CN115037243B

CN115037243B - Photovoltaic module junction box and photovoltaic module

Info

Publication number: CN115037243B
Application number: CN202210948426.4A
Authority: CN
Inventors: 郭文丰; 刘俊; 张勤辉
Original assignee: Nantong Leneng Electric Power Co ltd
Current assignee: Nantong Leneng Electric Power Co ltd
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2022-12-02
Anticipated expiration: 2042-08-09
Also published as: CN115037243A

Abstract

The application relates to the technical field of photovoltaic production, in particular to a photovoltaic assembly junction box and a photovoltaic assembly, which comprise a cover plate, a battery chip, a back plate, a frame and a junction box, wherein the junction box adopts a split structure and comprises a positive junction box, an intermediate junction box and a negative junction box; the cable is led out of the positive terminal box, the union piece is installed on the negative terminal box, the union piece is detachably connected with a connector at the end part of the cable, and protective sleeves are sleeved on the connector and the union piece; the connector comprises a contact pin and a nut, wherein the nut and the cable are sealed through a sealing plug, the nut is screwed at the tail end of the contact pin, a positive electrode is arranged in the contact pin, the connected piece is arranged at the end part of the negative terminal box, and a negative electrode corresponding to the positive electrode is arranged at the bottom of the connected piece; a metal piece and a diode are arranged in the junction box, wherein the interior of the junction box is sealed by pouring sealant, and box covers are arranged on two sides of the junction box in a covering mode. This application effectively improves the waterproof sealing performance and the life of photovoltaic module terminal box.

Description

Photovoltaic module junction box and photovoltaic module

Technical Field

The application relates to the technical field of photovoltaic production, in particular to a photovoltaic module junction box and a photovoltaic module.

Background

The photovoltaic junction box is an indispensable part in a photovoltaic power generation system and is a key element of a photovoltaic module capable of normally and outwards conveying electric energy.

Refer to chinese patent CN109286366a photovoltaic terminal box, provide a photovoltaic terminal box, include box body, lid and accept the connector module in the box body, the box body be equipped with the relative diapire of lid and around in diapire annular lateral wall all around, diapire and annular lateral wall form one jointly and hold the chamber that holds of connector module, the diapire is equipped with outer wall and supports the internal face of connector module, be equipped with a plurality of radiating grooves on the outer wall, and the radiating groove extends and link up along the length direction of diapire annular lateral wall. According to the invention, through the heat dissipation grooves on the bottom wall of the box body and the gluing areas on the two sides of the heat dissipation grooves, the sealing requirement of the box body is met, and a good heat dissipation effect can be realized, so that heat at the central position of the junction box can be quickly discharged from the two sides of the box body through the heat dissipation grooves. Between positive and negative electrode connector and the box body, be connected by the cable that is close equivalent length respectively, during the power station installation, constructor can be inserted the connector and close together again, then ties up on the aluminium frame with the nylon ribbon, and the terminal box and the connector of this kind of design use on land power station in a large number, do not have too big problem.

Problems arise when photovoltaic modules are applied to the ocean or lake for power generation. When surface of water photovoltaic power plant began the operation, received surface of water wind and blown the wave and play the effect influence, the buoyant raft carrier just begins to rock together with panel above that, and the time is of a specified duration, and the nylon ribbon of tying up the connector will break, and the connector will drop in the water, and the water is just probably electrified to cause dangerous occurence of failure such as electrocution or power station abnormity.

Disclosure of Invention

In order to overcome the problems in the prior art, the application provides a photovoltaic module junction box and a photovoltaic module.

The application provides a photovoltaic module terminal box and photovoltaic module adopts following technical scheme:

a photovoltaic assembly junction box and a photovoltaic assembly comprise a cover plate, a battery chip, a back plate, a frame and a junction box, wherein the junction box is of a split structure and comprises a positive junction box, an intermediate junction box and a negative junction box; the cable is led out of the positive terminal box, the union piece is installed on the negative terminal box, the union piece is detachably connected with a connector at the end part of the cable, and protective sleeves are sleeved on the connector and the union piece; the connector comprises a contact pin and a nut, wherein the nut and the cable are sealed through a sealing plug, the nut is screwed at the tail end of the contact pin, a positive electrode is arranged in the contact pin, the connected piece is arranged at the end part of the negative terminal box, and a negative electrode corresponding to the positive electrode is arranged at the bottom of the connected piece; the junction box is internally provided with a metal piece and a diode, wherein the interior of the junction box is sealed by pouring sealant, and two sides of the junction box are covered with box covers.

By adopting the technical scheme, the junction box in the photovoltaic module adopts a split structure, so that the using amount of cables is saved, the diodes are placed in a plurality of boxes, the temperature rising speed is reduced, and the influence of the temperature rising of the junction box on the photovoltaic module is reduced. The positive terminal box is provided with the cable and the positive plug, the negative terminal box and the middle terminal box are both boxes without cables, and therefore when the cable connector is installed, the cable in the positive terminal box only needs to be inserted into the connector, and the design avoids the problem that the connector possibly falls into a water body along with the cable in the traditional design to cause the dangerous condition of electrification of the water body. The connector designs a structure capable of being matched with the connected piece through the design of the contact pin and the nut, wherein the nut and the cable are sealed by the sealing plug, and water vapor is prevented from entering the junction box. The positive electrode in the contact pin is electrically connected with the positive electrode in the connected piece, and the connector and the connected piece are sleeved with the protective sleeve, so that water vapor can be further prevented from entering the junction box. The metal part box diodes in the junction box are sealed by pouring sealant, and the box covers are covered on the front face and the rear face of the junction box, so that the normal electric connection and sealing effect in the junction box body are guaranteed.

Preferably, positive electrode setting in the contact pin in the connector is at the center of connector, is equipped with the sand grip the same with the contact pin extending direction on the lateral wall of contact pin, and wherein the one end fixed connection that the contact pin tip was kept away from to the sand grip is on the contact pin, and the one end that the sand grip is close to the contact pin tip is passed through the elastic component and is connected with the contact pin, and the back of relative elastic component is equipped with the checkpost on the sand grip.

Through adopting above-mentioned technical scheme, the positive electrode that establishes in the contact pin is used for corresponding with the negative motor and is connected, and the sand grip that has the checkpost on the contact pin lateral wall is used for fixed with conjuncted piece joint to the one end and the contact pin fixed connection of sand grip, the other end passes through the elastic component and is connected with the contact pin, can make things convenient for the joint of checkpost and untie the joint.

Preferably, be equipped with in the antithetical couplet piece with the jack of contact pin adaptation and with the installation terminal surface of nut adaptation, the negative electrode setting is equipped with in the jack and pushes down the key in the annular strip that is equipped with in the jack with the contact pin adaptation, be provided with in the jack with the logical groove of sand grip adaptation, lead to the groove and keep away from jack open-ended one end and be equipped with, push down the key and run through the lateral wall of antithetical couplet piece.

By adopting the technical scheme, the jack in the connected piece is matched with the contact pin, the mounting end face is matched with the nut, and the negative electrode at the bottom of the jack can be electrically connected with the positive electrode at the center of the contact pin. The annular strip in the jack can be attached and sealed with the outer surface of the contact pin, and the last sealing at the joint of the positive electrode and the negative electrode is realized. Offer some logical grooves on the lateral wall of jack can with the sand grip adaptation on the contact pin to press the key and install in the position that the checkpost corresponds, can be used for untiing the joint of checkpost, and press the key and run through the lateral wall of antithetical couplet piece, can press the connection of untiing contact pin and antithetical couplet piece from the outer wall of conjuncted piece, convenient operation is swift.

Preferably, the nut and the contact pin are both of cylindrical structures, the raised line is of a cuboid structure, and the clip on the raised line is arranged at the end part of the raised line; the press key comprises a press block matched with an upper opening of the connected piece, a limit block is distributed on the side wall of the press block in an annular mode, a groove body matched with the limit block is arranged on the connected piece around the press block, and a spring is fixedly connected with the bottom surface of the limit block in the groove body.

Through adopting above-mentioned technical scheme, nut and contact pin all adopt the cylinder structure, and both rotate the in-process of connecting and can not receive the influence that self shape and protective sheath cooperation position change, at the in-process with conjuncted piece cooperation ann joint, only need confirm the sand grip of rectangle structure and lead to the position correspondence in groove and can install. The pressing key is connected with the springs in the groove body through the limiting blocks on the periphery, and the lifting block is pressed to lift the pressing key, so that the clamping of the clamp is released.

Preferably, the through groove in the jack and the clips on the contact pins are located on the outer sides of the annular strips, the connectors are sleeved on the negative electrodes in the jack, the surfaces of the connectors are attached to the end faces of the contact pins, the grooves in the back faces of the connectors are connected with the negative electrodes in a sliding mode, and the grooves are connected with the end portions of the negative electrodes through springs.

Through adopting above-mentioned technical scheme, lead to groove and checkpost and all set up in the outside of annular strip, the sealed effect of annular strip can not influenced by the structure of contact pin and jack joint. The negative electrode in the jack is connected with the connector through the spring, the connector is elastically connected to the negative electrode, and the positive electrode and the negative electrode on the contact pin can be stably connected under the action of the abutting of the spring and the connector.

Preferably, the protective sheath includes visor and lower visor, wherein goes up protective sheath trip all around and buckle fixed connection in the protective sheath down, and both sides medial surface all installs the ring packing, the inner wall and the connector of protective sheath and allies oneself with a spare looks adaptation.

Through adopting above-mentioned technical scheme, the protective sheath adopts the last protective sheath that has ring packing and protects the position that the cover is connected to connector and conjuncted piece down and seals to through the trip of last protective sheath and the buckle fixed connection on the protective sheath down, effectively fix the protective sheath, guarantee the sealed effect of protection.

Preferably, the bottom of the protective sleeve is bonded on the back plate through a sealant, wherein a heat dissipation groove is formed in the bottom surface of the lower protective cover, and the heat dissipation groove extends along the length direction of the lower protective cover and penetrates through the whole lower protective cover.

Through adopting above-mentioned technical scheme, the radiating groove that the bottom of protective sheath was seted up through the design of link up down visor bottom surface, can the effectual radiating effect that improves the interior mechanism of protective sheath to improve the bonding effect of protective sheath and backplate, reduced the condition that the high temperature reduces sealed gluey life.

Preferably, a wire fixing mechanism is arranged at a joint of the positive terminal box and the cable, the wire fixing mechanism comprises a wire conduit integrally formed with the positive terminal box and a wire fixing buckle clamped on the wire conduit, and the cable penetrates through the wire fixing mechanism and is connected with the positive terminal box in a sealing manner.

Through adopting above-mentioned technical scheme, the conduit among the solidus mechanism that the joint department of anodal terminal box and cable was equipped with is arranged in exporting the cable in the positive terminal box, and conduit and positive terminal box carry out integrated into one piece, through solidus buckle joint on the conduit to realize the sealed between cable and the positive terminal box, avoid steam to get into anodal terminal box.

Preferably, the wire conduit comprises arc-shaped plates which are symmetrically distributed from left to right, wherein a through hole connected with the cavity of the positive terminal box is formed in the middle of each arc-shaped plate, and the upper part and the lower part of each through hole are respectively provided with a clamping groove; the thread fixing buckle comprises a thread fixing pipe, a thread hole is formed in the middle of the thread fixing pipe, and clamping blocks are arranged on two sides of the thread fixing pipe respectively.

Through adopting above-mentioned technical scheme, the structure that the center has the through-hole is pieced together through the arc of both sides to the conduit, and the through-hole is used for the passing through of cable, and the draw-in groove about the through-hole is used for fixing the fixture block that the solidus was buckled. The thread fixing pipe on the thread fixing buckle is provided with a thread hole, the thread fixing pipe is connected with the through hole in the conduit, and the fixture blocks at the two ends of the thread fixing pipe are fixedly connected with the conduit, so that the stable connection between the thread fixing pipe and the through hole is ensured.

Preferably, an O-shaped sealing ring is sleeved at one end, close to the positive terminal box, of the wire fixing pipe, a hose is arranged at one end, far away from the positive terminal box, of the wire fixing pipe, and the inner diameter of the hose is matched with the outer diameter of the cable.

By adopting the technical scheme, one end of the wire fixing pipe close to the positive terminal box is sleeved with the O-shaped sealing ring for sealing the connection between the through holes of the wire fixing pipe box, so that water vapor is effectively prevented from entering the positive terminal box.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the traditional junction box and connector are designed in a separated mode, the two products are combined into a whole through a die technology, an injection molding technology and an electric contact technology, the negative electrode of the connector is directly assembled with a junction box connector in an injection molding mode, each battery panel comprises three junction boxes, only the positive junction box is provided with a cable and a positive plug, the negative electrode and the middle electrode are only boxes without cables, and the problem that the connector possibly falls into a water body along with the cables in the traditional design to cause the dangerous situation of electrification of the water body is avoided;

2. the connector of the positive cable is inserted into the connecting piece, so that no matter wind and rain or sea waves are blown, the 'connectors' of the battery panels which are mutually connected are firmly integrated with the junction box and are bonded at the high position of the back of the battery panels, the connectors cannot fall off into a water body, the sealing mechanisms are arranged at the positive terminal box end and the negative terminal box end, the installation and the disassembly between the mechanisms are convenient, and the installation efficiency of the photovoltaic module is improved;

3. the cable that positive terminal box was drawn forth is connected its and is connected with antithetical couplet spare through the protective sheath through the tip and carry out the suit, and the effectual steam of having avoided enters into in the terminal box and influences its normal work, has improved the life of terminal box greatly.

