EP4042548A1 - Moteur électrique comprenant une carte de circuits imprimés - Google Patents

Moteur électrique comprenant une carte de circuits imprimés

Info

Publication number
EP4042548A1
EP4042548A1 EP20772198.6A EP20772198A EP4042548A1 EP 4042548 A1 EP4042548 A1 EP 4042548A1 EP 20772198 A EP20772198 A EP 20772198A EP 4042548 A1 EP4042548 A1 EP 4042548A1
Authority
EP
European Patent Office
Prior art keywords
circuit board
electric motor
stator housing
motor according
layers
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.)
Pending
Application number
EP20772198.6A
Other languages
German (de)
English (en)
Inventor
Joachim Nikola
Martin Melzer
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.)
SEW Eurodrive GmbH and Co KG
Original Assignee
SEW Eurodrive GmbH and Co KG
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 SEW Eurodrive GmbH and Co KG filed Critical SEW Eurodrive GmbH and Co KG
Publication of EP4042548A1 publication Critical patent/EP4042548A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • 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
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/04—Machines with one rotor and two stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/30—Windings characterised by the insulating material
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
    • H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/02—Casings or enclosures characterised by the material thereof
    • 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
    • H02K11/04—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for rectification
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
    • H02K2211/03—Machines characterised by circuit boards, e.g. pcb

