EP2905471B1 - Pompe de liquide de refroidissement électrique de véhicule automobile - Google Patents

Pompe de liquide de refroidissement électrique de véhicule automobile Download PDF

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Publication number
EP2905471B1
EP2905471B1 EP14154591.3A EP14154591A EP2905471B1 EP 2905471 B1 EP2905471 B1 EP 2905471B1 EP 14154591 A EP14154591 A EP 14154591A EP 2905471 B1 EP2905471 B1 EP 2905471B1
Authority
EP
European Patent Office
Prior art keywords
motor
coolant pump
electrically operated
heat
motor vehicle
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.)
Active
Application number
EP14154591.3A
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German (de)
English (en)
Other versions
EP2905471A1 (fr
Inventor
Toni Henke
Kathrin Holzbauer
Alexander Findeisen
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
Priority to EP14154591.3A priority Critical patent/EP2905471B1/fr
Priority to PCT/EP2015/051395 priority patent/WO2015121051A1/fr
Publication of EP2905471A1 publication Critical patent/EP2905471A1/fr
Application granted granted Critical
Publication of EP2905471B1 publication Critical patent/EP2905471B1/fr
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Classifications

    • 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
    • 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
    • F04D13/0606—Canned motor pumps

Definitions

  • the invention relates to an electric motor vehicle coolant pump, which is driven by an electric drive motor, which is designed as a so-called canned motor.
  • a motor vehicle coolant pump serves to pump a liquid heat carrier, hereinafter referred to as coolant, in a heating or cooling circuit.
  • the coolant circuit does not necessarily have to be a main flow of the circuit, but may also form a side stream.
  • canned motors are used as drive motors, which are commutated electronically.
  • the motor rotor is arranged in the wet area, whereas the motor stator forming the motor coils are arranged in the dry area.
  • the motor rotor space and the motor stator space are separated from each other in a liquid-tight manner by a generally cylindrical can.
  • the problem with an electronically commutated drive motor is basically the cooling of the motor control, which has a plurality of power semiconductors for controlling the motor coils, which must heat up considerably during operation and must be cooled accordingly in order to prevent their destruction.
  • the motor coils are another heat source that should be thermally shielded as well as possible with respect to the motor control. To cool the power semiconductors, it makes sense to use this for the coolant flowing through the coolant pump.
  • EP 2 651 015 A1 discloses an electric fluid pump in which the control room with the engine control immediately adjacent to the containment shell.
  • Out EP 2 469 102 A1 is an electric motor vehicle coolant pump known, the canned drive motor is electronically commutated.
  • the dividing wall often consists of a material with good heat conduction, in order to ensure a good heat flow from the engine control through the dividing wall to the coolant.
  • the partition also separates the motor coils from the control room, heat from the motor coils into the control room can also be entered via this path.
  • Object of the invention against this background is to provide an electric motor vehicle coolant pump with improved cooling of the engine control.
  • the electric motor vehicle coolant pump has a pump unit, which is driven by the electric drive motor.
  • the pump unit may for example be designed as a so-called impeller having a central axial inlet and the liquid coolant pumped radially outward.
  • In the motor section is a permanent magnetically excited motor rotor, a plurality of motor coils provided motor stator and a split pot, which separates the motor stator liquid-tight from the motor rotor.
  • the fixed motor coils are preferably annular around the rotating motor rotor arranged around.
  • the coolant pump has a control section with a control room in which the engine control is arranged.
  • the control room is hermetically separated from the motor section by a plastic partition wall lying essentially in a transverse plane, so that the partition wall shields the control room from the containment shell insulating the wet space with the motor stator.
  • the partition wall has a heat transfer opening in which a heat conductor is arranged which is in heat-conducting contact with the split pot with its one axial longitudinal end and in heat-conducting contact with the motor control at its other axial longitudinal end.
  • the specific thermal conductivity of the heat conductor is higher than the specific thermal conductivity of the partition wall plastic. Particularly preferably, the specific thermal conductivity of the heat conductor is at least twice as high as the specific thermal conductivity of the partition wall plastic.
  • the control room with the motor control is thermally well insulated and shielded from the motor section, in which inter alia, the heat generating motor coils are arranged.
  • the heat input of the motor coils in the control room is reduced in this way to a minimum.
  • the heat conductor in the heat transfer opening of the partition wall produces "pointwise" a thermal bridge between the motor control and the containment shell, which preferably consists of a material with a relatively high specific heat conductivity.
  • the heat conductor is spatially preferably arranged where the motor control generates the most heat, ie in the vicinity of the power semiconductors.
  • the plastic partition wall including the partition axially penetrating heat conductor on the one hand, a good thermal insulation of the control room with respect to the motor coils and on the other hand, a targeted heat dissipation from the engine control to the containment shell realized.
  • the heat conductor is preferably formed by a thermal adhesive or a non-adhesive thermal compound that completely fills and closes the heat transfer opening so that the motor section is fluidically completely isolated from the control section.
  • thermal adhesive is permanently a gap-free connection of the heat conductor to the containment shell on the one hand and the engine control on the other hand ensured.
  • the heat conductor can also be designed to be elastic and clamped axially between the motor control and the containment shell, so that a gap-free thermal connection of the heat conductor to the containment shell and the motor control is permanently ensured in this way.
