CN216436234U

CN216436234U - Photovoltaic connector

Info

Publication number: CN216436234U
Application number: CN202123052955.6U
Authority: CN
Inventors: 黄东梅; 杨连丽
Original assignee: Canadian Solar Manufacturing Changshu Inc; Atlas Sunshine Power Group Co Ltd
Current assignee: Canadian Solar Inc; Canadian Solar Manufacturing Changshu Inc
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-05-03
Anticipated expiration: 2031-12-07

Abstract

The utility model discloses a photovoltaic connector, it belongs to the photovoltaic technology field, and this photovoltaic connector includes positive pole subassembly, negative pole subassembly, contact pin, plug bush and built-in. The positive electrode assembly comprises a positive electrode body, and one end of the positive electrode body is provided with a positive electrode internal connecting sleeve; the cathode component comprises a cathode body, one end of the cathode body is provided with a cathode outer connecting sleeve, and the inner side wall of the cathode outer connecting sleeve is provided with internal threads; the contact pin is arranged in the negative pole body, and one end of the contact pin is positioned in the negative pole outer connecting sleeve; the plug bush is arranged in the anode body, one end of the plug bush is tightly sleeved in the anode inner connecting sleeve, and the contact pin can be plugged in the plug bush; be provided with the holding chamber in the built-in, the lateral wall of built-in is provided with the external screw thread, and in the negative pole outer joint cover was located to the built-in through the external screw thread cover, anodal in-connection cover can peg graft to the holding intracavity and with the inside wall butt in holding chamber, the coefficient of heat conductivity of built-in is higher than the coefficient of heat conductivity of anodal in-connection cover. The utility model discloses can improve photovoltaic connector's heat dispersion.

Description

Photovoltaic connector

Technical Field

The utility model relates to a photovoltaic technology field especially relates to a photovoltaic connector.

Background

The photovoltaic connector mainly plays a role in connecting each photovoltaic module in a photovoltaic power station. Photovoltaic connectors generally include a positive assembly and a negative assembly that mate with each other. The metal contact pin is arranged on the negative electrode assembly, the metal plug bush is arranged on the positive electrode assembly, and the metal contact pin is inserted into the metal plug bush to realize the insertion of the positive electrode assembly and the negative electrode assembly.

In the prior art, the size of a photovoltaic module is larger and larger, and the rated current is multiplied. At present, PPE (polyphenylene ether, thermoplastic resin) is one of the materials commonly used for the housing of the photovoltaic connector. However, the use of PPE as the housing of the photovoltaic connector has the following disadvantages: the thermal deformation temperature of the PPE material is low, and when the current of the photovoltaic module is increased and the photovoltaic module works for a long time, the heat productivity of the photovoltaic connector is increased and the risk of thermal deformation exists.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a photovoltaic connector, its heat dispersion is good, can adapt to the higher photovoltaic module of rated current.

As the conception, the utility model adopts the technical proposal that:

a photovoltaic connector, comprising:

the positive electrode assembly comprises a positive electrode body, wherein one end of the positive electrode body is provided with a positive electrode internal connecting sleeve;

the cathode assembly comprises a cathode body, one end of the cathode body is provided with a cathode outer connecting sleeve, and the inner side wall of the cathode outer connecting sleeve is provided with an internal thread;

the contact pin is arranged in the negative electrode body, and one end of the contact pin is positioned in the negative electrode outer connecting sleeve;

the plug bush is arranged in the anode body, one end of the plug bush is tightly sleeved in the anode inner connecting bush, and the contact pin can be plugged in the plug bush;

the negative pole external connection sleeve is internally provided with a containing cavity with two through ends, the outer side wall of the internal part is provided with external threads matched with the internal threads, the internal part is sleeved in the negative pole external connection sleeve through the external threads, the positive pole internal connection sleeve can be plugged in the containing cavity and abutted against the inner side wall of the containing cavity, and the heat conductivity coefficient of the internal part is higher than that of the positive pole internal connection sleeve.

Optionally, the built-in part is an integrally formed structure, including:

a light sleeve segment;

the outer thread sleeve section is coaxially arranged at one end of the light sleeve section, the outer thread is arranged on the outer side wall of the outer thread sleeve section, the outer thread sleeve section passes through the outer thread and the internal thread connection, and the outer side wall of the light sleeve section is abutted to the inner side wall of the negative electrode outer connecting sleeve.

Optionally, the light sleeve segment is disposed proximate to the positive electrode assembly opposite the externally threaded sleeve segment.

Optionally, at an end of the light sleeve segment remote from the externally threaded sleeve segment, a chamfer is provided at an inner wall of the light sleeve segment.

