An isolation diode mounting module for a low-orbit satellite solar array

Abstract

An isolation diode installation module for a low-orbit satellite solar array includes: a base film for installing a welding module; a welding module for installing an isolation diode; two welding modules are relatively arranged on the base film, and the two ends of the isolation diode are respectively connected to the welding modules on the corresponding sides. The isolation diode installation module for a low-orbit satellite solar array provided by the present application solves the problem of high operating temperature of the isolation diode and ensures the reliability of the application of the isolation diode; in view of the low-orbit orbit environment, while ensuring the control of the isolation diode temperature, the thermodynamic deformation of the isolation diode module is considered and corresponding measures are provided.

Description

Technical Field

[0001] The invention belongs to the technical field of solar cell arrays, and in particular relates to an isolation diode mounting module for a low-orbit satellite solar cell array. Background Art

[0002] Solar cells are distributed on the surface of the solar array substrate to convert light energy into electrical energy to power the satellite. Since the front of the solar panel is covered with solar cells, the circuit routing of the solar cells needs to be completed on the back of the solar panel. The circuits in the same sub-array of the solar array are interconnected. In order to improve the overall reliability of the solar array, the same sub-array is divided into small unit circuits, which need to be isolated by isolation diodes.

[0003] Solar arrays work in a vacuum environment and directly in outer space. Taking into account the size, heat, mechanics, etc., it is not feasible to implement active temperature control. Therefore, only appropriate thermal design can be carried out to reduce the failure caused by the thermal environment.

[0004] Since the isolation diode has diode characteristics, it will generate heat during the power supply process of the circuit. The main ways of heat transfer in space are heat conduction and heat radiation, which is very important for the temperature control of the isolation diode. Summary of the invention

[0005] In order to solve the above problems, the present invention provides an isolation diode mounting module for a low-orbit satellite solar array, comprising:

[0006] Base membrane for mounting welding modules;

[0007] The welding module is used to install the isolation diode; the two welding modules are arranged on the base film opposite to each other, and the two ends of the isolation diode are respectively connected to the welding modules on the corresponding sides.

[0008] Preferably, the base film is made of polyimide material.

[0009] Preferably, the welding module is a silver foil circuit board, and the isolation diode is connected to the silver foil circuit board.

[0010] Preferably, the isolation diode is connected to the silver foil circuit board by soldering.

[0011] Preferably, a welding hole is provided on the silver foil circuit board, and the solder is formed in the welding hole and connected to the isolation diode.

[0012] Preferably, the surface of the silver foil circuit board is coated with protective glue.

[0013] Preferably, the silver foil circuit board is arranged in a "J" shape on the base film.

[0014] Preferably, the distance between two adjacent welding modules is greater than or equal to 13 mm.

[0015] Preferably, the distance between two adjacent welding holes is greater than or equal to 23 mm.

[0016] The present application provides an isolation diode installation module for a low-orbit satellite solar array, which solves the problem of high operating temperature of the isolation diode and ensures the reliability of the isolation diode application. In view of the low-orbit orbit environment, while ensuring the control of the isolation diode temperature, the thermodynamic deformation of the isolation diode module is taken into consideration and corresponding measures are provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a structural schematic diagram of an isolation diode mounting module for a low-orbit satellite solar array provided by the present invention;

[0019] Figure 2 It is a structural schematic diagram of an isolation diode mounting module for a low-orbit satellite solar array provided by the present invention;

[0020] Figure 3 It is a model front temperature cloud diagram of a module for installing an isolation diode for a solar cell array of a low-orbit satellite provided by the present invention, which is in a power supply state on the summer solstice;

[0021] Figure 4 A temperature cloud diagram of the back side of a model of an isolation diode installation module for a low-orbit satellite solar array provided by the present invention, which is in a power supply state on the summer solstice;

[0022] Figure 5 It is a model front temperature cloud diagram of an isolation diode installation module for a low-orbit satellite solar array provided by the present invention in a shunt state on the summer solstice;

[0023] Figure 6 A temperature cloud diagram of the back side of a model of an isolation diode installation module for a low-orbit satellite solar array provided by the present invention in a shunt state on the summer solstice;

[0024] Figure 7 It is a model front temperature cloud diagram of a module for installing an isolation diode for a solar cell array of a low-orbit satellite provided by the present invention, which is in a power supply state on the summer solstice;

[0025] Figure 8 A temperature cloud diagram of the back side of a model of an isolation diode installation module for a low-orbit satellite solar array provided by the present invention, which is in a power supply state on the summer solstice;

[0026] Fig. 9 It is a model front temperature cloud diagram of an isolation diode installation module for a low-orbit satellite solar array provided by the present invention in a shunt state on the summer solstice;

[0027] Fig.10 The invention provides a temperature cloud diagram of the back side of a model of an isolation diode installation module for a low-orbit satellite solar array in a shunt state on the summer solstice. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0029] like Figure 1-2 In an embodiment of the present application, the present invention provides an isolation diode mounting module for a low-orbit satellite solar array, comprising:

[0030] A base film 1, used for mounting a welding module 2;

[0031] The welding module 2 is used to install the isolation diode; the two welding modules 2 are arranged on the base film 1 opposite to each other, and the two ends of the isolation diode are respectively connected to the welding modules 2 on the corresponding sides.

[0032] In the embodiment of the present application, the base film 1 is made of polyimide material.

