RU22586U1 - SEMICONDUCTOR UNIT WITH TABLET DEVICES - Google Patents

Description

The utility model relates to power semiconductor technology and can be used to create new devices for power semiconductor electronics.

A known construction of a semiconductor block, comprising:

Q tablet-type semiconductor devices mounted between cooler fins,

and the flat springs with which the semiconductor devices are pressed against the surface of the cooler,

and electrodes used to connect semiconductor devices to each other and to the electrical circuit of devices

(Patent No. US 03916435 of October 28, 1975). The disadvantage of the design of patent No. US 03916435 is:

And a special design of a silver cooler is required, the geometric dimensions of which are completely interconnected with the geometric dimensions of semiconductor devices installed and fixed by flat springs in the intercostal space.

The characteristics of the analogue according to patent No. US 03916435, which coincide with the essential features of the claimed useful mrdli, are a priori, the presence of:

and springs providing pressure electrical and thermal contact between the cooler and semiconductor devices.

Reasons that hinder the receipt of the required technical solutions in the analogue are as follows:

and requires a special design of the fin cooler, the geometric dimensions of which are fully interconnected with the geometric dimensions of semiconductor devices,

and in the design two types of electrical contacts are used - clamping and soldered.

The design of the semiconductor rectifier block, consisting of:

and semiconductor devices, one of the electrodes of which is a metal case, the second electrode is the output,

Q metal jumpers used to connect semiconductor devices by themselves,

and current leads designed to connect a semiconductor block to an electrical circuit,

and not less than two silver coolers having a flat region located perpendicular to the plane of the ribs;

and Belleville springs providing clamping electrical contact,

but insulators,

and clamping devices,

g / 12.31

devices, while the cooler ribs are oriented in opposite directions, the current leads are located between the flat regions of the coolers. Coaxial holes are made in metal jumpers, current leads and coolers in at least two areas with guide elements installed on them, on which insulators and disk springs are placed between the flat cooler region and the metal jumpers connecting the semiconductor devices, and the current leads are installed between the metal jumpers and pressed against them by Belleville springs, (application for utility model No. 2000129084 of November 28, 2000 (Russian Federation).

The disadvantages of the design according to the application No. 2000129084 are:

and semiconductor devices are pressed into the body of the cooler, when pressed into the devices, great mechanical forces are applied, which can lead to their destruction,

o semiconductor devices are interconnected by soldering.

The reasons that impede the receipt of the required technical solutions in the prototype are as follows:

semiconductor devices are pressed into the body of the cooler, while great mechanical forces are applied to them, which can lead to the destruction of devices,

and semiconductor devices are interconnected by soldering.

The task to which the claimed utility model is directed is to eliminate the indicated drawbacks and create a utility model of a power semiconductor block with tablet devices having clamping devices.

electrical contacts and in which mechanical effects on semiconductor devices are minimized.

The essence of the proposed technical solutions is that a semiconductor unit with tablet devices consists of;

and semiconductor devices of tablet design having at least two electrodes,

and metal jumpers used to connect semiconductor devices to each other,

and a fin cooler having a flat region located perpendicular to the plane of the ribs; on which are located

semiconductor devices

and Belleville springs providing clamping electrical contact,

but electrical insulators.

The semiconductor block contains many tablet-type semiconductor devices, on each of which a contact is made, which is a metal body consisting of a base adjacent to the semiconductor device, and a shank, metal jumpers and electrical insulators with plate springs mounted on them are fitted on the contact shanks, protruding behind the plate springs, the parts of the electrical insulators are equipped with a traverse having holes coaxial with holes in the flat part of the cooler ator, and connected to it with screws to create an electrical contact pressure.

Metal jumpers have parts protruding beyond the plane of the beam, to which current leads are pressed, located above the beam and electrically isolated from the beam.

At least two finned coolers are mechanically interconnected in such a way that their ribs are directed in opposite directions.

In the power semiconductor block of the proposed design, the mechanical effects applied to the external bus are not transmitted to the semiconductor devices, because a clamped electrical contact is made between:

and current leads and metal jumpers,

about between metal jumpers and semiconductor devices,

and between semiconductor devices and coolers.

Common features of the claimed technical solution and the known are the presence of:

but a fin cooler,

semiconductor devices,

and a metal jumper designed to interconnect semiconductor devices,

Q CONDUCTORS.

Distinctive features are the presence of:

Q contact, which is a metal body, consisting of a base adjacent to a semiconductor device, and a shank, metal jumpers are put on the shanks of the contacts and

electrical insulators with Belleville springs installed on them, on the parts of the electric insulators protruding beyond the Belleville springs, a traverse is worn, having holes coaxial with holes in the flat part of the cooler and connected to it with screws to create a clamping electrical contact,

and to the metal jumpers are pressed current leads located under the traverse and electrically isolated from it,

and the metal jumpers have parts protruding beyond the plane of the beam, to which current leads are located, located above the beam and electrically isolated from it,

and at least two finned coolers are mechanically interconnected so that their ribs are directed in opposite directions.

