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WO2022008210A1 - Unité électronique pour appareil électrique - Google Patents

Unité électronique pour appareil électrique Download PDF

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Publication number
WO2022008210A1
WO2022008210A1 PCT/EP2021/066731 EP2021066731W WO2022008210A1 WO 2022008210 A1 WO2022008210 A1 WO 2022008210A1 EP 2021066731 W EP2021066731 W EP 2021066731W WO 2022008210 A1 WO2022008210 A1 WO 2022008210A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit board
printed circuit
interference suppression
connection
plug
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/EP2021/066731
Other languages
German (de)
English (en)
Inventor
Steffen Krueger
Soenke SCHUCH
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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 WO2022008210A1 publication Critical patent/WO2022008210A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
    • H05K1/023—Reduction of cross-talk, noise or electromagnetic interference using auxiliary mounted passive components or auxiliary substances
    • H05K1/0233—Filters, inductors or a magnetic substance
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/52—Fixed connections for rigid printed circuits or like structures connecting to other rigid printed circuits or like structures
    • H01R12/523—Fixed connections for rigid printed circuits or like structures connecting to other rigid printed circuits or like structures by an interconnection through aligned holes in the boards or multilayer board
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
    • H01R13/7193—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters with ferrite filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
    • H01R13/7197—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters with filters integral with or fitted onto contacts, e.g. tubular filters
    • 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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/14—Structural association of two or more printed circuits
    • H05K1/144—Stacked arrangements of planar printed circuit boards
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/04—Assemblies of printed circuits
    • H05K2201/042—Stacked spaced PCBs; Planar parts of folded flexible circuits having mounted components in between or spaced from each other
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/08—Magnetic details
    • H05K2201/083—Magnetic materials
    • H05K2201/086—Magnetic materials for inductive purposes, e.g. printed inductor with ferrite core
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/1003—Non-printed inductor
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10189—Non-printed connector
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227—Other objects, e.g. metallic pieces
    • H05K2201/10295—Metallic connector elements partly mounted in a hole of the PCB
    • H05K2201/10303—Pin-in-hole mounted pins
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227—Other objects, e.g. metallic pieces
    • H05K2201/1031—Surface mounted metallic connector elements
    • H05K2201/10318—Surface mounted metallic pins
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10431—Details of mounted components
    • H05K2201/10568—Integral adaptations of a component or an auxiliary PCB for mounting, e.g. integral spacer element
    • 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
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/36—Assembling printed circuits with other printed circuits
    • H05K3/368—Assembling printed circuits with other printed circuits parallel to each other