  • the heat conductor can also be formed by a rigid and prefabricated solid, for example, a metal body or a ceramic body, which is particularly preferably thermally coupled by a thermal adhesive or a thermal mass gap-free to the engine control and the containment shell, but (electrically insulating) formed is.
  • the heat conductor is designed as an electrical insulator.
  • the heat conductor can be thermally coupled directly to a conductor track or to a power semiconductor without thereby producing an electrical connection from the conductor track or the power semiconductor to the containment shell.
  • the heat transfer opening is formed by a sleeve body whose axial length substantially corresponds to the axial distance between the containment shell and the engine control.
  • the axial length of the sleeve body is greater than the axial wall thickness of the partition wall, so that the sleeve body axially projects beyond the partition wall on one or both axial sides.
  • the plastic partition forms the only spatial separation between the motor coils and the control room. Since the plastic baffle forms good thermal insulation, another baffle is not required to ensure good thermal isolation of the motor bobbins from the control room.
  • the plastic partition wall is an integral part of a plastic housing body which radially surrounds the motor stator and / or the control room. As a result, the additional production cost for the partition is kept relatively low.
  • the containment shell is made of metal, which has a good thermal conductivity.
  • a metal containment shell has the advantage of being absolutely leakproof with respect to liquids such as water or water vapor, so that a transfer of moisture into the control room is excluded.
  • the containment shell has a substantially lying in a transverse plane pot bottom, which is in heat-conducting contact with the heat conductor directly.
  • the Heat conductor or the heat transfer opening is within the axial projection of the pot bottom.
  • the motor control is arranged on a standing in a transverse plane board and has the motor control power semiconductors, which are directly or indirectly connected via separate guide elements thermally conductive to the heat conductor.
  • the power semiconductors When the power semiconductors are located on the distal side of the board, the heat is conducted through the routing elements to the proximal side of the board.
  • the power semiconductors may be arranged on the proximal side of the board facing the plastic partition wall so that the cooling vanes of the power semiconductors are connected directly to the heat conductor with the heat conductor.
  • the heat-conducting elements of the motor control board are particularly preferably formed by metal sleeves, metal sleeves filled with a heat conductor and / or metal pins which are inserted in the board.
  • the power semiconductors may in this case be arranged on the distal side of the circuit board, wherein the heat conduction elements establish the thermal connection through the circuit board to the proximal side of the circuit board.
  • the power semiconductors are arranged in close proximity to the heat conductor, so that the heat path is short and the absolute thermal resistance between the power semiconductors and the heat conductor is low.
  • the FIG. 1 shows an electric motor vehicle coolant pump 10, which is used in a cooling circuit of a motor vehicle, for example, the pumping of a liquid coolant, such as water, for cooling an internal combustion engine or other aggregate.
  • a liquid coolant such as water
  • the coolant pump 10 has three sections in the axial direction, namely a pump section 12, a motor section 14 adjoining thereto and a control section 16 adjoining the motor section 14.
  • a pump rotor 20 is arranged, which in the present case is a so-called impeller axial central inlet and the coolant pumps radially outward.
  • the pump rotor 20 is driven by an electronically commutated drive motor, which is essentially formed by a permanent magnetically excited motor rotor 30 and these coaxial and annular motor coils 33 surrounding the motor rotor 30, which constitute the motor stator 32.
  • the motor rotor 30 is hermetically and liquid-tight isolated from the motor stator 32 by a metal can 40. Radially between the motor rotor 30 and the motor stator 32, a cylinder body 44 of the split pot 40 is arranged in the cylindrical magnetic gap between the motor stator 32 and the motor rotor 30th lies.
  • the containment shell 40 has adjacent to the pump facing away from the longitudinal end of the motor rotor 30 adjacent to an annular pot bottom 42.
  • a plastic partition wall 50 arranged in a transverse plane, which forms a fluid-tight separation of the motor section 14 from the control section 16 defined by an electronic motor control 71 in a control room 70.
  • the plastic partition wall 50 is an integral part of a plastic housing body 18 which is substantially cylindrical and radially surrounds the motor stator 32 and the control room 70.
  • the plastic partition wall 50 has a heat transfer opening 64, which is extended by a sleeve body 60 axially beyond the axial thickness of the partition 50 on both sides, so that on the proximal side a proximal collar 63 and on the distal side a distal collar 62nd is realized.
  • the elongate heat transfer opening 64 formed in this way is completely filled with a heat conductor 66, which consists of a cured bathleitkleber.
  • the thermal adhesive has a good specific thermal conductivity and forms an electrical insulator.
  • the motor controller 71 in the control room 70 has a board 73 lying in a transverse plane, which carries the electronic components, which also include a plurality of power semiconductors 72.
  • the power semiconductors 72 are arranged on the distal side of the circuit board 73, ie on the side of the circuit board 73 facing away from the dividing wall 50.
  • the power semiconductors 72 are heaped and concentrated in a small area, in axial alignment with the heat conductor 66.
  • the circuit board 73 is repeatedly through-plated with guide elements 74 in the form of metal sleeves or metal pins filled with a heat-conducting compound, so that the heat generated by the power semiconductors 72 via their cooling surfaces and the guide elements 74 to the proximal side of the board 73 is headed.
  • a metallic collecting surface 76 is applied, which establishes the thermal connection between the guide elements 74 on the proximal side of the printed circuit board.
  • the heat conductor 66 is thermally connected directly to the collecting surface 76 such that overall a low thermal resistance is realized.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (11)

