Assembly method for high-power planar transformer
A planar transformer and high-power technology, applied in the manufacture of inductors/transformers/magnets, electrical components, circuits, etc., can solve problems that affect the reliability of satellite power supplies, cannot effectively ensure heat dissipation, insulation, etc., and achieve standardized manufacturing processes and high power density The effect of increasing and ensuring the insulation withstand voltage performance
Active Publication Date: 2014-12-10
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, the conventional magnetic surround 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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Abstract
The invention relates to an assembly method for a high-power planar transformer and belongs to the technical field of electronic assembly. According to the method, the front side and the back side of each printed circuit board are brushed with paint, then, a window of a ferrite core is filled with the printed circuit boards according to the stacking mode of the printed circuit boards and insulating films, and therefore not only is the insulating index of the whole transformer guaranteed, but also the heat dissipation requirement under a vacuum condition can be met. According to the method, due to the mode that the multiple layers of PCBs are stacked, windings are integrated and electrical connection parts are welded through through holes, the transformer can be highly integrated, power density is increased, and the manufacturing process can be standardized. Besides, according to the assembly method for heat dissipation channels and the like, because the front side and the back side of each printed circuit board are brushed with insulating paint before the PCBs are stacked, and the insulating films are additionally arranged between the PCBs and between the PCBs and the magnetic core, the insulating property and the pressure-resistant property are guaranteed; the window of the magnetic core is totally filled with the PCBs and the internal structures of the window of the magnetic core totally make close contact, it is guaranteed that the working state is good, and the using requirement of an astronavigation power source is met.
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