CN216773239U

CN216773239U - Axial diode photovoltaic junction box

Info

Publication number: CN216773239U
Application number: CN202122743317.2U
Authority: CN
Inventors: 丁而立; 刘逸飞
Original assignee: Jiangsu Huilang Electronic Technology Co ltd
Current assignee: Jiangsu Huilang Electronic Technology Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-06-17
Anticipated expiration: 2031-11-10

Abstract

The utility model discloses an axial diode photovoltaic junction box which comprises a box body, a cover plate and an axial diode arranged at the bottom of the inner side of the box body, wherein the box body is in a transverse strip shape, the cover plate is detachably fixed at the top of the box body, the axial diode comprises a packaging part and pins positioned at two ends of the packaging part, one ends of the pins far away from the packaging part are stamped into terminal pieces, the axial direction of the packaging part is horizontally arranged along the length direction of the box body and is flush with the two terminal pieces, the packaging part is positioned between the two terminal pieces, one end of the pin part close to the packaging part is a cylinder, the cylinder extends to the edge of the terminal pieces, and bus bar notches are formed in the terminal pieces. The distance between the packaging part and the terminal piece is less than 1 mm; the connection of the edge of the terminal piece and the column body is provided with an arc-shaped extending edge, one end of the column body, which is far away from the packaging part, is connected to the terminal piece from two sides, and the end part of the column body is an inclined plane. The axial diode photovoltaic junction box is narrow in width and cannot shield the battery piece.

Description

Axial diode photovoltaic junction box

Technical Field

The utility model relates to a photovoltaic junction box, and belongs to the technical field of photovoltaics.

Background

The solar junction box is a connector between a solar cell array formed by the solar cell modules and the solar charging control device, and provides a combined connection scheme of the solar cell panel for users. The double-glass solar cell module consists of two glass layers on the front side and the back side and a solar cell sheet positioned in the middle of the glass layers. Glass's insulating nature is superior to the backplate, and dual glass assembly can satisfy higher system voltage, and the wearability advantage is obvious, is applicable to the photovoltaic power plant in more acid rain or the big area of salt fog. Due to the fact that the structure of the solar cell module is different from that of a back plate solar cell module, a split type junction box is generally adopted. The photovoltaic junction box is generally fixed with a terminal by welding an axial diode and a bypass diode.

Disclosure of Invention

The utility model aims to solve the technical problem of providing an axial diode photovoltaic junction box which is narrow in width, does not shield a battery piece, is good in stability and is excellent in heat dissipation performance.

The utility model provides a technical scheme for solving the technical problems, which comprises the following steps: the utility model provides an axial diode photovoltaic terminal box, includes box body, apron, arranges the axial diode of box body inboard bottom in, the box body is horizontal rectangular form, the apron is removable to be fixed the top of box body, the axial diode includes encapsulation portion and the pin that is located encapsulation portion both ends, the terminal piece is stamped into to the one end that encapsulation portion was kept away from to the pin, and the axial of encapsulation portion sets up and flushes with two terminal pieces along the length direction level of box body, encapsulation portion is located between two terminal pieces, the one end that the pin is close to encapsulation portion is the cylinder, the cylinder extends to the edge that surpasss the terminal piece, the busbar notch has been seted up on the terminal piece.

The distance between the packaging part and the terminal piece is less than 1 mm; the edge of the terminal piece is provided with an arc-shaped extending edge at the joint of the column body and the edge of the terminal piece, one end of the column body, far away from the packaging part, is connected to the terminal piece from two sides, and the end part of the column body is an inclined plane.

The terminal piece is the rectangle copper sheet, the length of terminal piece is greater than the width, and the busbar notch is located the one side that is close to encapsulation portion, all be equipped with busbar connecting portion on the terminal piece, the one end that encapsulation portion was kept away from to the cylinder extends to the position department that is close to the busbar notch.

The terminal piece is attached to and fixed on the boss, and a bus bar through groove matched with the position and the shape of the bus bar groove opening is formed in the boss.

The boss is provided with an arc-shaped groove for supporting the column body, and a groove which extends downwards to the bottom of the box body is formed in the position, corresponding to the packaging part, of the boss.

The terminal plate is characterized in that a plurality of limiting columns are arranged on the boss, limiting through holes matched with the limiting columns are formed in the terminal plate, the limiting columns penetrate through the corresponding limiting through holes and fix the terminal plate on the boss through stamping deformation.

The box body is provided with a buckle, the side edge of the cover plate is provided with a bayonet matched with the buckle in a clamping manner, and the cover plate is fixedly connected to the box body in a clamping manner.

