High-strength solar photovoltaic module lead frame

Abstract

The utility model provides a high-strength solar photovoltaic module lead frame, which comprises a frame body and a module unit, the module unit comprises an anode frame and a cathode frame, the cathode frame and the anode frame are oppositely arranged, and a bonding area is arranged on one side of the anode frame close to the cathode frame. A slide island is arranged on one side, close to the positive electrode frame, of the negative electrode frame, a matching opening is formed in one side, close to the negative electrode frame, of the bonding area, the slide island is embedded in the matching opening, and a gap exists between the edge of the slide island and the matching opening; the frame body comprises side ribs which are arranged in parallel, and the plurality of positive electrode frames and the plurality of negative electrode frames are respectively connected into a row through connecting ribs and then are connected among the side ribs which are arranged in parallel through the connecting ribs. According to the utility model, the position relation of the bonding areas and the slide glass islands is adjusted to be combined in a crossed embedding manner from an opposite arrangement manner, so that the bonding strength between the positive electrode frame and the plastic package body and between the negative electrode frame and the plastic package body can be effectively improved, and the bending and fracture conditions are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic module technical field especially relates to a high strength solar photovoltaic module lead frame. BACKGROUND

[0002] Solar photovoltaic module formula photovoltaic module inner chip module, photovoltaic module includes lead frame and plastic package, and lead frame includes positive frame and negative frame, and positive frame and negative frame set up carrier island and bonding area respectively, and carrier island connects chip, and chip is bonded bonding area through bonding wire, realizes positive frame and negative frame bonding electric connection, and the welding wire on positive frame and negative frame, and the wire is connected to solar photovoltaic module outside, and the current solar photovoltaic module lead frame has the following problems:

[0003] 1) bonding area and carrier island are combined with plastic package through horizontal cooperation, and the combination strength is poor;

[0004] 2) the installation between wire fixing piece and positive frame and negative frame needs to rely on the setting position of the folding section to determine, and at the same time needs to rely on the positioning groove body with different spacing set in the upper and lower ends of lead frame to judge the installation direction. SUMMARY

[0005] The utility model solves the technical problem that the prior art has the defect, and the utility model provides a high strength solar photovoltaic module lead frame to solve one or more problems in the prior art.

[0006] To solve the above technical problem, the utility model adopts the technical scheme that a high strength solar photovoltaic module lead frame includes frame body and module unit,

[0007] The module unit includes positive frame and negative frame, and the negative frame and the positive frame are oppositely arranged, and the bonding area is arranged on the side of the positive frame close to the negative frame, and the carrier island is arranged on the side of the negative frame close to the positive frame, and the matching port is arranged on the side of the bonding area close to the negative frame, and the carrier island is embedded in the matching port, and there is a gap between the edge of the carrier island and the matching port;

[0008] The frame body includes parallelly arranged edge ribs, and the positive frame and the negative frame are connected to one row by connecting ribs and then connected between the parallelly arranged edge ribs.

[0009] Further, the depth of the matching port is not greater than the length of the bonding area, the length of the carrier island is less than the depth of the bonding area, and the sum of the width of the bonding area and the carrier island is less than the width of the lead frame.

[0010] Further, a plurality of bonding through holes are vertically and equidistantly arranged between the bonding area and the positive electrode frame, and a plurality of bonding through holes are vertically and equidistantly arranged between the slide island and the negative electrode frame.

[0011] Further, a positive electrode mark and a negative electrode mark are respectively engraved on the front surface of the positive electrode frame and the negative electrode frame.

[0012] Further, a tin storage groove is arranged between the bonding through hole and the positive electrode mark on the front surface of the positive electrode frame, and a tin storage groove is arranged between the bonding through hole and the negative electrode mark on the front surface of the negative electrode frame.

[0013] Further, a first connecting piece is fixedly arranged on the side of the positive electrode frame away from the negative electrode frame, a second connecting piece is fixedly arranged on the side of the negative electrode frame away from the positive electrode frame, and the lead fixing piece is fixedly connected with any one of the first connecting piece and the second connecting piece.

[0014] Further, the width of the first connecting piece and the second connecting piece is smaller than the width of the lead frame.

[0015] Further, a first connecting hole and a second connecting hole are fixedly arranged at the top corner of the end of the negative electrode frame away from the bonding area, a third connecting hole and a first connecting groove are fixedly arranged at the top corner of the end of the positive electrode frame away from the slide island, and a second connecting groove is arranged between the tin storage groove and the bonding area and between the tin storage groove and the slide island.

