Solar cell junction box module

Abstract

The present invention discloses a module of a solar cell junction box, comprising a package, a positive terminal, a negative terminal, and a diode chip, wherein the right end of the positive terminal is provided with a positive wiring nose, the left part is provided with a right strip hole, and the left end of the negative terminal is provided with a negative wiring nose, and the right part is provided with a left strip hole; the diode chip is welded and fixed on the positive terminal and is located to the left of the right strip hole, one pole of the diode chip is electrically connected to the positive terminal, and the other pole is connected to the negative terminal through a jumper; the package comprises a bottom box and an upper cover, the bottom box and the upper cover are both in the shape of an "I" so that the right side of the bottom box and the upper cover have a right notch area, and the left side has a left notch area; and the left part of the positive terminal, the right part of the negative terminal, and the diode chip are all packaged in the package, and the right strip hole is located in the right notch area, and the left strip hole is located in the left notch area. The advantages are: small size, low cost, and good quality.

Description

Technical Field

[0001] The invention relates to the technical field of solar energy accessories, in particular to a module of a solar cell junction box. Background Art

[0002] Common solar cell junction boxes at least include a package, a positive terminal, a negative terminal and a diode chip. The two electrodes of the diode chip (i.e., the two poles of the diode chip) are electrically connected to the positive terminal and the negative terminal respectively, and then the positive terminal, the negative terminal and the diode chip are all packaged in the package, and resin can be used for auxiliary packaging. Its disadvantages are: large size, limited scope of application, and high cost. Summary of the invention

[0003] The object of the present invention is to provide a module of a solar cell junction box, which has the characteristics of small size, low cost and good quality.

[0004] The technical solution adopted by the present invention is: a module of a solar cell junction box includes a package, a positive terminal, a negative terminal, and a diode chip, wherein the package is made of insulating material, and the positive terminal and the negative terminal are both stamped from copper plates.

[0005] The right end of the positive terminal is provided with a positive electrode connection nose extending to the right, and the middle position of the left part is provided with a right strip hole extending in the vertical direction, and the left end of the negative terminal is provided with a negative electrode connection nose extending to the left, and the middle position of the right part is provided with a left strip hole extending in the vertical direction;

[0006] The diode chip is welded and fixed on the positive terminal and is located to the left of the right strip-shaped hole. At the same time, one pole of the diode chip is electrically connected to the positive terminal, and the other pole is connected to the negative terminal through a jumper wire.

[0007] The packaging body comprises a bottom box and an upper cover, wherein the bottom box and the upper cover are both in the shape of an I-shaped character, so that the right side of the bottom box and the upper cover both have a right notch area, and the left side both have a left notch area;

[0008] as well as,

[0009] The left part of the positive terminal, the right part of the negative terminal and the diode chip are all packaged in the package body, and the right strip hole is located in the right notch area, and the left strip hole is located in the left notch area.

[0010] A strip positioning block is provided in the middle position of the right part of the base box, and a cylindrical positioning block is provided on the front side and the rear side of the left part of the base box. At the same time, a strip positioning hole is provided in the middle position of the left part of the positive terminal, and a semicircular notch is provided on the front side and the rear side of the right part of the negative terminal. In addition, the strip positioning hole and the strip positioning block match each other, and the semicircular notch and the cylindrical positioning block match each other.

[0011] The positive electrode terminal lug and the negative electrode terminal lug are both "U"-shaped terminal lugs.

[0012] The opening of the positive terminal lug faces downward, and the opening of the negative terminal lug faces upward. At the same time, a negative cable clamping nose is provided on the left side of the positive terminal lug on the upper surface of the positive terminal, and a positive cable clamping nose is provided on the right side of the negative terminal lug on the lower surface of the negative terminal.

[0013] Compared with the prior art, the advantages of the present invention are: small size, low cost and good quality. The module of the solar cell junction box of the present invention reduces the space occupied by the product as a whole by minimizing the volume of the package body, making it compact and capable of being used in a variety of occasions. At the same time, the amount of solder paste used is reduced, and there is no need for excessive or even no welding process in production, which greatly reduces costs. In addition, the diode chip is directly welded to the terminal, rather than the common terminal and diode chip, which need to be welded into a conventional diode and then welded to the terminal, so that the contact resistance of the product is reduced, the power consumption is reduced, and the product can be directly packaged by the diode manufacturer, which is more professional and does not require secondary welding, so that there are no bubbles or empty welds at the welding points of the product, further ensuring the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 1 is a top view of a module of a solar cell junction box according to Embodiment 1 of the present invention (when the positive electrode junction box and the negative electrode junction box are not bent into a "U" shape);

