixed to the bottom wall of the containing cavity.

[0010] In some embodiments, the inverter further comprises a bracket, the bracket is arranged in the middle of the accommodating cavity, and the bracket is fixed to the side wall of the accommodating cavity, and the first support plate is fixed to the bracket.

[0011] In some embodiments, the inverter further comprises a second support plate, the second support plate is connected to the shell and arranged in the second chamber, the second support plate is made of electromagnetic shielding material; wherein the second support plate has an included angle with the shielding partition plate, the second support plate is located in the middle of the second chamber, the second support plate divides the internal space of the second chamber and forms a third accommodation area and a fourth accommodation area, and the third accommodation area and the fourth accommodation area are respectively located on two sides of the second support plate.

[0012] In some embodiments, the functional module comprises an electromagnetic interference output plate, the electromagnetic interference output plate is arranged in the third accommodation area, and the electromagnetic interference output plate is fixed to the second support plate.

[0013] In some embodiments, the functional module comprises an electromagnetic interference input plate, the electromagnetic interference input plate is arranged in the fourth accommodation area, and the electromagnetic interference input plate is fixed to the bottom wall of the accommodating cavity.

[0014] The shielding partition plate divides the internal space of the accommodating cavity into a first chamber and a second chamber, the first chamber and the second chamber can accommodate different functional modules, so that the magnetic interference between the functional modules in the first chamber and the functional modules in the second chamber can be reduced, and the EMI performance of the whole machine can be improved. At the same time, the application reduces the setting of the magnetic ring, reduces the difficulty of equipment assembly, and improves the production capacity. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The first structure diagram of the inverter provided by the application is shown, wherein the shell is provided with a shielding partition plate.

[0016] Figure 2 The second structure diagram of the inverter provided by the application is shown, wherein the shell is provided with a shielding partition plate, a first support plate and a second support plate.

[0017] Figure 3 The third structure diagram of the inverter provided by the application is shown, wherein the shell is provided with a shielding partition plate, a first support plate and a second support plate, and the first support plate and the second support plate are both provided with a functional module.

[0018] Figure 4 The internal structure diagram of the shell provided by the application is shown.

[0019] Explanation of main element symbols

[0020] 10, housing; 11, accommodating cavity; 12, first chamber; 121, first receiving area; 122, second receiving area; 13, second chamber; 131, third receiving area; 132, fourth receiving area; 14, joint assembly; 15, hanger; 16, cooling fan; 20, shielding partition; 30, functional module; 31, control board; 32, filter board; 33, power board; 34, electromagnetic interference output board; 35, electromagnetic interference input board; 40, first support plate; 50, first support column; 60, bracket; 70, second support plate; 80, second support column. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0022] In the description of the embodiments of the present application, the words such as "exemplary" or "for example" are used to represent an example, illustration or description. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. In fact, the words such as "exemplary" or "for example" are intended to present the relevant concept in a specific manner. In the description of the embodiments of the present application, the directions of the drawings attached to the specification are used as the basis for description, which aims to more clearly describe the present application, but not to limit the specific directions of the product in use.

[0023] The present application provides an inverter, which has the technical effects of reducing equipment assembly difficulty and improving production capacity.

[0024] Figure 1 A first structural schematic diagram of an inverter provided by the present application is shown in the figure, in which a shielding partition is arranged in the housing. Figure 2 A second structural schematic diagram of an inverter provided by the present application is shown in the figure, in which a shielding partition, a first support plate and a second support plate are arranged in the housing. Figure 3 A third structural schematic diagram of an inverter provided by the present application is shown in the figure, in which a shielding partition, a first support plate and a second support plate are arranged in the housing, and the first support plate and the second support plate are both provided with functional modules.

