CN103762829B - A kind of modularized multiple out-put supply - Google Patents

Abstract

The invention belongs to the technical field of aerospace electronic product development, and in particular relates to a modular multi-channel output power supply. A modular multi-channel output power supply, its technical solution is that it includes: more than two output power supply modules (4) and equipment chassis (5); the printed circuit board of the power supply circuit is installed on the The inner surface of the vertical panel of the installation board (1), the circuit components of the power circuit are installed on the inner surface of the horizontal panel of the installation board (1), and the circuit board and the circuit components are connected by wires; output The power supply module (4) is installed in the equipment case (5), and the positioning boss (3) on it cooperates with the rectangular boss in the equipment case (5), and is fixed by screws. The invention optimizes the structure of the circuit installation assembly, satisfies the requirement of overall structure integration, and simultaneously satisfies the problem of heat dissipation of the power supply circuit and power components.

Description

A Modular Multiple Output Power Supply

technical field

The invention belongs to the technical field of aerospace electronic product development, and in particular relates to a modular multi-channel output power supply.

Background technique

The development of aerospace electronic equipment is limited by the use environment such as vacuum environment, temperature environment, mechanical vibration environment, and space radiation. When designing the structure of the equipment, various environmental factors must be covered; on the other hand, it is limited by weight and dimensions. , and the weight and dimensions must be strictly controlled; therefore, a reasonable layout and structural design must be carried out inside the equipment chassis to determine the equipment's shape, structure, internal circuit board components, and independently installed components and circuit connections. Aerospace power supply equipment is the basic guarantee for the work of electronic equipment on the planet. The simple single-channel or dual-channel power supply has a relatively simple structure, and the design of multi-channel power supply products can be divided into overall design ideas and modular design ideas. The overall design idea circuit Complicated, with many circuit connections, and many power components need to be installed on the equipment structure box, the overall layout is relatively difficult; the modular design idea is conducive to the inheritance of product technical solutions, and is convenient for manufacturing, generally as the preferred However, how to design the modular power supply circuit, how to take into account various design requirements and environmental factors, as well as the overall layout of the equipment is very important.

Contents of the invention

The purpose of the present invention is: on the premise of meeting the requirements of the special space environment, fully consider the manufacturing factors, optimize the structure of the circuit mounting components, meet the needs of the overall structure integration, and meet the heat dissipation problems of the power circuit and power components.

The technical solution of the present invention is: a modular multi-channel output power supply, which includes: more than two output power supply modules and equipment chassis;

The output power module includes: power circuit, installation board and thermal pad; the power circuit includes: printed circuit board and circuit components; the installation board is an L-shaped vertical bending panel structure, and the inner surface of the vertical part of the panel is printed The mounting surface of the circuit board, the inner surface of the horizontal part of the panel is the mounting surface of circuit components, and the outer surface of the vertical part of the panel is provided with positioning bosses, which are divided into three sections: horizontal section, vertical section and transition section , the horizontal section extends horizontally from one end of the vertical section panel to the other end, the lower surface of the horizontal section forms a right-angle positioning surface with the vertical section panel, the vertical section is located at one end of the horizontal section extension direction, and the vertical section is formed by the top edge of the vertical section panel Extending vertically downwards, the bottom surface of the vertical section and the end surface of the vertical panel are on the same plane, the transition section is located between the horizontal section and the vertical section, and the positioning boss and the installation clamp are integrated;

The equipment chassis is a rectangular box, and its inner surface is provided with equidistant and parallel rectangular bosses along the length direction of the box. The length and segmentation of the rectangular bosses are consistent with the positioning bosses on the installation board. The rectangular bosses The horizontal section is located on the inner bottom of the equipment case, and the vertical section and transition section are located on the inner side of the equipment case;

The connection relationship is: the printed circuit board of the power circuit is installed on the inner surface of the vertical part panel of the installation board through the thermal pad, and there is a gap between the inner surface of the horizontal part panel, and the circuit components of the power circuit are installed on the installation board The inner surface of the panel of the horizontal part of the card, the printed circuit board and the circuit components are connected by wires; the output power module is installed in the equipment case, and the positioning boss on it is connected with the rectangular protrusion in the equipment case through its right-angled positioning surface. Matched with the platform and fixed by screws.

The beneficial effects of the present invention are: (1) In the present invention, a single power module adopts a structure similar to a right-angle board, which not only solves the installation problem of circuit boards and power components, but also facilitates debugging; and increases the contact area through simultaneous contact of multi-faceted structures, It solves the problem of installation and heat transfer after the power module is integrated in the device, facilitates high-density installation of the product, and reduces the volume and weight of the device.

(2) The present invention utilizes the arrangement structure of a plurality of power supply modules, which also plays a strengthening role in resisting space radiation.

