Elastic sheet contact type solar cell split type junction box convenient to install

Abstract

The utility model discloses a spring contact type solar cell split junction box convenient to install, which comprises a positive junction box, a negative junction box and a middle junction box, and each of the positive junction box, the negative junction box and the middle junction box comprises a box body, a conductor arranged in the box body and a box cover covering the box body; one end of the conductor of each of the anode junction box and the cathode junction box is provided with a conductive elastic sheet which extends out from an opening at the bottom end of each box body; the conductor in the middle junction box comprises a first conducting strip, a second conducting strip and a bypass diode connected between the first conducting strip and the second conducting strip, and the first conducting strip is connected with the conductor in the positive junction box through a first connecting cable; the second conducting strip is connected with the electric conductor in the negative electrode junction box through a second connecting cable, the first conducting strip is connected with a positive electrode output cable, and the second conducting strip is connected with a negative electrode output cable. The utility model has the advantages of simpler structure and more convenience in installation.

Description

Technical Field

[0001] The utility model relates to the technical field of solar junction boxes, in particular to a spring-type solar cell split junction box which is convenient to install. Background Art

[0002] The solar module junction box is mainly composed of a box body, a box cover, a diode, a conductor, a base, a connector, a cable and other accessories. It is located between the solar cell array composed of solar cell modules and the solar cell charging control device. Its main function is to connect the power generated by the solar cell with the external circuit and conduct the current generated by the photovoltaic module.

[0003] At present, the split junction box on the market generally contains multiple junction boxes, each of which has a diode inside, and the positive and negative cables are distributed on two or more junction boxes. The split junction box can simplify the connection method of the busbars inside the stacked components, reduce the use of busbars, reduce the overall loop resistance of the components, and increase the output power of the components; the positive and negative lead wires of the components are located on the side of the components close to the frame, and only a very short cable is needed when the components are installed and connected vertically, which greatly reduces the use of system cables, reduces the system series resistance, and increases the system power generation. The existing split junction box has the problem of complex structure and inconvenient installation. Utility Model Content

[0004] In view of the defects in the prior art, the utility model provides a spring-type contact solar cell split junction box that is easy to install, so that the structure is simpler and the installation is more convenient.

[0005] The utility model provides a spring-type solar cell split junction box that is easy to install, including a positive junction box, a negative junction box and an intermediate junction box, wherein the positive junction box, the negative junction box and the intermediate junction box each include a box body, a conductor arranged in the box body and a box cover arranged on the box body;

[0006] One end of the conductor of the positive terminal box and the negative terminal box is respectively provided with a conductive spring extending from the opening at the bottom end of each box body;

[0007] The conductor in the intermediate junction box includes a first conductive sheet, a second conductive sheet, and a bypass diode connected between the first conductive sheet and the second conductive sheet. The first conductive sheet is connected to the conductor in the positive junction box via a first connecting cable, and the second conductive sheet is connected to the conductor in the negative junction box via a second connecting cable. The first conductive sheet is connected to a positive output cable extending out of the intermediate junction box, and the second conductive sheet is connected to a negative output cable extending out of the intermediate junction box.

[0008] Furthermore, the conductors in the positive terminal box and the negative terminal box are respectively installed in their respective box bodies through a slide slot spring-lock structure, and the slide slot spring-lock structure includes a positioning column and a fixing spring sheet arranged in the box body, a slide slot and a fixing hole opened on the conductor, and a clamping slot portion arranged in the box body and respectively located on both sides of the fixing spring sheet, the positioning column is provided with a clamping portion, and a clamping column is provided on the upper side of the free end of the fixing spring sheet, and the two ends of the slide slot are respectively provided with a large hole portion for the positioning column to be inserted and a small hole portion that can be clamped with the clamping portion of the positioning column, when the clamping portion of the positioning column slides from the large hole portion of the slide slot into the small hole portion, the clamping column at the free end of the fixing spring sheet is clamped into the fixing hole, and the two side portions of the conductor are respectively clamped into the clamping slot portions on both sides.

