CN211239786U

CN211239786U - Junction box of solar cell module

Info

Publication number: CN211239786U
Application number: CN201922420195.6U
Authority: CN
Inventors: 劳增仕
Original assignee: Kanglian Precision Electromechanical Shenzhen Co ltd
Current assignee: Kanglian Precision Electromechanical Shenzhen Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-08-11
Anticipated expiration: 2029-12-27

Abstract

The utility model relates to a solar photovoltaic power generation field, concretely relates to solar battery component junction box, which comprises a box body, a diode arranged in the box body, two conducting strips arranged in the box body and respectively connected with two ends of the diode, and two external cables arranged outside the box body, wherein two side walls of the box body are respectively provided with a through hole for the external cables to pass through, and one end of each external cable respectively passes through the two through holes to be electrically connected with the two conducting strips; each conducting strip comprises a connecting part connected with the diode, a supporting part fixedly connected with one side of the connecting part in an L shape, and a heat radiating part horizontally connected with one side of the supporting part far away from the connecting part. The utility model discloses a solar module terminal box has the effect that improves the conducting strip radiating rate.

Description

Junction box of solar cell module

Technical Field

The utility model relates to a solar photovoltaic power generation field, concretely relates to solar module terminal box.

Background

The junction box of the solar cell module is very important in the composition of the solar cell module, and mainly plays a role in connecting electric power generated by the solar cell with an external circuit. Under general conditions, the junction box is bonded with a back plate of the solar cell module through silica gel, outgoing lines in the solar cell module are connected together through an internal circuit in the junction box, and the internal circuit is connected with an external cable to enable the module to be conducted with the external cable. The diode is arranged in the junction box, so that the component can work normally when being shielded from light.

Generally, the area of the conducting strip is generally reduced as much as possible in order to reduce the connecting area of the junction box and the back plate of the solar cell module in the prior art, but the area of the conducting strip is reduced to correspondingly reduce the heat dissipation area of the conducting strip, so that heat on the conducting strip cannot be dissipated timely, and the normal use of the junction box is influenced by overhigh temperature of the conducting strip.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a solar cell module junction box, which has the function of improving the heat dissipation speed of a heat conducting fin.

The utility model provides a technical scheme that its technical problem adopted is:

a junction box of a solar cell module comprises a box body, a diode arranged in the box body, two conducting strips arranged in the box body and respectively connected with two ends of the diode, and two external cables arranged outside the box body, wherein two side walls of the box body are respectively provided with through holes for the external cables to pass through, and one end of each of the two external cables respectively passes through the two through holes to be electrically connected with the two conducting strips;

each conducting strip comprises a connecting part connected with the diode, a supporting part fixedly connected with one side of the connecting part in an L shape, and a heat radiating part horizontally connected with one side of the supporting part far away from the connecting part.

Further, be equipped with the base in the box body, the chamber that holds that is used for holding the diode is seted up to the base, two holding tanks have been seted up to one side that the base is close to the chamber that holds, two the holding tank is located the double-phase offside that holds the chamber respectively, the holding tank is used for holding the connecting portion of conducting strip, the degree of depth and the high looks adaptation of conducting strip supporting part of holding tank, it is protruding to be equipped with a plurality of location on the base, the conducting strip has been seted up a plurality ofly and has been fixed a position.

Furthermore, one side interval that connecting portion are close to the diode is provided with two electrically conductive holding pieces, two one side that connecting portion were kept away from to the electrically conductive holding piece extends to the direction that is close to the connecting portion upper surface, two form between the electrically conductive holding piece with diode tip joint complex joint mouth.

Furthermore, a metal core is arranged at one end, close to the conducting strip, of the external cable, a conductive clamping portion is arranged at one side, close to the metal core, of the conducting strip, and a clamping groove matched with the metal core in a clamping mode is formed in the conductive clamping portion.

Further, the inner wall in joint groove is provided with many anticreep metal strips, many anticreep metal strip sets up along parallel metal core length direction equidistance interval.

Furthermore, the external cable is provided with a fixing component for fixing the external cable and the box body, the fixing component comprises a locking ring sleeved on the external cable and a buckle sleeved outside the locking ring, the locking ring comprises anti-rotation protrusions used for blocking the relative rotation of the buckle and the locking ring, the anti-rotation protrusions are arranged oppositely and protrude towards a direction far away from the center of the locking ring, the middle of the buckle is provided with a bayonet matched with the locking ring in a clamped mode, the two sides of the buckle are provided with limiting parts, the box body is provided with a clamping cavity matched with the clamping of the buckle and a limiting groove matched with the limiting part in a clamped mode, and the clamping cavity is communicated with the through hole.

Furthermore, one side of the buckle close to the through opening is provided with a waterproof ring, and the waterproof ring is tightly clamped with the through opening.

