CN112713431A - High-reliability and excellent-electrical-performance photovoltaic system connector - Google Patents
High-reliability and excellent-electrical-performance photovoltaic system connector Download PDFInfo
- Publication number
- CN112713431A CN112713431A CN202110039929.5A CN202110039929A CN112713431A CN 112713431 A CN112713431 A CN 112713431A CN 202110039929 A CN202110039929 A CN 202110039929A CN 112713431 A CN112713431 A CN 112713431A
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- China
- Prior art keywords
- plug
- insulating
- bush
- shell
- photovoltaic system
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/50—Bases; Cases formed as an integral body
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
- H01R13/5804—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part
Abstract
The invention provides a photovoltaic system connector with high reliability and excellent electrical performance, which comprises a male plug and a female plug, wherein the male plug and the female plug respectively comprise a shell, a nut connected with the shell, a cable lock catch and a gasket which are arranged inside the nut, an insulating plug bush and a metal terminal which are arranged in the shell; female plug bush and public plug pin include the cable conductor riveting portion, and the circumferencial direction that adjoins the cable conductor riveting portion on female plug bush and the public plug pin is equipped with protruding structure, and the other end is the toper structure including two at least card lamellas, from the plug bush body to the open end direction of toper structure, extends a plurality of protruding portions that have certain length and width. The photovoltaic system connector disclosed by the invention can ensure the structural strength of the connector, can also obviously increase the creepage distance of the connector, improves the electrical performance of the connector, can ensure the assembly precision and the connection reliability of components, and avoids the problem that a cable and the connector are loosened.
Description
Technical Field
The invention relates to the technical field of electric connectors, in particular to a photovoltaic system connector with high reliability and excellent electrical performance.
Background
With global climate change and the increasing severity of environmental pollution problems caused by traditional fossil energy, the green renewable energy industry has been rapidly developing over the last decade. Solar energy is a renewable resource, and solar cell technology for generating electricity by utilizing photovoltaic effect is well-paid attention by people. The solar cell is made of materials capable of generating photovoltaic effect, such as silicon, gallium arsenide, indium selenium copper and the like, and can convert light energy into electric energy. At present, a photovoltaic module formed by combining a plurality of solar cells is widely used for building various photovoltaic power generation systems or building curtain walls to build energy-saving and environment-friendly buildings.
The photovoltaic power generation system needs to connect a plurality of photovoltaic modules to form a photovoltaic module array through cables so as to output large voltage outwards, an electric connector is an indispensable device for connecting the photovoltaic modules, conductive copper terminals are arranged in a male plug and a female plug of the connector, and the copper terminals in the electric connector are mainly designed according to the requirement of electrical safety at present, namely certain electrical clearance and creepage distance need to be met; in addition, it needs to be guaranteed that after the cable is connected with the copper terminal, the copper terminal cannot be loosened and displaced in the connector shell or even pulled out of the connector shell due to external pulling force, otherwise the safe use of the whole photovoltaic module and the photovoltaic array is affected.
Referring to fig. 1, taking the female plug of the currently used photovoltaic system connector as an example, in order to prevent the copper terminal 11 from being pulled loose or pulled out by the cable fixedly connected with the copper terminal 11, a barb structure 112 is designed on the copper terminal 11, in addition, a metal collar 12 'is sleeved outside the copper terminal 11 during installation, an inward concave card 122' is arranged on the metal collar 12 ', after the copper terminal 11 passes through the metal collar 12', the barb structure 112 is abutted by the card 122 ', and the metal collar 12' is limited inside the male plug housing 10, so that the copper terminal 10 is not easy to be pulled out. The design can ensure the use requirement of the connector under the condition that the electrical performance requirement of the connector is not particularly high, but along with the wide use of high-power photovoltaic group price and photovoltaic systems, the electrical performance requirement of the connector is higher and higher, the product standard is stricter and stricter, and the design of the metal collar can not improve the electrical performance of the connector, particularly the creepage distance is far less than the standard requirement; and the connector loosening prevention capability is not excellent.
Disclosure of Invention
In view of the above-mentioned requirements of the photovoltaic system connector in application, the present invention provides an improved connector for photovoltaic system, which can significantly improve the electrical performance of the connector and ensure the reliability of the connector connection, and prolong the service life.