Definitions

  • the invention relates to an electric motor with a printed circuit board.
  • An electric power steering device is known from DE 102006 043 194 A1 as the closest prior art.
  • a control unit is known from US 2013/0 301 229 A1.
  • a drive unit is known from DE 102011 056 365 A1.
  • a vehicle control is known from US 2010/0 314 192 A1.
  • a manufacturing method for an electric motor is known from WO 2009/069 103 A2.
  • the invention is therefore based on the object of developing an electric motor with integrated electronics.
  • the object is achieved with the electric motor according to the features specified in claim 1.
  • the first printed circuit board has layers with conductor tracks, the layers being spaced from one another by first layers of insulating material, in particular of fiber-reinforced plastic, in particular epoxy material, an insulating layer being arranged between two of the layers .
  • the advantage here is that simple production is made possible, but this creates an insulating layer that functions as a thermal barrier that is effective between the two sides of the first printed circuit boards.
  • the insulating layer has a greater layer thickness than the first layers.
  • the insulating layer is made of the same material as the first layers, in particular so that the first circuit board is designed as a multi-layer circuit board, the layers of which are not evenly, in particular regularly, spaced from one another, in particular where the material is fiber-reinforced plastic, especially epoxy material.
  • the advantage here is that simple production is made possible.
  • the insulating layer is made of a different material than the first layers, in particular the material of the insulating layer being a plastic, in particular of the enclosed gas bubbles, in particular having gas volumes.
  • the insulating layer made of a thermally even less thermally conductive material than the other material of the first printed circuit board arranged between the layers can be used.
  • the electric motor has a stator housing in which the stator winding of the electric motor is received, and a cover part and a retaining ring which is arranged between the cover part and the stator housing and in which the first printed circuit board is received.
  • a space for electronics, in particular for an inverter can be arranged integrated in the motor.
  • the first printed circuit board and second printed circuit boards are arranged in a spatial area of the electric motor which is delimited, in particular enclosed, by the stator housing, the retaining ring and the cover part.
  • the advantage here is that the electronics are arranged in a protected manner in the room area.
  • the first and second circuit boards are aligned parallel to one another and spaced apart from one another, in particular the axis of rotation of the rotatably mounted rotor shaft of the electric motor being aligned parallel to the normal direction of the first circuit board.
  • the second circuit boards are arranged on the side of the first circuit board facing away from the stator housing.
  • the advantage here is that the second printed circuit boards can be exposed to a lower temperature than the power module and / or the stator winding of the electric motor.
  • the first printed circuit board is arranged between the stator housing part and the second printed circuit boards.
  • the advantage here is that the first printed circuit board has power electronics on the side facing the stator housing part and has signal electronics on the side facing away from the stator housing part, which generate the control signals for the controllable semiconductor switches of the power module. Signal electronics can also be arranged on the second printed circuit board.
  • a power module is fitted which is connected to the stator housing part in a thermally conductive manner. The advantage here is that the heat can be dissipated to the environment together with the heat loss generated by the stator winding.
  • the power module in particular and the components assembled on the first circuit board on the side of the first circuit board facing the stator housing part, can be operated up to a first temperature, in particular the first temperature is the maximum permissible operating temperature for the power module, with the on the side of the first circuit board assembled on the first circuit board on the side facing away from the stator housing part and the components assembled on the second circuit boards can be operated up to a second temperature, in particular the second temperature is the maximum permissible operating temperature for these components, the second Temperature is lower, in particular at least more than 10 ° C. lower than the first temperature.
  • the advantage here is that the signal electronics can be operated at a lower temperature level and heat can be separately removed from the surroundings.
  • the second circuit boards are received in the cover part.
  • the cover part can be precompleted with the second printed circuit boards and then connected to the retaining ring together with the first printed circuit board.
  • the electronics area can thus be connected to the stator housing part during assembly.
  • the first printed circuit board can be fastened to the stator housing part, in particular screwed on by means of screws, before the cover part with the second printed circuit boards arranged precompletely therein is plugged onto the retaining ring.
  • the power module can be pressed onto the stator housing part when the first printed circuit board is being fastened, with thermal paste being able to be arranged between the power module and the stator housing part in order to improve the heat transfer.
  • the first circuit board is connected to the second circuit board next to the first circuit board by means of an electrical plug connection, each second circuit board being connected to the second circuit board next to it by means of a respective electrical plug connection.
  • the retaining ring is made in one piece or in several pieces.
  • the advantage here is that the circuit board can either be clamped between two pieces or, in the case of a one-piece design, can be pressed against a step of the retaining ring.
  • the retaining ring is tightly connected to the stator housing part by means of an intermediate seal, which also functions as a heat barrier.
  • an intermediate seal which also functions as a heat barrier.