[0016] Further, the first connecting hole, the second connecting hole and the third connecting hole have the same hole diameter, and the width of the first connecting groove is the same as the diameter of the third connecting hole.

[0017] Further, a plurality of positioning holes and step holes are arranged on the edge rib along the length direction of the edge rib.

[0018] Compared with the prior art, the beneficial effects of the utility model include: by adjusting the positional relationship between the bonding area and the slide island from relative arrangement to cross-embedded combination, the combination strength between the positive electrode frame and the negative electrode frame and the plastic package body can be effectively improved, so that the bending and breaking of the positive electrode frame and the negative electrode frame can be avoided, and the bonding area and the slide island can effectively reduce the judgment of the positive electrode frame and the negative electrode frame by the positive and negative electrode marks. BRIEF DESCRIPTION OF DRAWINGS

[0019] The disclosed content of the utility model will be explained with reference to the drawings. It should be understood that the drawings are only for illustrative purposes, and are not intended to limit the protection scope of the utility model. In the drawings, the same reference signs are used to refer to the same parts. Among them:

[0020] Figure 1The top view structure of the solar photovoltaic module lead frame convenient for reversing according to an embodiment of the present application is shown schematically.

[0021] Figure 2 The top view structure of the solar photovoltaic module plastic packaging structure lead frame convenient for reversing according to an embodiment of the present application is shown schematically.

[0022] Figure 3 The top view structure of the solar photovoltaic module plastic packaging structure convenient for reversing according to an embodiment of the present application is shown schematically.

[0023] The figure mark: 1-plastic packaging body, 2-module unit, 21-positive electrode frame, 211-bonding area, 212-positive electrode mark, 22-negative electrode frame, 221-carrier island, 222-negative electrode mark, 3-tin storage groove, 4-combination through hole, 5-first connecting sheet, 6-second connecting sheet, 7-wire fixing sheet, 8-first connecting hole, 9-second connecting hole, 10-third connecting hole, 11-first connecting groove, 12-second connecting groove, 13-edge rib, 14-continuous rib, 15-positioning hole, 16-step hole. DETAILED DESCRIPTION

[0024] It is easy to understand that according to the technical scheme of the present application, a person skilled in the art can propose a plurality of structure modes and implementation modes which can be replaced with each other without changing the essential spirit of the present application. Therefore, the following specific embodiments and drawings are only exemplary description of the technical scheme of the present application, and should not be regarded as the whole or regarded as the limitation or restriction of the technical scheme of the present application.

[0025] Figure 1 The top view structure of the solar photovoltaic module lead frame convenient for reversing according to an embodiment of the present application is shown schematically, a high-strength solar photovoltaic module lead frame as shown in Figure 1 , comprising a frame body and a module unit 2, wherein the frame body constitutes the basic structure of the lead frame, and the module unit 2 serves as a functional component therein, and is fixed and arranged by the frame body.

[0026] Figure 2 The top view structure of the solar photovoltaic module plastic packaging structure lead frame convenient for reversing according to an embodiment of the present application is shown schematically, as shown in Figure 1 and Figure 2As shown, the aforementioned module unit 2 comprises a positive electrode frame 21 and a negative electrode frame 22, wherein the negative electrode frame 22 and the positive electrode frame 21 are oppositely arranged, the positive electrode frame 21 is provided with a bonding area 211 on the side close to the negative electrode frame 22, the negative electrode frame 22 is provided with a slide glass island 221 on the side close to the positive electrode frame 21, the bonding area 211 is provided with a matching port on the side close to the negative electrode frame 22, the slide glass island 221 is embedded in the matching port and there is a gap between the edge of the slide glass island 221 and the matching port to form a combined mode of cross-embedded combination of the bonding area 211 and the slide glass island 221. The frame body comprises a plurality of parallelly arranged side ribs 13, the number of the side ribs 13 is at least two, the module unit 2 is arranged between the side ribs 13, a plurality of positive electrode frames 21 are connected into a row by connecting ribs 14 and then connected between the aforementioned side ribs 13 by the connecting ribs 14, a plurality of negative electrode frames 22 are also connected into a row by connecting ribs 14 and then connected between the side ribs 13 by the connecting ribs 14, and the slide glass island 221 and the bonding area 211 are matched to combine the positive electrode frame 21 and the negative electrode frame 22 into one body.

