Structure for improving fracture of solar cell welding FPC (Flexible Printed Circuit)
By dividing the electrode trace of the FPC into two wires and setting up short-connected connection lines, the welding fracture problem of solar cell FPC is solved, ensuring the stability and normal use of the connection.
Patent Information
- Application Number
- CN202420690334.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-04-03
AI Technical Summary
The connection between the FPC welding gold fingers of existing solar cells and the internal metal copper wires is prone to break, resulting in the solar cells being unable to use normally.
By dividing the positive electrode trace and the negative electrode trace on the FPC into two wires, and setting up multiple short connection lines to avoid interference, widening the trace width so that it is consistent with the width of the soldered gold finger, ensuring stable connection.
It effectively avoids the fracture at the connection between the FPC and the welding end, and ensures the normal use of solar cells.
Smart Images
Figure CN222366424U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of solar cells, in particular to an improved FPC fracture structure for solar cell welding. Background Art
[0002] Solar photovoltaic cells are widely used in various fields of life. Solar photovoltaic cells are a type of battery that is laminated into a solar cell, can generate electricity using solar radiation, and has related current lead-out devices and cables.
[0003] Solar cells in the prior art mainly include a transparent glass substrate and a photovoltaic power generation layer plated on the glass substrate. The photovoltaic power generation layer enables the solar photovoltaic cell to absorb solar energy and convert it into electrical energy for use. An FPC is provided on the solar photovoltaic cell to connect the positive and negative electrodes of the solar photovoltaic glass to the corresponding terminal products, so that the electrical energy converted by the solar photovoltaic cell can be supplied to the application products. Since the FPC is connected to the terminal by welding gold fingers, in actual applications, the connection between the FPC welding gold fingers and the metal copper wire inside the FPC may break, resulting in the solar cell being unable to be used normally. Utility Model Content
[0004] The utility model aims to overcome the shortcomings of the prior art and provide an improved solar cell welding FPC fracture structure.
[0005] The purpose of this utility model is achieved through the following technical solutions:
[0006] A method for improving the fracture structure of FPC welding of a solar cell comprises: a solar cell body, a FPC bound to one side of the solar cell body, two electrode traces arranged on the FPC, both of the two electrode traces consisting of two wires, one end of the FPC connected to the solar cell body, and the other end of the FPC provided with a welding end for connecting to a terminal, the welding end and the connection portion of the FPC being the same size.
[0007] In one embodiment, two electrode pins are provided on one side of the solar cell body, the two electrode pins are respectively a positive electrode pin and a negative electrode pin, and the FPC is respectively connected to the positive electrode pin and the negative electrode pin.
[0008] In one embodiment, the two electrode traces are respectively an FPC positive electrode trace and an FPC negative electrode trace, and the FPC positive electrode trace and the FPC negative electrode trace are respectively connected to the positive electrode pin and the negative electrode pin.
[0009] In one embodiment, the spacing between the FPC positive electrode trace and the FPC negative electrode trace is 0.3 mm.
[0010] In one embodiment, the FPC positive electrode wiring consists of a first positive electrode wire and a second positive electrode wire, and the first positive electrode wire and the second positive electrode wire are connected at intervals.
[0011] In one embodiment, the FPC negative electrode wiring consists of a first negative electrode wire and a second negative electrode wire, and the first negative electrode wire and the second negative electrode wire are connected at intervals.
[0012] In one embodiment, a connecting wire for short-circuiting is provided between the first positive electrode wire and the second positive electrode wire, and there are multiple connecting wires, which are evenly distributed along the length direction of the first positive electrode wire and the second positive electrode wire.
[0013] In one embodiment, a plurality of connecting wires are also provided between the first negative electrode wire and the second negative electrode wire, and the plurality of connecting wires are distributed equidistantly along the length direction of the first negative electrode wire and the second negative electrode wire.
[0014] In one embodiment, the distance between two adjacent connecting wires on the first positive electrode wire and the second positive electrode wire is 10 mm, and the distance between two adjacent connecting wires on the first negative electrode wire and the second negative electrode wire is also 10 mm.
[0015] In one embodiment, a positive welding gold finger and a negative welding gold finger are provided on the welding end, and the positive welding gold finger and the negative welding gold finger are respectively connected to the FPC positive electrode trace and the FPC negative electrode trace, and the width of the FPC positive electrode trace is consistent with the width of the positive welding gold finger, and the width of the FPC negative electrode trace is consistent with the width of the negative welding gold finger.
