Inductor module and photovoltaic inverter

Abstract

The utility model discloses an inductor module and a photovoltaic inverter, and the inductor module comprises an inductor which is arranged on a radiator of power equipment or is adjacent to the radiator, a wiring terminal which is electrically connected with a circuit board of the power equipment, and a supporting frame which is used for supporting the wiring terminal. The number of the supporting frames is multiple, and the supporting frames are located in the box body of the power equipment and located between the circuit board and the inner wall of the box body. The inductor module provided by the utility model is relatively convenient to use.

Description

Technical Field

[0001] The utility model belongs to the field of photovoltaic inverters, and specifically relates to an inductor module and a photovoltaic inverter. Background Art

[0002] In the field of inverters, the routing and wiring of inductors has always been a critical issue. Messy routing not only takes up most of the space inside the machine, but also has an adverse effect on product assembly.

[0003] In order to solve the above problems, the existing design installs the inductor wiring board under the circuit board, but the volume of the inductor wiring board is large, and the number of wiring terminals on the inductor wiring board is fixed. When the number of inductors is large, the wiring terminals may be insufficient, affecting the use; when the number of inductors is small, the wiring terminals may be wasted, increasing the material cost, and the inductor wiring board occupies a large space at this time, and the space utilization rate is low, that is, the existing design cannot be flexibly adjusted according to the actual situation, and is not very convenient to use. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an improved inductor module and photovoltaic inverter, which are more convenient to use.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An inductor module includes an inductor configured to be arranged on a heat sink of an electric device or adjacent to the heat sink, a terminal for electrically connecting to a circuit board of the electric device, and a support frame for supporting the terminal. The number of the support frames is multiple and the support frames are located in a box of the electric device and between the circuit board and the inner wall of the box.

[0007] Preferably, the support frame is removably arranged in the box body, and the number of the support frames can be flexibly adjusted, which is convenient to use.

[0008] Preferably, the box body is provided with a first threading hole, the support frame is provided with a second threading hole, and the connecting wire of the inductor passes through the first threading hole and the second threading hole in sequence and is connected to the wiring terminal.

[0009] More preferably, the terminal block has a conducting port for electrically connecting to a circuit board, and the conducting port includes a conductive column or a conductive groove; the inductor module also includes an insulating member, and the insulating member is located between the circuit board and the support frame to isolate the portion of the terminal block other than the conducting port from the circuit board.

[0010] Preferably, the circuit board and the wiring terminal are fixedly connected by fasteners; the inductor module comprises a patch nut, and the lower surface of the patch nut is in contact with the upper surface of the conduction port.

[0011] Preferably, the insulating member comprises insulating paper, and the insulating paper is fixedly connected to the supporting frame.

[0012] Preferably, the insulating paper has a bending portion, and the bending portion is fixedly connected to the support frame via adhesive.

[0013] More preferably, the area of ​​the first threading hole is larger than the projection area of ​​the connecting wire of the inductor in the horizontal direction, so that the connecting wire can pass through the first threading hole smoothly.

[0014] Preferably, the support frame is made of plastic.

[0015] The utility model also adopts the following technical solutions:

[0016] A photovoltaic inverter comprises a box and a circuit board arranged in the box. The photovoltaic inverter also comprises the above-mentioned inductor module, and the inductor module is arranged between the circuit board and the inner wall of the box.

[0017] The utility model adopts the above solution, which has the following advantages compared with the prior art:

[0018] In the inductor module of the utility model, the connecting wire of the inductor is crimped on the wiring terminal, and the wiring terminal is connected to the circuit board to realize the connection between the inductor and the circuit board, wherein the number of the wiring terminals is multiple and can be flexibly adjusted according to the number of inductors in actual application, which is convenient to use. In addition, the support frame is arranged between the circuit board and the inner wall of the box, which improves the aesthetics of the internal layout of the product and the space utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 is a cross-sectional view of an inductor module according to an embodiment of the utility model;

[0021] Figure 2 is a schematic diagram of an inductor module according to an embodiment of the utility model;

[0022] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0023] Figure 4 It is a three-dimensional diagram of a support frame according to an embodiment of the utility model.

[0024] in,

[0025] 100, photovoltaic inverter; 101, box; 1011, inner wall; 102, circuit board; 103, inductor box; 104, inductor; 105, connecting wire;

[0026] 1. Support frame; 11. Buckle; 12. Blind hole; 13. Wiring terminal; 131. Conducting port;

[0027] 2. First threading hole; 3. Insulation paper; 4. Fastener; 5. SMD nut; 6. Second threading hole. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] Reference Figures 1 to 4 As shown, this embodiment provides a photovoltaic inverter, including a box 101, a circuit board 102 and an inductor module arranged in the box 101, wherein the inductor module is arranged between the circuit board 102 and the inner wall 1011 of the box 101. The inductor module includes an inductor 104, and an inductor box 103 is locked below the box 101, and an inductor box 103 has an indefinite number of inductors 104 inside. The wiring of the inductor 104 is carried out under the circuit board 102, which improves the internal layout aesthetics and space utilization of the product, reduces the machine's external dimensions, and optimizes the wiring effect of the whole machine.