[0025] As shown in the figures, the inverter provided by the present application comprises a housing, a shielding partition, a first support plate, a second support plate, a first chamber, a second chamber, a joint assembly, a hanger, a cooling fan, a first support column, a second support column, a bracket, a functional module, a control board, a filter board, a power board, an electromagnetic interference output board and an electromagnetic interference input board. Figures 1 to 3As shown, the inverter comprises a housing 10, a shielding partition 20 and a plurality of functional modules 30, wherein the housing 10 has a receiving cavity 11 formed with a cavity opening through one side of the housing 10, and the shielding partition 20 and the functional modules 30 are arranged in the receiving cavity 11. The shielding partition 20 is made of electromagnetic shielding material. The shielding partition 20 is connected to the housing 10 and located in the middle of the receiving cavity 11. The shielding partition 20 divides the internal space of the receiving cavity 11 and forms a first chamber 12 and a second chamber 13, and the first chamber 12 and the second chamber 13 are respectively located on two sides of the shielding partition 20, and the first chamber 12 and the second chamber 13 can accommodate the functional modules 30.

[0026] Through the inverter provided in the present application, the internal space of the receiving cavity 11 is divided into the first chamber 12 and the second chamber 13 by the shielding partition 20, and the first chamber 12 and the second chamber 13 can accommodate different functional modules 30, so that the magnetic interference between the functional modules 30 in the first chamber 12 and the functional modules 30 in the second chamber 13 can be reduced, and the EMI (electromagnetic interference) performance of the whole machine can be improved. Moreover, the shielding partition 20 is used as an electromagnetic shielding structure in the present application, the setting of a magnetic ring is reduced, the difficulty of equipment assembly is reduced, and the production capacity is improved.

[0027] In some embodiments, the plurality of functional modules 30 can comprise a control board 31, a filter board 32, a power board 33, an electromagnetic interference output board 34 and an electromagnetic interference input board 35. Among them, the control board 31, the filter board 32 and the power board 33 are arranged in the first chamber 12, and the electromagnetic interference output board 34 and the electromagnetic interference input board 35 are arranged in the second chamber 13. The control board 31 is connected to the power board 33 and the filter board 32 through a signal line. The electromagnetic interference input board 35, the power board 33, the filter board 32 and the electromagnetic interference output board 34 are sequentially connected through a power line. The control board 31, the filter board 32, the power board 33, the electromagnetic interference output board 34 and the electromagnetic interference input board 35 are all arranged to be grounded.

[0028] Specifically, the control board 31 is used to analyze the sampling signal and control the on-off of the switching tube, and realizes the control function of system voltage boosting, inverting and the like. The filter board 32, also known as Filter board, plays a filtering and protection role. The power board 33, also known as Power board, is used for AC-DC conversion.

[0029] The electromagnetic interference output board 34, also known as EMI output board, passes alternating current, and is used for connecting the power grid or / and the load. The electromagnetic interference output board 34 can filter and suppress the noise generated by the inverter circuit, and filter the high harmonic current into the power grid or the load.

[0030] The electromagnetic interference input plate 35, also referred to as an EMI input plate, is connected to a DC power supply, and is used to connect a PV photovoltaic panel (i.e., a photovoltaic solar panel). The electromagnetic interference input plate 35 is capable of filtering various interference signals in the current input to the inverter.

[0031] In this way, the shielding partition 20 can effectively reduce the magnetic interference of the filter plate 32 and the power plate 33 on the electromagnetic interference output plate 34 and the electromagnetic interference input plate 35, and improve the working stability between the various functional modules 30.

[0032] It can be understood that the plurality of functional modules 30 of the inverter can be configured according to actual needs, and the specific types of the various functional modules 30 described above can also be adjusted as appropriate, which is not limited in the present application.

[0033] In some embodiments, the shell 10 is in the shape of a cuboid as a whole. For the convenience of description, the length direction of the shell 10 is defined as the X-axis direction, the width direction of the shell 10 is defined as the Y-axis direction, and the thickness direction (i.e., the depth direction of the accommodation cavity 11) of the shell 10 is defined as the Z-axis direction.

[0034] In some embodiments, the shell 10 is further provided with a cover plate (not shown in the figure), which can shield the cavity opening of the accommodation cavity 11 to protect the structure inside the shell 10.

