Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1987-03-23
1989-02-07
Pellinen, A. D.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
357 81, 361388, H05K 720
Patent
active
048035904
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention is based on an electric switching device including a power switching component arranged in a completely insulated housing. In watertight electronic devices, it is known from the German design Patent Publication No. DE-CM No. 79 09 986 to guide the heat outward by means of cooling plates, the heat being generated in the power switching components arranged on the cooling plates. The plots are used simultaneously for fastening the switching device. In electrical devices having a fully insulated housing, it is known to guide the heat from power transistors and power resistors directly to a connector plug by means of a cooling plate or to construct the cooling plate and connection plug as a structural connector part, by means of which the heat is guided outward and conducted away by a connecting cable harness having good heat conduction and large surface. This solution has been proven particularly in regulator switches and blinker units in the engine space of motor vehicles. Since such switching devices in motor vehicles have recently become more voluminous, while the connector plugs have become smaller, the connector plugs, which are combined to form connector plug units, have increases in number, and it is no longer possible to eliminate the heat generated at the power component of such switching devices solely by means of plugs which are assigned to them.
SUMMARY OF THE INVENTION
The present solution has an objective to guide out the heat which is electrically generated in the power components by means of the connector parts of the circuit device without changing the spacing of the connector parts relative to one another for this purpose.
ADVANTAGES OF THE INVENTION
The electric switching device, according to the invention has the advantage that the electrical heat generated in one or more power components is uniformly guided out by means of a plurality of connector parts, so that an accumulation of heat in the switching device, which might lead to the power switching destruction of the component, is prevented. An additional advantage is that a plurality of power switching components have a heat conducting connector with the quantity of connector parts in the form of flat plug-in prongs, for example, providing sufficient elimination of heat via individual cooling bodies, in the form of cooling plates to, which the power components are connected.
It is particularly advantageous to connect the cooling body with the connector parts by means of a thin insulating foil and a heat conducting paste. In order to limit the quantity of cooling bodies in switching devices with a plurality of power components, it is advantageous to arrange a plurality of power components on a cooling body, wherein the power component elements are fastened on the cooling body so as to be electrically insulated and so as to conduct heat in order to prevent short circuiting.
BRIEF DESCRIPTION OF THE DRAWING
Some embodiment examples of the invention are shown in the drawing and explained in more detail in the following description.
FIG. 1 shows in a sectional side view a cutaway part of the electrical switching device with a multiple-pole plug-in connector;
FIG. 2 shows the upper part of the switching device of FIG. 1 in longitudinal section;
FIG. 3 shows a power switching component of the switching device of FIG. 2 with cooling plate and connector, shown on considerably enlarged scale;
FIG. 4 shows another embodiment of components of invention with a plurality of power and a plurality of cooling plates;
FIG. 5 shows a longitudinal section through the connection area of the switching device according to FIG. 4 in a side view;
FIG. 6 shows another embodiment of the invention for a plurality of connector parts arranged one above the other; and
FIG. 7 shows connector parts which are embedded in heat coducting material in another exemplary embodiment of the invention.
DESCRIPTION OF THE EXEMPLARY EMBODIMENTS
FIGS. 1 to 3 show details of the upper area of an electronic switching and controlli
REFERENCES:
patent: 2759133 (1956-08-01), Mueller
patent: 3390226 (1968-06-01), Beyerlein
patent: 3549783 (1970-12-01), Bendrick
patent: 3846823 (1974-11-01), Matthews et al.
patent: 3987344 (1976-10-01), Ambruoso et al.
patent: 4266267 (1981-05-01), Ruegg
patent: 4646203 (1987-02-01), Ngo et al.
patent: 4675784 (1987-06-01), Dahlberg et al.
Balderes et al., "Heat Dissipation from IC Chips through Module Package", IBM Technical Disclosure Bulletin, vol. 19, No. 11, 4/77, pp. 4165-4166.
Fassel Reinhard
Haubner Georg
Zobl Hartmut
Pellinen A. D.
Robert & Bosch GmbH
Striker Michael J.
Thompson Gregory D.
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