Perovskite assembly junction box

Abstract

The utility model discloses a perovskite assembly junction box, and relates to the field of photovoltaic technology. Comprising a supporting seat, a metal conductive terminal and a diode which are positioned in a box body, the metal conductive terminals can be quickly mounted and positioned through the arrangement of the supporting seat structure; the diode is electrically connected with the pair of metal conductive terminals in advance, through the design of the multi-boss structure of the metal conductive terminals, the stability of electrical connection between the diode and the cable is improved, the long-term use stability of the junction box is further improved, and the failure probability is reduced.

Description

Perovskite module junction box Technical Field

[0001] This utility model relates to the field of photovoltaic technology, and in particular to the improvement of the junction box structure for perovskite modules. Background Technology

[0002] Perovskite solar cells are a new type of solar cell, primarily composed of perovskite crystalline material, hence also known as perovskite modules, while traditional monocrystalline silicon solar cells are made from monocrystalline silicon wafers. Perovskite and monocrystalline silicon solar cells also differ in performance. First, perovskite solar cells have higher conversion efficiencies, reaching over 20%, while monocrystalline silicon solar cells typically have conversion efficiencies around 15%. Second, perovskite solar cells perform better under low-light conditions, while monocrystalline silicon solar cells generally perform worse in this regard.

[0003] Perovskite solar modules are primarily used for photovoltaic (PV) power generation and can be applied to centralized PV power plants, photovoltaic glass curtain walls, indoor PV systems, solar-powered cars, portable electronic products, and wearable products such as PV backpacks. They can be manufactured entirely at low temperatures, raw materials are readily available, and both production line investment and module manufacturing costs are lower than those of crystalline silicon PV products, resulting in a lower levelized cost of electricity (LCOE). Junction boxes, as an indispensable part of PV modules, play a significant role in the PV industry.

[0004] Junction boxes for crystalline silicon solar modules include components such as the box body, metal conductors, diodes, and a cover. Design flaws in the internal components not only cause inconvenience in production and assembly, significantly impacting production efficiency, but also lead to electrical connection failures after prolonged operation. Therefore, improving the reliability of electrical connections and enhancing assembly efficiency without increasing the size of the junction box is a pressing technical problem that needs to be solved in this project. Summary of the Invention

[0005] To address the above problems, this utility model provides a perovskite component junction box that improves the reliability of electrical connections and enhances assembly efficiency without increasing the size of the junction box.

[0006] The technical solution of this utility model is:

[0007] Perovskite module junction box, including:

[0008] The box has cable threading holes on the side;

[0009] The support base is fixedly installed inside the box and is provided with a diode mounting position and a pair of terminal mounting positions;

[0010] A pair of metal conductive terminals are provided, each disposed on a corresponding terminal mounting position;

[0011] A diode is located at the diode mounting position, with its two pins electrically connected to the bottom surface of the corresponding metal conductive terminal; the metal conductive terminal is provided with a first protrusion for contacting the diode.

[0012] Specifically, the bottom of the cable threading hole is hollowed out, and the cable is secured in the cable threading hole by a fixedly connected clamping block.

[0013] Specifically, the terminal mounting position is provided with a positioning post;

[0014] The metal conductive terminal is provided with a positioning hole that is adapted to the positioning post.

[0015] Specifically, the terminal mounting position is provided with a plurality of positioning plates for limiting the position of the metal conductive terminal.

[0016] Specifically, the top of the positioning plate is chamfered.

[0017] Specifically, the front end of the metal conductive terminal is provided with a second protrusion for electrical connection with the cable line.

[0018] Specifically, the inner side wall of the box is provided with an overflow compartment with a top opening;

[0019] The top surface of the overflow container is lower than the top surface of the box body.

[0020] Specifically, the top surface of the box is provided with a fixedly connected lid.

[0021] Specifically, the cable has a pair of through holes, namely a positive through hole and a negative through hole.

[0022] Specifically, the cable is electrically connected to a metal conductive terminal through the cable thread hole.

[0023] This utility model includes a support base, metal conductive terminals, and a diode located inside the box. The support base structure enables the metal conductive terminals to be quickly installed and positioned. The diode is pre-connected to a pair of metal conductive terminals. The multi-protrusion structure design of the metal conductive terminals improves the stability of the electrical connection between the diode and the cable, further enhancing the long-term stability of the junction box and reducing the probability of failure. Attached Figure Description

[0024] Figure 1 is a schematic diagram of the internal structure of this box;

[0025] Figure 2 is a schematic diagram of the connection between the metal conductive terminal and the diode.

[0026] Figure 3 is a three-dimensional structural diagram of a metal conductive terminal;

[0027] Figure 4 is a three-dimensional structural diagram of the connection state between the metal conductive terminal and the cable;

[0028] Figure 5 is a three-dimensional structural diagram of the connection between the box body and the box lid;

[0029] In the diagram, 100 represents the housing, 110 is the cable threading hole, and 120 is the wire clamping block.

[0030] 200 is the support base, 210 is the positioning post, and 220 is the positioning plate.

[0031] 300 is a metal conductive terminal, 310 is a positioning hole, 320 is the first boss, and 330 is the second boss.

[0032] 400 is a diode.

[0033] 500 is a cable.

[0034] 600 is the overflow container.

[0035] 700 is the lid. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0037] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "vertical," "horizontal," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] The present invention will now be described with reference to Figures 1-5;

[0040] Perovskite module junction box, including:

[0041] The box body 100 has a cable threading hole 110 on the side;

[0042] The support base 200 is fixedly disposed inside the housing 100 and is provided with a diode mounting position and a pair of terminal mounting positions;

[0043] The support base 200 is provided with a suspended frame extending towards the tail of the box 100 (the side away from the cable hole 110), which is adapted to the tail end of the metal conductive terminal 300 to improve the stability of the installation of the metal conductive terminal 300; in this case, the suspended frame has a T-shaped structure, which reduces the manufacturing cost while ensuring the support strength requirements.