Drawings

FIG. 1 is a schematic view of a photovoltaic module junction box and an overall structure of a photovoltaic module;

FIG. 2 is a schematic view of a photovoltaic module junction box and a connection structure of a junction piece and a cable in a negative junction box of the photovoltaic module;

FIG. 3 is an exploded view of FIG. 2;

FIG. 4 is an enlarged view of the push button structure of FIG. 3;

FIG. 5 is an enlarged view at B in FIG. 3;

FIG. 6 is a schematic view showing the internal structure of the coupling body of FIG. 3;

FIG. 7 is a schematic view of a photovoltaic module junction box and a connection structure of a positive junction box and a wire fixing mechanism in the photovoltaic module;

fig. 8 is a schematic view of an internal structure of a photovoltaic module junction box and an intermediate junction box in a photovoltaic module.

Description of reference numerals: 1. a cover plate; 2. a battery chip; 3. a back plate; 4. a frame; 5. a junction box; 51. a positive terminal box; 52. an intermediate junction box; 53. a negative terminal box; 54. a cable; 55. a union piece; 551. a negative electrode; 5511. a connector; 552. a jack; 553. mounting an end face; 554. an annular strip; 555. a through groove; 556. pressing a key; 5561. a pressing block; 5562. a limiting block; 557. a trough body; 56. a connector; 561. inserting a pin; 5611. a convex strip; 5612. an elastic member; 5613. a clip; 562. a nut; 564. a positive electrode; 57. a protective sleeve; 571. an upper protective cover; 5711. a hook is clamped; 572. a lower protective cover; 5721. buckling; 5722. a heat sink; 573. an annular seal ring; 58. a metal member; 59. a diode; 50. a box cover; 6. a wire fixing mechanism; 61. a conduit; 611. an arc-shaped plate; 612. a through hole; 613. a card slot; 62. a wire fixing buckle; 621. a wire fixing pipe; 6211. an O-shaped sealing ring; 6212. a hose; 622. threading holes; 623. and (7) clamping blocks.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

The embodiment of the application discloses photovoltaic module terminal box and photovoltaic module.

Referring to fig. 1-8, a photovoltaic module junction box 5 and a photovoltaic module include a cover plate 1, a battery chip 2, a back plate 3, a frame 4 and a junction box 5, wherein the junction box 5 adopts a split structure and includes a positive junction box 51, a middle junction box 52 and a negative junction box 53; a cable 54 is led out of the positive terminal box 51, a connecting piece 55 is mounted on the negative terminal box 53, the connecting piece 55 is detachably connected with a connector 56 at the end part of the cable 54, and a protective sleeve 57 is sleeved on the connector 56 and the connecting piece 55; the connector 56 comprises a plug pin 561 and a nut 562, wherein the nut 562 and the cable 54 are sealed by a sealing plug, the nut 562 is screwed at the tail end of the plug pin 561, a positive electrode 564 is arranged in the plug pin 561, the integrated piece 55 is arranged at the end of the negative electrode junction box 53, and the bottom of the integrated piece 55 is provided with a negative electrode 551 corresponding to the positive electrode 564; the junction box 5 is internally provided with a metal piece 58 and a diode 59, wherein the interior of the junction box 5 is sealed by pouring sealant, and two sides of the junction box 5 are covered with box covers 50. The junction box 5 in the photovoltaic module adopts a split structure, so that the using amount of cables 54 is saved, the diodes are placed in a plurality of boxes, the temperature rising speed is reduced, and the influence of the temperature rising of the junction box 5 on the photovoltaic module is reduced. The positive terminal box 51 is provided with a cable and a positive plug, the negative terminal box 53 and the middle terminal box 52 are both boxes without cables, and in the installation process, only the cable in the positive terminal box 51 needs to be inserted into the integrated part 55, so that the design avoids the problem that the connector 56 possibly falls into the water body along with the cable in the traditional design to cause the water body electrified dangerous condition. The connector 56 is designed to fit the connector 55 by means of a pin 561 and a nut 562, wherein the nut 562 is sealed with the cable 54 by means of a sealing plug to prevent moisture from entering the terminal box 5. The positive electrode 564 in the pin 561 is electrically connected with the positive electrode 564 in the connector 55, and a protective sleeve 57 is sleeved on the connector 56 and the connector 55, so as to further prevent moisture from entering the junction box 5. The metal part 58 box diodes in the junction box 5 are sealed by pouring sealant, and the box covers 50 are covered on the front and back surfaces of the junction box 5, so that the normal electric connection and sealing effect in the junction box 5 are ensured.

Referring to fig. 1, 2, 3 and 6, the positive electrode 564 in the pin 561 of the connector 56 is disposed at the center of the connector 56, a protruding strip 5611 is disposed on the outer side wall of the pin 561 and has the same extending direction as the pin 561, wherein one end of the protruding strip 5611 away from the end of the pin 561 is fixedly connected to the pin 561, one end of the protruding strip 5611 close to the end of the pin 561 is connected to the pin 561 through an elastic member 5612, and a clip 5613 is disposed on the back surface of the protruding strip 5611 opposite to the elastic member 5612. The positive electrode 564 arranged in the pin 561 is used for being correspondingly connected with a negative motor, a raised strip 5611 with a clamp 5613 on the outer side wall of the pin 561 is used for being clamped and fixed with the integrated piece 55, one end of the raised strip 5611 is fixedly connected with the pin 561, the other end of the raised strip is connected with the pin 561 through an elastic piece 5612, and clamping and unlocking of the clamp 5613 can be facilitated.

Referring to fig. 1, 2, 3, 4 and 8, the coupling member 55 is provided with a socket 552 adapted to the pin 561 and a mounting end surface 553 adapted to the nut 562, the negative electrode 551 is disposed at the bottom of the socket 552, an annular strip 554 adapted to the pin 561 is disposed in the socket 552, a through groove 555 adapted to the protruding strip 5611 is disposed in the socket 552, a pressing key 556 is disposed at an end of the through groove 555 away from an opening of the socket 552, and the pressing key 556 penetrates through a side wall of the coupling member 55. The insertion hole 552 of the connector 55 is fitted with a pin 561, the mounting end surface 553 is fitted with a nut 562, and the negative electrode 551 at the bottom of the insertion hole 552 can be electrically connected with the positive electrode 564 at the center of the pin 561. The annular strip 554 within the receptacle 552 is capable of sealing snugly against the outer surface of the pin 561, the last line of sealing at the junction of the positive electrode 564 and the negative electrode 551. The through groove 555 that sets up on the lateral wall of jack 552 can with the sand grip 5611 adaptation on the contact pin 561 to press the key 556 and install in the position that checkpost 5613 corresponds, can be used for untiing the joint of checkpost 5613, and press the key 556 and run through the lateral wall of conjuncted piece 55, can press on the outer wall of conjuncted piece 55 and untie the connection of contact pin 561 and conjuncted piece 55, convenient operation is swift.

Referring to fig. 1, 2, 3, 4, 5 and 6, the nut 562 and the pin 561 are both cylindrical, wherein the protrusion 5611 is rectangular, and the catches 5613 on the protrusion 5611 are disposed at the ends of the protrusion 5611; the pressing key 556 comprises a pressing block 5561 matched with an upper opening of the connecting piece 55, a limiting block 5562 is annularly distributed on the side wall of the pressing block 5561, groove bodies 557 matched with the limiting blocks 5562 are arranged on the connecting piece 55 around the pressing block 5561, and springs are arranged in the groove bodies 557 and fixedly connected with the bottom surfaces of the limiting blocks 5562. Nut 562 and contact pin 561 all adopt the cylinder structure, and both rotate the in-process of connecting and can not receive the influence that self shape and protective sheath 57 cooperation position change, at the in-process of the cooperation ann joint with conjuncted piece 55, only need confirm that the position of the sand grip 5611 and the logical groove 555 of rectangle structure corresponds and can install. The pressing key 556 is connected with the springs in the groove bodies 557 through the limiting blocks 5562 on the periphery, the lifting block is pressed to lift, and therefore clamping of the clamp 5613 is released.

