US20140010684A1 - Electrical motor vehicle coolant pump - Google Patents

Electrical motor vehicle coolant pump Download PDF

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Publication number
US20140010684A1
US20140010684A1 US13/979,377 US201113979377A US2014010684A1 US 20140010684 A1 US20140010684 A1 US 20140010684A1 US 201113979377 A US201113979377 A US 201113979377A US 2014010684 A1 US2014010684 A1 US 2014010684A1
Authority
US
United States
Prior art keywords
partition wall
cooling lug
circuit board
coolant pump
electric
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.)
Abandoned
Application number
US13/979,377
Other languages
English (en)
Inventor
Witold Joschko
Thomas Joachim Gibat
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.)
Pierburg Pump Technology GmbH
Original Assignee
Pierburg Pump Technology 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 Pierburg Pump Technology GmbH filed Critical Pierburg Pump Technology GmbH
Assigned to PIERBURG PUMP TECHNOLOGY GMBH reassignment PIERBURG PUMP TECHNOLOGY GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GIBAT, THOMAS JOACHIM, MR., JOSCHKO, WITOLD, MR.
Publication of US20140010684A1 publication Critical patent/US20140010684A1/en
Abandoned legal-status Critical Current

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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
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/209—Heat transfer by conduction from internal heat source to heat radiating structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0686—Mechanical details of the pump control unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5813—Cooling the control unit

