Large-current electrifying copper bar connector for photovoltaic inverter

Abstract

The utility model discloses a large-current power-on copper bar connector for a photovoltaic inverter, which comprises a connector main body penetrating through an inverter box body, two strip grooves arranged in parallel are arranged on the connector main body, any strip groove is internally provided with a conduction sheet, any conduction sheet is connected with an L-shaped copper bar extending into the inverter box body, and the L-shaped copper bar is connected with the connector main body. The L-shaped copper bar comprises a first connecting part limited in the bar groove and a second connecting part connected with the first connecting part, the bottom of the second connecting part is provided with at least one U-shaped connecting terminal used for being connected with the PCB in an abutting and conducting matched mode, and the opening end of the U-shaped connecting terminal faces the PCB. According to the utility model, the large-current power-on requirement of the photovoltaic inverter is met, and the conduction and connection are reliable. Stable conduction cooperation can be realized, and the conduction stability is obviously improved. The design is simple, ingenious and compact, the installation operation is convenient and fast, and the cost is high. And the effective service life of the connector is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a big current electrification copper bar connector for photovoltaic inverter belongs to the technical field of photovoltaic inverter connector. BACKGROUND

[0002] With the increasing demand of photovoltaic inverter, the competition is more and more fierce, many inverters need to input or output large current, and the volume of the machine also needs to be as small as possible, and it needs to have high safety and stability.

[0003] The photovoltaic inverter has an inverter shell, when the connector is set, the standard connector joint is generally used to be electrically connected with the PCB board, the traditional connector cannot adapt to the large current electrification demand, so the copper bar design that is in conductive connection with the PCB board is needed, that is, the large current electrification copper bar needs to be set in the connector, and the existing copper bar is generally locked in the connector, so that the conductive connection between the copper bar and the PCB board is difficult to be stable, and the conductive failure is easy to occur.

[0004] In addition, the traditional large current copper bar connector is used between the battery box, which needs to set the conductive ring structure matched with the conductive column on the copper bar, and the PCB board in the photovoltaic inverter cannot realize stable matching with the copper bar, which is the difficulty of the existing large current copper bar connector that cannot be applied to the photovoltaic inverter. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the above-mentioned prior art's insufficient, aiming at the problem that the traditional large current copper bar cannot be applied to the photovoltaic inverter and the poor conduction stability, a big current electrification copper bar connector for photovoltaic inverter is provided.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is:

[0007] The big current electrification copper bar connector for photovoltaic inverter, the photovoltaic inverter includes an inverter box body, the bottom of the inverter box body is provided with a PCB circuit board;

[0008] The big current electrification copper bar connector includes a connector main body penetrating through the inverter box body, two parallel strip grooves are arranged on the connector main body, a conductive sheet is arranged in any strip groove, any conductive sheet is connected with an L-shaped copper bar extending into the inverter box body, the L-shaped copper bar includes a first connecting part limited in the strip groove and a second connecting part connected with the first connecting part, the bottom of the second connecting part is provided with at least one U-shaped connecting terminal for abutting and conductive matching with the PCB circuit board, and the opening end of the U-shaped connecting terminal faces the PCB circuit board.

[0009] Preferably, the U-shaped connecting terminal comprises two electrically connecting ends, and a plurality of conductive protrusions are arranged on the electrically connecting ends.

[0010] Preferably, the second connecting part and the U-shaped connecting terminal are detachably connected, and the first connecting part and the conductive sheet are detachably connected.

[0011] Preferably, the second connecting part and the U-shaped connecting terminal are detachably connected through conductive bolts, and the first connecting part and the conductive sheet are detachably connected through conductive bolts.

[0012] Preferably, the L-shaped copper bar is provided with a waist-shaped hole for cooperating with the conductive bolt.

[0013] Preferably, the connector body comprises a connecting frame plate, an inner sealing ring groove and an outer sealing ring groove arranged on the outer periphery of the inner sealing ring groove are arranged on one side of the connecting frame plate facing the inverter box, and a connecting end for locking and cooperating with an external connector is arranged on the side of the connecting frame plate away from the inverter box.

[0014] Preferably, the connecting frame plate is provided with a plurality of locking channels between the inner sealing ring groove and the outer sealing ring groove.

[0015] Preferably, the bottom of the inverter box is provided with a plurality of mounting locking pins for locking the PCB circuit board, and a gap is left between the PCB circuit board and the bottom wall of the inverter box.

[0016] The beneficial effects of the utility model mainly reflect in:

[0017] 1. Meet the large current power-on demand of photovoltaic inverter, and the conductive connection is reliable.