Description of drawings

Fig. 1 is a schematic diagram of the front structure of the output power supply module in the present invention;

Figure 2 is a schematic diagram of the back structure of the output power supply module in the present invention

Fig. 3 is a structural representation of the present invention;

Fig. 4 is a structural schematic diagram of the full contact between the installation base plate and the equipment chassis base plate in the present invention;

Among them, 1-installation bottom plate, 2-thermal conduction pad, 3-positioning boss, 4-circuit component installation board, 5-equipment chassis.

detailed description

Referring to accompanying drawing 1, a kind of modular multi-channel output power supply, it comprises: output power supply module 4 and equipment chassis 5;

Referring to accompanying drawings 3 and 4, the output power module 4 includes: a power circuit, a mounting board 1 and a thermal pad 2; the power circuit includes: a printed circuit board and circuit components; the mounting board is an L-shaped vertically bent panel structure, The inner surface of the vertical part of the panel is the mounting surface of the printed circuit board, the inner surface of the horizontal part of the panel is the mounting surface of the circuit components, and the outer surface of the vertical part of the panel is provided with a positioning boss 3, and the positioning boss is 3 points It consists of three sections: horizontal section, vertical section and transition section. The horizontal section extends horizontally from one end of the vertical section panel to the other end. The lower surface of the horizontal section forms a right-angled positioning surface with the vertical section panel. At one end, the vertical section extends vertically downwards from the top edge of the vertical section panel, the bottom surface of the vertical section is on the same plane as the end surface of the vertical section panel, the transition section is located between the horizontal section and the vertical section, and the positioning boss 3 and The installation card board 1 is an integral structure;

The equipment case 5 is a rectangular box, and its inner surface is provided with equidistant and parallel rectangular bosses along the length direction of the box. The length and segmentation of the rectangular bosses are consistent with the positioning bosses on the installation board 1. The horizontal section of the boss is positioned at the inner bottom surface of the equipment cabinet 5, and the vertical section and the transition section are positioned at the inner surface of the equipment cabinet 5;

The connection relationship is: the printed circuit board of the power circuit is installed on the inner surface of the vertical part panel of the installation board 1 through the thermal pad 2, leaving a gap between the inner surface of the horizontal part panel, and the circuit components of the power circuit are installed on the The inner surface of the panel of the horizontal part of the board 1 is installed, and the printed circuit board and the circuit components are connected by wires. The wires are arranged in the gap between the printed circuit board of the power circuit and the inner surface of the horizontal part panel; the output power module 4 is installed in the equipment case 5, and the positioning boss 3 on it is connected to the rectangular shape in the equipment case 5 through its right-angled positioning surface. The bosses are matched and fixed by screws.

The printed circuit board with low power conducts heat to the vertical part panel on the installation board 1 through the heat conduction pad 2, and the heat of the rectifier tube and MOS tube with large power consumption is directly transferred through the horizontal part panel on the installation board 1 heat dissipation;

Referring to accompanying drawing 2, preferably, in order to increase the contact area between the output power supply module 4 and the bottom plate of the equipment chassis 5, reduce the thermal resistance, and improve the heat dissipation efficiency, the horizontal plane of the installation bottom plate 1 can be designed to be the same as that of the equipment chassis 5 The bottom surface is in full contact, and the heat dissipation is better transmitted through the increase of the contact surface.

Claims (2)

1. a modularized multiple out-put supply, is characterized in that, it comprises: plural out-put supply module (4) withAnd equipment cabinets (5);

Out-put supply module (4) comprising: power circuit, installation board (1) and heat conductive pad (2); Power circuit comprises: printCircuit board processed and circuit elements device; It is the vertical bending side plate structure of L-type that board is installed, and the inner surface of its vertical component panel isThe installed surface of printed circuit board, the inner surface of its horizontal component panel is the installed surface of circuit elements device, its vertical component panelOuter surface is provided with positioning boss (3), and positioning boss (3) is divided into horizontal segment, vertically three sections of section and changeover portions, and horizontal segment is along verticalOne end level of part panel is extended to the other end, the lower surface of horizontal segment and the vertical component panel-shaped locating surface that meets at right angles, verticallySection is positioned at one end of horizontal segment bearing of trend, and vertically section is vertically extended downwards by the top margin of vertical component panel, vertically the bottom surface of sectionBe positioned at same plane with the approaching vertically end face of section in vertical component panel, changeover portion, between horizontal segment and vertical section, is locatedBoss (3) is structure as a whole with installation board (1);

Equipment cabinets (5) is rectangular box, and its inner surface is along arranging on the length direction of casing equidistantly and the rectangle being parallel to each otherBoss, the length of rectangular boss is consistent with the positioning boss on installation board (1) with segmentation, and the horizontal segment of rectangular boss is positioned to be establishedThe inner bottom surface of standby host case (5), vertically section and changeover portion are positioned at the medial surface of equipment cabinets (5);

Its annexation is: the printed circuit board of power circuit is installed on the vertical component effect that board (1) is installed by heat conductive pad (2)The inner surface of subpanel, and leave gap between the inner surface of horizontal component panel, the circuit elements device of power circuit is installed on installationThe inner surface of the horizontal component panel of board (1), is connected by wire between printed circuit board and circuit elements device; Out-put supplyModule (4) is installed in equipment cabinets (5), and the positioning boss (3) on it is by its right angle locating surface and equipment cabinets (5)Interior rectangular boss matches, and is fixed by screw.

2. a kind of modularized multiple out-put supply as claimed in claim 1, is characterized in that, described installation board (1) waterThe outer surface of flat part panel contacts completely with the bottom surface of described equipment cabinets (5).