Definitions

  • the present invention relates to an electric motor vehicle coolant pump for supplying coolant to an internal combustion engine, wherein the brushless electromotor is commutated electronically.
  • An electric motor vehicle coolant pump having a brushless, electronically commutated electromotor as the drive motor comprises control electronics and power semiconductors that can generate heat during operation.
  • a coolant pump runs practically all the time, albeit at different speeds, during the operation of a motor vehicle internal combustion engine to be supplied with coolant. Under adverse conditions, for example, when the internal combustion engine is under full load, at low motor vehicle speed, and at high outside temperatures, the coolant pump must run under full load for extended periods. The significant thermal losses of the power semiconductors have to here be dissipated in a reliable manner to avoid the destruction of the power semiconductors.
  • An aspect of the present invention is to provide an electric motor vehicle coolant pump having an electronically commutated electromotor, wherein the power semiconductors are well cooled, and the cooling lugs of the power semiconductors are contacted directly with a conductor strip on the circuit board.
  • the present invention provides an electric coolant pump for a motor vehicle which includes a wet section in which is arranged an impeller and a permanently magnetized motor rotor of an electronically commutated electromotor, a dry section in which is arranged an electric circuit board comprising a plurality of power semiconductors which each comprise a cooling lug, and a partition wall lying in a traverse plane.
  • the partition wall is arranged to separate the wet section and the dry section.
  • the plurality of power semiconductors are each arranged on a proximal side of the electric circuit board facing the partition wall.
  • Each cooling lug is arranged on a cooling lug conductor strip.
  • the partition wall comprises a heat conductor which is configured to be electrically non-conductive. The heat conductor is arranged to rest directly on a respective cooling lug conductor strip.
  • FIG. 1 shows a schematic longitudinal section of a motor vehicle coolant pump having a partition wall and a circuit board with power semiconductors
  • FIG. 2 shows an enlarged illustration of the partition wall and the circuit board of FIG. 1 ;
  • FIG. 3 shows a top plan view on the proximal side of the circuit board of the FIGS. 1 and 2 .
  • the coolant pump includes a wet section in which an impeller and a permanently magnetically, i.e., continuously, excited motor rotor of the electronically commutated electric motor are arranged.
  • the coolant pump further has a dry section in which, among others, an electric circuit board is arranged which supports a plurality of power semiconductors with a respective cooling lug for each.
  • the power semiconductors serve to directly drive the stator-side motor coils.
  • the wet section and the dry section are separated by an electrically conductive partition wall lying in a transverse plane.
  • the partition wall can, for example, be made of an electrically conductive material, but can also be made of electrically non-conductive material, for example, a plastics material.
  • a circuit board is arranged so as to lie in a transversal plane adjacent to the partition wall, wherein the power semiconductors are situated on the proximal side of the circuit board.
  • the electric terminals of the power semiconductors, including the cooling lugs, which each also represent an electric terminal, are soldered to corresponding conductor strips on the circuit board.
  • Each of the cooling lugs of the power semiconductors is arranged on a respective individual conductor strip and is soldered thereto, i.e., the cooling lugs are electrically separated from each other.
  • the conductor strips connected with the cooling lugs rest on the partition wall with their portions protruding beyond the surface of the respective cooling lug, wherein an electrically non-conductive heat conducting means is provided between the partition wall and the conductor strips, which electrically insulates the conductor strips from the partition wall, but conducts heat well.
  • a heat conducting film, a heat conducting paste or a heat conducting adhesive are particularly suited as heat conducting means.
  • the conductor strip onto which the cooling lug is soldered must thus have a larger surface area than the cooling lug itself and/or than the area of the cooling lug connected with the conductor strip. Only the portion of the respective conductor strip extending beyond the cooling lug rests on the electrically non-conductive heat conducting means which in turn rests immediately on the partition wall.
  • the wet section is provided on the side of the partition wall opposite the circuit board, which is the reason why the coolant circulating there can dissipate large heat quantities from the partition wall.
  • the heat flow of waste heat from the power semiconductor thus flows from its cooling lug via the conductor strip, onto which the cooling lug is soldered, and the electrically non-conductive heat conducting means to the partition wall, from where the heat is dissipated by the coolant.
  • an effective cooling of the power semiconductors is possible, while the cooling lugs of the power semiconductors are each still electrically connected or soldered to an individual conductor strip of the circuit board.
  • the partition wall can, for example, comprise a respective semiconductor recess for each semiconductor into which the semiconductor extends axially.
  • the semiconductor recesses are necessary so that the base area of the partition wall can rest directly on the conductor strip with interposition of the heat conducting means.
  • On the side of the circuit board facing the partition wall only the power semiconductors are arranged and no other electronic components are provided.
  • the entire control electronics for driving the power semiconductors can, for example, be arranged on the distal side of the circuit board, for example, the side averted from the partition wall.
  • Corresponding through-holes are provided to make an electric connection between the proximal and the distal side, which through-holes, however, exclusively establish the electric contact and are not suited for heat transport.
  • the electromotor can, for example, comprise a separating can separating the wet section from a dry section in which, among others, the stator-side motor coils are arranged.
  • the dry section in which the motor coils are situated, may be separated from the dry section, in which the circuit board is located.
  • the partition wall lying in a transverse plane, is part of the separating can so that the partition wall is flown to and cooled directly by the coolant.
  • the surface area of the conductor strip can, for example, be at least twice, for example, at least three times, for example, at least five times, the size of the surface area of the respective cooling lug by which the same is fixed or soldered to the conductor strip.
  • FIG. 1 is a schematic longitudinal section of an electrical motor vehicle coolant pump 10 that pumps a liquid coolant in a coolant circuit serving to cool an internal combustion engine (not illustrated).
  • the coolant pump 10 comprises an electric brushless drive motor 15 which is commutated electronically.
  • the coolant pump 10 has a multi-part housing 11 divided internally by a separating can 17 into a wet section 60 and a dry section 62 .
  • the separating can 17 is formed by a non-magnetic plastic sleeve jacket 19 of L-shaped cross section and an electrically conductive metal partition wall 24 which lies in a transverse plane.
  • the rotor located in the wet section 60 comprises a dual bearing shaft 12 , a magnetically permanently excited motor rotor 16 and a pump rotor 14 pumping coolant from an axial coolant inlet 18 to a radial coolant outlet 20 .
  • a plurality of stator coils 22 are arranged radially outside the motor rotor 16 and the cylindrical part of the sleeve jacket 19 and on the same axial position, the stator coils 22 being situated on the proximal side of the partition wall 24 .
  • an electric circuit board 28 including all the electronics for driving the stator coils 22 , is provided in a circuit board chamber 51 .
  • the circuit board 28 lies in a transverse plane and is mounted on both sides, wherein, on the distal side of the circuit board plate 40 , a plurality of control electronics elements 36 forming the control electronics 36 is soldered onto conductor strips, and wherein, on the proximal side of the circuit board 28 , only a plurality of identical power semiconductors 30 , 30 ′ are arranged which are driven by the control electronics 36 through corresponding through-holes 64 .
  • the power semiconductors 30 , 30 ′ may be MOSFET transistors.
  • each power semiconductor 30 , 30 ′ are mounted horizontally on the circuit board 28 , with each power semiconductor 30 , 30 ′ having a cooling lug 34 whose surface area is larger than the corresponding surface area of the semiconductor body 32 .
  • Each cooling lug 34 , 34 ′ is an electric terminal of the power semiconductor and is respectively soldered with its entire surface onto a large-surface conductor strip 42 , 42 ′ by means of solder 35 .
  • the proximal side 41 of the circuit board 28 is covered with an electrically non-conductive heat conducting means 44 in the form of a heat conducting film which has corresponding openings 45 , 45 ′ only in the regions of the power semiconductors 30 , 30 ′.
  • the heat conducting means 44 rests on the distal side 80 of the partition wall 24 in a heat conductive manner, which partition wall 24 has corresponding recesses 50 , 50 ′ in the region of the power semiconductors 30 , 30 ′ and of the corresponding openings 45 , 45 ′ in the heat conducting means 44 , respectively, into which recesses 50 , 50 ′ the respective semiconductor bodies 32 , 32 ′ extend.
  • the recesses 50 , 50 ′ are not continuous in the axial direction so that the partition wall 24 is completely liquid-tight.
  • the surface area of the conductor strips 42 , 42 ′ respectively is at least 4 to 5 times the surface area of the cooling lug 34 , 34 ′ of the respective power semiconductor 30 , 30 ′.
  • the other terminals of the power semiconductor are soldered to corresponding conductor strips 43 1 and 43 2 .
  • the circuit board chamber 51 is closed with a cover 26 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Motor Or Generator Cooling System (AREA)
US13/979,377 2011-01-13 2011-07-27 Electrical motor vehicle coolant pump Abandoned US20140010684A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11150865.1 2011-01-13
EP11150865.1A EP2476914B1 (de) 2011-01-13 2011-01-13 Elektrische Kfz-Kühlmittelpumpe
PCT/EP2011/062864 WO2012095192A1 (de) 2011-01-13 2011-07-27 Elektrische kfz-kühlmittelpumpe