[0018] 2. Stable conductive cooperation can be realized, and the conductive stability is significantly improved.

[0019] 3. The design is simple, ingenious and compact, the installation operation is convenient and fast, and the utility model has high cost advantage.

[0020] 4. The effective service life of the connector is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0021] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the accompanying drawings:

[0022] Figure 1 is a schematic diagram of the installation structure of the large current power-on copper bar connector for photovoltaic inverter of the utility model.

[0023] Figure 2This is a schematic diagram of the installation structure of the high-current copper busbar connector for photovoltaic inverters from another perspective.

[0024] Figure 3 This is a schematic diagram of the structure of the high-current copper busbar connector for photovoltaic inverters according to this utility model.

[0025] Figure 4 This is another perspective structural schematic diagram of the high-current copper busbar connector for photovoltaic inverters according to this utility model.

[0026] Figure 5 This is an exploded structural diagram of the high-current copper busbar connector for photovoltaic inverters according to this utility model. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in the present application can be combined with each other.

[0029] This utility model provides a high-current copper busbar connector for photovoltaic inverters, such as... Figures 1 to 5 As shown, the photovoltaic inverter 100 includes an inverter housing 110, and a PCB circuit board 120 is provided at the bottom of the inverter housing 110.

[0030] The high-current copper busbar connector in this case, such as... Figures 1 to 5 As shown, the connector body 1 extends through the inverter housing. The connector body 1 has two parallel grooves 2. A conductive piece 3 is provided in any groove 2. The conductive piece 3 is connected to an L-shaped copper busbar 4 extending into the inverter housing. The L-shaped copper busbar 4 includes a first connecting part 41 limited in the groove and a second connecting part 42 connected to the first connecting part. The bottom of the second connecting part 42 is provided with at least one U-shaped connecting terminal 5 for abutting and conducting with the PCB circuit board. The open end of the U-shaped connecting terminal 5 faces the PCB circuit board.

[0031] Specific implementation process and principle description:

[0032] When the traditional photovoltaic inverter is externally connected, a conducting wire needs to be arranged between the connector and the PCB circuit board, and a corresponding power connection port needs to be arranged on the PCB circuit board. The traditional power connection port cannot meet the large current demand.

[0033] In view of this situation, the PCB circuit board itself has a conducting part, and the U-shaped connecting terminal 5 on the L-shaped copper bar 4 in the present case can realize direct conduction, meeting the large current power-on demand. The connector body 1 can realize the matching demand of penetrating the inverter box, the strip slot 2 thereon is used for passing through the positive and negative poles, and the conducting sheet 3 is used for realizing conduction matching with external equipment. The design of the L-shaped copper bar 4, the first connecting part of which is limited in the strip slot, meets the stability demand of limiting and locking, and the opening end of the U-shaped connecting terminal 5 has double contact points, ensuring reliable contact and stable conduction.

[0034] In one specific embodiment, the U-shaped connecting terminal 5 includes two power connection ends 51, and the power connection end 51 is provided with a plurality of conducting protrusions 52 arranged at intervals.

[0035] As shown in Figures 3 to 5 The power connection end 51 adopts the conduction structure design of a plurality of conducting protrusions 52, which can guarantee the reliability of multi-point contact between the PCB circuit board and the U-shaped connecting terminal 5, and the conduction stability is significantly improved.

[0036] In one specific embodiment, the second connecting part and the U-shaped connecting terminal, and the first connecting part and the conducting sheet are respectively detachably connected.

[0037] That is, it meets the detachable matching demand, and is convenient for assembly and disassembly and maintenance.

[0038] In one specific embodiment, the second connecting part and the U-shaped connecting terminal, and the first connecting part and the conducting sheet are respectively detachably connected.

[0039] The conducting bolt 6 can realize the assembly and conduction matching of the second connecting part and the U-shaped connecting terminal, and the first connecting part and the conducting sheet, meeting the conduction demand and the locking reliability demand.

[0040] In one specific embodiment, the L-shaped copper bar 4 is provided with a waist-shaped hole 40 for cooperating with the conducting bolt. Generally, one waist-shaped hole 40 is arranged on the first connecting part, and two waist-shaped holes are arranged on the second connecting part. Through the design of the three waist-shaped holes 40, the position degree of the L-shaped copper bar 40 is adjusted, so that the U-shaped connecting terminal is accurately matched, and the three-point stability demand is met after locking.