The authors believe that the claimed technical solution meets the criterion of "significant differences, since technical solutions having features similar to those distinguishing the claimed solution from the prototype are unknown to them.

In FIG. 1 shows a general view of one of the designs of a power semiconductor block in a perspective view. In FIG. 2 shows the electrical circuit of the semiconductor block. In FIG. 3 is a mounting diagram of a tablet-type semiconductor device block in a semiconductor block; FIG. 4 is a left view of a block; FIG. 5 is a sectional view of a semiconductor unit structure. In FIG. 6 is a perspective view of a semiconductor unit containing two finned coolers in a perspective view, and FIG. 7 shows its electrical circuit.

The semiconductor block shown in FIG. 1, consists of a fin cooler 1 with a flat region 2 on which semiconductor devices are mounted 4. Semiconductor devices are combined into groups, each of which contains 4 devices, connected in parallel by metal jumpers 5. In the block shown in figure 1, such there is a group of 6. Between the cooler 1, the semiconductor devices 4 and the metal jumpers, a pressure-sensitive electrical contact is made with Belleville springs located under the traverse 6, connected to the cooler by screws . The metal jumpers of the block have parts protruding beyond the plane of the beam. Current leads 7,8,9,10,11,12 are pressed to these parts of metal jumpers. A current lead 3 is fastened on one of the ribs of the cooler 1, which is shortly electrically connected to the cooler. The corners of the cooler 1 reinforced corners 13,14,15 to ensure the installation of the unit in the devices. The electrical circuit of the block is shown in figure 2. The block shown in figure 1, is an anode group of two three-phase rectifiers with common rectified current circuits.

FIG. 3 is a left view, and FIG. 4 of FIG. 4 shows a mounting diagram of two tablet-type semiconductor devices in a semiconductor unit. On each semiconductor device 4 through the gasket 16, a contact 17 is installed, consisting of a base adjacent to the semiconductor device. A metal jumper 5 and insulators 19c are mounted on the shanks 18 and plate springs 20 are mounted on them. On the part of the insulators 19 protruding from the disk springs 20, a traverse 21 is put on, which is mechanically connected to the cooler by screws 22 {Fig. 5). Metal jumpers 5, 23 have parts 24 and 25, protruding beyond the plane of the beam. To metal parts protruding beyond the traverse plane

jumpers are pressed against current leads 7, .8,9,10,11,12 (current leads 7 and 8 are not shown in Fig. 5). For this purpose, clamping devices 26 are installed between the flat region 2 of cooler 1 and metal jumpers, which are electrically isolated from the cooler.

Fig. 2 shows the construction of a semiconductor block, consisting of two interconnected coolers 1 and 27 with semiconductor devices mounted on them, and in Fig. 7 shows its electrical circuit. The coolers are interconnected by the clamping devices 29. The semiconductor unit shown in Fig.6, represents two three-phase rectifiers with common rectified current circuits.

Thus, the proposed design of the power semiconductor block has the following advantages over the known design:

and improved operational characteristics of the semiconductor block due to the use of semiconductor devices of tablet design and the use of clamping electrical contact between the individual parts of the block,

and significantly simplified the design of the power semiconductor unit containing parallel-connected semiconductor devices,

o excluded mechanical effects on semiconductor devices.

Claims (4)

1. A semiconductor block with tablet devices, consisting of tablet-type semiconductor devices having at least two electrodes, metal jumpers used to electrically connect the semiconductor devices to each other, a fin cooler having a flat region located perpendicular to the plane of the ribs on which the semiconductor devices are located , Belleville springs providing clamping electrical contact, electrical insulators, characterized in that the semiconductors The th block contains many tablet-type semiconductor devices, on each of which a contact is made, which is a metal body consisting of a base adjacent to the semiconductor device, and a shank, a metal jumper and electrical insulators with plate springs mounted on them are mounted on the contact shanks, parts of electrical insulators protruding from the plate springs, a traverse is fitted, having holes aligned with holes in the flat part of the cooler, and connected Separated from him for creating screw clamp electrical contact.  2. The semiconductor block with tablet devices according to claim 1, characterized in that the current lead is pressed against the metal jumper with a plate-shaped jumper.  3. A semiconductor block with tablet devices according to claims 1 and 2, characterized in that the metal jumpers have parts protruding beyond the plane of the beam, to which current leads are located, located above the beam and electrically isolated from the beam. 4. A semiconductor block with tablet devices according to claims 1 to 3, characterized in that at least two finned coolers are mechanically interconnected so that their ribs are directed in opposite directions.