Publications (1)

Publication Number Publication Date
US20140010684A1 true US20140010684A1 (en) 2014-01-09

Family

ID=44140682

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/979,377 Abandoned US20140010684A1 (en) 2011-01-13 2011-07-27 Electrical motor vehicle coolant pump

Country Status (4)

Country Link
US (1) US20140010684A1 (de)
EP (1) EP2476914B1 (de)
CN (1) CN103443474B (de)
WO (1) WO2012095192A1 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150176551A1 (en) * 2013-12-20 2015-06-25 Michael R. Teets Integrated pwm fuel pump driver module
US20160065037A1 (en) * 2013-03-25 2016-03-03 Pierburg Pump Technology Gmbh Electronic fluid pump for a motor vehicle
US20170037872A1 (en) * 2015-08-03 2017-02-09 Magna powertrain gmbh & co kg Electric compressor
US20170058915A1 (en) * 2015-08-26 2017-03-02 Johnson Electric S.A. Electric Coolant Pump
US20190225076A1 (en) * 2018-01-25 2019-07-25 Toyota Jidosha Kabushiki Kaisha Electric vehicle
KR20200041952A (ko) * 2017-08-23 2020-04-22 항저우 산후아 리서치 인스티튜트 컴퍼니 리미티드 전기 펌프
US20210083558A1 (en) * 2019-09-16 2021-03-18 Coavis Motor integrated with control unit and water pump having the same
US11658551B2 (en) 2018-02-28 2023-05-23 Pierburg Pump Technology Gmbh Electric motor vehicle auxiliary unit
EP3879105B1 (de) 2020-03-12 2024-10-23 Schwäbische Hüttenwerke Automotive GmbH Pumpeneinsatz und pumpenanordnung mit einem solchen pumpeneinsatz

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2725691B1 (de) * 2012-10-29 2017-09-20 Pierburg Pump Technology GmbH Elektrisches Kfz-Nebenaggregat
DE102012222359A1 (de) 2012-12-05 2014-06-05 Mahle International Gmbh Elektrische Flüssigkeitspumpe
DE102012222358A1 (de) 2012-12-05 2014-06-05 Mahle International Gmbh Elektrische Flüssigkeitspumpe
DE102013202335A1 (de) 2013-02-13 2014-08-14 Mahle International Gmbh Elektrische Fluidpumpe
EP2947324B1 (de) 2014-05-22 2019-07-24 Pierburg Pump Technology GmbH Elektrisches Kfz-Nebenaggregat
DE102014016481A1 (de) * 2014-11-07 2016-05-12 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Elektromotorische Wasserpumpe
CN109958660A (zh) * 2017-12-22 2019-07-02 盾安环境技术有限公司 一种散热结构及电子水泵
AT521284B1 (de) * 2018-05-22 2022-08-15 Tcg Unitech Systemtechnik Gmbh Kühlmittelpumpe
CN110541819B (zh) 2018-05-28 2020-11-20 杭州三花研究院有限公司 电子油泵