[0041] In one embodiment, the connector body 1 comprises a matching frame plate 11, which is provided with an inner sealing ring groove 12 on the side facing the inverter box and an outer sealing ring groove 13 arranged on the outer periphery of the inner sealing ring groove, and is provided with a matching end 14 for locking with an external connector on the side away from the inverter box.

[0042] Specifically, when assembling, the matching frame plate 11 is attached to the outer wall of the inverter box 110, and the sealing isolation is realized through the sealing rings in the inner sealing ring groove 12 and the outer sealing ring groove 13, so that the sealing performance of the assembly is guaranteed, and the matching end 14 facilitates the conduction matching of the external connector, meeting the plug-in matching requirement.

[0043] In one embodiment, the matching frame plate 11 is provided with a plurality of locking channels 15 between the inner sealing ring groove and the outer sealing ring groove.

[0044] That is, it meets the locking and mounting requirement of the bolt passing through the locking channel 15 to lock the matching frame plate 11 on the inverter box 110, and it is located between the inner and outer sealing rings and does not affect the sealing performance.

[0045] In one embodiment, the bottom of the inverter box 110 is provided with a plurality of mounting locking pins 130 for locking the PCB circuit board, and a gap is left between the PCB circuit board and the bottom wall of the inverter box.

[0046] Specifically, the U-shaped connecting terminal will generate a pressing force on the PCB circuit board, and the PCB circuit board generally has a certain elastic force, which will generate a certain deformation and a reverse springback force after being pressed by the U-shaped connecting terminal. The springback force meets the reliability requirement of conduction and attachment.

[0047] From the above description, it can be found that the large-current conduction copper bar connector for the photovoltaic inverter meets the large-current conduction requirement of the photovoltaic inverter and realizes reliable conduction matching, and the conduction stability is significantly improved. The design is simple, ingenious and compact, the installation operation is convenient and fast, and has high cost advantage. The effective service life of the connector is guaranteed.

[0048] The term "comprising" or any other similar word is intended to encompass non-exclusive inclusion, so that a process, method, article or device / apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or inherent elements of the process, method, article or device / apparatus.

[0049] The technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but the person skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. The person skilled in the art can make equivalent changes or replacements to the related technical features without deviating from the principles of the utility model, and the technical schemes after the changes or replacements will all fall within the protection scope of the utility model.

Claims

1. A high-current copper busbar connector for a photovoltaic inverter, the photovoltaic inverter including an inverter housing, the bottom of which is provided with a PCB circuit board, characterized in that: The high-current copper busbar connector includes a connector body that penetrates the inverter housing. The connector body has two parallel grooves. A conductive piece is provided in any of the grooves. Any of the conductive pieces is connected to an L-shaped copper busbar that extends into the inverter housing. The L-shaped copper busbar includes a first connecting portion that is limited within the groove and a second connecting portion that is connected to the first connecting portion. The bottom of the second connecting portion has at least one U-shaped connecting terminal for abutting and conducting with the PCB circuit board. The open end of the U-shaped connecting terminal faces the PCB circuit board.

2. The high-current copper busbar connector for photovoltaic inverters according to claim 1, characterized in that: The U-shaped connection terminal includes two electrical terminals, and the electrical terminals are provided with a plurality of conductive protrusions arranged at intervals.

3. The high-current copper busbar connector for photovoltaic inverters according to claim 1, characterized in that: The second connecting part and the U-shaped connecting terminal, and the first connecting part and the conductive piece are respectively detachably connected.

4. The high-current copper busbar connector for photovoltaic inverters according to claim 3, characterized in that: The second connecting part and the U-shaped connecting terminal, and the first connecting part and the conductive piece are respectively detachably connected by conductive bolts.

5. The high-current copper busbar connector for photovoltaic inverters according to claim 4, characterized in that: The L-shaped copper busbar is provided with a waist-shaped hole for mating with the conductive bolt.

6. The high-current copper busbar connector for photovoltaic inverters according to any one of claims 1 to 5, characterized in that: The connector body includes a mating frame plate. The mating frame plate has an inner sealing ring groove and an outer sealing ring groove on the side facing the inverter housing. The mating frame plate has a mating end on the side away from the inverter housing for locking with an external connector.

7. The high-current copper busbar connector for photovoltaic inverters according to claim 6, characterized in that: The mating frame plate is provided with several locking channels located between the inner sealing ring groove and the outer sealing ring groove.

8. The high-current copper busbar connector for photovoltaic inverters according to claim 1, characterized in that: The bottom of the inverter enclosure is provided with several mounting and locking pins for securing the PCB circuit board, and a gap is left between the PCB circuit board and the bottom wall of the inverter enclosure.

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