  1. Pompe de liquide de refroidissement électrique pour véhicule automobile (10) avec
    un rotor de pompe (20),
    une partie de moteur (14) comprenant un rotor de moteur à aimant permanent (30), un stator de moteur (32) comprenant des bobines de moteur (33) et un pot d'entrefer (40) séparant de manière étanche au liquide le stator de moteur (32) du rotor du moteur (30), et
    une partie de commande (16) avec une chambre de commande (70) dans laquelle la commande de moteur (71) est agencée,
    caractérisée en ce que
    la chambre de commande (70) est séparée de la partie de moteur (14) par une cloison en matière plastique (50) située sensiblement dans un plan transversal,
    la cloison (50) a une ouverture de transfert de chaleur (64) dans laquelle est disposé un conducteur de chaleur (66), dont l'une extrémité longitudinale est en contact thermoconducteur avec le pot entrefer (40) et l'autre extrémité longitudinale est en contact thermoconducteur avec la commande de moteur (71), et
    la conductivité thermique spécifique du conducteur thermique (66) est supérieure à la conductivité thermique spécifique de la matière plastique de la cloison.
  2. Pompe de liquide de refroidissement électrique pour véhicule automobile (10) selon la revendication 1, dans laquelle l'orifice de transfert de chaleur (64) est formé par un corps de douille (60) dont la longueur axiale correspond sensiblement à la distance axiale entre le pot d'entrefer (40) et la commande de moteur (71).
  3. Pompe de liquide de refroidissement électrique pour véhicule automobile (10) selon l'une quelconque des revendications précédentes, dans laquelle le conducteur de chaleur (66) est formé par un adhésif thermoconducteur qui ferme complètement l'orifice de transfert de chaleur (64).
  4. Pompe de liquide de refroidissement électrique pour véhicule automobile (10) selon l'une des revendications précédentes, dans laquelle le conducteur
  5. Pompe de liquide de refroidissement électrique pour véhicule automobile (10) selon l'une des revendications précédentes, dans laquelle le conducteur de chaleur (66) est un isolant électrique.
  6. Pompe de liquide de refroidissement électrique pour véhicule automobile (10) selon l'une quelconque des revendications précédentes, dans laquelle la cloison en matière plastique (50) forme la seule séparation entre les bobines du moteur (33) et la chambre de commande (70).
  7. Pompe de liquide de refroidissement électrique pour véhicule automobile (10) selon l'une des revendications précédentes, dans laquelle la cloison en matière plastique (50) fait partie intégrante d'un corps de carter en matière plastique (18) qui entoure radialement le stator de moteur (32) et/ou la chambre de commande (70).
  8. Pompe de liquide de refroidissement électrique pour véhicule automobile (10) selon l'une des revendications précédentes, dans laquelle le pot d'entrefer (40) est en métal.
  9. Pompe de liquide de refroidissement électrique pour véhicule automobile (10) selon l'une quelconque des revendications précédentes, dans laquelle le pot d'entrefer (40) a un fond de pot (42) sensiblement dans un plan transversal, ledit fond étant en contact thermoconducteur direct avec le conducteur de chaleur (66)
  10. Pompe de liquide de refroidissement électrique pour véhicule automobile (10) selon l'une des revendications précédentes, dans laquelle la commande de moteur (71) est agencée sur un circuit imprimé (73) situé dans un plan transversal et comprend des semi-conducteurs de puissance (72) qui sont reliés de manière thermoconducteur avec le conducteur de chaleur (66) soit directement ou par l'intermédiaire d'éléments conducteurs (74).
  11. Pompe de liquide de refroidissement électrique pour véhicule automobile (10) selon l'une quelconque des revendications précédentes, dans laquelle les éléments conducteurs (74) sont formés par des douilles en métal et/ou des broches en métal insérées dans le circuit imprimé (73).
EP14154591.3A 2014-02-11 2014-02-11 Pompe de liquide de refroidissement électrique de véhicule automobile Active EP2905471B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14154591.3A EP2905471B1 (fr) 2014-02-11 2014-02-11 Pompe de liquide de refroidissement électrique de véhicule automobile
PCT/EP2015/051395 WO2015121051A1 (fr) 2014-02-11 2015-01-23 Pompe à liquide de refroidissement pour véhicule électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14154591.3A EP2905471B1 (fr) 2014-02-11 2014-02-11 Pompe de liquide de refroidissement électrique de véhicule automobile

