Solar wing power supply path short-circuit protection device based on safe operation

Abstract

The invention relates to a solar wing power supply circuit short-circuit protection device based on safe operation, and belongs to the field of reliability and safety of a spacecraft power supply system. The device comprises a confluence short circuit path which is used for being connected with a solar wing regulator power end output electric connector, and positive and negative electric connection points on the solar wing regulator power end output electric connector are subjected to short circuit protection; and the branch short circuit path is used for being connected with a solar wing power end branch output electric connector and carrying out short circuit protection on an electric connection point of a positive branch and an electric connection point of a negative branch of the solar wing power end. And finally, the safety of on-orbit personnel and equipment is guaranteed when the power channel of the aircraft power supply is disconnected.

Description

Technical Field

[0001] The invention relates to a short-circuit protection device for a solar wing power supply path based on safe operation, and belongs to the field of reliability and safety of a spacecraft power supply system. Background Art

[0002] According to the reliability FMEA analysis of the space station power supply system, the probability of equipment failure will gradually increase with the increase of operating time of the power transmission equipment in the power supply system during the in-orbit operation phase.

[0003] In order to ensure that when the power supply system fails during the on-orbit operation phase, the normal operation of the power supply system can still be guaranteed by replacing the faulty equipment. During the replacement of the faulty equipment, the exposed voltage at the power output end of the solar wing must be ensured to be safe for equipment and personnel. Therefore, it is necessary to provide a device that forms a power circuit with the power output end of the solar wing to ensure the safety of personnel and equipment during system maintenance operations. Summary of the invention

[0004] The technical problem solved by the present invention is to overcome the deficiencies of the prior art and provide a solar wing power supply path short-circuit protection device based on safe operation, so as to form a power loop at the power output end of the solar wing and ensure the safety of personnel and equipment during system maintenance operations.

[0005] The technical solution of the present invention is: a short-circuit protection device for a solar wing power supply path based on safe operation, the short-circuit protection device comprises a busbar short-circuit path and a branch short-circuit path;

[0006] A current-collecting short-circuit path is used to connect to the output electrical connector of the solar wing regulator power end, and the positive and negative electrical connection points on the output electrical connector of the solar wing power end are short-circuit protected;

[0007] The branch short-circuit path is used to connect to the branch output electrical connector of the solar wing power end, and to provide short-circuit protection for the electrical connection points of the positive branch and the negative branch of the solar wing power end.

[0008] Preferably, the busbar short-circuit path and the branch short-circuit path both include a base, an electrical connector, a busbar copper plate, and insulating protection parts;

[0009] The busbar is insulated and installed with the electrical connector base through insulating protection parts;

[0010] One end of the copper sheet on the copper bar on the copper busbar is connected together, and the other end is connected to the electrical connector node on the electrical connector in a one-to-one correspondence manner using a wire.

[0011] Preferably, the surface of the copper bus plate is gold-plated.

[0012] Preferably, the insulating protection part is made of epoxy glass cloth laminate material.

[0013] Preferably, protective covers are respectively installed on the base of the busbar short-circuit path electrical connector and the base of the branch short-circuit path electrical connector. The protective covers are designed with mounting snap-ons that cooperate with the notches on the base. The base is made of aluminum alloy and the protective covers are made of elastically deformable material. When in use, the protective covers are pressed by hand to produce elastic deformation, and the protective covers are separated from the mounting base.

[0014] Preferably, the elastically deformable configuration component of the protective cover is designed to prevent errors, so as to achieve the uniqueness of the installation positions of the two protective covers.

[0015] Preferably, the electrical connectors are arranged crosswise on the base.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The solar wing power supply path short-circuit protection device based on safe operation of the present invention can short-circuit the solar wing power channel after disconnecting it during the aircraft operation phase, ensuring that the solar wing and the power supply equipment are not damaged during the maintenance phase;

[0018] (2) The solar wing power supply path short-circuit protection device based on safe operation of the present invention short-circuits the power path of the solar wing output end according to the maintenance position of the power channel when a device fails on the power transmission path of the power supply.

