CN219917697U - Single current-carrying connector and grid-connected system - Google Patents
Single current-carrying connector and grid-connected system Download PDFInfo
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- CN219917697U CN219917697U CN202320957337.6U CN202320957337U CN219917697U CN 219917697 U CN219917697 U CN 219917697U CN 202320957337 U CN202320957337 U CN 202320957337U CN 219917697 U CN219917697 U CN 219917697U
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- grid
- single current
- shell
- carrying connector
- connected system
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- 229910052802 copper Inorganic materials 0.000 claims abstract description 37
- 239000010949 copper Substances 0.000 claims abstract description 37
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000003292 glue Substances 0.000 claims description 13
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000004078 waterproofing Methods 0.000 claims description 2
- 238000010248 power generation Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- UFNIBRDIUNVOMX-UHFFFAOYSA-N 2,4'-dichlorobiphenyl Chemical compound C1=CC(Cl)=CC=C1C1=CC=CC=C1Cl UFNIBRDIUNVOMX-UHFFFAOYSA-N 0.000 description 3
- 238000010292 electrical insulation Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model discloses a single current-carrying connector and a grid-connected system, and relates to the technical field of photovoltaic power generation. The single current carrying connector includes: a rubber shell; the mounting hole is formed on the rubber shell and is used for being connected with the box body shell of the grid-connected system through the connecting piece; the copper bar is integrated in the rubber shell with the wire rod and is electrically connected to a PCB (printed circuit board) in the box shell of the grid-connected system through the wire rod. The grid-connected system comprises: at least one single current carrying connector; the box body shell is used for fixing a single current-carrying connector; the PCB is positioned inside the box body shell and is electrically connected with the copper bars through wires. According to the scheme, when the grid-connected function is realized, the structure is simple, and the use is flexible.
Description
Technical Field
The utility model relates to the technical field of electrical equipment, in particular to a single current-carrying connector and a grid-connected system.
Background
In grid-connected systems, the inverter needs to be externally grid-connected via a connector.
The current large-current connector for grid-connected wiring outside the whole machine is designed in such a way that a plurality of wiring terminals are synthesized in a large-size plastic shell, and the large-current connector is usually in different external sizes such as 3pole and 4pole, and can be connected with PCBA inside the machine only by locking in an additional power line.
However, in the above scheme, the external size and the pole number of the high-current connector are fixed, which is not flexible in the practical use process.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is to overcome the defects that the external size model and pole number of the high-current connector in the prior art are fixed and are not flexible enough in the actual use process, so that a single current-carrying connector and a grid-connected system are provided.
To this end, in one aspect, the utility model provides a single current carrying connector comprising:
a rubber shell;
the mounting hole is formed on the rubber shell and is used for being connected with the box body shell of the grid-connected system through a connecting piece;
the copper bar is electrically connected with the wire rod, the copper bar and the wire rod are integrated in the rubber shell, and the copper bar is electrically connected to a PCB (printed circuit board) in a box shell of the grid-connected system through the wire rod.
Preferably, in the single current-carrying connector, the connecting piece is a fixing screw, and the fixing screw is in threaded connection with the mounting hole.
Preferably, in the single current-carrying connector, glue is applied between the copper bar and the glue shell, so as to prevent water between the copper bar and the glue shell.
Preferably, the single current-carrying connector further comprises a waterproof rubber ring;
the waterproof rubber ring is fixed between the rubber shell and the box body shell of the grid-connected system and used for waterproof between the rubber shell and the box body shell of the grid-connected system.
Preferably, the single current-carrying connector further comprises an insulating spacer;
and the rubber shell is provided with a mounting groove in a forming mode, and the mounting groove is used for mounting the insulating partition plate.
In yet another aspect, the present utility model provides a grid-tie system, comprising:
at least one of the single current carrying connectors described above;
a housing shell for securing the single current carrying connector;
and the PCB is positioned inside the box body shell and is electrically connected with the copper bar through the wire rods.
Preferably, in the grid-connected system, a wiring terminal is disposed on the PCB board, and the wiring terminal is electrically connected with the wire.
Preferably, in the grid-connected system, a wiring hole is formed in the side surface of the box body, and the wire rod penetrates through the wiring hole to be connected to the PCB.
The technical scheme provided by the utility model has the following advantages:
1. compared with a high-current connector, the single current carrier provided by the utility model is miniaturized and light-weight, can be flexibly configured in a grid-connected system, and can be used alone or in combination; by arranging the mounting holes, the mounting is more convenient; the number of single current-carrying connectors and the positions of the mounting holes are selected, so that the application of different scenes can be met; by integrating the wires with the copper bars, the extra wiring terminals required in high current connectors are omitted, the reliability of the connection is increased and the material cost is saved.
