Photovoltaic diode module for enhancing strength of plastic package body

Abstract

The utility model relates to a photovoltaic diode module, in particular to a photovoltaic diode module for enhancing the strength of a plastic package body, which comprises a first frame, a second frame, a crystal grain and a conductor, one surface of the crystal grain is arranged on a base island of the first frame, and the other surface of the crystal grain is connected with the second frame through the conductor. A gap is reserved between the ends, close to each other, of the first frame and the second frame. A plastic package body is arranged outside the crystal grains and the conductors. The plastic package body comprises a covering part and a reinforcing part, the covering part wraps the outer side of the first frame where the crystal grains and the conductor are located, the reinforcing part extends from the covering part to the direction of the second frame for a certain distance and wraps part of the second frame, and the packaging structure has the advantages of being simple in structure, high in strength and excellent in heat dissipation, and the plastic package body is not prone to deformation.

Description

Technical Field

[0001] The utility model relates to a photovoltaic diode module, in particular to a photovoltaic diode module with enhanced plastic sealing body strength. Background Art

[0002] In the production of photovoltaic modules, small-sized wafer photovoltaic diode modules are often used to reduce costs, but they often generate more heat. To meet this challenge, increasing the copper frame is one of the means to optimize heat dissipation. However, this leads to greater stress when welding with the photovoltaic busbar due to the increased frame size, making the original plastic package easy to deform, especially on the positive side, due to the narrow strip welding design between the jumper and the frame. To ensure product stability and reliability, the plastic package structure needs to be improved. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in order to solve the problems existing in the prior art, a photovoltaic diode module with enhanced plastic sealing strength is provided.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a photovoltaic diode module with enhanced plastic seal strength, comprising a first frame, a second frame, a crystal grain and a conductor, one surface of the crystal grain is arranged on a base island of the first frame, the other surface of the crystal grain is connected to the second frame through a conductor, a gap is left between the ends of the first frame and the second frame that are close to each other, and a plastic seal is arranged outside the crystal grain and the conductor;

[0005] The plastic package body includes a covering part and a reinforcing part. The covering part wraps around the outside of the first frame where the crystal grain and the conductor are located. The reinforcing part extends from the covering part to the second frame for a distance and wraps around part of the second frame.

[0006] Furthermore, a first busbar through hole is provided on the outer side of the base island of the first frame, a second busbar through hole is provided on the outer side of the conductor connection on the second frame, and a making way hole for making way for the second busbar through hole is provided on the reinforcement part.

[0007] Furthermore, the first frame has a reserved area for a first tin block welding part, and the second frame has a reserved area for a second tin block welding part.

[0008] Furthermore, a first tin block welding portion reserved area is provided on the first frame outside the first bus bar, and a second tin block welding portion reserved area is provided on the second frame outside the second bus bar.

[0009] Furthermore, the wrapping length of the reinforced portion on the surface of the second frame where the conductor is located is shorter than the wrapping length of the reinforced portion on another surface of the second frame.

[0010] The beneficial effect of the utility model is that the photovoltaic diode module with enhanced plastic sealing body strength of the utility model has the characteristics of simple structure, high strength, excellent heat dissipation and the plastic sealing body is not easy to deform.

[0011] Reduce deformation: By directly welding the busbars through reserved gaps, lateral force on the plastic package is avoided, fundamentally solving the deformation problem of the plastic package caused by welding stress.

[0012] Enhanced structural strength: The addition of reinforcing ribs significantly improves the mechanical strength of the plastic package at key locations, ensuring the structural stability of the module and its long-term reliability.

[0013] Simplified assembly process: The new design simplifies the welding steps between photovoltaic modules and busbars, improves production efficiency, and reduces the defective rate caused by improper assembly.

[0014] Maintain heat dissipation performance: The improvement of the plastic package body is carried out under the premise of ensuring that the frame size remains unchanged, without affecting the original heat dissipation design, ensuring the thermal management efficiency of the module. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 .

[0017] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 .

[0018] Figure 3 This is a schematic diagram of the structure of the utility model Figure 3 .