Definitions

  • the invention relates to an electronic unit for an electrical device according to the generic type of independent claim 1.
  • the invention also relates to an electrical device with an electronic unit according to the invention.
  • radio interference standards e.g. CISPR 14
  • the corresponding cable is wound around the ferrite one or more times. It is also known to provide such ferrites in connectors of cable connections.
  • DE 102009 001 079 A1 relates to a connector body for an electrical connector, particularly for the motor vehicle sector, with a plug-in body in which an electrical contact device can be accommodated and which is used to connect to a mating connector body.
  • a connector body is provided with at least one arm, on which an EMC protection can be accommodated and at least partially held in the connection area.
  • DE 102016212029 A1 discloses an EMC adapter for a vehicle electrical system, in particular for a high-voltage vehicle electrical system, which includes a plug connection between a cable-side interface unit to a cable of the vehicle electrical system and a component-side interface unit to a component of the vehicle electrical system .
  • the EMC adapter includes a first contacting area to form an electrically conductive plug-in connection with the component-side interface unit and a second contacting area to form an electrically conductive plug-in connection with the cable-side interface unit.
  • the EMC adapter includes an EMC filter arranged between the first and the second contacting area.
  • the object of the invention based on the known prior art, is to provide an electronic unit for an electrical device with at least two printed circuit boards, which has a particularly compact interference suppression device that is resistant to mechanical stresses for reducing or suppressing electromechanical interference and which can also be installed very easily and quickly is animalable.
  • the invention relates to an electronics unit for an electrical device, in particular for a motor-driven electrical device, with a first printed circuit board and with at least one second printed circuit board arranged at a distance from the first printed circuit board, in particular designed as a piggyback printed circuit board, with the first and the at least one second printed circuit board each have at least one electronic construction element and can be electrically connected by means of a plurality of rigid contact pins.
  • the contact pins are surrounded by an interference suppression means to reduce electromagnetic interference in a positive, material and/or non-positive manner. This results in a particularly advantageous way in which the interference is effectively suppressed directly at the point at which it arises, in conjunction with increased compactness and simplified assembly of the electronic components.
  • Electrical devices in the context of the invention should be understood to mean all electrically operated devices in which at least two printed circuit boards arranged electrically at a distance from one another can be used as the electronic unit according to the invention and whose rigid electrical connection between the printed circuit boards requires at least one interference suppression measure against electromagnetic interference.
  • the invention can be applied to power tools for machining workpieces using an electrically driven insert tool, such as hand or stand drills, screwdrivers, impact drills, hammer drills, planes, angle grinders, orbital sanders, polishing machines, circular, table, crosscut and jigsaws or the like, are applied.
  • an application of the invention is also conceivable in measuring devices, household appliances, gardening equipment, vehicles and airplanes, etc.
  • printed circuit board can include both a solid and a flexible circuit board with printed or etched conductor tracks, the circuit board being designed in such a way that it has one or more passive or active electronic components in the form of resistors, capacitors, coils, diodes, Transistors ren, integrated circuits, etc. carries.
  • passive or active electronic components in the form of resistors, capacitors, coils, diodes, Transistors ren, integrated circuits, etc. carries.
  • the possible configurations of the printed circuit boards of this type will not be discussed in detail here, since they are well known to those skilled in the art.
  • a piggyback printed circuit board is to be understood in particular as a printed circuit board or circuit board which, without further fastening measures on any housing parts, can be separated from a base circuit board or circuit board arranged underneath, for example by means of connectors or other form-fitting and/or non-positive fastening means such as Rastha ken, screw connections, etc. is held.
  • a material connection is to be understood, for example, as an adhesive, soldered or welded connection, while a positive connection blocks the relative movement of two components by means of appropriate design details, for example snap connections, tongue and groove connections, bayonet locks, rivets, etc., and a frictional connection is created by high static friction between two components.
  • the contact pins are part of a soldered or plug-in connection and that the interference suppression device encloses the soldered or plug-in connection at least radially. This allows a particularly compact design in connection with a very simple assembly of the circuit boards, in particular the piggyback circuit board on the base circuit board, he aims.
  • Such an embodiment of the interference suppression means is particularly suitable for damping what is known as “common mode” interference.
  • the interference suppression means can also completely enclose the soldered or plug-in connection to suppress or reduce so-called “differential mode” interference.
  • the compactness and the interference suppression effect can be increased if the interference suppression means is integrated into the soldered or plug-in connection. In particular, this results in the manufacturing advantage that no additional components have to be fitted.
  • at least one of the contact pins has at least one winding which is embedded in a lateral surface of the interference suppression means. The at least one winding of the contact pin around at least a part of the interference suppression means makes it possible to achieve a quadratically increased damping effect, which increases exponentially in the case of several windings.
