Photovoltaic module with reduced terminals
By designing photovoltaic components with reduced terminals, using laminates and frame assembly, eliminating unnecessary junction boxes and cables, and using unified box bases and connectors, the problems of high production costs and difficult maintenance of existing photovoltaic components are solved, and the problem of high production costs and difficult maintenance is achieved. It can reduce costs and improve maintenance efficiency.
Patent Information
- Application Number
- CN202420709017.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-08
AI Technical Summary
Due to the excess junction boxes and cables, existing photovoltaic modules have high production costs, difficulty in repair and cannot achieve large-scale mass production.
Design a photovoltaic component that reduces terminals, uses laminates and frames to form an assembly, the junction box base is welded on the component backglass through bus bars, cancels the chip module and external cables, and uses a unified wire box base and connectors. Test, integrated diodes for easy maintenance.
It reduces production and maintenance costs, simplifies component structure, reduces the probability of failure and inventory types, and improves fault tolerance and maintenance efficiency.
Smart Images
Figure CN222192296U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the design field of photovoltaic components, in particular to a photovoltaic component with reduced terminals. Background Art
[0002] As the overcapacity of photovoltaic production in 2023 triggered a trend of price cuts, photovoltaic enterprises were in a serious state of internal competition, and cost reduction and efficiency improvement became the main theme of photovoltaic enterprises. Reducing the number of accessories is the most direct way to reduce costs.
[0003] Conventional modules usually have three junction boxes, left, middle and right, with cables and positive and negative connection terminals attached to the left and right. The cables are mostly of specified length by customers, which makes it impossible to mass-produce finished modules. The module junction box is a fragile part, and most of the junction boxes on the market have chips on the base. To replace them, the entire junction box needs to be removed, which is laborious and time-consuming. Utility Model Content
[0004] In view of the problems existing in the above-mentioned prior art, the utility model provides a photovoltaic component with reduced terminals and a manufacturing method thereof in order to reduce the manufacturing cost of the component and facilitate subsequent maintenance.
[0005] In order to achieve the above purpose, the utility model adopts the following technical utility models:
[0006] A photovoltaic module with reduced terminals, characterized in that the photovoltaic module comprises: a laminate and a frame; the laminate and the frame form an assembly, and a junction box base is arranged on the assembly; the junction box base and the assembly are welded to the module back glass or back plate of the assembly through bus bar lead wires, and an intermediate wire box cover is installed on the junction box base to complete the finished module; when networking, the finished modules are connected in pairs through connectors.
[0007] Furthermore, the laminate and the frame are assembled together by means of frame sealant.
[0008] Furthermore, the laminate includes a cell, a packaging film, a photovoltaic glass, and a backplane; the cell is welded and then packaged in a sandwich of glass and backplane. The glass backplane is mainly responsible for external force protection, and the film is responsible for isolating air and water.
[0009] Furthermore, the height of the junction box base is less than or equal to 20 mm, there is no chip module, no external cables and terminal connectors, and the structures of the three junction boxes on the left, middle and right sides set in the photovoltaic module are the same.
[0010] Furthermore, the photovoltaic module also includes a test tool, which includes two connectors: a positive connector and a negative connector. The positive connector and the negative connector have the same structure of the upper cover of the wire box and the cable; the positive connector includes the upper cover of the wire box, the cable and the positive connection terminal in sequence; the negative connector includes the upper cover of the wire box, the cable and the negative connection terminal in sequence; when the module needs to be tested, the positive and negative connections are respectively installed on both sides of the finished module, which can be equivalent to the test of conventional modules.
[0011] The beneficial effects of the utility model compared with the prior art are:
[0012] 1. Compared with conventional utility models, each component of the utility model has one less pair of positive and negative connector terminals and cables, which reduces costs; since there are no connecting terminals and cables, there will be no problems such as cable scraping the wire body, which reduces process difficulties;
[0013] 2. The utility model has no distinction between positive and negative poles in the base of the wire box, and can be purchased in a unified manner, thereby reducing procurement costs and inventory costs. The fact that the base of the wire box has no distinction between positive and negative poles reduces the probability of defects, improves the fault tolerance rate, and reduces production costs.
