CN215731661U - Photovoltaic module diode with good heat dissipation performance - Google Patents
Photovoltaic module diode with good heat dissipation performance Download PDFInfo
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- CN215731661U CN215731661U CN202121379145.9U CN202121379145U CN215731661U CN 215731661 U CN215731661 U CN 215731661U CN 202121379145 U CN202121379145 U CN 202121379145U CN 215731661 U CN215731661 U CN 215731661U
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Abstract
The utility model aims to provide a photovoltaic module diode with good heat dissipation performance, which comprises an anode terminal, a cathode terminal, a diode chip and a packaging body; the positive terminal and the negative terminal are respectively composed of a terminal body in the middle, and wiring ends and chip ends which are positioned at two ends of the terminal body, and the chip end of the positive terminal, the chip end of the negative terminal and the diode chip are all packaged in the packaging body; through holes or gaps are formed in the chip end of the positive terminal and/or the chip end of the negative terminal, so that after the chip end of the positive terminal is in butt joint with the chip end of the negative terminal, a hollow structure is formed in the middle or the side; the packaging body is provided with a hollow part corresponding to the hollow structure. The structure of the packaging body of the photovoltaic module diode is improved, the raw material consumption of the packaging body is reduced, the heat dissipation performance of the packaging body is improved, the internal diode chip cannot lose efficacy due to overheating, and the packaging body has good practicability.
Description
Technical Field
The utility model belongs to the technical field of photovoltaics, and particularly relates to a photovoltaic module diode.
Background
The photovoltaic module diode is one of components commonly used in the photovoltaic field and comprises a positive terminal, a negative terminal, a diode chip and a packaging body; the positive terminal and the negative terminal are respectively composed of a terminal body in the middle, and wiring ends and chip ends which are positioned at two ends of the terminal body, the diode chip is fixed on the chip end of the positive terminal, the positive end of the diode chip is electrically connected with the chip end of the positive terminal, the negative end is electrically connected with the chip end of the negative terminal through a jumper wire, and the chip end of the positive terminal, the chip end of the negative terminal and the diode chip are all packaged in the packaging body; and the terminal bodies of the positive terminal and the negative terminal are provided with a bus bar through hole and a positioning through hole for the bus bar to pass through. As shown in fig. 2, in the conventional photovoltaic module diode, the chip end of the positive terminal (1) and the chip end of the negative terminal (2) form a complete flat plate structure, and correspondingly, as shown in fig. 1, the package (4) is almost a flat hexahedral structure, and the package (4) has no hollow portion, which may affect the heat dissipation of the package, and easily cause the internal chip to be overheated and fail in the working process.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a photovoltaic module diode with good heat dissipation performance.
The photovoltaic module diode with good heat dissipation performance comprises a positive terminal, a negative terminal, a diode chip and a packaging body; the positive terminal and the negative terminal are respectively composed of a terminal body in the middle, and wiring ends and chip ends which are positioned at two ends of the terminal body, the diode chip is fixed on the chip end of the positive terminal, the positive end of the diode chip is electrically connected with the chip end of the positive terminal, the negative end is electrically connected with the chip end of the negative terminal through a jumper wire, and the chip end of the positive terminal, the chip end of the negative terminal and the diode chip are all packaged in the packaging body; the key point is that a through hole or a gap is arranged at the chip end of the positive terminal and/or the chip end of the negative terminal, so that the middle part or the side part forms a hollow structure after the chip end of the positive terminal is butted with the chip end of the negative terminal; the packaging body is provided with a hollow part corresponding to the hollow structure.
