Axial diode module and junction box

Abstract

The utility model relates to an axial diode module, which comprises an axial diode, the axial diode comprises a packaging part and pins located at two ends of the packaging part, one end of each pin far away from the packaging part is stamped into a terminal sheet, the axial direction of the packaging part is horizontally arranged along the width direction of the terminal sheet and is flush with the two terminal sheets, and the packaging part is provided with a plurality of pins. The packaging part is located between the two terminal sheets, one end, close to the packaging part, of each pin is an L-shaped bent column body, and the two sides of the packaging part, the corresponding terminal sheets and the corresponding pins form a bus bar notch in a surrounding mode respectively, the bus bar notch further comprises two heat dissipation blocks, and the number of the heat dissipation blocks is two. And the heat dissipation blocks are respectively positioned below the corresponding terminal sheets and are fixed on the corresponding terminal sheets through laser welding. The high-power LED module is small in size, compact in structure and good in heat dissipation.

Description

TECHNICAL FIELD

[0001] The utility model relates to an axial diode module belongs to photovoltaic technical field. BACKGROUND

[0002] The photovoltaic module mainly includes bypass diode, copper plate conductive terminal, cable and connector, wherein the positive and negative poles of the bypass diode are respectively connected with the copper plate conductive terminal through welding process to form an electrical connection, a through hole is formed on the copper plate conductive terminal to pass through the bus bar, and a solder pre-storage area is arranged, when the junction box is assembled with the photovoltaic module, the bus bar of the module passes through the through hole and is welded on the copper plate through soldering, thereby realizing the connection between the two pins of the diode and the bus bar of the photovoltaic module. The design of the junction box needs to form the copper plate conductive terminal through stamping process, and then the bypass diode is welded with the positive and negative copper plate conductive terminals to form a bypass protection module, which functions to conduct the current and voltage generated by the battery array in the solar photovoltaic module to the external channel, is an important component for connecting the photovoltaic module battery panel and the inverter in the solar power generation system, and is a comprehensive design combining electrical design, mechanical design and material science.

[0003] Chinese patent document CN202223589825.0 discloses a novel axial diode photovoltaic junction box, which comprises a box body, a cover plate, a terminal, an axial diode and a cable, the box body is in a horizontal strip shape, the cover plate is detachably fixed on the top of the box body, the terminal is two horizontally spaced metal sheets, one end of the terminal in the longitudinal direction is provided with an extended diode connecting portion, the top of the terminal is provided with a bus bar connecting portion, the two ends of the terminal in the horizontal direction are respectively provided with a first downward extending fold and a second downward extending fold, the axial diode is horizontally arranged between the two terminals and on one side of the diode connecting portion, the two ends of the axial diode are provided with protruding L-shaped pins, the bottom of the diode connecting portion is connected with the L-shaped pins close to the axial diode, one end of the L-shaped pin away from the axial diode is connected with the cable, the inner bottom of the box body is provided with a boss, and the terminal is attached and fixed on the boss. The diode module in the invention has poor stability and low heat dissipation efficiency. SUMMARY

[0004] The utility model wants to solve the technical problem of providing a kind of axial diode module with small volume, compact structure and good heat dissipation.

[0005] The utility model discloses a technical scheme that solves the above technical problem is: a kind of axial diode module, including axial diode, the axial diode includes package and the pin located at the both ends of package, the pin is punched into terminal sheet at the end away from package, the package is horizontally arranged along the width direction of terminal sheet and flush with two terminal sheets, the package is located between two terminal sheets, the pin is the column body that is bent in L type at the end close to package, the both sides of the package are respectively surrounded with corresponding terminal sheet and pin and form busbar notch also include heat dissipation block, the heat dissipation block has two, the heat dissipation block is respectively located below corresponding terminal sheet and laser welding is fixed on corresponding terminal sheet.

[0006] Preferably, the terminal sheet is a copper sheet punched from the pin, and the heat dissipation block is an aluminum block.

[0007] Preferably, each terminal sheet has at least two terminal sheet limiting holes formed on the surface thereof.

[0008] Preferably, each heat dissipation block is located between two terminal sheet limiting holes on the top thereof, and the width of the heat dissipation block is less than the width of the terminal sheet.

[0009] Preferably, the thickness of the heat dissipation block is greater than the thickness of the terminal sheet.

[0010] Preferably, the area of the terminal sheet is greater than the area of the heat dissipation block.

[0011] Another technical scheme proposed by the utility model to solve the above technical problem is a terminal box, which comprises a box body and an axial diode module, and the axial diode module is fixed in the box body.

