Direct current wiring assembly and power converter

Abstract

The utility model discloses a direct-current wiring assembly and a power converter. The direct-current wiring assembly comprises a first cable, a second cable, a first terminal and a second terminal, the first cable is led out from the photovoltaic module, and the second cable is led out from the power conversion circuit; the first terminal and the first cable are electrically connected and have the same color; the second terminal and the second cable are electrically connected and have the same color; the first terminal and the second terminal are in plugging cooperation to realize electrical connection of the first cable and the second cable. According to the direct current wiring assembly, the color of the first terminal is the same as that of the first cable, and the color of the second terminal is the same as that of the second cable, so that field operators can perform butt joint installation according to the colors of the first terminal and the second terminal, the wiring error phenomenon can be reduced, and the wiring efficiency of the direct current wiring assembly is improved.

Description

Technical Field

[0001] This application relates to the field of power electronics technology, and in particular to a DC wiring assembly and a power converter. Background Technology

[0002] Currently, the cables at the output terminals of photovoltaic modules are mostly red and black to distinguish between positive and negative terminals. However, the terminals connected to the cables are all the same color, as are the terminals installed in the power conversion circuit. The terminal positions may also differ between different machines, which may lead to problems such as incorrect positive and negative terminal connections by on-site wiring operators and low efficiency when connecting to the power conversion circuit.

[0003] Therefore, how to improve the wiring efficiency of DC wiring components has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] This application proposes a DC wiring assembly and a power converter to improve the wiring efficiency of the DC wiring assembly.

[0005] To achieve the above objectives, this application discloses the following technical solutions:

[0006] In a first aspect, this application provides a DC wiring assembly, including a first cable, a second cable, a first terminal, and a second terminal; the first cable is led out from a photovoltaic module, and the second cable is led out from a power conversion circuit;

[0007] The first terminal is electrically connected to the first cable, and the two are the same color.

[0008] The second terminal is electrically connected to the second cable, and the two are the same color.

[0009] The first terminal and the second terminal are plugged in to achieve an electrical connection between the first cable and the second cable.

[0010] In some embodiments, one of the first terminal and the second terminal is a male terminal, and the other is a female terminal.

[0011] In some embodiments, the first terminal is plugged into the first cable;

[0012] The second terminal is connected to the second cable.

[0013] In some embodiments, the first terminal includes a pin, a first snap-fit ​​portion, and a first groove, with the pin and the first groove located at both ends of the first terminal, and the first cable being inserted into the first groove via a first pin;

[0014] The second terminal includes a socket, a second snap-fit ​​portion, and a second groove. The socket and the second groove are located at opposite ends of the second terminal. The second cable is inserted into the second groove via a second pin.

[0015] When the pin is inserted into the socket, the first locking part and the second locking part engage.

[0016] In some embodiments, the first pin is the same color as the first terminal; the second pin is the same color as the second terminal.

[0017] In some embodiments, the first latching part is a buckle, and the second latching part is a snap hole.

[0018] In some embodiments, the first terminal and the second terminal are the same color.

[0019] In some embodiments, the first terminal and the second terminal are different colors.

[0020] In a second aspect, a power converter is provided, including a power conversion circuit, a positive DC connection assembly, and a negative DC connection assembly. The positive DC connection assembly is connected to the positive terminal of the photovoltaic module and the positive terminal of the power conversion circuit, and the negative DC connection assembly is connected to the negative terminal of the photovoltaic module and the negative terminal of the power conversion circuit. The positive DC connection assembly and the negative DC connection assembly are any of the DC connection assemblies described above.

[0021] In some embodiments, the first cable of the positive DC connection assembly and the first cable of the negative DC connection assembly are different colors.

[0022] In some embodiments, the second cable of the positive DC wiring assembly and the second cable of the negative DC wiring assembly are different colors.

[0023] In some embodiments, all the first terminals of the positive DC connection component of the photovoltaic module are male terminals, and all the second terminals of the positive DC connection component of the power conversion circuit are female terminals; or all the first terminals of the positive DC connection component of the photovoltaic module are female terminals, and all the second terminals of the positive DC connection component of the power conversion circuit are male terminals.

[0024] As can be seen from the above technical solution, with the DC wiring assembly of this application, since the first terminal is the same color as the first cable and the second terminal is the same color as the second cable, the on-site operator can connect and install according to the colors of the first and second terminals, thereby reducing the occurrence of wiring errors and improving the wiring efficiency of the DC wiring assembly. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort, and this application can be applied to other similar scenarios based on the provided drawings. Unless obvious from the linguistic context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0026] Figure 1 A perspective view of a DC wiring assembly provided in an embodiment of this application;

[0027] Figure 2 for Figure 1 Front view of the DC wiring assembly shown;

[0028] Figure 3 for Figure 2 Sectional view of section AA;

[0029] Figure 4 A perspective view of the first terminal, first pin, and first cable provided in an embodiment of this application;

[0030] Figure 5 A perspective view of the first terminal provided in an embodiment of this application;

