CN217770023U

CN217770023U - Solder mask welded photovoltaic junction box for tin sheet

Info

Publication number: CN217770023U
Application number: CN202221631860.1U
Authority: CN
Inventors: 徐小清
Original assignee: Ningbo Chuangyuan Photovoltaic Technology Co ltd
Current assignee: Ningbo Chuangyuan Photovoltaic Technology Co ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-11-08
Anticipated expiration: 2032-06-27

Abstract

The utility model provides a solder mask welded photovoltaic terminal box for tin piece, including anodal terminal box, axis terminal box and negative terminal box, anodal terminal box, axis terminal box and negative terminal box all include casing and upper cover, the inside of casing is provided with first copper sheet, be provided with the diode on the first copper sheet, the both ends of diode all are provided with bending type's connecting rod, the utility model provides an adopt the tin cream to glue the tin piece, form the form of paster, bend the connecting rod at diode both ends simultaneously and weld with the tin piece, two connecting rods of diode are longer with the tin piece contact surface, and the connection face that can weld when resistance welding is bigger, has the solder joint more than two to increased the area of contact of connection, adopted the integral type design of diode integration on the tin piece, improved production efficiency, avoided the emergence of rosin joint for it is more firm to connect, improved the security, contact resistance is less, and hidden danger is less.

Description

Solder mask welded photovoltaic junction box for tin sheet

Technical Field

The utility model belongs to the technical field of the photovoltaic terminal box, more specifically say, in particular to solder mask welded photovoltaic terminal box for tin sheet.

Background

The photovoltaic junction box is a connecting device between a solar cell array formed by solar cell modules and a solar charging control device, is a cross-field comprehensive design combining electrical design, mechanical design and material science, and is mainly used for connecting and protecting the solar photovoltaic modules, connecting electric power generated by the solar cells with an external circuit and conducting current generated by the photovoltaic modules.

Based on the above, the present inventors found that the following problems exist: present photovoltaic terminal box generally includes that box body, box body are equipped with the metalwork module, and the metalwork module includes metalwork and diode, and the diode can only adopt solder wire spot welding fixed between diode and the metalwork for the area of contact of connecting is less and the rosin joint appears easily, connects insecurely, can produce great solder joint, makes resistance great, and the rosin joint probability is also great, and the security can't obtain guaranteeing.

Therefore, in view of the above, research and improvement are made on the existing structure and defects, and a photovoltaic junction box for solder-resistance welding of a solder sheet is provided, so as to achieve the purpose of higher practical value.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a solder mask welded photovoltaic terminal box for tin piece to solve present photovoltaic terminal box and generally include the box body, be equipped with the metalwork module in the box body, the metalwork module includes metalwork and diode, the diode can only adopt soldering tin silk spot welding fixed between diode and the metalwork, a rosin joint appears for the area of contact of connecting is less and easily, connect insecurely, can produce great solder joint, make resistance great, the rosin joint probability is also great, the unable problem of guaranteeing that obtains of security.

The utility model discloses solder mask welded photovoltaic terminal box's purpose and efficiency are hindered with electric to tin piece is reached by following specific technological means:

the utility model provides a solder mask welded photovoltaic terminal box for tin piece, includes anodal terminal box, axis terminal box and negative terminal box, anodal terminal box, axis terminal box and negative terminal box all include casing and upper cover, the inside of casing is provided with first copper sheet, be provided with the diode on the first copper sheet, the both ends of diode all are provided with the connecting rod of bending type, the tin piece has all been welded, two to the top both sides of first copper sheet the connecting rod all welds in the surface of corresponding tin piece.

Furthermore, one end of the positive terminal box is electrically connected with a positive cable, one end of the negative terminal box is electrically connected with a negative cable, and the positive terminal box, the middle shaft terminal box and the negative terminal box are connected with each other.

Furthermore, the two sides of the first copper sheet are perpendicularly bent to form vertical plates, the top of each vertical plate is horizontally bent to form a mounting plate, and two positioning holes are formed in the top of each mounting plate.

Furthermore, the bottom of each shell is provided with a supporting seat, four corners of each supporting seat are provided with positioning columns matched with the positioning holes, and the middle of each supporting seat is provided with a trapezoidal groove.

Furthermore, a second copper sheet is arranged in the middle of the first copper sheet, and two baffle plates are formed by vertically bending the front side and the rear side of the second copper sheet, wherein the two baffle plates are in contact with the diode.