  • the retaining ring is tightly connected to the cover part by means of an intermediate seal, which also functions as a heat barrier.
  • an intermediate seal which also functions as a heat barrier.
  • each of the second printed circuit boards has two axially continuous recesses that are arranged diametrically opposite one another with respect to the axis of rotation of the rotor shaft.
  • stator housing part, the retaining ring and the cover part are made of metal, in particular as a cast part, in particular wherein the cover part has cooling ribs on its outside.
  • the advantage here is that the thermal conductivity and thus the efficiency of the heat dissipation to the environment is high. Further advantages result from the subclaims.
  • the invention is not restricted to the combination of features of the claims. For the person skilled in the art, there are further sensible possible combinations of claims and / or individual claim features and / or features of the description and / or the figures, in particular from the task and / or the task posed by comparison with the state of the art.
  • a first printed circuit board 40 is shown schematically in cross section.
  • the first circuit board 40 is shown schematically in plan view.
  • FIG. 2 An alternative embodiment to FIG. 2 is shown in FIG.
  • FIG. 4 a cross section through an axial end region of an electric motor, which has a first printed circuit board 40, is shown schematically.
  • FIG. 5 a partially transparent oblique view of the end area belonging to FIG. 4 is shown schematically.
  • the circuit board 40 has several layers 1 with conductor tracks, the layers being spaced from one another by layers of insulating material 2, in particular fiber-reinforced plastic, in particular epoxy material.
  • An insulating layer 3 is attached between two of the layers, which in a first embodiment is made of the same material as the layers, in particular so that the circuit board 40 resembles a multi-layer circuit board, the layers 1 of which are not evenly spaced from one another.
  • the material is therefore fiber-reinforced plastic, in particular epoxy material.
  • the insulating layer 3 is thicker, that is to say has a greater wall thickness than the other layers.
  • the insulating layer 3 is made of a different material than the layers.
  • a plastic that has enclosed gas bubbles, in particular gas volumes, is suitable as the material of the insulating layer 3.
  • the insulating layer 3 functions as a thermal barrier.
  • the circuit board 40 has no vias in a central area 20, but only in an edge area 21 surrounding the central area 20.
  • the vias arranged there are irregularly spaced from one another and impair the effect as a heat barrier in the edge area there.
  • a rectangular circuit board 40 can also be used, as shown in FIG. 3, the central area 20 then preferably also being rectangular.
  • the circuit board is arranged in an electric motor. If the electric motor has a cuboid exterior, the printed circuit board 40 according to FIG. 3 is used.
  • the printed circuit board 40 is designed according to FIG.
  • the circuit board 40 is received in a retaining ring 45 which is arranged between a stator housing 44 and a cover part 46 of the electric motor.
  • the stator of the electric motor is arranged within the stator housing 44.
  • a space for electronics is provided on the stator housing 44 and is surrounded by the stator housing 44, the retaining ring 45 and the cover part 46.
  • the printed circuit board 40 As the first printed circuit board, but also second printed circuit boards 47, which are also equipped with components.
  • the first circuit board 40 and the further circuit boards 47 are axially spaced from one another and are arranged parallel to one another.
  • the axial direction is parallel to the axis of rotation of the rotor shaft of the electric motor, which is arranged radially inside the stator.
  • the second circuit boards 47 are arranged on the side of the first circuit board 40 facing away from the stator housing 44.
  • the electronics include an inverter, the controllable semiconductor switches of which are integrated in a line module 42.
  • the power module 42 is connected to the stator housing 44 in a thermally conductive manner on its side facing away from the first printed circuit board 40.
  • the heat loss from the semiconductor switches that is to say from the power module, can thus be dissipated to the environment via the stator housing.
  • the heat loss from the stator winding of the electric motor is also dissipated to the environment via the stator housing.
  • the power module is fitted on the printed circuit board 40.
  • further components 43 are also fitted which can be operated at a first temperature.
  • components 41 are fitted which can be operated up to a second temperature, which, however, is lower than the first temperature.
  • the heat dissipation of the spatial area, in particular of these components, takes place via the cover part 46.
  • Stator housing 44, retaining ring 45 and cover part 46 are each made of metal, in particular as a cast part.
  • the retaining ring 45 is tightly connected both to the cover part 46 and to the stator housing part 44 by means of a respective intermediate seal.
  • the first circuit board 40 and the second circuit boards 47 are connected to their respective closest neighbors by means of electrical plug connections 48.
  • the second circuit boards 47 are spaced apart from one another by means of spacer bolts or spacer sleeves.
  • FIG. 5 shows a partially transparent oblique view belonging to FIG.
  • the B-side end area is thus thermally separated from the remaining area of the engine.
  • the normal direction of the circuit board plane is parallel to the axis of rotation of the rotor shaft.
  • the retaining ring 45 can be designed in two or more pieces instead of in one piece, the pieces then being connected to one another in a sealed manner, in particular by means of a respective seal.
  • a fan is arranged within the space area. In this way, the air there can be circulated and thermal leveling can be achieved as a result.
  • the second printed circuit boards 47 have axially continuous recesses. These recesses are made sufficiently large so that the flow resistance is only insignificant.
  • Each of the second printed circuit boards 47 preferably has two recesses arranged diametrically opposite one another on the respective printed circuit board 47, so that simple circulation can be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

