A photovoltaic inverter cable assembly structure

Abstract

The utility model relates to a photovoltaic inverter cable assembly structure, wherein the photovoltaic inverter includes a housing, a circuit board and a plurality of cables, wherein the circuit board is fixed to the inner side of the housing, one end of the plurality of cables is electrically connected and fixed to the circuit board, a plug connector is provided at the other end of the cable, a plurality of plug holes are provided on the housing, and the plug connector is fixed in the plug hole, wherein a plurality of through holes are provided on the surface of the circuit board, and the plug connector at the other end of the cable passes through the through holes and is fixed in the plug hole. The application improves the cable assembly efficiency and saves labor costs and material costs at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic inverter equipment, in particular to a photovoltaic inverter cable assembly structure. Background Art

[0002] The architecture design of the string inverter is to connect multiple photovoltaic strings together, and each photovoltaic string has an independent maximum power point tracking (MPPT) device. Each photovoltaic string is connected to the inverter through an independent DC input, and then the inverter converts it into AC output. Therefore, there are many cables on the input side of the string inverter, which makes the assembly complicated. At present, in traditional technology, most of them are connected to the white terminal at the end of the cable, and then the white terminal is inserted into the circuit board, and the DC input harness of the photovoltaic string is connected to the circuit board; or a saddle terminal is set on the circuit board, the cable end is set as a PIN pin, and then the PIN pin is inserted into the saddle terminal, and the DC input harness of the photovoltaic string is connected to the circuit board. In this process, many terminals need to be set, and they need to be installed manually, which costs a lot of materials and labor costs. Utility Model Content

[0003] A main purpose of the present invention is to overcome at least one of the above-mentioned defects, and to provide a photovoltaic inverter cable assembly structure, which improves the cable assembly efficiency and saves labor costs and material costs.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The utility model provides a photovoltaic inverter cable assembly structure, wherein the photovoltaic inverter comprises a shell, a circuit board and a plurality of cables, wherein the circuit board is fixed on the inner side of the shell, one end of the plurality of cables is electrically connected and fixed to the circuit board, and a plug connector is arranged at the other end of the cable, and a plurality of plug holes are opened on the shell, wherein the plug connector is fixed in the plug hole, wherein:

[0006] A plurality of through holes are opened on the surface of the circuit board, and the plug connector at the other end of the cable passes through the through holes and is fixed in the plug connector hole.

[0007] According to one embodiment of the utility model, the plurality of cables include a plurality of distribution cables, one end of each distribution cable is fixedly connected to the circuit board and passes through the surface of the circuit board, a plug connector is provided at the passing portion, and the other end of each distribution cable is connected to a DC switch.

[0008] According to one embodiment of the present utility model, the DC switch is fixed in the housing.

[0009] According to one embodiment of the present invention, the plurality of cables include a plurality of DC cables, both ends of each DC cable are fixedly connected to the circuit board and pass through the surface of the circuit board, and a plug connector is provided at the passing portion.

[0010] According to one embodiment of the utility model, the plug connector includes a conductive inner core and an external plug, the cable passes through the surface of the circuit board and partially exposes the internal copper wire, the conductive inner core is coated on the outside of the copper wire and is conductively connected to the copper wire, the external plug is fixed in the plug hole, and the conductive inner core is fixed inside the external plug.

[0011] According to one embodiment of the present invention, the through holes on the circuit board are arranged in one-to-one correspondence with the plug-in holes on the housing.

[0012] Compared with the prior art, the advantages and beneficial effects of the photovoltaic inverter cable assembly structure of the utility model patent application are:

[0013] This application optimizes the cable assembly structure, making the assembly process simpler. Compared with the traditional white terminal or saddle terminal on the board solution, it can save the trouble of plugging and the labor time of manual screwing, can improve the efficiency by about 30%, and can effectively save material costs and labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of electrical connection of a photovoltaic inverter cable assembly structure according to an embodiment of the utility model;

[0016] Figure 2 for Figure 1 A partial enlarged schematic diagram of a photovoltaic inverter cable assembly structure is shown;

[0017] Figure 3 It is a rear view of a photovoltaic inverter cable assembly structure according to an embodiment of the utility model, used to illustrate the arrangement structure between the plug connector and the plug hole outside the shell.