[0019] (3) The solar wing power supply path short-circuit protection device based on safe operation of the present invention is used in the maintenance stage. When a power path failure occurs in the power supply system, the operator can effectively and safely complete the relevant maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1( a ) is a schematic diagram of the side appearance of a solar wing power supply path short-circuit protection device based on safe operation of the present invention.

[0021] FIG1( b ) is a schematic diagram of the top appearance of the solar wing power supply path short-circuit protection device based on safe operation of the present invention.

[0022] Figure 2 It is a schematic diagram of the short-circuit path panel of the solar wing power supply path short-circuit protection device based on safe operation of the present invention.

[0023] Figure 3 It is a schematic diagram of a branch short-circuit path panel of a solar wing power supply path short-circuit protection device based on safe operation of the present invention.

[0024] FIG. 4( a ) is a top view of the installation of the short-circuit path components of the solar wing power supply path short-circuit protection device based on safe operation of the present invention.

[0025] FIG4( b ) is a side view of the installation of the short-circuit path assembly of the solar wing power supply path short-circuit protection device based on safe operation of the present invention.

[0026] Figure 5 It is a schematic diagram of the anti-error design of the protective cover of the solar wing power supply path short-circuit protection device based on safe operation of the present invention.

[0027] Figure 6 It is a working schematic diagram of the solar wing power supply path short-circuit protection device based on safe operation of the present invention.

[0028] FIG. 7( a ) is a schematic diagram of the upper portion of the busbar of the short-circuit protection device for the solar wing power supply path based on safe operation of the present invention;

[0029] FIG7( b ) is a schematic diagram of the middle portion of the busbar of the short-circuit protection device for the solar wing power supply path based on safe operation of the present invention;

[0030] FIG7( c ) is a schematic diagram of the installation of the busbar of the short-circuit protection device for the solar wing power supply path based on safe operation of the present invention;

[0031] Figure 8 This is a schematic diagram of the design of the external dimensions of the busbar of the solar wing power supply path short-circuit protection device based on safe operation of the present invention;

[0032] Fig. 9 This is a schematic diagram of the system status before the solar wing power supply path short-circuit protection device based on safe operation of the present invention is applied

[0033] Fig.10 This is an application principle diagram of the branch short-circuit path of the solar wing power supply path short-circuit protection device based on safe operation of the present invention.

[0034] Fig.11 This is a schematic diagram of the application principle of the solar wing power supply path short-circuit protection device based on safe operation of the present invention. DETAILED DESCRIPTION

[0035] The following will further describe in detail the implementation methods of the solar wing power supply path short-circuit protection device based on safe operation of the present invention in terms of installation layout, use, etc. in conjunction with the accompanying drawings.

[0036] As shown in Figure 1(a) and Figure 1(b), a solar wing power supply path short-circuit protection device based on safe operation includes a bus short-circuit path, a branch short-circuit path, a protective cover, and a handle; the short-circuit path component is arranged inside the short-circuit protection box and forms a short-circuit protection box as a whole with the electrical connector base; the handle is on one side of the short-circuit protection box, and the protective cover is located on the side of the short-circuit protection box 2.

[0037] The short-circuit bus path is used to conduct power bus with the solar wing power supply circuit in the regulator, and connect the power output electrical connector 9 after busing to the short-circuit bus panel electrical connector of the protection device to achieve short-circuit protection of the positive and negative electrical connection points on the solar wing power output electrical connector 9;

[0038] The branch short-circuit path is used to connect the power branch output electrical connectors of the solar wing and the branch short-circuit end panel electrical connector of the protection device, and to provide short-circuit protection for the electrical connection points of the positive branch and the negative branch of the solar wing power end.

[0039] The short-circuit protection box has two working states according to the short-circuit position of the power path: branch short-circuit protection and bus short-circuit protection.