[0009] Furthermore, a plurality of fixing columns are provided in the intermediate junction box, and a plurality of mounting holes fixed to the fixing columns in a one-to-one correspondence are provided on the first conductive sheet and the second conductive sheet.

[0010] Furthermore, one end of the positive terminal box is provided with a positive terminal port for the first connecting cable to pass through, one end of the negative terminal box is provided with a negative terminal port for the second connecting cable to pass through, one end of the intermediate terminal box is provided with an intermediate positive inlet for the first connecting cable to pass through and an intermediate positive outlet for the positive output cable to pass through, and the other end of the intermediate terminal box is provided with an intermediate negative inlet for the second connecting cable to pass through and an intermediate negative outlet for the negative output cable to pass through.

[0011] Furthermore, a positive wiring block is provided at one end of the positive terminal box for pressing the first connection cable into the positive terminal port, a negative wiring block is provided at one end of the negative terminal box for pressing the second connection cable into the negative terminal port, a first intermediate clamp is provided at one end of the intermediate terminal box for respectively pressing the first connection cable and the positive output cable into the intermediate positive terminal inlet and the intermediate positive terminal outlet, and a second intermediate clamp is provided at the other end of the intermediate terminal box for respectively pressing the second connection cable and the negative output cable into the intermediate negative terminal inlet and the intermediate negative terminal outlet.

[0012] Furthermore, a first wiring slot for connecting to the first connecting cable is provided on the conductor in the positive terminal box at the positive terminal port, a second wiring slot for connecting to the second connecting cable is provided on the conductor in the negative terminal box at the positive terminal port, a third wiring slot for connecting to the first connecting cable is provided on the first conductive sheet at the intermediate positive terminal inlet, a fourth wiring slot for connecting to the positive output cable is provided on the first conductive sheet at the intermediate positive terminal outlet, a fifth wiring slot for connecting to the second connecting cable is provided on the second conductive sheet at the intermediate negative terminal inlet, and a sixth wiring slot for connecting to the negative output cable is provided on the second conductive sheet at the intermediate negative terminal outlet.

[0013] Furthermore, a plurality of connection posts are arranged around the upper parts of the positive terminal box, the negative terminal box and the intermediate terminal box, and a plurality of connection holes are arranged around the lower parts of the positive terminal box, the negative terminal box and the intermediate terminal box, which are matched with each of the connection posts one by one.

[0014] Furthermore, buckles and limiting columns for pre-fixing with the back plate of the photovoltaic module are provided at the lower parts of the positive terminal box, the negative terminal box and the intermediate terminal box.

[0015] Furthermore, a circle of annular grooves are provided at the bottom of the positive electrode junction box, the negative electrode junction box and the intermediate junction box.

[0016] Furthermore, a wire clamping arm is provided on the side of the intermediate junction box, and a wire clamping groove is provided on the wire clamping arm.

[0017] The beneficial effects of the utility model are embodied in:

[0018] During installation, apply backplane glue to the bottom of the positive junction box, negative junction box and middle junction box. When sticking the positive junction box and negative junction box to the solar photovoltaic module, ensure that the conductive springs of the conductors in the positive and negative junction boxes pass through the contact holes on the backplane glass of the photovoltaic module. The conductive springs on the conductors in the positive and negative junction boxes are pressed tightly against the busbars laid on the photovoltaic module and welded. Then inject potting glue into the three junction boxes, cover them with the top cover and they can be used.

[0019] Compared with the original traditional junction box, the biggest difference of the present application is that bypass diodes are not arranged in the positive junction box and the negative junction box, and only conductive springs connected to the busbars of the photovoltaic components are arranged respectively. The positive junction box and the negative junction box are connected to the middle junction box by photovoltaic cables, and a bypass diode arranged in the middle junction box forms a complete electrical circuit, which plays the role of electrical connection and bypass protection for the photovoltaic components. The structure is simple and the installation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0021] Figure 1 It is a structural schematic diagram of the front side of the embodiment of the utility model;

[0022] Figure 2 It is a schematic structural stereogram of the back side of the embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the intermediate junction box in the embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the positive electrode junction box in the embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the negative electrode junction box in the embodiment of the utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the positive and negative conductors in the embodiment of the utility model;

[0027] Figure 7 This is a schematic diagram of the structure of the first conductive sheet / the second conductive sheet in an embodiment of the utility model;

[0028] Figure 8 It is a schematic diagram of the installation of the positive electrode junction box in the embodiment of the utility model.