[0018] The reference numerals are as follows:

[0019] 1. Shell, 11. Plug hole, 2. Circuit board, 21. Through hole on the circuit board, 31. Power distribution cable, 32. DC cable, 4. DC switch, 5. Plug connector, 51. Conductive inner core, 52. External plug. DETAILED DESCRIPTION

[0020] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] This embodiment describes a photovoltaic inverter cable assembly structure, wherein, Figures 1 to 3 As shown, the photovoltaic inverter includes a shell 1, a circuit board 2 and a plurality of cables, wherein the circuit board 2 is fixed on the inner side of the shell 1, and one end of the plurality of cables is electrically connected to and fixed to the circuit board 2. This process usually adopts welding to complete the electrical connection between the cable and the circuit board 2 while fixing, and a plug connector 5 is provided at the other end of the cable, and a plurality of plug holes 11 are opened on the shell 1, and the plug connector 5 is fixed in the plug hole 11, wherein a plurality of through holes 21 are opened on the surface of the circuit board 2, and the plug connector 5 at the other end of the cable passes through the through hole 21 and is fixed in the plug hole 11.

[0023] That is to say, the other end of each cable is directly passed through the preset through holes 21 on the surface of the circuit board 2 and inserted into the corresponding plug-in hole 11 to complete the cable assembly. Compared with traditional technology, there is no need to set up additional white terminals or saddle terminals, which can effectively save labor costs and materials.

[0024] In a further embodiment, in order to facilitate assembly so that the other end of the cable can be inserted into the corresponding plug hole 11 after being inserted into the through hole 21 on the circuit board 2, the through hole 21 on the circuit board 2 and the plug hole 11 on the housing 1 can be arranged one by one.

[0025] There are two main types of cables in the photovoltaic inverter, one is the distribution cable 31, and the other is the DC cable 32. The DC cable 32 is used to connect the PV output harness of the external photovoltaic string.

[0026] The plug connector 5 includes a conductive inner core 51 and an external plug 52. The cable passes through the surface of the circuit board 2 and partially exposes the internal copper wire. The conductive inner core 51 is coated on the outside of the copper wire and is conductively connected to the copper wire. The external plug 52 is fixed in the plug hole 11, and the conductive inner core 51 is fixed inside the external plug 52.

[0027] In one embodiment, the plurality of cables include a plurality of distribution cables 31, one end of each distribution cable 31 is fixedly connected to the circuit board 2 and passes through the surface of the circuit board 2, a plug connector 5 is provided at the passing portion, and the other end of each distribution cable 31 is connected to a DC switch 4, and the DC switch 4 is fixed in the housing 1.

[0028] In one embodiment, the plurality of cables include a plurality of DC cables 32 , both ends of each DC cable 32 are fixedly connected to the circuit board 2 and pass through the surface of the circuit board 2 , and a plug connector 5 is provided at the passing portion.

[0029] In summary, the present application optimizes the cable assembly structure, making the assembly process simpler. Compared with the traditional white terminal or saddle terminal on the board solution, it can save the trouble of plugging and the labor time of manual screwing, which can improve the efficiency by about 30%, and can effectively save material costs and labor costs.

[0030] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A photovoltaic inverter cable assembly structure, characterized in that: The photovoltaic inverter comprises a housing (1), a circuit board (2), and a plurality of cables, wherein the circuit board (2) is fixed inside the housing (1), one end of the plurality of cables is electrically connected to and fixed to the circuit board (2), and the other end of the cables is provided with a plug connector (5), the housing (1) is provided with a plurality of plug holes (11), and the plug connector (5) is fixed in the plug hole (11), wherein: A plurality of through holes (21) are provided on the surface of the circuit board (2), and the plug connector (5) at the other end of the cable passes through the through hole (21) and is fixed in the plug hole (11).

2. The photovoltaic inverter cable assembly structure according to claim 1, characterized in that: The plurality of cables include a plurality of distribution cables (31), one end of each distribution cable (31) being fixedly connected to the circuit board (2) and passing through a surface of the circuit board (2), a plug connector (5) being provided at the passing portion, and the other end of each distribution cable (31) being connected to a DC switch (4).

3. The photovoltaic inverter cable assembly structure according to claim 2, characterized in that: The DC switch (4) is fixed in the housing (1).

4. The photovoltaic inverter cable assembly structure according to claim 1, characterized in that: The plurality of cables include a plurality of DC cables (32), both ends of each DC cable (32) being fixedly connected to the circuit board (2) and passing through the surface of the circuit board (2), and a plug connector (5) being provided at the passing portion.

5. The photovoltaic inverter cable assembly structure according to any one of claims 1 to 4, characterized in that: The plug connector (5) comprises a conductive inner core (51) and an external plug (52); a portion of the internal copper wire of the cable passing through the surface of the circuit board (2) is exposed; the conductive inner core (51) is coated on the outside of the copper wire and is conductively connected to the copper wire; the external plug (52) is fixed in the plug hole (11); and the conductive inner core (51) is fixed inside the external plug (52).

6. The photovoltaic inverter cable assembly structure according to any one of claims 1 to 4, characterized in that: The through holes (21) on the circuit board (2) and the plug holes (11) on the housing (1) are arranged in a one-to-one correspondence.

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