[0033] In the embodiment of the present application, the welding module 2 is a silver foil circuit board, and the isolation diode is connected to the silver foil circuit board.

[0034] In an embodiment of the present application, the isolation diode is connected to the silver foil circuit board by soldering.

[0035] In the embodiment of the present application, a welding hole is provided on the silver foil circuit board, and the solder is formed in the welding hole and connected to the isolation diode.

[0036] In the embodiment of the present application, the surface of the silver foil circuit board is coated with protective glue.

[0037] In the embodiment of the present application, the silver foil circuit board is arranged on the base film 1 in a “J” shape.

[0038] In the embodiment of the present application, the distance between two adjacent welding modules 2 is greater than or equal to 13 mm.

[0039] In an embodiment of the present application, the distance between two adjacent welding holes is greater than or equal to 23 mm.

[0040] In an embodiment of the present application, the present invention provides an isolation diode mounting module for a low-orbit satellite solar array, which is composed of two parts, namely a base film 1 and two welding modules 2. The positive pole of each unit circuit will be connected to the welding module 2 at one end of the isolation diode mounting module, and connected to the welding module 2 by soldering. The welding module 2 is a silver foil circuit board. The two ends of the isolation diode are connected to the silver foil circuit board by soldering through the welding holes of the silver foil circuit board on the isolation diode mounting module. The positive pole of the entire sub-array will be connected to the welding module 2 at the other end of the isolation diode mounting module by soldering.

[0041] In the embodiment of the present application, the function of the welding module 2 is to realize the connection of the circuit and the connection of the line by welding the isolation diode and the wire.

[0042] In the embodiment of the present application, the configuration of the silver foil circuit board is that a rectangular silver foil is pressed into two connected "J" shapes by tooling, and the "J" shape structure can facilitate the production of welding holes. Due to the high number of temperature alternations in the low orbit environment, the "J" shape structure can resist the structural contraction or expansion caused by thermal alternation.

[0043] In the embodiment of the present application, the silver foil circuit board is made of a 0.1 mm thick silver foil sheet, which is pressed by tooling and then holes are opened.

[0044] In the embodiment of the present application, the distance between two adjacent welding holes is greater than or equal to 23 mm, so as to reduce the influence of the mutual temperature of the two parallel diodes when they are working.

[0045] In the embodiment of the present application, depending on the ambient temperature, appropriately increasing the area of ​​the silver foil circuit board can effectively reduce the operating temperature of the diode.

[0046] In the embodiment of the present application, the installation position of the wires of the silver foil circuit board can be adjusted according to the number of holes in the wiring and evenly distributed on the "J"-shaped structure.

[0047] In the embodiment of the present application, the distance between the two silver foil circuit boards is designed according to the size of the commonly used tube leg type isolation diode. The distance between the two silver foil circuit boards is 13 mm, which can be appropriately adjusted according to the size of the tube leg type isolation diode to facilitate the installation of the diode.

[0048] like Figure 3-10Through simulation analysis, the base film 1 of the isolation diode module uses a 0.125mm thick polyimide film. The size of the base film 1 is not fixed and can be adjusted according to the size of the silver foil circuit board actually used. The outer dimensions of the base film 1 should be at least 5mm larger than the outer dimensions of the two silver foil circuit boards after installation. The main purpose is to prevent the silver foil circuit board from short-circuiting with the substrate and to ensure the spacing between adjacent isolation diode modules. The thickness of the polyimide film must be selected to ensure that it does not affect the heat transfer from the silver foil circuit board to the solar wing substrate while controlling the heat conduction rate from the silver foil circuit board to the solar wing substrate, acting as an insulation pad. In view of the low-orbit orbit environment, a simulation analysis of the isolation diode installation module for the developed low-orbit satellite solar array is carried out. The result cloud map is as follows Figure 3-10 shown.

[0049] Simulation calculation results show that the isolation diode installation module for a low-orbit satellite solar array provided in this application meets the use requirements under various working conditions at the beginning and end of its life.

[0050] The present application provides an isolation diode installation module for a low-orbit satellite solar array, which solves the problem of high operating temperature of the isolation diode and ensures the reliability of the isolation diode application. In view of the low-orbit orbit environment, while ensuring the control of the isolation diode temperature, the thermodynamic deformation of the isolation diode module is taken into consideration and corresponding measures are provided.

[0051] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. An isolation diode mounting module for a low-orbit satellite solar array, characterized in that: include: Base membrane for mounting welding modules; The base film is made of polyimide material; Soldering module for mounting isolation diodes; The two welding modules are arranged on the base film opposite to each other, and the two ends of the isolation diode are respectively connected to the welding modules on the corresponding sides; The welding module is a silver foil circuit board, and the isolation diode is connected to the silver foil circuit board; The isolation diode is connected to the silver foil circuit board via soldering; The surface of the silver foil circuit board is coated with protective glue; The silver foil circuit board is arranged on the base film in a "J" shape; The silver foil circuit board is provided with a welding hole, and the solder is formed in the welding hole and connected to the isolation diode.

2. The isolation diode mounting module for a low-orbit satellite solar array according to claim 1, characterized in that: The distance between two adjacent welding modules is greater than or equal to 13 mm.

3. The isolation diode mounting module for a low-orbit satellite solar array according to claim 1, characterized in that: The distance between two adjacent welding holes is greater than or equal to 23 mm.

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