Optionally, the axial dimension of the built-in part is smaller than the axial dimension of the cathode outer connecting sleeve, the anode inner connecting sleeve is partially inserted into the accommodating cavity and abutted against the inner side wall of the accommodating cavity, and the anode inner connecting sleeve can be hermetically connected with the inner side wall of the cathode outer connecting sleeve.

Optionally, a sealing ring is sleeved on the outer side of the part, which does not extend into the accommodating cavity, of the positive electrode inner connecting sleeve, and the positive electrode inner connecting sleeve is in sealing connection with the inner side wall of the negative electrode outer connecting sleeve through the sealing ring.

Optionally, a sealing ring placing groove is arranged on the outer side of the positive electrode inner connecting sleeve, and the sealing ring is arranged in the sealing ring placing groove.

Optionally, the material of the built-in piece is plastic.

Optionally, the material of the built-in piece is PA.

Optionally, a heat dissipation groove is formed in the side wall of the negative electrode outer connecting sleeve.

The utility model provides a photovoltaic connector is when using, and in the contact pin inserted the plug bush, anodal in-connection cover pegged graft to the holding intracavity of built-in and with the inside wall butt in holding chamber. Photovoltaic connector is in the course of the work, contact pin and plug bush are heating element, the heat that the two produced transmits to anodal in-connection adapter sleeve earlier, then anodal in-connection adapter sleeve transmits the heat for built-in, because the coefficient of heat conductivity of built-in is higher than the coefficient of heat conductivity of anodal in-connection adapter sleeve, and the inside wall butt in anodal in-connection adapter sleeve and holding chamber, built-in and negative pole outer joint cover threaded connection, thereby make the built-in can transmit the heat of anodal in-connection adapter sleeve for negative pole outer joint sleeve fast, realize heating element's quick heat dissipation, thereby make photovoltaic connector can adapt to the higher photovoltaic module's of rated current use.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a photovoltaic connector provided in an embodiment of the present invention;

FIG. 2 is a cross-sectional view of section A-A of FIG. 1;

FIG. 3 is a schematic view of a portion of the structure of FIG. 2

Fig. 4 is a schematic cross-sectional structural view of a positive electrode assembly according to an embodiment of the present invention;

fig. 5 is a schematic cross-sectional view illustrating a built-in component disposed in a negative electrode assembly according to an embodiment of the present invention;

FIG. 6 is a schematic view of the insert of FIG. 5 shown with the insert hidden;

fig. 7 is a schematic cross-sectional view of a built-in part according to an embodiment of the present invention;

fig. 8 is an external schematic structural view of the insert according to an embodiment of the present invention.

In the figure:

1. a positive electrode assembly; 11. a positive electrode body; 111. a positive electrode inner connecting sleeve; 1111. a seal ring; 12. a positive nut;

2. a negative electrode assembly; 21. a negative electrode body; 211. a negative electrode outer connecting sleeve; 22. a negative nut;

3. inserting a pin;

4. inserting a sleeve;

5. a built-in part; 51. a light sleeve segment; 52. an externally threaded sleeve segment.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 8, the present embodiment provides a photovoltaic connector, which has good heat dissipation performance and can adapt to a photovoltaic module with a higher rated current.

Referring to fig. 1 to 5, in the present embodiment, the photovoltaic connector includes a positive electrode assembly 1, a negative electrode assembly 2, a pin 3, a socket 4, and a built-in member 5.

The positive electrode assembly 1 includes a positive electrode body 11, and a positive electrode inner connecting sleeve 111 is disposed at one end of the positive electrode body 11.

The negative pole subassembly 2 includes negative pole body 21, and the one end of negative pole body 21 is provided with negative pole outer connecting sleeve 211, and the inside wall of negative pole outer connecting sleeve 211 is provided with the internal thread.

The pin 3 is arranged in the negative electrode body 21 and one end of the pin is positioned in the negative electrode outer connecting sleeve 211.

The plug bush 4 is arranged in the anode body 11, one end of the plug bush is tightly sleeved in the anode inner connecting sleeve 111, and the pin 3 can be plugged in the plug bush 4.

Be provided with the holding chamber that both ends link up in the built-in 5, the lateral wall of built-in 5 be provided with interior screw-thread fit's external screw thread, built-in 5 locates negative pole adapter sleeve 211 through the external screw thread cover in, there is the clearance between the inside wall of contact pin 3 and built-in 5, anodal in-connection cover 111 can peg graft to the holding intracavity and with the inside wall butt in holding chamber, the coefficient of heat conductivity of built-in 5 is higher than the coefficient of heat conductivity of anodal in-connection cover 111.