[0029] In the accompanying drawings, 100-positive terminal box; 200-negative terminal box; 300-intermediate terminal box; 310-cable arm; 311-cable slot; 410-box body; 420-conductor; 421-conductive spring; 422-first conductive sheet; 423-second conductive sheet; 424-bypass diode; 425-first wiring slot; 426-second wiring slot; 427-third wiring slot; 428-fourth wiring slot; 429-fifth wiring slot; 4210-sixth wiring slot; 430-box cover; 441-positioning column; 442-fixing spring; 443-slide; 444-fixing hole; 445-slot portion; 446-clamping portion; 4 47-clamping column; 451-fixing column; 452-mounting hole; 461-positive pole wiring port; 462-negative pole wiring port; 463-middle positive pole inlet; 464-middle positive pole outlet; 465-middle negative pole inlet; 466-middle negative pole outlet; 467-positive pole wiring block; 468-negative pole wiring block; 469-first middle block; 4610-second middle block; 471-connecting column; 472-connecting hole; 481-buckle; 482-limiting column; 490-annular groove; 500-first connecting cable; 600-second connecting cable connection; 700-positive pole output cable; 800-negative pole output cable. DETAILED DESCRIPTION

[0030] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0031] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0032] like Figure 1-Figure 8 As shown, the embodiment of the utility model provides a spring-type solar cell split junction box that is easy to install, including a positive electrode junction box 100, a negative electrode junction box 200 and an intermediate junction box 300.

[0033] The positive electrode junction box 100 , the negative electrode junction box 200 and the intermediate junction box 300 each include a box body 410 , a conductor 420 disposed in the box body 410 , and a box cover 430 disposed on the box body 410 .

[0034] One end of the conductor 420 of the positive electrode junction box 100 and the negative electrode junction box 200 is respectively provided with a conductive spring 421 extending from the opening at the bottom end of the box body 410 .

[0035] The conductor 420 in the intermediate junction box 300 includes a first conductive sheet 422, a second conductive sheet 423 and a bypass diode 424 connected between the first conductive sheet 422 and the second conductive sheet 423. The first conductive sheet 422 is connected to the conductor 420 in the positive junction box 100 via a first connecting cable 500, and the second conductive sheet 423 is connected to the conductor 420 in the negative junction box 200 via a second connecting cable 600. The first conductive sheet 422 is connected to a positive output cable 700 extending out of the intermediate junction box 300, and the second conductive sheet 423 is connected to a negative output cable 800 extending out of the intermediate junction box 300.

[0036] During installation, apply backplane glue to the bottom of the positive terminal box 100, the negative terminal box 200 and the middle terminal box 300. When the positive terminal box 100 and the negative terminal box 200 are glued to the solar photovoltaic module, it is necessary to ensure that the conductive spring pieces 421 of the conductor 420 in the positive and negative terminal boxes 200 pass through the contact holes on the backplane glass of the photovoltaic module, and the conductive spring pieces 421 on the conductor 420 in the positive and negative terminal boxes 200 are pressed against the busbar laid on the photovoltaic module in close contact, and welded, and then inject potting glue into the three terminal boxes, cover the top cover and use it.

[0037] Compared with the original traditional junction box, the biggest difference of the present application is that the bypass diode 424 is not set in the positive junction box 100 and the negative junction box 200, and only a conductive spring 421 connected to the busbar of the photovoltaic module is set. The positive junction box 100 and the negative junction box 200 are connected to the intermediate junction box 300 by a photovoltaic cable, and a bypass diode 424 is set in the intermediate junction box 300 to form a complete electrical circuit, which plays the role of electrical connection and bypass protection for the photovoltaic module. It has a simple structure and is easy to install.

