EP3794915A1 - Dispositif convertisseur pour un véhicule et véhicule - Google Patents

Dispositif convertisseur pour un véhicule et véhicule

Info

Publication number
EP3794915A1
EP3794915A1 EP19725048.3A EP19725048A EP3794915A1 EP 3794915 A1 EP3794915 A1 EP 3794915A1 EP 19725048 A EP19725048 A EP 19725048A EP 3794915 A1 EP3794915 A1 EP 3794915A1
Authority
EP
European Patent Office
Prior art keywords
busbar
converter device
heat
cooling structure
housing
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
EP19725048.3A
Other languages
German (de)
English (en)
Inventor
Christoph Hoyler
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.)
Valeo eAutomotive Germany GmbH
Original Assignee
Valeo Siemens eAutomotive Germany 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 Valeo Siemens eAutomotive Germany GmbH filed Critical Valeo Siemens eAutomotive Germany GmbH
Publication of EP3794915A1 publication Critical patent/EP3794915A1/fr
Pending 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
    • 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
    • H05K7/20927—Liquid coolant without phase change
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
    • 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
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
    • H05K7/1427—Housings
    • H05K7/1432—Housings specially adapted for power drive units or power converters

Definitions

  • the present invention relates to a power converter device for a vehicle, comprising a cooling structure through which a cooling medium can flow and an intermediate circuit capacitor having a busbar arrangement.
  • the invention relates to a vehicle.
  • Such a power converter device for a vehicle is known from US 2012/0250384 A1, which discloses an inverter device having a plurality of switching devices, a capacitor that smoothes DC power, and a base plate. On a component placing surface of the base plate, the plurality of switching components are placed, with heat dissipating fins provided on the side of the base plate opposite to the component placing surface.
  • the capacitor has a capacitor component and capacitor busbars that are cast in a housing region of the capacitor.
  • the condenser is cooled by wind.
  • Cooling of a DC link capacitor by airstream is not possible, however, if the converter device is encapsulated by environmental influences in the vehicle.
  • the heat dissipation behavior of such a capacitor is in need of improvement, since poor heat removal at high power requirements can lead to overheating and thus thermal failure of the DC link capacitor.
  • the invention is therefore based on the object, an improved cooling an intermediate circuit capacitor in a power converter device for a vehicle to indicate.
  • a power converter device of the type mentioned wherein the busbar assembly at least is partially connected via a heat conduction thermally conductive to the cooling structure for heat dissipation from the DC link capacitor.
  • the invention is based on the finding that conventional DC link capacitors have only a poor thermal connection to the cooling medium, with added additional thermal insulation by the potting compound, in particular in potted DC link capacitors.
  • the invention proposes to thermally connect the busbar arrangement of the intermediate circuit capacitor to the cooling structure via the heat conduction means in order to ensure the typically good thermal conductivity of the busbar arrangement for dissipating heat which arises due to the flow of current through the busbar arrangement and Heat from the interior of the DC link capacitor to use.
  • the heat is therefore guided from the point at which it arises via the heat conducting means to the cooling structure, instead of cooling the intermediate circuit capacitor only from the outside, as in conventional converter devices.
  • the heat conducting means is a thermal paste, by means of which the busbar arrangement is connected directly to the cooling structure.
  • the busbar arrangement is connected directly to the cooling structure.
  • the heat-conducting means comprises a heat-conducting plate, via which the busbar arrangement can be connected to the cooling structure.
  • the heat conducting plate is preferably formed of metal.
  • the heat-conducting medium can comprise a heat-conducting paste, which is arranged between the busbar arrangement and the heat-conducting plate and / or between the heat-conducting plate and the cooling structure.
  • the busbar assembly comprises an insulating means, via which the busbar assembly is electrically isolated from the heat conducting.
  • the insulating means is preferably formed from an insulating film.
  • the busbar arrangement may have at least one busbar element with a first busbar section extending in a spatial direction, on which the heat conducting means is arranged, and a second busbar section extending in another spatial direction.
  • the first busbar section can thus run parallel to a cooling structure-side surface to which the busbar arrangement is thermally connected.
  • the second busbar section preferably extends perpendicularly to the first busbar section and in particular is contacted with other components of the electrical power converter device.
  • a, in particular curved, connecting section can be provided between the first busbar section and the second busbar section.
  • the second busbar section and / or the connecting section do not touch the cooling structure and / or the heat conduction structure.
  • the cooling structure may have a through opening into or through which the second busbar section extends.
  • the DC link capacitor can be a housing and a capacitor structure that at least partially accommodated in the housing and electrically contacted with the busbar arrangement.
  • the capacitor structure is formed, for example, from one or more windings, in particular film windings.
  • the heat-conducting means and a portion of the busbar arrangement connected to the heat-conducting means can be arranged outside the housing.
  • the capacitor structure can protrude out of the opening.
  • the cooling structure then expediently has a recess into which the busbar arrangement and the capacitor structure protrude.
  • the capacitor structure may be potted.