The axial diode photovoltaic junction box further comprises a cable, a connector and a line card, wherein the cable extends out of the box body, one end of the cable, which is positioned in the box body, is fixedly welded with one terminal, and the other end of the cable, which is positioned outside the box body, is connected with the connector; the cable of box body stretches out the department and sets up the ply-yarn drill groove with ply-yarn drill assorted, thereby the ply-yarn drill passes through ultrasonic welding fixed connection and is in spacing in the ply-yarn drill groove the cable, the cable of box body and terminal piece junction are seted up jaggedly, the breach both sides still are equipped with the reinforcing plate.

A handle is arranged on one side outside the box body.

The utility model has the positive effects that:

(1) the axial diode photovoltaic junction box adopts the axial diode, and the copper pin of the axial diode is firstly punched into the terminal piece and then packaged, so that hidden crack caused by stress of the chip during punching can be avoided. The scheme of integrating the terminal and the axial diode is favorable for improving the stability of the whole structure, improving the heat dissipation performance, reducing accessories and installation steps, reducing the cost and improving the production efficiency. The box body of the axial diode photovoltaic junction box is transversely long-strip-shaped, the width of the box body is reduced as much as possible due to the structure of the axial diode, the box body cannot shield the cell pieces when being installed on the double-glass solar cell module, the using amount of cables can be reduced to the greatest extent, and the cables cannot shield the cell pieces.

(2) According to the axial diode of the axial diode photovoltaic junction box, the terminal piece is punched and then packaged, the distance between the packaging part and the terminal piece is smaller than 1mm, the stability of the photovoltaic junction box is guaranteed, the overall length of the terminal piece and the packaging part is reduced, and the structure is compact.

Drawings

The axial diode photovoltaic junction box of the utility model is further explained with reference to the accompanying drawings.

Fig. 1 is an exploded view of an axial diode pv junction box of the embodiment 1;

fig. 2 is a schematic overall structure diagram of the axial diode photovoltaic junction box of the embodiment 1;

FIG. 3 is a schematic bottom structure view of the case of FIG. 1;

FIG. 4 is a schematic structural view of the cover plate of FIG. 1;

fig. 5 is an overall schematic view of the axial diode photovoltaic junction box of embodiment 2.

The above reference numerals are as follows:

the box body 1, boss 100, bus bar through groove 101, arc groove 103, recess 104, spacing post 105, buckle 106, gluey groove 107, wire clamp groove 110, breach 109, apron 2, bayonet 21, encapsulation portion 31, pin 32, terminal piece 321, cylinder 322, arc extend 323, bus bar connecting portion 33, spacing through-hole 34, axial diode 4, bus bar notch 43, cable 5, connector 6, ply-yarn drill 7.

Detailed Description

Example 1

See fig. 1 to 4, the axial diode photovoltaic junction box of this embodiment, including box body 1, the apron 2, arrange axial diode 4 of 1 inboard bottom of box body in, box body 1 is horizontal rectangular form, apron 2 is removable to be fixed at the top of box body 1, axial diode 4 includes encapsulation portion 31 and the pin 32 that is located encapsulation portion 31 both ends, terminal piece 321 is stamped into to the one end that pin 32 kept away from encapsulation portion 31, the axial of encapsulation portion 31 sets up and flushes with two terminal pieces 321 along the length direction level of box body 1, encapsulation portion 31 is located between two terminal pieces 321, the one end that pin 32 is close to encapsulation portion 31 is cylinder 322, cylinder 322 extends to the edge that surpasses terminal piece 321, bus bar notch 43 has been seted up on the terminal piece 321.

The space between the packaging part 31 and the terminal piece 321 is smaller than 1mm while the stability of the photovoltaic junction box is ensured. An arc-shaped extending edge 323 is arranged at the connection position of the edge of the terminal piece 321 and the cylinder 322, and one end of the cylinder 322, which is far away from the packaging part 31, is connected to the terminal piece 321 from two sides and the end part is an inclined plane.

The terminal piece 321 is a rectangular copper piece, the length of the terminal piece 321 is greater than the width, the bus bar notch 43 is located at one side close to the packaging part 31, the terminal piece 321 is provided with a bus bar connecting part 33, and one end of the column 322 far away from the packaging part 31 extends to a position close to the bus bar notch 43.

The boss 100 is arranged at the bottom of the inner side of the box body 1, the terminal piece 321 is attached and fixed on the boss 100, and the boss 100 is provided with a bus bar through groove 101 matched with the position and the shape of the bus bar groove 43.

The boss 100 is provided with an arc-shaped groove 103 for supporting the cylinder 322, and a groove 104 extending downwards to the bottom of the box body is arranged at the position of the boss 100 corresponding to the packaging part 31.

The boss 100 is provided with a plurality of limiting columns 105, the terminal piece 321 is provided with limiting through holes 34 matched with the limiting columns 105, and the limiting columns 105 penetrate through the corresponding limiting through holes 34 and fix the terminal piece 321 on the boss 100 through stamping deformation.

The apron 2 of the axial diode photovoltaic terminal box of this embodiment can be opened by the edgewise, is equipped with buckle 106 on the box body 1, and the side of apron 2 is equipped with the bayonet 21 with buckle 106 joint complex, and 2 joints of apron are fixed on box body 1.