[0016] Figure 2 is a top view of a module of a solar cell junction box according to embodiment 1 of the present invention;

[0017] Figure 3 yes Figure 2 A-A view;

[0018] Figure 4 yes Figure 2 Left view of

[0019] Figure 5 is a front view of a module of a solar cell junction box according to embodiment 1 of the present invention;

[0020] Figure 6 yes Figure 5 B-B view;

[0021] Figure 7 is a top view of the bottom box of embodiment 1 of the present invention;

[0022] Figure 8 is a top view of the positive terminal of Example 1 of the present invention;

[0023] Fig. 9 is a top view of the negative terminal of Example 1 of the present invention;

[0024] Fig.10 This is a front view of a module of a solar cell junction box according to a second embodiment of the present invention.

[0025] In the figure:

[0026] 10. packaging body, 11. bottom box, 111. front side portion, 112. rear side portion, 113. strip positioning block, 114. cylindrical positioning block;

[0027] 20. Positive terminal, 21. Positive terminal nose, 22. Right strip hole, 23. Strip positioning hole;

[0028] 30, negative terminal, 31, negative terminal nose, 32, left bar hole, 33, semicircular notch, 341, front side, 342, rear side;

[0029] 40. Diode chip;

[0030] 50. Jumper wire;

[0031] 60. The negative cable is stuck;

[0032] 70. The positive cable is stuck. DETAILED DESCRIPTION

[0033] Example 1

[0034] See Figures 1 to 9 As shown: a module of a solar cell junction box includes a package 10, a positive terminal 20, a negative terminal 30, a diode chip 40 and other components. The package 10 is made of insulating material, and the positive terminal 20 and the negative terminal 30 are both stamped from copper plates.

[0035] Further speaking:

[0036] The right end of the positive terminal 20 is provided with a positive electrode lug 21 extending to the right, and the middle position of the left portion is provided with a right strip hole 22 extending in the vertical direction. The left end of the negative terminal 30 is provided with a negative electrode lug 31 extending to the left, and the middle position of the right portion is provided with a left strip hole 32 extending in the vertical direction. For ease of assembly, the left strip hole 32 can be a semi-enclosed square hole, and the right strip hole 22 can be a closed square hole.

[0037] The diode chip 40 is welded and fixed on the positive terminal 20 and is located to the left of the right strip hole 22. In other words, the downward projection of the diode chip 40 falls within the downward projection range of the positive terminal 20. At the same time, one pole of the diode chip 40 is electrically connected to the positive terminal 20, and the other pole is connected to the negative terminal 30 through a jumper 50.

[0038] The packaging body 10 comprises a snap-fit ​​bottom box 11 and a top cover 12. The bottom box 11 and the top cover 12 are both in the shape of an I, so that the right side of the bottom box 11 and the top cover 12 have a right notch area 14, and the left side has a left notch area 15.

[0039] More specific:

[0040] After the bottom box 11 and the upper cover 12 are engaged, the left part of the positive terminal 20, the right part of the negative terminal 30, and the diode chip 40 are all packaged in the package body 10, and the right strip hole 22 is located in the right notch area 14, and the left strip hole 32 is located in the left notch area 15. That is, the downward projection of the right strip hole 22 falls within the downward projection range of the right notch area 14, and the downward projection of the left strip hole 32 falls within the downward projection range of the left notch area 15.

[0041] In this way, by reducing the volume of the packaging body 10 as much as possible, the module cost of the solar cell junction box is low, the structure is compact, and the application range is wide.

[0042] Optimized:

[0043] A strip positioning block 113 is provided in the middle position of the right part of the bottom box 11, and a cylindrical positioning block 114 is provided on the front side 111 and the rear side 112 of the left part of the bottom box 11. At the same time, a strip positioning hole 23 is provided in the middle position of the left part of the positive terminal 20, and a semicircular notch 33 is provided on the front side 341 and the rear side 342 of the right part of the negative terminal 30. And, the strip positioning hole 23 and the strip positioning block 113 match, and the semicircular notch 33 and the cylindrical positioning block 114 match each other. That is, after being assembled in place, the strip positioning hole 23 is clamped on the strip positioning block 113, and the semicircular notch 33 is clamped on the circumferential side of the corresponding cylindrical positioning block 114. In this way, not only a fool-proof design is formed to avoid the positive terminal 20 and the negative terminal 30 from being installed incorrectly, but also the structure of the product is more compact and not easy to fall apart, and the cable (not shown in the figure) is not easy to pull the product apart after being stressed.