[0040] Under branch short-circuit protection, the branch short-circuit mode is adopted to directly operate at the output end of each power branch of the solar wing, and the power generated by the solar wing is not converged, and only the positive and negative short-circuits are formed in the branch to form a loop;

[0041] Under the busbar short-circuit protection, the solar wing power supply circuit adopts the busbar short-circuit method after the power busbar output path device is operated in the regulator to short-circuit the positive and negative sides of the power path to form a power loop.

[0042] The electrical connector base is composed of two pieces to form a short-circuit protection box as a whole; one side of the configuration is a shunt short-circuit protection mode, and the other side is a confluence short-circuit protection mode. By selecting different usage methods, the two working modes can be adjusted.

[0043] The short-circuit path components include busbar paths and branch short-circuit paths, such as Figure 2 and Figure 3 shown.

[0044] The busbar passage includes: an electrical connector, a transmission cable, a busbar and an insulating protection part, wherein the transmission cable connects the electrical connector and the busbar to form a power transmission passage;

[0045] The branch short-circuit path includes: an electrical connector and a transmission cable, and the transmission cable is short-circuited and installed according to the branch setting to form a power transmission path. Figure 6 shown.

[0046] As shown in FIG. 4( a ) and FIG. 4( b ), in order to realize the short-circuit protection function and to meet the requirements of different protection situations, the busbar short-circuit path and the branch short-circuit path both include a base, an electrical connector 6 , a busbar copper plate 7 , and an insulating protection part 8 ;

[0047] The busbar 7 is insulated from the electrical connector base 4 by an insulating protection part 8 to ensure power supply safety.

[0048] One end of the copper sheet on the copper busbar on the copper busbar plate 7 is connected together, and the other end is connected to the electrical connector node on the electrical connector 6 with a wire in a one-to-one correspondence, and together with the insulating protection part 8, forms a short-circuit path for the copper busbar.

[0049] like Figure 7(a) to Figure 7(c) As shown, the copper bus plate 7 is compressed and wrapped by the insulating protection part 8 up and down to achieve the insulation installation with the electrical connector base 1. The size of the copper bus plate is as follows Figure 8 shown.

[0050] like Fig. 9 As shown, before the short-circuit protection device for the solar wing power supply path is applied, the system power channel is not disconnected. The power supply circuits of each power branch of the solar wing are connected to the regulator through an electrical connector, and the regulator internally converges each power branch and finally outputs the aircraft through the electrical connector.

[0051] like Fig.10 As shown, the branch short-circuit channel is applied as follows: the connecting electrical connectors between the power supply circuits of each power branch of the solar wing and the regulator are disconnected, and the output electrical connectors of each power branch of the solar wing are connected to the electrical connector of the branch short-circuit end panel of the protection device to achieve short-circuit protection of the electrical connection points of the positive branch and the negative branch of the solar wing power end.

[0052] like Fig.11 As shown, the application of the busbar short-circuit channel is as follows: the power supply circuits of the power branches of the solar wing are connected to the regulator through an electrical connector, the power branches are busbarized inside the regulator, and the busbar power electrical connector is connected to the busbar short-circuit end panel electrical connector of the protection device to achieve short-circuit protection for the positive and negative electrical connection points on the output electrical connector of the solar wing power end.

[0053] Preferably, the surface of the copper bus plate 7 is gold-plated.

[0054] Preferably, the insulating protection component 8 is made of epoxy glass cloth laminate material.

[0055] Preferably, protective covers are installed on the base of the busbar short-circuit path electrical connector and the base of the branch short-circuit path electrical connector respectively. The protective covers are designed with mounting snap-ons that cooperate with the notches on the base. The base is made of aluminum alloy and the protective covers are made of elastic deformation material. It is recommended to use polytetrafluoroethylene material, which is widely used in sealed cabins of spacecraft.

[0056] The electrical connectors are arranged crosswise on the base, which can reduce the volume and weight of the device while meeting the operational requirements.

