EP3738198A1 - Kfz-nebenaggregat-elektromotor - Google Patents
Kfz-nebenaggregat-elektromotorInfo
- Publication number
- EP3738198A1 EP3738198A1 EP18814869.6A EP18814869A EP3738198A1 EP 3738198 A1 EP3738198 A1 EP 3738198A1 EP 18814869 A EP18814869 A EP 18814869A EP 3738198 A1 EP3738198 A1 EP 3738198A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- motor
- stator
- electric motor
- electronics unit
- contact
- 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.)
- Withdrawn
Links
Classifications
-
- 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
-
- 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
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- 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
-
- 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 a motor vehicle auxiliary machine electric motor, for example for an electric gas pump of a motor vehicle (motor vehicle).
- Such an electric motor comprises a permanent magnet motor rotor and a motor stator with a ferromagnetic stator body and at least one stator coil. Further, the electric motor has a motor electronics unit, which is electrically connected to the stator coil to drive the stator coil and thereby drive the motor rotor.
- the engine electronics unit includes an external ground terminal to connect the engine electronics unit to an external vehicle ground.
- EMC electromagnetic compatibility
- the motor vehicle auxiliary motor comprises a permanent magnet motor rotor and a motor stator with a ferromagnetic stator body and at least one stator coil.
- the motor rotor may be a preferably ferromagnetic rotor body with separate permanent magnets. Alternatively, the motor rotor may also comprise a monolithic permanent magnetic rotor body.
- the automotive accessory electric motor comprises a motor electronics unit which is electrically connected to the stator coil to drive the stator coil and thereby drive the motor rotor.
- the engine electronics comprises a plurality of power semiconductors in order to commutate the electrical energy for driving the stator coil.
- the engine electronics unit is electrically connected to an external vehicle ground via an external ground terminal to facilitate powering the engine electronics unit.
- the motor electronics unit has an internal ground contact, which is electrically connected directly to the external ground terminal via a low-resistance electrical connection.
- the motor vehicle accessory electric motor according to the invention comprises a contact spring, which creates a direct low-resistance electrical connection between the stator body and the internal ground contact of the engine electronics unit and thus the vehicle mass.
- the stator can act as an electromagnetic shield, whereby the emitted electromagnetic radiation of the electric motor is dramatically reduced and consequently the EMC properties of the electric motor can be significantly improved.
- the motor vehicle accessory electric motor according to the invention reliably and permanently enables good EMC properties even when using an electrically insulating plastic housing, which thus can not function as an electrical shield, and even at high engine speeds, in which the electromagnetic interference is particularly pronounced.
- the inventive mechanically flexible contact spring thus enables a particularly reliable electrical connection between the internal ground contact and the stator body.
- the stator of the motor stator is formed of a laminated core, whereby eddy currents are minimized in the stator.
- the individual sheets of the laminated core are in this case electrically connected to each other, for example via a positive connection by corresponding stampings.
- the stator has only a single stator coil. This allows a very compact and inexpensive design of the electric motor.
- the contact spring is a helical spring, which has a high flexibility in the axial and in the radial direction and thus can compensate for both axial and radial displacements between the internal ground contact and the stator body.
- the engine electronics on a circuit board on which the internal ground contact is arranged.
- the printed circuit board allows a particularly simple arrangement of the electronics.
- the Printed circuit board consists for example of a fiber-reinforced plastic and includes interconnects for the electrical connection of the individual electronic components.
- the internal ground contact is formed by a non-insulated strip conductor region of the printed circuit board, which is electrically connected directly to the external ground connection. This allows a simple and inexpensive execution of the internal ground contact, for which no additional contact elements must be provided.
- the contact spring is attached to the circuit board, for example by a solder joint, and is applied to the stator only.
- This allows a very simple installation of the contact spring.
- stress-induced mechanical damage to the contact spring or its attachment can be avoided by the one-sided attachment of the contact spring.
- a suitable axial bias of the contact spring By a suitable axial bias of the contact spring, a reliable electrical connection between the internal ground contact and the stator can be ensured despite the one-sided attachment.
- the figure shows a motor vehicle accessory electric motor 10, for example for use in a degassing pump of a motor vehicle fuel tank.