  • the wire-to-board plug-in connection has proven to be particularly advantageous for a cost-effective and robust plug-in connection. In this way, the propagation of interference to peripherally connected circuit boards or circuit boards and components can also be avoided or reduced.
  • the interference suppression means preferably consists of a ferrite material and extends in its length, width and height over a range of 5 to 20 mm, preferably with a length of 10 to 20 mm, a width of 5 to 10 mm and a height of 5 up to 20 mm.
  • the first printed circuit board has power electronics and the second printed circuit board has control or regulating electronics, such as is typical for driving electric motors, in particular brushless DC motors.
  • FIG. 1 a circuit diagram of a first printed circuit board designed as a power board with an interference suppression device according to the invention in a first embodiment
  • FIG. 2 shows a schematic representation of the electronic unit according to the invention with a first circuit board designed as a power circuit board and a second circuit board designed as a control circuit board in a second embodiment
  • FIG. 4 shows a schematic representation of the first printed circuit board designed as a power board according to FIG. 3 with an interference suppression device according to the invention
  • FIGS. 1 to 4 a schematic representation of the encapsulated electronic unit according to the invention for the exemplary embodiments according to FIGS. 1 to 4
  • Fig. 7 a schematic representation of the interference suppression means according to the invention according to the first embodiment
  • Fig. 8 a schematic representation of the interference suppression means according to the invention in two further exemplary embodiments according to FIGS. 8a and 8b.
  • FIG. 1 shows a circuit diagram of an electronics unit 10 for an electrical device that is not shown in any more detail.
  • the electrical device can be used, for example, as an electric tool for processing workpieces using an electrically driven tool, such as hand or standing drills, screwdrivers, impact drills, hammer drills, planes, angle grinders, orbital sanders, polishing machines, circular, table, crosscut and jigsaws or the like, be trained.
  • an electrically driven tool such as hand or standing drills, screwdrivers, impact drills, hammer drills, planes, angle grinders, orbital sanders, polishing machines, circular, table, crosscut and jigsaws or the like.
  • measuring devices, household appliances, gardening tools, vehicles and airplanes, etc. are conceivable for an application of the electronic unit 10 according to the invention.
  • Electronics unit 10 has a first printed circuit board 12 and at least one second printed circuit board 14 (cf. Figure 2) arranged at a distance from first printed circuit board 12, at least one electronic component 16 being arranged on each of the first and the at least one second printed circuit board 12, 14.
  • resistors 18, MOSFETs 20 or other passive and active electronic components such as diodes, coils, capacitors, bipolar transistors, IGBTs, etc. can be considered as electronic components 16.
  • the electronic components 16 can also be realized by integrated circuits, such as microprocessors, ASICs, DSPs, memory modules, etc.
  • the printed circuit boards 12 and 14 can be electrically connected to one another by means of a plurality of rigid contact pins 22 of a soldered or plug-in connection 24 (cf. also FIG. 3).
  • the first circuit board 12 is designed as a power circuit board for controlling an electric motor (not shown), in particular a brushless DC motor, by means of a power bridge or power electronics 25 consisting of power transistors 20, which are connected to a high-side potential V + and a low -Side potential V- is supplied.
  • the two power transistors 20 configured as MOSFETs can be connected via electrical contacts 26, in particular a high-site gate connection 28 and a low-site gate connection 30, to generate a pulse-width-modulated control signal at the output connected to a winding, not shown, of the brushless direct-current motor 32 can be controlled.
  • a second printed circuit board 14 is used for this purpose, which sits piggyback on the first printed circuit board 12 and which is designed as a control board for controlling the power bridge 24 . Since the person skilled in the art is sufficiently familiar with corresponding regulation or control methods, they will not be discussed in any more detail. Rather, it is essential for the invention that the high clock rates of the control and power circuits can lead to high-frequency interference, which must be suppressed as effectively as possible.
  • the contact pins 22 of the soldering or plug-in connection 24 are therefore, according to the invention, surrounded by an interlocking, material and/or non-positive fit by an interference suppression device 34, in particular a ferrite, to reduce or dampen such electromagnetic interference.
  • FIG. 1 also indicates that at least one turn W of the contact pins 22 is embedded in at least part of the interference suppression means 34, with an outer part of the interference suppression means 34 enclosing the soldered or plug-in connection 24 at least radially. This will be discussed in more detail in FIG.
  • FIG. 2 shows a schematic representation of the electronic unit 10 according to the invention with a first circuit board 12 designed as a power circuit board and with a second circuit board 14 designed as a control circuit board in a second embodiment.
  • the second printed circuit board 14 is piggybacked on the first printed circuit board 12, ie the second printed circuit board 14 is without further fastening measures to any housing parts of the electrical appliance only on the first printed circuit board 12 arranged underneath by means of the contact pins 22 of the soldering or plug-in connection 24 or by means of other form-fitting and/or non-positive fastening means such as locking hooks, screw connections, etc. are fixed.
