Inductor connection structure applied to photovoltaic inverter and photovoltaic inverter

Abstract

The utility model belongs to the field of inverters, and provides an inductor connecting structure applied to a photovoltaic inverter and the photovoltaic inverter. The driving board is electrically connected with the main board through the conductive column I; the inductance plate is electrically connected with the driving plate through a conductive column II; the inversion inductance assembly is installed on the inductance plate, and the inversion inductance assembly is electrically connected with the driving plate through the inductance plate; and the boost inductor assembly is mounted on the inductor plate. Compared with the prior art, the utility model has the advantages that the inductor is directly welded on the inductor plate, is electrically connected with the conductive column II through the wire in the PCB, and is further connected with the mainboard through the conductive column I, so that the connection mode between the inductor and the driving plate is effectively simplified, and the internal space occupation is greatly reduced; therefore, the overall size of the inverter is more compact, and the material cost and the assembly difficulty are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of inverter, concretely relates to a kind of inductance connection structure and photovoltaic inverter applied to photovoltaic inverter. BACKGROUND

[0002] In power electronic equipment, inductance is important energy storage and filter element, its connection mode directly influences the performance, reliability and cost of equipment.

[0003] For prior art, inductance and drive board are usually connected by long wire, this connection mode not only occupies a large amount of internal space, leads to equipment volume increase, and electromagnetic interference is easily generated, influences system electromagnetic compatibility (EMC), in addition, the use of long wire also increases material cost and assembly difficulty, is not conducive to large-scale production. UTILITY MODEL CONTENT

[0004] For the above-mentioned deficiencies of prior art, the technical problem to be solved by the utility model is to provide a kind of inductance connection structure and photovoltaic inverter applied to photovoltaic inverter.

[0005] The technical scheme that the utility model solves its technical problem is to provide a kind of inductance connection structure applied to photovoltaic inverter, comprising: mainboard;

[0006] Drive board, the drive board is electrically connected with the mainboard by conductive column one;

[0007] Inductance board, the inductance board is electrically connected with the drive board by conductive column two;

[0008] Inverter inductance component, the inverter inductance component is installed on the inductance board, and the inverter inductance component is electrically connected with the drive board by the inductance board;

[0009] Boost inductance component, the boost inductance component is installed on the inductance board, one end of the boost inductance component is electrically connected with the mainboard by conductive column component penetrating the drive board, and the boost inductance component is electrically connected with the drive board by the inductance board.

[0010] In the above-mentioned inductance connection structure applied to photovoltaic inverter, the boost inductance component and the inverter inductance component both have two inductances, each inductance has two ports, wherein each inductance in the boost inductance component has one port and the mainboard is electrically connected by the conductive column component.

[0011] In the above-mentioned inductance connection structure applied to photovoltaic inverter, the spacing range between the drive board and the mainboard is 18mm-30mm.

[0012] In the inductance connecting structure applied to the photovoltaic inverter, the distance between the driving plate and the inductance plate is 3-5mm.

[0013] In the inductance connecting structure applied to the photovoltaic inverter, the conductive column assembly is composed of the conductive column II and the conductive column I connected to the conductive column II, or the conductive column assembly is composed of the conductive column II and a copper column installed on the conductive column II.

[0014] In the inductance connecting structure applied to the photovoltaic inverter, the conductive column II and the inductance are connected to the inductance plate through soldering.

[0015] In the inductance connecting structure applied to the photovoltaic inverter, the conductive column II is a 5mm specification patch nut or a 3mm specification copper column.

[0016] In the inductance connecting structure applied to the photovoltaic inverter, the conductive column I is a 20mm specification patch nut or a 20mm specification copper column or an 18mm specification copper column.

[0017] In the inductance connecting structure applied to the photovoltaic inverter, the top end of the copper column is provided with a connecting hole, and a through hole is formed in the main plate, and the connecting hole and the through hole are aligned and communicated to allow the fixing member to pass through.

[0018] The utility model discloses a technical scheme that solves its technical problems, and further proposes a photovoltaic inverter, which is installed with the inductance connecting structure applied to the photovoltaic inverter, further comprises a transformer, the transformer is installed on the inductance plate, and the transformer is electrically connected with the driving plate through the inductance plate.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] (1) The wireless integrated inductance connecting structure and photovoltaic inverter directly weld the inductance on the inductance plate, realize electrical connection through the wire and the conductive column II in the PCB, and then connect the main plate through the conductive column I, which effectively simplifies the connection mode between the inductance and the driving plate, greatly reduces the internal space occupation, makes the overall volume of the inverter more compact, and reduces the material cost and assembly difficulty.

[0021] (2) By reasonably controlling the distance between the driving plate and the inductance plate, interference with the conductive column II and other components can be avoided, and the electromagnetic compatibility of the system can be effectively improved. DRAWINGS

[0022] Figure 1 It is the sectional whole structure schematic diagram of the application.

[0023] Figure 2 is Figure 1 is a local enlarged view of A in

[0024] Figure 3 is an explosion view of the main board, the drive board, the inductance board, and the boost inductance component and the inverter inductance component on the inductance board.

