WO2010076071A1 - Appareil électrique, en particulier appareil de commande - Google Patents

Appareil électrique, en particulier appareil de commande Download PDF

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Publication number
WO2010076071A1
WO2010076071A1 PCT/EP2009/064661 EP2009064661W WO2010076071A1 WO 2010076071 A1 WO2010076071 A1 WO 2010076071A1 EP 2009064661 W EP2009064661 W EP 2009064661W WO 2010076071 A1 WO2010076071 A1 WO 2010076071A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrical device
opening
housing
electrical
electrically conductive
Prior art date
Application number
PCT/EP2009/064661
Other languages
German (de)
English (en)
Inventor
Martin Retz
Claus Schmiederer
Hans-Oliver Ruoss
Matthias Giese
Stefan Heimburger
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2010076071A1 publication Critical patent/WO2010076071A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • H05K9/0018—Casings with provisions to reduce aperture leakages in walls, e.g. terminals, connectors, cables
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/02—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/02—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
    • H02K11/026—Suppressors associated with brushes, brush holders or their supports
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/02—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
    • H02K11/028—Suppressors associated with the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/40—Structural association with grounding devices

Definitions

  • control unit electrical device, in particular control unit
  • the invention relates to an electrical device, in particular a control device, preferably an electric motor, with an at least partially electrically conductive housing and at least one connecting line which is passed through an opening of the housing and / or connected to a connector provided in the opening.
  • a control device preferably an electric motor
  • Electrical devices of the type mentioned are well known from the prior art. Almost every electrical device has a terminal lead that passes through the housing or is connected to a connector provided in an opening in the housing. It is also known to make the housing at least partially electrically conductive. Frequently electrical devices of this type emit E MV interference. This is the case in particular for electrically commutated motors which emit both conducted and radiated disturbances of this type. These disturbances are caused by the switching of the motor inductances, clocked power output stages and clocked electronic modules. This means that without a suppression device, these faults can get out of the electrical device via the connection cable.
  • the electrical device with the features mentioned in claim 1 has the advantage that it effectively enables suppression of electrical equipment, in which inductive elements completely eliminated and thus costs can be saved.
  • EMC-proofed electrical devices especially EC motors, possible.
  • costs are reduced, since inductive suppression elements are essentially superfluous or must be provided only in small numbers.
  • the filter effort is minimized and the suppression device can be built up integrated.
  • the electrical device according to the invention can be easily achieved by legislators and customers required Entstörgrade in desired frequency ranges.
  • the noise filter design can be optimally designed, in particular, single-chip suppression solutions based on ceramics - such as X2Y - can be used. It is envisaged that by means of the electrical connection a shortest possible distance is bridged.
  • the electrical connection producing capacitive elements should be arranged in the region of the opening or the connector.
  • Such a mechanically short connection realizes a low-inductance structure.
  • the Filter effect of the capacitive elements is thereby across large frequency ranges, ie broadband, effective.
  • a development of the invention provides that the capacitive element is provided in the opening. In order to have to bridge the smallest possible distance by means of the capacitive element, this is arranged in the opening. This means that the electrical connection should be made directly in the opening.
  • edge surfaces of the opening are provided in the electrically conductive region of the housing, which are electrically connected to the capacitive elements.
  • the capacitive element is a capacitor, in particular a ceramic capacitor.
  • the capacitive element is therefore an interference suppression capacitor.
  • Particularly advantageous here can be provided a ceramic suppression capacitor.
  • a development of the invention provides that a plurality of capacitive elements are provided, which are distributed uniformly over the circumference of the opening, in particular diametrically opposed.
  • a particularly reliable Ent- fault of the electrical device can be achieved by several capacitive
  • Elements used to be in the area of the opening or the connector can be varied depending on the application.
  • the capacitive elements should be distributed over the circumference of the opening. In particular, a uniform distribution is provided for. With an even number of capacitive elements, these may be diametrically opposed.
  • a development of the invention provides that the line has insulation at least in some areas. In order to minimize a possible safety risk and to prevent that, if several connection lines are provided, these come into electrical contact with each other, the line is at least partially isolated. This can be provided both inside and outside the housing. The line can be substantially completely isolated, only in the area in which the electrical connection with the capacitive element is present, it has no insulation.
  • the housing consists of metal or metal.
  • the housing is particularly advantageous form electrically conductive, if it is at least partially made of metal or metal.
  • the housing can be made entirely of metal, so be a metal housing, or only in the region of the opening or the connector of metal, to allow electrical connection to the line.
  • connection cable has its own opening through which it is routed. In this way, the risk is minimized that in the case of several connecting lines, these in the area of the electrical connection unintentionally come into contact with each other and thus damage the electrical device. Also in this way the effect of the filtering by means of the capacitive elements is improved.
  • a development of the invention provides that the electric motor is commutated electronically by means of the control unit.
  • Such an electronically commutated electric motor has, depending on its power class, strong line-bound and radiated EMC interference. These are, as already mentioned, caused by the switching of the motor inductances, clocked power amplifiers and clocked electronic modules.
  • the electrical device has at least one clocked electronic module, in particular power output stage.
  • the clocked electronic module can be provided for example for electronic commutation of the electric motor. However, it can also serve any other purpose.
  • Such clocked electronic assemblies often generate strong EMC interference, which must be reduced by appropriate filtering measures. This applies in particular to power output stages.
  • the figure shows a section of an electrical device 1, for example a control device of an electric motor (not shown).
  • the electrical device 1 has a housing 2 into which four connection lines 3, 4, 5 and 6 are led. This introduction takes place through openings 7, 8, 9 and 10, which are introduced into a wall 1 1 of the housing 2.
  • the connection lines 3, 4, 5 and 6 are insulated, that is to say they have an insulation 13.
  • the housing 2 is made of metal and is therefore electrically conductive.
  • Disturbances are provided in the region of the openings 7, 8, 9 and 10 capacitive elements 14, which are formed for example as ceramic capacitors.
  • capacitive elements 14 are distributed uniformly over the circumference of the opening 7, 8, 9 and 10, two diametrically opposite each other.
  • the connection lines 3, 4, 5 and 6 are not insulated.
  • the capacitive elements 14 are connected directly to the connecting lines 3, 4, 5 and 6 and connect to inner sides 15, 16, 17 and 18 of the openings 7, 8, 9 and 10 ago.
  • the connection lines 3, 4, 5 and 6 are thus electrically coupled via the capacitive elements 14 to the housing 2 or its conductive region.
  • each connecting line 3, 4, 5 and 6 is assigned its own opening 7, 8, 9 and 10.
  • the diameter of the openings 7, 8, 9 and 10 can be connected to a respective line cross-section of the
  • EMC filter characteristic through the impedance-optimized ground connection and a Direct motor connection contacting is advantageous because by this measure the shortest possible contact between connecting lines 3, 4, 5 and 6 and the housing 2 and the inner sides 15, 16, 17 and 18 of the openings 7, 8, 9 and 10 is reached. This mechanically short connection realizes a low-inductance structure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

