CN220272870U - Joint, photovoltaic connector and photovoltaic system - Google Patents

Abstract

The application discloses connect, photovoltaic connector and photovoltaic system, belong to photovoltaic technical field, wherein connect and be applied to photovoltaic connector, it includes first casing and contact pin, first casing has first inner chamber, the contact pin is located first inner chamber, encircle on the first casing and be equipped with to first inner intracavity convex part, form one in the middle of the convex part and wear to establish the passageway, and the internal surface of convex part encircles and forms a guide surface, the contact pin includes the plug through wearing to establish the passageway, the plug includes the butt face of contradicting with the guide surface, the guide surface is along the butt face, extend to the direction that is close to the second tip of plug from the first tip of plug, in order to maintain the axial setting of contact pin along first casing. The plug pin can play a role in centralizing the plug pin, effectively reduces the opposite plug force when the connector is connected with the butt joint piece, and is convenient to assemble.

Description

Joint, photovoltaic connector and photovoltaic system

Technical Field

The application relates to the technical field of photovoltaics, in particular to a joint, a photovoltaic connector and a photovoltaic system.

Background

The photovoltaic connector, commonly called as a wiring terminal or a quick connector, is a key part for interconnecting various components such as a photovoltaic module, a combiner box, a controller, an inverter and the like in a photovoltaic power generation system. The photovoltaic connector generally comprises a negative electrode connector and a positive electrode connector, wherein the negative electrode connector and the positive electrode connector both comprise a body and a nut in threaded connection with the body, a contact pin and a contact sleeve which can be oppositely inserted are respectively arranged in the body of the negative electrode connector and the positive electrode connector, one cable penetrates through the nut to be connected with the contact pin, the other cable penetrates through the other nut to be connected with the contact sleeve, and when the negative electrode connector and the positive electrode connector are oppositely inserted, the electric connection of the two cables is completed.

However, existing photovoltaic connectors have the following drawbacks: the connector body is not provided with a guide structure for the contact pin, the contact pin is easy to skew, when the positive electrode connector and the negative electrode connector are inserted, the contact pin and the plug bush are not aligned, the opposite insertion force between the contact pin and the plug bush is large, the condition that the opposite insertion force exceeds standard is easy to generate, the connector is inconvenient to use, and even when the excessive external force is applied, the connector is possibly damaged.

Disclosure of Invention

An object of the present application is to provide a connector that achieves the purpose of preventing the pin from being twisted, righting the pin, and reducing the insertion force.

Another object of the present application is to provide a photovoltaic connector, which achieves the purpose of small insertion force and convenient assembly and use when the connector is connected with the butt joint piece.

It is still another object of the present application to provide a photovoltaic system, which uses the above-mentioned connector or photovoltaic connector to achieve the purpose of convenient cable connection.

One or more embodiments of the present application provide a joint, and the technical scheme that adopts is: the utility model provides a connect, is applied to photovoltaic connector, its includes first casing and contact pin, first casing has first inner chamber, the contact pin is located first inner chamber is last encircle be equipped with to first inner chamber internal convex part, form a through-arrangement passageway in the middle of the convex part, and the internal surface of convex part encircles and forms a guide surface, the contact pin includes the process through-arrangement passageway's plug, the plug include with the butt face of guide surface conflict, the guide surface is along the butt face, from the first tip of plug to be close to the direction of the second tip of plug extends, so as to maintain the contact pin is followed the axial setting of first casing.

In one embodiment, the abutment surface is a cylindrical surface, and the abutment surface and the guide surface both extend along the axial direction of the first housing.

In one embodiment, the length of the guide surface extending along the axial direction of the first housing is greater than or equal to 5mm and less than or equal to 8mm.

In one embodiment, the boss is integrally formed with the first housing.

In one embodiment, the protruding portions are provided in a plurality, the protruding portions are circumferentially arranged along the circumference of the pin, the adjacent protruding portions are arranged at intervals, and the inner surfaces of the protruding portions are matched to form the guide surface.

In one embodiment, the protruding parts are provided with four in total, and two adjacent protruding parts are arranged at a 90-degree interval.