[0014] 3. The utility model component itself has no cables, and the non-standard cable lengths of ODM orders can be produced without distinction, which reduces the types of non-standard components and reduces operating costs;
[0015] 4. The connector of the utility model integrates a diode, and when the diode fails, it can be directly replaced without repairing the component, thereby reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of a finished component in a photovoltaic component with reduced terminals in the utility model;
[0017] Figure 2 This is a schematic structural diagram of a centerline box base of a photovoltaic assembly with reduced terminals in the utility model;
[0018] Figure 3 It is a structural schematic diagram of the assembly of a connector and a finished component in a photovoltaic component with reduced terminals in the utility model;
[0019] Figure 4 This is a schematic structural diagram of a connector in a photovoltaic module with reduced terminals in the utility model;
[0020] Figure 5 This is a schematic structural diagram of an intermediate wire box cover in a photovoltaic assembly with reduced terminals in the utility model;
[0021] Figure 6It is a structural schematic diagram of a positive electrode connector in a photovoltaic module with reduced terminals in the utility model;
[0022] Figure 7 It is a structural schematic diagram of a negative electrode connector in a photovoltaic module with reduced terminals in the utility model;
[0023] Among them, 1-laminate, 2-frame, 3-junction box base, 4-connector, 5-middle junction box cover, 6-junction box upper cover, 7-cable, 8-positive pole connection terminal, 9-negative pole connection terminal. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical utility model and effect of the utility model clearer and more specific, the following examples are given to further explain the utility model in detail. It should be noted that the specific implementation described here is only used to explain the utility model, and is not used to limit the utility model.
[0025] like Figures 1 to 7 As shown, the photovoltaic component of the utility model includes: a laminate 1, a frame 2; the laminate 1 and the frame 2 form an assembly through a frame sealant, and a junction box base 3 is arranged on the assembly; the junction box base 3 and the assembly are welded to the component back glass or back plate of the assembly through bus bar lead wires, and an intermediate wire box cover 5 is installed on the junction box base 3 to complete the finished component; when networking, the finished components are connected in pairs through connectors 4.
[0026] The laminate 1 includes solar cells, packaging film, photovoltaic glass, and a backplane; the junction box base 3 has a box body height of less than or equal to 20 mm, no chip modules, no external cables and terminal connectors, and the structures of the three left, middle, and right junction boxes set in the photovoltaic module are the same.
[0027] The photovoltaic assembly also includes a test tool, which includes two connectors: a positive connector and a negative connector. The positive connector and the negative connector have the same structure as the upper cover 6 and cable 7 of the wire box; the positive connector includes the upper cover 6, cable 7 and positive connection terminal 8 in sequence; the negative connector includes the upper cover 6, cable 7 and negative connection terminal 9 in sequence; when the assembly needs to be tested, the positive and negative connections are respectively installed on both sides of the finished assembly, which can be equivalent to the test of conventional assemblies.
[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.
Claims
1. A photovoltaic module with reduced terminals, characterized in that: The photovoltaic module comprises: a laminate (1) and a frame (2); the laminate (1) and the frame (2) form an assembly, and a junction box base (3) is arranged on the assembly; the junction box base (3) and the assembly are welded to the module back glass or back plate of the assembly through busbar lead wires, and an intermediate wire box cover (5) is installed on the junction box base (3) to complete the finished module; when networking, the finished modules are connected in pairs through connectors (4).
2. A photovoltaic module with reduced terminals according to claim 1, characterized in that: The laminate (1) and the frame (2) are assembled together by means of frame sealant.
3. A photovoltaic module with reduced terminals according to claim 1, characterized in that: The junction box base (3) has a box body height of less than or equal to 20 mm, has no chip module, no external cables and terminal connectors, and has the same structure as the left, middle and right junction boxes arranged in the photovoltaic module.
4. A photovoltaic module with reduced terminals according to claim 1, characterized in that: The photovoltaic assembly also includes a test fixture, which includes two connectors: a positive connector and a negative connector. The positive connector and the negative connector have the same structure of a wire box upper cover (6) and a cable (7). The positive connector includes a wire box upper cover (6), a cable (7) and a positive connection terminal (8) in sequence; the negative connector includes a wire box upper cover (6), a cable (7) and a negative connection terminal (9) in sequence. When the assembly needs to be tested, the positive and negative connectors are respectively installed on both sides of the finished assembly, which can be equivalent to the test of a conventional assembly.