[0035] In some embodiments, one end of the shell 10 is provided with a connector assembly 14, which is electrically connected to the functional module 30, and is used to establish electrical connection with other devices outside the inverter. For example, the connector assembly 14 is located at one end of the shell 10 close to the second chamber 13, so as to shorten the wiring distance between the connector assembly 14, the electromagnetic interference output plate 34 and the electromagnetic interference input plate 35.

[0036] In some embodiments, the outer side of the shell 10 is provided with a hanging rack 15, and the shell 10 can be hung and installed on a fixed object such as a wall through the hanging rack 15.

[0037] In some embodiments, the shielding partition 20 can be a plate made of metal material, or a plate with an electromagnetic shielding coating on the surface, so as to shield the interference between the first chamber 12 and the second chamber 13.

[0038] In some embodiments, the shielding partition 20 is in the shape of a long strip as a whole, the length direction of the shielding partition 20 is parallel to the width direction of the shell 10, and the width direction of the shielding partition 20 is parallel to the depth direction of the accommodation cavity 11. In this way, the shielding partition 20 divides the internal space of the accommodation cavity 11 into the first chamber 12 and the second chamber 13 in the length direction of the shell 10, so that the first chamber 12 and the second chamber 13 are distributed in sequence along the length direction of the shell 10.

[0039] It can be understood that the position of the shielding partition 20 in the shell 10 determines the space size of the first chamber 12 and the second chamber 13. In actual applications, the position of the shielding partition 20 in the shell 10 can be set according to the volume of the functional module 30. In the example of the present application, the length of the first chamber 12 is greater than the length of the second chamber 13.

[0040] In some embodiments, the shielding partition 20 is fixed to the bottom of the accommodating cavity 11 by screws. In this way, the installation or disassembly of the shielding partition 20 can be facilitated.

[0041] In some embodiments, the length of the shielding partition 20 is less than the width of the shell 10, so that one end of the shielding partition 20 is spaced from the inner wall of the accommodating cavity 11 to form a heat dissipation opening. The end of the shielding partition 20 close to the heat dissipation opening is provided with a heat dissipation fan 16, which can accelerate the heat exchange between the first chamber 12 and the second chamber 13 through air suction to achieve heat dissipation effect.

[0042] In some embodiments, the inverter further comprises a first support plate 40 connected to the shell 10 and arranged in the first chamber 12, and the first support plate 40 is made of electromagnetic shielding material. The first support plate 40 and the shielding partition 20 have an included angle, the first support plate 40 is located in the middle of the first chamber 12, the first support plate 40 divides the internal space of the first chamber 12 and forms a first receiving area 121 and a second receiving area 122, and the first receiving area 121 and the second receiving area 122 are respectively located on two sides of the first support plate 40.

[0043] It can be understood that the first support plate 40 divides the internal space of the first chamber 12 into the first receiving area 121 and the second receiving area 122, and the first receiving area 121 and the second receiving area 122 can accommodate different functional modules 30. In this way, the magnetic interference between the functional module 30 in the first receiving area 121 and the functional module 30 in the second receiving area 122 can be further reduced in the interior of the first chamber 12, thereby improving the EMI performance of the whole machine.

[0044] In the example of the present application, the control board 31 and the filter board 32 are arranged in the first receiving area 121, and the control board 31 and the filter board 32 are fixed to the first support plate 40 by screws. The power board 33 is arranged in the second receiving area 122, and the power board 33 is fixed to the bottom wall of the accommodating cavity 11 by screws. In this way, the first support plate 40 can effectively reduce the magnetic interference of the power board 33 on the control board 31 and the filter board 32, and improve the working stability between the functional modules 30.

[0045] In some embodiments, the inverter further comprises a heat sink, the heat sink is arranged outside the housing, and the position of the heat sink corresponds to the position of the power board. The heat sink is used to dissipate heat from the housing 10 and the structure inside the housing 10. For example, the heat sink is arranged at the outer end of the housing 10 corresponding to the first chamber 12, and the heat sink can be a fin heat sink.