[0030] Furthermore, the inductor 104 is arranged on or near the heat sink of the power device to facilitate heat dissipation. The inductor module also includes a terminal 13 for electrically connecting to the circuit board 102 of the power device, a support frame 1 for supporting the terminal 13, an insulating member and a patch nut.

[0031] Further, the terminal 13 has a conduction port 131 for electrically connecting to the circuit board 102, and the conduction port 131 includes a conductive column or a conductive groove, specifically a conductive column in this embodiment; the insulating member is located between the circuit board 102 and the support frame 1 to isolate the portion of the terminal 13 other than the conduction port 131 from the circuit board 102. Furthermore, the insulating member is specifically an insulating paper 3, and the insulating paper 3 is arranged between the circuit board 102 and the support frame 1 to play a good isolation and protection role. The insulating paper 3 is fixedly connected to the support frame 1 through the adhesive backing. Specifically, the insulating paper 3 has a bending portion (not shown in the figure), that is, the left and right sides of the insulating paper 3 are bent and the adhesive backing is applied at the bending portion. After the adhesive backing is applied, it is bonded to the two side edges of the left and right directions of the support frame 1, and the insulating paper 3 and the support frame 1 are fixedly connected, which is convenient to operate.

[0032] There are multiple support frames 1, and the support frames 1 are located in the box 101 and between the circuit board 102 and the inner wall 1011 of the box 101. Figure 2 As shown, the support frame 1 is relatively small in size, and the support frame 1 can be removably arranged in the box 101, and the number of the support frames 1 can be set according to the number of inductors. When more inductors are needed, the number of the support frames 1 can be increased, and when fewer inductors are needed, the number of the support frames 1 can be reduced.

[0033] The support frame 1 is made of plastic, which has excellent insulation and heat resistance. Figure 4 As shown, the support frame 1 and the box body 101 are fixedly connected by fasteners 4 and adhesive materials. Specifically in this embodiment, the fasteners 4 are pressure riveted screws, and the adhesive material is adhesive. The support frame 1 is provided with a blind hole 12. When the support frame 1 is installed on the box body 101, the bottom of the support frame 1 is firstly coated with adhesive except for the position of the blind hole 12, and fixed to the inner wall 1011 of the box body 101.

[0034] Each support frame 1 is provided with a blind hole 12, and the position of the blind hole 12 matches the position of the rivet screw on the box body 101. The diameter and depth of the blind hole 12 need to be slightly larger than the outer diameter and height of the rivet screw. When in use, the tail end of the rivet screw is inserted into the blind hole 12 by stamping or other extrusion methods, which improves the firmness and reliability of the connection between the support frame 1 and the box body 101 and simplifies the installation process. In other embodiments, the support frame and the box body can also be fixedly connected only by fasteners without using adhesive, and the support frame can be removably arranged in the box body.

[0035] Combination Figures 2 to 4 As shown, each support frame 1 is provided with a buckle 11, and the number of the connection terminals 13 corresponds to the number of the buckles 11. The connection terminals 13 are provided with a slot 14, and the buckle 11 is inserted into the slot 14 to fix the connection terminals 13.

[0036] Furthermore, the box 101 of the photovoltaic inverter is provided with a first threading hole 2, and the support frame 1 is provided with a second threading hole 6. The connecting wire 105 of the inductor 104 passes through the first threading hole 2 and the second threading hole 6 in sequence and is connected to the wiring terminal 13, and the wiring terminal 13 is electrically connected to the circuit board 102. Among them, one end of the wiring terminal 13 of the support frame 1 is far away from the first threading hole 2, and one end of the second threading hole 6 of the support frame 1 is arranged close to the first threading hole 2, which can save the length of the connecting wire 105, save costs, and facilitate workers to operate. Moreover, since the distance between the first threading hole 2 and the second threading hole 6 is short, the connecting wire 105 does not need additional fixing, which shortens the working hours and improves the work efficiency. It should be noted that the area of ​​the first threading hole 2 needs to be larger than the projection area of ​​the connecting wire 105 of the inductor in the horizontal direction, so that the connecting wire 105 can pass through the first threading hole 2 smoothly and is not easy to scratch the hole wall.