[0025] In the figure, 1 is a main board; 10 is a through hole;

[0026] 2 is a drive board; 20 is a conductive column I;

[0027] 3 is an inductance board; 30 is an inductor;

[0028] 4 is a conductive column component; 40 is a conductive column II; 41 is a copper column; 410 is a connecting hole;

[0029] 5 is an inverter inductance component;

[0030] 6 is a boost inductance component;

[0031] 7 is a transformer. DETAILED DESCRIPTION

[0032] The following is a specific embodiment of the present application and further describes the technical scheme of the present application in combination with the drawings, but the present application is not limited to these embodiments. Embodiment one:

[0033] As shown in Figures 1 to 3 , an inductance 30 connection structure applied to a photovoltaic inverter, comprising: a main board 1, the main board 1 is a PCB board with a main control chip and its peripheral module circuit; a drive board 2, the drive board 2 is a PCB board with functions of drive control, IGBT drive circuit, inverter control, and overcurrent protection, etc. of power switch, the drive board 2 is electrically connected with the main board 1 through a conductive column I 20; an inductance board 3, the inductance board is a PCB board with different sections and independent wires, the inductance board 3 is electrically connected with the drive board 2 through a conductive column II 40; an inverter inductance component 5, the inverter inductance component 5 is installed on the inductance board 3, the inverter inductance component 5 is electrically connected with the drive board 2 through the inductance board 3; a boost inductance component 6, the boost inductance component 6 is installed on the inductance board 3, one end of the boost inductance component 6 is electrically connected with the main board 1 through a conductive column component 4 penetrating the drive board 2, the boost inductance component 6 is electrically connected with the drive board 2 through the inductance board 3.

[0034] In the embodiment, the electrically conductive column two 40 provided on the inductance plate 3 is electrically connected with the driving plate 2, and the electrically conductive column one 20 on the driving plate 2 is electrically connected with the main plate 1, so that the lifting inductance 30 component on the inductance plate 3 can be electrically connected with the main plate 1 through the electrically conductive column component 4, and the inductance plate 3 is also electrically connected with the driving plate 2, thereby ensuring the stability and reliability of signal transmission. Compared with the inductance 30 in the prior art, the two ends of the inductance 30 are usually led out through long wires, and finally the copper sheet of the wire end is mounted on the driving plate 2 to realize electrical connection. In the embodiment, the electrically conductive column component 4 is used instead of the long wire, which avoids the long wire occupying space and makes the inside of the inverter messy, reduces the material cost, simplifies the overall assembly process, improves the quality and consistency of the product, and ensures the reliability and safety under long-term use.

[0035] As shown in Figures 1 to 3 , the boost inductance component 6 and the inverter inductance component 5 in the embodiment each have two inductances 30, each inductance 30 has two ports, and each inductance 30 in the boost inductance component 6 has one port connected with the main plate 1, and the port and the main plate 1 are connected through the electrically conductive column component 4. The inductance plate 3 has a boost inductance component mounting area and an inverter inductance component mounting area, that is, the inductance plate 3 has 8 electrically conductive sections that are not connected with each other, and one end of each electrically conductive section is electrically connected with 8 ports of 4 inductances 30. Correspondingly, the other end of each electrically conductive section is electrically connected with the electrically conductive column two 40 mounted on the inductance plate 3. Preferably, the electrically conductive column component 4 in the embodiment can be formed by the combination of the above-mentioned electrically conductive column two 40 and the electrically conductive column one 20, or by the combination of the electrically conductive column two 40 and the copper column 41. Specifically, as shown in Figure 2 , the electrically conductive column two 40 in the embodiment can adopt a patch nut, or a copper column 41 with a specification of 3 mm, wherein the patch nut has multiple styles, and has two styles with heights of 5 mm and 20 mm. The electrically conductive column one 20 or the copper column 41 mounted on the driving plate 2 can be electrically connected with the main plate 1. After the patch nut is provided on the inductance plate 3, the copper column 41 can be threadedly connected and mounted on the patch nut with a height of 5 mm, thereby ensuring the relative stability between the two, and at the same time, the copper column 41 penetrates through the driving plate 2 and is reserved with sufficient length to extend to the main plate 1, thereby ensuring the stable connection between the copper column 41 and the main plate 1, and further ensuring that the electric signal is transmitted to the main plate 1 through the inductance plate 3, and the connection of the entire circuit is completed. Of course, the patch nut can also be replaced by the copper column 41, that is, two copper columns 41 are designed to realize the electrical connection between the inductance plate 3 and the main plate 1.

[0036] Preferably, the conductive column one 20 in the embodiment can be a 20mm specification patch nut or a 20mm specification copper column 41 or a 18mm specification copper column 41, which are combined and installed by different models of patch nuts or copper columns 41 to realize the electrical connection between the main board 1, the drive board 2 and the inductor board 3. The overall structure is relatively simple, and the flexibility and convenience of the user during installation operation are improved.