[0016] Compared with the prior art, the utility model has at least the following advantages:
[0017] The utility model provides an improved solar cell welding FPC fracture structure by dividing the FPC positive electrode trace and the FPC negative electrode trace on the FPC into two wires respectively to widen the width of the FPC positive electrode trace and the FPC negative electrode trace, so that the FPC positive electrode trace and the FPC negative electrode trace are consistent in width with the welding gold finger corresponding to the welding end, so as to avoid the fracture phenomenon at the connection, and ensure the normal use of the solar cell body. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.
[0019] Figure 1 A schematic diagram of a structure for improving the fracture structure of FPC welding of solar cells provided by the utility model;
[0020] Figure 2 A schematic diagram of the structure of a solar cell body in an improved FPC fracture structure for solar cell welding provided by the utility model;
[0021] Figure 3 for Figure 1 Enlarged schematic diagram of part A.
[0022] Description of the drawings: 10. Solar cell body; 11. Positive electrode pin; 12. Negative electrode pin; 20. FPC; 21. FPC positive electrode wiring; 211. First positive electrode wire; 212. Second positive electrode wire; 22. FPC negative electrode wiring; 221. First negative electrode wire; 222. Second negative electrode wire; 30. Connecting wire; 40. Welding end; 41. Positive welding gold finger; 42. Negative welding gold finger. DETAILED DESCRIPTION
[0023] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.
[0024] A method for improving the fracture structure of FPC welding of solar cells, referring to Figure 1 , including a solar cell body 10, the solar cell body 10 includes a substrate and a PV photovoltaic power generation film layer coated on one side of the substrate, the PV photovoltaic power generation film layer can absorb solar energy and convert it into electrical energy for use.
[0025] Reference Figure 2 Two electrode pins are provided on one side of the solar cell body 10 , the two electrode pins are respectively a positive electrode pin 11 and a negative electrode pin 12 , and the two electrode pins are used for conducting signals inside the solar cell body 10 .
[0026] Reference Figure 1 and Figure 3, an FPC 20 is bound to one side of the solar cell body 10, one end of the FPC 20 is bound to two electrode pins, and is connected to the positive electrode pin 11 and the negative electrode pin 12 of the solar cell body 10 through the FPC 20 to ensure the normal use of the solar cell body 10. Two electrode traces are provided on the FPC 20 for connecting to the two electrode pins respectively, and the two electrode traces are composed of two wires, and the two electrode traces are respectively an FPC positive electrode trace 21 and an FPC negative electrode trace 22, and the FPC positive electrode trace 21 and the FPC negative electrode trace 22 are respectively connected to the positive electrode pin 11 and the negative electrode pin 12 of the solar cell body 10.
[0027] Further, refer to Figure 1 and Figure 3 The FPC positive electrode trace 21 and the FPC negative electrode trace 22 are arranged at a certain distance from each other, and the distance between the FPC positive electrode trace 21 and the FPC negative electrode trace 22 is 0.3 mm.
[0028] Reference Figure 1 and Figure 3 The FPC positive electrode wiring 21 is composed of a first positive electrode wire 211 and a second positive electrode wire 212, and the first positive electrode wire 211 and the second positive electrode wire 212 are arranged at a certain distance. The FPC negative electrode wiring 22 is composed of a first negative electrode wire 221 and a second negative electrode wire 222, and the first negative electrode wire 221 and the second negative electrode wire 222 are arranged at a certain distance. The first positive electrode wire 211 and the second positive electrode wire 212 are connected at intervals, and a connecting wire 30 connecting the first positive electrode wire 211 and the second positive electrode wire 212 is arranged between the first positive electrode wire 211 and the second positive electrode wire 212. There are multiple connecting wires 30, and the multiple connecting wires 30 are equidistantly distributed along the length direction of the first positive electrode wire 211 and the second positive electrode wire 212. The first positive electrode wire 211 and the second positive electrode wire 212 are short-circuited together by the connecting wire 30 to avoid interference between the two. The first negative electrode wire 221 and the second negative electrode wire 222 are connected to each other at intervals. A plurality of connecting wires 30 are also arranged between the first negative electrode wire 221 and the second negative electrode wire 222 . The plurality of connecting wires 30 are equidistantly distributed along the length direction of the first negative electrode wire 221 and the second negative electrode wire 222 .
[0029] Reference Figure 1 and Figure 3The spacing between two adjacent connecting wires 30 on the first positive electrode wire 211 and the second positive electrode wire 212 is 10 mm, and the spacing between two adjacent connecting wires 30 on the first negative electrode wire 221 and the second negative electrode wire 222 is also 10 mm. The first positive electrode wire 211 and the second negative electrode wire 222 are short-circuited by the connecting wire 30, and the first negative electrode wire 221 and the second negative electrode wire 222 are short-circuited to avoid interference in the FPC positive electrode wiring 21 and the FPC negative electrode wiring 22.