- degassing pumps are operated at speeds greater than 10,000 rpm and therefore are particularly prone to the generation of electromagnetic interference radiation.
- the electric motor 10 comprises a housing 11, which in the present exemplary embodiment consists of electrically insulating plastic, a motor stator 12, a permanent magnet motor rotor 14 with a rotor shaft 16, and a motor electronics unit 18.
- the motor stator 12 comprises a stator body 20, comprising a laminated core of a plurality of electrically interconnected ferromagnetic sheets 22, and comprises a single stator coil 24.
- the motor electronics unit 18 includes a printed circuit board 28, on which motor electronics 30 is arranged.
- the engine electronics 30 are electrically connected to the stator coil 24 via a connector 26 to drive the stator coil 24 to thereby drive the motor rotor 14.
- the engine electronics unit 18 includes an external ground terminal 32 that is electrically connected to an external vehicle ground 34.
- the printed circuit board 28 comprises a conductor track 36 which connects the external ground terminal 32 electrically to the engine electronics 30.
- the printed circuit board 28 has a non-insulated
- Track area 38 of the conductor 36 which forms an internal ground contact 40 of the engine electronics unit 18.
- the internal ground contact 40 is electrically connected to the stator body 20 via a contact spring 42, which in the present embodiment is a helical spring made of a material having a high electrical conductivity.
- the contact spring 42 is fixed to the internal ground contact 40 with a first axial end 44, for example by a solder connection, and contacts the stator body 20 with a second opposing axial end 46.
- the contact spring is axially biased to provide both axial and radial displacements between the stator and stator Stator body 20 and the
- the contact spring 40 provides an electrical potential equalization between the stator 20 and the internal ground contact 40 and thus a potential equalization between the stator 20 and the vehicle ground 34.
- Flier discard the stator 20 can act as an electromagnetic shield, whereby the EMC properties of the stator 20
- Electric motor 10 can be significantly improved.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Motor Or Generator Frames (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018100242.4A DE102018100242A1 (de) | 2018-01-08 | 2018-01-08 | KFZ-Nebenaggregat-Elektromotor |
| PCT/EP2018/083484 WO2019134779A1 (de) | 2018-01-08 | 2018-12-04 | Kfz-nebenaggregat-elektromotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3738198A1 true EP3738198A1 (de) | 2020-11-18 |
Family
ID=64606998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18814869.6A Withdrawn EP3738198A1 (de) | 2018-01-08 | 2018-12-04 | Kfz-nebenaggregat-elektromotor |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20210067013A1 (de) |
| EP (1) | EP3738198A1 (de) |
| JP (1) | JP2021510057A (de) |
| CN (1) | CN111801878B (de) |
| DE (1) | DE102018100242A1 (de) |
| WO (1) | WO2019134779A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020104765A1 (de) | 2020-02-24 | 2021-08-26 | Minebea Mitsumi Inc. | Ventil-Antriebsvorrichtung und Ventileinrichtung zur Steuerung eines Fluidstroms |
| CN115514163A (zh) * | 2022-08-19 | 2022-12-23 | 芜湖飞龙汽车电子技术研究院有限公司 | 一种车辆电子水泵emc接地结构及其接地方法 |
| JPWO2024176393A1 (de) * | 2023-02-22 | 2024-08-29 |
Family Cites Families (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3963949A (en) * | 1972-10-26 | 1976-06-15 | General Electric Company | Laminated structure with insulating member formed in situ thereon |