In order to achieve the purpose of the invention, the photovoltaic system connector with high reliability and excellent electrical performance comprises a male plug and a female plug, wherein the male plug comprises a male plug shell, a nut in threaded connection with the male plug shell, a cable lock catch and a gasket which are arranged inside the nut, and an insulating plug bush and a male plug pin which are arranged in the male plug shell; the female plug comprises a female plug shell, a nut in threaded connection with the female plug shell, a cable lock catch and a gasket which are arranged inside the nut, and an insulating plug bush and a female plug bush which are arranged in the female plug shell;
the female plug bush and the male plug pin comprise cable riveting parts, and protruding structures are arranged on the female plug bush and the male plug pin in the circumferential direction adjacent to the cable riveting parts;
one end of the insulating plug bush is in fit abutment with the gasket, a bulge structure is arranged at the position adjacent to the end part along the circumferential direction, and after the insulating plug bush is inserted into the male plug shell and the female plug shell, the bulge structure is matched and fixed with a groove on the shell corresponding to the position and structure of the bulge structure; the other end of the insulating plug bush is of a conical structure comprising at least two clamping petals, and the opening end face of the conical structure is of a non-closed structure, so that the male plug pin, the female plug bush and the insulating plug bush can be conveniently assembled; after the male plug pin and the female plug sleeve are inserted into the insulating plug sleeve, the convex structure is abutted to the clamping petal;
a plurality of protruding parts with certain length and width extend from the plug bush body to the opening end of the conical structure along the circumferential direction on the insulating plug bush at the joint of the plug bush body and the conical structure; correspondingly, step structures are arranged inside the male plug shell and the female plug shell, and when the insulating plug bush is installed in the male plug shell and the female plug shell, the protruding portion is abutted to the step structures, so that the installation position of the insulating plug bush is limited.
Preferably, the middle part of female plug bush is equipped with a plurality of depressed parts along the circumferencial direction interval is even, when public contact pin and female plug bush are pegged graft, depressed part and the inseparable butt of public contact pin.
Preferably, the convex structure can be a plurality of convex parts which are evenly spaced or a whole circle of convex structure in the circumferential direction.
More preferably, a plurality of notch structures are uniformly provided at intervals in the circumferential direction from the end of the insulating sleeve to the position of the bulging structure.
Still preferably, a plurality of the protrusions are uniformly spaced.
Preferably, the length of the insulating plug bush is 2-4 cm.
Preferably, the number of the clamping petals at one end of the insulating plug bush is four, and the clamping petals are uniformly distributed at intervals along the circumferential direction.
Preferably, the angle between the clamping petal at one end of the insulating plug bush and the axial direction of the insulating plug bush is 10-45 degrees.
Still preferably, the angle between the clamping petal at one end of the insulating plug bush and the axial direction of the insulating plug bush is 15-30 degrees.
Preferably, the length of the conical structure at one end of the insulating plug bush accounts for 1/4-1/2 of the total length of the insulating plug bush.
According to the photovoltaic system connector with high reliability and excellent electrical performance, the copper terminal of the connector is fixed and prevented from being pulled out by adopting the insulating plug bush which is integrally formed by insulating materials and has a clamping flap structure at one end and a certain length, so that the structural strength of the connector can be ensured, the creepage distance of the connector can be obviously increased, the electrical performance of the connector is improved, the connector is adapted to the higher standard use requirement of a photovoltaic system, the service life of the connector is prolonged, and the more serious photovoltaic system safety accident is avoided; the insulating plug bush is provided with the bulging structure and the limiting protruding part, so that the assembly precision and the connection reliability of the parts can be ensured, and the problem that the cable and the connector are loosened is avoided.
