摘要:
A power semiconductor module (1) with a housing (2) and at least one semiconductor chip (3, 3′) located in it is devised. At least one semiconductor chip (3, 3′) has a first main electrode side (31) and a second main electrode side (32) opposite the first main electrode side, the first main electrode side (31) making thermal and electrical contact with the first base plate (4, 4′). The first cooling device (6) makes thermal and electrical contact with the side of the first base plate (41) facing away from the first main electrode side. The second main electrode side (32) makes thermal and electrical contact with a second base plate (5, 5′). A second cooling device (7) makes thermal contact with the side of the second base plate (51) facing away from the second main electrode side. The heat sink (65) of the first cooling device is supported against the housing (2).
摘要:
The disclosure relates to a connection device, in particular a heavy-duty plug-type connection, with a first connector and a second connector, which each have a contact-making element in order to produce an electrical connection in the connected state of the connectors; the connectors bearing against one another at a connection region in the connected state; at least one of the connectors comprising a coolant line with one or more access points for the supply and discharge, respectively, of a coolant; the coolant line being provided at the contact-making element in order to dissipate heat from a contact point between the contact-making elements; all of the access points of the coolant line being arranged outside of the connection region.
摘要:
The invention proposes a power semiconductor module with a housing (1) that consists of a hardenable plastic casting compound and a base plate (2), wherein electric power semiconductor components (4) are arranged on a section of the surface of the base plate (2) that faces the housing (1) by means of an insulating layer (5). At least the section of the surface of the base plate (2) that faces of the housing (1) and contains the electric power semiconductor components (4) is encapsulated in the housing( ), wherein the hardenable plastic casting compound has a hardness between 30 and 95 ShoreA.
摘要:
A transporting apparatus includes a transporting plane and a transporting platform which can be displaced in different directions in a largely friction-free manner on an air cushion above the transporting plane, the air cushion being generated by air nozzles which are distributed in the transporting plane and are adapted to be optionally opened and closed individually in each case by a valve. Compressed air flows out of the air nozzles in the upward direction from beneath through the transporting plane, and the valves of the air nozzles and the transporting platform are designed such that they interact with one another depending on the position of the transporting platform. The valves of the air nozzles are designed as solenoid valves equipped with a magnet coil, and the transporting platform has ferromagnetic regions that interact with the magnet coils of the solenoid valves in dependence on the position of the transporting platform.
摘要:
A slab laser includes cooled, mutually parallel electrodes having a given thickness. The electrodes have flat surfaces facing each other and defining a discharge chamber therebetween for containing a gas to be pumped, and the electrodes have flat surfaces facing away from the discharge chamber. Each of the electrodes has a plurality of sections being spatially separated from one another over at least a portion of the given thickness of the respective electrode. The electrodes are supported in such a way that movements of the flat surfaces facing away from the discharge chamber being caused by thermal expansion are opposed by only a negligible mechanical resistance.
摘要:
A system for determining the precision of a numerically controlled machineool involves setting the machine tool control to define a circular path. A circular standard is then aligned with the machine tool to sense the desired circular path. A continuous or pointwise sensing, as a function of whether a path-controlled or a point-by-point-controlled machine is being measured, of the aligned standard is performed. A faulty machine tool does not accurately cover the defined circular path. Variations from the desired circle can be plotted and used for evaluation.
摘要:
A semiconductor module includes first and second sub-units, each including at least one semiconductor chip, a first contact element having a first contact side, and a second or third contact element having a second or third contact side, respectively. The semiconductor chip has opposing first and second main electrode sides. The first main electrode side of the chip is thermally connected to the first contact side, and the second main electrode side is thermally connected to the second or third contact side. In the first sub-unit, a first fixation means connects the first and second contact elements and the chip together. In the second sub-unit, a second fixation means connects the first and third contact elements and the chip together. A flexible element, which is arranged between the first contact element and the first contact element, is electrically and thermally connected to the first contact elements.
摘要:
A first electronic component, e.g., a semiconductor die and a second electronic component, e.g., a substrate, each with a main surface, are bonded to each other by applying at least one metal layer comprising an indium layer on each of the main surfaces. Then the semiconductor die and the substrate are aligned against each other with their main surfaces facing each other. The die and substrate with the metal layers in between form an arrangement, which is introduced into a compression means. Afterwards the arrangement is compressed in the compression means at a pressure in a range of 10 to 35 MPa, and heat in a range of 230 to 275° C. is applied to the arrangement, by which temperature and pressure the electronic components are bonded to each other. The compression process is performable in oxygeneous gas atmosphere inside the compression means.
摘要:
A method for assembling a power semiconductor module with reduced partial discharge behavior is described. The method includes steps of bonding an insulating substrate onto a bottom plate; disposing a first conductive layer on a portion of said insulating substrate, so that at least one peripheral top region of said insulating substrate remains uncovered by the first conductive layer; bonding a semiconductor chip onto said first conductive layer; disposing a precursor of a first insulating material in a first corner formed by the first conductive layer and the peripheral region of the insulating substrate; polymerizing the precursor of the first insulating material to form the first insulating material; and covering the semiconductor chip, said substrate, the first conductive layer, and the first insulating material at least partially with a second insulating material. The precursor of the first insulating material can be a low viscosity monomer or oligomer, preferably a polyimide. Also disclosed is a semiconductor module with reduced partial discharge behavior.
摘要:
A power semiconductor module is disclosed with a housing that includes a hardenable plastic casting compound and a base plate, wherein electric power semiconductor components are arranged on a section of the surface of the base plate that faces the housing via an insulating layer. At least the section of the surface of the base plate that faces the housing and contains the electric power semiconductor components is encapsulated in the housing wherein the hardenable plastic casting compound has a hardness between 30 and 95 ShoreA.