Referring to fig. 1, 2, 3 and 6, the through groove 555 in the jack 552 and the clip 5613 on the pin 561 are both located outside the ring-shaped strip 554, the negative electrode 551 in the jack 552 is sleeved with the connector 5511, the surface of the connector 5511 is attached to the end surface of the pin 561, the groove on the back surface of the connector 5511 is slidably connected with the negative electrode 551, and the groove is connected with the end of the negative electrode 551 through a spring. The through slots 555 and the catches 5613 are disposed on the outer side of the ring strip 554, and the engagement structure of the pins 561 and the receptacles 552 does not affect the sealing effect of the ring strip 554. The negative electrode 551 in the jack 552 is connected with a connector 5511 through a spring, the connector 5511 is elastically connected with the negative electrode 551, and the positive electrode 564 on the pin 561 and the negative electrode 551 can be stably connected through the abutting action of the spring and the connector 5511.

Referring to fig. 1, 2 and 3, the protective cover 57 includes an upper protective cover 571 and a lower protective cover 572, wherein the hooks 5711 around the upper protective cover 571 are fixedly connected with the hooks 5721 in the lower protective cover 572, and the inner sides of the two are both provided with the ring seal 573, and the inner wall of the protective cover 57 is adapted to the connector 56 and the coupling member 55. The protecting sleeve 57 adopts an upper protecting sleeve 571 and a lower protecting sleeve 572 with annular sealing rings 573 to seal the connecting position of the connector 56 and the connected piece 55, and the upper protecting sleeve 571 is fixedly connected with the buckle 5721 on the lower protecting sleeve 572 through a clamping hook 5711, so that the protecting sleeve 57 is effectively fixed, and the protecting and sealing effect is guaranteed.

Referring to fig. 1, 2 and 3, the bottom of the protective cover 57 is adhered to the back plate 3 by a sealant, wherein a heat dissipation groove 5722 is formed on the bottom surface of the lower protective cover 572, and the heat dissipation groove 5722 extends along the length direction of the lower protective cover 572 and penetrates through the entire lower protective cover 572. The radiating groove 5722 that protective sheath 57's bottom was seted up through the design of visor 572 bottom surface down, can effectual improvement protective sheath 57 in the radiating effect of mechanism to improve protective sheath 57 and backplate 3's bonding effect, reduced the high sealed circumstances of gluing life that reduces of high temperature.

Referring to fig. 1 and 7, a wire fixing mechanism 6 is disposed at a joint of the positive terminal box 51 and the cable 54, the wire fixing mechanism 6 includes a conduit 61 integrally formed with the positive terminal box 51 and a wire fixing buckle 62 clamped on the conduit 61, wherein the cable 54 penetrates through the wire fixing mechanism 6 and is connected with the positive terminal box 51 in a sealing manner. The wire conduit 61 of the wire fixing mechanism 6 arranged at the joint of the positive terminal box 51 and the cable 54 is used for guiding out the cable 54 in the positive terminal box 5, the wire conduit 61 and the positive terminal box 5 are integrally formed, and the wire fixing buckle 62 is clamped on the wire conduit 61, so that the sealing between the cable 54 and the positive terminal box 5 is realized, and water vapor is prevented from entering the positive terminal box 51.

Referring to fig. 1 and 7, the conduit 61 includes arc plates 611 symmetrically distributed left and right, wherein a through hole 612 connected to the cavity of the positive terminal box 51 is formed in the middle of the arc plates 611, and the upper and lower sides of the through hole 612 are respectively provided with a clamping groove 613; the thread fixing buckle 62 comprises a thread fixing pipe 621, a thread hole 622 is formed in the middle of the thread fixing pipe 621, and two clamping blocks 623 are respectively arranged on two sides of the thread fixing pipe 621. The conduit 61 is assembled into a structure with a through hole 612 in the center through the arc-shaped plates 611 on both sides, the through hole 612 is used for the cable 54 to pass through, and the locking slots 613 on the upper and lower sides of the through hole 612 are used for fixing the locking blocks 623 on the wire fixing buckle 62. The thread fixing pipe 621 of the thread fixing buckle 62 is provided with a thread hole 622, the thread fixing pipe 621 is connected with the through hole 612 of the conduit 61, and the thread fixing pipe 621 is fixedly connected with the conduit 61 through the clamping blocks 623 at two ends of the thread fixing pipe 621, so that stable connection between the thread fixing pipe 621 and the through hole 612 is ensured.