Furthermore, one end of one of the external cables, which is far away from the box body, is connected with an electric connecting piece, the electric connecting piece is provided with an insertion cavity for inserting an external electric connection plug, and one end of the other external cable, which is far away from the box body, is connected with an electric connecting end, and the electric connecting end is used for being inserted into an external electric connection socket.

Furthermore, clamping blocks for preventing the electric connection end from being separated from the external electric connection socket are arranged on two sides of the electric connection end.

Further, a mounting opening is formed in the upper surface of the box body, and a box cover is matched with the mounting opening in a clamping mode.

The utility model has the advantages that:

the utility model discloses a conducting strip is through setting up connecting portion, supporting part and radiating part, and according to the utility model discloses a connected mode connects, makes the conducting strip be "Z" type, compares in the current conducting strip that is the plane, on the one hand, the utility model discloses a conducting strip surface area is bigger, and heat radiating area is bigger, more is favorable to the conducting strip to dispel the heat fast, avoids the too high normal work that influences the terminal box of conducting strip heat; on the other hand, the utility model discloses a conducting strip's width is little, when installing it in the box body, can effectively reduce the width of box body, reduces the box body and at the shared area in solar module surface.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is an assembly schematic of an embodiment of the present invention;

fig. 2 is an exploded view of an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a conductive sheet according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of the bottom of the cartridge body of an embodiment of the present invention;

fig. 5 is a schematic structural diagram of the locking ring and the buckle according to the embodiment of the present invention.

Description of reference numerals: 10. a box body; 11. a clamping cavity; 12. a limiting groove; 13. an installation port; 14. a box cover; 15. perforating; 20. a diode; 30. a conductive sheet; 31. a connecting portion; 32. a support portion; 33. a heat dissipating section; 34. positioning holes; 35. a conductive clamping sheet; 36. a card interface; 37. a conductive clamping part; 38. a clamping groove; 39. an anti-drop metal strip; 40. connecting a cable externally; 41. a metal core; 42. an electrical connection; 43. an insertion cavity; 44. an electrical connection terminal; 45. a clamping block; 50. a base; 51. an accommodating chamber; 52. accommodating grooves; 53. positioning the projection; 54. a separating block; 60. a fixing assembly; 61. a locking ring; 62. buckling; 63. an anti-rotation boss; 64. a bayonet; 65. a limiting part; 70. and (4) a waterproof ring.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the connection/connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. The utility model discloses each technical feature in the creation can the interactive combination under the prerequisite that does not contradict conflict each other.

A junction box of a solar cell module is shown in figures 1 and 2 and comprises a box body 10, a diode 20 arranged in the box body 10, two conducting strips 30 arranged in the box body 10 and respectively connected with two ends of the diode 20, and two external cables 40 arranged outside the box body 10, wherein two side walls of the box body 10 in the length direction are respectively provided with a through hole 15 for the external cables 40 to pass through, and one end of each external cable 40 respectively passes through the two through holes 15 and is electrically connected with the two conducting strips 30. As shown in fig. 3, each of the conductive sheets 30 includes a connection portion 31 connected to the diode 20, a support portion 32 fixedly connected to one side of the connection portion 31 in an L shape, and a heat dissipation portion 33 horizontally connected to one side of the support portion 32 away from the connection portion 31.

The conducting strip 30 of the utility model is provided with the connecting part 31, the supporting part 32 and the radiating part 33, and is connected according to the connecting mode, so that the conducting strip 30 is Z-shaped, and compared with the existing conducting strip 30 which is a plane, on one hand, the conducting strip 30 of the utility model has larger surface area and larger radiating area, thereby being more beneficial to the rapid heat radiation of the conducting strip 30 and avoiding the normal work of the junction box influenced by the overhigh heat of the conducting strip 30; on the other hand, the utility model discloses a conducting strip 30's width is little, when installing it in box body 10, can effectively reduce the width of box body 10, reduces box body 10 at the shared area in solar module surface.

Further, as shown in fig. 2, a base 50 is arranged in the box body 10, a containing cavity 51 for containing the diode 20 is arranged on the base 50, two containing grooves 52 are arranged on one side of the base 50 close to the containing cavity 51, the two containing grooves 52 are respectively arranged on two opposite sides of the containing cavity 51, the containing grooves 52 are used for containing the connecting portions 31 of the conducting strips 30, the depth of the containing grooves 52 is matched with the height of the supporting portions 32 of the conducting strips 30, a plurality of positioning protrusions 53 are arranged on the base 50, and the conducting strips 30 are provided with a plurality of positioning holes 34 which are matched with the positioning protrusions 53 in a clamping manner.

