CN212413116U

CN212413116U - Converge and take adjustable type photovoltaic module of interval

Info

Publication number: CN212413116U
Application number: CN202022250498.0U
Authority: CN
Inventors: 景昌忠; 林剑河; 王毅
Original assignee: Yangzhou Yangjie Electronic Co Ltd
Current assignee: Yangzhou Yangjie Electronic Co Ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-01-26
Anticipated expiration: 2030-10-10

Abstract

Type photovoltaic module that converges area interval is adjustable. The utility model relates to a photovoltaic device especially relates to improvement to photovoltaic bypass diode module structure. The utility model provides a adaptable multiple photovoltaic module application scene satisfies the type photovoltaic module that converges area interval of taking adjustable of different confluence strip connection interval requirements. The LED packaging structure comprises a first pole piece, a second pole piece, a chip, a jumper wire and a packaging body, wherein a first converging hole is formed in the first pole piece, a second converging hole is formed in the second pole piece, the first pole piece, the chip, the jumper wire and the second pole piece are sequentially connected to form a diode circuit, the first pole piece is provided with a first pole piece wiring area, a first pole piece packaging area and a first pole piece extending area penetrating through the packaging body, the chip is arranged in the first pole piece packaging area on the first pole piece, and the first converging hole is formed in the first pole piece extending area; the second pole piece is provided with a second pole piece support arm extending into the packaging body. The utility model discloses the product heat dissipation is good, and the overcurrent ability is strong.

Description

Converge and take adjustable type photovoltaic module of interval

Technical Field

The utility model relates to a photovoltaic device especially relates to the improvement to photovoltaic bypass diode module structure.

Background

Since the industrial revolution, petrochemical energy has been the most important role in economic development, and has promoted human progress, but because the energy is not renewable, and causes greater pollution, and environmental problems are getting severe, people have higher environmental awareness, and the task of developing clean energy is more urgent. Solar energy is one of important clean energy, and an important conversion from solar energy to electric energy is a photovoltaic power generation assembly, wherein a cell sheet in the photovoltaic power generation assembly generates a photovoltaic effect under the irradiation of sunlight so as to output electric energy. When one of the battery pieces is shielded, the battery piece is used as a load without generating electricity to consume electric energy generated by other battery pieces, and the assembly is burnt down inevitably after a long time. In this case, in order to prevent the entire device from being damaged, a bypass diode must be connected in parallel to both ends of the device, and when the bypass diode is blocked, a current flows in the forward direction from the diode, thereby protecting the device.

The photovoltaic bypass diode is arranged in the junction box, so that the assembly can be protected from being damaged when a facula effect occurs, and when the diode is started, the short-circuit current (Isc) of the assembly flows in the forward direction of the diode, and the diode can generate temperature rise. In the early stage, when the power of the component is small (200W-300W), the conventional diode can meet the temperature rise condition (the junction temperature Tj of the diode is less than or equal to 200 ℃), but in order to realize the flat-price network connection as soon as possible, high-power components (400 plus 500W) are provided by large component manufacturers, so that the power consumption cost is reduced. Various new technologies of high-power assembly integration, including half piece, double glazing, two-sided etc. compare with traditional subassembly, most obvious is that short-circuit current (Isc) obviously rises, in addition need reserve the factor of safety during the design, lead to terminal box report current to reach 25A, and the highest reaches 30A even (traditional terminal box report current about 15A), so put forward high requirement to the temperature rise ability of diode. The module diode has the advantages of strong over-current capability, good heat dissipation and the like, and well meets the condition of large current, but the structural form of the traditional module is always as shown in fig. 6, the bus belt through holes (i.e. the first bus hole 11 and the second bus hole 41) are distributed at two sides of the plastic package body (the package body 2), the distance A between the first bus hole 11 and the second bus hole 41 is controlled by the size of the package body 2, and cannot be matched with the requirements of component clients, and the module diode has the following problems in practical application:

1. when the distance between the two confluence holes is required to be less than or equal to 10mm, the packaging distance of the chip is insufficient, and the chip cannot be packaged;

2. the product spacing of the ultra-large current (more than 20A) is designed to be too large, so that the requirement of customers is not met, and the conventional photovoltaic modules cannot be connected;

3. the module products with different distances have different shapes, so that the production line has huge investment and high cost.

The bus bars and perforations described above are explained as follows:

the bus bar is an extension of the component welding bar, has the main function of outputting electric energy generated by the solar component, and is connected with a bypass diode in the junction box to protect the component from being damaged by hot spots.

The through holes are holes of conducting strips (namely two pole pieces) of the bypass diode module, and can penetrate through the bus bars and be welded to realize connection of the assembly and the bypass diode.

SUMMERY OF THE UTILITY MODEL

The utility model provides an above problem, a scene is used to adaptable multiple photovoltaic module is provided, satisfies the difference and converges and take the adjustable type photovoltaic module of area interval of converging of connection interval requirement.

The technical scheme of the utility model: the LED packaging structure comprises a first pole piece, a second pole piece, a chip, a jumper wire and a packaging body, wherein a first converging hole is formed in the first pole piece, a second converging hole is formed in the second pole piece, the first pole piece, the chip, the jumper wire and the second pole piece are sequentially connected to form a diode circuit, the first pole piece is provided with a first pole piece wiring area, a first pole piece packaging area and a first pole piece extending area penetrating through the packaging body, the chip is arranged in the first pole piece packaging area on the first pole piece, and the first converging hole is formed in the first pole piece extending area;

the second pole piece is provided with a second pole piece support arm extending into the packaging body, and a gap is formed between the second pole piece support arm and the first pole piece extending area.

The length of a protruding area of the pole piece is 2-8 times of the width of the confluence hole.