Among the above-mentioned module diode for photovoltaic, the packaging body is equipped with fretwork portion, and no longer a flat hexahedron structure, so not only reduced the raw materials use amount of packaging body, the cost is reduced, and under the prerequisite that does not enlarge the external contour dimension of packaging body, the surface area of packaging body has been increased, heat radiating area has effectively been increased, when fixing this module diode for photovoltaic on photovoltaic cell board, irritate the thermal conductive adhesive to the packaging body, the thermal conductive adhesive can flow into fretwork portion department, conveniently conduct the heat to photovoltaic cell board and give off, further improve the heat dispersion of packaging body, thereby distribute away the heat that the inside of packaging body gathers fast, avoid inside diode chip to lose efficacy because of overheated in the course of the work.
Further, notches corresponding in position are formed in the centers of the chip end of the positive terminal and the end portion of the chip end of the negative terminal, so that the hollow-out structures are formed at the notches after the chip end of the positive terminal is in butt joint with the chip end of the negative terminal; the jumper is located on one side of the notch. The hollow part is arranged in the middle of the packaging body, so that the packaging body can keep enough structural strength, and meanwhile, the distance between the hollow part and the diode chip is short, so that the temperature of the diode chip is quickly reduced.
Furthermore, the area of the chip end of the positive terminal is larger than that of the chip end of the negative terminal, and the depth of the notch of the chip end of the positive terminal is larger than that of the chip end of the negative terminal, so that the chip end of the positive terminal is ensured to have a position large enough to fix the diode chip and the jumper wire, and meanwhile, the packaging body has a heat dissipation area large enough at the chip end corresponding to the positive terminal.
Furthermore, the terminal bodies of the positive terminal and the negative terminal are provided with bus bar through holes for bus bars to pass through so as to conveniently install the bus bars.
Furthermore, the terminal bodies of the positive terminal and the negative terminal are provided with positioning through holes so as to be convenient for positioning the module diode when the module diode is installed.
Furthermore, flanges are arranged on two sides of the terminal body of the positive terminal and the terminal body of the negative terminal, and at least part of the flanges extend to the side of the bus bar through hole. In above-mentioned module diode, because at the positive terminal, the both sides of the terminal body of negative terminal all are equipped with the turn-ups, above-mentioned turn-ups is under the prerequisite that does not change the whole width of module diode, heat radiating area has been increased, can be when the welding busbar and the rapid dispersion heat of normal during operation, avoid causing diode chip department heat to concentrate and the high temperature, thereby improve the reliability of work, and still be favorable to improving the structural strength of busbar through-hole department, therefore, adopt above-mentioned module diode, under the condition of terminal box equidimension, the terminal box of its adaptation can have bigger electric current, and then reduce cost.
Furthermore, the lateral part of the terminal body with only one terminal in the positive terminal and the negative terminal is provided with a fool-proof notch, the fool-proof notch corresponds to bits of the base of the junction box, and the diode can be assembled in the junction box only by placing the diode in the correct direction, so that the situation that the diode is reversely mounted can be avoided.
Further, positioning hole's top is equipped with the annular glue storage tank that is formed by the chamfer structure, stretches into positioning hole department and hot melt back with the hot melt post on the base, and the top of hot melt post meets with positioning hole's position is horn mouth column structure, has increased the diameter of this position to can avoid appearing stress concentration's problem through the inclined plane, thereby improve the stability of this department structure, prevent to lead to the diode to drop because of this department fracture.
The structure of the packaging body of the photovoltaic module diode is improved, the raw material consumption of the packaging body is reduced, the heat dissipation performance of the packaging body is improved, the internal diode chip cannot lose efficacy due to overheating, and the packaging body has good practicability.
Drawings
Fig. 1 is a schematic structural diagram of a conventional photovoltaic module diode.
Fig. 2 is a schematic structural view of a conventional photovoltaic module diode (with the encapsulant removed).
Fig. 3 is a schematic structural view of a photovoltaic module diode according to the present invention.
Fig. 4 is a schematic structural view of the photovoltaic module diode of the present invention (with the encapsulant removed).
Fig. 5 is a schematic view (cross-sectional view) of the fitting structure between the module diode and the heat-fusible column of the present invention.