The utility model discloses a set up base 50 in box body 10, and set up on base 50 and hold chamber 51 and two holding tanks 52, be used for installing diode 20 and two conducting strips 30 respectively, make base 50 and diode 20's shape and conducting strip 30's shape looks adaptation, make diode 20 and conducting strip 30 be difficult for taking place the displacement, still set up a plurality ofly on the base 50 with conducting strip 30 on locating hole 34 joint complex location arch 53, make conducting strip 30 be fixed in on the base 50, the condition that takes place great vibration and lead to conducting strip 30 displacement when avoiding the terminal box transportation takes place, be favorable to further guaranteeing conducting strip 30 and diode 20 and conducting strip 30 and external cable 40's connection stability, thereby guarantee the utility model discloses a terminal box can normally work.

Further, as shown in fig. 2, a separating block 54 is disposed on the base 50, and the separating block 54 is disposed between the heat dissipation portions 33 of the two conductive sheets 30, so as to ensure that the two conductive sheets 30 do not contact with each other, and avoid the occurrence of a situation that the junction box cannot normally operate due to the mutual contact of the heat dissipation portions 33 of the two conductive sheets.

Further, with reference to fig. 3, two conductive clamping pieces 35 are disposed at an interval on one side of the connecting portion 31 close to the diode 20, two conductive clamping pieces 35 extend towards a direction close to the upper surface of the connecting portion 31 on one side of the connecting portion 31, and two clamping interfaces 36 clamped and matched with the end portion of the diode 20 are formed between the conductive clamping pieces 35.

The setting up of electrically conductive holding piece 35 makes diode 20 and conducting strip 30 can dismantle the connection, and compares the mode that adopts the fixed conducting strip 30 of gluing agent and diode 20, the utility model discloses a setting up electrically conductive holding piece 35 and making the installation of diode 20 and conducting strip 30 and dismantle more convenient, quick, and because conducting strip 30 and diode 20's surface does not have the cover effect of gluing agent, make radiating rate between them faster. When the diode clamping device is used specifically, the end part of the diode 20 is inserted into the clamping interface 36 from top to bottom, so that the two clamping pieces clamp two sides of the end part of the diode 20, the upper surface of the conducting piece 30 is abutted to the lower surface of the end part of the diode 20, the connecting structure is stable, and the diode 20 is not easy to separate from the conducting piece 30.

Further, as shown in fig. 2 and 3, one end of the external cable 40 close to the conductive sheet 30 is provided with a metal core 41, one side of the conductive sheet 30 close to the metal core 41 is provided with a conductive clamping portion 37, and the conductive clamping portion 37 is provided with a clamping groove 38 clamped and matched with the metal core 41.

Carry out the joint through metal core 41 of joint groove 38 and external cable 40 and fix, compare and adopt welding or sticky fixed mode, the utility model discloses a metal core 41 and conducting strip 30 can be dismantled and connect, and the staff of being convenient for installs metal core 41, and the staff of also being convenient for changes or maintains metal core 41 or conducting strip 30.

Further, as shown in fig. 3, a plurality of anti-drop metal strips 39 are disposed on the inner wall of the clamping groove 38, and the plurality of anti-drop metal strips 39 are disposed at equal intervals along the length direction of the parallel metal core 41. The plurality of anti-dropping metal strips 39 can increase the frictional resistance between the conductive clamping portion 37 and the metal core 41, so that the clamping groove 38 further clamps the metal core 41, and the connection between the metal core 41 and the conductive clamping portion 37 is more stable.

Further, as shown in fig. 2, 4 and 5, a fixing assembly 60 for fixing the external cable 40 and the box body 10 is provided on the external cable 40, the fixing assembly 60 includes a locking ring 61 sleeved on the external cable 40 and a catch 62 sleeved outside the locking ring 61, the locking ring 61 includes anti-rotation protrusions 63 for blocking relative rotation of the catch 62 and the locking ring 61, and the two anti-rotation protrusions 63 are oppositely disposed and protrude in a direction away from the center of the locking ring 61. The middle part of the buckle 62 is provided with a bayonet 64 matched with the lock ring 61 in a clamping manner, the two sides of the buckle 62 are provided with a limiting part 65, the box body 10 is provided with a clamping cavity 11 matched with the buckle 62 in a clamping manner and a limiting groove 12 matched with the limiting part 65 in a clamping manner, and the clamping cavity 11 is communicated with the through hole 15.

During the use, locate external cable 40 with catch 61 cover on, then with catch 61 joint in the bayonet socket 64 of buckle 62, in following up 62 joint income joint chamber 11 with buckle 62 joints to make the spacing portion 65 card of buckle 62 locate spacing groove 12, make external cable 40 and box body 10 firm and be connected, the difficult emergence phenomenon of breaking away from guarantees external cable 40's metal core 41 and conducting strip 30 stable connection.