  • the busbar assembly and the capacitor structure and a not directly connected to the busbar assembly portion of the heat conduction in the housing may be potted.
  • the first busbar section is completely potted.
  • the heat conduction can be substantially flush with an edge surface of the housing.
  • the housing is attached to the cooling structure. This is done, for example, by means of a flange connection.
  • the power converter device according to the invention can have a power unit which is arranged on a side of the cooling structure opposite the housing.
  • the cooling structure forms a converter housing which houses the power unit.
  • at least one cooling channel for a cooling fluid is formed as a cooling medium in the cooling structure.
  • the cooling fluid in particular a cooling fluid, thus advantageously allows a particularly high heat dissipation.
  • the at least one cooling channel may be part of a closed cooling circuit.
  • the invention relates to a vehicle, in particular electric vehicle or hybrid vehicle, comprising an electric machine for driving the vehicle and a power converter device according to the invention for supplying the electric machine.
  • FIG. 1 is a sectional view of a first embodiment of the inventive converter device
  • FIG. 2 is a sectional view of a second embodiment of the power converter device according to the invention.
  • Fig. 3 is a schematic diagram of an embodiment of the vehicle according to the invention.
  • FIG. 1 is a sectional view of a first embodiment of a power converter device 1, comprising a cooling structure 2 through which a cooling medium flows, and an intermediate circuit capacitor 3 with a busbar arrangement 4, which conducts thermal conduction in sections via a heat conducting means 5 the cooling structure 2 for heat dissipation from the DC link capacitor 3 is connected.
  • the heat-conducting means 5 is a heat-conducting paste 6, by means of which the busbar arrangement 4 is bonded directly to the cooling structure.
  • the busbar arrangement 4 has an insulation means 7 in the form of an insulating film, via which the busbar arrangement 4 is electrically insulated from heat conducting means 5.
  • the busbar arrangement 4 has two busbar elements 8, 9 which each have a first busbar section 10 extending in a spatial direction x, a second busbar section 11 extending in a spatial direction z and a connecting section 12 connecting the busbar sections 10, 11 having a rounded shape.
  • the heat conducting means 5 and is arranged flat on the first busbar section 10. Both extend in an xy plane.
  • the heat conducting medium rests directly on the insulating means 7. In this case, the second busbar section 11 neither touches the cooling structure 2 nor the heat-conducting means 5 and is guided through a passage opening 13 of the cooling structure 2.
  • the intermediate circuit capacitor 3 has a housing 14 and two capacitor structures 15, 16 in the form of foil windings.
  • the busbar elements 8, 9 contact the same pole of a respective capacitor structure 15,
  • busbar elements 8, 17 on the one hand and the busbar elements 9, 18 on the other hand are insulated from each other and fastened to each other by means of a screw 19.
  • the capacitor structures 15, 16 protrude out of the housing 14 or its opening, so that the busbar arrangement 4, the Heat conducting 6 and the insulating means 7 are arranged outside the housing 14 are net.
  • a frame 20 is further arranged, which also protrudes from the opening.
  • a recess 21 is provided in the cooling structure 2, into which the capacitor structures 15, 16 and the frame 20 extend.
  • the volume delimited by the housing 14 and the frame 20 is potted with a potting compound 22, which is also perpendicular to the planar surface Connection to the heat conducting 6 (here in an xz plane) lying sections in the first busbar section 10 engages.
  • the power converter device 1 further has a power switching element arrangements 23, 24 comprising a power unit 25, which is arranged on a side of the cooling structure 2 opposite the housing 14.
  • the cooling structure 2 also forms part of a converter housing and is penetrated by a plurality of cooling channels, not shown, through which a cooling fluid flows as cooling medium.
  • the cooling channels are part of a closed cooling circuit for cooling both the power unit 25 and the intermediate circuit capacitor.
  • Fig. 2 is a sectional view of a second embodiment of a power conversion device 1, wherein only an area around the intermediate circuit capacitor 3 is shown and further parts of the power conversion device 1 are formed as in the first embodiment.
  • the second embodiment differs from the first exemplary embodiment initially in that the heat conducting means 5 additionally comprises a heat conducting plate 26 made of metal, wherein a layer of the thermal paste 6 between the busbar assembly 4 and the heat conducting plate 26 and a layer of thermal paste 6 between the heat conducting 26 and the cooling structure 2 are arranged. Furthermore, the first busbar section 10, the connecting section 12, the insulating means 7 and the heat-conducting plate 26 are located within the housing 14. An edge surface 27 of the opening of the housing 14 terminates flush with the heat-conducting plate 26. On the frame 22 and the Recess 21 is omitted. The volume bounded by the housing 14 is potted with the potting compound 22, which also encloses sections in the heat-conducting plate 26 lying perpendicular to the planar connection to the first busbar section 10 (here in the xz-plane).
  • FIG. 3 is a schematic diagram of an embodiment of a vehicle 28, including an electric machine 29 configured to drive the vehicle 28, and a power conversion device 1 according to any of the previously described embodiments.
  • the power converter device 1 is configured to supply the electric machine 29 electrically, wherein by means of the power converter device 1, a DC voltage provided by a floconvoltage battery 30 can be converted into a multi-phase AC voltage.
  • the vehicle 28 is accordingly an electric vehicle or a flybridge vehicle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Inverter Devices (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Dc-Dc Converters (AREA)