Drawings
The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings. Wherein:
fig. 1 is a schematic diagram illustrating a male plug structure of a photovoltaic system connector in the prior art;
FIG. 2 is a schematic diagram of an exploded view of the photovoltaic system connector of the present invention;
fig. 3 is a schematic structural view of a female terminal (plug bush) of the photovoltaic system connector according to the present invention;
FIG. 4 is a schematic view of the structure of the insulating insert of the photovoltaic system connector of the present invention;
FIG. 5 is a front view of the photovoltaic system connector of FIG. 2 in an assembled configuration (with the lower nut tightened);
FIG. 6 is a side view of the photovoltaic system connector of FIG. 2 in an assembled configuration (shown without the lower nut tightened);
fig. 7 is a schematic view of the cross-sectional structure a-a of fig. 6.
Detailed Description
The structural features and advantages of the present invention are described in detail below with reference to the accompanying drawings.
Referring to fig. 2, the photovoltaic system connector with high reliability and excellent electrical performance of the present invention includes a male plug and a female plug, where the male plug includes a male plug housing 9, a nut 1 in threaded connection with the male plug housing, a cable lock 2 and a gasket 3 disposed inside the nut 1, an insulating plug bush 7 disposed inside the male plug housing 9, and a male plug pin 8; female inserting including female casing 4 of inserting, with female nut 1 who inserts 4 threaded connection of casing, locate 1 inside cable hasp 2 and the packing ring 3 of nut, locate female insulating plug bush 7 and female plug bush 5 of inserting in the casing 4.
Referring to the schematic structural diagram of the female plug bush 5 shown in fig. 3, the female plug bush comprises a cable riveting portion 503 and a bush body, wherein a plurality of concave portions 501 are uniformly arranged in the middle of the bush body at intervals along the circumferential direction, and when the male plug pin 8 is plugged into the female plug bush 5, the concave portions 501 are tightly abutted to the male plug pin 8; a raised structure 502 is arranged in the circumferential direction adjacent to the cable riveting part 503, and the raised structure 502 can be a plurality of raised parts with uniform intervals or a whole circle raised structure in the circumferential direction; similarly, referring to fig. 7, the male pin 8 is provided with a similar protrusion structure 802.
Referring to the structural schematic diagram of the insulating plug bush 7 shown in fig. 4, and referring to fig. 7, one end of the insulating plug bush 7 is in fit abutment with the gasket 3, and a bulging structure 701 is arranged at a position adjacent to the end along the circumferential direction, and after the insulating plug bush 7 is inserted into the male plug housing 9 and the female plug housing 4, the bulging structure 701 is in fit with the grooves 907 and 407 on the housings corresponding to the position and structure of the bulging structure, so that the reliability of component connection is improved, and the insulating plug bush is prevented from being pulled out or displaced; in another preferred embodiment, in order to improve the convenience of assembling the components, a plurality of notch structures 702 are uniformly arranged at intervals from the end part to the position of the drum structure 701, so that when the insulating plug bush is inserted into the shell of the connector, the bulging structure 701 can be contracted for insertion, and the bulging structure 701 and the concave groove 407 can be automatically opened after being clamped and assembled in place, so that the bulging structure 701 and the concave grooves 407 and 907 are tightly attached; the other end of the insulating plug bush 7 is of a conical structure comprising at least two clamping petals 705, and the opening end face of the conical structure is of a non-closed structure, so that the assembly of a contact pin, the plug bush and the insulating plug bush can be facilitated; after the male plug pin 8 is inserted into the insulating plug bush 7, the convex structure 802 abuts against the clip 705, so that the male plug pin 8 is prevented from being pulled out of the male plug shell 10 or loosened due to external pulling force; similarly, when the female plug 5 is inserted into the insulating plug 7, the protrusion 502 abuts against the locking flap 705, so as to prevent the female plug 5 from being pulled out of the female plug housing 4 or loosened due to external pulling force.
In another preferred embodiment, referring to fig. 4, a plurality of protrusions 703 with a certain length and width extend from the plug bush body to the opening end of the tapered structure along the circumferential direction at the connection position of the plug bush body and the tapered structure on the insulating plug bush 7, and correspondingly, referring to fig. 7, step structures 903 and 403 are arranged on the male plug shell 9 and the female plug shell 4, when the insulating plug bush is installed in the male plug shell 9 and the female plug shell 4, the protrusions 703 abut against the step structures 903 and 403 to limit the installation position of the insulating plug bush, so as to prevent the insulating plug bush from sinking after being assembled to cause the metal pin or the plug bush to be unable to be assembled, and ensure the assembly accuracy of each component of the connector.