The axial diode photovoltaic junction box of the embodiment further comprises a cable 5, a connector 6 and a line card 7, wherein the cable 5 extends out of the box body 1, one end of the cable 5, which is positioned in the box body 1, is welded and fixed with one of the terminal pieces 321, and the other end of the cable 5, which is positioned outside the box body 1, is connected with the connector 6; the cable 5 of box body 1 stretches out the department and sets up the ply-yarn drill groove 110 with ply-yarn drill 7 assorted, thereby ply-yarn drill 7 passes through ultrasonic welding fixed connection in the ply-yarn drill groove 110 spacing cable 5, and the breach 109 has been seted up to the cable 5 of box body 1 and terminal piece 321 junction.

Example 2

Referring to fig. 5, the axial diode photovoltaic junction box of the present embodiment is the same as embodiment 1 except that: there are no line card 7, cable 5, line card slot 110, notch 109, stiffener 111 and connector 6, and a grip 112 is provided on the outer side of the case 1.

It should be understood that the above-described embodiments are merely examples provided for clearly illustrating the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious variations or modifications which fall within the spirit of the utility model are intended to be covered by the scope of the present invention.

Claims

1. The utility model provides an axial diode photovoltaic terminal box, includes box body (1), apron (2), arranges axial diode (4) of box body (1) inboard bottom in, box body (1) is horizontal rectangular form, apron (2) are removable to be fixed the top of box body (1), its characterized in that: axial diode (4) are including encapsulation portion (31) and pin (32) that are located encapsulation portion (31) both ends, terminal piece (321) are stamped into to pin (32) keep away from the one end of encapsulation portion (31), and the axial of encapsulation portion (31) sets up and flushes with two terminal piece (321) along the length direction level of box body (1), encapsulation portion (31) are located between two terminal piece (321), the one end that pin (32) are close to encapsulation portion (31) is cylinder (322), cylinder (322) extend to the edge that surpasss terminal piece (321), bus bar notch (43) have been seted up on terminal piece (321).

2. The axial diode photovoltaic junction box of claim 1, wherein: the distance between the packaging part (31) and the terminal piece (321) is less than 1 mm; an arc-shaped extending edge (323) is arranged at the connecting position of the edge of the terminal piece (321) and the column body (322), one end, far away from the packaging part (31), of the column body (322) is connected to the terminal piece (321) from two sides, and the end part is an inclined plane.

3. The axial diode photovoltaic junction box of claim 1, wherein: the terminal piece (321) is a rectangular copper sheet, the length of the terminal piece (321) is larger than the width, the bus bar notch (43) is located on one side close to the packaging part (31), the terminal piece (321) is provided with a bus bar connecting part (33), and one end, far away from the packaging part (31), of the column body (322) extends to the position close to the bus bar notch (43).

4. The axial diode photovoltaic junction box of claim 1, wherein: the inside bottom of box body (1) is equipped with boss (100), terminal piece (321) laminating and fixing on boss (100), seted up on boss (100) with busbar notch (43) position and shape assorted busbar logical groove (101).

5. The axial diode photovoltaic junction box of claim 4, wherein: an arc-shaped groove (103) for supporting the cylinder (322) is formed in the boss (100), and a groove (104) extending downwards to the bottom of the box body is formed in the position, corresponding to the packaging portion (31), of the boss (100).

6. The axial diode photovoltaic junction box of claim 4, wherein: be equipped with a plurality of spacing posts (105) on boss (100), be equipped with on terminal piece (321) with spacing post (105) assorted spacing through-hole (34), spacing post (105) pass corresponding spacing through-hole (34) and will through stamping deformation terminal piece (321) are fixed on boss (100).

7. The axial diode photovoltaic junction box of claim 1, wherein: be equipped with buckle (106) on box body (1), the side of apron (2) be equipped with buckle (106) joint complex bayonet socket (21), apron (2) joint is fixed on box body (1).

8. The axial diode photovoltaic junction box of any of claims 1 to 7, wherein: the cable fixing device is characterized by further comprising a cable (5), a connector (6) and a line card (7), wherein the cable (5) extends out of the box body (1), one end, located in the box body (1), of the cable (5) is fixedly welded with one terminal (3), and the other end, located outside the box body (1), of the cable (5) is connected with the connector (6); the cable (5) of box body (1) stretches out the department and sets up with ply-yarn drill (7) assorted ply-yarn drill groove (110), thereby ply-yarn drill (7) pass through ultrasonic welding fixed connection in line draw-in groove (110) spacing cable (5), breach (109) are seted up with terminal piece (321) junction in cable (5) of box body (1).

9. The axial diode photovoltaic junction box of any of claims 1 to 7, wherein: a handle (112) is arranged on one side outside the box body (1).