A photovoltaic protection power device module with a folded edge forming stable structure

Abstract

The utility model discloses a photovoltaic protection power device module with a folded edge forming stable structure, including a conductive copper sheet 1, a copper sheet 1 packaging area is arranged at one end of the conductive copper sheet 1, a copper sheet 2 packaging area is arranged at one end of the conductive copper sheet 2, a heat dissipation gap is provided between the copper sheet 2 packaging area and the copper sheet 1 packaging area, one end of the jumper is conductively welded to the copper sheet 1 packaging area, and the other end is conductively welded to the chip, the chip is arranged on the copper sheet 2 packaging area, and the copper sheet 1 packaging area, the copper sheet 2 packaging area and the jumper are encapsulated and fixed inside the epoxy plastic encapsulation body, wherein the conductive copper sheet 1 and the conductive copper sheet 2 are respectively provided with assembly holes, and a folded edge portion is provided on one side of the assembly hole close to the epoxy plastic encapsulation body. By adopting this technical solution, the heat conduction path and heat dissipation area of ​​the copper sheet 1 packaging area and the copper sheet 2 packaging area can be increased, so that the heat dissipation surface area of ​​the power diode module can be increased when working, the heat dissipation effect can be enhanced, and the junction temperature capacity and thermal escape capacity can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of diode module structures, in particular to a photovoltaic protection power device module with a folded edge forming stable structure. Background Art

[0002] Solar photovoltaic modules are devices that convert solar energy into electrical energy. In photovoltaic power generation systems, junction boxes play an important role. They are mainly used to output the current generated by each photovoltaic module and converge it to the system control box. In addition, the junction box also protects the solar photovoltaic modules. The junction box is generally equipped with a power diode module, which is connected to the battery string in the photovoltaic module. When there is a cell damage in the battery string or a hot spot effect caused by light blocking, the faulty battery string can be separated from the photovoltaic system to avoid its adverse effect on the entire photovoltaic system.

[0003] In the power diode module, a gap distance is maintained between two copper sheets, and the two copper sheets are conductively welded through a jumper wire. Finally, the jumper wire and the welding ends thereof are fixed by epoxy packaging, thereby forming a modular structure of the power diode. In the prior art, the epoxy plastic package between the two copper sheets usually adopts a regular rectangular package, which easily leads to insufficient heat dissipation surface area of ​​the jumper wire and the welding ends thereof with the two copper sheets, resulting in poor heat dissipation effect of the power diode module product. In addition, when the two ends of the copper sheet are subjected to external pressure, it is easy to cause damage to the body, leading to problems such as product failure. Utility Model Content

[0004] The utility model aims to provide a photovoltaic protection power device module with a folding forming stable structure, which is used to solve the problem that the rectangular epoxy plastic package in the prior art causes the power diode module product to have poor heat dissipation effect and the body to be easily damaged.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A photovoltaic protection power device module with a folded edge forming stable structure, comprising:

[0007] A conductive copper sheet 1, one end of which is provided with a copper sheet 1 packaging area;

[0008] A second conductive copper sheet, one end of which is provided with a second copper sheet packaging area, and a heat dissipation gap is provided between the second copper sheet packaging area and the first copper sheet packaging area;

[0009] A jumper wire, one end of which is conductively welded to the copper sheet first packaging area, and the other end of which is conductively welded to a chip, wherein the chip is arranged on the copper sheet second packaging area;

[0010] An epoxy plastic encapsulation body, which internally encapsulates and fixes the copper sheet first encapsulation area, the copper sheet second encapsulation area and the jumper;

[0011] Wherein, the conductive copper sheet 1 and the conductive copper sheet 2 are respectively provided with assembly holes, and a folded edge portion is provided on one side end of the assembly hole close to the epoxy plastic sealing body.

[0012] As a further solution of the utility model: the folded edge portions are respectively and integrally structured to vertically connect the conductive copper sheet 1 and the conductive copper sheet 2.

[0013] As a further solution of the utility model: sawtooth strip 1 is respectively arranged on the two side surfaces of the packaging area of ​​the copper sheet 1; and sawtooth strip 2 is respectively arranged on the two side surfaces of the packaging area of ​​the copper sheet 2.

[0014] As a further solution of the utility model: the jumper is a U-shaped conductive sheet, a bent ear end on one side of the U-shaped conductive sheet is welded to the sawtooth strip on one side surface, and a bent ear end on the other side is welded to the chip.

[0015] As a further solution of the utility model: at least four copper sheet one through holes are arranged between the two side surfaces of the copper sheet one packaging area; at least three copper sheet two through holes are arranged between the two side surfaces of the copper sheet two packaging area.

[0016] As a further solution of the utility model: the conductive copper sheet 1 and the conductive copper sheet 2 are respectively provided with tin block welding areas.

[0017] As a further solution of the utility model: the conductive copper sheet 1 and the conductive copper sheet 2 are respectively provided with positioning holes; the conductive copper sheet 1 or the conductive copper sheet 2 is provided with an anti-reverse positioning opening.

[0018] The beneficial effects of the utility model are as follows: the conductive copper sheet one and the conductive copper sheet two are encapsulated and fixed by the epoxy plastic encapsulation body, so that the copper sheet one encapsulation area, the copper sheet two encapsulation area and the jumper are encapsulated and fixed inside the epoxy plastic encapsulation body; and by arranging a folded edge portion at one side edge end of the assembly hole close to the epoxy plastic encapsulation body, the heat conduction path and the heat dissipation area of ​​the copper sheet one encapsulation area and the copper sheet two encapsulation area can be increased, thereby increasing the heat dissipation surface area of ​​the power diode module when working, enhancing the heat dissipation effect, and improving the junction temperature capacity and thermal escape capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a side structural schematic diagram of the utility model;

[0021] Figure 2 It is another lateral structural schematic diagram of the utility model;

[0022] Figure 3 The utility model is a schematic diagram of a structure in which a first conductive copper sheet and a second conductive copper sheet are connected via a jumper wire.

[0023] In the figure: 1. Conductive copper sheet 1; 10. Copper sheet 1 packaging area; 100. Sawtooth strip 1; 101. Copper sheet 1 through hole; 2. Conductive copper sheet 2; 20. Copper sheet 2 packaging area; 200. Sawtooth strip 2; 201. Copper sheet 2 through hole; 3. Epoxy plastic package; 4. Jumper wire; 5. Chip; 6. Assembly hole; 60. Folded edge; 7. Tin block welding area; 8. Positioning hole; 9. Anti-reverse positioning port. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; in the description of the present invention, "multiple" and "several" mean at least two, for example two, three, etc., unless otherwise clearly and specifically defined.

[0026] See also Figures 1 to 3 As shown, the utility model is a photovoltaic protection power device module with a folded edge forming stable structure, comprising a conductive copper sheet 1, a conductive copper sheet 2, a jumper 4 and an epoxy plastic package body 3, wherein a copper sheet 1 packaging area 10 is provided at one end of the conductive copper sheet 1, a copper sheet 2 packaging area 20 is provided at one end of the conductive copper sheet 2, a heat dissipation gap is provided between the copper sheet 2 packaging area 20 and the copper sheet 1 packaging area 10, one end of the jumper 4 is conductively welded to the copper sheet 1 packaging area 10, and the other end is conductively welded to a chip 5, the chip 5 is arranged on the copper sheet 2 packaging area 20, and the copper sheet 1 packaging area 10, the copper sheet 2 packaging area 20 and the jumper 4 are encapsulated and fixed inside the epoxy plastic package body 3, wherein the conductive copper sheet 1 and the conductive copper sheet 2 are respectively provided with assembly holes 6, and a folded edge portion 60 is provided at one side end of the assembly hole 6 close to the epoxy plastic package body 3.

[0027] In the power diode module structure containing a folded-edge conductive structure of the present application, the conductive copper sheet 1 and the conductive copper sheet 2 are encapsulated and fixed by an epoxy plastic encapsulation body 3, so that the copper sheet 1 encapsulation area 10, the copper sheet 2 encapsulation area 20 and the jumper 4 are encapsulated and fixed inside the epoxy plastic encapsulation body 3. By setting a folded-edge portion 60 at one side edge of the assembly hole 6 close to the epoxy plastic encapsulation body 3, the thermal conduction path and heat dissipation area of ​​the copper sheet 1 encapsulation area 10 and the copper sheet 2 encapsulation area 20 can be increased, thereby increasing the heat dissipation surface area of ​​the power diode module when it is working, enhancing the heat dissipation effect, and improving the junction temperature capacity and thermal escape capacity.

[0028] In this specific embodiment, the folded edge portions 60 are respectively integrated into a vertical structure to connect the conductive copper sheet 1 and the conductive copper sheet 2 2. During the punching and assembly hole 6, it is convenient to bend the punched portions of the conductive copper sheet 1 and the conductive copper sheet 2 2 close to the epoxy plastic packaging body 3 to facilitate the production of the folded edge portion 60.

[0029] In this specific embodiment, sawtooth strips 100 are respectively provided on both side surfaces of the copper sheet 1 packaging area 10; sawtooth strips 200 are respectively provided on both side surfaces of the copper sheet 2 packaging area 20; the jumper 4 is a U-shaped conductive sheet, and the bent ear end on one side of the U-shaped conductive sheet is welded and connected to the sawtooth strip 100 on one side surface, and the bent ear end on the other side is welded and connected to the chip 5; the welding contact area of ​​the jumper 4 can be increased, and the sawtooth strips 100 and 200 can increase the contact area with the epoxy plastic package 3, so that the molding of the epoxy plastic package 3 is stable, ensuring the molding quality of the power diode module.

[0030] In this specific embodiment, at least four copper sheet through holes 101 are arranged between the two side surfaces of the copper sheet packaging area 10; at least three copper sheet through holes 201 are arranged between the two side surfaces of the copper sheet packaging area 20, so that the epoxy plastic sealing body 3 arranged on the two side surfaces of the copper sheet packaging area 10 and the copper sheet packaging area 20 can be penetrated and fixed; the through holes strengthen the bonding strength between the epoxy plastic sealing body 3 and the copper guide sheet by locking glue, thereby enhancing the bonding stability, thereby offsetting the pressure of the copper sheets on both sides and better protecting the main body; at the same time, it can increase the penetration ability of the curing glue during the molding of the epoxy plastic sealing body 3, and improve the appearance of the plastic sealing body such as bubbles, missing corners, incomplete filling and other undesirable problems.

[0031] In this specific implementation manner, a tin block welding area 7 is respectively provided on the conductive copper sheet 1 and the conductive copper sheet 2 2 .

[0032] In this specific implementation manner, a positioning hole 8 is provided on each of the conductive copper sheet 1 and the conductive copper sheet 2 2 ; and an anti-reverse positioning opening 9 is provided on the conductive copper sheet 1 or the conductive copper sheet 2 2 .

[0033] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A photovoltaic protection power device module with a folded edge forming stable structure, characterized in that: include: A conductive copper sheet (1), one end of which is provided with a copper sheet packaging area (10); A second conductive copper sheet (2), one end of which is provided with a second copper sheet packaging area (20), and a heat dissipation gap is provided between the second copper sheet packaging area (20) and the first copper sheet packaging area (10); A jumper wire (4), one end of which is conductively welded to the copper sheet first packaging area (10), and the other end of which is conductively welded to a chip (5), wherein the chip (5) is arranged on the copper sheet second packaging area (20); An epoxy plastic encapsulation body (3), the copper sheet first encapsulation area (10), the copper sheet second encapsulation area (20) and the jumper wire (4) being encapsulated and fixed therein; Wherein, the conductive copper sheet 1 (1) and the conductive copper sheet 2 (2) are each provided with an assembly hole (6), and a folded edge portion (60) is provided at one side end of the assembly hole (6) close to the epoxy plastic sealing body (3).

2. A photovoltaic protection power device module with a folded edge forming stable structure according to claim 1, characterized in that: The folded edge portions (60) are respectively and integrally structured to vertically connect the conductive copper sheet one (1) and the conductive copper sheet two (2).

3. A photovoltaic protection power device module with a folded edge forming stable structure according to claim 1, characterized in that: The surfaces of both sides of the copper sheet one packaging area (10) are respectively provided with sawtooth strip one (100); the surfaces of both sides of the copper sheet two packaging area (20) are respectively provided with sawtooth strip two (200).

4. A photovoltaic protection power device module with a folded edge forming stable structure according to claim 3, characterized in that: The jumper (4) is a U-shaped conductive sheet, one side of the U-shaped conductive sheet is bent and connected to the sawtooth strip (100) on one side surface by welding, and the other side of the U-shaped conductive sheet is bent and connected to the chip (5) by welding.

5. A photovoltaic protection power device module with a folded edge forming stable structure according to claim 3, characterized in that: At least four copper sheet one through holes (101) are arranged between the two side surfaces of the copper sheet one packaging area (10); and at least three copper sheet two through holes (201) are arranged between the two side surfaces of the copper sheet two packaging area (20).

6. A photovoltaic protection power device module with a folded edge forming stable structure according to claim 1, characterized in that: The conductive copper sheet one (1) and the conductive copper sheet two (2) are each provided with a tin block welding area (7).

7. A photovoltaic protection power device module with a folded edge forming stable structure according to claim 1, characterized in that: The conductive copper sheet one (1) and the conductive copper sheet two (2) are each provided with a positioning hole (8); the conductive copper sheet one (1) or the conductive copper sheet two (2) is provided with an anti-reverse positioning opening (9).

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