| US3983621A (en) * | 1974-10-21 | 1976-10-05 | General Electric Company | Methods of making fractional horsepower motors |
| US6348752B1 (en) * | 1992-04-06 | 2002-02-19 | General Electric Company | Integral motor and control |
| DE19651920A1 (de) * | 1996-12-13 | 1998-06-18 | Philips Patentverwaltung | Elektromotorische Verstellvorrichtung |
| JP2000134901A (ja) * | 1998-10-23 | 2000-05-12 | Aichi Electric Co Ltd | 永久磁石モータとそのセンサレス駆動回路装置 |
| JP3793965B2 (ja) * | 2002-08-27 | 2006-07-05 | 愛三工業株式会社 | トルクモータのステータコア |
| JP2005073409A (ja) * | 2003-08-25 | 2005-03-17 | Mitsumi Electric Co Ltd | ステッピングモータ |
| KR101033579B1 (ko) * | 2004-03-03 | 2011-05-11 | 엘지전자 주식회사 | 드럼세탁기용 아웃터로터형 모터의 스테이터 구조 |
| JP4274473B2 (ja) * | 2004-06-14 | 2009-06-10 | ミネベア株式会社 | アクチュエータ |
| US7109621B2 (en) * | 2004-08-20 | 2006-09-19 | A. O. Smith Corporation | Electric motor having a printed circuit board attached to a stator and at least partially supporting a bearing |
| DE102006011674A1 (de) * | 2006-03-14 | 2007-09-20 | Arvinmeritor Light Vehicle Systems-France | Leiterplatte mit Masseleiter für einen Elektromotor, und Elektromotor |
| EP1834917B1 (de) * | 2006-03-16 | 2015-05-20 | ThyssenKrupp Aufzugswerke GmbH | Aufzugantrieb mit einem Elektromotor |
| DE102007040734B4 (de) * | 2007-08-29 | 2009-05-07 | Audi Ag | Federbein für eine Radaufhängung von Kraftfahrzeugen |
| JP5110172B2 (ja) * | 2008-12-11 | 2012-12-26 | パナソニック株式会社 | ブラシレスモータおよびそれを備えた電気機器 |
| JP5629875B2 (ja) * | 2010-08-17 | 2014-11-26 | 日本電産株式会社 | モータ |
| JP6112983B2 (ja) * | 2012-07-13 | 2017-04-12 | アスモ株式会社 | 回転電機 |
| EP2750267B1 (de) * | 2012-12-27 | 2018-01-24 | Grundfos Holding A/S | Pumpenaggregat |
| DE102013001314A1 (de) * | 2013-01-26 | 2014-07-31 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Rotierende elektrische Maschine |
| MX351551B (es) * | 2013-02-04 | 2017-10-19 | Hanon Systems | Motor de corriente directa (dc) sin escobillas con emisiones reducidas. |
| DE102013105965B4 (de) * | 2013-06-07 | 2023-08-03 | Minebea Mitsumi Inc. | Stator mit Erdungskontakt |
| CN103701291B (zh) * | 2013-12-27 | 2016-07-06 | 富阳新马工具有限公司 | 风扇用交流输入无刷直流电动机 |
| WO2015197574A1 (de) * | 2014-06-26 | 2015-12-30 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Elektrische maschine |
| US10008909B2 (en) * | 2015-04-24 | 2018-06-26 | Asmo Co., Ltd. | Motor driving control device for vehicle |
| CN108496300B (zh) * | 2016-02-22 | 2022-05-27 | 深圳市大疆灵眸科技有限公司 | 电机位置感测 |
| JP6676144B2 (ja) * | 2016-03-14 | 2020-04-08 | 三菱電機株式会社 | 電動パワーステアリング装置 |
| JP6666788B2 (ja) * | 2016-05-12 | 2020-03-18 | 株式会社ミクニ | 駆動装置およびポンプ装置 |
| DE102016223844B4 (de) * | 2016-11-30 | 2022-01-27 | Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg | Elektromotor und Kühlerlüftermodul mit einem solchen Elektromotor |
| US10651709B2 (en) * | 2017-05-09 | 2020-05-12 | Gentherm Incorporated | Fan arbor grounding |
-
2018
- 2018-01-08 DE DE102018100242.4A patent/DE102018100242A1/de not_active Withdrawn
- 2018-12-04 WO PCT/EP2018/083484 patent/WO2019134779A1/de not_active Ceased
- 2018-12-04 CN CN201880085553.8A patent/CN111801878B/zh active Active
- 2018-12-04 EP EP18814869.6A patent/EP3738198A1/de not_active Withdrawn
- 2018-12-04 US US16/960,091 patent/US20210067013A1/en not_active Abandoned
- 2018-12-04 JP JP2020536887A patent/JP2021510057A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018100242A1 (de) | 2019-07-11 |
| US20210067013A1 (en) | 2021-03-04 |
| CN111801878B (zh) | 2023-05-16 |
| WO2019134779A1 (de) | 2019-07-11 |
| CN111801878A (zh) | 2020-10-20 |
| JP2021510057A (ja) | 2021-04-08 |
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