JPH04287398A - Electric power supplying structure - Google Patents

Abstract

PURPOSE:To reduce the number of power supplying lines and, at the same time, to shield harmful electromagnetic waves by supplying electric power to a printed board unit by using a conductive coolant. CONSTITUTION:This electric power supplying structure is provided with an insulated container 14 composed of the first and second inner chambers 14-1a and 14-1b in which a conductive liquid 16 is respectively circulated and conductive plates 14-2 are respectively provided and which are separated from each other with a partition plate 14-1 having an excellent insulating property and a printed board unit 11 which is mounted with a plurality of electronic parts 11-1b and coated with an insulating film 11-3 except a power supply and grand electrodes 11-1a and 11-1b. After the electrodes 11-1a and 11-1b are respectively passed through the partition plate 14-1 so that the electrodes 11-1a and 11-1b can be positioned in the chambers 14-1a and 14-1b, the printed board unit 11 is dipped in the liquid 16 contained in each chamber 14-1a and 14-1b and a power supply and grand cables 3-1 and 3-2 are respectively connected to the conductive plates 14-2.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for supplying power to printed board units widely used in the construction of various electronic devices.

Recently, multiple printed circuit board units installed in large electronic devices such as supercomputers have been constructed using printed wiring boards (hereinafter abbreviated as "substrates"), which incorporate various highly integrated electronic components in order to speed up signal transmission. ) are mounted in high density. Along with this, the amount of heat generated by the printed board unit has also increased, and many power supply wires have been wired inside the equipment, making it easier to cool the printed board unit and increasing the number of power supply wires. New power supply structures are needed that simplify wiring.

0003

2. Description of the Related Art As shown in FIG. 4, a power supply structure that has been widely used in the past includes a power supply structure provided at the edge of a board 1-1 of a printed board unit 1 on which a plurality of various electronic components 1-2 are mounted. Connect the power cable 3- to the power pad 1-1a of
At the same time, a ground cable 3-2 is connected to each ground pad 1-1b, and connected to the signal cable 2 through the connector 1-3 connected to the signal pad, thereby connecting the various electronic components 1-2 described above. The electronic component 1-2 is configured to be cooled by a cooling mechanism (not shown).

0004

[Problems to be Solved by the Invention] The problem with the conventional method described above is that a plurality of power cables 3-1 and ground cables 3-2 are connected to one printed board unit 1. When multiple printed circuit board units 1 are installed in a device, the number of power cables 3-1 and ground cables 3-2 for power supply increases, and electromagnetic waves generated from power supply cables, etc. This poses a problem that the electronic components 1-2 mounted on the printed board unit 1 are adversely affected and that it becomes difficult to provide a cooling mechanism for each printed board unit 1.

In view of the above-mentioned problems, the present invention supplies power to the printed board unit using a conductive refrigerant, thereby reducing the number of power supply wirings, blocking harmful electromagnetic waves, and improving the printed circuit board unit. The purpose is to provide a new power supply structure that allows easy cooling of the plate unit.

[0006]

[Means for Solving the Problems] As shown in FIG. 1, the present invention provides first and second inner chambers 14 which are divided by a partition plate 14-1 having excellent insulation properties and which circulate a conductive liquid 16 respectively. -1a, 14-1b, and each inner chamber 14-1
An insulating container 14 in which a conductive plate 14-2 is arranged on each of a and 14-1b, and a plurality of various electronic components 1-2 are attached to a substrate 1.
1-1, the signal cable 2 is pulled out, and an insulating coating 11-3 is formed on the entire surface of the substrate 11-1.
The power supply electrode 11-1a and the ground electrode 11-
1b is exposed, the power supply electrode 11-1a exposed from the insulating coating 11-3 of the printed board unit 11 is placed in the first inner chamber 14-1a, and the ground electrode 11-1b is placed in the first inner chamber 14-1a. The printed board unit 11 is inserted into the first and second inner chambers 14-1a by inserting the partition plate 14-1 so that the printed board unit 11 is located in the first and second inner chambers 14-1b.
, 14-1b and immersed in the conductive liquid 16, respectively, and disposed in the first inner chamber 14-1a.
The power cable 3-1 is connected to the conductive plate 14-2 disposed in the second interior chamber 14-1b, and the ground cable 3-2 is connected to the conductive plate 14-2.