[0037] The circuit board 102 and the terminal 13 of this embodiment are fixedly connected by a fastener, which is specifically a screw. During operation, the patch nut 5 must be welded at the hole position on the back of the circuit board 102. The patch nut 5 has a through hole inside to facilitate the screw to pass through. The terminal 13 has an internal thread that matches the screw. The screw passes through the through hole of the patch nut 5 and is locked together with the internal thread of the terminal 13. At this time, the lower surface of the patch nut 5 and the upper surface of the conduction port 131 are in surface contact, forming a stable connection. The "upper surface" refers to Figure 2 The relative position relationship of each component is shown in FIG. Further, the terminal 13 and the patch nut 5 need to have good conductivity. The material of the terminal and the patch nut of this embodiment is specifically copper or copper alloy. Furthermore, the contact surface of the terminal 13 and the patch nut 5 needs to ensure a roughness of Ra1.6 and a flatness of 0.1.

[0038] The working principle of the inductor module of this embodiment is as follows:

[0039] First, the number of support frames 1 or terminal blocks 13 to be used is determined according to the number of inductors. Secondly, a predetermined number of support frames are fixed on the inner wall 1011 of the box 101 by applying adhesive, and then the support frame 1 is further fixed by pressing the rivet screws into the blind hole 12. The terminal block 13 is fixed to the support frame 1 by the buckle 11, and the connecting wire 105 of the inductor is crimped to the terminal block 13 after passing through the first threading hole 2 and the second threading hole 6. The patch nut 5 is welded at the opening position on the back of the circuit board 102, and the screw passes through the patch nut 5 and is threadedly connected with the internal thread of the terminal block 13. The lower surface of the patch nut 5 contacts the upper surface of the conduction port 131 to form a stable connection. Finally, the two sides of the insulating paper 3 are bent and fixedly connected to the two sides of the support frame 1 through the adhesive. The insulating paper 3 is arranged between the circuit board 102 and the support frame 1 to play a better isolation and protection role.

[0040] The inductor module of this embodiment has at least the following advantages:

[0041] (1) The number and layout of the support frame 1 and the wiring terminals 13 can be flexibly controlled, the use is convenient, the structure is simple, and the wiring is convenient;

[0042] (2) Avoiding the flying wires of the inductor, improving the space utilization, and ensuring the beautiful layout of the product;

[0043] (3) The length of the inductor line is shortened, which reduces the material cost of the product to a certain extent;

[0044] (4) It facilitates workers' operation, shortens working hours, improves efficiency, and reduces the labor cost of production.

[0045] As shown in this specification and claims, the terms "comprises" and "include" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements. The term "and / or" as used herein includes any combination of one or more of the relevant listed items.

[0046] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, etc. used in the present invention are only relative to the relative positional relationship of the components of the present invention in the accompanying drawings.

[0047] The above embodiment is only for illustrating the technical concept and features of the utility model, and is a preferred embodiment. Its purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and it cannot be used to limit the protection scope of the utility model. Any equivalent transformation or modification made according to the principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An inductor module, characterized in that: It includes an inductor configured to be set on or adjacent to the heat sink of the electric equipment, a terminal for electrically connecting to the circuit board of the electric equipment, and a support frame for supporting the terminal. There are multiple support frames, and the support frames are located in the box of the electric equipment and between the circuit board and the inner wall of the box.

2. The inductor module according to claim 1, characterized in that: The support frame is movably arranged in the box.

3. The inductor module according to claim 1, characterized in that: The box body is provided with a first threading hole, the support frame is provided with a second threading hole, and the connecting wire of the inductor passes through the first threading hole and the second threading hole in sequence and is connected to the connection terminal.

4. The inductor module according to claim 1, characterized in that: The connection terminal has a conducting port for electrically connecting to a circuit board, and the conducting port includes a conductive column or a conductive groove; the inductor module also includes an insulating member, and the insulating member is located between the circuit board and the support frame to isolate the part of the connection terminal except the conducting port from the circuit board.

5. The inductor module according to claim 4, characterized in that: The circuit board and the connection terminal are fixedly connected by fasteners; the inductor module includes a patch nut, and the lower surface of the patch nut is in contact with the upper surface of the conduction port.

6. The inductor module according to claim 4, characterized in that: The insulating member comprises insulating paper, and the insulating paper is fixedly connected to the supporting frame.

7. The inductor module according to claim 6, characterized in that: The insulating paper has a bending portion, and the bending portion is fixedly connected to the support frame through adhesive.

8. The inductor module according to claim 3, characterized in that: The area of ​​the first threading hole is larger than the projection area of ​​the connecting wire of the inductor in the horizontal direction.

9. The inductor module according to claim 1, characterized in that: The support frame is made of plastic.

10. A photovoltaic inverter, comprising a box and a circuit board arranged in the box, characterized in that: The photovoltaic inverter further comprises an inductor module as claimed in any one of claims 1 to 9, wherein the inductor module is arranged between the circuit board and the inner wall of the box.

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