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rectifier circuit

A rectifier circuit, conductive plate technology, applied in the direction of circuits, printed circuits, printed circuit manufacturing, etc., can solve the problems of high mechanical tension, downward movement, high structural space consumption, etc., to achieve the effect of easy operation and reduced power loss

Active Publication Date: 2020-12-29
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] An additional disadvantage of the arrangement shown here is that, from the point of view of the power module, heat dissipation only takes place downwards
The use of pressure contacts is likewise disadvantageous, since they require high mechanical tension when engaging the device, which requires correspondingly expensive mechanical equipment and installation space in the context of the device

Method used

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Embodiment Construction

[0032] exist figure 1 The midpoint circuit is shown in . The full bridge is shown on the left side of the figure. The full bridge includes a first bridge arm and a second bridge arm. The two bridge arms are parallel to the (middle) DC voltages L(+) and L(-). Each bridge arm comprises two switches QA, QB and QC, QD, eg in the form of IGBTs. The switch pair QA, QB is assigned to the first bridge arm and the switch pair QC, QD is assigned to the second bridge arm. The primary winding 18a of the welding transformer 18 is arranged in the bridge branch.

[0033] The rectifier according to the invention is shown on the right side of the figure. This rectifier is arranged on the two secondary windings 18 b of the welding transformer 18 . The two secondary windings 18b are connected in series and form an intermediate connection 17 at the contact point of the series circuit. Thus, a first sub-branch and a second sub-branch are formed. Connected to the intermediate connection 17 ...

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Abstract

The invention relates to a rectifying circuit. The invention relates to a power component for supplying current with plates 22 , 23 a , b aligned parallel to one another, connected to current inputs of power semiconductors 25 embedded in a component carrier 21 connected to the current output. Thus, high currents, eg for resistance welding, can be controlled without excessive heat loss leading to an increase in the temperature of the entire device and thus to a reduction in the expected service life.

Description

technical field [0001] The invention relates to a rectifier circuit for supplying high currents, in particular as required in industrial processes or in productive machines. Background technique [0002] A device for supplying high currents is shown in EP 1 921 908 B1. here, figure 1 It is illustrated schematically in a side view how expensive it is to dissipate the heat losses that occur in such an arrangement. In the case of more complex circuits in which multiple power semiconductors are used, the outlay is correspondingly increased. In addition to the material costs, also the costs for installation, maintenance and repairs must be taken into account here. [0003] An additional disadvantage of the arrangement shown here is that, from the point of view of the power module, the cooling proceeds only downwards. Furthermore, the structural height of the arrangement is designed to be unfavorable for heat transfer, since the higher the layer thickness, the more difficult i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/219
CPCH02M7/219B23K11/241H01F38/085H01L23/473H01L23/492H01L23/5389H02M7/4807H02M3/155H02M3/337H05K1/14H05K3/325B23K11/257H01L25/071
Inventor L.卢格M.施坦布雷歇尔O.特劳特曼R.肖尔茨
Owner ROBERT BOSCH GMBH