In one embodiment, the pin comprises a connecting portion and the plug, the connecting portion is connected with the cable and the first shell, the plug is connected with the connecting portion, the diameter of the plug is smaller than that of the connecting portion, the first shell is provided with a first guiding portion which is suitable for guiding the plug to enter the penetrating channel, and the end portion of the plug is provided with a second guiding portion.

One or more embodiments of the present application provide a photovoltaic connector, and the technical scheme that adopts is: the photovoltaic connector is applied with the connector and comprises a butt joint piece matched with the connector.

In one embodiment, the docking element comprises a second housing having a second interior cavity, and a plug bush connected to the second housing and located in the second interior cavity, the plug pin being adapted to be inserted into the plug bush, the plug bush being connected to another cable, the second housing being plugged into the first housing.

One or more embodiments of the present application provide a photovoltaic system, and the technical scheme that adopts is: a photovoltaic system employing the above-described connector or photovoltaic connector.

Compared with the prior art, the beneficial effects of one or more embodiments of the present application are: (1) The structure of the convex part is increased, so that the inner surface of the convex part surrounds the contact pin to form a guide surface, the guide surface is abutted against the contact pin at the periphery of the contact pin, and the guide surface extends along the length direction of the contact pin, so that a section of the contact pin extending from the first end part to the second end part is fixed by the guide surface, the guide surface plays a role in righting the contact pin, the possibility of the contact pin being askew is greatly reduced, the contact pin can be aligned to the plug bush, the opposite insertion force when the connector is connected with the butt joint part is reduced, the assembly between the connector and the butt joint part is facilitated, the use of the photovoltaic connector is facilitated, and the connection efficiency between photovoltaic cables is improved; (2) The convex part and the guide surface have simple structures, are convenient for processing and forming, and have low use cost; (3) Further, the protruding portion and the first shell are integrally formed, the structural strength is good, and the contact pin can be continuously and reliably righted.

Drawings

Fig. 1 is a schematic structural diagram of a photovoltaic connector according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a photovoltaic connector;

FIG. 3 is a schematic view of an exploded construction of a photovoltaic connector;

FIG. 4 is a schematic structural view of a first housing according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of the cross-sectional structure in the direction A-A in FIG. 4;

FIG. 6 is a schematic view of the structure of the first housing assembly pin;

FIG. 7 is a schematic view of a pin configuration;

in the figure: 10. a joint; 11. a first housing; 111. a first lumen; 112. a convex portion; 1121. a passage is penetrated; 1122. a guide surface; 1123. a spacing space; 1124. a first convex portion; 1125. a second convex portion; 1126. a third convex portion; 1127. a fourth convex portion; 113. a first guide part; 12. a contact pin; 121. a connection part; 122. a plug; 1221. a first end; 12211. an abutment surface; 1222. a second end; 12221. a second guide part; 30. a seal; 40. a butt joint member; 41. a second housing; 411. a second lumen; 42. and (5) inserting a sleeve.

Detailed Description

The present application will be further described with reference to the specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth terms such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific protection scope of the present application that the device or element referred to must have a specific azimuth configuration and operation, as indicated or implied.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims of the present application are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

The present application provides a photovoltaic connector, as shown in fig. 1-3, comprising a header 10 and a mating member 40 mated with the header 10. The connector 10 includes a first housing 11 and a pin 12, the first housing 11 has a first inner cavity 111, the pin 12 is located in the first inner cavity 111, the pin 12 is connected with a cable, the docking unit 40 includes a second housing 41 and a plug bush 42, the second housing 41 has a second inner cavity 411, the plug bush 42 is connected with the second housing 41 and is located in the second inner cavity 411, the pin 12 is suitable for inserting the plug bush 42, the plug bush 42 is connected with another cable, and when the second housing 41 is connected with the first housing 11, the pin 12 is inserted into the plug bush 42, so as to realize the electrical connection of two cables.