  • second circuit board 14 On the designed as a control board second circuit board 14 is a variety of electronic SMD components (SMD: Surface Mounted Device) 16 in the form of microprocessors 36 or other integrated circuits 38, Kon capacitors, resistors, fuses, etc., to just a few components as an example to name, for controlling or regulating the power electronics 25 on the positioned underneath, designed as a power board first Lei terplatte 12. Furthermore, on the second circuit board 14 plug connections 44 for data and control lines from or to sensors, buttons or other electronic assemblies of the electrical device intended.
  • SMD Surface Mounted Device
  • the first printed circuit board 12 also has corresponding components 16, for example in the form of capacitors 40 and power transistors 20.
  • the first printed circuit board 12 contains various soldered connections 24 consisting of contact pins 22 for making electrical contact with the second printed circuit board 14 (cf., inter alia, the electrical contacts 26 according to FIG. 1).
  • the second printed circuit board 14 is also held piggyback on the first printed circuit board 12 by means of the soldered connections 24 .
  • FIG. 4 shows a schematic representation of the first printed circuit board 12 according to FIG. 3, designed as a power board, with the interference suppression means 34 according to the invention.
  • the interference suppression means 34 can be pushed over the contact pins 22 in a non-positive manner, for example.
  • a form-fitting connection is also conceivable, in which the interference suppression means 34 is held on the first printed circuit board 12 via latching elements.
  • the latching elements of the interference suppression means 34 can be designed, for example, as latching hooks which engage in corresponding openings in the first printed circuit boards 12 . It is also conceivable that the first printed circuit board 12 has latching lugs that form the interference suppression means 34 grasp conclusively.
  • the interference suppression means 34 consists of a ferrite material.
  • other means and materials suitable for damping electromagnetic interference are also conceivable, such as ferromagnetic or soft-magnetic particles cast in plastic, feedthrough capacitors or the like.
  • the interference suppression means 34 and/or the soldered or plug-in connection 24 with their contact pins 22 particularly preferably extend over a range of approximately 5 to 20 mm in terms of their length, width and height.
  • the length L of the interference suppression means is approximately 15 mm, for example, while its width B is approximately 8 and its height H is approximately 10 mm.
  • the interference suppression means has an oval, hollow-cylindrical cross-section with a thickness of its lateral surface 44 of approximately 3 mm.
  • the dimensions and the shape of the interference suppression means 34 are largely dependent on the dimensions and the structure of the soldered or plug-in connection 24 .
  • the cross-section of the interference suppression means 34 is essentially cuboid or circular-cylindrical. Any other polygonal shapes are also conceivable.
  • the interference suppression means 34 has a length L of 10 to 20 mm, a width B of 5 to 10 mm and a height H of 5 to 20 mm.
  • the thickness of the lateral surface 44 can also vary between 2 and 5 mm.
  • FIG. 5 shows a schematic representation of the second circuit board 14 designed as a control circuit board in a third exemplary embodiment, with the interference suppression means 34 now being a soldered or plug-in connection 24 designed as a wire-to-board plug-in connection 46 radially in terms of shape, material and/or or positively closes.
  • the propagation of interference to peripherally connected circuit boards and components can also be reduced or avoided if the interference suppression medium 34 is integrated into the wire-to-board connector 46 . Integration into the plug-in connection 46 results in the advantage in terms of manufacturing technology that no additional components have to be fitted.
  • FIG. 6 shows a schematic representation of the electronic unit 10 according to the invention cast in a casting compound for the exemplary embodiments according to FIGS. 1 to 4.
  • FIG. 7 shows the interference suppression device 34 according to the invention according to FIG. 1 in a detailed, schematic view.
  • the contact pins 22 of the solder or plug-in connection 24 each have a winding W, which is embedded in the surface 44 of the interference suppression device 34, while an outer part of the Ent interfering means 34 encloses the solder or plug-in connection 24 at least radially.
  • the interference suppression means 34 is advantageously injected around the contact pins 22. Due to the winding W of the contact pins 22 embedded in the interference suppression means 34, a quadratically increased interference attenuation can be achieved. It is also conceivable to increase the number of turns W for the expo-potential damping of the disturbance.
  • Figure 8 shows the interference suppression means 34 according to the invention in two further exemplary embodiments, with the interference suppression means 34 in Figure 8a being designed as a ferrite block 46 of length L, width B and height H, which radially encloses each individual contact pin 22 of the soldered or plug-in connection 24, while FIG. 8b shows the combination of a ferrite block 46 according to FIG. 8a and an interference suppression means 34 according to FIG.
  • the ferrite block 46 can be designed in such a way that it can be pushed over the contact pins 22 in a non-positive manner.
  • a non-releasable form-fitting encapsulation of the contact pins 22 with the interference suppression means 34 is conceivable.
  • the anti-interference means 34 which is designed as an oval, hollow-cylindrical body, can also be attached to the ferrite block 46 with corresponding latching means.
  • the exemplary embodiment according to FIG. 8a particularly advantageously allows the damping or suppression of so-called “differential mode” interference
  • both “common mode” and “differential mode” interference can be damped or suppressed.
  • the exemplary embodiments according to FIGS. 1 to 5 are therefore more suitable for suppressing or damping pure “common mode” interference.
  • the terms “common mode” and “differential mode” are well known to those skilled in the art, so that they will not be discussed in detail. It should only be pointed out that the term “common mode” means rectified interference in the individual contact pins 22, while in “differential mode” they run in the opposite direction.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Combinations Of Printed Boards (AREA)