[0007]

[Operation] In the present invention, the first and second inner chambers 14-1a
, 14-1b is filled with the conductive liquid 16 in the insulating container 1.
Insulated by a partition plate 14-1 provided in the center of 4,
The printed board unit 11 is connected to the partition plate 14 so that the exposed power supply electrode 11-1a of the printed board unit 11 is located in the first inner chamber 14-1a, and the ground electrode 11-1b is located in the second inner chamber 14-1b. -1 and immersed in the conductive liquid 16, respectively, and the power cables 3-1,
By connecting the conductive plate 14-2 disposed in the second inner chamber 14-1b and the ground cable 3-2, the printed board unit is connected via the conductive liquid 16 insulated by the partition plate 14-1. Since power is supplied to the power supply electrode 11-1a and the ground electrode 11-1b of 11, the plurality of printed board units 11 are connected to the conductive liquid 1 of the insulating container 14.
6, the number of wirings for power supply becomes two, making it possible to reduce the number of wirings.

Furthermore, since the entire printed circuit board unit 11 is immersed in each conductive liquid 16, it is shielded and is not adversely affected by electromagnetic waves.
Furthermore, by cooling and circulating the conductive liquid 16, the printed board unit 11 can be easily cooled.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 3. FIG. 1 is a schematic sectional view showing the power supply structure according to the first embodiment, FIG. 2 is a schematic sectional view showing the power supply structure according to the second embodiment, and FIG. 3 is a schematic sectional view of the printed board unit according to the present embodiment. In the figure, the same members as those in FIG. 4 are given the same symbols, the other 11 is a printed board unit in which various electronic components are mounted, 14 is an insulating container in which the printed board unit is immersed, and 16 is a conductive liquid that provides power to the printed circuit board unit.

As shown in FIG. 3, the printed board unit 11 has a flat power supply electrode 11-1a and a ground electrode 11-1b formed on both edges of the back side of a substrate 11-1, and a plurality of flat ground electrodes 11-1b on the main surface side. Various electronic components 1-2 are mounted, and a connector 1-3 is connected to a signal pad (not shown) provided on the edge, and the power supply electrode 11-1a and the ground electrode 11-1 of this board 11-1 are connected. By applying an insulating coating 11-3 to the entire surface except for 1b and the signal cable 2 connected to the connector 1-3, the power supply electrode 11-
1a and ground electrode 11-1b are exposed to the outside through insulating coating 11-3.

As shown in FIG. 1, the insulating container 14 has first and second inner chambers 14-1a and 14-1b divided at the center by a partition plate 14-1 with excellent insulation properties. The first and second inner chambers 14-1a and 14-1b are provided with a supply port and a discharge port (not shown) for circulating the conductive liquid 16, which will be described later, in separate systems, and are arranged in a flat plate shape with a constant size. The conductive plate 14-2 is connected to the first and second inner chambers 14-1a, 14-
One sheet is arranged on each side wall of 1b.

The conductive liquid 16 is a liquid having excellent conductivity and cooling ability, such as general-purpose mercury. The power supply structure of the first embodiment using the above members is, as shown in FIG. The second internal chambers 14-1a and 14-1b are each supplied with a conductive liquid 16 made of mercury or the like from separate circulation paths, and the conductive liquid 16 disposed in the first internal chamber 14-1a is filled. A power cable 3-1 is connected to the plate 14-2, and a ground cable 3-2 is connected to the conductive plate 14-2 disposed in the second interior chamber 14-1b.

Then, the power supply electrode 11-1a exposed from the insulating coating 11-3 of the printed board unit 11 is located in the first inner chamber 14-1a of the insulating container 14, and the ground electrode 11-1b is located in the first inner chamber 14-1a of the insulating container 14. The printed board unit 11 is inserted into the first and second inner chambers 14-1 by inserting the partition plate 14-1 so as to be located in the second inner chamber 14-1b.
By immersing them in the conductive liquids 16 of a and 14-1b, power is supplied to the printed board unit 11 via the respective conductive liquids 16.

As a result, the conductive plates 1 provided in the first and second inner chambers 14-1a and 14-1b of the insulating container 14, respectively.
4-2, power cable 3-1 and ground cable 3-
When power is supplied from 2 and 2, the printed board unit 11
Since power is supplied to the power supply electrode 11-1a and the ground electrode 11-1b, the number of wiring for power supply is reduced.
Since the entire printed board unit 11 is covered with the conductive liquid 16, that is, mercury, the adverse effects of noise caused by electromagnetic waves can be completely prevented.