[0030] Further, refer to Figure 1 and Figure 3 One end of the FPC 20 is connected to the solar cell body 10, and the other end of the FPC 20 is provided with a welding end 40 for welding with the terminal, and a positive welding gold finger 41 and a negative welding gold finger 42 are provided on the welding end 40, and the positive welding gold finger 41 and the negative welding gold finger 42 are respectively connected to the FPC positive electrode trace 21 and the FPC negative electrode trace 22. The welding end 40 of the FPC 20 is the same size as the connection between the FPC positive electrode trace 21 and the FPC negative electrode trace 22 of the FPC 20, the width of the FPC positive electrode trace 21 is consistent with the width of the positive welding gold finger 41, and the width of the FPC negative electrode trace 22 is consistent with the width of the negative welding gold finger 42, so as to avoid the phenomenon of the connection between the welding end 40 and the FPC 20 being broken.
[0031] Reference Figure 1 and Figure 3 By dividing the FPC positive electrode trace 21 and the FPC negative electrode trace 22 on the FPC 20 into two wires respectively, the width of the FPC positive electrode trace 21 and the FPC negative electrode trace 22 is widened, so that the width of the welding gold fingers corresponding to the FPC positive electrode trace 21 and the FPC negative electrode trace 22 and the welding end 40 are consistent, so as to avoid the phenomenon of breakage at the connection, thereby ensuring the normal use of the solar cell body 10.
[0032] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A method for improving the fracture structure of FPC welding of solar cells, characterized in that: include: A solar cell body (10), one side of the solar cell body (10) is bound with an FPC (20), the FPC (20) is provided with two electrode traces, both of the two electrode traces are composed of two wires, one end of the FPC (20) is connected to the solar cell body (10), the other end of the FPC (20) is provided with a welding end (40) for connecting to a terminal, and the welding end (40) and the FPC (20) have the same size at the connection point.
2. The improved solar cell welding FPC fracture structure according to claim 1, characterized in that: Two electrode pins are arranged on one side of the solar cell body (10), the two electrode pins are respectively a positive electrode pin (11) and a negative electrode pin (12), and the FPC (20) is respectively connected to the positive electrode pin (11) and the negative electrode pin (12).
3. The improved solar cell welding FPC fracture structure according to claim 2, characterized in that: The two electrode traces are respectively an FPC positive electrode trace (21) and an FPC negative electrode trace (22), and the FPC positive electrode trace (21) and the FPC negative electrode trace (22) are respectively connected to the positive electrode pin (11) and the negative electrode pin (12).
4. The improved solar cell welding FPC fracture structure according to claim 3, characterized in that: The spacing between the FPC positive electrode wiring (21) and the FPC negative electrode wiring (22) is 0.3 mm.
5. The improved solar cell welding FPC fracture structure according to claim 3, characterized in that: The FPC positive electrode wiring (21) is composed of a first positive electrode wire (211) and a second positive electrode wire (212), and the first positive electrode wire (211) and the second positive electrode wire (212) are connected at intervals.
6. The improved solar cell welding FPC fracture structure according to claim 5, characterized in that: The FPC negative electrode wiring (22) consists of a first negative electrode wire (221) and a second negative electrode wire (222), and the first negative electrode wire (221) and the second negative electrode wire (222) are connected at an interval.
7. The improved solar cell welding FPC fracture structure according to claim 6, characterized in that: A connecting wire (30) for short-circuiting is provided between the first positive electrode wire (211) and the second positive electrode wire (212), and there are a plurality of connecting wires (30), which are distributed at equal distances along the length direction of the first positive electrode wire (211) and the second positive electrode wire (212).
8. The improved solar cell welding FPC fracture structure according to claim 7, characterized in that: A plurality of connecting wires (30) are also arranged between the first negative electrode wire (221) and the second negative electrode wire (222), and the plurality of connecting wires (30) are distributed at equal distances along the length direction of the first negative electrode wire (221) and the second negative electrode wire (222).
9. The improved solar cell welding FPC fracture structure according to claim 8, characterized in that: The spacing between two adjacent connecting wires (30) on the first positive electrode wire (211) and the second positive electrode wire (212) is 10 mm, and the spacing between two adjacent connecting wires (30) on the first negative electrode wire (221) and the second negative electrode wire (222) is also 10 mm.
10. The improved solar cell welding FPC fracture structure according to claim 9, characterized in that: The welding end (40) is provided with a positive welding gold finger (41) and a negative welding gold finger (42); the positive welding gold finger (41) and the negative welding gold finger (42) are respectively connected to the FPC positive electrode trace (21) and the FPC negative electrode trace (22); the width of the FPC positive electrode trace (21) is consistent with the width of the positive welding gold finger (41); the width of the FPC negative electrode trace (22) is consistent with the width of the negative welding gold finger (42).