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6377462B1 (en) * 2001-01-09 2002-04-23 Deere & Company Circuit board assembly with heat sinking
US6445098B1 (en) * 1999-01-27 2002-09-03 Wilo Gmbh Can for a synthetic pump motor
US20080118380A1 (en) * 2006-11-20 2008-05-22 Aisan Kogyo Kabushiki Kaisha Fluid pump
US20090289344A1 (en) * 2008-05-23 2009-11-26 Fuji Electric Device Technology Co., Ltd. Semiconductor device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070022979A1 (en) * 2005-08-01 2007-02-01 The Timken Company Coolant pump for internal combustion engine
US7296543B2 (en) * 2006-04-06 2007-11-20 Gm Global Technology Operations, Inc. Engine coolant pump drive system and apparatus for a vehicle
AT503705B1 (de) * 2006-05-16 2008-05-15 Siemens Ag Oesterreich Anordnung zur kühlung von smd-leistungsbauelementen auf einer leiterplatte
EP2253847B1 (de) * 2009-05-18 2019-07-03 Pierburg Pump Technology GmbH Schmiermittel-schaufelpumpe mit verstellbarer kapazität

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6445098B1 (en) * 1999-01-27 2002-09-03 Wilo Gmbh Can for a synthetic pump motor
US6377462B1 (en) * 2001-01-09 2002-04-23 Deere & Company Circuit board assembly with heat sinking
US20080118380A1 (en) * 2006-11-20 2008-05-22 Aisan Kogyo Kabushiki Kaisha Fluid pump
US20090289344A1 (en) * 2008-05-23 2009-11-26 Fuji Electric Device Technology Co., Ltd. Semiconductor device

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160065037A1 (en) * 2013-03-25 2016-03-03 Pierburg Pump Technology Gmbh Electronic fluid pump for a motor vehicle
US20150176551A1 (en) * 2013-12-20 2015-06-25 Michael R. Teets Integrated pwm fuel pump driver module
US10378555B2 (en) * 2015-08-03 2019-08-13 Magna Powertrain Bad Homburg GmbH Electric compressor for use in a motor vehicle having a housing with an inner circumferential recess closed by a control unit to form a cooling duct
US20170037872A1 (en) * 2015-08-03 2017-02-09 Magna powertrain gmbh & co kg Electric compressor
US10415590B2 (en) * 2015-08-26 2019-09-17 Johnson Electric International AG Electric coolant pump
US20170058915A1 (en) * 2015-08-26 2017-03-02 Johnson Electric S.A. Electric Coolant Pump
KR20200041952A (ko) * 2017-08-23 2020-04-22 항저우 산후아 리서치 인스티튜트 컴퍼니 리미티드 전기 펌프
KR102322609B1 (ko) * 2017-08-23 2021-11-05 제지앙 산후아 인텔리전트 컨트롤즈 컴퍼니 리미티드 전기 펌프
US11384776B2 (en) 2017-08-23 2022-07-12 Zhejiang Sanhua Intelligent Controls Co., Ltd. Electric pump
US20190225076A1 (en) * 2018-01-25 2019-07-25 Toyota Jidosha Kabushiki Kaisha Electric vehicle
US10960752B2 (en) * 2018-01-25 2021-03-30 Toyota Jidosha Kabushiki Kaisha Electric vehicle
US11658551B2 (en) 2018-02-28 2023-05-23 Pierburg Pump Technology Gmbh Electric motor vehicle auxiliary unit
US20210083558A1 (en) * 2019-09-16 2021-03-18 Coavis Motor integrated with control unit and water pump having the same
US11848588B2 (en) * 2019-09-16 2023-12-19 Coavis Motor integrated with control unit and water pump having the same
EP3879105B1 (de) 2020-03-12 2024-10-23 Schwäbische Hüttenwerke Automotive GmbH Pumpeneinsatz und pumpenanordnung mit einem solchen pumpeneinsatz

Also Published As

Publication number Publication date
EP2476914A1 (de) 2012-07-18
CN103443474A (zh) 2013-12-11
CN103443474B (zh) 2016-06-29
WO2012095192A1 (de) 2012-07-19
EP2476914B1 (de) 2017-08-02

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Owner name: PIERBURG PUMP TECHNOLOGY GMBH, GERMANY

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Effective date: 20130816

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STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE