CN217159646U - Two-split photovoltaic module and junction box and combined structure thereof - Google Patents

Abstract

The utility model relates to a bipartite body formula photovoltaic module and terminal box and integrated configuration thereof, including two split type photovoltaic modules, bipartite body formula photovoltaic module includes the conducting strip group that is provided with a plurality of confluence strip mounting grooves, and the conducting strip group includes conducting strip one, and conducting strip two and conducting strip three that are connected with conducting strip one through PN junction chip and wire jumper respectively, and the PN junction chip and wire jumper are wrapped up with the insulator, and the insulator is at least partly coincided with conducting strip one, conducting strip two, conducting strip three; the insulator is also provided with a plurality of groups of radiating and avoiding grooves and converging belt and avoiding grooves; each group of radiating and avoiding grooves and the bus belt and avoiding grooves are at least partially overlapped, and the overlapped part is at least partially overlapped with the corresponding bus belt mounting groove. The utility model discloses a bipartite photovoltaic module, a junction box and a combined structure thereof, which have good heat dissipation performance, installation convenience and stability; excellent chip mounting adaptability of PN junction.

Description

Two-split photovoltaic module and junction box and combined structure thereof

Technical Field

The utility model relates to a photovoltaic technology field, in particular to photovoltaic terminal box field, concretely relates to bipartite formula photovoltaic module and terminal box and integrated configuration thereof.

Background

The junction box is very important in the constitution of the photovoltaic equipment in the technical field of solar energy, and when the internal battery of the photovoltaic equipment generates hot spot effect, the conductive component in the photovoltaic junction box assembly serves as a bypass protection device of the photovoltaic equipment, and can be protected through the photovoltaic junction box assembly arranged in order to ensure the normal operation of the photovoltaic equipment. The main function is to connect the electricity generated by the solar cell to external wiring.

Conventional junction boxes, such as the prior patents: application No. CN 201920811358.0; the patent name, a photovoltaic module is encapsulated into a diode by pouring sealant. And welding the chip of the diode on the positive and negative pins in the junction box, and welding the pins of the diode on the conductive sheet in the junction box in a welding manner. In the production process, a large amount of manpower and production resources are consumed for assembly welding, and the PN junction chip and the conducting plate are welded for the second time, so that the heat conduction performance is reduced, and the junction box is easy to heat and damage.

The photovoltaic junction box assembly in the prior art has the following defects:

first, a photovoltaic module in a photovoltaic junction box assembly needs to be built in the junction box, a chip and a jumper wire need to be wrapped on the binary photovoltaic module through an insulator, and the wrapping of the insulator also causes poor heat dissipation performance of a conductive module, so that the overall heat dissipation of the binary photovoltaic module is influenced.

Secondly, the installation of the bus bar is not convenient enough. The structure of the bus bar installation guide is not provided. And an auxiliary limiting structure of the bus bar is not provided. The product for mounting the PN junction chip has poor adaptability.

Disclosure of Invention

The utility model overcomes the defects of the prior art, provides a bipartite photovoltaic module and a junction box and a combined structure thereof, and has good heat dispersion, installation convenience and stability; excellent chip mounting adaptability of PN junction.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a bipartite body type photovoltaic module comprises a conducting strip group provided with a plurality of bus bar mounting grooves, wherein the conducting strip group comprises a conducting strip I, a conducting strip II and a conducting strip III which are mutually independent; the conducting strip I is electrically connected with the conducting strip II and the conducting strip III through a PN junction chip and a jumper wire respectively, insulators are wrapped on the PN junction chip and the jumper wire, and at least parts of the insulators are overlapped with the conducting strip I, the conducting strip II and the conducting strip III; the insulator is also provided with a plurality of groups of radiating and avoiding grooves and converging belt and avoiding grooves; every group dispels the heat and keeps away the dead slot and converge and take the dead slot to lie in the positive and negative both sides of insulator respectively, and every group dispels the heat and keeps away the dead slot and converge and take the dead slot to keep away at least partial coincidence, and coincidence department and the corresponding strip mounting groove that converges overlap at least partially.

In a preferred embodiment of the present invention, the first conducting strip adopts a chevron structure, and the second conducting strip and the third conducting strip adopt a U-shaped structure; two ends of the first conducting plate extend into the grooves of the second conducting plate and the third conducting plate respectively; the plurality of bus bar mounting grooves comprise a second bus bar mounting groove and a third bus bar mounting groove which are respectively formed between a gap reserved at a middle bulge of the first conductive plate and the insulator and a second conductive plate and a third conductive plate.

The utility model discloses a preferred embodiment, a plurality of converge and take mounting groove still include the middle part of conducting strip one and set up at least one converge and take mounting groove one on protruding.

In a preferred embodiment of the present invention, the first bus bar mounting groove, the second bus bar mounting groove and the third bus bar mounting groove are arranged in a U shape; the insulator is provided with a heat dissipation and clearance groove and a bus bar clearance groove which at least correspond to the bus bar mounting groove I, the bus bar mounting groove II and the bus bar mounting groove III; the bus bar clearance groove is provided with a first guide inclined plane.

In a preferred embodiment of the present invention, a two-part photovoltaic junction box is provided with the two-part photovoltaic module; the two-body photovoltaic junction box comprises a lower box body and a cover body capable of being opened and closed up and down, wherein an inner cavity is formed in the lower box body, a plurality of convergence belt introducing ports communicated with the inner cavity are formed in the bottom of the lower box body, a cover body sealing cover is arranged at an opening at the top of the inner cavity, two-body photovoltaic assemblies are arranged in the inner cavity, and threading holes used for penetrating cables are formed in the lower box body.

In a preferred embodiment of the present invention, the lower box body comprises a bottom plate and a cavity wall disposed on the bottom plate, and the cavity wall and the bottom plate are combined to form the inner cavity; a bracket corresponding to the convergence belt lead-in port is arranged in the inner cavity, and two split photovoltaic assemblies are mounted on the bracket; and a plurality of supporting parts or/and positioning parts for supporting and positioning the two split photovoltaic assemblies are arranged in the inner cavity.

In a preferred embodiment of the present invention, the back surface of the bottom plate is provided with an overflow glue receiving groove recessed from outside to inside, and the overflow glue receiving groove is connected with the bus bar introducing port; or/and the bottom plate is provided with a plurality of glue overflow holes communicated with the inner cavity.

In a preferred embodiment of the utility model, the confluence belt lead-in opening is provided with a second guide inclined plane which is inclined inwards and gradually contracted; the bracket is also provided with a plurality of glue overflow grooves.

In a preferred embodiment of the utility model, a thread locking groove is arranged on the threading hole on the lower box body, and a thread locking plate which can be assembled with the mounting groove is arranged on the thread locking groove; the bottom of the lower box body is also provided with a clamping and welding notch positioned on one side of the wire locking groove.

Specifically, the cavity wall is provided with a plurality of clamping grooves, and the cover body is provided with a clamping part in limit clamping connection with the clamping grooves; and the cover body is provided with a clamping groove in limiting and clamping connection with the clamping part. Converge and take and introduce the mouth, penetrate and have with the area of converging that conducting strip group connects, converge and take and introduce the mouth and still be provided with and be used for the shutoff converge and take and introduce the mouth to the sealed glue in area is lived to the parcel converges.

The utility model discloses a preferred embodiment, a integrated configuration of bipartite formula photovoltaic terminal box has adopted bipartite formula photovoltaic terminal box, two split type photovoltaic terminal boxes and outside photovoltaic terminal box combination converge the area through a plurality of respectively and are connected with subassembly battery piece electricity, make up and form bypass protection device.

The beneficial effects of the battery two-split type photovoltaic module according to the embodiment are as follows:

the two-body photovoltaic module, the junction box and the combined structure thereof have good heat dissipation performance, installation convenience and stability; excellent chip mounting adaptability of PN junction.

First, bipartite formula photovoltaic module's structural compatibility is strong, can place the chip of multiple unnecessary specification and promote the installation compatibility of PN junction chip. Through the combined structure of the heat dissipation empty avoiding groove and the converging belt empty avoiding groove, the heat dissipation performance of the bipartite photovoltaic module is effectively guaranteed. The arrangement of the heat dissipation clearance groove enables the exposed area of the conducting strip to be large, heat dissipation is good, and junction temperature is low. Every group heat dissipation is kept away the dead slot and is catchmented the area and keep away the dead slot at least partial coincidence, and the coincidence department with the area mounting groove that converges that corresponds at least partial overlapping, and converge and take the dead slot to keep away and be provided with the direction inclined plane, the concentrated installation of the busbar of being convenient for.

Secondly, the overflow glue accommodating groove is connected with a bus bar leading-in port, so that the penetration of the bus bar and the stability after installation are facilitated; the part that converges that extends to in the box body after the later stage installation can be spacing to inlay and establish overflow and glue and accomodate the groove in, promoted the installation stability in area of converging. The overflow that sets up on the bottom plate glue receiving groove and a plurality of with the overflow of inner chamber intercommunication glues the hole, the overflow of the later stage encapsulating of being convenient for produce. The glue overflowing hole, the glue overflowing groove and the glue overflowing containing groove are used for driving the glue filling to flow to the box bottom to wrap the bus bar, and the connection safety of the junction box and the assembly is improved.

Drawings

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

fig. 1 is a schematic top view of a two-part photovoltaic module according to a preferred embodiment of the present invention;

fig. 2 is a schematic view of an internal structure of a two-part photovoltaic module according to a preferred embodiment of the present invention;

fig. 3 is a schematic view of an explosion structure of a two-part photovoltaic module according to a preferred embodiment of the present invention;

fig. 4 is a schematic diagram of an explosion structure of a two-part photovoltaic module according to a preferred embodiment of the present invention;

fig. 5 is a schematic diagram of an electrical structure of a bi-body photovoltaic module according to a preferred embodiment of the present invention (i.e., a circuit connection structure diagram of a PN junction chip);

fig. 6 is an exploded schematic view of a two-part photovoltaic module according to a second preferred embodiment of the present invention;

fig. 7 is a schematic diagram of an electrical structure of a binary photovoltaic module according to a second preferred embodiment of the present invention (i.e., a circuit connection structure diagram of a PN junction chip);

fig. 8 is an exploded schematic view of a bipartite photovoltaic module disposed in a bipartite photovoltaic junction box according to a preferred embodiment of the present invention;

fig. 9 is a schematic top view of a bi-body photovoltaic module disposed in a bi-body photovoltaic junction box according to a preferred embodiment of the present invention (when the cover is removed);

fig. 10 is a schematic top view of a bi-component photovoltaic module disposed in a bi-component photovoltaic junction box according to a third preferred embodiment of the present invention (when the cover is removed);

fig. 11 is a schematic view of a bottom view structure of a bi-parting photovoltaic junction box of the third preferred embodiment of the present invention, in which a bi-parting photovoltaic module is disposed;

fig. 12 is a first schematic structural diagram (axial view) of a combined structure of a four-part photovoltaic junction box according to a preferred embodiment of the present invention;

fig. 13 is a second schematic structural view (a top view when the cover is removed) of the combined structure of the two-part photovoltaic junction box according to the fourth preferred embodiment of the present invention;

fig. 14 is a third schematic structural view (bottom view) of a combined structure of a two-part photovoltaic junction box in the fourth preferred embodiment of the present invention;

fig. 15 is a schematic diagram of an electrical performance structure of a combined structure of the two-part photovoltaic junction box assembly corresponding to fig. 12 to 14 in the fourth preferred embodiment of the present invention (i.e., a circuit connection structure diagram of a PN junction chip);

in the figure: the photovoltaic module comprises an A-bipartite photovoltaic module, a B-bipartite photovoltaic junction box, a C-module battery piece, a 1-conductive piece group, a 11-conductive piece I, a 111-confluence belt mounting groove I, a 12-conductive piece II, a 121-confluence belt mounting groove II, a 13-conductive piece III, a 131-confluence belt mounting groove III, a 15-insulator, a 151-confluence belt clearance groove, a 152-heat dissipation clearance groove, a 153-guide inclined plane I, a 16-jumper wire, a 17-PN junction chip, an 18-positioning hole, a 19-foolproof structure and a 20-waterproof groove;

3-lower box body, 31-inner cavity, 311-confluence strap lead-in port, 312-threading hole, 313-supporting part, 314-positioning part, 315-guide inclined plane II, 316-locking groove, 317-clamping welding notch, 32-bottom plate, 321-glue overflow hole, 322-glue overflow receiving groove, 33-cavity wall, 331-buckling part, 34-bracket, 35-glue overflow groove, 4-cover body, 41-clamping groove, 42-sealing ring and 5-line locking plate;

6-bus bar, 7-external photovoltaic junction box, 8-conductive module and 9-cable.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic drawings and illustrate, by way of illustration only, the basic structure of the invention, and which therefore show only the constituents relevant to the invention.

It should be noted that, if directional indications (such as up, down, bottom, top, etc.) are involved in the embodiments of the present invention, the directional indications are only used for explaining the relative position relationship between the components, the motion situation, etc. in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are intended to be inclusive and mean, for example, that there may be a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

As shown in fig. 1 to 5, a binary photovoltaic module a includes a conductive sheet set 1 having a plurality of installation slots for bus bars 6, the conductive sheet set 1 includes a first conductive sheet 11, a second conductive sheet 12, and a third conductive sheet 13 that are independent of each other, the first conductive sheet 11 is in a chevron structure, and the second conductive sheet 12 and the third conductive sheet 13 are in a U-shaped structure; and the two ends of the first conducting sheet 11 extend into the grooves of the second conducting sheet 12 and the third conducting sheet 13 respectively, and the first conducting sheet 11, the second conducting sheet 12 and the third conducting sheet 13 are not in direct electrical contact. The first conducting plate 11 is electrically connected with the second conducting plate 12 through a group of PN junction chips 17 and a jumper wire 16, and the first conducting plate 11 is electrically connected with the third conducting plate 13 through a group of PN junction chips 17 and a jumper wire 16. The PN junction chip 17 and the jumper wire 16 are wrapped with insulators 15, and at least part of the insulators 15 are overlapped with the first conducting plate 11, the second conducting plate 12 and the third conducting plate 13. The multiple bus bar 6 mounting grooves comprise a bus bar mounting groove II 121 and a bus bar mounting groove III 131 which are respectively formed between the insulator 15 and a gap reserved at the middle bulges of the conducting sheets II 12, III 13 and I11; and at least one bus bar mounting groove I111 is arranged on the middle protrusion of the first conducting strip 11. The first bus bar mounting groove 111, the second bus bar mounting groove 121 and the third bus bar mounting groove 131 are arranged in a U shape.

Three groups of heat dissipation and clearance grooves 152 and convergence belt clearance grooves 151 which respectively correspond to the convergence belt mounting groove I111, the convergence belt mounting groove II 121 and the convergence belt mounting groove III 131 are formed in the insulator 15; each group of heat dissipation avoiding groove 152 and the bus bar avoiding groove 151 are respectively located on the front side and the back side of the insulator 15, each group of heat dissipation avoiding groove 152 and the bus bar avoiding groove 151 are at least partially overlapped, and the overlapped part is at least partially overlapped with the corresponding bus bar 6 mounting groove. The bus bar clearance groove 151 is provided with a first guide inclined surface 153.

Furthermore, the first conducting plate 11, the second conducting plate 12 and the third conducting plate 13 are all provided with a stress relief groove or/and a stress relief hole embedded in the insulator 15. The second conducting plate 12 and the third conducting plate 13 are both provided with positioning holes 18. At least one of the second conductive sheet 12 and the third conductive sheet 13 is provided with a fool-proof structure 19. In this embodiment, the fool-proof structure 19 is disposed on the third conductive sheet 13, and the fool-proof structure 19 is disposed on the outer end of the third conductive sheet. The first conducting plate 11 and the second conducting plate 12 are both provided with waterproof grooves 20 embedded in the insulator 15. The waterproof groove 20 has a structure with a saw-toothed cross section, but is not limited thereto, and may have a wave-shaped structure in other embodiments.

Example two

As shown in fig. 6 and 7, in the first embodiment, the first conducting plate 11 is electrically connected to the second conducting plate 12 through two sets of PN junction chips 17 and the jumper 16, and the first conducting plate 11 is electrically connected to the third conducting plate 13 through two sets of PN junction chips 17 and the jumper 16; the combination results in a product structure and an electrical performance structure as in fig. 6, 7.

EXAMPLE III

As shown in fig. 8 to 10, on the basis of the first embodiment or the second embodiment, a two-part photovoltaic junction box B is provided with two split photovoltaic modules a; two split type photovoltaic terminal box B include box body 3 down and can be relative down the lid 4 that box body 3 opened and shut from top to bottom, be provided with inner chamber 31 in the box body 3 down, 3 bottoms of box body are provided with three area of converging that communicate with inner chamber 31 and introduce a 311 down, and the opening part at inner chamber 31 top is established to lid 4 sealed cowling, and is provided with two split type photovoltaic module A in inner chamber 31, and still is provided with the through wires hole 312 that is used for wearing to establish cable 9 on box body 3 down. Furthermore, sealing elements can be arranged in the threading holes 312 and the wire pressing plate 5, and the penetrating cables 9 are sealed in an auxiliary mode through the sealing elements.

The lower box body 3 comprises a bottom plate 32 and a cavity wall 33 arranged on the bottom plate 32, and the cavity wall 33 and the bottom plate 32 are combined to form an inner cavity 31. The cavity wall 33 is provided with a plurality of slots 41, and the cover 4 is provided with a fastening portion 331 which is in limit fastening with the slots 41. In other embodiments, the cavity wall 33 may be provided with a plurality of fastening portions 331 at an upper portion thereof, and the cover 4 may be provided with a locking groove 41 for limiting and locking with the fastening portions 331. A bracket 34 corresponding to the convergence belt lead-in opening 311 is arranged in the inner cavity 31, and a two-part photovoltaic module A is arranged on the bracket 34; a plurality of supporting parts 313 and positioning parts 314 for supporting and positioning the two-part photovoltaic module a are arranged in the inner cavity 31. The back of the bottom plate 32 is provided with an overflow glue receiving groove 322 which is concave from outside to inside, and the overflow glue receiving groove 322 is connected with the bus bar lead-in opening 311; the bottom plate 32 is provided with a plurality of glue overflow holes 321 communicated with the inner cavity 31. The convergence belt introducing port 311 is provided with a second guide inclined surface 315 which is inclined inwards and gradually contracted; the bracket 34 is further provided with a plurality of glue overflow grooves 35. A wire locking groove 316 is arranged below the threading hole 312 on the lower box body 3, a wire locking plate 5 which can be assembled with the mounting groove is arranged on the wire locking groove 316, and the wire locking plate 5 can be assembled and connected with the lower box body 3 through a screw piece, but the invention is not limited to this, and other locking connection structures can be adopted in other embodiments. The bottom of the lower box body 3 is also provided with a clamping and welding notch 317 on one side of the locking wire groove 316, so that the cable 9 and the conducting strip group 1 can be conveniently clamped and welded in the later stage. Furthermore, a bus bar strip 6 connected with the conducting strip group 1 penetrates through the bus bar strip introducing port 311, and the bus bar strip introducing port 311 is further provided with a sealant for plugging the bus bar strip introducing port 311 and wrapping the bus bar strip 6.

Example four

As shown in fig. 12 to 15, in the third embodiment, a complete set of the combined structure of the two-part photovoltaic junction box B adopts the two-part photovoltaic junction box B provided with the two-part photovoltaic module a. The combination of the bipartite photovoltaic module A in the two split photovoltaic junction boxes B and the conductive module 8 in the external photovoltaic junction box 7 is electrically connected with the module cell C through the bus bar 6 respectively to form a bypass protection device.

Specifically, the external photovoltaic junction box 7 and the conductive module 8 thereof described herein may be selected from the photovoltaic junction box and the conductive module 8 in the prior art, for example, the patent application nos.: a power supply bypass management module junction box and junction box assembly of CN 202022254422.5; the patent application numbers are: conductive module 8 assembly of a photovoltaic connector of cn202022254423. x; but not limited to this, the model can be selected according to the actual use requirement. The bus bars 6 are connected to form a complete set of combined structure of the two-body photovoltaic junction box B shown in figures 12-14.

The working principle is as follows:

the two-part photovoltaic module a is a combined structure as shown in fig. 3 to 5, in which the first conductive sheet 11, the second conductive sheet 12, and the third conductive sheet 13 are arranged, and two PN junction chips 17 are respectively mounted on the first conductive sheet 11 and the second conductive sheet 12. And a PN junction chip 17 welded on the second conducting plate 12 is electrically connected with the first conducting plate 11 through a jumper 16. And a PN junction chip 17 welded on the first conducting strip 11 is electrically connected with the second conducting strip 12 through a jumper 16. An electrical structure is formed as shown in fig. 5. The first conducting sheet 11, the second conducting sheet 12, the third conducting sheet 13, the jumper wire 16 arranged on the first conducting sheet 11, the second conducting sheet 12 and the PN junction chip 17 are encapsulated through the insulator 15, a confluence belt mounting groove second 121 and a confluence belt mounting groove third 131 are formed through gaps among the insulator 15, the first conducting sheet 11, the second conducting sheet 12 and the third conducting sheet 13, a confluence belt mounting groove first 111 is arranged on the first conducting sheet 11, and the bipartite photovoltaic module A shown in the figures 1-5 is formed. The overflow glue accommodating groove 322 is connected with the bus bar introducing port 311, which is beneficial to improving the convenience of the penetration of the bus bar 6 and the stability after installation; the part that converges that extends to in lower box body 3 after the installation of later stage can be spacing to inlay and establish in the groove 322 is accomodate to excessive glue, has promoted the installation stability of converging area 6. The overflow glue accommodating groove 322 arranged on the bottom plate 32 and the overflow glue hole 321 communicated with the plurality of inner cavities 31 facilitate the overflow of glue pouring (back plate gluing) in the middle and later periods of production. The glue overflowing hole 321, the glue overflowing groove 35 and the glue overflowing accommodating groove 322 are used for driving glue to be filled to the box bottom to wrap the bus bar, and the safety of connection between the junction box and the assembly is improved.

The combination of the bipartite photovoltaic module A in the two split photovoltaic junction boxes B and the conductive module 8 in the external photovoltaic junction box 7 is electrically connected with the module cell C through the bus bar 6 respectively to form a bypass protection device. The cable 9 is connected with one end of the bipartite photovoltaic module A of the bipartite photovoltaic junction box B, namely is connected with one end of a conducting strip III 13 of the bipartite photovoltaic module A, three bus bars of the bipartite photovoltaic module A are provided with a first bus bar mounting groove 111, a second bus bar mounting groove 121 and a third bus bar mounting groove 131 which are respectively connected with a bus bar 6 in a penetrating manner, and the three bus bars 6 are respectively and independently electrically connected with a first conducting strip 11, a second conducting strip 12 and a third conducting strip 13. The other end of the bus bar 6 electrically connected with the second conducting strip 12 of the two split photovoltaic modules A is electrically connected with one end of the module cell C. The bus bar mounting grooves of the pair of conducting strips of the conducting module 8 of the external photovoltaic junction box 7 are respectively and electrically connected with a bus bar 6, and the other end of the assembly cell C is electrically connected with one end of the conducting module 8 of the external photovoltaic junction box 7 through the bus bar 6. The other end of the conductive module 8 is connected with a cable 9. The complete set of combined structure of the two-part photovoltaic junction box B as shown in FIGS. 12-15, namely the bypass protection device of the module cell C, is formed.

A bipartite formula photovoltaic terminal box B and integrated configuration thereof adopts bipartite formula photovoltaic module A's structural compatibility strong, can place the chip of multiple unnecessary specification and promoted PN junction chip 17's installation compatibility. Through the combined structure of the heat dissipation empty avoiding groove 152 and the bus bar empty avoiding groove 151, the heat dissipation performance of the bipartite photovoltaic module A is effectively guaranteed. The arrangement of the heat dissipation clearance groove 152 enables the exposed area of the conducting strip to be large, heat dissipation is good, and junction temperature is low. Each group of radiating and avoiding grooves 152 and the bus-converging belt and avoiding grooves 151 are at least partially overlapped, the overlapped part is at least partially overlapped with the corresponding bus-converging belt 6 mounting groove, and the bus-converging belt and avoiding grooves 151 are provided with guide inclined planes, so that the bus bars are conveniently and intensively mounted. The overflow glue accommodating groove 322 is connected with the bus bar leading-in port 311, which is beneficial to the penetration of the bus bar 6 and the stability after installation; the part of the bus bar 6 extending into the box body after the later installation can be embedded in the overflow glue accommodating groove 322 in a limiting way, so that the installation stability of the bus bar 6 is improved. The overflow glue accommodating groove 322 and the plurality of overflow glue holes 321 communicated with the inner cavity 31 are arranged on the bottom plate 32, so that the overflow of glue pouring in the middle and later periods of production is facilitated. The glue overflowing hole 321, the glue overflowing groove 35 and the glue overflowing accommodating groove 322 are used for driving glue to be filled to the box bottom to wrap the bus bar, and the safety of connection between the junction box and the assembly is improved. The bipartite formula photovoltaic module A among two split type photovoltaic terminal boxes B can be connected with the electrically conductive module 8 electricity in the outside photovoltaic terminal box 7, and the combination forms bypass protection device, has promoted the use variety of photovoltaic terminal box subassembly. The heat dissipation performance, the installation convenience and the stability are good; excellent mounting adaptability of the PN junction chip 17.