The first confluence hole and the second confluence hole are both long groove-shaped holes, and the first confluence hole is parallel to the second confluence hole.

The packaging body is rectangular or L-shaped,

when the packaging body is L-shaped, the L-shaped extending part extends towards the two pole piece support arms. (to shorten the cantilever support distance of the second arm)

The first pole piece and the second pole piece are mutually coupled in L shapes respectively, and the gap is reserved.

The first pole piece is convex, the second pole piece is concave, the shapes of the first pole piece and the second pole piece are mutually coupled, and the gap is reserved.

The utility model discloses changed in the past photovoltaic module packaging body and located the symmetrical design in the middle of, set up the packaging body on one side of product. So that the two bus bar through holes are designed on one side of the package body instead of two sides. The first extending area of the pole piece is of a certain length, so that the first confluence hole in the first pole piece can be flexibly arranged at different positions, and different distances can be flexibly arranged between the first confluence hole and the second confluence hole without being limited by the plastic package body.

The utility model discloses a photovoltaic module owing to set up the extension zone, the copper sheet of reserving out can increase heat radiating area, reduces chip junction temperature, promotes product overcurrent ability, satisfies the requirement of bigger diode overcurrent ability. Meanwhile, the size of the body is not limited by the distance between the bus bars, and a plurality of chips can be plastically packaged.

The utility model can meet the use requirements of different photovoltaic modules, and can further standardize the photovoltaic module products to meet the requirements of different customers; different dies do not need to be designed for products with different specifications, and the manufacturing cost is greatly saved. Furthermore, the utility model discloses the product heat dissipation is good, and the overcurrent ability is strong.

Drawings

Figure 1 is a schematic structural view of the present invention,

FIG. 2 is a schematic structural diagram of a second pole piece of the present invention,

FIG. 3 is a schematic structural diagram of a first pole piece of the present invention,

FIG. 4 is a schematic view of another package of the present invention,

figure 5 is a schematic structural view of a second embodiment of the present invention,

fig. 6 is a schematic diagram of the background art of the present invention.

In the figure, 1 is a pole piece I, 10 is a pole piece I extending area, 11 is a confluence hole I, 11' is a variable position confluence hole I,

2 is a package, 3 is a chip, 4 is a second pole piece, 40 is a second pole piece arm, 41 is a second bus hole, 5 is a jumper wire, and 6 is a gap.

A is the hole interval that converges among the prior art in the picture, delta A does the utility model discloses well hole interval that converges.

Detailed Description

The utility model discloses as shown in fig. 1-5: the LED packaging structure comprises a first pole piece 1, a second pole piece 4, a chip 3, a jumper 5 and a packaging body 2, wherein a first convergence hole 11 is formed in the first pole piece 1, a second convergence hole 41 is formed in the second pole piece 4, the first pole piece 1, the chip 3, the jumper 5 and the second pole piece 4 are sequentially connected to form a diode circuit, the first pole piece 1 is provided with a first pole piece wiring area, a first pole piece packaging area and a first pole piece extending area 10 penetrating through the packaging body 2, the chip 3 is arranged in the first pole piece packaging area on the first pole piece 1, and the first convergence hole 11 is formed in the first pole piece extending area 10; the packaging area of the pole piece can be set to different sizes according to the requirements of customers so as to arrange different numbers of chips 3, thereby meeting the use requirements of large-current scenes.

The second pole piece 4 has a second pole piece support arm 40 extending into the package body 2, and a gap 6 is formed between the second pole piece support arm 40 and the first pole piece extending region 10. Ensure the insulation between the two. It should be noted here that, in photovoltaic application, the operating voltage is generally in the interval of 24-48V, and the utility model discloses the device is settled in the junction box, can satisfy the insulating requirement between two pole pieces completely.

The length of the first pole piece extending area 10 is 2-8 times of the width of the first confluence hole 11. This allows the first bus hole 11 to be positioned at different locations, such as the variable position first bus hole 11' of FIG. 1, varying the distance from the bus hole aperture 41.

The first confluence hole 11 and the second confluence hole 41 are both slotted holes, and the first confluence hole 11 and the second confluence hole 41 are parallel to each other.

The package body 2 is rectangular or L-shaped,

when the package body 2 is L-shaped, the L-shaped extension part extends towards the two pole piece arms 40. The cantilever support distance of the second support arm is shortened, and easy bending deformation is avoided.

The pole piece I1 and the pole piece II 4 are mutually coupled L-shaped respectively, and a gap 6 is reserved.

The first pole piece 1 is convex, the second pole piece 4 is concave, the shapes of the first pole piece and the second pole piece are mutually coupled, and the gap 6 is reserved. I.e. another embodiment as shown in fig. 5.

Claims

1. The photovoltaic module is characterized in that the first pole piece is provided with a first pole piece wiring area, a first pole piece packaging area and a first pole piece extending area penetrating through the packaging body, the chip is arranged in the first pole piece packaging area on the first pole piece, and the first convergence hole is arranged in the first pole piece extending area;

2. The module of claim 1, wherein the length of the extended area of the pole piece is 2-8 times the width of the bus hole.

3. The module of claim 1 wherein the first and second bus holes are slotted holes, the first and second bus holes being parallel to each other.

4. The bus bar pitch tunable photovoltaic module of claim 1, wherein the encapsulant is rectangular or L-shaped,

when the packaging body is L-shaped, the L-shaped extending part extends towards the two pole piece support arms.

5. The bus bar pitch tunable photovoltaic module of claim 1, wherein the first and second pole pieces are respectively L-shaped and coupled to each other, and the gap is reserved.

6. The bus bar pitch tunable photovoltaic module of claim 1, wherein the first pole piece is convex and the second pole piece is concave, and the first and second pole pieces are coupled to each other in shape and maintain the gap.