Further, in order to improve the utility model discloses a waterproof performance of terminal box, one side that buckle 62 is close to wearing a mouthful 15 is equipped with waterproof circle 70, waterproof circle 70 with wear a mouthful 15 inseparable joint, improved the waterproof performance of box body 10 inner wall, avoid the rainwater to get into and lead to the internal element phenomenon of short circuit to appear in the box body 10.

Further, in order to facilitate the electrical connection of the junction box of the present invention with an external circuit, as shown in fig. 1 and 2, one end of the external cable 40, which is far away from the box body 10, is connected with an electrical connector 42, the electrical connector 42 is provided with an insertion cavity 43 for inserting an external electrical connection plug, and the other end of the external cable 40, which is far away from the box body 10, is connected with an electrical connection end 44, and the electrical connection end 44 is used for inserting an external electrical connection socket. Specifically, the structure of outside electricity connection plug is the same with the utility model discloses an electrical connection end 44, the structure of outside electricity connection socket is the same with the utility model discloses an electrical connector 42's structure.

Further, two sides of the electrical connection end 44 are provided with a latch 45 for blocking the electrical connection end 44 from being detached from the external electrical connection socket, which is beneficial to improving the connection stability between the electrical connection end 44 and the electrical connection socket, specifically, the latch 45 is an elastic latch 45.

Further, as shown in fig. 2, a mounting opening 13 is formed in the upper surface of the box body 10, a box cover 14 is clamped and matched at the mounting opening 13, and the box cover 14 is conveniently opened by a worker through clamping and matching to overhaul components inside the box body 10.

While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.

Claims

1. A solar module junction box is characterized in that: the LED lamp box comprises a box body, a diode arranged in the box body, two conducting strips arranged in the box body and respectively connected with two ends of the diode, and two external cables arranged outside the box body, wherein two side walls of the box body are respectively provided with a through hole for the external cables to pass through, and one end of each of the two external cables respectively passes through the two through holes and is electrically connected with the two conducting strips;

2. The solar module junction box of claim 1, wherein: be equipped with the base in the box body, the chamber that holds that is used for holding the diode is seted up to the base, two holding tanks have been seted up to one side that the base is close to the chamber that holds, two the holding tank is located the double-phase offside that holds the chamber respectively, the holding tank is used for holding the connecting portion of conducting strip, the degree of depth and the high looks adaptation of conducting strip supporting part of holding tank, it is protruding to be equipped with a plurality of location on the base, the conducting strip has been seted up a plurality ofly and has been fixed.

3. The solar module junction box of claim 1, wherein: one side interval that connecting portion are close to the diode is provided with two electrically conductive holding pieces, two one side that connecting portion were kept away from to the electrically conductive holding piece extends to the direction that is close to the connecting portion upper surface, two form between the electrically conductive holding piece with diode tip joint complex joint mouth.

4. The solar module junction box of claim 1, wherein: the cable comprises an external cable and a conducting strip, wherein the conducting strip is arranged on the outer side of the external cable, the conducting strip is arranged on the.

5. The solar module junction box of claim 4, wherein: the inner wall in joint groove is provided with many anticreep metal strips, many the anticreep metal strip sets up along parallel metal core length direction equidistance interval.

6. The solar module junction box of claim 1, wherein: the anti-rotation clamping device is characterized in that a fixing assembly used for fixing an external cable and a box body is arranged on the external cable, the fixing assembly comprises a locking ring sleeved on the external cable and a buckle sleeved outside the locking ring, the locking ring comprises anti-rotation protruding portions used for blocking the buckle and the locking ring to rotate relatively, the anti-rotation protruding portions are arranged relatively and protrude towards the direction far away from the center of the locking ring, a bayonet matched with the locking ring in a clamped mode is arranged in the middle of the buckle, limiting portions are arranged on two sides of the buckle, a clamping cavity matched with the buckle in a clamped mode and a limiting groove matched with the limiting portion in a clamped mode are arranged on the box body, and the clamping cavity.

7. The solar module junction box of claim 6, wherein: one side of the buckle close to the through opening is provided with a waterproof ring, and the waterproof ring is tightly clamped with the through opening.

8. The solar module junction box of claim 1, wherein: one end of one of the external cables, which is far away from the box body, is connected with an electric connecting piece, the electric connecting piece is provided with an insertion cavity for inserting an external electric connection plug, and one end of the other external cable, which is far away from the box body, is connected with an electric connecting end, and the electric connecting end is used for inserting into an external electric connection socket.

9. The solar module junction box of claim 8, wherein: and clamping blocks for preventing the electric connection end from being separated from the external electric connection socket are arranged on two sides of the electric connection end.

10. The solar module junction box of claim 1, wherein: the mounting opening has been seted up to the box body upper surface, mounting opening department joint cooperation has the lid.