[0019] In the figure: 1. second frame, 2. first frame, 3. grain, 4. conductor, 5. covering part, 6. reinforcing part, 7. second bus bar through hole, 8. first bus bar through hole, 9. second tin block welding part reserved area, 10. first tin block welding part reserved area. DETAILED DESCRIPTION

[0020] Now the utility model is further described in detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0021] like Figures 1 to 3 A photovoltaic diode module with enhanced plastic package strength is shown, comprising a first frame 2, a second frame 1, crystal grains 3 and conductors 4. The first frame 2 in the figure is a positive electrode frame, and the second frame 1 is a negative electrode frame.

[0022] One surface of the crystal grain 3 is arranged on the base island of the first frame 2, and the other surface of the crystal grain 3 is connected to the second frame 1 through the conductor 4. A gap is left between the ends of the first frame 2 and the second frame 1 that are close to each other, and a plastic package is arranged outside the crystal grain 3 and the conductor 4.

[0023] The plastic package includes a covering portion 5 and a reinforcing portion 6. The covering portion 5 is wrapped around the outside of the first frame 2 where the crystal grain 3 and the conductor 4 are located. The reinforcing portion 6 extends a distance from the covering portion 5 toward the second frame 1 and wraps part of the second frame 1.

[0024] In order to reduce deformation, a first busbar through hole 8 is opened on the outer side of the base island of the first frame 2, a second busbar through hole 7 is opened on the outer side of the connection of the conductor 4 on the second frame 1, and a make way hole for the second busbar through hole 7 is opened on the reinforcement part 6.

[0025] In order to enhance the structural strength, the wrapping length of the surface reinforcement portion 6 of the second frame 1 where the conductor 4 is located is shorter than the wrapping length of another surface reinforcement portion 6 of the second frame 1 .

[0026] To facilitate subsequent operations, the first frame 2 has a first tin block welding part reserved area 10, and the second frame 1 has a second tin block welding part reserved area 9; further, the first frame 2 outside the first bus bar through hole 8 has a first tin block welding part reserved area 10, and the second frame 1 outside the second bus bar through hole 7 has a second tin block welding part reserved area 9.

[0027] As mentioned above, the first frame 2 is a positive electrode frame, and the second frame 1 is a negative electrode frame. The corresponding first bus bar through hole 8 can also be regarded as a positive bus bar through hole, and the second bus bar through hole 7 can be regarded as a negative bus bar through hole.

[0028] The above description only describes the specific implementation methods of the utility model. Various examples do not limit the essential content of the utility model. Ordinary technicians in the relevant technical field can modify or deform the specific implementation methods described above after reading the description without departing from the essence and scope of the utility model.

Claims

1. A photovoltaic diode module with enhanced plastic encapsulation strength, comprising a first frame, a second frame, a crystal grain and a conductor, wherein one surface of the crystal grain is arranged on a base island of the first frame, and the other surface of the crystal grain is connected to the second frame through a conductor, a gap is left between the ends of the first frame and the second frame that are close to each other, and a plastic encapsulation is arranged outside the crystal grain and the conductor; Features: The plastic package body includes a covering part and a reinforcing part. The covering part wraps around the outside of the first frame where the crystal grain and the conductor are located. The reinforcing part extends a distance from the covering part toward the second frame and wraps around part of the second frame.

2. A photovoltaic diode module with enhanced plastic package strength as claimed in claim 1, characterized in that: A first busbar through hole is provided on the outer side of the base island of the first frame, a second busbar through hole is provided on the outer side of the conductor connection of the second frame, and a making way hole for making way for the second busbar through hole is provided on the reinforcement part.

3. A photovoltaic diode module with enhanced plastic package strength as claimed in claim 1, characterized in that: The first frame has a first tin block welding part reserved area, and the second frame has a second tin block welding part reserved area.

4. A photovoltaic diode module with enhanced plastic package strength as claimed in claim 2, characterized in that: A first tin block welding portion reserved area is provided on the first frame outside the first bus bar, and a second tin block welding portion reserved area is provided on the second frame outside the second bus bar.

5. A photovoltaic diode module with enhanced plastic package strength as claimed in claim 1, characterized in that: The wrapping length of the reinforced portion of the second frame surface where the conductor is located is shorter than the wrapping length of another reinforced portion of the second frame surface.

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