L'invention concerne un moteur électrique comprenant une carte de circuits imprimés, la première carte de circuits imprimés comportant des couches comprenant des chemins conducteurs ; les couches sont espacées les unes des autres par des premières couches de matériau isolant, en particulier une matière plastique renforcée par des fibres, plus particulièrement une matière époxyde ; et une couche isolante est disposée entre deux des couches.
EP20772198.6A 2019-10-08 2020-09-11 Moteur électrique comprenant une carte de circuits imprimés Pending EP4042548A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019006990 2019-10-08
PCT/EP2020/025407 WO2021069093A1 (fr) 2019-10-08 2020-09-11 Moteur électrique comprenant une carte de circuits imprimés

Publications (1)

Publication Number Publication Date
EP4042548A1 true EP4042548A1 (fr) 2022-08-17

Family

ID=72521561

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20772198.6A Pending EP4042548A1 (fr) 2019-10-08 2020-09-11 Moteur électrique comprenant une carte de circuits imprimés

Country Status (5)

Country Link
US (1) US20230253854A1 (fr)
EP (1) EP4042548A1 (fr)
CN (1) CN114365402A (fr)
DE (1) DE102020005576A1 (fr)
WO (1) WO2021069093A1 (fr)

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4246212B2 (ja) * 2006-04-21 2009-04-02 三菱電機株式会社 電動式パワーステアリング装置
ITBO20070791A1 (it) 2007-11-30 2009-06-01 Spal Automotive Srl Macchina elettrica rotante e metodo di assemblaggio della stessa.
JP5397658B2 (ja) 2008-02-12 2014-01-22 株式会社ジェイテクト 車両用操舵装置及びそのサブアセンブリの移送方法
JP5404261B2 (ja) * 2009-04-16 2014-01-29 モレックス インコーポレイテド 冷却装置、電子基板、電子機器
DE102010005767B4 (de) * 2010-01-25 2019-10-31 Sew-Eurodrive Gmbh & Co Kg Umrichtermotor
EP2453558B1 (fr) * 2010-11-11 2022-09-14 Grundfos Management a/s Groupe motopompe
JP5692588B2 (ja) 2010-12-28 2015-04-01 株式会社デンソー 駆動装置
JP5962061B2 (ja) * 2012-02-28 2016-08-03 株式会社ジェイテクト 電動モータの制御装置及びこれを備えた車両用操舵装置
DE102012204919A1 (de) * 2012-03-27 2013-10-02 Beckhoff Automation Gmbh Statorvorrichtung für einen linearmotor und lineares transportsystem
EP2848103B1 (fr) 2012-05-08 2017-02-01 Sew-Eurodrive GmbH & Co. KG Appareil électrique comprenant une partie boîtier
JP6007579B2 (ja) 2012-05-10 2016-10-12 株式会社ジェイテクト 制御装置および同装置を備えるモーターユニット
TWI538359B (zh) * 2015-02-25 2016-06-11 佛山市建準電子有限公司 馬達及其阻隔件
DE102015121166A1 (de) * 2015-12-04 2017-06-08 Ebm-Papst Mulfingen Gmbh & Co. Kg Abdeckvorrichtung für ein Elektronikgehäuse eines Elektromotors
JP6444495B2 (ja) * 2016-03-18 2018-12-26 三菱電機株式会社 電動パワーステアリング駆動装置
JP6524023B2 (ja) * 2016-06-01 2019-06-05 日立オートモティブシステムズ株式会社 電動駆動装置及び電動パワーステアリング装置
JP2017224761A (ja) * 2016-06-16 2017-12-21 株式会社ジェイテクト 回路モジュールおよび機電一体型モータユニット
DE102018100139A1 (de) 2018-01-04 2019-07-04 Zkw Group Gmbh Verfahren zum Herstellen einer mehrlagigen Leiterplatte sowie Leiterplatte
JP6892080B2 (ja) * 2018-08-09 2021-06-18 東京ロボティクス株式会社 ロボットアーム及びロボット

Also Published As

Publication number Publication date
CN114365402A (zh) 2022-04-15
WO2021069093A1 (fr) 2021-04-15
US20230253854A1 (en) 2023-08-10
DE102020005576A1 (de) 2021-04-08

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