Further, the bottom of the shell of the positive terminal box and the bottom of the shell of the negative terminal box are both provided with cable clamping seats.

Furthermore, a first groove and a second groove are respectively formed in the shells of the positive terminal box and the negative terminal box, and a positive pole identifier and a negative pole identifier are respectively arranged in the first groove and the second groove.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model provides an adopt the tin cream to glue the tin piece and go, form the form of paster, bend the connecting rod at diode both ends simultaneously and weld with the tin piece, two connecting rods of diode are longer with the tin piece contact surface, the connection face that can weld is bigger when resistance welding, there are more than two solder joints, thereby increased the area of contact of connecting, adopted the integral type design of diode integration on the tin piece, improved production efficiency, avoided the emergence of rosin joint, make the connection more firm, improved the security, contact resistance is less, and hidden danger is less;

2. through setting up first copper sheet, riser, mounting panel, second copper sheet and baffle cooperation use to make the diode heat conduct fast and dispel the heat on first copper sheet and the second copper sheet, guarantee that the possibility of thermal failure of diode reduces, the both sides of first copper sheet are turned over and are rolled over and up prolong the increase area and make first copper sheet cooling surface bigger, the thermal diffusivity is better, need not extension casing length again simultaneously, the cooling surface that has increased first copper sheet has saved the cost again.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of the front view cross-section structure of the present invention.

Fig. 3 is a schematic view of a partial three-dimensional structure of the positive terminal box of the present invention.

Fig. 4 is an enlarged schematic view of a in fig. 3 according to the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a positive terminal box; 2. a middle shaft junction box; 3. a negative terminal box; 4. a housing; 5. an upper cover; 6. a supporting seat; 7. a positioning column; 8. a trapezoidal groove; 9. a cable clamping seat; 10. a first copper sheet; 11. a vertical plate; 12. mounting a plate; 13. a diode; 14. a connecting rod; 15. positioning holes; 16. a second copper sheet; 17. a baffle plate; 18. a tin sheet; 19. a first groove; 20. a second groove; 21. a positive pole mark; 22. and (5) identifying a negative pole.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are provided to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 4:

the utility model provides a solder mask welded photovoltaic terminal box is welded with resistance to solder, including anodal terminal box 1, axis terminal box 2 and negative terminal box 3, anodal terminal box 1, axis terminal box 2 and negative terminal box 3 all include casing 4 and upper cover 5, have increased the waterproof nature of terminal box, the inside of casing 4 is provided with first copper sheet 10, be provided with diode 13 on the first copper sheet 10, diode 13's both ends all are provided with the connecting rod 14 of bending type one-tenth, tin piece 18 has all been welded to the top both sides of first copper sheet 10, two connecting rods 14 all weld in corresponding tin piece 18's surface.

In other embodiments, the one end and the anodal cable electricity of anodal terminal box 1 are connected, the one end and the negative cable electricity of negative terminal box 3 are connected, anodal terminal box 1, axis terminal box 2 and negative terminal box 3 have shortened the mutual distance of panel and panel circuit connection when the engineering installation greatly, this kind of straight line mode of being qualified for the next round of competitions has not only reduced the cable conductor loss, has also reduced the loss of the generated energy that the line length brought, has promoted the subassembly power, and split type terminal box is better than integral type terminal box radiating effect.

In other embodiments, the two sides of the first copper sheet 10 are vertically bent to form the vertical plates 11, the top horizontal bending of the two vertical plates 11 is formed with the mounting plates 12, the top of each of the two mounting plates 12 is provided with two positioning holes 15, meanwhile, the two sides of the first copper sheet 10 are reversely bent to extend the area upwards so that the heat dissipation surface of the first copper sheet 10 is larger, the heat dissipation performance is better, the length of the shell does not need to be lengthened, the cost is saved due to the fact that the heat dissipation surface of the first copper sheet 10 is increased, the bottom of each shell 4 is provided with the supporting seat 6, positioning columns 7 matched with the positioning holes 15 are arranged at the four corners of the supporting seat 6, the middle of the supporting seat 6 is provided with the trapezoidal groove 8, the positioning columns 7 are inserted into the positioning holes 15, and therefore the first copper sheet 10 is fixed in the shell 4 and cannot shake.