In the prior art, the photovoltaic connector has no built-in component 5, which is generally a positive electrode inner connecting sleeve sleeved in a negative electrode outer connecting sleeve, and the heat of the heating element is transferred to the negative electrode outer connecting sleeve through the positive electrode inner connecting sleeve, so as to realize the heat dissipation of the heating element.

When the photovoltaic connector provided by the embodiment is used, the inserting pin 3 is inserted into the inserting sleeve 4, and the positive electrode inner connecting sleeve 111 is inserted into the accommodating cavity of the built-in part 5 and is abutted against the inner side wall of the accommodating cavity. Photovoltaic connector is in the course of the work, contact pin 3 and plug bush 4 are heating element, the heat that the two produced transmits to anodal in-connection cover 111 earlier, then anodal in-connection cover 111 gives built-in 5 with heat transfer, because the coefficient of heat conductivity of built-in 5 is higher than the coefficient of heat conductivity of anodal in-connection cover 111, and the inside wall butt in anodal in-connection cover 111 and the holding chamber, built-in 2 and negative pole outer joint cover 211 threaded connection, thereby make built-in 2 can be fast with anodal in-connection cover 111 heat transfer for negative pole outer joint cover 211, realize heating element's quick heat dissipation.

Specifically, in the present embodiment, the pin 3 and the socket 4 are both made of metal.

Further, one end of the positive electrode body 11, which is far away from the negative electrode body 21, is provided with a positive electrode nut 12; the end of the negative electrode body 21 remote from the positive electrode body 11 is provided with a negative electrode nut 22.

Further, referring to fig. 5-8, in the present embodiment, the inner member 5 is an integrally formed structure including a light sleeve segment 51 and an externally threaded sleeve segment 52.

The one end of light sleeve section 51 is located to the external screw thread cover barrel section 52 is coaxial, and the lateral wall of external screw thread cover barrel section 52 is located to the external screw thread, and external screw thread cover barrel section 52 passes through external screw thread and female connection, and the lateral wall of light sleeve section 51 and the inside wall butt of negative pole outer joint cover 211.

By providing the light sleeve section 51, the axial length of the external thread is reduced, so that the insert 5 can be quickly mounted into the negative outer connection sleeve 211.

Preferably, in this embodiment, light sleeve segment 51 is disposed adjacent to positive electrode assembly 1 relative to externally threaded sleeve segment 52. Correspondingly, the internal thread in the negative electrode external connection sleeve 211, which is engaged with the external thread sleeve section 52, is also arranged away from the port of the negative electrode external connection sleeve 211, further enabling the built-in part 5 to be quickly installed in the negative electrode external connection sleeve 211.

Further, in order to ensure that the plug bush 4 can rapidly enter the accommodating cavity and be plugged with the plug pin 3, in this embodiment, a chamfer is provided on the inner wall of the optical sleeve segment 51 at one end of the optical sleeve segment 51 far away from the external thread sleeve segment 52.

Preferably, the axial dimension of the built-in part 5 is smaller than the axial dimension of the negative electrode outer connecting sleeve 211, the positive electrode inner connecting sleeve 111 is partially inserted into the accommodating cavity and is abutted against the inner side wall of the accommodating cavity, and the positive electrode inner connecting sleeve 111 can be hermetically connected with the inner side wall of the negative electrode outer connecting sleeve 211, so that the waterproof performance of the photovoltaic connector is ensured.

Further, the outer side of the part of the positive inner connecting sleeve 111 which does not extend into the accommodating cavity is sleeved with a sealing ring 1111, and the positive inner connecting sleeve 111 is hermetically connected with the inner side wall of the negative outer connecting sleeve 211 through the sealing ring 1111. Specifically, a seal ring receiving groove is provided on the outer side of the positive electrode inner sleeve 111, and the seal ring 111 is provided in the seal ring receiving groove.

Specifically, in the present embodiment, the material of the embedded component 5 is plastic. Optionally, the material of the insert 5 is PA (Polyamide), i.e. nylon. The PA contains glass fibers, has good heat conducting property and heat resistance, can quickly reduce the working temperature of the photovoltaic connector, and simultaneously improves the overall heat deformation resistance of the photovoltaic connector.

Alternatively, the positive electrode assembly 1 and the negative electrode assembly 2 may be made of PPE (polyphenylene ether) or PC (Polycarbonate).