[0057] When in use, the protective cover is pressed by hand to produce elastic deformation, and the protective cover is separated from the mounting seat. Elastic installation is achieved along one side of the electrical connector base, and the fixing with the electrical connector base is achieved through the configuration component with elastic deformation.

[0058] like Figure 5 As shown, the two protective covers adopt a structural anti-mistake design. Specifically, the protective cover has an elastically deformable configuration component that is designed to prevent mistakes, thereby achieving the uniqueness of the installation positions of the two protective covers.

[0059] The cross-sectional size of the mounting bracket of the busbar short-circuit protection cover 1 is 20mm×9mm, and the cross-sectional size of the mounting bracket of the branch short-circuit protection cover 2 is 18mm×9mm; at the same time, a 3mm×2mm boss is designed on the branch short-circuit protection cover 2, which structurally ensures the structural error-proofing between the two protection covers.

[0060] The handle is connected to the electrical connector base. When the short-circuit protection box is in use, the handle is opened for easy carrying and gripping. When stored, the handle is folded to reduce the storage space. The handle of the above-mentioned solar wing power supply path short-circuit protection device based on safe operation is in a folded state during the storage stage, which reduces the envelope volume and is easy to store. When in use, the handle can be opened and used for transportation. When the device is officially used, one side protective cover is first removed, and then the solar wing power end output electrical connector 9 is installed on the base electrical connector 6. After use, disconnect the solar wing power end output electrical connector 9, cover the protective cover, and fold back the handle storage device.

[0061] For the maintenance task of disconnecting the aircraft's power generation, the protection device provided by the present invention can still ensure the formation of an electrical circuit design after the solar wing power generation output path is disconnected, providing safety protection for the maintainability of on-orbit equipment and solving the technical problem of safety of on-orbit live operations.

[0062] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A short-circuit protection device for solar wing power supply path based on safe operation, characterized in that Including a busbar short-circuit path and a branch short-circuit path; A current-collecting short-circuit path is used to connect to a solar wing regulator power-end output electrical connector (9), and the positive and negative electrical connection points on the solar wing power-end output electrical connector (9) are short-circuit protected; The branch short-circuit path is used to connect to the branch output electrical connector of the solar wing power end, and to provide short-circuit protection for the electrical connection points of the positive branch and the negative branch of the solar wing power end.

2. A solar wing power supply path short-circuit protection device based on safe operation according to claim 1, characterized in that The busbar short-circuit path and the branch short-circuit path both include a base, an electrical connector (6), a busbar copper plate (7), and an insulating protection part (8); The busbar (7) is insulated and mounted on the electrical connector base (4) via an insulating protection part (8); One end of the copper sheet on the copper bar on the copper busbar (7) is connected together, and the other end is connected to the electrical connector node on the electrical connector (6) in a one-to-one correspondence using a wire.

3. A solar wing power supply path short-circuit protection device based on safe operation according to claim 1, characterized in that: The surface of the confluence copper plate (7) is gold-plated.

4. A solar wing power supply path short-circuit protection device based on safe operation according to claim 1, characterized in that: The insulating protection part (8) is made of epoxy glass cloth laminate material.

5. A solar wing power supply path short-circuit protection device based on safe operation according to claim 1, characterized in that: Protective covers are installed on the base of the busbar short-circuit path electrical connector and the base of the branch short-circuit path electrical connector respectively. The protective covers are designed with mounting snap-ons that match the notches on the base. The base is made of aluminum alloy and the protective covers are made of elastic deformation material. When in use, the protective covers are pressed by hand to produce elastic deformation, and the protective covers are separated from the mounting base.

6. A solar wing power supply path short-circuit protection device based on safe operation according to claim 5, characterized in that: The elastically deformable configuration component of the protective cover is designed to prevent errors, thereby achieving the uniqueness of the installation positions of the two protective covers.

7. A solar wing power supply path short-circuit protection device based on safe operation according to claim 5, characterized in that: The electrical connectors are arranged crosswise on the base.

Images