Publications (2)

Publication Number Publication Date
EP2905471A1 EP2905471A1 (fr) 2015-08-12
EP2905471B1 true EP2905471B1 (fr) 2019-10-09

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ID=50072954

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Application Number Title Priority Date Filing Date
EP14154591.3A Active EP2905471B1 (fr) 2014-02-11 2014-02-11 Pompe de liquide de refroidissement électrique de véhicule automobile

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EP (1) EP2905471B1 (fr)
WO (1) WO2015121051A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016206406A1 (de) * 2016-04-15 2017-10-19 Bühler Motor GmbH Pumpenmotor mit einem Spalttopf
EP3339656B1 (fr) * 2016-12-22 2020-11-11 Grundfos Holding A/S Groupe pompage
CN109863669B (zh) * 2016-12-22 2022-03-22 皮尔伯格泵技术有限责任公司 汽车电动气泵
IT201700117896A1 (it) * 2017-10-18 2019-04-18 Taco Italia S R L Circolatore di fluido
DE102020201306A1 (de) * 2019-10-15 2021-04-15 Vitesco Technologies GmbH Fluidpumpe
CN111852888A (zh) * 2020-07-28 2020-10-30 安徽天富泵阀有限公司 一种屏蔽泵系统
CN116648559A (zh) 2020-12-14 2023-08-25 皮尔伯格泵技术有限责任公司 汽车电动液泵

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5949171A (en) * 1998-06-19 1999-09-07 Siemens Canada Limited Divisible lamination brushless pump-motor having fluid cooling system
JP4084351B2 (ja) * 2004-12-24 2008-04-30 株式会社日立製作所 モータ一体型内接歯車式ポンプ及び電子機器
WO2012077246A1 (fr) * 2010-12-07 2012-06-14 三菱電機株式会社 Moteur avec circuit incorporé de conversion de puissance, pompe à liquide dans laquelle est installé ledit moteur avec circuit incorporé de conversion de puissance, climatiseur dans lequel est installée ladite pompe à liquide, chauffe-eau dans lequel est installée ladite pompe à liquide, et équipement dans lequel est installé le moteur avec circuit incorporé de conversion de puissance
EP2469102B1 (fr) 2010-12-22 2017-08-02 Pierburg Pump Technology GmbH Pompe à moyen de refroidissement pour véhicule automobile
JP2013099021A (ja) * 2011-10-28 2013-05-20 Mitsubishi Electric Corp ポンプ及びヒートポンプ装置

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Publication number Publication date
WO2015121051A1 (fr) 2015-08-20
EP2905471A1 (fr) 2015-08-12

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