Because in the prior art, the contact pin 12 is not effectively fixed in the radial direction of the connector 10, skew is easy to appear, when the connector 10 is connected with the butting piece 40, because the contact pin 12 is not aligned with the plug bush 42, the opposite plug force between the contact pin 12 and the plug bush 42 is large, the condition that the opposite plug force exceeds standard is easy to generate, the use is inconvenient, and even when the excessive external force is applied, the photovoltaic connector is possibly damaged, so that the structure of the connector 10 is improved.

The present application provides a connector 10, applied to a photovoltaic connector, and referring to fig. 4-7, the connector 10 includes a first housing 11 and a pin 12, the first housing 11 has a first inner cavity 111, the pin 12 is located in the first inner cavity 111, a protrusion 112 protruding into the first inner cavity 111 is formed on the first housing 11 in a surrounding manner, a through channel 1121 is formed in the middle of the protrusion 112, a guiding surface 1122 is formed on an inner surface of the protrusion 112 in a surrounding manner, the pin 12 includes a plug 122 passing through the through channel 1121, the plug 122 includes an abutting surface 12211 abutting against the guiding surface 1122, and the guiding surface 1122 extends along the abutting surface 12211 from a first end 1221 of the plug 122 to a direction close to a second end 1222 of the plug 122, so as to maintain the pin 12 to be disposed along an axial direction of the first housing 11. Compared with the prior art, the connector 10 has the advantages that the structure of the protruding part 112 is increased, the inner surface of the protruding part 112 surrounds the pin 12 to form the guide surface 1122, the guide surface 1122 abuts against the pin 12 at the periphery of the pin 12, the guide surface 1122 extends along the length direction of the pin 12, the plug 122 of the pin 12 is fixed by the guide surface 1122 in a length range extending from the first end 1221 to the second end 1222, the guide surface 1122 plays a role in righting the pin 12, the possibility of twisting the pin 12 is greatly reduced, the pin 12 can be aligned with the plug bush 42, the opposite insertion force when the connector 10 is connected with the opposite connector 40 is reduced, the assembly between the connector 10 and the opposite connector 40 is facilitated, the use of a photovoltaic connector is facilitated, and the connection efficiency between photovoltaic cables is improved; in addition, the convex part 112 and the guide surface 1122 are simple in structure, convenient to process and mold and low in use cost, and in addition, the problem that the photovoltaic connector is damaged due to violent operation when the inserting force is too large is avoided.

In some embodiments, the first housing 11 and the second housing 41 are coaxially disposed, the pin 12 is disposed at the center of the first housing 11, and the sleeve 42 is disposed at the center of the second housing 41.

In some embodiments, the second housing 41 is plugged with the first housing 11, and a sealing member 30 is disposed at a plugging position of the second housing 41 and the first housing, where the sealing member 30 is used for improving tightness of a connection position, realizing functions of preventing water and dust and protecting an internal electrical connection structure, and specifically, the sealing member 30 may be a sealing ring.

In some embodiments, the plug 122 has a cylindrical structure, and the contact surface 12211 is a cylindrical surface, and the contact surface 12211 and the guide surface 1122 extend along the axial direction of the first housing 11. The abutment surface 12211 and the guide surface 1122 have simple structures, in other words, the shapes of the plug 122 and the protrusion 112 are relatively simple, and the processing and the molding are convenient.

In some embodiments, the length of the guide surface 1122 extending along the axial direction of the first housing 11 is greater than or equal to 5mm, and the circumference of the contact pin 12 with a length range of at least 5mm is fixed by the guide surface 1122, so that the contact pin 12 can be effectively straightened, and the problem of skew of the contact pin 12 can be solved, meanwhile, the length of the guide surface 1122 extending along the axial direction of the first housing 11 is less than or equal to 8mm, once the guide surface 1122 is too long, that is, the dimension of the protruding portion 112 along the axial direction of the first housing 11 is larger, which is not beneficial to compact and small structure of the whole photovoltaic connector, and increases the consumable materials and processing difficulty required for manufacturing the first housing 11 and the protruding portion 112, and increases the processing and manufacturing costs.

Specifically, the guide surface 1122 may have a length of 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm along the axial direction of the first housing 11.