The figures are numbered: 1. a positive terminal; 2. a negative terminal; 3. a diode chip; 4. a package body; 5. a jumper wire; 6. a bus bar through hole; 7. positioning the through hole; 8. a notch; 9. a hollow-out section; 10. flanging; 11. a fool-proof notch; 12. an annular glue storage tank; 13. hot melting the column; 14. the top end of the hot melting column is connected with the positioning through hole.
Detailed Description
The following describes embodiments of the present invention, such as shapes and structures of respective members, mutual positions and connection relationships between respective portions, and actions and operation principles of the respective portions, in further detail, with reference to the accompanying drawings.
Example 1:
the embodiment provides a photovoltaic module diode with good heat dissipation performance.
As shown in fig. 3 and 4, the photovoltaic module diode with good heat dissipation performance of the present embodiment includes a positive terminal 1, a negative terminal 2, a diode chip 3, and a package 4; the positive terminal 1 and the negative terminal 2 are both composed of a terminal body in the middle, and wiring ends and chip ends which are positioned at two ends of the terminal body, the diode chip 3 is fixed on the chip end of the positive terminal 1, the positive end of the diode chip 3 is electrically connected with the chip end of the positive terminal 1, the negative end is electrically connected with the chip end of the negative terminal 2 through a jumper wire, the chip end of the positive terminal 1, the chip end of the negative terminal 2 and the diode chip 3 are all packaged in the packaging body 4, and the terminal bodies of the positive terminal 1 and the negative terminal 2 are provided with a bus bar through hole 6 and a positioning through hole 7 for a bus bar to pass through; the key point is that the centers of the chip end of the positive terminal 1 and the chip end of the negative terminal 2 are provided with U-shaped notches 8 corresponding in position, so that after the chip end of the positive terminal 1 is in butt joint with the chip end of the negative terminal 2, the notches 8 form a hollow structure, and the jumper 5 is positioned on one side of the notches 8; and a hollow part 9 corresponding to the hollow structure is arranged in the middle of the packaging body 4.
In this embodiment, the area of the chip end of the positive terminal 1 is larger than the area of the chip end of the negative terminal 2, and the depth of the notch 8 of the chip end of the positive terminal 1 is larger than the depth of the notch 8 of the chip end of the negative terminal 2, so as to ensure that the chip end of the positive terminal 1 has a sufficiently large position to fix the diode chip 3 and the jumper 5, and simultaneously, the package 4 has a sufficiently large heat dissipation area at the chip end corresponding to the positive terminal 1.
Among the above-mentioned module diode for photovoltaic, packaging body 4 is equipped with fretwork portion 9, and no longer a flat hexahedron structure, so not only reduced packaging body 4's raw materials use amount, the cost is reduced, and under the prerequisite that does not enlarge packaging body 4 outline size, packaging body 4's surface area has been increased, the heat radiating area has effectively been increased, when fixing this module diode for photovoltaic on photovoltaic cell board, irritate heat-conducting glue to packaging body 4, heat-conducting glue can flow into fretwork portion 9 department, conveniently conduct the heat to photovoltaic cell board and give off, further improve packaging body 4's heat dispersion, thereby distribute away the heat that packaging body 4 inside gathered fast, avoid inside diode chip 3 to lose efficacy because of overheated in the course of the work.
In this embodiment, two sides of the terminal body of the positive terminal 1 and the negative terminal 2 are respectively provided with a flange 10, and the flanges 10 are perpendicular to the terminal body and at least partially extend to the side of the bus bar through hole 6.
The side portion of the terminal body having only one of the positive terminal 1 and the negative terminal 2 is provided with the fool-proof notch 11, in this embodiment, only two sides of the terminal body of the positive terminal 1 are provided with the fool-proof notches 11, and the corresponding position of the terminal body of the negative terminal 2 is not provided with the fool-proof notch 11. The fool-proof notch 11 of the positive terminal 1 corresponds to bits of the base of the junction box, and the junction box can be assembled only by placing the direction of the diode correctly, so that the situation that the diode is reversely arranged can be avoided.