2. According to the grid-connected system, the single current-carrying connectors are arranged, so that the number and the installation positions of the single current-carrying connectors can be selected according to actual requirements when the grid-connected system achieves a grid-connected function, and the application of inverters in the grid-connected system in different application scenes is met.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a single current-carrying connector provided in embodiment 1 of the present utility model.
Fig. 2 is a schematic diagram of the assembled single current carrying connector of fig. 1.
Fig. 3 is a schematic structural diagram of a grid-connected system provided in embodiment 6 of the present utility model.
Reference numerals illustrate:
1-copper bars;
2-a rubber shell; 21-mounting holes; 22-mounting slots;
3-waterproof rubber rings;
4-insulating spacers;
5-fixing screws;
6-wire;
7-a box body shell;
8-PCB board.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Example 1
The photovoltaic power generation system is a system for converting light energy into electric energy by utilizing solar energy and mainly comprises photovoltaic cells. A photovoltaic cell is a semiconductor device capable of converting sunlight into electrical energy. An inverter is a device that converts direct current generated by a photovoltaic cell into alternating current. The grid-connected photovoltaic power generation system (grid-connected system) is a photovoltaic power generation system which converts a photovoltaic cell into alternating current through an inverter and is connected with a power grid, and the inverter can connect electric energy generated by the photovoltaic cell with the power grid to realize the grid-connected function of the grid-connected photovoltaic power generation system.
When the grid-connected function of the grid-connected system is realized, a grid connection device is needed to connect the grid-connected system with a power grid. Currently, high current connectors incorporating multiple terminals in a large size plastic housing are used as grid connection devices in combination with additional power lines and terminals. The large-current connector occupies a large space, the required additional power lines and wiring terminals increase the cost, and the large-current connector has a fixed size and the number of electrodes (pole), so that the large-current connector is not flexible enough and has poor adaptability in practical application. Therefore, a simpler and more flexible power grid connection device is needed to realize the power grid connection function of the grid-connected system.
Thus, the present embodiment provides a single current carrying connector, as shown in fig. 1, comprising a glue housing 2, mounting holes 21 and copper bars 1;
as shown in fig. 1, a mounting hole 21 is formed on the rubber housing 2, and the mounting hole 21 is used for being connected with the box housing 7 of the grid-connected system through a connecting piece;
as shown in fig. 1, the copper bar 1 is electrically connected with the wire 6, the copper bar 1 and the wire 6 are integrated in the rubber case 2, and the copper bar 1 is used for being electrically connected to a PCB board 8 in a case housing 7 of the grid-connected system through the wire 6.
It should be noted that the box housing 7 of the grid-connected system is a box housing of an inverter in the grid-connected system.
By providing mounting holes 21 in the glue housing 2, a single current carrying connector can be secured to the cabinet housing of the grid-tie system in combination with a connector. Optionally, the connecting piece is connected with the box body shell of the grid-connected system through gluing or electric welding, and when in installation, the connecting piece passes through the installation hole 21 and then is glued or electric welded; optionally, the connector may be in a structure capable of interlocking with the enclosure of the grid-tie system, and when installed, the connector is inserted through the mounting hole 21 and locked with a corresponding structure on the enclosure of the grid-tie system to fix the single current-carrying connector to the enclosure of the grid-tie system.
Optionally, two mounting holes 21 are provided to further strengthen the connection of the single current carrying connector to the housing shell.
One end of the wire 6 is integrated with the copper bar 1 in the glue shell 2, and the other end of the wire 6 is connected to a PCB 8 in a box shell 7 of the grid-connected system. In practical application, the electric wire at the power grid side is connected with the copper bar 1 of the single current-carrying connector, so that the power grid can be connected with a grid-connected system, and the grid-connected function is realized.
Compared with a high-current connector, the single current-carrying connector is miniaturized and light-weight, can be flexibly configured in a grid-connected system, and can be used alone or in combination; by arranging the mounting holes, the mounting is more convenient; the number of single current-carrying connectors and the positions of the mounting holes are selected, so that the application of different scenes can be met; by integrating the wires with the copper bars, the extra wiring terminals required in high current connectors are omitted, the reliability of the connection is increased and the material cost is saved.