Abstract

L'invention concerne une unité électronique (10) pour un appareil électrique, en particulier pour un appareil électrique à moteur, comprenant une première carte de circuit imprimé (12) et au moins une deuxième carte de circuit imprimé (14) espacée de la première carte de circuit imprimé (12), se présentant en particulier sous la forme d'une carte fille, la première et la ou les deuxièmes cartes de circuits imprimés (12, 14) présentant chacune au moins un composant électronique (16) et pouvant être reliées électriquement au moyen d'une pluralité de broches de contact (22) rigides. Selon l'invention, les broches de contact (22) sont entourées, par complémentarité de forme, par liaison de matière et/ou à force, par un moyen antiparasite (34) destiné à réduire les interférences électromagnétiques. L'invention concerne en outre un appareil électrique comprenant une unité électronique (10) selon l'invention.
PCT/EP2021/066731 2020-07-09 2021-06-21 Unité électronique pour appareil électrique Ceased WO2022008210A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020208631.1 2020-07-09
DE102020208631.1A DE102020208631A1 (de) 2020-07-09 2020-07-09 Elektronikeinheit für ein Elektrogerät

Publications (1)

Publication Number Publication Date
WO2022008210A1 true WO2022008210A1 (fr) 2022-01-13

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ID=76708201

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/066731 Ceased WO2022008210A1 (fr) 2020-07-09 2021-06-21 Unité électronique pour appareil électrique

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DE (1) DE102020208631A1 (fr)
WO (1) WO2022008210A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021122176A1 (de) 2021-08-26 2023-03-02 Edscha Engineering Gmbh Antriebseinheit mit einer Steuereinrichtung

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