In some embodiments, the protruding portion 112 is integrally formed with the first housing 11, and has good structural strength, and can continuously and reliably straighten the pin 12.

Specifically, the protruding portion 112 and the first housing 11 may be integrally formed by injection molding, and the processing technology is simple and reliable.

In some embodiments, the protrusion 112 is annular, a cylindrical through passage 1121 is formed in the middle of the protrusion 112, and the protrusion 112 forms a complete annular guide surface 1122 around the inner surface of the through passage 1121.

In some embodiments, the plurality of protrusions 112 are provided in plurality, the plurality of protrusions 112 are circumferentially arranged along the pin 12, and adjacent protrusions 112 are spaced apart, and inner surfaces of the plurality of protrusions 112 cooperate to form the guide surface 1122. The adjacent convex portions 112 are arranged at intervals, that is, a certain interval space 1123 is reserved between the adjacent convex portions 112, and when the convex portions 112 are in a single annular structure, the interval spaces 1123 are occupied by the convex portions 112, that is, a plurality of convex portions 112 are arranged at intervals, so that the volume of the convex portions 112 can be reduced, the consumable materials required for manufacturing the convex portions 112 can be saved, and the advantages of reducing materials, controlling cost, reducing the weight of the joint 10 after the convex portions 112 are arranged and the like are achieved.

It will be appreciated that, in combination with the above, the protrusions 112 may be formed by injection molding in such a manner that the protrusions 112 can be reliably disposed within the first inner cavity 111, and that the number, shape, and size of the protrusions 112 can be easily adjusted. Of course, the protruding portion 112 may be formed by other methods, for example, a structure in which a plurality of protruding portions 112 are spaced apart may be obtained by cutting a single annular protruding portion 112.

In this embodiment, as shown in fig. 4 and 5, four protrusions 112 are provided, which are respectively denoted as a first protrusion 1124, a second protrusion 1125, a third protrusion 1126, and a fourth protrusion 1127, and two adjacent protrusions 112 are disposed at a distance of 90 ° therebetween, and at this time, the guide surface 1122 is formed by four curved surfaces intermittently distributed on the inner surface of the first protrusion 1124, the inner surface of the second protrusion 1125, the inner surface of the third protrusion 1126, and the inner surface of the fourth protrusion 1127. The plurality of convex parts 112 are arranged regularly, and the convex parts 112 are opposite to each other, so that the pins 12 can be forced from four different directions, the pins 12 can be righted, and the pins 12 can be prevented from inclining.

In some embodiments, as shown in fig. 7, the pin 12 includes a connection part 121 and a plug 122, the connection part 121 is connected with the cable and the first housing 11, the plug 122 is connected with the connection part 121, and the diameter of the plug 122 is smaller than that of the connection part 121, so that the plug 122 can pass through the through passage 1121, but the connection part 121 cannot pass through the through passage 1121, thereby limiting the movement of the pin 12 along the axial direction of the first housing 11, further, a first guiding part 113 adapted to guide the plug 122 into the through passage 1121 is provided on the first housing 11, and a second guiding part 12221 is provided at the end of the plug 122. It can be understood that, referring to fig. 6, when the pin 12 is assembled to the first housing 11, the pin 122 passes through the through passage 1121 from bottom to top, when one end of the connecting portion 121 connected to the first end 1221 of the pin 122 abuts against the first guiding portion 113, the pin 12 is installed in place, at this time, the second end 1222 of the pin 122 is exposed in the first cavity to be connected to the socket 42, and during assembling of the pin 12, the first guiding portion 113 and the second guiding portion 12221 can both play a role of guiding the second end 1222 of the pin 122 to be inserted into the through passage 1121, which is beneficial to reducing the assembling difficulty and improving the assembling efficiency.

It should be noted that, in this application, the first inner cavity 111 refers to the whole space surrounded by the first housing 11, the second inner cavity 411 is the same, the penetrating channel 1121 is a part of the first inner cavity 111, and in this embodiment, the penetrating channel 1121 is a space with the smallest diameter in the middle of the first inner cavity 111.