[0038] Reference Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 8The conductors 420 in the positive terminal box 100 and the negative terminal box 200 are respectively installed in their respective box bodies 410 through a slide slot snap-in structure. The slide slot 443 snap-in structure includes a positioning column 441 and a fixing spring 442 arranged in the box body 410, a slide slot 443 and a fixing hole 444 opened on the conductor 420, and a clamping groove portion 445 arranged in the box body 410 and located on both sides of the fixing spring 442. The positioning column 441 is provided with a clamping portion 444. 46, a clamping column 447 is provided on the upper side of the free end of the fixing spring piece 442, and a large hole portion for inserting the positioning column 441 and a small hole portion capable of being clamped with the clamping portion 446 of the positioning column 441 are respectively provided at both ends of the slide groove 443. When the clamping portion 446 of the positioning column 441 slides from the large hole portion into the small hole portion of the slide groove 443, the clamping column 447 at the free end of the fixing spring piece 442 is clamped into the fixing hole 444, and the two side portions of the conductor 420 are respectively clamped into the clamping groove portions 445 on both sides.

[0039] When installing the conductor 420 in the positive terminal box 100 and the negative terminal box 200, align the large hole portion of the slide groove 443 on the conductor 420 with the positioning column 441, and then push the conductor 420 to one side of the slot portion 445, so that the small hole portion of the slide groove 443 on the conductor 420 is stuck under the clamping portion 446 of the positioning column 441, the clamping column 447 on the fixing spring 442 is stuck in the fixing hole 444 on the conductor 420, and the two sides of the conductor 420 are respectively stuck in the slot portions 445 on both sides, so that the conductor 420 in the positive terminal box 100 and the negative terminal box 200 can be fixedly installed, which is not only convenient to install, but also can keep the installation of the conductor 420 stable and effectively ensure the installation distance between the conductive spring 421 and the busbar hole.

[0040] Reference Figure 1 , Figure 3 and Figure 7 A plurality of fixing posts 451 are provided in the intermediate junction box 300, and a plurality of mounting holes 451 corresponding to and fixed on each fixing post 451 are provided on the first conductive sheet 422 and the second conductive sheet 423. When installing the conductor 420 of the intermediate junction box 300, the mounting holes 451 on the first conductive sheet 422 and the second conductive sheet 423 are respectively aligned with the fixing posts 451 installed in the intermediate junction box 300, and then each fixing post 451 is fixed by hot-melt.

[0041] Reference Figure 1-Figure 5In order to facilitate the outlet of the wires, one end of the positive terminal box 100 is provided with a positive terminal port 461 for the first connecting cable 500 to pass through, one end of the negative terminal box 200 is provided with a negative terminal port 462 for the second connecting cable 600 to pass through, one end of the intermediate terminal box 300 is provided with an intermediate positive inlet port 463 for the first connecting cable 500 to pass through and an intermediate positive outlet port 464 for the positive output cable 700 to pass through, and the other end of the intermediate terminal box 300 is provided with an intermediate negative inlet port 465 for the second connecting cable 600 to pass through and an intermediate negative outlet port 466 for the negative output cable 800 to pass through.

[0042] Preferably, a positive terminal block 467 is provided at one end of the positive terminal box 100 to compress the first connection cable 500 in the positive terminal port 461, and the positive terminal block 467 is welded at the positive terminal port 461 by ultrasonic welding. A negative terminal block 468 is provided at one end of the negative terminal box 200 to compress the second connection cable 600 in the negative terminal port 462, and the negative terminal block 468 is welded at the negative terminal port 462 by ultrasonic welding. A first intermediate block 469 is provided at one end of the intermediate terminal box 300 to compress the first connection cable 500 and the positive output cable 700 in the intermediate positive inlet port 463 and the intermediate positive outlet port 464, respectively, and the first intermediate block 469 is welded at the intermediate positive inlet port 463 and the intermediate positive outlet port 464 by ultrasonic welding. The other end of the intermediate junction box 300 is provided with a second intermediate pressing block 4610 for respectively pressing the second connecting cable 600 and the negative output cable 800 into the intermediate negative electrode inlet 465 and the intermediate negative electrode outlet 466. The second intermediate pressing block 4610 is specifically welded at the intermediate negative electrode inlet 465 and the intermediate negative electrode outlet 466 by an ultrasonic welding process.