[0027] The depth of the fitting mouth is not greater than the length of the bonding area 211, that is, the fitting mouth is only arranged on the bonding area 211, and the fitting mouth cannot separate the bonding area 211 into multiple blocks. The length of the slide film island 221 is less than the depth of the bonding area 211, and the sum of the width of the bonding area 211 and the slide film island 221 is less than the width of the lead frame. In some embodiments, the slide film island 221 is arranged at the middle position of the negative electrode frame 22, and the fitting mouth is correspondingly arranged at the middle position of the bonding area 211. By moving the negative electrode frame 22 and the positive electrode frame 21 close to each other, the slide film island 221 can be located in the fitting mouth, thereby completing the relative arrangement of the positive electrode frame 21 and the negative electrode frame 22. In other embodiments, the slide film island 221 is arranged based on the edge of the negative electrode frame 22, that is, the slide film island 221 is fixedly arranged at the left half edge or the right half edge of the negative electrode frame 22 facing the positive electrode frame 21, and the fitting mouth is correspondingly arranged at the left half edge or the right half edge of the bonding area 211. At this time, the length of the bonding area 211 and the slide film island 221 is the same, so that the gap between the bonding area 211 and the negative electrode frame 22 and the gap between the slide film island 221 and the positive electrode frame 21 have the same width during the cooperation of the bonding area 211 and the slide film island 221. The bonding area 211 and the slide film island 221 actually form a rotationally symmetrical cooperation connection mode, and the rotation center is located in the gap between the bonding area 211 and the slide film island 221, so that the slide film island 221 exactly supplements the missing part of the bonding area 211. Compared with the relative arrangement between the slide film island 221 and the bonding area 211, there is no intermediate transition area, and this arrangement can obviously improve the bonding strength of the module unit 2 after plastic packaging, thereby avoiding the bending and breaking of the module unit 2. The slide film island 221 and the bonding area 211 arranged in different positions can directly distinguish the positive electrode frame 21 and the negative electrode frame 22, without relying on the positive electrode mark 212 and the negative electrode mark 222 to distinguish the positive electrode frame 21 and the negative electrode frame 22.

[0028] A plurality of combination through holes 4 are vertically and equidistantly arranged between the bonding area 211 and the positive electrode frame 21, and a plurality of combination through holes 4 are vertically and equidistantly arranged between the slide film island 221 and the negative electrode frame 22. The combination through holes 4 are long holes, and the combination through holes 4 are used to connect the positive electrode frame 21 and the negative electrode frame 22 by the plastic package 1, thereby completing the plastic packaging of the bonding area 211 and the slide film island 221.

[0029] The positive electrode frame 21 and the negative electrode frame 22 are respectively marked with a positive electrode mark 212 and a negative electrode mark 222 on the front surface, which can help to quickly identify the positive electrode frame 21 and the negative electrode frame 22, and facilitate accurate installation by the installer. The positive electrode frame 21 is provided with a tin storage groove 3 between the through hole 4 and the positive electrode mark 212 on the front surface, and the negative electrode frame 22 is also provided with a tin storage groove 3 between the through hole 4 and the negative electrode mark 222 on the front surface. The tin storage groove 3 is a concave groove structure with a concave front surface and a convex back surface, which is processed by sinking operation.

[0030] The first connecting piece 5 is fixedly arranged on the side of the positive electrode frame 21 away from the negative electrode frame 22, and the second connecting piece 6 is fixedly arranged on the side of the negative electrode frame 22 away from the positive electrode frame 21. The width of the first connecting piece 5 and the second connecting piece 6 is smaller than the width of the module unit 2. The wire fixing piece 7 is fixedly connected to any one of the first connecting piece 5 and the second connecting piece 6. The wire fixing piece 7 can be connected to any one of the first connecting piece 5 or the second connecting piece 6, and can be bent into a C shape. The wire fixing piece 7 can clamp and fix the wire connected to the negative electrode frame 22, preventing the wire from being disconnected due to external force.

[0031] The first connecting hole 8 and the second connecting hole 9 are fixedly arranged at the top corner of the end of the negative electrode frame 22 away from the bonding area 211, and the third connecting hole 10 and the first connecting groove 11 are fixedly arranged at the top corner of the end of the positive electrode frame 21 away from the slide island 221. The second connecting groove 12 is arranged between the tin storage groove 3 and the bonding area 211, and between the tin storage groove 3 and the slide island 221. The first connecting hole 8, the second connecting hole 9 and the third connecting hole 10 have the same diameter, and the width of the first connecting groove 11 is the same as the diameter of the third connecting hole 10. The first connecting groove 11 is modified from the hole groove body with the same diameter as the first connecting hole 8, the second connecting hole 9 and the third connecting hole 10 arranged at the top corner of the lead frame, which plays the role of positioning and fixing. The lead frame does not need to be provided with a positioning groove for auxiliary positioning on the periphery, and does not need to use the orientation of the positioning groove to determine the direction of the lead frame. Only the orientation of the fixing clamp needs to be determined, which facilitates accurate installation by the installer.