In light of the foregoing, it is to be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. A bipartite body type photovoltaic module comprises a conducting strip group provided with a plurality of bus bar mounting grooves, wherein the conducting strip group comprises a conducting strip I, a conducting strip II and a conducting strip III which are mutually independent; the conducting strip I is electrically connected with the conducting strip II and the conducting strip III through a PN junction chip and a jumper wire respectively, insulators are wrapped on the PN junction chip and the jumper wire, and at least parts of the insulators are overlapped with the conducting strip I, the conducting strip II and the conducting strip III; the method is characterized in that: the insulator is also provided with a plurality of groups of radiating and avoiding grooves and converging belt and avoiding grooves; every group dispels the heat and keeps away the dead slot and converge and take the dead slot to lie in the positive and negative both sides of insulator respectively, and every group dispels the heat and keeps away the dead slot and converge and take the dead slot to keep away at least partial coincidence, and coincidence department and the corresponding strip mounting groove that converges overlap at least partially.

2. The bi-sectional photovoltaic module of claim 1, wherein: the first conducting plate adopts a structure in a shape of Chinese character ' shan ', and the second conducting plate and the third conducting plate adopt a structure in a shape of U '; two ends of the first conducting plate extend into the grooves of the second conducting plate and the third conducting plate respectively; the plurality of bus bar mounting grooves comprise a second bus bar mounting groove and a third bus bar mounting groove which are respectively formed between a gap reserved at a middle bulge of the first conductive plate and the insulator and a second conductive plate and a third conductive plate.

3. The bi-sectional photovoltaic module of claim 2, wherein: the plurality of current-collecting belt mounting grooves further comprise at least one current-collecting belt mounting groove I arranged on the middle protrusion of the first conducting plate.

4. The bi-sectional photovoltaic module of claim 3, wherein: the bus bar mounting groove I, the bus bar mounting groove II and the bus bar mounting groove III are arranged in a U shape;

the insulator is provided with a heat dissipation and clearance groove and a bus bar clearance groove which at least correspond to the bus bar mounting groove I, the bus bar mounting groove II and the bus bar mounting groove III; the bus bar clearance groove is provided with a first guide inclined plane.

5. The utility model provides a bipartite formula photovoltaic terminal box which characterized in that: providing the bipartite photovoltaic module of claim 1; the two-body photovoltaic junction box comprises a lower box body and a cover body capable of being opened and closed up and down, wherein an inner cavity is formed in the lower box body, a plurality of convergence belt introducing ports communicated with the inner cavity are formed in the bottom of the lower box body, a cover body sealing cover is arranged at an opening at the top of the inner cavity, two-body photovoltaic modules are arranged in the inner cavity, and threading holes used for penetrating cables are formed in the lower box body.

6. The bi-block photovoltaic junction box of claim 5, wherein: the lower box body comprises a bottom plate and a cavity wall arranged on the bottom plate, and the cavity wall and the bottom plate are combined to form the inner cavity; a bracket corresponding to the convergence belt lead-in port is arranged in the inner cavity, and two split photovoltaic assemblies are mounted on the bracket; and a plurality of supporting parts or/and positioning parts for supporting and positioning the two split photovoltaic assemblies are arranged in the inner cavity.

7. The bi-block photovoltaic junction box of claim 6, wherein: the back surface of the bottom plate is provided with an overflowing glue accommodating groove which is sunken from outside to inside, and the overflowing glue accommodating groove is connected with the confluence belt lead-in port; or/and the bottom plate is provided with a plurality of glue overflow holes communicated with the inner cavity.

8. The bi-block photovoltaic junction box of claim 7, wherein: the convergence belt inlet is provided with a second guide inclined plane which is inclined inwards and gradually contracted; the bracket is also provided with a plurality of glue overflow grooves.

9. The bi-block photovoltaic junction box of claim 8, wherein: a thread locking groove is formed in the threading hole in the lower box body, and a thread locking plate which can be assembled with the mounting groove is arranged on the thread locking groove; the bottom of the lower box body is also provided with a clamping and welding notch positioned on one side of the wire locking groove.

10. The utility model provides a integrated configuration of bipartite formula photovoltaic terminal box which characterized in that: the bi-body photovoltaic junction box of any one of claims 5 to 9 is adopted, and the combination of the bi-body photovoltaic junction box and an external photovoltaic junction box is electrically connected with the component cell pieces through a plurality of bus bars respectively to form a bypass protection device.

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