An assembly method of high-power planar transformer
A planar transformer, high-power technology, used in the manufacture of inductors/transformers/magnets, electrical components, circuits, etc., can solve the problems affecting the reliability of satellite power sources, cannot effectively ensure heat dissipation, insulation, etc., to achieve standardization of the production process, power density The effect of increasing and ensuring the insulation withstand voltage performance
Active Publication Date: 2016-08-24
BEIJING SATELLITE MFG FACTORY
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Problems solved by technology
[0004] Due to the special environment of launching and in-orbit aerospace products, conventional magnetically surrounded enameled wire transformers and civilian planar transformers cannot effectively guarantee their heat dissipation, insulation and other performance requirements in the normal working environment of aerospace, which in turn affects the reliability of the entire satellite power supply
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[0025] Such as Figure 1-Figure 5 As shown, the high-power planar transformer includes a ferrite core composed of upper and lower magnetic cores, namely upper magnetic core 5 and lower magnetic core 6, a printed circuit board 7 and a multilayer insulating film 8; the structure of the ferrite magnetic core is The plane is E-shaped, which is an EI pairing form. There are two windows A1 on the ferrite core, and the boss 2 is formed between the two windows A1; the printed circuit board 7 is a multi-layer printed board, and the printed circuit board 7 adopts Made of FR4 base material, the conductive layer in the printed circuit board 7 uses copper foil as the transformer winding, and the printed circuit board 7 has electrical connection holes 4; the insulating film 8 is made of polyimide material; the printed circuit board 7 and the insulation There is a window B3 at the central position of the film 8, and the window B3 matches the boss 2 on the ferrite core.
[0026] A method for...
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The invention relates to an assembly method of a high-power planar transformer, belonging to the technical field of electronic assembly. According to the method of the present invention, the front and back of the printed circuit board are painted, and then the printed circuit board is filled with the window of the ferrite core in the manner of stacking the printed circuit board and the insulating film, which not only ensures the insulation of the entire transformer index, and can also meet the heat dissipation requirements under vacuum conditions; the method of the present invention adopts multi-layer PCB board stacking, winding integration and through-hole welding of electrical connection parts, so that the transformer is highly integrated, the power density is increased, and the manufacturing process is standardized. In addition, brush the front and back sides of the PCB board with insulating paint and add an insulating film between the PCB boards and between the PCB board and the magnetic core to ensure the insulation withstand voltage performance, the magnetic core window is completely filled and the internal structure is completely in close contact to ensure a good heat dissipation channel in working condition The method of equal assembly meets the requirements for the use of aerospace power supplies.
Description
technical field [0001] The invention relates to a method for assembling a high-power planar transformer. High power refers to a power above 50W, and especially relates to a method for highly reliable assembling of a high-power planar transformer in an electronic stand-alone DC-DC converter for aerospace, which belongs to the electronic assembly technology field. Background technique [0002] With the development of aerospace technology, great changes have taken place in the power supply and distribution systems of satellites and aerospace vehicles. The traditional centralized power supply mode of the chassis is gradually transitioning to the decentralized module power supply mode. The module power supply has been used in the power supply of satellites and aerospace vehicles. has been very widely used. The module power supply is characterized by small size and high power. Therefore, the development of a module power supply for satellites and space vehicles needs to optimize ...
Claims
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IPC IPC(8): H01F41/00
Inventor 任凭高战地王宁宁杨猛陈雅容张彬彬
Owner BEIJING SATELLITE MFG FACTORY