[0032] A plurality of positioning holes 15 and step holes 16 are arranged on the length direction of the edge rib 13, which can accurately position the lead frame and drive the lead frame to accurately step.

[0033] In actual use, the lead frame is driven by the driving ribs 13 to move into the plastic encapsulation device, so that the plastic encapsulation body 1 is encapsulated on the outer part of the key area 211 and the carrier island 221 of the positive electrode frame 21 and the negative electrode frame 22. After the plastic encapsulation body 1 is formed (as shown in Figure 3 The driving ribs 13 drive the lead frame to move into the cutting device, and the connecting ribs 14 are cut to form a single solar photovoltaic module product.

[0034] Only the content in the above description is limited, and those skilled in the art can make various modifications and changes to the above embodiments without departing from the technical concept of the present application, and these modifications and changes should belong to the protection scope of the present application.

Claims

1. A high strength solar photovoltaic module lead frame, characterized by, The frame body and the module unit (2) are included, The module unit (2) includes a positive electrode frame (21) and a negative electrode frame (22), the negative electrode frame (22) and the positive electrode frame (21) are oppositely arranged, a bonding area (211) is arranged on the side of the positive electrode frame (21) close to the negative electrode frame (22), a slide glass island (221) is arranged on the side of the negative electrode frame (22) close to the positive electrode frame (21), a matching port is arranged on the side of the bonding area (211) close to the negative electrode frame (22), the slide glass island (221) is embedded in the matching port, and a gap is formed between the edge of the slide glass island (221) and the matching port. The frame body includes parallelly arranged side ribs (13), and the plurality of positive electrode frames (21) and negative electrode frames (22) are connected into a row by connecting ribs (14) and then connected between the parallelly arranged side ribs (13) by connecting ribs (14).

2. The high strength solar photovoltaic module lead frame of claim 1, wherein, The depth of the matching port is not greater than the length of the bonding area (211), the length of the slide glass island (221) is less than the depth of the bonding area (211), and the sum of the widths of the bonding area (211) and the slide glass island (221) is less than the width of the lead frame.

3. The high strength solar photovoltaic module lead frame of claim 1, wherein, A plurality of combination through holes (4) are vertically and equidistantly arranged between the bonding area (211) and the positive electrode frame (21), and a plurality of combination through holes (4) are vertically and equidistantly arranged between the slide glass island (221) and the negative electrode frame (22).

4. The high strength solar photovoltaic module lead frame of claim 3, wherein, Positive electrode marks (212) and negative electrode marks (222) are respectively engraved on the front surfaces of the positive electrode frame (21) and the negative electrode frame (22).

5. The high strength solar photovoltaic module lead frame of claim 4, wherein, Tin storage grooves (3) are arranged between the combination through holes (4) and the positive electrode marks (212) on the front surface of the positive electrode frame (21), and tin storage grooves (3) are also arranged between the combination through holes (4) and the negative electrode marks (222) on the front surface of the negative electrode frame (22).

6. The high strength solar photovoltaic module lead frame of claim 1, wherein, First connecting pieces (5) are fixedly arranged on the side of the positive electrode frame (21) away from the negative electrode frame (22), second connecting pieces (6) are fixedly arranged on the side of the negative electrode frame (22) away from the positive electrode frame (21), and lead wire fixing pieces (7) are fixedly connected with any one of the first connecting pieces (5) and the second connecting pieces (6).

7. The high strength solar photovoltaic module lead frame of claim 6, wherein, The widths of the first connecting pieces (5) and the second connecting pieces (6) are less than the width of the lead frame.

8. The high strength solar photovoltaic module lead frame of claim 1, wherein, First connecting holes (8) and second connecting holes (9) are fixedly arranged at the top corners of the end of the negative electrode frame (22) away from the bonding area (211), third connecting holes (10) and first connecting grooves (11) are fixedly arranged at the top corners of the end of the positive electrode frame (21) away from the slide glass island (221), and second connecting grooves (12) are arranged between the tin storage grooves (3) and the bonding area (211) and between the tin storage grooves (3) and the slide glass island (221).

9. The high strength solar photovoltaic module lead frame of claim 8, wherein, The first connecting holes (8), the second connecting holes (9), and the third connecting holes (10) have the same hole diameter, and the width of the first connecting grooves (11) is the same as the diameter of the third connecting holes (10).

10. The high strength solar photovoltaic module lead frame of claim 1, wherein, A plurality of positioning holes (15) and step holes (16) are formed in the length direction of the edge rib (13).

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