The improved photovoltaic system connector with high reliability and excellent electrical performance takes the insulating plug bush with a certain length as a stop element for preventing the copper terminal (namely, a male plug pin and a female plug bush) of the connector from being pulled out, the end part of the insulating plug bush is of a conical structure with a plurality of clamping petal structures, and the end surface of the insulating plug bush is of a non-closed structure, so that the copper terminal can be conveniently inserted into and a protruding structure on the copper terminal can conveniently pass through; the insulating plug bush is provided with a bulging structure and a limiting protruding part, so that the assembly precision and the connection reliability of the components can be ensured; in addition, the insulating plug bush has a certain length, so that the creepage distance can be obviously increased, the electrical performance of the connector is improved, and the application requirements of a high-power photovoltaic assembly and a photovoltaic system are met.
In a preferred embodiment, the length of the insulating plug bush is 2-4 cm.
In a preferred embodiment, the insulating plug bush is formed by integrally molding insulating plastic.
In another preferred embodiment, four locking lobes 705 are provided at one end of the insulating sleeve, and are evenly spaced along the circumference.
In another preferred embodiment, the angle between the locking lobe 705 at one end of the insulating sleeve and the axial direction of the insulating sleeve is 10-45 °, more preferably 15-30 °.
In another preferred embodiment, the length of the tapered structure at one end of the insulating sleeve accounts for 1/4-1/2 of the total length of the insulating sleeve, taking into account the strength and elasticity of the snap structure.
In another preferred embodiment, a sealing O-shaped ring 6 is arranged between the male plug and the female plug of the connector.
According to the photovoltaic system connector with high reliability and excellent electrical performance, the metal terminal of the connector is fixed and prevented from being pulled out by the insulating plug bush which is made of insulating materials and has a clamping petal structure at one end and has a certain length, so that the structural strength of the connector can be ensured, the creepage distance of the connector can be obviously increased, the electrical performance of the connector is improved, the connector meets the higher standard use requirement of a photovoltaic system, the service life of the connector is prolonged, and the more serious safety accident of the photovoltaic system is avoided; the insulating plug bush is provided with the bulging structure and the limiting protruding part, so that the assembly precision and the connection reliability of the parts can be ensured, and the problem that the cable and the connector are loosened is avoided.
The present invention is not limited to the embodiments described above, and those skilled in the art may make modifications or changes within the scope of the disclosure without departing from the spirit of the present invention, so that the scope of the present invention is defined by the appended claims.
Claims (10)
1. The photovoltaic system connector is characterized by comprising a male plug and a female plug, wherein the male plug comprises a male plug shell, a nut in threaded connection with the male plug shell, a cable lock catch and a gasket which are arranged inside the nut, and an insulating plug bush and a male plug pin which are arranged in the male plug shell; the female plug comprises a female plug shell, a nut in threaded connection with the female plug shell, a cable lock catch and a gasket which are arranged inside the nut, and an insulating plug bush and a female plug bush which are arranged in the female plug shell;
the female plug bush and the male plug pin comprise cable riveting parts, and protruding structures are arranged on the female plug bush and the male plug pin in the circumferential direction adjacent to the cable riveting parts;
one end of the insulating plug bush is in fit abutment with the gasket, a bulge structure is arranged at the position adjacent to the end part along the circumferential direction, and after the insulating plug bush is inserted into the male plug shell and the female plug shell, the bulge structure is matched and fixed with a groove on the shell corresponding to the position and structure of the bulge structure; the other end of the insulating plug bush is of a conical structure comprising at least two clamping petals, and the opening end face of the conical structure is of a non-closed structure, so that the male plug pin, the female plug bush and the insulating plug bush can be conveniently assembled; after the male plug pin and the female plug sleeve are inserted into the insulating plug sleeve, the convex structure is abutted to the clamping petal;
a plurality of protruding parts with certain length and width extend from the plug bush body to the opening end of the conical structure along the circumferential direction on the insulating plug bush at the joint of the plug bush body and the conical structure; correspondingly, step structures are arranged inside the male plug shell and the female plug shell, and when the insulating plug bush is installed in the male plug shell and the female plug shell, the protruding portion is abutted to the step structures, so that the installation position of the insulating plug bush is limited.