When the anode assembly 1 and the cathode assembly 2 are made of PPE, the PPE has good insulating property and can ensure the use of a 1500V system; meanwhile, the built-in part 5 contains glass fibers, so that the heat conducting performance and the heat resistance are good, the working temperature of the photovoltaic connector can be quickly reduced, and the overall heat deformation resistance of the photovoltaic connector is improved.

When the anode assembly 1 and the cathode assembly 2 are made of PC, the thermal deformation temperature of the PC material is higher; the insulation performance of the PA is the insulation performance of the PC, so that the insulation performance inside the photovoltaic connector can be increased, and the photovoltaic connector can meet the use requirement of a 1500V system.

In this embodiment, the built-in part 5 is added in the photovoltaic connector, so that the thermal deformation temperature of the photovoltaic connector can be increased, the insulation performance of the photovoltaic connector is enhanced, and the use reliability of the photovoltaic connector is ensured.

Optionally, in order to further increase the heat dissipation capability of the photovoltaic connector, in this embodiment, a heat dissipation groove is disposed on the sidewall of the negative electrode outer connection sleeve 211. Through setting up the heat dissipation recess, reduced the thickness of negative pole outer connecting sleeve 211, be favorable to the heat to be dispelled fast.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A photovoltaic connector, comprising:

the positive electrode assembly (1) comprises a positive electrode body (11), wherein one end of the positive electrode body (11) is provided with a positive electrode inner connecting sleeve (111);

the negative electrode assembly (2) comprises a negative electrode body (21), one end of the negative electrode body (21) is provided with a negative electrode outer connecting sleeve (211), and the inner side wall of the negative electrode outer connecting sleeve (211) is provided with internal threads;

the contact pin (3) is arranged in the negative electrode body (21), and one end of the contact pin is positioned in the negative electrode outer connecting sleeve (211);

the plug bush (4) is arranged in the anode body (11), one end of the plug bush is tightly sleeved in the anode inner connecting sleeve (111), and the contact pin (3) can be plugged in the plug bush (4);

built-in (5), be provided with the holding chamber that both ends link up in built-in (5), the lateral wall of built-in (5) be provided with interior screw-thread fit's external screw thread, built-in (5) pass through the external screw thread cover is located in negative pole outer joint cover (211), anodal in-connection cover (111) can peg graft extremely the holding intracavity and with the inside wall butt in holding chamber, the coefficient of heat conductivity of built-in (5) is higher than the coefficient of heat conductivity of anodal in-connection cover (111).

2. Photovoltaic connector according to claim 1, characterized in that the insert (5) is of one-piece construction comprising:

a light sleeve segment (51);

external screw thread cover barrel section (52), coaxial locating the one end of light sleeve barrel section (51), the external screw thread is located the lateral wall of external screw thread cover barrel section (52), external screw thread cover barrel section (52) pass through the external screw thread with female connection, the lateral wall of light sleeve barrel section (51) with the inside wall butt of negative pole outer joint cover (211).

3. The photovoltaic connector according to claim 2, wherein the light sleeve segment (51) is arranged close to the positive electrode assembly (1) with respect to the externally threaded sleeve segment (52).

4. The photovoltaic connector according to claim 3, characterized in that at the end of the light sleeve segment (51) remote from the externally threaded sleeve segment (52) a chamfer is provided at the inner wall of the light sleeve segment (51).

5. The photovoltaic connector according to claim 1, wherein the axial dimension of the built-in part (5) is smaller than the axial dimension of the negative electrode outer connecting sleeve (211), the positive electrode inner connecting sleeve (111) is partially inserted into the accommodating cavity and is abutted against the inner side wall of the accommodating cavity, and the positive electrode inner connecting sleeve (111) can be hermetically connected with the inner side wall of the negative electrode outer connecting sleeve (211).

6. The photovoltaic connector according to claim 5, wherein a sealing ring (1111) is sleeved on the outer side of the portion of the positive inner connecting sleeve (111) which does not extend into the accommodating cavity, and the positive inner connecting sleeve (111) is hermetically connected with the inner side wall of the negative outer connecting sleeve (211) through the sealing ring (1111).

7. The photovoltaic connector according to claim 6, wherein a sealing ring placing groove is provided on an outer side of the positive electrode inner connecting sleeve (111), and the sealing ring (1111) is provided in the sealing ring placing groove.

8. Photovoltaic connector according to any one of claims 1 to 7, characterized in that the insert (5) is made of plastic.

9. The photovoltaic connector according to claim 8, characterized in that the insert (5) is made of PA.

10. The photovoltaic connector according to any one of claims 1 to 7, wherein the side wall of the negative outer connecting sleeve (211) is provided with a heat dissipation groove.