[0012] The axial diode module of the utility model has the following positive effects: the axial diode module of the utility model has heat dissipation blocks attached to the terminal sheets below the terminal sheets, and the axial diode is located between the terminal sheets and the heat dissipation blocks, the aluminum blocks on the heat dissipation blocks are thickened, and the heat dissipation effect can be significantly improved. The package of the axial diode is parallel to the terminal sheets on both sides thereof, the pins are in L shape, and the connection distance between the terminal sheets is shortened, so that the transmission is faster and more stable. BRIEF DESCRIPTION OF DRAWINGS

[0013] The axial diode module of the utility model will be further described below with reference to the drawings.

[0014] Figure 1 It is a structure schematic view of the axial diode module of the embodiment 1.

[0015] Figure 2 It is a bottom view of Figure 1

[0016] Figure 3 ​The structural schematic diagram of the embodiment 2.

[0017] The above-mentioned reference signs are as follows:

[0018] Axial diode 1, pin 11, packaging part 12, terminal sheet 2, terminal sheet limiting hole 21, heat dissipation block 3, box body 4. DETAILED DESCRIPTION Embodiment 1

[0019] See Figures 1 to 2 An axial diode module, comprising an axial diode 1, the axial diode 1 comprising a packaging part 12 and pins 11 located at both ends of the packaging part 12, the pins 11 being punched into terminal sheets 2 at the ends away from the packaging part 12, the axial direction of the packaging part 12 being horizontally arranged along the width direction of the terminal sheets 2 and being flush with the two terminal sheets 2, the packaging part 12 being located between the two terminal sheets 2, the end of the pin 11 close to the packaging part 12 being an L-shaped column, the two sides of the packaging part 12 and the corresponding terminal sheet 2 and pin 11 surrounding a busbar notch, further comprising heat dissipation blocks 3, the heat dissipation blocks 3 being two, the heat dissipation blocks 3 being respectively located below the corresponding terminal sheet 2 and being laser welded and fixed on the corresponding terminal sheet 2.

[0020] The terminal sheet 2 is a copper sheet punched from the pin 11, and the heat dissipation block 3 is an aluminum block.

[0021] Each terminal sheet 2 is provided with at least two terminal sheet limiting holes 21 on the surface. Each heat dissipation block 3 is located between the two terminal sheet limiting holes 21 on the top thereof, and the width of the heat dissipation block 3 is less than the width of the terminal sheet 2. The thickness of the heat dissipation block 3 is greater than the thickness of the terminal sheet 2. The area of the terminal sheet 2 is greater than the area of the heat dissipation block 3. Embodiment 2

[0022] See Figure 3 A terminal box, comprising a box body 4 and an axial diode module, the axial diode module being fixed in the box body 4.

[0023] Obviously, the above-mentioned embodiments are only examples for clearly illustrating the embodiments of the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above-mentioned description. Here, it is not necessary and impossible to exhaust all the embodiments. The changes or variations which are extended from the spirit of the present application are still within the protection scope of the present application.

Claims

1. An axial diode module comprising an axial diode (1), the axial diode (1) comprising a package portion (12) and leads (11) located at both ends of the package portion (12), an end of the lead (11) away from the package portion (12) being stamped into a terminal tab (2), the axial direction of the package portion (12) being horizontally arranged along the width direction of the terminal tab (2) and flush with the two terminal tabs (2), the package portion (12) being located between the two terminal tabs (2), an end of the lead (11) close to the package portion (12) being a column body bent into an L shape, and both sides of the package portion (12) and the corresponding terminal tab (2) and lead (11) surrounding the bus bar notch, characterized in that, Further comprising heat dissipation blocks (3), the heat dissipation blocks (3) are two, the heat dissipation blocks (3) are respectively located below the corresponding terminal sheet (2) and are fixed on the corresponding terminal sheet (2) by laser welding.

2. The axial diode module of claim 1, wherein, The terminal sheet (2) is a copper sheet punched by a pin (11), and the heat dissipation block (3) is an aluminum block.

3. The axial diode module of claim 1, wherein, At least two terminal sheet limiting holes (21) are arranged on the surface of each terminal sheet (2).

4. The axial diode module of claim 3, wherein, Each heat dissipation block (3) is located between the two terminal sheet limiting holes (21) on the top of the heat dissipation block (3), and the width of the heat dissipation block (3) is less than the width of the terminal sheet (2).

5. The axial diode module of any one of claims 1 to 4, wherein, The thickness of the heat dissipation block (3) is greater than the thickness of the terminal sheet (2).

6. The axial diode module of any one of claims 1 to 4, wherein, The area of the terminal sheet (2) is greater than the area of the heat dissipation block (3).

7. A terminal block, characterized by The axial diode module as claimed in claim 1 is fixed in a box body (4).

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