2. The highly reliable photovoltaic system connector with excellent electrical characteristics as claimed in claim 1, wherein the female plug housing has a plurality of recesses formed in the middle thereof at regular intervals along the circumferential direction, and the recesses are in close contact with the male plug pin when the male plug pin is inserted into the female plug housing.
3. The highly reliable and electrically superior photovoltaic system connector of claim 1 or 2, wherein the raised structure is a plurality of raised portions evenly spaced or a full circle raised structure in a circumferential direction.
4. The highly reliable photovoltaic system connector excellent in electrical characteristics as set forth in claim 1, wherein a plurality of notch structures are provided at regular intervals in a circumferential direction from an end of the insulating sleeve to a position of the bulging structure.
5. The highly reliable photovoltaic system connector excellent in electrical characteristics as set forth in claim 1, wherein said plurality of protrusions are arranged at regular intervals.
6. The highly reliable and electrically superior photovoltaic system connector of claim 1, wherein said insulating plug bush has a length of 2-4 cm.
7. The highly reliable photovoltaic system connector having excellent electrical characteristics as set forth in claim 1, wherein said insulating sleeve has four locking pieces at one end thereof, and said four locking pieces are arranged at regular intervals in a circumferential direction.
8. The highly reliable photovoltaic system connector excellent in electrical characteristics as set forth in claim 1, wherein an angle between said locking piece at one end of said insulating sleeve and an axial direction of said insulating sleeve is 10 to 45 °.
9. The highly reliable photovoltaic system connector having excellent electrical characteristics as set forth in claim 8, wherein said insulating sleeve has an end with said locking portion at an angle of 15-30 ° with respect to an axial direction of said insulating sleeve.
10. The highly reliable and electrically superior photovoltaic system connector of claim 1, wherein the tapered configuration at one end of the insulating sleeve has a length 1/4-1/2 of the total length of the insulating sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110039929.5A CN112713431B (en) | 2021-01-13 | 2021-01-13 | High-reliability and excellent-electrical-performance photovoltaic system connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110039929.5A CN112713431B (en) | 2021-01-13 | 2021-01-13 | High-reliability and excellent-electrical-performance photovoltaic system connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112713431A true CN112713431A (en) | 2021-04-27 |
| CN112713431B CN112713431B (en) | 2022-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110039929.5A Active CN112713431B (en) | 2021-01-13 | 2021-01-13 | High-reliability and excellent-electrical-performance photovoltaic system connector |
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| Country | Link |
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| CN (1) | CN112713431B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114628936A (en) * | 2022-03-30 | 2022-06-14 | 菲尼克斯亚太电气（南京）有限公司 | Connector housing with pin fixing structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205159581U (en) * | 2015-12-03 | 2016-04-13 | 广东顺科通信设备实业有限公司 | Jack catch cut straightly |
| CN210723522U (en) * | 2019-12-12 | 2020-06-09 | 苏州快可光伏电子股份有限公司 | Photovoltaic module connector adaptable to different wire diameters |
| CN112103692A (en) * | 2020-10-01 | 2020-12-18 | 苏州快可光伏电子股份有限公司 | Improved photovoltaic system connector with excellent electrical performance |
-
2021
- 2021-01-13 CN CN202110039929.5A patent/CN112713431B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205159581U (en) * | 2015-12-03 | 2016-04-13 | 广东顺科通信设备实业有限公司 | Jack catch cut straightly |
| CN210723522U (en) * | 2019-12-12 | 2020-06-09 | 苏州快可光伏电子股份有限公司 | Photovoltaic module connector adaptable to different wire diameters |
| CN112103692A (en) * | 2020-10-01 | 2020-12-18 | 苏州快可光伏电子股份有限公司 | Improved photovoltaic system connector with excellent electrical performance |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114628936A (en) * | 2022-03-30 | 2022-06-14 | 菲尼克斯亚太电气（南京）有限公司 | Connector housing with pin fixing structure |
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| Publication number | Publication date |
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| CN112713431B (en) | 2022-04-19 |
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