[0044] A pair of metal conductive terminals 300 are provided, each set in a corresponding terminal mounting position; each metal terminal is connected to the busbar led out from the perovskite photovoltaic module; the metal conductive terminals 300 and the housing 100 can be fixed by cold riveting or hot riveting.

[0045] The terminal mounting position is provided with a positioning post 210;

[0046] The metal conductive terminal 300 is provided with a positioning hole 310 that is adapted to the positioning post 210.

[0047] The terminal mounting position is provided with a plurality of positioning plates 220 for limiting the metal conductive terminal 300.

[0048] In this case, there are two positioning plates 220, and one metal conductive terminal 300 on each of the left and right sides, which confines the metal conductive terminal 300 between the two positioning plates 220.

[0049] The top of the positioning plate 220 is chamfered to facilitate the efficient insertion of the metal conductive terminal 300 into the terminal mounting position.

[0050] Diode 400, serving as bypass protection, is located at the diode mounting position, with its two leads electrically connected to the bottom surface of the corresponding metal conductive terminal 300. The metal conductive terminal 300 has a first protrusion 320 for contacting the diode 400, improving the reliability and stability of the lead connection. In this design, the metal conductive terminal 300 and the diode 400 are connected by resistance welding or soldering.

[0051] The diode 400 is located in the middle of the housing, and the pin of the diode 400 is located below the metal conductive terminal 300, which helps to reduce the height of the housing and meet the trend of miniaturization.

[0052] The bottom of the cable pass-through hole 110 is hollowed out, and the cable is secured inside the cable pass-through hole 110 by a detachable and fixed clamping block 120. The cable is connected to the metal conductive terminal 300 by resistance welding or riveting. The clamping block 120 is fixedly connected to the housing 100 by ultrasonic welding, thereby pressing and fixing the cable placed in the middle.

[0053] The front end of the metal conductive terminal 300 is provided with a second protrusion 330 for electrical connection with the cable 500.

[0054] In this case, the first protrusion 320 and the diode pin connection surface are on the same plane; the second protrusion 330 and the cable connection surface are also on the same plane.

[0055] The inner wall of the box body 100 is provided with an overflow container 600 with a top opening;

[0056] The top surface of the overflow container 600 is lower than the top surface of the box body 100. When excessive silicone is poured in, the excess silicone will flow into the overflow container 600. The surface of the silicone is within a controllable range, so as not to affect the assembly of the upper box cover 700.

[0057] The top surface of the box body 100 is provided with a detachable and fixedly connected box cover 700.

[0058] The cable threading hole 110 is provided in a pair, namely a positive terminal threading hole and a negative terminal threading hole.

[0059] The cable is electrically connected to the metal conductive terminal 300 through the cable threading hole 110.

[0060] Regarding the information disclosed in this case, the following points need to be clarified:

[0061] (1) The accompanying drawings of the embodiments disclosed in this case only involve the structures involved in the embodiments disclosed in this case; other structures can refer to the general design.

[0062] (2) Where there is no conflict, the embodiments and features disclosed in this case can be combined with each other to obtain new embodiments;

[0063] The above are merely specific embodiments disclosed in this case, but the scope of protection of this disclosure is not limited thereto. The scope of protection disclosed in this case shall be determined by the scope of protection of the claims.

Claims

1. A perovskite module junction box, characterized in that, include: The housing (100) has a cable threading hole (110) on its side; the support base (200) is fixedly installed inside the housing (100) and has a diode mounting position and a pair of terminal mounting positions; a pair of metal conductive terminals (300) are provided and are respectively installed on the corresponding terminal mounting positions; the diode (400) is located at the diode mounting position and its two ends are electrically connected to the bottom surface of the corresponding metal conductive terminal (300); the metal conductive terminal (300) has a first protrusion (320) for attaching with the diode (400).

2. The perovskite module junction box according to claim 1, characterized in that, The bottom of the cable threading hole (110) is hollowed out, and the cable is secured in the cable threading hole (110) by a fixedly connected pressure block (120).

3. The perovskite module junction box according to claim 1, characterized in that, The terminal mounting position is provided with a positioning post (210); the metal conductive terminal (300) is provided with a positioning hole (310) that is adapted to the positioning post (210).

4. The perovskite module junction box according to claim 1 or 3, characterized in that, The terminal mounting position is provided with a plurality of positioning plates (220) for limiting the position of the metal conductive terminal (300).

5. The perovskite module junction box according to claim 4, characterized in that, The top of the positioning plate (220) is chamfered.

6. The perovskite module junction box according to claim 1, characterized in that, The front end of the metal conductive terminal (300) is provided with a second protrusion (330) for electrical connection with the cable (500).

7. The perovskite module junction box according to claim 1, characterized in that, The inner wall of the box (100) is provided with an overflow container (600) with a top opening; the top surface of the overflow container (600) is lower than the top surface of the box (100).

8. The perovskite module junction box according to claim 1, characterized in that, The top surface of the box body (100) is provided with a fixedly connected box cover (700).

9. The perovskite module junction box according to claim 1, characterized in that, The cable threading hole (110) is provided in a pair, namely a positive terminal threading hole and a negative terminal threading hole.

10. The perovskite module junction box according to claim 9, characterized in that, The cable is electrically connected to the metal conductive terminal (300) through the cable thread hole (110).

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