[0044] Optimized:

[0045] The positive electrode terminal lug 21 and the negative electrode terminal lug 31 are both "U"-shaped terminal lugs, which makes it easier to connect cables.

[0046] Example 2

[0047] Combination Fig.10 As shown, the difference from Example 1 is only that:

[0048] On the premise that both the positive terminal lug 21 and the negative terminal lug 31 are "U"-shaped lugs, the opening of the positive terminal lug 21 faces downward, and the opening of the negative terminal lug 31 faces upward. At the same time, a negative cable clamping lug 60 is provided on the upper surface of the positive terminal 20 on the left side of the positive terminal lug 21, and a positive cable clamping lug 70 is provided on the lower surface of the negative terminal 30 on the right side of the negative terminal lug 31. Both the negative cable clamping lug 60 and the positive cable clamping lug 70 can be "U"-shaped lugs formed after stamping. In this way, the cable connected to the positive terminal lug 21 can be extended to the left and then insulated and clamped in the positive cable clamping lug 70, and the cable connected to the negative terminal lug 31 can be extended to the right and then insulated and clamped in the negative cable clamping lug 60, so that even if the cable is subjected to a large tensile force, it can be ensured that the product is not easily broken, especially the tensile force will not be transferred too much to the packaging body 10, and the service life of the product is finally extended.

[0049] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A module of a solar cell junction box, comprising a package (10), a positive terminal (20), a negative terminal (30), and a diode chip (40), wherein: The package (10) is made of insulating material, and the positive terminal (20) and the negative terminal (30) are both made by stamping copper plates, and are characterized by: The positive terminal (20) has a positive electrode connection nose (21) extending to the right at its right end, and a right strip-shaped hole (22) extending in the vertical direction at the middle position of the left portion; the negative terminal (30) has a negative electrode connection nose (31) extending to the left at its left end, and a left strip-shaped hole (32) extending in the vertical direction at the middle position of the right portion; The diode chip (40) is welded and fixed on the positive terminal (20) and is located to the left of the right strip-shaped hole (22); at the same time, one pole of the diode chip (40) is electrically connected to the positive terminal (20), and the other pole is connected to the negative terminal (30) via a jumper wire (50); The packaging body (10) comprises a bottom box (11) and an upper cover (12); the bottom box (11) and the upper cover (12) are both in the shape of an “I” character, so that the right sides of the bottom box (11) and the upper cover (12) each have a right notch area (14), and the left sides of the bottom box (11) and the upper cover (12) each have a left notch area (15); as well as, The left part of the positive terminal (20), the right part of the negative terminal (30), and the diode chip (40) are all packaged in the package body (10), and the right strip-shaped hole (22) is located in the right notch area (14), and the left strip-shaped hole (32) is located in the left notch area (15).

2. The module of the solar cell junction box according to claim 1, characterized in that: A strip positioning block (113) is provided in the middle of the right part of the bottom box (11), and a cylindrical positioning block (114) is provided on the front side (111) and the rear side (112) of the left part of the bottom box (11). At the same time, a strip positioning hole (23) is provided in the middle of the left part of the positive terminal (20), and a semicircular notch (33) is provided on the front side (341) and the rear side (342) of the right part of the negative terminal (30). The strip positioning hole (23) and the strip positioning block (113) match each other, and the semicircular notch (33) and the cylindrical positioning block (114) match each other.

3. The module of the solar cell junction box according to claim 1 or 2, characterized in that: The positive electrode terminal lug (21) and the negative electrode terminal lug (31) are both "U"-shaped terminal lugs.

4. The module of the solar cell junction box according to claim 3, characterized in that: The opening of the positive electrode wiring nose (21) faces downward, and the opening of the negative electrode wiring nose (31) faces upward. Meanwhile, a negative electrode cable clamping nose (60) is provided on the upper surface of the positive electrode terminal (20) on the left side of the positive electrode wiring nose (21), and a positive electrode cable clamping nose (70) is provided on the lower surface of the negative electrode terminal (30) on the right side of the negative electrode wiring nose (31).

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