[0037] Preferably, the distance between the drive board 2 and the main board 1 in the embodiment is in the range of 18mm-30mm, that is, the distance between the two cannot be lower than 18mm to ensure that it will not be limited by the height of some patch nuts and other components due to too close distance, and the design that the distance cannot be higher than 30mm can also effectively prevent the influence on electromagnetic compatibility due to too long line. In addition, the distance between the drive board and the inductor board in the embodiment is preferably in the range of 3mm-5mm.

[0038] It should be noted that the conductive column two 40 and the inductor 30 in the embodiment are connected to the inductor board 3 by soldering, that is, by welding the inductor 30 on the inductor board 3, the reliable connection between the inductor 30 and the inductor board 3 is ensured. After the conductive column two 40 (i.e. 5mm high patch nut or 3mm high copper column) is accurately positioned and installed at the specified position on the inductor board 3, it can be connected to the inductor board 3 by spot soldering, thereby providing protection for the accuracy and stability of the threaded connection of the copper column 41 in the patch nut. The application of spot soldering technology reduces the error caused by human operation, improves the quality and consistency of the product, shortens the assembly time of the product, and improves the production efficiency.

[0039] It should be noted that the main board 1, the drive board 2 and the inductor board 3 in the embodiment are PCB boards themselves, and the connection port of the inductor 30 is electrically connected to the conductive column two 40 through the wires in the PCB board.

[0040] Preferably, as shown in Figures 1 to 3 After being connected to the two sides of the inductor 30 by soldering, the connection port of the inductor 30 is electrically connected to the conductive column two 40 (i.e. patch nut) through the wires in the PCB board (not shown in the figure), and at the same time, the electrical connection between the copper column 41 and the main board 1 can also be realized, and these wires can be the wires in the PCB board to ensure the stability and reliability of signal transmission. It is also because of the use of the conductive column one 20 and the conductive column two 40 (i.e. the above-mentioned conductive column assembly 4) that the connection between the inductor 30 and the drive board 2 and the main board 1 is more simple and efficient, which saves the overall space structure of the inverter and also provides protection for the reliability and safety during connection.

[0041] Further, as shown in Figures 1 to 3As shown, the embodiment also has a connecting hole 410 at the top end of the copper column 41, and a through hole 10 is formed on the mainboard 1, when the copper column 41 extends and abuts against the bottom wall of the mainboard 1, at this time, the connecting hole 410 is aligned and communicated with the through hole 10, and the worker can fix the mainboard 1 on the conductive column 20 through the fixing part, so as to ensure the firmness when the two are connected. It should be noted that the connecting hole 410 in the embodiment can be a threaded hole, and the fixing part can be replaced by other connecting parts such as screws.

[0042] It should be particularly pointed out that the conductive column 20 and the conductive column 40 in the embodiment refer to components that can not only conduct electricity but also provide certain support, including but not limited to patch nuts or copper columns 41, and any other components that can perform the above functions should be considered as conductive columns 20 or conductive columns 40 or equivalent technical features.

[0043] It should be noted that the inverter inductor assembly 5 and the boost inductor assembly 6 in the embodiment are conventional components used in inverters, and their working principles and structures will not be described in detail here. Embodiment two:

[0044] The embodiment provides a photovoltaic inverter, which is provided with the inductor connecting structure in the embodiment one, and further comprises a transformer 7, the transformer 7 is installed on the inductor plate, and the transformer 7 is electrically connected with the driving plate through the inductor plate. This scheme effectively simplifies the connection mode between the transformer 7 and the driving plate, greatly reduces the internal space occupation, makes the overall volume of the inverter more compact, and reduces the material cost and assembly difficulty.

[0045] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiment of the utility model are only used to explain the relative position relationship, movement condition and the like between components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directional indications also change accordingly.

[0046] In addition, in the utility model, the description such as "first", "second", "one" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0047] In the utility model, unless another definite provision and limitation, the term "connect", "fix" and so on should do the broad sense understanding, for example, "fix" can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two element inside's intercommunication or two element's mutual action relation, unless another definite limitation.For the ordinary skill in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.

[0048] In addition, the technical solutions of various embodiments of the present application can be combined with each other, but must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the present application.

Claims

1. An inductance connection structure applied to a photovoltaic inverter, characterized by, The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly.

2. The inductance connection structure for a photovoltaic inverter according to claim 1, characterized by, The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly.

3. The inductance connection structure for a photovoltaic inverter according to claim 1, wherein The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly.

4. The inductance connection structure for a photovoltaic inverter according to claim 1, wherein The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly.

5. The inductance connection structure for a photovoltaic inverter according to any one of claims 1 to 4, characterized in that, The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly.

6. The inductance connection structure for a photovoltaic inverter according to claim 2, wherein The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly.

7. The inductance connection structure for a photovoltaic inverter according to claim 5, wherein The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly.

8. The inductance connection structure for a photovoltaic inverter according to claim 5, wherein The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly.

9. The inductance connection structure for a photovoltaic inverter according to claim 5, wherein The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly.

10. A photovoltaic inverter, characterized by The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. The utility model relates to an inductance connecting structure of a power supply, which comprises a main board, a driving board, an inductance board, an inverter inductance assembly and a boost inductance assembly. 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