Example 2
The present embodiment provides a single current-carrying connector which differs from the single current-carrying connector provided in embodiment 1 only in that: the connecting piece is a fixing screw 5, and the fixing screw 5 is in threaded connection with the mounting hole 21.
The mounting screws 5 are passed through the mounting holes 21 and tightened onto the openings of the box housing of the grid-tie system to secure the single current carrying connector to the box housing of the grid-tie system.
Alternatively, two mounting holes 21 are provided, and two fixing screws 5 are respectively inserted through the two mounting holes 21 and respectively fastened to the openings of the two box shells of the grid-connected system. By providing two mounting holes 21, not only the connection of the individual current-carrying connectors and the housing shell can be further reinforced, but also the mounting angle of the individual current-carrying connectors can be fixed. If there is only one mounting hole 21, a single current-carrying connector may be angularly deflected about the fixing screw 5 when the fixing screw is loosened, whereas no angular deflection occurs when two mounting holes 21 are provided.
Above-mentioned single current-carrying connector through setting up the set screw for single current-carrying connector is more firm with the connection of grid-connected system's box shell, and then has improved the stability of being connected between copper bar and the PCB board.
Example 3
The present embodiment provides a single current-carrying connector which differs from the single current-carrying connector provided in embodiment 1 or embodiment 2 only in that: and glue is applied between the copper bar 1 and the glue shell 2, and the glue is used for waterproofing between the copper bar 1 and the glue shell 2.
During installation, the copper bar 1 and the wire 6 are integrated in the rubber shell 2, and then the rubber is applied between the copper bar 1 and the rubber shell 2.
According to the single current-carrying connector, the waterproof performance between the copper bar and the rubber shell is improved by gluing the copper bar and the rubber shell, so that the single current-carrying connector meets the IP (IngressSPROTECTION) waterproof requirement, and the safety of electric connection between the copper bar and the PCB is improved.
Example 4
The present embodiment provides a single current-carrying connector which differs from the single current-carrying connector provided in embodiment 1 or embodiment 2 or embodiment 3 only in that: the single current-carrying connector also comprises a waterproof rubber ring 3;
the waterproof rubber ring 3 is fixed between the rubber shell 2 and the box body shell of the grid-connected system and used for waterproof between the rubber shell 2 and the box body shell of the grid-connected system.
During installation, the copper bar 1 and the wire 6 are integrated in the rubber shell 2, the waterproof rubber ring 3 is placed between the rubber shell 2 and the box body outer shell of the grid-connected system, and the rubber shell 2 is fixed on the box body outer shell of the grid-connected system.
According to the single current-carrying connector, the waterproof rubber ring is arranged between the rubber shell and the box body shell of the grid-connected system, so that waterproof protection between the box body shell of the grid-connected system and the single current-carrying connector is guaranteed, and the safety of electric connection between the copper bars and the PCB is improved.
Example 5
The present embodiment provides a single current-carrying connector which differs from the single current-carrying connector provided in any one of embodiments 1 to 4 only in that: the single current carrying connector further comprises an insulating spacer 4;
the rubber shell 2 is provided with a mounting groove 22, and the mounting groove 22 is used for mounting the insulating partition 4.
The insulating spacer 4 is formed with a structure to be fitted with the mounting groove 22, so that the insulating spacer 4 can be fitted with the mounting groove 22 to mount the insulating spacer 4 on the rubber housing 2. The insulating barrier 4 may provide electrical insulation for the grid-side wires when they are connected to the copper bars 1 of the single current carrying connector.
Alternatively, the rubber housing 2 is formed with mounting grooves 22 on both sides, which can cooperate with two insulating spacers 4 to provide electrical insulation for both sides of a single current carrying connector.
An alternative single current carrying connector assembly process of this embodiment is: the copper bar 1 and the wire 6 are integrated in the rubber shell 2, then the rubber is applied between the copper bar 1 and the rubber shell 2, then the waterproof rubber ring 3 is placed between the rubber shell 2 and the box shell of the grid-connected system, the fixing screw 5 penetrates through the mounting hole 21 and is fastened to the opening of the box shell of the grid-connected system, and finally the insulating partition board 4 is matched with the mounting groove 22 so as to mount the insulating partition board 4 on the rubber shell 2. The structure of the assembled tag connector is shown in fig. 2.
According to the single current-carrying connector, the insulation partition plates are arranged to provide electrical insulation isolation for external wiring, so that the grid-connected system is connected with a power grid more safely.
Example 6
This embodiment provides a grid-tie system, as shown in fig. 3, comprising a box housing 7, a PCB board 8, and a single current-carrying connector provided in any one of embodiments 1 to 5.