In other embodiments, the second copper sheet 16 is disposed in the middle of the first copper sheet 10, and two blocking plates 17 are formed by vertically bending the front side and the rear side of the second copper sheet 16, wherein the two blocking plates 17 are in contact with the diode 13, the heat generated by the diode 13 is quickly conducted to the blocking plates 17, and the second copper sheet 16 conducts and dissipates heat.

In other embodiments, the bottom of the housing 4 of each of the positive terminal box 1 and the negative terminal box 3 is provided with a cable engaging seat 9, and the cable is mounted through the cable engaging seat 9.

In other embodiments, the housing 4 of the positive terminal box 1 and the housing 4 of the negative terminal box 3 are respectively provided with a first groove 19 and a second groove 20, the first groove 19 and the second groove 20 are respectively provided with a positive mark 21 and a negative mark 22, and the positive mark 21 and the negative mark 22 enable an installer to quickly and accurately connect the three-part terminal box with the photovoltaic module.

The specific use mode and function of the embodiment are as follows:

the utility model discloses in, set up two recesses on the first copper sheet 10, fill the tin cream in the recess inside, glue tin piece 18 through the tin cream and go, form the form of paster, bend connecting rod 14 at diode 13 both ends simultaneously and weld with tin piece 18, make two connecting rods 14 of diode 13 longer with the tin piece contact surface, the connection face that can weld is bigger during resistance welding, there are more than two solder joints, thereby the area of contact of connection has been increased, the integral type design that diode 13 integrates on tin piece 18 has been adopted, production efficiency has been improved, the emergence of rosin joint has been avoided, make the connection more firm, the security has been improved, contact resistance is less, and hidden danger is less; when the diode 13 works, heat generated by the diode 13 is quickly conducted to the first copper sheet 10 and the second copper sheet for heat dissipation, the possibility of thermal failure of the diode 13 is reduced, two sides of the first copper sheet 10 are reversely folded to be extended upwards to increase the area, so that the heat dissipation surface of the first copper sheet 10 is larger, the heat dissipation performance is better, meanwhile, the length of the shell does not need to be lengthened, and the cost is saved due to the fact that the heat dissipation surface of the first copper sheet is increased.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a solder mask welded photovoltaic terminal box for tin piece which characterized in that: including anodal terminal box (1), axis terminal box (2) and negative terminal box (3), anodal terminal box (1), axis terminal box (2) and negative terminal box (3) all include casing (4) and upper cover (5), the inside of casing (4) is provided with first copper sheet (10), be provided with diode (13) on first copper sheet (10), the both ends of diode (13) all are provided with connecting rod (14) of buckling the formation, tin piece (18) have all been welded to the top both sides of first copper sheet (10), two connecting rod (14) all weld in the surface of corresponding tin piece (18).

2. The solder resist-soldered photovoltaic junction box according to claim 1, wherein: one end of the positive terminal box (1) is electrically connected with a positive cable, one end of the negative terminal box (3) is electrically connected with a negative cable, and the positive terminal box (1), the middle shaft terminal box (2) and the negative terminal box (3) are arranged in the middle.

3. The solder resist-soldered photovoltaic junction box according to claim 1, wherein: the both sides of first copper sheet (10) are bent perpendicularly and are formed with riser (11), two the top horizontal bending of riser (11) is formed with mounting panel (12), two locating hole (15) have all been seted up at the top of mounting panel (12).

4. The solder resist-soldered photovoltaic junction box according to claim 3, wherein: the bottom of each shell (4) is provided with a supporting seat (6), four corners of each supporting seat (6) are provided with positioning columns (7) matched with the positioning holes (15), and the middle of each supporting seat (6) is provided with a trapezoidal groove (8).

5. The solder resist-soldered photovoltaic junction box according to claim 1, wherein: the middle of the first copper sheet (10) is provided with a second copper sheet (16), the front side and the rear side of the second copper sheet (16) are vertically bent to form two baffle plates (17), and the two baffle plates (17) are in contact with the diode (13).

6. The solder resist-soldered photovoltaic junction box according to claim 1, wherein: and cable clamping seats (9) are arranged at the bottoms of the shells (4) of the positive terminal box (1) and the negative terminal box (3).

7. The solder resist-soldered photovoltaic junction box according to claim 1, wherein: a first groove (19) and a second groove (20) are formed in the shell (4) of the positive terminal box (1) and the shell (4) of the negative terminal box (3) respectively, and a positive mark (21) and a negative mark (22) are arranged inside the first groove (19) and the second groove (20) respectively.