Positioning hole 7's top is equipped with the annular glue storage tank 12 that is formed by the chamfer structure, as shown in fig. 5, stretch into positioning hole 7 department and hot melt back with hot melt post 13 on the base, the top of hot melt post 13 is the horn mouth column structure with position 14 that positioning hole 7 meets, has increased the diameter in this position to can avoid appearing stress concentration's problem through the inclined plane, thereby improve the stability of this department structure, prevent to lead to the diode to drop because of this department fracture.
In above-mentioned module diode, because at positive terminal 1, the both sides of the terminal body of negative terminal 2 all are equipped with turn-ups 10, above-mentioned turn-ups 10 is under the prerequisite that does not change the whole width of module diode, heat radiating area has been increased, can be when the welding busbar and the rapid dispersion heat of normal during operation, avoid causing diode chip department heat to concentrate and the high temperature, thereby improve the reliability of work, and still be favorable to improving the structural strength of busbar through-hole 6 department, therefore, adopt above-mentioned module diode, under the condition of terminal box equidimension, the terminal box of its adaptation can have bigger electric current, and then reduce cost.
Claims (7)
1. A photovoltaic module diode with good heat dissipation performance comprises a positive terminal, a negative terminal, a diode chip and a packaging body; the positive terminal and the negative terminal are respectively composed of a terminal body in the middle, and wiring ends and chip ends which are positioned at two ends of the terminal body, the diode chip is fixed on the chip end of the positive terminal, the positive end of the diode chip is electrically connected with the chip end of the positive terminal, the negative end is electrically connected with the chip end of the negative terminal through a jumper wire, and the chip end of the positive terminal, the chip end of the negative terminal and the diode chip are all packaged in the packaging body; the structure is characterized in that a through hole or a notch is formed in the chip end of the positive terminal and/or the chip end of the negative terminal, so that after the chip end of the positive terminal is in butt joint with the chip end of the negative terminal, a hollow structure is formed in the middle or the side; the packaging body is provided with a hollow part corresponding to the hollow structure.
2. The photovoltaic module diode as claimed in claim 1, wherein the center of the chip end of the positive terminal and the center of the chip end of the negative terminal are provided with notches corresponding to each other, so that the notches form the hollow-out structures after the chip end of the positive terminal and the chip end of the negative terminal are connected; the jumper is located on one side of the notch.
3. The photovoltaic module diode according to claim 2, wherein an area of the chip end of the positive terminal is larger than an area of the chip end of the negative terminal, and a depth of a notch of the chip end of the positive terminal is larger than a depth of a notch of the chip end of the negative terminal.
4. The photovoltaic module diode according to claim 1, 2 or 3, wherein the terminal body of the positive and negative terminals has a bus bar through hole for passing a bus bar.
5. The photovoltaic module diode according to claim 1, 2 or 3, wherein the positive terminal and the negative terminal have positioning through holes in their terminal bodies.
6. The photovoltaic module diode as claimed in claim 1, 2 or 3, wherein the positive terminal and the negative terminal have flanges on both sides of the terminal body, and at least a portion of the flanges extends to the side of the bus bar through hole.
7. The photovoltaic module diode according to claim 1, 2 or 3, wherein a fool-proof notch is formed in a side portion of the terminal body of only one of the positive terminal and the negative terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121379145.9U CN215731661U (en) | 2021-06-21 | 2021-06-21 | Photovoltaic module diode with good heat dissipation performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121379145.9U CN215731661U (en) | 2021-06-21 | 2021-06-21 | Photovoltaic module diode with good heat dissipation performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215731661U true CN215731661U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121379145.9U Active CN215731661U (en) | 2021-06-21 | 2021-06-21 | Photovoltaic module diode with good heat dissipation performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215731661U (en) |
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2021
- 2021-06-21 CN CN202121379145.9U patent/CN215731661U/en active Active
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