In this embodiment, the first guide portion 113 is a conical surface, the second guide portion 12221 is a spherical surface, and the first guide portion 113 and the second guide portion 12221 have simple structures and are easy to machine and mold. Of course, in other embodiments, only the first guide portion 113 or the second guide portion 12221 may be provided, and the first guide portion 113 and the second guide portion 12221 may be a plane or a curved surface extending along the radial direction of the first housing 11 and encircling one full circle, or may be a plane or a curved surface intermittently distributed, and specific shapes of the first guide portion 113 and the second guide portion 12221 include, but are not limited to, a conical surface and a spherical surface, for example, may be an inclined plane, as long as the insertion direction of the guide pin 12 can be achieved.

It should be added that to ensure reliable and stable connection of the pin 12 to the socket 42, the length of the pin 12 is increased compared to the length of the prior art, and in some embodiments, the length of the pin 12 is equal to the length of the guide surface 1122 extending axially along the first housing 11, e.g., when the guide surface 1122 extends axially 5.5mm along the first housing 11, the plug 122 of the pin 12 is correspondingly increased by 5.5mm to ensure a sufficient mating length between the plug 122 of the pin 12 and the socket 42.

The application can also provide a photovoltaic system, and the connector 10 or the photovoltaic connector is used, because the structure of the connector 10 is improved, the opposite insertion force is small when the connector 10 is connected with the butt joint piece 40, and the assembly is convenient, so that the connector 10 or the photovoltaic connector using the connector 10 is used for connecting a cable, and the photovoltaic system has the advantage of high cable connection efficiency.

The foregoing has outlined the basic principles, main features and advantages of the present application. It will be appreciated by persons skilled in the art that the present application is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the present application, and that various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of protection of the present application is defined by the appended claims and equivalents thereof.

Claims (10)

1. A connector for use with a photovoltaic connector, comprising: including first casing and contact pin, first casing has first inner chamber, the contact pin is located first inner chamber, encircle on the first casing be equipped with to first inner chamber internal convex part, form one in the middle of the convex part and wear to establish the passageway, and the internal surface of convex part encircles and forms a guide surface, the contact pin includes the process wear to establish the plug of passageway, the plug include with the butt face of guide surface conflict, the guide surface follows the butt face, from the first tip of plug extends to being close to the direction of the second tip of plug, in order to maintain the contact pin is followed the axial setting of first casing.

2. The joint of claim 1, wherein: the abutting surface is a cylindrical surface, and the abutting surface and the guide surface extend along the axial direction of the first shell.

3. A joint as claimed in claim 2, wherein: the length of the guide surface extending along the axial direction of the first shell is more than or equal to 5mm and less than or equal to 8mm.

4. A joint according to any one of claims 1 to 3, wherein: the convex part and the first shell are integrally formed.

5. The joint as defined in claim 4, wherein: the convex parts are arranged in a plurality, the convex parts are circumferentially arranged along the pin, the adjacent convex parts are arranged at intervals, and the inner surfaces of the convex parts are matched to form the guide surface.

6. The joint of claim 5, wherein: the protruding parts are arranged in four in total, and every two adjacent protruding parts are arranged at an interval of 90 degrees.

7. A joint according to any one of claims 1 to 3, wherein: the contact pin comprises a connecting part and a plug, wherein the connecting part is connected with a cable and a first shell, the plug is connected with the connecting part, the diameter of the plug is smaller than that of the connecting part, a first guide part which is suitable for guiding the plug to enter the penetrating channel is arranged on the first shell, and a second guide part is arranged at the end part of the plug.

8. Photovoltaic connector, its characterized in that: use of a joint according to any of claims 1-7 and comprising a mating part for mating with said joint.

9. The photovoltaic connector of claim 8, wherein: the butt joint piece comprises a second shell and a plug bush, wherein the second shell is provided with a second inner cavity, the plug bush is connected with the second shell and is positioned in the second inner cavity, the plug pin is suitable for being inserted into the plug bush, the plug bush is connected with another cable, and the second shell is spliced with the first shell.

10. Photovoltaic system, its characterized in that: use of a joint according to any of claims 1-7 or a photovoltaic connector according to any of claims 8-9.