As shown in fig. 3, the housing 7 is used to secure a single current carrying connector.
As shown in fig. 3, a PCB board 8 is located inside the case housing and electrically connected to the copper bar 1 through wires 6.
For example, 4 single current-carrying connectors are used in fig. 3, and the electrodes of the four single current-carrying connectors are respectively set as L1/L2/L3/N, and the four single current-carrying connectors are applied to a three-phase grid-connected system. During installation, proper installation positions can be selected according to the layout requirement of the grid-connected system, four single current-carrying connectors are firstly installed on the shell of the box body respectively, and wires of the four single current-carrying connectors are locked on the PCB 8, so that the assembly process can be completed.
Alternatively, the number of the single current-carrying connectors can be adjusted according to the wiring requirements in practical application.
According to the grid-connected system, the single current-carrying connectors are arranged, so that the number and the installation positions of the single current-carrying connectors can be selected according to actual requirements when the grid-connected system achieves the grid-connected function, and the application of inverters in the grid-connected system in different application scenes is met.
Example 7
The present embodiment provides a grid-connected system, which differs from the grid-connected system provided in embodiment 6 only in that: the PCB 8 is provided with a wiring terminal, and the wiring terminal is electrically connected with the wire 6.
According to the grid-connected system, the wiring terminals are arranged, so that the connection relation between the wires and the PCB is clearer, and the operation is easy.
Example 8
The present embodiment provides a grid-connected system which differs from the grid-connected system provided in embodiment 6 or embodiment 7 only in that: the side of the case housing 7 is formed with a wiring hole through which the wire 6 is connected to the PCB board 8.
Above-mentioned grid-connected system sets up the wiring hole through at the box shell for the wire rod can directly pass the wiring hole and be connected with the PCB board, has marked the mounted position of wire rod and has saved the length of use of wire rod, can also set up the wiring hole in the box shell multiple place according to actual demand in practical application, in order to satisfy different wiring demands.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (8)
1. A single current carrying connector, comprising:
a rubber shell (2);
the mounting hole (21) is formed in the rubber shell (2), and the mounting hole (21) is used for being connected with a box shell (7) of the grid-connected system through a connecting piece;
the copper bar (1) is electrically connected with the wire rod (6), the copper bar (1) and the wire rod (6) are integrated in the rubber shell (2), and the copper bar (1) is used for being electrically connected to a PCB (8) in a box shell (7) of the grid-connected system through the wire rod (6).
2. The single current carrying connector according to claim 1, wherein the connection is a set screw (5), the set screw (5) being threadedly connected with the mounting hole (21).
3. The single current carrying connector according to claim 1, characterized in that glue is applied between the copper bar (1) and the glue shell (2) for waterproofing between the copper bar (1) and the glue shell (2).
4. A single current carrying connector according to claim 3, further comprising a waterproof rubber ring (3);
the waterproof rubber ring (3) is fixed between the rubber shell (2) and the box body shell of the grid-connected system and used for preventing water between the rubber shell (2) and the box body shell of the grid-connected system.
5. The single current carrying connector according to any one of claims 1 to 4, further comprising an insulating spacer (4);
the rubber shell (2) is provided with a mounting groove (22), and the mounting groove (22) is used for mounting the insulating partition plate (4).
6. A grid-tie system, comprising:
at least one single current carrying connector, the single current carrying connector being the single current carrying connector of any one of claims 1-5;
-a housing (7) for fixing said single current carrying connector;
the PCB (8) is positioned inside the box body shell and is electrically connected with the copper bar (1) through the wire (6).
7. Grid tie system according to claim 6, characterized in that a connection terminal is provided on the PCB board (8), which connection terminal is electrically connected with the wire (6).
8. Grid tie system according to claim 6, characterized in that the box housing (7) is profiled with wiring holes through which the wires (6) are connected to the PCB board (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320957337.6U CN219917697U (en) | 2023-04-24 | 2023-04-24 | Single current-carrying connector and grid-connected system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320957337.6U CN219917697U (en) | 2023-04-24 | 2023-04-24 | Single current-carrying connector and grid-connected system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219917697U true CN219917697U (en) | 2023-10-27 |
Family
ID=88437531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320957337.6U Active CN219917697U (en) | 2023-04-24 | 2023-04-24 | Single current-carrying connector and grid-connected system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219917697U (en) |
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2023
- 2023-04-24 CN CN202320957337.6U patent/CN219917697U/en active Active
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