[0046] In addition, the position of the power board 33 is arranged at the bottom of the first chamber 12, so that the position of the heat sink corresponds to the position of the power board 33. It can be understood that in actual application, the power board 33 is the main heat source in the inverter, and by arranging the heat sink close to the position of the power board 33, the heat dissipated by the power board 33 can be quickly taken away, thereby improving the heat dissipation efficiency. Figure 4 The internal structure diagram of the housing provided in the present application is shown.

[0047] As shown in Figure 3 and Figure 4 In some embodiments, the inverter further comprises a first support column 50, the first support column 50 is arranged in the second receiving area 122, the first support column 50 is arranged along the depth direction of the accommodating cavity 11, one end of the first support column 50 is fixed to the first support plate 40, and the other end of the first support column 50 is fixed to the bottom wall of the accommodating cavity 11. For example, the first support column 50 is provided with a threaded hole, a screw is arranged through the first support plate 40 and is threadedly connected to the threaded hole of the first support column 50. In this way, the first support plate 40 can be supported and fixed by the first support column 50.

[0048] In some embodiments, the inverter further comprises a bracket 60, the bracket 60 is arranged in the middle of the accommodating cavity 11, the bracket 60 is fixed to the side wall of the accommodating cavity 11, and the first support plate 40 is fixed to the bracket 60. For example, the bracket 60 has an L-shaped cross section, the bracket 60 is arranged along the side wall of the accommodating cavity 11, the bracket 60 is fixed to the side wall of the accommodating cavity 11 by a screw, and the first support plate 40 is fixed to the bracket 60 by a screw. In this way, the first support plate 40 can be supported and fixed by the bracket 60.

[0049] In the example of the present application, the first support column 50 is arranged at a portion of the first support plate 40 close to the filter board 32, and the bracket 60 is arranged at a portion of the first support plate 40 close to the control board 31. The number of first support columns 50 is greater than or equal to 2, and the first support columns 50 are distributed at intervals. The number of brackets 60 is greater than or equal to 2, a portion of the brackets 60 is arranged along the length direction of the accommodating cavity 11, and another portion of the brackets 60 is arranged along the width direction of the accommodating cavity 11. In this way, the first support plate 40 can be supported from multiple positions by the cooperation of the multiple first support columns 50 and the multiple brackets 60, thereby improving the installation stability of the first support plate 40.

[0050] It is worth noting that the shape of the first support plate 40 can be configured according to the height of the electronic device in the second receiving area 122, and the height of the first support column 50 and the bracket 60 can also be adaptively adjusted. For example, the first support plate 40 has a stepped folding part between a part close to the filter plate 32 and a part close to the control plate 31, so that the part of the first support plate 40 close to the filter plate 32 is higher than the part close to the control plate 31. Correspondingly, the height of the first support column 50 can be higher than the height of the bracket 60, so that the first support plate 40 can be adaptively fixed to the first support column 50 and the bracket 60. In this way, the support and fixation of the first support plate 40 with uneven surface can be realized, while the space layout is optimized and the space utilization is improved.

[0051] As shown in Figures 1 to 3 In some embodiments, the inverter further includes a second support plate 70 connected to the shell 10 and arranged in the second cavity 13, and the second support plate 70 is made of electromagnetic shielding material. The second support plate 70 has an included angle with the shielding partition plate 20, the second support plate 70 is located in the middle of the second cavity 13, the second support plate 70 divides the internal space of the second cavity 13 and forms a third receiving area 131 and a fourth receiving area 132, and the third receiving area 131 and the fourth receiving area 132 are respectively located on two sides of the second support plate 70.

[0052] It can be understood that the second support plate 70 divides the internal space of the second cavity 13 into the third receiving area 131 and the fourth receiving area 132, and the third receiving area 131 and the fourth receiving area 132 can accommodate different functional modules 30. In this way, the magnetic interference between the functional module 30 in the third receiving area 131 and the functional module 30 in the fourth receiving area 132 can be further reduced in the internal of the second cavity 13, thereby improving the EMI performance of the whole machine.