Referring to fig. 1 and 7, an O-ring 6211 is sleeved on an end of the wire fixing tube 621 close to the positive terminal box 51, a hose 6212 is disposed on an end of the wire fixing tube 621 far from the positive terminal box 51, and an inner diameter of the hose 6212 is adapted to an outer diameter of the cable 54. An O-shaped sealing ring 6211 is sleeved on one end of the conduit 621 close to the positive terminal box 51 for sealing the connection between the through holes 612 of the conduit 621 and the positive terminal box 51, so as to effectively prevent water vapor from entering the positive terminal box 51.

The working principle is as follows: photovoltaic module passes through apron 1, battery chip 2, 3 range upon range of settings of backplate, and wherein the upper and lower two sides of battery chip 2 all bonds with apron 1 and backplate 3 through EVA glue, and photovoltaic module wraps up the installation through frame 4 all around. The junction box 5 is installed on the photovoltaic module backboard 3, and adopts a split structure, and comprises a positive junction box 51, an intermediate junction box 52 and a negative junction box 53.

The cable 54 is led out from the positive terminal box 51 through the wire fixing mechanism 6, the conduit 61 in the wire fixing mechanism 6 and the positive terminal box 51 are integrally formed, the cable 54 penetrates out of a through hole 612 in the conduit 61, a wire fixing buckle 62 in the wire fixing mechanism 6 is detachably mounted on the conduit 61, a wire fixing pipe 621 in the wire fixing buckle 62 is plugged into the through hole 612, an O-shaped sealing ring 6211 sleeved on the wire fixing buckle 62 seals connection between the two, the back side in the wire fixing buckle 62 is connected with a hose 6212 provided with a wire through hole 622, and a clamping block 623 arranged on the wire fixing buckle 62 is fixedly connected with a clamping groove 613 on the conduit 61 in a clamping mode.

The connector 55 arranged on the negative terminal box 53 is connected with the connector 56 arranged at the end of the cable 54, the connector 56 passes through the plug pin 561 and the nut 562 for fixing the plug pin 561, the cable 54 is arranged at the center of the plug pin 561, the joint of the nut 562 and the cable 54 is sealed by a sealing plug, the plug pin 561 is provided with a raised strip 5611 with a clamp 5613 which can be clamped with the connector 55, and the connector 55 is further provided with a pressing key 556 for unlocking the clamping of the clamp 5613. The connecting member 55 is provided with a plug hole 552 for sealing with a plug pin 561 having a ring strip 554, a mounting end surface 553 of the connecting member 55 is attached to a nut 562, a connector 5511 is further mounted on one end of the connecting member 55 close to the negative electrode 551, the connector 5511 is connected with the negative electrode 551 through a groove 557 on the back surface thereof, and the connector 5511 is slidably connected with the negative electrode 551 and can be electrically connected.

A protective sleeve 57 is sleeved outside the joint of the cable 54 and the connected piece 55, the protective sleeve 57 is wrapped by the upper protective cover 571 and the lower protective cover 572, and is sealed by the annular sealing ring 573 which is arranged so far, and the upper protective cover 571 is connected with the buckle 5721 in the lower protective cover 572 by the hook 5711.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a photovoltaic module terminal box and photovoltaic module which characterized in that: the battery comprises a cover plate (1), a battery chip (2), a back plate (3), a frame (4) and a junction box (5), wherein the junction box (5) adopts a split structure and comprises a positive junction box (51), a middle junction box (52) and a negative junction box (53); a cable (54) is led out of the positive terminal box (51), a connecting piece (55) is installed on the negative terminal box (53), the connecting piece (55) is detachably connected with a connector (56) at the end part of the cable (54), and a protective sleeve (57) is sleeved on the connector (56) and the connecting piece (55); the connector (56) comprises a plug pin (561) and a nut (562), wherein the nut (562) and the cable (54) are sealed through a sealing plug, the nut (562) is screwed at the tail end of the plug pin (561), a positive electrode (564) is arranged in the plug pin (561), the integrated piece (55) is arranged at the end part of the negative electrode junction box (53), and a negative electrode (551) corresponding to the positive electrode (564) is arranged at the bottom of the integrated piece (55); be equipped with metalwork (58) and diode (59) in terminal box (5), wherein inside pouring sealant that adopts of terminal box (5) is sealed, and the both sides lid of terminal box (5) is equipped with lid (50), positive electrode (564) in contact pin (561) in connector (56) set up the center at connector (56), be equipped with on the lateral wall of contact pin (561) with contact pin (561) extending direction the same sand grip (5611), wherein the one end fixed connection of contact pin (561) tip is kept away from in sand grip (5611) on contact pin (561), the one end that sand grip (5611) is close to contact pin (561) tip is connected with contact pin (561) through elastic component (5612), and the back relative elastic component (5612) is equipped with checkpost (5613) on sand grip (5611).