Abstract

L'invention concerne un dispositif convertisseur (1) pour un véhicule (28), comprenant une structure de refroidissement (2) pouvant être traversée par un agent de refroidissement et un condensateur de circuit intermédiaire (3) pourvu d'une disposition de barre conductrice (4), la disposition de barre conductrice (4) étant reliée au moins par sections via un moyen thermoconducteur (5), de manière thermiquement conductrice, à la structure de refroidissement (2) pour l'évacuation de chaleur du condensateur de circuit intermédiaire (3).
EP19725048.3A 2018-05-15 2019-05-09 Dispositif convertisseur pour un véhicule et véhicule Pending EP3794915A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018111630.6A DE102018111630A1 (de) 2018-05-15 2018-05-15 Stromrichtereinrichtung für ein Fahrzeug und Fahrzeug
PCT/EP2019/061928 WO2019219500A1 (fr) 2018-05-15 2019-05-09 Dispositif convertisseur pour un véhicule et véhicule

Publications (1)

Publication Number Publication Date
EP3794915A1 true EP3794915A1 (fr) 2021-03-24

Family

ID=66597533

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19725048.3A Pending EP3794915A1 (fr) 2018-05-15 2019-05-09 Dispositif convertisseur pour un véhicule et véhicule

Country Status (7)

Country Link
US (1) US11464141B2 (fr)
EP (1) EP3794915A1 (fr)
JP (1) JP2021523669A (fr)
KR (1) KR20210008366A (fr)
CN (1) CN112106455B (fr)
DE (1) DE102018111630A1 (fr)
WO (1) WO2019219500A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11527357B2 (en) 2020-04-10 2022-12-13 Hamilton Sundstrand Corporation Busbar with tailored perforation sizes to provide thermal path
JP2023115780A (ja) * 2022-02-08 2023-08-21 住友電装株式会社 電気接続箱
DE102022208100A1 (de) 2022-08-04 2024-02-15 Zf Friedrichshafen Ag Inverteraufbau eines Inverters eines Leistungselektronikmoduls zum Betreiben eines Elektroantriebs eines Kraftfahrzeugs

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3447543B2 (ja) * 1998-02-02 2003-09-16 東芝トランスポートエンジニアリング株式会社 電力変換装置
JP4751810B2 (ja) * 2006-11-02 2011-08-17 日立オートモティブシステムズ株式会社 電力変換装置
DE102008061488A1 (de) * 2008-12-10 2010-06-17 Siemens Aktiengesellschaft Stromrichtermodul mit gekühlter Verschienung
JP4775475B2 (ja) * 2009-04-14 2011-09-21 株式会社デンソー 電力変換装置
JP5534352B2 (ja) 2011-03-31 2014-06-25 アイシン・エィ・ダブリュ株式会社 インバータ装置
EP2637489B1 (fr) * 2012-03-06 2018-01-24 ABB Schweiz AG Ensemble de circuits d'alimentation électrique
JP6467640B2 (ja) 2014-01-16 2019-02-13 パナソニックＩｐマネジメント株式会社 半導体装置
JP6200871B2 (ja) * 2014-09-09 2017-09-20 日立オートモティブシステムズ株式会社 パワーモジュール及び電力変換装置
JP6180489B2 (ja) * 2015-11-02 2017-08-16 三菱電機株式会社 電力変換装置
FR3046904B1 (fr) * 2016-01-20 2018-03-02 Valeo Systemes De Controle Moteur Equipement electrique, notamment pour vehicule automobile
DE102016204460A1 (de) * 2016-03-17 2017-09-21 Zf Friedrichshafen Ag Leistungselektronikmodul und Fahrzeugantriebsystem
JP6674867B2 (ja) * 2016-08-26 2020-04-01 株式会社日立産機システム 電力変換装置
CN110120736B (zh) * 2018-02-05 2021-04-23 台达电子企业管理（上海）有限公司 水冷电源模块

Also Published As

Publication number Publication date
KR20210008366A (ko) 2021-01-21
WO2019219500A1 (fr) 2019-11-21
JP2021523669A (ja) 2021-09-02
CN112106455B (zh) 2023-10-31
US11464141B2 (en) 2022-10-04
CN112106455A (zh) 2020-12-18
DE102018111630A1 (de) 2019-11-21
US20210144887A1 (en) 2021-05-13

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