[0031] Figure 6 for Figure 5 The front view of the first terminal shown;

[0032] Figure 7 for Figure 6 Sectional view of section BB;

[0033] Figure 8 A perspective view of the second terminal, the second pin, and the second cable provided in an embodiment of this application;

[0034] Figure 9 A perspective view of the second terminal provided in an embodiment of this application;

[0035] Figure 10 for Figure 9 The front view of the second terminal is shown;

[0036] Figure 11 for Figure 11 A sectional view of section C-C;

[0037] Figure 12 A perspective view of a power converter provided in an embodiment of this application;

[0038] In the diagram: 10 - DC wiring assembly; 11 - First terminal; 12 - Second terminal; 13 - First cable; 14 - Second cable; 15 - First pin; 16 - Second pin;

[0039] 111-Pin; 112-First snap-fit ​​part; 113-First groove;

[0040] 121-Socket; 122-Second snap-fit ​​part; 123-Second groove;

[0041] 10a - Positive DC wiring assembly; 10b - Negative DC wiring assembly. Detailed Implementation

[0042] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. The described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without inventive effort are within the scope of protection of the present application.

[0043] In order to improve the wiring efficiency of the DC wiring assembly 10, this application describes the structure of the DC wiring assembly 10 in detail with reference to the accompanying drawings:

[0044] See Figures 1 to 4 To achieve the above objectives, this application discloses the following technical solutions:

[0045] A DC wiring assembly 10 includes a first cable 13, a second cable 14, a first terminal 11, and a second terminal 12. The first cable 13 is led out from a photovoltaic module, and the second cable 14 is led out from a power conversion circuit. The first terminal 11 is electrically connected to the first cable 13, and the two are the same color. The second terminal 12 is electrically connected to the second cable 14, and the two are the same color. The first terminal 11 and the second terminal 12 are plugged in to realize the electrical connection between the first cable 13 and the second cable 14.

[0046] Since the first terminal 11 is the same color as the first cable 13 and the second terminal 12 is the same color as the second cable 14, the on-site operator can connect and install the cable according to the colors of the first terminal 11 and the second terminal 12, thereby reducing the occurrence of wiring errors and improving the wiring efficiency of the DC wiring assembly 10.

[0047] Of the two terminals 11 and 12 mentioned above, one is a male terminal and the other is a female terminal. The head of the male terminal is usually pointed or protruding needle-like, while the female terminal is usually hole-like or concave in shape.

[0048] The first terminal 11 and the first cable 13 can be an integrated structure or a separate structure. For example, the first terminal 11 and the first cable 13 are plugged into each other. When the first terminal 11 is damaged, it can be directly replaced, reducing maintenance costs. Similarly, the second terminal 12 and the second cable 14 can be an integrated structure or a separate structure. For example, the second terminal 12 and the second cable 14 are plugged into each other. When the second terminal 12 is damaged, it can be directly replaced, reducing maintenance costs.

[0049] As described above, one of the first terminal 11 and the second terminal 12 is a male terminal, and the other is a female terminal. This application will take the example of the first terminal 11 being a male terminal and the second terminal 12 being a female terminal for detailed explanation:

[0050] See Figures 4 to 7 The first terminal 11 includes a pin 111, a first snap-fit ​​portion 112 and a first groove 113. The pin 111 and the first groove 113 are located at both ends of the first terminal 11. The first cable 13 is inserted into the first groove 113 through the first pin 15.

[0051] See Figures 8 to 11 The second terminal 12 includes a socket 121, a second snap-fit ​​portion 122, and a second groove 123. The socket 121 and the second groove 123 are located at both ends of the second terminal 12. The second cable 14 is inserted into the second groove 123 through the second pin 16.

[0052] When pin 111 is inserted into socket 121, the first snap-fit ​​part 112 snaps into the second snap-fit ​​part 122.

[0053] In the diagram, there are two first latching parts 112, located on either side of the pin 111; and two second latching parts 122, located on either side of the socket 121. Of course, the number of first latching parts 112 and second latching parts 122 can also be one, three, etc.

[0054] The first snap-fit ​​part 112 is a snap fastener, and the second snap-fit ​​part 122 is a snap hole. In some examples, the first snap-fit ​​part 112 may be a snap hole, and the second snap-fit ​​part 122 may be a snap fastener.

[0055] To further improve wiring efficiency, the first pin 15 is the same color as the first terminal 11; the second pin 16 is the same color as the second terminal 12. During wiring, because the first pin 15, the first cable 13, and the first terminal 11 are the same color, and the second pin 16, the second cable 14, and the second terminal 12 are the same color, rapid sorting and assembly are possible, thus improving wiring efficiency.

[0056] In some examples, the first terminal 11 and the second terminal 12 are the same color. Therefore, when dealing with various wiring requirements, the first terminal 11 and the second terminal 12 of the same type can be quickly classified. Of course, in some examples, the first terminal 11 and the second terminal 12 are different colors.