The power supply structure of the second embodiment is shown in FIG.
As shown in FIG. 2, a first insulating container 24 made of an insulating material is formed into a size that can accommodate the printed board unit 11 and has a first inner chamber 24-1a, and a first insulating container 24 is provided with a first inner chamber 24-1a at the bottom of the first inner chamber 24-1a. A second interior chamber 25 that is molded to a size that allows for installation and is sealed.
A second insulating container 25 made of an insulating material provided with -1a is formed, and a flat conductive plate 14-2 is arranged on the side wall of each of the first inner chamber 24-1a and the second inner chamber 25-1a. A second insulating container 25 is installed in the lower part of the first inner chamber 24-1a, and a conductive liquid 16 is supplied to the first inner chamber 24-1a and the second inner chamber 25-1a.

Similarly to the first embodiment, the exposed power supply electrode 11-1a of the printed board unit 11 is located in the first inner chamber 24-1a, and the ground electrode 11-1
b is located in the second inner chamber 25-1a, the printed board unit 11 is inserted into the second insulating container 25 and the upper lid so that the printed board unit 11 is located in the first and second inner chambers 24-1a and 25-1a. The power cable 3-1 is connected to the conductive plate 14-2 of the first insulating container 24, and the ground cable 3-2 is connected to the conductive plate 14-2 of the second insulating container 25 by immersing them in the liquid 16.
By connecting the two, it is possible to easily cool the printed board unit as in the first embodiment, prevent the adverse effects of electromagnetic waves, and reduce the number of wiring for power supply.

[0017]

As is clear from the above description, according to the present invention, it is possible to supply power at the same time as cooling the printed board unit 11 with an extremely simple configuration, and the wiring connection for power supply is simple. It is possible to provide a power supply structure which has advantages such as being simplified and being able to prevent the influence of noise caused by electromagnetic waves, and which can be expected to have significant economic and reliability effects.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view showing a power supply structure according to a first embodiment.

FIG. 2 is a schematic cross-sectional view showing a power supply structure of a second embodiment.

FIG. 3 is a schematic cross-sectional view showing the printed board unit of this embodiment.

FIG. 4 is a schematic cross-sectional view showing a conventional power supply structure.

[Explanation of symbols]

1-2 is an electronic component, 2 is a signal cable, 3-1 is a power cable, 3-2 is a ground cable, 11 is a printed board unit, 11-1 is a board,
11-1a is a power supply electrode, 11-1b is a ground electrode, 11-3 is an insulating coating, 1
4 is an insulating container, 14-1 is a partition plate, 14-1a, 24
-1a is the first inner chamber, 14-
1b, 25-1a is the second inner chamber, 14-2 is the conductive plate, 1
6 is a conductive liquid, 24 is a first insulating container,
25 is a second insulating container;

Claims (3)

[Claims] [Claim 1] Partition plate with excellent insulation (1
4-1) and each conductive liquid (16)
The first and second inner chambers (14-1a, 14-1
b) to form the inner chambers (14-1a, 14-1b
) and an insulating container (
14) and an insulating coating (
11-3) to connect the power supply and ground electrodes (
11-1a, 11-1b) to the insulating coating (11-3
), the exposed power supply electrode (11-1a) of the printed board unit (11) is placed in one of the internal chambers (14-1a), and the ground electrode ( 11-1b) into the other inner chamber (14
-1b) so that the partition plates (
14-1) through the printed board unit (11).
are stored in an insulating container (14) and each conductive liquid (1
6) and connect the power cable (3-1) to the conductive plate (14-2) disposed in one of the inner chambers (14-1a).
) through the conductive liquid (16) by connecting the conductive plate (14-2) disposed in the other inner chamber (14-1b) and the ground cable (3-2). A power supply structure configured to supply power to a printed board unit (11). 2. The insulating container has a first inner chamber (
A second insulating container (24-1a) is provided with a second insulating container (24-1a) and a second insulating container (24-1a) is sealed.
5), and a conductive plate (14-2) is disposed in each of the first inner chamber (24-1a) and the second inner chamber 25-1a). Connect the power cable (3-1
) and a ground cable (3-2) are connected to the power supply structure according to claim 1. Claim 3: The printed board unit comprises:
A flat power supply electrode (1) is installed on the printed wiring board (11-1).
1-1a) and a ground electrode (11-1b) are formed at positions separated by a certain distance from each other, and a plurality of various electronic components (
1-2) and connect the signal cable (2) from the edge.
), and remove the printed wiring board (11-1b) excluding the power supply electrode (11-1a) and ground electrode (11-1b).
2. The power supply structure according to claim 1, wherein an insulating coating (11-3) is applied to the entire surface of the signal cable (11-1) and the signal cable (2).