[0043] In order to facilitate the injection of glue into the intermediate junction box 300 , the first intermediate pressing block 469 and the second intermediate pressing block 4610 are arranged on the front side of the intermediate junction box 300 , and the first intermediate pressing block 469 and the second intermediate pressing block 4610 are provided with injection holes for injecting glue into the intermediate junction box 300 .

[0044] For the convenience of wiring, a first wiring groove 425 for connecting to the first connection cable 500 is provided at the positive wiring port 461 on the conductor 420 in the positive terminal box 100, a second wiring groove 426 for connecting to the second connection cable 600 is provided at the positive wiring port 461 on the conductor 420 in the negative terminal box 200, a third wiring groove 427 for connecting to the first connection cable 500 is provided at the middle positive inlet 463 on the first conductive sheet 422, a fourth wiring groove 428 for connecting to the positive output cable 700 is provided at the middle positive outlet 464 on the first conductive sheet 422, a fifth wiring groove 429 for connecting to the second connection cable 600 is provided at the middle negative inlet 465 on the second conductive sheet 423, and a sixth wiring groove 4210 for connecting to the negative output cable 800 is provided at the middle negative outlet 466 on the second conductive sheet 423.

[0045] Reference Figure 1 and Figure 2 A plurality of connection posts 471 are arranged around the upper parts of the positive terminal box 100, the negative terminal box 200 and the intermediate terminal box 300, and a plurality of connection holes 472 are arranged around the lower parts of the positive terminal box 100, the negative terminal box 200 and the intermediate terminal box 300, which are matched with the connection posts 471 one by one. When stacked and packed, the connection posts 471 of two adjacent layers are inserted into the connection holes 472 one by one.

[0046] Reference Figure 2-Figure 5 The lower parts of the positive terminal box 100, the negative terminal box 200 and the intermediate terminal box 300 are provided with a clip 481 and a limit column 482 for pre-fixing with the back plate of the photovoltaic module. When the positive terminal box 100, the negative terminal box 200 and the intermediate terminal box 300 are pre-fixed with the back plate of the photovoltaic module, the clip 481 is snapped with the clip 481 on the back plate of the photovoltaic module, and the limit column 482 is connected with the positioning hole on the back plate of the photovoltaic module.

[0047] Continue to refer to Figure 2-Figure 5 A circle of annular grooves 490 are provided at the bottom of the positive terminal box 100, the negative terminal box 200 and the intermediate terminal box 300. By providing the annular grooves 490, the positive terminal box 100, the negative terminal box 200 and the intermediate terminal box 300 have better sealing when they are glued and fixed on the photovoltaic module.

[0048] Reference Figure 1 and Figure 3 A wire clamping arm 310 is provided on the side of the intermediate junction box 300, and a wire clamping groove 311 is provided on the wire clamping arm 310. The wire clamping groove 311 can be used to fix the positive output cable 700 and the negative output cable 800, and plays a role in cable management.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A spring-type solar cell split junction box that is easy to install, comprising a positive junction box, a negative junction box and an intermediate junction box, wherein the positive junction box, the negative junction box and the intermediate junction box each comprise a box body, a conductor disposed in the box body and a box cover disposed on the box body, characterized in that: One end of the conductor of the positive terminal box and the negative terminal box is respectively provided with a conductive spring extending from the opening at the bottom end of each box body; The conductor in the intermediate junction box includes a first conductive sheet, a second conductive sheet, and a bypass diode connected between the first conductive sheet and the second conductive sheet. The first conductive sheet is connected to the conductor in the positive junction box via a first connecting cable, and the second conductive sheet is connected to the conductor in the negative junction box via a second connecting cable. The first conductive sheet is connected to a positive output cable extending out of the intermediate junction box, and the second conductive sheet is connected to a negative output cable extending out of the intermediate junction box.