L'invention concerne un appareil électrique (1), en particulier un appareil de commande, de préférence un moteur électrique, comprenant un carter (2) électriquement conducteur au moins par endroits et au moins une ligne de raccordement (3, 4, 5, 6) qui passe par une ouverture du carter (2) et/ou est raccordée à un connecteur prévu dans l'ouverture (7, 8, 9, 10). Il est prévu que la ligne (3, 4, 5, 6) soit reliée électriquement avec la partie électriquement conductrice du carter (2) à l'aide d'au moins un élément capacitif (14) situé au niveau de l'ouverture (7, 8, 9, 10) et/ou du connecteur.
PCT/EP2009/064661 2009-01-05 2009-11-05 Appareil électrique, en particulier appareil de commande WO2010076071A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009000023.2 2009-01-05
DE102009000023A DE102009000023A1 (de) 2009-01-05 2009-01-05 Elektrisches Gerät, insbesondere Steuergerät

Publications (1)

Publication Number Publication Date
WO2010076071A1 true WO2010076071A1 (fr) 2010-07-08

Family

ID=41682283

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/064661 WO2010076071A1 (fr) 2009-01-05 2009-11-05 Appareil électrique, en particulier appareil de commande

Country Status (2)

Country Link
DE (1) DE102009000023A1 (fr)
WO (1) WO2010076071A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022004598A1 (de) 2022-12-08 2024-06-13 Kostal Automobil Elektrik Gmbh & Co. Kg Elektrisches Gerät

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1148602A1 (fr) * 2000-04-20 2001-10-24 Mannesmann VDO Aktiengesellschaft Dispositif limiteur de surtensions
WO2006027290A1 (fr) * 2004-09-06 2006-03-16 Robert Bosch Gmbh Moteur a courant continu avec dispositif d'antiparasitage
EP1670123A2 (fr) * 2004-11-29 2006-06-14 TDK Corporation Filtre antiparasites et moteur électrique utilisant un tel filtre
DE102007018462A1 (de) * 2007-04-19 2008-10-30 Robert Bosch Gmbh Gleichstrommotor mit einem Durchführungskondensator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1148602A1 (fr) * 2000-04-20 2001-10-24 Mannesmann VDO Aktiengesellschaft Dispositif limiteur de surtensions
WO2006027290A1 (fr) * 2004-09-06 2006-03-16 Robert Bosch Gmbh Moteur a courant continu avec dispositif d'antiparasitage
EP1670123A2 (fr) * 2004-11-29 2006-06-14 TDK Corporation Filtre antiparasites et moteur électrique utilisant un tel filtre
DE102007018462A1 (de) * 2007-04-19 2008-10-30 Robert Bosch Gmbh Gleichstrommotor mit einem Durchführungskondensator

Also Published As

Publication number Publication date
DE102009000023A1 (de) 2010-07-08

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