[0057] See Figure 12 This application also discloses a power converter, including a power conversion circuit, a positive DC connection component 10a, and a negative DC connection component 10b. The positive DC connection component 10a is connected to the positive terminal of the photovoltaic module and the positive terminal of the power conversion circuit, and the negative DC connection component 10b is connected to the negative terminal of the photovoltaic module and the negative terminal of the power conversion circuit. The positive DC connection component 10a and the negative DC connection component 10b are any of the DC connection components 10 described above. Since the DC connection component 10 has the above-mentioned beneficial effects, the power conversion circuit including the DC connection component 10 has corresponding effects, which will not be elaborated here.

[0058] The first cable 13 of the positive DC wiring assembly 10a and the first cable 13 of the negative DC wiring assembly 10b are different colors, which can quickly classify the first terminal 11, the second terminal 12, the first cable 13 and the second cable 14 corresponding to the positive DC wiring assembly 10a, and the first terminal 11, the second terminal 12, the first cable 13 and the second cable 14 corresponding to the negative DC wiring assembly 10b, thereby reducing wiring errors and improving wiring efficiency.

[0059] In other examples, the second cable 14 of the positive DC wiring assembly 10a and the second cable 14 of the negative DC wiring assembly 10b are different colors.

[0060] The aforementioned power converters can be inverters, converters, frequency converters, and grid simulators, etc.

[0061] In addition to quick classification by color, the positive DC wiring assembly 10a and negative DC wiring assembly 10b can also be classified by adjusting the male and female terminals. For example, all the first terminals 11 of the positive DC wiring assembly 10a located in the photovoltaic module are male terminals, and all the second terminals 12 of the positive DC wiring assembly 10a located in the power conversion circuit are female terminals; or all the first terminals 11 of the negative DC wiring assembly 10b located in the photovoltaic module are female terminals, and all the second terminals 12 of the positive DC wiring assembly 10a located in the power conversion circuit are male terminals.

[0062] In the above context, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0063] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. "And / or" in this article is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone.

[0064] It should be noted that, for ease of description, only the parts relevant to the application are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0065] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed, and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. The scope of this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described application concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A DC wiring assembly, characterized in that, It includes a first cable, a second cable, a first terminal, and a second terminal; the first cable is led out from the photovoltaic module, and the second cable is led out from the power conversion circuit; The first terminal is electrically connected to the first cable, and the two are the same color. The second terminal is electrically connected to the second cable, and the two are the same color; The first terminal and the second terminal are plugged in to achieve an electrical connection between the first cable and the second cable.

2. The DC wiring assembly as described in claim 1, characterized in that, One of the first terminal and the second terminal is a male terminal, and the other is a female terminal.

3. The DC wiring assembly as described in claim 2, characterized in that, The first terminal is plugged into the first cable; The second terminal is plugged into the second cable.

4. The DC wiring assembly as described in claim 3, characterized in that, The first terminal includes a pin, a first snap-fit ​​portion, and a first groove. The pin and the first groove are located at both ends of the first terminal, and the first cable is inserted into the first groove through a first pin. The second terminal includes a socket, a second snap-fit ​​portion, and a second groove. The socket and the second groove are located at opposite ends of the second terminal. The second cable is inserted into the second groove via a second pin. When the pin is inserted into the socket, the first locking part engages with the second locking part.

5. The DC wiring assembly as described in claim 4, characterized in that, The first pin is the same color as the first terminal; the second pin is the same color as the second terminal.

6. The DC wiring assembly as described in claim 4, characterized in that, The first snap-fit ​​part is a buckle, and the second snap-fit ​​part is a snap hole.

7. The DC wiring assembly as described in claim 1, characterized in that, The first terminal and the second terminal are the same color.

8. The DC wiring assembly as described in claim 1, characterized in that, The first terminal and the second terminal are different colors.

9. A power converter, characterized in that, It includes a power conversion circuit, a positive DC connection assembly, and a negative DC connection assembly. The positive DC connection assembly connects the positive terminal of the photovoltaic module to the positive terminal of the power conversion circuit, and the negative DC connection assembly connects the negative terminal of the photovoltaic module to the negative terminal of the power conversion circuit. The positive DC connection assembly and the negative DC connection assembly are DC connection assemblies as described in any one of claims 1 to 8.

10. The power converter as described in claim 9, characterized in that, The first cable of the positive DC connection assembly and the first cable of the negative DC connection assembly are different colors.

11. The power converter as described in claim 9, characterized in that, The second cable of the positive DC wiring assembly and the second cable of the negative DC wiring assembly are different colors.

12. The power converter as described in claim 9, characterized in that, All the first terminals of the positive DC connection assembly of the photovoltaic module are male terminals, and all the second terminals of the positive DC connection assembly of the power conversion circuit are female terminals; or all the first terminals of the positive DC connection assembly of the photovoltaic module are female terminals, and all the second terminals of the positive DC connection assembly of the power conversion circuit are male terminals.

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