2. The easy-to-install spring-type solar cell split junction box according to claim 1, characterized in that: The conductors in the positive terminal box and the negative terminal box are respectively installed in their respective box bodies through a slide slot spring-lock structure, and the slide slot spring-lock structure includes a positioning column and a fixing spring sheet arranged in the box body, a slide slot and a fixing hole opened on the conductor, and a clamping slot portion arranged in the box body and respectively located on both sides of the fixing spring sheet, the positioning column is provided with a clamping portion, and a clamping column is provided on the upper side of the free end of the fixing spring sheet, and the two ends of the slide slot are respectively provided with a large hole portion for the positioning column to be inserted and a small hole portion that can be clamped with the clamping portion of the positioning column, when the clamping portion of the positioning column slides from the large hole portion of the slide slot into the small hole portion, the clamping column at the free end of the fixing spring sheet is clamped into the fixing hole, and the two side portions of the conductor are respectively clamped into the clamping slot portions on both sides.

3. The easy-to-install spring-type contact solar cell split junction box according to claim 1, characterized in that: A plurality of fixing columns are arranged in the intermediate junction box, and a plurality of mounting holes corresponding to and fixed on each of the fixing columns are arranged on the first conductive sheet and the second conductive sheet.

4. The easy-to-install spring-type contact solar cell split junction box according to claim 1, characterized in that: One end of the positive terminal box is provided with a positive terminal port for the first connecting cable to pass through, one end of the negative terminal box is provided with a negative terminal port for the second connecting cable to pass through, one end of the intermediate terminal box is provided with an intermediate positive inlet for the first connecting cable to pass through and an intermediate positive outlet for the positive output cable to pass through, and the other end of the intermediate terminal box is provided with an intermediate negative inlet for the second connecting cable to pass through and an intermediate negative outlet for the negative output cable to pass through.

5. The conveniently installed spring-type contact solar cell split junction box according to claim 4, characterized in that: One end of the positive terminal box is provided with a positive terminal block for pressing the first connection cable into the positive terminal port, one end of the negative terminal box is provided with a negative terminal block for pressing the second connection cable into the negative terminal port, one end of the intermediate terminal box is provided with a first intermediate block for pressing the first connection cable and the positive output cable into the intermediate positive inlet and the intermediate positive outlet, respectively, and the other end of the intermediate terminal box is provided with a second intermediate block for pressing the second connection cable and the negative output cable into the intermediate negative inlet and the intermediate negative outlet, respectively.

6. The conveniently installed spring-type contact solar cell split junction box according to claim 4, characterized in that: A first wiring slot for connecting to the first connection cable is provided on the conductor in the positive terminal box at the positive terminal port, a second wiring slot for connecting to the second connection cable is provided on the conductor in the negative terminal box at the positive terminal port, a third wiring slot for connecting to the first connection cable is provided on the first conductive sheet at the intermediate positive terminal inlet, a fourth wiring slot for connecting to the positive output cable is provided on the first conductive sheet at the intermediate positive terminal outlet, a fifth wiring slot for connecting to the second connection cable is provided on the second conductive sheet at the intermediate negative terminal inlet, and a sixth wiring slot for connecting to the negative output cable is provided on the second conductive sheet at the intermediate negative terminal outlet.

7. The easy-to-install spring-type solar cell split junction box according to claim 1, characterized in that: A plurality of connection posts are arranged around the upper parts of the positive terminal box, the negative terminal box and the intermediate terminal box, and a plurality of connection holes are arranged around the lower parts of the positive terminal box, the negative terminal box and the intermediate terminal box, which are matched with the connection posts one by one.

8. The easy-to-install spring-type solar cell split junction box according to claim 1, characterized in that: Buckles and limiting columns for pre-fixing with the back plate of the photovoltaic module are provided at the lower parts of the positive electrode junction box, the negative electrode junction box and the intermediate junction box.

9. The conveniently installed spring-type contact solar cell split junction box according to claim 1, characterized in that: A circle of annular grooves is provided at the bottom of the positive electrode junction box, the negative electrode junction box and the intermediate junction box.

10. The conveniently installed spring-type contact solar cell split junction box according to claim 1, characterized in that: A wire clamping arm is provided on the side of the intermediate junction box, and a wire clamping groove is provided on the wire clamping arm.

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