[0053] In the example of the present application, the electromagnetic interference output plate 34 is arranged in the third receiving area 131, and the electromagnetic interference output plate 34 is fixed to the second support plate 70 by screws. The electromagnetic interference input plate 35 is arranged in the fourth receiving area 132, and the electromagnetic interference input plate 35 is fixed to the bottom wall of the accommodating cavity 11 by screws. In this way, the second support plate 70 can effectively reduce the magnetic interference of the electromagnetic interference input plate 35 on the control plate 31 and the filter plate 32, and improve the working stability between the functional modules 30.

[0054] As shown in Figure 3 and Figure 4As shown, in some embodiments, the inverter further comprises a second support column 80, which is arranged in the fourth accommodating area 132 and extends along the depth direction of the accommodating cavity 11. One end of the second support column 80 is fixed to the second support plate 70, and the other end of the second support column 80 is fixed to the bottom wall of the accommodating cavity 11. For example, the second support column 80 is provided with a threaded hole, and a screw is arranged through the second support plate 70 and threadedly connected to the threaded hole of the second support column 80. In this way, the second support plate 70 can be supported and fixed by the second support column 80.

[0055] In the examples of the present application, the number of second support columns 80 is greater than or equal to 2, and the plurality of second support columns 80 are distributed at intervals. In this way, the plurality of second support columns 80 support the second support plate 70 from multiple positions, improving the mounting stability of the second support plate 70.

[0056] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the above-described embodiments of the present application should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalent elements of the claims are intended to be embraced in the present application.

Claims

1. An inverter, characterized in that, include: The housing has a receiving cavity; A shielding partition is connected to the housing and disposed in the accommodating cavity. The shielding partition is made of electromagnetic shielding material. The shielding partition is located in the middle of the accommodating cavity. The shielding partition divides the internal space of the accommodating cavity and forms a first chamber and a second chamber. The first chamber and the second chamber are respectively located on two sides of the shielding partition. Both the first chamber and the second chamber can accommodate functional modules.

2. The inverter as described in claim 1, characterized in that, The inverter also includes a first support plate, which is connected to the housing and disposed in the first chamber. The first support plate is made of electromagnetic shielding material. The first support plate and the shielding partition have an included angle. The first support plate is located in the middle of the first chamber. The first support plate divides the internal space of the first chamber and forms a first receiving area and a second receiving area. The first receiving area and the second receiving area are respectively located on two sides of the first support plate.

3. The inverter as described in claim 2, characterized in that, The functional module includes a control board and a filter board, both of which are disposed in the first receiving area and are fixed to the first support plate.

4. The inverter as described in claim 2, characterized in that, The functional module includes a power board, which is disposed in the second receiving area and fixed to the bottom wall of the accommodating cavity.

5. The inverter as described in claim 4, characterized in that, The inverter also includes a heat sink, which is disposed on the outside of the housing and the position of the heat sink corresponds to the position of the power board.

6. The inverter as described in claim 2, characterized in that, The inverter also includes a first support column, which is disposed in the second receiving area. The first support column extends along the depth direction of the receiving cavity. One end of the first support column is fixed to the first support plate, and the other end of the first support column is fixed to the bottom wall of the receiving cavity.

7. The inverter as described in claim 2, characterized in that, The inverter also includes a bracket, which is disposed in the middle of the accommodating cavity and fixed to the side wall of the accommodating cavity, and the first support plate is fixed to the bracket.

8. The inverter as described in claim 1, characterized in that, The inverter also includes a second support plate, which is connected to the housing and disposed in the second chamber. The second support plate is made of electromagnetic shielding material. The second support plate and the shielding partition have an included angle. The second support plate is located in the middle of the second chamber. The second support plate divides the internal space of the second chamber and forms a third receiving area and a fourth receiving area. The third receiving area and the fourth receiving area are respectively located on two sides of the second support plate.

9. The inverter as described in claim 8, characterized in that, The functional module includes an electromagnetic interference output board, which is disposed in the third containment area and fixed to the second support plate.

10. The inverter as claimed in claim 8, characterized in that, The functional module includes an electromagnetic interference input board, which is disposed in the fourth receiving area and fixed to the bottom wall of the accommodating cavity.

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