2. The photovoltaic module junction box and the photovoltaic module as claimed in claim 1, wherein: be equipped with in allies oneself with body (55) jack (552) with contact pin (561) adaptation and installation terminal surface (553) with nut (562) adaptation, negative electrode (551) set up in jack (552) bottom, be equipped with in jack (552) with annular strip (554) of contact pin (561) adaptation, be provided with logical groove (555) with sand grip (5611) adaptation in jack (552), the open-ended one end of keeping away from jack (552) in logical groove (555) is equipped with and presses key (556), press key (556) and run through the lateral wall of allies oneself with body (55).

3. The photovoltaic module junction box and photovoltaic module of claim 2, wherein: the nut (562) and the plug pin (561) are both in cylindrical structures, the raised strip (5611) is in a cuboid structure, and the clip (5613) on the raised strip (5611) is arranged at the end part of the raised strip (5611); the pressing key (556) comprises a pressing block (5561) matched with an upper opening of the linkage piece (55), a limiting block (5562) is annularly distributed on the side wall of the pressing block (5561), groove bodies (557) matched with the limiting block (5562) are arranged on the linkage piece (55) on the periphery of the pressing block (5561), and springs are fixedly connected with the bottom surface of the limiting block (5562) in the groove bodies (557).

4. The photovoltaic module junction box and photovoltaic module of claim 2, wherein: through groove (555) in jack (552) and checkpost (5613) on contact pin (561) all are located the outside of annular strip (554), the cover is equipped with connector (5511) on negative electrode (551) in jack (552), the surface of connector (5511) is laminated with the terminal surface of contact pin (561), the recess and negative electrode (551) sliding connection at the back of connector (5511), and pass through the end connection of spring and negative electrode (551) in the recess.

5. The photovoltaic module junction box and the photovoltaic module as claimed in claim 1, wherein: the protective sleeve (57) comprises an upper protective cover (571) and a lower protective cover (572), wherein the hooks (5711) on the periphery of the upper protective cover (571) are fixedly connected with the buckles (5721) in the lower protective cover (572), the inner side surfaces of the two sides are respectively provided with an annular sealing ring (573), and the inner wall of the protective sleeve (57) is matched with the connector (56) and the connected piece (55).

6. The photovoltaic module junction box and photovoltaic module of claim 5, wherein: the bottom of the protective sleeve (57) is bonded on the back plate (3) through sealing glue, wherein a heat dissipation groove (5722) is formed in the bottom surface of the lower protective cover (572), and the heat dissipation groove (5722) extends along the length direction of the lower protective cover (572) and penetrates through the whole lower protective cover (572).

7. The photovoltaic module junction box and the photovoltaic module as claimed in claim 1, wherein: the wire fixing mechanism (6) is arranged at the joint of the positive terminal box (51) and the cable (54), the wire fixing mechanism (6) comprises a wire guide pipe (61) integrally formed with the positive terminal box (51) and a wire fixing buckle (62) clamped on the wire guide pipe (61), and the cable (54) penetrates through the wire fixing mechanism (6) and is connected with the positive terminal box (51) in a sealing mode.

8. The photovoltaic module junction box and photovoltaic module of claim 7, wherein: the wire conduit (61) comprises arc-shaped plates (611) which are symmetrically distributed left and right, wherein a through hole (612) connected with a cavity of the positive terminal box (51) is formed in the middle of each arc-shaped plate (611), and clamping grooves (613) are respectively formed in the upper and lower parts of each through hole (612); the thread fixing buckle (62) comprises a thread fixing pipe (621), a thread penetrating hole (622) is formed in the middle of the thread fixing pipe (621), and clamping blocks (623) are arranged on two sides of the thread fixing pipe (621) respectively.

9. The photovoltaic module junction box and photovoltaic module according to claim 8, wherein: an O-shaped sealing ring (6211) is sleeved at one end, close to the positive terminal box (51), of the wire fixing pipe (621), a hose (6212) is arranged at one end, far away from the positive terminal box (51), of the wire fixing pipe (621), and the inner diameter of the hose (6212) is matched with the outer diameter of the cable (54).